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Sample records for au canada initiatives

  1. L'entrepreneuriat au Canada dans le contexte mondial | IDRC ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    24 nov. 2014 ... Également selon le rapport, au Canada, les immigrants de première génération se lancent en affaires dans une proportion plus élevée que le reste de la population, et les femmes participent davantage à l'activité entrepreneuriale que dans les autres pays du G7. En outre, au Canada, contrairement à ce ...

  2. L'entrepreneuriat au Canada dans le contexte mondial | CRDI ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Également selon le rapport, au Canada, les immigrants de première génération se lancent en affaires dans une proportion plus élevée que le reste de la population, et les femmes participent davantage à l'activité entrepreneuriale que dans les autres pays du G7. En outre, au Canada, contrairement à ce que l'on observe ...

  3. Global Entrepreneurship Monitor - étude au Canada | CRDI - Centre ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    La compréhension de l'entrepreneuriat à l'échelle mondiale permet aux chercheurs d'analyser les tendances en matière de politiques et de pratiques ainsi que de tirer des leçons permettant d'améliorer l'entrepreneuriat. Cette étude sur trois ans générera des renseignements précieux sur l'entrepreneuriat au Canada et ...

  4. Initial Eccentricity in Deformed 197Au+197Au and 238U+238U Collisions at RHIC

    Energy Technology Data Exchange (ETDEWEB)

    Filip, Peter; Lednicky, Richard; Masui, Hiroshi; Xu, Nu

    2010-07-07

    Initial eccentricity and eccentricity fluctuations of the interaction volume created in relativistic collisions of deformed {sup 197}Au and {sup 238}U nuclei are studied using optical and Monte-Carlo (MC) Glauber simulations. It is found that the non-sphericity noticeably influences the average eccentricity in central collisions and eccentricity fluctuations are enhanced due to deformation. Quantitative results are obtained for Au+Au and U+U collisions at energy {radical}s{sub NN} = 200 GeV.

  5. New South Africa–Canada Research Chairs Initiative | IDRC ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    2016-12-08

    Dec 8, 2016 ... They build on NRF's existing South African Research Chairs Initiative (SARChI), as well as on the Industrial Research Chairs program, funded in part by the Natural Sciences and Engineering Research Council of Canada (NSERC) and the Canada Research Chairs Program (CRCP). Funded jointly by ...

  6. HISTORIOGRAPHIES ET FÉDÉRALISME AU CANADA

    Directory of Open Access Journals (Sweden)

    Xavier Dionne

    2009-10-01

    Full Text Available This article studies the historical representation of the two main national communities in Canada; that is, the English-Canadian and the French-Canadian.Throughout the history of the English Canadian community, one cansee an ambitious national project. The national construction of Canada suggests the existence of a neutral model of government but, when looking at this carefully, it is possible to see something quite different. English-speaking historians from Canada have normally introduced the concept of a unitary federalism as the most perfect form of the Canadian integration project. This integrating federalism, that does not lead to emancipation, stems from thecentralist views of John Macdonald, one of the fathers of Canadian federalism. This approach has been kept for over 140 years of common history and, to this date, continues to be one of the main obstacles for minority nations within Canada. To strengthen their thesis, the authors base their work on an extensive analysis exploring the three big strategies used by the central government to assert its authority on the member States of the Canadian Federation in the long term: using the judicial power, centralizing powers andglobalization. The strategies used have varied depending on the economic scenario, political leaders and the political power relations regarding the links between the Federation and the provinces.

  7. L'entrepreneuriat au Canada dans le contexte mondial | CRDI ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    24 nov. 2014 ... Grâce au Global Entrepreneurship Monitor (GEM), des chercheurs canadiens et étrangers acquièrent et mettent en commun des connaissances sur les motivations des entrepreneurs et sur la façon de les aider à prospérer. Les gouvernements s'appuient sur leurs constatations pour élaborer des politiques ...

  8. LA MISE EN OEUVRE DE LA METHODE ABC/ABM AU CANADA, EN FRANCE ET AU JAPON. ETUDE COMPARATIVE

    OpenAIRE

    Bescos, Pierre-Laurent; Cauvin, Eric; Gosselin, Maurice; Yoshikawa, Takeo

    2001-01-01

    International audience; Cette communication a pour but d'analyser les résultats d'une enquête internationale sur la mise en oeuvre de la méthode ABC/ABM conduite au Canada, en France et au Japon.. En ce qui concerne la France, nous avons obtenu 111 réponses aux questionnaires envoyés par l'intermédiaire de la DFCG. Sur cet ensemble, 20% des entreprises ont mis en place la méthode et 32% ont un projet en cours ou ont entamé une réflexion sur le sujet. Cette enquête est la première du genre sur...

  9. Étendre la protection de la loi aux populations à risque au Canada ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    14 juil. 2016 ... La juge en chef de la Cour suprême du Canada, la très honorable Beverley McLachlin, le procureur général de la Sierra Leone, l'honorable Joseph Kamara, et la correspondante parlementaire pour le réseau CBC, Alison Crawford, se sont joints au CRDI le 16 juin 2016 pour discuter des obstacles qui ...

  10. La légalisation du cannabis au Canada: Les défis politiques

    OpenAIRE

    Beauchesne, Line

    2017-01-01

    Résumé Le gouvernement libéral du Canada élu majoritaire le 19 octobre 2015 avait dans ses promesses électorales la légalisation du cannabis. Il tiendra parole. Un Document de discussion fut publié en juin 2016 donnant les assises au Groupe de Travail sur la Légalisation et la Réglementation du Cannabis qui a rendu son rapport le 30 novembre 2016. Ce rapport, a expliqué le gouvernement, sera un des outils pour élaborer son cadre législatif et servira de base aux discussions avec les provinces...

  11. La formation des ingénieurs électrotechniciens au Canada avant la Première Guerre mondiale

    NARCIS (Netherlands)

    Auger, J.F.

    2006-01-01

    Résumé : La formation des ingénieurs électrotechniciens débuta au cours de la Seconde Révolution industrielle (1880-1920) en Europe et en Amérique du Nord. Ce chapitre examine l’établissement du génie électrique au Canada avant la Première Guerre mondiale. Il démontre l’influence de la politique

  12. Incidence du cancer au Canada : tendances et projections (1983-2032

    Directory of Open Access Journals (Sweden)

    Lin Xie

    2015-01-01

    devrait continuer d'augmenter de 2 % entre 2003-2007 et 2008-2012, puis commencer à fléchir de 18 % au cours des 20 dernières années de projection. De tous les cancers féminins, on s'attend à ce que l'incidence du cancer du sein soit celle qui change le moins (une hausse de moins de 1 %. L'évolution prévue des taux pour le cancer colorectal est inférieure aux médianes pour l'ensemble des cancers, avec une diminution de 6 %, tant chez les hommes que chez les femmes, durant toute la période de projection. En ce qui concerne le cancer de la prostate, si la prévalence du dépistage se stabilise à l'avenir, les taux devraient demeurer stables. Augmentation prévue du nombre de nouveaux cas de cancer : Au Canada, on prévoit que le nombre annuel de nouveaux cas de cancer augmentera de 84 % chez les hommes, passant de 80 800 en 2003-2007 à 148 400 en 2028-2032, et de 74 % chez les femmes, passant de 74 200 à 128 800. Facteurs des variations dans les cas de cancer : La principale raison de la hausse du nombre de tous les cas de cancer nouvellement diagnostiqués sera le vieillissement de la population canadienne, et dans une moindre mesure la croissance démographique. Les variations du risque de cancer constitueront une composante relativement mineure de la hausse prévue du nombre de nouveaux cas. Les interventions préventives peuvent grandement influencer les taux d'incidence futurs de certains types de cancer. Cancers les plus courants : Les cancers les plus courants chez les hommes — cancers de la prostate, du poumon et de la vessie, cancer colorectal et lymphome non hodgkinien — devraient demeurer inchangés entre 2003-2007 et 2028-2032, mais on prévoit que le cancer colorectal remplacera le cancer du poumon au deuxième rang des cancers les plus fréquemment diagnostiqués d'ici 2028-2032. Chez les femmes, les cancers du sein, du poumon, de l'utérus ainsi que le cancer colorectal sont les quatre principaux cancers pour lesquels de nouveaux cas seront

  13. La saga du vin au Canada à l’époque de la Nouvelle-France

    Directory of Open Access Journals (Sweden)

    Catherine Ferland

    2004-12-01

    Full Text Available Avec l’expansion coloniale européenne et le développement de nouvelles routes commerciales transcontinentales et maritimes au XVIe siècle, le vin conquiert de nouveaux espaces géographiques et sociaux. Avant le contact européen, le vin est un produit culturel inconnu au Canada. La présence de vignes canadiennes qui croissent à l’état sauvage suscite beaucoup d’espoirs et semble confirmer que le Nouveau Monde est une terre d’abondance. Les lambrusques locales n’atteignent cependant pas les critères de qualité auxquels les Français s’attendent : en dépit des soins, elles ne produisent qu’un vin médiocre. L’acclimatation de vignes françaises est tentée, dans l’espoir de parvenir à implanter ce symbole civilisateur en terre de colonisation, mais l’expérience fonctionne mal en raison du climat rigoureux. Puisque les espoirs vinicoles coloniaux sont voués à l’échec, l’importation s’avère nécessaire. En définitive, la consommation de vin permet d’affirmer et de confirmer son identité française.With the colonial adventure and the development of new commercial and maritime routes in the 16th century, wine gains over new geographic and social areas. Before European contact, wine is unknown as a cultural product. Some Canadian vineyards grow naturally: they raise up many hopes and seem to confirm that the New World is a wealthy world. But the local plants can’t satisfy French standards: despite all cares, they produce a bad, second-rate wine. The acclimatization of French vine is also disappointing because of icy Canadian winters. Since colonial vine-growing is bound to fail, importation becomes necessary. Finally, wine is an essential beverage in the colonial adventure: drinking wine permits to state and confirm a French identity.

  14. Les missions de paix et le Canada : Enseignements des conflits au ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Les missions de paix et le Canada analyse la participation du Canada aux récents efforts internationaux pour résoudre les conflits qui ont ravagé le Nicaragua, ... la Fondation Azrieli et les Instituts de recherche en santé du Canada annoncent l'appel de propositions pour la quatrième ronde du Programme conjoint canado.

  15. Bilinguisme et traduction au Canada. Role sociolinguistique du traducteur. (Bilingualism and Translation in Canada. The Sociolinguistic Role of the Translator).

    Science.gov (United States)

    Juhel, Denis

    This study concerns the problems posed by modes of interlinguistic communication, translation, and individual bilingualism, on which depend the quality of relationships between two ethnic communities belonging to a single political entity. It also addresses a frequent question about the need for translation in a bilingual country like Canada. The…

  16. Cancers attribuables à l’excès de poids au Canada en 2010

    Directory of Open Access Journals (Sweden)

    Dianne Zakaria

    2017-01-01

    Full Text Available Introduction : L’excès de poids (indice de masse corporelle [IMC] de 25,00 kg/m2 ou plus est un facteur de risque bien connu de diabète, d’hypertension et de maladie cardiovasculaire, mais on en sait moins sur son lien avec le cancer. Dans cette étude, nous avons utilisé le risque attribuable dans la population (RAP pour estimer le fardeau des cancers attribuables à l’excès de poids chez les adultes canadiens (de 25 ans ou plus en 2010. Méthodologie : Nous avons estimé les RAP en utilisant des estimations du risque relatif (RR tirées du Continuous Update Project du World Cancer Research Fund International, des estimations du surpoids et de l’obésité fondées sur l’IMC tirées de l’Enquête sur la santé dans les collectivités canadiennes de 2000-2001 (surpoids : 25,00 à 29,99 kg/m2; obésité : 30,00 kg/m2 et plus et nous avons utilisé les nombres de cas de cancer figurant dans le Registre canadien du cancer. Les RAP ont été fondés sur des IMC corrigés pour tenir compte du biais associé à l’autodéclaration de la taille et du poids. Résultats : Au Canada, en 2010, on peut attribuer environ 9 645 cas de cancer à un excès de poids, ce qui représente 5,7 % de tous les cas de cancer (hommes : 4,9 %; femmes : 6,5 %. En limitant l’analyse aux types de cancer associés à un IMC élevé, le RAP augmente à 14,9 % (hommes : 17,5 %; femmes : 13,3 %. Les types de cancer pour lesquels le RAP était le plus élevé étaient l’adénocarcinome de l’oesophage (42,2 %, le cancer du rein (25,4 %, le cancer du cardia (20,7 %, le cancer du foie (20,5 %, le cancer du côlon (20,5 % et le cancer de la vésicule biliaire (20,2 % chez les hommes, et l’adénocarcinome de l’oesophage (36,1 %, le cancer de l’utérus (35,2 %, le cancer de la vésicule biliaire (23,7 % et le cancer du rein (23,0 % chez les femmes. Les types de cancer pour lesquels le nombre de cas attribuables était le plus élevé étaient le cancer du c

  17. Canadian Medical Education Statistics, 1980/81 = Statistiques Relatives a l'enseignement Medical au Canada.

    Science.gov (United States)

    Association of Canadian Medical Colleges, Ottawa (Ontario).

    Data for 1980-1981 pertaining to medical education in Canada are presented. Information about Canadian medical schools, population of Canada by province and distribution of medical school openings, tuition, payment scales for post-M.D. clinical trainees, clinical clerkship stipends, and numbers of Canadian medical schools offering instruction in…

  18. Collectivités et exploitation minière au Canada et dans le monde ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Mines Alerte s'efforce, de trois manières, de faire en sorte que les pratiques de mise en valeur des ressources minérales soient compatibles avec des collectivités durables et avec la santé écologique : elle fournit un appui au renforcement des capacités et au réseautage dans les collectivités touchées par les activités ...

  19. Le Canada contribue à améliorer la nutrition des enfants au Vietnam ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    14 déc. 2015 ... Affaires mondiales Canada et le CRDI, par l'intermédiaire du Fonds canadien de recherche sur la sécurité alimentaire internationale (FCRSAI), verseront 1,16 million de dollars à des chercheurs de l'Institut national de la nutrition du Vietnam et de l'Université Ryerson du Canada afin qu'ils mettent en ...

  20. Nouvelle initiative des chaires de recherche Canada-Afrique du Sud ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    8 déc. 2016 ... L'Initiative de partenariats trilatéraux des chaires de recherche Canada-Afrique du Sud a pour objectif d'investir dans le développement de la ... recherche du Canada ou chaire de recherche industrielle) et un chercheur principal provenant d'un autre pays d'Afrique visé par un accord bilatéral avec la NRF, ...

  1. Major initiatives related to childhood obesity and physical inactivity in Canada: the year in review.

    Science.gov (United States)

    Tremblay, Mark S

    2012-01-01

    This manuscript briefly reviews 15 significant initiatives related to childhood obesity and physical inactivity in Canada between September 2010 and September 2011. These include the: announcement of a Federal-Provincial-Territorial framework for action to promote healthy weights; implementation of the nutrition labeling initiative; launch of the CBC "Live Right Now" campaign; announcement of the Public Health Agency of Canada's innovation strategy funding related to obesity; publication of the Canadian Health Measures Survey physical activity findings; release of new Canadian physical activity and sedentary behaviour guidelines; launch of ParticipACTION's "Think Again" campaign; workshop on building trust to address the epidemic of obesity; start of the Canadian Pediatric Weight Management Registry; initiation of "Our Health Our Future: A National Dialogue on Healthy Weights"; release of the Active Healthy Kids Canada Report Card on Physical Activity for Children and Youth; National Obesity Summit; Nature Play Day and Sports Day in Canada; development of the Canadian Assessment of Physical Literacy; and the creation of Active Canada 20/20--A National Physical Activity Plan. The diversity and intensity of activity addressing the childhood obesity and physical inactivity "epidemic" in Canada is encouraging and must be maintained and enhanced.

  2. Canadiana.org: One of Canada's oldest and newest digitization initiatives

    Directory of Open Access Journals (Sweden)

    Brian Bell

    2008-06-01

    Full Text Available Canadiana.org is a new independent, non-profit, alliance of partners, includingLibrary and Archives Canada, from all parts of Canada's cultural, heritage,research, broadcasting and publishing communities, chartered to raise funds,receive donations and grants and to act as the overall coordinator and facilitatorfor digitization initiatives and related enduring access services and preservationinfrastructures. Working with Library and Archives Canada under the frameworkof the Canadian Digital Information Strategy, Canadiana.org has a 'masterplan' to facilitate a coherent national digital information strategy. The communityhas developed a bilingual metadata toolkit to suit most types of material as anoption for those who need it. The community also supports a powerful bilingualpublic access Indexing and Discovery Portal system (right now brandedAlouetteCanada to enhance the searching and discovery of local digitalcollections of all types across the country.

  3. Factors Associated with Breastfeeding Initiation: A Comparison between France and French-Speaking Canada.

    Directory of Open Access Journals (Sweden)

    Lisa-Christine Girard

    Full Text Available Breastfeeding is associated with multiple domains of health for both mothers and children. Nevertheless, breastfeeding initiation is low within certain developed countries. Furthermore, comparative studies of initiation rates using harmonised data across multiple regions is scarce.The aim of the present study was to investigate and compare individual-level determinants of breastfeeding initiation using two French-speaking cohorts.Participants included ~ 3,900 mothers enrolled in two cohort studies in Canada and France. Interviews, questionnaires, and medical records were utilised to collect information on maternal, family, and medical factors associated with breastfeeding initiation.Rates of breastfeeding initiation were similar across cohorts, slightly above 70%. Women in both Canada and France who had higher levels of maternal education, were born outside of their respective countries and who did not smoke during pregnancy were more likely to initiate breastfeeding with the cohort infant. Notably, cohort effects of maternal education at the university level were found, whereby having 'some university' was not statistically significant for mothers in France. Further, younger mothers in Canada, who delivered by caesarean section and who had previous children, had reduced odds of breastfeeding initiation. These results were not found for mothers in France.While some similar determinants were observed, programming efforts to increase breastfeeding initiation should be tailored to the characteristics of specific geographical regions which may be heavily impacted by the social, cultural and political climate of the region, in addition to individual and family level factors.

  4. Education in the Age of the Information Superhighway: An Investigation into Initial Teacher Training in Canada

    Science.gov (United States)

    Illingworth, Martin

    2012-01-01

    This article discusses particular aspects of current Canadian teacher training that seem healthy practice to an experienced school-teacher from the United Kingdom. With the UK government increasingly interested, some would say determined, in moving the funding of initial teacher training away from universities and to schools, my visit to Canada,…

  5. Les missions de paix et le Canada : Enseignements des conflits au ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Peut-être est-il trop tôt pour dire si le souci de la sécurité internationale peut se combiner à celui de la sécurité et du bien-être humains pour donner lieu à une nouvelle « architecture » de l'oeuvre pour la paix. Quoi qu'il en soit, les leçons et la réflexion contenues dans Les missions de paix et le Canada, éclairent la ...

  6. CANADA

    International Development Research Centre (IDRC) Digital Library (Canada)

    Hakan Mustafa

    . AAAA. Numéro du fournisseur. Protégé B*. (une fois rempli). RENSEIGNEMENTS GÉNÉRAUX, FISCAUX ET BANCAIRES DU FOURNISSEUR – CANADA. Section 1 : RENSEIGNEMENTS GÉNÉRAUX. Nom du particulier (nom, prénom) ou ...

  7. The Transition of Educational Policies and Initiatives for the Inuit in Canada

    OpenAIRE

    下村, 智子

    2002-01-01

    This paper describes and examines the transition of educational policies and initiatives for the Inuit of Canada since 1950. From 1950 to 1970, the federal government implemented educational policies based on the idea of assimilation. Inuit students were relocated to residential schools in the south, attended day schools or missionary schools in their communities. Teaching styles and curriculum introduced in these schools were unfamiliar to the Inuit, resulted in identity conflicts, difficult...

  8. FÉDÉRALISME D'OUVERTURE ET POUVOIR DE DÉPENSER AU CANADA

    Directory of Open Access Journals (Sweden)

    Alain Noël

    2008-10-01

    Full Text Available In power since January 2006, the leader of the Canadian Conservative party,Stephen Harper, promised to break with the previous governments’ “domineering”style of governance and to put into practice a new type of “openfederalism.” Specifically, this approach involved correcting the fiscal imbalancebetween Ottawa and the provinces, taking measures to recognize Quebec’sspecificity, and limiting the federal government’s recourse to an alleged spendingpower. This article briefly surveys the foundations of Canadian politics andthe years when the Liberal party was in power, between 1993 and 2006, toassess the measures adopted by the Harper government, particularly with respectto the spending power. This power is not attributed in the constitutionnor is it founded on clear jurisprudence, but Ottawa still claims and invokesit. Despite ther promises, the Conservatives have failed to offer a satisfactoryformula for limiting its usage. So, Canada remains driven by the centralisingprocess that has prevailed since the start of the 1980’s.

  9. Facteurs influençant l'initiation au traitement antirétroviral des ...

    African Journals Online (AJOL)

    Pour cette étude, nous avons obtenu une clairance éthique. Résultats: Nous avons étudiés 460 dossiers de patients séropositifs en phase d'initiation au traitement antirétroviral dans lesCTA de Bamenda et de Bertoua, 53,9% et 46,1% respectivement. L 'âge médian était de 36 ans. La plupart des séropositifs à Bertoua (41) ...

  10. Proterozoic low-sulfidation epithermal Au-Ag mineralization in the Mallery Lake area, Nunavut, Canada

    Science.gov (United States)

    Turner, William; Richards, Jeremy; Nesbitt, Bruce; Muehlenbachs, Karlis; Biczok, John

    2001-08-01

    The Mallery Lake area contains pristine examples of ancient precious metal-bearing low-sulfidation epithermal deposits. The deposits are hosted by rhyolitic flows of the Early Proterozoic Pitz Formation, but are themselves apparently of Middle Proterozoic age. Gold mineralization occurs in stockwork quartz veins that cut the rhyolites, and highest gold grades (up to 24 g/t over 30 cm) occur in the Chalcedonic Stockwork Zone. Quartz veining occurs in two main types: barren A veins, characterized by fine- to coarse-grained comb quartz, with fluorite, calcite, and/or adularia; and mineralized B veins, characterized by banded chalcedonic silica and fine-grained quartz, locally intergrown with fine-grained gold or electrum. A third type of quartz vein (C), which crosscuts B veins at one locality, is characterized by microcrystalline quartz intergrown with fine-grained hematite and rare electrum. Fluid inclusions in the veins occur in two distinct assemblages. Assemblage 1 inclusions represent a moderate temperature (Th=150 to 220 °C), low salinity (~1 eq. wt% NaCl, with trace CO2), locally boiling fluid; this fluid type is found in both A and B veins and is thought to have been responsible for Au-Ag transport and deposition. Assemblage 2 inclusions represent a lower temperature (Th=90 to 150 °C), high salinity calcic brine (23 to 31 wt% CaCl2-NaCl), which occurs as primary inclusions only in the barren A veins. Assemblage 1 and 2 inclusions occur in alternating quartz growth bands in the A-type veins, where they appear to represent alternating fluxes of dilute fluid and local saline groundwater. No workable primary fluid inclusions were observed in the C veins. The A-vein quartz yields δ18O values from 8.3 to 14.5‰ (average=10.9±1.7‰ [1σ], n=30), whereas δ18O values for B-vein quartz range from 11.2 to 14.0‰ (average=13.0±0.9‰, n=12). Calculated δ18OH2O values for the dilute mineralizing fluid from B veins range from -2.6 to 0.2‰ (average=-0.8±0.9

  11. Les politiques territoriales de l’eau au Québec (Canada

    Directory of Open Access Journals (Sweden)

    Frédéric Lasserre

    2010-10-01

    Full Text Available La politique nationale de l’eau (PNE du Québec a été présentée en 2002 par le gouvernement Landry (Parti québécois. Des expériences prometteuses tentées quelques années auparavant ont en effet conduit le ministère de l’environnement à développer des instruments de planification à l’échelle des bassins versants et à encourager la gouvernance locale de l’eau. Il s’avère cependant aujourd’hui que les moyens alloués à la PNE sont insuffisants au regard des objectifs initialement affichés par les pouvoirs publics. En particulier, les organisations de bassins versants demeurent en partie inopérantes faute d’argent. La mise en place de redevances pénalisantes visant les pollueurs, les consommateurs et les aménageurs s’impose désormais pour alimenter de manière beaucoup plus importante le Fonds national de l’eau du Québec, destiné à financer la PNE.The Québec National Water Policy (PNE was first introduced in 2002 by the Landry government (Parti québécois. Promising experiments conducted a few years before had led the ministry of the Environment to encourage the development of policy planning instruments within watersheds, and to foster local water governance. However, it now seems that the means allocated by the provincial government to achieve theses goals are inadequate considering the scope of the PNE. In particular, local water basin agencies remain ineffective because of a lack of funding. The implementation of taxes aimed at polluters, consumers and operators seems unavoidable so as to finance the Quebec National Water Fund, set up originally to finance the PNE.

