查询词典 selenium

The effects of dietary zinc, selenium and vitamin E content on development and the age of first estrus and serum reproductive hormones in prepubertal gilts were investigated.

本研究的目的是通过在饲粮中使用不同含量的锌、硒和维生素E而引起后备母猪生长发育参数、血清生殖激

Effects of selenium on the growth and anti-oxidative enzyme activities of Pueraria phaseoloides hairy roots were investigated.

摘 要：本文研究硒对三裂叶野葛毛状根生长及抗氧化酶活性的影响。

The concentrations or activities of selenium,copper,zinc and MDA or GSH-Px,SOD ,CuZn-SOD and CAT in infested and healthy Rangifer tarandus sera were detected respectively in order to explore relationship between C.trompe infestation and metabolism of oxygen free radical. Results were as follows.

为探讨驯鹿狂蝇蛆病与机体氧自由基代谢的关系，分别对感染驯鹿和健康驯鹿血清中的微量元素硒、锌、铜、谷胱甘肽过氧化物酶、超氧化物歧化酶、铜锌超氧化物歧化酶、过氧化氢酶和脂质过氧化终末产物丙二醛的含量进行了测定。

The reabsorption of scattering X-rays in amorphous selenium are considered in detail.

本文对光电吸收占优的条件下，X射线与非晶硒作用中产生的散射光子重吸收作了较为详细的研究。

With the increasing of content of selenium, the electrical conductivity and thermal conductivity increase but the Seebeck coefficient decreases.

随着Se含量的增加，样品的电导率和热导率逐渐增加，而Seebeck系数逐渐降低。

Three sites of high, medium and low Selenium status were chosen in the seleniferous area of Enshi and neighboring places.

在恩施高硒及邻近地区选择了高、中及低硒三个试验点，各点间的距离不超过20～30公里。

The serum selenium is first digested by microwave treatment and then chemically purified before analysis by using sulphydryl cotton. The optimum conditions were found to b as follows:(1) The sulphydryl cotton column is prewashed with 5 mol/L hydrochloric acid;(2) Se is desorbed by adding 1 mL of concentrated nitric acid and (3) the optimum amount of sulphydryl cotton is 0.14 g. This preconcentration step is required in order to remove matrix-interfering elements, such as Na, Mg, K and Ca.

采用微波消解－巯基棉分离对人血清样品进行前处理，通过对巯基棉分离血清中硒的条件优化，结果表明，柱条件为5mol/L HCl、解脱Se条件为1mL重蒸HNO3、巯基棉最佳用量为0.14g时，能够有效分离出人血清样品中的Na、Mg、K、Ca等碱金属和碱土金属，同时硒的回收率最高，达到92%以上。

Low valent selenium and telluronium compounds have high reducing selectivity to be used to form carbon-hydrogen bonds as special reducing reagents.

低价硒、碲化合物具有良好的还原选择性，可用于多种碳-氢键的形成，碲叶立德和α-芳硒基取代的胂叶立德均可发生Wittig型反应，是形成碳-碳双键的重要方法。

Low valent selenium and telluronium compounds have high reducing selectivity to be used to form carbon-hydrogen bonds as special reducing reagents.

低价硒、碲化合物具有良好的还原选择性，可用於多种碳-氢键的形成，碲叶立德和α-芳硒基取代的胂叶立德均可发生Wittig型反应，是形成碳-碳双键的重要方法。

In particular, is rich in cellulose and on human health of Tete set of essential significance of selenium and much nutrition, health experts attention.

尤其是富含纤维素和对人体保健具有特特定意义的必需微量元素硒而倍受营养、卫生专家重视。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。