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In this paper, the 3-D finite element relocating mesh method is used to calculate the temperature field and the thermal creep stress field of spillway dam and mid level outlet dam in certain roller compacted concrete gravity dam, sensitivity analysis have been down with different parameters, such as placing temperature, the location of cooling pipe, cooling temperature, time for water supply, ascended-layer of concrete, intermissive time and different placing time, and the commendatory construction scheme have been put forward in such analysis; according by the test result on the two scheme of concrete aggregate combination (basalt as coarse aggregate and limestone as fine aggregate, basalt as coarse aggregate and basalt as fine aggregate), simulation analysis on temperature field and thermal creep stress field of the commendatory construction scheme have been down, and analysis have also been down on temperature field and thermal stress field of the two different aggregate combination, the result indicates that the spillway dam and mid level outlet dam which adopted these two aggregate combination can both satisfy the require of design crack resistance in concrete, furthermore limestone as fine is better than basalt as fine aggregate; the effect of summer water storage and winter water storage on the temperature field and thermal stress field have been analyzed, comparing with winter water storage, in summer water storage scheme the maximum tensile stress at abnormal concrete in upstream fill is decreased by 0.1~0.3MPa and there are no evidence change of the maximum tensile stress at other parts, which indicate that summer water storage is avail for the crack resistance of upstream fill; according to the simulation calculating result and comparing temperature simulation calculating results and temperature controlling measures of some similarity projects both completed and construction, synthesis appraise have been carried to the design temperature controlling measures of dam, and the temperature controlling measures of this project have been brought forward, all these have great reference value on the design of temperature controlling measures and the optimization of the construction scheme.
本文采用三维有限元浮动网格法仿真计算程序,对某碾压混凝土重力坝的溢流坝段和中孔坝段分别进行了三维有限元温度场和温度徐变应力仿真计算分析,对浇筑温度、冷却水管的布置方式、冷却水温、通水时间、浇筑升程和间歇时间、不同开始浇筑日期等参数进行了敏感性分析,在此基础上提出了推荐的施工方案;根据两种骨料方案(玄武岩粗骨料+灰岩细骨料方案;玄武岩粗骨料+玄武岩细骨料方案)的混凝土性能试验研究成果,对推荐的施工方案进行了温度场和温度徐变应力仿真计算,并对比分析了两种不同骨料情况下的温度场和温度应力,结果表明溢流坝段及中孔坝段采用上述两种骨料均能满足混凝土的抗裂设计要求,且灰岩细骨料优于玄武岩细骨料;计算分析了夏季蓄水和冬季蓄水对坝体温度场和温度应力的影响,夏季蓄水方案与冬季蓄水方案相比,坝体上游变态混凝土区域最大拉应力小0.1~0.3MPa,其他部位最大拉应力无明显变化,夏季蓄水对坝体上游面混凝土的抗裂有利;根据仿真计算成果并通过比较国内一些已建和在建的类似工程的温度仿真计算成果及采取的温控措施,对大坝的设计温控措施进行了综合评价,并提出了该工程的温控措施,对温控设计和优化施工方案具有重要参考价值。
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The growth relationship between spectrum parameter and fetch were studied, from which three parameters and overshot phenomenon that appears during wind wave spectra developing were tested, and an equation describing the growth of three-parameter spectra with wind wave was obtained With the equation, the spectra of wind waves were obtained at zero-dimensional fetches of 300, 500, 2000, 5500, 10000, and 15000, and the overshot was described more clearly. However, the overshot does not exist in the whole process of wind wave spectrum development as stated previously by Hasselmann, but in the early stage of the development only, extenuates with wave growth and then disappears when the wave fully grows.
基于已得到的谱参量随风区的变化关系,对三参量风浪频谱以及风浪频谱成长过程中存在的&超射&现象作深入的研究,得到三参量风浪频谱随风区的成长关系:在此基础上,得到无因次风区:300、500、2000、5500、10000、15000下,风浪频谱的谱线,从而直观地描述了风浪频谱成长过程中的&超射&现象,并认为在风浪频谱的成长过程中确实存在着&超射&现象,但是该现象并不如Hasselmann等提出的理论中阐述的那样存在于风浪频谱成长的全过程,而是仅存在于风浪频谱成长的初期。
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Through theoretic reckoning and simulating analyzing, several control strategies for shunt APF were compared and chose ip-iq arithmetic ofthe instantaneous reactive power theory control strategy as the right scheme to produce the instructing current. Based on it, some new control arithmetic was subjoined to suppress the resonance in system and balance the dc side capacitor voltage. Two topologies of main circuit were compared and chose the three-phase voltage-source converter with a split-capacitor as its main circuit structure. The numerical scales of the dc side capacitor and inductance of reactors were calculated. The high-pass filters were designed to eliminate effectively the highfrequency harmonics produced by APF.
