实验法
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In this paper the uniform designing is used to design the experiments,which the alkyd resins were modified by acrylic polymers.
均匀设计法运用到丙烯酸改性醇酸树脂的合成实验中,可以在较少的实验次数中寻求到比较准确的实验数据,并可以利用实验数据建立各项性能指标与影响因素之间的回归方程,从而为进一步改进树脂性能,提供正确的思
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The effect of sleep improvement of the three dosages(570 mg/kg,1000 mg/kg and 2000 mg/kg)of Semen Ziziphi Spinosae was studied by the experiments of sleep-induced directly, prolonging sleeping time induced by pentobarbital sodium, affecting mouse sleeping rate under the threshold hypnogenesis dosage of pentobarbital sodium and affecting sleeping delitescence induced by tobarbital sodium. The content of 5-HT in the brain of mouse was measured by fluorescence assay.
通过直接睡眠实验、延长戊巴比妥钠睡眠时间实验、戊巴比妥钠阈下催眠剂量实验和巴比妥钠睡眠潜伏期实验,比较低、中、高3个剂量(570 ,1 000 及2 000 mg/kg)酸枣仁粉剂对小鼠睡眠的影响,并且用荧光法测定小鼠脑中 5-羟色胺含量。
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The conventional rock electricity experiment get the irreducible water saturation with centrifugation,we think it is higher than its actual value.At present,we think the irreducible water saturation that get from mercury intrusion method is accurate.In view of the disadvantages of mercury intrusion method,we analysis the effect of bark of bluish dogbane and correct the experiment data,finally get reasonable data.
常规的岩电实验用离心法得到的束缚水饱和度普遍以为其偏高,目前以压汞法得到的束缚水饱和度为准,本文考虑压汞实验的弊端,深进分析"麻皮效应"对计量结果的影响,对压汞实验数据进行校正,得到了较为公道的实验数据。
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The vapour and plasma ignition times of the target are got based on the equation of heat conduction and cascade model. We suppose that the plasma is ignited when 210 generations of new electrons are born in vapour generation time. The influence of temperature on the thermodynamics and optics parameters of material also have been considered in the model. The resulting theory has good agreement with the experiment and overseas report. A blade method to measure the laser spot is given in this paper with validation and error analysis. The plasma threshold of metals in atmosphere and water ambients both are diagnosed with the light deflection and piezoelectric transducer. A Q-switched pulsed Nd:YAG laser operating at infrared (1064nm), visible(532nm) and ultraviolet (355nm) wavelengths has been used. Al、Fe、Cu are used as targets and get a similar results with both method. Theoretical and experimental analyses are applied on the influence of wavelength on the threshold have been done, both of which have shown that the plasma threshold of metals decrease as the laser wavelength increases; The plasma threshold of metals are higher in water than in air and the pressure of the shock wave in water is five times higher than in air.
从热传导方程和雪崩电离机制出发,假设当电子增值2~(10)倍时,考虑了温度对材料热力学和光学参数的影响时,得到了气化和等离子体点燃的时间,利用该模型进行计算得到的结果与国内外报道及自行通过实验测得的阈值基本一致;提出了利用刀刃法测量激光光斑面积的方法,并通过实验进行了验证和误差分析;利用光偏转装置和压电换能器分别对空气和水中金属等离子体点燃阈值进行了实验诊断,激光器均为调Q—YAG激光器(波长1064nm,532nm,355nm,脉宽10ns),靶材分别为Al、Fe和Cu,两种测试方法得到的等离子体点燃阈值基本一致;本文从实验和理论计算两个方面讨论了波长对等离子体点燃阈值的影响,均得到了等离子体点燃阈值随着波长的增加而减小的结论;对空气中和水中不同环境下金属等离子体的点燃阈值进行了比较研究,得到了金属在水中的等离子体点燃阈值比空气中的大,且水中产生的冲击波的压强是空气中的5倍左右的结论。
