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In general, the design work with traditional measures is done by hand, which cannot meet the needs of the technology and manufacture. So the author has developed a CAD hydraulic design software fit for lower specific speed axial flow runner, which is easily operated by users.The main research work of this paper is as follows:1 Analyzing the main reason of axial flow power station cannot work well under littler volume of flow in some season and putting forward an improving scheme, pointing out the characters of design under abnormal factors.2 Combined with the development of the industry in our country, the abnormal hydraulic design method of propeller turbine is discussed based on present literature, data and experiment results.3 Guided by the design method of software engineering, a suit of hydraulic design software of Lower Specific Speed Axial Flow Runner is programmed by the object-oriented programming language Visual Basic and a straightforward, concise and standard Windows human-computer dialogue interface is designed for the system, which makes the operation of the system very convenient.4 ActiveX Automation technology is adopted as the interface with AutoCAD and the hydraulic drawings are edited, modified by AutoCAD until hydraulic model drawings according with the demand of engineering practice are output.5 To resolve practice problem, the author has designed a lower specific speed axial flow runner for Duowa Power Station through an example.
论文的主要内容有:1 深入分析很多轴流定桨式水电站枯水季节小流量下不能发电的主要原因,提出减容改造方案,并指出超常规条件下的改造设计特点。2 结合国情及行业发展需要,参考现有资料、文献和前人的研究成果,进行低比转速轴流式转轮叶片水力设计方法的研究,对轴流式转轮叶片的奇点分布法水力设计进行了全面的探索,结合现代计算机技术,找到了一种针对特殊条件的轴流式转轮叶片水力设计方法。3 仔细比较多种AutoCAD二次开发工具后,结合本课题的特点,选用Visual Basic语言,综合应用软件工程的设计思想,进行低比转速轴流式转轮叶片水力设计软件的编制,为系统设计了直观、简洁和标准的Windows人机对话界面,便于用户操作;编程时在考虑到设计条件特殊性的同时,尽量做到程序的通用性,使之可用于解决同一类问题;另外,大部分程序还可移植到普通轴流式转轮叶片水力设计中,具有良好的适应性。4 利用ActiveX Automation技术与AutoCAD接口,对AutoCAD进行二次开发,在AutoCAD下实现水力图的自动生成和编辑,直至输出符合实际工程要求的木模图。5 通过算例,为多哇水电站设计了一个低比转速轴流定桨式转轮,解决其在枯水期小流量下不能发电的问题。
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This article takes the Marxism Humanics and Western Stimulation theory as its foundation stone .It also takes the Marxism Humanics as its guide thought and philosophical foundation which constitute the Stimulation Management Mode . Through reflecting on the traditional Stimulation Mode and studying the logical foundation of stimulation of teachers in elementary and middle schools ,we deeply reflect on the Tradition Stimulation Mode and its thought and attribute the problem of stimulation strategy to the loss of the humanity and the pinch of the value pursuit .From the reality of Chinese culture and modern school culture .we use the essential thought in the Western Stimulation Theory for reference and set a definition on Stimulation from the philosophical view ,that is ,the subject takes the corresponding stimulation mode according to the understanding of the stimulated object needs ,acts on the motivation ,purpose and action of the stimulated and consequently satisfy the purpose of the subject .
本文以马克思人学理论和西方激励理论为理论基石,以马克思人学思想作为建构激励管理模式的指导思想和哲学基础,通过对传统激励模式的反思,通过对中小学教师激励的逻辑基础的研究和外在因素的研究,对传统教师激励模式及思想做深刻反思,将传统中小学教师激励策略问题归结为人文性的缺失和价值追求的匮乏,并从中国文化、现代学校文化实际出发,借鉴西方激励理论中的精华思想,从哲学的视角定义了激励的内涵是行为主体根据对激励对象需要的理解而采取的相应的刺激方式,作用于被激励对象的动机、目的、行为,从而满足行为主体的目的。
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According to the complex structure of AdSS and its substrate IMP as well as the optimized stable conformation of natural inhibitors, the interaction mode between AdSS and its inhibitors was studied with molecular docking, mechanical optimization and molecular dynamics simulation methods. These results show that the phosphate group and the hydantoin ring of the inhibitors form the pharmacophore model.