通过理论计算和仿真分析,比较了并联型APF的几种控制策略的优点和缺点,从中选择瞬时无功理论控制策略i_p-i_q计算方式为指令电流产生的算法,并在此基础上增加了抑制系统谐振和平衡直流侧电容电压的控制;比较了并联型APF主电路的两种常见形式,从中选择了三相电压型变流器的主电路形式;算出适合该APF的直流侧电容和出线电感的参数;设计出能有效消除APF产生的高次谐波的高通滤波器。
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Secondly,based on the sense of money equilibrium and AO-test technique,this paper recalculates the degree of excess money,and finds that there exits greater degree excess money during 1979 to 2007,but the degree has been dropped greatly since 1990s.
从&超额货币&的内涵来看,其不仅包括执行流通手段职能的货币量,而且还应该包括执行贮藏等各种职能的货币量;第二是采用供求均衡意义上的&超额货币&程度的算法,在变量中引入制度及虚拟经济发展的因素,在方法中采用AO检验法对长期因素做了阶段性划分,并在此基础上运用协整检验法对我国的&超额货币&程度进行了测算,结果发现在1979年-2007年间,我国的确存在着较大规模的超额货币,但是,在20世纪90年代之后,我国的超额货币程度出现了较大幅度的下降;第三是采用阶段分析法对我国超额货币的引致原因进行了实证分析,检验结果显示,货币化、虚拟经济的发展和边际消费倾向的变化都在不同程度上造成了我国超额货币程度发生变化,其中:货币化在1979-1990年间和1991-2007年间对&超额货币&程度的影响方向是相反的,虚拟经济的发展与&超额货币&程度的变动具有反向的影响,货币结构的变化对&超额货币&程度的变动具有正向影响,而居民消费对&超额货币&程度在1979-1990年间无显著影响,但是在1990-2007年间有正向的影响;第四是对&超额货币&程度的变化对我国经济金融的影响进行了理论和实证分析,结果显示:&超额货币&程度的变化对我国的经济增长、物价和汇率的变动都有着较为明显的影响,其中,对物价和汇率的影响是正向的,对经济增长的影响在长短期是不一致的。
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In order to make up the deficiencies of the actual law, the supreme court promulgate a law named the rules about evidences in civil procedure which uses other countries'salutary experiences for reference and integrates the situationg of our country as well as the basic diathesis of the judges. It establish the principle of modern free evaluaion of evidence that rules the judges look through the evidences according to the legal procedures. Other than following occupational moralities, the judges should handle logistic illations and experiences of daily life to estimate probative power and evidential ability of evidences roundly and objectively.
为弥补现行立法上的漏洞与缺陷,在借鉴其他国家的有益经验的基础上,最高人民法院于2001年12月21日颁布的《关于民事诉讼证据的若干规定》从我国的现实国情出发并结合我国法官队伍的基本素质,在证据的审查判断上确立了现代自由心证原则,即审判人员应当依照法定程序,全面、客观地审核证据,依据法律的规定,遵循法官职业道德,运用逻辑推理和日常生活经验,对证据有无证明力和证明力大小独立进行判断,并公开判断的理由和结果。
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Rresults from those studies can be summariazed as follow:(1) A preliminary study no correlationship between the UV-VIS reflection spectrum of tomato fruit surface and the lycopene amount of tomato fruit was undertaken. Based on observation from this study, a damage-free and in-situ detection technique of lycopene amount from tomato was developed with UV-VIS reflection spectroscopy;(2) The geometrical isomers of lycopene were separated successfully on C30-HPLC-PDA-ELSD. The absorption coefficients of Z-isomers were consequently dedermined. The geometrical isomer composition of lycopene could therefore be assessed. Those efforts formed a solid base to identify the natural product from synthetic compound of lycopene;(3) Lycopene resource from the fruit of Autumn oliver was proved to be available for industrial application. An extraction methos of lycopene from the fruit of Autumn oliver by supercritical carbon dioxide was developed at laboratory scale;(4) A method to extract lycopene by supercritical liquid with improved efficiency was developed; Data from this investigation suggested that a proper raw material pre-extraction process was important for a better extraction efficiency;(5) Variation in the geometrical isomer composition of lycopene during its metabolish in rat was assessed. A large amount of Z-isomers were observed. This variation took place in serum;(6) The absorption rate and accumulation in serum of natural lycopene in rat were assessed;(7) Ability to quench singlet oxygen by different geometrical isomers of lycopene was compared;(8) It was detected that whether natural lycopene had functions to regule blood-lipids and LDL antioxidation;(9) A C31 degradation piece of lycopene was found in the prostate gland of rat.
