| 1. |
- Li Zweifel, Ulla, et al.
(författare)
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God havsmiljö 2020 : Marin strategi för Nordsjön och Östersjön Del 2: God miljöstatus och miljökvalitetsnormer
- 2012
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Havsmiljöförordningens övergripande mål är att upprätthålla eller uppnå en god miljöstatus i de svenska förvaltningsområdena Nordsjön och Östersjön till år 2020. En av uppgifterna i den första förvaltningsperioden är att bestämma vad som kännetecknar god miljöstatus i respektive förvaltningsområde samt att ta fram miljökvalitetsnormer. God miljöstatus baseras på ett ramverk av så kallade deskriptorer som anges i havsmiljödirektivet, det vill säga det EU-direktiv som i Sverige genomförs genom havsmiljöförordningen. Deskriptorerna beskriver god miljöstatus på en övergripande nivå för 11 temaområden. Till varje deskriptor hör en rad kriterier som anger vad som ska ingå i en bedömning av miljöstatus. I Sverige har god miljöstatus formulerats för samtliga 29 kriterier som ska beaktas enligt direktivet. Dessa kvalitativa beskrivningar anger vad som kännetecknar god miljöstatus i Nordsjön och Östersjön. För att praktiskt bedöma om god miljöstatus har uppnåtts föreslås 37 nationella indikatorer. En uppsättning av indikatorer omfattar miljöns tillstånd och avspeglar ekosystemets komponenter i form av nyckelarter, samhällen, och livsmiljöer. En utgångspunkt vid val av indikatorer för miljöns tillstånd har varit koppling till de belastningar som i den inledande bedömningen av miljötillståndet i Nordsjön och Östersjön bedömts ha stor negativ påverkan på ekosystemet. En annan uppsättning indikatorer berör påverkan och belastning på miljön i form av tillförsel av näringsämnen och farliga ämnen, samt biologisk och fysisk störning av miljön. Tillsammans utgör indikatorerna ett verktyg för att följa utvecklingen av miljötillståndet och effekter av åtgärder i havsmiljön. Vid val av indikatorer har arbetet delvis utgått från existerande miljöövervakning och redan utvecklade indikatorer. Med denna utgångspunkt uppfylls en rad av havsmiljödirektivets krav, bland annat en god uppföljning av effekter av tillförsel av näringsämnen. Funktionella indikatorer, det vill säga indikatorer som utvärderats och för vilka god miljöstatus har definierats, saknas dock för tio av havsmiljödirektivets 29 kriterier. För uppföljning av biologisk mångfald saknas bland annat miljöövervakning och metoder för att bedöma livsmiljöers tillstånd. För att kunna bedöma fysiska skador på havsbotten saknas en övergripande sammanställning av information om aktiviteter som påverkar havsbottnar samt metodik för att bedöma effekterna. Det saknas också utvecklade indikatorer för det kriterium som berör uppföljning av storleks- och åldersstruktur hos fiskar. Brist på kunskap gör också att inga förslag på svenska indikatorer kan ges för effekter på levande organismer från marint avfall, undervattensbuller, och främmande arter samt att endast ett begränsat antal indikatorer tagits fram som speglar effekter av farliga ämnen. De indikatorer som fastställs i juli 2012 utgör således inte en slutlig lista för att följa upp havsmiljödirektivet. Bristerna kommer att beaktas i det fortsatta genomförandet av havsmiljöförordningen där nästa steg är att anpassa miljöövervakningsprogrammen till uppföljning av miljötillståndet med valda indikatorer senast år 2014 samt att ta fram åtgärdsprogram till år 2015. God miljöstatus ska uppnås genom tillämpning av miljökvalitetsnormer det vill säga rättsligt bindande regler som avspeglar den lägsta godtagbara miljökvaliteten i Nordsjön och Östersjön. För att nå god miljöstatus har elva svenska miljökvalitetsnormer formulerats. Dessa miljökvalitetsnormer omfattar belastning i form av näringsämnen, farliga ämnen, främmande arter, uttag av arter, fysisk påverkan på havsbottnar och avfall i havsmiljön. Målsättningen har varit att utforma miljökvalitetsnormer som motsvarar alla de belastningar som i den inledande bedömningen har identifierats ha en stor påverkan på miljön.
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| 2. |
- Almqvist, Gustaf, et al.
(författare)
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Report of the Benchmark Workshop on Baltic Cod Stocks (WKBALTCOD)
- 2015
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The ICES Benchmark Workshop on Baltic Cod Stocks (WKBALTCOD), chaired by External Chair Jean-Jacques Maguire, Canada and ICES Chair Marie Storr-Paulsen, Denmark, and attended by two invited external experts Verena Trenkel, France and Meaghan Bryan, USA met in Rostock, Germany, 2–6 March 2015 with 39 participants and six countries represented. The objective of WKBALTCOD was to evaluate the appropriateness of data and methods to determine stock status and investigate meth-ods appropriate to use in the single-stock assessment for the cod stock in SD 22–24 and cod in SD 25–32 in the Baltic. Participants in the workshop were a large group with diverse backgrounds representing the industry, fisheries, NGOs, managers and scientists.The single-stock analytic assessment of the eastern Baltic stock was not accepted by the assessment working group (WGBFAS) in 2014 due to severe problems with the input data. The advice for the eastern Baltic cod was, therefore, based on the ICES approach for data-limited stocks. As an outcome ICES decided to establish a bench-mark for both cod stocks and to scope an integrated assessment for the Baltic cod stocks. The first meeting (WKSIBCA) was therefore meant to introduce the interces-sional work conducted since the assessment working group in April 2014, and to reach some conclusions on how to proceed both in the short term (Benchmark in March 2015) and longer term (2–3 years) and was seen as a data compilation work-shop, there is produced a separate report from this workshop. The WKBALTCOD was the 2nd meeting in the benchmark process and was intended to come up with a final stock assessment method, stock annex and input data for both stocks. As it was not possible to reach conclusive decision on the final model to be used for the east Baltic cod stock during the benchmark meeting and as more work on the preferable models was needed, it was decided by the ACOM leadership to prolong the bench-mark process until the assessment working group meeting in April 2015. This deci-sion has led to a relatively long process partly mixed with the assessment working group WGBFAS.It became clear during the benchmark process that although large effort has been put into explaining the underlying processes leading to the changes in the Baltic ecosys-tem, there is still some lack of understanding of the present situation in the eastern Baltic cod stock. Therefore, it was not possible to reach firm conclusions on the final model to be used and therefore not possible to set reference points. It was decided to continue to explore the most promising models and to continue to improve the input data until the assessment working group started in April.The main challenges still to be solved for the Eastern Baltic cod stock is the quantifi-cation of increased natural mortality and decrease in growth. Through several presentations during the workshop (both WKSIBCA and WKBALTCOD) it became clear that natural mortality very likely has increased in later years, due to decreased condition and increased parasite infection. A decrease in growth also seems plausible duo to a decrease in condition and/or selectivity-induced mortality of the largest in-dividuals. However, as none of these parameters are easily estimated, especially with the severe ageing problems, different model assumptions made the output very shaky.For the western Baltic cod, stock identification issues were examined in area SD 24, the intermediate area: based on otolith characteristics and genetics. Due to the results showing a large proportion of east cod in this area, it was decided to split the catch2 | ICES WKBALTCOD REPORT 2015and survey from SD 24 into either the western or eastern Baltic cod stock. It was pos-sible to derive proportions of eastern and western cod in SD 24 back to the mid-1990s.For the western Baltic cod stock a modelled survey indices was included in the as-sessment covering the western part of SD 24 and Area 22+23 and based on a smoothed ALK.Both cod stocks have in the past used commercial tuning fleet to have a better cov-ered of older age groups. It was decided to abound this time-series duo quality issues such as a limited coverage and problems with technical creeping.WKBALTCOD was not able to explore and define reference points for the Western Baltic cod stock during the meeting due to time constraints, but these were calculated and decided by correspondence after the meeting. The recent protocols on estimation procedures developed by WKMSYREF3 for stocks with a full analytical assessment and for data-limited stocks served as objective guidelines to obtain reference point estimates.
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| 3. |
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| 4. |
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| 5. |
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| 6. |
- Björklund, Niklas, et al.
