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AbstractAbstract
[en] This work is an attempt to concentrate on the thermodynamic theory, the engineering solution and the quantities of water needed for the operation of a wet as well as a wet/dry cooling towers coupled to a nuclear turbine condenser,. About two hundred variables are needed for the design of a condenser - cooling tower system. In order to make the solution fast and handy, a computer model was developed. The amount of water evaporation from cooling towers is a function of the climate conditions prevailing around the site. To achieve an authentic analysis, the meteorological data of the northern Negev was used. The total amount of water necessary to add to the system in a year time of operation is large and is a function of both the blow-down rate and the evaporation. First estimations show that the use of a combined system, wet/dry cooling tower, is beneficial in the northern Negev area. Such a system can reduce significantly the amount of wasted fresh water. Lack of international experience is the major problem in the acceptability of wet/dry cooling towers. The technology of a wet cooling tower using sea water is also discussed where no technical or engineering limitations were found. This work is an attempt to give some handy tools for making the choice of cooling systems for nuclear power plants easier
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Jun 1985; 155 p; 30 refs., tables and figures.; Thesis (M. Sc.).
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ASIA, AUXILIARY SYSTEMS, AUXILIARY WATER SYSTEMS, COOLING SYSTEMS, DEVELOPING COUNTRIES, ENRICHED URANIUM REACTORS, HYDROGEN COMPOUNDS, NUCLEAR FACILITIES, OXYGEN COMPOUNDS, POLAR SOLVENTS, POWER PLANTS, POWER REACTORS, REACTORS, SOLVENTS, THERMAL POWER PLANTS, THERMAL REACTORS, WATER, WATER COOLED REACTORS, WATER MODERATED REACTORS
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AbstractAbstract
No abstract available
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2019; 129 p; Available from Vienna University of Technology Library, Resselgasse 4, 1040 Vienna (Austria) and available from https://permalink.obvsg.at/AC15514800; Thesis (Ph.D.)
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Miscellaneous
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AbstractAbstract
[en] The N-Body plasma simulation consists in calculating the Coulomb interaction between N charged particles. We adapted an N-Body 'tree code' algorithm, successfully used in the gravitational case, for the simulation of plasma. So far, we have found two main applications which suits this technique particularly well. First, the expansion of a plasma into vacuum. In this kind of simulations, densities of very different order of magnitude have to interact. Some areas can have an hydrodynamic behavior whereas some others are filled by energetic particles following ballistic trajectories. Problems which take into account plasma-vacuum interface are almost impossible to study with common simulation techniques ( Vlasov, Fokker-Planck). The other application consists in simulating moderately or strongly coupled plasma. It deals with many laboratory plasmas as well as astrophysical plasmas such as the convective zone of the sun. In coupled plasmas, close collisions between charges can not be neglected as it is done in most of the other simulation techniques. The N-Body technique allows the accurate description of the trajectory of each single particle and thus to take into account the strong deviations due to the close collisions. (author)
Original Title
Simulation N-Corps d'un plasma
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Nov 2008; 123 p; This record replaces 41072439; 28 refs.; Full text also available from the INIS Liaison Officer for France, see the 'INIS contacts' section of the INIS-NKM website for current contact and E-mail addresses: http://www.iaea.org//inis/Contacts/index.htm. Also available from Observatoire de Paris. Bibliotheque, 61 avenue de l'Observatoire, 75014 - Paris (France); These physique des plasmas
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AbstractAbstract
[en] Using a three-dimensional global model with a height of 0-80 km, which is based on the primitive equations in flux form, a numeric sensitivity study is carried out in order to determine the role of the troposphere as lower boundary condition in the simulation of stratospheric heat-up. The tropospheric grid surfaces are left out of account in order to achieve a troposphere-less model version which is then used for simulation of stratosphere heat-up at its lower edge near the tropopause. All boundary values are based on geopotential values which were first determined in a model version comprising the troposphere. (orig./KW)
[de]
Mit einem dreidimensionalen, globalen, von 0 bis 80 km Hoehe reichenden Modell, das auf den primitiven Gleichungen in Flussform basiert, wird eine numerische Sensitivitaetsstudie bzgl. der Bedeutung der Troposphaere als untere Randbedingung bei der Simulation von Stratosphaerenerwaermungen durchgefuehrt. Durch Ausblendung der troposphaerischen Gitterflaechen wird eine troposphaerenlose Modellversion erstellt, welche dann zur Simulation von Stratosphaerenerwaermungen am unteren Rand in Tropopausennaehe mit unterschiedlich genauen Vorfahren angeregt wird. Den Randwerten liegen immer Geopotentialwerte zugrunde, die zuvor in einer Simulation mit der die Troposphaere umfassenden Modellversion ermittelt wurden. (orig./KW)Original Title
Die Bedeutung der Troposphaere als untere Randbedingung bei der Simulation von Stratosphaerenerwaermungen
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Meteorologische Abhandlungen. Neue Folge. Serie A. Monographien; v. 7(2); 1993; 147 p; Reimer; Berlin (Germany); ISSN 0342-4324;
; Diss. (Dr.rer.nat.).

