| 1. |
- Allard, Christina, et al.
(författare)
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Rasbiologiskt språkbruk i statens rättsprocess mot sameby : DN Debatt 2015-06-11
- 2015
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Annan publikation (populärvet., debatt m.m.)abstract
- Statens hantering av forskningsresultat i rättsprocessen med Girjas sameby utgör ett hot mot Sverige som rättsstat och kunskapsnation. Åratal av svensk och internationell forskning underkänns och man använder ett språkbruk som skulle kunna vara hämtat från rasbiologins tid. Nu måste staten ta sitt ansvar och börja agera som en demokratisk rättsstat, skriver 59 forskare.
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| 2. |
- Engström, Gunnar, et al.
(författare)
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Pulmonary function and atherosclerosis in the general population : causal associations and clinical implications
- 2024
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Ingår i: European Journal of Epidemiology. - : Springer Nature. - 0393-2990 .- 1573-7284. ; 39:1, s. 35-49
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Tidskriftsartikel (refereegranskat)abstract
- Reduced lung function is associated with cardiovascular mortality, but the relationships with atherosclerosis are unclear. The population-based Swedish CArdioPulmonary BioImage study measured lung function, emphysema, coronary CT angiography, coronary calcium, carotid plaques and ankle-brachial index in 29,593 men and women aged 50–64 years. The results were confirmed using 2-sample Mendelian randomization. Lower lung function and emphysema were associated with more atherosclerosis, but these relationships were attenuated after adjustment for cardiovascular risk factors. Lung function was not associated with coronary atherosclerosis in 14,524 never-smokers. No potentially causal effect of lung function on atherosclerosis, or vice versa, was found in the 2-sample Mendelian randomization analysis. Here we show that reduced lung function and atherosclerosis are correlated in the population, but probably not causally related. Assessing lung function in addition to conventional cardiovascular risk factors to gauge risk of subclinical atherosclerosis is probably not meaningful, but low lung function found by chance should alert for atherosclerosis.
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| 3. |
- Ameen, Arman, et al.
(författare)
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Experimental investigation of ventilation performance of different air distribution systems in an office environment – cooling mode
- 2019
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Ingår i: Energies. - : MDPI. - 1996-1073. ; 12:7
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Tidskriftsartikel (refereegranskat)abstract
- The performance of a newly designed corner impinging jet air distribution method with an equilateral triangle cross section was evaluated experimentally and compared to that of two more traditional methods (mixing and displacement ventilation). At nine evenly chosen positions with four standard vertical points, air velocity, turbulence intensity, temperature, and tracer gas decay measurements were conducted for all systems. The results show that the new method behaves as a displacement ventilation system, with high air change effectiveness and stratified flow pattern and temperature field. Both local air change effectiveness and air exchange effectiveness of the corner impinging jet showed high quality and promising results, which is a good indicator of ventilation effectiveness. The results also indicate that there is a possibility to slightly lower the airflow rates for the new air distribution system, while still meeting the requirements for thermal comfort and indoor air quality, thereby reducing fan energy usage. The draught rate was also lower for corner impinging jet compared to the other tested air distribution methods. The findings of this research show that the corner impinging jet method can be used for office ventilation.
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| 4. |
- Andersson, Patrik, 1974, et al.
