Februar 1984Pub Date : 1984-12-31DOI: 10.1515/9783112524305-008
V. Karpov, A. N. Dedenkov
{"title":"Production of the Biomass from Chlorella, enriched with 14C-Starch (in Russian)","authors":"V. Karpov, A. N. Dedenkov","doi":"10.1515/9783112524305-008","DOIUrl":"https://doi.org/10.1515/9783112524305-008","url":null,"abstract":"","PeriodicalId":402004,"journal":{"name":"Februar 1984","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1984-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134053964","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}
Februar 1984Pub Date : 1984-12-31DOI: 10.1515/9783112524305-007
Lj. M. Jacimowic, S. Milenkovic, J. Vučina
{"title":"The Study of Adsorption for 99mTc Generator","authors":"Lj. M. Jacimowic, S. Milenkovic, J. Vučina","doi":"10.1515/9783112524305-007","DOIUrl":"https://doi.org/10.1515/9783112524305-007","url":null,"abstract":"","PeriodicalId":402004,"journal":{"name":"Februar 1984","volume":"267 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1984-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131636135","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}
Februar 1984Pub Date : 1984-12-31DOI: 10.1515/9783112524305-002
A. Merz
{"title":"Axial Dispersion and Hoinogenization in Chemical Engineering Systems","authors":"A. Merz","doi":"10.1515/9783112524305-002","DOIUrl":"https://doi.org/10.1515/9783112524305-002","url":null,"abstract":"","PeriodicalId":402004,"journal":{"name":"Februar 1984","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1984-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115659771","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}
Februar 1984Pub Date : 1984-12-31DOI: 10.1080/10256018408544976
H. Baumbach, K. Fichtler, R. Melzer, D. Tictze, H. Ullrich
{"title":"The Determination of Density Variation in Radiation Protective Walls of Concrete by Means of Bremsstrahlung of 10 MeV from Linear Accelerator","authors":"H. Baumbach, K. Fichtler, R. Melzer, D. Tictze, H. Ullrich","doi":"10.1080/10256018408544976","DOIUrl":"https://doi.org/10.1080/10256018408544976","url":null,"abstract":"Testing the function of meter-thick radiation protective walls as built e.g. for the reactor stacks of nuclear power plants shows that the relative density variations of concrete multiplied by the number of the mean free paths of the radiation in concrete have an effect on the dose rate variations behind the protective wall. It is therefore necessary to carefully control the density of concrete. If ultrasonic testing of the walls has to be excluded because they are hermetically enclosed with a steel liner on either side and gamma-radiography fails due to the mass per unit area in the order of several tons/m2, then another method, the transmission with bremsstrahlung of adequate energy, e.g. of 10 MeV, can be applied. Such bremsstrahlung can be received from a mobile and portable linear accelerator. In the paper the first results of the determination of density variations in a model wall of concrete having masses per volume area in the range from 1800 kg ⋅ m−3 to 2400 kg ⋅ m−3 and linear dimensions 1,60 m ...","PeriodicalId":402004,"journal":{"name":"Februar 1984","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1984-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116040904","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}
Februar 1984Pub Date : 1984-12-31DOI: 10.1515/9783112524305-006
F. Swailem, M. Hamza, A. Aly
{"title":"Isotopie Composition of Groundwaters from Kufra (Libya) as Indicator for Groundwater Formation","authors":"F. Swailem, M. Hamza, A. Aly","doi":"10.1515/9783112524305-006","DOIUrl":"https://doi.org/10.1515/9783112524305-006","url":null,"abstract":"","PeriodicalId":402004,"journal":{"name":"Februar 1984","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1984-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121637392","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}
Februar 1984Pub Date : 1984-12-31DOI: 10.1080/10256018408544977
D. Klötzer, W. Görner
{"title":"Metallbestimmung in 14C-markierten zinnorganischen Verbindungen durch Neutronenaktivierung","authors":"D. Klötzer, W. Görner","doi":"10.1080/10256018408544977","DOIUrl":"https://doi.org/10.1080/10256018408544977","url":null,"abstract":"This paper deals with the non-destructive short-time neutron activation analysis of tin. It includes experiments of photolysis on the system [1-14C]tributyltinoxide/cellulose, in which the neutron activation combined with other analytical principles backs kinetic, investigations of system photolysis and helps to clear up the structure of intermediate products.","PeriodicalId":402004,"journal":{"name":"Februar 1984","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1984-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134580266","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}
Februar 1984Pub Date : 1984-12-31DOI: 10.1080/10256018408544978
W. Helbig, S. Niese, D. Birnstein
{"title":"Untergrundlaboratorium für Messungen geringer Radioaktivität","authors":"W. Helbig, S. Niese, D. Birnstein","doi":"10.1080/10256018408544978","DOIUrl":"https://doi.org/10.1080/10256018408544978","url":null,"abstract":"An underground laboratory has been installed under 47 m rock covering (125 metres water equivalent), where the cosmic radiation ist diminished more than 40-fold. The massive laboratory building, 6 × 3.5 m2 by 3.4 m height, was erected on a foundation of 0.8 m serpentinite with a framework of old steel, forming walls and ceiling with 0.7 m thickness, filled with serpentinite. A Ge(Li)-detector of 75 m3 and 9.1% efficiency ist shielded by lead of 10 cm thickness. The background spectra are comparable with those of anticoincidence devices described in the literature. Detection limits for small samples amount to 0.025 Bq; for natural radioactivities of 1000 g samples to 0.15 ppm Th, 0.03 ppm U and 0.011% K2O for 12 h-measurements.","PeriodicalId":402004,"journal":{"name":"Februar 1984","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1984-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131810031","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}
Februar 1984Pub Date : 1984-12-31DOI: 10.1080/10256018408544974
H. Koch
{"title":"Nuclear Analytical Methods in the Semiconductor Industry","authors":"H. Koch","doi":"10.1080/10256018408544974","DOIUrl":"https://doi.org/10.1080/10256018408544974","url":null,"abstract":"The most important radio-analytical methods, used in microelectronics, such as activation analysis, tracer-techniques, autoradiography etc. and their performance limits (dection limit and senitivity) are presented. In this context the detection of areal substance distributions, the determination of depth distributions arc discussed other methods of general trace analytics are includet in these considerations for comparison. Possible applications and the necessary methodological developments and basic researches are derived from the requirements placed by microelectronics on isotope techniques and from the present state of the art. Some results obtained in cooperation with semiconductor-industry are discussed.","PeriodicalId":402004,"journal":{"name":"Februar 1984","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1984-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122280467","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}