A summary of incidents involving radioactive material in atomic energy activities, Jan.-Dec. 1956 /

"This publication is intended to summarize the incidents involving radioactive materials which occurred in atomic energy activities during 1956. It supplements TID-5360, 'A summary of accidents and incidents involving radiation in atomic energy activities--June 1945 thru December 1955'"--Preface.

Providing for a comprehensive, long-range, and coordinated national program in oceanography.

"Report to accompany H.R. 12601."

Radioactive isotopes in the United States hospitals : a survey of hospital administrators' problems up to 1957 /

"Contract No. AT(40-1)-Gen-33."

Utilization of radioactive isotopes in coal process research : final report - task 1 /

"March 1, 1959 - March 31, 1960."

Reconnaissance for radioactive deposits in the Darby Mountains, Seward Peninsula, Alaska, 1948.

Mode of access: Internet.

Reconnaissance for radioactive deposits in the Ruby-Poorman and Nixon Fork districts, west-central Alaska, 1949,

Mode of access: Internet.

Selected bibliography on radioactive occurrences in the United States /

"May 1970."

Selected bibliography on radioactive occurrences in Africa, Australia, Canada, Europe, Mexico, New Zealand and South America /

On cover: PB 187 561.

Interim management plan for low-level radioactive waste in Illinois, 1986-1992 : draft /

"May, 1985."

Determinação da velocidade e sentido do fluxo de águas subterrâneas utilizando radioisótopos pela técnica do poço único

Metodologia radioisotópica, através da técnica do poço único, foi empregada com o objetivo de determinar a velocidade e o sentido de deslocamento do fluxo de águas subterrâneas, utilizando traçadores radioativos, em poços piezométricos situados no campus da Universidade Federal do Pará (UFPA), em Belém-PA, às margens do Rio Guamá. Foi utilizado o iodo-131 como radiotraçador e a aquisição dos dados foi feita através de sistema espectrométrico, utilizando detectores de radiação. A aplicação dessa técnica na determinação conjunta da velocidade e sentido do fluxo, embora não seja usual, permitiu concluir que se trata de uma alternativa promissora que pode ser aplicada rotineiramente, proporcionando clareza e segurança nos resultados.

Geochemistry and radionuclide content of sediment and water samples obtained from the Ob and Irtysh river, Russia

This paper reports the results of the investigations of 2006-2007 on the distribution and migration forms of artificial radionuclides and chemical elements in the Ob-Irtysh water system. Three regions were studied. One of them is a local segment of the Ob River upstream from the confluence with the Irtysh River; its investigation allowed us to estimate the general radioecological state of the aquatic environment affected by the activity of the Tomsk 7 plant. The second region is a local segment of the Irtysh River upstream from its confluence with the Ob River, where the influence of emissions from the NPO Mayak could be estimated. The third region is the water area of the Ob River after its confluence with the Irtysh River. It characterizes the real level of radioactive and chemical contamination of the middle reaches of the Ob River. In order to explain horizontal variations in the distribution of radionuclides in the upper layer of bottom sediments collected at various sites, the results of sorption-kinetic experiments with radioactive tracers in the precipitate-solution system were used. The investigation of the migration forms of trace elements and radionuclides occurring in river water was based on the method of tangential-flow membrane filtration. Chemical element contents were determined in 400-ml water samples. A set of Millipore polysulfone membranes with pore sizes of 8, 1.2, 0.45, 0.1, and 0.025 µm was employed. Taking into account the ultralow specific concentrations of radionuclides in the water, they were analyzed in 300-500 litre samples using Millipore polysulfone membranes with pore sizes of 0.45 µm and 15 kDa. This allowed us to estimate the percentages of cesium-137 and plutonium-239, 240 in the suspended particulate fraction, colloids, and dissolved species.

Tagged atom method of studying the biosynthesis of chlorophyll (Metod mechenych atomov v izuchenii biosinteza chlorofilla)

Translated from a publication of the Academy of Sciences, of Belorussiya, S.S.R., Minsk, 1956.