RADIOIMMUNOTOXICOLOGICAL EFFECT OF ENRICHED URANIUM ON CENTRAL AND PERIPHERAL IMMUNE CELLS AND THE PROTECTIVE ACTION OF IL－1 AND IL－2

ＲＡＤＩＯＩＭＭＵＮＯＴＯＸＩＣＯＬＯＧＩＣＡＬＥＦＦＥＣＴＯＦＥＮＲＩＣＨＥＤＵＲＡＮＩＵＭＯＮＣＥＮＴＲＡＬＡＮＤＰＥＲＩＰＨＥＲＡＬＩＭＭＵＮＥＣＥＬＬＳＡＮＤＴＨＥＰＲＯＴＥＣＴＩＶＥＡＣＴＩＯＮＯＦＩＬ－１ＡＮＤＩＬ－２￥ＺｈｕＳｈｏｕｐｅ...     

NASOPHARYNGEAL CARCINOMA RADIOSENSITIVITY PREDICTION BY CYTOKINESIS－BLOCK MICRONUCLEUS ASSAY

ＮＡＳＯＰＨＡＲＹＮＧＥＡＬ　ＣＡＲＣＩＮＯＭＡ　ＲＡＤＩＯＳＥＮＳＩＴＩＶＩＴＹ　ＰＲＥＤＩＣＴＩＯＮ　ＢＹ　ＣＹＴＯＫＩＮＥＳＩＳ－ＢＬＯＣＫ　ＭＩＣＲＯＮＵＣＬＥＵＳ　ＡＳＳＡＹＹａｎｇＸｉｎｇ（杨星）；ＳｈｉＪｉａｎｈｕｉ（史剑慧）ａｎｄＣｈ...     

A PHOTOEMISSIVE MONOENERGETIC ELECTRON SOURCE FOR CALIBRATING THE BETA－MAGNETIC SPECTROMETER

ＡＰＨＯＴＯＥＭＩＳＳＩＶＥＭＯＮＯＥＮＥＲＧＥＴＩＣＥＬＥＣＴＲＯＮＳＯＵＲＣＥＦＯＲＣＡＬＩＢＲＡＴＩＮＧＴＨＥＢＥＴＡ－ＭＡＧＮＥＴＩＣＳＰＥＣＴＲＯＭＥＴＥＲ￥ＣｈｅｎＺｈｉｃａｉ（陈志才）；ＳｕｎＨａｎｃｈｅｎｇ（孙汉城）ａｎｄＭａｏＹａｊ...     

STUDY ON RESIDUES OF ~（14）C－FENITROTHION IN MODEL RICE－FISH ECOSYSTEM AND FIELD RICE－FISH ECOSYSTEM

ＳＴＵＤＹＯＮＲＥＳＩＤＵＥＳＯＦ~（１４）Ｃ－ＦＥＮＩＴＲＯＴＨＩＯＮＩＮＭＯＤＥＬＲＩＣＥ－ＦＩＳＨＥＣＯＳＹＳＴＥＭＡＮＤＦＩＥＬＤＲＩＣＥ－ＦＩＳＨＥＣＯＳＹＳＴＥＭＺｈａｎｇＺｈｏｎｇｌｉａｎｇ（张仲良）；ＷａｎｇＨｕａｘｉｎ（王化新）；Ｇ?..     

STUDY ON OCCURENCE FORM OF PLATINUM IN XINJIE Cu－Pt DEPOSIT BY NAA AND SCANNING PROTON MICROPROBE

ＳＴＵＤＹＯＮＯＣＣＵＲＥＮＣＥＦＯＲＭＯＦＰＬＡＴＩＮＵＭＩＮＸＩＮＪＩＥＣｕ－ＰｔＤＥＰＯＳＩＴＢＹＮＡＡＡＮＤＳＣＡＮＮＩＮＧＰＲＯＴＯＮＭＩＣＲＯＰＲＯＢＥＬｉＸｉａｏｌｉｎ，ＺｈｕＪｉｅｑｉｎｇ，ＧｕＹｉｎｇｍｅｉ，ｗｕＸｉａｎＫａｎｇ（Ｓ...     

