氧化合物

Flavone and pyrocatechol were chosento act as model compounds of different structure aspects of flavonoids and theirreactions with α-hydroxyl ethyl peroxyl radical were studied. The rate constants of thereactions of α-hydroxyl ethyl peroxyl radical with flavone and pyrocatechol weredetermined to be 〓 and 〓,respectively.

我们又选择了黄酮体和邻苯二酚作为黄酮类化合物的结构模型，用脉冲辐解的方法研究了它们与α-羟乙基过氧自由基的反应动力学，得到黄酮体和邻苯二酚与α-羟乙基过氧自由基的反应速率分别为〓和〓〓。

the target compounds synthesized to synthesize a series after 4 - instead of aniline - 6 -(2 - hydroxyl replace c oxygen radicals) quinazoline compounds has laid a good foundation.

目标化合物的顺利合成为以后合成一系列4-取代苯胺-6-(2-羟基取代丙氧基)喹唑啉类化合物奠定了良好的基础。

The goal of the successful synthesis of compounds for the subsequent synthesis of a series of 4 - to replace the aniline -6 -(2 - hydroxy replace C oxy) quinazoline compounds laid a good foundation.

目标化合物的顺利合成为以后合成一系列4-取代苯胺-6-(2-羟基取代丙氧基)喹唑啉类化合物奠定了良好的基础。

In the biological treatment, anaerobic biological treatment is used to reduce selenate ions and/or selenite ions presented in the raw wastewater to transfer to single insoluble selenium.

在生物法中，采用厌氧生物处理来降低原始废液中可溶的硒酸盐与亚硒酸盐，并转化为不溶性的单质硒，从而以不溶性单质硒的形式去除硒酸盐或亚硒酸盐；在絮凝沉淀法中，通常是向生物处理后的废水中加入一种金属盐，使该金属盐与可溶性硒反应并生成一种不溶性硒化合物，从而以不溶性硒化合物形式去除残留的可溶性硒；在过滤法中，将絮凝沉淀法中残留在废水中的不溶性硒去除，这样就能在不用大量化学药剂和不产生大量沉淀的情况下去除含硒废水中的可溶性硒。

Environmental contaminants, such as anthropogenic chlorinated compounds tri-chloroethylene and tetrachloroethylene, can be reductively dehalogenated to less chlorinated ethenes or innocuous compounds by micro-organisms through halorespiration under anaerobic condition.

中文摘要环境中的污染源像是三氯乙烯和四氯乙烯这些含氯碳氢化合物可在厌氧的环境之下，经由微生物的卤化呼吸作用将其进行还原性脱氯使其变成含氯较低的含氯碳氢化合物，或者无毒害性的物质。

CH3OH could attack the phosphor atom in 1,3,2-dioxaphopholane of compiound (1) to give O-methyl O-hydroxyethyl-O-phthalimidoethyl thiophosphate in 85% yield; in the presence of potassium hydroxide aryl selenol could attack the carbon atom in 1,3,2-diox-aphopholane of the cyclic phospholipid conjugate of N^1-(2-furanidyl)-N^3--5-fluorouracil to give the corresponding product of ring-opening in high yields.

在室温下，以异丙醇作溶剂，苯硒酚与化合物2不反应。在氢氧化钾存在下，以异丙醇／水作溶剂（体积比20：1，在室温下，硒酚可以有效地进攻中化合物2中1，3，2-二氧磷杂环戊烷中的碳原子生成相应的开环产物。按照这一反应条件，顺利实现了硒酚对N^1-（2-呋喃基）-N^3-羟烷基-5-氟脲嘧啶硫代环甘油磷脂缀合物的亲核开环，生成甘油骨架的端碳原子上带有芳硒基新颖的磷脂核苷缀合物。

Its active ingredient is the compound of different yellow ketone that gives priority to with element of the root of kudzu vine, this compound has outspread blood-vessel, improve heart head blood to circulate, reduce oxygen of cardiac muscle bad news, promote the secretion of saliva or body fluid stop to wait for pharmacodynamics action yearningly, have special curative effect to treating angina pectoris, migraine, paroxysmal deaf to wait.

其有效成分是以葛根素为主的异黄酮类化合物，该化合物具有扩张血管，改善心脑血液循环，降低心肌耗氧，生津止渴等药理功能，对治疗心绞痛、偏头痛、突发性耳聋等有非凡疗效。

With the same zirconium concentration,the absorbance of zirconyl oxyhalide solution (λ=664nm)prepared in HCl was larger than that from pure zirconyl oxyhalide solution.

发现对于相同锆浓度的溶液，高酸度的锆贮备溶液中的锆与偶氮胂Ⅲ形成的化合物的吸光度(λ=664nm)要大干仅由氧氯化锆配制的锆贮备溶液中的锆与偶氮胂Ⅲ形成的化合物的吸光度。

Formyl-3-acetyl-4-methyl-5-carbobenzoxypyrrole (6) was synthesized via the selective oxidation of 2,4-dimethyl-3-acetyl-5-carbobenzoxypyrrole (5), which was produced from acetylacetic benzylester (1) via nitrosation, reduction and addition-cyclization with acetylacetone. The total yield of the product was about 34%.

以乙酰乙酸苄酯(1)为原料，经过亚硝化、还原、与乙酰丙酮加成环化生成2， 4-二甲基－3-乙酰基－5-苄氧羰基吡咯(5)，通过选择性氧化反应制得目标化合物2-甲酰基－3-乙酰基－4-甲基－5-苄氧羰基吡咯(6)，反应的总收率约为34%。

The content of five free-anthraquinones (aloemodin, rhein, emodin, chrysophanol, physcion) in Alc95% active part were simultaneously determined by HPLC method.

其中7，3'-二羟基-5'-甲氧基异黄酮是自然界中罕见的B环为间位二取代的异黄酮类化合物，为新化合物。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！