羟基酮

A process for an enzymatic production of vitamin B6 which comprises incubating 1-deoxy-D-threo-pentulose and 4-hydroxy-L-threonine with an enzyme reaction system prepared from cells of microorganism belonging to genus Rhizobium, Sinorhizobium, Flavobacterium, Chryseobacterium, Lactobacillus, Arthrobacter, Bacillus, Klebsiella, Escherichia, Pseudomonas, Stenotrophomonas, Enterobacter, Serratia, Corynebacterium, Brevibacterium, Exiguobacterium, Saccharomyces, Yamadazma, Pichia and Candida, in the presence of NADP+, NAD+, ATP.

一种维生素B6的酶促生产方法，包括在NADP＋、NAD＋、ATP的参与下，将1－脱氧－D－苏－戊酮糖和4－羟基－L－苏氨酸与从属于以下属的微生物细胞制备的酶反应体系一起温育，所述微生物属是根瘤菌属、中华根瘤菌属、黄杆菌属、金黄杆菌属、乳杆菌属、弓形菌属、芽孢杆菌属、克雷伯氏菌属、埃希菌属、假单胞菌属、寡养单胞菌属、肠杆菌属、沙雷氏菌属、棒杆菌属、短杆菌属、微小杆菌属、酵母属、Yamadazma、毕赤酵母属和假丝酵母属。

MIPC was photocatalytically transformed to 3,4-dihydroxyl hypnone, 2-iso-butyl phenol and acetic acid, and mineralized ultimately in oxygenated TiO2 slurries. The photocatalytic degradation processed according to first order kinetics with the apparent rate constant depending on initial concentration, light intensity and the amount of catalyst. The amount of catalyst had an optimum value (0.5g/L). The apparent rate was inversely proportional to square root of the initial concentration approximately.

MIPC能被光催化转化成3，4-二羟基苯乙酮、2-异丁基苯酚和乙酸等产物并最终被矿化，MIPC的光催化反应过程符合一级动力学规律，其表观速率常数与MIPC的起始浓度、TiO2量和光强等因素有关，MIPC降解的反应速率与入射光强成正比，与MIPC初始浓度的平方根成反比。

Saussurea involucrate is a well-known Chinese herbal which holds many therapeutic effects. Folk applications include easing rheumatoid arthritis, free-radical clearance, anti-tumor and anti-hypertension.

中文摘要近年来雪莲对抗风湿、镇痛、强心、抗癌、降压、平喘、清除自由基及抗疲劳等药理研究取得了可喜进展，其成分主要含多羟基黄酮类化合物，具有明显的抗炎作用。

In ternary system of PGA/POH and HDI isocyanurate, there are twomain reactions: one forms urethane at 30-50℃, the other producesoxazolidone at 140-165℃.

聚丙烯酸环氧丙酯（PGA、聚丙烯酸羟丙酯（POH和HDI三聚体的三元反应体系中，醇羟基与异氰酸酯在30-50℃下反应可生成氨酯，环氧基团与异氰酸酯在140-165℃下反应生成噁唑烷酮。

Objective: To study the effection of 3-droxide isoflavone on colon cancer cell HT-29 in vitro.

目的：研究三羟基异黄酮在体外对结肠癌细胞株HT-29的作用。

The activated hydroxyl of the rare earth complex reacted with the -NCO of the of isophorone diisocyanate,and a new bonding-type rare earth polymer materials was prepared. We studied the optical property, thermodynamic properties of the materials were, and the results obtained show that the materials have high light transmittance and thermal stability as well as good fluorescence properties.

同时利用配合物的活性基团羟基与异佛尔酮－二异氰酸酯中的异氰酸根活性基团进行反应，制备出一种新型的键合型稀土高分子材料，并考察了该材料的光学性能、热力学性能等。

Sinomenine,7,8-didehydro-4-hydroxy-3,7 -dimethoxy-17-methylmorphinan-6-one,an isoquinoline alkaloid isolated from the stem and root of the Chinese medicinal herb, Sinomenium acutum Rehd.

青藤碱即7，8-二去氢-4-羟基-3，7-二甲氧基-17-甲基-9α，13α，14α-吗啡烷-6-酮是从植物青风藤Sinomenium acutum Rehd。

Hydroxy and α-keto amino acid analogs of diet in

中的α-羟基和α-酮基氨基酸同型物。

The influence of different modifier contents,n∶n,reaction temperature and reaction time on aliphatic aqueous dispersion of blocked polyisocyanate were discussed while using methyl ethyl ketoxime as blocker and monohydroxyl poly as hydrophilic modifier.

以甲乙酮肟为封闭剂，以单羟基聚环氧乙烷为亲水改性剂，分别考察了不同改性剂用量、n∶n、反应温度、反应时间对脂肪族水分散封闭型多异氰酸酯合成的影响。

From Whitmania pigra 10 compounds were isolated and structurally elucidated based on the spectral data, 9 of them were the firstly isolated from this species. They are choles-4-ene-3-one, uracil, succinic acid, hypoxanthine,xanthine, octadecanoic and 2 polyhydroxy-saturated fatty acid.

五对宽体金线蛭的化学成分进行了提取、分离、鉴定，从中分得10个化合物，其中9个为首次从该动物中分得，包括1个为甾体化合物胆甾-4-烯-3-酮、2个多羟基脂肪酸、琥珀酸、尿嘧啶、黄嘌呤、次黄嘌呤、脲苷、十八碳酸等。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。