ヘッダー画像

タグ「90Sr」

Radiation effects on the reproductive system of teleost fish – the consequences of the Chernobyl disaster

Title: Radiation effects on the reproductive system of teleost fish – the consequences of the Chernobyl disaster

Author: Belova, Natalia Vasilyevna

Reference: Moscow, 2008

Keywords: ichthyology, reproductive system, teleost fish, radiation factor, cesium-137, strontium-90, water reservoirs

Abstract: Research purpose; to give a comprehensive assessment of the radiation factor impact (137Cs and 90Sr contamination) after the Chernobyl disaster on the reproductive system and reproductive ability of some species of teleost fish in reservoirs of various types.

URL:http://www.dissercat.com/content/radiatsionnoe-vozdeistvie-na-vosproizvoditelnuyu-sistemu-kostistykh-ryb-posledstviya-cherno-0

Radiation control and monitoring of agricultural products in the context of global and local radioactive fallout

Title: Radiation control and monitoring of agricultural products in the context of global and local radioactive fallout

Author: Kalmykov, Mikhail Viktorovich

Reference: Moscow, 2001

Keywords: animals, plants, soil, agriculture, Russia, veterinary radiological control, monitoring, forage, cesium-137, strontium-90

Abstract: The aim of the thesis – to review and analysis of the general laws of radiation situation formation in the sphere of agricultural production in Russia and other individual regions of the country – radio-ecological justification of veterinary radiological control, monitoring, rationing of radionuclide content in the forage and the development of acceptable levels of their content

URL:http://www.dissercat.com/content/radiatsionnyi-kontrol-i-monitoring-selskokhozyaistvennoi-produktsii-v-usloviyakh-globalnykh-

Radiocontamination of the Environment and its Effects on the Mother and Fetus III, PART I–RETENTION OF CESIUM 137 DURING PREGNANCY: AN INTER-LABORATORIES STUDY

Title: Radiocontamination of the Environment and its Effects on the Mother and Fetus III, PART I–RETENTION OF CESIUM 137 DURING PREGNANCY: AN INTER-LABORATORIES STUDY

Author: Sternberg J, Nagai T, Fujimori H, Kimura Y.

Reference: International Journal of Applied Radiation and Isotopes, 1970, Vol. 21, pp. 351-362.

DOI: http://dx.doi.org/10.1016/0020-708X(70)90147-X

Keywords: radiocontamination, environment, cesium 137, strontium 90, pregnancy

Abstract: The determination of cesium 137 and strontium 90 in human placments was carried out in different laboratories in Japan and Canada, in order to standardize the radioassay procedures. Placentas from normal term deliveries were collected and measured for a period of 12–16 months in the Tokyo and Osaka areas in Japan and in the Montreal area in Canada.

Two procedures required the ashing of the entire placenta prior to radioassay. In the Tokyo group, the ashed organ was placed in a two NaI crystal system, in an almost 4π geometry, and the γ radiation was measured. The Osaka group continues the chemical separation of cesium by precipitation with chloroplatinate; the β radiation is then further measured with an anticoincidence system.

URL: http://www.sciencedirect.com/science/article/pii/0020708X7090147X#

The contents in ground, products and entering of 90Sr and 137Cs global fall-out into the organism of the people inhabitants before the failure on the Chernobyl atomic power station

Author: Mironchik A. F.

Reference: Bulletin of Belorussian-Russian University, 2008

ISSN: 2077-8481

DOI: 631.438 : 658.562

Keywords: 90sr, 137cs, accumulation, agricultural products, before Chernobyl disaster

Abstract: The paper outlines the latitude dependence of radioactive substances fall-out after nuclear weapon tests on the territory of the globe and the accumulation of 137Cs and 90Sr in different kinds of agricultural products produced in the former USSR before the Chernobyl disaster. The available data are compared with results given by other countries.

URL: http://elibrary.ru/item.asp?id=17101280

Prognosis of accumulation of 137Cs and 90Sr in the herbage of the main types of the Belarus Polessje meadows using agrochemical soil properties

Author: Podolyak A. G., Timofeev S. F., Grebenshikova N. V., Arastovich T. V., Zhdanovich V. P.

