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排序方式: 共有765条查询结果,搜索用时 15 毫秒
731.
A 76-year-old woman sustained severe multiple injuries when hit by a car. During the treatment a massive intraventricular hemorrhage was found by computer tomography. The postmortem examination revealed no craniocerebral injuries except for a small contused wound of the scalp. Microscopic examinations revealed a choroid plexus angioma in the lateral ventricle as the cause of the hemorrhage into cerebral ventricles.  相似文献   
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733.
Based on Harvard criteria findings, comparative morphological investigation on postmortem heart muscle biopsy following coronary insufficiency after sudden cardiac death have been reported. The subendothelial layer of the left ventricular wall has revealed a severe interstitial edema, various types of actin-myosin filamental destruction, mitochondrial damage, and disseminated muscle fiber necrosis. One of the first alterations observed was the change in transmembrane calcium and intracellular calcium metabolism. A decrease in succinic dehydrogenase and cytochrome oxidase activity was discovered early.  相似文献   
734.
Latin America's recent integrationist proposals have been presented as part of a new commitment to increasing living standards and international competitiveness. However, the frustrating results of integration in the past three decades should caution us against placing excessive emphasis on the technical aspects of trade. The author argues that important lessons can be learned from previous attempts to promote integration in this region while neglecting the political dimensions of integration. Inadequate organizational forms, weak institutional arrangements ruled by technocratic elites, may be more helpful as ceremonial devices in the legitimation of those elites than in advancing the substance of the integration project. Verónica Montecinos is assistant professor of sociology at The Pennsylvania State University, McKeesport Campus. She has researched the consequences of economic reforms on women as well as the growing involvement of professional economists in government and party politics. Her book on the economic bureaucracy in Chile is forthcoming.  相似文献   
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Allele and haplotype frequencies of 15 chromosome STR loci included in the kit PowerPlex16 System from Promega, were determined in a sample of unrelated males from Guiné-Bissau, a country from the west African coast. All individuals were subjected to an interview in order to make sure that their ancestors belonged to the same ethnic group. This way we intended to look for possible inter-ethnic differences. PowerPlex 16 includes STRs not studied before in any multi-ethnic population. The kit includes two new allele markers (Penta D and Penta E), which are very useful either in forensics or population genetic studies. The Guinean population presents significant differences when compared with other African populations.  相似文献   
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This article explores the European Commission goal of improving the quality and level of accessibility in mainstream information and communication technology (ICT) goods and services available in Member States through the use of public procurement legislation and performance standards. Over the past two decades, the Commission has encouraged Member States to adopt common requirements for accessibility and to strengthen efforts to use these requirements in public procurement. In the absence of significant improvements in the level of accessibility over this time, the Commission has more recently committed to bringing forward legislative proposals to harmonize the accessibility requirements used by Member States. A new procurement directive package contains stronger obligations on public bodies to include accessibility as mandatory requirements in Technical Specifications. In parallel to this, a standardization mandate by the Commission to the European Standards Organizations (ESOs) concluded in March 2014 with the publication of the first European standard on ICT accessibility. In light of these developments, this article analyses the trajectory of European policy in the field of accessibility over the last two decades, and the interplay between European public procurement, standardization and law. It examines how far these developments have succeeded in bringing into being a public procurement eco-system that will nudge the market in Europe to producing affordable and accessible ICT products and services for persons with disabilities.  相似文献   
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