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221.
Andersson K Jalava K Lock E Finnon Y Huizer H Kaa E Lopes A Poortman-van der Meer A Cole MD Dahlén J Sippola E 《Forensic science international》2007,169(1):50-63
This study focused on gas chromatographic analysis of target compounds found in illicit amphetamine synthesised by the Leuckart reaction, reductive amination of benzyl methyl ketone, and the nitrostyrene route. The analytical method was investigated and optimised with respect to introduction of amphetamine samples into the gas chromatograph and separation and detection of the target substances. Sample introduction using split and splitless injection was tested at different injector temperatures, and their ability to transfer the target compounds to the GC column was evaluated using cold on column injection as a reference. Taking the results from both techniques into consideration a temperature of 250 degrees C was considered to be the best compromise. The most efficient separation was achieved with a DB-35MS capillary column (35% diphenyl 65% dimethyl silicone; 30 m x 0.25 mm, d(f) 0.25 microm) and an oven temperature program that started at 90 degrees C (1 min) and was increased by 8 degrees C/min to 300 degrees C (10 min). Reproducibility, repeatability, linearity, and limits of determination for the flame ionisation detector (FID), nitrogen phosphorous detector (NPD), and mass spectrometry (MS) in scan mode and selected ion monitoring (SIM) mode were evaluated. In addition, selectivity was studied applying FID and MS in both scan and SIM mode. It was found that reproducibility, repeatability, and limits of determination were similar for FID, NPD, and MS in scan mode. Moreover, the linearity was better when applying FID or NPD whereas the selectivity was better when utilising the MS. Finally, the introduction of target compounds to the GC column when applying injection volumes of 0.2 microl, 1 microl, 2 microl, and 4 microl with splitless injection respectively 1 microl with split injection (split ratio, 1:40) were compared. It was demonstrated that splitless injections of 1 microl, 2 microl, and 4 microl could be employed in the developed method, while split injection and splitless injections of 0.2 microl should be avoided. 相似文献
222.
Rape resistance trainings need to prepare women to recognize and resist sexual assault across a range of experiences and contexts. To help address this need, this research used an investigation of 415 college women who completed a survey about their situational responding to an experience of acquaintance sexual assault. A previously established person-centered analysis model of four distinct risk and protective factor profiles was used to investigate the variability in women's responding. The profiling factors included women's prior victimization, alcohol consumption, relationship expectancies of the assailant, and assertive precautionary habits. Multivariate ANOVA was used to test for differences among the four profile groups on their cognitive, emotional, and behavioral responding. Results showed that the profile groups significantly differed in their assault responses. The findings highlight the utility of holistic, multivariate analyses for understanding women's sexual assault responses and help inform tailored resistance and empowerment trainings. 相似文献
223.
Kanacri BP Rosa V Di Giunta L 《Journal of prevention & intervention in the community》2012,40(1):8-21
In recent decades, given new forms of political participation, the involvement of young people in the civic domain begins to be a focus of many studies. The present study examined the role of personality traits and personal values in the prediction of civic engagement (CE) in Italian youth ranging in age from 19 to 29 years old involved in an ongoing longitudinal study. The multidimensionality of a scale tapping CE has been demonstrated with the examination of confirmatory factor analysis. Structural equation modeling corroborated a mediational model in which benevolence fully mediated the relationship of the traits of agreeableness and openness with civic associationism, whereas power fully mediated the relationship of the traits of agreeableness and openness with political associationism. In this mediational model men reported higher levels of power than women, whereas women reported higher levels of agreeableness and openness traits. Since basic personal traits have been identified as the root of any behavioral tendency and values have been recognized as the more flexible and changeable variables, future interventions aimed to foster CE in youth could be designed considering the strength relationship between the examined dimensions in the present study. 相似文献
224.
Danielle Watson Francis D. Boateng Nathan Pino Paula Morgan 《Police Practice and Research》2018,19(5):458-471
Police legitimacy is crucial to the maintenance of law and order in any society. In communities marred by high instances of societal manifestations of dysfunction, tenuous legislative frameworks, poradic implementation, and dismantling of crime fighting strategies, there is greater emphasis placed on quick-fix crime fighting solutions and policing initiatives. The focus is placed primarily on what police officers are mandated to do as opposed to practical applications underscored by systematic hindrances to professional practice. Examining interview data from a pilot study on police fear of crime in Trinidad and Tobago, this study is intended to explore connections between police perceptions about personal powerlessness and the exercise of state power. Here we examine the discourses of N = 12 senior police officers with an average of 22.83 years of service to attain a preliminary understanding of instances presenting a conflict between professional practice and perceptions of self-preservation. The findings suggest a need for officers’ constant consideration of the repercussions of professional competence and the need for continued navigation of blurred constructions of police legitimacy and subjective determinants of criminality against a backdrop of acknowledged personal powerlessness. 相似文献
225.
