| 1. |
- Patel, Kush P., et al.
(author)
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Health Care Resource, Economic, and Readmission Implications After Acute Decompensated Aortic Stenosis–A Nationwide Study
- 2023
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In: American Journal of Cardiology. - 0002-9149. ; 204, s. 200-206
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Journal article (peer-reviewed)abstract
- Acute decompensated aortic stenosis (ADAS) is common. The cumulative burden of ADAS from a clinical, health care resource, and financial perspective is unknown. This study sought to assess the national impact of ADAS compared with electively treated, stable patients with aortic stenosis (non-ADAS). Using the National Readmissions Database between 2016 and 2019, patients with ADAS and non-ADAS were identified using International Classification of Diseases, Tenth Revision codes. Patients with ADAS were propensity-matched to non-ADAS patients (1:2) using age, gender, and Charlson co-morbidity index. We compared in-hospital mortality, length of stay (LOS), health care–associated costs, and 90-day readmission data between the 2 cohorts. A total of 51,498 propensity-matched patients were included in this study: median age 75 years, 64% men. The in-hospital mortality for ADAS was higher than non-ADAS (2.8% vs 1.5%, p <0.0001). The LOS during the index admission was longer for ADAS (9 [5 to 13] vs 4 [2 to 6] days, p <0.0001). The health care–associated costs per patient was greater for ADAS ($55,450.0 [41,860.4 to 74,500.7] vs $43,405.7 [34,218.5 to 56,034.8], p <0.0001). Readmission to hospital within 90 days was more frequent in ADAS (21.1 vs 16.8%, p <0.001). The in-hospital mortality during readmission was higher with ADAS (3.9% vs 2.8%, p = 0.004). The readmission LOS was longer with ADAS (4 [2 to 7] vs 3 [2 to 6] days, p <0.0001). In conclusion, ADAS imposes a significant burden clinically and financially and on health care resources compared with non-ADAS during the index admission and 90-day follow-up. There is an urgent need to predict ADAS and optimize the timing of aortic valve replacement to reduce the incidence and the burden associated with ADAS.
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| 2. |
- Barnes, Christopher J., et al.
(author)
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Detrital zircon U-Pb geochronology of a metasomatic calc-silicate in the Tsäkkok Lens, Scandinavian Caledonides
- 2021
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In: GEOLOGY GEOPHYSICS AND ENVIRONMENT. - : AGHU University of Science and Technology Press. - 2299-8004 .- 2353-0790. ; 47:1, s. 21-31
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Journal article (peer-reviewed)abstract
- The Tsakkok Lens of the Seve Nappe Complex in the Scandinavian Caledonides comprises eclogiie bodies hosted within metasedimentary rocks. These rocks are thought to be derived from the outermost margin of Baltica along the periphery of the Iapetus Ocean, but detrital records from the sedimentary rocks are lacking. Many metasedimentary outcrops within the lens expose both well-foliated metapelitic rocks and massive talc-silicates. The contacts between these two lithologies are irregular and are observed to trend at all angles to the high-pressure foliation in the metapelites. Where folding is present in the metapelites, the talc-silicate rocks are also locally folded. These relationships suggest metasomatism of the metapelites during the Caledonian orogenesis. Zircon U-Pb geochronology was conducted on sixty-one zircon grains from a talc-silicate sample to investigate if they recorded the metasomatic event and to assess the detrital zircon populations. Zircon grains predominantly show oscillatory zoning, sometimes with thin, homogeneous rims that have embayed contacts with the oscillatory-zoned cores. The zircon cores yielded prominent early Stenian, Calymmian, and Statherian populations with a subordinate number of Tonian grains. The zircon rims exhibit dissolution-reprecipitation of the cores or new growth and provide ages that span similar time frames, indicating overprinting of successive tectonic events. Altogether, the zircon record of the talc-silicate suggests that the Tsakkok Lens may be correlated to Neoproterozoic basins that are preserved in allochthonous positions within the northern extents of the Caledonian Orogen.
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| 3. |
- Snickars, Pelle
(author)
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Televisionen som arkiv : om webb-tv
- 2008
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In: Svensk television. - Stockholm : Statens ljud- och bildarkiv. - 9789188468055
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Book chapter (other academic/artistic)
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| 4. |
- Osbeck, Christina
(author)
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Gemenskaper har sina gränser
- 2005
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In: och likväl rör det sig. Genusrelationer i förändring.
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Book chapter (other academic/artistic)
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| 5. |
- Mauritzson-Sandberg, Eva, et al.
