Overview

Asthma, chronic inflammatory respiratory disease characterized by periodic attacks of wheezing, shortness of breath, and a tight feeling in the chest. A cough producing sticky mucus is symptomatic.

The symptoms often appear to be caused by the body's reaction to a trigger such as an allergen certain drugs, an irritant (such as cigarette smoke or workplace chemicals), exercise, or emotional stress.

These triggers can cause the asthmatic's lungs to release chemicals that create inflammation of the bronchial lining, constrictio ....etc

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ABSTRACT
A single-chip CMOS Global Positioning System (GPS) radio has been integrated using only a couple of external passive components for the input matching network and one external reference for the synthesizer. The receiver downconverts the GPS L1 signal at 1575.42 MHz to an IF of 9.45 MHz. The complete front-end and frequency synthesizer section have been integrated: low noise amplifier, image rejection mixer, IF active filter, and the full phase-locked loop synthesizer, including voltage-controlled osci ....etc

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seminar topics for linear integrated circuits ....etc

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In power electronics, solid-state electronics is used for the control and conversion of electric power .The goal of power electronics is to realize power conversion from electrical source to an electrical load in a highly efficient, highly reliable and cost effective way. Power electronics modules are key units in a power electronics system. These modules contain integration of power switches and associated electronic circuitry for drive control and protection and other passive components.

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PPT for integrated power electronics module ....etc

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ABSTRACT


This paper presents a new technique for the protection of power transmission systems by using the Global Positioning System (GPS) and fault generated transients, the Integrated Positional Protection technique.A specially designed integrated positional protection relay, which contains a fault transient detection system together with a substation communication network, is connected to the power line.The relay detects the fault generated high frequency voltage transient ....etc

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previous work, recent advances in monolithic microwave integrated circuits and also advantages & disadvantages of MMICs. ....etc

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ABSTRACT
The Integrated Gate Commutated Thyristor (IGCT) combines the advantages of the hard driven GTO thyristor, including its dramatically improved turn- off performance, with technological breakthroughs at the device, gate-drive and application levels. Homogenous switching area of the IGCT up to the dynamic avalanche limits. Snubber circuits are no longer needed. Improved loss characteristics allow high frequency applications extending into the kHz range. A new ....etc

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ASTHMA AND ANTI ASTHAMIC DRUGS



INTRODUCTION:
Spontaneous rhythms controlled by respiratory system.
Regulation of airway
Afferent pathway:
Irritantant receptor and unmylenated c fibers respond to inflammatory stimuli cause bronchoconstriction through ach.

Definition:

Defined as recurrent reversible air way obstruction of air flow trough the air way.
Characteristics:
Asthma is two types
Chronic asthma dyspnoea,wheezing ,and cough. R ....etc

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