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1.
M. E. özsan D. R. Johnson M. Sadeghi D. Sivapathasundaram G. Goodlet M. J. Furlong L. M. Peter A. A. Shingleton 《Journal of Materials Science: Materials in Electronics》1996,7(2):119-125
Thin CdS films have been grown by chemical bath (CdCl2, thiourea, ammonia) deposition (CBD) on SnO2 (TO)-coated glass substrate for use as window materials in CdS/CdTe solar cells. High-resolution transmission electron microscopy revealed grains with an average size of 10 nm. The structure was predominantly hexagonal with a high density of stacking faults. The film crystallinity improved with annealing in air. Annealing in a CdCl2 flux increased the grain size considerably and reduced the density of stacking faults. The optical transmission of the as-deposited films indicated a band gap energy of 2.41 eV. Annealing in air reduced the band gap by 0.1 eV. Annealing in CdCl2 led to a sharper optical absorption edge that remained at 2.41 eV. Similar band gap values were obtained by photocurrent spectroscopy and electroabsorption spectroscopy (EEA) using an electrolyte contact. EEA spectra were broad for the as-deposited and air-annealed samples, but narrower for the CdCl2-annealed films, reflecting the reduction in stacking fault density. Donor densities of ca. 1017 cm –3 were derived from the film/electrolyte junction capacitance. 相似文献
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Atkinson Donald R.; Furlong Michael J.; Poston W. Carlos 《Canadian Metallurgical Quarterly》1986,33(3):326
Examined 128 Black college students' (aged 17–52 yrs) preferences for salient counselor characteristics. Ss were asked to express their preference for counselors similar or dissimilar to them across 8 counselor characteristics (ethnicity, sex, religion, educational background, socioeconomic background, attitudes and values, personality, and age) identified from previous research. A total of 120 paired comparisons were generated to compare preferences for the 16 similar and dissimilar counselor characteristics. Results reveal that Ss expressed preferences for counselors who, in comparison to themselves, were more educated, had similar attitudes and values, were older, and had similar personalities; these characteristics were more important to the Ss than the counselor's race and ethnicity. Additional analysis of within-group preference profiles revealed no consistent difference by commitment to Afro-American culture, sex, or previous counseling experience. (24 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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Surveyed 70 26–42 yr old recipients of junior-level academic appointments in American Psychological Association (APA)-approved and nonapproved counseling psychology programs between September 1978 and September 1983 regarding demographic information, professional productivity, and personal contact networks. Results indicate that the successful applicant for an academic position was in his/her 30's, had a degree from an APA-approved program, and had completed a predoctoral internship. This candidate also had teaching experience and had articles published. Personal contacts were a salient factor in securing appointments in the approved programs. (11 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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Case study of attempts to enact self service tobacco display ordinances: a tale of three communities
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OBJECTIVE: To examine self service tobacco displays (SSTDs) and youth retail tobacco access by comparing longitudinal illegal tobacco sales rates in three communities in Santa Barbara County, California, that considered or implemented ordinances banning SSTDs. A confirmatory survey was also conducted to substantiate the longitudinal data. DESIGN: A longitudinal case study design was utilised. Five undercover tobacco buys were conducted between 1994 and 1997 (n = 332). In addition, one confirmatory survey was conducted in a geographically separated area, which had no ordinances banning SSTDs (n = 57). RESULTS: Decreases in youth buy rates were reported in all three communities. Most notably, the first city to enact a SSTD ban, Carpinteria, achieved a 0% sales rate, which was maintained throughout the study period. In contrast, Santa Barbara and Goleta experienced considerable drops in their illegal sales rates, but neither community obtained results as dramatic as those found in Carpinteria. The confirmatory survey showed that 32.1% of stores with SSTDs sold cigarettes to minors; this compares to a sales rate of 3.4% in stores without SSTDs (chi(2) (1) = 8.11, p = 0.004). CONCLUSIONS: Efforts to enact self service bans are likely to meet with retail and tobacco industry opposition, as was the case in this study's three communities. The process of community debate, resultant publicity surrounding the issue, and enactment of SSTD ordinances may serve to not only increase merchant awareness of youth tobacco laws and their penalties but also may contribute to reduced youth cigarette sales rates. Implications and limitations of the findings are discussed. 相似文献
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WF Li C Matthews CM Disteche LG Costa CE Furlong 《Canadian Metallurgical Quarterly》1997,7(2):137-144
PURPOSE: To retrospectively examine the optic disc photographs of a glaucoma population for optic disc haemorrhages, vascular occlusions and vascular abnormalities. METHODS: The optic disc photographs of 906 eyes of glaucoma and suspect glaucoma patients were examined. Optic disc photographs were taken annually, where possible, with the follow-up period varying between 1 and 14 years duration (mean, 2.89). Glaucoma patients are regularly reviewed every 4-6 months and glaucoma suspects every 1-2 years, depending on the ophthalmologist. Low-tension glaucoma patients were reviewed more frequently (mean, every 2.6 months). The results of the findings were compared to a control group of 39 subjects with a mean follow-up period of 7 years, using Fisher's exact test. RESULTS: It was found that during the period under review, 7.4% (n = 67) of eyes had optic disc haemorrhages. The highest frequency of optic disc haemorrhages (37.5%) was found in the low tension glaucoma group (P = 0.0001) followed by 11% of primary open-angle glaucoma eyes (P = 0.03). In the normal group there were three eyes with optic disc haemorrhages and one with a disc collateral, which constitutes 5.1% vascular changes in this sub-group. Of the study eyes 2.8% had central retinal vein occlusions, 1.3% branch vein occlusion, 1.2% disc vessel abnormalities (loops) and 1.1% disc collaterals. Discrete nerve fibre layer haemorrhages and microaneurysms were found in 0.8% and 1.8% of eyes, respectively. CONCLUSIONS: A total of 16.8% of the eyes observed in this study had either disc haemorrhages or vascular changes. The underlying trend of vascular and haemorrhagic changes in glaucoma are demonstrated in this sample, which is in general agreement with previous studies. The high percentage of optic disc haemorrhages in low tension glaucoma is highlighted. The presence of microaneurysms and nerve fibre layer haemorrhages is interesting but of unknown significance. 相似文献
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Rate data on liquefaction of a series of low pyrite bituminous coals in tetralin at 400 °C have been measured. Rates of disappearance of coal and rates of formation of oils, asphaltenes, and preasphaltenes have been determined, and kinetic parameters for coal disappearance calculated based on a second-order rate expression. The usefulness of kinetic rate constants as sensitive reactivity ranking factors is demonstrated. 相似文献
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JA Palmore MJ Furlong FX Buchmeier IH Park LM Souder 《Canadian Metallurgical Quarterly》1976,7(12):349-356
The characteristics of Korean family planning opinion leaders are assessed through a secondary analysis of the 1971 national survey conducted by the Korean Institute for Research in the Behavioral Sciences. In effect, what characterized Korean family planning opinion leaders was a rather national and democratic model. Those who had tried methods, discussed them, and knew a lot about them assumed leadership roles more than others. Place of residence, education, and other such variables mattered relatively little unless a woman had credibility imparted by actual use and knowledge imparted by use or discussions with family planning professionals. 相似文献