FUEL CELLS-Evolving Concepts and Developments

Introduction
Output of conventional batteries are limited.
They are polluting.
Continuous operation results in fall in efficiency.
Output not stable under long durations of operations.

Fuel Cells
An Electrochemical energy conversion device
Produces electricity from external fuel and oxidant.
Can operate virtually continuously as long as the necessary flows are maintained.

General Structure
Two electrodes sandwiched around an electrolyte
Hydro ....etc

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Data Mining: Concepts and Techniques


Preface
Our capabilities of both generating and collecting data have been increasing rapidly in the last several decades.
Contributing factors include the widespread use of bar codes for most commercial products, the computerization
of many business, scientic and government transactions and managements, and advances in data collection tools
ranging from scanned texture and image platforms, to on-line instrumentation in manufacturing and shopping, and to
satellite re ....etc

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Study on Fenestration concepts and Techniques for Daylighting



Abstract

Fenestrations are the products that fill openings in a building envelope, including windows, doors, skylights, and curtain walls designed to permit the passage of air, light, vehicles, or people. It has considerable impact on building occupants for day lighting, ventilation, thermal comfort, acoustics, and occupant well-being. Day lighting is an important factor affecting occupant well- ....etc

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Introduction to Transaction Processing Concepts and Theory

Chapter Outline

1. Introduction to Transaction Processing
2 .Transaction and System Concepts
3 .Desirable Properties of Transactions
4. Characterizing Schedules based on Recoverability
5. Characterizing Schedules based on Serializability
6 .Transaction Support in SQL

Introduction to Transaction Processing

Single-User System:
At most one user at a time can use the database management system.
Eg. Personal computer system
Multiuser Sys ....etc

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Information on techniques and concepts that will help a person to better electronic searcher

Babisho A. Abalon
Mombasa, Kenya
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