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Epitaxial growth of semiconductor nanowires

This thesis describes the results obtained from investigations carried out on epitaxially grown III-V semiconductor nanowires aimed at improving our understanding of and knowledge on the growth mechanism of nanowires. This is important to be able to control their growth, in order to make future applications possible. Nanowire growth was carried out using chemical beam epitaxy (CBE). This is a gro

Type 2 Cystatins. Studies on the role of the major cystatin, cystatin C, in mice and on properties and distribution of the novel human cystatins F, G, H and I.

Popular Abstract in Swedish Vår arvsmassa består av en cirka två meter lång tråd av DNA. Denna långa DNA-tråd är väl hoppackad och alla kärnbärande celler i kroppen har en kopia av den. Tråden kan delas upp i korta segment som utgör våra gener och mellanliggande segment vars uppgift inte är helt klarlagd. Totalt har vi enligt nuvarande beräkningar cirka 30 000 gener. Dessa gener, som innehåller koThe aim the thesis work was to study the human cystatins C, E/M, F, G, H and I both in vivo and in vitro. A mouse devoid of cystatin C was used for the cystatin C studies. The levels of cystatins C, E/M and F were measured in pleural effusion samples of patients with various lung disorders. Cystatin F protein and RNA levels were measured in the human haematopoietic cell line U937 as well as in cel

Stable peace in the Baltic Sea region: Prospects and problems

The end of the Cold War and the subsequent dismantling of the Soviet Union has brought about fundamental changes in the Baltic Sea region in the last decade. In view of these developments, this article addresses two central questions when it comes to Baltic Sea security—how can the current peace in the Baltic Sea region be characterized and what are the prospects and problems involved in achieving

Expression and Function of Human and Plant Aquaporins

Popular Abstract in Swedish En cell är den minsta beståndsdelen av det som vi definierar som liv. Cellen avgränsas av ett cellmembran som gör att rätt miljö, dvs rätt koncentration av alla nödvändiga molekyler, upprätthålls inuti cellen. Cellmembranet består bl a av olika slags fett, sk lipider. Många små molekyler kan fritt passera igenom membranet medan andra kräver specifika transportkanaler i The aquaporins (AQPs) belong to a family of water permeable membrane channels found in virtually all living organisms. Thirteen isoforms of mammalian AQPs are found, whereas in Arabidopsis thaliana 35 genes encoding AQPs are found. The AQPs are distributed in different organs, cell types and in different subcellular membranes. The aquaporins form homotetramers where each monomer functions as an in

Decomposing the Afternoon Effect: An Empirical Investigation of Sequential Train Ticket Auctions

The afternoon effect, i.e., that prices in a sequence of auctions with identical items are decreasing with the order in which the auctions are terminated, is a frequently observed phenomenon in empirical auction studies. Using an unsurpassed amount of data from sequential online train ticket auctions, we investigate two hitherto unexplored dimensions inherent in sequential auctions, namely, the ti

Three Pion Interferometry in the NA44 Experiment

This thesis presents a three-particle correlation analysis with pions originating from Sulphur-Lead and Lead-Lead collisions at 200 and 158 GeV/c per nucleon respectively, taken by the CERN heavy-ion experiment NA44. The genuine three-body correlation is suppressed in both colliding systems which indicates that the particle production source is partly coherent. The two-dimensional three-particle c

Introduction

Recent choir related research has different points of departure. One point of departure involves theory and methodology developed in cultural and social sciences. Another includes historical musicology. With choir as an overarching umbrella concept, the network Choir in Focus provides the scope for cooperation across national and disciplinary borders. This includes cooperation between the traditio

Future stratospheric ozone depletion will affect a subarctic dwarf shrub ecosystem

Popular Abstract in Swedish Det stratosfäriska ozonlagret håller på att förtunnas och detta kommer att leda till att mer skadlig ultraviolett-B (UV-B) strålning når ner till biosfären. För att undersöka hur detta påverkar ett subarktiskt hedekosystem har vi bestrålat ett sådant med extra UV-B strålning motsvarande 15 % ozonförtunning. Studierna har utförts på en dvärgbuskhed vid Abisko NaturvetensThe stratospheric ozone depletion and the concomitant increase in ultraviolet-B (UV-B, 280-320 nm) radiation is of global concern due to the effects of UV-B on living organisms. To investigate the effects of increased levels of UV-B, a field irradiation system was established at a subarctic dwarf shrub heath in Northern Sweden (68 °N). An ozone depletion of 15 % under clear sky conditions was simu