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671.
Ludwig Niewoehner Ph.D. ; Jan Andrasko Ph.D. ; Jan Biegstraaten B.Sc. ; Lawrence Gunaratnam M.Sc. ; Sylvia Steffen Ph.D. ; Steffen Uhlig Ph.D. ; Sabine Antoni M.Sc. 《Journal of forensic sciences》2008,53(1):162-167
Abstract: Within the framework of the ENFSI Expert Working Group "Firearms" a proficiency test on the detection and identification of GSR by energy-dispersive scanning electron microanalysis (SEM/EDX) is carried out in a 2 years term. The latest test was performed in 2005/2006 and was denoted as GSR2005 . Seventy-five laboratories from 28 countries participated in this proficiency test and submitted in total 83 independent data-sets. The participating laboratories were requested to determine the total number of PbSbBa containing particles on a synthetic test sample following their own laboratory specific methods of automated GSR particle search and detection by SEM/EDX. Furthermore size and position of the detected particles had to be reported by the laboratories and were evaluated statistically. The results were compiled by means of z -scores according to the IUPAC and EURACHEM guidelines—assessing individual laboratory achievements (inter-laboratory) as well as intra-laboratory performance—and were compared to the results of the previous proficiency test run GSR2003 ( 1 ). The comparison shows that there is a noticeable improvement in the method's detection capability. 相似文献
672.
With increasing regional disparities in economic development and living conditions in Europe, migration has become a key element in domestic politics of many European countries. One of the main concerns of analysis has been the search for important determinants of migration, however, the role of ?region specific cultural capital“ has not been considered. This omission is the starting point of our discussion and we introduce region specific capital as a form of cultural capital. In contrast to widespread approaches, hypotheses deriving from the theory of Pierre Bourdieu and his distinction of economic, social and cultural capital are deduced and empirically tested, using a representative survey of 3005 persons living in Saxony. The results show that the main determinants of migration are region specific cultural capital, dissatisfaction and age. 相似文献
673.
674.
Abstract: Several applications of a microthermal desorption device for analysis of small forensic samples are presented. The method uses a solid phase microextraction holder with the fiber removed. In addition to samples of inks on paper, this device was successfully used for analysis of toners, various stains on bank notes, and lipstick stains on paper. Other small items encountered in a forensic science laboratory were also analyzed: particles of smokeless powder, particles of coffee, and automotive clear topcoat layer. The desorbed compounds were analyzed by gas chromatography with a flame ionization detector or by gas chromatography–mass spectrometry. This device can be used in connection with any kind of gas chromatograph. By selection of different injector temperatures, fractionated thermal desorption of samples is achieved. The procedure was demonstrated on samples of ballpoint pen ink of various age. 相似文献
675.
Antoinette S. Spoelder M.D. Jan K. G. Louwerens M.D. Stefanie D. Krens Pharm.D. Nynke Jager Pharm.D. Natalie E. LeCouffe M.D. Wouter de Ruijter M.D. Ph.D. Tibor M. Brunt Ph.D. 《Journal of forensic sciences》2019,64(6):1950-1952
4‐bromo‐2,5‐dimethoxyphenethylamine (2C‐B) is a designer drug. In Europe, 2C‐B is easily obtained and used for recreational purposes. It is known for its stimulating effects similar to those of 3,4‐methylenedioxymethamphetamine, although in higher doses it has more hallucinogenic effects. Here, we report a case of 2C‐B ingestion, confirmed by liquid chromatography‐tandem mass spectrometry, in an 18‐year‐old man. The neurological consequences were severe, including the development of serotonin syndrome and severe brain edema. Supportive therapy resulted in a stable condition, although, after several months, the patient still suffered from severe neurological impairment due to the drug‐induced toxicity. This case showed that 2C‐B could not be identified with the drugs of abuse screening routinely used in Dutch hospitals. The use of 2C‐B carries many risks, with potentially profound neurological damage, that both consumers and healthcare physicians are unaware of. 相似文献
676.
Jan Querengässer Jan Bulla Klaus Hoffmann 《The journal of forensic psychiatry & psychology》2018,29(2):337-350
This study aimed to evaluate whether the elapsed time after release to first re-offense is longer for those who complete coerced forensic addiction treatment than for those who fail to complete the treatment. It is also aimed to identify predictors of re-offending for both those who complete such treatments as compared with those who do not. Two hundred and sixty-one patients discharged from five German forensic addiction clinics were investigated on 65 anamnestic, socio-demographic, and therapeutic process variables. One hundred and fifty-one patients were prematurely discharged and returned to prison (group A; time at risk [TAR] = 58.7 months), 110 finished treatment successfully (group B; TAR = 44.2 months). Federal Criminal Register data were used for follow-up. Univariate survival analyses and multivariate stepwise Cox-regression models were computed. Twelve predictors in group A revealed a four-factor model: age at admission to treatment, duration of concurrent prison sentence, number of entries in the criminal register, and attendance at prior substitution programs. The model for group B covered five out of eight predictors: regular working activities before first diagnosis of mental illness, type of main offense, (secondary) traffic offenses, outpatient rehabilitation treatments, and escapes during treatment. Successful completers of forensic addiction treatment are slower to re-offend than non-completers. 相似文献
677.
