1) precursor
[英][pri:'kɜ:sə(r)] [美][prɪ'kɝsɚ]
前体物
1.
EKMA graphs are obtained,which reveal a nonlinear relationship between O3 and its precursors VOCs(Volatile Organic Compounds)and NOx.
利用EKMA(Empirical Kinetic Modeling Approach)-经验动力学模拟方法及其内置的CB-IV化学反应机理对2000年夏季北京市近郊区光化学污染进行研究,得到了前体物VOC、NOx与O3之间的非线性关系,即EKMA曲线。
2.
It had been compared that the efficiency of control disinfection by-products and their precursors by two classes and total 7 kinds of process combination.
为实现在控制藻类的同时减少副产物生成量,比较了预氧化+常规工艺、预氧化+常规+深度处理2类共7种组合工艺对消毒副产物及其前体物的去除特性。
3.
It is compared that the efficiency of control disinfection by-products and their precursors by sequeutial-chlorination disinfection and traditional free chlorination disinfection following different processes combination.
为实现对消毒副产物的控制,比较了新开发的顺序氯化消毒工艺与传统氯消毒工艺在常规工艺、常规+深度处理工艺、预氧化+常规+深度处理工艺中对消毒副产物及其前体物的去除特性。
2) precursors
前体物
1.
Recent advances in research of TSNAs and their precursors;
烟草特有亚硝胺及其前体物研究进展
2.
Effects of nitrogen level on TSNA precursors content and nitrate reductase activities in flue-cured tobacco
氮用量对烤烟叶片TSNA前体物含量及硝酸还原酶活性的影响
3.
The correlation between O_3 and its precursors(NO,NO_2,CO) and related meteorological factors(solar radiation,temperature) was analyzed.
利用2003年夏季济南市区近地面大气O3、相关前体物和气象因素等观测数据,研究了O3浓度的分布特征及时间变化规律,分析了7月份O3与NO、NO2和CO等前体物及太阳辐射和气温气象条件的相关性。
3) precursors
前体物质
1.
Effects of Precursors on Biosynthesis of Coenzyme Q_(10) in Tobacco Cells
前体物质对烟草细胞辅酶Q_(10)合成的影响
2.
The variation of chicken flavor precursors concentration in heating was studied in this paper.
对比了鸡肉风味前体物质在加热过程中的变化 ,结果表明 ,在加热过程中 ,还原糖总量呈下降趋势 ,可溶性氮总量稍有增加 ,IMP(5’ 磷酸肌苷 )和GMP(5’ 磷酸鸟苷 )的总量则呈先增加后下降 ,呈鲜味的天门冬氨酸和谷氨酸含量持续增加 ,呈甜味的甘氨酸的含量也在增加 ,重要的肉类风味前体物含硫氨基酸———蛋氨酸和半胱氨酸则出现先增加后减少的现象 ,鸡肉中的不饱和脂肪酸 ,特别是亚油酸 ,在加热过程中趋于减少 ,而饱和脂肪酸的含量则变化不大。
3.
The form of precursors and flavor of beef are discussed, chemical classification of theflavor is introduced and some characteristic compounds in flavor substance of beef are emphatically approached.
论述了牛肉风味前体物质，风味物质的形成途径，介绍了牛肉的风味成分及其化学分类，并对牛肉风味物质中的一些特征化合物进行重点探讨。
4) prodrug
[英]['prəʊ,drʌg] [美]['pro,drʌɡ]
前体药物
1.
Design,synthesis and antitumor activity of ATRA and butyric acid or valproic acid prodrugs;
全反式维甲酸-正丁酸(丙戊酸)前体药物的设计、合成及抗肿瘤活性研究
2.
Preparation of curcumin prodrugs and their anti-tumor activities in vitro;
姜黄素前体药物的合成及其体外抗肿瘤活性研究
3.
Studies on the Stereoselectivity in Transdermal Permeation and Metabolism of Ketoprofen Prodrugs;
酮洛芬前体药物皮肤渗透代谢的立体选择性研究
5) precursor
[英][pri:'kɜ:sə(r)] [美][prɪ'kɝsɚ]
前体物质
1.
The effect of precursor and C & N source feeding strategy on L-Arginine production by Corynebacterium crenatum SYAN7 was studied.
研究了前体物质和碳氮源补加策略对钝齿棒杆菌Corynebacterium crenatum SYAN7发酵生产L-精氨酸的影响。
2.
Effect of cultivative time and precursor \$p\$\|hydroxybenzoate on ubiquinone yield was investigated.
并利用表达泛醌合成基因的大肠杆菌培养过程中泛醌含量的变化以及添加前体物质对提高大肠杆菌泛醌合成量进行了初步研究 ,确定了稳定生长前中期是生物体中泛醌含量最高时期 ,引进泛醌合成的外源基因以及在培养基中添加 0 。
3.
Combining with the selection of anti-precursors mutants(valine and D-deoxy-glucose resistance), the high-producing avermectin strain AV-03-35 was obtained.
在分离培养基中分别加入不同体积分数的缬氨酸和D-脱氧葡萄糖作为前体物质进行正突变株的定向筛选,选育得到阿维菌素高产菌株AV-03-35,其摇瓶发酵效价达到4695u/mL,较出发菌株提高15。
6) mineral precursor
矿物前体
1.
Absorption reaction of two types of mineral precursor was experimentally researched.
通过两类矿物前体对A s(Ⅲ)阴离子的吸附反应的实验研究发现:这两类矿物前体在吸附反应过程中pH值均发生了明显变化,它们对A s(Ⅲ)的吸附均属于化学吸附。
补充资料：体物
1.生成万物。 2.描述事物;摹状事物。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条