发布求助
文献互助 智能选刊 最新文献

The International journal of applied radiation and isotopes最新文献

筛选
英文 中文
Interaction of Polyethylene and Tritium Gas as Monitored by Raman Spectroscopy 聚乙烯与氚气相互作用的拉曼光谱监测
The International journal of applied radiation and isotopes Pub Date : 1985-12-31 DOI: 10.13182/FST85-A24626
J. Gill
{"title":"Interaction of Polyethylene and Tritium Gas as Monitored by Raman Spectroscopy","authors":"J. Gill","doi":"10.13182/FST85-A24626","DOIUrl":"https://doi.org/10.13182/FST85-A24626","url":null,"abstract":"Irradiation of high-density polyethylene by ~1 atm overpressure of T2 gas at 23+- 2 degrees C has been shown to produce severe damage, about 200 MRad dose, within 6 months. Production rate of H2 gas from irradiation due to polymer incorporation of tritium increased quickly within the first 2 months, after which it slowed considerably. It is proposed that outgassing of H2 acted to inhibit diffusion of solubilized HT or T2 into the bulk, thereby limiting increases in polymer T incorporation and thus damage rate. Damage to the HDPE sample was found to be nonuniform. Laser fluorescence from the sample surface irradiated by the supply of T2 gas was ~10{sup}3-fold greater in the energy deposition layer than the fluroescence from bulk polymer after 2 months. This factor was within an order of magnitude of calculated dosages to surface and bulk. Fluorescence from the bulk, apparently caused by unsaturated polyene groups formed during irradiation, grew in time about proportionally to H2 generation and thus dose. An appreciable concentration of radical or ion-radical polyenes at room temperature could be recombined by bleaching for 15 minutes at ~150 degrees C; these species appeared to reform over night at room temperature.","PeriodicalId":22517,"journal":{"name":"The International journal of applied radiation and isotopes","volume":"52 1","pages":"2318-2329"},"PeriodicalIF":0.0,"publicationDate":"1985-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85869487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Effect of the Tc-Nitrido group on the behaviour of 99mTc-radiopharmaceuticals Tc-Nitrido基团对99mc -放射性药物行为的影响
The International journal of applied radiation and isotopes Pub Date : 1985-12-01 DOI: 10.1016/0020-708X(85)90247-9
John Baldas, John Bonnyman
{"title":"Effect of the Tc-Nitrido group on the behaviour of 99mTc-radiopharmaceuticals","authors":"John Baldas,&nbsp;John Bonnyman","doi":"10.1016/0020-708X(85)90247-9","DOIUrl":"10.1016/0020-708X(85)90247-9","url":null,"abstract":"<div><p>The preparation of the <sup>99<em>m</em></sup>TcN-complexes of gluconate, EHDP, HIDA and PIPIDA by substitution reactions of <sup>99<em>m</em></sup>TcNCl<sub>4</sub><sup>−</sup> is described. Studies of the distribution of these complexes in mice indicate that the presence of the Tc-nitrido group significantly alters the biological properties of the <sup>99<em>m</em></sup>Tc-complexes formed using these ligands. Results suggest that the <sup>99<em>m</em></sup>TcN-complexes of these ligands are labile and undergo some ligand exchange <em>in vivo</em>.</p></div>","PeriodicalId":22517,"journal":{"name":"The International journal of applied radiation and isotopes","volume":"36 12","pages":"Pages 919-923"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-708X(85)90247-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"15052094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 35
List of contents and author index volume 36, 1985 目录和作者索引第36卷，1985年
The International journal of applied radiation and isotopes Pub Date : 1985-12-01 DOI: 10.1016/0020-708X(85)90270-4
{"title":"List of contents and author index volume 36, 1985","authors":"","doi":"10.1016/0020-708X(85)90270-4","DOIUrl":"https://doi.org/10.1016/0020-708X(85)90270-4","url":null,"abstract":"","PeriodicalId":22517,"journal":{"name":"The International journal of applied radiation and isotopes","volume":"36 12","pages":"Pages i-xvii"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-708X(85)90270-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136703914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Radioiodination and preliminary in vivo investigation of the alkaloid cryptolepine 隐平生物碱的放射碘化及体内初步研究
The International journal of applied radiation and isotopes Pub Date : 1985-12-01 DOI: 10.1016/0020-708X(85)90268-6
Q. Salako , S.Y.S. Ablordeppey , D. Dwuma-Badu , J.R. Thornback
