Volatile organic compounds (VOCs) and carbon monoxide (CO) in the air are contaminants and are harmful to human health. Methods have been developed to eliminate the contaminants. Supported metal catalysts are found to be effective in low-temperature oxidation of CO and hydrocarbons and selective ox.....
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In recent years the demand for small cellular handsets has grown substantially and the need for still smaller handsets continues to increase. Planer inverted-F antenna (PIFA) designs have received attention since they are compact. Although smaller sizes PIFA are needed, the design of compact antenna.....
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Equalization is always necessary in wireless communication to remove or alleviate signal contamination during transmission. Blind Channel Equalization is a signal equalization technique, which does not require prior characterization of the transmission channel as a pre-requisite for satisfactory sig.....
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A new class of bistable twisted nematic (BTN) displays is invented. Unlike the conventional BTN displays that only have zero twist or -90º twist, this new series of BTN displays can have many different twist angles. By controlling the conditions of the twist angles and the retardation of liqu.....
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There are many applications for the Liquid crystal displays (LCD) that are bistable under zero voltage bias conditions. For examples, bistable cholesteric LCD; bistable ferroelectric LCD; bistable twisted nematic LCD where the two stable twist states differ by 360 degrees in twist angle; bistable tw.....
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