The photosynthetic characteristic and its effects on growth of winter wheat in winter were studied by using 14 C tracer.

1、

Major results are reported as follows: ( 1) Decomposition and residual characteristics of 14C-MSM in 3 different soils were systematically studied under controlled conditions.

主要研究结果如下：（1）运用14C同位素示踪技术，系统研究了控制条件下14C-甲磺隆在Pb污染的3种不同性质土壤中的降解和残留特性。

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2、

Preparation of ￣( 113m) In Radiotracer Using for Radioisotope Tracing Flowmeter

同位素示踪流量计用~（113m）In放射源载体的研制

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The behavior of the rare-earth dissolved in steel, of the iron-cerium intermetallic compounds and of the rare-earth inclusions in electrolytic separation process was studied by means of radiolabelling method, electron probe and X-ray analysis.

用放射性同位素示踪法、电子探针和X射线分析研究了溶解在钢中的稀土、铈-铁金属间化合物和稀土夹杂物在电解分离过程中的行为。

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Isotope tracing study was also adopted for observing the effects of 1,25 ( OH) 2D 3 on calcium uptake into extracellular matrix.

同位素示踪方法观察1,25（OH）2D3对胞外基质45Ca2+的影响。

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The study of lens biochemistry isotopic tracing investigation of cataract induced in rats by na_2~ ( 75) seo_3 administration

晶状体生化的研究&Na2~（75）SeO2诱发大鼠白内障的同位素示踪研究

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The effects of nematodes on~ ( 15) N absorption by wheat and~ ( 15) N loss from soil& plant system were also studied using~ ( 15) N isotope tracer technique.

利用盆栽试验，研究杀灭线虫对土壤N、P转化和小麦生长的影响，以及运用~（15）N同位素示踪技术研究了线虫对~（15）N吸收和损失的影响。

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Review on Application of Isotope Tracing Technique in the Investigation of Synthetic Mechanism and Biodegradation of HMX

同位素示踪法在HMX合成机理及降解产物鉴定中应用的进展

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Direct synthesis of dimethyl carbonate ( DMC) by CO insertion into methanol promoted by K_2CO_3/ CH_3I was studied by the isotopic tracer technique.

采用同位素示踪技术，系统地研究了K2CO3/CH3I促进的CO2插入甲醇直接合成碳酸二甲酯（DMC）的反应机理。

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Re-Os isotope tracer and dating methods in Ore Deposits Research

金属矿床Re-Os同位素示踪与定年研究

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Re-Os isotope tracing and dating of black shales and oceanic anoxic events

黑色页岩与大洋缺氧事件的Re-Os同位素示踪与定年研究

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Application of Double Focusing Magnetic Sector High Resolution ICP-MS to the Study of Iron Stable Isotope Trace

双聚焦扇型磁式高分辨ICP-MS在人体铁稳定同位素示踪研究中的应用

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Isotopic Tracer Study on Mechanism of Direct Synthesis of Dimethyl Carbonate Promoted by K_2CO_3/ CH_3I

同位素示踪研究K2CO3/CH3I促进的碳酸二甲酯直接合成反应

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WTHZ Methods: WTBZ The effect of HCG on PHA-induced human T-lymphocytes transformation was studied by means of radioisotope technique.

方法：应用同位素示踪法体外观察HCG对人外周T淋巴细胞转化增殖反应的影响。

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Study on Roles of NAA in the Rooting Process of Populus tomentosa Cuttings by means of Radioactive Tracing

用同位素示踪技术研究NAA在毛白杨插穗生根过程中的作用

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15、

This paper reviews the recent application and development of environmental isotope tracing technology to geothermal geochemistry in the following aspects: gas isotopes ( He, C) tracing of warm springs;

介绍了环境同位素示踪技术在地热地球化学研究中的最新应用和进展。包括温泉气体的同位素（He、C）示踪；

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~ ( 14) C tracer analysis and gas chromatography were used to study the residual and degradation characteristic of triadimefon in wheat and soil.

用~（14）C同位素示踪法和气相色谱法研究了粉锈宁农药施用后在小麦和土壤中的残留降解规律。

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Temporal and Spatial Variations of the Nitrate-nitrogen Sources in an Underground River Using~ ( 15) N Isotope Technique

基于~（15）N同位素示踪技术的地下河硝态氮来源时空变化特征分析

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Study of s~ q curve by isotope tracing test from single borehole

单孔同位素示踪测试S～Q曲线研究

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Study on the Bonds between Lignin and Cellulose by()~ ( 13) Carbon Isotope Tracer Method

~（13）C同位素示踪法研究木素与纤维素连接键的形成

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H, O isotope tracing on the origin and cause of geothermal water;

H、O同位素示踪地下热水的来源及成因；

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