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281.
Luminescent visualization of latent fingerprints by direct reaction with a lanthanide shift reagent.
The utilization of the lanthanide shift reagent tris (6,6,7,7,8,8,8-heptafluoro-2,2-dimethyl-3,5-octanedionato) europium (III) [Eu(fod)3] as a simple one-step reagent for the luminescent visualization of latent fingerprints has been investigated. UV excitation of Eu(fod)3-treated prints, achieved by using a hand-held UV lamp or a Polilight, results in an orange emission at 614 nm. Time-resolved imaging is not required for visualization. Visualization of latent fingerprints on paper under the conditions used, although good, was found to be inferior to that obtained by standard DFO (1,8-diazafluoren-9-one) treatment, whereas visualization of prints obtained on aluminum drink cans and galvanized iron proved superior to that obtained by Superglue/panacryl treatment. Eu(fod)3 treatment can also be used first without compromising subsequent ninhydrin or DFO treatment, making it a 'nothing-to-lose" reagent. 相似文献
282.
Characterization of deletions in the DYS385 flanking region and null alleles associated with AZFc microdeletions in Koreans 总被引:1,自引:0,他引:1
Eight DYS385 allele size discrepancies and six DYS448 null types were detected among 708 Korean men when results of three in-house multiplex short tandem repeat (STR) systems were compared. The systems included both ordinary and reduced size amplicons. Sequence analysis revealed deletion mutations at two sites upstream of the DYS385 core repeats and deletion of the entire DYS448 locus. At DYS385, allele size differences were one or two repeats and were dependent on the primer set used for polymerase chain reaction (PCR) amplification. Location of the primer target sequence in a flanking region of the STR, distal or proximal to the deletion, determined allele size. Two widely used commercial kits amplify DYS385 so as to include the mutable sites. Arrangement analysis of sequence tagged sites demonstrated that the deletion patterns at DYS448 (and DYS464) were associated with arrangements of the azoospermia factor c gene (AZFc). The DYS448 deletion appears relatively frequent in Asians. 相似文献
283.
Marcus BJ Kaplan J Collins KA 《The American journal of forensic medicine and pathology》2008,29(3):255-259
Ludwig angina is a rapidly progressing submaxillary, submandibular, and sublingual necrotizing cellulitis of the floor of the mouth that can have lethal consequences due to airway obstruction. Various aerobic and anaerobic microorganisms, and less often fungi, have been implicated to cause Ludwig angina, including oral flora such as streptococci and staphylococci. Early recognition and the use of parenteral antibiotics can prevent mortality and morbidity. We report a case of a 25-year-old white man who was admitted to the hospital by his dentist after being diagnosed with Ludwig angina secondary to periodontal abscesses involving teeth #17 and #32. Although antibiotics were administered, while in the hospital, the decedent had difficulty swallowing and was drooling. He suddenly began to have seizure-like activity thought to be anoxic myoclonus. The decedent was aggressively resuscitated and taken to the operating room for neck exploration and a tracheostomy. Neck exploration revealed severe necrotizing acute inflammation of the deep soft tissues and musculature of the neck. He remained on life support for 7 days until he was declared brain dead. Ludwig angina is a progressive cellulitis that often results in death by asphyxia. Ludwig angina can be complicated by subsequent deep neck infection. The underlying etiologies and common scenarios are examined, and significant autopsy findings and dissecting procedures are discussed. The pathophysiology of Ludwig angina is studied with a review of the current literature. 相似文献
284.
Battered women's reasons for staying with or leaving their male partners are varied and complex. Using data from the Domestic Violence Experience in Omaha, Nebraska, a discrete-time hazard model was employed to examine a woman's decision based on four factors: financial independence, witness of parental violence, psychological factors, and the police response to the domestic violence call. Findings regarding the first three factors are consistent with previous findings. However, a negative police response did not deter a woman from leaving, which is a different finding from previous studies. 相似文献
285.
Kim Smith Ph.D. 《Journal of forensic sciences》2019,64(6):1884-1888
In clinical and most forensic evaluations, “diagnosis” connotes the expectation of a DSM‐5 or ICD‐10 formally labeled mental condition. When the task is to evaluate the security risk a person's psychological makeup presents to an institution, such a molar diagnosis can blind the clinician and elevate the risk to a security agency. When “diagnosis” connotes achieving an understanding of a person's behavior that has raised security concerns, then a different conceptualization of the diagnostic process is required. Unlike the clinical situation, the evaluation is not being performed to benefit the person but for the purpose of assessing risk to an agency. The differences this introduces involve every aspect of the evaluation and changes the type of diagnosis expected. Not appreciating these differences can cause the clinician to fail in the task of assessing psychological tendencies that affect national security. 相似文献
286.
Scholars of alliance politics have ignored a potentially important factor that shapes foreign policy: the age structure of a state. In this article, we argue that an alliance member is more likely to terminate the alliance in violation of the terms when the state’s youth ratio is high. The demographic pressure of a high youth ratio raises potential for political instability domestically, which in turn increases the risk of radical foreign policy changes. We demonstrate the effects of a state’s age structure on its alliance policy by examining alliance termination by violation from 1950 to 2000. Through quantitative analysis, we find that youth ratio is a strong and significant predictor of alliance abrogation. A brief examination of several examples illustrates two paths by which the pressure created by a high youth ratio contributes to political instability and results in alliance abrogation—leadership change that brings about a new foreign policy and appeasement of the population through abrogation of an unpopular alliance. 相似文献
287.
Do economic sanctions serve international signaling purposes? A fully structural statistical model that employs a signaling game as a statistical model is used to investigate the existence of signaling effects of sanctions. Estimation results suggest that sanctions fail to work as a costly signal. The cheapness of sanctions prevents a target state from being able to distinguish a resolute sender state from a sender who is bluffing. When sanctions are imposed, a target rarely updates its initial evaluation of the sender state’s resolve, much less than when a military challenge is observed. 相似文献
288.
289.
What can representations of women's ‘caring consumption’ (Thompson 1996) reveal about broad cultural understandings of the nature of motherhood? We study Canadian television advertisements to gain insight into the production of cultural schemas and the reproduction of beliefs about gender and motherhood. Employing an inductive qualitative analysis of portrayals of mothers and women who are not depicted as mothers, we find that the defining feature of mothers' consumption is a unidimensional depiction of control and caring for others, presented as self-evidently gratifying and fulfilling, in the absence of competing consumption goals. Mothers' identity emerges solely from successful consumer choices that benefit others. Such unidimensional representations of consumption stand in contrast to the consumption of women who are not depicted as mothers, who are found to engage in hyperbolic and indulgent consumption targeted towards self-gratification. We thus provide novel empirical data which show that depictions of consumption in mothers and in women not depicted as mothers are extreme in nature. Our findings provide support for, and elaborate on, the concept of ‘caring consumption’ by helping to make sense of media representations appearing within the conjunction of the contemporary marketing context of hyperconsumption, and the parenting/gender context of intensive mothering. By examining extreme consumption in television advertisements, we gain insight into features of maternal consumption ideals that may not be observable in everyday instantiations, such as the lack of mothers' consumption for self-benefit. 相似文献
290.