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[en] In most laboratory studies with oral exposure of terrestrial invertebrates to metals an artificial food, which is easy to handle, is used. The bioavailability of metals from this artificial food may, however, be much higher than from more field relevant food sources. Such differences may affect toxicokinetic processes in different tissues. To test the effect of bioavailability of Cd in food on Cd toxicokinetics and internal distribution in terrestrial invertebrates, we performed the experiment using the ground beetle Pterostichus oblongopunctatus exposed to Cd via food differing in their soluble Cd pool. We showed that in carabids Cd accumulation and elimination pattern in different tissues is not governed by the metal availability in food.
[en] The BT-S4 unit consists of a support suspended from the ceiling on which the X-radiator is fixed, a Bucky table with floating plate, and an integrated device for tomographic movements in two dimensions. The blowing device is driven by two motors in the suspended support. Coupling between focus and detector path is assured by a rod, which can be decoupled, the fulcrum being stationary. The layer is selected by adjusting the distance from table to detector. Both for radiographic and tomographic purposes the device can be furnished with a system function, jointly with the generator, for automatic exposure. (orig./HP)
[de]Das BT-S4 besteht aus einem Deckenstativ fuer den Roentgenstrahler, einem Bucky-Tisch mit schwimmender Tischplatte und einer integrierten Einrichtung fuer Tomographiebewegungen in zwei Dimensionen. Der Antrieb der Verwischungseinrichtung erfolgt durch zwei Motore im Deckenstativ. Die Koppelung zwischen Fokus- und Detektorweg geschieht ueber eine abkoppelbare Stange bei ortsfestem Fulkrum. Durch Hoehenverstellung der Kombination Tischplatte/Detektor erfolgt die Schichtwahl. Als Systemfunktion gemeinsam mit dem Generator wird eine Expositionsautomatik sowohl fuer Radiographie als auch fuer Tomographie geboten. (orig./HP)
[en] This publications catalogue lists all sales publications of the IAEA published in 2013 and 2014 and those forthcoming in 2014-2015. Most IAEA publications are issued in English; some are also available in Arabic, Chinese, French, Russian or Spanish. This is indicated at the bottom of the book entry. A complete listing of all IAEA priced publications is available on the IAEA's web site: http://www.iaea.org/books
[en] Highlights: • In this article we propose a method of phase definitions of the various forms of 3H in the soil. • Detailed consideration of the alleged speciation of 3H in the soil. • We investigated the distribution of speciation of 3H and in the soils of radiation-dangerous objects. • Revealed that the distribution of speciation form of 3H associated with the mechanism of formation of 3H in the study object. - Abstract: Speciation of tritium (3H) in soils from the “Balapan” site in Semipalatinsk are presented in this study. Three interrelated objects were chosen for further study: “Atomic” lake, the Shagan River and an external reservoir. The main speciation forms of 3H in soil were: 3H in surface-adsorbed water, 3H in interlayer water, hydroxylic 3H, organically bound 3H and crystalline-bound 3H. Results will allow an estimation of contamination mechanism to be made, and will also allow the potential for migration and bioavailability of 3Hto be assessed.
[en] Highlights: • Responses of upstream stock returns to world non-US oil supply shock increase over time. • Responses of upstream stock returns to US oil supply shock are positive and persistent. • Effects of oil supply shocks are asymmetric for independents and integrated firms. • A structural change in the causal relationship between oil market and stock return - Abstract: A time-varying parameter VAR model is used to examine the impact of structural oil supply shocks on the US real stock market return of oil and gas exploration and production companies. The result shows that the impact response of the real return of the upstream stocks to a negative world non-US oil supply shock increases substantially over recent years, from an average value of 0.70% in 2006 to 6.16% during 2008–2010, with a spike of 6.81% in 2014Q3. The endogenous effects of US oil supply shocks on the return play an important role, in that the responses of the stock returns to a negative US oil supply shock are positive and persistent with an average value of 3.60% over time. The time-varying effects of oil supply shocks are heterogeneous. The magnitudes of return responses are different among independents, large proved-reserve independents and integrated companies over time.
[en] Allocation of inspection resources for international safeguards is considered as the problem of designing a complex system that is composed of individual inspection activities and that has the objective of detecting material loss. Optimization theory is applied in selecting those inspection activities that maximize a system performance measure within resource constraints. The method is applicable to a global allocation problem in which inspection resources are distributed throughout a hierarchy consisting of multiple countries, multiple facilities within each country, and multiple activities within each facility. 9 references
[en] Together with wave energy, ocean thermal energy, and the often overlooked energy from ocean curents tidal energy belongs to those renewable energy sources that can be subsumed under the generic term of ocean energy. All that these energy sources have in common, however, is that they are found in the ocean. The present article discusses tidal energy with respect to the four principal factors determining the scope of a renewable energy source, namely global, technical, and economic availability and ecological acceptability. (orig.)
[de]Die Gezeitenenergie gehoert zusammen mit der Wellenenergie, der Meereswaerme und den oftmals nicht erwaehnten Meeresstroemungen zu den erneuerbaren bzw. regenerativen Energien, die unter den Oberbegriff Meeresenergie subsumiert werden koennen, denen jedoch faktisch 'nur gemeinsam ist, dass sie im Meer auftreten'. Nachfolgend wird die Gezeitenenergie anhand der vier fuer die Nutzungsmoeglichkeiten von regenerativen Energien massgeblichen Determinanten der Verfuegbarkeit bzw. Vertraeglichkeit von Energietraegern, d.h. der Determinanten globale, technische, oekonomische Verfuegbarkeit und oekologische Vertraeglichkeit vorgestellt. (orig.)
[en] Due to anthropogenic activities, large extends of soils are highly contaminated by Metal Trace Element (MTE). Aided phytostabilisation aims to establish a vegetation cover in order to promote in situ immobilisation of trace elements by combining the use of metal-tolerant plants and inexpensive mineral or organic soil amendments. Eight years after Coal Fly Ash (CFA) soil amendment, MTE bioavailability and uptake by two plants, Lolium perenne and Trifolium repens, were evaluated, as some biological markers reflecting physiological stress. Results showed that the two plant species under study were suitable to reduce the mobility and the availability of these elements. Moreover, the plant growth was better on CFA amended MTE-contaminated soils, and the plant sensitivity to MTE-induced physiological stress, as studied through photosynthetic pigment contents and oxidative damage was lower or similar. In conclusion, these results supported the usefulness of aided phytostabilisation of MTE-highly contaminated soils. - Highlights: → Aided phytostabilisation aims to establish a vegetation cover in order to promote immobilisation of MTE. → 8 years after the soil amendments, a pot culture study was carried out in greenhouse conditions. → MTE bioavailability and uptake by the two plants was drastically decreased with amendments. → Our results support the usefulness of aided phytostabilisation of MTE-highly contaminated soils. → CFA addition contributed to the reduction of the MTE mobility and availability for the plants. - Efficiency of Coal Fly Ash amendment for phytostabilisation of Pb, Cd and Zn in MTE-highly contaminated soils.