Vertical light emitting diodes (LEDs) based on GaAs/InGaP core/shell nanowires, epitaxially grown on GaP and Si substrates, have been fabricated. The devices can be fabricated over large areas and can be precisely positioned on the substrates, by the use of standard lithography techniques, enabling applications such as on-chip optical communication. LED functionality was established on both kinds

Our objective was to investigate which drugs young people who attempt suicide use in the Lund catchment area-eight municipalities in Skane, southern Sweden. All patients aged up to 18 years admitted to Lund University Hospital after deliberate or probably deliberate self-poisoning from 1 January 1991 until 31 December 1995 were included. Forty-nine (58%) had used a single drug; 20 (24%) had used 3

In situ growth rates of the toxin-producing dinoflagellate Dinophysis norvegica collected in the central Baltic Sea were estimated during the summers of 1998 and 1999. Flow cytometric measurements of the DNA cell cycle of D. norvegica yielded specific growth rates (μ) ranging between 0.1 and 0.4 per day, with the highest growth rates in stratified populations situated at 15–20 m depth. Carbon upta

The ERBB2 proto-oncogene was studied in 539 invasive primary breast tumors and was found amplified (2- greater than 30 copies) in 19%. Amplification was correlated to most known risk factors, including; large tumor size, lymph node positivity and many tumor involved nodes, advanced stage, low patient age (less than 40 years), non-diploidy and hypertetraploidy, and most significantly (P less than 0

Glucagon-like peptide-1 (GLP-1) increases beta-cell function and growth through protein kinase A- and phosphatidylinositol-3-kinase (PI3-K)/protein kinase B, respectively. GLP-1 acts via a G protein-coupled receptor, and PI3-K gamma is known to be activated by G(beta gamma). Therefore, the role of PI3-K gamma in the chronic effects of GLP-1 on the beta-cell was investigated using PI3-K gamma knock

Carbonyl carotenoids are important constituents of the antenna complexes of marine organisms. These carotenoids possess an excited state with a charge-transfer character ( intramolecular charge transfer state, ICT), but many details of the carotenoid to chlorophyll energy transfer mechanisms are as yet poorly understood. Here, we employ femtosecond transient absorption spectroscopy to study energy

Polymer-coated pellets with different coating thicknesses have been studied regarding coating morphology and drug release properties with atomic force microscopy (AFM) and confocal Raman microscopy. The results were compared with those from scanning electron microscopy (SEM) and drug release profiles, which have been measured previously for these systems and found to vary depending on coating thic

In hybrid zones genetically differentiated populations meet and interbreed. As they result from ongoing divergence and potential speciation, such zones provide opportunities to study how different factors affect this process. One well-known avian hybrid zone is that between the Hooded Crow Corvus corone cornix and Carrion Crow C. c. corone, which extends throughout much of Europe. We compare the c

In this paper we empirically test the role of firm-specific financial characteristics as drivers of international investment and production. We hypothesize that financial strength generates advantages that can be exploited through cross-border investment activity. The hypothesis is tested in a series of binary-response models, using a sample of 1379 European non-financial firms' international acqu

Although smoking is associated with cardiovascular disease (CVD), many individuals remain healthy after many years of smoking. The population based cohort 'Men born in 1914' was used to investigate whether the occurrence of non-invasively detected atherosclerosis among smokers is associated with lung function [(i.e. height-adjusted forced expiratory volume during 1 s (FEV1.0) and vital capacity (V

Vascular involvement in neurofibromatosis sometimes occurs and usually affects larger blood vessels of internal organs. We describe an unusual case of a now 41-year-old man with extensive skin involvement with ulcerations and histopathologic features of fibromuscular dysplasia, which has not been previously reported in the skin.

Variants of the hammerhead ribozyme with high in trans (intermolecular) cleavage activity at low Mg2- concentrations were in vitro selected from a library with 78 nucleotides randomised in the core and in helix II. The most active hammerhead ribozyme selected had e sequence as the consensus ribozyme in the core but only two base pairs in stem II, G(10.1)-C(11.1) and U(10.2)-A(11.2), and a tetrauri

Aim: Polysaccharides and many other non-protein polymers generally have a more open, flexible and asymmetrical structure compared with globular proteins. For a given molecular weight (MW), the Stokes–Einstein radius (ae) of the following polymers increases in the order: Ficoll < dextran ≤ pullulan < polyethylene oxide (PEO). We have tested the hypothesis that such an increase in 'molecular extensi

The effect of a single washing of the urogenital tract with 0.5 g/l chlorhexidine was studied in 6 women in weeks 38-40 of pregnancy, among whom 5 were carriers of group B streptococci in urethra and/or cervix. The chlorhexidine concentrations varied between 25 and 200 mg/l during the first hour after washing in 5 of the 6 women, whereas one patient showed concentrations below 25 mg/l. With the ex