Sökresultat

Filtyp

Din sökning på "*" gav 529724 sökträffar

Improved operational stability of chloroperoxidase through use of antioxidants.

Chloroperoxidase (CPO) from Caldariomyces fumago is a potentially very useful enzyme due to its ability to catalyze a large variety of stereoselective oxidation reactions, but poor operational stability is a main limitation for commercial use. In the present study, the possibility of increasing the operational stability by use of antioxidants was investigated using the oxidation of indole as model

Long-term land-use changes and extinction of specialised butterflies

1. Land-use change in 450 ha in southern Sweden between 1814 and 2004 was recorded. Butterflies and burnet moths were surveyed in 1904–1913 and 2001–2005. 2. We explore if local extinctions were related to land-use changes and species attributes. 3. Land use changed drastically over the 190-year period, and the largest relative change occurred for hay meadows with late harvest, which decreased fro

Sertoli-Leydig cell tumour in a postmenopausal woman showing all facets of the insulin resistance syndrome (IRS)

Sertoli-Leydig cell tumours are rare sex stromal tumours with an incidence of < 0.5% of all ovarian tumours. Most frequently this tumour occurs in young women with a history of amenorrhoea, hirsutism and lowered pitch. Here, we report on a woman with IRS, postmenopausal virilization and increased testosterone levels due to a Sertoli-Leydig cell tumour. This is the first case to suggest an associat

Electrical communication of cytochrome enriched Escherichia coli JM109 cells with graphite electrodes

In the present study three different strains of Escherichia coli (JM 109 - a native "wild type" strain, JM 109/pBSD 1300 - a strain overproducing the membrane anchor domain of Bacillus subtilis succinate-quinone reductase, SQR, a protein that contains two transmembraneously arranged heme groups and JM109/pLUV 1900 - a strain overproducing cytochrome c(550) from B. subtilis, a protein where the cyt

Magnetic resonance imaging and histopathology in dementia, clinically of frontotemporal type

The magnetic resonance imaging (MRI) and computed tomography findings in 28 patients with the clinical diagnosis of frontotemporal dementia (FTD) were compared with the findings in a control group of 76 individuals without dementia or stroke. A pattern of frontal and temporal atrophy with predominantly frontal white matter changes was found in the FTD patients, and this was significantly different

Analytic derivatives for the Cholesky representation of the two-electron integrals.

We propose a formalism for calculating analytic derivatives of the electronic energy with respect to nuclear coordinates using Cholesky decomposition of the two-electron integrals. The formalism is derived by exploiting the equivalence of Cholesky decomposition and density fitting when a suitable auxiliary basis set is used for expanding atomic orbital product densities in the latter. An implement

Differential response of human cardiac fibroblasts to angiotensin I and angiotensin II

The vasoactive peptide angiotensin II (Ang II) has been implicated as a mediator of myocardial fibrosis. We carried out a comparative investigation of the effects of Ang II and its precursor Ang I on collagen metabolism and proliferation in cultured human cardiac fibroblasts. Cardiac fibroblasts responded to both Ang I and Ang II with concentration-dependent increases in collagen synthesis but no

What does not move any hearts – why should it be saved? The Denkmalpflegediskussion in Germany.

This paper is about the recent discussions (known as Denkmalpflegediskussion) on the principles and practices of state heritage management in Germany. In an expert report commissioned by the prominent German politician Antje Vollmer from Dieter Hoffmann-Axthelm, a number of fundamental criticisms were made. They concern existing practices of state heritage management, some of which are said to ali

Socioeconomic inequalities and disability pension in middle-aged men

BACKGROUND: The issue of inequalities in health has generated much discussion and socioeconomic status is considered an important variable in studies of health. It is frequently used in epidemiological studies, either as a possible risk factor or a confounder and the aim of this study was to analyse the relation between socioeconomic status and risk of disability pension. METHODS: Five complete bi