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101.
Dr. Erika Leitel Dr. Wolfgang Hüubner Anita Rommel Dr. sc. Karsten Peter Thiessen 《工业材料与腐蚀》1985,36(2):79-87
Electrode kinetics of high purity iron in phosphate electrolytes under solid particle impact (Simulation of erosion corrosion) Erosion-corrosion of high purity iron was simulated by means of a vibration cell in a neutral phosphate electrolyte. The investigations were carried out to explain the initiation processes of this type of corrosion. The results confirm the general conception of the central role of reaction layer destruction in erosion-corrosion processes. Under these conditions a qualitative change in reaction layer formation occur. By solid impact the layers are destroyed locally and so conditions of pit nucleation exist. The destruction of the layers depends on the action of shear forces resulting from tensile or compressive strains. 相似文献
102.
Frans M.M. Snijkers Anita Buekenhoudt Jan J. Luyten Jos Cooymans Myrjam Mertens 《Scripta materialia》2004,51(12):1129-1134
Yttria doped Ba-hafnates were prepared by solid state route and the proton conductivity of pressed samples of yttria doped barium hafnate was determined with impedance spectroscopy. The results are compared with existing data for cerates and zirconates. It was found that Ba-hafnates show a level of proton conduction that is comparable to that of doped Ba-zirconates at low and slightly higher at high temperatures. This is in agreement with the prediction based on the ionic radius of the tetravalent atom in the perovskite. 相似文献
103.
为了了解ENIG化学变化对浸金耐蚀性的形响,探讨了浸金电镀溶液的pH值和化学性质与结果所得到的浸金层的耐蚀性之间的关系。 相似文献
104.
Hobfoll Stevan E.; Jackson Anita P.; Lavin Justin; Johnson Robert J.; Schr?der Kersten E. E. 《Canadian Metallurgical Quarterly》2002,70(4):950
A primary prevention, behavioral intervention designed to reduce HIV risk behavior was tested in a randomized, controlled trial with single, inner-city women. A total of 935 women were randomly assigned to 1 of 3 conditions: a small group, 6-session communally oriented HIV prevention intervention; a yoked general health promotion intervention control; or a standard care control. Both interventions involved the interactive use of videotapes by live group leaders. The HIV prevention intervention, in particular, resulted in significant positive effects on self-reported and behaviorally assessed safer-sex behavior. Women in the HIV prevention group showed reduced point prevalences of medically tested sexually transmitted diseases at follow-up in some comparisons. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
105.
Anita M. Bionk John H.L. Van Den Bercken Eric E.J. De Bruyn 《Computers in human behavior》1996,12(4):567-586
DYSLEXPERT is a knowledge-based system designed to support clinicians in the diagnosis of dyslexia. The system answers four questions that usually have to be addressed by human clinicians: Which areas of psychological functioning appear to be problematic? What tests would provide the relevant information? Are we actually dealing with dyslexia? How can the reading and spelling problems best be alleviated? In the present paper, we compare the competence of the program to the performance of four experienced diagnosticians on 20 cases of dyslexia and 20 cases of nondyslexia.The evaluation of the competence of DYSLEXPERT was based on three sets of data: the original case work, a reanalysis of the cases, and the results produced by DYSLEXPERT. The agreement between human and computer performance was measured using Cohen's kappa and Dice's measure of specific agreement. Statistical testing revealed the agreement between DYSLEXPERT and the reanalysis to be similar to the agreement between the original case work and the reanalysis. 相似文献
106.