Sander Chan Paula Ellinger Oscar Widerberg 《International Environmental Agreements: Politics, Law and Economics》2018,18(1):135-152
The importance of actions by non-state and sub-national actors (e.g., companies and cities) is increasingly recognized, because current governmental commitments are insufficient to limit the increase of global temperatures to 1.5 °C. Orchestration, the alignment between ‘orchestrator’ (e.g., international organizations and governments) and ‘intermediaries’ (e.g., city networks and partnerships), could harness additional contributions by building catalytic linkages and by enabling a growing number of actions. Although most orchestration efforts have been made in the context of international climate negotiations, regional and national orchestration could be useful by contributing to the implementation of national commitments, and by inspiring greater ambition. We investigate whether and how regional and national orchestrators respond to shortfalls in international orchestration. Using insights from a comparative study, we provide an early indication of the catalytic potential of orchestration in Latin America, Europe, India, Argentina, and Sweden. We find considerable impacts of global level orchestration on the emergence of these initiatives, however orchestrators do not simply copy other efforts; they emphasize different catalytic linkages, including the engagement of underrepresented actors; implementation; and, the provision of ideational and material support. Catalytic linkages in a complex landscape with multiple orchestrators could sometimes be improved through coordination. Given the enormous scale of transformation needed, a focus on scale may seem natural. However, for socially just outcomes, orchestrators need to resist a sole focus on scale, and also aim at experimental and small-scale actions, which may not lead to immediate large-scale impacts but which may prove crucial in longer-term transformations. 相似文献
226.
Belisa M. Lunas M.Sc. Michele C. de Paula Ph.D. Kamylla B. Michelutti Ph.D. Sidnei E. Lima‐Junior Ph.D. William F. Antonialli‐Junior Ph.D. Claudia A. L. Cardoso Ph.D. 《Journal of forensic sciences》2019,64(6):1720-1725
One of the most important contributions of forensic entomology is to assist criminal expertise to determine the postmortem interval, which depends on the duration of the immature stages of insects of forensic interest. On the other hand, the time of development of the different stages varies according to the species; therefore, its identification is essential. Currently, few studies have investigated the use of cuticular hydrocarbons, and none regarding fatty acids, as complementary taxonomic tools to expedite species identification. Therefore, we evaluated whether cuticular hydrocarbons together with fatty acids of eggs of flies of the family Calliphoridae, main group of forensic interest, can be used to distinguish species. The analyses were performed by chromatographic techniques. The results show that there are significant differences between the composition of cuticular hydrocarbons and fatty acids between species and, therefore, they can be used to provide a complementary taxonomic tool to expedite the forensic expertise. 相似文献
227.
Paula Haara Esa Reunanen Janne Kivivuori Matti Näsi 《Journal of Scandinavian Studies in Criminology & Crime Prevention》2019,20(1):73-89
Due to drastic changes in the contemporary media environment, criminology needs to examine how the experience of violence is shaped by the emerging cross-media context. We conducted a qualitative focus group study (N = 24) to explore conversations about mediated violence experiences and crime media literacy in Finland, which manifests as an advanced state of cross-media transformation. We found that the cross-media context affects how information on violence and crime is received, as people combine and contrast bits of information from traditional media, social media, alternative media, and direct personal and local knowledge. This constellation of information sources is a fertile ground for distrust, as people challenge the self-regulatory limits of ‘old media’ in reporting on crime and construe such limits as ‘downplaying’ violence. Consistent with the general ‘media-critical’ frame of mind, the interviewees saw crime news media as fear-inducing. Through a focus group of older participants (in addition to three groups of younger participants), we observed generational differences that reflect the dimension of change from the old monolithic media environment to the cross-media context. The new context blurs the distinction between media content and social network-based reception and is thus a game changer for media criminology. 相似文献
228.
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230.
Aalberg L Andersson K Bertler C Borén H Cole MD Dahlén J Finnon Y Huizer H Jalava K Kaa E Lock E Lopes A Poortman-van der Meer A Sippola E 《Forensic science international》2005,149(2-3):219-229
Reference material was synthesised for 21 substances that are frequently present as synthetic impurities, i.e. by-products, in illicitly produced amphetamine. Each of these substances is a typical by-product for at least one of the three approaches most often used to synthesise amphetamine, namely, the Leuckart, the reductive amination of benzyl methyl ketone, and the nitrostyrene routes. A large body of data on the substances was recorded, including the following: mass spectra, ultraviolet spectra, Fourier transform infrared spectra, infrared spectra in gas phase, and 1H NMR and 13C NMR spectra. 相似文献