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贾兰坡,生于1908年11月25日,卒于2001年7月8日.河北玉田县郭家屯乡刑家村人.为世界级名人,全球知名的田石器考古学家、古人类学家、第四纪地质学家.他发现三具“北京人”头盖骨,震惊中外学术界,登上世界最高学术殿堂.身为中国科学院院士,同时又是美国国家科学院外籍院士、第三世界科学院院士,著有《中国古人类大发现》等大量的学术著作,在全球享有崇高的声誉.但他正规学历不高,只有中学毕业证书,是一位罕见的、没有大学文凭、却攀登上了科学殿堂顶端的传奇人物.他为人谦虚,不事张扬.他常说自己微不足道,有时取得点学术成果也只是得益于不间断的自学积累. 相似文献
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和许多退了休的银发族一样,我对养生保健的兴趣越来越浓,所以很自然地,《养生月刊》就成了我最好的老师和最真诚的朋友。多年来在其教诲下,我逐渐地理解了一些有益的养生理念,摸索出适合于自己的一些养生方法并日常练习,有时还把有关体会通过刊物向别人介绍。 相似文献
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Objective To evaluate the accuracy of automated quantification of myocardial perfusion imaging (MPI) using a method based on a Western normal database for the detection of coronary artery disease (CAD) in a group of Chinese patients. Methods Seventy-two Chinese patients who underwent coronary angiography (CAG) and MPI within 3 months were recruited into this study. Eighty selected from 140 Chinese patients with low probability of CAD ( < 5% ) were enrolled into local normal database of 99Tcm-methoxyisobutylisonitrile (MIBI) MPI using Cedars quantitative perfusion SPECT (QPS) database. Two Western MPI normal databases (CSMC MibiMbiAuto and Mibimibi) were used for processing the Chinese CAD patients recruited in this study, and the results were compared with those using local normal database and visual interpretation. T-test and z-test were used for statistical analysis. Results The extent (EXT)measurement obtained from Mibimibi and local database was ( 10.73 ± 14.54)% and ( 14.22 ± 16.51 )%,respectively ( t = 7.87, P < 0.001 ); the severity (SEV) was 1.07 ± 0.93 and 1.34 ± 1.20, respectively ( t =7.45, P<0.001). The area under curve(AUC) by using EXT measurement for local database (0.85 ±0.05) was larger than that for CSMC MibiMbiAuto ( AUC = 0.72 ± 0.06, z = 2.50, P < 0.01 ) and Mibimibi ( AUC = 0.77 ± 0.06, z = 2.47, P = 0.014). The AUC of local database showed no significant difference from that of visual interpretation (AUC=0.83 ±0.05, z=0.05, P>0.05). Conclusion Quantification of MPI of our Chinese patients using Western normal database would decrease the accuracy for the detection of CAD. 相似文献
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