研究结果包括:[1]应用UV-VIS反射光谱法建立了番茄果实中番茄红素含量的无损伤、现场检测技术;[2]应用C30-HPLC-PDA-ELSD技术实现了对番茄红素几何异构体的分离,测定了不同顺式异构体的吸光系数,建立了天然番茄红素几何异构体组成的检测方法,为区分和鉴定人工合成品和天然产物奠定了基础;[3]证实了秋橄榄果实中的番茄红素资源具有工业开发价值,并建立了超临界CO_2萃取的实验室方法;[4]探索了提高番茄红素超临界流体萃取效率的方法,证明了物料前处理对提高萃取效率起了极其重要的作用;[5]观察了番茄红素在大鼠体内几何异构体组成的变化情况,发现了大量顺式异构体的存在,并证实了几何异构体组成在血清中发生了显著变化;[6]测定了天然番茄红素在大鼠体内的吸收率和在大鼠血清中的动态积累规律;[7]比较了不同番茄红素几何异构体淬灭单线态氧的能力;[8]检测了天然番茄红素是否具有调节血脂作用和抗低密度脂蛋白氧化的功能;[9]首次发现大鼠前列腺内存在番茄红素C31降解片段,并证实其仍具有淬灭单线态氧的能力。
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MAX1999EEI Pinout: 8- to 32-bit and 16- to 32-bit word packing options Programmable wait state options: 2 to 31 CCLK Digital audio interface includes six serial ports, two pre- cision clock generators, an input data port, three programmable timers and a signal routing unit Serial ports provide: Six dual data line serial ports that operate at up to 50 Mbits/s for a 200 MHz core on each data line each has a clock, frame sync, and two data lines that can be configured as either a receiver or transmitter pair Left-justified sample pair and I2S support, programmable direction for up to 24 simultaneous receive or transmit channels using two I2S compatible stereo devices per serial port TDM support for telecommunications interfaces including 128 TDM channel support for telephony interfaces such as H.100/H.110 Up to 12 TDM stream support, each with 128 channels per frame Companding selection on a per channel basis in TDM mode Input data port provides an additional input path to the DSP core configurable as either eight channels of I2S or serial data or as seven channels plus a single 20-bit wide syn- chronous parallel data acquisition port Supports receive audio channel data in I2S, left-justified sample pair, or right-justified mode Signal routing unit provides configurable and flexible connections between all DAI components, six serial ports, an input data port, two precision clock generators, three timers, 10 interrupts, six flag inputs, six flag outputs, and 20 SRU I/O pins Serial peripheral interface Master or slave serial boot through SPI Full-duplex operation Master-slave mode multimaster support Open drain outputs Programmable baud rates, clock polarities, and phases 3 Muxed Flag/IRQ lines 1 Muxed Flag/Timer expired line ROM based security features: JTAG access to memory permitted with a 64-bit key Protected memory regions that can be assigned to limit access under program control to sensitive code PLL has a wide variety of software and hardware multi- plier/divider ratios JTAG background telemetry for enhanced emulation features IEEE 1149.1 JTAG standard test access port and on-chip emulation Dual voltage: 3.3 V I/O, 1.2 V core Available in 136-ball BGA and 144-lead LQFP packages Lead free packages are also available
