| 1. |
- Dahlgren, Anders, et al.
(author)
-
Planning Rescue Services with Non-Stationary Rescue Units
- 2009
-
In: Fire Technology. - : Springer Science and Business Media LLC. - 0015-2684 .- 1572-8099. ; 45:3, s. 239-255
-
Journal article (peer-reviewed)abstract
- Geographical accessibility is fundamental when planning rescue services. At present there are several programs for computing the accessibility of stationary rescue units. This study suggests a method for evaluating geographic accessibility in scenarios containing also non-stationary units. The method supports the planning process by matching the risk of an incident occurring with the rescue units’ capabilities and accessibility. The method is implemented in the computer program Rescue Unit Planner. The result of the analysis is presented in thematic maps and graphs as level of coverage, mean response time and concentration. The method and the computer program have been evaluated in two case studies: one urban area in southern Sweden and one rural area in northern Sweden. The case studies show that that this method can be useful in the rescue service planning process.
|
|
| 2. |
|
|
| 3. |
- Gilbert, M. Thomas P., et al.
(author)
-
Paleo-Eskimo mtDNA genome reveals matrilineal discontinuity in Greenland
- 2008
-
In: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 320:5884, s. 1787-1789
-
Journal article (peer-reviewed)abstract
- The Paleo- Eskimo Saqqaq and Independence I cultures, documented from archaeological remains in Northern Canada and Greenland, represent the earliest human expansion into the New World's northern extremes. However, their origin and genetic relationship to later cultures are unknown. We sequenced a mitochondrial genome from a Paleo- Eskimo human by using 3400- to 4500- year- old frozen hair excavated from an early Greenlandic Saqqaq settlement. The sample is distinct from modern Native Americans and Neo- Eskimos, falling within haplogroup D2a1, a group previously observed among modern Aleuts and Siberian Sireniki Yuit. This result suggests that the earliest migrants into the New World's northern extremes derived from populations in the Bering Sea area and were not directly related to Native Americans or the later Neo- Eskimos that replaced them.
|
|
| 4. |
- Lundin, Anders, et al.
(author)
-
Corticosteroids peroperatively diminishes damage to the C-fibers in microscopic lumbar disc surgery
- 2005
-
In: Spine. - : Ovid Technologies (Wolters Kluwer Health). - 0362-2436 .- 1528-1159. ; 30:21, s. 2362-2368
-
Journal article (peer-reviewed)abstract
- STUDY DESIGN:A subgroup analysis of patient outcomes from a double-blind randomized controlled study comparing corticosteroid versus saline in microscopic lumbar disc surgery.OBJECTIVES:To study if the use of corticosteroids combined with surgery alleviates the damage to the nerve fibers in lumbar disc herniation.SUMMARY OF BACKGROUND DATA:The use of quantitative sensory testing can detect damage to the myelinated A-delta fibers (cold sense) and the unmyelinated C-fibers (warmth sense). Corticosteroids combined with surgery in lumbar disc surgery enhance the outcome after surgery in terms of less pain and more rapid rehabilitation.METHODS:Analyzing quantitative sensory testing before surgery and after 2 weeks and 2 years.RESULTS:In the corticosteroid group, we saw a statistically significant normalization for the warmth disturbance comparing with control group, which not was detected concerning the cold disturbance.CONCLUSIONS:The use of corticosteroids combined with surgery seems to protect some of the damage to the C-fibers in lumbar disc herniation.
|
|
| 5. |
- Ahlgren, Erik, 1962, et al.