(författare)
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Snytbaggen : åtgärder för lyckade planteringar
- 2014
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Annan publikation (populärvet., debatt m.m.)abstract
- Barrträdsplantor som planterats efter avverkning blir ofta dödade av snytbaggens gnag. Men genom olika åtgärder kan skadorna minskas till en acceptabel nivå. Vilka metoder du bör välja beror bland annat på var i landet hygget ligger. Denna broschyr syftar till att förklara vilken effekt på plantskadorna olika åtgärder ger och hur de kan kombineras i olika delar av Sverige.
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| 7. |
- Broms, Loove, et al.
(författare)
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Coffee Maker Patterns and the Design of Energy Feedback Artefacts
- 2010
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Ingår i: DIS '10 Proceedings of the 8th ACM Conference on Designing Interactive Systems. - New York, NY, USA : ACM. - 9781450301039 ; , s. 93-102
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Konferensbidrag (refereegranskat)abstract
- Smart electricity meters and home displays are being installed in people’s homes with the assumption that households will make the necessary efforts to reduce their electricity consumption. However, present solutions do not sufficiently account for the social implications of design. There is a potential for greater savings if we can better understand how such designs affect behaviour. In this paper, we describe our design of an energy awareness artefact – the Energy AWARE Clock – and discuss it in relation to behavioural processes in the home. A user study is carried out to study the deployment of the prototype in real domestic contexts for three months. Results indicate that the Energy AWARE Clock played a significant role in drawing households’ attention to their electricity use. It became a natural part of the household and conceptions of electricity became naturalized into informants’ everyday language.
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| 8. |
- Broms, Loove, 1977-, et al.
(författare)
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Days in the life of the Energy Aware Clock
- 2011
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Ingår i: Swedish Design Research Journal. - 2000-964X. ; :1, s. 30-37
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Tidskriftsartikel (refereegranskat)abstract
- There is a potential for greater electricity savings if we can better understand how design affects behaviour. This paper describes om design of an energy awareness artefact - the Energy AWARE Clock- and discusses it in relation to behavioural processes in the home. The Energy AWARE Clock showed to play a significant role in drawing households' attention to their electricity use. It became a natural part of the household and conceptions of electricity became natmalized into informants' everyday language.
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| 9. |
- Broms, Loove, 1977-, et al.
(författare)
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The Energy AWARE Clock : Incorporating Electricity Use in the Social Interactions of Everyday Life
- 2009
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Ingår i: Proceedings of the 6th International Symposium on Environmentally Conscious Design andInverse Manufacturing (EcoDesign 2009).
-
Konferensbidrag (refereegranskat)abstract
- New interfaces to the energy system can facilitate changes of habits and provide means to control the household’s use of energy. In this paper, we look at energy use and such interfaces in the home from a socio- technical perspective. We describe how interviews and user observations can be used in combination with the theory of domestication to inform and inspire the design of interfaces to the energy system. As a result of our approach, we present the Energy AWARE Clock, an example of a new type of electricity meter that challenges the norm of how the electricity system is typically represented in the home. The Energy AWARE Clock makes use of a clock metaphor to visualise electricity-use in relation to time in everyday life. Energy-awareness products always challenge domestic social patterns and it is important to consider these aspects in the design process to find successful solutions for the future.
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| 10. |
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| 11. |
- Böhlenius, Henrik, et al.
(författare)
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Differences in Al sensitivity affect establishment of Populus genotypes on acidic forest land
- 2018
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Ingår i: PLoS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 13
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Tidskriftsartikel (refereegranskat)abstract
- Forest lands hold great potential for Populus plantations, but in native boreal forests, soils normally have low pH and thus higher levels of aluminum ions (Al3+ and hydroxides). Aluminum (Al) is one of the major factors limiting plant growth on these soils by inhibiting root growth, thus reducing water and nutrient uptake and slowing growth. There is a large variation in Al resistance both among and within species. In this study, growth responses of greenhouse-grown hybrid aspen (P. tremula x tremuloides) and poplar (P. trichocarpa hybrids) were monitored in relation to changes in Al concentrations. In quartz sand, hybrid aspen was more tolerant to exogenous application of Al than P. trichocarpa hybrids. This difference in Al-tolerance was further confirmed by hematoxylin staining of the roots, with hybrid aspen displaying less staining after Al treatment than poplar clones. When planted on forest land with low pH, hybrid aspen increased growth after planting and showed low mortality. This was not the case for poplar clones; plant height decreased after planting and mortality increased. Together, our results suggest that differences in initial growth and survival on forest land among hybrid aspen and the tested poplar clones may be connected to differences in Al tolerance. Our findings that staining with hematoxylin can identify Al-tolerant Populus genotypes may help identify Al-tolerant genotypes suitable for forest land.
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| 12. |
- Domevscik, Matej, et al.
(författare)
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Effect of drought and pine weevil damage on mechanically protected Norway spruce seedlings
- 2024
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Ingår i: Forest Ecology and Management. - 0378-1127 .- 1872-7042. ; 566
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Tidskriftsartikel (refereegranskat)abstract
- Pine weevils (Hylobius abietis L.) pose a significant threat to conifer seedlings by feeding on the bark, thus damaging or killing seedlings. Historically, insecticides were used to suppress such damage, but were slowly phased out in Sweden due to environmental and health concerns. This study aimed to assess field performance of an alternative protection method: mechanical coating applied to the stem of planted Norway spruce (Picea abies) seedlings. Field trials were conducted on 14 sites in south Sweden, using four different types of mechanical protection (Cambiguard, Conniflex, Ekovax, Hylonox), standard insecticide (Merit Forest), and ambient control. Seven sites were established in the drought year of 2018 and seven more in 2019. This allowed for additional investigation of the effect of drought on seedling establishment and possible interaction with pine weevil damage. Seedlings were surveyed for survival and height after the first, second and fourth growing season. Results show drought as the main source of damage for seedlings planted in 2018, with no significant effect of insecticide or mechanical protection on survival of seedlings. However, mechanical protections performed equally well as insecticide and positively increased survival by 30 %, compared to untreated, four growing seasons after planting for seedlings planted in 2019. Seedling height was not significantly affected by planting year or any of the treatments, suggesting no adverse effects of coating application. However, a synergistic effect between pine weevil damage and drought was observed, where even low levels of pine weevil damage resulted in high mortality for seedlings planted in 2018, compared to those planted in 2019. Additionally, for seedlings planted in 2019, damage to the top of the stem did not result in significant mortality, until high damage levels were reached (40 % and above). The opposite was found for seedlings planted in a 2018 drought year, where both damage to the top and the bottom of the stem followed a linear response. In conclusion, we show that investigated mechanical protection methods can be considered a viable replacement for insecticides, but our results also highlight the importance of considering multiple environmental stressors such as drought and pest damage on seedling establishment.
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| 13. |
- Drössler, Lars, et al.
(författare)
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Natural Regeneration in a Multi-Layered Pinus sylvestris-Picea abies Forest after Target Diameter Harvest and Soil Scarification
- 2017
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Ingår i: Forests. - : MDPI AG. - 1999-4907. ; 8
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Tidskriftsartikel (refereegranskat)abstract
- Forest management in Sweden can be characterized by even-aged silviculture heavily relying on three established harvest regimes: clearcutting, the seed-tree method, and the shelterwood system. Less intense, small-scale retention harvest systems such as single tree and group selection harvest are rarely used. In addition, natural regeneration dynamics without enrichment planting have barely been studied. Consequently, this study examined natural regeneration establishment in a multi-layered Pinus sylvestris-Picea abies forest stand in southwest Sweden after target diameter harvesting and soil scarification. The creation of forest canopy gaps had a positive effect on total seedling density five years after harvest, mainly due to a significantly higher number of Betula pendula individuals. Seedling density of more desirable tree species suitable for continuous cover forestry such as Fagus sylvatica, Quercus petraea and Picea abies also increased substantially in gaps when compared to pre-harvest conditions or the unharvested plots. In contrast, soil scarification did not increase the number of seedlings of desired tree species due to a significant decrease in Picea abies abundance. Soil moisture and gap size significantly improved Betula pendula seedling establishment while a larger number of Quercus petraea seedlings were observed in Vaccinium myrtillus patches. We conclude that canopy gaps are beneficial under the encountered stand conditions to initiate forest regeneration, and that soil scarification without the timely occurrence of a mast year of desired tree species is not effective in the type of forest studied.
