The results for tube geometries are found to be in contrast with the limiting (single-interface) special cases of wires and antiwires. Numerical examples are presented mainly for Ni materials. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3554208]“
“Genomic DNA sequences are an irreplaceable source for reconstructing the vanished past of living this website organisms. Based on updated sequence data,
this paper summarizes our studies on species divergence time, ancient population size and functional loss of genes in the primate lineage leading to modern humans (Homo sapiens sapiens). The inter-and intraspecific comparisons of DNA sequences suggest that the human lineage experienced a rather severe bottleneck in the Middle Pleistocene, throughout which period the subdivided African population played a predominant role in shaping the genetic architecture of modern humans. Also, published and newly identified human-specific pseudogenes (HSPs) are enumerated in order to infer their significance for human evolution. Of the 121
candidate genes obtained, authentic HSPs turn out to comprise only 25 olfactory receptor genes, four T cell receptor genes and nine other genes. The fixation of HSPs has been too rare over FG-4592 price the past 6-7 Myr to account for species differences between humans and chimpanzees.”
“In this article, one cast technique to fabricate 20-40 wt %AgNO3-doped polyvinyl alcohol (PVA) composite films of which electrical resistance sharply dropped (4-5 order) in a certain temperature range was reported. The phase, structure thermal, and electrical resistivity properties of films at different heat treatment temperatures were studied by X-ray diffraction (XRD), scanning electrical microscopy (SEM) and differential scanning calorimetry (DSC). The results showed that all the AgNO3 (20-40 wt %) doped
PVA films presented an exothermic peak at 182 degrees C. And the temperature Nec-1s inhibitor of exothermic peak kept constant for various contents of AgNO3. Meanwhile, the phase composition of the films was greatly affected by the heat treatment temperature. Ag particles were generated during the heat treatment process, and the content of Ag particles increased with increasing the temperature. The resistivity of PVA/AgNO3 films decreased with increasing the temperature. And a sharp decrease appeared at 155-165 degrees C due to the generation and contact of a mass of Ag particles at this temperature. The thermal-electrical results suggested the applicability of these materials in temperature sensor, for example, critical temperature resistor thermistor. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 122: 813-818, 2011″
“Magnetization reversal and the effect of patterning have been investigated in full-film and dot arrays of Co/Pd multilayers, using the first-order reversal curve and scanning electron microscopy with polarization analysis techniques.
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