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Surprisingly little is known about oral sex experiences among emerging adults, including the motives behind their participation in this sexual activity. The current study examined the characteristics of emerging adults’ most recent oral sex experience. A total of 431 young people (M age = 21.7 years; 71.7% female) completed an on-line survey assessing their sexual history, context (partner type, co-occurring sexual behaviors), and motives (physical, emotional, goal attainment, and insecurity) for engaging in their most recent heterosexual oral sex interaction. The majority of oral sex encounters occurred within the context of a committed relationship and during an interaction that also included intercourse. Cunnilingus was rare unless reciprocated with fellatio. Overall, both males’ and females’ reports indicate that they were motivated to engage in oral sex by sexual desire and attraction to their partner, or to enhance an emotional connection with their partner. Insecurity and goal attainment motives were uncommon. Males reported more physical motives than did females, and females reported more emotional and insecurity motives than did males. The findings provide insights into youths’ oral sex experiences, and make clear how essential it is to understand the broader sexual and partnership context in which a given sexual activity occurs. These findings have implications for policies aimed at the development of effective sexual health education programs.  相似文献   
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The biofuel project is an agro-industrial development and politically contested policy process where governments increasingly become global actors. European Union (EU) biofuels policy rests upon arguments about societal benefits of three main kinds - namely, environmental protection (especially greenhouse gas savings), energy security and rural development, especially in the global South. Each argument involves optimistic assumptions about what the putative benefits mean and how they can be fulfilled. After examining those assumptions, we compare them with experiences in three countries - Germany, Brazil and Mozambique - which have various links to each other and to the EU through biofuels. In those case studies, there are fundamental contradictions between EU policy assumptions and practices in the real world, involving frictional encounters among biofuel promoters as well as with people adversely affected. Such contradictions may intensify with the future rise of biofuels and so warrant systematic attention.  相似文献   
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ABSTRACT

Callous and unemotional traits affect a subgroup of children and adolescents with severe conduct problems, characterized by lack of guilt, remorse, emotionality, and empathy, which trigger a chronic and severe antisocial pathway. One aim of the current study was to investigate if the results found by Dadds and his colleagues (Dadds et al., [2006]. Attention to the eyes and fear-recognition deficits in child psychopathy. British Journal of Psychiatry, 189, 280–281. doi:10.1192/bjp.bp.105.018150, [2008]. Reduced eye gaze explains ‘fear blindness’ in childhood psychopathic traits. Journal of the American Academy of Child & Adolescent Psychiatry, 47(4), 455–463. doi:10.1097/CHI.0b013e31816407f1) in the processing of the eye region of a fearful face in subjects with high levels of callous–unemotional traits could be replicated using event-related potentials (ERPs). From a sample of 48 male adolescent offenders, those who presented high CU (HCU) scores and low CU (LCU) scores were selected. Psychophysiological results show that HCU traits are associated with deficits in processing the eye region of fearful faces. These findings are discussed below.  相似文献   
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Internationally shared basins supply 60 % of global freshwater supply, are home to about 1/3 of the world’s population, and are focal points for interstate conflict and, as importantly, cooperation. To manage these waters, states have developed a large set of formal treaties, but until now these treaties have been difficult to access and systematically assess. This paper presents and makes publicly available the assembly and organization of the largest known collection of transboundary water agreements in existence. We apply for the first time a “lineage” concept to differentiate between independent agreements and groups of legally related texts, spatially reference the texts to a global basin database, and identify agreement purposes, goals and a variety of content areas. The 688 agreements identified were signed between 1820 and 2007 and constitute 250 independent treaties which apply to 113 basins. While the scope and content varies widely, these treaties nominally govern almost 70 % of the world’s transboundary basin area. In terms of content, treaties have shifted from an earlier focus on regulation and development of water resources to the management of resources and the setting of frameworks for that management. While “traditional” issues such as hydropower, water allocation and irrigation are still important, the environment is now the most commonly mentioned issue in treaty texts. Treaties are also increasingly likely to include data and information sharing provisions, have conflict resolution mechanisms, and include mechanisms for participation beyond traditional nation-state actors. Generalizing, treaties have become more comprehensive over time, both in the issues they address and the tools they use to manage those issues cooperatively.  相似文献   
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Chest skeletal injuries are the most frequent complications of external chest massage (ECM) during cardiopulmonary resuscitation, but heart and great vessels lacerations that are indeed very rare. We report the case of a 35‐year‐old workman who collapsed and underwent ECM by his co‐workers for almost 30 min. At autopsy, no external injuries, fractures or bruises of the ribs or sternum, were observed. A hemopericardium with a rupture of the heart was found, with no signs of pre‐existent cardiac disease. Bruises of thoracic aortic wall, lung petechiae, a contusion of the liver, and bruises of lumbar muscles were found. The cause of death was due to sudden cardiac death with an extensive cardiac rupture. This is an unusual report of massive heart damage without any skeletal or muscle chest injuries, secondary to cardiopulmonary resuscitation. This kind of cardiac lesions may be considered when thoracic–abdominal trauma, or medical history, is unclear.  相似文献   
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Allele frequencies for 17 STRs, together with some parameters of forensic interest, were estimated in a sample of 835 unrelated individuals born in Tuscany, an Italian region. These data were compared with Italian, Chinese, Kosovo Albanian, Romanian and Tunisian populations, strongly represented in this area. No significant differences in single loci were detected, except for Chinese in comparison with all the other populations.  相似文献   
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