羟基酸

This specific preparation methods including: parathion of the initial reaction in acid and zinc metal in the common under redox reaction, a product of the reduction of parathion - parathion, with the sodium nitrite in the cold under diazotization reaction, and bovine serum protein tyrosine on the o-hydroxy combination of the adult immune original and immune rabbit polyclonal antibody preparation.

本发明制备方法具体包括：以对硫磷为反应初始物，在酸和金属锌的共同参与下进行氧化还原反应，得对硫磷还原产物对氨基对硫磷，再与亚硝酸钠在低温下进行重氮化反应后，与牛血清蛋白酪氨酸上羟基的邻位结合，制备成人工免疫原，并免疫新西兰大白兔制备多克隆抗体。

Fluoride to prevent cavities there are several ways: to hydroxyapatite into fluorapatite difficult to dissolve and reduce enamel in acid in the soluble; to a direct impact on dental plaque and reducing plaque organisms secrete acid capacity; accelerated by acidic substances are due to decalcification of the tooth enamel erosion and mineral parts of recharging it.

氟化物以防止蛀牙，有几种方法：对羟基磷灰石成难溶于和减少酸，可溶性搪瓷；在对牙菌斑产生直接影响，减少牙菌斑生物分泌酸能力；的酸性物质加速是由于脱钙的牙齿釉质侵蚀，它的充电矿产部分。

Acid catalyst and H + catalysis in the acid catalysts were studied for synthesis of methyl glycolate via coupling of methyl formate and trioxane in a microform high-pressure autoclave(120mL).

在微型高压反应釜中(12 0ml)，考察了酸催化三聚甲醛和甲酸甲酯制备羟基乙酸甲酯的偶联反应，并对酸催化剂中H+的作用进行了研究。

The synthesis methods of nipagin esters catalyzed by sulfuric acid , p- toluene sulfonic acid , ferric sul-fate hydrate, ferric chloride hexahydrate, aluminium chloride hexahydrate, rare earth compound, solid super acid and heteropoly acid were reviewed.

评述了采用硫酸、甲苯磺酸、合硫酸铁、水合三氯化铁、水合三氯化铝、土化合物、体超强酸和杂多酸等催化剂催化合成对羟基苯甲酸酯的方法。

The activity of pyruvate formate-lyase and pyruvate dehydrogenase accounts for the observed production of formate, acetate, ethanol and acetoin. In 1978, Hillman isolated one of the mutants of Streptococcus mutans which lack the enzyme activity of dehydrogenase.

当外源性糖丰富的时候，果糖-1，6-二磷酸增加，使LDH活化，90%以上的葡萄糖被转化为乳酸；外源性糖供应不足时，通过丙酮酸甲酸裂解酶和丙酮酸脱氢酶作用产生甲酸、乙酸、3-羟基丁酮和乙醇。

The 5 type of HA have different values of E465/E665, ranging from 3 to 5. They belong to the category of HA with a large number of molecules. Among them, the Forest Soil HA from Jingyun Mountain has the maximum amount of E465/E665, which means that it has the minimum extent of humification, benzene derivative in HA and molecule complexity.

红外光谱分析表明：供试5种不同土壤腐殖酸红外光谱均出现相似的吸收峰，反映出它们具有相似结构，均含有苯环和酚羟基官能团；但不同腐殖酸的红外光谱也有一定差异，2900cm~(-1)，1720cm~(-1)、1(来源：bcABb1C论文网www.abclunwen.com)520cm~(-1)、1366cm~(-1)。

Our company treasures technical innovation and development of new products. On the basis of stable food grade,pharmagrade glycine,we have also developed compound amino acid,4pyridone,hydantoin and Nbenzylglycine ethyl ester etc.

本公司十分注重技术创新和新产品开发，在稳定食品级，医药级甘氨酸等老产品生产的基础上，又开发了蚕蛹复合氨基酸，4羟基吡啶，海因，N苄基甘氨酸乙酯等产品。

Orange in the flavonoids in the intestine into hydroxy benzoic acid and ferulic acid, which can strengthen the role of thyroid suppression thiocyanate, which induce or cause goiter.

橙色的黄酮类化合物在肠道成羟基苯甲酸和阿魏酸，可加强硫氰酸抑制甲状腺，而诱发或导致甲状腺肿大的作用。

Although sulfuric group can ionize at any pH value, but the ionization degrees of carboxylic and phenolic group in the solutions increase with increasing pH values.

磺酸在所有pH范围完全电离，但羧酸和酚羟基的电离程度随溶液pH降低而减少。

These are mixtures of mono- and di-esters of 3-substituted4-hydroxycinnamic acid and quinic acid, a sugar-like molecule.

这些是单酯，双酯，三代，四羟基苯乙烯酸以及奎宁酸的混合物，一种类糖的分子。

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。

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。