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A directional crack growth criterion in a compressed elastic perfectly plastic material is considered. The conditions at the crack-tip are evaluated for a straight stationary crack with a small incipient kink. Remote load is a combined hydrostatic pressure and pure shear applied via a boundary layer. Crack surfaces in contact are assumed to develop homogenous Coulomb friction.The crack opening dis
This paper examines how violent conflict affects the supply of education in one of the world’s poorest countries, Burkina Faso. We combine unique nationwide census data on all primary schools with geocoded records of Islamist violence to assess how local conflict exposure shapes school availability, staffing, and the mix of education provision. Using a staggered difference-in-differences design an
BACKGROUND: The characteristic feature of Goodpasture disease is the occurrence of an autoantibody response to the noncollagenous domain of the alpha3 chain of type IV collagen [alpha3(IV)NC1] in the alveolar and glomerular basement membrane. These antibodies are associated with the development of a rapidly progressive glomerulonephritis, with or without lung hemorrhage, whereas autoantibodies spe
The stable fly, Stomoxys calcitrans (Diptera: Muscidae), is a worldwide pest of livestock. Recent outbreaks of stable flies in sugarcane fields in Brazil have become a serious problem for livestock producers. Larvae and pupae found inside sugarcane stems after harvesting may indicate that stable flies use these stems as potential oviposition or larval development sites. Field observations suggest
The main objective for this article is to explore how users of psychoactive drugs experience time and the role psychoactive drugs play in the management and construction of time. The data in this study consists of different kinds of written documents such as anecdotal accounts and scientific articles and reports which was collected using a purposeful sampling technique. One important result is tha
In addition to the family context, persons in the neighborhood and community are important for individual life course, socioeconomic and demographic outcomes such as education, career and family transitions. This paper aims to study how neighborhood conditions in childhood influence fertility outcomes in adulthood. Theories focusing on motivation, aspirations and attitudes or peer influence generaIn addition to the family context, persons in the neighborhood and community are important for individual life course, socioeconomic and demographic outcomes such as education, career and family transitions. This paper aims to study how neighborhood conditions in childhood influence fertility outcomes in adulthood. Theories focusing on motivation, aspirations and attitudes or peer influence genera
I denna studie undersöks grundvattnet i en vattentäkt (Nam Du) i Hanoi, Vietnam. Grundvattnet innehåller höga halter av ammonium (NH₄⁺) och arsenik (As). Arsenik är mycket giftigt och kan ha allvarlig inverkan på människors hälsa och är därför inte önskvärt i dricksvatten. Höga halter av ammonium i dricksvatten är inte skadligt i sig, men är ofta ett tecken på antropogen påverkan av grundvattnet, In this study high concentrations of ammonium (NH₄⁺) and arsenic (As) in groundwater are investigated in the Nam Du well-field, Hanoi, Vietnam. Arsenic is unwanted in drinking water since it has severe consequences for human health. High concentrations of ammonium in groundwater, while not directly harmful to human health, is often a sign of the groundwater being affected by anthropogenic activiti
This paper examines whether and how Islamist violence affects educational content in secondary schools in Burkina Faso. We combine geocoded conflict-event data with nationwide school census data containing detailed information on teachers’ subject-specific teaching hours and mobility across schools. Using a staggered difference-in-differences design, we estimate the dynamic effects of violence on
Despite various ongoing international initiatives, the intensity and frequency of weather-related natural hazards is expected to continue to increase globally. Increasing our understanding of how to mitigate the consequences of such natural hazards through better detection, planning and preparedness, has constituted the overarching objective of this thesis. The thesis is based on three papers: Pap
Mutations within the DNA mismatch repair gene, "postmeiotic segregation increased 2" (PMS2), have been associated with a predisposition to hereditary nonpolyposis colorectal cancer (HNPCC; Lynch syndrome). The presence of a large family of highly homologous PMS2 pseudogenes has made previous attempts to sequence PMS2 very difficult. Here, we describe a novel method that utilizes long-range PCR as
