患者女,74岁.呕吐鲜红色血液约700 ml,黑色糊状便7次,伴头晕、乏力6 h,以上消化道大出血于2002年12月19日入我院内科治疗.否认胃病和肝炎病史.体检:体温36.2℃;呼吸20 次/min;脉搏90 次/min;血压105/75 mm Hg(1 mm Hg=0.133 kPa);贫血外貌,腹部无压痛及反跳痛,肝脾未触及,肠鸣音活跃.血液分析:红细胞2.27×1012/L,血红蛋白7.4
Single electron transistors(SETs) are known to be extremely sensitive electrometers owing to their high charge sensitivity. In this work, we report the design,