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The heat generation curves of seven rubber materials used in tires with the changes of temperature have been obtained by using Dynamic Mechanics Analysis technique on NETZSCH DMA242 instrument, knowing that the heat generation of every other rubber materials except inner liner rubber changes lightly alone with the temperature within 10℃~80℃. According to the Fourier law, the heat transfer coefficients of tire rubber are measured by stable method on self-made experiment instrument. The coefficients changes lineally within 20℃~80℃ and the relation formulas λ=λ〓+bt are given out attached with λ〓 and b. The specific heat of tire rubber are measured on Differential Scanning Calorimeter NETZSCH DSC204 and the relations with temperature are linear and the formula is c=c〓+bT, where c〓 and b gained from experiment result data are presented in the paper. The heat convection coefficients on the surface of rolling tire are measured according to the principle of heat-mass transfer analogy principle after simplifying rolling tire into rotating disk with straight movement on wind channel. The relation with rotation speed of disk is linear as h=5. 399+0.0258n and the relation with straight line speed of tire is linear too, h=
论文采用动态力学分析技术,使用NETZSCH DMA 242型实验仪,获得了轮胎用七种胶料的生热率随温度变化曲线,确知除内衬层胶以外,其它各种胶料在一般胎温范围内(10℃~80℃)的生热率随温度变化不大;轮胎胶料的导热系数根据傅立叶定律的基本原理,采用稳态法在自行搭建的实验台上进行测试,结果表明,材料的导热系数在20℃~80℃的温度范围内随温度呈线性变化,论文给出了各种材料导热系数的线性变化的关系式λ=λ〓+bt及其λ〓和b的值;轮胎胶料的比热运用差式扫描量热原理,在NETZSCH DSC204型DSC实验仪上进行测试,结果表明,胶料的比热随温度的变化呈线性变化,其关系可用c=c〓+bT表示,文中给出了根据实验数据拟合的c〓、b的值;对轮胎表面的对流换热系数的测定,本文先将滚动的轮胎简化为有直线运动的旋转圆盘,而后采用萘升华热质比拟技术,在风洞中测量了滚动轮胎表面的对流换热系数,结果表明,圆盘表面对流换热系数与转速呈线性关系,即h=5.399+0.0258n,轮胎表面对流换热系数与其直线运动的速度呈线性关系,即h=
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The Paired Comparison and Constancy Graphical approaches for statistical analysis will be used for the psychological experiment.
因此,针对声源方向感受此一课题,以两反射音之模拟声场进行实验探讨,研究方法不仅以数理解析,并针对人们实验的心理感受进行调查分析,心理实验时采用配对比较法及恒常性图解法统计分析,试图藉由若干变因的控制进行量化,实验结果发现声源方向感度的变化,主要受制於双耳互函数级数及全反射音振幅的大小,双耳听觉互函数主要与反射到达测听者的方向和反射的幅度有关,证实声源方向感度与双耳互函数级数为正比之关系存在。
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The first stage is screen experiment. A 24-1 Fractional Factorial Design and resolution IV experiment is used to find out which main effect and interaction effect have obvious influence on the precision positioning of feeding table by these four factors. The Minitab program including Half Normal Plot, Pareto Chart, and ANOVA is applied to diagnose obvious effects. The second stage is optimization experiment. The fitness of regression model is obtained by using CCD of RSM with statistical hypothesis testing, regression analysis, lack-of-fit testing, and residual analysis. The optimum values can be found out by using response surface plot and contour plot.
在第一阶段为筛选实验采用24-1部分因子实验,解析度为IV,求出这4个因子主效应及交互作用哪些会对进给平台定位精度有显著的影响,在分析方面使用统计软体Minitab做初步分析,应用了半常态机率图、柏拉图与变异数分析来判断出显著因子与交互效应显著,第二阶段优化实验采用反应曲面法的中央合成设计,搭配统计检定、回归分析、缺适性检定(Lack-of-Fit)、残差分析来取决回归模式之合适性,最后根据反应曲面图及等高线图求出最佳值做验证实验。
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Methods 1. The mice were divided into control and 3 Ganodermalucidum spores oil groups (at low, moderate and high doses), orally given forconsecutive 30 days. The body, spleen, thymus weight were observed, study on theeffect of the drug on the cellular immune function by proliferation and transformationof spleen lymphocytes test; study on the effect of the drug on the humoral immunefunction of mice by serum erythrocytolysin test; study on the effect of the drug on themononuclear macrophage function by carbon clearance and neutral red test.
