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A new thermostable alpha-L-arabinofuranosidase from a novel thermophilic bacterium

An alpha-L-arabinofuranosidase gene was identified in a sequenced genome of a novel thermophilic bacterium, which belongs to the recently described phylum of Thermomicrobia. Amino acid sequence comparison of the enzyme (designated AraF) revealed similarity to glycoside hydrolases of family 51. The gene was cloned into Escherichia coli and its recombinant product expressed and purified. The enzyme

Subluxation of the upper thoracic spine in rheumatoid arthritis

Only single cases with rheumatoid arthritis of the thoracic spine with vertebral subluxation have been reported to date. In a review of 100 patients with severe rheumatoid arthritis who had undergone occipitocervical fusion, arthritis of the upper thoracic spine with subluxation was discovered on conventional radiographs in four patients. Two additional patients were found elsewhere. Magnetic reso

Decreased VIP and VPAC(2) receptor expression in the biological clock of the R6/2 Huntington's disease mouse

Huntington's disease (HD) is a fatal genetic neurodegenerative disorder caused by a CAG triplet repeat expansion in the gene encoding the protein huntingtin. The most studied model of HD, the R6/2 transgenic mouse, replicates many features of the disease. In addition to motor, cognitive, and endocrine dysfunctions, these mice exhibit a progressive disruption of circadian rhythms. This is accompani

Microwaves from GSM mobile telephones affect 53BP1 and gamma-H2AX foci in human lymphocytes from hypersensitive and healthy persons

The data on biologic effects of nonthermal microwaves (MWs) from mobile telephones are diverse, and these effects are presently ignored by safety standards of the International Commission for Non-Ionizing Radiation Protection (ICNIRP). In the present study, we investigated effects of MWs of Global System for Mobile Communication (GSM) at different carrier frequencies on human lymphocytes from heal

Electronic stopping powers for heavy ions in silicon

The stopping powers in silicon of heavy ions, with atomic numbers ranging from 4 to 29, have been determined using a time-of-flight elastic recoil detection analysis (TOF ERDA) set-up. In transmission geometry, the energy loss of heavy elastic recoils in the self-supporting silicon foil of known thickness is measured over a continuous range of recoil energies using time-of-flight (TOF) spectrometr

From Pioneers to Target Group : Social Change, Ethnicity and Memory in a Lithuanian Nuclear Power Plant Community

Popular Abstract in Swedish Denna avhandling i socialantropologi ägnas åt analysen av sociala och kulturella processer i Visaginassamhället efter sovjettiden. Visaginas (tidigare Sniechkus) byggdes under sovjettiden, åren 1975-1989, som hemvist för personal vid Ignalinas kärnkraftverk och deras familjer. De flesta invånarna i staden är ryssar som kom till Litauen mellan 1975 och 1989 för att byggaThis thesis focused on an examination of human agency and strategies for responding to rapid social and economic change. Fieldwork was carried out in the community of Visaginas town that was built during the Soviet period in Lithuania. The town is situated next to the Ignalina nuclear power plant. The majority of the town's inhabitants are Russians who immigrated to Lithuania from other areas of t

Antifungal activity of C3a and C3a-derived peptides against Candida.

Antimicrobial peptides are generated during activation of the complement system [Nordahl et al. Proc. Nat1. Acad. Sci. U. S. A. 2004, 101:16879-16884]. Here we show that the anaphylatoxin C3a exerts antimicrobial effects against the yeast Candida. Fluorescence microscopy and electron microscopy analysis demonstrated that C3a-derived peptides bound to the cell surface of Candida, and induced membra

Decolonizing the Viking Age 1

Popular Abstract in Swedish Avhandlingen "Decolonizing the Viking Age", i två volymer, argumenterar för att den skandinaviska vikingatiden kan ses som en teoretisk konstruktion som i allt väsentligt utarbetades under det sena 1800-talet. Detta tankesystem har därefter i allt väsentligt reproducerats till våra dagar. Konstruktionen av vikingatiden påverkades kraftigt av nationalism och evolutionsteDecolonizing the Viking Age 1 argues that the Scandinavian “Viking Age” can be seen as a system of knowledge constructed in the late 19th century and in its basic structures maintained up to the present day. This system of knowledge was heavily influenced by the nationalistic and evolutionary ideas of its time of making and may be described as a colonialism of the past. The book follows the making

Reevaluation of the species of Hieracium sect. Hieracium that were described by Hylander from introduced populations in Scandinavian parks

Hylander treated 144 species of Hieracium sect. Hieracium found in Scandinavian parks, 132 of which were described for the first time. However, he did not supply any determination key, only a few species were illustrated and hints about the differences between species were few. In addition, the species concept of Hylander was obviously much narrower than what has been agreed upon by those working

New strategies for extraction and clean-up of persistent organic pollutants from food and feed samples using selective pressurized liquid extraction

Pressurized liquid extraction (PLE) has gained wide acceptance for the extraction of persistent organic pollutants (POPs) from various environmental and biological matrices. This extraction technique was developed to shorten the extraction step, since this is one of the most time-consuming steps in many analytical procedures. When POPs enter the food chain, as in a number of recent food crises, th

Putting discourse to work: Information practices and the professional project of nurses

This article contributes to discourse-oriented, information-seeking research by showing how discourses, from a neopragmatist perspective, can be explored as tools that people employ when they actively engage in information practices in varied social contexts. A study of nurses and the nursing profession in Sweden is used as an empirical example of such a context, which is in the article understood

Comparison of New Experimental and Astrophysical F-values For Some Ru-ii Lines, Observed In Hst Spectra of Chi-lupi

We report on experimental absolute oscillator strengths for 18 UV lines of Ru II, obtained by combining laser-induced fluorescence measurements of radiative lifetimes and branching fractions from line intensities in a calibrated Fourier-transform spectrum. HST/GHRS observations of the spectrum of the sharp-lined B star chi Lupi contain six of these lines, for which ''astrophysical'' relative f-val

Sinonasal T-cell lymphoma in the differential diagnosis of lethal midline granuloma using in situ hybridization for Epstein-Barr virus RNA

"Lethal midline granuloma" of the upper airways generally encompasses T-cell lymphoma and Wegener's granulomatosis in Western populations. Treatment and outcome for each is different, but their pathological distinction may not always be possible on routine biopsy specimens. Within a defined population between 1947 and 1994, we found 12 cases of primary sinonasal T-cell lymphoma, all with a CD20-,

Basic Deformations of High-Performance Concrete at Early Ages.

Creep and shrinkage are two major problems to be discussed in concrete design. Basic creep is studied during constant loading, temperature and moisture conditions, i.e. no exchange of moisture takes place to or from the specimen during the test period. In this paper an experimental and numerical study of basic creep of High Performance Concrete (HPC) is outlined. For this purpose cylinders and cub