927 resultados para mandatory arrest


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Contient : « Bref état des recettes et dépenses du Roi de l'année 1642,... quia esté copié sur un manuscrit qui est dans le cabinet de M. le duc de R*** »

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Comprend : Réponse à la lettre du Pere Lan... jés. Aux jésuites ; Lettre à un ami

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Comprend : Pièces apocryphes relatives à son procès

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The purpose of this study was to explore the experiences of 5 stakeholder groups—students, parents, community organization representatives, guidance counsellors, and secondary school principals—in dealing with a mandatory secondary school graduation requirement in Ontario. The requirement is that students must complete 40 hours of eligible community involvement activities during their high school years in order to graduate. Ten stakeholders were interviewed regarding the nature of the community involvement program, what makes it work, and suggestions for improvement. The study found that although this program has the potential to provide a meaningful experience for students, and students are seen to gain from their experience in multiple ways, it depends substantially on the commitment of students, educators, and community organizations to make it worthwhile. Stakeholders recommended changes to the current program, which included making it a more structured process that would increase the consistency ofhow this program is implemented, finding ways to curb cheating and to reduce the administrative burden on schools, having more support from the Ontario provincial government and Ontario Ministry of Education and Training in the promotion and communication of this program, and developing partnerships between community organizations and schools to enrich the application of this program. This study concludes with a recommendation that the Ontario Ministry of Education and Training consider introducing Service-Learning, a curriculum-based experiential service and learning process, as an enhancement to the current community involvement program.

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This study explored experiences in relation to the impact of the College of Nurses of Ontario's (CNO's) mandatory Quality Assurance (QA) program on registered nurses (RNs) working in a clinical setting of an acute care hospital. A qualitative descriptive research design was used and data collection was done in 2 stages. First, a survey with open-ended questions was given to 45 nurses. Second, 8 respondents from the survey were interviewed using a semistructured format. Data were obtained from 2 groups-diploma-prepared and post diploma-prepared RNs. Findings demonstrated that the CNO's QA program had varying influences on the RNs' learning paths, and these differences appeared to be related to the educational background of the individual. The diploma-prepared nurses reported that their commitment to professional development was influenced by their level of internal motivation, the pressures associated with time, and the need for a strong external motivator, namely the obligation of management to conduct formal performance appraisals. They further reported that the QA program played a part in positively altering their commitment to continuing education. The post-diploma baccalaureate nurses reported that the QA program played a positive role in influencing their ongoing learning, along with their level of internal motivation, the work and health care environment, and the element of professionalism. Several implications for nursing practice, theory, and fiirther research also became evident.

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This paper examines the equity market response to firms’ disclosure of human rights violation risk with regard to conflict mineral usage as required by Section 1502 of the Dodd-Frank Act (the Act). This paper assesses the aggregate equity market response to regulatory events leading to the passage of the Act, the equity market reaction to voluntary early disclosures and mandatory disclosures of conflict mineral information in Form SD, as well as the determinants of the equity market response. Using a sample of 4,399 US registrants from January 1, 2008 to September 30, 2014, we document a significant negative stock market reaction to the passage of the Act and to conflict minerals disclosures on Form SD. The equity market reaction is more negative and limited to companies that source their minerals from conflict zones, companies with human rights violations, and companies with ambiguous disclosures. Taken together, the results of this study provide an economic justification for companies with poor conflict minerals practices to improve in order to avoid high costs that will arise if firms are forced to disclose human rights abuses. This paper also provides preliminary evidence that Form SD is successful in reducing the governance gap that exposes investors to unnecessary sanction, litigation and reputation risk from firms’ activities in conflict minerals usage.

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Affiliation: Département de microbiologie et immunologie, Faculté de médecine, Université de Montréal

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HIV-1 viral protein R (Vpr) induces a cell cycle arrest at the G2/M phase by a mechanism involving the activation of the DNA damage sensor ATR. We and others recently showed that Vpr performs this function by subverting the activity of the DDB1-CUL4A (VPRBP) E3 ubiquitin ligase. Vpr could thus act as a connector between the E3 ligase and an unknown cellular factor whose ubiquitination would induce G2 arrest. While attractive, this model is solely based on the indirect observation that some mutants of Vpr retain their interaction with the E3 ligase but fail to induce G2 arrest. Using a tandem affinity purification approach, we observed that Vpr interacts with ubiquitinated cellular proteins and that this association requires the recruitment of an active E3 ligase given that depletion of VPRBP by RNA interference or overexpression of a dominant-negative mutant of CUL4A decreased this association. Importantly, G2-arrest-defective mutants of Vpr in the C-terminal putative substrate-interacting domain displayed decreased association with ubiquitinated proteins. We also found that inhibition of proteasomal activity increased this association and that the ubiquitin chains were at least in part constituted of classical K48 linkages. Interestingly, inhibition of K48 polyubiquitination specifically impaired Vpr-induced phosphorylation of H2AX, an early target of ATR, but did not affect UV-induced H2AX phosphorylation. Overall, our results provide direct evidence that association of Vpr with the DDB1-CUL4A (VPRBP) E3 ubiquitin ligase induces the K48-linked polyubiquitination of yet-unknown cellular proteins resulting in their proteasomal degradation and ultimately leading to activation of ATR and G2 arrest.

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Mémoire numérisé par la Division de la gestion de documents et des archives de l'Université de Montréal.