MAX1999EEI引脚说明: 8 - 32位和16 - 32位字包装选择可编程等待状态的选择:2至31个CCLK数字音频接口包括6个串行端口,两个前643时钟发生器,输入数据端口, 3可编程定时器和一个信号路由单元串行端口提供:六双串口数据线,在高达50 Mbps的操作/为200兆赫的每个数据行每个人都有一个时钟,帧同步的核心秒,和两个数据可以作为任何一个接收器或发射器对左对齐和I2S配对样本的支持下,最多可同时接收或传送24个频道,每使用两个系列的I2S兼容立体声设备配置可编程方向线;港口的TDM通信接口,包括支持128个电话接口的TDM的渠道,如H.100/H.110支持多达12个的TDM流的支持下,每帧128个频道每个压缩扩展每通道的基础上选择在TDM模式输入数据端口提供了一个额外的输入路径的DSP核心配置为I2S或串行数据或7加一个20位宽的SYN -异步的并行数据采集接口通道或8通道;支持接收通道I2S音频数据,左对齐样本对,或右对齐模式信号路由单元组件之间提供所有戴配置和灵活的连接,6个串行端口,一个输入数据端口,两个精密时钟发生器,3个定时器,10个中断,六旗投入,产出6个旗,20曼谷南南区域股的I / O管脚串行外设接口的硕士或奴隶通过SPI串行启动全双工运作主从模式多主机支持开漏输出可编程波特率,时钟极性和第三期合并调制旗/ IRQ线路1合并调制旗/定时器过期线光盘的防伪特征:JTAG的访问与64位受保护的关键允许内存内存可分配给程序访问控制的限制下对敏感地区有一个代码锁相环/遥测分比率为背景的JTAG仿真功能增强的IEEE 1149.1 JTAG标准测试访问端口的软件和硬件多钳各种各样和片上仿真双电压:3.3六/输出,可在1.2 V核心136球BGA封装和144引脚LQFP封装无铅封装,也可
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TDA4864 Pinout: 8- to 32-bit and 16- to 32-bit word packing options Programmable wait state options: 2 to 31 CCLK Digital audio interface includes six serial ports, two pre- cision clock generators, an input data port, three programmable timers and a signal routing unit Serial ports provide: Six dual data line serial ports that operate at up to 50 Mbits/s for a 200 MHz core on each data line each has a clock, frame sync, and two data lines that can be configured as either a receiver or transmitter pair Left-justified sample pair and I2S support, programmable direction for up to 24 simultaneous receive or transmit channels using two I2S compatible stereo devices per serial port TDM support for telecommunications interfaces including 128 TDM channel support for telephony interfaces such as H.100/H.110 Up to 12 TDM stream support, each with 128 channels per frame Companding selection on a per channel basis in TDM mode Input data port provides an additional input path to the DSP core configurable as either eight channels of I2S or serial data or as seven channels plus a single 20-bit wide syn- chronous parallel data acquisition port Supports receive audio channel data in I2S, left-justified sample pair, or right-justified mode Signal routing unit provides configurable and flexible connections between all DAI components, six serial ports, an input data port, two precision clock generators, three timers, 10 interrupts, six flag inputs, six flag outputs, and 20 SRU I/O pins Serial peripheral interface Master or slave serial boot through SPI Full-duplex operation Master-slave mode multimaster support Open drain outputs Programmable baud rates, clock polarities, and phases 3 Muxed Flag/IRQ lines 1 Muxed Flag/Timer expired line ROM based security features: JTAG access to memory permitted with a 64-bit key Protected memory regions that can be assigned to limit access under program control to sensitive code PLL has a wide variety of software and hardware multi- plier/divider ratios JTAG background telemetry for enhanced emulation features IEEE 1149.1 JTAG standard test access port and on-chip emulation Dual voltage: 3.3 V I/O, 1.2 V core Available in 136-ball BGA and 144-lead LQFP packages Lead free packages are also available
