查询词典 selenium

Desquamative scalp with the body's lack of B vitamins, so adjust diet to improve the nutritional status of oral daily amount of vitamin B and vitamin E, coupled with the 5-20 micrograms of selenium These nutrients have helped to eliminate dandruff.

此外许多人出现头皮脱屑还与体内的缺乏B族维生素有关，因此调节饮食结构，改善营养状况，每天口服适量的维生素B和维生素E，再加上50至200微克硒元素，这些营养物质对消除头皮屑皆有助益。

It's found that the aromatic dinitro compounds can be monoreduced to nitroanilines in high selectivity, aromatic nitro compounds and muti-cycle aromatic nitro compounds can be quantitively reduced to the corresponding amine by selenium catalyst with CO/H2O in polar aprotic solvents under atmospheric pressure using medical inorganic bases as co-catalysts.

在实验的基础上提出了对硒催化CO/H_2O还原芳香硝基化合物机理的一些粗浅认识。

College of Chemistry and Molecular Sciences,Wuhan University,Wuhan 430072A novel diselenide porphyrins dimmers was synthesized using 5(4- hydroxylphenyl)-10,15,20- triphenyl porphyrin and selenium as raw materials. The structure of the novel porphyrin was confirmed by 1H NMR, IR, UV, and MS.

以5-(4-羟基苯基)-10，15，20-三苯基卟啉和硒粉为原料，合成了新型二硒双卟啉，用紫外可见光谱，红外光谱，核磁共振氢谱（1H NMR），高分辩质谱对目标产物的结构进行了确认。

Said cathode material is compound material consisting of copper and selenonium, especially having different chemical element proportional of copper - selenium compound: copper diselenide, copper selenide, cuprous selenide.

该阴极材料是由铜和硒组成的化合物材料，具体为含有不同化学元素比例的铜-硒化合物：二硒化铜、硒化铜、硒化亚铜。

Symmetrical six-horn nickel diselenide nanostars were firstly synthesized with selenium powder as precursor but without any external reducing agents. Each nanostar consisted of a central core and six symmetrical nanohorns.

以硒粉为硒源，在无外加还原剂的条件下首次合成了六角星状二硒化镍纳米晶，每个纳米星具有一个中心核和六个对称纳米角。

In the areas distributed by Silurian siltstone and sandstone, Ordovician dolomite and dolomitic limestone, as well as Middle-Upper Cambrain limestone and calcirudite, the selenium content of the water in springs and wells is low.

含硒量低的志留纪砂岩和粉砂岩、奥陶纪白云岩、白云质灰岩以及中、晚寒武世灰岩和砾屑灰岩分布区的泉水和井水的含硒量低。

These results show the future of selenium-based chalcogenide glass applied as dosimetric material.

硒化物硫系玻璃在作为剂量计材料应用方面具有良好的前景。

As a constituent of selenoproteins, selenium has structural and enzymic roles.

晒是含硒蛋白的一个组份，某些含硒蛋白具有重要的酶催化功能。

At present, it has been demonstrated that there is abnormality of microelements in psoriatic patients, and the effect of microelements, including zinc, copper, manganum, ferrum, selenium and nickel, on psoriasis are summarized here.

目前许多研究发现，银屑病患者存在着微量元素的异常，文中从锌、铜、锰、铁、硒等方面分析微量元素与银屑病的影响。

The electrochemical property of the polarographic adsorptive complex wave produced by selenium and glutathione, nickel and dimethyl glyoxime, cadmium and KI discussed in this paper.

本文探讨了硒与谷胱甘肽、镍与丁二酮肟、镉与碘化钾产生的络合吸附波的电化学性质，并应用到实际样品的测定中，取得了良好的效果。

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。