俱乐部式授课在初中体育活动课的运用

体育活动课是体育课的延续,是学校体育的重要组成部分.随着素质教育的实施、快乐体育的推广,体育活动课在教学形式上也应大胆创新.借鉴高校俱乐部式授课方式,会使初中学校体育活动更加丰富多彩.体育活动课俱乐部式教学具有以下优越性:……     

SYNTHESIS AND PROPERTIES OF HEPARINIZED POLYMETHACRYLIC ACID

ＳＹＮＴＨＥＳＩＳＡＮＤＰＲＯＰＥＲＴＩＥＳＯＦＨＥＰＡＲＩＮＩＺＥＤＰＯＬＹＭＥＴＨＡＣＲＹＬＩＣＡＣＩＤ￥ＦｅｎｇＰｉｎｚｈｅｎ；ＬｕＪｉａｎｔａｏ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙ，ＧｒａｄｕａｔｅＳｃｈｏｏｌ，ＡｃａｄｅｍｉａＳｉｎ...     

西藏布达拉宫、罗布林卡和萨迦寺壁画制作材料分析

本文介绍了西藏布达拉宫、罗布林卡和萨迦寺三处壁画的保存现状、病害种类、壁画地仗及墙体的制作工艺 ,并对壁画制作材料进行了分析研究     

Increased expression of aquaporin-4 in human traumatic brain injury and brain tumors

Objective:To characterize the expression of aquaporin-4(AQP4),one of the aquaporins(AQPs),in human brainspecimens from patients with traumatic brain injury or brain tumors.Methods:Nineteen hnman brain specimens were obtahledfrom the patients with traumatic brain injury,brain tumors,benign meningioma or early stage hemorrhagic stroke.MRI or CTimaging was used to assess brain edema.Hematoxylin and eosm staining were used to evaluate cell damage,Immunohistochem-istry was used to detect the AQP4 expression.Results:AQP4 expression was increased from 15 h to at least 8 d after injury.AQP4immunoreactivity was strong around astrocytomas,ganglioglioma and metastatic adenocarcinoma.However,AQP4 immunore-activity was only found in the centers of astrocytomas and ganglioglioma,but not in metastatic adenocarcinoma derived from lung.Conclusion:AQP4 expression increases in human brains alter traumatic brain injury,within brain-derived tumors,and aroundbrain tumors.     

Developmental dyscalculia is a familial learning disability

Whereas current evidence attests to a genetic component in the etiology of dyslexia and attention-deficit/hyperactivity disorder (ADHD), little is known about the role of genetics in developmental dyscalculia (DC). The objective of this study was to determine the familial aggregation of DC. Siblings and parents of children with DC were assessed for arithmetic, reading and attention disorders. The criteria for DC were an IQ higher than 85, poor performance in arithmetic, and a significant discrepancy between arithmetic achievement and IQ. The study group was composed of 39 children with DC, 21 mothers, 22 fathers, 90 siblings, and 16 second-degree relatives. We found that 66% of mothers, 40% of fathers, 53% of siblings, and 44% of second-degree relatives had DC. The intraclass correlation between the sib pairs was .27. A 95% confidential interval (CI) for the prevalence of DC among siblings of DC probands (see Note 1) ranged from 40% to 64%, indicating a familial prevalence almost tenfold higher than expected for the general population. IQ and attention problems were not risk factors for DC. We conclude that DC, like other learning disabilities, has a significant familial aggregation, suggesting a role for genetics in the evolution of this disorder.     

教育，就是开发学生的创造潜能

21世纪教育的最大变化是:教育正在变为学习和交流活动,将从以学科为中心转变为以学习者为中心,将从规范的统一性转变为选择的多样性,将从维持性学习转变为创新性学习。总之,教育应该成为开发和释放人的创造潜能的发动机。     

高职院校体育教学模式探讨

针对高职类院校的体育教学模式进行分析,并结合现代体育教学的新思想、新观念,探讨职业类院校在新课程理念下体育教学观念的更新。     

DETERMINATION OF CYANIDE BY A SPECTROPHOTOMETRIC REVERSED FLOW INJECTION METHOD

ＤＥＴＥＲＭＩＮＡＴＩＯＮＯＦＣＹＡＮＩＤＥＢＹＡＳＰＥＣＴＲＯＰＨＯＴＯＭＥＴＲＩＣＲＥＶＥＲＳＥＤＦＬＯＷＩＮＪＥＣＴＩＯＮＭＥＴＨＯＤ￥ＪｉｎｇｆｕＬｉｕａｎｄＨｕｉｃｈａｎｇＭａ（ＲｅｓｅｔｒｃｈＣｅｎｔｅｒｆｏｒＥｃｏ－Ｅｎｖｉｒｏｎｍｅｎ...     

The mystery of the Einstein-Poincaré connection

This essay discusses attempts that have been made to explain the striking similarities between two theories propounded in 1905 by Albert Einstein and Henri Poincaré without any mutual reference.