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Abstract  

Three commercial nuclear fuel cycle facilities, a reprocessing plant, an uranium enrichment plant and a low level radioactive waste disposal center, have been constructed or are in partial operation at Rokkasho-mura in Aomori prefecture, about 700 km north of Tokyo. A monitoring program has been settled on the modulation between Japan Nuclear Fuel Ltd. (JNFL) and Aomori Prefectural Govemment. The basic goal of environmental monitoring is to make sure that the dose equivalent received by the public, living around the facilities, is much lower than the annual dose equivalent limit. The target is as follows: (1) to estimate the dose equivalent received by the public, (2) to understand the accumulation of radioactive materials in the environment and (3) to estimate the influence on the environment due to unexpected release from the nuclear facilities and to make judgement for the enforcement of routine monitoring or not. This paper describes the contents of the monitoring program such as the object of nuclides, measuring/sampling point, kinds of samples etc.

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Abstract  

Evergreen oak was chosen as a possible biological monitor of environmental pollution. It was shown that there is a direct relationship between the concentration of elements in leaves and the presence of pollution sources, i.e. the density of vehicular traffic.

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Abstract  

The present paper confirms that evergreen oak leaves (Ouercus ilex) are a reliable biological monitor for pollution originating from vehicular traffic. By treating of experimental data statistically a simple model was obtained which explains pollution levels in terms of vehicular density and particulate resuspension effects. An extensive list of current literature in this field is also included.

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Az akut coronariaintervenció korában a myocardialis infarctust elszenvedő beteg nagyon gyorsan, néhány nap után haza vagy rehabilitációra kerül. A betegeknek a halálozása ugyanakkor az infarktust követő első hónapban a legmagasabb. Az elsősorban veszélyeztetettek a jelentős szívizomvesztést elszenvedő, csökkent szisztolés bal kamrai funkciójú betegek. Fontos lehet ezért ezen betegeknél – a telemedicina fejlődésével lehetőséget teremtő – új módszerek kidolgozása a ritmuszavarok otthoni monitorozására. Célkitűzés: Annak vizsgálata, hogy internetalapú folyamatos otthoni aritmiamonitorozás milyen biztonságossággal alkalmazható akut myocardialis infarctust elszenvedő, coronariaintervención átesett, csökkent balkamra-funkciójú betegeknél a hazabocsátás utáni első hónapban. Módszer: Számos transztelefonos EKG-monitor-rendszer működik, de a szerzők egy olyan új technológiával szerzett tapasztalataikat ismertetik, ahol a beteg aktivációjától független, folyamatos EKG-észlelés zajlik interneten keresztül. Az internettel nem rendelkező betegeknél kifejlesztésre került egy mobil internetre csatlakozó vevőegység is. Eredmények: Tíz, infarktus után otthonába távozó, 40% alatti ejekciós frakcióval rendelkező betegnél végeztünk monitorozást. A mérések kumulatív ideje összesen 170 nap volt. A teljesen zajmentes időszak 98% volt, hibamentes EKG 99% volt. Hatvanhat összes alarm átlagos nyugtázási ideje 27 szekundum volt. Az alarm/nap 0,39-nak adódott, és a riasztások pozitív prediktivitása 0,106 volt. Az összes alarmidő 29,8 percnek adódott, ami napi bontásban 10,5 szekundumot jelentett. Következtetések: Módszerünk alkalmasnak látszik a kórházból hazakerült betegek otthoni monitorozására úgy, hogy viszonylag nagy százalékban lehet hibamentes EKG-t regisztrálni a kifejlesztett mellpánt segítségével. Az alacsony riasztási idő azt jelenti, hogy sok beteg egyszerre történő monitorozása is kellő biztonsággal megoldható. A fenti módszert és eredményeinket azért tartjuk fontosnak bemutatni, mert ilyen „szoros” otthoni monitorozásról sem publikációt, sem terméket, illetve szolgáltatást nem találtunk.

