International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes最新文献_第9页

Remediation of groundwater polluted with chlorinated ethylenes by ozone-electron beam irradiation treatment 臭氧-电子束辐照修复地下水中氯代乙烯污染的研究

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90052-G

Peter Gehringer, Emil Proksch, Helmut Eschweiler, Walter Szinovatz

引用次数: 29

Improved specific activity of reactor produced 117mSn with the Szilard-Chalmers process 提高了Szilard-Chalmers法制备117mSn反应器的比活性

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90053-H

L.F. Mausner, S. Mirzadeh , S.C. Srivastava

{"title":"Improved specific activity of reactor produced 117mSn with the Szilard-Chalmers process","authors":"L.F. Mausner, S. Mirzadeh , S.C. Srivastava","doi":"10.1016/0883-2889(92)90053-H","DOIUrl":"10.1016/0883-2889(92)90053-H","url":null,"abstract":"<div>We report an investigation of the application of the Szilard-Chalmers process to improve the specific activity of reactor produced 117mSn. The radiopharmaceutical 117mSn4+DTPA is a promising agent for relieving bone pain in breast and prostate cancer patients. Preliminary studies in these patients have given very encouraging results. For this application high specific activity 117mSn is required to minimize the quantity of administered DTPA. Using a tetraphenyltin target we have investigated solvent extraction and ion exchange techniques to enrich the radioactive atom concentration. Other variables studied include the effect of neutron flux, total neutron fluence and sample mass. The enrichment factor was comparable for both solvent extraction and ion exchange techniques, but solvent extraction was more convenient. For 1 h irradiations the enrichment factor averaged ∼ 70 but declined to ∼ 2 after 24 h irradiation due to accumulated radiation damage. The enrichment factor also declined with increasing neutron energy. An isotope effect on the Szilard-Chalmers process was observed as the enrichment factor for 113Sn was consistently higher than for 117mSn.</div>","PeriodicalId":14288,"journal":{"name":"International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes","volume":"43 9","pages":"Pages 1117-1122"},"PeriodicalIF":0.0,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0883-2889(92)90053-H","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77834016","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

Decay data of 141Ce 141Ce的衰变数据

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90046-H

E. Schönfeld, H. Janßen, U. Schötzig

{"title":"Decay data of 141Ce","authors":"E. Schönfeld, H. Janßen, U. Schötzig","doi":"10.1016/0883-2889(92)90046-H","DOIUrl":"10.1016/0883-2889(92)90046-H","url":null,"abstract":"<div>A 4πβ-gamma coincidence system and several efficiency calibrated semiconductor spectrometers were used to determine the following 141Ce/141Pr decay data: 1. The β-transition probability to the 145 keV level of 141Pr, b1. 2. The total conversion coefficient of the 145 keV transition to the ground state of 141Pr, αT. 3. The gamma-ray emission probability of the 145 keV photons, Pγ. The results are b1 = 0.697(6), αT = 0.452(8), Pγ = 0.480(5). The value of b1 is in agreement with most of the values reported in the literature for this quantity. The value found for αT is higher than all experimental values determined previously but agrees well with the theoretically calculated value for an M1 transition with 0.48% E2 admixture (αT = 0.4565). The value for Pγ agrees with the value determined by Hansen et al. (1979), Pγ = 0.482(3). In addition, emission probabilities of K and L x-rays following the decay of 141Ce are determined experimentally.</div>","PeriodicalId":14288,"journal":{"name":"International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes","volume":"43 9","pages":"Pages 1071-1077"},"PeriodicalIF":0.0,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0883-2889(92)90046-H","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91538981","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

Studies to label alfentanil with carbon-11 用碳11标记阿芬太尼的研究

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90061-I

Anthony L. Feliu

引用次数: 3

Events 事件

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90067-O

引用次数: 0

Importance of precise determination of technetium-labeled DISIDA concentrations for in vitro hepatocellular transport studies 精确测定技术标记的DISIDA浓度对体外肝细胞转运研究的重要性

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90044-F

Anna W. Sasaki , Alice Weaver , Fred Turner , Gerbail T. Krishnamurthy

{"title":"Importance of precise determination of technetium-labeled DISIDA concentrations for in vitro hepatocellular transport studies","authors":"Anna W. Sasaki , Alice Weaver , Fred Turner , Gerbail T. Krishnamurthy","doi":"10.1016/0883-2889(92)90044-F","DOIUrl":"10.1016/0883-2889(92)90044-F","url":null,"abstract":"<div>Technetium 99m-labeled diisopropyliminodiacetic (acid [99mTc]DISIDA) has been used extensively in the evaluation of hepatobiliary diseases. As a result of investigation into transport mechanisms of [99mTc]DISIDA, we undertook to determine precise concentrations of this compound in the standard clinical formulation. Calculations based on published formulas were used. These take into account column efficiency, the time since the previous elution of 99mTc from the 99Mo column, and the total quantity of 99mTc eluted. Primary cultures of rat hepatocytes were used to evaluate the transport of Na99mTcO4 and the 99mTc-labeled DISIDA monomer. Pertechnetate was not taken up by the hepatocytes, the amount of [99mTc]DISIDa taken up was not dependent on the concentration of DISIDA but rather on the concentration of technetium, when the DISIDA/99mTc ratio was varied in the culture medium. We conclude that calculation of the total technetium concentration is necessary to determine the amount of compound taken up by the liver, and to interpret kinetic studies of hepatocellular transport mechanisms.</div>","PeriodicalId":14288,"journal":{"name":"International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes","volume":"43 9","pages":"Pages 1061-1064"},"PeriodicalIF":0.0,"publicationDate":"1992-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0883-2889(92)90044-F","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12503770","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

Cross sections of natSb(p,x) reactions for 30–46 MeV protons 30-46 MeV质子作用下的natSb(p,x)反应截面

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90051-F

Jong Hwa Yi, David A. Miller

引用次数: 9

A new neutral-lipophilic 99mTc complex with a bis-hydrazide-phosphine (BHP) ligand 一种新的含双肼膦(BHP)配体的中性亲脂性99mTc配合物

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90059-N

K.V. Katti , P.R. Singh , W.A. Volkert , A.R. Ketring , K.K. Katti

引用次数: 8

Rapid determination of hydrolyzed-reduced technetium-99m in particulate radiopharmaceuticals 颗粒放射性药物中水解还原锝-99m的快速测定

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90065-M

Meral T. Ercan

引用次数: 17

Multielemental neutron activation analysis of water samples from Nagpur City and environmental standards 那格浦尔市水样的多元素中子活化分析及环境标准

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90064-L

M.N. Ambulkar, M.B. Pawar, N.L. Chutke, R.G. Weginwar, A.N. Garg

引用次数: 7