(author)
-
Biokombi Rya - slutrapporter från ingående delprojekt
- 2007
-
Reports (other academic/artistic)abstract
- Inom projektet Biokombi Rya har ett flertal olika forskargrupper samarbetat för att studera system¬effekterna av förgasning av biobränsle ur olika aspekter. Syftet med projektet är att öka kunskapen om biobränsleförgasning i Sverige samt att utreda förutsättningar för att sådana anläggningar ska vara ekonomiskt och miljömässigt intressanta. En referensgrupp har varit kopplad till projektet där förutsättningar, resultat och slutsatser har behandlats.I denna underlagsrapport har slutrapporterna från projektets delprojekt samlats. De beskriver förutsättningar, metodansatser, använda data och resultat utförligt och utgör på så sätt ett viktigt komplement till den mer övergripande beskrivningen i projektets syntesrapport. De delrapporter som ingår har valts för att täcka in samtliga delar av projektet som är av allmänt intresse. Projektresultat som publicerats på annat sätt berörs dock mer kortfattat.Projektet Biokombi Rya har pågått under två år (2005-2006) och drivits av Chalmers EnergiCentrum. Förutom de omfattande analysinsatser som författarna till denna rapport står för, har Avdelningen för kemisk teknologi vid KTH, Siemens Industrial Turbines AB och Göteborg Energi AB bidragit med expertstöd. CIT Industriell Energianalys, med undertecknad som projektledare, har stått för projektledning och koordination.Projektet har finansierats av Energimyndigheten, Göteborg Energis forsknings¬stiftelse samt Göteborg Energi AB.
|
|
| 6. |
- Andersson, Tobias, 1973-, et al.
(author)
-
Optimal planning of public safety resources in Sweden
- 2006
-
In: EURO XXI: 21st European Conference on Operational Research,2006.
-
Conference paper (other academic/artistic)abstract
- In this presentation, the similarities and differences between different public safety resources are discussed, concentrating on ambulance services and fire and rescue services. To provide some background for the discussion, two projects focusing on the construction of decision support tools for emergency services decision makers are described; OPAL - Optimized ambulance logistics and OPERA - Optimized and effective rescue resource allocation.
|
|
| 7. |
- André, Malin, 1949-, et al.
(author)
-
The management of infections in children in general practice in Sweden. : a repeated 1-week diagnosis-prescribing study in 5 counties in 2000 and 2002.
- 2005
-
In: The Journal of Infectious Diseases. - : Informa UK Limited. - 0022-1899 .- 0036-5548 .- 1651-1980. ; 37:11-12, s. 863-869
-
Journal article (peer-reviewed)abstract
- A diagnosis-prescribing study was performed in 5 Swedish counties during 1 week in November in 2000 and repeated in 2002. The aim of the present study was to analyse data for children 0-15y of age who consulted a general practitioner with symptoms of an infection. During the 2 weeks studied, 4049 children were consulted. Respiratory tract infections (RTI) were the predominant diagnoses, above all among the youngest children, while the proportion of urinary tract infections and skin infections increased with increasing age. Between the y 2000 and 2002, the proportion of children allocated the diagnosis streptococcal tonsillitis and pneumonia decreased (p<0.01 and p<0.001, respectively) while the proportion of common cold increased (p<0.001). Antibiotic prescribing decreased from 55% to 48% (p<0.001) for respiratory infections between the years studied. The only significant changes in type of antibiotics prescribed were the increase of isoxazolylpenicillins (p<0.001) used for skin infection and the decrease of macrolides (p=0.001). A diagnostic test was used in more than half of the consultations. Of children allocated a RTI diagnosis, 36% were prescribed antibiotics when a C-reactive protein test was performed compared to 58% in those not tested. Further studies are needed in general practice to determine the optimal use of near-patient tests in children with RTI.
|
|
| 8. |
- Arbeus, Mikael, et al.
