Reinhard Posch

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The effect of phenobarbital on thyroid function and the metabolism and biliary excretion of thyroxine in rats was determined. Phenobarbital, administered for 2 weeks at a dose of 100 mg/kg/day, resulted in an increase in hepatic and thyroid gland weights, decreased circulating levels of T4, T3 and rT3, and increased TSH levels in male and female rats. After(More)
When admitting electronic media as a means for citizens to approach public authorities – i.e., when advancing official proceedings towards e-Government – security is an indispensable precondition for concerns of legal certainty and for achieving acceptance by the citizens. While the security-enabling technologies such as smartcards, digital signatures, and(More)
A study was conducted to determine the mode of action for phenobarbital promotion of thyroid follicular cell neoplasia in rats using an initiation-promotion model established by Hiasa et al. (Y. Hiasa, Y. Kitahori, M. Ohshima, T. Fujita, T. Yuasa, N. Konishi, and A. Miyashiro, 1982a, Carcinogenesis 3, 1187-1190). Seven groups of Charles River Crl: CD(SD)BR(More)
With the unprecedented growth of the Internet, business -to-consumer (B2C) commerce has grown to vast proportions. However, after years of practice, how to promote consumers’ trust towards their storefronts is still the most critical challenge for B2C online merchants (Hoffman and Novak 1996, Jarvenpaa et al. 2000, Kovar et al. 2000). Presently, the main(More)
Base extension is an important operation in residue number systems. The method for base extension proposed in this paper approaches the solution through an approximation which is correct in nearly all cases. Rare corrences of uncertainties about the correctness of the result are detected and corrected using iterations. The novel method is superior to the(More)
In recent years, there has been increasing interest in interconnecting satellite and ATM networks because both share common characteristics of the ability to provide bandwidth-on-demand and flexibility of integrating voice, video and data services. There are several new satellite constellation proposals that support multimedia service and transport ATM(More)