脲

The distribution, properties,structure and regulation of plant allantoinase were reviewed in detail.

文摘：全面综述植物酰脲降解代谢酶的研究现况，概述植物尿囊素酶的分布、性质、结构，以及调节控制，并简介植物尿囊酸酰胺水解酶和脲基乙醇酸酰胺水解酶的研究近况，同时指出待研究的方向。

The condensation of 3 carbethoxy isoquinol 4 one with carbamidine, amidine, carbamide and sulfocarbamide gave isoquinolo pyrimidine derivatives, respectively and isoquinolo quinoline derivatives were synthesized by the reaction of o aminobenzaldehyde or o aminopiperonal with isoquinol 4 one.

报道了利用 3 乙氧甲酰基异喹啉 4 酮分别与胍、脒、脲及硫脲类化合物缩合反应合成异喹啉并嘧啶衍生物，邻氨基苯甲醛、邻氨基胡椒醛分别与异喹啉 4 酮反应合成异喹啉并喹啉化合物。6个新化合物的结构通过元素分析、红外光谱、核磁共振氢谱和质谱予以证

Oxidative stress and antioxygen in bacterial meningitis

可能的病原体有解脲脲原体和沙眼衣原体。

In this study, differences among tolerant capabilities of three species of nitrogen-fixation cyanobacteria (Anabaena azollae, Anabaena flos-aquae, Anabaena azotic) to two new sulfonylurea (Monosulfuron and Monosulfuron ester) were studied, which could be used to further explain the resistant mechanism to sulfonylurea herbicides and how these herbicides take effect.

本文以满江红鱼腥藻、固氮鱼腥藻及水华鱼腥藻为代表，利用环境毒理学的研究手段，通过研究3种固氮蓝藻对2种磺酰脲类除草剂---单嘧磺隆、单嘧磺酯的耐药性差异来揭示对磺酰脲类除草剂产生抗药性和耐药性的机理。

This thesis includes five parts as follows.1. The backgrounds and some relative concepts of this work are briefly introduced. The photochemistry of benzamides and compounds with thiourea functional group is also concisely reviewed.2. Total of fourteen benzamides with different substituted groups have been synthesized and structurally characterized. Better photoreaction time for that kind of compounds at given concentrations is confirmed by tracking its'UV spectrum and GC chromatogram. A representative dibenzophenone photoproduct has been determined by X-ray crystallography. The mechanisms of photoreaction of benzamide have been proposed.3. Total of seven N-chloro(phenylmethylenebenzenamines with different substituted groups and sixty-one thiourea derivatives have been synthesized and structurally characterized.

论文的主要内容如下：1、简要介绍本论文工作的研究背景，并对苯甲酰胺和具有硫脲官能团类化合物的光化学研究进展进行简要的总结。2、合成与表征了14个具有不同取代基的苯甲酰胺类化合物，利用紫外光谱和气相色谱确定了此类化合物较佳光照时间，测定了一个具有代表性光解产物的单晶结构，提出了苯甲酰胺类化合物的光反应机理。3、合成与表征了7个带有不同取代基的氯代苯甲酰亚胺中间体及61个硫脲衍生物，测定了两个具有代表性化合物的单晶结构。

Off-line HPLC coupled with MS gives the result that 4-chlorophenyl urea and 2-chloro-N-(4-chlorophenyl) benzamide are two photoproducts. In comparison with their retention times and UV specta with those of standards, some other photoproducts identified are 2-chloro benzamide, 4-chlorophenyl urea and 4-chloro aniline.

收集光解产物各级分，采用直接进样法在MS上测得其中的二种光解产物为对氯苯基脲和N-邻氯苯甲酰胺：通过与标样在同样HPLC条件下的保留时间和UV吸收光谱相对照，证明产物中存在有邻氯苯甲酰胺、对氯苯基脲和对氯苯胺等。

The photoproducts of CCU in organic solvents have also been identified with HPLC- and GC-MS. The photoproducts identified in methanol are isocyanato bezene, 4-chlorophenyl isocyanate, 2-chloro benzamide, chlorobenzene, 4-chlorophenyl urea, N-phenyl methylcarbamate, N-(4chlorophenyl) methylcarbamate, and 2-chloro-N-(4-chlorophenyl) benzamide.

对灭幼脲在各种有机溶剂中的光解产物作HPLC/UV和GC-MS鉴定，发现其在甲醇中的光解产物含有：异氰酸苯酯、对氯苯基异氰酸酯、邻氯苯甲酰胺、氯苯、对氯苯基脲、N-苯基氨基甲酸甲酯、N-氨基甲酸甲酯、以及N-邻氯苯甲酰胺等。

In this thesis, two series compounds of thiadiazole (2a~2f) and benzothiazole (5a~5f) were synthesized by using the reagent of iodobenzene diacetate. We also bound the iodobenzene diacetate reagent to the resin and applied it to synthesize thiadiazole and benzothiazole compounds.

本文利用二醋酸碘苯试剂分别与1-芳甲酰基-5-芳基-2-硫代缩二脲及1-芳甲酰基-3-芳基硫脲反应合成了噻二唑(2a~2f)和苯并噻唑(5a~5i)两个系列的杂环衍生物，并通过把二醋酸碘苯负载在高分子上合成了一类新型的固相氧化剂，同时考查了该固相氧化剂在噻二唑，苯并噻唑类化合物合成中的应用以及该固相氧化剂的循环使用。

A polyurethane which is obtained from ingredients comprising a high-molecular polyol, an organic polyisocyanate, and a chain extender comprising a specific trifunctional isocyanurate compound having an aromatic hydroxyl group and/or a benzylic hydroxyl group, and which has a crosslinked structure due to the isocyanurate compound.

从包含高分子量多元醇、有机聚异氰酸酯和扩链剂的成分得到的聚氨酯，所述扩链剂包括含芳羟基和/或苄羟基的特定三官能团异氰脲酸酯化合物，并且其由于异氰脲酸酯化合物而具有交联结构。

Results The highest drug use frequency was biguanide. There was 50.9% in the oral antidiabetic drug combination. Leading the first 3 places on the list of drug combination were sulfonylureas in combination with biguanide, sulfonylureas in combination with α-Glycosidace inhibitor, biguanide in combination with α-Glycosidace inhibitor, while there was 16.1% in 3 kinds combination. When oral antidiabetic drugs were combined with other drugs, combination with antihypertensives drugs led the fist, while with antihypertensives drugs led the second.

结果 二甲双胍使用频率最高，口服降糖药联合用药的比例高达50.9%，居前3位的依次是磺脲类＋双胍类、磺脲类＋α-葡萄糖苷酶抑制剂和双胍类＋α-葡萄糖苷酶抑制剂，而3种以上口服降糖药联合用药的比例也达16.1%；口服降糖药与其他药物联合使用情况看，配合使用抗高血压药的频率最高，其次是降脂药。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。