  12. Canada-United States-Mexico Trilateral Cooperation on Childhood Obesity Initiative.

    Science.gov (United States)

    Rabadán-Diehl, Cristina; Safdie, Margarita; Rodin, Rachel

    2016-08-01

    Childhood obesity is an important public health problem that affects countries in the Americas. In 2014, Pan American Health Organization (PAHO) Member States agreed on a Plan of Action for the Prevention of Obesity in Children and Adolescents in an effort to address the impact of this disorder in the Americas region. The interventions laid out in this regional plan are multi-faceted and require multi-sectoral partnerships. Building on a strong history of successful trilateral collaboration, Canada, Mexico, and the United States formed a partnership to address the growing epidemic of childhood obesity in the North American region. This collaborative effort, known as the Trilateral Cooperation on Childhood Obesity Initiative, is the first initiative in the region to address chronic noncommunicable diseases by bringing together technical and policy experts, with strong leadership and support from the secretaries and ministers of health. The Initiative's goals include increasing levels of physical activity and reducing sedentary behavior through 1) increased social mobilization and citizen engagement, 2) community- based outreach, and 3) changes to the built (man-made) environment. This article describes the background and development process of the Initiative; specific goals, activities, and actions achieved to date; and opportunities and next steps. This information may be useful for those forming other partnerships designed to address childhood obesity or other complex public health challenges in the region. RESUMEN La obesidad infantil es un problema de salud pública importante que afecta a los países de las Américas. En el 2014, los Estados Miembros de la Organización Panamericana de la Salud (OPS) acordaron un Plan de acción para la prevención de la obesidad en la niñez y la adolescencia con el fin de hacer frente a las repercusiones de este trastorno en la Región de las Américas. Las intervenciones que componen este plan regional son multifacéticas y

  13. Robertson Davies’s Cultural Consciousness Robertson Davies : l’expansion de la conscience culturelle au Canada

    Directory of Open Access Journals (Sweden)

    Sabine Jackson

    2009-10-01

    Full Text Available Cet article souligne le rapport existant entre le développement de la psyché canadienne et l’œuvre de Robertson Davies, considéré comme l’incarnation des valeurs traditionnelles britanniques et de l’écrivain blanc anglo-saxon au Canada. Descendant de Loyalistes et de Gallois, Robertson Davies représente l’héritage européen ; il est par conséquent souvent perçu comme « un Victorien bourru » auquel on doit la construction de Massey College, simulation pittoresque des Collèges d’Oxford, avec ses professeurs prisant le tabac et prenant leurs repas à la table d’honneur. On l’a dépeint comme un aristocrate. Ses romans appellent l’adjectif « conservateur », et si on l’a parfois qualifié d’ « homme de lettres », ce n’était pas tant pour décrire sa versatilité que pour le taxer de rétrograde. Cependant, l’intérêt de Davies pour la pensée psychanalytique de C. G. Jung l’a amené à s’interroger sur l’individu humain et la question de l’identité. Né en 1913 et mort en 1995, Davies a observé les mutations du Canada, passant d’un pays dominé par les Protestants blancs anglo-saxons à ce qu’il est devenu : une société multiculturelle dont l’idéologie peut se résumer par le terme « mosaïque ». Ses trilogies, The Salterton Trilogy, The Deptford Trilogy et The Cornish Trilogy, démontrent de façon exemplaire ce processus de diversification. Tout en examinant ce que « être Canadien » veut dire, Davies, comme on le voit dans ses livres, se rendait compte que l’identité canadienne ne se résumait pas simplement à son histoire coloniale ni à ses liens actuels avec les Etats-Unis.

  14. Significance of the Maritimes Region ecosystem research initiative to marine protected area network planning within Fisheries and Oceans Canada

    National Research Council Canada - National Science Library

    Lawton, P; Westhead, M; Greenlaw, M.E; Smith, S.J; Brown, C.J; Quigley, S; Brickman, D

    2013-01-01

    This research document outlines the relevance to Marine Protected Area (MPA) network planning of scientific work recently completed under Fisheries and Oceans Canada's Maritimes Region Ecosystem Research Initiative (ERI...

  15. 2014-2015 CAUT Almanac of Post-Secondary Education in Canada = 2014-2015 Almanach de l'enseignement postsecondaire au Canada de l'ACPPU

    Science.gov (United States)

    Canadian Association of University Teachers, 2015

    2015-01-01

    The "Canadian Association of University Teachers (CAUT) Almanac of Post-Secondary Education in Canada" is a source for the most current statistical information available on post-secondary education in Canada. The Almanac provides statistics on the following: (1) university and college finances; (2) academic staff salaries and gender; (3)…

  16. Canadian Adjuvant Initiative Workshop, March 26-27, 2013--Ottawa, Canada.

    Science.gov (United States)

    Krishnan, Lakshmi; Twine, Susan; Gerdts, Volker; Barreto, Luis; Richards, James C

    2014-01-01

    Novel adjuvants hold the promise for developing effective modern subunit vaccines capable of appropriately modulating the immune response against challenging diseases such as those caused by chronic and/or intracellular pathogens and cancer. Over the past decade there has been intensive research into discovering new adjuvants, however, their translation into routine clinical use is lagging. To stimulate discussion and identify opportunities for networking and collaboration among various stakeholders, a Canadian Adjuvant Initiative Workshop was held in Ottawa. Sponsored by the National Research Council Canada, Canadian Institutes of Health Research and the Vaccine Industry Committee, a two day workshop was held that brought together key Canadian and international stakeholders in adjuvant research from industry, academia and government. To discover innovation gaps and unmet needs, the presentations covered a board range of topics in adjuvant development; criteria for selection of lead adjuvant candidates from an industry perspective, discovery research across Canada, bioprocessing needs and challenges, veterinary vaccines, Canadian vaccine trial capabilities, the Canadian regulatory framework and WHO formulation laboratory experience. The workshop concluded with a discussion on the opportunity to create a Canadian Adjuvant Development Network. This report details the key discussion points and steps forward identified for facilitating adjuvant development research in Canada.

  17. Enhanced production of direct photons in Au + Au collisions at square root(S(NN)) = 200 GeV and implications for the initial temperature.

    Science.gov (United States)

    Adare, A; Afanasiev, S; Aidala, C; Ajitanand, N N; Akiba, Y; Al-Bataineh, H; Alexander, J; Al-Jamel, A; Aoki, K; Aphecetche, L; Armendariz, R; Aronson, S H; Asai, J; Atomssa, E T; Averbeck, R; Awes, T C; Azmoun, B; Babintsev, V; Baksay, G; Baksay, L; Baldisseri, A; Barish, K N; Barnes, P D; Bassalleck, B; Bathe, S; Batsouli, S; Baublis, V; Bauer, F; Bazilevsky, A; Belikov, S; Bennett, R; Berdnikov, Y; Bickley, A A; Bjorndal, M T; Boissevain, J G; Borel, H; Boyle, K; Brooks, M L; Brown, D S; Bucher, D; Buesching, H; Bumazhnov, V; Bunce, G; Burward-Hoy, J M; Butsyk, S; Campbell, S; Chai, J-S; Chang, B S; Charvet, J-L; Chernichenko, S; Chiba, J; Chi, C Y; Chiu, M; Choi, I J; Chujo, T; Chung, P; Churyn, A; Cianciolo, V; Cleven, C R; Cobigo, Y; Cole, B A; Comets, M P; Constantin, P; Csanád, M; Csörgo, T; Dahms, T; Das, K; David, G; Deaton, M B; Dehmelt, K; Delagrange, H; Denisov, A; d'Enterria, D; Deshpande, A; Desmond, E J; Dietzsch, O; Dion, A; Donadelli, M; Drachenberg, J L; Drapier, O; Drees, A; Dubey, A K; Durum, A; Dzhordzhadze, V; Efremenko, Y V; Egdemir, J; Ellinghaus, F; Emam, W S; Enokizono, A; En'yo, H; Espagnon, B; Esumi, S; Eyser, K O; Fields, D E; Finger, M; Finger, M; Fleuret, F; Fokin, S L; Forestier, B; Fraenkel, Z; Frantz, J E; Franz, A; Frawley, A D; Fujiwara, K; Fukao, Y; Fung, S-Y; Fusayasu, T; Gadrat, S; Garishvili, I; Gastineau, F; Germain, M; Glenn, A; Gong, H; Gonin, M; Gosset, J; Goto, Y; Granier de Cassagnac, R; Grau, N; Greene, S V; Grosse Perdekamp, M; Gunji, T; Gustafsson, H-A; Hachiya, T; Hadj Henni, A; Haegemann, C; Haggerty, J S; Hagiwara, M N; Hamagaki, H; Han, R; Harada, H; Hartouni, E P; Haruna, K; Harvey, M; Haslum, E; Hasuko, K; Hayano, R; Heffner, M; Hemmick, T K; Hester, T; Heuser, J M; He, X; Hiejima, H; Hill, J C; Hobbs, R; Hohlmann, M; Holmes, M; Holzmann, W; Homma, K; Hong, B; Horaguchi, T; Hornback, D; Hur, M G; Ichihara, T; Imai, K; Inaba, M; Inoue, Y; Isenhower, D; Isenhower, L; Ishihara, M; Isobe, T; Issah, M; Isupov, A; Jacak, B V; Jia, J; Jin, J; Jinnouchi, O; Johnson, B M; Joo, K S; Jouan, D; Kajihara, F; Kametani, S; Kamihara, N; Kamin, J; Kaneta, M; Kang, J H; Kanou, H; Kawagishi, T; Kawall, D; Kazantsev, A V; Kelly, S; Khanzadeev, A; Kikuchi, J; Kim, D H; Kim, D J; Kim, E; Kim, Y-S; Kinney, E; Kiss, A; Kistenev, E; Kiyomichi, A; Klay, J; Klein-Boesing, C; Kochenda, L; Kochetkov, V; Komkov, B; Konno, M; Kotchetkov, D; Kozlov, A; Král, A; Kravitz, A; Kroon, P J; Kubart, J; Kunde, G J; Kurihara, N; Kurita, K; Kweon, M J; Kwon, Y; Kyle, G S; Lacey, R; Lai, Y-S; Lajoie, J G; Lebedev, A; Le Bornec, Y; Leckey, S; Lee, D M; Lee, M K; Lee, T; Leitch, M J; Leite, M A L; Lenzi, B; Lim, H; Liska, T; Litvinenko, A; Liu, M X; Li, X; Li, X H; Love, B; Lynch, D; Maguire, C F; Makdisi, Y I; Malakhov, A; Malik, M D; Manko, V I; Mao, Y; Masek, L; Masui, H; Matathias, F; McCain, M C; McCumber, M; McGaughey, P L; Miake, Y; Mikes, P; Miki, K; Miller, T E; Milov, A; Mioduszewski, S; Mishra, G C; Mishra, M; Mitchell, J T; Mitrovski, M; Morreale, A; Morrison, D P; Moss, J M; Moukhanova, T V; Mukhopadhyay, D; Murata, J; Nagamiya, S; Nagata, Y; Nagle, J L; Naglis, M; Nakagawa, I; Nakamiya, Y; Nakamura, T; Nakano, K; Newby, J; Nguyen, M; Norman, B E; Nyanin, A S; Nystrand, J; O'Brien, E; Oda, S X; Ogilvie, C A; Ohnishi, H; Ojha, I D; Okada, H; Okada, K; Oka, M; Omiwade, O O; Oskarsson, A; Otterlund, I; Ouchida, M; Ozawa, K; Pak, R; Pal, D; Palounek, A P T; Pantuev, V; Papavassiliou, V; Park, J; Park, W J; Pate, S F; Pei, H; Peng, J-C; Pereira, H; Peresedov, V; Peressounko, D Yu; Pinkenburg, C; Pisani, R P; Purschke, M L; Purwar, A K; Qu, H; Rak, J; Rakotozafindrabe, A; Ravinovich, I; Read, K F; Rembeczki, S; Reuter, M; Reygers, K; Riabov, V; Riabov, Y; Roche, G; Romana, A; Rosati, M; Rosendahl, S S E; Rosnet, P; Rukoyatkin, P; Rykov, V L; Ryu, S S; Sahlmueller, B; Saito, N; Sakaguchi, T; Sakai, S; Sakata, H; Samsonov, V; Sato, H D; Sato, S; Sawada, S; Seele, J; Seidl, R; Semenov, V; Seto, R; Sharma, D; Shea, T K; Shein, I; Shevel, A; Shibata, T-A; Shigaki, K; Shimomura, M; Shohjoh, T; Shoji, K; Sickles, A; Silva, C L; Silvermyr, D; Silvestre, C; Sim, K S; Singh, C P; Singh, V; Skutnik, S; Slunecka, M; Smith, W C; Soldatov, A; Soltz, R A; Sondheim, W E; Sorensen, S P; Sourikova, I V; Staley, F; Stankus, P W; Stenlund, E; Stepanov, M; Ster, A; Stoll, S P; Sugitate, T; Suire, C; Sullivan, J P; Sziklai, J; Tabaru, T; Takagi, S; Takagui, E M; Taketani, A; Tanaka, K H; Tanaka, Y; Tanida, K; Tannenbaum, M J; Taranenko, A; Tarján, P; Thomas, T L; Togawa, M; Toia, A; Tojo, J; Tomásek, L; Torii, H; Towell, R S; Tram, V-N; Tserruya, I; Tsuchimoto, Y; Tuli, S K; Tydesjö, H; Tyurin, N; Vale, C; Valle, H; van Hecke, H W; Velkovska, J; Vertesi, R; Vinogradov, A A; Virius, M; Vrba, V; Vznuzdaev, E; Wagner, M; Walker, D; Wang, X R; Watanabe, Y; Wessels, J; White, S N; Willis, N; Winter, D; Woody, C L; Wysocki, M; Xie, W; Yamaguchi, Y L; Yanovich, A; Yasin, Z; Ying, J; Yokkaichi, S; Young, G R; Younus, I; Yushmanov, I E; Zajc, W A; Zaudtke, O; Zhang, C; Zhou, S; Zimányi, J; Zolin, L

    2010-04-02

    The production of e+ e- pairs for m(e+ e-)photon internal conversions, the invariant yield of direct photons is deduced. In central Au+Au collisions, the excess of the direct photon yield over p+p is exponential in transverse momentum, with an inverse slope T=221+/-19(stat)+/-19(syst) MeV. Hydrodynamical models with initial temperatures ranging from T(init) approximately 300-600 MeV at times of approximately 0.6-0.15 fm/c after the collision are in qualitative agreement with the data. Lattice QCD predicts a phase transition to quark gluon plasma at approximately 170 MeV.

  18. Diabetes mellitus and the Aboriginal diabetic initiative in Canada: An update review

    Directory of Open Access Journals (Sweden)

    Lawrence Leung

    2016-01-01

    Full Text Available Diabetes mellitus is a chronic disease of major global health concern due to its increasing prevalence in both developing and developed counties, with a projection increase of 214% from the year 2000 to 2030. Among the Aboriginal population of Canada (which includes the First Nations, Inuit and Metis, diabetes mellitus contribute significantly to their higher morbidity and increased health disparity when compared to the non-Aboriginal Canadians. In view of this, the Federal Government of Canada had launched the Aboriginal Diabetes Initiative (ADI in 1999 as part of the bigger Canadian Diabetes Strategy to provide a better framework for surveillance, public education and community-based management of diabetes. Originally, ADI was intended for a 5-year cycle, but it was renewed twice in 2005 and then 2010, with a total funding of C$523 million. Given its long history of operation and the massive amount of revenue being injected, it is worthwhile to review the background information and the relevant data that had fostered the ADI; and more importantly, to critically evaluate the benefits and impact of the ADI in terms of the actual health of the Aboriginals and their social inequalities.

  19. Social determinants of health in Canada: are healthy living initiatives there yet? A policy analysis.

    Science.gov (United States)

    Gore, Dana; Kothari, Anita

    2012-08-14

    Preventative strategies that focus on addressing the social determinants of health to improve healthy eating and physical activity have become an important strategy in British Columbia and Ontario for combating chronic diseases. What has not yet been examined is the extent to which healthy living initiatives implemented under these new policy frameworks successfully engage with and change the social determinants of health. Initiatives active between January 1, 2006 and September 1, 2011 were found using provincial policy documents, web searches, health organization and government websites, and databases of initiatives that attempted to influence to nutrition and physical activity in order to prevent chronic diseases or improve overall health. Initiatives were reviewed, analyzed and grouped using the descriptive codes: lifestyle-based, environment-based or structure-based. Initiatives were also classified according to the mechanism by which they were administered: as direct programs (e.g. directly delivered), blueprints (or frameworks to tailor developed programs), and building blocks (resources to develop programs). 60 initiatives were identified in Ontario and 61 were identified in British Columbia. In British Columbia, 11.5% of initiatives were structure-based. In Ontario, of 60 provincial initiatives identified, 15% were structure-based. Ontario had a higher proportion of direct interventions than British Columbia for all intervention types. However, in both provinces, as the intervention became more upstream and attempted to target the social determinants of health more directly, the level of direct support for the intervention lessened. The paucity of initiatives in British Columbia and Ontario that address healthy eating and active living through action on the social determinants of health is problematic. In the context of Canada's increasingly neoliberal political and economic policy, the public health sector may face significant barriers to addressing

  20. Social determinants of health in Canada: Are healthy living initiatives there yet? A policy analysis

    Directory of Open Access Journals (Sweden)

    Gore Dana

    2012-08-01

    Full Text Available Abstract Introduction Preventative strategies that focus on addressing the social determinants of health to improve healthy eating and physical activity have become an important strategy in British Columbia and Ontario for combating chronic diseases. What has not yet been examined is the extent to which healthy living initiatives implemented under these new policy frameworks successfully engage with and change the social determinants of health. Methods Initiatives active between January 1, 2006 and September 1, 2011 were found using provincial policy documents, web searches, health organization and government websites, and databases of initiatives that attempted to influence to nutrition and physical activity in order to prevent chronic diseases or improve overall health. Initiatives were reviewed, analyzed and grouped using the descriptive codes: lifestyle-based, environment-based or structure-based. Initiatives were also classified according to the mechanism by which they were administered: as direct programs (e.g. directly delivered, blueprints (or frameworks to tailor developed programs, and building blocks (resources to develop programs. Results 60 initiatives were identified in Ontario and 61 were identified in British Columbia. In British Columbia, 11.5% of initiatives were structure-based. In Ontario, of 60 provincial initiatives identified, 15% were structure-based. Ontario had a higher proportion of direct interventions than British Columbia for all intervention types. However, in both provinces, as the intervention became more upstream and attempted to target the social determinants of health more directly, the level of direct support for the intervention lessened. Conclusions The paucity of initiatives in British Columbia and Ontario that address healthy eating and active living through action on the social determinants of health is problematic. In the context of Canada's increasingly neoliberal political and economic policy, the

  1. Epithermal mineralization and ore controls of the Shasta Au-Ag deposit, Toodoggone District, British Columbia, Canada

    Science.gov (United States)

    Thiersch, P. C.; Williams-Jones, A. E.; Clark, J. R.

    1997-01-01

    The Shasta gold-silver deposit, British Columbia, Canada, is an adularia-sericite-type epithermal deposit in which deposition of precious metals coincided with the transition of quartz- to calcite-dominant gangue. Mineralization is associated with stockwork-breccia zones in potassically altered dacitic lapilli tuffs and flows, and consists of pyrite, sphalerite, chalcopyrite, galena, acanthite, electrum and native silver. Pre- and post-ore veins consist solely of quartz and calcite, respectively. Fluid inclusion microthermometry indicates that ore minerals were deposited between 280 ° and 225 °C, from a relatively dilute hydrothermal fluid (˜1.5 wt.% NaCl equivalent). Abundant vapor-rich inclusions in ore-stage calcite are consistent with boiling. Oxygen and hydrogen isotopic data (δ18Ofluid = -1.5 to -4.1‰; δDfluid = -148 to -171‰) suggest that the fluid had a meteoric origin, but was 18O-enriched by interaction with volcanic wallrocks. Initial (˜280 °C) fluid pH and log f O2 conditions are estimated at 5.3 to 6.0, and -32.5 to -33 bar, respectively; during ore deposition, the fluid became more alkaline and oxidizing. Ore deposition at Shasta is attributed to localization of meteoric hydrothermal fluids by extensional faults; mineralization was controlled by boiling in response to hydraulic brecciation. Calcite and base metal sulfides precipitated due to the increase in pH that accompanied boiling, and the associated decrease in H2S concentration led to precipitation of gold and silver.

  2. Canadian Medical Education Statistics=Statistiques Relatives a l'Enseignement Medical au Canada. 1981/82. Volume 4.

    Science.gov (United States)

    Ryten, E.

    Statistics on medical education in Canada are presented for 1981-1982, with English and French explanations and tables of contents. Overall areas of concern include undergraduate medical enrollment, graduate medical enrollment for academic and clinical study, research expenditure levels, type and sources of funds, and opportunities for Canadians…

  3. Élaboration d’indicateurs pour l’évaluation des collectivités-amies des aînés au Canada : démarche et résultats

    Directory of Open Access Journals (Sweden)

    H. Orpana

    2016-01-01

    Full Text Available Introduction : En 2006, l’Organisation mondiale de la Santé (OMS a lancé le projet mondial « Villes-amies des aînés » afin de favoriser un vieillissement actif. Si un grand nombre d’initiatives « amies des aînés » ont été mises en oeuvre au Canada, on dispose de peu d’information sur l’efficacité et les résultats des initiatives des collectivités-amies des aînés (CAA. En outre, les intervenants affirment qu’ils n’ont pas la capacité et les outils nécessaires pour élaborer et réaliser des évaluations relatives à leurs initiatives de CAA. Afin de pallier ces lacunes, l’Agence de la santé publique du Canada a mis au point des indicateurs pour l’évaluation des initiatives de CAA dans de nombreuses collectivités canadiennes. Ces indicateurs, destinés à répondre aux différents besoins des collectivités, ne sont pas conçus pour faire l’évaluation de répercussions collectives ou pour rendre possible une comparaison entre collectivités. Méthodologie : Une démarche de consultation itérative fondée sur des données probantes a été employée pour l’élaboration d’indicateurs relatifs aux CAA. Elle a nécessité une revue de la littérature et une analyse du contexte. Deux rondes de consultation auprès d’experts et d’intervenants clés ont été menées, ce qui a permis de classer les indicateurs potentiels en fonction de leur importance, de leur capacité à être mis en pratique et de leur faisabilité. Une liste définitive d’indicateurs et de mesures potentielles a ensuite été mise au point, en fonction des résultats de ces consultations et de considérations clés relatives aux politiques. Résultats : Trente-neuf indicateurs répartis en huit domaines relevant des CAA et quatre indicateurs relevant des résultats liés à la santé et aux conditions sociales à long terme ont été sélectionnés. Tous sont conformes à l’objectif énoncé, à savoir l’évaluation des

  4. Rapport d'étape - Embonpoint et obésité chez les enfants au Canada : une évaluation globale

    Directory of Open Access Journals (Sweden)

    Deepa P. Rao

    2017-01-01

    Full Text Available Introduction : L'obésité est un facteur de risque complexe des maladies chroniques associé à un certain nombre de déterminants socioécologiques. Ce rapport d'étape fournit un aperçu du cadre socioécologique qui guide actuellement nos efforts de suivi de l'embonpoint et de l'obésité chez les enfants. Ce cadre intègre différents facteurs de risque et de protection (facteurs sociodémographiques, liés au mode de vie, psychosociaux et en début de vie et tient compte de l'étape de vie, des niveaux d'influence et de l'environnement au sein desquels ces facteurs jouent un rôle. Méthodologie : Nous avons effectué des analyses univariées et bivariées fondées sur les données de l'Enquête sur la santé dans les collectivités canadiennes et de l'Enquête canadienne sur les mesures de la santé pour rendre compte des facteurs comportementaux, des facteurs psychosociaux et des facteurs en début de vie associés à un surplus de poids chez les enfants canadiens. Résultats : Les estimations liées aux facteurs en début de vie (p. ex. l'allaitement, aux facteurs comportementaux (p. ex. l'activité physique et aux facteurs psychosociaux (p. ex. le sentiment d'appartenance à la collectivité sont présentées en fonction du groupe d'âge, du sexe, de la suffisance du revenu et du poids. Conclusion : Cette étude, qui s'appuie sur notre publication récente sur les tendances en matière d'obésité chez les enfants au Canada et les facteurs sociodémographiques qui y sont associés, présente les facteurs de risque et de protection intégrés à notre cadre de surveillance. D'après notre analyse, une évaluation plus globale des déterminants associés au maintien d'un poids santé est nécessaire.

