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Estrada Pedro R. Torres Bagatella Juan C. Montero Ferrel Carlos Vázquez Mariño Sylvia C. García 《Crime, Law and Social Change》2021,76(4):387-407
Crime, Law and Social Change - Given its vast border with the United States, Mexico is a strategic trade and economic development region, which creates significant challenges in combating crime and... 相似文献
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Carlos A. Valdez PhD Alexander K. Vu BSc Saphon Hok PhD Armando Alcaraz 《Journal of forensic sciences》2023,68(6):1923-1931
The benzylation of three low molecular weight N,N-disubstituted ethanolamines related to chemical warfare agents (CWAs) to furnish derivatives with improved gas chromatography-mass spectrometry (GC-MS) profiles is described. Due to their low molecular weight and polar nature, N,N-disubstituted ethanolamines are notoriously difficult to detect by routine GC-MS analyses during Organisation for the Prohibition of Chemical Weapons (OPCW) proficiency tests (PTs), particularly in scenarios when they are present at low levels (~1–10 ppm) amidst more abundant interferences. Our studies revealed that the optimal derivatization conditions involved the treatment of the ethanolamine with benzyl bromide in the presence of an inorganic base (e.g., Na2CO3) in dichloromethane at 55°C for 2 h. This optimized set of conditions was then successfully applied to the derivatization of N,N-dimethylethanolamine, N,N-diethylethanolamine and N,N-diisopropylethanolamine present separately at 1 and 10 μg/mL concentrations in a glycerol-rich matrix sample featured in the 48th OPCW PT. The benzylated derivatives of the three ethanolamines possessed retention times long enough to clear the massive glycerol-containing matrix interferences. The protocol herein is introduced as an alternative method for derivatization of these CWA and pharmaceutically important species and should find broad applicability in laboratories where routine forensic analysis is carried out. 相似文献
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Bare JB Abramowsky CR Denton TD Dykes FD Shehata BM 《The American journal of forensic medicine and pathology》2008,29(3):271-273
Congenital diaphragmatic hernia (CDH) is a defect seen in approximately 1 in 3500 live births. A complication of CDH is the herniation of abdominal contents into the chest cavity through the defect, which may prevent normal intrauterine development of the lungs. The resultant pulmonary hypoplasia and pulmonary hypertension causes respiratory distress in the newborn, usually requiring some form of intervention before the defect is surgically corrected (Embryology for Surgeons. Baltimore, MD: Williams & Wilkins; 1994:491-539). Extracorporeal membrane oxygenation, which involves cannulation of the superior vena cava (SVC), is often used to manage these infants. However, the mediastinal shift that often occurs with CDH can cause an abnormal acute angulation of the SVC, which during cannulation can result in trauma and possible perforation of the SVC. We present 2 autopsy cases where the infants accidentally died as a result of extracorporeal membrane oxygenation cannulation. 相似文献
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Beyond deterrent enforcement styles: Behavioural intuitions of Chinese environmental law enforcement agents in a context of challenging inspections 下载免费PDF全文
This article extends the study of regulatory enforcement on three levels. First, it separates enforcement style elements during inspections and sanction decision‐making work, creating a more realistic measurement. Second, it focuses on how these elements function in a context where it is hard in practice to achieve deterrence. Third, it assesses how agents view the effectiveness of combinations of style elements in such a context. To do so, it uses survey and interview data with street‐level environmental officials in Guangzhou, China. It finds that the agents studied practise enforcement that goes beyond deterrence and uses education and persuasion more effectively. It finds that the behavioural assumptions of these agents are to a large extent in line with the available regulatory literature, although agents are very unlikely to have consulted such studies. Therefore, the article concludes that law enforcement agents can develop nuanced and appropriate behavioural intuitions through their everyday work experiences. 相似文献
239.
Despite the increasing volume and significance of research on nonprofit advocacy, most studies have focused on the phenomenon only in Western countries. This article expands the scope of the literature by examining the advocacy activities of nongovernmental organizations (NGOs) in authoritarian China. This article focuses on three aspects of advocacy behavior: advocacy investment and use of insider and outsider tactics. Data analyses of an original nationwide survey of 267 environmental NGOs and semistructured interviews with 30 highlight how resource and institutional factors—government funding, government affiliation, foundation funding, and peer collaborations—shape NGO advocacy in China. The findings also suggest ways in which institutional actors may enhance NGOs’ capacity for policy advocacy. 相似文献
240.
Rayana A. Costa M.Sc. Nayara A. dos Santos M.Sc. Thayná S. M. Corrêa B.Sc. Nathália L. P. Wyatt B.Sc. Carlos A. Chamoun Ph.D. Maria T. W. D. Carneiro Ph.D. Wanderson Romão Ph.D. 《Journal of forensic sciences》2020,65(6):2188-2193
The concentrations of lead (Pb), barium (Ba), and antimony (Sb), characteristic of GSR, were determined in soil sediments and immature (larvae) of cadaveric flies of the family Calliphoridae, by inductively coupled plasma mass spectrometry (ICP-MS). This research refers to a case study from two real crime scenes in which the corpses were in an advanced state of decomposition. In case 1, the victim had holes similar to gunshot wounds, and in case 2, there was no evidence of perforations in the corpse. Soil sediment collection was performed at three different points of the terrain, at a minimum distance of 10 m from the corpse, for cases 1 and 2. In relation to the collection of immatures, larvae were collected in regions of the mouth, nose, and orifices similar to the entry of firearms projectile into the body, for case 1, and collection of larvae and pupae, located on the body and underneath it, for case 2. It was possible to detect and quantify the three elements of interest (Pb, Ba, and Sb) by ICP-MS in both sediment and cadaveric larvae. Concentrations of 4.44, 8.74, and 0.08 μg/g were obtained for Pb, Ba, and Sb, respectively, in the soil for case 1. For the case 2, the concentrations in Pb, Ba, and Sb were from 16.34 to 26.02 μg/g; from 32.64 to 57.97 μg/g and from 0.042 to 0.30 μg/g, respectively. In the larvae, Pb, Ba, and Sb were quantified in cases 1 and 2 with a concentration of 6.28 and 1.78 μg/g for Pb, 1.49 and 2.94 μg/g for Ba, 0.50 μg/g and <LD for Sb, respectively. These new results present the detection of characteristic elements of GSR in cadaveric larvae in humans in a real crime scene, besides highlighting the importance of the study of immature flies, using the ICP-MS technique in forensic analysis. 相似文献