实验方法 1设玉米油对照组和低、中、高三个灵芝孢子油剂量组,连续灌胃30天后观察小鼠体重、胸腺、脾脏重量指数;采用吞噬中性红和碳廓清实验测定对小鼠单核-巨噬细胞功能的影响;血清溶血素实验测定对小鼠体液免疫功能的影响;ConA诱导脾淋巴细胞转化实验测定对小鼠细胞免疫功能的影响;MTT法测定对小鼠NK细胞杀伤活性、脾细胞产生TNF-α和IL-2含量的影响。
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The results showed that (1) The grain size of nanometer YiO_2 was40~80nm.The wavelength corresponding to the maximum absorbency values were observedin the 200~320nm range.The crystal structure of carbon doped TiO_2 photocatalyst is primarilyanatase(22.43% rutile), and the content of carbon is about 4.6%.(2) The relative humidityvaring from 8% to 80%, the photocatalytic degradation degree of benzene increased withincreasing relative humidity; and to toluene, degradation rate was hanced by relative humidityup to 60%, and more or less inhibited above 60%.(3) Scheme and results of orthogonal testswere used by evaluating the photocatalytic performance of the gas phase methanol, acetoneand 1-heptane.The results revealed that their degradation degree reached 84.5%, 93.39% and93.45%, respectively.(4) The 254nm UV lamp showed higher photocatalytic degradation rate.For methanol, acetone and 1-heptane, it was found that photocatalytic degradation reactionoccurs with the light strength of daylight lamp.(5) Under the the same conditions, 15%degradation degree has been obtained for benzene, whilst about 10% degradation degree wasattained by Degussa P25; During the initial phases, the toluene revealed higher photocatalyticactivity, comparing with Degussa P25, the degradation degree of methanol, acetone and1-heptane were slightly lower.
结果表明:(1)CVD法制备的纳米TiO_2光催化剂,颗粒球形度好、粒径在40~80nm之间;最大吸光度值所对应的波长为200~320nm;含碳量约为4.6%;晶型组成主要为锐钛矿型,金红石的含量约为22.43%;(2)在相对湿度为8%~80%范围内,苯的光催化降解率随着相对湿度的增大而增大;甲苯在相对湿度为60%时达到最好降解效果,当相对湿度增大到80%时光催化效果降低;(3)将正交实验设计及实验方案应用于气相甲醇、丙酮和正庚烷光催化降解研究,实验结果表明:三者最高降解率分别为84.5%、93.39%和93.45%;(4)有254nm紫外灯参与的光催化实验可以大大提高有机气体的光催化降解率;在日光灯的照射下,掺碳纳米TiO_2对气相甲醇、丙酮和正庚烷具有一定的光催化氧化能力;(5)较P25粉,在相同的光催化操作条件下:气相苯的平均降解率达15%,高于P25粉10%的降解率;气相甲苯在初始阶段具有较高的反应速率;气相甲醇、丙酮和正庚烷的降解率略低于P25粉。
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MethodsAnti-inflammation effect of wild and cultivated Polygonun capitatum were observed by mouse abdominal cavity capillary permeability increase test induced by acetic acid, mouse auricle swelling test induced by xylene, mouse pedal swelling test induced by carrageenin and cotton granuloma test in mouse.
方法采用醋酸致小鼠腹腔毛细血管通透性亢进、二甲苯致小鼠耳肿胀实验、角叉菜胶致小鼠足肿胀和小鼠棉球肉芽肿等实验进行抗炎实验,采用醋酸扭体法进行镇痛实验。
- 推荐网络例句
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For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether
年美国个人破产法的一个改动使得破产登记急速下降,而后引起了信用卡大规模的亏损。
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Eph. 4:23 And that you be renewed in the spirit of your mind
弗四23 而在你们心思的灵里得以更新
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Lao Qiu is the Chairman of China Qiuyang Translation Group and the head master of the Confucius School. He has committed himself to the research and promotion of the classics of China.
老秋先生为中国秋阳翻译集团的董事长和孔子商学院的院长,致力于国学的研究和推广。