{"title":"Radioiodination and preliminary in vivo investigation of the alkaloid cryptolepine","authors":"Q. Salako ,&nbsp;S.Y.S. Ablordeppey ,&nbsp;D. Dwuma-Badu ,&nbsp;J.R. Thornback","doi":"10.1016/0020-708X(85)90268-6","DOIUrl":"10.1016/0020-708X(85)90268-6","url":null,"abstract":"<div><p>In this paper we report the successful labelling of cryptolepine with <sup>131</sup>I using the chloramine T method. Quality control by ITLC of the labelled product showed 80% labelling but when the mixture was equilibrated with some amberlite (Cl<sup>−</sup>) anion resin to exchange the excess free iodide, the radiochemical purity was raised to &gt;90%. Preliminary biodistribution in a rat did not show specific localisation of the tracer; rather, rapid clearance from the blood was indicated. It appears that its main excretory pathway is the hepatobiliary tract despite its relatively small molecular weight of 365. Also, despite i.v. administration, an appreciable 8% uptake was found in the stomach at 1 h post injection, indicating the process of enterohepatic reflux. These findings may have some bearings on the antimicrobial property of the plant.</p></div>","PeriodicalId":22517,"journal":{"name":"The International journal of applied radiation and isotopes","volume":"36 12","pages":"Pages 1003-1004"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-708X(85)90268-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14004667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Dosimetry of gamma rays from nitrogen-16 decay 氮-16衰变产生的伽马射线的剂量学
The International journal of applied radiation and isotopes Pub Date : 1985-12-01 DOI: 10.1016/0020-708X(85)90260-1
F.N. Carneiro De Sousa, G.G. Eichholz
{"title":"Dosimetry of gamma rays from nitrogen-16 decay","authors":"F.N. Carneiro De Sousa,&nbsp;G.G. Eichholz","doi":"10.1016/0020-708X(85)90260-1","DOIUrl":"10.1016/0020-708X(85)90260-1","url":null,"abstract":"<div><p>CaF<sub>2</sub> thermoluminescence dosimeters (TDL) were used to measure the apparent absorbed dose due to <sup>16</sup>N-decay radiation, such as is found in nuclear reactor coolant or in air due to the <sup>16</sup>O(n,p)<sup>16</sup>N activation by fast neurons. By comparison with an ionization chamber calibrated with a <sup>60</sup>Co source, it was found that the TLD underestimated the dose for about 7-MeV γ-rays by a factor 1.8, while the ionization chamber reading was low by a factor 2.6 when compared with the calculated dose.</p></div>","PeriodicalId":22517,"journal":{"name":"The International journal of applied radiation and isotopes","volume":"36 12","pages":"Pages 981-984"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-708X(85)90260-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"15197109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Standard sources for the efficiency calibration of photon detectors in the energy range from 5 to 40 keV 能量范围为5至40 keV的光子探测器效率校准的标准光源
The International journal of applied radiation and isotopes Pub Date : 1985-12-01 DOI: 10.1016/0020-708X(85)90259-5
K. Debertin, J.C. Furnari , K.F. Walz
{"title":"Standard sources for the efficiency calibration of photon detectors in the energy range from 5 to 40 keV","authors":"K. Debertin,&nbsp;J.C. Furnari ,&nbsp;K.F. Walz","doi":"10.1016/0020-708X(85)90259-5","DOIUrl":"10.1016/0020-708X(85)90259-5","url":null,"abstract":"<div><p>The production and use of radioactive standard sources suitable for the efficiency calibration of Si(Li) and germanium detectors in the energy range from 5 to 40 keV is described. Special attention was given to self absorption which could be reduced to about 1% or less by applying appropriate source preparation procedures.</p></div>","PeriodicalId":22517,"journal":{"name":"The International journal of applied radiation and isotopes","volume":"36 12","pages":"Pages 977-980"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-708X(85)90259-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81502855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Fast recovery by dry distillation of 75Br induced in reusable metal selenide targets via the 76Se(p,2n)75Br reaction 用76Se(p,2n)75Br反应快速回收可重复使用金属硒化靶中的75Br
The International journal of applied radiation and isotopes Pub Date : 1985-12-01 DOI: 10.1016/0020-708X(85)90256-X
W. Vaalburg, A.M.J. Paans, J.W. Terpstra, T. Wiegman, K. Dekens, A. Rijskamp, M.G. Woldring
