排序方式: 共有24条查询结果,搜索用时 15 毫秒
11.
Sarah Teixeira Costa M.Sc. Alexandre Rodrigues Freire Ph.D. Rodrigo Ivo Matoso M.Sc. Eduardo Daruge Júnior Ph.D. Ana Cláudia Rossi Ph.D. Felippe Bevilacqua Prado Ph.D. 《Journal of forensic sciences》2017,62(2):361-368
Complications arise in the analysis of gunshot wounds to the maxillofacial region, when neither the projectile nor the gun is found at the crime scene. We simulated 5‐ and 15‐cm firing distances at a human mandible to investigate the external morphology of entrance wounds based on fire range. The ammunition models, .40‐caliber S&W, .380‐caliber, and 9 × 19‐mm Luger, were constructed with free‐form NURBS surfaces. In a dynamic simulation, projectiles were fired against mandibular body 3D model at 5 and 15 cm. All entrance wounds presented oval aspect. Maximum diameter and von Mises stress values were 16.5 mm and 50.8 MPa, both for .40‐caliber S&W fired at 5 cm. The maximum energy loss was 138.4 J for .40 S&W fired at 15 cm. In conclusion, the mandible was most affected by .40‐caliber S&W and morphological differences were observable in holes caused by different incoming projectile calibers fired at different distances. 相似文献
12.
Proença P Pinho Marques E Teixeira H Castanheira F Barroso M Avila S Vieira DN 《Forensic science international》2003,133(1-2):95-100
Fenarimol (Rubigan) is a pyrimidine ergosterol biosynthesis inhibitor used as a systemic fungicide. The authors present a fatal fenarimol intoxication case analysed in the Forensic Toxicology Service of the National Institute of Legal Medicine. The results were used to compare two different HPLC techniques, regarding selectivity and sensitivity: an HPLC system with a diode array detector (DAD) and an HPLC system with a DAD and a mass spectrometry detector (MSD) with an electrospray interface. All biological samples were submitted to a solid-phase extraction procedure. The detection and quantification limits of fenarimol, linearity, precision and accuracy were evaluated. The fenarimol concentration levels determined were of 89.0 mg/ml in gastric contents, 1.9 mg/g in liver and 0.4 mg/g in kidney. Blood was not available at autopsy. No published data related to fenarimol self-poisoning were found, so it was not possible to interpret the results obtained by comparison with toxic/lethal levels. 相似文献
13.
Revenue Diversification in Public Higher Education: Comparing the University and Polytechnic Sectors
Pedro N. Teixeira Vera Rocha Ricardo Biscaia Margarida Fonseca Cardoso 《Public administration review》2014,74(3):398-412
Financial stringency has been an increasing concern in the higher education sector, especially in the aftermath of the financial crisis. As a result, public higher education institutions have been under increasing pressure to diversify their funding sources through tuition fees and other nonpublic revenues. This article reflects on the institutional impact of those changes by analyzing a panel of 30 higher education institutions from the Portuguese public university and polytechnic sectors for the period between 2003 and 2009. The authors explore the relevance of institutional characteristics such as enrollments in undergraduate and postgraduate programs, the qualifications of academic staff, and the regional environment where institutions are located. Results suggest that certain institutional characteristics related to mission differentiation and the path of development of binary systems are important determinants of higher education institutions’ ability to earn income from tuition fees and other nonpublic sources. 相似文献
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Antonio Teixeira de Barros Cristiane Brum Bernardes Malena Rehbein 《The Journal of Legislative Studies》2016,22(4):540-558
ABSTRACTThis paper examines how new technologies are employed by the Brazilian Chamber of Deputies to stimulate experiences of digital engagement. It also evaluates how new technologies are put in practice by the institution, considering its potentialities and limitations in mediating the relationship between the parliament and the citizens. This analysis is anchored in concepts put forth by Polsby about arena parliaments and transformative parliaments, in order to evaluate which of these models of engagement tools have greater potential. The study concludes that the use of digital technologies by the Brazilian Parliament is very diverse, with a variety of tools that allow for the interaction and engagement of citizens, although these tools have the greatest potential for the arena parliament model. 相似文献
16.