(author)
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Effekter av samverkan mellan rehabiliteringsaktörer utifrån ett individperspektiv : en retrospektiv studie av deltagarna i de regionala pilotprojekten Fas, Arbetsgivarringen i Boden och Samanda i Haparanda
- 2004
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Reports (other academic/artistic)abstract
- Olika samverkansprojekt har bildats i landet för att bromsa utvecklingen av den höga frekvensen av förtidspensionering och sjuktal i samhället. Intentionen är att förbättra möjligheten för människor att rehabiliteras tillbaka till arbetslivet. Denna undersökning återger resultat av tre inrättade samverkansprojekt, FAS, Arbetsgivarringen och Samanda. 35 personer ur dessa tre samverkansprojekt har ingått i denna studie. Samverkan har uppkommit på initiativ av försäkringskassan med syftet att samordnade resurser mellan samhällsaktörer och arbetsgivare är att förbättra individens möjlighet att återgå till arbete efter avslutad rehabilitering. Deltagarna i denna studie är positiva till samverkansprojektet och upplever att aktörerna i samverkansprojektet har haft ett uppriktigt uppsåt att förändra deltagarnas situation och tagit deras problematik på allvar. Trots uppriktiga ansträngningar har projektet inte förmått att hjälpa samtliga deltagarna till att på något genomgripande sätt ändra kursriktning. Däremot finns det indikationer på att det finns klara fördelar med att samordna resurser. Resultaten i denna undersökning antyder att yrkesbefattning och utbildning har haft betydelse för återgång till arbetet, men flertalet deltagare pekat även på att samverkansprojektet skapat en högre motivation hos dem själva att göra någonting åt den egna situationen. Vid en jämförelse mellan de tre samverkansprojekten framgick det att deltagarna i Arbetsgivarringen hade bästa utfall men samtidigt också störst frekvens av pensionering. Deltagarna i projektet FAS hade lägst utfall av förvärvsarbetande och sämst kontakt med arbetsgivaren. Deltagarna i Samanda hade flest fall av ersättning baserad på åtgärder och lägst frekvens av fast anställning. Deltagarna i Samanda hade dessutom en mer komplex problematik d.v.s. i högre utsträckning psykiska problem och längre tids arbetslöshet. De var också minst nöjda med projektet. Denna studie visar även att individens försörjningssituation är i stort sett oförändrad. Deltagarnas försörjning består till största delen av ersättning via socialförsäkringen. Intervjuer med ansvariga inom samverkansprojekten ger en något mer nyanserad bild av projekten. Överlag är man positiva till projekten och dess intention men man upplever även brister i projekten t.ex. att dessa i många fall bärs upp enskilda entusiastiska personer istället för att vara ordentligt organisatoriskt förankrade. Det mest positiva med projekten är att samordningen av aktörerna ger utrymme för att på ett mer kvalitativt sätt ta hand om klienterna medan det mest negativa är att projekten tar slut så existerar ingen uppföljning och feedback kring de klienter som deltog i projekten. Slutsatsen av denna studie är att för att lyckas bromsa det höga ohälsotalet i samhället krävs det att resurser sätts in i tid. Andra insikter rör omfattningen av personliga kontakter och kontaktnät, då de är av stor betydelse för att lyckas och bör finnas som ett naturligt inslag i projektverksamheten. Andra viktiga insikter rör förmågan att omsätta teoretiska kunskaper i praktiken. Av den anledningen förutsätter det förutom goda personliga kontakter en klart utarbetad strategi och gemensamt uttalat syfte hos samtliga aktörer för att få deltagarna tillbaka till arbetslivet.
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| 6. |
- Monzó, Patricia, et al.
(author)
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A novel numerical model for the thermal response of borehole heat exchangers fields
- 2014
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Conference paper (peer-reviewed)abstract
- The design of a borehole field should be based on a long-term simulation of its thermal response for specified energy loads. This response can be calculated from a pre-calculated dimensionless function, the g-function. This paper is focused on a new approach to the calculation of g-functions; in particular with a precise representation of the boundary conditions at the borehole wall. First, the almost constant temperature along the borehole heat exchanger requires a boundary condition of essentially isothermal boreholes along the depth. In a common case the borehole heat exchangers are connected in parallel, thus all boreholes should have the same temperature. Also, the total heat flow to the borehole field should be constant over time. A numerical model in which the boreholes are filled with a highly conductive material has been built, reproducing the isothermal condition. By thermally interconnecting the boreholes, the equal temperature condition is satisfied. The g-functions of some simple borehole field configurations are presented in this paper. The results show, in general, a good agreement with the existing solutions for a similar boundary condition.
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| 7. |
- Monzó, Patrcia, et al.