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| 14. |
- Eero, Margit, et al.
(författare)
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Food for Thought Eastern Baltic cod in distress : biological changes and challenges for stock assessment
- 2015
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Ingår i: ICES Journal of Marine Science. - : Oxford University Press (OUP). - 1054-3139 .- 1095-9289. ; 72:8, s. 2180-2186
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Tidskriftsartikel (refereegranskat)abstract
- The eastern Baltic (EB) cod (Gadus morhua) stock was depleted and overexploited for decades until the mid-2000s, when fishing mortality rapidly declined and biomass started to increase, as shown by stock assessments. These positive developments were partly assigned to effective management measures, and the EB cod was considered one of the most successful stock recoveries in recent times. In contrast to this optimistic view, the analytical stock assessment failed in 2014, leaving the present stock status unclear. Deteriorated quality of some basic input data for stock assessment in combination with changes in environmental and ecological conditions has led to an unusual situation for cod in the Baltic Sea, which poses new challenges for stock assessment and management advice. A number of adverse developments such as low nutritional condition and disappearance of larger individuals indicate that the stock is in distress. In this study, we (i) summarize the knowledge of recent changes in cod biology and ecosystem conditions, (ii) describe the subsequent challenges for stock assessment, and (iii) highlight the key questions where answers are urgently needed to understand the present stock status and provide scientifically solid support for cod management in the Baltic Sea.
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| 15. |
- Elfving, Karin, 1982-
(författare)
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Epidemiological and Bacteriological Aspects of Spotted Fever Rickettsioses in Humans, Vectors and Mammals in Sweden
- 2013
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Rickettsiae are obligate intracellular gram-negative bacteria transmitted by arthropod vectors. Rickettsiae sometimes cause disease in humans, typically with high fever, headache and occasionally an eschar.In Sweden, Rickettsia helvetica, belonging to the spotted fever group, is the only tick-transmitted rickettsia found free in nature. The pathogenic roll of R. helvetica has not been fully investigated, but it has been implicated in aneruptive fever and cardiac disease.This thesis describes parts of the transmission pathways of rickettsiae in Sweden. Rickettsia infection rates in ticks collected from birds were analysed, and the birds’ role as disseminators and reservoirs was studied. We found that more than one in ten ticks was infected with rickettsia bacteria, predominantly R. helvetica, and that migrating birds contribute not only to long-distance dispersion of bacteria, but also to an inflow of novel and potentially pathogenic rickettsia species, in this case R. monacensis and R. sp. strain Davousti-like species, into Sweden.Further, wild and domestic animals were found to have seroreactivity against R. helvetica, which shows that they are exposed and susceptible to rickettsia. Their role as reservoirs has not been determined, yet they may indirectly be involved in transmission of rickettsia to humans by infected ticks feeding on them.The seroreactivity in humans was also studied. Patients investigated for suspected Borrelioses and blood donors had detectable antibodies against Rickettsia spp., with the highest prevalence detected in the suspected Borreliosis group. This shows that humans in Sweden are exposed to and develop an immune response against rickettsia. The suspicion that R. helvetica may cause severe symptoms was verified by a patient with subacute meningitis where the bacterium was shown for the first time to cause an invasive infection with CNS involvement and where the bacterium was isolated from the patient’s cerebrospinal fluid.Growth characteristics and morphology of R. helvetica were studied to better understand invasiveness and virulence. The findings indicate that the invasiveness is comparable with other rickettsia, though R. helvetica seems to have a stable but slightly slower growth. Rickettsia helvetica is endemic in Sweden and therefore needs to be considered when investigating disease after a tick bite.
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| 16. |
- Gustafsson, Karin, et al.
(författare)
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Shb deficient mice display an augmented TH2 response in peripheral CD4+ T cells
- 2011
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Ingår i: BMC Immunology. - : Springer Science and Business Media LLC. - 1471-2172. ; 12, s. 3-
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Tidskriftsartikel (refereegranskat)abstract
- Background: Shb, a ubiquitously expressed Src homology 2 domain-containing adaptor protein has previously been implicated in the signaling of various tyrosine kinase receptors including the TCR. Shb associates with SLP76, LAT and Vav, all important components in the signaling cascade governing T cell function and develeopment. A Shb knockout mouse was recently generated and the aim of the current study was to address the importance of Shb deficiency on T cell development and function. Results: Shb knockout mice did not display any major changes in thymocyte development despite an aberrant TCR signaling pattern, including increased basal activation and reduced stimulation-induced phosphorylation. The loss of Shb expression did however affect peripheral CD4+ TH cells resulting in an increased proliferative response to TCR stimulation and an elevated IL-4 production level of naïve TH cells. This suggests a TH2 skewing of the Shb knockout immune system, seemingly caused by an altered TCR signaling pattern.Conclusion: Our results indicate that Shb appears to play an important modulating role on TCR signaling, thus regulating the peripheral CD4+ TH2 cell response.
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| 17. |
- Hjelm, Ann, et al.
(författare)
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Identification of the major proteoglycans from human myometrium
- 2001
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Ingår i: Acta Obstetricia et Gynecologica Scandinavica. - : Wiley. - 1600-0412 .- 0001-6349. ; 80:12, s. 1084-1090
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Tidskriftsartikel (refereegranskat)abstract
- Background. During pregnancy and parturition a remodeling within the extracellular matrix of the cervix and the corpus uteri occurs, which is of fundamental importance to a normal labor. The aim of this study is to identify the major proteoglycans in corpus uteri of non-pregnant subjects. Methods. From human uterine tissue proteoglycans were extracted and purified using CsCl-density gradient centrifugation, gel and ion-exchange chromatography. The proteoglycans were quantified and identified by Alcian Blue before and after ABC-digestion and by Western blotting. Results. The results showed that the corpus uteri contains a substantial amount of proteoglycans, 1.825 mug/mg wet weight. Decorin is dominating, constituting 63% of the total amount of proteoglycans. Heparan sulphate proteoglycans accounted for 20% and biglycan for 16%. Less than 1% consisted of the large proteoglycan versican. Conclusions. Further investigations must be performed to provide more information of the biological role of the proteoglycans in the uterus, especially during labor, by the presence of heparan sulphate proteoglycans and the minute presence of versican which indicate that the proteoglycan composition and organization is different to that of the cervix.
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| 18. |
- Hjelm, Anna-Karin, 1972-
(författare)
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Kinetic investigation of LiMn2O4 for rechargeable lithium batteries
- 2002
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- This thesis is concerned with kinetic characterisation of theinsertion compound LiMn2O4, which is used as positive electrodematerial in rechargeable lithium batteries. Three different typesof electrode configurations have been investigated, namely singleparticles, thin films and composite electrodes. Differentelectrochemical techniques, i.e. linear sweep voltammetry (LSV),electrochemical impedance spectroscopy (EIS), potential step, andgalvanostatic experiments were applied under various experimentalconditions. The majority of the experimental data were analysedby relevant mathematical models used for describing the reactionsteps of insertion compounds.It was concluded that a model based on interfacialcharge-transfer, solid-phase diffusion and an external iR-dropcould be fairly well fitted to LSV data measured on a singleelectrode system over a narrow range of sweep rates. However, itwas also found that the fitted parameter values vary greatly withthe characteristic length and the sweep rate. This indicates thatthe physical description used is too simple for explaining theelectrochemical responses measured over a large range of chargeand discharge rates.EIS was found to be a well-suited technique for separatingtime constants for different physical processes in the insertionand extraction reaction. It was demonstrated that the impedanceresponse is strongly dependent on the current collector used.According to the literature, reasonable values of theexchange-current density and solid-phase diffusion coefficientwere determined for various states-of-discharge, temperatures andelectrolyte compositions. Experiments were carried out in bothliquid and gel electrolytes. A method which improves thedistinction between the time constants related to thematerial’s intrinsic properties and possible porous effectsis presented. The method was applied to composite electrodes.This method utilises, in addition to the impedance responsemeasured in front of the electrode, also the impedance measuredat the backside of the electrode.Finally, the kinetics of a composite electrode was alsoinvestigated by in situ X-ray diffraction (in situ XRD) incombination with galvanostatic and potentiostatic experiments. Noevidence of lithium concentration gradients could be observedfrom XRD data, even at the highest rate applied (i.e. ~6C), thusexcluding solid-phase diffusion and also phase-boundary movement,as described by Fick’s law, as the ratelimiting step.Key words:linear sweep voltammetry, electrochemicalimpedance spectroscopy, potential step, in situ X-raydiffraction, microelectrodes, electrode kinetics, LiMn2O4cathode, rechargeable lithium batteries
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| 19. |
- Hjelm, Barbara, et al.
