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231.
232.
The postmortem diagnosis of shaken baby syndrome, a severe form of child abuse, may be difficult, especially when no other visible signs of significant trauma are obvious. An important finding in shaken baby syndrome is subdural haemorrhage, typically originating from ruptured cerebral bridging veins. Since these are difficult to detect at autopsy, we have developed a special postmortem computed tomographic (PMCT) method to demonstrate the intracranial vein system in infants. This method is minimally invasive and can be carried out conveniently and quickly on clinical computed tomography (CT) systems. Firstly, a precontrast CT is made of the infant's head, to document the original state. Secondly, contrast fluid is injected manually via fontanel puncture into the superior sagittal sinus, followed by a repeat CT scan. This allows the depiction of even very small vessels of the deep and superficial cerebral veins, especially the bridging veins, without damaging them. Ruptures appear as extravasation of contrast medium, which helps to locate them at autopsy and examine them histologically, whenever necessary. 相似文献
233.
Testa M 《Journal of interpersonal violence》2004,19(12):1494-1505
Literature addressing the relationship between substance use and physical and sexual violence against women is reviewed briefly. There is substantial evidence of a relationship between men's substance use and perpetration of physical violence, some evidence of a relationship between women's substance use and experiences of sexual aggression, but weak evidence that men's substance use contributes to sexual aggression or that women's substance use contributes to their physical victimization. Understanding the mechanisms underlying the relationship between substance use and violence relationship will be facilitated by narrowing the scope of research questions to identify for whom there is a relationship and under what circumstances. 相似文献
234.
Josep M. Colomer 《Political studies》2005,53(1):1-21
This article presents, discusses and tests the hypothesis that it is the number of parties that can explain the choice of electoral systems, rather than the other way around. Already-existing political parties tend to choose electoral systems that, rather than generate new party systems by themselves, will crystallize, consolidate or reinforce previously existing party configurations. A general model develops the argument and presents the concept of 'behavioral-institutional equilibrium' to account for the relation between electoral systems and party systems. The most comprehensive dataset and test of these notions to date, encompassing 219 elections in 87 countries since the 19th century, are presented. The analysis gives strong support to the hypotheses that political party configurations dominated by a few parties tend to establish majority rule electoral systems, while multi-party systems already existed before the introduction of proportional representation. It also offers the new theoretical proposition that strategic party choice of electoral systems leads to a general trend toward proportional representation over time. 相似文献
235.
This paper evaluates the use of climate-based information in drought mitigation in Ceará, Northeast Brazil. It examines two policies – a seed-distribution program (Hora de Plantar) and the Emergency Drought-Relief Program – that use climate information produced by FUNCEME (Cearás Foundation for Meteorological and Hydrological Resources) to implement drought planning. It argues that, in politically charged policy-making environments, the use of climate forecast information may go beyond its problem-solving function to influence broader issues of accountability and democratization. In Cearás politically charged environment, technocrats rely on scientific information about climate to insulate policy-making from both political meddling and public accountability. However, insulation afforded by the use of climate information has played different roles in the policy areas examined in this study. While in drought emergency-relief planning the use of climate information critically contributed to the democratization of policy implementation, in agricultural planning, it worked towards further insulating decision-making from public accountability and client participation. Thus, the use of climate information is context-dependent, that is, the distribution of costs and benefits associated with information use in policymaking depends on the social, political, and cultural context in which information producers and users work. Moreover, climate information can be used in ways – positive or negative – significantly different from the use that information producers intended. 相似文献
236.
Bezerra de Menezes LM Volpato MC Rosalen PL Cury JA 《Forensic science international》2003,137(2-3):209-214
The use of bone as a biomarker for chronic and acute exposure to fluoride salts has been suggested, but there are no data published about its use to evaluate lethal intoxication. One hundred and sixty rats were divided into eight groups that received a single oral intubation dose from 0 (control) to 90 mg F/kg as NaF. The animals' time of death was recorded and their femurs were removed for fluoride analysis. Acid-soluble fluoride was determined in the whole bone and on the surface (periosteal), using an ion specific electrode. The data showed a statistically significant relationship between fluoride dose and the number of deaths (P<0.0001). A statistically significant relationship was also found between fluoride dose and fluoride concentration ([F]) in either the whole femur (P<0.0017), on the surface (P<0.0001) or for the ratio periosteal [F]/whole [F] (P<0.0001). However, the [F] on the femur surface was more closely correlated with mortality than that in the whole bone, showing statistically significant differences among the lethal doses and control (P<0.05). The data suggest that the ratio [F] periosteal bone/[F] whole bone, is a biomarker for acute fluoride toxicity. 相似文献
237.
