This article details the stability of Delta(9)-tetrahydrocannabinol (THC) in oral fluid during collection, extraction and storage. Oral fluid is being increasingly used as the specimen of choice for the detection of drug use in various applications. Studies to determine the extraction efficiency of THC from the collection buffer and stability under various laboratory storage conditions were carried out. THC was extracted from the collection pad and buffer with an average efficiency over 80% and was stable in Quantisal oral fluid extraction buffer when stored at refrigerated temperatures. Fluorescent lighting caused THC losses of over 50%, however the presence of the pad reduced the loss. In the dark, the loss of THC at room temperature was approximately 20% over 14 days. When stored with the serum separators in place, THC losses were significant. After 3 days, THC concentration was reduced by almost 30%, and after 14 days, 60% of the drug was lost and the losses were not concentration dependent. 相似文献
The present study investigates victim sexual orientation in a sample of 641 violent crime victims seeking emergency medical treatment at a public-sector hospital. Victim sexual orientation was examined as it: (a) varies by type of violent crime and demographic characteristics, (b) directly relates to psychological symptoms, and (c) moderates the relationship between victim and crime characteristics (i.e., victim gender, victim trauma history, and type of crime) and psychological symptoms (i.e., symptoms of acute stress, depression, panic, and general anxiety). Results showed that lesbian, gay, bisexual, and transgender (LGBT) victims were more likely to be victims of sexual assault. Heterosexual victims were more likely to be victims of general assault and shootings. LGBT victims demonstrated significantly higher levels of acute stress and general anxiety. Moreover, victim sexual orientation moderated the association of type of crime with experience of panic symptoms. Also, victim sexual orientation moderated the relation of victim trauma history and general anxiety symptoms. Results are discussed in relation to victimization prevalence rates, sexual prejudice theory, and assessment and treatment of violent crime victims. 相似文献
Looking back at the beginnings of academic research on terrorism just over 40 years ago, it is extraordinary to see that what was once a marginal subject for social science has developed into a full-fledged program of “terrorism studies.” In fact, recently a sociologist considered the subject of sufficient importance to write a doctoral dissertation and then a book on the “social construction” of the field (Stampnitzky 2013). This essay highlights some examples of the contributions scholars from different disciplines have made to understanding terrorism. There is no consensus on any general theoretical laws of terrorism (there is no equivalent of a democratic peace theory, for example), but researchers have defined key concepts and deepened explanations of cause, effect, and process.What follows identifies four interrelated areas of explanatory inquiry into terrorism that have emerged over years of research: the effectiveness of terrorism as a strategy of opposition, the determinants and consequences of counterterrorism policies, how campaigns or waves of terrorism end, and how analysis of terrorism can be situated in a broader theoretical framework rather than treated as a phenomenon sui generis. Particular emphasis is placed on studies that are comparative and/or that situate the specific case of terrorism in a general theoretical perspective. 相似文献
Using data from a diverse sample of 581 families living in predominantly low-income, rural communities, the current study sought to investigate the longitudinal associations among father-perpetrated intimate partner violence (IPV) and child-directed physical aggression perpetrated by the mother. The unique contributions of each of these types of family violence on children’s behavioral problems at school entry were also examined. Results confirm bidirectional associations between father-perpetrated IPV and maternal physical aggression directed toward the child, and indicate that both types of physical aggression contribute to child behavior problems at school entry. 相似文献
ABSTRACTDespite the notion that characterizes criminals as lacking virtues or character strengths, evidence shows that people who engage in antisocial and delinquent behavior are not dissimilar in possessing character strengths as compared to the general population. Character strengths may be used to either do ‘good’ or ‘wrong’; so that the question is, what situation does direct this use to either choice? This study hypothesized environmental predictability may influence a person using their character strengths to inhibit antisocial or delinquent behavior. Two samples were examined, one consisting of individuals convicted of a criminal offense, and the other composed of non-convicted participants. Individuals responded to a series of instruments targeting virtues and character strengths, antisocial and delinquent behaviors, and environmental predictability in their environment –inferred from life-history strategy. In both groups, virtues were negatively and significantly associated with antisocial/delinquent behavior. A further test of the moderating and mediating influence of environmental predictability showed that this environmental dimension modified the aforementioned relationship, decreasing the inhibitory influence of virtues on antisociality. This means that, in predictable contexts, possessing (or lacking) character strengths is not important to inhibiting antisocial behaviors; however, in unpredictable environments virtues are useful to prevent antisociality and delinquent behavior. 相似文献
The geographic footprint of contemporary warfare often challenges the existing understanding of the term ‘non-international armed conflict’, a term not defined in international humanitarian treaty law. This article examines whether the opening lines of Common Article 3 of the Geneva Conventions include a geographical requirement. Controversy surrounds this question which until recently has received little attention. The customary interpretation of Common Article 3 is that it has a geographical scope of application limited to non-international armed conflicts which take place exclusively within the borders of a single member state (internal armed conflict). The 2016 ICRC Commentaries to the First Geneva Conventions challenges this traditional view and argues in favour of a broader interpretation of the scope of application of Common Article 3. This re-interpretation recently has gained traction in scholarship. The ICRC’s position serves as a possible solution to prevent a lacuna in humanitarian protection in situations where conflicts fit neither the understanding of ‘international armed conflict’ nor ‘internal armed conflict’. By evaluating the merits of the arguments posed by the ICRC, the article assesses whether the phrase ‘conflict not of an international character’, as included in Common Article 3, conclusively limits its geographical application to an armed conflict occurring within the boundaries of a single state.