Definition

The basic principles of Dual Energy X-ray Absorptiometry have been discussed in this presentation. DEXA is a instrumental technique used to measure bone mineral density (BMD), which is the widely accepted indicator of bone strength. DEXA scanner is the most widely used modern electronic machine to diagnose the disease osteoporosis, the thinning of bones. Human body being a heterogeneous system, use of a dual energy, rather than single energy, X-ray source is necessary for scanning. The interaction of the sample with the X-ray beam ....etc

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Seminar Report On Blu-Ray Disc
ABSTRACT
Blu-ray, also known as Blu-ray Disc (BD) is the name of a next-generation optical disc format jointly
developed by the Blu-ray Disc Association (BDA), a group of leading consumer electronics and PC companies
(including Apple, Dell, Hitachi, HP, JVC, LG, Mitsubishi, Panasonic, Pioneer, Philips, Samsung, Sharp, Sony, TDK
and Thomson). The format was developed to enable recording, rewriting and playback of high-definition video
HD), as well as storing large amount ....etc

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SYNOPSIS

Non- destructive estimation of particle size of finished products is essentially required to judge their suitability for intended applications. For this estimation, a ceramic heating element (SiC rod) of a heat Treatment furnace at 1400 Degree celcius has been chosen. The particle size has been estimated with the proposed method based on counting reflection spots in a back reflection X-Ray pattern. Calibration curve has been drawn on the basis of the data obtained by standard sieve me ....etc

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Optical disks share a major part among the secondary storage devices.Blu .ray Disc is a next .generation optical disc format. The technology utilizes a blue laser diode operating at a wavelength of 405 nm to read and write data. Because it uses a blue laser it can store enormous more amounts of data on it than was ever possible.
Data is stored on Blu .Ray disks in the form of tiny ridges on the surface of an opaque 1.1 .millimetre .thick substrate. This lies beneath a transparent 0.1mm protective layer. With the help of Blu .ray recording dev ....etc

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literature survey on blu ray disc ....etc

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Blu-Ray Disks

INTRODUCTION(contd)
A single-layer Blu-ray disc, which is roughly the same size as a DVD, can hold up to 25GB of data -- that's more than two hours of high-definition video or about 13 hours of standard video.
A double-layer Blu-ray disc can store up to 50 GB, enough to hold about 4.5 hours of high-definition video or more than 20 hours of standard video.
Users will be able to connect to the Internet and instantly download subtitles and other interactive movie features.
HISTORY
[i ....etc

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Hi i want seminar topic on BDXl (blu-ray) 100GB .. Plz if anyone has it plz upload .. THE PPT and REPORT .. Next week i have to present it in class

Thanx in Advance ....etc

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Introduction
Tokyo Japan, February 19, 2002: Nine leading companies today announced that they have jointly established the basic specifications for a next generation large capacity optical disc video recording format called Blu-ray Disc. The Blu-ray Disc enables the recording, rewriting and play back of up to 27 gigabytes (GB) of data on a single sided single layer 12cm CD/DVD size disc using a 405nm blue-violet laser.
By employing a short wavelength blue violet laser, the Blu-ray Disc successfully minimizes its beam ....etc

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