colour perception under low-pressure sodium lighting

. This note considers the application of electronic cash to transactions in which many small amounts must be paid to the same payee and in which it is not possible to just pay the total amount afterwards. The most notable example of such a transaction is payment for phone calls. If currently

Actinomycin D blocks DNA-dependent RNA synthesis by binding to DNA (Reich et al., reference 15). On a cellular level, several radioautographic studies have demonstrated the in vivo binding

Viable models of traversable wormholes

that by adjusting the metric coefficients, some of these problems can be corrected. By doing so, the basic idea can be retained: wormholes containing only small amounts of exotic matter can still be traversable. PAC number(s): 04.20.Jb, 04.20.Gz In a recent paper Fewster and Roman [1] discuss wormholes models

Small amounts of m-dinitrobenzene in nitrobenzene can be concentrated by chromatographic adsorption on alumina and elution with a mixture of benzene and light petroleum. The adsorbed wz-dinitrobenzene is extracted with ethanol from the dried extruded alumina column and determined polarographically

A rapid spectrophotometric method for the determination of small amounts of triisooctylamine in aqueous solution is described. The method is based on the formation of a complex between the amine and cobalt thio-cyanate; the complex is developed in dilute sulphuric acid and is extracted with carbon

with distinct security requirements. We propose a solution to one, the managed-open scenario where no network infrastructure is pre-deployed, but a small amount of prior security coordination is expected. Our protocol, ARAN, is based on certificates and successfully defeats all identified attacks.

of finite games, such as Selten’s finitely repeated chain-store game or in the finitely repeated prisoners ’ dilemma. We reexamine Selten’s model, adding to it a “small ” amount of imperfect (or incomplete) information about players ’ payoffs, and we find that this addition is sufficient to give rise

for manipulation is milmimized, and sources of erroi ’ eimcountered in wash-ilmg by centrifugation are avoided. In applications of time oxalate method to small amounts of calcium, the limits of accuracy have beeim due chiefly, not so much to the pro-cedures used for measuring the precipitate, as to those used