产硒的

By means of electric hydrogenation -atomic absorption spectrophotometer, the seleniumcontets have been determined,analysed and evaluated in 204 samples of twelve grain and grain by-products such as rice, wheat, corn , barley, rape seed cake, cotton seed cake , soybean cake, sesame seed cake, soybean, rice bran, wheat bran and peanut oil cake, etc.

本文运用电热氢化—原子吸收分光光度法，对湖北省产稻谷、小麦、玉米、大麦、菜子饼、棉子饼、大豆饼、芝麻饼、大豆、米糠、小麦麸皮、花生饼十二种粮食及其副产品204个试样中硒元素的含量进行了测定、分析和评价。

Single factor design was adopted and 12 Yorkshire sows, which were littermate or semi-littermate with similar body weight(initially 250 Kg of mean body weight) at the similar gestation day(86 day), were randomly allotted to 3 treatments (active dry yeast, Se-enriched yeast, control), there were four replicates with one sow per replicate in one treatment.

实验采用单向分类设计，选用血缘一致、体重接近、妊娠日期(妊娠第86至88天)相近的第5胎约克经产母猪12头，随机分为3个处理，每个处理4个重复，每个重复1头猪，分别为：对照组、硒酵母组、活酵母组。

Cows in the perinatal period were used in the experiment.Through clinical symptom and laboratory examination, they were divided into five groups that were healthy multiparity cows,healthy primiparity cows,cows with fatty liver disease, cows with ketosis and cows with rtention fetal membrance. We experimented blood of antepartum 15,8,1 day and postnatal 1,8,15,22 day,then assayed Thyroid hormone, thyroid-stimulating hormone, Iodine ,Selenium, GSH-Px in blood-serum. At last,we analysed data by statistical way .

本实验以处于围产期的57头奶牛为研究对象，通过实验室检查结合临床症状查出其中健康的经产牛、健康的初产牛及患酮病、患脂肪肝、患胎衣不下的自然病例，在奶牛产前15天，产前8天，产前1天，产后1天，产后8天，产后15天和产后22天分别采颈静脉血，检测血清中甲状腺激素(T4和T3)、促甲状腺激素、碘、硒和谷胱甘肽过氧化物酶的含量、摸索出其动态变化并作了统计分析。

We prepared the pyrethric acid II through four reactions: esterification, oxidation, decomposition, diesterification. And the original synthesis route of the pyrethric acidII was improved: the yield of oxidation of allyl rise through increasing the activity of Selenium dioxide; in the document, tert-butyl-trans -2, 2-dimethy1-3-(2"-methoxycarbony1-1"-propenyl)cyclopropanecarboxy late was synthesized from tert-butyl-trans-2,2-dimethyl-3-(2 -formyl-r -propenyl) cyclopropanecarboxylate with two steps, with low yield.

我们经过酯化，氧化，成双酯，热分解四步反应，成功地得到了第二菊酸，并改进了原第二菊酸的合成路线：通过改变二氧化硒的活性提高了烯丙甲基的氧化产率；将原路线中醛氧化成羧酸、羧酸酯化的两步反应改为醛和甲醇、二氧化锰等作用一步直接酯化的方法，减少了反应步骤，提高了总收率。

In this study, we examined the influences of different species of Se (selenite, selenate, seleno-L-methionine) on the accumulation of inorganic Hg2 and methylmercury by the green mussels via the pathway of pre-exposure and concurrently exposure. The interaction of Se and Hg in marine invertebrates was further discussed.

使用不同形态硒Se~(4+，s产和有机se(seleno~L~methio八泊e，SeMe)，通过预暴露和同时暴露途径，研究不同形态硒对翡翠贻贝累积无机汞和甲基汞伽曲ylinere切ryMeHg的影响，进一步探讨Se、Hg在海洋无脊椎动物体内相互作用的关系。

Phenyl or m -tolyl selenoamides reacted with functionalized α-haloacetic acid in 1∶1 or 1∶2 molar ratio with no catalyst in various alcohols to undergo a selenium transfer reaction. This reaction in dif-ferent molar ratios furnished the same C—Se—Se—C coupling products with a special structure bis diselenide. A new and facile method for synthesis of such bis(alkoxycarbonyl-methyl) diselenides with the advantages of mild reaction conditions, high yields, easy availability of starting materials and good chemical selectivity was provided.

芳基硒代酰胺与氯乙酸在各种醇中无催化剂下以1∶1和1∶2的比例投入，发生硒转移反应，不同原料投入比下的反应生成了同一种C—Se—Se—C偶联产物——具有多功能团的二烷氧羰基甲基二硒醚，提供了一种新的合成二烷氧羰基甲基二硒醚的简便方法，且反应具有条件温和、产率高、原料易得和选择性好等优点。

The results indicated that:①OVDP Rapeseed harvested 2382kg/hm2 shoot additively and 2219kg/hm2 oilseed, 8.1% less than conventional rapeseed which yielded oilseed singly.②The net income of OVDP rapeseed reached 5221.80 yuan / hm2, 1552.80 yuan /hm2 more than that of CK,or a growth of 42.3% over that of CK.③The shoot of double low rapeseed is rich nutrition ,it excelled in main nutrition indexes such as content of Vc,Ca,Zn,Se, and equalled in total soluble sugar,crude fiber except Iron content,while compared with Yongchuan Red Shoot.

结果表明：①油蔬两用栽培产菜薹2382kg/ hm2，产菜籽2219kg/ hm2，菜籽产量比单收菜籽栽培减产8.1%；②油蔬两用栽培纯收入5221.80元/ hm2，比单收菜籽栽培新增纯收入1552.80元/ hm2，增收42.3%；③甘蓝型双低油菜薹营养丰富，除铁的含量外，其维生素C和钙、硒、锌等微量元素含量明显高于白菜型红菜薹，可溶性总糖、粗纤维等营养指标与白菜型红菜薹相当。

What's more, we expanded the reaction to aliphatic ketones and aldehydes undersimilar conditions and found that these reactions led to dialkyl diselenides underatmospheric pressure in the absence of base in from moderate to good yields.

在相同条件下，把底物扩展到杂环醛，也得到了一类相应的新的对称的杂环二硒醚，同时，把底物扩展到脂肪醛和脂肪酮，在类似条件下，也合成了一系列对称的烷基二硒醚，产率从中等到良好。

Reaction of ketones with sodium diselenide and sodium hydrogen selenide under the catalysis of n-BuNH2 gave a moderate yield of diselenides in a "one-pot" fashion.

在正丁胺的催化下，酮与硒氢化钠、二硒化钠乙醇溶液通过&一锅&法反应得到了中等产率的二硒醚。

The function that the halobioses synthesize DHP AND EPA is transformed into the one of the genobenthoses, egg-hens. The eggs are rich in DHA and EPA,and a number of nutriments ,such as biological Selenium, chromium, zincum,ferrum, iodine, magnesium,sub-bronch amino acids, vitamins.

使用这种技术饲养的蛋鸡产下的蛋内富含了DHA和EPA以及易被人体吸收利用的生物态硒、铬、锌、铁、碘、镁、支链氨基酸、维生素、大豆异黄酮、β胡罗卜素等人体必需的多种营养成份。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。