查询词典 selenium

Morphological conversion from spiralto coccoid forms occurred when HP was cultured with selenium and most of coccoid forms had fragmentary flagella and pilus; the effection of selenium to activity of urease, catalase, alkaline phosphatase is not exist or not evidence; selenium enable pET32a-vacA-E.coli BL21 which can express VacA produce yellow lipochrome, and the color become deeper with increasing of concentration of selenium; selenium can decrease expression of recombined VacA by restrain the growth of pET32a-vacA-E.coli,but can not influence activity and gene sequence of VacA; selenium can enhance the suppression effect of recombined VacA for gastric cancer cell, depress the index of cell multiplication and the forming rate of colony, decrease the number of cell in S period, increase total of cell in G period; After purified, the recombined VacA can be identified by VacA antibody.

体外实验结果表明：一定浓度的硒作用HP后，HP菌落数量随着硒浓度的增加而减少，菌落颜色由灰白色变为砖红色，溶血现象随硒浓度的增加和作用时间的延长而逐渐消失，HP的形态由弯曲形变为球形或椭圆形，鞭毛及菌毛出现脱落现象；硒对尿素酶、过氧化氢酶、碱性磷酸酶活性无影响或影响不明显；一定浓度的硒能使表达VacA的pET32a-vacA-E.coli BL21工程菌产生脂溶性砖红色色素，颜色随硒浓度增加而加深；一定浓度的硒通过抑制pET32a-vacA-E.coli BL21工程菌的生长，减少重组VacA表达量，但不影响其空泡毒活性及编码基因序列；纯化后的VacA重组蛋白可被VacA抗体识别，具有良好的抗原性。

We also discovered that selenium can decrease hematolysis and effects function of vacuole toxin of HP. morphological conversion from spiralto coccoid forms occurredwhen HP was caltured with selenium and most of coccoid forms had fragmentary flagella and pilus; the effection of selenium to activity of urease, catalase, alkaline phosphatase is not exist or not evidence; selenium enable pET32a-vacA-E. coli BL21 which can express VacA produce yellow lipochrome, and the color become deeper with increasing of concentration of selenium; selenium can decrease expression of recombined VacA by restrain the growth of pET32a-vacA-E. coli, but can not influence activity and gene equence of VacA; selenium can enhance the suppression effect of recombined VacA for gastric cancer cell, depress the index of cell multiplication and the forming rate of colony, decrease the number of cell in S period, increase total of cell in G period; After purified, the recombined VacA can be identified by VacA antibody.

结果：体外实验结果表明：一定浓度的硒作用HP后，HP菌落数量随着硒浓度的增加而减少，菌落颜色由灰白色变为砖红色，溶血现象随硒浓度的增加和作用时间的延长而逐渐消失，HP的形态由弯曲形变为球形或椭圆形，鞭毛及菌毛出现脱落现象；硒对尿素酶、过氧化氢酶、碱性磷酸酶活性无影响或影响不明显；一定浓度的硒能使表达VacA的pET32a-vacA-E.coli BL21工程菌产生脂溶性砖红色色素，颜色随硒浓度增加而加深；一定浓度的硒通过抑制pET32a-vacA-E.coli BL21工程菌的生长，减少重组VacA表达量，但不影响其空泡毒活性及编码基因序列；硒能增强重组VacA对胃癌细胞的抑制作用，使细胞分裂指数和集落形成率降低、S期细胞数量减少，G1期细胞总数增加；纯化后的VacA重组蛋白可被VacA抗体识别，具有良好的抗原性。

Necrosis and apoptosis that gradually increase and eventually result in enervation and death of chicken with selenium-penia. The effect of selenium on the lipid peroxidation of the cellular membrane system of tissues is the main mechanism that selenium induces apoptosis of tissues.

雏鸡硒缺乏时，甲状腺、肝脏、胸部肌肉、胰腺、胸腺等组织细胞凋亡增加，证明硒缺乏雏鸡体内发生两种细胞死亡，即坏死和细胞凋亡，由于细胞坏死和凋亡的加重与增多，致使硒缺乏雏鸡走向衰竭，最后死亡。

Rare precious metals company mainly engaged in electroplating and metal surface treatment, environmental treatment, washed clean of raw materials: silver nitrate, nitric acid and rhodium, palladium nitrate; Asia selenium acid, selenium dioxide, tellurium dioxide, mineral selenium powder Japan, Mitsubishi Se powder, Mitsui, Sumitomo, emerging, Germany selenium powder; molybdenum trioxide, DMF; TX-10, NP-9 series, EDTA series; sodium hypophosphite, nickel nitrate, metal thallium, rhodium, palladium, platinum , Beryllium, Ritek, zirconium products; sponge palladium; electrolytic nickel, nickel corner, hydrazine hydrate, Ultra-fine silver, nano-silver; Thallium sulfate, iodized Thallium sulfate, nickel, copper sulfate, copper chloride, copper oxide, nickel oxide , Lanthanum oxide, oxidation Er, bismuth oxide, bismuth ingots, tin ingots, indium ingot, indium foil, Xinding, zinc powder; SnCl2, sulfate-tin; hydrofluoric acid, white Vaseline, propylene glycol, dichloro Methane, the propylene glycol, triethanolamine, triethanolamine oleic acid soap, chloroform, pyrophosphate copper, Gioia sodium, polyacrylamide, PAC, oleic acid, Glycerol, phosphate and other domestic and imported chemical series.

