The science and technology of deep refrigeration processing occurring at temperatures lower than about 150 k. is the field of cryogenics. The name cryogenics is evolved from Greek word ?kryos? meaning icy cold. Phenomena that occurs at cryogenic temperatures include liquefaction and solidification of ambient gases; loss of ductility and embrittlement of some structural materials such as carbon steel; increase in thermal conductivity to a maximum value, followed by further decrease in temperature. Cryogenics is the low temperature (150 K) refrig ....etc

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CRYOGENICS AND ROCKET PROPULSIONS



INTRODUCTION

A rocket is a machine that develops thrust by the rapid expulsion of matter. The major components of a chemical rocket assembly are a rocket motor or engine, propellant consisting of fuel and an oxidizer, a frame to hold the components, control systems and a cargo such as a satellite. A rocket differs from other engines in that it carries its fuel and oxidizer internally, therefore it will burn ....etc

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pls help ....etc

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Overview

Spinal cord infarction (sometimes called spinal stroke) refers to injury to the spinal cord due to oxygen deprivation.
Spinal cord infarction occurs when one of the three major arteries that supply blood (and therefore oxygen) to the spinal cord is blocked.

As a result of such an occlusion, the spinal cord is deprived of oxygen, resulting in injury and destruction of the very vulnerable nerve fibers. The resulting disability will depend on what level of the spinal cord suffers the injury; everything below the area of the occlus ....etc

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The science and technology of deep refrigeration processing occurring at temperatures lower than about 150 k. is the field of cryogenics. The name cryogenics is evolved from Greek word ?kryos? meaning icy cold. Phenomena that occurs at cryogenic temperatures include liquefaction and solidification of ambient gases; loss of ductility and embrittlement of some structural materials such as carbon steel; increase in thermal conductivity to a maximum value, followed by further decrease in temperature. Cryogenics is the low temperature (150 K) refrig ....etc

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Study on the Mechanism and Locomotion Strategy
for New Snake-Like Robot Active Cord Mechanism


This paper presents ACM-S1 (Active Cord Mechanism
- Slime model 1), a snake-like robot. Conventional
snake-like robots have difficulty negotiation uneven
ground. In this paper, we propose “a bending
and expanding joint unit” which has three degrees
of freedom (3DOF) in inchworm/angleworm-like
motion and has been developed to solve this problem.
The ACM-S1 we developed is composed of a series
of these joint units. ....etc

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i need ppt on cryogenics and its space applications. ....etc

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1. INTRODUCTION TO CRYOGENICS
Cryogenics is the study of how to get to low temperatures and of how materials behave when they get there. Besides the familiar temperature scales of Fahrenheit and Celsius (Centigrade), cryogenicists use other temperature scales, the Kelvin and Rankine temperature scale. Although the apparatus used for spacecraft is specialized, some of the general approaches are the same as used in everyday life. Cryogenics involves the study of low temperatures from about 100 Kelvin to ....etc

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advantages and disadvantages of cryogentics ....etc

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