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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Low-dropout regulator is a commonly used component in the power management integrated circuits for portable electronic devices. Conventionally, the stability of the regulator was achieved by frequency compensation such as dominant-pole compensation and pole-zero cancellation. However, this limits th.....
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Retinoic acid (RA) induces the differentiation of many cell types such as epithelial cells and cancer cells. Clinically, RA has been demonstrated to be efficacious in the treatment of promyelocytic leukemia, a type of blood disease. RA has also been shown to affect patterning and neurogenesis in viv.....
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Traditional methods for resistivity measurements of concrete have to use two plate electrodes at opposite sides of a prism specimen. The major drawback of such a method is that the electrodes can be easily detached from the specimen due to shrinkage of concrete. Thus the measurement of resistivity.....
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Flue gases produced in combustion processes, such as coal-fired power plants, automobiles, smelters, etc., contains huge amount of nitrogen and sulfur oxides, carbon monoxide and particulates. They contribute significantly to atmospheric pollution and some of them are stringently controlled by legis.....
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