二酸的

Alkylamine reaction with dialkyl cyanodithioiminocarbonate was catalyzed by quaternary ammonium salts at room temperature to yield 3-alkylamine-5-amino-1,2,4-triazole in good quality and high yields. After imidization and reaction with an α,β-unsaturated acid derivative, the reaction intermediate was hydrolyzed in the presence of a Lewis acid to obtain the target product.

烷基胺与氰基亚胺硫代二甲酯在季氨盐催化作用下得到质量好、收率高的3-烷氨基-5-氨基-1，2，4-三氮唑，进一步经过亚胺中间体并与α，β-不饱和酸酯作用后，中间产物在Lewis酸催化作用下水解得到三唑嘧啶酮。

In peptides and proteins, the sulfur atoms of two cysteine molecules are bonded to each other to make cystine, another amino acid.

在和蛋白质中，二个半胱氨酸分子的硫原子彼此键合，而形成另一种氨基酸－－胱氨酸。

In peptides and proteins, the sulfur atoms of two cysteine molecule s are bonded to each other to make cystine, another amino acid.

在和蛋白质中，二个半胱氨酸分子的硫原子彼此键合，而形成另一种氨基酸－－胱氨酸。

In peptides and proteins, the sulfur atom s of two cysteine molecules are bonded to each other to make cystine, another amino acid.

在和蛋白质中，二个半胱氨酸分子的硫原子彼此键合，而形成另一种氨基酸－－胱氨酸。

In peptides and protein s, the sulfur atoms of two cysteine molecules are bonded to each other to make cystine, another amino acid.

在和蛋白质中，二个半胱氨酸分子的硫原子彼此键合，而形成另一种氨基酸－－胱氨酸。

After four weeks,the rats were killed by decollation after exhaustive running,and changes of in weight,Hb,Hct,the blood sugar,BLa,and the ultrastructure of skeletal muscle of rats,SOD,MDA,MLa,CK,MDH, ATPase index sign of the skeletal muscular tissue are tested.

四周训练完成后，一次性在跑台上跑至力竭后即刻断头处死，分别检测各组大鼠体重、血红蛋白、红细胞压积、血糖、骨骼肌超微结构、超氧化物歧化酶、丙二醛、肌乳酸、血乳酸、肌酸激酶、苹果酸脱氢酶、腺苷三磷酸酶指标的不同变化。

In the paper, the orientation behaviors of polyurethane film were investigated by means of infrared dichroism measurement.

采用红外二向色性法对聚四氢呋喃醚二醇/ 4 ，4′-二苯基甲烷二异氰酸酯系聚氨酯薄膜样品的拉伸取向行为进行了研究，结果表明，随着拉伸倍率的增大，CH2 角基团发生取向。

Methods: The analytical column was SHIMADZU VP-ODS C18 column(4.6 mm×150 mm 5 μm) with a mobile phase consisted of 0.05 mol/L disodium hydrogen phosphate solution(85% phosphoric acid solution with pH adjustment to 2.5)-acetonitrile-methanol(42.5∶47.5∶10) at the flow rate of 1.0 ml/min the detection wavelength was set at 254 nm.

目的：建立丙酸氯倍他索尿素乳膏中丙酸氯倍他索含量的HPLC测定方法。方法：色谱柱为SHIMADZU VP-ODS C18柱(4.6 mm×150 mm5 μm)流动相为0.05 mol/L磷酸氢二钠溶液(用85%磷酸溶液调节pH值至2.5)-乙腈-甲醇(42.5∶47.5∶10)流速为1.0 ml/min 检测波长为254 nm。

To investigate the pollution levels, occurrence and distribution of estrogens, six estrogens in the surface sediments of Wenyuhe River were analyzed quantitatively by GC/MS following ultrasonicated extraction including diethylstilbestrol, estrone(E1),β-estradiol(E2), 17α-ethynylestradiol(EE2), estriol(E3), and β-estradiol 17-valerate. Six estrogen concentrations ranged from 0.39-36.6ng/g and the mean concentration was 10.2ng/g.

为了调查温榆河沉积物中雌激素物质的污染状况，采用超声萃取、GC/MS法研究了6种常用雌激素（包括己烯雌酚DES、雌酮E1、雌二醇E2、乙炔基雌二醇EE2、雌三醇E3和戊酸雌二醇EV）在北京温榆河上游及干流表层沉积物中的含量水平，并对其分布及来源情况进行了分析。

The method was based on the aromatic hydroxylation of terephthalate by hydroxyl radical, produced from the homolysis of peroxynitrite in weak acid media, to yield a highly fluorescent product, 2-hydroxy-terephthalate, which was then detected fluorimetrically.

具体做法是将ONOO〓在pH 5.0的缓冲液中转化为其共轭酸ONOOH，而ONOOH本身不稳定，均裂生成·OH，·OH进攻对苯二甲酸生成强荧光产物2-羟基对苯二甲酸，利用荧光分析法测定2-羟基对苯二甲酸，从而间接确定ONOO〓的含量。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新