Schizophrenia affects one in a hundred Canadians at some point in their life. This disorder is characterized by auditory hallucinations, delusions, lack of motivation and thought disorder. Antipsychotic drugs improve some of these symptoms, but there is no cure and the cause of schizophrenia is still unknown. Current models suggest that a brain lesion in-utero, in conjunction with neurodegeneration, may result in the symptoms of the disease. These processes may result in abnormal brain function, manifested as changes in brain metabolism.



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Imaging technology has a rich history that began thousands of years ago. The reflection from a pool of still water or a shiny metal surface was arguably the first imaging method routinely used by mankind. With the advent of lenses, many other novel forms of optical imaging emerged, including telescopes and microscopes.

Using a lens, a pinhole camera, and a sensitized pewter plate, Ni?pce was the first person to permanently record an image. Optical photography and other forms of optical imaging have since become commonplace.

Of course, im ....etc

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Terahertz (THz) research has received much attention recently. This development is due to the discovery of new THz-radiation sources and detectors such as quantum cascade lasers, photo conductive switches or electro-optic THz- detectors during the last decade. Of particular interest are broadband Thz-spectroscopy and imaging systems operating in the frequency range 0.1-10THz ....etc

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Terahertz (THz) research has received much attention recently. This development is due to the discovery of new THz-radiation sources and detectors such as quantum cascade lasers, photoconductive switches or electro-optic THz- detectors during the last decade. Of particular intereset are broadband Thz-spectroscopy and imaging systems operating in the frequency range 0.1-10THz.

This paper describes a technique for imaging in the terahertz regime using time reversal of single cycle pulses. Specifically, the time-reversal symmetry of Maxwell?s w ....etc

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Terahertz (THz) research has received much attention recently. This development is due to the discovery of new THz-radiation sources and detectors such as quantum cascade lasers, photoconductive switches or electro-optic THz- detectors during the last decade. Of particular intereset are broadband Thz-spectroscopy and imaging systems operating in the frequency range 0.1-10THz.
This paper describes a technique for imaging in the terahertz regime using time reversal of single cycle pulses. Specifically, the time-reversal symmetry of Maxwell’s ....etc

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IMPEDANCE SPECTROSCOPY
Presented by
Manu Gopal S
Applied Electronics and Instrumentation
College Of Engineering, Trivandrum
2007-11 batch



CONTENTS
Impedance spectroscopy
Its need and uses
Experimental set up
Circuit model for
Bare electrodes
Cell coated electrodes

Results
Conclusion
References

What is Impedance spectroscopy
EIS measures the dielectric properties of the medium as a function of frequency.
It is based on the interaction ....etc

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i need the ppt of this topic urgently... plz help ....etc

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I am Muhammed Sahal, studying B.tech electrical and electrics engineering in Cochin University College of Engineering Kuttanadu. I am doing a seminar on the topic 'Terahertz Imaging'. I kindly request you to give me a seminar report on this topic ....etc

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Presented By
FAHAD AZIZ


What is Spectroscopy?
 The study of how 'species' (i.e., atoms, molecules, solutions) react to light. Some studies depend on how much light an atom absorbs. The electromagnetic radiation absorbed, emitted or scattered by the molecule is analyzed. Typically, a beam of radiation from a source such as a laser is passed through a sample, and the radiation exiting the sample is measured. Some, like Raman, depend on a molecule's vibrations in reaction to the light.
 Sir Chandrashekha ....etc

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Terahertz (THz) research has received much attention recently. This development is due to the discovery of new THz-radiation sources and detectors such as quantum cascade lasers, photoconductive switches or electro-optic THz- detectors during the last decade. Of particular intereset are broadband Thz-spectroscopy and imaging systems operating in the frequency range 0.1-10THz. This paper describes a technique for imaging in the terahertz regime using time reversal of single cycle pulses. Specifically, the time-reversal symmetry of Maxwell?s wave ....etc

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