NIF

For further exploring and studying the expression and regulation of nif genes , we carried out site-directed mutagenesis on a crucial tyrosine residue of the positive regulator protein NifA .

在全基因组测序和芯片分析的基础上，为进一步探讨和研究A1501固氮基因的转录调控机制，本研究开展了正调控蛋白NifA一个关键位点的定点突变分析。

Recent Progress of NIF Injection Laser System

NIF注入激光系统最新进展

Resource utilization and operation time are especially sensitive when the NIF structures are larger .

当NIF结构变大时，对资源使用和操作时间的影响尤为明显。

Those beginning with NIF typically deal with views and collections .

而那些名称以NIF开头的函数通常用来处理视图和集合。

Objective : To observe the effect of NIF on proliferation and apoptosis of gingival epithelial cells .

目的：通过观察硝苯地平（NIF）对牙龈上皮细胞增殖和凋亡的影响，探讨硝苯地平致龈增生的机理。

Although the NIF is designed to reach breakeven , its primary mission relates to national security .

尽管NIF是设计用来达到能量的收支平衡的，但是它的最初的任务是和国家安全相关的。

NIF will be able to create conditions and conduct experiments never before possible on Earth , according to the laboratory .

据该实验室称，NIF激光器将能产生出的环境、能进行的试验都在过去在地球上都是不可能的。

CONCLUSION : The improvement of cardiovascular function caused by Nif was not affected by the presence of Asp .

结论：Asp不影响Nif改善心血管功能的作用。

Spanish NIF The Fiscal Identification Number ( NIF ) is a tax identification number used in Spain .

西班牙NIF财务标识号（NIF）是西班牙使用的税务标识号。

But the degree of calcium concentration and the severity of histologic Lesions were markedly decreased in Nif group .

Nif降低钙含量，减轻胰组织损害程度。

No marked difference in potency between m-Nif and Nif was observed .

m-Nif和Nif在作用强度上无显著差异。

Role of the Heterologous nifA C Product in the Regulation of nif Expression in Agrobacterium tumefaciens

异源nifA~C对根癌土壤杆菌nif基因表达的调节作用

The data shows exponential growth rates for UPDATE_NOTE and NIF operation times as the number of documents in the inbox grew .

数据表明，当收件箱的文档增长时，UPDATENOTE和NIF操作时间呈指数级增长。

Construction of the NIF began in1997 , funded by the US Department of Energy National Nuclear Security Administration ( NNSA ) .

建造NIF是从1997年开始，受到美国能源部国家核安全管理局（简称，NNSA）的资助。

The structure and regulation of nif genes in Azospirllum brasilense is reviewed in this article .

本文对巴西固氮螺菌固氮基因的结构和调控进行综述。

The effect of nifedipine ( Nif ) was assessed on calcium concentration in pancreatic tissue and mitochondria in rats with acute pancreatitis ( AP ) .

实验观察硝苯地平（Nif）对急性胰腺炎（AP）大鼠胰组织钙、线粒体钙含量影响。

In the National Ignition Facility ( NIF ) research program , KDP crystal has been studied on single point diamond turning ( SPDT ) for getting optical surfaces .

在国家点火装置（NIF）的研究中，经常采用单点金刚石切削（SPDT）加工KDP晶体以获得超光滑表面。

NIF is a novel anti-inflammatory agent , which blocks the adhesion of activated human neutrophils to vascular endothelial cells as well as the release of H2O2 from activated neutrophils .

NIF是一种新型抗炎因子，它能专一地结合人中性白细胞膜上的整合素CD11b/CD18，从而抑制活化的中性白细胞释放H2O2以及粘附血管内皮细胞，以此减轻中性白细胞介导的组织损伤。

Near infrared fluorescence ( NIF ) of lanthanide complex has the advantage of high transparency in optical fiber and low spectral interference , and has potential application in optical fiber communication and spectral analysis .

稀土配合物的近红外发光具有在光纤材料中透过率高，光谱干扰少的优点，在光纤通讯和光谱分析领域具有重要的应用前景。

This setting controls the size of the NSF buffer pool , a section of memory dedicated to buffering I / O transfers between the NIF indexing functions and disk storage .

这个设置控制NSF缓冲池的大小，后者是用于缓冲NIF索引函数与磁盘存储之间的I/O传输的一部分内存。

ITER and NIF , the government groups , are taking a more " conventional " fusion approach , aspiring to drive turbines with heat released by fusing isotopes of hydrogen .

ITER和NIF这两大政府机构则采取了更加“传统”的核聚变方案，也就是通过融合氢的同位素氘和氚和释放热量，从而驱动汽轮机发电。

The Induction of Nitrogenase by MSX in A GOGAT Mutant ( Nif - ) of Rhodopseudomonas sphaeroides

MSX对光合细菌GOGAT缺失突变株（Nif~-）固氮酶的诱导

Methods Mice pain threshold value was observed using hot-plate methods , writhing methods and ICV . Result Analgesia effect of Panax Japonicus Extract is strengthened complicated with Ver , Nif and Tet .

方法取昆明种小鼠，采用热板法、扭体法及侧脑室注射法（icv）给药，观察小鼠疼痛阈值改变；结果竹节人参提取物与Ver、Nif、Tet合用后其镇痛作用明显增强。

Methods : To obtain the sequence of NKM , we utilized 8 × glycin for hinge region to connect NIF with KGF by over-lap PCR .

方法：以8个甘氨酸作为铰链区，运用over-LapPCR的方法将NIF与KGF连接，获得双重抗肺纤维化基因嵌合重组体NKM的基因序列。

RESULTS : SRVT , Nif and Ver all had remarkable antihypertensive effect ( P0.01 ), the total response rates were 94 % , 95 % , and 94 % , respectively .

结果：SRVT，Nif及Ver均有非常显著降压效果（P＜0.01），总有效率依次为94%，95%及94%。

CONCLUSION : The antihypertensive effect of SRVT , Nif , and Ver are similar , but Nif shows more adverse reactions than SRVT and Ver .

结论：3组降压疗效相似，但Nif组不良反应大于另2种药物。

On the basis of the transformation of nonintegral folded-chain ( NIF ) crystals into integral folded-chain ( IF ) crystals , the growth processes of double lamellae and single layer lamellae is discussed .

根据非整数次折迭链晶向整数次折迭链晶的转变，讨论了双层片晶和单层片晶的生长过程。

Along with the rapid progresses of high power solid-state laser drivers , several types of multi-beam laser systems , such as National Ignition Facility ( NIF ) have bet-r. developed aiming at achieving super-high powers or super-high energies .

随着高功率固体激光器的迅速发展，为了进一步获取超高功率、超大能量的激光，出现了以NIF为代表的一系列超大型多光束高功率固体激光系统。

Rats were given a single dose of subcutaneous monocrotaline ( MCT , 50 mg / kg ) to induce the model of pulmonary hypertension , then treated with gastric infusion of normal saline or Nif respectively for 21 days .

予MCT（50mg/kg）制做大鼠肺动脉高压模型后，分别给Nif组及模型组大鼠连续灌胃Nif（20mg/kg·d）和等量生理盐水21d。

Results : The cDNA encoding mature protein of NIF was successfully amplified by PCR and cloned into expression vector pET-21a ( + ) between the sites of Nde ⅰ and BamH ⅰ . Using the theory developed by J.

结果：本研究成功利用PCR技术扩增出目的cDNA并克隆于表达质粒pET-21a（+）。