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A new method for determination of lysergic acid diethylamide (LSD) in body fluids by high-performance liquid chromatography and fluorescence detection was developed based on previously published methods. The new method is suitable for confirmation of samples tested positive by immunoassay, avoiding loss of LSD by absorption to surfaces. The reduced loss of LSD results in improved sensitivity. This is achieved by adding ethylene glycol to the samples, which cover glass surfaces. This principle can similarly be used to improve analysis of other drugs. Body fluids for analysis included urine and whole blood. An internal standard was applied for quantification of LSD. The new method offers satisfying precision data and has a detection limit of less than 0.05 ng/nL. 相似文献
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Increasingly development theorists and practitioners view NGOs as catalysts of sustainable development. NGOs have been regarded as champions of democratisation and promoters of new ways of engaging in politics, with considerable influence on the development of civil society and new partnerships in environmental and social advocacy. This article analyses the ways in which Costa Rican environmental NGOs (ENGOs) engage in politics, by focusing on their perceptions of their roles in environmental governance and in representation of civil society. The results of this study suggest that the ENGOs' ways of engaging in politics differ little from traditional forms of governance, while their conceptions of engaging in politics without being political are novel. While most ENGOs had no clear conception of the stakeholders whom they were supposed to be representing, the notion of representativeness is complex and should be revisited. 相似文献
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Jennifer Langhinricbsen-Rohling Candice M. Monson Kathryn A. Meyer Jeffrey Caster Audrey Sanders 《Journal of family violence》1998,13(3):243-261
The purpose of the current study was to determine if college students' retrospective reports of family-of-origin physical abuse were related to their current reports of depressed symptomology, hopelessness, and suicidal and life-threatening behavior. Consistent with hypotheses, abuse by a parent (physical and psychological) and physical perpetration toward a parent were associated with increased rates of suicidal and life-threatening behavior. Gender of the parent was also shown to be important as symptoms of depression were related to mother but not father victimization and perpetration. Contrary to expectation, witnessing parental spouse abuse was not associated with young adults' current symptoms of depression, hopelessness, and suicidal and life-threatening behavior. These findings were interpreted with regard to the intergenerational transmission of violence theory. 相似文献
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Characteristics of Backspatter on the Firearm and Shooting Hand—An Experimental Analysis of Close‐range Gunshots 下载免费PDF全文
Sebastian N. Kunz M.D. Ph.D. Herwig Brandtner M.D. Harald J. Meyer Ph.D. 《Journal of forensic sciences》2015,60(1):166-170
Contact and close‐range gunshot injuries can produce bloodstains on the shooting hand and weapon. In this study, backspatter was analyzed in experimental horizontal pistol shots into blood‐filled sponges. The shooting distances were set between 0 and 45 cm. With increasing shooting distance, there was a significant decrease in the degree of backspatter. Microspatter could be detected on the weapon and shooting hand up to a shooting distance of 40 cm. They were predominantly located on thumb and index finger as well as the radial dorsal aspects of the hand. Fine spray of microspatter combined with elongated droplets in the shape of exclamation marks was found at contact and 2‐cm distance shots. An angular calculation based on the shape of the bloodstains was possible up to a shooting distance of 2 cm. No bloodstains were detected beyond 45 cm. 相似文献
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