(author)
-
Milrinone Increases Flow in Coronary Artery Bypass Grafts After Cardiopulmonary Bypass : A Prospective, Randomized, Double-Blind, Placebo-Controlled Study
- 2009
-
In: Journal of Cardiothoracic and Vascular Anesthesia. - : Elsevier BV. - 1053-0770 .- 1532-8422. ; 23:1, s. 48-53
-
Journal article (peer-reviewed)abstract
- Objective: To compare the effects of a bolus of milrinone, 50 mu g/kg, versus placebo on flow in coronary artery bypass grafts after cardiopulmonary bypass (CPB). Design: A prospective, randomized, double-blind study. Setting: A university hospital. Participants: Forty-four patients with stable angina and left ventricular ejection fraction > 30% scheduled for elective coronary artery bypass graft (CABG) surgery were included. Intervention: Patients were randomized to receive 50 mu g/kg of milrinone (n = 22) or placebo (n = 22) after aortic declamping. Measurements and Main Results: The flow in coronary artery bypass grafts was measured with a transit time flow meter at 10 minutes and 30 minutes after termination of CPB. The hemodynamic evaluation included transesophageal echocardiography, mean arterial pressure (MAP), heart rate, and intracavitary measurement of left ventricular end-diastolic pressure (LVEDP). The flow in the saphenous vein grafts was significantly higher in the milrinone group when compared with the placebo group both at 10 and 30 minutes after termination of CPB (p < 0.001). At 10 minutes, the flow was 64.5 +/- 37.4 mL/min (mean +/- standard deviation) and 43.6 +/- 25.7 mL/min in nonsequential vein grafts for milrinone and placebo, respectively. Corresponding values at 30 minutes were 54.8 +/- 29.9 mL/min and 35.3 +/- 22.4 mL/min. The left internal thoracic artery (LITA) flow was higher in the milrinone group but did not reach statistical significance. The fractional area change was higher, and the MAP and calculated pressure gradient (MAP-LVEDP) were lower at 10 minutes in the milrinone group. Conclusion: Milrinone significantly increases the flow in anastomosed saphenous vein grafts after CPB, and has beneficial effects on left ventricular function.
|
|
| 9. |
- Axelsson, Anders, et al.
(author)
-
”Alla vägar bär till Rom” eller ”Får man göra hur man vill”
- 2006
-
In: [Host publication title missing].
-
Conference paper (peer-reviewed)abstract
- Projektet hade som mål att introducera ett simuleringsprogram redan i andra årskursen. Initiativet kom ursprungligen från utbildningsnämnden för Bioteknik och Kemiteknik, som startade ett antal beräkningsteknikprojekt för att stärka teknologerna färdigheter i beräkningsteknik. Projektet genomfördes av 11 frivilliga (av 108) ”testpiloter” i kursen Transportprocesser. Vi ersatte ett av de tre beräkningsprojekten, som normalt ingår i kursen, med ett Femlab-projekt (numera Comsol Multiphysics). Med detta kan man simulera tämligen avancerade strömningsförlopp. Projektet var mycket lyckosamt. De som gjorde detta projekt uppnådde samma insikt i strömningslära som övriga men på ett helt annat sätt – och dessutom genom att jobba helt på egen hand. Resultatet visar också att användningen av ”learning outcomes” eller ”läranderesultat”, som ett sätt att formulera kursmål, faktiskt kan innebära att vi kan se fler möjligheter att genomföra kurser på.
|
|
| 10. |
- Axelsson, Anders, et al.
(author)
-
The use of holographic interferometry and electron speckle pattern interferometry for diffusion measurement in biochemical and pharmaceutical engineering applications
- 2008
-
In: Optics and Lasers in Engineering. - : Elsevier BV. - 0143-8166. ; 46:12, s. 865-876
-
Journal article (peer-reviewed)abstract
- In this review holographic interferometry and electron speckle pattern interferometry are discussed as efficient techniques for diffusion measurements in biochemical and pharmaceutical applications. Transport phenomena can be studied, quantitatively and qualitatively, in gels, liquids and membranes. Detailed information on these phenomena is required to design effective chromatography bioseparation processes using gel beads or ultrafiltration membranes, and in the design of control led-release pharmaceuticals using membrane-coated pellets or tablets. The influence of gel concentration, ion strength in the liquid and the size of diffusing protein molecules can easily be studied with good accuracy. When studying membranes, the resistance can be quantified, and it is also possible to discriminate between permeable and semi-permeable membranes. In this review the influence of temperature, natural convection and light deflection on the accuracy of the diffusion measurements is also discussed. (c) 2008 Elsevier Ltd. All rights reserved.
|
|