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Abstract  

A method is proposed which, through the monitoring and modeling of the diurnal variation of α-radioactivity in the air near the ground, appears with a potential in enhancing the measurement of low radioactivity unexpected peaks over the natural background. Portable field instrumentation was used for the monitoring which further included the total γ-radiation at ground level, the relative humidity and temperature. The variation of the α-radioactivity follows a periodic form with peaks in the morning and in the afternoon. The applicability of a mathematical model to describe this variation of the α-radioactivity in terms of the meteorological variables and the γ-radiation was tested positive. This could reduce the difference between the measured and modeled periodic variation to an almost flat one, above which sudden unexpected peaks of radioactivity from possible undeclared nuclear activities could be easier identified.

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Abstract  

Chlorine-36 (half life 3.01 × 105 year), a beta emitter, is produced naturally but its presence has been enhanced by atmospheric weapons testing and other nuclear activities. Iodine-129 has a half life of 1.57 × 107 years and is also produced by nuclear activities, in particular fuel reprocessing. Many elements have a long biological half-life in lichens, which were thus investigated so as to assess their suitability for 36Cl and 129I monitoring. Lichens sampled between 1998 and 2008 were analysed for total chlorine, and selected samples were processed for 36Cl measurement using Accelerator Mass Spectrometry (AMS); 129I was analyzed by gamma spectrometry. Different aspects are discussed: long-term storage in lichens versus environmental mobility, levels in samples collected near a reprocessing facility, and potential for spatial and temporal monitoring.

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Acta Chromatographica
Authors: É. Szőke, G. Petroianu, K. Tekes, B. Benkő, P. Szegi, R. Laufer, and G. Veress

Summary

Reversed-phase HPLC has been used to monitor the concentration of the two major Chamomile components rutin and quercetin during rat liver microsomal treatment. The possibility of microsomal oxidative metabolism or stability of these two components was examined using a guard-column without any clean-up. The concentration of quercetin decreased when exposed to rat liver microsomal media whereas the rutin concentration did not change significantly over one hour of treatment.

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The intensity of neutron beams is measured by neutron beam monitor detector at research reactors, in order to allow normalization of neutron scattering data. A two dimensional position sensitive neutron beam monitor has been developed, able to measure the distribution of beam intensity in its cross-section. The neutron adsorption efficiency of these monitor detectors are low enough to minimize the intensity loss, but high enough to provide low statistical error. Since the number of detected events is not too high, the dead time is not crucial for these detectors. A novel readout method has been developed that slightly increases the dead time but eventuates a robust, simple and flexible system. This new method relies on the serial connection of the delay-lines, minimizing the number of analogue signals. Two or three analogue signal outputs are enough to reconstruct the two-dimensional intensity matrix. Combining this new method with a comprehensive acquisition on the primary signals, the quality parameters of the detectors are also improved. Design and measurement results at the Budapest Research Reactor are presented.

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Acta Veterinaria Hungarica
Authors: Marilena Bazzano, Elisabetta Giudice, Maria Rizzo, Fulvio Congiu, Alessandro Zumbo, Francesca Arfuso, Simona Di Pietro, Daniele Bruschetta, and Giuseppe Piccione

. Kingston , J. K. , Soppet , G. M. , Rogers , C. W. and Firth , E. C. ( 2006 ): Use of a global positioning and heart rate monitoring system to assess training load in a group of thoroughbred racehorses . Equine Vet. J. Suppl. 35 , 106 – 109

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Abstract  

In-vivo neutron activation analysis (IVNAA) is now routinely used for the diagnosis and therapeutic monitoring of many diseases e.g. those of the skeletal system and those involving nutrition. Total body calcium (TBCa) and total body nitrogen(TBN) measurement are two such procedures. IVNAA facilities are designed for patient comfort and ease of operation in a hospital setting. They use portable isotopic neutron sources and conventional electronics. They are effective, non-invasive and, often, revenue generating in health care settings. They are now becoming common in health care facilities.

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