A radium assay technique using hydrous titanium oxide adsorbent for the Sudbury Neutrino Observatory

As photodisintegration of deuterons mimics the disintegration of deuterons by neutrinos, the accurate measurement of the radioactivity from thorium and uranium decay chains in the heavy water in the Sudbury Neutrino Observatory (SNO) is essential for the determination of the total solar neutrino flux. A radium assay technique of the required sensitivity is described that uses hydrous titanium oxide adsorbent on a filtration membrane together with a beta-alpha delayed coincidence counting system. For a 200 tonne assay the detection limit for 232Th is a concentration of 3 x 10^(-16) g Th/g water and for 238U of 3 x 10^(-16) g U/g water. Results of assays of both the heavy and light water carried out during the first two years of data collection of SNO are presented.Comment: 12 pages, 4 figure

Hsp70 in mitochondrial biogenesis

The family of hsp70 (70 kilodalton heat shock protein) molecular chaperones plays an essential and diverse role in cellular physiology, Hsp70 proteins appear to elicit their effects by interacting with polypeptides that present domains which exhibit non-native conformations at distinct stages during their life in the cell. In this paper we review work pertaining to the functions of hsp70 proteins in chaperoning mitochondrial protein biogenesis. Hsp70 proteins function in protein synthesis, protein translocation across mitochondrial membranes, protein folding and finally the delivery of misfolded proteins to proteolytic enzymes in the mitochondrial matrix

The solution to the Tullock rent-seeking game when R > 2: mixed-strategy equilibria and mean dissipation rates

In Tullock's rent-seeking model, the probability a player wins the game depends on expenditures raised to the power R. We show that a symmetric mixed-strategy Nash equilibrium exists when R>2, and that overdissipation of rents does not arise in any Nash equilibrium. We derive a tight lower bound on the level of rent dissipation that arises in a symmetric equilibrium when the strategy space is discrete, and show that full rent dissipation occurs when the strategy space is continuous. Our results are shown to be consistent with recent experimental evidence on the dissipation of rents. An earlier version of this paper circulated under the title, No, Virginia, There is No Overdissipation of Rents. We are grateful to Dave Furth and Frans van Winden for stimulating conversations, and for comments provided by workshop participants from the CORE-ULB-KUL IUAP project, Purdue University, Pennsylvania State University, Rijksuniversiteit Limburg, and Washington State University. We also thank Max van de Sande Bakhuyzen and Ben Heijdra for useful discussions, and Geert Gielens for computational assistance. An earlier version of the paper was presented at the ESEM 1992 in Brussels and the Mid-West Mathematical Economics Conference in Pittsburgh. All three authors would like to thank CentER for its hospitality during the formative stages of the paper. The second author has also benefited from the financial support of the Katholieke Universitieit Leuven and the Jay N. Ross Young Faculty Scholar Award at Purdue University. The third author benefitted from visiting IGIER where part of the paper was written. The third author also benefitted from grant IUAP 26 of the Belgian Government

The Sudbury Neutrino Observatory

The Sudbury Neutrino Observatory is a second generation water Cherenkov detector designed to determine whether the currently observed solar neutrino deficit is a result of neutrino oscillations. The detector is unique in its use of D2O as a detection medium, permitting it to make a solar model-independent test of the neutrino oscillation hypothesis by comparison of the charged- and neutral-current interaction rates. In this paper the physical properties, construction, and preliminary operation of the Sudbury Neutrino Observatory are described. Data and predicted operating parameters are provided whenever possible.Comment: 58 pages, 12 figures, submitted to Nucl. Inst. Meth. Uses elsart and epsf style files. For additional information about SNO see http://www.sno.phy.queensu.ca . This version has some new reference

Prepayments and insolvency

SIGLEAvailable from British Library Lending Division - LD:GPB-4209 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Inflation versus unemployment Is the Government impotent

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Regret theory In memoriam tristem

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The transfer of organisational practices: a diachronic perspective

Extensive research has been undertaken on the transfer of organizational practices by multinational firms (e.g. Morgan, Kristensen and Whitley 2001; Ferner, Quintanilla, and Sánchez-Runde 2006). However, little investigation has assessed the role that time plays in this process. The commonplace theoretical assumption is that as their overseas subsidiaries become more embedded in the local environment they increasingly take on the practices that prevail locally (Rosenzweig and Nohria 1994; Farley, Hoenig and Yang 2004). There have, though, been few longitudinal studies that would allow the veracity of this assumption or its implications to be assessed; most studies provide one-off, synchronic ‘snapshots’ of organizations. Drawing upon research conducted at a UK-owned retail firm in China between 1999 and 2005, this paper provides a diachronic perspective that can trace emergent trends. Data are derived from mixed methods: 140 interviews with expatriate managers and local staff from all levels of the hierarchy, a three month period of ethnographic research and a total of 305 survey questionnaires. Comparison between findings from the more recent research and those based upon the earlier research suggests that time does play a role in affecting transplanted organizational practices. We report that in some respects the organizational practices of the firm in question increasingly took on more of the ‘colour’ of those that prevailed in the host environment. However, convergence with local practices was far from total, some practices bear increasing resemblance to the firm's parent country operation. We also caution that it is difficult to disentangle the isomorphic influence of the passage of time from factors such as the rapid withdrawal of expatriate managers from the operational level and the impact of the firm's rapid expansion across China. Moreover, we suggest that the local–global dichotomy, upon which much of the convergence–divergence debate rests, is perhaps increasingly problematic