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This note is about promoting singularity subtraction as a helpful tool in the discretization of singular integral operators on curved surfaces. Singular and nearly singular kernels are expanded in series whose terms are integrated on parametrically rectangular regions using high-order product integration, thereby reducing the need for spatial adaptivity and precomputed weights. A simple scheme is
Popular Abstract in Swedish Denna doktorsavhandling är en delstudie i ett större projekt som syftar till att utveckla Artificiell fotosyntes för att framställa ett värdefullt bränsle, vätgas, från solenergi och vatten. Vår typ av Artificiell Fotosyntes syftar till att framställa syntetiska “superämnen” som kan härma nyckelsteg i den naturliga fotosyntesen. Våra artificiella ”superämnen” skall kunnIn natural photosynthesis, solar energy is converted to chemical energy by photosynthetic reaction centers. In green plants and algae, Photosystem II (PSII) and Photosystem I (PSI) absorb light and utilize the charge separation reactions to convert solar energy to chemical energy. The energy is later stored in form of energy- rich substances formed in reductive biosynthetic reactions. The electron
The purpose of this licentiate thesis is to investigate the following hypothesis in a case study: "Occupants of buildings with a quality labeled indoor environment experience a better indoor environment than occupants of buildings with normal planning and construction." The aim of the case study is to compare the outcome of using a quality system for indoor environment with a normal quality system
An automatic time sequence filter sampler has been developed for atmospheric aerosol particle sampling of ambient air and subsequent analysis for elemental composition using the proton beam of a Van de Graaff accelerator. Some features of the operation of the sampler are given, the retention of particles by the filter material are discussed, examples of the type of data obtained are presented, and
The development of treatments based on cognitive models of worry has led to improved outcomes for adults with Generalized Anxiety Disorder (GAD), and holds out the promise that similar improvements may be achieved for GAD further down the age range. The aim of the current study was to evaluate the effect of a GAD specific,cognitive treatment in a sample of children and adolescents with GAD. Sixtee
Popular Abstract in Swedish Om flyttningens betydelse för utbredningsmönster för arktiska fåglar Sara Henningsson Fågelflyttning är en anmärkningsvärt framgångsrik strategi som möjliggör att en större mängd individer kan försörjas genom rörelser mellan olika regioner. Inom dessa olika områden, som ofta ligger mycket långt ifrån varandra, kan fåglarna utnyttja stora säsongsmässigt tillgängliga resFlexibility as well as constraints to the evolution of migration routes has the possibility of affecting large-scale patterns of geographical ranges of animals both by facilitating, but sometimes restricting, accessibility to and colonization of new regions. This dissertation concerns the broad-scale effects migration has on the distributional patterns of birds in the Arctic. I studied the circu
Growing and eating food are cultural practices that simultaneously make physical bodies, shape landscapes, and produce racial (together with class/ethno/spatial) knowledge and identity. This chapter strives to complement the large body of work on race and racism in Brazil and elsewhere with an exploration of how some people in the Brazilian state of Bahia experience and communicate racialized iden
