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61.
Determination of Herbicides Paraquat,Glyphosate, and Aminomethylphosphonic Acid in Marijuana Samples by Capillary Electrophoresis
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Rafael Lanaro M.Sc. José L. Costa Ph.D. Silvia O. S. Cazenave Ph.D. Luiz A. Zanolli-Filho M.Sc. Marina F. M. Tavares Ph.D. Alice A. M. Chasin Ph.D. 《Journal of forensic sciences》2015,60(Z1):S241-S247
In this work, two methods were developed to determine herbicides paraquat, glyphosate, and aminomethylphosphonic acid (AMPA) in marijuana samples by capillary electrophoresis. For paraquat analysis, sample was extracted with aqueous acetic acid solution and analyzed by capillary zone electrophoresis with direct UV detection. The running electrolyte was 50 mmol/L phosphate buffer (pH 2.50). For glyphosate and AMPA, indirect UV/VIS detection was used, as these substances do not present chromophoric groups. Samples were extracted with 5 mmol/L hydrochloric acid. The running electrolyte was 10 mmol/L gallic acid, 6 mmol/L TRIS, and 0.1 mmol/L CTAB (pH = 4.7). The methods presented good linearity, precision, accuracy, and recovery. Paraquat was detected in 12 samples (n = 130), ranging from 0.01 to 25.1 mg/g. Three samples were positive for glyphosate (0.15–0.75 mg/g), and one sample presented AMPA as well. Experimental studies are suggested to evaluate the risks of these concentrations to marijuana user. 相似文献
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Jack Garland Kilak Kesha Charley Glenn Paul Morrow Simon Stables Benjamin Ondruschka Larissa Lohner Rexson Tse 《Journal of forensic sciences》2022,67(1):251-256
Blood and blood clots should be removed from the heart chambers before being weighed. The actual method in removing blood and blood clots may vary and can include manual removal with subsequent rinsing the heart in water. It is unclear whether drying the rinsed heart affects the heart weight. The objective of this article was to investigate the effects drying the rinsed dissected heart (residual rinsing water) on postmortem heart weight. The prospective study compared 44 dissected heart weights after being rinsed and after being pat dried. An average 18–20 g of residual rinsing water (4% of heart weight) was present in the dissected heart. The amount of residual rinsing water correlates positively with heart weight. The effects of drying the rinsed dissected heart were considered clinically insignificant. Although being clinically insignificant, this study highlights the lack of standardized approach in weighing the heart and the potential implications in interpreting heart weights. 相似文献
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Marina Julia Mu?oz-Rivas Manuel G��mez-Guadix Liria Fern��ndez-Gonz��lez Mar��a Pilar Gonz��lez Lozano 《Journal of family violence》2011,26(8):575-584
The aim of this study was to analyze the psychometric properties of two instruments that assess attitudes justifying use of aggression in adolescents?? dating relationships: the Attitudes About Aggression in Dating Situations (AADS) and the Justification of Verbal/Coercive Tactics Scale (JVCT). The sample was made up of 2,856 adolescents from different high schools of Madrid. Results supported the three-factor structure for the AADS and the six-factor structure for the JVCT, which was consistent with the theory and with previous research. As expected, the relation between attitudes and aggressive behavior was between small and moderate but significant in most cases. Furthermore, attitudes differed depending on the type of violence, the respondent??s sex, and on whether aggression is carried out by a man or a woman. Finally, the potential applications of these two scales are discussed, and it is concluded that both constitute useful tools to assess justification of aggression in dating relationships in young couples. 相似文献
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A partial replication of Jack Katz's (1982 ) Poor People's Lawyers in Transition, this article explores the manifestations and consequences of professional marginality of legal aid lawyers. Based on thirty‐five interviews with poverty attorneys and interns in Chicago, the authors show that scarce material resources and unclear expectations continue to give rise to the marginalization of this segment of the legal profession. The authors analyzed ideological, task, status, and material dimensions of attorneys' professional marginality. With no access to reform litigation, central to the legal aid “culture of significance” in the 1970s, present‐day poverty lawyers seek new ways to cope with marginality. The authors argue that these lawyers' coping strategies have many negative consequences. Thus, over time, poverty lawyers' deep engagement with clients, ideals of empowerment, and social justice orientation give way to emotional detachment, complacency, and an emphasis on “making do” within the constraints of the system. 相似文献
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Work-related stress in Australia: The effects of legislative interventions and the cost of treatment
Robert Guthrie Marina Ciccarelli Angela Babic 《International journal of law and psychiatry》2010,33(2):101-115
The Australian Institute of Health and Welfare data published in 2002 shows a continued rise in health care costs to the Australian community due to the growing number of people diagnosed with mental health disorders. Those mental health disorders may originate from a number of sources, including work and non-work-related factors. The so called work-related stress claims in all Australian jurisdictions are the most expensive form of workers compensation claim. In the most part this is due to the lengthy period of absence (duration) and complicated medical care which are characteristic of these claims. In Australia, in the last decade, attempts have been made to reduce the costs of compensable stress-related claims by imposing special legislative thresholds on such claims. This ‘back end’ approach to cost reduction has resulted in an array of legislative formula designed to exclude work-related stress claims. This article surveys the various legislative provisions dealing with work-related stress claims in Australia and provides an analysis of their effectiveness. A range of options are presented as alternatives to the exclusion of particular forms of work-related stress claims. The use of a corporate citizenship approach to the prevention and management of stress claims is also discussed as a proactive alternative to occupational safety and health legislative provisions and the workers compensation legislative exclusions. 相似文献
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Marina Bergen Jensen Carsten Nico Hjortsø Jasper Schipperijn Abdul‐Rahim Nik Kjell Nilsson 《公共行政管理与发展》2007,27(5):381-392
Twinning and its contribution to institutional capacity building in developing countries is the theme of an ongoing debate in Public Administration and Development. Unlike earlier contributions this article focuses on twinning in the context of research capacity enhancement. Using a 3 year Danish–Malaysian twinning research project as case our objective is to evaluate whether the general premises regarding a twinning project, as formulated by the Danish Development Cooperation Agency (Danida), appropriately support the twinning ambitions when the capacities in focus concern research. Besides institutional capacity building, twinning is expected to favour local ownership, involvement of the Danish resource base and continuing of cooperation after termination of funding. From 21 semi‐structured interviews with project participants it was found that although new research capacities had been gained, the prospects on continued cooperation are rather discouraging, both sides pointing to the lack of truly joint research experiences as the main reason. To care for this important incentive, the twinning premises are recommended to be modified to allow for the Northern resource base to advance its own research, and for Southern partner to demonstrate in‐house research capacities. Further, the North–South balance in project management needs to be more equal. This apart, the twinning premises appear sound. Copyright © 2007 John Wiley & Sons, Ltd. 相似文献