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Plant-microbial competition for nitrogen uncoupled from soil C:N ratios

A green house experiment was designed to test the idea that competition for inorganic nitrogen (N) between plants and heterotrophic microorganisms occurs in soils with high C:N ratios, qualifying for N limited microbial activity, but not at low C:N ratios. The short- term (24 h) N-15 uptake by the grass Festuca gigantea and microorganisms in planted and unplanted soils was determined, and the bact

Physiological and psychological reactions to work in men and women with identical job tasks

Differences in physiological functioning in the hypothalamus-pituitary-adrenal cortex axis and the autonomic nervous system have been suggested to contribute to many of the health differences that may be observed between men and women as well as being relevant for the development of musculoskeletal pain. To clarify whether men and women with identical work tasks reacted differently when doing work

The highest spin discrete levels in Ce-131,Ce-132

The three superdeformed (SD) bands in Ce-132 and the two SD bands in Ce-131 have been extended to higher spin following experiments with the EUROBALL IV spectrometer. The two SD bands in 131Ce have been linked together. However, despite the relatively high population intensity of the bands ( up to 5% of the respective channel), it has not been possible to unambiguously link any of the five SD band

Intra-cavitary dosimetry for IMRT head and neck treatment using thermoluminescent dosimeters in a naso-oesophageal tube

Complex intensity-modulated radiation therapy (IMRT) treatment plans require rigorous quality assurance tests. The aim of this study was to independently verify the delivered dose inside the patient in the region of the treatment site. A flexible naso-gastric tube containing thermoluminescent dosimeters (TLDs) was inserted into the oesophagus via the sinus cavity before the patient's first treatme

Mitochondrial ATP synthase--a possible target protein in the regulation of energy metabolism in vitro and in vivo.

The increasing prevalence of obesity in the Western world has stimulated an intense search for mechanisms regulating food intake and energy balance. A number of appetite-regulating peptides have been identified, their receptors cloned and the intracellular events characterized. One possible energy-dissipating mechanism is the mitochondrial uncoupling of ATP-synthesis from respiratory chain oxidati

The EF-hand domain: A globally cooperative structural unit

EF-hand Ca2+-binding proteins participate in both modulation of Ca2+ signals and direct transduction of the ionic signal into downstream biochemical events. The range of biochemical. functions of these proteins is correlated with differences in the way in which they respond to the binding of Ca2+. The EF-hand domains of calbindin D-9k and calmodulin are homologous, yet they respond to the binding

Social Work in the Criminal Justice System : An Ambiguous Exercise of Caring Power

In this article the caring power in the Swedish probation service is discussed. By exploring the history of probation, formed since the early 19 th century, the structure that is constructed through human interaction and that defines the role of helper and helped is shown. Within this structure, different interpretations exist and different stories are told. This variation is highlighted through s

Bronchoalveolar lavage in children with chronic diffuse parenchymal lung disease

The aim of the present study was to compare cellular and noncellular components of bronchoalveolar lavage fluid (BAL) in a group of children with a diagnosis of chronic diffuse parenchymal lung disease (cDPLD) and a group of children without parenchymal lung disease undergoing BAL for various clinical indications (control group). We evaluated cellular and non-cellular components (total proteins, a

EANM procedure guideline for (32)P phosphate treatment of myeloproliferative diseases.

Introduction P-32 phosphate was the first therapeutic radioisotope, used in leukaemia about 70 years ago. Since then, many new agents for haematological proliferations have been introduced successfully. Today there remains a distinct subgroup of elderly patients with polycythaemia vera and essential thrombocythaemia for whom P-32 is the most optimal treatment option, an assertion supported by two

Closing the ring: historical biogeography of the salamander ring species Ensatina eschscholtzii

The salamander Ensatina eschscholtzii Gray is a classic example of a ring species, or a species that has expanded around a central barrier to form a secondary contact characterized by species-level divergence. In the original formulation of the ring species scenario, an explicit biogeographical model was proposed to account for the occurrence of intraspecific sympatry between two subspecies in sou

Increased claudin-4 expression is associated with poor prognosis and high tumour grade in breast cancer

The role of intercellular tight junctions in breast epithelia[ cells is traditionaliy thought to be in maintaining polarity and barrier function. However, claudin-4, a tight junction protein, is overexpressed in breast tumour cells compared to normal epithelial cells, which generally corresponds to a loss in polarity. The aim of this study was to investigate the distribution and potential clinical

Tumour microvessel density as predictor of chemotherapy response in breast cancer patients

The aim of this study was to evaluate the predictive value of intratumoural microvessel density in breast cancer. We studied immunohistochemically primary tumours of 104 patients with metastasised breast cancer who took part in a randomised multicentre trial comparing docetaxel to sequential methotrexate and 5-fluorouracil. Vessels were highlighted with factor VIII staining and counted microscopic

Synthesis and biology of bis-xylosylated dihydroxynaphthalenes.

The 10 analogous bis-xylosylated dihydroxynaphthalenes have been synthesized and their chemical and biological properties investigated. The yield of the xylosylation reactions can be correlated to the electrostatic potential, and thus to the nucleophilicity, for the oxygen atoms of the dihydroxynaphthalenes. The bis-xylosylated compounds were more stable compared to the mono-xylosylated ones. They

Structure of the Bifunctional dCTP Deaminase-dUTPase from Methanocaldococcus jannaschii and Its Relation to Other Homotrimeric dUTPases

The bifunctional dCTP deaminase-dUTPase (DCD-DUT) from Methanocaldococcus jannaschii catalyzes the deamination of the cytosine moiety in dCTP and the hydrolysis of the triphosphate moiety forming dUMP, thereby preventing uracil from being incorporated into DNA. The crystal structure of DCD-DUT has been determined to 1.88-Å resolution and represents the first known structure of an enzyme catalyzing

Instruments to foster renewable energy investments in Europe

Since capital needs are high when investing in Renewable Energy Technologies (RET), well adapted financial schemes are essential, including well fitted financial support. Supporting the dissemination of RET means supporting people, not technologies. Though, support mechanism have to be adapted to people not to technologies. A recent study for the European Parliament compares support mechanisms for

Sudden cardiac death risk factors in patients with heart failure treated with carvedilol

Background: Chronic heart failure (CHF) is associated with a high risk of sudden cardiac death (SCID). Most frequently SCID occurs in patients with NYHA class II and III. Aim: To evaluate the influence of prolonged carvedilol therapy on SCID risk in CHF patients. Methods: The study included 86 patients (81 men and 5 women) aged 56.8 +/- 9.19 (35-70) years with CHF in NYHA class II and III receivin