基于腺苷酸琥珀酸合成酶与其底物肌苷单磷酸复合物的晶体结构以及获得的天然抑制剂衍生物稳定构象,利用分子对接、分子力学优化及常温分子动力学模拟对AdSS酶与天然抑制剂及其衍生物的相互作用复合物结构进行理论预测。
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The liquid metal pressure and the tow speed were calculated according to the hydromechanics model as well as the heat transfer model. The results indicate that the technology parameter is appropriate,and the ?
结果表明:根据模型确定的参数是合适的,并在铸型温度为690~780℃、冷却距离为50mm、牵引速度为1.1mm/s的工艺条件下获得了!
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Constructed wetlands are artificial wastewater treatment systems which contain physical, chemical and biological process in the ecosystem, and treat wastewater efficiently according to filtration, absorption, deposition, hydronium exchange, as well as microbe decomposition.
人工湿地是,是由人工建造、监督和控制的,它充分利用湿地系统净化污水能力的特点,利用生态系统中的物理、化学和生物的三重协同作用,通过过滤、吸附、沉淀、离子交换、植物吸收和微生物分解来实现对污水的高效净化。
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According to the differences in chemical and structural characters of WO42- and MoS42- the actions of them to separator molecular such as bonding, hydrophile/hydrophobia and geometry are discussed by using mineral flotation as reference.
以相似元素钨和钼的分离为例,根据WO42-和MoS42-的结构特征,从价键因素、亲水-疏水因素、几何因素等方面分析了它们与吸附剂的作用,成功选择了有色金属硫化物作为选择性吸附剂,实现钨和钼的高效分离,并进一步探讨了吸附剂的改性优化和其它类似元素的深度分离问题。
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According to the properties of acrylic acid series polymer of scale inhibition. A kind of amphiprotic tercopolymer of acrylic acid, acrylamide and dimethyldiallylammonium chloride is synthesised, with water as solvent, persulfate and hypophosphate as initiator. Through the tests, the copolymer can show the good scale inhibiting effect and bactericidal action, and become a multifunctional scale inhibition.
本研究根据丙烯酸聚合物阻垢剂的特点,使用过硫酸铵(NH_4_2S_2O_8、次亚磷酸钠(Na_2PO_3)构成的氧化——还原型引发剂,水为溶剂,合成了新型可用于处理工业循环冷却水的丙烯酸—丙烯酰胺—二甲基二烯丙基氯化铵两性型三元共聚物。
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The rule which according to the liquid static pressure formula, the ideal gas equation of state as well as the liquid storage surveys the fluid position, the density, Shui Gaohe the temperature.
根据液体静压计算公式、理想气体状态方程以及液体存储的规律来测量液位、密度、水高和温度。
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According to China\'s industry ministry, as of this month about 30% of the nation\'s aluminum production capacity is idle, as is 20% of cement and plate-glass capacity and 70% of semiconductor production.
据中国工业和信息化部的数据,截至本月,中国约有30%的铝材、20%的水泥和平板玻璃,以及70%的半导体产能是闲置的。
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From the research that drug expenditure affective facors modol according to the drug consuming of three cities,we find that the quantity and introduce new drug is as important facors as the price factor,so we can\'t consider the price policies only,but to igore controling drug consuming quantity.
研究中还发现如果没有人监督医生的诱导需求行为,病人因无法识别医生的诱导需求而不加选择地雇用医生,则无论病人给医生多高的工资,也无法控制医生诱导需求的行为。
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And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.
同时,论述了一体化管理体系构建中的几个主要问题,包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。
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Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.
运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。
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If you're huffing and puffing at any point during the run, slow down and make sure you can take deep breathes.
如果你任何时候在跑步过程中气喘如牛,降低速度并且确保你能够深呼吸。