Most of the dielectric ceramic compositions consist of three or more different lead-based or non-lead ceramics. These materials and their solid solutions can give high dielectric constants (er>10000) but the disadvantage is large fluctuations in the dielectric constant with increasing or decreasing .....
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Conventional metallic white decorative hard coatings such as chromium and nickel coatings are deposited by electrochemical processes, and are known to reach a maximum hardness level of about 10-11 GPa. However, pollution problems associated with these processes, particularly those for chromium depo.....
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The Hong Kong Consortium for Globalization of Chinese Medicine, consisting of the six universities (HKBU, CityU, CUHK, HKU, PolyU and HKUST) and pooling together the expertise and strength of each individual university, forms a wide collaborative research platform, which offers a wonderful opportuni.....
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The invention can convert a non-dimmable lighting system to a dimmable one without replacing the non-dimmable ballast circuitry of the lighting system. By diverting the current being supplied to the lamp tube, the dimming module installed at each lamp tube can vary the brightness of the lamp. The mo.....
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