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Le développement accéléré des technologies de communication, de saisie et de traitement de l’information durant les dernières années décennies ouvre la voie à de nouveaux moyens de contrôle social. Selon l’auteur Gary Marx ceux-ci sont de nature non coercitive et permettent à des acteurs privés ou publics d’obtenir des informations personnelles sur des individus sans que ceux-ci y consentent ou mêmes sans qu’ils en soient conscients. Ces moyens de contrôle social se fondent sur certaines valeurs sociales qui sont susceptibles de modifier le comportement des individus comme le patriotisme, la notion de bon citoyen ou le volontarisme. Tout comme les moyens coercitifs, elles amènent les individus à adopter certains comportements et à divulguer des informations précises. Toutefois, ces moyens se fondent soit sur le consentement des individus, consentement qui est souvent factice et imposée, soit l’absence de connaissance du processus de contrôle par les individus. Ainsi, l’auteur illustre comment des organisations privées et publiques obtiennent des informations privilégiées sur la population sans que celle-ci en soit réellement consciente. Les partisans de tels moyens soulignent leur importance pour la sécurité et le bien publique. Le discours qui justifie leur utilisation soutient qu’ils constituent des limites nécessaires et acceptables aux droits individuels. L’emploi de telles méthodes est justifié par le concept de l’intérêt public tout en minimisant leur impact sur les droits des individus. Ainsi, ces méthodes sont plus facilement acceptées et moins susceptibles d’être contestées. Toutefois, l’auteur souligne l’importance de reconnaître qu’une méthode de contrôle empiète toujours sur les droits des individus. Ces moyens de contrôle sont progressivement intégrés à la culture et aux modes de comportement. En conséquence, ils sont plus facilement justifiables et certains groupes en font même la promotion. Cette réalité rend encore plus difficile leur encadrement afin de protéger les droits individuels. L’auteur conclut en soulignant l’important décalage moral derrière l’emploi de ces méthodes non-coercitives de contrôle social et soutient que seul le consentement éclairé des individus peut justifier leur utilisation. À ce sujet, il fait certaines propositions afin d’encadrer et de rendre plus transparente l’utilisation de ces moyens de contrôle social.

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La rapamycine est un immunosuppresseur utilisé pour traiter plusieurs types de maladies dont le cancer du rein. Son fonctionnement par l’inhibition de la voie de Tor mène à des changements dans des processus physiologiques, incluant le cycle cellulaire. Chez Saccharomyces cerevisiae, la rapamycine conduit à une altération rapide et globale de l’expression génique, déclenchant un remodelage de la chromatine. Nous proposons que les modifications des histones peuvent jouer un rôle crucial dans le remodelage de la chromatine en réponse à la rapamycine. Notre objectif principal est d’identifier d’une banque de mutants d’histone les variantes qui vont échouer à répondre à la rapamycine dans une tentative de réaliser une caractérisation des modifications d’histone critiques pour la réponse à cette drogue. Ainsi, nous avons réalisé un criblage d’une banque de mutants d’histone et identifié plusieurs mutants d‘histone dont la résistance à la rapamycine a été altérée. Nous avons caractérisé une de ces variantes d’histone, à savoir H2B, qui porte une substitution de l’alanine en arginine en position 95 (H2B-R95A) et démontré que ce mutant est extrêmement résistant à la rapamycine, et non à d’autres drogues. Des immunoprécipitations ont démontré que H2B-R95A est défectueux pour former un complexe avec Spt16, un facteur essentiel pour la dissociation de H2A et H2B de la chromatine, permetant la réplication et la transcription par les ADN et ARN polymérases, respectivement. Des expériences de ChIP-Chip et de micropuce ont démontré que l’arginine 95 de H2B est requise pour recruter Spt16 afin de permettre l’expression d’une multitude de gènes, dont certains font partie de la voie des phéromones. Des évidences seront présentées pour la première fois démontrant que la rapamycine peut activer la voie des phéromones et qu’une défectuosité dans cette voie cause la résistante à cette drogue.

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Background: Porcine reproductive and respiratory syndrome virus (PRRSV) is one of the most important pathogens in the swine industry and causes important economic losses. No effective antiviral drugs against it are commercially available. We recently reported that the culture supernatant of Actinobacillus pleuropneumoniae, the porcine pleuropneumonia causative agent, has an antiviral activity in vitro against PRRSV in SJPL cells. Objectives of this study were (i) to identify the mechanism behind the antiviral activity displayed by A. pleuropneumoniae and (ii) to characterize the active molecules present in the bacterial culture supernatant. Methods: Antibody microarray analysis was used in order to point out cellular pathways modulated by the A. pleuropneumoniae supernatant. Subsequent, flow cytometry analysis and cell cycle inhibitors were used to confirm antibody microarray data and to link them to the antiviral activity of the A. pleuropneumoniae supernatant. Finally, A. pleuropneumoniae supernatant characterization was partially achieved using mass spectrometry. Results: Using antibody microarray, we observed modulations in G2/M-phase cell cycle regulation pathway when SJPL cells were treated with A. pleuropneumoniae culture supernatant. These modulations were confirmed by a cell cycle arrest at the G2/M-phase when cells were treated with the A. pleuropneumoniae culture supernatant. Furthermore, two G2/M-phase cell cycle inhibitors demonstrated the ability to inhibit PRRSV infection, indicating a potential key role for PRRSV infection. Finally, mass spectrometry lead to identify two molecules (m/z 515.2 and m/z 663.6) present only in the culture supernatant. Conclusions: We demonstrated for the first time that A. pleuropneumoniae is able to disrupt SJPL cell cycle resulting in inhibitory activity against PRRSV. Furthermore, two putative molecules were identified from the culture supernatant. This study highlighted the cell cycle importance for PRRSV and will allow the development of new prophylactic or therapeutic approaches against PRRSV.