(author)
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A study of the thermal response of a borehole field in winter and summer
- 2013
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Conference paper (peer-reviewed)abstract
- A Ground Source Heat Pump system is a well-known technology used to provide space heating and cooling in residential and commercial buildings. For large energy demands, a number of boreholes, which can vary between tens and hundreds, may be required. The boreholes can be arranged in linear, square, rectangular, or any other configuration not necessarily symmetric. The heat exchangers in the boreholes are typically connected in parallel. Recently, the idea of a more flexible configuration of multiple Borehole Heat Exchangers (BHEs) has been introduced in commercial applications, enabling the system to operate in a more versatile manner, dividing the ground into different thermal zones. In this new arrangement, the BHEs are connected into thermal sub-groups allowing them to operate separately as sub-systems, depending on the building energy needs and the seasonal periods. In this project, the temperature response of a multiple BHE configuration is obtained from simulations in a numerical model using FEM software, Comsol Multiphysics© under different operational conditions. First, the loads are imposed under the usual conditions so that all boreholes are operated to provide heating in winter and cooling in summer. The results of this study show that our numerical model presents a good agreement with the ones generated from EED when the system is balanced. Moreover, some hypothetical scenarios with respect to the BHEs arrangement and the operational mode are performed thanks to the flexibility of our numerical model. The hypothetical scenarios provide a first approach about the thermal behavior of the boreholes and their interactions within the field with respect to its wall temperature, previous operation and thermal storage. Further work will be devoted to study more realistic scenarios.
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| 8. |
- Birk, Wolfgang, et al.
(author)
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Project: iRoad
- 2011
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Other publication (pop. science, debate, etc.)
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| 9. |
- Dowling, Jim, et al.
(author)
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Developing a Distributed Electronic Health-Record Store for India
- 2008
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In: ERCIM News. - 0926-4981 .- 1564-0094. ; :75, s. 56-57
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Research review (pop. science, debate, etc.)abstract
- The DIGHT project is addressing the problem of building a scalable and highly available information store for the Electronic Health Records (EHRs) of the over one billion citizens of India. There has been much recent interest in information services that offer to manage an individual's healthcare records in electronic form, with systems such as Microsoft HealthVault and Google Health receiving widespread media attention. These systems are, however, proprietary and fears have been expressed over how the information stored in them will be used. In relation to these developments, countries with nationalized healthcare systems are also investigating the construction of healthcare information systems that store Electronic Health Records (EHRs) for their citizens.
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| 10. |
- Kuijper, Dries P. J., et al.
(author)
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Bottom-up and top-down forces shaping wooded ecosystems : lessons from a cross-biome comparison
- 2015
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In: Trophic ecology. - Cambridge : Cambridge University Press. - 9781139924856 - 9781107434325 ; , s. 107-133
-
Book chapter (peer-reviewed)abstract
- Introduction: Different climatic regions across the globe are associated with biomes that differ in their cover of woody plants, such as grasslands, savannas, and forests (Whitaker, 1962). For a long time, researchers have assumed that abiotic factors control the spatial distribution of woody plant-dominated ecosystems or biomes. According to this idea, rainfall and temperature determine the transitions from deserts to grasslands to savannas and eventually to forests (e.g., Prentice et al., 1992). However, we increasingly realize that biomes may be far less fixed entities than previously assumed. An alternative view for many regions might be that of “ecosystems uncertain,” which Whittaker (1975) defined as zones “in which either grassland or one of the types dominated by woody plants” may occur under the same climatic conditions. As Bond (2005) discusses, many of these “ecosystems uncertain” may be seen as “consumer-controlled ecosystems” where plant consumers, such as herbivores and fire, prevent a closed forest from developing and are a major determinant of the ecosystem state. Bond (2005) showed that such “ecosystems uncertain” may in fact cover a very large part of the world (Fig. 5.1). More recently, several global analyses confirmed that across a large part of the global land surface, tree cover is indeed bimodal (Staver et al., 2011) or even trimodal (Scheffer et al., 2012). This means that under the same climatic conditions, a system may be in a treeless, savanna, or forest state; this pattern has been described for (sub)tropical (Hirota et al., 2011; Staver et al., 2011), as well as boreal (Scheffer et al., 2012), parts of the world. From this, we can conclude that, rather than being purely controlled from the bottom up, ecosystems, and even biomes, are shaped by interacting bottom-up and top-down factors (Polis and Strong, 1996). There is general agreement that both bottom-up and top-down factors affect plant communities (Polis and Strong, 1996), but the question remains what the relative strengths of such top-down and bottom-up processes are and whether we can find general spatial and temporal patterns in their effects (Gripenberg and Roslin, 2007).
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