This Viewpoint essay examines university research administration and the use of software systems that automate university research grants and contract administration, including the automatic sending of emails for reporting and compliance purposes. These systems are described as “robotic bureaucracy.” The rise of regulations and their contribution to administrative burden on university research have led university administrators to increasingly rely on robotic bureaucracy to handle compliance. This article draws on the administrative burden, behavioral public administration, and electronic communications and management literatures, which are increasingly focused on the psychological and cognitive bases of behavior. These literatures suggest that the assumptions behind robotic bureaucracy ignore the extent to which these systems shift the burden of compliance from administrators to researchers. 相似文献
678.
Steven van den Oord Niels Vanlaer Hugo Marynissen Bert Brugghemans Jan Van Roey Sascha Albers Bart Cambré Patrick Kenis 《Public administration review》2020,80(5):880-894
In this article, the authors describe and illustrate what they call a “network of networks” perspective and map the development of a lead network for the Antwerp Port Authority that governed organizations and networks in the port community before and during the COVID-19 pandemic. They find that setting a collective focus and selective integration are crucial in the creation and reproduction of an effective system to adequately deal with a wicked problem like the COVID-19 pandemic. The findings on crisis management and network governance are used to engage practitioners and public policy planners to revisit the current design and governance of organizational networks within organizational fields that have been hit by the COVID-19 pandemic. 相似文献
679.
Michelle Wood Marleen Laloup Maria del Mar Ramirez Fernandez Kevin M. Jenkins Michael S. Young Jan G. Ramaekers Gert De Boeck Nele Samyn 《Forensic Science International Supplement Series》2005,150(2-3):227
We present a validated method for the simultaneous analysis of basic drugs which comprises a sample clean-up step, using mixed-mode solid-phase extraction (SPE), followed by LC–MS/MS analysis. Deuterated analogues for all of the analytes of interest were used for quantitation. The applied HPLC gradient ensured the elution of all the drugs examined within 14 min and produced chromatographic peaks of acceptable symmetry. Selectivity of the method was achieved by a combination of retention time, and two precursor-product ion transitions for the non-deuterated analogues. Oral fluid was collected with the Intercept®, a FDA approved sampling device that is used on a large scale in the US for workplace drug testing. However, this collection system contains some ingredients (stabilizers and preservatives) that can cause substantial interferences, e.g. ion suppression or enhancement during LC–MS/MS analysis, in the absence of suitable sample pre-treatment. The use of the SPE was demonstrated to be highly effective and led to significant decreases in the interferences. Extraction was found to be both reproducible and efficient with recoveries >76% for all of the analytes. Furthermore, the processed samples were demonstrated to be stable for 48 h, except for cocaine and benzoylecgonine, where a slight negative trend was observed, but did not compromise the quantitation. In all cases the method was linear over the range investigated (2–200 μg/L) with an excellent intra-assay and inter-assay precision (coefficients of variation <10% in most cases) for QC samples spiked at a concentration of 4, 12 and 100 μg/L. Limits of quantitation were estimated to be at 2 μg/L with limits of detection ranging from 0.2 to 0.5 μg/L, which meets the requirements of SAMHSA for oral fluid testing in the workplace. The method was subsequently applied to the analysis of Intercept® samples collected at the roadside by the police, and to determine MDMA and MDA levels in oral fluid samples from a controlled study. 相似文献
680.
Jan P. S. Fiselier 《Journal of Quantitative Criminology》1992,8(1):133-151
This paper tests the hypothesis of the stability of punishment as developed by Blumstein and his associates against Dutch prison data. After summarizing the existing empirical evidence, Dutch prison data are presented pertaining to the average daily population in penal institutions, on the one hand, and the number of admissions in these institutions, on the other hand. In three ways it is tested whether these data do support the hypothesis: regression analysis, Box-Jenkins analysis, and the analysis of a few dynamic models as presented by Berket al. (1981). The paper ends with discussing Blumstein's hypothesis and considers the way research into the extent of the prison population should be continued. 相似文献