We detail our studies on the transient propagation of coherent acoustic phonons (CAPs) in Mn-doped Cd1–xMnxTe [(Cd,Mn)Te] diluted-magnetic and pure CdTe semiconductors. The CAPs were generated by femtosecond optical pulses and then time-resolved using oneand two-color pump-probe spectroscopy. Intrinsic lifetimes on the order of at least tens of nanoseconds of CAP oscillations were observed in (...

A major structural element of bacterial endospores is a peptidoglycan (PG) wall. This wall is produced between the two opposed membranes surrounding the developing forespore and is composed of two layers. The inner layer is the germ cell wall, which appears to have a structure similar to that of the vegetative cell wall and which serves as the initial cell wall following spore germination. The ...

compound action potential (cap) of spinal cord represents valuable properties of neural fibers including excitability, rate of myelination and membrane integrity. these properties are measured using amplitude, latency and area under curve of caps recorded from spinal cord. here, the isolated spinal cord was set in a double sucrose gap (dsg) chamber and its response to intracellular stimulation ...

the objective of this study was to formulate and evaluate the drug-polymer interaction of mefenamic acid (ma) using two polymers with different characteristics as ethylcellulose (ec) and/or cellulose acetate phthalate (cap). microspheres were prepared by the modified emulsion solvent evaporation (mese). the effect of drug-polymer interaction was studied for each of microspheres. important param...

the most important limiting factor for mass production of mycorrhizal fungi inoculums and subsequently their use in arable soil is obligate nature of this symbiosis. to overcome this problem, several methods such as hydroponic ,aeroponic, and root organ culture have been proposed for spore production of these fungi. each of these methods has several capabilities and limiting factors.  the goal ...

rice blast, caused by pyricularia grisea, is one of the most important diseases of this crop in iran and all over the world. to evaluate the relationship between spore population (sp) and meteorological factors, sp was measured daily using spore trap during growing seasons of 2006-2008 in rasht and lahijan regions (guilan province, iran). weather data including precipitation, daily maximum and ...

Abstract Spore-forming bacteria form the most diverse and complex group of in terms their elimination from dairy chain, due to ability highly resistant spores. As ubiquitous microorganisms, spore-formers can enter product along milk-processing continuum different sources, subsequently cause spoilage various types products. The important classes spore-forming relevant industry are Bacilli Clostr...

The role of DNA repair by nonhomologous end joining (NHEJ), homologous recombination, spore photoproduct lyase, and DNA polymerase I and genome protection via alpha/beta-type small, acid-soluble spore proteins (SASP) in Bacillus subtilis spore resistance to accelerated heavy ions (high-energy charged [HZE] particles) and X rays has been studied. Spores deficient in NHEJ and alpha/beta-type SASP...

landfill gas is generated by organic waste decomposing under anaerobic conditions. landfill gas contributes to the emission in the atmosphere of greenhouse gases and causing global warming. humidity of environment is an effective parameter on rate of gas generation in landfills. saravan landfill is investigated as study area in this research. it located in 20 kilometers of rasht-tehran highway....

Repeated subculturing caused rapid changes in the spore surface properties and virulence of Metarhizium anisopliae. Of the two strains evaluated, M. anisopliae V245 attenuated more rapidly than V275. Electrophoretic mobility and Radial Flow Chamber assays were used for the first time to generate qualitative and quantitative information on the adhesive forces of M. anisopliae conidia. Independen...