1. INTRODUCTION
ELECTRONIC Noses (EN), in the broadest meaning, are instruments that
analyze gaseous mixtures for discriminating between different (but similar) mixtures and, in
the case of simple mixtures, quantify the concentration of the constituents. ENs consists of a
sampling system (for a reproducible collection of the mixture), an array of chemical sensors,
Electronic circuitry and data analysis software. Chemical sensors, which are the heart of the
system, can be divided into three categories according to the ty ....etc

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ABSTRACT
In an ever-developing world, where electronic devices are duplicating every other sense of perception, the sense of smell is lagging behind. Yet, recently, there has been an urgent increase in the need for detecting odours, to replace the human job of sensing and quantification. Some of the most important applications fall in the category where human beings cannot afford to risk smelling the substance. Other important applications are continuous monitoring, medical applications, etc. These application ....etc

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Onboard the space station, astronauts are surrounded by ammonia. It flows through pipes, carrying heat generated inside the station (by people and electronics) outside to space. Ammonia helps keep the station habitable.

But it's also a poison. And if it leaks, the astronauts will need to know quickly. Ammonia becomes dangerous at a concentration of a few parts per million (ppm). Humans, though, can't sense it until it reaches about 50 ppm.

Right: Astronaut Mike Fincke onboard the International Space Station.

Ammonia is just one ....etc

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Abstract
In a developing world, where electronic devices are doubling any other sense of perception, the sense of smell is lagging behind. However, recently, there has been an urgent increase in the need to detect odors, to replace human work detection and quantification.

Some of the most important applications fall into the category in which humans can not afford the risk of sniffing the substance. Other important applications are continuous monitoring, medical applications, etc. These applications allow the man to perform tasks pre ....etc

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I am a student of biotechnology, i want to constuct the electronic nose for disease diagnosis so please give the imformation regarding to this topic and its construction. please send me all imformation on my email id.

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ELECTRONIC NOSE



Introduction

An electronic nose system typically consists of a multisensor array, an information-processing unit such as an artificial neural network (ANN), software with digital pattern-recognition algorithms, and reference-library databases . The cross-reactive sensor array is composed of incrementally-different sensors chosen to respond to a wide range of chemical classes and discriminate diverse mixtures of possible analytes. The output from individual s ....etc

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