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Landeka, M.; Kostial, K.; Kargachin, B.
Proceedings of the fourteenth Yugoslav symposium on radiation protection1987
Proceedings of the fourteenth Yugoslav symposium on radiation protection1987
AbstractAbstract
[en] Dietary additives (cow's milk, rat diet or some rat diet ingredients) were administered to 6-day-old artificially fed suckling rats. 141Ce was administered orally. Rat diet ingredients (fish meal, sunflower meal, alfalfa, cane molasses and premix) were found to be extremely efficient in reducing cerium retention even if administered two days after 141Ce application. (author) 4 refs.; 1 tab
Original Title
Prehrambeni dodaci kao metoda za snizhenje apsorbcije radiocera u mladih shtakora
Primary Subject
Source
Yugoslav Radiological Protection Association, Belgrade; vp; 1987; p. 273-276; Yugoslav Radiological Protection Association; Novi Sad (Yugoslavia); 14. Yugoslav symposium on radiation protection; Novi Sad (Yugoslavia); 8-11 Jun 1987
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Dawed, E.; Al-Waer, S.; Al-Muntaser, A.; Danilov, N.; Merenkov, S.; Trofimov, T.
Seminar on the use of research reactors in fundamental and applied sciences. Programme and abstracts1984
Seminar on the use of research reactors in fundamental and applied sciences. Programme and abstracts1984
AbstractAbstract
[en] Short communication
Source
Tajoura Nuclear Research Centre, Tripoli (Libya); 82 p; 1984; p. 36; Seminar on the use of research reactors in fundamental and applied sciences; Tajoura (Libyan Arab Jamahiriya); 16-20 Sep 1984; Also available from Tajoura Nuclear Research Centre, Tajoura/Tripoli, Libya
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Miscellaneous
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Kargachin, B.; Kostial, K.
Proceedings of the fourteenth Yugoslav symposium on radiation protection1987
Proceedings of the fourteenth Yugoslav symposium on radiation protection1987
AbstractAbstract
[en] We investigated the influence of oral and parenteral administration of chelation therapy on the retention of 141Ce in young rats. Opposite to results obtained in adult rats present results show high efficacy of oral chelation therapy in reducing radiocerium retention in the whole body and organs of suckling rats. (author) 3 refs
Original Title
Utjecaj kelatogene terapije (DTPA) na smanjenje retencije 141Ce u shtakora
Primary Subject
Source
Yugoslav Radiological Protection Association, Belgrade; vp; 1987; p. 270-272; Yugoslav Radiological Protection Association; Novi Sad (Yugoslavia); 14. Yugoslav symposium on radiation protection; Novi Sad (Yugoslavia); 8-11 Jun 1987
Record Type
Book
Literature Type
Conference
Country of publication
AMINO ACIDS, ANIMALS, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, CARBOXYLIC ACIDS, CERIUM ISOTOPES, CHELATING AGENTS, DAYS LIVING RADIOISOTOPES, DRUGS, EVEN-ODD NUCLEI, INTERMEDIATE MASS NUCLEI, ISOTOPES, MAMMALS, MEDICINE, NUCLEI, ORGANIC ACIDS, ORGANIC COMPOUNDS, RADIOISOTOPES, RADIOPROTECTIVE SUBSTANCES, RARE EARTH NUCLEI, RESPONSE MODIFYING FACTORS, RODENTS, VERTEBRATES
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AbstractAbstract
No abstract available
Original Title
Etude du stockage des reserves par les abeilles au moyen d'un sirop de sucre marque au 141Ce
Primary Subject
Record Type
Journal Article
Journal
Apidologie; v. 5(2); p. 107-126
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AbstractAbstract