(författare)
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Framtidsbilder för samhällsbyggnad
- 2006
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Framtidsbilder för samhällsbyggnad 2020De kommande 15 åren står institutionen för Bygg- och miljöteknik inför stora förändringar. Därför har institutionen initierat projektet Framtidsbilder 2020 där man engagerat en framtidspanel bestående av elva yngre disputerade forskare. Arbetet inleddes med ett breddgruppsmöte där 110 personer representerande institutionens personal och studenter deltog. Vid mötet identifierades ett antal trender och osäkra utvecklingar som påverkar framtiden inom samhällsbyggnadsområdet. Deltagarna bidrog också med idéer till en önskvärd utveckling, vilket har sammanställts och utgör grunden till en gemensam önskvärd framtid/vision för institutionen. Materialet från breddgruppsmötet har bearbetats av Framtidspanelen och resulterat i fyra scenarier som beskriver hur samhällsbyggnadsområdet kan se ut år 2020. Syftet med framtidsbilderna är att de ska vara vägledande för institutionens beslut och förhållningssätt under de kommande åren.Fyra scenarierTurning TorsoSamhället präglas av en ekonomi som är på uppgång, och av ett nytänkande och öppet samhälle. Materiell status och individualism är viktigt. Detta leder till en hög arbetsbelastning samt krav på exklusiva varor av hög kvali-tet. Det finns en stor medvetenhet om miljöpåverkan och klimatförändringar och lösningarna för att klara energiförsörjningen är innovativa.Eco-metropolenDet sveper en grön våg genom dagens samhälle. Under de senaste 15 åren har vi insett att jorden skall vara en bebolig plats även åt dem som kommer efter oss. Vi söker ständigt efter nya, mer förfinade metoder att tillvarata de resurser vi har. Samhället och individen är i balans. Ekonomin är god och vi är miljömedvetna, trygga och integrerade. Nytänkande premieras och icke- materialistiska värderingar står högt i kurs. Vi tänker individuellt, men agerar mer än gärna för kollektivets bästa. Utbildning är gratis TrädgårdsstadenEtt samhälle där vi lärt oss hantera stress, men känner oss otrygga och helst umgås i slutna sociala sammanhang. Vi bor enkelt inne i stan, eller gärna på landsbygden nära storstäderna. Minskade behov av högutbildade i samhället gör att vi har svårt att rekrytera studenter till teknikutbildningar. Det traditionella tankesättet leder till kulturkrockar med företag och personer från andra länder.Gated communitiesFörsämrad ekonomi och ökad egoism har lett fram till ett stressat, otryggt och segregerat samhälle. Accelererande klimatförändringar och ökad miljö-påverkan skrämmer oss, men trots det åtgärdar vi inte problemen, utan koncentrerar oss på konsekvenserna. Arbetslöshet i samhällsbyggnadssek-torn leder till sänkt status för samhällsbyggaren. Vi har därför svårt att rekrytera studenter, och även forskningen har låg status.
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| 5. |
- Arghand, Taha, et al.
(författare)
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An experimental investigation of the flow and comfort parameters for under-floor, confluent jets and mixing ventilation systems in an open-plan office
- 2015
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Ingår i: Building and Environment. - : Elsevier BV. - 0360-1323 .- 1873-684X. ; 92, s. 48-60
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Tidskriftsartikel (refereegranskat)abstract
- There is a new trend to convert the workplaces from individual office rooms to open offices for motivating money saving and better communication. With such a shift the ability of existing ventilation systems in meeting the new requirements is a challenging question for researchers. The available options could have an impact on workers' health in terms of providing acceptable levels of thermalcomfort and indoor air quality. Thus, this experimental investigation focuses on the performances of three different air distribution systems in an open-plan office space. The investigated systems were: mixing ventilation with ceiling-mounted inlets, confluent jets ventilation and underfloor air distribution with straight and curved vanes. Although this represents a small part of our more extensiveexperimental investigation, the results show that all the purposed stratified ventilation systems (CJV and UFAD) were more or less behaving as mixing systems with some tendency for displacement effects. Nevertheless, it is known that the mixing systems have a stable flow pattern but has the disadvantage of mixing contaminated air with the fresh supplied air which may produce lower performance and in worst cases occupants' illness. For the open-plan office we studied here, it will be shown that the new systems are capable of performing better than the conventional mixing systems. As expected, the higher air exchange efficiency in combination with lower local mean age of air for corner-mounted CJV and floor-mounted UFAD grills systems indicates that these systems are suitable for open-plan offices and are to be favored over conventional mixing systems.
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| 6. |
- Blomquist, Caroline, 1966-, et al.
