羟基

The yield of the 3, 4-dihydropyrimidine-2(1H)-one was up to 95.4% under mole ratio of anisaldehyde, methyl acetoactate and urea is 1:2:5, ion-exchange membrane is 3 g, ethyl alcohol as solvent and refluxing for 2 h.

当对羟基苯甲醛、乙酰乙酸甲酯与脲的摩尔比为1：2：5，乙醇作溶剂，3 g离子交换膜，回流2 h，产物收率达95.4%。

Anisaldehyde was synthesized from p-hydroxybenzaldehyde with dimethyl carbonate by microwave irradiation under phase transfer catalyst tetrabutylammonium bromide, The effect of power, time, solvent and catalyst of reaction on yield were researched.

以四丁基溴化铵为相转移催化剂，采用对羟基苯甲醛和碳酸二甲酯为原料，微波辐射下合成大茴香醛。考察了反应溶剂、功率、时间和催化剂对反应产率的影响。

Methoxycarbonyl-4-(4-methoxyphenyl )-6-methyl-3, 4-dihydropyrimidine-2(1H)-one was synthesized from anisaldehyde, methyl acetoactate and urea in presence of HF-1O1 strong acidic ion-exchange membrane.

在HF-101强酸性离子交换膜的存在下，由对羟基苯甲醛、乙酰乙酸甲酯与脲一步合成了5－甲氧羰基－4－（4－甲氧苯基）－6－甲基－3，4－二氢嘧啶－2(1H)－酮。

A method for analysis of butyl hydroxy anisole in simvastatin had been established by HPLC.

建立了测定辛伐他汀中抗氧化剂叔丁基羟基茴香醚含量的高效液相色谱方法。

Aim To identify the drug-metabolizing enzymes involved in the hydroxylation of the new anti-inflammatory and anodyne imrecoxib.

目的 探讨新型抗炎镇痛药艾瑞昔布在人体内的羟基化代谢酶。

Water, Glycerin, Methylsilanol Mannuronate, Sodium Carboxymethyl Beta-Glucan, Sodium Hyaluronate, Palmitoyl Oligopeptide, Palmitoyl Tetrapeptide-7, Madecassoside, EGF *, FGF *, Telomerase *, Panthenol, Borago Officinalis Seed Oil, Anthemis Nobilis Flower Extract, Tocopherol, Tocopheryl Acetate, Cetyl Palmitate, Citrus Aurantium Dulcis Peel Oil, Citral, Citronellol, Limonene, Linalool, Zea Mays Starch, Butylene Glycol, PEG-40 Hydrogenated Castor Oil, Hydrolyzed Corn Starch, Hydrolyzed Corn Starch Octenylsuccinate, PEG-33, PEG-8 Dimethicone, Hydroxyethylcellulose, PEG-14, Xanthan Gum, Carbomer, Polysorbate 20, Caprylyl Glycol, Phenoxyethanol, Methylparaben.

主要有效成分是：聚羧基甲基β葡萄糖的钠盐，保湿锁水；透明质酸，高效保湿；寡胜肽；四胜肽；羟基积雪草甙，抗炎症，促进胶原蛋白的合成；表皮生长因子EGF，促进细胞新陈代谢；成纤维细胞生长因子FGF，促进胶原蛋白合成；端立酶，一种RNA与蛋白的复合体，可通过合成新的端粒而修补受损的DNA端粒，使细胞持续不停的增生，也就是利用成人干细胞转变为全新的细胞。维他命B5；琉璃苣籽油，含维他命和矿物质；洋柑橘萃取液，舒缓，抗过敏；维生素E；醋酸盐维生素E；橙皮油；水解玉米淀粉。

Therefore the investigation of Ca~(2+) deposited on TiO_2 surface is of great importance to the understanding of the mechanism and formation of bone apatite and hydroxyapatite on substrates.

因此，研究Ca~(2+)在TiO_2表面的沉积对探索羟基磷灰石和骨磷灰石在钛合金表面的形核、生长机制意义重大。

Two amino acid molecules associate in a side-by-side manner. Interactions involving hydroxyl group and apolar alkyl groups side-chains are significant in the pairwise association of amino acids.

氨基酸两分子间的结合主要是一种肩并肩的偶极吸引作用，羟基、非极性侧基均会参与相互作用。

With increasing ethanol content in mixed solvents,the dipolar attracting interactions between glycine molecules are maximumat 25% ethanol; the attracting interactions arising from hydroxyl groupsbetween L-serine molecules are also maximum at 25% ethanol; the repulsinginteractions involving apolar side-chains between L-valine molecules aremaximum at 15% ethanol.

当乙醇分子取代DMF时，使含羟基的极性侧链的吸引作用显著增强，使非极性部分的排斥作用的影响减弱。

With increasing DMFcontent in mixed solvents, the dipolar attracting interactions betweenglycine molecules increase; the attracting interactions arising fromhydroxyl groups between L-serine molecules increase rapidly; the repulsing interactions involving apolar side-chains between L-valine moleculeshave little fluctuate. By the present of ethanol, attractions arising fromhydroxyl groups increase obviously, repulsions arising from apolarside-chains decrease.

随溶液中DMF含量的增大，甘氨酸和L-丝氨酸两分子间的偶极吸引作用逐渐增大。L-丝氨酸羟基的吸引作用影响更加明显，因此增加速度较快。L-缬氨酸非极性侧基的排斥作用变化略有波动。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。