Temperature is an important factor regulating microbial activity and shaping the soil microbial community. Little is known, however, on how temperature affects the most important groups of the soil microorganisms, the bacteria and the fungi, in situ. We have therefore measured the instantaneous total activity (respiration rate), bacterial activity (growth rate as thymidine incorporation rate) a...

Experimental analyses of decay in a tunicate deuterostome and three lophotrochozoans indicate that the controls on decay and preservation of embryos, identified previously based on echinoids, are more generally applicable. Four stages of decay are identified regardless of the environment of death and decay. Embryos decay rapidly in oxic and anoxic conditions, although the gross morphology of em...

dexamethasone induces thymic atrophy and thymocyte apoptosis. in the present study histological and ultrastructural changes which occur in the thymus of the mouse (balb/c) following treatment with high (20 mg/kg) and low (8 mg/kg) doses of dexamethasone were investigated. in low dose treated mice, apoptotic cells were observed focally and localized mainly in thymic nurse cells (t.n.c.). a zone ...

Human subjects decide when to sink a xed cost C to seize an irreversible investment opportunity whose value V is governed by Brownian motion. The optimal policy is to invest when V rst crosses a threshold V ∗ = (1+w∗)C, where the wait option premiumw∗ depends on drift, volatility, and expiration hazard parameters. Subjects in the Low w∗ treatment on average invest at values quite close to opt...

introduction:holmium-166 radionuclide is one of the most effective radionuclides used for targeted therapy with theranostic properties. one method to produce this radioisotope is via the decay of its parent (indirect method). in this study applicability of extraction chromatography (exc) for separation of no carrier added 166ho from neutron-irradiated natural dysprosium target followed by quali...

a b s t r a c t a few case reports of coinfections with nocardia and mycobacterium tuberculosis (tb) have previously been published in the literature. we report on a case of concomitant pulmonary nocardiosis and tuberculosis, in a recently diagnosed 55-year-old woman, with rheumatoid arthritis, who had been taking a short course of a low dose corticosteroid. the patient was treated with a combi...

The main aim of this study was to evaluate the effect salicylic acid (SA) as a preharvest treatment on crop yield throughout cycle green pepper fruit well its quality parameters, including functional quality, at harvest and during 21 days storage 7 °C. Thus, ‘Herminio’ plants were treated with SA 0.5, 1 5 mM, higher (kg per plant, number fruits plant average weight) parameters (firmness, color ...

there are little information about growth properties of low pathogenic (lp) avian influenza virus (aiv) in embryonated chicken eggs (eces) at different incubation temperatures. knowledge of this information increases the quantity and quality of antigen in vaccine production process. for this purpose, 10-5 dilution of aiv (a/chicken/iran/99/h9n2) was inoculated (intra-allantoic) into 400, 11-day...

An in situ optical absorbance measurement was used to study the growth dynamics of vertically aligned single-walled carbon nanotubes (VA-SWCNTs) synthesized by chemical vapor deposition of ethanol. The growth rate of the VA-SWCNT film was found to decay exponentially from an initial maximum, resulting in an effective growth time of approximately 15 minutes. Investigation of various growth condi...