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吴英华 《大科技．科学之谜》2014,(3):139-140
抗旱防汛工作是人类发挥主观能动性,改善自然环境、抗击灾害影响的一项系统工程。在社会主义发展的新形势下,我国对各地区的抗旱防汛工作要求越来越高。新时期下的抗旱防汛工作要坚持以人为本的原则,要达到人与水和谐发展的目标,在坚持统筹的同时也要做好预防蓄泄的准备防御工作,坚持管理和防御相结合的理念,坚持将工程措施和非工程措施并举,实现抗旱防汛技术的不断发展和创新,以应对全球气候变化带来的挑战。 相似文献
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比较了“茶叶中咖啡因的提取”实验的三种方法，采用了用恒压滴液漏斗代替索氏提取器，实现平衡状态下的连续萃取，追求最佳萃取效果的新方法，比较了间歇萃取与连续萃取实验结果，总结了本实验的成败关键，从“绿色化学”的角度提出了“茶叶中咖啡因的提取”实验方法的选用条件。 相似文献
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随着经济的发展和社会的进步,我国农村饮水安全问题开始受到人们广泛的关注和重视。本文通过对目前农村居民饮水安全问题的调查和分析提出了保障和改善农村饮水安全问题的措施,并对饮水工程管理相关问题进行了阐述,旨在提高农村饮水质量,改善农村居民的生活水平。 相似文献
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To analyze the use of upper limb support during paraplegic walking assisted by functional electrical stimulation （ FES）. a new dynamical measurement for handle reaction vector （HRV） applied by patient to walker was proposed. To avoid the discomfort of direct monitoring, the dynamometer system was designed based on 12 string-gauge bridges instrumented on a standard walker frame. The detailed positions of these bridges were determined according to the deformation distributions of the walker frame under different directional components of HRV. To adapt the system to quantitative and reliable measurement, a redundant-optimized technique was developed in calibration. The measurement accuracy, nonlinearity, and crosstalk of the designed system were investigated, which were better than 1.01%. 2.91%. and 3. 19% respectively. Clinical trials were done with 6 paraplegic subjects using the system and one case was given as the example of actual measurement. All experiment and clinical trial results show that this method is reliable and practicable. 相似文献
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Gait recognition is the key question of functional electrical stimulation (FES) system control for paraplegic walking. A new risk-tendency-graph (RTG) method was proposed to recognize the stability information in FES-assisted walking gait. The main instrument was a specialized walker dynamometer system based on a multi-channel strain-gauge bridge network fixed on the walker frame. During walking process, this system collected the reaction forces between patient's upper extremities and walker and converted them into RTG morphologic curves of dynamic gait stability in temporal and spatial domains. To demonstrate the potential usefulness of RTG, preliminary clinical trials were done with paraplegic patients. The gait stability levels of two walking cases with 4- and 12-week FES training from one subject were quantified (0.43 and 0.19) from the results of temporal and spatial RTG. Relevant instable phases in gait cycle and dangerous inclinations of patient's body during walking process were also brought forward. In conclusion, the new RTG method is practical for distinguishing more useful gait stability information for FES system control. 相似文献
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吴英华 《中国科教创新导刊》2009,(15):131-131
害怕口语交流是当前职校生英语学习普遍存在的现象.调查显示某些职校教学中有一些对英语日常用语、中西文化差异和交际策略方面的教学不够重视,以及学生口语氛围的狭窄和口语学习内容的单一,致使许多学生尽学习了多年的英语,但口语表达能力仅仅限于课本,无法很好地应用与现实生活中,因此还是无法很好地与人进行交流.本文通过对本校部分学生口语学习的调查分析,得知心理障碍是一个很重要的原因,从学习动机、学习兴趣、学习习惯、学习意志和厌学心理等五方面提出疏导对策,以全面提他们的口语水平. 相似文献
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吴英华 《中国科教创新导刊》2009,(12):70-70
英语阅读是英语教学中极为重要的部分。英语教学的目的就是要培养学生独立阅读能力和应用语言的能力。随着社会的发展,英语在各个领域的应用也日益广泛。英语阅读是理解和吸收语言信息最重要的手段。因而英语阅读能力的提高对于学生来讲尤为重要。这就要求在教学中必须注意培养学生英语阅读理解能力。然而,在阅读过程中存在一些不良习惯,针对这些现象,提出一些方法。 相似文献
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高等职业教育是我国教育体系当中重要的组成部分之一,在教育事业改革的过程中,课程思政思路开始在高等职业教育中发挥作用,并得到了越来越多的认可和关注.从公共英语教育实践入手,在保障公共英语教育质量的基础上贯彻落实课程思政目标,是未来高职教学的必然发展方向.在简单介绍课程思政与高职公共英语教学概述的基础上,对课程思政视角下的... 相似文献
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