  5. The Harper Government's New Right Neoliberal Agenda and the Dismantling of Status of Women Canada and the Family Violence Initiative

    Directory of Open Access Journals (Sweden)

    Ruth M Mann

    2016-06-01

    Full Text Available This paper situates the Harper government’s 2006 restructuring and effective dismantling of Status of Women Canada and its 2011 take down of the approximate 12,000 volume online library of the federal Family Violence Initiative in relation to two developments. These are the ascendant influence of men’s rights and other antifeminist activism in Canada and globally; and the concurrent rise of a Hayekian-animated New Right neoliberal agenda intent on subordinating civil society and democratic rule to the forces of twenty-first century global capitalism. The paper contends that anti-feminism is among a host of neoconservative forces that the New Right instrumentalizes to augment and advance and its neoliberal agenda. For the New Right, however, the enemy is not gender equality or feminism per se but rather the market inhibiting commitment to social justice that feminism participates in and advances.

  6. Initiative de renforcement des capacités de recherche en santé au ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Regional East African Community Health Policy Initiative (REACH). The Regional East African Community Health (REACH) policy initiative aims to improve health and health equity in Kenya, Tanzania and Uganda by facilitating the translation of health research into... View moreRegional East African Community Health ...

  7. Redefining the "Normal" Worker: Law and Policy Choices for Work-Family Balance in Canada: Redéfinir le 'travailleur normal': Regard sur les choix législatifs et de politiques publiques en matière de conciliation travail-famille au Canada.

    Science.gov (United States)

    Bernstein, Stéphanie; Valentini, Mathilde

    2017-11-01

    While the need to reconcile work and family life has been recognized in discrete ways in legislation and policy over the years, there has not been a substantial shift away from the archetype of the "unencumbered" (male) worker to a new model of the "normal" worker. In Canada and elsewhere, legislative protection does not allow women or men to effectively reconcile work and family responsibilities over the life cycle. This paper examines the different ways in which work-family balance is regulated, with a focus on the Canadian federal jurisdiction and the province of Quebec, and underlines the need for coherent labor and social policy. The paper also explores the development of multi-stakeholder initiatives on work-family balance, including the development of voluntary standards and a proposal for a work-family "framework" law to ensure coherence among different laws and programs affecting work-family balance. The paper concludes by confirming the need to move away from an individualized approach toward a more mainstreamed and collectivized approach to work-family balance. Résumé Bien que la nécessité de concilier travail et vie familiale ait fait l'objet d'une reconnaissance timide dans la législation et les politiques publiques au fil des ans, il n'y a pas eu de changement substantiel de l'archétype du travailleur « sans engagements » (homme) vers un nouveau modèle de « travailleur normal ». Au Canada et ailleurs, la protection législative ne permet pas aux femmes ou aux hommes d'arrimer efficacement leurs responsabilités professionnelles et familiales au cours de leur vie. Cet article examine les différentes façons dont la conciliation travail-famille est réglementée, particulièrement en droit fédéral canadien et dans la province de Québec, et souligne la nécessité d'une politique sociale et de travail cohérente. Le texte explore également le développement d'initiatives multipartites, y compris l'élaboration de normes volontaires de

  8. Initiation à l'entomologie: Syllabus relatif au cours à distance

    OpenAIRE

    Mignon, Jacques

    2005-01-01

    Syllabus en huit chapitres correspondant aux huit modules du cours à distance "Initiation à l'entomologie" du Professeur Eric Haubruge - 1. Introduction; 2. Les appendices céphaliques; 3. Les ordres; 4. Les Hémiptères; 5. Les Lépidoptères; 6. Les Hyménoptères; 7. Les Diptères; 8. Les Coléoptères

  9. Adoption of the Nova Scotia (Canada) Community Pharmacy Medication Management Program, 1-Year Post-Initiation.

    Science.gov (United States)

    Deal, Heidi J; Cooke, Charmaine A; Ingram, Ethel M Langille; Sketris, Ingrid S

    2017-02-01

    Pharmacists conduct medication reviews to optimize drug therapy. Each jurisdiction implements and funds these programs differently. To describe the uptake of the first year of a community pharmacy medication review program reimbursed by the publically insured seniors' drug benefit program in Nova Scotia, Canada. This retrospective analysis included 294 pharmacies and 105,000 beneficiaries enrolled in the Nova Scotia Seniors' Pharmacare Program. Prescription and service claims data from this program were analyzed to determine type and number of beneficiaries receiving a medication review, number and predictors of pharmacies completing reviews, and number of prescribed medications 6-months before and 6-months after the review. 428 medication reviews were conducted and billed by 33% of Nova Scotia pharmacies (1-50 reviews per pharmacy per year). The mean number and range of medications before the review were 10.8 (4-28) and following the review 10.4 (0-24), with an average decrease of 0.4 medications (95% CI 0.1-0.6), p=.0043). Patients receiving a review had a mean age of 75.2 years; 64.9% were female. Most pharmacies conducted reviews when patients reached their annual copayment (93%). Approximately 33% of pharmacies billed at least one medication review in the first year of the program. In spite of a $150 reimbursement per community pharmacy medication review, only 428 reviews were conducted over a 13-month period for a population of over 100,000 seniors. Results suggest financial reimbursement alone is not sufficient to implement a medication management program; health systems need to determine patient, pharmacist, pharmacy and health system level strategies to implement medication reviews more broadly.

  10. Fédéralisme et droits des LGBT aux États-Unis et au Canada : analyse comparatives des politiques

    Directory of Open Access Journals (Sweden)

    Miriam Smith

    2014-12-01

    Full Text Available L’article examine le militantisme LGBT et les résultats des politiques en matière de droit pénal et du mariage entre personnes de même sexe de 1969 à aujourd’hui, dans le cadre d’une analyse comparée du fédéralisme aux États-Unis et au Canada. Nous soutiendrons que le fédéralisme a grandement façonné les politiques publiques relatives aux droits des LGBT. Dans le régime américain, le potentiel d’expansion du fédéralisme a favorisé les changements graduels de politiques dans les États et, parallèlement, les multiples points de véto créés par le système de séparation des pouvoirs conjugués aux compétences conférés aux États dans d’importants domaines de politiques ont entravé ces changements de politiques. Dans le régime canadien, la centralisation des mécanismes de protection des droits de la personne dans la Charte de même que la dynamique descendante de l’exercice du pouvoir dans le régime parlementaire de type Westminster ont facilité les changements de politiques. Le fédéralisme est souvent perçu comme un obstacle à l’adoption de politiques progressistes. La répartition des pouvoirs entrave l’élaboration de politiques cohérentes et prête le flanc à la prolifération de vétos dont peuvent se prévaloir des groupes influents pour freiner le changement. Les critiques de cette perspective arguent depuis longtemps que, même si le fédéralisme multiplie les points de véto, il présente aussi de nombreuses possibilités d’innovation. Ils font valoir que les groupes ont plus de poids dans les régimes fédéraux puisqu’ils peuvent exercer leur influence à deux paliers de gouvernement plutôt qu’à un. Ainsi, un groupe qui ne réussit pas à se faire entendre à l’un des paliers pourra tenter sa chance au second et pourra même dresser un palier contre l’autre pour atteindre ses objectifs stratégiques.

  11. Surveillance de la santé mentale positive et de ses facteurs déterminants au Canada : élaboration d’un cadre d’indicateurs de surveillance de la santé mentale positive

    Directory of Open Access Journals (Sweden)

    H. Orpana

    2016-01-01

    Full Text Available Introduction : D’après la Stratégie en matière de santé mentale pour le Canada, la collecte de données sur la santé mentale au Canada a besoin d’être améliorée. La mise en place de systèmes de surveillance sur la maladie mentale n’a pas suffi à combler toutes les lacunes statistiques relevant de la santé mentale positive et de ses facteurs déterminants au Canada. L’objectif de ce projet était d’élaborer un Cadre d’indicateurs de surveillance de la santé mentale positive, dans le but de dresser un portrait de la santé mentale positive au Canada, ainsi que de ses facteurs déterminants. Les données recueillies grâce à ce cadre de surveillance serviront de référence pour l’établissement des programmes et des politiques d’amélioration de la santé mentale des Canadiens. Méthodologie : Un examen de la littérature et une analyse contextuelle ont été réalisés afin de fournir une base théorique au cadre et de sélectionner divers critères d’évaluation de la santé mentale positive et de ses facteurs de risque et de protection. La définition de la santé mentale positive adoptée par l’Agence de la santé publique du Canada a servi de référence conceptuelle lors de l’élaboration du cadre. À partir de la liste exhaustive des risques et des facteurs de protection qui a été réalisée, des experts en santé mentale, des partenaires gouvernementaux et des intervenants indépendants ont été invités à classer les indicateurs choisis par ordre de priorité. Ces groupes ont ensuite été invités à sélectionner les méthodes de mesure les plus prometteuses pour chacun des indicateurs. Résultats : Le cadre conceptuel de surveillance de la santé mentale positive et de ses facteurs déterminants qui a été ainsi élaboré contient 5 indicateurs de résultats et 25 indicateurs de déterminants, répartis en 4 niveaux contextuels : « individu », « famille », « communauté » et « société

  12. Healthy Canada by Design CLASP: Lessons learned from the first phase of an intersectoral, cross-provincial, built environment initiative.

    Science.gov (United States)

    Miro, Alice; Kishchuk, Natalie A; Perrotta, Kim; Swinkels, Helena M

    2014-09-12

    The Healthy Canada by Design (HCBD) CLASP (Coalitions Linking Action and Science for Prevention) Initiative promotes the building of communities that support health by 1) facilitating the integration of health evidence into built environment decision-making; 2) developing new, cross-sector collaboration models and tools; and 3) fostering a national community of practice. A coalition of public health professionals, researchers, professional planners and non-governmental organization (NGO) staff from across Canada developed, implemented and participated in the Initiative. In the first phase, HCBD interventions took place for the most part in large urban and suburban settings in Quebec, Ontario and British Columbia. National knowledge transfer and exchange (KTE) activities were delivered both locally and nationally. Project participants developed tools or processes for collaboration between the health and the community planning sectors. These were designed to increase the capacity of the health sector to influence decisions about land use and transportation planning. Tool or process development was accompanied by pilot testing, evaluation, and dissemination of findings and lessons learned. On a parallel track, NGOs involved with HCBD led national KTE interventions. The first phase of HCBD demonstrated the potential for public health organizations to influence the built environment determinants of cancer and chronic diseases. Public health authorities forged relationships with several organizations with a stake in built environment decisions, including municipal and regional planning departments, provincial governments, federal government agencies, researchers, community groups and NGOs. The Initiative accomplished the following: 1) created new relationships across sectors and across health authorities; 2) improved the knowledge and skills for influencing land use planning processes among public health professionals; 3) increased awareness of health evidence and intent

  13. L’initiation à la statistique : une enquête au collège

    OpenAIRE

    Boulefdaoui, Fatima Zohra

    2016-01-01

    L’article aborde la question de l’enseignement des statistiques au collège, en essayant de répondre au questionnement suivant : pourquoi enseigner la statistique au collège et qu’apportera l’enseignement de cette discipline pour le citoyen ? Ceci d’une part, et d’autre part, quelle formation spécifique doit-on dispenser à l’enseignant de mathématiques afin que son enseignement des statistiques aboutisse à un apprentissage ?À cet effet, je présente les résultats de ma recherche, qui est struct...

  14. Perceptions of self-drive tourists along the Alaska-Canada border toward the increased security requirements of the western hemisphere travel initiative

    Science.gov (United States)

    Nicholas Palso

    2009-01-01

    This study explores the attitudes and feelings of self-drive tourists who cross the Alaska-Canada border about the increased security requirements of the Western Hemisphere Travel Initiative (WHTI), and how such attitudes and feelings may impact the tourism industry in this region. Results of a 2007 survey suggest that implementation of passport requirements will have...

  15. Predictive value of café au lait macules at initial consultation in the diagnosis of neurofibromatosis type 1.

    Science.gov (United States)

    Nunley, Kara S; Gao, Feng; Albers, Anne C; Bayliss, Susan J; Gutmann, David H

    2009-08-01

    To evaluate the predictive utility of the number and morphologic appearance of isolated café au lait macules (CALMs) in establishing the diagnosis of neurofibromatosis type 1 (NF1) in a cohort of children referred to an NF1 subspecialty clinic. Retrospective study of patients seen between the years 2004 and 2007. Tertiary care neurofibromatosis referral clinic at St Louis Children's Hospital. Patients The study population comprised 110 patients who presented with CALMs and no other diagnostic features of NF1. The median number of CALMs at initial presentation was 6, while the median age of the patients was 33 months. The median age at the last follow-up examination was 76.5 months. Number and morphologic appearance of CALMs and diagnosis of NF1. Thirty-four of the children met diagnostic criteria for NF1 during the study period. Thirty-two children met criteria prior to age 72 months, and 2 children met criteria after 72 months. The mean number of CALMs at presentation in children eventually diagnosed as having NF1 (11.8 CALMs) was significantly higher than the mean number of CALMs in children not diagnosed as having NF1 (4.6 CALMs). Of the 44 children who had 6 or more typical CALMs at presentation, 34 children met criteria for NF1. Sixty-eight patients had CALMs described as "typical," while 42 patients had "atypical" CALMs. Only 2 patients with atypical CALMs met criteria for NF1. Conclusion The majority of patients with 6 or more CALMs will eventually meet diagnostic criteria for NF1, typically by age 6 years, and this likelihood increases with increasing number and typical morphologic appearance of CALMs.

  16. Pressure Build-up and Decay in Acid Gas Injection Operations in Reefs in the Zama Field, Canada, and Implications for CO2 Storage Variations de pression au cours de l’injection de gaz acides dans le réservoir récifal duchamp de Zama, Canada. Implications pour le stockage géologique de CO2

    Directory of Open Access Journals (Sweden)

    Pooladi-Darvish M.

    2011-03-01

    Full Text Available The objective of this paper is to examinereasons for pressure rise in the Zama X2X pool in northwestern Alberta, Canada, that was used foracid gas disposal, and whether subsequent pressure decay was a result of pressure dissipation into a larger aquifer. The Zama X2X pool, approximately 1 km2 in size, is connected to four other nearby poolsthrough a common underlying aquifer. Pressure analysis for all the pools indicates that they are in goodhydraulic communication. Initial pressure in the Zama X2X pool was approximately 15 MPa. Pressuredeclined first during oil production, stabilizing at around 10 MPa in the early 1970s, after which started toincrease such that it reached 26 MPa in 1986. Subsequently, pressure declined reaching 22 MPa by 1995just prior to starting injection of acid gas (80% CO2 and 20% H2S. The operator injected acid gas at lowerrates and wellhead pressures than those licensed by the regulatory agency. Despite significant production ofwater and hydrocarbons, the pressure in the Zama X2X pool continued to be higher than the initial reservoirpressure by more than 5 MPa, such that disposal operations were suspended in late 1998. Oil productioncontinued all this time until 2002. Numerical simulations using CMG-IMEXTM and corresponding sensitivity studies reported in this papershow that disposal of more than 1 million m3 of water between 1970 and 1988 and again in 1992-1993 inthe adjacent Zama YY pool, which is in good hydrodynamic communication with the Zama X2X poolthrough the aquifer below the oil column, is the main reason for the high pressures observed in the ZamaX2X pool. Sensitivity studies indicate that pressure decay in the X2X pool was due to fluid production.The study indicates that while pressure rise has been caused by hydraulic communication between theX2X and YY pools through the common aquifer, the aquifer was not of large volume to allow dissipationof the pressure. In addition to the case study, the implications of

  17. A Cappella: A Report on the Realities, Concerns, Expectations and Barriers Experienced by Adolescent Women in Canada = A Cappella: Rapport sur les realites, preoccupations, attentes et obstacles que connaissent les adolescentes au Canada.

    Science.gov (United States)

    Canadian Teachers' Federation, Ottawa (Ontario).

    In the spring of 1990 a project was undertaken in Canada to document the major concerns and perceptions of adolescent women; to supplement the words of adolescent women with brief summaries of current knowledge; to use the words of adolescent women and the additional knowledge gathered to provide information to young women on issues which are of…

  18. Facteurs influençant l'initiation au traitement antirétroviral des personnes vivant avec le VIH dans les Centres de Traitement Agréés de Bamenda et de Bertoua au Cameroun

    Science.gov (United States)

    Mbopi-Keou, Francois-Xavier; Voundi, Esther Voundi; Kalla, Ginette Claude Mireille; Emah, Irène; Angwafo, Fru; Muna, Walinjom

    2014-01-01

    Introduction L'objectif de ce travail était de déterminer les facteurs influençant l'initiation au traitement antirétroviral des personnes vivant avec le VIH (PVVIH) dans les centres de traitements agrées (CTA) de Bamenda et de Bertoua au Cameroun. Méthodes Il s'agissait d'une étude transversale, analytique réalisée de Janvier à Avril 2011, dans les CTA de Bamenda et de Bertoua. Pour cette étude, nous avons obtenu une clairance éthique. Résultats Nous avons étudiés 460 dossiers de patients séropositifs en phase d'initiation au traitement antirétroviral dans les CTA de Bamenda et de Bertoua, 53,9% et 46,1% respectivement. L ‘âge médian était de 36 ans. La plupart des séropositifs à Bertoua (41) avaient fait un dépistage volontaire du VIH par rapport à ceux de Bamenda (22) (p= 0.008). Il y ‘avait plus de VIH de type 1 et 2 dans le CTA de Bamenda (15) par rapport à Bertoua (3) (p= 0.011). La majorité des patients était classé au stade clinique II à Bamenda (54,0%) tandis qu ‘à Bertoua le stade clinique III était prédominant (52,4%) (p = 0,000). Le taux médian de CD4 était de 133 cellules/mm3 dans le CTA de Bamenda et de 175 cellules/mm3 à Bertoua (p = 0,008). La Zidovudine était plus prescrit à Bamenda et le Ténofovir à Bertoua (p = 0,000). L ‘Efavirenz était plus prescrit à Bertoua tandis que la Névirapine l ‘était plus à Bamenda (p = 0,000). Le Lopinavir/r était plus prescrit à Bamenda qu ‘à Bertoua (p = 0,017). Conclusion Il apparait urgent de standardiser la prise en charge des PVVIH dans les CTA du Cameroun. PMID:25184023

  19. EC-STM study of the initial stages of the electrochemical Au(1 1 1)-Cd alloy formation

    DEFF Research Database (Denmark)

    Schlaup, Christian Georg; Horch, Sebastian

    2014-01-01

    (1 1 1) surface, of which the first can be described with a (4×√3) unit cell and the second one with a (3×√3) unit cell in coexistence with a (2×√3) unit cell. At more negative potentials, an alloy with the Au(1 1 1) substrate is formed. In order to obtain a deeper insight into the alloying process...

  20. Magmatic and structural controls on porphyry-style Cu-Au-Mo mineralization at Kemess South, Toodoggone District of British Columbia, Canada

    Science.gov (United States)

    Duuring, Paul; Rowins, Stephen M.; McKinley, Bradley S. M.; Dickinson, Jenni M.; Diakow, Larry J.; Kim, Young-Seog; Creaser, Robert A.

    2009-05-01

    Kemess South is the only Cu-Au-Mo mine in the Toodoggone district and a major Cu and Au producer in British Columbia. Porphyry-style Cu-Au-Mo mineralization is mainly hosted by the tabular, SW-plunging, 199.6 ± 0.6-Ma Maple Leaf granodiorite, which intrudes tightly folded, SW-dipping, Permian Asitka Group siltstone and limestone and homogeneous Triassic Takla Group basalt. Southwest-dipping 194.0 ± 0.4-Ma Toodoggone Formation conglomerate, volcaniclastic, and epiclastic rocks overlie the granodiorite and Asitka Group rocks. Minor Cu-Au-Mo mineralization is hosted by the immediate Takla Group basalt country rock, whereas low-tonnage high-grade Cu zones occur beneath a 30-m-thick leached capping in supergene-altered granodiorite and in exotic positions in overlying Toodoggone Formation conglomerate. Granodiorite has an intrusive contact with mineralized and altered Takla Group basalt but displays a sheared contact with unmineralized and less altered Asitka Group siltstone. The North Block fault is a deposit-scale, E-striking, steeply S-dipping normal fault that juxtaposes the granodiorite/basalt ore body against unmineralized Asitka Group rocks. Younger NW- and NE-striking normal-dextral faults cut all rock types, orebodies, and the North Block fault with displacements of up to 100 m and result in the graben-and-horst-style block faulting of the stratigraphy and ore body. Both basalt and granodiorite host comparable vein sequence and alteration histories, with minor variations in hydrothermal mineral assemblages caused by differing protolith chemistry. Early potassic alteration (and associated early-stage Cu ± Au ± Mo mineralization) is partly replaced by phyllic and intermediate argillic alteration associated with main-stage Cu-Au-Mo mineralization. Two main-stage veins have Re-Os molybdenite ages of 201.3 ± 1.2 and 201.1 ± 1.2 Ma. These mineralization ages overlap the 199.6 ± 0.6-Ma U-Pb zircon crystallization age for the Maple Leaf granodiorite. Late

  1. Kenya AIDS Vaccine Initiative (KAVI) : un centre d'excellence en ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Ce projet est une initiative conjointe de l'Université de Nairobi, au Kenya, et des universités du Manitoba et de Toronto, au Canada. L'objectif : faire de la Kenya AIDS Vaccine Initiative (KAVI) un centre d'excellence pour la formation aux essais de vaccins contre le VIH et à d'autres essais en matière de prévention à ...

  2. Canada Among Nations 2014 – le Canada et le système financier ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    28 mai 2014 ... Le 28e ouvrage de la collection Canada Among Nations revient sur la crise financière mondiale de 2008 et examine son impact au Canada ainsi que le rôle que le pays a joué et joue toujours au sein du système financier international.

  3. Comprendre l'expérience de lecteurs désengagés lors d'un projet de cercle de lecture au sein d'une équipe de hockey de jeunes garçons au Canada

    Directory of Open Access Journals (Sweden)

    Jolicoeur Manon

    2015-01-01

    Full Text Available Cette recherche collaborative réunissant un entraineur de hockey et une chercheuse vise à décrire l'impact de l'expérimentation d'un dispositif de cercle de lecture auprès d'une équipe de jeunes garçons francophones de 9 et 10 ans du Nouveau-Brunswick (Canada. L'étude se penche particulièrement sur le vécu de trois lecteurs désengagés participant au projet. L'analyse qualitative des données recueillies par entrevues, questionnaires et observations démontre que la motivation a été soutenue et généralisée durant toute la tenue du cercle de lecture et que les lecteurs désengagés ont évolué vers l'engagement.

  4. Factors influencing the initiation and duration of breastfeeding among low-income women followed by the Canada prenatal nutrition program in 4 regions of quebec.

    Science.gov (United States)

    Simard, Isabel; O'Brien, Huguette Turgeon; Beaudoin, André; Turcotte, Daniel; Damant, Dominique; Ferland, Suzanne; Marcotte, Marie-Josée; Jauvin, Nathalie; Champoux, Lyne

    2005-08-01

    The factors that influence the actual initiation and duration of breastfeeding were studied among low-income women followed by the Canada Prenatal Nutrition Program (CPNP). A group of 196 pregnant women were selected at random from a sample of 6223 pregnant women who registered with the CPNP. Two 24-hour recalls and information regarding lifestyle habits, peer support, and infant-feeding practices were obtained between 26 and 34 weeks of gestation and 21 days and 6 months after birth. Women who received a university education (completed or not completed) versus women with < or = high school education (odds ratio [OR], 8.40; 95% confidence interval [CI], 1.02-69.50), women born outside Canada (OR,8.81; 95% CI, 3.34-23.19), and women of low birth weight infants (OR, 0.39; 95% CI, 0.16-0.96) were more likely to initiate breastfeeding. Late introduction of solid foods (P = .004), nonsmoking (P = .005), multiparity (P = .012), and a higher level of education (P = .049) were positively associated with the duration of breastfeeding among initiators. Understanding factors associated with initiation and duration of breastfeeding among low-income women is critical to better target breastfeeding promotion.