Gorji Marzban Anita Herndl Sara Pietrozotto Srijib Banerjee Christian Obinger Fatemeh Maghuly Rainer Hahn Donato Boscia Hermann Katinger Margit Laimer 《Food chemistry》2009
Mal d 2, a thaumatin-like protein from apple was previously described to react to almost 75% of the apple allergic patient sera. Based on the molecular structure of this protein, the present study focused on the conformational stability of Mal d 2 in relation to in vitro IgE-binding under different physico-chemical conditions and proteolysis. The structural integrity of Mal d 2 was monitored using SDS–PAGE, Western blotting using polyclonal antibodies and human sera, fluorescence spectrometry and circular dichroism. Results confirmed the stability of Mal d 2. However, Mal d 2 was reactive to human serum IgEs mainly after reduction of disulphide bridges fixing the α-helical domain II. Contrary to previous assumptions, the current findings suggest that the allergenic epitopes of Mal d 2 are hidden inside the protein structure and none of the rigorous conditions applied in industrial juice processing or digestive proteolysis enhance or reduce the binding to IgE molecules. 相似文献
107.
Hobfoll Stevan E.; Jackson Anita P.; Lavin Justin; Britton Paula J.; Shepherd James B. 《Canadian Metallurgical Quarterly》1993,12(6):481
Sexual behavior, knowledge of HIV transmission and prevention, perceived risk of AIDS, and safer sex behavior were studied in a sample of 289 single, pregnant, inner-city women. African-American and European-American women were equally represented. Women had poor AIDS knowledge. Sexual behavior placed women at risk for HIV infection due to the lack of condom or spermicide use. Women did not perceive themselves at risk for the AIDS virus, although they did recognize that heterosexuals were at risk. Their lack of risk perception was partly based on their having a single sexual partner. They did not regard their partner's current or past behavior as placing them at risk. Recommendations for intervention and cultural differences are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
108.
Cunningham Michael R.; Wong Dennis T.; Barbee Anita P. 《Canadian Metallurgical Quarterly》1994,79(5):643
Three experiments examined impression-management responses to the Reid Report Integrity Attitude Inventory. Ss encouraged to score high on the honesty test attained higher scores than a control group, but no higher than a group of job applicants. Study 2 offered money for high scores, and provided information to use concerning the 1st, 2nd, or both factors of the Reid Report. Ss in the 3 information conditions scored higher than those in a control condition, but again were no higher than job applicants. In a 3rd study, Ss were asked to respond to the Reid Report and to several other measures as if they seriously wanted a job. After the test, each subject was overpaid for the participation. Reid Report scores were significantly correlated with returning vs retaining the money. These results suggest that integrity tests possess predictive validity despite some impression-management response distortion. Relations with other personality measures also are presented. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
109.
Elinor Torres Jos F. Pereira Anita M. Brinker David S. Seigler 《Journal of the science of food and agriculture》1988,42(2):149-156
Heating of intact cassava leaves causes liberation of hydrogen cyanide. This phenomenon appears to be caused by β-glucosidase-catalysed decomposition of the cyanogenic glycosides linamarin and lotaustralin. Because of these losses, many previously determined values for total nitrogen in cassava (and other cyanogenic plants) are probably in error as plant materials used for Kjeldahl determinations are often dried at 70–90°C. Liberation of cyanide from intact cassava leaves by heating at 80°C is more complete than liberation by the homogenisation methods commonly used. Homogenisation of cassava leaf tissues with liquid nitrogen or dry ice gives somewhat lower values, and these materials are often not readily available in areas where cassava is studied. The basis of a relatively simple procedure for the isolation of hydrogen cyanide from cassava leaves is suggested. 相似文献
110.
Woolfolk Anita E.; Woolfolk Robert L.; Wilson G. Terence 《Canadian Metallurgical Quarterly》1977,45(2):184
Investigated the effect of presentation labels upon Ss' evaluation of behavior modification in 2 experiments with a total of 194 college students. In Exp I, 2 groups of undergraduates were shown identical videotapes of a teacher using reinforcement methods. In the 1st group the videotape was described as illustrative of "behavior modification," whereas the tape was labeled as "humanistic education" in the 2nd group. A questionnaire that required the Ss to evaluate the teacher and the lesson was then administered. Identical procedures were repeated in Exp II, which studied graduate students. For both samples, when the events on the videotape were described as illustrative of humanistic education, (a) the teacher received significantly more favorable ratings and (b) the teaching method was seen as significantly more likely to promote academic learning and emotional growth. (16 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献