Analysis of ionic ratios in myocardial tissue and their relation to cardiac damage

The authors evaluated the usefulness of the postmortem biochemical analysis of ionic ratios in different parts of the heart and their relation to cardiac damage caused by chest trauma, as observed by anatomopathologic study. Fifty-nine 59 cases were studied, selected from routine necropsies, and samples were taken from different sites of cardiac tissue. The cause of death was trauma in 40 cases and nontraumatic causes in 19 cases. The object of this study was to analyze the levels of Na+, K+, Ca+2, Mg+2, and Zn+2 in different zones of the heart, and the relationship between intracellular and extracellular ion ratios and the different causes of death and any anatomopathologic alterations observed. The biochemical tests revealed a possible relation between the ionic values and cause of death. Alterations in cell membrane permeability and corresponding modification of the ionic ratios were produced earlier than histologic alterations, which need longer to establish themselves whether or not they follow a traumatic process.     

Determination of sex from the clavicle and scapula in a Guatemalan contemporary rural indigenous population

The clavicle has been described as a useful bone for the metric determination of sex of human skeletal remains in a contemporary, predominantly white, North American forensic sample. In this article, measurements of clavicle and scapula are provided for a contemporary Guatemalan rural indigenous sample of forensic origin. Maximum length and circumference at midshaft of the clavicle, and height and width of the glenoid fossa of the scapula, were measured in 35 female and 62 male clavicles, and in 38 female and 65 male scapulae. Discriminant function analysis was used to study sexual dimorphism in this population with a classification purpose. Leave-one-out method (jackknife) matrices produced classification success rates ranging from 85.6% to 94.8%. A comparison with the North American forensic sample showed low percentages of correctly sexed Guatemalan male clavicles, ranging from 29.4% to 54.9%. The choice of an appropriate standard for the metric determination of sex is a crucial step in forensic anthropology.     

STR data for the AmpFlSTR Profiler Plus loci from Greece

Allele frequencies for the nine STRs included in the AmpFlSTR Profiler Plus kit (D3S1358, VWA, FGA, D8S1179, D21S11, D18S51, D5S818, D13S317 and D7S820) were estimated from a sample of 143 unrelated individuals living in different regions of Greece.     

中国共产党执政有效性研究述评

本文就中国共产党执政有效性的含义、与合法性的关系、路径选择三个方面,概述了当前学界的代表性观点,以促进学界对此进一步深入研究。     

巴西、阿根廷的青年与青年研究现状及其启示

应巴西社会学学会和阿根廷布宜诺斯艾利斯大学的邀请,中国青少年研究中心学术代表团于2006年5月赴巴西和阿根廷访问,分别与巴西政府相关部门、巴西社会学学会和布宜诺斯艾利斯大学进行会谈、交流。此次出访,代表团较为全面地了解了巴西、阿根廷的青年和青年研究状况。在此,我们将出访的收获及印象粗略整理,做一简要介绍。一、巴西和阿根廷的青年及青年研究状况巴西与阿根廷的青年研究者较少,研究的成果也不多。在很大程度上,两国的青年研究尚未形成研究网络,研究资源的整合不尽如人意,缺乏对全国总体状况的把握。1.巴西的青年及青年研究状况…     

试论交际法在公共英语教学中的运用

为了适应新世纪具有创新精神和实践能力的高素质人才的需求 ,高校的公共英语教学应把培养学生的交际能力作为出发点和目的。过去 ,交际法被认为只适用于英语专业学生的听说课 ,但实践证明 ,通过认真设计教案 ,精心组织教学 ,交际法同样适用于非英语专业学生的精读课。     

Population genetics of the D1S1656, D12S391, and D18S535 loci in Asturias (North Spain)

Allele and genotype frequencies for three recently described short tandem repeat loci D1S1656, D12S391, and D18S535 were determined in a population sample from Asturias (North Spain). The loci were amplified using a fluorescence based PCR method and were typed automatically. No deviation from Hardy-Weinberg expectations were observed. The three loci proved to be highly discriminating and the allele frequencies observed are similar to those of the other European populations that have been typed for these loci to date.     

Striking hard rock veins. Multinational Corporations and Miners’ Unions in Mexico and the United States, 1906-1952

ABSTRACT

This paper analyzes simultaneous strikes during the first half of the 20th century in North America. The transformation of production in copper, lead, zinc, and silver mining districts determined the formation of a working class that operated between Mexico and the United States. Therefore, the labor conflicts combined market circumstances and management-imposed homologation of work structures across firm divisions with the international coordination of miners. The paper describes the emergence, growth, and demise of a regional industrial system.