  5. La violence sexuelle envers les enfants est-elle en baisse au Canada? Résultats d’enquêtes rétrospectives représentatives à l’échelle nationale

    Directory of Open Access Journals (Sweden)

    M. Shields

    2016-01-01

    Full Text Available Introduction : Selon de nombreuses sources de données, la violence sexuelle envers les enfants (VSE est en baisse aux États-Unis depuis le début des années 1990. Il semble par ailleurs qu’elle ait connu une hausse après la Seconde Guerre mondiale. Cette étude a pour but de faire l’examen des estimations de prévalence des cas de violence sexuelle durant l’enfance (VSdE signalés rétrospectivement dans le cadre de deux enquêtes nationales représentatives menées auprès de la population canadienne. Méthodologie : Les données proviennent de 13 931 répondants de 18 à 76 ans interrogés dans le cadre de l’enquête GENACIS (Gender, Alcohol and Culture: An International Study – Canada de 2004-2005 et de 22 169 résidents âgés de 18 ans et plus ayant participé à l’Enquête sur la santé dans les collectivités canadiennes – Santé mentale (ESCC – Santé mentale de 2012. Nous présentons des comparaisons de la prévalence de la VSdE par sexe et par groupe d’âge à la fois entre ces deux enquêtes et au sein de chacune. Résultats : Les résultats des deux enquêtes indiquent une baisse de la VSE depuis 1993, qui va de pair avec la baisse observée aux États-Unis. Il ressort également des résultats que le risque de VSE était plus élevé entre 1946 et 1992 qu’avant 1946. Les données sont plus solides pour les femmes. Conclusion : Constater une baisse de la VSE au Canada depuis le début des années 1990 est encourageant, étant donné les effets débilitants à long terme qui sont associés à la VSE. Une surveillance continue est essentielle. Ces effets négatifs à long terme sont la preuve de l’importance de poursuivre sur cette lancée, pour passer d’un risque faible à un risque nul.

  6. Enquête sur les personnes ayant une maladie chronique au Canada – Composante des troubles de l’humeur et d’anxiété, 2014 : aperçu de la méthodologie

    Directory of Open Access Journals (Sweden)

    S. O’Donnell

    2016-01-01

    Full Text Available Introduction : Il existe peu de données à propos des répercussions des troubles de l’humeur et d’anxiété sur les Canadiens et sur la gestion de ces troubles. L’Enquête sur les personnes ayant une maladie chronique au Canada – Composante des troubles de l’humeur et d’anxiété (EPMCC-THA de 2014 a été élaborée pour combler les lacunes à ce chapitre. Le but du présent article est de décrire la méthodologie de l’EPMCC-THA de 2014 et de présenter les caractéristiques sociodémographiques de l’échantillon final. Méthodologie : L’EPMCC-THA de 2014 est une enquête transversale de suivi menée auprès de Canadiens des 10 provinces âgés de 18 ans et plus qui souffrent d’un trouble de l’humeur ou d’anxiété diagnostiqué par un professionnel de la santé et dont on s'attend à ce qu'il dure (ou durant depuis déjà six mois ou plus. L’enquête a été élaborée par l’Agence de la santé publique du Canada (ASPC au moyen d’un processus itératif et consultatif avec Statistique Canada et des experts externes. Statistique Canada a mis à l’essai le contenu, a conçu la base et les stratégies d’échantillonnage et a recueilli et traité les données. L’ASPC a procédé à des analyses descriptives pour déterminer les caractéristiques sociodémographiques des répondants, a produit des estimations représentatives à l’échelle nationale à l’aide des coefficients de pondération fournis par Statistique Canada et a produit des estimations de la variance à l’aide de la méthode bootstrap. Résultats : L’échantillon final de l’EPMCC-THA de 2014 était constitué de 3 361 répondants (taux de réponse de 68,9 %. Parmi ceux qui vivaient avec un trouble de l'humeur ou d'anxiété, près des deux tiers (64 % étaient des femmes, plus de la moitié (56 % étaient mariés ou vivaient en union libre et 60 % avaient obtenu un diplôme d’études postsecondaires. La plupart étaient jeunes ou d

  7. Alliance members' roles in collective field-building: an assessment of leadership and championship within the Population Health Intervention Research Initiative for Canada.

    Science.gov (United States)

    Di Ruggiero, Erica; Kishchuk, Natalie; Viehbeck, Sarah; Edwards, Nancy; Robinson, Kerry; Riley, Barbara; Fowler, Heather Smith

    2017-12-06

    The Population Health Intervention Research Initiative for Canada (PHIRIC) is a multi-stakeholder alliance founded in 2006 to advance population health intervention research (PHIR). PHIRIC aimed to strengthen Canada's capacity to conduct and use such research to inform policy and practice to improve the public's health by building PHIR as a field of research. In 2014, an evaluative study of PHIRIC at organisational and system levels was conducted, guided by a field-building and collaborative action perspective. The study involved 17 qualitative key informant interviews with 21 current and former PHIRIC Planning Committee and Working Group members. The interviews examined how individuals and organisations were acting as champions and exerting leadership in building the field of PHIR. Founding PHIRIC organisational members have been championing PHIR at organisational and system levels. While the PHIR field has progressed in terms of enhanced funding, legitimacy, profile and capacity, some members and organisations faced constraints and challenges acting as leaders and champions in their respective environments. Expectations about the future of PHIRIC and field-building of PHIR were mixed, where longer-term and founding members of PHIRIC expressed more optimism than recent members. All agreed on the need for incorporating perspectives of decision-makers into PHIR directions and initiatives. The findings contribute to understanding alliance members' roles in leadership and championship for field-building more generally, and for population health and PHIR specifically. Building this field requires multi-level efforts, collaborative action and distributed leadership to create the necessary conditions for PHIRIC members to both benefit from and contribute to advancing PHIR as a field. Lessons from this 'made in Canada' model may be of interest to other countries regarding the structures needed for PHIR field-building.

  8. Les coûts du diabète sur 10 ans au Canada : intégration des coûts en soins de santé imputables au diabète à un modèle de prédiction de son incidence

    Directory of Open Access Journals (Sweden)

    Anja Bilandzic

    2017-01-01

    Full Text Available Introduction : Notre objectif était d’estimer les coûts de santé directs liés au traitement du diabète au Canada sur 10 ans, à l’aide de données de sondages nationaux et d’un outil de prévision du risque de diabète, ainsi que les coûts par personne. Méthodologie : Nous avons utilisé le Diabetes Population Risk Tool pour estimer le nombre de nouveaux cas de diabète chez les personnes âgées de 20 ans et plus sur 10 ans (jusqu'en 2022 à l’aide des données de 2011 et de 2012 de l’Enquête sur la santé dans les collectivités canadiennes. Nous avons évalué les coûts liés au diabète à partir d’une étude de cohorte faisant appel à l’appariement par score de propension, en utilisant la base de données sur le diabète de l’Ontario ainsi que d’autres données administratives. Nous avons calculé les coûts totaux en utilisant les coûts associés aux nouveaux cas, en tenant compte du sexe, de l’année du diagnostic et des taux de mortalité annuels dus à la maladie. Résultats : D'après nos calculs, le risque de développer le diabète sur 10 ans s’élevait pour la population canadienne en 2011-2012 à 9,98 %, soit 2,16 millions de nouveaux cas. Les coûts totaux en soins de santé imputables au diabète pendant cette période sont de 15,36 milliards (7,55 milliards pour les femmes et 7,81 milliards pour les hommes. Ce sont les hospitalisations de courte durée qui constituent la majeure partie de ces coûts (43,2 %. Des interventions menées au sein de la population entraînant une perte de poids de 5 % au sein de la population permettraient de réduire les coûts des soins de santé de 2,03 milliards de dollars. Une réduction du risque de 30 % obtenue grâce à des interventions auprès des personnes à plus haut risque de développer le diabète (c.-à-d. les 10 % au sommet du groupe à risque le plus élevé entraînerait des économies de l’ordrede 1,48 million de dollars. Conclusion : D'ici 2022

  9. La Politique audiovisuelle en Irlande et au Canada face à l’impérialisme culturel américain Broadcasting Policies in Ireland and Canada in Response to American Cultural Imperialism

    Directory of Open Access Journals (Sweden)

    Alexandra Slaby

    2009-10-01

    Full Text Available Ireland and Canada face the common challenge of having to protect their cultural production which is a cornerstone of their national identity from American attempts at breaking down any barrier preventing the free circulation of goods and services, including culture. Canada—and especially Québec—has developed a tradition of loud and vocal opposition to what is perceived as American cultural imperialism. On the other hand, Ireland is less critical of the occupation of its audiovisual space by American productions on the strength of its historical ties with the United States. In Ireland, broadcasting comes under the control auspices of a government department which is not otherwise related to cultural issues. The ruling party Fianna Fáil has adopted a purely liberal approach to its national broadcaster, whereas, on the other side of the Atlantic, Canadian official discourse on the matter has grown closer to the European notion of a cultural exception or exemption in favour of culture in order to preserve the core of national identities in the face of globalization.

  10. Le syndrome de fatigue chronique et la fibromyalgie au Canada : prévalence et associations avec six indicateurs de l'état de santé

    Directory of Open Access Journals (Sweden)

    C. Rusu

    2015-01-01

    Full Text Available Introduction : Peu d'études ont traité, à l'aide de données populationnelles, des facteurs associés de façon indépendante au syndrome de fatigue chronique (SFC et à la fibromyalgie (FM ou des répercussions de ces affections sur l'état de santé. Méthodologie : Nous avons utilisé les données de l'Enquête sur la santé dans les collectivités canadiennes de 2010 (n=59 101, représentative de la population à l'échelle nationale, pour décrire les cas autodéclarés de SFC et de FM diagnostiqués par un professionnel de la santé et pour déterminer les associations de ces affections avec six indicateurs de l'état de santé. Résultats : En 2010, 1,4 % (intervalle de confiance [IC] à 95 % : 1,3 % à 1,6 % des Canadiens de 12 ans ou plus vivant à domicile ont déclaré avoir reçu un diagnostic de SFC,1,5 % (IC à 95 %: 1,4 % à 1,7 % de FM, et 0,3 % (IC à 95 %: 0,3 % à 0,4 % a déclaré être atteinte à la fois de SFC et de FM. Les cas de SFC comme ceux de FM étaient plus fréquents chez les femmes, les adultes de 40 ans ou plus, les personnes à faible revenu et les personnes présentant certains facteurs de risque de maladie chronique (obésité, sédentarité et tabagisme. Après ajustement en fonction des différences existant entre les groupes, les personnes ayant déclaré être atteintes du SFC ou de FM ou des deux avaient un moins bon état de santé que les personnes atteintes d'aucune de ces affections pour cinq indicateurs de l'état de santé, mais aucune différence n'a été trouvée entre ces groupes par rapport à l'indicateur de santé mentale. Le fait d'être atteint à la fois du SFC et de FM et de présenter de multiples affections comorbides était associé à un moins bon état de santé. Conclusion : La présence concomitante du SFC, de la FM et d'autres affections chroniques était étroitement associée au fait d'avoir un moins bon état de santé, et les différences relatives à l'état de santé

  11. Posthole Sensor Performance in the USArray Transportable Array - Results from Testing and Initial Deployments in Alaska and Canada

    Science.gov (United States)

    Frassetto, A.; Busby, R. W.; Hafner, K.; Sauter, A.; Woodward, R.

    2014-12-01

    To prepare for the deployment of EarthScope's USArray Transportable Array (TA) in Alaska and adjacent Canada over the next several years, IRIS has evaluated different strategies for emplacing posthole seismometers. The goal of this work has been to maintain or enhance a TA station's noise performance while reducing the weight and logistical considerations required for its installation. Motivating this research are developments in posthole broadband seismometer design and the unique conditions for operating in this region, where many potential sites are located on frost-fractured outcrops or underlain by permafrost, in either case only accessible by helicopter. Current emplacement methods use a portable rig to auger or hammer-drill a hole 2.5-5 meters deep, in unconsolidated materials and permafrost, or by diamond bit coring 1-3 meters into rock. These emplacements are used at new TA installations and upgrades to existing AK network stations, and we compare their performance to the lower-48 TA vault installations. Through July 2014 there are eight TA and six upgraded AK stations operating under USArray; including five since at least October 2012, providing a detailed record of seasonal and/or site-specific behavior. We also discuss testing of different downhole configurations for 13 stations deployed at Piñon Flat Observatory in California since April 2014. Station performance is presented and compared using probability density functions summed from hourly power spectral density calculations. These are computed for the continuous time series of seismic data recorded on each seismic channel. Our results show that the noise performance of seismometers in Alaska with cased- or core- hole installations sometimes exceeds that of the quietest TA stations in the lower-48, particularly for the horizontal channels at long periods. We analyze and discuss the performance of example stations, comparing to other nearby seismometers. We also examine the performance of AK

  12. Decreased health care utilization and health care costs in the inpatient and emergency department setting following initiation of ketogenic diet in pediatric patients: The experience in Ontario, Canada.

    Science.gov (United States)

    Whiting, Sharon; Donner, Elizabeth; RamachandranNair, Rajesh; Grabowski, Jennifer; Jetté, Nathalie; Duque, Daniel Rodriguez

    2017-03-01

    To assess the change in inpatient and emergency department utilization and health care costs in children on the ketogenic diet for treatment of epilepsy. Data on children with epilepsy initiated on the ketogenic diet (KD) Jan 1, 2000 and Dec 31, 2010 at Ontario pediatric hospitals were linked to province wide inpatient, emergency department (ED) data at the Institute for Clinical Evaluative Sciences. ED and inpatient visits and costs for this cohort were compared for a maximum of 2 years (730days) prior to diet initiation and for a maximum of 2 years (730days) following diet initiation. KD patient were compared to matched group of children with epilepsy who did not receive the ketogenic diet (no KD). Children on the KD experienced a mean decrease in ED visits of 2.5 visits per person per year [95% CI (1.5-3.4)], and a mean decrease of 0.8 inpatient visits per person per year [95% CI (0.3-1.3)], following diet initiation. They had a mean decrease in ED costs of $630 [95% CI (249-1012)] per person per year and a median decrease in inpatient costs of $1059 [IQR: 7890; pdiet experienced a mean reduction of 2.1 ED visits per child per year [95% CI (1.0-3.2)] and a mean decrease of 0.6 [95% CI (0.1-1.1)] inpatient visits per child per year. Patients on the KD experienced a reduction of $442 [95% CI (34.4-850)] per child per year more in ED costs than the matched group. The ketogenic diet group had greater median decrease in inpatient costs per child per year than the matched group [pketogenic diet, experienced decreased ED and inpatient visits as well as costs following diet initiation in Ontario, Canada. Copyright © 2017 Elsevier B.V. All rights reserved.

  13. Extending stakeholder theory to promote resource management initiatives to key stakeholders: a case study of water transfers in Alberta, Canada.

    Science.gov (United States)

    Lafreniere, Katherine C; Deshpande, Sameer; Bjornlund, Henning; Hunter, M Gordon

    2013-11-15

    Many attempts to implement resource management initiatives in Canadian and international communities have been resisted by stakeholders despite inclusion of their representatives in the decision-making process. Managers' failure to understand stakeholders' perspectives when proposing initiatives is a potential cause of this resistance. Our study uses marketing thought to enhance stakeholder theory by bringing in an audience-centric perspective. We attempt to understand how stakeholders perceive their interests in an organization and consequently decide how to influence that organization. By doing so, we investigate whether a disconnect exists between the perceptions of managers and those of stakeholders. Natural resource managers can utilize this knowledge to garner stakeholder support for the organization and its activities. We support this claim with findings from a water transfer plebiscite held in the Canadian province of Alberta. Sixteen personal interviews employing narrative inquiry were conducted to document voters' (i.e., irrigators') interpretations. Copyright © 2013 Elsevier Ltd. All rights reserved.

  14. Immigrants’ initial firm allocation and earnings growth

    Directory of Open Access Journals (Sweden)

    Wen Ci

    2017-05-01

    Full Text Available While employers are playing an increasingly important role in immigration selection in Canada, little is known about how firm-level characteristics affect the economic integration of immigrants. Using a Canadian employer–employee matched dataset, this paper considers whether immigrants initially employed in low-paying firms in Canada experienced inferior earnings growth than those initially employed in high-paying firms. The results show that the large earnings differential observed between immigrants initially employed in low- and high-paying firms diminished only slightly over the subsequent 14 years, even when differences in demographic and general human capital characteristics are taken into account. Alors que les employeurs jouent un rôle de plus en plus important dans la sélection des immigrants qui s’établissent au Canada, on en sait peu sur la façon dont les caractéristiques au niveau de l’entreprise influencent l’intégration économique de ces derniers. Au moyen d’un ensemble de données appariées sur les employeurs et les employés, le présent document vise à déterminer si la croissance des gains des immigrants employés initialement au Canada par des entreprises à bas salaires est plus faible que celle des gains des immigrants employés au départ par des entreprises à hauts salaires. Les résultats montrent que l’écart important observé entre les gains des immigrants employés au départ par des entreprises à bas salaires et de ceux employés par des entreprises à hauts salaires ne diminuait que légèrement au cours des 14 années suivantes, même après avoir tenu compte des différences de caractéristiques démographiques et de caractéristiques générales du capital humain.

  15. Initial environmental impacts of the Obed Mountain coal mine process water spill into the Athabasca River (Alberta, Canada).

    Science.gov (United States)

    Cooke, Colin A; Schwindt, Colin; Davies, Martin; Donahue, William F; Azim, Ekram

    2016-07-01

    On October 31, 2013, a catastrophic release of approximately 670,000m(3) of coal process water occurred as the result of the failure of the wall of a post-processing settling pond at the Obed Mountain Mine near Hinton, Alberta. A highly turbid plume entered the Athabasca River approximately 20km from the mine, markedly altering the chemical composition of the Athabasca River as it flowed downstream. The released plume traveled approximately 1100km downstream to the Peace-Athabasca Delta in approximately four weeks, and was tracked both visually and using real-time measures of river water turbidity within the Athabasca River. The plume initially contained high concentrations of nutrients (nitrogen and phosphorus), metals, and polycyclic aromatic hydrocarbons (PAHs); some Canadian Council of Ministers of the Environmental (CCME) Guidelines were exceeded in the initial days after the spill. Subsequent characterization of the source material revealed elevated concentrations of both metals (arsenic, lead, mercury, selenium, and zinc) and PAHs (acenaphthene, fluorene, naphthalene, phenanthrene, and pyrene). While toxicity testing using the released material indicated a relatively low or short-lived acute risk to the aquatic environment, some of the water quality and sediment quality variables are known carcinogens and have the potential to exert negative long-term impacts. Copyright © 2016 The Authors. Published by Elsevier B.V. All rights reserved.

  16. Initial results of VLF Campaign observation with High-resolution Aurora Imaging Network (VLF-Chain) over Canada

    Science.gov (United States)

    Shiokawa, Kazuo

    2012-07-01

    Whistler-mode waves in the VLF/ELF frequency range interact with high-energy (~10 keV) electrons to cause diffuse and pulsating auroras, and with MeV electrons in the radiation belts. However, simultaneous high-time resolution measurements of aurora and these waves have previously not been done sufficiently. We made a campaign observation of such high-time resolution measurements at Athabasca (54.72N, 246.69E, MLAT=61.3) and Fort Vermillion (58.38N, 243.99E, MLAT=64.5) using two loop antennas and several auroral cameras for February 16-26, 2012. The loop antennas at both stations measure east-west and north-south magnetic field variations with a sampling rate of 100 kHz. The panchromatic all-sky cameras at both stations measure auroras with a sampling rate of 30 Hz. The sampling timings of both instruments are corrected by GPS receivers. In addition we installed an oblique looking narrow-FoV EMCCD camera at Athabasca with a sampling rate of 100 Hz, to measure height variation of pulsating aurora. At Athabasca, routine measurements by an induction magnetometer, a proton photometer, an all-sky airglow imager, LF standard wave receiver, were also carried out. We also tried to compare these observations with satellite measurements by REIMEI, THEMIS, NOAA, and DMSP. In this presentation we will show initial results obtained from this comprehensive campaign of aurora and radio wave measurements at subauroral latitudes.

  17. Observations Issues de L’évaluation des Risques pour la Santé que Comporte la Présence d’Escherichia coli O157 dans les Produits de Bœuf Attendris Mécaniquement au Canada

    OpenAIRE

    Catford, Angela; Lavoie, Marie-Claude; Smith, Ben; Buenaventura, Enrico; Couture, Hélène; Farber, Aamir Fazil et le Dr Jeffrey M.

    2013-01-01

    Au Canada, à la fin de 2012, un total de 18 cas de maladies d’origine alimentaire provoquées par Escherichia coli O157 (E. coli O157) ont été signalés dans le cadre d’une éclosion causée par du bœuf contaminé. Au cours de l’enquête sur la salubrité alimentaire relative à l’éclosion, la consommation de bœuf attendri mécaniquement (BAM) chez des détaillants a été mise en cause dans de quelques cas. Les détails de cette enquête et du suivi afférent sont consultables en ligne sur le site Web de l...

  18. Description du fardeau de la dépression sur la santé de la population au Canada : utilisation de l’espérance de vie ajustée en fonction de la santé

    Directory of Open Access Journals (Sweden)

    C. Steensma

    2016-01-01

    EVAS à 20 ans était de 42,0 ans (IC à 95 % : 40,2 à 43,8, contre 57,0 ans (IC à 95 % : 56,8 à 57,2 chez les femmes n’ayant pas vécu récemment d’épisode de dépression majeure. Au sein de la population masculine canadienne, l’EVAS à 20 ans était de 39,0 ans (IC à 95 % : 36,5 à 41,5 chez ceux qui avaient connu récemment un épisode de dépression majeure, contre 53,8 ans (IC à 95 % : 53,6 à 54,0 chez ceux n’ayant pas connu récemment d’épisode de dépression majeure. La différence de 15 ans dans l’EVAS des femmes avec et sans épisode récent de dépression majeure peut se décomposer en 12,3 ans attribuables à l’écart de la QVLS et 2,7 ans à l’écart observé en matière de mortalité. Les 14,8 années de moins d’EVAS chez les hommes ayant souffert de dépression correspondent à un écart de la QVLS de 13 ans et à un écart de mortalité de 1,8 an. Conclusion : La population canadienne adulte atteinte de dépression au Canada avait une espérance de vie en santé considérablement plus faible que celle ne souffrant pas de dépression, chez les hommes comme chez les femmes. Si la majeure partie de cet écart s’explique par des niveaux moins élevés de la QVLS, la mortalité prématurée joue également un rôle.

  19. Constructing a Multicultural Identity at the Canadian Frontier: Mordecai Richler and Jewish-Canadian Writing La construction d’une identité multiculturelle sur la Frontière canadienne : Mordecai Richler et l’écriture juive au Canada

    Directory of Open Access Journals (Sweden)

    Julie Spergel

    2009-10-01

    Full Text Available Tout au long de ses cinquante années de carrière, Mordecai Richler a critiqué sans relâche le Canada. Dans un premier temps, il accusa son pays natal de ne pas avoir d’identité ; puis il s’en moqua parce qu’il essayait un peu trop consciencieusement de s’en créer une. Comme de nombreux Juifs de sa génération, Richler souffrait d’une double complexité historique liée à ses rôles en apparence incompatibles de Juif et de Canadien. Ses écrits de fiction reflètent les changements qui ont eu lieu dans un Canada alors lancé dans sa quête d’identité nationale et lui-même perdu quelque part entre les Etats-Unis et la Grande-Bretagne. Le Canada commença à rechercher une/son « individualité » en encourageant la création d’une culture littéraire dont le rôle était d’unir un peuple, puis, plus tard, à travers les efforts du gouvernement, de construire une mythologie (discours ou rhétorique nationaux au sein de laquelle fut introduit ultérieurement le multiculturalisme. Rétrospectivement, on peut aller jusqu’à suggérer que Richler a prédit la voie finalement adoptée par son pays : tandis que ses protagonistes apprennent à être des Juifs se définissant comme un peu plus que des « on-Goyim » et se caractérisent par leur propre système de valeurs et d’actions, le Canada a appris à se définir à travers le multiculturalisme. Si l’on éclaire le multiculturalisme canadien à la lumière de la théorie des Frontières juives développée par Sander L. Gilman, l’écriture juive au Canada fournit une illustration de ce multiculturalisme et offre un modèle de réconciliation du conflit entre mythologies nationale et culturelle.

  20. The 2016 Canada-Sweden Polar Expedition: Initial results of seismic reflection and refraction experiments over the Lomonosov Ridge and Marvin Spur

    Science.gov (United States)

    Funck, Thomas; Shimeld, John; Hopper, John R.; Chian, Deping

    2017-04-01

    In August and September 2016, Canada and Sweden collaborated in a scientific expedition to the Arctic Ocean utilizing two polar class icebreakers: the Swedish Oden and the Canadian Coast Guard Ship Louis S. St-Laurent. Each ship was equipped with comparable systems for collecting seismic reflection and refraction data, giving a high degree of operational flexibility and spare equipment capacity in the field. A total of three helicopters supported the deployment and recovery of sonobuoys and on-ice seismometer stations (equipped with two hydrophones and a vertical geophone) along the seismic lines. A principal scientific objective is to improve understanding of the tectonic evolution of the Arctic Ocean, which will ultimately help to define the Extended Continental Shelf of Canada. A key region to further this objective lies between the Lomonosov and Alpha ridges. The expedition collected a continuous seismic profile running from the Amundsen Basin, across the Lomonosov Ridge and sub-parallel Marvin Spur, through the Makarov Basin and onto the central Alpha Ridge. A second profile of the Lomonosov Ridge was acquired, and a cross-line joining the two was also run along much of the Marvin Spur. The combined length of these reflection and refraction lines is 1037 km. A total of 33 sonobuoys and five on-ice seismometer stations were used successfully to record the airgun shots (source volume between 1150 and 2000 cubic inches), which were fired at a maximum interval of 20 seconds. The data will provide information on the continent-ocean transition zone at the Eurasian flank of the Lomonosov Ridge between Chron C24 and the more controversially discussed Chron C25. Is C25 a true seafloor spreading anomaly or is the anomaly related to serpentinization processes? A dense receiver spacing of 15 km and reversed observations will provide details on the crustal structure of Marvin Spur and will show how much the spur was affected by magmatism associated with the High Arctic

  1. Gender inequities in quality of care among HIV-positive individuals initiating antiretroviral treatment in British Columbia, Canada (2000-2010.

