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The invention is obtained by adopting a hydrothermal and pyrogenic decomposition method which adopts Zn (CH3COO) 2 . 2H2O, deionized water and ammonia as raw materials; zinc acetate nano ribbon-shaped material is first obtained by a hydrothermal method and is then treated with pyrolysis in air so as to obtain the ZnO nano ribbon-shaped material.

本发明采用水热和高温分解方法制备得到，即，以Zn(CH 3 COO) 2 2H 2 O、去离子水及氨水为原料，先利用水热法制得醋酸锌纳米带状物，然后在空气中高温加热分解而成。

In the present invention, platinum-carbon catalyst, perfluoro sulfonic acid resin solution and absolute ethyl alcohol are uniformly mixed under ultrasonic conditions; mixture is uniformly smeared on a micro-porous layer of carbon cloth or carbon paper in a brushing or printing method, and a traditional Pt/C gas porous electrode is obtained after drying; silicon oil is adopted to infiltrate into pores of a catalyst layer and a diffusion layer of the traditional Pt/C gas porous electrode, and then the ordering anti-drowning gas porous electrode is obtained after drying.

本发明是将铂碳催化剂、全氟磺酸树脂溶液和无水乙醇在超声波条件下混合均匀，采用涂刷或印制的方法将混合物均匀涂布到碳布或碳纸的微孔层上，干燥后制得传统Pt/C气体多孔电极；然后将硅油渗入到传统Pt/C气体多孔电极的催化层和扩散层孔隙中，干燥后制得有序化抗溺水气体多孔电极。

Using the independence number and the girth, the upper bound of the Betti deficiency is obtained. A better lower bound on the maximum genus of a graph is obtained and a previous result is improved.

利用图的独立数和围长，得到了一个Betti亏数的上界，进而得到了最大亏格的一个比较好的下界，改进了黄元秋先前的一个结果。

If the result is again a draw or if there are no individual Time-Trial stages the placings obtained in each stage shall be added and, as a last resort, the place obtained in the last stage ridden shall be taken into consideration.

如果总时间还是相同，或是比赛中没有个人计时赛，就将运动员在分段所得的名次进行累加以决定胜者；如果还相同，就以最后一段比赛名次决定。

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The results indicated that a dependable kinetic model could be obtained by modifying the Temkin equation by considering the H2 and NH3 adsorption factors. Activation energy for the ammonia synthesis reaction was obtained as 90.2 kJmol^(-1) after linear fitting the kinetic and thermodynamic parameters k, K(subscript H2) and K(subscript NH3) with the Arrhenius and Van't Hoff equation, which was much lower than that over iron-based catalyst, which indicated that the activation energy barrier of N2 dissociative adsorption on Ru was far lower than that on either the conventional magnetite-based catalyst or wustite-based catalyst; the hydrogen adsorption heat was 76.2 kJ mol^(-1), indicating that the adsorption of hydrogen on the Ba-Ru-K/AC catalyst was so strong that it inhibitied the dissociative adsorption of nitrogen.

结果表明，在Temkin方程中加入H2和NH3的吸附项能够获得可靠的动力学模型，用Arrhenius和Van't Hoff方程对动力学和热力学参数k、K(下标 H2)和K(下标 NH3)进行线性拟合，得到氨合成反应的活化能为90.2 kJmol^(-1)，远低于铁基催化剂，说明Ru上N2的解离吸附活化能垒远低于传统磁铁矿基催化剂和维氏体基催化剂。H2的吸附热为76.2 kJmol^(-1)，证明Ba-Ru-K/AC催化剂上H2的吸附较强烈，对N2的吸附有强烈的抑制作用。

The titrant is a mixture of EDTA and sodium fluoride, both mercury film electrode and fluorinion selective electrode are inserted in the titration solution. In a process of titration, both the added volume of titrant and the concentration of mercury ion at each titration point can be obtained simultaneously from the potentials of two electrodes, and then the concentration of each component in the alloy can be obtained from the titration curves by multivariate calibration.

用ED-TA与氟化钠的混合溶液作为滴定剂，被滴定液中同时插入了汞膜电极和氟离子选择电极，在滴定过程中的任一滴定点，溶液中汞离子的浓度和滴定剂的加入体积可由两个电极的电位测定值同时获得，从而可应用多元校正法由相应的滴定曲线求得混合金属中每一种组分的含量。

Glycidyl benzoate,glycidyl propionate,glycidyl acetate were obtained respectly through a phase-transfer catalytic methodology using sodium benzoate, sodium propionate, sodium acetate and epichlorohydrin as raw materials, and pure products were obtained though vaccum distillation.β-cyclodextrin and glycidyl benzoate, glycidyl propionate, glycidyl acetate, reacted in organic solvent and goal product were

先以苯甲酸钠、乙酸钠、丙酸钠和环氧氯丙烷为原料在相转移催化剂的作用下分别合成了苯甲酸缩水甘油酯、乙酸缩水甘油酯和丙酸缩水酯，经过减压蒸馏，得到相应的纯品；β-环糊精和苯甲酸缩水甘油酯、乙酸缩水甘油酯、丙酸缩水甘油酯在有机溶剂中反应，经过硅胶色谱柱分离，得到了相应的产品，产品经过TLC、IR、1H NMR、MS表征，并研究了温度、反应时间、催化剂等几个因素对反应工艺的影响，结果表明温度和催化剂对反应的快慢有较大影响。

The optimal time for combination of radiosensitizers and radiotherapy will be determined from the significant difference of uptake and retention between the tumor and the major normal tissues. The biodistribution obtained from organ removal and counted by gamma scintillation counter was similar to that obtained from autoradiography.

本研究利用加马闪烁计数器与自动放射摄影术两种方法，探讨分别或同时使用[131I] IUdR、[18F] FMISO在肿瘤及正常器官的摄取状况、清除速率及生物分布，找出此两种药物在肿瘤中积聚最多的时间点，并与其他正常器官有明显的差别，以期应用在临床上病人给药的依据。

Based on Netherlands ship model Basin's open-water tests,CPP's thrust coefficients and torque coefficients in four-quadrant under different pitch ratio of screw and different types of CPP were obtained by using the method of Akima interpolation,and CPP's thrusts and torques were obtained as well.

为在船舶操纵模拟器中进行CPP船舶的操纵运动仿真，须建立其操纵运动数学模型，该模型的精度直接影响船舶操纵模拟器的逼真度。1991年，Takeda等[1]研究了CPP船舶减速时的操纵性能。1996年，Robert[2]研究了CPP船舶在不同CPP螺距和轴转速组合下的推进效率，并设计了一个鲁棒多参数推进控制系统。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。