[en] To study the effects of LH on total testicular blood flow and microcirculation, rats were treated with 2,5 or 25 μg LH sc and measurements were made on control rats and on LH-treated rats 1,2,3,4,6 and 12 h, after treatment. After treatment with 25 μg LH, total testicular blood flow, as measured with the radioactive microsphere method, was decreased at 6 h and increased at 12 h. Testicular microcirculatory blood flow was recorded with laser Doppler flowmetry and regular oscillations in blood flow, vasomotion, was observed in control rats. Vasomotion was not present 4 and 6 after treatment with 25 μg LH, but returned at 12 h. Prior to and concomitantly with these changes in vasomotion, polymorphonuclear leukocytes accumulated in testicular microvessels and migrated into the interstitial tissue. These changes were followed, 6 h after treatment, by an increased vascular permeability, measured as increased testicular interstitial fluid volume. The lower dose of LH (2.5 μg), doubled plasma testosterone concentration and initially decreased interstitial fluid volume, and later induced a slight increase in blood vessel leukocytes. At the times studied, no changes could be observed in the other vascular parameters. In conclusion, it is suggested that LH, probably via some Leydig cell product, promotes regulatory effects on testicular microcirculation, but different magnitudes of LH stimulation induce different responses. (author)
Primary Subject
Record Type
Journal Article
Journal
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ANIMALS, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BODY, CARBOHYDRATES, CERIUM ISOTOPES, DAYS LIVING RADIOISOTOPES, EVEN-ODD NUCLEI, GLYCOPROTEINS, GONADOTROPINS, GONADS, HORMONES, INTERMEDIATE MASS NUCLEI, ISOTOPES, MALE GENITALS, MAMMALS, NUCLEI, ORGANIC COMPOUNDS, ORGANS, PEPTIDE HORMONES, PITUITARY HORMONES, PROTEINS, RADIOISOTOPES, RARE EARTH NUCLEI, RODENTS, SACCHARIDES, VERTEBRATES
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Singh, M.P.; Singh, Bhajan; Sandhu, B.S., E-mail: bavir@pbi.ac.in
International conference on Medical Physics and twenty ninth annual conference of Association of Medical Physicists of India : souvenir and book of abstracts2008
International conference on Medical Physics and twenty ninth annual conference of Association of Medical Physicists of India : souvenir and book of abstracts2008
AbstractAbstract
[en] An accurate method for the in vivo determination of stable iodine concentration of tissues during kinetic studies of radiographic substances containing iodine is required. The currently used non-destructive methods, based on the detection of X-ray fluorescent photons, suffer from the limitation due to interfering effect of the attenuation of radiation in the tissue layers overlying the site to be measured. In the present work, the photon scattering method suggested by Pumumalainen et al., is successfully applied for for the qualitative assesment of soft tissue iodine content. The method involves the measurement of the intensity ratio of Rayleigh to Compton scattered photons in a narrow beam geometry. In the present work, measurements are made to study the variation of iodine concentration in water which simulates the kinetics of thyroid iodine, using Rayleigh and Compton scattered photons of incident energy 145 keV. The scattered gamma rays are detected by a high resolution HPGe semiconductor detector. The experiment is performed for different concentrations of KI in the range from 2gm to 10gm in step of 2gm in 10 ml of distilled water. The intensity ratio of coherent to Compton scattered peaks, corrected for photo-peak efficiency of the gamma detector and absorption of photons in the target and air is determined for various concentrations of KI solution
Primary Subject
Source
Association of Medical Physicists of India, Mumbai (India); 166 p; 2008; p. 64-65; ICMP-2008: international conference on medical physics; Mumbai (India); 26-29 Nov 2008; 29. annual conference of Association of Medical Physicists of India; Mumbai (India); 26-29 Nov 2008; 2 refs., 2 figs.