    Directory of Open Access Journals (Sweden)

    Allison Carter

    Full Text Available OBJECTIVES: We measured gender differences in "Quality of Care" (QOC during the first year after initiation of antiretroviral therapy and investigated factors associated with poorer QOC among women. DESIGN: QOC was estimated using the Programmatic Compliance Score (PCS, a validated metric associated with all-cause mortality, among all patients (≥19 years who initiated ART in British Columbia, Canada (2000-2010. METHODS: PCS includes six indicators of non-compliance with treatment initiation guidelines at baseline (not having drug resistance testing before treatment; starting on a non-recommended regimen; starting therapy at CD4<200 cells/mm3 and during first-year follow-up (receiving <3 CD4 tests; receiving <3 viral load tests; not achieving viral suppression within six months. Summary scores range from 0-6; higher scores indicate poorer QOC. Multivariable ordinal logistic regression was used to measure if female gender was an independent predictor of poorer QOC and factors associated with poorer QOC among women. RESULTS: QOC was determined for 3,642 patients (20% women. At baseline: 42% of women (34% men did not have resistance testing before treatment; 17% of women (9% men started on a non-recommended regimen (all p<0.001. At follow-up: 17% of women (11% men received <3 CD4; 17% of women (11% men received <3 VL; 50% of women (41% men did not achieve viral suppression (all p<0.001. Overall, QOC was better among men (mean PSC = 1.54 (SD = 1.30 compared with women (mean = 1.89 (SD = 1.37; p<0.001. In the multivariable model, female gender (AOR = 1.16 [95% CI: 0.99-1.35]; p = 0.062 remained associated with poorer QOC after covariate adjustment. Among women, those with injection drug use history, of Aboriginal ancestry, from Vancouver Island, and who initiated ART in earlier years were more likely to have poorer QOC. CONCLUSIONS: Poorer QOC among women, especially from marginalized communities, demands that barriers

  2. Essai randomisé mesurant l'efficacité des modifications apportées au tableau de la valeur nutritive sur la compréhension et l'utilisation de l'information nutritionnelle par les adolescents et les jeunes adultes au Canada

    Directory of Open Access Journals (Sweden)

    E. Hobin

    2015-01-01

    Full Text Available Introduction: Compte tenu des changements proposés à l'étiquetage nutritionnel au Canada et de la rareté des travaux de recherche portant sur la compréhension et l'utilisation des tableaux de la valeur nutritive (tVN chez les adolescents et les jeunes adultes, notre objectif consistait à réaliser un essai expérimental pour déterminer si les modifications apportées au tVN permettaient d'améliorer efficacement la façon dont les jeunes Canadiens interprètent, comparent et manipulent, sur le plan mathématique, l'information nutritionnelle figurant dans le tVN de denrées préemballées. Méthodologie : Une enquête en ligne a été menée auprès d'un échantillon de consommateurs composé de 2 010 Canadiens âgés de 16 à 24 ans. Nous avons réparti les participants de façon aléatoire en six groupes d'étude, et nous avons présenté à chacun des groupes deux des six tVN définis comme conditions expérimentales, selon un plan factoriel 2 × 3 : portion de référence (tVN actuel et portions de référence normalisées pour tous les produits similaires × pourcentage de la valeur quotidienne (% VQ (tVN actuel, ajout des descripteurs « faible/moyen/élevé » et ajout d'un code de couleurs. L'enquête comprenait sept tâches consistant à interpréter, comparer et manipuler, sur le plan mathématique, l'information nutritionnelle figurant dans les tVN. Des modèles de régression de Poisson modifiés ont été élaborés pour chacun des trois résultats. Résultats : La capacité à comparer deux produits similaires s'est révélée significativement meilleure quand le tVN incluait une portion de référence normalisée (p ≤ 0,001 dans tous les cas. L'ajout de descripteurs ou d'un code de couleurs indiquant, sur le tVN, le % VQ pour les calories et les nutriments a amélioré de façon significative la capacité des participants à interpréter correctement l'information à propos de ce % VQ (p ≤ 0,001 dans tous les cas. Le

  3. Initial in vitro and in vivo assessment of Au@DTDTPA-RGD nanoparticles for Gd-MRI and 68Ga-PET dual modality imaging

    Energy Technology Data Exchange (ETDEWEB)

    Tsoukalas, Charalmpos [National Center for Scientific Research ' Demokritos' (Greece); Laurent, Gautier; Jiménez Sánchez, Gloria [Université de Franche-Comté, Institut UTINAM (France); Tsotakos, Theodoros [National Center for Scientific Research ' Demokritos' (Greece); Bazzi, Rana [Université de Franche-Comté, Institut UTINAM (France); Stellas, Dimitris; Anagnostopoulos, Constantinos [Biomedical Research Foundation, Academy of Athens (Greece); Moulopoulos, Lia; Koutoulidis, Vasilis [Department of Radiology, Areteion Hospital, University of Athens Medical School (Greece); Paravatou-Petsotas, Maria; Xanthopoulos, Stavros [National Center for Scientific Research ' Demokritos' (Greece); Roux, Stephane [Université de Franche-Comté, Institut UTINAM (France); Bouziotis, Penelope [National Center for Scientific Research ' Demokritos' (Greece)

    2015-05-18

    Gadolinium chelate coated gold nanoparticles (Au@DTDTPA) can be applied as contrast agents for both in vivo X-ray and magnetic resonance imaging. In this work, our aim was to radiolabel and evaluate this gold nanoparticle with Ga-68, in order to produce a dual modality PET/MRI imaging probe. For a typical preparation of 68Ga-labeled nanoparticles, the Au@DTDTPA nanoparticles (Au@DTDTPA/Au@DTDTPA-RGD) were mixed with ammonium acetate buffer, pH 5 and 40 MBq of 68Ga eluate. The mixture was then incubated for 45 min at 65 ÅãC. Radiochemical purity was determined by ITLC. In vitro stability of both radiolabeled species was assessed in saline and serum. In vitro cell binding experiments were performed on integrin ανβ3 receptor-positive U87MG cancer cells. Non-specific Au@DTDTPA was used for comparison. Ex vivo biodistribution studies and in vivo PET and MRI imaging studies in U87MG tumor-bearing SCID mice followed. The Au@DTDTPA nanoparticles were labeled with Gallium-68 at high radiochemical yield (>95%) and were stable at RT, and in the presence of serum, for up to 3 h. The cell binding assay on U87MG glioma cells proved that 68Ga-cRGD-Au@DTDTPA had specific recognition for these cells. Biodistribution studies in U87MG tumor-bearing SCID mice showed that the tumor to muscle ratio increased from 1 to 2 h p.i. (3,71 ± 0.22 and 4,69 ± 0.09 respectively), showing a clear differentiation between the affected and the non-affected tissue. The acquired PET and MRI images were in accordance to the ex vivo biodistribution results. The preliminary results of this study warrant the need for further development of Au@DTDTPA nanoparticles radiolabeled with Ga-68, as possible dual-modality PET/MRI imaging agents.

  4. Determination of elemental baseline using peltigeralean lichens from Northeastern Canada (Québec): Initial data collection for long term monitoring of the impact of global climate change on boreal and subarctic area in Canada.

    Science.gov (United States)

    Darnajoux, Romain; Lutzoni, François; Miadlikowska, Jolanta; Bellenger, Jean-Philippe

    2015-11-15

    Northeastern Canada is mostly free of anthropogenic activities. The extent to which this territory has been impacted by anthropogenic atmospheric depositions remains to be studied. The main goal of our study was to establish background levels for metals in boreal muscicolous/terricolous macrolichens over non-urbanized areas of northeastern Canada (Québec). Concentrations of 18 elements (Na, Mg, Al, P, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Mo, Cd, and Pb) were determined for three species of the genus Peltigera (Peltigera aphthosa (L.) Willd. s.l., Peltigera neopolydactyla (Gyeln.) Gyeln. s.l., Peltigera scabrosa Th. Fr. s.l.), and Nephroma arcticum (L.) Torss., along a 1080 km south-north transect and along a of 730 km west-east transect. We report that elemental contents in the sampled lichen thalli are very low and similar to background levels found in other studies performed in pristine places (high elevation or remote ecosystems) throughout the world. Overall, our results demonstrate that most of the boreal and subarctic zone of Québec (northeastern Canada) is still pristine. The elemental baseline established in these lichen populations will contribute to monitor metal pollution in boreal and sub-polar ecosystems due to global climate change and future industrial expansion. Copyright © 2015 Elsevier B.V. All rights reserved.

  5. "Dealloying" Phase Separation during Growth of Au on Ni(110)

    DEFF Research Database (Denmark)

    Nielsen, L. Pleth; Besenbacher, Flemming; Stensgaard, I.

    1995-01-01

    Combined scanning tunneling microscopy and ion-scattering studies have revealed a new "dealloying" phase transition during the growth of Au on Ni(110). The Au atoms, which initially alloy into the Ni(110) surface, phase separate into a vacancy-stabilized Au dimer-trimer chain structure at Au...

  6. Publication Canada Among Nations, de 2012 à 2014 | CRDI ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Université Carleton à Ottawa, à faire paraître trois volumes de Canada Among Nations (CAN), ouvrage dont on a dit qu'il s'agissait des meilleures annales publiées au pays sur les relations internationales du Canada. Chaque année, CAN ...

  7. Initier au projet par le jeu. Evaluation d’une expérimentation en école d’ingénieurs

    Directory of Open Access Journals (Sweden)

    Caroline Verzat

    2009-09-01

    Full Text Available Cette communication s’appuie sur une recherche-action menée à l’automne 2006 auprès des élèves ingénieurs de l’Ecole Centrale de Lille (Bac + 3 et 4. Elle évalue l’impact d’un jeu de construction utilisant des spaghettis sur la capacité des équipes d’étudiants à émettre des idées créatives, à constituer des groupes, à gérer leurs relations au sein de ces groupes et à apprendre de leurs expériences. L’impact du jeu est mesuré par l’analyse des retours d’expérience en séance, puis par le suivi des équipes de projet réel qui démarrent ensuite. Sont examinés la composition des équipes, l’origine des sujets six semaines plus tard, puis les auto-évaluations du travail en équipe au bout de trois mois.This paper is based on an action-research, conducted with students in engineering at the Ecole Centrale de Lille in 2006. The aim of this paper is to evaluate the effects of a construction game using spaghettis on the students’ capacity to suggest creative ideas, to build and manage their team work and to learn from experience. These effects are measured through the immediate feedbacks on the game and the management of real project teams after the game. Items such as the composition of the teams, the origins of their subject six weeks later and self-evaluations of team management after 3 month are examined.

  8. Adaptation, mise à l'épreuve et évaluation d'interventions complexes en santé publique : leçons tirées du Nurse-Family Partnership dans le secteur de la santé publique au Canada

    Directory of Open Access Journals (Sweden)

    S. M. Jack

    2015-01-01

    Full Text Available Introduction : Le Nurse-Family Partnership (NFP est un programme de visites à domicile destiné aux nouvelles jeunes mères défavorisées sur le plan socioéconomique. Les données issues de trois essais contrôlés randomisés (ECR américains ont solidement démontré l'efficacité des interventions quant à l'amélioration de l'issue de la grossesse, de la santé et du développement des enfants ainsi que de l'autonomie économique des mères. Cependant, l'efficacité du NFP dans le contexte canadien des services de santé et des services sociaux, qui diffère de celui des États-Unis, reste à déterminer. Cet article vise à décrire le processus complexe suivi pour adapter la recherche sur le NFP et mettre ainsi en œuvre ce programme au Canada. Méthodologie : L'évaluation menée au Canada se divise en trois étapes : 1 adaptation de l'intervention, 2 mise à l'épreuve de l'intervention dans des études de faisabilité et d'acceptabilité à petite échelle et 3 réalisation d'un ECR et d'une évaluation du processus dans le cadre de l'étude intitulée British Columbia Healthy Connections Project (BCHCP. Cette évaluation à grande échelle permettra d'enrichir la base de données probantes du NFP par la tenue d'une étude supplémentaire sur les mécanismes biologiques susceptibles de témoigner de la relation entre l'intervention et les effets sur le comportement des enfants. Résultats : L'adaptation de la documentation du NFP pour les visites à domicile est un processus continu. Un projet pilote a montré la faisabilité du recrutement des femmes admissibles au NFP. Il a aussi révélé qu'il était préférable au Canada que le NFP soit mis en œuvre par les organismes de santé publique et que les infirmières et infirmiers en santé publique (ISP s'occupent des interventions. Enfin, il a montré que ce programme intensif de visites à domicile a bénéficié d'une réception positive de la part des clientes, des membres de

  9. Declining Mortality Rates in HIV-Infected People Who Inject Drugs During a Seek-and-Treat Initiative in Vancouver, Canada, 1996-2014: A Prospective Cohort Study.

    Science.gov (United States)

    Hayashi, Kanna; Dong, Huiru; Kerr, Thomas; Dobrer, Sabina; Guillemi, Silvia; Barrios, Rolando; Montaner, Julio S G; Wood, Evan; Milloy, M-J

    2017-12-27

    We estimated rates and predictors of death among a community-recruited prospective cohort of 961 human immunodeficiency virus (HIV)-infected people who inject drugs in Vancouver, Canada, between 1996 and 2014. The results demonstrated significant declines in age-adjusted all-cause and HIV-related mortality rates since 2010, coincident with the scale-up of a community-wide "seek-and-treat" campaign. © The Author(s) 2017. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail: journals.permissions@oup.com.

  10. High-p(T) Tomography of d+Au and Au+Au at SPS, RHIC, and LHC.

    Science.gov (United States)

    Vitev, Ivan; Gyulassy, Miklos

    2002-12-16

    The interplay of nuclear effects on the p(T)>2 GeV inclusive hadron spectra in d+Au and Au+Au reactions at sqrt[s(NN)]=17, 200, and 5500 GeV is compared to leading order perturbative QCD calculations for elementary p+p (p+p) collisions. The competition between nuclear shadowing, Cronin effect, and jet energy loss due to medium-induced gluon radiation is predicted to lead to a striking energy dependence of the nuclear suppression/enhancement pattern in A+A reactions. We show that future d+Au data can be used to disentangle the initial and final state effects.

  11. Partnering for Learnware: Critical Success Factors in the Use of Learnware by Human Resources Sector Councils and Industry Associations in Canada = Partenariats pour les technologies d'apprentissage: Facteurs critiques de succes dans l'utilisation des technologies d'apprentissage par les conseils sectoriels des ressources humaines et les associations industrielles au Canada.

    Science.gov (United States)

    Stahmer, Anna; Green, Lyndsay

    The use of learnware by human resources sector councils and industry associations in Canada was examined to identify critical success factors in the use of technology-based training. Eight case studies--four involving sector councils and four involving industry associations that either have national mandates or distribute their products across…

  12. Borophene synthesis on Au(111)

    Science.gov (United States)

    Guisinger, Nathan; Kiraly, Brian; Zhang, Zhuhua; Mannix, Andrew; Hersam, Mark C.; Yakobson, Boris I.

    The recent experimental discovery of borophene, the metallic 2-dimensional allotrope of boron, has sparked tremendous interest in further exploration of this unique material. The initial synthesis of borophene was accomplished on Ag substrates and serves as a quintessential example of predictive modeling to experimental realization. In this talk, we expand the phase-space of borophene synthesis to Au. Borophene synthesis was accomplished by evaporating elemental boron onto a Au(111) substrate. The synthesized borophene retains its metallic character on Au as verified with scanning tunneling spectroscopy. Most fascinating is the difference in growth dynamics on the Au(111) substrate where the reconstructed surface presents a unique energy landscape for borophene nucleation and growth. We find that the initial low-coverage growth of borophene modifies the herringbone reconstruction into a ``trigonal'' network, where the 2D boron islands are uniformly templated across the surface. Increasing coverage results in the increasing size of the templated borophene islands until they coalesce into larger sheets. The observed growth dynamics are supported by the computational modeling of boron nucleation on Au.

  13. PHENIX results on collectivity in high-multiplicity p + Au, d + Au and 3He + Au collisions

    Science.gov (United States)

    Xu, Qiao

    2016-08-01

    We present recent PHENIX results for long-range two-particle correlation functions across a large pseudorapidity(η) gap in high-multiplicity p+Au, d+Au and 3He+Au collisions. Enhanced correlations are observed for particles with small azimuthal separation. Measurements of the second order Fourier coefficients (v 2) in p/d/3He+Au collisions, and the third order Fourier coefficient (v 3) in 3He+Au collision are performed using the event plane method. Scaling of v 2 with the initial eccentricity (ɛ 2) is performed in each system to investigate the role of the initial geometry in the development of a final-state anisotropy in the particle emission. The v 2 coefficients for identified π±, K± and (anti-)proton are measured as a function of transverse kinetic energy (KET) and their magnitudes are found to scale approximately with the number of constituent quarks in the hadron.

  14. Tri Community Watershed Initiative: Towns of Black Diamond, Turner Valley and Okotoks, Alberta, Canada Promoting Sustainable Behaviour in Watersheds and Communities

    Science.gov (United States)

    Maureen Lynch

    2006-01-01

    For the past two years, three rural municipalities in the foothills of the Canadian Rockies have been working together to promote sustainability in their communities. The towns share the belief that water is an integral part of the community; they have formed a Tri Community Watershed Initiative to help manage their shared resource. Activities of the Initiative include...

  15. La sclérose en plaques au Canada, 2011-2031 : résultats d’une étude de modélisation par microsimulation des répercussions épidémiologiques et économiques

    Directory of Open Access Journals (Sweden)

    Nana Amankwah

    2017-01-01

    Full Text Available Introduction : L’objectif de notre étude est de présenter des estimations et des projections des répercussions épidémiologiques et économiques de la sclérose en plaques (SP au Canada sur 20 ans (2011-2031. Méthodologie : Nous avons utilisé un modèle de microsimulation de la santé de la population (POHEM de Statistique Canada, plus précisément le modèle longitudinal de microsimulation démographique appelé POHEM - Maladies neurologiques. Nous avons sélectionné les personnes atteintes de SP à partir de sources de données administratives sur la santé et dérivé les paramètres liés à l’incidence de la maladie et au taux de décès d’une étude de cohorte de la Colombie-Britannique afin de prévoir quels seront l’incidence de la SP et son taux de décès. Nous avons également inclus une mesure reposant sur l’utilité (Health Utilities Index Mark 3 qui rend compte des états de santé fonctionnelle afin de réaliser des projections sur la qualité de vie liée à la santé. Enfin, nous avons estimé les paramètres de prestation de soins et de coûts des soins de santé à partir de sondages nationaux du Canada et de données administratives sur la santé et nous les avons inclus comme paramètres dans le modèle visant à évaluer les répercussions économiques et sur la santé des maladies neurologiques. Résultats : On anticipe une légère augmentation du nombre de cas incidents de SP, passant de 4 051 cas pour 100 000 personnes en 2011 à 4 974 en 2031. Le nombre de Canadiens touchés par la SP passera ainsi de 98 385 en 2001 à 133 635 en 2031. Le coût total des soins de santé par personne (à l’exception des dépenses directes pour les adultes de 20 ans et plus atteints de SP en 2011 était d’environ 16 800 $, contre un peu moins de 2500 $ pour ceux ne souffrant d’aucune affection neurologique. Si on comptabilise les dépenses supplémentaires liées à la SP (à l’exception des dépenses directes

  16. Global Affairs Canada | IDRC - International Development Research ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    As a Government of Canada Crown Corporation, we are an important part of Canada's foreign affairs and development efforts. ... The Canadian International Food Security Research Fund is a CA$125 million initiative that aims to bring market-ready agriculture innovations to more people, improving lives and livelihoods.

  17. Eastern Canada

    Energy Technology Data Exchange (ETDEWEB)

    Bryant, R.G.; Roliff, W.A.; Sealey, R.; Palonen, P.A.

    1981-10-01

    Uncertainty of increased taxation of petroleum revenues proposed under the Canadian national energy program effected a minor slowdown of the rapid exploration in 1980. Total numbers of wells drilled in eastern Canada were: Ontario, 224; Quebec, 3; Nova Scotia, 1; and the Atlantic offshore, 13. Much of the Ontario drilling, 123 wells, was for development purposes. The success ratio on exploratory drilling in Ontario was 34.7, while all Quebec and Nova Scotia wells were dry. Production of oil and gas declined by 16.8% and 18.5% in New Brunswick. Oil production in Ontario increased by 1.2%. The increase in gas production of 14.3% to almost 443,535.5 x 10/sup 3/m/sup 3/ was due almost entirely to development of known fields underlying Lake Erie. The exploration of offshore eastern Canada continued at a stable rate, with 12 wells completed. Of these, 2 were in the Gulf of St. Lawrence, 3 on the Grand Banks, 6 on the Labrador Shelf, and 1 in Davis Strait. All wells were abandoned or suspended at year end, although discoveries of hydrocarbon were made in Davis Strait and the Grand Banks. The early exploration stage, combined with record water depths, prevented any of these wells from being put into production, although testing will be continued on the most promising shows. Seismic exploration increased to approximately 30,000 km in the Atlantic offshore areas. In addition, 1,420.94 km was shot in Lake Erie. Onshore seismic exploration accounted for 1,078.67 km in Ontario, 350 km in Nova Scotia and 242.76 km in Quebec. 3 figures, 8 tables.

  18. Origin of sulfur and crustal recycling of copper in polymetallic (Cu-Au-Co-Bi-U ± Ag) iron-oxide-dominated systems of the Great Bear Magmatic Zone, NWT, Canada

    Science.gov (United States)

    Acosta-Góngora, P.; Gleeson, S. A.; Samson, I. M.; Corriveau, L.; Ootes, L.; Jackson, S. E.; Taylor, B. E.; Girard, I.

    2017-06-01

    The Great Bear Magmatic Zone, in northwest Canada, contains numerous polymetallic mineral occurrences, prospects, and deposits of the iron oxide copper-gold deposit (IOCG) family. The mineralization is hosted by the Treasure Lake Group and igneous rocks of the Great Bear arc and was deposited concomitantly with the arc magmatism (ca. 1.88 to 1.87 Ga). In situ δ 34S (n = 48) and δ 65Cu (n = 79) analyses were carried out on ore-related sulfides from a number of these systems. The δ 34S values mainly vary between 0 and +5‰, consistent with derivation of sulfur from the mantle. Lower δ 34S values (-7.7 to +1.4‰) from the Sue-Dianne breccia may indicate SO2 disproportionation of a magmatic hydrothermal fluid. The δ 65Cu values vary between -1.2 and -0.3‰, and are lower than the igneous δ 65Cu range of values (0.0 ± 0.27‰). The S and Cu isotopic data are decoupled, which suggests that Cu (and possibly some S) was dissolved and remobilized from supracrustal rocks during early stages of alteration (e.g., sodic alteration) and then precipitated by lower temperature, more oxidizing fluids (e.g., Ca-Fe-K alteration). A limited fluid inclusion dataset and δ 13C and δ 18O values are also presented. The δ 18Ofluid values are consistent with a magmatic origin or a host-rock equilibrated meteoric water source, whereas the δ 13Cfluid values support a marine carbonate source. Combined, the S and Cu isotopic data indicate that while the emplacement of the Great Bear magmatic bodies may have driven fluid convection and may be the source of fluids and sulfur, metals such as Cu could have been recycled from crustal sources.

