一种高频高跨导JFET的研制     

吴小华  汤实成 《江西教育学院学报》1994,15(5):19-24

本文研究了一种硅高频高跨导JFET的设计和制造技术，测量结果表明，所研制的器件性能基本达。到了国际上先进公司同类产品的指标参数。  相似文献   

英汉颜色潜在意义的对比     

唐云孝 《铜仁学院学报》2003,5(Z1):81-83

不同的文化背景下,颜色所代表的潜在意义也不相同,有时甚至是完全相反的.具有不同文化背景的人用非本民族语言进行交际时,若不对此进行区分,极易造成误解.  相似文献   

图书馆组织氛围优化探索——基于南京农业大学图书馆的案例分析     

唐惠燕  倪峰  陈蓉蓉 《图书情报工作》2016,60(12):87-94

[目的/意义] 组织氛围优化有助于提升馆员对图书馆的满意度和馆员的工作热情。案例分析有助于在更多图书馆推广组织氛围测评,进而为管理优化决策提供支持。[方法/过程] 南京农业大学图书馆借鉴美国图书馆界开展ClimateQUAL^TM测评的做法,在对ClimateQUAL^TM量表进行本地化改造的基础上,分别于2011和2015年对图书馆组织氛围开展量化测评,通过分析数据寻找存在的问题并不断优化管理方案。历经4年多时间,完成图书馆组织氛围的优化探索过程。[结果/结论] 前后两次测评数据对比显示,2015年得分较2011年整体有所提升,同时集思广益、创新、激励竞争、用户服务和团队合作5个指标得分明显提升,说明组织氛围测评的必要性和管理创新举措的有效性。  相似文献   

初中化学解题推理思维的案例分析     

许燕红  文庆城  唐力 《化学教学》2005,(6):55-57

在初中化学教学阶段,由于受年龄和身心发展的影响,学生思维的运作形式主要是具体形象的推理思维,包括演绎推理和归纳推理,本文结合具体的案例,从定性推理思维和定量推理思维两个方面加以分析。1 定性推理思维及其案例分析定性推理是确定研究对象具有某种属性的推理  相似文献   

The effect of 14 weeks of vitamin D3 supplementation on antimicrobial peptides and proteins in athletes     

Cheng-Shiun He  William D. Fraser  Jonathan Tang  Kirsty Brown  Stephen Renwick  Jay Rudland-Thomas 《Journal of sports sciences》2016,34(1):67-74

Heavy training is associated with increased respiratory infection risk and antimicrobial proteins are important in defence against oral and respiratory tract infections. We examined the effect of 14 weeks of vitamin D₃ supplementation (5000 IU/day) on the resting plasma cathelicidin concentration and the salivary secretion rates of secretory immunoglobulin A (SIgA), cathelicidin, lactoferrin and lysozyme in athletes during a winter training period. Blood and saliva were obtained at the start of the study from 39 healthy men who were randomly allocated to vitamin D₃ supplement or placebo. Blood samples were also collected at the end of the study; saliva samples were collected after 7 and 14 weeks. Plasma total 25(OH)D concentration increased by 130% in the vitamin D₃ group and decreased by 43% in the placebo group (both P = 0.001). The percentage change of plasma cathelicidin concentration in the vitamin D₃ group was higher than in the placebo group (P = 0.025). Only in the vitamin D₃ group, the saliva SIgA and cathelicidin secretion rates increased over time (both P = 0.03). A daily 5000 IU vitamin D₃ supplement has a beneficial effect in up-regulating the expression of SIgA and cathelicidin in athletes during a winter training period, which could improve resistance to respiratory infections.  相似文献   

硝酸法处理废硬质合金回收金属钴和碳化钨     

汤青云  段冬平 《湖南城市学院学报》1996,(6)

介绍了用硝酸法处理废硬质合金，回收金属钴和碳化钨的方法，并且设计了对废气氛氧化物的处理方法，消除了对环境的污染。是一种工艺简单，投资省，成本低，能耗少，污染小的回收工艺。  相似文献   

中职教师在职攻读硕士学位问题探讨   总被引：4，自引：0，他引：4  

饶异伦  唐玉凤 《职业技术教育》2006,27(7):30-32

近年来,中职教师在职攻读硕士学位的过程中,出现了许多不尽人意之处,如学员学前背景、学前动机、学中态度、学中效果、学后质量等差异较大,影响了培养质量。为此,有必要加强与学员所在单位的联系与合作;加强对学员的管理与规范;以人为本,全面提高学员综合素质和学术价值观;优化导师的整体指导资源,提升导师小组的指导能力。  相似文献   

Visualization of structured packing with laser induced fluorescence technique: Two-dimensional measurement of liquid concentration distribution     

刘伯潭  申言同  张会书  刘春江  唐忠利  袁希钢 《天津大学学报(英文版)》2016,22(5):466-472

A method of using laser induced fluorescence(LIF)technique was applied to two-dimensional measurement of the liquid concentration distribution in the 250Y structured packing sheet. The experimental structured packing sheet was made of perspex so that the laser could pass through it. The visualization of the distribution of the liquid concentration in the structured packing sheet was realized. The calibration of the thickness and liquid concentration was carried out firstly and the regression formula I=kcd was acquired, in which concentration c and the liquid film thickness d were both considered. Then the liquid feed of uniform tracer(rhodamine)concentration entered the perspex structured packing from the top under different spraying densities. The corresponding thickness of liquid film on the packing was calculated. Finally, tracer(rhodamine)with a high concentration was injected only at one fixed point of the structured packing under different spraying densities of the liquid. With the known liquid film thickness, the concentration distribution of the tracer can be calculated inside the structured packing sheet.  相似文献   

英汉词汇的民族文化特征和语用差异     

唐芸 《毕节学院学报》2001,19(4):38-39

词汇是语言的主要构素;词汇不仅有其字面意义,还有其内涵意义。在语言中,词汇和语义最能充分、生动地反映出生活的不同侧面。在跨文化交际中,词汇在不同的语境和不同的历史条件下会表现出不同的内涵和语用差异,这既反映出不同的民族文化,也反映出词汇在不同民族文化中特有的文化内涵。  相似文献   

高等教育大众化和校园数字化对教学模式改革影响的研究     

黄家寅  汤智慧 《高等理科教育》2006,(2):115-118

本文就高等教育大众化和校园数字化对大学理念、教育要素和教学模式的冲击进行了探讨,对新形势下建立新型教学模式的必要性和可能性进行了论述。  相似文献