The utility model provides a dozing detection alarm which comprises a brain wave data acquisition unit which comprises an electrode contacting the heads of detected people, a signal processing circuit, an alarm device and a digital signal processor which is respectively connected with the brain wave.....
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The present invention discloses a phase lead compensation network, power converters, and closed-loop control system, the phase lead compensation network is provided in the power converter closed-loop control system, the closed loop control system further comprises: power converter and control module.....
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目前全世界约2亿人患有骨质疏松症，其发病率已跃居常见病、多发病的第七位。而中国的骨质疏松患者已由1992年的6300万人，上升到2006年的9000万人，因此用药市场前景非常广阔。市场上预防和治疗骨质疏松症的西药如雌激素及其合成代用品的效果虽极为可靠,但由于治疗骨质疏松症需长期服药, 因此其潜在的致癌性等副作用限制了临床应用, 且远期疗效亦不肯定。而中成药多为复方制剂，虽有确定的疗效，但有效成分不明，作用机理不清，且制剂粗糙的缺点。我中心研制的益骨胶囊以传统中医理论为指导，采用现代工艺提取传统中药的有效部位，富集有效部位从补肾入手，作用于骨质疏松的各个环节，最终达到纠正机体激素失衡和负钙平衡的.....
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