(författare)
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High nuclear RBM3 expression is associated with an improved prognosis in colorectal cancer
- 2011
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Ingår i: Proteomics Clinical Applications. - : Wiley. - 1862-8354 .- 1862-8346. ; 5:11-12, s. 624-635
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: In this study, we investigated the prognostic impact of human RBM3 expression in colorectal cancer using tissue microarray-based immunohistochemical analysis. Experimental design: One polyclonal antibody and four monoclonal anti-RBM3 antibodies were generated and epitope mapped using two different methods. Bacterial display revealed five distinct epitopes for the polydonal antibody, while the four mouse monoclonal antibodies were found to bind to three of the five epitopes. A peptide suspension bead array assay confirmed the five epitopes of the polydonal antibody, while only one of the monoclonal antibodies could be mapped using this approach. Antibody specificity was confirmed by Western blotting and immunohistochemistry, including siRNA-mediated knock-down. Two of the antibodies (polydonal and monoclonal) were subsequently used to analyze RBM3 expression in tumor samples from two independent colorectal cancer cohorts, one consecutive cohort (n = 270) and one prospectively collected cohort of patients with cancer of the sigmoid colon (n = 305). RBM3-expression was detected, with high correlation between both antibodies (R = 0.81, p < 0.001). Results: In both cohorts, tumors with high nuclear RBM3 staining had significantly prolonged the overall survival. This was also confirmed in multivariate analysis, adjusted for established prognostic factors. Conclusion and clinical relevance: These data demonstrate that high tumor-specific nuclear expression of RBM3 is an independent predictor of good prognosis in colorectal cancer.
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| 20. |
- Hjelm, Karin, et al.
(författare)
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A comparison of long-term effects of scarification methods on the establishment of Norway spruce
- 2013
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Ingår i: Forestry. - : Oxford University Press (OUP). - 0015-752X .- 1464-3626. ; 86, s. 91-98
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Tidskriftsartikel (refereegranskat)abstract
- Scarification is the most common measure to improve the planting environment in Sweden. However, different scarification methods give varying results. During the early 1990s, a nation-wide experiment with 10 field installations was established in order to test the effect of several scarification methods, including two intensities of soil inversion and mounding, on growth of planted Norway spruce seedlings and in comparison with no scarification (i.e. control). Eighteen growing seasons after planting, a higher seedling survival was found following soil inversion (77 per cent for normal and 76 per cent for intensive) compared with mounding (67 per cent) and control (57 per cent). The mean height of the planted trees across all sites 18 years after planting was 413 and 430 cm following normal and intensive soil inversion, respectively, 424 cm after mounding and 346 cm in the control. The difference in height between the scarification treatments and the control corresponded to a time gain of approximate to 4 years of growth after 18 years. However, the length of the leading shoot was not affected by scarification after 1418 years, indicating that scarification did not affect growth beyond the establishment phase. Scarification reduced variation in height of the planted trees. On scarified plots, the number of naturally regenerated trees increased with more than 100 per cent to reach a mean value of 2300 stems per hectare.
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| 21. |
- Hjelm, Katarina, et al.
(författare)
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A qualitative study of developing beliefs about health, illness and healthcare in migrant African women with gestational diabetes living in Sweden
- 2018
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Ingår i: BMC Women's Health. - : Springer Science and Business Media LLC. - 1472-6874. ; 18:1
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Tidskriftsartikel (refereegranskat)abstract
- Background: Gestational diabetes (GDM) is associated with health risks for both mother and child, and is particularly relevant to migrant women and women of African origin. With today's extensive global migration, contact with the new society and health system confronts the migrant's culture of origin with the culture of the host country. The question is whether immigrants' patterns of beliefs about health, illness, and health-related behaviour change over time, as no previous studies have been found on this topic. The purpose was to explore development over time, during and after pregnancy, of beliefs about health, illness and healthcare in migrant women with GDM born in Africa living in Sweden, and study the influence on self-care and care seeking. Methods: Qualitative prospective study. Semi-structured interviews, with 9 women (23-40 years), on three different occasions: during pregnancy (gestational weeks 34-38), and 3 and 14 months after delivery managed at an in-hospital diabetes specialist clinic in Sweden. Results: Beliefs were rather stable over time and mainly related to individual and social factors. GDM was perceived as a transient condition as health professionals had informed about it, which made them calm. None, except one, expressed worries about relapse and the health of the baby. Instead women worried about being unable to live an ordinary life and being bound to lifestyle changes, particularly diet, developing diabetes and needing insulin injections. Over time knowledge of appropriate diet improved, although no advice was experienced given by the clinic after delivery. The healthcare model was perceived as well functioning with easy access but regular follow-ups were requested as many (decreasing over time) were unsure whether they still had GDM and lacked information about GDM and diet. During pregnancy information was also requested about the healthcare system before/after delivery. Conclusions: Beliefs changed to a limited extent prospectively, indicated low risk awareness, limited knowledge of GDM, irrelevant worries about future health, and being unable to live a normal life, associated with problematic lifestyle changes. Beliefs about the seriousness of GDM in health professionals influenced patients' beliefs and health-related behaviour. The healthcare organisation urgently needs to be improved to deliver appropriate and timely information through competent staff.
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| 22. |
- Hjelm, Katarina, 1958-, et al.
(författare)
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Beliefs about health and illness in Latin-American migrants with diabetes living in Sweden
- 2013
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Ingår i: Open Nursing Journal. - : Bentham Science Publishers Ltd.. - 1874-4346. ; 7, s. 57-65
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Tidskriftsartikel (refereegranskat)abstract
- The study explored beliefs about health and illness in Latin American migrants diagnosed with diabetes mellitus (DM) living in Sweden, and investigated the influence on health-related behavior including self-care and care-seeking behavior. Migrants are particularly affected in the diabetes pandemia. Beliefs about health and illness determine health-related behaviour and health but no studies have been found on Latin American migrants with DM. An explorative study design with focus-group interviews of nine persons aged 36-77 years from a diabetes clinic was used. Health was described from a pathogenetic or a salutogenetic perspective: 'freedom from disease or feeling of well-being', and being autonomous and able to work. Economic hardship due to expenses for medications and food for DM affected health. Individual factors such as diet, exercise and compliance with advice, and social factors with good social relations and avoidance of stress, often caused by having experienced severe events related to migrational experiences, were considered important for maintaining health and could cause DM. Disturbed relations to others (social factors), punishment by God or Fate (supernatural factors), intake of diuretics and imbalance between warmth and cold (natural factors) were also perceived as causes. A mix of biomedical and traditional explanations and active self-care behaviour with frequent use of herbs was found. It is important to assess the individual's beliefs, and health professionals, particularly nurses, should incorporate discussions of alternative treatments and other components of explanatory models and co-operate with social workers to consider influence of finances and migrational experiences on health.
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| 23. |
- Hjelm, Katarina, 1958-, et al.
(författare)
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Beliefs about health and illness postpartum in women born in Sweden and the Middle East.
