文学审美：儿童文学经典生成的主要因素

本文从文学审美的维度入手,认为文学审美是现当代中国儿童文学经典生成的主要因素之一。文学经典的生成是＂内部＂要素和＂外部＂力量共同作用的结果,是文学审美活动的实践形态、知识建构和价值指向相互作用、相互依存的综合过程,并且在这一过程中始终体现和凝聚着审美主体对于审美活动的主体性,凝聚着作为审美客体与对象的经典文本的审美经验、社会历史和人文内涵。     

AN EVALUATION OF SUPERVISED ACCESS III

Although supervised access has become a more frequently used option within the custody and access domain over the last 10 years, no empirical literature has examined supervised access from the standpoint of its effect on the legal system. As part of a large-scale evaluation of Ontorio's Supervised Access Pilot Project, the present study sought the perceptions of the legal community and the courts regarding supervised access centers. A total of 14 lawyers and 13 judges participated in semistructured telephone interviews concerning supervised access cases in general, the function and impact of the supervised access program in their community, and their satisfaction with and recommendations regarding the center. Both lawyers and judges expressed high levels of satisfaction with the centers and believed that their availability resulted in savings to the legal system and reductions in hostility and conflict between parents. Implications and limitations of the study are discussed.     

Methods for ensuring the highest DNA concentration and yield in future and retrospective trace DNA extracts

In forensic laboratories, increased extraction efficiency of trace evidence is paramount because analytical success is intrinsically dependent on the quantity of DNA recovered. Moreover, highly concentrated nucleic acids are vital for effective downstream analysis and high quality results. This study investigated the efficiency of extraction with the Qiagen® QIAamp® DNA Investigator kit, and explored improvements to the methodology that would maximise the recovery of low concentration forensic samples. Controlled amounts of starting cellular material were used to mimic trace (or low level) DNA deposits prior to DNA extraction with the Investigator kit. Addition of the provided carrier RNA along with conducting two successive elutions of 50 µL improved the net recovery of DNA to 95%. Concentration with centrifugal filters post-extraction were able to concentrate DNA but a large net loss was observed. For the concentration of historic, retrospectively extracted DNA, centrifugal methods are able to concentrate DNA extracts previously too dilute for analysis. These concentrated volumes, however are small, allowing for minimal downstream analysis attempts before the sample is exhausted.     

Transfer of nitroglycerine to hands during contact with commercial explosives

The techniques of thin-layer chromatography, gas chromatography with electron capture detection, and gas chromatography/mass spectrometry were used to analyze hand swab extracts for the presence of nitroglycerine. Both the amount of nitroglycerine transferred to the hands after handling commercial explosives and its persistence were measured. Gas chromatography-electron capture detection was found to be the most accurate and sensitive technique for making such determinations, especially if the extract was partially purified by thin-layer chromatography prior to analysis. The lowest limit of detection was 10 ng of nitroglycerine, and residues could be detected over 20 h after handling the raw explosive.     

An unusual case of sudden unexpected death: postmortem investigation and biomechanical analysis of the cervical spine

A naked man died under peculiar circumstances and the postmortem examination revealed unexpected lesions in the cervical spine. Investigations of the cervical spine (computed tomography, magnetic resonance imaging, and histological examination) showed that a piece of bone was torn of the anterior part of vertebra C6 and that there was fresh bleeding in the surrounding tissue. The cause of death remained unclear but was most likely cardiac arrhythmia initiated by beta-2 agonist inhalation due to an acute asthmatic attack. Data from biomechanical investigation using finite element analysis supported the conclusion that the cervical spine injury was secondary to impact during falling as a consequence of the cardiac arrhythmia.