Men throughout recorded history have sought to preserve and enhance their virility, and have approached this in several creative ways. In antiquity, the testes were thought to be the seat of both vigor and longevity for men. Greek and Roman men consumed a substance called “satyricon,” a combination of goat and wolf testicular extracts. In the 19th and 20th centuries, there was an emergence of t...

When professional mathematicians and scientists discuss the nature and origins of their own creativity, they often mention the central role played by visual and spatial thinking. Many of these professionals allude to the importance of visual cognition in the practice of mathematics and science; or they recall early formative experiences with spatially-rich activities such as geometric construct...

Recent data allow the assertion that conformational changes in F-actin regulate actin-myosin interaction in muscle fibre (Adelstein and Eisenberg 1980; Lednev 1980; Yanagida and Oosawa 1980; Borovikov et al. 1982; Borovikov and Gusev 1983 ; Borovikov and Karandashov 1983). However, the exact mechanism of such regulation cannot be established without further experimental evidence. The study of c...

A resource exchange network is considered, where exchanges among nodes are based on reciprocity. Peers receive from the network an amount of resources commensurate with their contribution. We assume the network is fully connected, and impose sparsity constraints on peer interactions. Finding the sparsest exchanges that achieve a desired level of reciprocity is in general NP-hard. To capture nea...

European Bioinformatics Institute, Wellcome Trust Genome Campus, Cambridge CB10 1SD, UK e-mail: [email protected] Introduction In what follows, we give an overview of the eight reviews in the Sequences and topology section, describing and summarizing their content. Basically, the reviews this year follow the overall progression in bioinformatics from genome sequence to functional genomics anal...

on the soluble peptide from B. 8ubtili8 by Bovarnick (1942), the B. anthraci8 capsule by Hanby & Rydon (1946) and the soluble peptide from B. meoentericus by Pongor (1950) has shown that, to the extent of at least 99 %, glutamic acid is the only nitrogen-containing substance in the peptide hydrolysates. The optical configuration of the glutamic acid appears to vary from one preparation to anoth...