  19. Suppression of ϒ production in d+Au and Au+Au collisions at √(s{sub NN})=200 GeV

    Energy Technology Data Exchange (ETDEWEB)

    Adamczyk, L. [AGH University of Science and Technology, Cracow (Poland); Adkins, J.K. [University of Kentucky, Lexington, KY, 40506-0055 (United States); Agakishiev, G. [Joint Institute for Nuclear Research, Dubna, 141 980 (Russian Federation); Aggarwal, M.M. [Panjab University, Chandigarh 160014 (India); Ahammed, Z. [Variable Energy Cyclotron Centre, Kolkata 700064 (India); Alekseev, I. [Alikhanov Institute for Theoretical and Experimental Physics, Moscow (Russian Federation); Alford, J. [Kent State University, Kent, OH 44242 (United States); Anson, C.D. [Ohio State University, Columbus, OH 43210 (United States); Aparin, A. [Joint Institute for Nuclear Research, Dubna, 141 980 (Russian Federation); Arkhipkin, D.; Aschenauer, E.C. [Brookhaven National Laboratory, Upton, NY 11973 (United States); Averichev, G.S. [Joint Institute for Nuclear Research, Dubna, 141 980 (Russian Federation); Balewski, J. [Massachusetts Institute of Technology, Cambridge, MA 02139-4307 (United States); Banerjee, A. [Variable Energy Cyclotron Centre, Kolkata 700064 (India); Barnovska, Z. [Nuclear Physics Institute AS CR, 250 68 Řež/Prague (Czech Republic); Beavis, D.R. [Brookhaven National Laboratory, Upton, NY 11973 (United States); Bellwied, R. [University of Houston, Houston, TX, 77204 (United States); Bhasin, A. [University of Jammu, Jammu 180001 (India); Bhati, A.K. [Panjab University, Chandigarh 160014 (India); Bhattarai, P. [University of Texas, Austin, TX 78712 (United States); and others

    2014-07-30

    We report measurements of ϒ meson production in p+p, d+Au, and Au+Au collisions using the STAR detector at RHIC. We compare the ϒ yield to the measured cross section in p+p collisions in order to quantify any modifications of the yield in cold nuclear matter using d+Au data and in hot nuclear matter using Au+Au data separated into three centrality classes. Our p+p measurement is based on three times the statistics of our previous result. We obtain a nuclear modification factor for ϒ(1S+2S+3S) in the rapidity range |y|<1 in d+Au collisions of R{sub dAu}=0.79±0.24(stat.)±0.03(syst.)±0.10(p+p syst.). A comparison with models including shadowing and initial state parton energy loss indicates the presence of additional cold-nuclear matter suppression. Similarly, in the top 10% most-central Au+Au collisions, we measure a nuclear modification factor of R{sub AA}=0.49±0.1(stat.)±0.02(syst.)±0.06(p+psyst.), which is a larger suppression factor than that seen in cold nuclear matter. Our results are consistent with complete suppression of excited-state ϒ mesons in Au+Au collisions. The additional suppression in Au+Au is consistent with the level expected in model calculations that include the presence of a hot, deconfined Quark–Gluon Plasma. However, understanding the suppression seen in d+Au is still needed before any definitive statements about the nature of the suppression in Au+Au can be made.

  20. The Inuit (Eskimo) of Canada.

    Science.gov (United States)

    Creery, Ian

    This report examines the history of the colonization of Arctic Canada and the efforts of its 25,000 Inuit residents to decolonize themselves. Initial sections outline the origins and early history of the Inuit; characteristics of Inuit culture, family life, and spirituality; the effects of whaling and the fur trade; and the movement of the Inuit…

  1. AU-EU “Strategic Partnership”

    DEFF Research Database (Denmark)

    Rodt, Annemarie Peen; Okeke, Jide

    2013-01-01

    This article appraises strategic partnership between the African Union (AU) and European Union (EU). It examines the context and nature of AU and EU security relations and explores the conditions under which partnership has a positive impact in this regard. This includes an evaluation of converge......This article appraises strategic partnership between the African Union (AU) and European Union (EU). It examines the context and nature of AU and EU security relations and explores the conditions under which partnership has a positive impact in this regard. This includes an evaluation...... of convergence between the two organizations and its effect or lack thereof on African security. The article concludes that events leading up to and initiatives following the 2007 Joint Africa–European Union Strategy have produced a degree of AU and EU convergence, which has had limited impact on the efficacy...

  2. Aging in Canada: State of the Art and Science

    Science.gov (United States)

    Sheets, Debra J.; Gallagher, Elaine M.

    2013-01-01

    Canada shares many similarities with other industrialized countries around the world, including a rapidly aging population. What sets Canada uniquely apart is the collaborative approach that has been enacted in the health care system and the aging research initiatives. Canada has tremendous pride in its publicly funded health care system that…

  3. Affaires mondiales Canada | CRDI - Centre de recherches pour le ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Par exemple, des équipes de recherche vietnamiennes et canadiennes ont mis au point des farines instantanées et des céréales pour bébés enrichies de micronutriments, et ce, au moyen de cultures et d'installations de transformation locales. Affaires mondiales Canada, le CRDI et les Instituts de recherche en santé du ...

  4. Partenariat en recherche ANASE-Canada | CRDI - Centre de ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le Partenariat en recherche ANASE-Canada contribuera à renforcer les relations entre le Canada et l'Association des nations de l'Asie du Sud-Est (ANASE) grâce à la recherche et au dialogue sur les politiques portant sur des questions d'intérêt commun dans la région. L'organisme bénéficiaire, le Centre for ...

  5. Bringing politics and evidence together: policy entrepreneurship and the conception of the At Home/Chez Soi Housing First Initiative for addressing homelessness and mental illness in Canada.

    Science.gov (United States)

    Macnaughton, Eric; Nelson, Geoffrey; Goering, Paula

    2013-04-01

    An interesting question concerns how large-scale (mental) health services policy initiatives come into being, and the role of evidence within the decision-making process behind their origins. This paper illustrates the process by which motivation to address homelessness, in the context of the upcoming 2010 Vancouver Olympics, was leveraged into a pan-Canadian project including sites in Vancouver, Winnipeg, Toronto, Montreal and Moncton, New Brunswick. The aim of the initiative was to implement and evaluate an intervention, Housing First, to provide housing and support to previously homeless people with mental illness. This qualitative case study was conducted between December 2009 and December 2010, employing grounded theory, and drawing on archival documents and interviews with 19 key informants involved in the conception of the project. Overall, the findings affirm that policy-making does not follow a rational, linear process of knowledge translation/exchange (KTE) and implementation, whereby evidence-based "products" are brought forward to address objectively determined needs and then "placed into decision-making events" (Lomas, 2007, p. 130). Instead, evidence-based policy making should be understood within the much more complex context of "policy entrepreneurship" (Kingdon, 2003; Mintrom & Norman, 2009) which entails taking advantage of windows of opportunity, and helping to bring together the "streams" of problems, politics, and policy ideas (Kingdon, 2003). Copyright © 2013 Elsevier Ltd. All rights reserved.

  6. Factors Influencing the Intention of Perinatal Nurses to Adopt the Baby-Friendly Hospital Initiative in Southeastern Quebec, Canada: Implications for Practice

    Directory of Open Access Journals (Sweden)

    Guylaine Chabot

    2014-01-01

    Full Text Available Nurses play a major role in promoting the baby-friendly hospital initiative (BFHI, yet the adoption of this initiative by nurses remains a challenge in many countries, despite evidences of its positive impacts on breastfeeding outcomes. The aim of this study was to identify the factors influencing perinatal nurses to adopt the BFHI in their practice. Methods. A sample of 159 perinatal nurses from six hospital-based maternity centers completed a survey based on the theory of planned behavior. Hierarchical multiple linear regression analyses were performed to assess the relationship between key independent variables and nurses’ intention to adopt the BFHI in their practice. A discriminant analysis of nurses’ beliefs helped identify the targets of actions to foster the adoption the BFHI among nurses. Results. The participants are mainly influenced by factors pertaining to their perceived capacity to overcome the strict criteria of the BFHI, the mothers’ approval of a nursing practice based on the BFHI, and the antenatal preparation of the mothers. Conclusions. This study provides theory-based evidence for the development of effective interventions aimed at promoting the adoption of the BFHI in nurses’ practice.

  7. Les bienfaits pour la santé et la prédominance du sucre dans les céréales pour déjeuner destinées aux enfants au Canada

    Directory of Open Access Journals (Sweden)

    Monique Potvin Kent

    2017-01-01

    ans sur l’emballage, en vue de réduire l'attrait envers ce groupe d’âge. Il faut également modifier la composition des céréales pour déjeuner visant les enfants au moyen de cibles établies par le gouvernement ou par la réglementation si on juge sa conformité inacceptable.

  8. Voluntary Participation in Community Economic Development in Canada: An Empirical Analysis

    Directory of Open Access Journals (Sweden)

    Laura Lamb

    2011-01-01

    Full Text Available This article is an empirical analysis of an individual's decision to participate in community economic development (CED initiatives in Canada. The objective of the analysis is to better understand how individuals make decisions to volunteer time toward CED initiatives and to determine whether the determinants of participation in CED are unique when compared to those of participation in volunteer activities in general. The dataset employed is Statistics Canada's 2004 Canada Survey of Giving, Volunteering and Participating (CSGVP. To date, there has been no prior econometric analysis of the decision to participate in community economic development initiatives in Canada. Results suggest a role for both public policymakers and practitioners in influencing participation in CED. / Cet article constitue une analyse empirique du processus de prise de décision chez les individus en ce qui a trait à la participation aux initiatives canadiennes de développement économique communautaire (DÉC. Le but de l'analyse est de mieux comprendre la façon dont les individus prennent la décision de consacrer du temps au bénévolat dans les initiatives de DÉC. Elle sert aussi à trancher la question de savoir si les facteurs de participation aux initiatives de développement économique communautaire sont uniques ou communs à la participation à des activités bénévoles en général. Les données employées dans le cadre de cette analyse sont puisées de l'Enquête canadienne sur le don, le bénévolat et la participation effectuée par Statistique Canada en 2004. À ce jour, aucune analyse économétrique n'a été menée sur la décision de participer aux initiatives canadiennes de DÉC. Les résultats suggèrent que les responsables de l'élaboration des politiques ainsi que les praticiens influencent tous deux la participation aux initiatives de DÉC.

  9. Integrated HIV care and service engagement among people living with HIV who use drugs in a setting with a community-wide treatment as prevention initiative: a qualitative study in Vancouver, Canada.

    Science.gov (United States)

    Collins, Alexandra B; Parashar, Surita; Hogg, Robert S; Fernando, Saranee; Worthington, Catherine; McDougall, Patrick; Turje, Rosalind Baltzer; McNeil, Ryan

    2017-03-03

    Social-structural inequities impede access to, and retention in, HIV care among structurally vulnerable people living with HIV (PLHIV) who use drugs. The resulting disparities in HIV-related outcomes among PLHIV who use drugs pose barriers to the optimization of HIV treatment as prevention (TasP) initiatives. We undertook this study to examine engagement with, and impacts of, an integrated HIV care services model tailored to the needs of PLHIV who use drugs in Vancouver, Canada - a setting with a community-wide TasP initiative. We conducted qualitative interviews with 30 PLHIV who use drugs recruited from the Dr. Peter Centre, an HIV care facility operating under an integrated services model and harm reduction approach. We employed novel analytical techniques to analyse participants' service trajectories within this facility to understand how this HIV service environment influences access to, and retention in, HIV care among structurally vulnerable PLHIV who use drugs. Our findings demonstrate that participants' structural vulnerability shaped their engagement with the HIV care facility that provided access to resources that facilitated retention in HIV care and antiretroviral treatment adherence. Additionally, the integrated service environment helped reduce burdens associated with living in extreme poverty by meeting participants' subsistence (e.g. food, shelter) needs. Moreover, access to multiple supports created a structured environment in which participants could develop routine service use patterns and have prolonged engagement with supportive care services. Our findings demonstrate that low-barrier service models can mitigate social and structural barriers to HIV care and complement TasP initiatives for PLHIV who use drugs. These findings highlight the critical role of integrated service models in promoting access to health and support services for structurally vulnerable PLHIV. Complementing structural interventions with integrated service models that are

  10. Message du président Nelson Mandela au CRDI à l'occasion du 25 ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    29 oct. 2010 ... Nous désirons exprimer toute notre gratitude au CRDI , ainsi qu'au gouvernement et à la population du Canada, pour l'aide qu'ils ont offerte, et qu'ils continuent d'offrir, à l'Afrique du Sud et aux autres pays en développement. Je me réjouis à l'idée de venir au Canada, et de peut-être visiter les bureaux du ...

  11. The influence of the Children's Food and Beverage Advertising Initiative: change in children's exposure to food advertising on television in Canada between 2006-2009.

    Science.gov (United States)

    Potvin Kent, M; Wanless, A

    2014-04-01

    To assess whether children's exposure to television food/beverage advertising has changed since the implementation of the self-regulatory Canadian Children's Food and Beverage Advertising Initiative (CAI). Data on 11 advertised food/beverage categories (candy, chocolate bars, cookies, portable snacks, cheese, yogurt, cereal, juices, soft drinks, diet soft drinks and fast food) were purchased from Nielsen Media Research for May 2006, 2009 and 2011 for the broadcasting markets of Toronto and Vancouver. The number of advertisements aired on 27 television stations between 0600 hours-1200 hours was determined in Toronto and Vancouver for May 2006, 2009 and 2011 and the percentage change in the number of spots between May 2006 and May 2011 on all stations, on children's specialty stations and on generalist stations was then calculated. The average number food/beverage spots seen by children aged 2-11 was determined for May 2006 and 2009 and the percentage change was calculated. On children's specialty channels, a 4.5% decrease in total spots aired was observed while spots aired on generalist stations increased by 44% (Toronto) and 45% (Vancouver). On all stations, children's total average exposure to food/beverage advertising increased by 16.8% in Toronto and 6.4% in Vancouver between 2006 and 2009. Significant increases were seen in snacks and yogurt in both cities, and in fast food in Toronto. On children's specialty channels, children's exposure to the food/beverage categories considered increased by 5.4% in Toronto and by 2.5% in Vancouver. Despite improvements in the volume of spots on children's specialty channels, children's exposure to food and beverage advertising has increased since the implementation of the CAI. The current self-regulatory system is failing to protect children from food marketing high in fat, sugar and sodium on television. Government regulation needs to be considered.

  12. STEM Education in Canada: A Knowledge Synthesis

    Science.gov (United States)

    DeCoito, Isha

    2016-01-01

    Across Canada many initiatives have been initiated to generate more interest in science, technology, engineering, and mathematics (STEM) education; however, no single or comprehensive overview has been conducted that takes into account the impact of these STEM initiatives on teaching/learning outcomes in K-12 education. This knowledge synthesis of…

  13. Radiation Protection in Canada

    Science.gov (United States)

    Bird, P. M.

    1964-01-01

    The current status of radiation protection in Canada is discussed in the last of a three-part series. Particular emphasis has been placed on the role of the Radiation Protection Division of the Department of National Health and Welfare. A radioactive fallout study program has been established involving the systematic collection of air and precipitation samples from 24 locations, soil samples from 23 locations, fresh-milk samples from 16 locations, wheat samples from nine areas and human-bone specimens from various hospitals throughout Canada. A whole-body-counting facility and a special study of fallout in Northern areas have also been initiated. For any age group, the highest average strontium-90 concentration in human bone so far reported has been less than four picocuries per gram of calcium compared with the maximum permissible level of 67 derived from the International Committee on Radiation Protection (ICRP) recommendations. By the end of 1963 a general downward trend of levels of radioactivity detected in other parts of the program has been observed. Programs to assess the contribution to the radiation exposure of members of the population from medical x-rays, nuclear reactor operations and natural background-radiation sources have also been described. The annual genetically significant dose from diagnostic x-ray examinations in Canadian public hospitals has been estimated to be 25.8 mrem. Results from the reactor-environment monitoring programs have not suggested the presence of radioactivity beyond that contributed from fallout. PMID:14143681

  14. Canada : tous les projets | Page 4 | CRDI - Centre de recherches ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Ce projet vise à atténuer l'insécurité alimentaire et la malnutrition en Colombie. Sujet: AGRICULTURE, MALNUTRITION. Région: Colombia, Canada. Programme: Agriculture and Food Security. Financement total : CA$ 1,497,700.00. ​Passage à grande échelle de la production d'aliments enrichis et thérapeutiques au ...

  15. Study Canada: An Overview.

    Science.gov (United States)

    Monahan, Robert L.; And Others

    The document presents the first of five units on Canada developed for classroom use in American secondary schools. This unit, an overview of Canada, offers a sequence of information sheets for students and class activity suggestions for teachers which use a comparative approach stressing an understanding of Canada from the viewpoints of both…

  16. Initiation au Lambda-Calcul (An Initiation into Lambda Calculus)

    Science.gov (United States)

    1989-07-15

    un style do preuve par r~curronce, qui est ’analogue do la r6currence structurelle traditionnelle des structuros libros , mais tenant compte du fait quo...pas libro dans M. La th6orie do la OT-r6duction nWest pas aussi 6l6ganto quo cello do la 0-r6duction souls, A causo do I’ambiguil:6 dos expressions do...donne 16 typo des variables libros . Pour los variables lies, 11 est usuet do dclarer tour typo done un champ suppl6mentaire do lop6ratour

  17. Portrait de la compression et de l'expansion de la morbidité au Canada : évolution de l'espérance de vie et de l'espérance de vie ajustée en fonction de la santé, 1994-2010

    Directory of Open Access Journals (Sweden)

    Colin Steensma

    2017-01-01

    Full Text Available Introduction : Notre étude visait à examiner s'il y a eu une expansion ou une compression de la morbidité au Canada, à l'échelle tant nationale que provinciale, en suivant l'évolution de l'espérance de vie (EV et de l'espérance de vie ajustée en fonction de la santé (EVAS entre 1994 et 2010. Une « compression », qui correspond à une diminution de la proportion de la vie marquée par des problèmes de santé, survient lorsque l'EVAS augmente plus rapidement que l'EV. Inversement, une « expansion », qui désigne une augmentation de la proportion de la vie marquée par des problèmes de santé, survient lorsque l'EVAS est stable ou augmente plus lentement que l'EV. Méthodologie : Nous avons estimé l'EV à l'aide des données de Statistique Canada sur la mortalité et sur la population. Nous avons utilisé les données sur la qualité de vie liée à la santé (c.-à-d. morbidité de l'Enquête nationale sur la santé de la population (1994-1999 et de l'Enquête sur la santé dans les collectivités canadiennes (2000-2010 pour calculer l'EVAS. Nous avons établi des tables de mortalité abrégées pour sept intervalles de temps correspondant aux cycles d'enquête disponibles durant la période de 1994 à 2010, ainsi que pour les deux sexes et les dix provinces canadiennes. Les tendances nationales et provinciales ont été examinées à la naissance, à 20 ans et à 65 ans. Résultats : Dans l'ensemble, nous avons constaté une hausse annuelle moyenne statistiquement significative de l'EVAS chez les deux sexes aux trois âges évalués, sauf chez les nouveau-nés de sexe féminin. L'EVAS à la naissance a augmenté en moyenne par année, entre 1994 et 2010, de 0,2 % (p = 0,08 chez les sujets de sexe féminin et de 0,3% (p < 0,001 chez ceux de sexe masculin. À l'échelle nationale, les trois groupes d'âge ont présenté une augmentation annuelle moyenne non statistiquement significative de la proportion de la vie marquée par des

  18. Global Entrepreneurship Monitor - étude au Canada | IDRC ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    entrepreneuriat à l'échelle mondiale permet aux chercheurs d'analyser les tendances en matière de politiques et de pratiques ainsi que de tirer des leçons permettant d'améliorer l'entrepreneuriat. Cette étude sur trois ans générera des ...

  19. Global Entrepreneurship Monitor - étude au Canada | CRDI - Centre ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    entrepreneuriat à l'échelle mondiale permet aux chercheurs d'analyser les tendances en matière de politiques et de pratiques ainsi que de tirer des leçons permettant d'améliorer l'entrepreneuriat. Cette étude sur trois ans générera des ...

  20. La participation des personnes utilisatrices aux exercices de planification et d'organisation des services de sante mentale au Quebec

    National Research Council Canada - National Science Library

    Michèle Clément; Lourdes Rodriguez del Barrio; Jean Gagné; Annie Lévesque

    2013-01-01

      Cet article documente la manière dont s'est renouvelé et s'est transformé au fil du temps le projet de faire participer les usagers aux exercices de planification et d'organisation des services de santé mentale au Québec (Canada...

  1. Home leaving trajectories in Canada: exploring cultural and gendered dimensions

    Directory of Open Access Journals (Sweden)

    Mitchell, Barbara A.

    2003-01-01

    Full Text Available EnglishIn this exploratory study, we profile variations in home leaving, homereturning,and home staying behaviour among four ethnocultural groups in Canada -British, Chinese, Indian, and South European. Data collected in a 1999-2000survey of 1,907 young adults (ages 19-35 residing in the Vancouver area areused. Our principal foci are ethnocultural and gendered aspects of home leavingtrajectories, specifically: ages at home leaving and returning, and reasons forhome leaving, home returning and home staying. Special attention is paid toreturners/boomerangers, given an increasing overall trend in home returning inCanada. We find that: (a both ethnocultural origin and gender are importantdeterminants of home leaving trajectory, (b there is a distinct (but far from tidydifference between European-origin and Asian-origin groups in home leavingtrajectory, (c British-Canadians leave home at the youngest ages and Indo-Canadians at the oldest ages, (d the main reason for home leaving isindependence for British-Canadians; schooling for Chinese-Canadians, andmarriage for Indo-Canadians, (e among all four groups, home returners leavehome initially at younger ages and, with the exception of Indo-Canadian youngmen, who typically leave home for school, and (f gender differences in homeleaving trajectory are larger among the Chinese and Indo-Canadians than amongpersons of European origins. Overall, we conclude that the theorized trend of theindividualized family life course holds for only some ethnocultural groups inCanada. We conclude with suggestions for future research directions on thetopic of ethnicity and the home leaving life course transitions.FrenchDans cette étude préliminaire, nous donnons le profil de plusieurscomportements relatifs au fait de quitter la maison, d’y retourner et d’y rester dequatre groupes ethnoculturels au Canada, notamment les Britanniques, lesChinois, les Indiens et les ressortissants du sud de l’Europe. On s’est servi

  2. AU BURKINA FASO

    African Journals Online (AJOL)

    Les moyennes sur la même ligne et possédant le même indice ne diffèrent pas significativement au seuil de 5 %. ME : mélange fourrager. 10-20-30 % : pourcentage de concentré. GMQ : Gain Moyen Quotidien. L'analyse des résultats des rations. 1 et 2 montre que l'accès au pâturage permet des performances supérieures.

  3. Results from the PHOBOS Experiment on Au+Au Collisions at RHIC

    CERN Document Server

    Wozniak, K; Baker, M D; Barton, D S; Basilev, S N; Baum, R; Betts, R R; Bialas, A; Bindel, R; Bogucki, W; Budzanowski, A; Busza, W; Carroll, A; Ceglia, M; Chang, Y H; Chen, A E; Coghen, T; Conner, C L; Czyz, W; Dabrowski, B; Decowski, M P; Despet, M; Fita, P; Fitch, J; Friedl, M; Galuszka, K; Ganz, R E; García-Solis, E; George, N; Godlewski, J; Gomes, C; Griesmayer, E; Gulbrandsen, K H; Gushue, S; Halik, J; Halliwell, C; Haridas, P; Hayes, A; Heintzelman, G A; Henderson, C; Hollis, R; Holynski, R; Holzman, B; Johnson, E; Kane, J; Katzy, J M; Kita, W; Kotula, J; Kraner, H W; Kucewicz, W; Kulinich, P A; Law, C; Lemler, M A; Ligocki, T J; Lin, W T; Manly, S L; McLeod, D; Michalowski, J; Mignerey, A C; Mülmenstädt, J; Neal, M; Nouicer, R; Olszewski, A; Pak, R; Park, I C; Patel, M; Pernegger, H; Plesko, M; Reed, C; Remsberg, L P; Reuter, M; Roland, C; Roland, G; Ross, D; Rosenberg, L J; Ryan, J; Sanzgiri, A; Sarin, P; Sawicki, P; Scaduto, J; Shea, J; Sinacore, J; Skulski, W; Steadman, S G; Stephans, G S F; Steinberg, P; Straczek, A; Stodulski, M; Strek, M; Stopa, Z; Sukhanov, A; Surowiecka, K; Tang, J L; Teng, R; Trzupek, A; Vale, C J; van Nieuwenhuizen, G J; Verdier, R; Wadsworth, B; Wolfs, F L H; Wosiek, B; Wozniak, K; Wuosmaa, A H; Wyslouch, B; Zalewski, Kasper

    2001-01-01

    PHOBOS is one of four experiments studying the Au-Au interactions at RHIC. The data collected during the first few weeks after the RHIC start-up, using the initial configuration of the PHOBOS detector, were sufficient to obtain the first physics results for the most central collisions of Au nuclei at the center of mass energy of 56 and 130 AGeV. The pseudorapidity density of charged particles near midrapidity is shown and compared with data at lower energies and from $pp$ and $p\\bar{p}$ collisions. The progress of the analysis of the data is also presented.PHOBOS is one of four experiments studying the Au-Au interactions at RHIC. The data collected during the first few weeks after the RHIC start-up, using the initial configuration of the PHOBOS detector, were sufficient to obtain the first physics results for the most central collisions of Au nuclei at the center of mass energy of 56 and 130 AGeV. The pseudorapidity density of charged particles near midrapidity is shown and compared with data at lower energie...