- 2009
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Ingår i: Midwifery. - : Elsevier. - 0266-6138 .- 1532-3099. ; 25:5, s. 564-575
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Tidskriftsartikel (refereegranskat)abstract
- The aim was to explore beliefs about health and illness three months postpartum in women born in Sweden and the Middle East, and to study whether they perceive gestational diabetes mellitus (GDM) as a prediabetic condition. Methods: an explorative study using semi-structured interviews 3 months postpartum. Interviews were held three months after birth. Consecutive sample of women with GDM; 13 born in Sweden and 14 born in the Middle East. The results showed that irrespective of origin, health was focused on well-being and being able to care for the baby. Many Middle Eastern women did not know how long GDM would last or said that they had been informed by staff about its transience. They worried about still having diabetes mellitus, and the disease directed them to self-monitoring of blood glucose and the desire for health-care staff to verify the disease. They showed tendencies to dietary changes. Swedish-born women feared development of type 2 DM and had undertaken active health-related behaviour. In conlusion, beliefs about health and illness differ, change and affect awareness of risk and self-care practice postpartum. Swedish women showed high risk awareness with changes in life style and the desire for more information to avoid developing DM. Middle Eastern women showed increased risk awareness and sought help from staff in checking whether GDM was present in the postpartum period. For clinical practice it is important to recognise that Middle Eastern women, in contrast to Swedish-born women, have not incorporated the message that GDM is a risk marker for future development of DM. Health professionals have a significant role in supporting women and their families undergoing the transition to motherhood, particularly migrants in a new country. Identifying individual beliefs is of utmost importance. Pre-existing baby health clinics can be developed to address mothers' needs as well as the health of the baby.
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| 24. |
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| 25. |
- Hjelm, Karin, et al.
(författare)
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Effects of mechanical site preparation and slash removal on long-term productivity of conifer plantations in Sweden
- 2019
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Ingår i: Canadian Journal of Forest Research. - : Canadian Science Publishing. - 0045-5067 .- 1208-6037. ; 49:10, s. 1311-1319
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Tidskriftsartikel (refereegranskat)abstract
- Mechanical site preparation is commonly used to increase survival and early growth of newly planted seedlings. Ideally, any early positive effects of site preparation should persist for a long time, but concerns have been raised as to whether intensive site preparation might have a negative effect on the long-term productivity of a stand. The present study was therefore designed to investigate the long-term effects of different site-preparation methods on productivity and determine any possible interactions with tree species and site fertility. In the 1980s, a randomized block experiment was established at sites throughout Sweden. Four site-preparation methods of various intensities were performed on different sites: (i) an untreated control, (ii) disc trenching, (iii) mounding, and (iv) ploughing. As a complementary treatment, slash was either retained or removed from some plots. Depending on soil moisture class, geographical position, and site index, Norway spruce (Picea abies (L.) Karst.), Scots pine (Pinus sylvestris L.), or lodgepole pine (Pinus contorta Douglas ex Loudon) were planted in pure stands. Growth variables such as height and diameter were measured during the first years after establishment. After about 30 years, these variables were remeasured at the level of individual trees. Overall, an increased production of the planted trees after site preparation was found. Neither intensive site preparation (such as ploughing) nor slash removal had any negative effect on the long-term productivity of these experimental stands.
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| 26. |
- Hjelm, Karin
(författare)
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Effects of pre-harvest fertilization and subsequent soil scarification on the growth of planted Pinus sylvestris seedlings and ground vegetation after clear-felling
- 2013
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Ingår i: Silva Fennica. - : Finnish Society of Forest Science. - 0037-5330 .- 2242-4075. ; 47
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Tidskriftsartikel (refereegranskat)abstract
- Fertilization and scarification are both performed to increase tree production at different stages of forest rotation periods. In this study, the effects of previous nitrogen fertilizations and scarification after clear felling on planted Pinus sylvestris L. seedlings and ground vegetation were investigated. Two fertilization experiments established around 1980 were harvested in 2006, after which the plots were scarified by disc trenching and re-planted. The plots had been repeatedly fertilized over a 20-year period before harvesting, with total N doses of 0, 450, 900 or 1800 kg N ha(-1). After five growing seasons, the growth, survival and nutrient contents of the seedlings were measured, and ground vegetation was collected to estimate its biomass and nutrient content. Pre-harvest fertilization alone had only minor effects on the results, but scarification increased both the survival and growth of the planted seedlings. However, without scarification, seedling mortality increased with increasing fertilization intensity. The ground vegetation biomass was higher in plots without scarification, but the total biomass of seedlings and ground vegetation was similar in all treatments. Scarification thus favored seedling growth at the expense of ground vegetation. Only a few effects on nutrient content were found, but there were no signs of nutrient imbalance in any of the treatments. At higher levels of fertilization, the K: N ratio in the seedlings decreased while the K content in the ground vegetation increased. Overall, scarification had a greater impact than pre-harvest fertilization on the planted seedlings and the ground vegetation.
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| 27. |
- Hjelm, Katarina G, et al.
(författare)
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Beliefs about health and diabetes in men of different ethnic origin
- 2005
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Ingår i: Journal of Advanced Nursing. - Oxon, UK : Blackwell Publishing. - 0309-2402 .- 1365-2648. ; 50:1, s. 47-59
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Tidskriftsartikel (refereegranskat)abstract
- AIM: This paper reports the findings of a study exploring the health and illness beliefs of men with diabetes, who were from different cultural backgrounds and living in Sweden.BACKGROUND: No studies have been reported that have focused on the beliefs about health and illness in men with diabetes mellitus of different ethnic origin. Beliefs may affect self-care and care-seeking behaviour.METHOD: An explorative study design and purposive sampling procedure was used. Focus-group interviews were held with 35 men with diabetes and aged between 39 and 78 years. Fourteen participants were born in Arabic countries, 10 in former Yugoslavia and 11 in Sweden.FINDINGS: Important factors for health were the ability to be occupied/employed and economically independent and, especially among Arabs and former Yugoslavians, sexual functioning. Swedes focused on heredity, lifestyle and management of diabetes, while non-Swedes claimed the influence of supernatural factors and emotional stress related to the role of being an immigrant and migratory experiences as factors related to development of diabetes and having a negative influence on health. Swedes and Arabs described health as "freedom from disease" in contrast to many former Yugoslavians who described health as "wealth and the most important thing in life". Knowledge about diabetes was limited among the men studied, but Arabs showed an active information-seeking behaviour compared with Swedes and former Yugoslavians. Non-Swedish respondents, particularly Arabs, had sought help from health care professionals to a greater extent than Swedes, who were more likely to use self-care measures.CONCLUSION: Being occupied/employed and having knowledge about the body and management of diabetes are important for positive health development. There are dissimilarities in beliefs about health and diabetes that influence self-care behaviour and health care seeking. Men's cultural backgrounds and spiritual beliefs need to be considered in diabetes care.
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| 28. |
- Hjelm, Katarina, 1958-, et al.
(författare)
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Gestational diabetes : changed health beliefs in migrant women from five Asian countries living in Sweden: a prospective qualitative study
- 2022
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Ingår i: Primary Health Care Research and Development. - : Cambridge University Press. - 1463-4236 .- 1477-1128. ; 23
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Tidskriftsartikel (refereegranskat)abstract
- Aim: The aim of this study was to explore the temporal development of beliefs about health, illness and health care in migrant women with gestational diabetes (GD) born in Asia residing in Sweden, and the influence on health-related behaviour in terms of self-care and seeking care. Background: Migrant Asian women are a high-risk group for developing GD. Adapting to the culture in the new society and the healthcare system, being diagnosed with GD and becoming a mother is demanding. The question is whether Asian migrants' patterns of beliefs and behaviour change over time, as no previous study has been revealed on this topic. Method: Qualitative prospective exploratory study. Semi-structured interviews were held on three occasions: during pregnancy and three and fourteen months after delivery, with women born in Asia, diagnosed with GD. Data were analysed with qualitative content analysis. Findings: There was a temporal change of beliefs influencing health-related behaviour, showing a rising curve in risk awareness. An increasing number of persons described developing a healthy diet/lifestyle based on initial advice and shifted focus from the child to worries about the woman's health and risk of developing type 2 diabetes and being unable to care for the child/family. Also, the number of women perceiving GD as a transient condition decreased and more believed it would last forever. Beliefs about health care were unchanged, the healthcare model was perceived working well but information about GD and follow-ups was requested even after delivery, and competent staff was expected. Health professionals' beliefs about the seriousness of GD influence patients' beliefs and need to be considered. Migrant women need support with adequate information, based on their individual beliefs, to continue develop a sustainable healthy lifestyle even after giving birth, to promote health and prevent type 2 diabetes.
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| 29. |
- Hjelm, Katarina, 1958-, et al.