TDA4864引脚说明: 8 - 32位和16 - 32位字包装选择可编程等待状态的选择:2至31个CCLK数字音频接口包括6个串行端口,两个前643时钟发生器,输入数据端口, 3可编程定时器和一个信号路由单元串行端口提供:六双串口数据线,在高达50 Mbps的操作/为200兆赫的每个数据行每个人都有一个时钟,帧同步的核心秒,和两个数据可以作为任何一个接收器或发射器对左对齐和I2S样本对支持,最多可同时接收或传送24个频道,每使用两个系列的I2S兼容立体声设备配置可编程方向线;港口的TDM通信接口,包括支持128个电话接口的TDM的渠道,如H.100/H.110支持多达12个的TDM流的支持下,每帧128个频道每个压缩扩展每通道的基础上选择在TDM模式输入数据端口提供了一个额外的输入路径的DSP核心配置为I2S或串行数据或7加一个20位宽的SYN -异步的并行数据采集接口通道或8通道;支持接收通道I2S音频数据,左对齐样本对,或右对齐模式信号路由单元组件之间提供所有戴配置和灵活的连接,6个串行端口,一个输入数据端口,两个精密时钟发生器,3个定时器,10个中断,六旗投入,产出6个旗,20曼谷南南区域股的I / O管脚串行外设接口的硕士或奴隶通过SPI串行启动全双工运作主从模式多主机支持开漏输出可编程波特率,时钟极性和第三期合并调制旗/ IRQ线路1合并调制旗/定时器过期线光盘的防伪特征:JTAG的访问与64位受保护的关键允许内存内存可分配给程序访问控制的限制下对敏感地区有一个代码锁相环/分比率背景遥测的JTAG仿真功能增强的IEEE 1149.1 JTAG标准测试访问端口软件和硬件多钳各种各样和片上仿真双电压:3.3六/输出,可在1.2 V核心136球BGA封装和144引脚LQFP封装无铅封装,也可
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Learning-theory has an apparent improving effect on students" learning the basic skill of table-tennis. In the comparison between tested group and compared group, an obvious difference appears; it also has a positive effect on students" learning interest, for it can make students keep more interest in learning; using learning-theory is able to improve students learning method of table-tennis. Based on the similar initial learning level of tested group and compared group, and through a one-term teaching experiment, apparent difference of learning method between tested group and compared group arrears, and the learning method of tested group is better than that of compared group.
学习理论对学生学习乒乓球的基本技术有明显的促进作用,在实验组与对照组的比较中表现出显著性差异;对学生的乒乓球学习兴趣也存在积极的影响,可以使学生保持较高的学习兴趣;学习理论应用到乒乓球教学中还可以提高和改善学生的乒乓球学习方法,在实验组与对照组学习方法基线水平无显著性差异的基础上,通过一学期的教学实验发现,实验组与对照组在学习方法上出现显著性差异,实验组的学习方法好于对照组。
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Biological characteristics of the pathogen and the resistance of 13 cultivars of tea plant to tea brown blight were studied by means of natural infection in the field and artificial inoculation in vitro. Resistant cultivars and susceptible cultivars of tea plant were divided. And the resistance mechanism was researched tentatively. The findings are as follows: 1 Some biological characteristics of the pathogenic fungus The experiment result showed: the optimum temperature for the growth of fungus mycelium was from 24 to 27℃, the optimum temperature for sporulation ranged 22 to 30℃. Treated at 54℃ in 10 minutes, the spores didn't germinate. The optimum pH for the growth of the mycelium was 5.1~5.9, the optimum pH for sporulation ranged 5.0~6.0. Light had no much effect on the growth of fungus mycelium, but had much effect on the reproduction of the spore.
首先,研究了茶云纹叶枯病病菌的生物学特性;其次,通过田间抗性调查和室内人工接种鉴定,对 13 个茶树品种进行了抗病性鉴定;第三,在前人研究的基础上,对茶树抗病机理作了更深入的研究,结果发现: 1 病原菌的生物学特性病原菌的分生孢子萌发的最适温度范围为 24~27℃,菌丝生长的最适温度范围为 22~30℃;致死温度为 55℃;菌丝生长的最适 pH 范围为 5.1~5.9,孢子萌发的最适 pH 范围是 5.0~6.0;光照对病菌生长速度及分生孢子萌发影响不大,但对其产孢的影响很大,特别是有光照与无光照处理之间差异显著,光照有利于分生孢子的形成。
- 推荐网络例句
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I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""
客人们在卡罗利娜·埃凯家里,举止就文雅一些,因为卡罗利娜的母亲治家很严厉。
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Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.
由著名品牌 Herm è s 设计,这件高贵的制服是香港本土制造,是我们第一套不配帽子的制服。
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Do not 'inflate' your achievements and/or qualifications or skills .
不要 '夸大' 你的业绩或成果,条件或者技能。