LARGE VOLUME IONIZATION CHAMBER USED AS LABORATORY REFERENCE FOR LOW ENERGY X－RAY MEASUREMENT

ＬＡＲＧＥ　ＶＯＬＵＭＥ　ＩＯＮＩＺＡＴＩＯＮ　ＣＨＡＭＢＥＲ　ＵＳＥＤ　ＡＳ　ＬＡＢＯＲＡＴＯＲＹ　ＲＥＦＥＲＥＮＣＥ　ＦＯＲ　ＬＯＷ　ＥＮＥＲＧＹ　Ｘ－ＲＡＹ　ＭＥＡＳＵＲＥＭＥＮＴＹａｎｇＧｕｏｓｈａｎ；ＸｕｅＹｏｎｇｋｕａｎｄＣａｉＦａｎｇｏ...     

MEASUREMENTS OF TOTAL CROSS SECTIONS FOR K－SHELL IONIZATION BY ELECTRON BOMBARDMENT

ＭＥＡＳＵＲＥＭＥＮＴＳＯＦＴＯＴＡＬＣＲＯＳＳＳＥＣＴＩＯＮＳＦＯＲＫ－ＳＨＥＬＬＩＯＮＩＺＡＴＩＯＮＢＹＥＬＥＣＴＲＯＮＢＯＭＢＡＲＤＭＥＮＴＬｉＪｉｎｇｗｅｎ（李景文）；ＤｏｎｇＺｈｉｑｉａｎｇ（董志强）；ＺｅｎｇＸｉａｎｔａｎｇ（曾宪堂），Ｈ...     

RESIDUAL GAS IONIZATION BEAM PROFILE MONITOR ON 40MeV H~－ BEAM TRANSPORT LINE

ＲＥＳＩＤＵＡＬＧＡＳＩＯＮＩＺＡＴＩＯＮＢＥＡＭＰＲＯＦＩＬＥＭＯＮＩＴＯＲＯＮ４０ＭｅＶＨ~－ＢＥＡＭＴＲＡＮＳＰＯＲＴＬＩＮＥＸｕＷｅｉｐｅｎｇ（徐伟鹏）（ＩｎｓｔｉｔｕｔｅｏｆＮｕｃｌｅａｒＲｅｓｅａｒｃｈ，ｔｈｅＣｈｉｎｅｓｅＡｃａｄｅｍｙ...     

PREPARATION OF BONE TUMOR THERAPEUTIC RADIOPHARMACEUTICALS ^153 Sm—EDTMP

ＰＲＥＰＡＲＡＴＩＯＮ　ＯＦ　ＢＯＮＥ　ＴＵＭＯＲ　ＴＨＥＲＡＰＥＵＴＩＣ　ＲＡＤＩＯＰＨＡＲＭＡＣＥＵＴＩＣＡＬＳ　~（１５３）Ｓｍ－ＥＤＴＭＰＬｕｏＳｈｕｎｚｈｏｎｇ（罗顺忠）；ＰｕＭａｎｆｅｉ（蒲满飞）；ＱｉａｏＪｉａｎ（谯健）；ＬｉｕＺｈｏｎ?..     

BODY SURFACE EXPOSURE DISTRIBUTION OF EXAMINEES RECEIVED UPPER G．I．T．X－RAY EXAMINATION

ＢＯＤＹ　ＳＵＲＦＡＣＥ　ＥＸＰＯＳＵＲＥ　ＤＩＳＴＲＩＢＵＴＩＯＮ　ＯＦ　ＥＸＡＭＩＮＥＥＳ　ＲＥＣＥＩＶＥＤ　ＵＰＰＥＲ　Ｇ．Ｉ．Ｔ．Ｘ－ＲＡＹ　ＥＸＡＭＩＮＡＴＩＯＮＦｅｎｇＤｉｎｇｈｕａ（冯定华）ａｎｄＣｈｅｎｇＱｉｊｕｎ（程祺钧）（Ｆａｃｕ...     

