查询词典 A acid

Study on the Crystallization Process of Labeled GL-7-ACA Acylase CA130 Complex 7β-bromoacetyl amino cephalosporanic acid (BA-7-ACA), an analog of glutaryl-7-amino cephalosporanic acid (GL-7-ACA), can inhibit and specifically alkylate GL-7-ACA acylase (CA130) from Pseudomonas sp. 130, forming a carbon-carbon bond between BA-7-ACA and the C-2 on indole ring of Trp-β4 residue of CA130.Here we reported that BA-7-ACA labeled CA130 (BA-C130) could self-catalyze the hydrolysis of BA-7-ACA during crystallization process. The hydrolysis was confirmed to be a reaction analogous to the one of GL-7-ACA by comparative MALDI-TOF (matrix-assisted laser desorption/ionization-time of flight) spectrometry analysis.

二、GL-7-AcA酰化酶CA130标记复合物的结晶过程研究溴乙酰氨基头孢烷酸（7β-bromoacetyl amino cephalosporanic acid，BA-7-ACA）作为戊二酰-7-氨基头孢烷酸（GL-7-ACA）的类似物，不仅能够抑制GL-7-ACA酰化酶CA130的活力，而且能通过在BA-7-ACA和CA130的β亚基第四位色氨酸吲哚环二位碳原子之间形成碳-碳共价键而将CA130特异的烷基化。

The "no-fly pollution, clean health", including the human body needs calcium, phosphorus, iron, carotene, ammonium acid, niacin, ascorbic acid and various vitamins, has a high nutritional value, which in the human body VB17 can degrade to form benzaldehyde, and then into a acid and ammonium hydride, can inhibit cancer cells die and break, with a clear role in anti-cancer Cancer

该产品"无蚊蝇污染，干净卫生"，含人体需要的钙、磷、铁、胡萝卜素、硫铵酸、尼克酸、抗坏血酸及多种维生素，有很高的营养价值，其中VB17在人体内可降解成苯甲醛，进而转化成铵得酸和氢化物，能抑制和休死癌细胞，有明显的防癌治癌作用

Water,caprylic/capric triglyceride,mineral oil,butylene glycol,stearic acid,acetylated lanolin,glycerin,ethylhexyl methoxycinnamate,dimethicone,polyisoprene,triethanolamine,cyclopentasiloxane,butyl methoxydibenzoylmethane,titanium dioxide,persea gratissima oil unsaponifiables,sodium DNA,borago officinalis seed oil,oenothera biennis oil,simmondsia chinensisseed oil,hydrolyzed RNA,tocopheryl acetate,urea,hydrolyzed extensin,retinyl palmitate,sodium hyaluronate,helianthus annuusseed oil,tocopherol,ascorbyl palmitate,ascorbic acid,lanolin alcohol,c12-20 acid peg-8 ester,cyclotetrasiloxane,glyceryl stearate,dimethiconol,ceteareth-20,carbomer,magnesium aluminum silicate,propylene glycol,peg-8,silica,BHT,citric acid,phenoxyethanol,methylparaben,butylparaben,ethylparaben,isobutylparaben,propylparaben,chlorhexidine digluconate

水，辛酸/癸酸三酸甘油酯，矿物油，丁二醇，硬脂酸，乙醯化羊毛脂，甘油，4-甲氧基肉桂酸-2-乙基己基酯，地美司康，聚异戊烯，三乙醇胺，环戊硅氧烷，丁基甲氧基二苯甲醯基甲烷，二氧化钛，酪梨油，DNA 钠盐，琉璃苣種子植物油，月见草油，荷荷巴籽油，水解RNA，醋酸盐维他命E，尿素，水解伸展蛋白，维他命A酯，透明质酸钠，葵花籽油，维生素E，抗坏血酸棕榈酸酯，维生素C衍生物，羊毛脂醇，C12-20 酸 PEG-8酯，环四硅氧烷，甘油硬脂酸，聚二甲基硅氧烷醇，鲸蜡硬脂醇醚-20，卡波姆，硅酸镁铝，丙二醇，聚乙二醇-8，二氧化硅，二丁基羟基甲苯，柠檬酸，苯氧乙醇，羟苯甲酯，羟苯丁酯，羟苯乙酯，羟苯甲酸异丁酯，羟苯丙酯，洗必泰葡萄糖酸盐

Macrocidin A is a macrocyclic tetramic acid with herbicidal activity that isolated from the culture of Phoma macrostoma.In the second chapter of this thesis, our synthetic studies to macrocidin A were discussed.

Macrocidin A是加拿大化学家Graupner从Phoma macrostoma培养液中的代谢物分离得到环状乙酰型Tetramic acid天然产物，研究表明这类新的Tetramic acid化合物具有很强的除草活性。

The main results are as following:(1) Arabidopsis in planta transformation were made by Agrobacterium tumefaciens carrying the activation tagging vector pSKI015 with herbicide-resistant Bar gene as a selective marker. About 12 000 independent transformant lines were acquired by the above method, from which two mutants related to plant defense response and development, asr1 (auxin and .salicylic acid responsive 1.) and dai1 (brought tolerant and obscisic acid insensitive 1) were isolated.

