[en] Groundwater from four boreholes in granitic rock at an investigation site in Kamlunge has been sampled and analysed. This is part of a larger program of geological, geophysical and hydrogeological investigations aimed at finding a suitable site for a high level radioactive waste repository. One to four water-bearing levels in each borehole between a depth of 100 and 600 m were selected. Prior to sampling, the water-bearing level is isolated between packer sleeves. The water is then pumped to the surface where sensitive parameters such as redox potential, pH, sulphide and oxygen content are measured electrochemically on the flowing water in a system isolated from the air. Water, filter and gas samples are sent to several laboratories for further analysis. The present report is a presentation of the results of the groundwater analyses. The reliability of the results is discussed but there is no evaluation in relation to geology and hydrogeology. This report presents the basic results from the groundwater analyses to be further evaluated by experts in different fields. (author)

[en] Groundwater from three boreholes at an investigation site in Fjaellveden has been sampled and analyzed. This is part of a larger programme of geological, geophysical and hydrogeological investigations aimed at finding a suitable site for a high level radioactive waste repository. Four water-bearing levels in each of the boreholes FJ2 and FJ4, and two levels in borehole FJ8, have been sampled. The sampling depths range from 106 down to 562 m. Prior to sampling, the water-bearing section is isolated between packer sleeves. The water is then pumped to the surface where sensitive parameters such as redox potential, pH, sulphide and oxygen content are measured electrochemically on the flowing water in a system isolated from the air. Water, filter and gas samples are sent to several laboratories for further analysis. The present report is a presentation of the results of the ground-water analyses. The reliability of the results is discussed but there is no evaluation in relation to geology and hydrogeology. This report presents the basic results from the groundwater analyses to be further evaluated by experts in different fields. (author)

[en] Groundwater from three boreholes in granitic rock at an investigation site in Klipperaas has been sampled and analysed. Water-bearing levels in the boreholes down to the deepest at 777 m were selected. Sensitive parameters such as redox potential, pH, sulphide and oxygen content are measured electrochemically on the flowing water in a system isolated from the air. Water, filter and gas samples are sent to several laboratories for further analysis. The present report is a presentation of the results of the ground-water analyses. The reliability of the results is discussed but there is no evaluation in relation to geology and hydrogeology. This report presents the basic results from the groundwater analyses to be further evaluated by experts in different fields. (orig./PW)

[en] CGP 28392 is a recently described dihydropyridine derivative with positive inotropic properties. To study the mechanism of action of this putative calcium channel agonist, we have related the effects of CGP 28392 on contraction (measured with an optical video system) and radioactive calcium uptake to ligand-binding studies in cultured, spontaneously beating chick embryo ventricular cells. CGP 28392 produced a concentration-dependent increase in amplitude and velocity of contraction (EC₅₀ = 2 x 10(-7) M; maximum contractile effect = 85% of the calcium 3.6 mM response). Nifedipine produced a shift to the right of the concentration-effect curve for CGP 28392 without decreasing the maximum contractile response, suggesting competitive antagonism (pA2 = 8.3). Computer analysis of displacement of [³H]nitrendipine binding to intact heart cells by unlabeled CGP 28392 indicated a K /sub D/ = 2.2 +/- 0.95 x 10(-7) M, in good agreement with the EC₅₀ for the inotropic effect. CGP 28392 increased the rate of radioactive calcium influx (+39% at 10 seconds) without altering beating rate, while nifedipine decreased radioactive calcium influx and antagonized the CGP 28392-induced increase in calcium influx. Our results indicate that, in intact cultured myocytes, CGP 28392 acts as a calcium channel agonist and competes for the dihydropyridine-binding site of the slow calcium channel. In contrast to calcium channel blockers, CGP 28392 increases calcium influx and enhances the contractile state

[en] Groundwater from two boreholes in granitic rock at an investigation site in Svartboberget has been sampled and analysed. This is part of a larger program of geological, geophysical and hydrogeological investigations aimed at finding a suitable site for a high level radioactive waste repository. Four water-bearing levels in each borehole down to the deepest at about 600m were selected. Prior to sampling, the water-bearing level is isolated between packer sleeves. The water is then pumped to the surface where sensitive parameters such as redox potential, pH, sulphide and oxygen content are measured electrochemically on the flowing water in a system isolated from the air. Water, filter and gas samples are sent to several laboratories for further analysis. The present report is a presentation of the results of the groundwater analyses. The reliability of the results is discussed but there is no evaluation in relation to geology and hydrogeology. This report presents the basic results from the groundeater analyses to be further evaluated by experts in different fields. (author)

[en] Groundwater from deep boreholes in granitic rock at three different sites in Sweden - Finnsjoen, Kraakemaala and Sternoe - has been sampled and analysed. A total of ten different boreholes have been sampled; one at Kraakemaala, two at Sternoe and seven at Finnsjoen. In general four levels per hole containing waterbearing fractures have been selected. Prior to sampling, a water-bearing level is isolated between packer sleeves. The deepest levels are down to about 500 m. The sampling was carried out by the Geological Survey of Sweden and a number of laboratories have participated in the water analyses. The present report is a presentation of the results of the groundwater analyses. The reliability of the results is discussesd but there is no evaluation in relation to geology and hydrogeology. This report will present the basic results from the groundwater analyses to be further evaluated by experts in different fields. (author)

[en] Groundwaters from two boreholes in granitic rock at an ivestigation site in Gideaa has been sampled and analysed. This is part of a larger program of geological, geophysical and hydrogeological investigations aimed at finding a suitable site for a high level radioactive waste respository. Five water-bearing levels in each borehole down to the deepest at about 500 m in the first and about 600 m in the second borehole were selected. Prior to sampling, the waterbearing level is isolated between packer sleeves. The water is then pumped to the surface where sensitive parameters such as redox potential, pH, sulphide and oxygen content are measured electrochemically on the flowing water in a system isolated from the air. Water, filter and gas samples are sent to several laboratories for further analysis. The present report is a presentation of the groundwater analysis. The reliability of the results is discussed but there is no evaluation relation to geology and hydrogeology. This report presents the basic results from the groundwater analyses to be further evaluated by experts in different fields. (Forf)

[en] Groundwater chemical investigations are one of the research areas in SKBs research and development program for the final disposal of spent nuclear fuel. Since 1985 a specially designed integrated system consisting of a mobile field laboratory and a down-hole measuring probe is used for the chemical characterization of deep groundwater. The groundwater chemical analyses are performed in the field laboratory and E_h and pH are measured in situ by the down-hole probe. The chemical data obtained from the specific site investigations are stored in the GEOTAB database on the VAX computer at SKB. The description of chemical data handling given in this paper concerns the period after 1985. (au)

[en] The aim of this work is the development of a new and quick method for the quality control of magnetic fluids. The method is based on the analysis of proton nuclear magnetic relaxation dispersion curves which give the evolution of the relaxation rate of the solvent protons as a function of the magnetic field. These profiles provide physical information about the magnetic nanocrystals namely the average radius r and the specific magnetization M_s. This technique has been used to establish the conditions for reproducible and size controlled synthesis of dextran coated superparamagnetic nanomagnets

[en] The French nuclear safety authority (ASN) is commissioned to control nuclear safety in order to protect workers, the public and the environment from the risks implied by nuclear activities. This control consists in the verification that the plant operator complies to all his obligations concerning nuclear safety, this checking relies on on-site inspections, on the analysis of documents and information provided by the plant operator to justify his actions. This article presents how ASN carries out its control mission by reporting a series of interviews with inspectors from ASN. A British inspector and a Spanish inspector give their feeling about the French way of inspecting. (A.C.)