(författare)
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Long-term effects of a Paleolithic diet on plasma fatty acid composition in postmenopausal women with obesity : a randomized trial
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Background: A Paleolithic-type diet (PD) can improve cardiometabolic risk factors, but its impact on plasma fatty acid (FA) composition is unknown. We hypothesized that a PD improves dietary fat quality and FA metabolism, which may help counteract obesity-related metabolic dysfunction. Objective: The current study investigated the impact of a PD on biomarkers of dietary fat quality and indices of FA desaturation and de novo lipogenesis compared with a prudent control diet (CD).Design: This randomized 2-year trial included 70 women (mean ± SD age 60 ± 5.6 years, BMI 33 ± 3.4). The PD was rich in fish and vegetable fats but devoid of dairy products and lower in carbohydrates than the CD advised to follow the Nordic Nutrition recommendations. FA composition of plasma cholesterol esters (CE) was assessed using gas chromatography, desaturase activities estimated by product-to-precursor FA ratios, and dietary intake measured by 4-day food records at baseline and after 6 and 24 months.Results: Saturated fat (P=0.009) and carbohydrate (P<0.001) intake was lower, whereas polyunsaturated (PUFA), monounsaturated FA, and protein intake were higher at 24 after PD versus CD (all P<0.001). Changes in plasma FA composition during PD compared to CD suggested that saturated FAs from dairy foods were partly replaced with PUFAs from fish and vegetable sources. Although comparable BMI, energy intake, and physical activity were found at 24 months with both diets, metabolic markers and desaturase activity indices, including 16:0 (P=0.005), 16:1n-7 (P=0.002), 20:3n-6 (P=0.004), stearoyl-CoA desaturase 1 (SCD-1) (P=0.006), lipogenic index (P<0.001), and the triglyceride/high-density lipoprotein cholesterol ratio (P=0.031), were lower after 24 months of PD versus CD.Conclusions: The PD had long-term effects on dietary fat quality intake and plasma FA composition, changes previously linked to improved cardiometabolic health. The results may suggest an anti-lipogenic effect of PD, possibly contributing to improved dyslipidemia.
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| 7. |
- Cehlin, Mathias, 1974-, et al.
(författare)
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Numerical investigation of Air Change Effectiveness in an Office Room with Impinging Jet Ventilation
- 2018
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Ingår i: Proceedings of the 4<sup>th</sup> international Conference on Building Energy & Environment. - Melbourne : Conference On Building Energy & Environment - COBEE2018, Melbourne Australia. - 9780646982137 ; , s. 641-646
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Konferensbidrag (refereegranskat)abstract
- Providing occupant comfort and health with minimum use of energy is the ultimate purpose of heating, ventilating and air conditioning systems. This paper presents the air-change effectiveness (ACE) within a typical office room using impinging jet ventilation (IJV ) in combination with chilled ceiling (CC) under different heat loads ranging from 6.5 - 51 W per square meter floor area. In this study, a validated CFD model based on the v2f turbulence model is used for the prediction of air flow pattern and ACE. The interaction effect of chilled ceiling and heat sources results in a complex flow with air circulation. The thermal plumes and air circulation in the room result in a variation of ACE within the room but also close to the occupant. For all studied cases, ACE is above 1.2 close to the occupants, indicating that IJV is more energy efficient than mixing ventilation.
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| 8. |
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| 9. |
- Hugoson, Mats-Åke, et al.
(författare)
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Interaction between Heterogeneous Autonomous Systems : Principles and Practice
- 2010
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Ingår i: Business Information Systems Workshops. BIS 2010 International Workshops, Berlin, Germany, May 3-5, 2010. Revised Papers. - Berlin, Heidelberg : Springer Berlin Heidelberg. ; , s. 119-130
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Konferensbidrag (refereegranskat)abstract
- Today, many enterprises use information systems to support their activities but as a rule these systems are heterogeneous and incompatible. When enterprises need to cooperate with each other, they have to overcome this heterogeneity and establish interaction between their information systems. Based on a case study from international business development, this paper analyzes principles and conditions for creating interaction between autonomous systems. Furthermore, an approach to interaction between heterogeneous information systems in the case study is presented, which is based on a service-oriented architecture and Web services. In this context, a business process model describes how the distributed autonomous systems should be used by companies in different countries to support establishment of business relationships. These systems have different data models, and use different industrial classifications. Our main contribution to research in the field of interaction between autonomous systems are (1) a proposal for principles to be taken into account when federating autonomous systems and (2) an experience report when putting these principles into practice in the case study presented.
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| 10. |
- Karimipanah, Taghi, 1953-, et al.
(författare)
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Investigation of flow pattern for a confluent-jets system on a workbench of an industrial space
- 2014
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Ingår i: Indoor Air 2014. ; , s. 192-199
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Konferensbidrag (refereegranskat)abstract
- A new air supply terminal based on confluent jets was installed on a workbench, in vicinity of a CNC machine, of an industrial space. The flow pattern and temperature field was carried out by CFD calculations and infrared camera imaging technique. A main goal of this technique is to save energy therefore the jet should distribute the air where it is desired. This is possible because the confluent jets system uses the benefits of both mixing (high momentum for better spreading of the air jet) and displacement (cleaner air in occupied zone). The results show that thermal comfort and air quality analysis relies on consistent facts and is in good agreements with the existed standards. It was shown that the supply terminal is able to spread the fresh air to the needed work area. This is an advantage of the high momentum air distribution system used in this investigation.
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