{"title":"Fast recovery by dry distillation of 75Br induced in reusable metal selenide targets via the 76Se(p,2n)75Br reaction","authors":"W. Vaalburg,&nbsp;A.M.J. Paans,&nbsp;J.W. Terpstra,&nbsp;T. Wiegman,&nbsp;K. Dekens,&nbsp;A. Rijskamp,&nbsp;M.G. Woldring","doi":"10.1016/0020-708X(85)90256-X","DOIUrl":"10.1016/0020-708X(85)90256-X","url":null,"abstract":"<div><p>A number of metal selenides were investigated as target material for the production of <sup>75</sup>Br by the <sup>76</sup>Se(p,2n)<sup>75</sup>Br reaction. Ag<sub>2</sub>Se, CuAgSe, and Cu<sub>2</sub>Se met the rqquirements for an economical and fast production procedure. These selenides were found to be stable during bombardment with 1–4 μA 28 MeV protons (beam dimension 0.4 cm<sup>2</sup>) and at the dry distillation temperature of 1473 K. A target system was developed for radiobromine production with a 7 μA 28−22 MeV proton beam on Cu<sub>2</sub>Se. At EOB the calculated thick target yield is 1.59 GBq/μAh (43 mCi/μAh) and the radionuclidic purity is 98.6%. The radiobromine was separated from Cu<sub>2</sub>Se by dry distillation at 1473 K and collected for 80–95% on platinum wool pretreated with CaCl<sub>2</sub>. Radiochemical analysis showed the radiobromine to be Br<sup>−</sup> for 95% and BrO<sub>3</sub><sup>−</sup> for 5%. The total loss of selenide after irradiation and distillation was found to be less than 0.1%.</p></div>","PeriodicalId":22517,"journal":{"name":"The International journal of applied radiation and isotopes","volume":"36 12","pages":"Pages 961-964"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-708X(85)90256-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81075960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 24
Graphical representation of K-shell and total internal conversion coefficients; from P30−104 k壳和总内转换系数图解从e−104
The International journal of applied radiation and isotopes Pub Date : 1985-12-01 DOI: 10.1016/0020-708X(85)90269-8
Herbert H. Hansen
{"title":"Graphical representation of K-shell and total internal conversion coefficients; from P30−104","authors":"Herbert H. Hansen","doi":"10.1016/0020-708X(85)90269-8","DOIUrl":"10.1016/0020-708X(85)90269-8","url":null,"abstract":"","PeriodicalId":22517,"journal":{"name":"The International journal of applied radiation and isotopes","volume":"36 12","pages":"Page 1005"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-708X(85)90269-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"96311534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Field equipment for determination of radioactivity in plant-root studies 植物根研究中放射性测定的现场设备
The International journal of applied radiation and isotopes Pub Date : 1985-12-01 DOI: 10.1016/0020-708X(85)90248-0
Daniel Mascanzoni
{"title":"Field equipment for determination of radioactivity in plant-root studies","authors":"Daniel Mascanzoni","doi":"10.1016/0020-708X(85)90248-0","DOIUrl":"10.1016/0020-708X(85)90248-0","url":null,"abstract":"<div><p>An instrument and a method for investigation of root bioactivity in plants injected with <sup>75</sup>Se are presented. The design of the detection probe is described and its response in soil is surveyed. The scanning of radioactivity in the root system is performed automatically by means of a digital depth control, the function of which is also described. The method has been used for several years at this department and the results of a laboratory test are presented.</p></div>","PeriodicalId":22517,"journal":{"name":"The International journal of applied radiation and isotopes","volume":"36 12","pages":"Pages 925-929"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-708X(85)90248-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80420725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Comparison of infrared and mass-spectrometric measurements of carbon-13/carbon-12 ratios 碳-13/碳-12比值的红外和质谱测量比较
The International journal of applied radiation and isotopes Pub Date : 1985-12-01 DOI: 10.1016/0020-708X(85)90266-2
William W. Wong
{"title":"Comparison of infrared and mass-spectrometric measurements of carbon-13/carbon-12 ratios","authors":"William W. Wong","doi":"10.1016/0020-708X(85)90266-2","DOIUrl":"10.1016/0020-708X(85)90266-2","url":null,"abstract":"<div><p>The δ<sup>13</sup>C values of 20 breath samples and 10 tank-CO<sub>2</sub> samples (δ<sup>13</sup>C values ranged from −31.3 to +148.9% vs PDB) and the CO<sub>2</sub> concentrations of three breath samples and 10 tank-CO<sub>2</sub> samples were measured with a commercial prototype of a diode-laser i.r. spectrophotometer, MAT I. The results were compared with those obtained by gas-isotope-ratio mass spectrometry and by gas chromatography. Precisions (<em>s</em><sub>x</sub>, <em>n</em> = 10) of 0.2% and 0.6% were calculated for <sup>13</sup>C/<sup>12</sup>C ratios and CO<sub>2</sub> concentrations, respectively, using the MAT I system.</p></div>","PeriodicalId":22517,"journal":{"name":"The International journal of applied radiation and isotopes","volume":"36 12","pages":"Pages 997-999"},"PeriodicalIF":0.0,"publicationDate":"1985-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0020-708X(85)90266-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"15197111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信