14c

This paper presents an optimum processing method for the measuring data of 14C age .

文中提出了要使~14C年龄测量误差为极小的数据处理方法。

Analysis on the results of 1225 14C - urea breath tests

1225例次~（14）碳-尿素呼气试验结果分析

A metallic vacuum system for preparing the benzene sample of 14C

制备~（14）C苯样品的金属真空系统

The method is convenient , quick and accurate for monitoring of 14C in environmental samples .

方法简便、快速、准确，适用于监测环境样品中~（14）C。

Hp eradication was determined using 14C urea breath test .

Hp是否根除用~（14）C尿素呼气试验。

There is an apparent positive linear correlation between 14C ages and depths .

土壤有机质的~（14）C年龄与剖面深度呈现良好线性关系。

First Comparison of 3H , 14C Actvity Measurement With Liquid Scintillation Counting in China

液体闪烁计数器测量~3H，~（14）C活度第一次全国比对

Translocation and distribution of 14c - Photosynthate in young poplar

用~（14）C研究杨树苗期光合产物的运输和分配

Distribution of 〔 14C 〕 bimolane in mice was studied by means of whole body autoradiography .

用宏观放射自显影术研究[~（14）C]乙双吗啉在小鼠体内的分布。

The accumulation and distribution dynamic of airborne 14C in different parts of quail was studied by using isotope-tracer technology .

研究了气载14C进入鹌鹑体内并在其各部位的累积、分布动态。

H.pylori was determined with the rapid urease test , Warthin-Starry method or 14C urease breath test ;

采用Warthin-Starry染色、快速尿素酶试验或C14尿素呼气试验检测HP的感染情况；

Experimental data of complex cluster radioactivity ( 14C ? ? 4Si ) are systematically analyzed and investigated with different models .

对重核的结团放射性（14C&34Si）的实验数据进行了系统的分析和研究。

Studies on the effect of rice nodal roots over the ground on late growth of rice by ~ ( 32 ) p and 14C

水稻地上节位根对生育后期的影响

I think if you go to 14c , seat right over there , you 'll wind up with what you 're looking for .

如果你去到那边的14C座位你会找到你想要的。

Effects of some scintillating solutes and solvents on counting efficiency for 3H and 14C were presented .

本文研究了几种闪烁溶质和溶剂对~3H和~（14）C测量效率的影响。

The radioactive distribution of the 14C labelled compounds on the paper chromatogram and photograph of the special ring model imaging are given .

最后给出了~（14）C-标记化合物在层析纸分布测量及特别圆圈模型成像实验图像。

This paper describes the apparatus , the results of measurements and the comparison of 3H , 14C activity with liquid scintillation counting method .

本文介绍液体闪烁计数法绝对测量~3H、~（14）C活度的装置，测量结果和比对情况。

Studies on the mechanism of ammoxidation of propylene on Sb-Fe oxide catalyst by ~ 14c tracer

利用~（14）C标记物研究锑铁催化剂上丙烯氨氧化的反应机理

Primary Productivities in Luoyuan Bay were determined by 14C tracer method , compared with the estimation of POC .

用~（14）C示踪法测定了罗源湾初级生产力，并与POC的估算结果比较。

The carbon assimilatory rate of macrophytes measured by 14C method is 19.0 % - 40.2 % of that measured by O2 method .

~（14）C法测出的底栖植物的碳同化速率为O2法测定值的19.0%&40.2%。

It can be used to analyse 3H , 14C labelled compounds on paper ; silicon gel-thin layer and gel electrophoresis layer .

可以快速分析纸条、硅胶板及凝胶板上~3H、~（14）C等放射性标记化合物。

Compared with the well-known Beckman LS 9800 Type Liquid Scintillation System , the system has a high performance at a lower price for measuring 14C geological samples .

与著名的BeckmanLS9800液闪相比较，证明了本系统是测量~（14）C地质样品的一种高性能且价格便宜的仪器。

The 14C dating data reveals that the fourth phase is much later than 1600 BC , which is believed the beginning of the Shang .

碳十四测年数据表明二里头文化四期上限不超过公元前1600。

The related mechanisms of root exudates of maize in improvement iron nutrition of peanut intercropped with maize was investigated by 14C tracer technique .

通过14C示踪技术研究间作条件下玉米根系分泌物改善花生铁营养的作用。

The North China Plain is an area where much research in Quaternary geology has been done and a large number of 14C dating data is available from published materials .

华北平原是我国研究程度较高的地区，历年来积累了大量的14C测年资料。

TRANSLOCATION AND DISTRIBUTION OF ￣ 14C - PHOTOSYNTHATE IN ASPARAGUS BEAN Effects on Production and Distribution of Photosynthate of External Gene to Cottons

长豇豆叶片~（14）C光合产物运转与分配的研究外源基因对棉花光合生产和分配的影响

Return visit once every 3 months , fill in the " simple SF-36 health survey questionnaire ( Chinese version )", and check 14C & UBT again .

之后每隔3个月回访一次，填写《简明SF-36健康状况调查问卷（中文版）》，并复查14C呼气试验。

The FWHM for 13C from 15C and 14C are consistent with Goldhaber model 's prediction .

从15C和14C产生13C的FWHM与Gold-haber模型的预言基本一致。

According to the data of 14C dating of terrace sediment in the first class river , it estimates that the ascendant rate is about 3 mm per year .

根据一级河流阶地沉积物的~（14）C测年资料估算，平均年上升速率约为3毫米。

Histamine-stimulated [ 14C ] - aminopyrine accumulation was used to determine the changes of gastric acid secretion in the two strains of mice in vitro .

同时应用[14C]-氨基比林蓄积试验观察2种小鼠离体胃对组胺刺激的效应。