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Original Title
Conteneurs de transport de produits nocifs
Primary Subject
Source
11 Aug 1972; 33 p; FR PATENT DOCUMENT 2150115/D/; Available from INPI, Paris; Available from Institut National de la Propriete Industrielle, Paris (France) Priority claim 13 Aug 1971.
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Patent
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AbstractAbstract
[en] This nomenclature is intended to give accurate descriptions of some common or important naturally occurring and synthetic constituents of aggregates for radiation-shielding concrete, that, at the same time, are not common or important constituents of concrete aggregates in general use. While most of the minerals and rocks discussed below may occur in small quantities in aggregates in general use, they are not major constituents of such aggregates. Common constituents of aggregates in general use are described in ASTM Descriptive Nomenclature C 294, Constituents of Natural Mineral Aggregates. Radiation-shielding concrete often contains such aggregates but other special aggregates are used in some circumstances. The synthetic aggregates included are ferrophosphorus and boron frits. The descriptions are not adequate to permit the identification of materials, since accurate identification of natural and synthetic aggregate constituents in many cases can only be made by a qualified geologist, mineralogist, or petrographer, using the apparatus and procedures of these sciences
Primary Subject
Source
1976; 5 p; American Society for Testing and Materials (ASTM); Philadelphia, PA (USA); ASTM-C--638; ANSI-N--649-1975
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Book
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Standard
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AbstractAbstract
[en] The coexistence of Al and Si has a significant impact on the electromagnetic shielding effectiveness (SE) of Ti3(Al, Si)C2 ceramics and the total SE (SET) peaked when mol(Al): mol(Si) = 1:1. Ti3(Al1/2Si1/2)C2 ceramic exhibit high SET around 47 dB and excellent frequency-stability within X-band frequency. The high SET originates from both high reflection and absorption. High reflection is related to the larger amounts of defects, while high absorption was ascribed to the higher Ohimic loss and coarse microstructure which is beneficial for multiple reflections. Results indicate that Ti3(Al1/2Si1/2)C2 ceramic could be considered as promising structural electromagnetic shielding materials.
Primary Subject
Source
Copyright (c) 2019 Springer Science+Business Media, LLC, part of Springer Nature; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Journal of Materials Science. Materials in Electronics; ISSN 0957-4522;
; CODEN JSMEEV; v. 30(12); p. 11011-11016

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AbstractAbstract
[en] Half value layer (radiation energy) of 90deg scattered radiation shielding materials was measured at 1 m distance from the central ray of the primary beam. Scattered radiation was measured from 100 to 200 kVp for 0-2.0mm Cu+1.0mm Al added filter in the primary beam for a deep therapeutic unit, the obtained result results were as follows: 1. The ratio of scattered radiation to primary radiation was increased by the using lighter filter. 2. The ratio of scattered radiation to primary radiation was decreased by using heavier filter. 3. The ratio of scattered radiation to primary radiation was independent of tube voltage. 4. The scattered radiation of high energy was produced, when the effective atomic number and density of shielding material were high. (Author)
Primary Subject
Record Type
Journal Article
Journal
Journal of the Korean Research Society of Radiological Technology; v. 4(1); p. 15-22
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Tugrul, B.; Yavuz, M.A.; Okka, M.