Proença P Teixeira H Pinheiro J Monsanto PV Vieira DN 《Forensic science international》2007,170(2-3):200-203
Tianeptine (Stablon), although structurally similar to tricyclic antidepressants, acts by enhancing the reuptake of serotonin. A fatal case is presented involving a 26-year-old man, found lying in bed with a "mushroom of foam" around his mouth. Empty blister packs of Stablon and a suicide note were found next to the body. A liquid-liquid extraction procedure with n-hexane: ethyl acetate and n-hexane: 2-propanol, followed by LC-DAD-MS analysis, using positive mode electrospray ionization was performed. The detection limit was 0.001 microg/mL. The toxicological results revealed the following tianeptine concentrations in the post-mortem samples: blood 5.1 microg/mL; urine 2.0 microg/mL; liver 23 microg/g; stomach contents 22 mg. Femoral blood analyses also revealed an ethanol concentration of 0.53 g/L. The present method was also developed and validated for the other post-mortem specimens, since no previous published data had confirmed the post-mortem distribution of tianeptine. The absence of other suitable direct causes of death (macroscopic or histological) and the positive results achieved with the toxicological analysis led the pathologist to rule that death was due to an intoxication caused by the suicidal ingestion of tianeptine in combination with alcohol. 相似文献
17.
Aurora A. C. Teixeira Sawelerk Nascimento 《Journal of contemporary African studies : JCAS》2019,37(4):351-378
ABSTRACTStudies on Small States, ‘unattractive’ markets, namely those from Africa, are very scarce. São Tomé and Príncipe (STP), a Small State, insular economy, has had considerable momentum in attracting FDI in the last decade albeit its geographical and demographic constraints and relative weak economic growth. The current study uncovers the potential determinants of FDI in unattractive markets using STP as a case study. Based on (robust) logistic estimations on a sample of 56 Portuguese companies that have trade relations with African countries, we show that in the case of Small States economies and unattractive markets, the relevance of institutional factors and resource seeking strategies surpass internalisation and location factors related to market size and dynamics. We further uncovered that foreign companies’ characteristics, namely size and (general) human capital, are critical in explaining companies’ likelihood to invest in an ‘unattractive’ market. 相似文献
18.
Helena Teixeira Alain Verstraete Paula Proena Francisco Corte-Real Paula Monsanto Duarte Nuno Vieira 《Forensic Science International Supplement Series》2007,170(2-3):148
A fully validated, sensitive and specific method for the extraction and quantification of Δ9-tetrahydrocannabinol (THC) and 11-nor-9-carboxy-Δ9-THC (THC-COOH) and for the detection of 11-hydroxy-Δ9-THC (11-OH THC) in oral fluid, urine and whole blood is presented. Solid-phase extraction and liquid chromatography–mass spectrometry (LC–MS) technique were used, with electrospray ionization. Three ions were monitored for THC and THC-COOH and two for 11-OH THC. The compounds were quantified by selected ion recording of m/z 315.31, 329.18 and 343.16 for THC, 11-OH THC and THC-COOH, respectively, and m/z 318.27 and 346.26 for the deuterated internal standards, THC-d3 and THC-COOH-d3, respectively. The method proved to be precise for THC and THC-COOH both in terms of intra-day and inter-day analysis, with intra-day coefficients of variation (CV) less than 6.3, 6.6 and 6.5% for THC in saliva, urine and blood, respectively, and 6.8 and 7.7% for THC-COOH in urine and blood, respectively. Day-to-day CVs were less than 3.5, 4.9 and 11.3% for THC in saliva, urine and blood, respectively, and 6.2 and 6.4% for THC-COOH in urine and blood, respectively. Limits of detection (LOD) were 2 ng/mL for THC in oral fluid and 0.5 ng/mL for THC and THC-COOH and 20 ng/mL for 11-OH THC, in urine and blood. Calibration curves showed a linear relationship for THC and THC-COOH in all samples (r2 > 0.999) within the range investigated.The procedure presented here has high specificity, selectivity and sensitivity. It can be regarded as an alternative method to GC–MS for the confirmation of positive immunoassay test results, and can be used as a suitable analytical tool for the quantification of THC and THC-COOH in oral fluid, urine and/or blood samples. 相似文献
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Soares Laís de Sousa Abreu Dalboni Filipe Mendes Teixeira Evandro Camargos 《Crime, Law and Social Change》2021,76(4):409-430
Crime, Law and Social Change - Criminality is a major factor in reducing the well-being of the Brazilian population. As a result, many researchers and governments strive to discover what can reduce... 相似文献
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Support for Democracy in Times of Crisis: Diffuse and Specific Regime Support in Portugal and Greece
Conceição Pequito Teixeira Emmanouil Tsatsanis Ana Maria Belchior 《South European society & politics》2014,19(4):501-518
In the context of a cross-national economic crisis, questions about democratic legitimacy are again topical. We explore the question of democratic legitimacy in Portugal and Greece by employing the conceptual differentiation between diffuse and specific regime support. Our findings indicate that while specific support has fallen in both countries, only Greece has experienced a precipitous fall in diffuse support, suggesting a link between regime performance and support for democracy. Individual-level analyses do not reveal any clear patterns concerning the impact of long-term societal factors or short-term economic considerations. Due to data quality limitations the paper has a predominately exploratory nature. 相似文献