International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes最新文献_第7页

A new high flow 81Rb/81mKr generator 新型高流量81Rb/81mKr发电机

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-10-01 DOI: 10.1016/0883-2889(92)90195-K

J.D.M. Herscheid , L.F. Van Rooij , P.J. Van Leuffen , J.A.J. Camps

引用次数: 2

Gamma-ray energies from the decay of 152Eu 152Eu衰变的伽马射线能量

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-10-01 DOI: 10.1016/0883-2889(92)90202-P

Youngseok Lee, Naohide Hashimoto, Hikaru Inoue, Yasukazu Yoshizawa

引用次数: 6

A simple calibration of a whole-body counter for the measurement of total body potassium in humans 测量人体总钾的一个简单校正全身计数器

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-10-01 DOI: 10.1016/0883-2889(92)90208-V

M.S. Abdel-Wahab , S.K. Youssef , A.M. Aly , S.A. El-Fiki , N. El-Enany , Magda T. Abbas

引用次数: 14

Routine production and quality control of 123I-labelled mIBG at NAC 123i标记mIBG的常规生产及质量控制

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-10-01 DOI: 10.1016/0883-2889(92)90211-V

D. Du T. Rossouw

引用次数: 8

Alpha-particle emission probabilities for 239Pu and 240Pu 239Pu和240Pu的α粒子发射概率

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-10-01 DOI: 10.1016/0883-2889(92)90201-O

C.John Bland , Jean Truffy

{"title":"Alpha-particle emission probabilities for 239Pu and 240Pu","authors":"C.John Bland , Jean Truffy","doi":"10.1016/0883-2889(92)90201-O","DOIUrl":"10.1016/0883-2889(92)90201-O","url":null,"abstract":"<div>Tabulated emission probabilities [e.g. IAEA (1986)] for the α-particle decay of the nuclide 239Pu appear to require revision in the light of measurements reported here. Although the sum of the probabilities of the two most intense lines, α0 and α13, has been listed as ca 88% since the work of Baranov et al. (1963). However, the individual probabilities measured for these lines were 70.73 and 17.56%, and these values differ significantly from those appearing in reference tables [e.g. IAEA (1986)]. In earlier measurements, the incomplete resolution of two peaks only ∼13 keV apart, or the effects of conversion electrons in producting energy-summing effects may have given rise to systematic errors depending on the type of apparatus used.Measurements have been carried out under low geometry with a very thin source of purified 239Pu and, for comparison, another of 240Pu. Emission probabilities were obtained from the energy spectra using a computer programme to find a best-fit to the peaks with analytical expressions. The programme is based on an iterative Simplex procedure to find a minimum of Chi-squared. A careful evaluation of the variances provides estimates of the relative uncertainty (at the 2σ level) of each emission probability which are, in all cases, <2% of the measured values.</div>","PeriodicalId":14288,"journal":{"name":"International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes","volume":"43 10","pages":"Pages 1241-1245"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0883-2889(92)90201-O","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72728162","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

High-energy neutron spectrometry with CR-39 SSNTDs CR-39 ssntd高能中子光谱法

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-10-01 DOI: 10.1016/0883-2889(92)90209-W

A. Abdel-Naby , F.A. El-Akkad , A.M. Abdel-Moneim

引用次数: 4

11C-labelling of the analgesic tramadol and its major metabolites by selective O- and N-methylation 通过选择性O-甲基化和n -甲基化对镇痛药曲马多及其主要代谢产物进行11c标记

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90055-J

Rene Gail, Heinz H. Coenen, Kurt Hamacher, Gerhard Stöcklin

{"title":"11C-labelling of the analgesic tramadol and its major metabolites by selective O- and N-methylation","authors":"Rene Gail, Heinz H. Coenen, Kurt Hamacher, Gerhard Stöcklin","doi":"10.1016/0883-2889(92)90055-J","DOIUrl":"10.1016/0883-2889(92)90055-J","url":null,"abstract":"<div>For in vivo pharmacokinetic studies with PET, the analgesic Tramadol(1-(3-methoxyphenyl)-2-dimethylaminomethyl-cyclohexan-1-ol) and its major O- and N-desmethylated metabolites M1 and M2 were labelled with carbon-11. Starting with the corresponding desmethyl precursors, (1R, 2R)-(+), (1S, 2S)-(−)-[O-methyl-11C]Tramadol and racemic-[N-methyl-11C]Tramadol were prepared by methylation with n.c.a. [11C]methyl iodide in DMSO with radiochemical yields of 85 and 90%, respectively. Specific n.c.a. N-methylation of bis-desmethyl-Tramadol (M5) was achieved without base obtaining 11C-labelled (1R, 2R)-(+)- and (1S, 2S)-(−)-M1 with 90% radiochemical yield. However, a selective O-methylation of (+)- and (−)-M5 was not possible even with an excess of NaOH, and only 70% of (1R, 2R)-(+)- and (1S, 2S)-(−)-[O-methyl-11C]M2 was obtained. Quaternization of Tramadol or M1 was > 15 times slower than O-methylation, and was only observed in the presence of added CH3I carrier.</div>","PeriodicalId":14288,"journal":{"name":"International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes","volume":"43 9","pages":"Pages 1129-1137"},"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)90055-J","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12504761","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

Improved chemistry for the production of yttrium-90 for medical applications 改进了生产医用钇-90的化学方法

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90050-O

Mark L. Dietz, E.Philip Horwitz

引用次数: 54

Gamma ray slush hydrogen monitor 伽马射线泥浆氢监测器

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90057-L

Jag J. Singh , Chih-Ping Shen , Danny R. Sprinkle

引用次数: 0

Cross sections of 151Eu(n,2n)150mEu and 159Tb(n,2n)158Tb reactions near their thresholds 151Eu(n,2n)150mEu和159Tb(n,2n)158Tb反应阈值附近的截面

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes Pub Date : 1992-09-01 DOI: 10.1016/0883-2889(92)90045-G

S.M. Qaim , F. Cserpák , J. Csikai

{"title":"Cross sections of 151Eu(n,2n)150mEu and 159Tb(n,2n)158Tb reactions near their thresholds","authors":"S.M. Qaim , F. Cserpák , J. Csikai","doi":"10.1016/0883-2889(92)90045-G","DOIUrl":"10.1016/0883-2889(92)90045-G","url":null,"abstract":"<div>Cross sections were measured for the first time for the formation of long-lived products <math><msup><mi></mi><mn><mtext>150</mtext><mtext>m</mtext></mn></msup><mtext>Eu</mtext><mtext>(T</mtext><msub><mi></mi><mn><mtext>1</mtext><mtext>2</mtext></mn></msub><mtext> = 35.8 </mtext><mtext>y</mtext><mtext>) </mtext><mtext>and</mtext><mtext> </mtext><msup><mi></mi><mn>158</mn></msup><mtext>Tb</mtext><mtext>(T</mtext><msub><mi></mi><mn><mtext>1</mtext><mtext>2</mtext></mn></msub><mtext> = 180 </mtext><mtext>y</mtext><mtext>)</mtext></math> in (n,2n) reactions on 151Eu and 159Tb, respectively, over the neutron energy range of 8.7–10.7 MeV. The quasi-monoenergetic neutrons were produced via the 2H(d,n)3He reaction using a deuterium gas target at a variable energy compact cyclotron. Use was made of the activation technique in combination with high resolution γ-ray spectroscopy. The transition from the present low energy data to the available cross section values around 14 MeV appears to be smooth.</div>","PeriodicalId":14288,"journal":{"name":"International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes","volume":"43 9","pages":"Pages 1065-1069"},"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)90045-G","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78537835","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: 7