(författare)
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Gestational diabetes: prospective interview-study of the developing beliefs about health, illness and health care in migrant women.
- 2012
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Ingår i: Journal of Clinical Nursing. - Hoboken, NJ, USA : Wiley. - 0962-1067 .- 1365-2702. ; 21:21-22, s. 3244-3256
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this study was to explore the development over time of beliefs about health, illness and health care in migrant women with gestational diabetes mellitus born in the Middle East and living in Sweden. Further to study the influence of beliefs on self-care and care seeking behaviour. There is an extensive global migration and contact with the new society and health care confronts the migrant's culture of origin with the culture of the host country. The question is whether the migrants' patterns of beliefs about health, illness and health-related behaviour change over time? A qualitative prospective exploratory study was implemented. Semi-structured interviews were held with 14 women, aged 28-44 years, in gestational weeks 34-38 and three and 14 months after delivery.The results showed a U-shaped development of beliefs, from focusing on worries about the baby's health during pregnancy and trying to comply with advice from health care staff, particularly a healthy diet, through regression to dietary habits (with intake of more sugar and less fibre) and lifestyle held before being diagnosed with gestational diabetes mellitus three months after delivery but then back to a healthy diet and lifestyle and worries focusing on their own risk, as mothers, of developing type 2 diabetes and being unable to care for the child after one year. Over time, the number of persons perceiving gestational diabetes mellitus as a transient condition decreased. Respondents lacked information about the disease, diet and follow-ups. Beliefs changed over time and influenced health-related behaviour. Beliefs about the seriousness of gestational diabetes mellitus among health professionals' influence development of patients' beliefs. Pregnancy should be used as an opportunity to provide complete information about the disease and future health risks. Continous information should be given after delivery and wishes for regular follow-ups should be met.
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| 30. |
- Hjelm, Katarina, et al.
(författare)
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Management of gestational diabetes from the patient's perspective--a comparison of Swedish and Middle-Eastern born women.
- 2007
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Ingår i: Journal of Clinical Nursing: Management of gestational diabetes from the patient's perspective--a comparison of Swedish and Middle-Eastern born women.. ; 16:1, s. 168-78
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Tidskriftsartikel (refereegranskat)abstract
- The aim was to evaluate patients' perceptions of a specialized diabetes clinic for management of women with gestational diabetes born in Sweden and the Middle East and its contribution to a decreased level of stress and improved coping capability to promote health in patients receiving care.Method: Semi-structured individual interviews by external evaluators. Participants were females with gestational diabetes, 13 born in Sweden and 14 born in the Middle East.Findings: The present healthcare model was perceived as functioning well. Swedish women were problem focused and information seeking. Frustration and stress were increased due to perceived delay in information concerning gestational diabetes, limited access to telephone service and lack of confidence in staff because they lacked the expected competence. Control of gestational diabetes and pregnancy by different persons led to perceived lack of holistic care. Women from the Middle East felt cared, had been given the necessary information and claimed to follow advice. Adequate information reduced respondents' anxiety and increased their control over the situation.The clinic needs to be further improved by adapting programmes to persons to become problem focused by giving adequate information immediately.
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| 31. |
- Hjelm, Katarina, et al.
(författare)
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Management of gestational diabetes from the patient's perspective - a comparison of Swedish and Middle-Eastern born women.
- 2007
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Ingår i: Journal of Clinical Nursing. - Oxon, UK : Wiley. - 1365-2702 .- 0962-1067. ; 16:1, s. 168-178
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Tidskriftsartikel (refereegranskat)abstract
- Aim. To explore patients' evaluation of a specialized diabetes clinic for management of women with gestational diabetes born in Sweden and the Middle East and its contribution to a decreased level of stress and improved coping capability to promote health in patients receiving care. Background. No studies comparing patients' perceptions of healthcare in women of different origin with gestational diabetes have been found. A perceived clinical problem in specialized diabetes care is of lower activity level in self-care in foreign- than Swedish-born women and the question is whether the healthcare organization is optimal in meeting different individuals' needs. Design. Explorative study. Method. Semi-structured individual interviews by external evaluators. Participants. Consecutive sample. Females with gestational diabetes, 13 born in Sweden and 14 born in the Middle East. Results. The healthcare model was perceived as functioning well. Swedish women were problem focused and information seeking. Frustration and stress were increased due to perceived delay in information concerning gestational diabetes, limited access to telephone service and lack of confidence in staff because they lacked the expected competence. Control of gestational diabetes and pregnancy by different persons led to perceived lack of holistic care. Women from the Middle East felt cared, had been given the necessary information and claimed to follow advice. Adequate information reduced respondents' anxiety and increased their control over the situation. Conclusions. The clinic needs to be further improved by adapting programmes to persons to become problem focused by giving adequate information immediately. Relevance to clinical practice. Cultural differences in coping strategies and attitudes to gestational diabetes need to be considered. Training of staff working with gestational diabetes patients is urgently needed.
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| 32. |
- Hjelm, Katarina, 1958-, et al.
(författare)
-
Migrant Middle Eastern women with gestational diabetes seven years after delivery - positive long-term development of beliefs about health and illness shown in follow-up interviews
- 2021
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Ingår i: Primary Health Care Research and Development. - : Cambridge University Press. - 1463-4236 .- 1477-1128. ; 22
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Tidskriftsartikel (refereegranskat)abstract
- Aim: No previous studies have been found focusing on the long-term development of beliefs about health, illness and healthcare in migrant women with gestational diabetes mellitus (GDM). The aim of this study was to explore this and the influence on health-related behaviour (i.e. self-care and care seeking) in migrant women from the Middle East living in Sweden seven years after delivery.Background: GDM is increasing, particularly in migrant women. The risk of adverse outcomes of GDM for health can be improved by interventions reducing blood glucose and lifestyle modifications which medicalise the woman's pregnancy due to intensive follow-up and demanding self-care. The reactions might have an enduring impact on the women's long-term psychological and physical health and adoption of preventive health behaviours.Method: Qualitative exploratory study. Semi-structured follow-up interviews 7 years after delivery with women previously interviewed in gestational weeks 34-38 and 3 and 14 months after delivery. Data analysed with qualitative content analysis.Findings: Health meant freedom from illness, feeling well and living long to be able to care for the children. The present situation was described either positively, changing to a healthier lifestyle, or negatively, with worries about being affected by type 2 diabetes. Beliefs changed among the majority of women, leading to a healthier lifestyle, and they looked positively back at the time when diagnosed and their reactions to it. With few exceptions, they were confident of being aware of future health risks and felt responsible for their own and their children's health/lifestyle. None except those diagnosed with type 2 diabetes had been in contact with healthcare since the last follow-up a year after delivery. Yet, they still would like and need a healthcare model delivering more information, particularly on developing a healthy lifestyle for children, and with regular check-ups also after the first year after delivery.
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| 33. |
- Hjelm, Karin
(författare)
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Plantation Forestry, Tree Breeding, and Novel Tools to Support the Sustainable Management of Boreal Forests
- 2023
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Ingår i: Boreal Forests in the Face of Climate Change : Sustainable Management. - Cham : Springer International Publishing. - 9783031159879 ; :74, s. 383-401
-
Bokkapitel (refereegranskat)abstract
- Successful stand regeneration is one of the keystone elements of sustainable forest management. It ensures that ecosystems submitted to stand-replacing disturbances return to a forested state so that they can maintain the provision of wood fiber, biodiversity, carbon sequestration, and other ecosystem services. This chapter describes how plantation forestry, including tree breeding, and novel tools, such as genomic selection, can support the sustainable management of boreal forests in the face of climate change by, among other benefits, reducing management pressure on natural forests and favoring ecosystem restoration.
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| 34. |
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| 35. |
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| 36. |
- Holmström, Emma, et al.
(författare)
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Natural Regeneration on Planted Clearcuts—The Easy Way to Mixed Forest?
