naturally-occurring substance是什么意思

用法例句

Flocculant preparation based on chitose compounded with 4 natural materials and its effectiveness of treatment for monodium glutamate wastewater;

壳聚糖与4种天然物质的絮凝复配及其对味精废水的处理效果

Objective To investigate the relationship between nitric oxide synthase (NOS) activity and schizophrenia.

目的通过测定首发精神分裂症患者和正常人的血清一氧化氮合酶 (NOS)活性 ,比较和分析他们之间的差异 ,探讨 NOS活性以及一氧化氮 (NO)能神经系统的功能变化与精神分裂症的关系。

After 24 hours once exhaustive exercise the concentrations of nitric oxide in kidney,serum urea nitrogen,serum creatinine,urinary protein and nitric oxide synthase activity are determined.

一次性跑台力竭运动后24 h取材,检测肾组织NO含量、NOS活性和血清尿素氮、血清肌酐、尿蛋白含量,透射电镜观察肾细胞凋亡等病理变化。

Influence of Ampelopsin on NO/NOS Level and Antioxidant Capability of Type 2 Diabetic Rats;

蛇葡萄素对2型糖尿病大鼠NO/NOS水平及抗氧化能力的影响

Clinical value of the detection of NSE and NO/NOS in serum and spinal fluid after seizure in children;

121例血清和脑脊液中NSE和NO/NOS检测在小儿惊厥中的临床价值

The content of NO/NOS of the lung tissue were detected by the method of nitric acid reductase.

方法:采用卵白蛋白致敏复制大鼠哮喘模型,通过整体、离体实验,观察喘复康合剂对致敏大鼠气道反应性的影响;并通过硝酸还原酶法测定肺组织中NO/NOS含量的变化。

Effect of electroacupuncture on NO,NOS and ET-1 in serum of rats with acute cerebral ischemia;

电针对急性脑缺血大鼠血清NO、NOS、ET-1的影响

CHANGES OF NITRIC OXIDE(NO) CONTENT AND NITRIC OXIDE SYNTHETASE(NOS) ACTIVITY IN CEREBRAL CORTEX OF MICE WITH SUBACUTE SENESCENCE;

亚急性衰老小鼠脑皮层NO含量和NOS活力的变化

Expression of NOS and HIF-1α in colorectal carcinoma and their relation to angiogenesis;

组织芯片检测大肠癌中NOS、HIF-1α的表达及与血管生成的关系

The Study of HO/CO and NOS/NO during Hepatopulmonary Syndrome;

内源性HO/CO系统和NOS/NO系统在肝肺综合征发病中作用的实验研究

In order to obtain transgenic rice which express exogenous IPT gene in developing seed and to further investigate the function of cytokinin in rice seed development,we constructed the binary vector pCAMBIA1300-pRP-6-IPT-Nos.

以含有IPT基因的中间载体pSG516为基础,采用酶切的方法获得IPT-Nos核酸片段,以水稻品种9311为材料,采用PCR的方法克隆出种子中特异表达的醇溶谷蛋白RP-6基因启动子,并将此启动子连接到pCAMBIA1300上,构建pCAMBIA1300-pRP-6载体,将IPT-Nos核酸片段插入到pCAMBIA1300-pRP-6,构建了pCAMBIA1300-pRP-6-IPT-Nos双元表达载体。

Objective To establish the screening method of detecting genetically modified food in food stuffs by PCR amplifying the camv 35?S pr omoter and nos terminator.

方法　用改良溴化十六烷三甲基铵 (CTAB)法制备转基因抗除草剂〔大豆RoundUpReadyTMSoybean(RRS)〕和转基因抗虫玉米系列标准品Bt176Maximaizer的DNA ,PCR检测其内参照基因及camv 35S启动子和nos终止子。

Methods The presence of GMO were investigated by PCR detection of camv 35S promoter and nos terminator, and the presence of RoundUp Ready TM Soybean (RRS), Bt176 Maximaizer or Mon810 YieldGard in GMO-positive samples were further determined by PCR detecting their specific DNA fragments respectively.

方法通过PCR检测camv35S启动子和nos终止子,筛选食品中是否含转基因成分,并进一步通过PCR检测RoundUpReadyTMSoybean(RRS)、Bt176Maximaizer和Mon810YieldGard的特异DNA片段,判断是否含这三种成分。

The fragment of NOS terminator was obtained through the operating of DNA isolation and polymerase chain reaction(PCR)amplification from genetically modified tobacco.

以转基因烟草为材料,通过DNA提取、PCR扩增获得NOS终止子片段产物,以重叠延伸扩增法制备该片段的竞争性模板,并进行酶切验证。