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51.
A simple method for analyzing nitrite in urine has been developed to confirm and quantify the amount of nitrite in potentially adulterated urine samples. The method involved separation of nitrite by capillary electrophoresis and direct UV detection at 214 nm. Separation was performed using a bare fused silica capillary and a 25 mM phosphate run buffer at a pH of 7.5. Sample preparation consisted of diluting the urine samples 1:20 with run buffer and internal standard, and centrifuging for 5 min at 2500 rpm. The sample was hydrodynamically injected, then separated using -25 kV with the column maintained at 35 degrees C. The method had upper and lower limits of linearity of 1500 and 80 microg/mL nitrite, respectively, and a limit of detection of 20 microg/mL. The method was evaluated using the National Committee for Clinical Laboratory Standards (NCCLS) protocol (Document EP10-A2), and validated using controls, standards, and authentic urine samples. Ten anions, ClO-, CrO4(-2), NO3-, HCO3-, I-, CH3COO-, F-, SO4-, S2O8(-2), and Cl-, were tested for potential interference with the assay. Interferences with quantitation were noted for only CrO4(-2) and S2O8(-2). High concentrations of Cl- interfered with the chromatography. The method had acceptable accuracy, precision, and specificity. 相似文献
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Perry PJ Kutscher EC Lund BC Yates WR Holman TL Demers L 《Journal of forensic sciences》2003,48(3):646-651
Supraphysiologic doses of testosterone are associated with increased aggression that is hypothesized to be a function of testosterone serum concentrations, mood, and personality. The study attempted to characterize this relationship among weightlifters who were users (n = 10) and nonusers (n = 18) of anabolic steroids. Participants were interviewed using the Modified Mania Rating Scale and Hamilton Rating Scale for Depression to assess mood, the Buss-Durkee Hostility Inventory (BDHI) and Point Subtraction Aggression Paradigm (PSAP) to assess aggression, and the Personality Disorder Questionnaire (PDQ-R) to assess personality. Blood samples were obtained for the determination of total, free, and weakly bound testosterone. Comparisons of continuous variables between testosterone users and non-users were performed with a parametric (unpaired t-test) or non-parametric (Mann-Whitney) test where appropriate. Correlations with testosterone were examined separately for testosterone users and non-users, using Spearman rank correlation. The subjective (BDHI) and objective (PSAP) assessments of aggression found that supranormal testosterone concentrations were associated with increased aggression. However, the PDQ-R results suggest that this finding was confounded by the personality disorder profile of the steroid users, because steroid users demonstrated Cluster B personality disorder traits for antisocial, borderline, and histrionic personality disorder. 相似文献
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This article explores the potential evisceration of the deterrence function of punitive damages, one of the only economic incentives that deters insurance companies from opportunistically breaching their insurance policies. Readers will gain an understanding of why large punitive damages awards are essential in the insurance coverage field and how such awards may implicate due process standards. The article explains the constitutional limitations set forth by the U.S. Supreme Court in imposing punitive damages, and provides a roadmap of how lower courts and practitioners are presently applying these rules. 相似文献
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The BiDil story offers an ideal opportunity to explore the nature and tone of media representations of race and genetics. For example, was a biological view of race emphasized? Or was the notion of race presented in a critical fashion? 相似文献
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Timothy J. Murphy 《Canadian public administration. Administration publique du Canada》2008,51(1):99-126
Abstract: Much of the public debate about public‐private partnerships (P3s) has occurred through the lens of those who either oppose or support this increasingly popular method of delivering public infrastructure assets. Despite some scepticism in the academic literature, an analysis of the key arguments for and against P3s concludes that the P3 model can successfully deliver public infrastructure goods and services, provided that certain key thresholds are met. Lessons learned from early experiments in P3s and from the experience of the newer government P3 procurement agencies suggest that P3s can provide value for money if risk is allocated to the party best able to manage it. An appropriate risk allocation requires that governments have the expertise to identify all of the relevant risks before entering into the partnership contract. Governments must also have the contract management skills to ensure that those risks are in fact borne by the private sector. To maintain public confidence in the P3 model, governments must live up to their own obligations of transparency and accountability and not succumb to private‐sector demands for confidentiality. The article recognizes that not all government goods and services can meet the threshold but that, if they do, it argues strongly for the efficiency and effectiveness of the P3 model. Sommaire: Une grande partie du débat public au sujet des partenariats entre le secteur public et le secteur privé (les P3) a eu lieu par l'entremise de ceux qui opposent ou soutiennent cette méthode de plus en plus populaire de livrer de l'infrastructure publique. En dépit d'un certain scepticisme émanant des documents d'universitaires, une analyse des principaux arguments en faveur des P3 et contre ceux‐ci conclut que les P3 peuvent livrer avec succès des produits et services d'infrastructure publique, à condition que certains seuils clés soient atteints. Les enseignements tirés des premières expériences de P3 et de l'expérience des plus récents organismes d'approvisionnement gouvernementaux P3 laissent entendre que les P3 peuvent apporter une optimisation des ressources si le risque est attribuéà la partie la plus apte à le gérer. Une bonne répartition du risque exige que les gouvernements aient l'expertise pour identifier tous les risques pertinents avant de signer le contrat de partenariat. Les gouvernements doivent aussi avoir les compétences en gestion de contrats nécessaires pour veiller à ce que les risques soient en fait assumés par le secteur privé. Pour maintenir la confiance du public dans le modèle de P3, les gouvernements doivent respecter leurs engagements de transparence et de reddition de comptes et ne pas céder aux exigences du secteur privé concernant la protection des renseignements personnels. L'article reconnaît que tous les produits et services gouvernementaux ne peuvent pas tous atteindre le seuil de conformités mais que, lorsqu'ils y parviennent, le modèle de P3 est alors hautement efficace et efficient. 相似文献
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In Ashley v Chief Constable of Sussex , the House of Lords ruled that a civil claim in trespass to the person may be sustained against an individual police officer in respect of a fatal shooting, in circumstances where the officer had already been acquitted in criminal proceedings and where liability to compensate in respect of all losses had been conceded. Two members of the majority clearly ruled that trespass torts may have a vindicatory purpose which survives a concession of liability to compensate, thus deepening the connection between tort, and the protection of fundamental rights, and suggesting an intriguing distinction between the functions of civil and criminal law. 相似文献