The three most extensively cited papers by Zvi Griliches deal with the diffusion of innovations, distributed lags and the sources of the growth of measured total factor productivity, respectively. The close economic connections between these dynamic phenomena remained largely unexplored and were at best only implicit in his published writings until late in his career. Yet, from his later reflec...

A protocol solving the k-set consensus problem [13] has to provide three properties: k-agreement non-faulty processes has to decide on at most k values, validity every decision value must be an input value of some process, and termination each non-faulty process must stop with a decision value after some nite number of steps. It has been proved [8] that this problem can be solved using only rea...

I n this issue of the The Journal of Experimental Medicine, Boucher et al. (1) report on the role of the sphingomyelin pathway in CD28 signaling of NF-KB activation and mitogenesis in human Jurkat T ceils and in primary cultures of mouse splenic T cells. In contrast, two recent articles (2, 3) have reported that ceramide, the second messenger of the sphingomyelin pathway, triggers programmed ce...

S. Ponmani and C. Udayasoorian Abstract -A new class of nano scale zero valent iron (nZVI) particles supported on activated carbon (AC) were synthesized and the feasibility of using nanocomposite (AC+nZVI) for the removal of Cr(VI) in water was investigated through laboratory batch test. Nanocomposite was synthesized by impregnating carbon with ferrous sulfate followed by chemical reduction wit...