Record Type
Book
Literature Type
Conference
Country of publication
BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BODY, CERIUM ISOTOPES, DAYS LIVING RADIOISOTOPES, DISEASES, DOSES, ELEMENTS, ENDOCRINE GLANDS, EVEN-ODD NUCLEI, GLANDS, HALOGENS, INTERMEDIATE MASS NUCLEI, ISOTOPES, MEDICINE, NONMETALS, NUCLEAR MEDICINE, NUCLEI, ORGANS, RADIOISOTOPES, RADIOLOGY, RARE EARTH NUCLEI, THERAPY
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Merritt, J.S.; Gibson, F.H.
Atomic Energy of Canada Ltd., Chalk River, Ontario. Chalk River Nuclear Labs1977
Atomic Energy of Canada Ltd., Chalk River, Ontario. Chalk River Nuclear Labs1977
AbstractAbstract
[en] A standard of 141Ce was measured with dose calibrators by the U.S. National Bureau of Standards (NBS) and several Canadian hospitals. The results varied by approximately 30% and indicate a need for improved calibration of these instruments in Canadian hospitals. Details of the NBS method of calibration are given as a commendable example. The suitability of 141Ce as a simulated standard for 6-hour 99Tcsup(m) is discussed. It is suggested that the following are needed: a Canadian commercial supplier of standards of radionuclides, improved measurement capabilities in nuclear medicine clinics and more detailed information and guidance from suppliers of dose calibrators. Appendices to this report describe the standardization of 141Ce by the 4πβ-γ coincidence method and calibration of the Chalk River Nuclear Laboratories 4πγ ionization chamber for 141Ce. (author)
Primary Subject
Source
Dec 1977; 22 p; 22 refs.
Record Type
Report
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Country of publication
BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, CERIUM ISOTOPES, COUNTING TECHNIQUES, DAYS LIVING RADIOISOTOPES, EVEN-ODD NUCLEI, HOURS LIVING RADIOISOTOPES, INTERMEDIATE MASS NUCLEI, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, NUCLEI, ODD-EVEN NUCLEI, RADIOISOTOPES, RARE EARTH NUCLEI, TECHNETIUM ISOTOPES, YEARS LIVING RADIOISOTOPES
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INIS VolumeINIS Volume
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AbstractAbstract
[en] Published in summary form only
Original Title
Stanoveni distribuce exogennich necistot v produktech z neuklidnene oceli s vyuzitim radionuklidu
Primary Subject
Source
Obrusnik, I.; Frana, J. (eds.); Ceskoslovenska Spektroskopicka Spolecnost, Prague (Czechoslovakia); 42 p; May 1991; p. 35-36; Conference on instrumental activation analysis IAA 91; Konference o instrumentalni aktivacni analyze IAA 91; Klucenice (Czechoslovakia); 3-7 Jun 1991
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Miscellaneous
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AbstractAbstract
[en] The suitability of 141Ce as a particulate digesta flow tracer is studied in sheep. The amount and the factors of cerium uptake on feed particles by incubating alfalfa hay and sorghum seeds in water containing 141Ce in solution are determined. After soaking one hour, 80% radioactivity is retained on the hay 17% on the sorghum. Incubation time is the main factor determining uptake rate. This uptake is solid on the hay and more fragile on the sorghum. The evolution of 141Ce distribution among the different physical constituents of rumen digesta is studied on two sheep given a single radioactive meal (10μCi). These sheep are fitted with a rumen cannula and fed twice daily with hay (80%) and sorghum (20%). There is little 141Ce in solution in the supernatant liquid after centrifugation of digesta. At the end of the 'labelled' meal, specific radioactivity (RAS) of liquid-phase digesta, separated by filtering on two layers of gauze, is equal to or higher than the RAS of the solid phase. It increases up to the next unlabelled meal and then decreases. Microorganisms may cause this transfer of liquid-phase radioactivity to the large particles. Specific radioactivity of the microorganisms remains very high after the 'labelled' meal as compared to that of different granulometric fractions of solid digesta
