A Portland cement plaster wall system has many positive features, but one of the physical properties that it does not possess is flexural strength. It is because of the inability of the Portland cement plaster membrane to bend or flex that glass fiber strands were used in Portland cementbased plaster. There are various types of synthetic fibers on the market that will provide flexural strength ...

©2003 EUROPEAN MOLECULAR BIOLOGY ORGANIZATION EMBO reports VOL 4 | special issue | 2003 S61 Public health in reverse; this term has been applied to the deliberate use of microorganisms to cause and spread disease (Harris & Paxman, 1982, p. xii). Biological warfare is not only a perversion of science; it goes against the very heart of human efforts to reduce and eliminate infectious disease as a...

A complete and detailed analysis of the microstructural development during ageing in an 8090 (Al-2.3Li-1.2Cu-1Mg-0.1Zr) alloy, an 8090/20wt%SiCp MMC, an Al-1.5Li-Cu-Mg MMC and an Al-Cu-Mg MMC (all with similar Cu and Mg contents) has been performed. Volume fractions of all precipitates relevant for precipitation strengthening of the alloys (δ' phase, S' phase and GPB zones) have been determined...

Gintis (2000) presents a model of the evolutionary emergence of strong reciprocity that may in part explain a high level of sociality in human groups despite a low level of relatedness among members. A strong reciprocator is predisposed to cooperate with others and punish defectors at a cost to himself. Gintis (2000) argues that those groups that have strong reciprocators as members might have ...

Access control encryption (ACE) was proposed by Damgård et al. to enable the control of information flow between several parties according to a given policy specifying which parties are, or are not, allowed to communicate. By involving a special party, called the sanitizer, policy-compliant communication is enabled while policy-violating communication is prevented, even if sender and receiver a...

In this talk, we will discuss some questions related to polynomial approximations of AC0. A classic result due to Tarui (1991) and Beigel, Reingold, and Spielman (1991), states that any AC0 circuit of size s and depth d has an -error probabilistic polynomial over the reals of degree at most (log(s/))ˆ{O(d)}. We will have a re-look at this construction and show how to improve the bound to (log s...

The discovery that RNA interference (RNAi) and its functional derivatives, small interfering RNAs (SiRNAs) and micro-RNAs (MiRNAs) could mediate potent and specific gene silencing has raised high hopes for cancer therapeutics. The prevalence of these small (18-25 nucleotide) non-coding rnas in human gene networks, coupled with their unique specificity, has paved the way for the development of n...

As opiate processing and distribution networks in East Asia source more of their supplies from Afghanistan they will need to re-organise their supply routes. The likely result will be a growing interdependence of the heroin trades in East Asia and Europe, which most analysts have hitherto seen as independent. 59 59 For example, in discussing price movements resulting from the Taliban's ban on o...

OBJECTIVE To detail the presentation of two elite female soccer players with right thigh pain that occurred during training. This article will outline the investigation, diagnosis and management of their cases. CLINICAL FEATURES The patients presented with anterior thigh pain following injuries incurred during training camp. Both were diagnosed with acute muscular strain and associated muscul...

Background: The aim of this study was evaluation of developmental rate and Bax, Bcl-2 and ErbB4 genes expression following re-vitrification in compact and early blastocysts stages. Materials and Methods: 5-8 cell embryos were collected from female mature mice, 60-62 hours post hCG injection. The embryos were divided to five groups including: fresh, vitrified at 5-8 cells, vitrified at blastocys...