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From the ashes a fire shall be woken, A light from the shadow shall spring, Renewed shall be blade that was broken, The crownless again shall be king.
如果我没有记错的话,新浪的免费邮箱是不支持SMTP的,也就是说你要通过新浪的邮箱发邮件,就必须登录到新浪的邮箱页面,通过HTTP的方式发送。
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Comtemporary anthropological aesthetics results directly from the "culturological turn" in aesthetics, and the study on anthropological aesthetics and anthropology of art by Zheng Yuanzhe who is one of its outstanding representatives.
人类学美学是近些年来在国际上兴起的新的跨学科美学研究领域,由于它在美学新的研究对象的选择、新的美学形态的建构以及在提升中国民族美学地位上的巨大潜在价值,因而也受到中国学者的重视,部分学者对此展开了详尽的研究。
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Daniele Tognaccini will be in charge of the athletic structure, with the duty of trying new methods, new tests, new controls and new methods of work.
托尼亚奇尼会负责体能方面的训练,我们会尝试一些新的方法,新的控制和新的工作方法。
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Dedo, president of Jim said, The key is to have the name of a pleasant description of the symptoms, so people do not suffer in silence, feeling sick, drug-seeking only natural that ......
公司总裁吉姆·德多说,&关键是要有一个好听的名字描述症状,让人们不会讳疾忌医,觉得有病寻药再自然不过……只要有技术革新,就有新品牌,只要有新品牌,就有新症状描述,然后就有销售。&
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Three aspects were included here:The derivatives of dihydrol,2,4,5-tetrazine-3,5-dicarboxylic acid were synthesized via three different routes:(1) four new compounds were synthesized via the reaction bet ween dihydrol,2,4,5-tetrazine-3,5-dicarboxylic acid, thionyl chloride and corresponding alcohol ;(2) first ,dimethyl dihydro-1,2,4,5-tetrazine-3,5-dicarboxylate wer e synthesized, then ,another four new compounds were obtained t hrough the alcoholysis under the catalyst ;(3) three acylamines were got through the ammonolysis betw een dimethyl dihydro-1,2,4,5-tetrazine-3,5-dicarboxylate and amines.
本论文分别通过三条不同的路线合成了1,4-二氢-3,6-二甲酸-s-四嗪的衍生物:(1)通过1,4-二氢-3,6-二甲酸-s-四嗪与氯化亚砜和相应的醇反应,制备了四个新化合物;(2)合成1,4-二氢-3,6-二甲酸甲酯-s-四嗪,在催化剂的作用下,与高沸点的醇进行酯交换反应,合成了四个新化合物;(3)合成1,4-二氢-3,6-二甲酸甲酯-s-四嗪后,与胺进行氨解反应,合成三个新的1,4-二氢-3,6-二甲酰胺-s-四嗪化合物。
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The chapter two was focused on the samarium diiodide promoted organic reactions and their applications in organic synthesis, firstly, a new synthesis of highly substituted cyclopentadienes from a,β-alkynone promoted by samarium diiodide was investigated and the highly substituted cyclopentadienes were prepared in moderate to good yields under mild conditions. Secondly, the Michael addition and Michael-aldol tandem reaction of diorganyl diselenides or diorganyl disulfides with α,β-alkynones mediated by samarium diiodide were studied and a series of alkenylsulfides and alkenylselenides were prepared in good yields. Then the highly regioselecfive nucleophilic addition of the allylsamarium bromide to α,β-alkynones were explored. We found that the allylsamarium bromide reacts with α,β-alkynones to afford regiospecificly 1. 2-nucleophilic addition products in good yields under mild condition. At last we studied the coupling reaction of aryl halides promoted by NiCl〓/PPh〓/Sm〓.
第二章 研究了二碘化钐、金属钐促进的有机反应:1、二碘化钐促进下α,β-炔基酮的偶联环化反应,提供了一种制备多取代环戊二烯的新方法;2、二碘化钐促进下的二硫醚、二硒醚与α,β-炔基酮的Michael加成反应,为高产率地制备多取代的烯基硫或烯基硒化合物提供了方便可靠的新方法;3、二碘化钐促进下的二硫醚、二硒醚与α,β-炔基酮和醛、酮的Michael—aldol串联反应,提供了一种一锅法高产率地制备多取代的含硫的烯丙基醇或含硒的烯丙基醇类化合物的方便可靠的原子经济性的新方法;4、烯丙基溴化钐与α,β-炔基酮的高度区域选择性的1,2-亲核加成反应;5、NiCl〓/PPh〓/Sm〓促进的卤代芳烃的偶联反应-一种从各种卤代芳烃制备联苯类化合物的有效方法。
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This paper studied two new processes for catalytic synthesis of decabromodiphenyl ether which were carried out distinguishingly by brominating diphenyl oxide with bromine and bromine chloride in the presence of a novel metal catalyst.
本文研究了采用新型金属型催化剂催化合成十溴二苯醚的溴素法和氯化溴法两种新工艺;利用均匀实验设计和单纯形优化试验技术对两种新工艺的工艺条件进行了优化研究,分别确定了两种工艺路线的最佳工艺条件;通过筛选,确定了一种十溴二苯醚的精制新工艺。
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As a part of a search for new antitumor agents from Chinese medicinal plants, the roots of Salvia prionitis, collected in Jiangxi Province, was investigated. From the roots of this plant, a new diterpene, saprirearine (95), a new anhydride-type compound, saprionide (96), a new 7, 8-seco-abietane diterpene derivative, 7, 8-seco-paraferruginone (99), and a new 4, 5- seco-5, 10-friedo-abietane diterpenoids, 3-keto-4-hydroxysaprorthoquinone (102), have been isolated along with 6 known compounds. Their structures were established by spectroscopic methods and chemical transformation.
在对红根草的乙酸乙酯提取物进行分离,纯化和结构研究中,共得到10个化合物,其中4个是新化合物,3个新化合物具有新颖的重排松香烷型二萜骨架,新化合物99为首次从本属植物中分得的7,8-开环的松香烷型二萜醌类化合物。
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To develop new reactions, new compounds and new materials is always the effortful direction of chemical workers, and to obtain valuable products by using compounds which are existing, easily available and cheap is our pursuing goal all the time.
新反应、新物质和新材料的开发一直是化学工作者们努力的方向,利用现有的、易得的和低成本的原料制备出实用的化合物始终是我们追求的目标。
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Otto Octavius into a monster, the egomaniacal scientist will stop at nothing until he exacts the ultimate revenge on the one he holds responsible for humiliating him: Spider-Man.
l?nen如是说。&新关卡,新角色和新情节的结合,蜘蛛人的爱好者会找到将他们留在游戏世界中的足够理由。&
- 推荐网络例句
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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.
随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。
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But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.
不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。
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Closes the eye, the deep breathing, all no longer are the dreams as if......
关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。