Snow collected at various depths from a core of up to 7.7 m deep, at Mt. Tateyama (2450 m), Japan, showed the highest concentrations of PFASs in the surface layer and the concentrations decreased with increasing depth for most PFASs, find more except for perfluorobutanesulfonate (PFBS). Downward movement of highly water soluble PFASs such as PFBS, following melting and freezing cycles of snow, was evident from the analysis of snow core. (C) 2013 Elsevier Ltd. All rights reserved.”
“Malignant melanoma is the least common but most deadly of all primary skin cancers. Oral malignant melanoma is a rare aggressive neoplasm
usually seen in middle aged persons. This malignancy is more frequently seen on the hard palate and gingiva. Oral melanomas are associated with very poor prognosis because of the tendency to metastasise or invade tissues
locally more readily than other malignant tumours of the oral cavity especially in the case of a geriatric patient. The surgical approach, combined with the chemotherapy, is the first choice treatment. Fludarabine This report highlights a case report of 71-year-old female patient diagnosed and treated surgically for an oral malignant melanoma of the pedunculated variety affecting the hard palate and gingiva with review of literature.”
“The authors present a method for obtaining graphitized carbon on GaAs(100) surfaces. Carbon-doped GaAs is grown by molecular beam epitaxy before controlled thermal etching within the growth chamber. An AlAs layer beneath the carbon-doped GaAs acts as a thermal etch stop. As the GaAs is etched away, the carbon dopant atoms remain on the surface due to their low vapor pressure. Selonsertib The total number of carbon atoms available is precisely controllable by the doping density and thickness of the carbon-doped GaAs layer. Characteristic phonon modes in Raman spectra from the thermally etched surfaces show that the residual surface carbon atoms form sp(2)-bonded graphitic crystallites. (C) 2011 American Vacuum Society. [DOI: 10.1116/1.3547716]“
“The Fertile Crescent is the centre
of domestication of chickpea (Cicer arietinum) and also the place of origin of its pathogens. Agrosystems provide different environments to natural eco-systems, thus imposing different types of selection on pathogens. Here, the genetic structure and in vitro temperature growth response of the chickpea pathogen Didymella rabiei from domesticated chickpea (59 isolates from Turkey and 31 from Israel) and wild Cicer spp. (three isolates from Turkish C. pinnatifidum and 35 from Israeli C. judaicum) were studied. Six sequence-tagged microsatellite site (STMS) primer pairs were used to determine the genetic structure of the 128 D. rabiei isolates. Turkish isolates exhibited the highest genetic diversity (H = 0.69). Turkish and Israeli D. rabiei from domesticated chickpea were genetically closer to each other than isolates from the wild Cicer spp.