A strain of Tribolium castaneum (Herbst) was developed for resistance against deltamethrin, after six generation of selection from a laboratory susceptible strain, through topical application method. The selection was initiated at the dose 0.0004, which was increased during successive generations’ upto 0.026 in sixth generation. The resistance ratio of selected strain was determined, and it was...

A newly isolated, temperature-sensitive mutant of a haploid strain of Saccharomyces cerevisiae is described. Its shift to nonpermissive temperature (35 C) resulted in an irreversible change to rho(-), causing, within four to six generations, more than 90% of the cells to form petite colonies. Genetic analysis revealed extrakaryotic inheritance of this temperature-sensitive mutation. Data presen...

BACKGROUND Benzo(a)pyrene (BaP) is an endocrine toxicant that is widely distributed in the environment. The adverse effects of BaP on fertility are well documented, however its effects on fertility in the subsequent generations are not known. We aimed to investigate the transgenerational effects of BaP on male fertility in mice. METHODS Six-week-old male mice (F0) were orally administered BaP...

A small but growing body of literature uses overlapping generations (OLG) models to study environmental policy for long-lived problems such as climate change. An OLG model, unlike the infinitely lived representative agent model, distinguishes between impatience with respect to one’s own future utility, and attitudes toward successors’ utility. I discuss the problem of time inconsistency, the ro...

F ROM THE EARLIEST times i t has been believed that living things can originate spontaneously from non-living material. For centuries it was thought, for example, that worms, frogs, insects and scorpions could originate in mud, or from dew or decaying meat, without parents. Known as the doctrine of spontaneous generation, this was the view of the classical Greek authors Aristotle, Lucretius and...

Photosynthesis Research Unit, U.S. Department of Agriculture/Agricultural Research Service, Urbana, Illinois 61801 (E.A.A.); Environmental Sciences Department, Brookhaven National Laboratory, Upton, New York 11973 (A.R.); and Department of Plant Biology (E.A.A., A.D.B.L.), Department of Crop Sciences (E.A.A., A.R.), and Institute for Genomic Biology (E.A.A., A.D.B.L.), University of Illinois at...

When the web becomes more and more whirling with tremendous data, traditional maintenance approaches for web warehouses exhibit poor performance. In this paper, we first demonstrate the requests to webviews has continuity, and then we propose the State Transfer Graph (STG), an adaptive tool for webview maintenance. Using STG, we can produce many concrete maintenance methods, which will effectiv...

A new mechanism is proposed to explain the appearance of the three known fermion generations in a natural way. The underlying idea is based on the discreteness of the spectrum of solutions of the gap equation appearing in models of dynamical chiral symmetry breaking. Within such a framework, the number of parameters needed to describe the experimentally observed fermion spectrum is drastically ...

This paper presents results from a longitudinal study on first-year students’ expectations and actual reported use of information and communication technologies (ICT) at university. The study was interested in firstly, knowing if students from the Net Generation (≤ 25 years) would appropriate more ICT time for both social life and leisure, and study purposes than older students, as this forms t...