查询词典 chemical method

This paper aimed at present status that most researches assembled in chemical products, adopted different determine methods, represented the transformation characteristic of nitrogen among water and soil of the sulphureous urea, confirmed the nutrient release speed, found out the optimum determine method in agricultural production application.

针对目前对缓释肥料释放特性的研究集中在化工制作领域这一现状，采用不同的测定方法，阐明含硫尿素中的养分氮在水及土壤中的转化特点，确定养分的释放速率，以求找出适合农业生产应用的方法。

The present invention provides a treatment method of non-ionogenic surface-active agent waste water, relates to the field of organic chemical waste water treatment technology.

本发明提供了一种非离子表面活性剂废水的处理方法，涉及有机化工废水处理技术领域。

HPLC, and its chemical structure elucidated on the basis of spectral analysis. A new method of RP-HPLC was established for the analysis of the contents of oleuropein, which is the main effective constituent. The contents of oleuropein in different positions of Syringa pubescens Turcz.

建立了测定橄榄苦甙含量的RP-HPLC法，并且利用这种方法测定了小叶丁香的不同部位——花、叶、茎和根之中的橄榄苦甙的含量；测定了不同条件下培养所得的培养物中橄榄苦甙的含量；测定了伴生菌培养物中橄榄苦甙的含量。

objective: searching for the treatment which prevents the recurrence of the urinary bladder carcinoma after excision.method:according to the consequence of sensitive test ,we poured chemical medicine into artery before and after the operation ,injected mitomycin c into the tela submucosa after the excision of carcinoma during the operation and pour medicine into bladder regularly after operation.result:in all the 65 specimen group,60 got following investigation more than 3 years,the rate was 92.3%.and 4 recured in 19,27,37,43 months after operation.the rate of recurrence was 6.7%.

作者单位：(1。山东省青岛市中心医院，山东青岛 266042 2。山东省青岛市肿瘤医院，山东青岛 266042)目的：探讨膀胱癌切除术后预防肿瘤复发的治疗方案。方法：依据抗癌药物敏感试验结果，在手术前后进行动脉灌注化疗，术中切除肿瘤后于膀胱粘膜下注射丝裂霉素c和术后定期膀胱内灌注。

Pass the method that designed a layer of heavy chemical element plasma in the outer circle of the D-T plasma , making the time extension of the thermonuclear fusion reaction .

通过在氘氚等离子体的外围设计一层由重元素离子组成的等离子层的办法，使热核聚变反应的时间得以延长。

There also was a shortage of this method that it could only screening the chemical which disrupt thyroglobulin.

此方法的不足之处在于不能甄别那些通过其他途径干扰甲状腺功能的化学物，如多氯联苯类。

The influence of ethanol, isopropanol and mixture thereof used during the polyanionic cellulose manufacturing on the structure of alkali cellulose and PAC was studied by means of X-ray diffraction, microscope, 1H-NMR and chemical titrimetry method.

采用X射线衍射与显微镜分析技术研究了天然棉纤维素在乙醇、异丙醇、乙醇－异丙醇等不同有机介质中碱化时，纤维素的润胀程度、吸附碱量及结构参数的变化。

Phenyl or m -tolyl selenoamides reacted with functionalized α-haloacetic acid in 1∶1 or 1∶2 molar ratio with no catalyst in various alcohols to undergo a selenium transfer reaction. This reaction in dif-ferent molar ratios furnished the same C—Se—Se—C coupling products with a special structure bis diselenide. A new and facile method for synthesis of such bis(alkoxycarbonyl-methyl) diselenides with the advantages of mild reaction conditions, high yields, easy availability of starting materials and good chemical selectivity was provided.

芳基硒代酰胺与氯乙酸在各种醇中无催化剂下以1∶1和1∶2的比例投入，发生硒转移反应，不同原料投入比下的反应生成了同一种C—Se—Se—C偶联产物——具有多功能团的二烷氧羰基甲基二硒醚，提供了一种新的合成二烷氧羰基甲基二硒醚的简便方法，且反应具有条件温和、产率高、原料易得和选择性好等优点。

The aim was to analyze the function of gene by bioinformatics method. The physical and chemical characteristics, structure and function of Na(superscript +)/H(superscript +) antiporter gene TaNHX1 on the tonoplast membrane in wheat were predicted through analysis by the software from bioinformatics data base and internet.

［目的］利用生物信息学方法分析基因的功能，［方法］通过生物信息学数据库和因特网上的软件进行分析，对小麦液泡膜Na/H反转运蛋白基因TaNHX1的理化性质、结构与功能进行了预测。

Methods Fungus, trichomonad, germs, anaerobic bacteria Gardinerella was detected for sialidase by chemical reaction; Gold colloid method was adopted to detect the antigen of chlamydia trachomatis.

真菌、滴虫、各种细菌、厌氧菌、支原体采用体外培养和生化反应的方法进行培养和鉴定，加德纳菌采用化学反应的方法检测唾液酸酶，沙眼衣原体采用金标法检测其抗原。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。