本文以拟南芥为实验材料，以激发标签为技术平台，构建了拟南芥的功能获得突变体库，从中筛选具有抗病、抗逆表型的突变体，克隆基因并进行基因的功能研究，取得的主要结果如下：(1)利用含激发标签质粒pSK1015的农杆菌直接转化拟南芥植株，以抗除草剂的Bar基因为筛选标记，获得了约有12000个独立转化株系的突变体库，并从中筛选到2个与抗病、抗逆和发育相关的突变体asr1(auxin and salicylic acid responsive 1)和dai1(drought tolerant and abscisic acid insensitive 1)。

The simultaneous determination of sulfamic acid and DL-malic acid in environmental friendly electropolishing solution by ion chromatography was described. Sulfamic acid and DL-malic acid were well separated by using Metrosep A Supp 5 150 anion exchange column for separation and 3.2 mmol/L Na2CO3-1.0 mmol/L NaHCO3 as eluent.

采用Metrosep A Supp5150阴离子分离柱，以3.2mmol/L Na2CO3-1.0mmol/L NaHCO3为淋洗液，氨基磺酸和DL-苹果酸可得到很好的分离，使用离子色谱为检测手段可实现环保型电镀抛光液中氨基磺酸和DL-苹果酸的同时测定。

In this study, we determined that the antimutagenic properties of various tea extracts including green, oolong, pu-erh tea, and black tea and six polyphenols include rutin, quercetin, apigenin, gallic acid, umbelliferone, and tannic acid were examined by Ames test which is a widely applied short-term bacterial assay for detecting DNA damage effect of mutagen.

在本篇研究中，我们探讨利用Ames test的方法筛检不同品种茶类包括绿茶、乌龙茶、普洱茶、红茶和数种常见的多酚类化合物包括单宁酸tannic acid、gallic acid、rutin、umbelliferone、apigenin、quercetin对於抑制PhIP（2-amino-1-methyl-6-phenylimidazo(4，5-b)pyridine）和 2-AAF（2-Acetylaminofluorene）两种致突变剂的抗突变作用。

But both 20 years and 2 years old of pu-erh tea extracts show a strong inhibitory effects against 2-AAF. In addition, tannic acid, gallic acid, rutin, umbelliferone, and quercetin exhibited stronger antimutagenicities against PhIP than apigenin; while all of these polyphenols displayed inhibitory effect against 2-AAF.

而比较数种多酚类化合物发现，tannic acid、gallic acid、rutin、umbelliferone和quercetin对於抑制PhIP的抗突变作用比apigenin来的有效，但是apigenin和其他多酚类化合物对於抑制2-AAF的抗突变作用则均具有明显的抑制效果。

Green eggs with a shell of the egg is different from other nutritional content and structure of the green shell of the egg yolk than Cao Ji 8% of the large egg yolk, egg white thick, easily digested and absorbed by the body, egg yolk pigment Roche up to 13 About class (ordinary egg yolk pigment Roche for the general level 4 -5), lecithin, a living -A, B, E, amino acid content than the 5-10 times higherthanordinary eggs, the yolk of the egg ball ammonia β White and γ-globulin were higher than other kinds of chicken, the best is good tonic, Green Egg high-quality, nutritious, high-selenium, high zinc, high-PC PE, high Amino acid, high-vitamin A, E, the high non-saturated fatty acid, low-fat, low cholesterol, high Flavin light, the lightpigment αβγ and unknown immune globulin antibodiesanddiseaseresistantfactorisextremely desirable Health food, the scientists as "the ginseng eggs."

绿壳蛋具有不同于其它蛋品的营养结构和含量，绿壳蛋的蛋黄比草鸡蛋黄大8%，蛋清稠，极易被人体消化吸收，蛋黄色素可达罗氏13级左右（普通鸡蛋的蛋黄色素一般为罗氏4级-5级），卵磷脂、维生素A、B、E、氨基酸的含量比普通鸡蛋高出5-10倍，蛋黄中的氨β球蛋白和γ球蛋白均高于其它鸡种，是上等滋补佳品，绿蛋蛋品质高，营养丰富，含高硒、高锌、高卵磷脂脑磷脂、高氨基酸、高维生素A、E、高不饱合脂肪酸，低脂肪、低胆固醇、富含光黄素、光色素αβγ球蛋白和未知免疫抗体和抗病因子，是极为理想的保健食品，被科学家誉为&鸡蛋中的人参&。

After the coagulation and sedimentation in the jar test with ferric chloride, the residual COD in the supernatant was 9000 mg/L which was further oxidized by chloric acid or with Fenton method. The COD removal efficient increased with the increasing of the dosage of chloric acid from 0.5 ~ 100 g/L or the H2O2/Fe2+ from 5/2.5 ~ 50/25 g/L, and the economical dosage were suggested as chloric acid 50 g/L or the H2O2/Fe2+ 50/25 g/L which resulted in the residual COD of 400 and 3300 mg/L individually for 95 and 63 % COD removal percentages. Oxidation test showed that only 5 minutes was needed for 92 % COD removal in the case of chloric acid dosage 50 g/L.

废液A经氯化铁混凝沉淀后，COD浓度可降低至9，000mg/L，仍未符合符合工业区污水厂进厂限值(＜650mg/L)，进而使用氯酸钠直接氧化法及Fenton法以去除剩余之COD，其操作条件范围分别为氯酸钠加药量0.5g ~ 100g/L ，而最适加药量为50g/L，及Fenton法H2O2/Fe2+加药量范围为5/2.5g/L~50/25g/L，其最适H2O2/Fe2+加药量为50/25g/L，两种方法处理后残余COD浓度分别为400mg/L及3300mg/L，去除率约为95%及63%，而依此判断氯酸钠氧化处理残余COD有较好之效果，且利用氯酸钠氧化速率快，5分钟就能有92%去除率，所需水力停留时间较短，由此实验建议利用氯酸钠直接氧化处理，最适加药量为50g/L。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。