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排序方式: 共有1347条查询结果,搜索用时 15 毫秒
31.
Andrea Y. Garzón-Serrano M.Sc. César A. Sierra Ph.D. Oscar Rodríguez-Bejarano Dr.Sc. Diana Sinuco Dr.Sc. 《Journal of forensic sciences》2020,65(4):1085-1093
Ammonium nitrate fuel oil is an explosive mixture found in most antipersonnel landmines (APL) buried throughout the Colombian territory. During more than 50 years of internal conflict, the Colombian government has found that trained dogs are the most effective method to detect APL. However, the olfactive signature in ANFO is unknown and also if there are differences in detection related to the explosive manufacturing origin. Therefore, this work begins with the analytical validation of the method used to determine ammonia, in its derivatized form as carbamate, released by home-made ANFO using HS-SPME-GC-FID. Once validated, the method was used to identify ammonia and other organic volatile compounds present in ANFO, under laboratory and simulated field conditions. The validation process includes the evaluation of the optimum conditions for the derivation and extraction of butylcarbamate, the determination of the working ranges with linear response in FID, the limits of detection and quantification, the sensitivity, and the precision. The results of the validation established linearity and sensitivity in a concentration between 20 and 120 mg/L, as well as low limits of detection and quantification of 6.4 and 21.4 mg/L, respectively. Also, an intermediate precision of 11% for butylcarbamate with a repeatability of 8%. The validated method showed in real samples of home-made ANFO besides ammonia, the presence of low molecular methylamines, and also exhibited differences in volatile compositions according to the origin. The objective of this work is to offer a reliable analytical methodology for the extraction and analysis of volatile compounds from ANFO. 相似文献
32.
Dr. Stephan Moebius 《Berliner Journal für Soziologie》2009,19(1):104-126
What holds society together? In his famous essay The Gift (1925) Marcel Mauss answers this question. However, as this paper shows, he does so not by formulating something like a theory of reciprocity as was often assumed after Claude Lévi-Strauss’ brought forward his structuralist interpretation of Mauss. Instead, the reason why gift practices create obligatory, cohesive social bonds lies in experiences of ?being-possessed“ and self-transcendence. This assumption is proven by means of a new and detailed reading of Mauss’ Essai sur le don as well as by the anti-utilitarian reception of Mauss’ work by the Collège de Sociologie (Georges Bataille, Roger Caillois, Michel Leiris). Overall, Mauss’ theory of the gift features important elements of a theory of posession and self-transcendence which focuses on the dimensions of experience and action. This is why one can discern a certain similarity between Mauss’ and the pragmatist theory of action. Only against that backdrop the social binding force of gift practices can be explained. 相似文献
33.
The article subjects the research rating of sociology, published in 2008 and carried out by an evaluation group on behalf of the German Science Council, to a secondary analysis. It is shown that the research rating constructs a reality of sociology which does justice neither to the variety of sociological knowledge production nor to its own claim of multidimensionality. Unwillingly, the peer reviewed article has imposed itself as the dominant criterion for assessing the research quality of research units against other types of publication and other activities such as externally funded research, knowledge transfer for practical problem-solving and knowledge diffusion in the public sphere. This preference also affected the assessment of entire research institutions with regard to their impact and efficiency as well as the devaluation of knowledge transfer and diffusion. In this way, sociology is limited to the type of professional sociology, while critical, public and policy-oriented sociology are displaced. 相似文献
34.
Prof. Dr. Hans-Peter Müller 《Berliner Journal für Soziologie》2009,19(2):227-247
Emile Durkheim was neither a political scientist nor a political sociologist. His oeuvre though exhibits a political dimension which is not easy to grasp. This article makes the attempt to reconstruct his project of a moral politics of individualism. How is it possible to institutionalize successfully what Durkheim calls moral individualism? Durkheim’s project rests upon two pillars: the scientific and scholarly pillar which aims at the establishment of sociology as a scientific discipline at universities. The political pillar which sets out to analyze the socio-structural, institutional, cultural conditions, forms and effects of individualism and the successful socialization of its values which allows to take seriously the rhetoric of the freedom and dignity of human beings in modernity. Durkheim’s project is confronted with the traditional images of politics and the social order to delineate the differentia specifica of his moral politics of individualism. 相似文献
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Both at Nordic and European level, public research funding is taking new forms. In this article we identify some new trends and ask which consequences they could have for interdisciplinary research, especially for studies on gender. Based on data gathered in an on‐going EU research project on interdisciplinarity and the integration of Humanities and the Social Sciences, we discuss the Nordic situation in comparison to some European countries which are part of the project. We argue that the new trends are contradictory and ambiguous. We explore what happens to disciplinary divisions in the emerging new structures. In a tentative conclusion we suggest that the European streamlining of research funding in combination with a demand for large‐scale co‐operation are possible threats to small interdisciplinary fields like feminist research. While disciplinary boundaries on a structural level seem to dissolve, they are maintained in application and evaluation practices. Research programmes focusing on interdisciplinarity and themes within feminist research might instead be opportunities. 相似文献
38.
Dr. Laura E. Donaldson 《Women's Studies: An inter-disciplinary journal》2013,42(3-4):373-387
Wanton Eyes &; Chaste Desires: Female Sexuality in The Faerie Queene. By Sheila T. Cavanagh. Bloomington: Indiana University Press, 1994. Colonial American Travel Narratives. Edited by Wendy Martin. London and New York: Penguin, 1994. The Invention of Pornography: Obscenity and the Origins of Modernity, 1500–1800. Edited by Lynn Hunt. New York: Zone Books, 1993. 相似文献
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Ass.-Prof. Dr. Ulfried Terlitza 《wohnrechtliche bl?tter: wobl》2011,24(7-8):185-205
Dass Verwaltungshandlungen von Verfügungsma?nahmen deutlich abzugrenzen sind, entspricht dem Grundverst?ndnis von Mit- und Wohnungseigentum. Dass sich die Notwendigkeit einer klaren Grenzziehung zwischen diesen Bereichen nicht zuletzt aus den gesetzlichen Vorgaben, wie insb den unterschiedlichen Konsenserfordernissen, ableitet, erscheint ebenso unzweifelhaft. Umso augenf?lliger sind Bemühungen in Rechtsprechung, Lehre und auch Gesetzgebung, den Bereich der Verwaltungsagenden zu Lasten der Verfügungen best?ndig zu erweitern. Der vorliegende Beitrag soll derartige Tendenzen vor dem Hintergrund der lex lata hinterfragen. Es sollen typische Fallkonstellationen an der Grenze zwischen Verwaltung und Verfügung n?her beleuchtet und der Versuch unternommen werden, die Grenzlinien pr?ziser abzustecken. Wo die geltende Rechtslage zu unbefriedigenden Ergebnissen führen muss, sollen zudem m?gliche Auswege aufgezeigt werden. 相似文献