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Book
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AbstractAbstract
No abstract available
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13 Jun 1975; 25 p; Symposium on nuclear fuel in Israel; Rehovot, Israel; 1 Jul 1975; 13 tables; paper presented at the Symposium of the Israel Nuclear Society on ''Nuclear fuel in Israel'', Weizmann Institute of Science, Rehovot, 1.7.75.
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AbstractAbstract
[en] The principle of the modular design of the beam lines is presented. Their operation and tuning mode are further explained. The GANIL beam lines, which were designed on this basis about 1975, are quoted as an example
[fr]
Nous presentons le principe de la conception modulaire des lignes de faisceau, dont nous expliquons ensuite le mode d'utilisation et de reglage. Les lignes de faisceau du GANIL, concues dans les annees 1975 sur ce principe, sont citees a titre d'illustrationOriginal Title
Conception modulaire d'une ligne de faisceau et procede de reglage
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1987; 30 p
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AbstractAbstract
No abstract available
Original Title
Nicht-traumatisch bedingter Calcaneusschmerz; Diagnosis of Paget's disease by X-ray radiography
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Published in summary form only.
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AbstractAbstract
[en] By chance, eight X-ray plates dating from 1899 were found in 1986. Each of these glass plates shows the patient's name and the date of the examinations, which were performed in Vienna by Prof. Franz Exner, who was a friend of W.C. Roentgen. The glass plates are 25x13 cm and 10x18 cm in area and 3 mm thick. One side is coated with silver bromide. Probably these are some of the earliest X-ray records in the history of radiology. Their quality is comparable with the quality that can be achieved today, even though the materials and the imaging method used were somewhat unsophisticated. (orig.)
[de]
Durch Zufall wurden im Jahre 1986 auf einem Antiquitaetenmarkt in Freiburg 8 Roentgenbilder auf Glasplatten mit Namensangabe des Patienten und dem Aufnahmejahr aufgefunden. Bei den roentgenologischen Darstellungen handelt es sich um Gelenke der oberen und unteren Extremitaet, wobei die aelteste signierte und datierte Aufnahme aus dem Jahre 1899 stammt. Als Herstellungsort ist Wien angegeben. Auf der signierten Platte aus dem Jahre 1900 fand sich neben den Patientendaten der Name Exner. Prof. Franz Exner war ein Freund W.C. Roentgens und an der Erforschung und klinischen Anwendung der X Strahlen entscheidend beteiligt. Die mit Silberbromid einseitig beschichteten 13x25 cm und 10x18 cm grossen im Durchmesser 3 mm dicken Glasplatten sind sehr fruehe Zeugnisse der Roentgendokumente in der Geschichte der Roentgenstrahlen. Die Qualitaet der Abbildungen ist mit der heutiger Zeit durchaus vergleichbar, wenn auch Material und Methode der Bildgebung mit primitiven Mitteln erreicht wurde. (orig.)Original Title
Zur Fruehgeschichte der Roentgendokumentation
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AbstractAbstract
[en] In dogs and 11 patients a new endoscopic method for arteries has been developed. The approach is transfemoral, and endoscopy is combined with angiography, percutaneous transluminal angioplasty (PTA), and local lysis. An ultrathin endoscope with a diameter of 2.4 mm is used, which also provides a working channel with a diameter of 0.4 mm. Guide wires, contrast media, and drugs for local lysis can be inserted through this channel. Under fluoroscopic control, the endoscope is placed in the region of interest, followed by a special method for decreasing blood flow. Endoscopy is documented by video or by a high-speed camera. No complications have occurred. In all patients, it was possible to demonstrate the results of dilatation, recanalization, or local lysis before and after the interventional procedure. (orig.)
[de]
Im Tierversuch und bei 11 Patienten wurde eine Angioskopiemethode entwickelt, die einen transfemoralen Zugang benoetigt und bisher additiv zur Angiographie und zu verschiedenen Eingriffen wie Dilatation, Rekanalisation und lokaler Lyse durchgefuehrt wurde. Verwendet wurde ein ultraduennes Endoskop mit einem Durchmesser von 2,4 mm, das zusaetzlich neben der Optik mit einem Arbeitskanal von 0,4 mm ausgestattet ist, ueber den sowohl duenne Draehte, Kontrastmittel und Lysematerialien in das Gefaess eingebracht werden koennen. Unter Roentgenkontrolle wird das Angioskop plaziert und nach einem speziell entwickelten Blutleereverfahren sowohl ueber Video als auch mit Schnellschusskamera der angioskopische Befund dokumentiert. Komplikationen traten bisher in keinem Fall auf. Bei allen Patienten konnte das Dilatationsergebnis, die erfolgte Rekanalisation oder der Verlauf einer lokalen Lyse dokumentiert werden. (orig.)Original Title
Perkutane Angioskopie
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AbstractAbstract
No abstract available
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Israel Nuclear Society, Yavne; Israel Health Physics Society; Radiation Research Society of Israel; Transactions; v. 8; 312 p; 1980; p. 84-88; Israel Nuclear Societies joint annual meeting; Beersheba, Israel; 4 - 5 Dec 1980; Published in summary form only.
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