Reference: Gazette “РАДИАЦИОННАЯ БИОЛОГИЯ. РАДИОЭКОЛОГИЯ “ (Radiation Biology, Radioecology), 2005

ISSN: 0869-8031

DOI: 574.41.5:539.163:633.2.031:631.82: 631.86:546.36:546.42

Keywords: 137cs, 90sr, accumulation, agricultural sphere, soil

Abstract: On the basis of long-term stationary experience it was established that the minimum accumulation quantities for 137Cs and 90Sr in the herbage of the dry, lowland and flood-plain types of the Belarus Polessje meadows contaminated with Chernobyl radionuclides are determined when the optimum of basic agrochemical soil properties is achieved with application of the scientifically reasonable protective measures. For remote prognosis of radionuclide contents in natural and cultural meadow herbage the use of transfer factors (TFa, (Bq/kg)(kBq/m2)) based on the complex agrochemical parameters–agrochemical cultivation soil index (Icd) and basic saturation degree (V, %), which take into account some soil characteristics simultaneously, is a streamlined approach. This paper provides the equations of linear and multiple regressions, which can be used to calculate the transfer factors for 137Cs and 90Sr uptake and the herbage contamination degree for the main types of meadows of the region, that will allow reducing the volume of forage production (hay, green bulk), which is not adequate to established permissible levels: “Republican allowable levels of the contents of 137Cs and 90Sr in agricultural raw material and forages”.

URL: http://lib.bioinfo.pl/pmid:15810531

Dynamics of radiostrontium leaching from radioactively contaminated floodplain soils of the Yenisei River (English)

Author: E. K. Legin, Yu. I. Trifonov, M. L. Khokhlov, D. N. Suglobov, E. E. Legina, V. K. Legin

Reference: Gazette “Radiochemistry“, 2008

ISSN:

DOI: 10.1134/S1066362208010177

Keywords: strontium, decontamination, waterlogged soils, 90sr, 137cs, river

Abstract: Gleyzation-mediated leaching of radiostrontium from floodplain soils of the Krasnoyarsk Mining and Chemical Combine (MCC) activity zone [Atamanovskii Island (front part), Oseredysh Island (front part), and Berezovyi Island (rear part)] is studied with model systems. Leaching of radiostrontium from waterlogged soils is analyzed in terms of the model of anaerobic biosolubilization of gel films. The leaching of radiostrontium is found to correlate with that of iron, confirming the cosolubilization model. Addition of glucose (0.5%) as a stimulant for growth of iron-reducing microorganisms increases the dynamic coefficient of radiostrontium leaching, particularly in soils with lower organic matter content. The model experiments showed that the radiostrontium leaching rate from floodplain soil is higher by 2–3 orders of magnitude than that of radio-cesium, suggesting the possibility of escape of radiostrontium from the floodplain of the Yenisei River with the intrasoil runoff. This conclusion is supported by the experimental data on the 90Sr/137Cs ratio in the floodplain of the Yenisei River downstream of MCC (0.01–0.1).

URL: http://link.springer.com/article/10.1134%2FS1066362208010177?LI=true#

Dependence of radionuclide migration, in the fruit cenosis in ordinary leached chernozem soil horizont, on the depth of its occurrence

Author: Mel’chenko A.I.

Reference: Gazette “ТРУДЫ КУБАНСКОГО ГОСУДАРСТВЕННОГО АГРАРНОГО УНИВЕРСИТЕТА“ (Proceedings of Kuban State Agrarian University), 2008

ISSN: 1999-1703

DOI:

Keywords: plant, vertical migration of 90sr, chernozem

Abstract: In the territory of All-Russian research institute of biological plant protection (Russian academy of agricultural sciences), in the field in orchard, difference in the vertical migration of radionuclides (90Sr) was studied in the soil layer of ordinary leached chernozem, depending on the depth of its original location.

URL: http://elibrary.ru/item.asp?id=11619543

SPECIFIC FEATURES OF THE FORMATION OF THE TECHA RIVER RADIOACTIVE CONTAMINATION

Author: Glagolenko Yu.G., Drozhko E.G., Mokrov Yu.G.

