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1.
2.
R Beyer H Burghardt R Reich E Thomas T Gessner D.R.T Zahn 《Microelectronics Reliability》1998,38(2):144
Thin SiO2 and SiOxNy layers were grown on silicon using Rapid Thermal Processing (RTP) in either O2 or N2O ambient. Subsequent annealing or nitridation was performed in order to improve the electrical stability. The composition of the films, in particular the incorporation of nitrogen and hydrogen, has been studied. We obtained the distribution of states at the Si/insulator interface through the evaluation of CV measurements and investigated the charge trapping in the layers analysing the voltage–time behaviour during Fowler–Nordheim constant current injection. Furthermore, assuming a trap assisted tunneling mechanism, the influence of near interface trap states on the current voltage characteristic was used to derive an effective insulator state distribution. 相似文献
3.
Discusses the use of personality as a predictor in personnel selection. Recent data has suggested that personality measures (PRMs) are related to performance criteria that are unrelated to cognitive ability when the traits measured are conceptually related to these criteria. It seems that PRMs may predict job performance dimensions that cannot be predicted by cognitive ability measures. The use of PRMs in personnel selection may be warranted when a careful job analysis is undertaken to determine which performance dimensions may be related to personality traits. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
4.
C Oddoux E Reich F Axelrod A Blumenfeld C Maayan S Slaugenhaupt J Gusella H Ostrer 《Canadian Metallurgical Quarterly》1995,15(9):817-826
Familial dysautonomia (FD), a recessively inherited disease, has been mapped to chromosome 9q31. Highly polymorphic dinucleotide repeat markers flanking the genetic locus and at the same genetic location have been identified. We describe the prenatal diagnosis of FD using linkage and linkage disequilibrium analyses with these markers. Twelve families were analysed for informativeness and of these, seven went on to have prenatal testing (a total of eight fetuses tested). All of these fetuses were predicted to be heterozygous unaffected (FD carriers). Seven fetuses have come to term and are normal. In the absence of a recombinant proband, a panel of three proximal and three distal markers is sufficient to provide informative flanking markers and an 87-96 per cent likelihood of a highly predictive test. In an additional family at 1:4 risk for FD, no DNA was available from the propositus. This family was analysed using linkage disequilibrium to the #18 allele of the tightly linked marker D9S58 in conjunction with linkage analysis using data from two unaffected children. Prenatal diagnosis in this family indicated an affected fetus. 相似文献
5.
A. Krell T. Reich A. Beger G. A. Gogotsi Y. L. Groushevsky 《Journal of Materials Science》1991,26(17):4637-4642
At room temperature, SiO2 additions may increase the fracture toughness, K
IC, by diminishing the tetragonal phase contents to about 50%, but with ground surfaces the influence on strength is small.
A pronounced decrease in strength is observed with rising temperature in the high toughness region from 20°C to M
s, the starting temperature for martensitic transformation. Beyond M
s at lower toughness, the strength behaviour is very similar to nontransforming alumina ceramics, and an even modest increase
of the silicate concentration intensively promotes propagation-controlled failure in the brittle creep region (> 900°C) and
inelastic deformation. With less than 1% amorphous grain boundary phases, damage-free superplasticity is restricted to small
strains of less than 10%. The significance of high-temperature data for tool applications is considered by cutting tests with
high feeding rates. 相似文献
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It was for the first time that of the fifth year of monitoring of Plantago lanceolata L., reproduced within the thirty-kilometer zone of Chernobyl NPP disaster, the authors discovered high incidence of seedlings with various morphological abnormalities. It is suggested that the damages observed are related to the cumulative effect of radiation. 相似文献
9.
W. Klas U. Herpers M. Reich R. Michel R. Droste R. Holm E.-M. Horn G. Müller 《工业材料与腐蚀》1991,42(11):570-575
The radiotracer technique as a means to investigate the corrosion of zirconium, tantalum, and a Ta-40Nb alloy in fluoride containing azeotropic nitric acid Zirconium and tantalum as well as the tantalum 40% niobium alloy are of considerable technical importance due to their high corrosion resistance against numerous corrosive media. With respect to corrosion testing in analytically pure azeotropic nitric acid in the temperature range between 20 and 121°C, corrosion rates were determined for zirconium: 7 · 10?6 to 5 · 10?4 mm/y, for tantalum: 10?8 to 4 · 10?6 mm/y, and for the Ta-40Nb alloy: 2 · 10?7 to 8 · 10?6 mm/y [1]. These corrosion rates will be markedly increased by adding small amounts of fluorides or by fluoride impurities. The radiotracer method after neutron activation was applied to determine the corrosion rates in azeotropic fluoride containing nitric acid. Even minute additions of fluorides strongly affect the corrosion resistance of zirconium. In the range between 0.15 and 10 ppm F? and at a temperature of 108°C, corrosion rates between 5.3 · 10?3 and 3.1 mm/y were measured. It was impossible to establish a limit for the fluoride concentration, below which the corrosion rate of zirconium will not be adversely influenced. The corrosion rates of tantalum and the Ta-40Nb alloy are considerably increasing above a fluoride concentration of 10 ppm. The highest corrosion rates measured were between 8.4 · 10?3 mm/y at 50°C/280 ppm F? and 1.4 · 10?2 mm/y at 110°C/320 ppm F?. Within the range of this investigation, the corrosion resistance of tantalum was higher than that of the Ta-40Nb alloy by one order of magnitude. The corrosion resistance of zirconium and tantalum was not influenced by any treatment of the samples before testing. 相似文献
10.
A meta-analysis was performed on 18 studies in which a cognitive–behavioral therapy was compared with the same therapy supplemented by hypnosis. The results indicated that the addition of hypnosis substantially enhanced treatment outcome, so that the average client receiving cognitive–behavioral hypnotherapy showed greater improvement than at least 70% of clients receiving nonhypnotic treatment. Effects seemed particularly pronounced for treatments of obesity, especially at long-term follow-up, indicating that unlike those in nonhypnotic treatment, clients to whom hypnotic inductions had been administered continued to lose weight after treatment ended. These results were particularly striking because of the few procedural differences between the hypnotic and nonhypnotic treatments. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献