  4. Comparison of the space-time extent of the emission source in $d$$+$Au and Au$+$Au collisions at $\\sqrt{s_{{NN}}}=200$ GeV

    CERN Document Server

    Adare, A; Aidala, C; Ajitanand, N N; Akiba, Y; Akimoto, R; Al-Bataineh, H; Alexander, J; Alfred, M; Angerami, A; Aoki, K; Apadula, N; Aramaki, Y; Asano, H; Atomssa, E T; Averbeck, R; Awes, T C; Azmoun, B; Babintsev, V; Bai, M; Baksay, G; Baksay, L; Bandara, N S; Bannier, B; Barish, K N; Bassalleck, B; Basye, A T; Bathe, S; Baublis, V; Baumann, C; Bazilevsky, A; Beaumier, M; Beckman, S; Belikov, S; Belmont, R; Bennett, R; Berdnikov, A; Berdnikov, Y; Bhom, J H; Bickley, A A; Black, D; Blau, D S; Bok, J; Bok, J S; Boyle, K; Brooks, M L; Bryslawskyj, J; Buesching, H; Bumazhnov, V; Bunce, G; Butsyk, S; Camacho, C M; Campbell, S; Caringi, A; Chen, C -H; Chi, C Y; Chiu, M; Choi, I J; Choi, J B; Choudhury, R K; Christiansen, P; Chujo, T; Chung, P; Chvala, O; Cianciolo, V; Citron, Z; Cole, B A; del Valle, Z Conesa; Connors, M; Constantin, P; Csanád, M; Csörgő, T; Dahms, T; Dairaku, S; Danchev, I; Das, K; Datta, A; Daugherity, M S; David, G; Dayananda, M K; DeBlasio, K; Dehmelt, K; Denisov, A; Deshpande, A; Desmond, E J; Dharmawardane, K V; Dietzsch, O; Ding, L; Dion, A; Do, J H; Donadelli, M; Drapier, O; Drees, A; Drees, K A; Durham, J M; Durum, A; Dutta, D; D'Orazio, L; Edwards, S; Efremenko, Y V; Ellinghaus, F; Engelmore, T; Enokizono, A; En'yo, H; Esumi, S; Fadem, B; Feege, N; Fields, D E; Finger, M; Jr., \\,; Fleuret, F; Fokin, S L; Fraenkel, Z; Frantz, J E; Franz, A; Frawley, A D; Fujiwara, K; Fukao, Y; Fusayasu, T; Gal, C; Gallus, P; Garg, P; Garishvili, I; Ge, H; Giordano, F; Glenn, A; Gong, H; Gonin, M; Goto, Y; de Cassagnac, R Granier; Grau, N; Greene, S V; Grim, G; Perdekamp, M Grosse; Gu, Y; Gunji, T; Guragain, H; Gustafsson, H -Å; Hachiya, T; Haggerty, J S; Hahn, K I; Hamagaki, H; Hamblen, J; Han, R; Han, S Y; Hanks, J; Hartouni, E P; Hasegawa, S; Haslum, E; Hayano, R; He, X; Heffner, M; Hemmick, T K; Hester, T; Hill, J C; Hohlmann, M; Hollis, R S; Holzmann, W; Homma, K; Hong, B; Horaguchi, T; Hornback, D; Hoshino, T; Huang, J; Huang, S; Ichihara, T; Ichimiya, R; Ide, J; Ikeda, Y; Imai, K; Imazu, Y; Inaba, M; Iordanova, A; Isenhower, D; Ishihara, M; Isobe, T; Issah, M; Isupov, A; Ivanischev, D; Ivanishchev, D; Iwanaga, Y; Jacak, B V; Jeon, S J; Jezghani, M; Jia, J; Jiang, X; Jin, J; Johnson, B M; Jones, T; Joo, E; Joo, K S; Jouan, D; Jumper, D S; Kajihara, F; Kametani, S; Kamihara, N; Kamin, J; Kang, J H; Kang, J S; Kapustinsky, J; Karatsu, K; Kasai, M; Kawall, D; Kawashima, M; Kazantsev, A V; Kempel, T; Key, J A; Khachatryan, V; Khanzadeev, A; Kihara, K; Kijima, K M; Kikuchi, J; Kim, A; Kim, B I; Kim, C; Kim, D H; Kim, D J; Kim, E; Kim, E -J; Kim, H -J; Kim, M; Kim, S H; Kim, Y -J; Kim, Y K; Kinney, E; Kiriluk, K; Kiss, Á; Kistenev, E; Klatsky, J; Kleinjan, D; Kline, P; Koblesky, T; Kochenda, L; Kofarago, M; Komkov, B; Konno, M; Koster, J; Kotchetkov, D; Kotov, D; Kozlov, A; Král, A; Kravitz, A; Kunde, G J; Kurita, K; Kurosawa, M; Kwon, Y; Kyle, G S; Lacey, R; Lai, Y S; Lajoie, J G; Lebedev, A; Lee, D M; Lee, J; Lee, K; Lee, K B; Lee, K S; Lee, S H; Leitch, M J; Leite, M A L; Leitgab, M; Leitner, E; Lenzi, B; Li, X; Lichtenwalner, P; Liebing, P; Lim, S H; Levy, L A Linden; Liška, T; Litvinenko, A; Liu, H; Liu, M X; Love, B; Luechtenborg, R; Lynch, D; Maguire, C F; Makdisi, Y I; Makek, M; Malakhov, A; Malik, M D; Manion, A; Manko, V I; Mannel, E; Mao, Y; Masui, H; Matathias, F; McCumber, M; McGaughey, P L; McGlinchey, D; McKinney, C; Means, N; Meles, A; Mendoza, M; Meredith, B; Miake, Y; Mibe, T; Mignerey, A C; Mikeš, P; Miki, K; Miller, A J; Milov, A; Mishra, D K; Mishra, M; Mitchell, J T; Miyasaka, S; Mizuno, S; Mohanty, A K; Montuenga, P; Moon, H J; Moon, T; Morino, Y; Morreale, A; Morrison, D P; Moukhanova, T V; Murakami, T; Murata, J; Mwai, A; Nagamiya, S; Nagle, J L; Naglis, M; Nagy, M I; Nakagawa, I; Nakagomi, H; Nakamiya, Y; Nakamura, K R; Nakamura, T; Nakano, K; Nam, S; Nattrass, C; Netrakanti, P K; Newby, J; Nguyen, M; Nihashi, M; Niida, T; Nouicer, R; Novitzky, N; Nyanin, A S; Oakley, C; O'Brien, E; Oda, S X; Ogilvie, C A; Oka, M; Okada, K; Onuki, Y; Koop, J D Orjuela; Oskarsson, A; Ouchida, M; Ozaki, H; Ozawa, K; Pak, R; Pantuev, V; Papavassiliou, V; Park, I H; Park, J; Park, S; Park, S K; Park, W J; Pate, S F; Patel, L; Patel, M; Pei, H; Peng, J -C; Pereira, H; Perepelitsa, D V; Perera, G D N; Peresedov, V; Peressounko, D Yu; Perry, J; Petti, R; Pinkenburg, C; Pinson, R; Pisani, R P; Proissl, M; Purschke, M L; Purwar, A K; Qu, H; Rak, J; Rakotozafindrabe, A; Ravinovich, I; Read, K F; Rembeczki, S; Reygers, K; Reynolds, D; Riabov, V; Riabov, Y; Richardson, E; Riveli, N; Roach, D; Roche, G; Rolnick, S D; Rosati, M; Rosen, C A; Rosendahl, S S E; Rosnet, P; Rowan, Z; Rubin, J G; Rukoyatkin, P; Ružička, P; Sahlmueller, B; Saito, N; Sakaguchi, T; Sakashita, K; Sako, H; Samsonov, V; Sano, S; Sarsour, M; Sato, S; Sato, T; Sawada, S; Schaefer, B; Schmoll, B K; Sedgwick, K; Seele, J; Seidl, R; Semenov, A Yu; Sen, A; Seto, R; Sett, P; Sexton, A; Sharma, D; Shein, I; Shibata, T -A; Shigaki, K; Shimomura, M; Shoji, K; Shukla, P; Sickles, A; Silva, C L; Silvermyr, D; Silvestre, C; Sim, K S; Singh, B K; Singh, C P; Singh, V; Slunečka, M; Soltz, R A; Sondheim, W E; Sorensen, S P; Sourikova, I V; Sparks, N A; Stankus, P W; Stenlund, E; Stepanov, M; Stoll, S P; Sugitate, T; Sukhanov, A; Sumita, T; Sun, J; Sziklai, J; Takagui, E M; Takahara, A; Taketani, A; Tanabe, R; Tanaka, Y; Taneja, S; Tanida, K; Tannenbaum, M J; Tarafdar, S; Taranenko, A; Tarján, P; Themann, H; Thomas, D; Thomas, T L; Timilsina, A; Todoroki, T; Togawa, M; Toia, A; Tomášek, L; Tomášek, M; Torii, H; Towell, M; Towell, R; Towell, R S; Tserruya, I; Tsuchimoto, Y; Vale, C; Valle, H; van Hecke, H W; Vargyas, M; Vazquez-Zambrano, E; Veicht, A; Velkovska, J; Vértesi, R; Vinogradov, A A; Virius, M; Vrba, V; Vznuzdaev, E; Wang, X R; Watanabe, D; Watanabe, K; Watanabe, Y; Watanabe, Y S; Wei, F; Wei, R; Wessels, J; Whitaker, S; White, S N; Winter, D; Wolin, S; Wood, J P; Woody, C L; Wright, R M; Wysocki, M; Xia, B; Xie, W; Xue, L; Yalcin, S; Yamaguchi, Y L; Yamaura, K; Yang, R; Yanovich, A; Ying, J; Yokkaichi, S; Yoon, I; You, Z; Young, G R; Younus, I; Yushmanov, I E; Zajc, W A; Zelenski, A; Zhang, C; Zhou, S; Zolin, L

    2014-01-01

    Two-pion interferometry measurements in $d$$+$Au and Au$+$Au collisions at $\\sqrt{s_{{NN}}}=200$ GeV are used to extract and compare the Gaussian source radii R$_{{\\rm out}}$, R$_{{\\rm side}}$, and R$_{{\\rm long}}$, which characterize the space-time extent of the emission sources. The comparisons, which are performed as a function of collision centrality and the mean transverse momentum for pion pairs, indicate strikingly similar patterns for the $d$$+$Au and Au$+$Au systems. They also indicate a linear dependence of R$_{{\\rm side}}$ on the initial transverse geometric size $\\bar{R}$, as well as a smaller freeze-out size for the $d$$+$Au system. These patterns point to the important role of final-state rescattering effects in the reaction dynamics of $d$$+$Au collisions.

  5. Bonheur et progrès : mesurer le bien-être au Bhoutan et au Canada ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    31 janv. 2011 ... Le bonheur vient du dedans, et non du dehors ; il ne dépend donc pas de ce que nous avons mais de ce que nous sommes. » Voilà ce que déclamait l'homme de lettres américain Henry Van Dyke. Il se faisait une idée noble d'un monde moins matérialiste, diront certains, mais est-ce quantifiable ?

  6. Pratiques de publicité au point de vente dans l'industrie du tabac ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    On entend ici, par " publicité au point de vente ", la présence d'articles promotionnels là où se vendent les produits du tabac. Des études menées dans des pays comme le Canada démontrent que la publicité au point de vente exerce une influence importante sur les écoliers et peut les prédisposer à devenir fumeurs.

  7. Hybridization of Phenylthiolate- and Methylthiolate-Adatom Species at Low Coverage on the Au(111) Surface

    Science.gov (United States)

    2013-03-07

    thiolate species, methylthiolate and phenylthiolate, on the Au(111) surface. Despite the apparent stability, organometallic complexes of methyl- and...stability, organometallic complexes of methyl- and phenylthiolate with the goldadatom (RS?Au?SR, with R as the hydrocarbon group) undergo a stoichiometric...Electrical and Computer Engineering, University of Toronto, Toronto, ON, M5S 3G4, Canada ∥Department of Chemistry , University of Virginia, Charlottesville

  8. Canada-Africa Prevention Trials Network : Building African Capacity ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Canada-Africa Prevention Trials Network : Building African Capacity for HIV/AIDS Prevention Trials. The Canada-Africa Prevention Trials Network (CAPT Network) was formed through a capacity building grant from the Global Health Research Initiative (GHRI). The Network comprises eight African centres (four in Uganda, ...

  9. Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR

    Energy Technology Data Exchange (ETDEWEB)

    STAR Coll

    2009-04-11

    -transition temperature, suggesting that chemical freeze-out happens in the vicinity of hadronization and the chemical freezeout temperature is universal despite the vastly different initial conditions in the collision systems. The extracted kinetic freeze-out temperature, while similar to the chemical freeze-out temperature in pp, d + Au, and peripheral Au + Au collisions, drops significantly with centrality in Au + Au collisions, whereas the extracted transverse radial flow velocity increases rapidly with centrality. There appears to be a prolonged period of particle elastic scatterings from chemical to kinetic freeze-out in central Au + Au collisions. The bulk properties extracted at chemical and kinetic freeze-out are observed to evolve smoothly over the measured energy range, collision systems, and collision centralities.

  10. Restorative justice innovations in Canada.

    Science.gov (United States)

    Wilson, Robin J; Huculak, Bria; McWhinnie, Andrew

    2002-01-01

    As many jurisdictions move towards more retributive measures as a means to address public discontent with crime, a parallel movement has developed in regard to restorative justice. This article presents three restorative initiatives currently in use in Canada. Each initiative addresses offender behavior and community engagement at a different point in the justice continuum. The use of Sentencing Circles is an example of how restorative justice principles can be instituted at the front end, prior to an offender becoming lodged in the system. The Restorative Justice Options to Parole Suspension project demonstrates how community engagement can assist in preventing offenders from being returned to the system once they have achieved conditional release. The Circles of Support and Accountability project has enlisted the support of professionally supported volunteers in the community reintegration of high-risk sexual offenders. These initiatives are presented within a framework of effective correctional interventions and increased empowerment for a variety of stakeholders. Copyright 2002 John Wiley & Sons, Ltd.

  11. Formation et initiation à la tâche : éléments de ritualisation favorisant le développement d’une culture de santé et sécurité au travail auprès des travailleurs immigrants Training and initiation to the task: ritual elements promoting the development of a culture of health and safety at work for immigrant workers Formación e iniciación a la tarea : elementos de ritualización que favorecen el desarrollo de una cultura de salud y seguridad en los trabajadores inmigrantes

    Directory of Open Access Journals (Sweden)

    Sylvie Gravel

    2011-11-01

    Full Text Available Le présent article traite une partie des résultats d’une étude portant sur les stratégies favorables à la prise en charge des mesures de santé et sécurité au travail (SST dans les petites entreprises montréalaises (PE embauchant une main-d’œuvre immigrante. Dans cet article est abordée entre autres l’influence de l’immigration sur la capacité et la motivation des superviseurs et des travailleurs à participer à la gestion des mesures de SST dont celles de la formation et de l’initiation à la tâche.. L’échantillon comprend 28 PE de Montréal ayant entre 10 et 50 travailleurs répartis en deux groupes : a PE d’observation ayant 25 % et plus de travailleurs immigrants (n=19; b PE de comparaison ayant 75 % et plus de travailleurs nés au Canada (n=9. Les résultats indiquent que les compétences des dirigeants et la formation acquise dans leur pays d’origine orientent l’adoption de rituels de prévention dès l’embauche des nouveaux travailleurs. Enfin, malgré l’importance de la présence de travailleurs immigrants dans les PE, seulement deux entreprises de notre échantillon ont adapté leur formation aux nouveaux employés immigrants.This study examines the influence of immigration on motivation and ability of supervisors and workers in small business (SB to participate in health and safety measures (OSH management. The sample consists of 28 Montreal’s SB between 10 and 50 workers divided into two groups: a SB observation with 25 % or more immigrant workers (n=19; b SB compared with 75 % and more Canadian-born workers (n=9. The results indicate that managers’ competencies and training developed in their country of origin condition their approach concerning hiring and training rituals. Despite the importance of immigrant workers’ presence, only two companies in our sample have adapted their training for new immigrant employees.El presente artículo trata una parte de los resultados de un estudio sobre

  12. Le ministre du Commerce international du Canada rencontre des ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    17 juil. 2017 ... La promotion de l'entrepreneuriat, la façon dont le commerce peut profiter aux femmes et à leur famille, et la création d'emplois pour les plus vulnérables étaient au coeur de la discussion en table ronde du ministre du Commerce international du Canada, l'honorable François-Philippe Champagne, et des ...

  13. canada : tous les projets | Page 7 | CRDI - Centre de recherches ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Région: Tanzania, Canada. Programme: Maternal and Child Health. Financement total : CA$ 995,940.00 ... L'Éthiopie présente l'un des taux de prévalence les plus élevés au monde quant à la malnutrition protéinocalorique et aux carences en micronutriments. Date de début : 5 février 2015. Sujet: MALNUTRITION. Région: ...

  14. Au pair trajectories

    DEFF Research Database (Denmark)

    Dalgas, Karina Märcher

    2015-01-01

    Since 2000, thousands of young Filipino migrants have come to Denmark as au pairs. Officially, they are there to “broaden their cultural horizons” by living temporarily with a Danish host family, but they also conduct domestic labor in exchange for food and money, which allows them to send...

  15. Catalytic activity of Au nanoparticles

    DEFF Research Database (Denmark)

    Larsen, Britt Hvolbæk; Janssens, Ton V.W.; Clausen, Bjerne

    2007-01-01

    Au is usually viewed as an inert metal, but surprisingly it has been found that Au nanoparticles less than 3–5 nm in diameter are catalytically active for several chemical reactions. We discuss the origin of this effect, focusing on the way in which the chemical activity of Au may change with par......Au is usually viewed as an inert metal, but surprisingly it has been found that Au nanoparticles less than 3–5 nm in diameter are catalytically active for several chemical reactions. We discuss the origin of this effect, focusing on the way in which the chemical activity of Au may change...... with particle size. We find that the fraction of low-coordinated Au atoms scales approximately with the catalytic activity, suggesting that atoms on the corners and edges of Au nanoparticles are the active sites. This effect is explained using density functional calculations....

  16. Nourrir neuf milliards de personnes d'ici 2050 ? Le Canada peut aider

    International Development Research Centre (IDRC) Digital Library (Canada)

    15 oct. 2014 ... En effet, si environ la moitié des agriculteurs de la planète sont des femmes, la discrimination entrave considérablement leur accès à la terre, à l'eau, aux ... Le Canada a mis au point le canola ainsi que des variétés de blé et de légumineuses (haricots, fèves, lentilles) adaptées au sol des Prairies.

  17. Subventions pour la coopération en recherche entre le Canada et l ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    La phase II du programme Subventions pour la coopération en recherche entre le Canada et l'Afrique (SCR-CA II) appuiera plus de 20 échanges de professeurs de courte durée entre des universités et des instituts de recherche du Canada et de l'Afrique, de 2013 à 2015. Ces échanges porteront sur au moins une des ...

  18. Thiol ligand-induced transformation of Au38(SC2H4Ph)24 to Au36(SPh-t-Bu)24.

    Science.gov (United States)

    Zeng, Chenjie; Liu, Chunyan; Pei, Yong; Jin, Rongchao

    2013-07-23

    We report a disproportionation mechanism identified in the transformation of rod-like biicosahedral Au38(SCH2CH2Ph)24 to tetrahedral Au36(TBBT)24 nanoclusters. Time-dependent mass spectrometry and optical spectroscopy analyses unambiguously map out the detailed size-conversion pathway. The ligand exchange of Au38(SCH2CH2Ph)24 with bulkier 4-tert-butylbenzenethiol (TBBT) until a certain extent starts to trigger structural distortion of the initial biicosahedral Au38(SCH2CH2Ph)24 structure, leading to the release of two Au atoms and eventually the Au36(TBBT)24 nanocluster with a tetrahedral structure, in which process the number of ligands is interestingly preserved. The other product of the disproportionation process, i.e., Au40(TBBT)m+2(SCH2CH2Ph)24-m, was concurrently observed as an intermediate, which was the result of addition of two Au atoms and two TBBT ligands to Au38(TBBT)m(SCH2CH2Ph)24-m. The reaction kinetics on the Au38(SCH2CH2Ph)24 to Au36(TBBT)24 conversion process was also performed, and the activation energies of the structural distortion and disproportionation steps were estimated to be 76 and 94 kJ/mol, respectively. The optical absorption features of Au36(TBBT)24 are interpreted on the basis of density functional theory simulations.

  19. Immigrants' initial firm allocation and earnings growth

    National Research Council Canada - National Science Library

    Wen Ci; Feng Hou

    2017-01-01

    .... Using a Canadian employer–employee matched dataset, this paper considers whether immigrants initially employed in low-paying firms in Canada experienced inferior earnings growth than those initially employed in high-paying firms...

  20. Mise au point

    African Journals Online (AJOL)

    31 mai 2013 ... laryngocèle interne. Une surinfection a été notée chez trois patients réalisant ainsi le tableau de pyolaryngocèle. Tous les patients ont eu un examen clinique complet comportant un examen OrL et cervico-facial ainsi qu'un examen laryngé au ... pas en communication avec la lumière laryngée. La taille.

  1. Le CRDI au Mali

    International Development Research Centre (IDRC) Digital Library (Canada)

    sur la sécurité alimentaire internationale. Le CRDI continue de soutenir des travaux de recherche au Mali, quoique dans une moindre mesure en raison de la .... souvent tenues à l'écart du processus décisionnel. Les chercheurs tentent de déterminer de quelles manières les jeunes femmes du Mali et des pays avoisinants ...

  2. Mise au point

    African Journals Online (AJOL)

    7 mai 2012 ... Le carcinome folliculaire est la deuxième tumeur maligne la plus fréquente de la thyroïde et l'invasion hématologique est le moyen de propagation le plus courant de ses métastases. Les localisations secondaires à ces cancers siègent principalement au niveau des poumons, suivi par les localisations.

  3. Le CRDI au Maroc

    International Development Research Centre (IDRC) Digital Library (Canada)

    visant à aider les secteurs de l'agriculture et du tourisme à s'adapter aux changements climatiques. Dans le cadre de recherches antérieures sur la mise au point .... France. Les manifestations et protestations survenues après 2010 et auxquelles on a donné le nom de Printemps arabe ont été annonciatrices de profondes ...

  4. Mise au point

    African Journals Online (AJOL)

    7 mai 2012 ... EPIdEMIOlOgIE ET ETIOPAThOgENIE. Les angiodysplasies osseuses des maxillaires sont rares. Les premiers cas rapportés sont ceux de Berard qui a décrit en 1842 une localisation au niveau du maxillaire supérieur et de Stanley qui a rapporté en 1849 une loca- lisation mandibulaire. une prédisposition ...

  5. Le CRDI au Kenya

    International Development Research Centre (IDRC) Digital Library (Canada)

    et de l'agriculture. En produisant des connaissances dans ces secteurs essentiels, le programme contribuera à la sécurité alimentaire et améliorera la santé au Kenya. Les noms et les frontières indiqués sur la carte n'impliquent ni reconnaissance ni acceptation officielle de la part du CRDI. C. U. R. T. C. A. R. N. EM. A. R. K.

  6. Programmes de nutrition au sein des centres de sante ...

    African Journals Online (AJOL)

    Au Mali, l'incidence de l'anémie ferriprive au cours de la grossesse est élevée. Pour contribuer à la réduction de cette anémie, un projet visant à renforcer les connaissances des professionnels de la santé en nutrition périnatale et sensibiliser les femmes enceintes pour une bonne supplémentation en fer/folate a été initié ...

  7. Tabac et pauvreté au Niger | IDRC - International Development ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Tabac et pauvreté au Niger. La majorité des pays africains sud du Sahara sont au premier stade de l'épidémie du tabac mais la consommation du tabac augmente rapidement. Consciente de la menace mondiale, l'Organisation mondiale de santé (OMS) a initié la Convention-cadre pour la lutte anti-tabac et la majorité des ...

  8. Structural and phonon transmission study of Ge-Au-Ge eutectically bonded interfaces

    Energy Technology Data Exchange (ETDEWEB)

    Knowlton, W.B. [Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Mineral Engineering]|[Lawrence Berkeley Lab., CA (United States). Materials Sciences Div.