Istanbul Technical Univ. (Turkey). Inst. for Nuclear Energy1986
Istanbul Technical Univ. (Turkey). Inst. for Nuclear Energy1986
AbstractAbstract
[en] Small volumes with lead brick and lead glass shielding are used, and in nuclear technology we call them ''hot cell''. Furthermore for separating the exposure rooms from the operator rooms lead glassed windows of heavy concreate walls can be used. Unfortunately, these glasses can not be produced in Turkey. ordinary crystals which have lead-oxide in them, can be produced in Turkey, in this essay we have investigated the usage of ordinary crystals for the radiation shielding. Crystals have been tested with different types of radiation and ''radiation absorbtion'' curves, ''half thickness'' and ''tenth value thickness'' have been calculated. (author)
Original Title
Radyasyon zirhlamasi amaciyla kristal camlarin kullanimi
Primary Subject
Source
1986; 5 p; Industrial cooperation in the field of nuclear technology; Istanbul (Turkey); 15-17 Oct 1986
Record Type
Miscellaneous
Literature Type
Conference
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AbstractAbstract
[en] The invention aims to propose a concrete additive which, alone, brings together a high density property able to stop the gamma radiations, combined with a large cross section, able to capture the thermal neutrons. With this in view, the first object of the invention is the application of granular cast iron containing around 0.1 to 5% boron by weight. Its further object is the fabrication of this granular material, characterized by a preparation in the cupola furnace into which is injected a boron compound, preferably ore containing boron
[fr]
L'invention vise a proposer un additif pour beton qui, a lui seul, reunit une propriete de densite elevee propre a freiner les rayonnements gamma, combinee a une grande section efficace, apte a capturer les neutrons thermiques. A cet effet, l'invention a pour premier objet l'application d'une grenaille de fonte qui contient environ 0,1 a 5% en poids de bore. Elle a enfin pour objet un procede de fabrication d'une telle grenaille, caracterisee par une preparation au cubilot dans lequel on injecte un compose du bore, de preference un minerai contenant du boreOriginal Title
Grenaille au bore et application de cette grenaille a la realisation de beton pour la protection contre les radiations nucleaires
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Secondary Subject
Source
30 May 1980; 5 p; FR PATENT DOCUMENT 2440410/A/; Available from Institut National de la Propriete Industrielle, Paris (France)
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Patent
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[en] Sulfur coated colemanite particles were used as coarse aggregate in concrete. It was found that the boron content of concrete could be increased to a value about four times larger than those reached in the past. As the amount of sulfur coated colemanite increases in the concrete, the density and the compressive strength decrease, but the total water content increases. The fast neutron flux slowly decreases with the increased colemanite, while the thermal flux is lowered in great extent. The total radiation dose is not considerably increased even though the colemanite content is increased twice that of the ones used in the past. (author)
Primary Subject
Record Type
Journal Article
Journal
Turkish Journal of Nuclear Sciences; v. 9(2); p. 64-71
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AbstractAbstract
[en] Baritosiderite with a minimal content of 40% of barite is used as aggregate for concrete. The specific weight of the baritosiderite is minimally 3.70 g/cm3. The corrective component for increasing bulk density of heavy concrete is cast iron grit and steel fragments. Other used components are water, cement and plasticizers. (J.B.)
Original Title
Tazky beton
Primary Subject
Source
15 Sep 1982; 26 Jun 1978; 2 p; CS PATENT DOCUMENT 203406/B/; CS PATENT APPLICATION PV 4176-78; Application date: 26 Jun 1978
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Patent
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AbstractAbstract
[en] Specification with metric dimensions for two systems of interlocking lead bricks for building permanent or temporary shielding walls including numbering system with illustrations, and schedule for ordering purposes. (author)
Primary Subject
Secondary Subject
Source
1969; 24 p; British Standards Institution; London (UK); BS--4513:1969; Specification confirmed 1981. Price Pound9.40.
Record Type
Book
Literature Type
Standard
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Hirscheider, E.; Balk, O.
Gesellschaft fuer Strahlen- und Umweltforschung m.b.H. Muenchen, Neuherberg (Germany, F.R.)1980
Gesellschaft fuer Strahlen- und Umweltforschung m.b.H. Muenchen, Neuherberg (Germany, F.R.)1980
AbstractAbstract
[en] The form-fitting brick allows to form simple geometric figures like straight lines, angles, polygons and crosses and to cover surfaces homogeneously without making use of another shape of brick. The brick has got superficies consisting of plane rectangular quadrangles part of which showing a concave connecting contour for the adjoining brick which has got a convex connecting contour. According to the invention both external ends of the concave connecting contours are shaped as reinforcing ribs. The bricks may be manufactured from concrete. The description mentions some variants. (UWI)
[de]
Der Strahlenschutz-Formbaustein erlaubt es, einfache geometrische Figuren wie Geraden, Winkel, Vielecke und Kreise zu bilden und Flaechen homogen auszulegen, ohne dass auf eine andere Steinform zurueckgegriffen wird. Der Stein besitzt Mantelflaechen aus ebenen rechtwinkligen Vierecken, ein Teil der Mantelflaechen weist eine konkave Anschlusskontur fuer den benachbarten Stein auf, der eine entsprechende konvexe Anschlusskontur besitzt. Erfindungsgemaess sind die beiden aeusseren Enden der konkaven Anschlusskonturen als Verstaerkungsrippen ausgebildet. Die Steine koennen aus Beton ausgefuehrt werden. Die Beschreibung gibt einige Varianten an. (UWI)Original Title
Strahlenschutz-Formbaustein
Primary Subject
Secondary Subject
Source
3 Apr 1980; 6 p; DE PATENT DOCUMENT 2700088/C/; Available from Deutsches Patentamt, Muenchen, Germany, F.R
Record Type
Patent
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