公司主要经营稀贵金属及电镀金属表面处理、环保污水处理、洗涤清洗原料：硝酸银、硝酸铑、硝酸钯；亚硒酸、二氧化硒、二氧化碲、日本矿业硒粉、三菱硒粉、三井、住友、新兴、德国硒粉；三氧化钼、二甲基甲酰胺；TX－10、NP-9系列、EDTA系列；次亚磷酸钠、硝酸镍、金属铊、铑、钯、铂、铍、铼、锆系列产品；海绵钯；电解镍、镍角、水合肼、特细银粉、纳米银粉；硫酸铊、碘化铊、硫酸镍、硫酸铜、氯化铜、氧化铜、氧化镍、氧化镧、氧化铒、氧化铋、铋锭、锡锭，铟锭、铟箔、锌锭，锌粉；氯化亚锡、硫酸亚锡；氢氟酸、白凡士林、丙二醇，二氯甲烷，二丙二醇，三乙醇胺、三乙醇胺油酸皂、三氯甲烷、焦磷酸铜、焦亚硫酸钠、聚丙烯酰胺、聚合氯化铝、油酸、甘油、磷酸等国产、进口化工系列。

The best selenium-adding time was at 24 hours. When the concentration of sodium selenite was over 12μg/mL it obviously inhibit the conversion of inorganic selenium by yeast. The assimilation rate of selenium by yeast was 62% and the conversion rate was 53%. The cell broken rate with ultrasonic cell pulverizer was about 55%.

啤酒酵母菌的最佳加硒时间为24h，亚硒酸钠浓度大于12μg/mL对啤酒酵母菌转化无机硒有明显抑制作用，啤酒酵母菌对无机硒的摄入率约为62%，转化率约为53%；超生波细胞粉碎仪破碎细胞的破碎率为55%左右。

The valence state and solubility of selenium in paddy soils, the dissolution equilibria of selenium and the valence changes of selenate in soil solution, the influences of redox potential and pH value on valence changes of selenium are discussed theoretically. A characteristic pH-Eh relationship is derived.

从理论上讨论了土壤硒的价态及其溶解性，土壤溶液中不同形态的硒的溶解平衡与可能存在的 Se的变价反应，土壤溶液中硒的价态转换的影响因素，特别是氧化还原电位与pH对淹水土壤溶液中硒的价态变换的影响。

This is called "Se CD4 T cells out of control"(selenium CD4 T cell tailspin) theory is the AIDS of the University of Georgia, MD, EW Taylor made.

该被称为"硒 CD4 T 细胞失控"（selenium CD4 T cell tailspin）的艾滋病发病理论是佐治亚大学的 E。

Selenium on the role of tumor cells mainly as follows: Se is the destruction of tumor cells; Selenium is blocking tumor cell energy; selenium is the effect of anticancer drugs enhancer. 1999, the Chinese Academy of Agricultural Sciences, the experts in the integration of the Western anti-tumor the essence, the trace element selenium and medicine Xiancao "fungus spores on" organic combination of the successful production of the anti-tumor products combining Chinese and Western - Se Ganoderma Po.

硒对肿瘤细胞的作用主要表现为：硒是肿瘤细胞的杀伤剂；硒是肿瘤细胞的能量阻断剂；硒是抗肿瘤药物的药效增强剂。1999年，中国农业科学院的专家们融合中西方抗肿瘤理论精髓，将微量元素硒与中药仙草"灵芝孢子粉"有机地结合在一起，成功研制出了中西结合抗肿瘤产品———富硒灵芝宝。

The lipid peroxidation of S. maxima cultured in the presence of 4 to 100mg Se/L analysed showed that the contents of free radicals by EPR and malondialdehyde increased, of which the latter was the products of lipid peroxidation. These resulted in the decrease of the contents of liposoluble matter and percentage of polyunsaturated fatty acids, and the increase of percentage of saturated fatty acids. Using dimethyl sulfoxide , which was oxidized by OH·to form the stable and nonradical compound, methane sulfinic acid , as a molecular probe, we found that the contents of MSA from S. maxima growing in the presence of selenium were higher than those without selenium added, i. e. selenium in vivo was able to scavenge OH. in this alga.

对4～100mg Se/L范围内培养的S.maxima进行脂质过氧化的分析结果表明，加硒条件下藻细胞EPR自由基的含量与脂质过氧化产物的含量增加，造成细胞脂溶性物质含量和不饱和脂肪酸百分含量下降，以及饱和脂肪酸的百分含量相对上升；使用DMSO作分子探针，用它与OH·的反应产物MSA来表示藻细胞OH·含量，发现加硒条件下藻细胞MSA含量低于未加硒的，即硒在藻细胞内具有清除OH·作用。

The experiments on 11 crops cultivation, including wheat, rapes, sweet potato sesames, leeks and so on, were carried out in Jingzhou as selenium resources from selenium mineral powders, complex fertilization of containing abundant selenium and Na2SeO3 in high selenium area.

以源自高硒区的硒矿粉、富硒复混肥和Na_2SeO_3为硒源对小麦、油菜、红薯、芝麻、韭菜等十一种作物在荆州进行了异地富硒栽培试验和提高硒矿粉利用率的试验，得出如下结论： 1。应用硒矿粉、富硒复混肥和Na_2SeO_3作为硒源均能提高试验作物的硒含量水平，以土壤施入和叶面喷施的方式均能升高作物的含硒量，可以作为富硒栽培的一个重要措施。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。