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A model on the evolution of cryptobiosis

Cryptobiosis is an ametabolic state of life entered by some lower organisms (among metazoans mainly rotifers, tardigrades and nematodes) in response to adverse environmental conditions. Despite a long recognition of cryptobiotic organisms, the evolutionary origin and life history consequences of this biological phenomenon have remained unexplored. We present one of the first theoretical models on

An Integrated System-On-Chip Test Framework

In this paper we propose a framework for the testing of system-on-chip (SOC), which includes a set of design algorithms to deal with test scheduling, test access mechanism design, test sets selection, test parallelization, and test resource placement. The approach minimizes the test application time and the cost of the test access mechanism while considering constraints on tests, power consumption

Glaucoma detection by Stratus OCT

Purpose: To investigate the diagnostic accuracy of retinal nerve fiber layer thickness (RNFLT) summary report parameters from Stratus optical coherence tomography (OCT) in glaucoma patients. Patients and Methods: We obtained Stratus OCT measurements of peripapillary circle scans (average values) of the regular image resolution "FAST RNFLT" protocol, and of 1 circle scan of the high resolution "RNF

Carbon cycling in subarctic tundra; seasonal variation in ecosystem partitioning based on in situ 14C pulse-labelling

Carbon assimilation and allocation were studied in a tundra ecosystem in northern Scandinavia. Seasonal variation in the below-ground carbon allocation to dissolved organic carbon (DOC), coarse-, fine-, and hair roots was investigated using in situ C-14 pulse-labelling, adding 2-3 MBq (CO2)-C-14, dm(-2) to the above-ground vegetation. Combining the allocation data with regression models of the sea

Common variants in the ENPP1 gene are not reproducibly associated with diabetes or obesity

The common missense single nucleotide polymorphism (SNP) K121Q in the ectoenzyme nucleotide pyrophosphate phosphodiesterase (ENPP1) gene has recently been associated with type 2 diabetes in Italian, U.S., and South-Asian populations. A three-SNP haplotype, including K121Q, has also been associated with obesity and type 2 diabetes in French and Austrian populations. We set out to confirm these find

Interactions between Sulfide Minerals and Alkylxanthate Ions .1. A Vibrational Spectroscopic Study of the Interactions between Sphalerite and Synthetic Zinc(Ii) and Cadmium(Ii) Sulfides, and Ethylxanthate Ions in Aqueous and Acetone Solutions

The crystal structures of zinc(II) and cadmium(II) sulphides are not affected by the stoichiometry of metal and sulphide ions at the precipitation of the two compounds. The composition and structure of the ultimate surface layers, and thereby the chemical properties of the particles, are on the other hand sensitive to the stoichiometry at the preparation. Chemisorbed ethylxanthate complexes are fo

Effects of hypertonic saline, mannitol, and urea with regard to absorption and rebound filtration in cat skeletal muscle.

OBJECTIVE: To study the effects of the hypertonic solutions 15% mannitol, 3% and 7.5% saline, and 30% urea at clinically relevant plasma concentrations with regard to absorption and rebound effects on tissue volume in skeletal muscle. DESIGN: A prospective, experimental study. SETTING: University laboratory. SUBJECTS: Twenty-eight anesthetized cats. INTERVENTIONS: The study was performed on an aut

Slalom encodes an adenosine 3'-phosphate 5'-phosphosulfate transporter essential for development in Drosophila.

Sulfation of all macromolecules entering the secretory pathway in higher organisms occurs in the Golgi and requires the high-energy sulfate donor adenosine 3'-phosphate 5'-phosphosulfate. Here we report the first molecular identification of a gene that encodes a transmembrane protein required to transport adenosine 3'-phosphate 5'-phosphosulfate from the cytosol into the Golgi lumen. Mutations in

A low-phase-noise low-phase-error 1.8 GHz quadrature CMOS VCO

A low-phase-noise low-phase-error 1.8 GHz quadrature CMOS VCO was presented. The VCO with three metal layers showed -140 dBc/Hz or less phase noise across an 18% tuning range while drawing 25 mA from a 2 V power supply. The VCO showed high phase-noise figure-of-merit and low phase-error.

Överdosens antropologi : En kontextuell studie

Popular Abstract in Swedish Överdosens antropologi behandlar narkotikaöverdosens sociala konsekvenser. Eva-Malin Antoniusson har studerat hur olika aktörer i vård- och institutionsmiljöer förhåller sig till överdoser. Forskningen bygger på fältundersökningar i Sverige, USA och Nederländerna. I avhandlingen återges intervjuer med narkomaner som överlevt överdoser eller varit med när andra överdoserThe central theme of this thesis is the nature of heavy drug overdose and its social consequences. The aim of the study is to provide a nuanced ethnographic interpretation on the phenomenon concerning drug overdose, especially among drug users using injections as the principle means of administering the drugs. The field study was localized to institutional milieus, primarily drug addiction treatme

Effect of treatments on the progression of COPD: report of a workshop held in Leuven, 11-12 March 2004

During the last decade several long term studies of interventions in patients with COPD have been published. This review analyses the potential of these interventions to alter the progression of the condition. The only treatment that has unequivocally been shown to reduce the rate of decline in FEV(1) is smoking cessation. Active psychological intervention in combination with pharmacotherapy is re

Structure and expression of the human cystatin C gene

The structural organization of the gene for the human cysteine-proteinase inhibitor cystatin C was studied. Restriction-endonuclease digests of human genomic DNA hybridized with human cystatin C cDNA and genomic probes produced patterns consistent with a single cystatin C gene and, also, the presence of six closely related sequences in the human genome. A 30 kb restriction map covering the genomic

Model-based optimization of a preparative ion-exchange step for antibody purification

A method using a model-based approach to design and optimize an ion-exchange step in a protein purification process is proposed for the separation of IgG from a mixture containing IgG, BSA and myoglobin. The method consists of three steps. In the first step, the model is calibrated against carefully designed experiments. The chromatographic model describes the convective and dispersive flow in the

Effects of an agri-environment scheme on wader populations of coastal meadows of southern Sweden

Survey data on breeding wader densities and grazing intensity on coastal meadows on the Baltic island of Öland from 1988, 1998 and 2003 were used to evaluate density and density-changes of four common and widespread wader species, lapwing Vanellus vanellus, redshank Tringa totanus, oystercatcher Haematopus ostralegus and ringed plover Charadrius hiaticula in relation to grazing intensity. Populati

A systematic overview of radiation therapy effects in soft tissue sarcomas

A systematic review of radiation therapy trials in several tumour types was performed by The Swedish Council of Technology Assessment in Health Care (SBU). The procedures for evaluation of the scientific literature are described separately (Acta Oncol 2003; 42: 357-365). This synthesis of the literature on radiation therapy for soft tissue sarcomas (STS) is based on data from five randomized trial