Reference: Gazette “ВОПРОСЫ РАДИАЦИОННОЙ БЕЗОПАСНОСТИ“ (Issues on radiation safety), 2007

ISSN: 1816-9643

DOI: 546.42 : 551.48

Keywords: Techa river, beta-emitting radionuclides, alpha-emitting radionuclides, long-lived 90sr and 137cs, Mayak production

Abstract: During 1949-1956 while implementing the State defense program by the Mayak Production Association routine (specified in the detail design) and accidental discharges of the liquid radioactive waste (LRW) into the open hydrographic system of the Techa river were performed. The discharged LRW consisted mainly of beta-emitting radionuclides of fission-fragment origin with half-life from several days to dozens of years and insignificant amounts (traces) of alpha-emitting nuclides (U, Pu, Am). By the middle of the 1960-s practically all the radionuclides contained in the discharged LRW had been subjected to the natural radioactive decay, and the river system radioactive contamination was determined only by the long-lived 90Sr and 137Cs and to a considerably lesser degree by the plutonium (238, 239, 240Pu) and 99Тс. The major part of the activity of the mentioned above radionuclides was deposited upon the swampy flood-plain area (Asanovsky swamps) in the upper Techa river. The following sources of the Techa river water radioactive contamination have been studied in this wok: – sorption-desorption of the activity from the Asanovsky swamps (90Sr); – bottom sediment stirring and activity transfer with suspensions (137Cs, Pu); – overland radioactive run-off from the catchment territory of the Techa river contaminated as a result of accidents occurred in 1957 and 1967 (90Sr, 137Cs); – filtration transfer of the activity from the Techa reservoir cascade (tritium, 90Sr). The data on activity margin of 90Sr, 137Cs, Pu and 99Тс deposited upon different river sections are provided. The analysis of the experimental and calculated data on volumetric activity and radioactive run-off of tritium, 90Sr, 137Cs, 99Tc and plutonium with the Techa river water depending on the water flow in the river is presented.

URL: http://elibrary.ru/item.asp?id=11643606

Evaluation and prediction of radio-ecological situation in radiation accidents with the release of particles of irradiated nuclear fuel: the example of Chernobyl

Title: Evaluation and prediction of radio-ecological situation in radiation accidents with the release of particles of irradiated nuclear fuel: the example of Chernobyl

Author: Kashparov, Valery Alexandrovich

Reference: Kiev, 1999

Keywords: radiobiology, forecasting, nuclear fuel, 90Sr

Abstract: The aim of this study was to identify and analyze the main processes of formation of radiological patterns of behavior in the environment of biologically significant radionuclides composed of fuel particles deposited after the Chernobyl accident, their parameterization based on the study of the properties of radioactive fallout and the characteristics of the environment, zoning and mapping of near-field accident zone for long-term forecasting of redistribution of radionuclides in the components of soil and vegetation cover, as well as the assessment of the radiological significance access of fuel particles into humans and farm animals.

URL:http://www.dissercat.com/content/otsenka-i-prognozirovanie-radioekologicheskoi-obstanovki-pri-radiatsionnykh-avariyakh-s-vybr

Radio-ecological measures justification to reduce radiation loads in the population by using livestock’s contaminated products.

Title: Radio-ecological measures justification to reduce radiation loads in the population by using livestock’s contaminated products.

Author: Averin, Victor Sergeyevich

Reference: Gomel, 1999

Keywords: population, animal husbandry, 90Sr, 137Cs

Abstract: Research aim: Based on the study of behavior patterns ~ Cs and Sr in the animals’ body, the choice of methodology usage forage and evaluation of the expected collective dose, formed in the population as a result of purposeful flows change of radionuclides in the biological chain→soil – plant – animal – human; to develop radio-ecological justification of measures to reduce radiation loads within the population by using livestock’s contaminated products

URL:http://www.dissercat.com/content/radioekologicheskoe-obosnovanie-sistemy-mer-po-snizheniyu-radiatsionnykh-nagruzok-u-naseleni

▲ページの先頭へ戻る