- 2016
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Ingår i: Open Journal of Forestry. - : Scientific Research Publishing, Inc.. - 2163-0429 .- 2163-0437. ; 6, s. 281-294
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Tidskriftsartikel (refereegranskat)abstract
- Establishing mixed stands by stimulating natural in combination with planting could potentially ensure adequate stocking and meet shifting demands for forest products. Two long-term experiments were separately established in former Norway spruce (Picea abies L. Karst) stands in southern Sweden to be able to evaluate mixed forest establishment and management. The treatment plots were treated with different intensity of soil scarification (disc trenching, soil inversion and control) to test effects of soil disturbance on regeneration success. Five years later, both experiments were used for a first evaluation, where seedlings of all naturally regenerated tree species were counted together with estimates of the cover and height of other vegetation. This was made in sample plots in symmetric grids. Testing the effects of scarification and distance to seed source on natural regeneration of silver birch (Betula pendula Roth.) and downy birch (B. pubescens Ehrh.) showed that both scarification type and degree of soil disturbance significantly affected seedling counts but only if seed sources were close. In conclusion, conventional management practices for regenerating coniferous forest may be suitable for establishing mixed forest stands with combinations of planted and naturally regenerated seedlings.
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| 37. |
- Holmström, Emma, et al.
(författare)
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Scenario analysis of planting density and pre-commercial thinning: will the mixed forest have a chance?
- 2016
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Ingår i: European Journal of Forest Research. - : Springer Science and Business Media LLC. - 1612-4669 .- 1612-4677. ; 135, s. 885-895
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Tidskriftsartikel (refereegranskat)abstract
- In the establishment phase, several management alternatives could be applied that affect the species composition of the future stand. In this study, tree seedling data from experiments with planted Norway spruce (Picea abies L. Karst) and naturally regenerated species, mainly Silver birch (Betula pendula Roth), were used for six simulated pre-commercial thinning (PCT) scenarios. The scenarios included both monocultures and mixed stand alternatives with various initial spacing of the planted Norway spruce (0, 1600 or 2800 seedlings) and selection of main stems based on relative heights. Further stand development and individual tree growth were simulated until final harvest. Potentially, based on findings of the seedling measurements, the stands could be mixed with five to six species, but the browsing pressure from ungulates reduced this possibility since the height growth for all species except Norway spruce was highly affected by browsing. The simulated mixtures had a small variation between the PCT scenarios for the maximum mean annual increment (about 10 %). Although the growth was similar for Norway spruce, the proportion of birch in the final stands differed from 3 to 21 % between treatments and none of the high-density planting treatments generated a mixed Norway spruce-birch forest at the time of final felling.
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| 38. |
- Jannasch, Patric
(creator_code:cre_t)
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A binder and/or electrolyte material
- 2001
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Patent (övrigt vetenskapligt/konstnärligt)abstract
- A binder and/or electrolyte material and method for production thereof, which material is intended to be used in the preparation of a porous electrode (5) for a cell (100), wherein the binder and/or electrolyte material (20) comprises an ion conducting polymer (10).
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| 39. |
- Jonsson, Axelina, et al.
(författare)
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Will intensity of forest regeneration measures improve volume production and economy?
- 2022
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Ingår i: Scandinavian Journal of Forest Research. - : Informa UK Limited. - 0282-7581 .- 1651-1891. ; 37, s. 200-212
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Forskningsöversikt (refereegranskat)abstract
- The prevailing regeneration methods in Scandinavian countries are artificial regeneration methods including measures such as site preparation and planting. These measures are considered to be a part of a more intensive forest management and require an initial investment. The use of artificial regeneration measures can, however, increase the growth of a forest stand. In this study, the purpose was to investigate if such an investment is profitable by comparing three different intensity levels (low, medium and high) applied during the regeneration phase, with aspect on both economics (LEV, land expectation value) and growth (MAI, mean annual increment) after a full rotation. The forest stands used in this study were regenerated between 1984 and 1988 and the future growth of the stands was simulated using Heureka StandWise. It was clear that naturally regenerated (low intensity) stands resulted in better economics than stands actively regenerated (medium and high intensity). However, actively regenerated stands resulted in both higher volume production and growth, and the uncertainty of regeneration success was reduced using artificial regeneration measures. These factors are important when considering both the ongoing mitigation of carbon dioxide in the atmosphere and future access to raw material.
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| 40. |
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| 41. |
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| 42. |
- Larsson, Karin, et al.
(författare)
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Differences in self-reported health between cardiac arrest survivors with good cerebral performance and survivors with moderate cerebral disability : a nationwide register study
- 2022
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Ingår i: BMJ Open. - : BMJ Publishing Group Ltd. - 2044-6055. ; 12:7
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Tidskriftsartikel (refereegranskat)abstract
- Objective The aim was to compare self-reported health between cardiac arrest survivors with good cerebral performance (CPC 1) and survivors with moderate cerebral disability (CPC 2). Methods This comparative register study was based on nationwide data from the Swedish Register of Cardiopulmonary Resuscitation. The study included 2058 in-hospital and out-of-hospital cardiac arrest survivors with good cerebral performance or survivors with moderate cerebral disability, 3-6 months postcardiac arrest. Survivors completed a questionnaire including the Hospital Anxiety and Depression Scale (HADS) and EQ-5D five-levels (EQ-5D-5L). Data were analysed using ordinal and linear regression models. Results For all survivors, the prevalence of anxiety and depression symptoms measured by the HADS was 14% and 13%, respectively. Using the EQ-5D-5L, the cardiac arrest survivors reported most health problems relating to pain/discomfort (57%), followed by anxiety/depression (47%), usual activities (46%), mobility (40%) and self-care (18%). Compared with the survivors with good cerebral performance, survivors with moderate cerebral disability reported significantly higher symptom levels of anxiety and depression measured with HADS, and poorer health in all dimensions of the EQ-5D-5L after adjusting for age, sex, place of cardiac arrest, aetiology and initial rhythm (p<0.001). Conclusions These findings stress the importance of screening for health problems in all cardiac arrest survivors to identify those in need of professional support and rehabilitation, independent on neurological outcome.
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| 43. |
- Larsson, Karin, et al.
(författare)
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Ways of understanding cognitive impairment in cardiac arrest survivors : a phenomenographic study
- 2021
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Ingår i: Intensive & Critical Care Nursing. - : Elsevier. - 0964-3397 .- 1532-4036. ; 63
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Tidskriftsartikel (refereegranskat)abstract
- Aim: To describe the variation in ways that registered nurses perceive and understand cognitive impair- ment in cardiac arrest survivors.Design: A qualitative, inductive design with individual semi-structured interviews was applied. Data was analysed using a phenomenographic approach.Setting: The participants were nineteen Swedish registered nurses, experienced in cardiovascular care and providing follow-up care.Findings: The nurses perceived the cognitive impairment of the survivors in qualitatively different ways, as illustrated in two categories: ‘The perceptible and obvious’ and ‘The elusive and challenging’. The nurses perceived a variety of signs of cognitive impairment, emotional expressions related to these, and recovery from cognitive impairment. They perceived confidence in capturing cognitive function when they understood the signs of cognitive impairment as severe and obvious. However, it was per- ceived as difficult to assess cognitive function when impairments were subtle, resulting in uncertainty in terms of how to make assessments. Nurses made use of their own strategies for assessments, which were sometimes found to be inadequate when they understood that they had misinterpreted the sur- vivors’ cognitive impairment.Conclusion: Nurses feel uncertainty regarding detecting mild impairment in cardiac arrest survivors. By involving next of kin, nurses will gain a broader understanding of survivors’ cognitive function.