HDEHP萃取镓的机理

引言镓与伴生元素铝、铁和铜的分离可用20%TBP-二甲基溶液从盐酸或硫酸溶液中萃取镓来实现,萃取效率可高达99.9%以上,但必须在浓盐酸条件下进行。Morris用中性磷类萃取剂TBP从盐酸溶液中萃取氯化镓时,观察到溶液中酸度为0.2—0.6 mol/l时,镓     

二(2-乙基己基)亚砜萃取铀

亚砜是六十年代发展起来的一类萃取剂,它的萃取性能与中性磷萃取剂TBP相似,烷基亚砜对铀、钍、希土元素的分离效率比TBP高,尤其是它的辐解产物不像TBP那样对裂片元素有很强的亲合力,因此以亚砜代替TBP具有一定的优越性。 亚砜类对铀的萃取研究得较多的是二辛基亚砜(DOSO),但DOSO在脂肪烃类溶剂中溶解度小,这给萃取带来一定的限制,二(2-乙基己基)亚砜(DEHSO)与DOSO的碳原子     

Vaporization and Surface Ionization of LaC2, CeC2, PrC2, NdC2, ThC2 and UC2

The Langmuir vaporization and the surface ionization of LaC₂, CeC₂, PrC₂, NdC₂, ThC₂ and UC₂ from a heated graphite filament have been studied mass spectrometrically. It was found that there were present small amounts of neutral and ionic metal dicarbide molecules in addition to neutral and ionic metal atoms in the LaC₂, CeC₂, PrC₂, ThC₂ and UC₂-C systems with the exception of NdC₂-C, where neither neutral nor ionic metal dicarbide molecules were observed. The reason for this exceptional behavior of the NdC₂-C system is explained by the very small vaporization coefficients, as estimated from the measurements of neutral MC₂/M ratios and ionic MC₂/M ratios.

From the measurements of the heats of vaporization, it was surmised that the ionization potential of Th measured by the surface ionization comparison technique might be too high.     

Vapor Species over Na2O-B2O3-SiO2-Cs2O Glass

Methods for suppression and control of the axisymmetric vertical positional instability are described on the basis of conceptural design studies with the International Tokamak Reactor (INTOR). The shell effect is well known to be useful for suppression of the fast instability. Here shell structures are presented and their usefulness is assessed. Included in the assessments are required modellings of the plasma current for determination of mutual inductances between the plasma and the inductive components around it. Three kinds of models are described and their features are compared to the shell effect. Two kinds of simplified reactor structures are described and studied by comparing them with some control characteristics of the slow instability by a pair of control coils. Their structures are selected so as to result in different shell effects between them, and are consequently found to produce different capacities of power supply, too.     

Ternary Compounds PuNiC2 and PuCoC2

In order to determine a crack propagation rate of less than 10^-8 mm/s in a 24-hour integrated measurement, major parameters of a coupled system of a constant tension specimen and crack depth measurement, based on potential drop method, have been optimized. Influences of sensor geometry, location for detecting potential drop and data processing of the ratio of signal to noise (S/N) were optimized by applying Taguchi's Method. Then a suitable sensor geometry and data processing method were proposed to get a robust measurement system with higher sensitivity and lower susceptibility for geometrical and procedural fluctuations.

By applying the optimal crack propagation rate measurement system, it was confirmed that a crack propagation rate of lxlO^-8 mm/s can be measured under a low concentration condition of hydrogen peroxide with less than a 20% error by a 24-hour integrated measurement.     

纳米SnO2和SnO2／SiO2材料的正电子湮没研究

采用溶胶一凝胶法制备了纯纳米ＳｎＯ２和掺杂ＳｉＯ２的纳米ＳｎＯ２材料，应用Ｘ射线衍射和正电子湮没寿命谱等手段进行了纳米材料的界面结构和纳米晶粒的生长过程，结果表明，所制备的纳米ＳｎＯ２和ＳｎＯ２／ＳｉＯ２材料中只存在两类缺陷，分别对短寿命τ１和中等寿命τ２，材料中两类缺陷的数量比与粒径有关，纳米ＳｎＯ２晶粒生长随热处理温度升高为分两个阶段，低于晶化临界温度时，晶粒生长缓慢，高于此温度时，则生长迅速