[fr]
Deux experiences a caractere methodologique ont ete realisees pour etudier l'aptitude du cerium-141 a etre utilise comme marqueur de la phase solide des contenus digestifs. On a determine l'importance et les facteurs de la fixation du cerium-141 par trempage dans une solution radioactive sur un foin (luzerne) et une cereale (sorgho). La fixation du cerium est rapide et principalement conditionnee par le temps de trempage. Le taux de fixation est important dans le cas du foin et apparemment plus faible avec la cereale. La fixation du cerium est solide sur le foin, plus fragile sur la cereale. Sur deux moutons munis d'une canule du rumen, on a etudie l'evolution de la repartition du cerium entre les differents constituants physiques du contenu de rumen, apres ingestion d'un seul repas radioactif. Le liquide du rumen, isole par centrifugation energique, contient toujours une quantite de radioactivite negligeable. Le cerium reste fixe sur les particules alimentaires au cours de leur degradation. Apres ingestion d'aliments non marques, il se produit un transfert de radioactivite du jus de rumen sur la phase solide des contenus. La radioactivite specifique des microorganismes est toujours plus elevee que celle des particules de taille superieure. Les microorganismes pourraient etre responsables du transfert de radioactivite observe apres un repas non marqueOriginal Title
Utilisation du cerium-141 comme marqueur de la phase solide des contenus digestifs chez le ruminant. I. Conditions de fixation sur les aliments et comportement dans le contenu de rumen in vivo
Primary Subject
Record Type
Journal Article
Journal
Ann. Biol. Anim. Biochim. Biophys; v. 16(5); p. 731-739
Country of publication
ANIMAL FEEDS, ANIMALS, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BODY, CERIUM ISOTOPES, DAYS LIVING RADIOISOTOPES, DIGESTIVE SYSTEM, EVEN-ODD NUCLEI, FOOD, GASTROINTESTINAL TRACT, INTERMEDIATE MASS NUCLEI, ISOTOPE APPLICATIONS, ISOTOPES, MAMMALS, NUCLEI, ORGANS, PLANTS, RADIOISOTOPES, RARE EARTH NUCLEI, VERTEBRATES
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Lohar, Sharad P.; Rajeswari, A.; Vimalnath, K.V.; Jagadeeshan, K.C.; Shivarudrappa, V.
Proceedings of second DAE-BRNS international symposium on materials chemistry2008
Proceedings of second DAE-BRNS international symposium on materials chemistry2008
AbstractAbstract
[en] Characterization of a nuclear fuel for its uniformity, linear density, concentration of fissile material, total length, local hot spots etc. is usually carried out using passive and active gamma ray assay techniques. 57Co due to its favourable radiation characteristics (T1/2:271.8 days, Eγ: 122 keV (85.5%)) is radionuclide of choice in active gamma assay techniques as an external radiometry source in such applications. The energy of gamma rays emitted, its abundance and the half life are the criterion for the selection of the source used. However, 57Co is to be imported and due to its very high cost and difficulty in procurement, availability of a suitable indigenously produced radiometry source for such applications was a long felt need from the users in the department. 141Ce with an half life of 32.7 d and having comparable gamma emission Er145 keV (100% ) was considered as a possible substitute for imported 57Co source. The feasibility of its production by neutron irradiation and the fabrication of a sealed source for radiometric applications was therefore studied
Primary Subject
Source
Nigam, S.; Banerjee, A.M.; Bhattacharyya, K.; Varma, S.; Bharadwaj, S.R.; Jain, V.K.; Das, D. (Chemistry Division, Bhabha Atomic Research Centre, Mumbai (India)) (eds.); Society for Materials Chemistry, Chemistry Division, Bhabha Atomic Research Centre, Mumbai (India); Board of Research in Nuclear Sciences, Dept. of Atomic Energy, Mumbai (India); 504 p; ISBN 81-88513-26-1;
; Dec 2008; p. 67; ISMC-08: 2. DAE-BRNS international symposium on materials chemistry; Mumbai (India); 2-6 Dec 2008; Abstract prepared

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