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| 44. |
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| 45. |
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| 46. |
- Nordin, Per
(författare)
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Regeneration measures in time and space : Site preparation, planting and digital tools
- 2023
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Regeneration success depends on decisions made based on factors on aregional, site, and microenvironmental level. Therefore, understanding andmapping of such factors between and within sites can guide decisions forbetter seedling establishment. Thus, the aim of this thesis was to findcombinations of regeneration measures that result in low seedling mortalityand high growth. Additionally, to explore the potential of digital tools inregeneration planning. Aims were handled using field experiments and asurvey, by integrating digital tools in the analysis and experimental set-up.Increased precipitation and decreased air temperatures between April andOctober during the planting year lowered seedling mortality. Planting inmineral soil also lowered the mortality rate, which emphasized theimportance of planting and site preparation quality (Paper I). Selection ofsite preparation method was found to be of minor importance. The sitepreparation’s ability to create suitable planting spots was most important forseedling survival and growth. Selection of site preparation affected soildisturbance, and natural regeneration was promoted with all methods usedin the experiments (Paper II). Adapting planting position choice, followingsite preparation, to within-site variation was valuable to decrease mortalityrates and promote growth (Paper II-III). In wet conditions, elevatedplanting positions were advantageous compared to lower ones, but moreflexibility could be applied in drier conditions. Norway spruce, Scots pine,and silver birch reacted differently to planting position choice (Paper III).Paper I-III indicated that digital tools could be used in regenerationplanning. A depth-to-water-raster successfully explained seedling mortalityand growth in the extreme ends of the soil moisture spectrum. Using remotesensing derived variables can be valuable for further mapping andunderstanding of between and within-site variation in future regenerationplanning. There were no long-term negative effects on stand productivityafter 30 years following site preparation. The standing volume was largestafter ploughing but disc trenching and mounding also had higher standingvolume than the unscarified control (Paper IV). I conclude that regenerationdecisions made today, regarding species selection and regeneration method,should strive for increased precision for the benefit of the forests oftomorrow.
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| 47. |
- Nordin, Per, et al.
(författare)
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Successful spruce regenerations : impact of site preparation and the use of variables from digital elevation models in decision-making
- 2022
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Ingår i: Scandinavian Journal of Forest Research. - : Taylor & Francis. - 0282-7581 .- 1651-1891. ; 37:1, s. 33-44
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Tidskriftsartikel (refereegranskat)abstract
- Various site preparation methods are used in Swedish forestry. However, some methods can lead to unnecessary disturbance, which could be avoided by using variables from digital elevation models in management decisions. The current study aimed to investigate how different site preparation methods, and their intensities, affect Norway spruce (Picea abies (L.) Karst.) regeneration. Additional aims were to clarify how these methods affect soil disturbance and vegetation development, along with how variables from digital elevation models could be used in silvicultural decision-making. Experimental sites were established in southern Sweden to assess five different site preparation treatments with different planting densities: (1) conventional disc trenching 2500 seedlings/ha (DT2500); (2) low intensity disc trenching 1250 seedlings/ha (LDT1250); (3) low intensity disc trenching 2500 seedlings/ha (LDT2500); (4) low-intensity patch-wise 1250 seedlings/ha (PW1250); and (5) patch-wise 2500 seedlings/ha (PW2500). Site preparation intensity had no effect on seedling growth and, survival or vegetation development; the tested treatments differed in terms of soil disturbance. Planting spot properties and weather conditions influenced the seedling performance. DTW and slope could not substantially explain either seedling growth or survival. The results indicate that the choice of site preparation method should consider flexibility when planting while adapting the level of disturbance accordingly.
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| 48. |
- Nordin, Per, et al.
(författare)
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Within-site adaptation : Growth and mortality of Norway spruce, Scots pine and Silver birch seedlings in different planting positions across a soil moisture gradient
- 2023
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Ingår i: Silva Fennica. - : Finnish Society of Forest Science. - 0037-5330 .- 2242-4075. ; 57:3
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Tidskriftsartikel (refereegranskat)abstract
- Adapting to site conditions is a central part of forest regeneration and can be done through selection of different planting positions. Requirements are tree species specific, and the use of soil moisture maps could be a way to support decision making in forest regeneration planning. At two experimental sites with varying soil moisture conditions in southern Sweden Norway spruce (Picea abies (L.) Karst.), Scots pine (Pinus sylvestris L.), and silver birch (Betula pendula Roth) seedlings were planted in four different planting positions following mounding site preparation; Depression, Hinge, Mound and Unscarified. Soil moisture estimates were obtained from a high-resolution depth-to-water raster for each planting spot. The effect of soil moisture, planting position and their interactions on mortality, height and diameter was evaluated for each tree species. In wet conditions mounds proved to be the best option to minimize seedling mortality for conifers, but with decreasing soil moisture, differences between the planting positions decreased. Birch on the other hand had the greatest survival in the hinge. The coniferous species displayed increased height and diameter when planted in mounds independent of the soil moisture conditions, whereas silver birch was less dependent on a specific planting position. Results from this study shows that a soil moisture map can explain mortality, height and diameter and thus can be a useful tool when choosing planting position in different soil moisture conditions.
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| 49. |
- Nordlander, Göran, et al.
(författare)
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Influence of climate and forest management on damage risk by the pine weevil Hylobius abietis in northern Sweden
- 2017
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Ingår i: Silva Fennica. - : Finnish Society of Forest Science. - 0037-5330 .- 2242-4075. ; 51
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Tidskriftsartikel (refereegranskat)abstract
- The pine weevil Hylobius abietis L. is an economically important pest insect that kills high proportions of conifer seedlings in reforestation areas. It is present in conifer forests all over Europe but weevil abundance and risk for damage varies considerably between areas. This study aimed to obtain a useful model for predicting damage risks by analyzing survey data from 292 regular forest plantations in northern Sweden. A model of pine weevil attack was constructed using various site characteristics, including both climatic factors and factors related to forest management activities. The optimal model was rather imprecise but showed that the risk of pine weevil attack can be predicted approximatively with three principal variables: 1) the proportion of seedlings expected to be planted in mineral soil rather than soil covered with duff and debris, 2) age of clear-cut at the time of planting, and 3) calculated temperature sum at the location. The model was constructed using long-run average temperature sums for epoch 2010, and so effects of climate change can be inferred from the model by adjustment to future epochs. Increased damage risks with a warmer climate are strongly indicated by the model. Effects of a warmer climate on the geographical distribution and abundance of the pine weevil are also discussed. The new tool to better estimate the risk of damage should provide a basis for foresters in their choice of countermeasures against pine weevil damage in northern Europe.
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| 50. |
- Nordlander, Göran, et al.
(författare)
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Regeneration of European boreal forests: Effectiveness of measures against seedling mortality caused by the pine weevil Hylobius abietis
- 2011
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Ingår i: Forest Ecology and Management. - : Elsevier BV. - 0378-1127 .- 1872-7042. ; 262, s. 2354-2363
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Tidskriftsartikel (refereegranskat)abstract
- Successful regeneration of conifer forests by planting is, in large parts of Europe, highly dependent on the effective suppression of damage caused by the pine weevil Hylobius abietis. We investigated the effectiveness of various combinations of control measures against pine weevil damage under boreal forest conditions in Sweden. In particular, we aimed to determine whether satisfactory regeneration could be obtained without the use of insecticides. The experimental study was established on ten new clear-cuts in each of three consecutive years. We studied the use of chemical and physical methods to protect seedlings directly, and investigated the influence of seedling type, age of clear-cut, and a number of soil factors as affected by preparation of the planting site, on the mortality and level of damage suffered by protected and unprotected seedlings. After two seasons, mortality due to pine weevil was 16% among unprotected seedlings, 6% for seedlings treated with the insecticides cypermethrin or imidacloprid, and less than 1% for those physically protected by a coating of Conniflex. However, the Conniflex, which consists of fine-grained sand embedded in a flexible acrylate matrix, was applied manually, and this may have enhanced its effectiveness compared to that achieved during large-scale, commercial application. Two types of containerized Norway spruce seedlings, which differed mainly in their stem diameter (average 2.6 mm and 3.5 mm), were used in the experiments. Among the unprotected seedlings, the narrower stemmed type was more frequently attacked (34% vs. 28%) and killed (19% vs. 12%) by pine weevil. Mortality caused by pine weevil among unprotected seedlings was higher on 1-year-old than on 2-year-old clear-cuts (20% vs. 12%). Soil preparation around unprotected seedlings had a substantial effect on the proportion attacked and killed by pine weevil as well as on the total mortality, with the highest level of feeding damage and mortality occurring on seedlings in undisturbed humus, and the lowest levels occurring on seedlings planted in pure mineral soil (26% vs. 7% for unprotected seedlings). This study demonstrates that acceptable levels of seedling survival can be achieved in regenerations of North European boreal forest without the use of insecticides. Mortality of unprotected seedlings can be reduced to acceptable levels if they are mostly planted in pure mineral soil. Damage can be further reduced by using seedlings with a somewhat larger stem diameter. Insecticides or a physical barrier of Conniflex alone appear to provide a sufficient level of protection. (C) 2011 Elsevier B.V. All rights reserved.
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