排序方式: 共有15条查询结果,搜索用时 15 毫秒
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Zheng Gui-lin Guangdong Provincial Research Institute of Water Conservancy Hydro-power Shougouling Shahe Guangzhou P. R. China 《水动力学研究与进展(B辑)》1992,(2)
A newly developed turbulence measurement instrument is introduced in the paper.The transducer of the device is based on the principle of the effect of silicon piezoresistance that isintegrated in a Wheatstone bridge on a pure silicon beam. At one end of the beam, a small lightball is installed as the target forced by the water flow. The other parts are prevented from thewater flow with a sophisticated stainless steel tube. The instrument can be used to measure turbu-lent velocities either in clear Water or in flows bearing hyperconcentration of sediment. It can al-so be used to measure velocities in both glass flume and model experiments as well as in pipe ex-periment by being mounted in a special way. 相似文献
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Conducted an analog study to examine the relative efficacy of 3 treatment strategies in the modification of obsessional thoughts. Of 172 volunteers, 51 Ss were selected by criterion scores on the Leyton Obsessional Inventory, IPAT Anxiety Scale Questionnaire, target person ratings, and willingness to participate. Ss were randomly assigned to 1 of 5 treatment groups: (a) systematic desensitization (SD) and covert sensitization (CS); (b) SD and CS control; (c) SD control and CS; (d) SD control and CS control; and (e) waiting list contol. The effects of treatment were evaluated immediately and 5 wks following treatment on 13 dependent measures (e.g., frequency of ruminations, obsessional producing, and neutral stopping). Depending on the criterion of therapeutic success the combined use of CS and SD was most effective in reducing both anxiety and obsessive ruminations. (French summary) (25 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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Baker Brian; Kazarian Shahe S.; Helmes Edward; Ruckman Maribeth; Tower Nicholas 《Canadian Metallurgical Quarterly》1987,55(5):775
Forty-nine schizophrenic inpatients who were ready for discharge completed the Influential Relationships Questionnaire. This instrument measures respondents' perceptions of three characteristic attitudes (care, overprotection, and criticism) demonstrated by two influential people in the patients' lives. The subjects were followed up for a 9-month period. Readmitted patients (N?=?21) rated the second-most-influential person higher on the Overprotection and Criticism scales and lower on the Care scale than did nonreadmitted patients (N?=?28). The implications of these findings in relation to rehospitalization are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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蒸压高强粉煤灰砖强度高 ,可达到MU20 ,生产工艺技术水平较高 ,能耗低 ,产品广泛用于建筑基础和内外墙体。以年产5000万块蒸压高强粉煤灰砖为例 ,每年可消耗粉煤灰7万t。这将为粉煤灰综合治理提供一条切实可行之路。武汉地区一些生产厂家生产的这种高强粉煤灰砖(MU20以上)现供不应求 ,售价高达0.38~0.40元/块标砖。1原材料要求及配合比(1)粉煤灰应符合JC409 -91《硅酸盐建筑制品用粉煤灰》的要求 ,放射性应符合GB6763的规定。(2)砂可采用各种工业尾矿砂和天然砂 ,但必须符合《硅酸盐砖及蒸压… 相似文献
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