Sánchez-Diz P Gusmão L Beleza S Benítez-Páez A Castro A García O Solla LP Geada H Martín P Martínez-Jarreta B de Fátima Pinheiro M Raimondi E Silva de la Fuente SM Vide MC Whittle MR Zarrabeitia MT Carracedo A Amorim A;GEP-ISFG 《Forensic science international》2003,135(2):158-162
A collaborative exercise was carried out by the Spanish and Portuguese ISFG Working Group (GEP-ISFG) in order to evaluate the performance of two Y-chromosome STR PCR tetraplexes, which include the loci DYS461, GATA C4, DYS437 and DYS438 (GEPY I), and DYS460, GATA A10, GATA H4 and DYS439 (GEPY II). The participating laboratories were asked to type three samples for the eight markers, using a specific amplification protocol. In addition, two control samples, with known haplotypes, were provided. The results obtained by the 13 different participating laboratories were identical, except for two laboratories that failed to type correctly the same two samples for GATA C4. By sequence analyses, two different GATA C4 allele structures were found. One control sample (allele 21) and two questioned samples (allele 22, correctly typed by all the laboratories, and allele 25) presented the following repeat structure: (TCTA)4(TGTA)2(TCTA)2(TGTA)2(TCTA)n, but different from the one found for allele 26 in one sample included in this exercise, as well as in the second control sample (allele 23), namely (TCTA)4(TGTA)2(TCTA)2(TGTA)2(TCTA)2(TGTA)2(TCTA)n. The collaborative exercise results proved that both Y-tetraplexes produce good amplification results, with the advantage of being efficiently typed using different separation and detection methodologies. However, since GATA C4 repeat presents a complex structure, with alleles differing in sequence structure, efficient denaturing conditions should be followed in order to avoid typing errors due to sizing problems. 相似文献
238.
Calacal GC De Ungria MC Delfin FC Lara MC Magtanong DL Fortun R 《The American journal of forensic medicine and pathology》2003,24(2):148-152
We describe here our collaborative efforts in identifying 2 fatalities of a fire disaster by using a variety of identification techniques. Postmortem findings in both cases were reinforced using Short Tandem Repeat (STR) DNA technology to establish with a high degree of certainty the identities of 2 child victims. STR markers used in the present study include HUMAMEL, HUMCSFIPO, HUMTHO1, HUMvWA, HUMFES/FPS, HUMF13A01, HUMFOLP23, D8S3O6, HUMFGA, and HUMTPOX. Unambiguous identification was made possible through matching DNA profiles generated from skeletal remains with those from umbilical tissues. These tissues were kept by their mothers in accordance with a Philippine tradition and were submitted for DNA analysis. Of the DNA profiles generated from exhumed bone samples of 21 child victims, comparison with the genetic profiles of children A and B obtained from umbilical tissues showed consistent DNA matches with remains 1756 and 1758, respectively. 相似文献
239.
Episodes of husband-to-wife violence in which the husband consumed alcohol were compared with episodes of husband-to-wife violence, reported by the same individuals, in which the husband was not drinking. Among this community sample of newlyweds, wife reports, but not husband reports, indicated that violent episodes in which the husband was drinking included more acts of violence and were more likely to involve severe violence. Both wife and husband reports indicated that wives were more likely to be physically aggressive in husband drinking episodes compared to sober episodes. However, whereas wives reported that their aggressive behavior was a response to husband aggression, husbands reported that wives were more likely to initiate violence in these episodes. Violent episodes that include alcohol may be more severe and more mutually violent than sober episodes. Discrepancies between husband and wife reports may reflect differences in recall or self-serving biases. 相似文献
240.
Maria Nedeva Luke Georghiou Peter Halfpenny 《The Journal of Technology Transfer》1999,24(2-3):139-147
This paper examines the role of industry in the support of academic infrastructure, in particular university research equipment. Although the United Kingdom provides the framework for discussion the described situation should be a familiar one in most countries. The argument is constructed around the perceptions, opinions and positions of universities, government and industry. Drawing on results from a survey of academic departments the equipment situation at UK universities is outlined. Following that the position of the Government attempting to attract industrial support for university research equipment is discussed. And finally, industry's views of where the demarcation between public and private responsibility lies are presented. 相似文献