In agriculture, as in industry, have many physically demanding jobs disappeared and the physical stress factors have changed. However, the working days in farms are often long, and it is difficult to hire workers for help as the work conditions are considered to be harsh. The thermal work environment in farms is one of the factors influencing the work conditions. This study aimed to find out the p

Timber-glass composite I-beams were manufactured and tested in bending to failure. The glass web of the I-beam was adhesively bonded to the timber flanges using three different adhesives: Epoxy, Acrylate and Silicone. For the webs two types of 8 mm thick glass were used: annealed float and heat heat-strengthened glass. Before testing the beams with heat-strengthened glass, the residual-stress prof

This thesis presents spin transport studies of ferromagnetic nano-scaled tunneling devices fabricated by atomic force microscopy (AFM) and electron beam lithography (EBL). The thesis covers three main topics: The first topic is a study of spin accumulation (relaxation) in Au nano-structures using Ni/Au/Ni ferromagnetic single electron transistors (F-SETs). A Ni/Au/Ni F-SET with a single central Au

Sångens position och funktion i moderna civilsamhällen är annorlunda än i förmodern tid. Detta gäller åtminstone för aspekter som vem det är som sjunger varför, när och i vilket syfte? Här spelar samhällskulturella avvägningar en väsentlig roll som exempelvis av det individuella mot det kollektiva, det estetiska mot det sociala, det sakrala mot det sekulära och det instrumentala mot det vokala. Hu

Popular Abstract in Swedish Telomerer är en specialiserad DNA-protein struktur som finns i slutet av den linjära kromosomen. Trots att den telomera regionen inte innehåller några gener anses den vara oumbärlig för kromosomernas överlevnad. Telomererna skyddar kromosomerna från nedbrytning orsakad av enzymatiska attacker. Kromosomer utan telomerer har dessutom visats vara ytterst reaktiva och fuserThe telomeres, the physical ends of the chromosomes, consist in various species of short simple tandem repeats which are extended by telomerase. The Drosophila melanogaster telomeres, which instead are elongated by retroposons, are an exception. In Chironomus pallidivittatus and Chironomus tentans the telomeres contain 340/350-bp tandem repeats in blocks up to 200 kb in size. The structure of the

Popular Abstract in Swedish Vårtor (skivepitelpapillom) i hud eller slemhinna orsakas av papillomvirus. Kunskapen om detta virus var länge ganska liten eftersom det inte går att odla i cellkulturer, men med molekylärbiologins framsteg har förståelsen ökats. Varje djurart har sina egna papillomvirus och genom att jämföra nukleinsyrasekvenserna i DNA-kedjan hos olika virusisolat har man identifieratThe occurrence of genital human papillomavirus infection was determined in different categories of patients by means of PCR. In high proportion of young women attending an adolescent clinic, the presence of HPV DNA was demonstrated in simultaneously urethral and cervical samples, suggesting that genital HPV infections are often multifocal. Multiple HPV types were demonstrated in about half of the

This paper presents a generic system dynamic model to simulate and analyze a desertification system and its stability for different desertification syndromes. The study is one of many desertification related modelling approaches carried out by different project partners within the frames of DeSurvey (A Surveillance System for Assessing, Monitoring and Modelling Desertification; 2005-2010). DeSur

Religion can heal, but it can hurt as well. This collection of essays addresses some key issues of religious stereotyping, prejudice, and discrimination, and considers a wide range of important topics which haunt our societies today. When stereotyping becomes the oxygen we inhale, when it is so important to us that we cannot see how we can survive without it - what can and should we do? Twenty-two

One of the most important goals on solar collector development is to increase the system’s annual performance without increasing overproduction. The studied collector is formed by a compound parabolic reflector which decreases the collector optical efficiency during the summer period. Hence, it is possible to increase the collector area and thus, the annual solar fraction, without increasing the o