String primer

A String Primer*

This is an elem&ary introduction to the classical and quantum mechanics of a single bosonic string, and to some aspects of its supersymmetric and heterotic extensions1

DEVELOPMENT IN STRING THEORY

The string theory is a fast moving subject, both physics wise and in the respect of mathematics. In order to keep up with the discipline it is important to move with new ideas which are being stressed. Here I wish to give extracts from new papers of ideas which I have recently found interesting. There are six papers which are involved: I ."Strings formulated directly in 4 dimensions " A. N...

A Simple Genome Walking Strategy to Isolate Unknown Genomic Regions Using Long Primer and RAPD Primer

Background: Genome walking is a DNA-cloning methodology that is used to isolate unknown genomic regions adjacent to known sequences. However, the existing genome-walking methods have their own limitations. Objectives: Our aim was to provide a simple and efficient genome-walking technology. Material and Methods: In this paper, we dev...

Drill string Vibration Modeling Including Coupling Effects

Abstract: The governing equations of motion for a drill string considering coupling between axial, lateral and torsional vibrations are obtained using a Lagrangian approach. The result leads to a set of non-linear equations with time varying coefficients. A fully coupled model for axial, lateral, and torsional vibrations of drill strings is presented. The bit/formation interactions are assumed ...

Probability Primer 1 Running head: PROBABILITY PRIMER A Primer on Probabilistic Inference