The ribosome: some hard facts about its structure and hot air about its evolution.

Ramakrishnan about Its Evolution The Ribosome : Some Hard Facts about Its Structure and Hot Air

The Web Graph: an Overview

We propose here an overview of the questions which arise about the Web graph, the methods used to (try to) answer them, and the kind of answers usually obtained. We first discuss some general facts about the Web graph: its size, its evolution rate, and other problems which make it hard to study. After this, we give an overview of the different statistics known about the Web graph, we give a sur...

Petra, osiris and molinspiration: A computational bioinformatic platform for experimental in vitro antibacterial activity of annulated uracil derivatives

Annulated pyrano[2,3-d]pyrimidine/pyrano[2,3-d]uracil derivatives were synthesized using aromatic aldehydes, active methylene compounds and barbituric acid in presence of dibutylamine (DBA) catalyst in ethanol as solvent. The different substituents on phenyl ring in the fused pyrano uracil skeleton showed productive influence on its antimicrobial activity against some gram positive and gram neg...

Ehics Captured by the Genes; A Survey on Richard Dawkin’s Opinions about Ethics Based on the Theory of Evolution

As an evolutionist biologist, Dawkins has commented on some non-biological fields of knowledge such as ethics. Regarding ethics, he has utilized different areas of knowledge like social biology, evolutionary psychology, genetics etc. The most important aspect of Dawkins theory is that he negates any form of moral distinction between human and animals. His concerns about dealing with ethics orig...

The Ribosome Emerges from a Black Box

Although the basic facts about the ribosome were already known 40 years ago, elucidating its atomic structure and molecular mechanisms required sheer persistence and the innovative use of new technology and methods. These advances have transformed our understanding of translation in the cell.