    1995-07-01

    This thesis presents a structural analysis and phonon transparency investigation of the Ge-Au-Ge eutectic bond interface. Interface development was intended to maximize the interfacial ballistic phonon transparency to enhance the detection of the dark matter candidate WIMPs. The process which was developed provides an interface which produces minimal stress, low amounts of impurities, and insures Ge lattice continuity through the interface. For initial Au thicknesses of greater than 1,000 {angstrom} Au per substrate side, eutectic epitaxial growth resulted in a Au dendritic structure with 95% cross sectional and 90% planar Au interfacial area coverages. In sections in which Ge bridged the interface, lattice continuity across the interface was apparent. Epitaxial solidification of the eutectic interface with initial Au thicknesses < 500 A per substrate side produced Au agglomerations thereby reducing the Au planar interfacial area coverage to as little as 30%. The mechanism for Au coalescence was attributed to lateral diffusion of Ge and Au in the liquid phase during solidification. Phonon transmission studies were performed on eutectic interfaces with initial Au thicknesses of 1,000 {angstrom}, 500 {angstrom}, and 300 {angstrom} per substrate side. Phonon imaging of eutectically bonded samples with initial Au thicknesses of 300 {angstrom}/side revealed reproducible interfacial percent phonon transmissions from 60% to 70%. Line scan phonon imaging verified the results. Phonon propagation TOF spectra distinctly showed the predominant phonon propagation mode was ballistic. This was substantiated by phonon focusing effects apparent in the phonon imaging data. The degree of interface transparency to phonons and resulting phonon propagation modes correlate with the structure of the interface following eutectic solidification. Structural studies of samples with initial Au thickness of 1,000 {angstrom}/side appear to correspond with the phonon transmission study.

  9. The unexpected formation of Au δ+ -Si δ- by the resonance neutralization of Ar + during the low energy bombardment of Au nanoparticles on c-Si

    Science.gov (United States)

    Yang, De-Quan; Sacher, Edward

    2009-05-01

    Nanoscale Au layers, with irregular porosities, have been formed by the low energy Ar + bombardment of Au nanoparticles that were sputter-deposited onto native oxide-covered Si surfaces. High-resolution field emission scanning electron microcopy (FE-SEM) and X-ray photoelectron spectroscopy (XPS) have been used to characterize the formation and evolution of the nanoporous layer. Under Ar + bombardment, the Au nanoparticles that were initially deposited were observed to flatten and spread across the native oxide surface, without diffusing, finally coalescing at their edges to form a nanoporous film having irregular pore dimensions. XPS showed that this evolution was accompanied by the loss of Au as a result of sputtering. The formation of such porous films necessitates strong interfacial bonding to avoid the lateral diffusion of the Au nanoparticles, and their ultimate coalescence into larger nanoparticles. We demonstrated that Ar + beam bombardment invariably caused the formation of Au δ+ -Si δ- bonding, rather than the expected Au δ- -Si δ+ bonding, and we explain this to be due to the resonance neutralization of the Ar + beam on impacting the Au layer. We also reveal that the presumed formation of AuSi x is not quantifiable by XPS, due to the superposition of the chemical shift of the Au nanoparticles with that of the quantum size effect, during Au loss on sputtering.

  10. Canada Among Nations 2014. Crisis and Reform: Canada and the ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    28 mai 2014 ... This 28th edition of the Canada Among Nations series examines the 2008 global financial crisis, its impact on Canada, and the country's historic and current role in the international financial system.

  11. Activité antérieur : Des hautes-commissaires du Canada ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    . Une récente rencontre de haut niveau tenue à Jakarta a révélé que le Canada et l'Indonésie s'intéressent tous deux au renforcement de leurs relatio. Voir davantageActivité antérieure – Forger le nouveau partenariat entre ...

  12. Canada Among Nations 2014. Crisis and Reform: Canada and the ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    2014-05-28

    May 28, 2014 ... ​This 28th edition of the Canada Among Nations series examines the 2008 global financial crisis, its impact on Canada, and the country's historic and current role in the international financial system. Published by the Centre for International Governance Innovation, Crisis and Reform: Canada and the ...

  13. Mise au point

    African Journals Online (AJOL)

    31 mai 2013 ... L'attitude théra- peutique dépend du type de la laryngocèle. en effet, le traitement endoscopique au laser CO2 a gagné beaucoup d'intérêt ces dernières années. MATÉRIEL ET MÉTHOdES. Il s'agit d'une étude rétrospective portant sur 9 patients porteurs d'une laryngocèle colligés sur une période de 14.

  14. Le CRDI au Ghana

    International Development Research Centre (IDRC) Digital Library (Canada)

    poussée en mathématiques aux spécialistes de demain afin qu'ils puissent relever les défis pressants qui se posent en matière d'environnement, de santé et d'économie. La bourse de chercheur invité que le CRDI a octroyée en 2001 au regretté. John Atta-Mills, qui a par la suite été prési- dent du Ghana de 2009 à 2012, ...

  15. Au pairs on Facebook

    DEFF Research Database (Denmark)

    Dalgas, Karina Märcher

    2016-01-01

    Ethnographers are increasingly making use of Facebook to acquire access and general acquaintance with their field of study. However, little has been written on how Facebook is used methodologically in research that does not have social media sites as the main focus of interest. This article argues...... that engagement with Facebook as a methodological tool can be useful in research among migrants in highly politicised fields. Pointing to a discursive construction of Filipina au pairs as victims of labour exploitation, the article shows how fieldwork on Facebook enables the exploration of the ways in which...... and on Facebook....

  16. Mise au point

    African Journals Online (AJOL)

    7 mai 2012 ... acquis et des anomalies génétiques associées ont été aussi incriminés (mutation du gène Fas ou de la p53, délétion au niveau du chromosome 6q, méthylation excessive de la p73) (15,16). Le mode de révélation de ces lymphomes est peu spéci- fique et parfois banal. L'obstruction nasale représente le.

  17. Indian Arts in Canada

    Science.gov (United States)

    Tawow, 1974

    1974-01-01

    A recent publication, "Indian Arts in Canada", examines some of the forces, both past and present, which are not only affecting American Indian artists today, but which will also profoundly influence their future. The review presents a few of the illustrations used in the book, along with the Introduction and the Foreword. (KM)

  18. Suicide in Canada

    National Research Council Canada - National Science Library

    Leenaars, Antoon A

    1998-01-01

    ... provides long-awaited information that focuses specifically on Canada. It addresses suicide as a multidimensional problem with biological, psychological, cultural, sociological, personal, and philosophical aspects. The contributions integrate both critical analysis and personal experience. There are accounts from Inuit elders, fr...

  19. The butterflies of Canada

    National Research Council Canada - National Science Library

    Layberry, Ross A; Hall, Peter W; Lafontaine, J. Donald

    1998-01-01

    ... for the close to three hundred butterfly species recorded in Canada, including descriptions of early stages, subspecies, and key features that help distinguish similar species. Each species of butterfly has an individual distribution map, generated from a database of more than 90,000 location records. More than just a field guide to identifying Canadian butterfli...

  20. Acid precipitation in Canada

    Science.gov (United States)

    P. W. Summers; D. M. Whelpdale

    1976-01-01

    The total annual emissions of sulfur oxides and nitrogen oxides in Canada are estimated to be 7.2 x 106 tons and 1.4 x 106 tons, respectively. These figures represent 5% and 2%, respectively, of the estimated worldwide anthropogenic emissions. Nearly two-thirds of the Canadian SO2 emissions come from...

  1. Changes in distribution of Canada geese nesting in Arkansas

    Science.gov (United States)

    Krementz, David G.; Ronke, M. Eliese

    2015-01-01

    The reintroduced Canada goose (Branta canadensis) population in Arkansas has grown in range and abundance in recent decades. We determined the geographic range of Arkansas resident Canada geese from 2004 to 2012 using volume contour maps from citizen science observations using eBird, a citizen science website, and hunter recovery locations from the U.S. Geological Survey Bird Banding Laboratory. Resulting maps indicate an increase in Canada goose encounters toward northwestern and southwestern Arkansas from the original relocations in the Arkansas River valley. We examined movement of Canada geese banded and recovered in Arkansas by determining the distance and angle of movement between initial and final encounter locations; 25% moved east, and 17% went west. The average distance moved from banding to recovery was 50 km (SE = 1 km). Recoveries of Canada geese banded in Arkansas were greatest in the Mississippi Flyway (58% of all geese) followed by the Central Flyway (37%) with some representation in both the Atlantic (4%) and Pacific flyways (0.9%). Movement from Arkansas to other states and Canada was influenced by goose age and sex. Older individuals traveled longer distances than younger ones, and females traveled longer distances than males. Our findings suggest that recently established Canada geese in Arkansas have slowly expanded within the state to the northwest and southwest with the expansion to the east being important now. Movement of Arkansas resident Canada geese on molt-migration can contribute to management issues in other states and provinces.

  2. Charged particle density distributions in Au+ Au collisions at ...

    Indian Academy of Sciences (India)

    ... measured in Au + Au collisions using the BRAHMS detector at RHIC. The results are presented as a function of the collision centrality and the center of mass energy. They are compared to the predictions of different parton scattering models and the important role of hard scattering processes at RHIC energies is discussed ...

  3. Prolonged reorganization of thiol-capped Au nanoparticles layered structures

    Directory of Open Access Journals (Sweden)

    Sarathi Kundu

    2013-09-01

    Full Text Available Prolonged reorganization behaviour of mono-, di-, tri- and multi-layer films of Au nanoparticles prepared by Langmuir-Blodgett method on hydrophobic Si(001 substrates have been studied by using X-ray scattering techniques. Out-of-plane study shows that although at the initial stage the reorganization occurs through the compaction of the films keeping the layered structure unchanged but finally all layered structures modify to monolayer structure. Due to this reorganization the Au density increases within the nanometer thick films. In-plane study shows that inside the reorganized films Au nanoparticles are distributed randomly and the particle size modifies as the metallic core of Au nanoparticles coalesces.

  4. The Framework for US-Canada Defense and Security Cooperation

    Science.gov (United States)

    2007-03-15

    security trump card is played only sparingly. Finally, how US and Canada cooperation manifests itself affects US overall military strategy and force...solidified through a series of international and bilateral trade agreements culminating in the North American Free Trade Agreement ( NAFTA ) of 1994. NAFTA ...The 1989 Canada-US Free Trade Agreement and NAFTA were hotly-debated issues, a trend which continues today with initiatives towards further integration

  5. Magnetoresistance of Au films

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, D. L., E-mail: zhangdl@iphy.ac.cn; Song, X. H.; Zhang, X. [Institute of Physics, Chinese Academy of Sciences, Beijing 10081 (China); Zhang, X.-G., E-mail: xgz@ufl.edu [Department of Physics and Quantum Theory Project, University of Florida, Gainesville, Florida 32611 (United States); Center for Nanophase Materials Sciences and Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6493 (United States)

    2014-12-14

    Classical magnetoresistance (MR) in nonmagnetic metals are conventionally understood in terms of the Kohler rule, with violation usually viewed as anomalous electron transport, in particular, as evidence of non-Fermi liquid behavior. Measurement of the MR of Au films as a function of temperature and film thickness reveals a strong dependence on grain size distribution and clear violation of the Kohler rule. Using a model of random resistor network, we show that this result can be explained if the MR arises entirely from inhomogeneity due to grain boundary scattering and thermal activation of grain boundary atoms. Consequently, the Kohler rule should not be used to distinguish normal and anomalous electron transport in solids.

  6. View all initiatives | IDRC - International Development Research ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Joint Canada-Israel Health Research Program. Initiative. The Joint Canada-Israel Health Research Program is a 7-year, CA$35M Canadian-Israeli effort that draws on the unique scientific strengths of both countries and facilitates networking opportunities with peers from Africa, Asia, and Latin America. We fund researchers ...

  7. Measurement of the dielectron continuum in p+p and Au+Au collisions at RHIC

    CERN Document Server

    Dahms, Torsten

    2010-01-01

    PHENIX has measured the e^+e^- pair continuum in sqrt(s_NN) = 200 GeV Au+Au and p+p collisions over a wide range of mass and transverse momenta. While the p+p data in the mass range below the phi meson are well described by known contributions from light meson decays, the Au+Au minimum bias inclusive mass spectrum shows an enhancement by a factor of 4.7 +/- 0.4(stat)} +/- 1.5(syst) +/- 0.9(model) in the mass range 0.15initial temperatures ranging from T_init ~= 300-600 MeV at times of 0.6-0.15 fm/c after the collision.

  8. Midwifery education in Canada.

    Science.gov (United States)

    Butler, Michelle M; Hutton, Eileen K; McNiven, Patricia S

    2016-02-01

    This article is part of a special series on midwifery education and describes the approach to midwifery education in Canada We begin with an overview of the model of midwifery practice introduced in Canada in the 1990s. We describe the model of midwifery education developed and report how it is implemented, with particular attention to the two longest established programs. Midwifery education programs in Ontario and British Columbia. Midwifery education programs in Canada are offered at the undergraduate baccalaureate level at universities and are typically four years in length. Programs are competence-based and follow a spiral curriculum. The first semesters focus on on core sciences, social sciences and introduction to midwifery concepts. Students spend fifty percent of the program in clinical practices with community-based midwives. Innovative education models enable students to be placed in distant placements and help to align theoretical and practice components. Clinically active faculty adds to the credibility of teaching but bring its own challenges for midwifery educators. The Canadian model of midwifery education has been very effective with low attrition rates and high demand for the number of places available. Further program expansion is warranted but is contingent on the growth of clinical placements. Copyright © 2015 Elsevier Ltd. All rights reserved.

  9. Initial steps of the base excision repair pathway within the nuclear architecture; Les etapes initiales du mecanisme de reparation par excision de bases au sein de l'architecture nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Amouroux, R

    2009-09-15

    Oxidative stress induced lesions threaten aerobic organisms by representing a major cause of genomic instability. A common product of guanine oxidation, 8-oxo-guanine (8- oxoG) is particularly mutagenic by provoking G to T transversions. Removal of oxidised bases from DNA is initiated by the recognition and excision of the damaged base by a DNA glycosylase, initiating the base excision repair (BER) pathway. In mammals, 8-oxoG is processed by the 8-oxoG-DNA-glycosylase I (OGG1), which biochemical mechanisms has been well characterised in vitro. However how and where this enzyme finds the modified base within the complex chromatin architecture is not yet understood. We show that upon induction of 8-oxoG, OGG1, together with at least two other proteins involved in BER, is recruited from a soluble fraction to chromatin. Formation kinetics of this patches correlates with 8-oxoG excision, suggesting a direct link between presence of this chromatin-associated complexes and 8-oxoG repair. More precisely, these repair patches are specifically directed to euchromatin regions, and completely excluded from heterochromatin regions. Inducing of artificial chromatin compaction results in a complete inhibition of the in vivo repair of 8-oxoG, probably by impeding the access of OGG1 to the lesion. Using OGG1 mutants, we show that OGG1 direct recognition of 8-oxoG did not trigger its re-localisation to the chromatin. We conclude that in response to the induction of oxidative DNA damage, the DNA glycosylase is actively recruited to regions of open chromatin allowing the access of the BER machinery to the lesions. (author)

  10. Canada Among Nations 2013, Canada-Africa Relations: Looking ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    19 août 2013 ... Depuis 1984, la collection Canada Among Nations invite d'éminents chercheurs et praticiens du Canada et de l'étranger à évaluer ensemble la politique étrangère du Canada. Préparé par la Norman Paterson School of International Affairs (NPSIA) de l'Université Carleton, le numéro de 2013 est le premier ...

  11. Active Canada 20/20: A physical activity plan for Canada.

    Science.gov (United States)

    Spence, John C; Faulkner, Guy; Costas Bradstreet, Christa; Duggan, Mary; Tremblay, Mark S

    2016-03-16

    Physical inactivity is a pressing public health concern. In this commentary we argue that Canada's approach to increasing physical activity (PA) has been fragmented and has lacked coordination, funding and a strategic approach. We then describe a potential solution in Active Canada 20/20 (AC 20/20), which provides both a national plan and a commitment to action from non-government and public sectors with a view to engaging corporate Canada and the general public. It outlines a road map for initiating, coordinating and implementing proactive initiatives to address this prominent health risk factor. The identified actions are based on the best available evidence and have been endorsed by the majority of representatives in the relevant sectors. The next crucial steps are to engage all those involved in public health promotion, service provision and advocacy at the municipal, provincial and national levels in order to incorporate AC 20/20 principles into practice and planning and thus increase the PA level of every person in Canada. Further, governments, as well as the private, not-for-profit and philanthropic sectors, should demonstrate leadership and continue their efforts toward providing the substantial and sustained resources needed to recalibrate Canadians' habitual PA patterns; this will ultimately improve the overall health of our citizens.

  12. Charged-particle multiplicity at mid-rapidity in Au–Au collisions at ...

    Indian Academy of Sciences (India)

    The particle density at mid-rapidity is an essential global variable for the characterization of nuclear collisions at ultra-relativistic energies. It provides information about the initial conditions and energy density reached in these collisions. The pseudorapidity densities of charged particles at mid-rapidity in Au + Au collisions at ...

  13. Multifragmentation in Au + Au collisions studied with AMD-V

    Energy Technology Data Exchange (ETDEWEB)

    Ono, Akira [Tohoku Univ., Sendai (Japan). Faculty of Science

    1998-07-01

    AMD-V is an optimum model for calculation of multifragmentation in Au + Au collisions. AMD-V consider anti-symmetry of incident nucleus, target nucleus and fragments, furthermore, it treat the quantum effect to exist many channels in the intermediate and final state. 150 and 250 MeV/nucleon incident energy were used in the experiments. The data of multifragment atom in {sup 197}Au + {sup 197}Au collisions was reproduced by AMD-V calculation using Gognny force, corresponding to the imcompressibility of nuclear substance K = 228 MeV and its mean field depend on momentum. When other interaction (SKG 2 force, corresponding to K = 373 KeV) was used an mean field does not depend on momentum, the calculation results could not reproduce the experimental values, because nucleus and deuteron were estimated too large and {alpha}-particle and intermediate fragments estimated too small. (S.Y.)

  14. Biosupported Bimetallic Pd Au Nanocatalysts for Dechlorination of Environmental Contaminants

    Energy Technology Data Exchange (ETDEWEB)

    De Corte, S.; Fitts, J.; Hennebel, T.; Sabbe, T.; Bliznuk, V.; Verschuere, S.; van der Lelie, D.; Verstraete, W.; Boon, N.

    2011-08-30

    Biologically produced monometallic palladium nanoparticles (bio-Pd) have been shown to catalyze the dehalogenation of environmental contaminants, but fail to efficiently catalyze the degradation of other important recalcitrant halogenated compounds. This study represents the first report of biologically produced bimetallic Pd/Au nanoparticle catalysts. The obtained catalysts were tested for the dechlorination of diclofenac and trichloroethylene. When aqueous bivalent Pd(II) and trivalent Au(III) ions were both added to concentrations of 50 mg L{sup -1} and reduced simultaneously by Shewanella oneidensis in the presence of H{sub 2}, the resulting cell-associated bimetallic nanoparticles (bio-Pd/Au) were able to dehalogenate 78% of the initially added diclofenac after 24 h; in comparison, no dehalogenation was observed using monometallic bio-Pd or bio-Au. Other catalyst-synthesis strategies did not show improved dehalogenation of TCE and diclofenac compared with bio-Pd. Synchrotron-based X-ray diffraction, (scanning) transmission electron microscopy and energy dispersive X-ray spectroscopy indicated that the simultaneous reduction of Pd and Au supported on cells of S. oneidensis resulted in the formation of a unique bimetallic crystalline structure. This study demonstrates that the catalytic activity and functionality of possibly environmentally more benign biosupported Pd-catalysts can be improved by coprecipitation with Au.

  15. Pain medicine--a new credential in Canada.

    Science.gov (United States)

    Morley-Forster, Patricia; Karpinski, Jolanta

    2015-06-01

    In 2010, Pain Medicine was formally recognized as a subspecialty in Canada by the Royal College of Physicians and Surgeons of Canada, a national organization with oversight of the medical education of specialists in Canada. The first trainees began their training at the Western University, London, Canada in July, 2014. This article traces the process of Pain Medicine's development as a discipline in Canada and outlines its multiple entry routes, 2-year curriculum, and assessment procedures. The application for specialty status was initiated in 2007 with the understanding that while Anesthesiology would be the parent specialty, the curriculum would train clinicians in a multidisciplinary setting. To receive recognition as a Royal College subspecialty, Pain Medicine had to successfully pass through three phases, each stage requiring formal approval by the Committee on Specialties. The multiple entry routes to this 2-year subspecialty program are described in this article as are the objectives of training, the curriculum, assessment of competency and the practice-eligibility route to certification. The process of accreditation of new training programs across Canada is also discussed. The new Pain Medicine training program in Canada will train experts in the prevention, diagnosis, treatment and rehabilitation of the spectrum of acute pain, cancer pain and non-cancer pain problems. These physicians will become leaders in education, research, advocacy and administration of this emerging field. Wiley Periodicals, Inc.

  16. Face au risque

    CERN Document Server

    Grosse, Christian; November, Valérie

    2007-01-01

    Ce volume collectif sur le risque inaugure la collection L'ÉQUINOXE. Ancré dans l'histoire pour mesurer les continuités et les ruptures, il illustre la manière dont les sciences humaines évaluent et mesurent les enjeux collectifs du risque sur les plans politiques, scientifiques, énergétiques, juridiques et éthiques. Puisse-t-il nourrir la réflexion sur la culture et la prévention du risque. Ses formes épidémiques, écologiques, sociales, terroristes et militaires nourrissent les peurs actuelles, structurent les projets sécuritaires et constituent - sans doute - les défis majeurs à notre modernité. Dans la foulée de la richesse scientifique d'Equinoxe, L'ÉQUINOXE hérite de son esprit en prenant à son tour le pari de contribuer - non sans risque - à enrichir en Suisse romande et ailleurs le champ éditorial des sciences humaines dont notre société a besoin pour forger ses repères. Après Face au risque suivra cet automne Du sens des Lumières. (MICHEL PORRET Professeur Ordinaire à la F...

  17. Reimagining Haj Khalil v. Canada

    Directory of Open Access Journals (Sweden)

    Reem Bahdi

    2009-02-01

    Full Text Available This paper emphasizes the importance of cultural competence for tort law by analyzing the Federal Court’s decision in Haj Khalil v. Canada. Given that this symposium in honour of Rose Voyvodic’s life and work is entitled “Re-Imagining Access to Justice,” this paper asks “how do the principles of cultural competence allow us to think about the facts of the Haj Khalil differently. In particular, what would a cause in fact analysis look like if it were informed by the principles of cultural competence?” My analysis proceeds by “reading the silences” or focusing on the unstated assumptions and unexplored elements of Haj Khalil’s story to bring into focus factors relevant to factual causation which remain largely unexplored or undervalued by the Federal Court. An examination of the facts that framed Haj Khalil`s claim against immigration officials through a culturally competent lens would open the possibility of a different understanding of causation as it arises on the facts of the case. While Canadian courts have emphasized the importance of social context for fair judgment, they have not fully come to grips with the implications of social context for judicial decision-making. This is particularly the case within negligence law which remains vexed by the need to maintain an objective standard while simultaneously recognizing the importance of context and circumstance to particular claims. Cet article souligne l’importance de la compétence culturelle pour le droit de la responsabilité civile délictuelle en analysant le jugement Haj Khalil c. Canada de la Cour Fédérale. Vu que ce symposium en honneur de la vie et de l’oeuvre de Rose Voyvodic est intitulé « Re-Imagining Access to Justice», cet article pose la question «comment les principes de compétence culturelle nous permettent-ils de concevoir différemment les faits de Haj Khalil. En particulier, comment se présenterait la causalité si l’analyse des faits

  18. Evolution and origin of brines in proterozoic basins in the vicinity of the basement / cover unconformity. Application to uranium deposits in the Kombolgie (Australia) and Athabasca (Canada) basins; Evolution et origine des saumures dans les bassins proterozoiques au voisinage de la discordance socle/couverture. L'exemple de l'environnement des gisements d'uranium associes aux bassins Kombolgie (Australie) et Athabasca (Canada)

    Energy Technology Data Exchange (ETDEWEB)

    Derome, D

    2002-11-01

    The nature, evolution and origin of the fluids circulating at the basis of two Proterozoic sandstone basins (Kombolgie, Australia and Athabasca, Canada), associated with unconformity type uranium mineralization have been characterised. The coupling of several techniques (micro-thermometry, Raman, LIBS) for analysing individual fluid inclusions trapped in different quartz generations, sampled in the vicinity of Australian and Canadian uranium deposits, has led to the quantitative determination of the composition of the paleo-fluids which may have had a role in the genesis of these deposits. The P-T,x evolution of these fluids, in the vicinity of the interface between the basement and the sedimentary cover, has been reconstructed. The proposed fluid circulation model for the two basins is the following: - A sodium dominated chloride-rich brine (15-20 wt% NaCl + 4-12 wt% CaCl{sub 2}), highly oxidising (equilibrated with hematite) is responsible for the early diagenetic silicification. - The circulation of a calcium chloride-rich brine (25-30 wt.% CaCl{sub 2}+0-10 wt.% NaCl) was responsible for the deposition of a second quartz generation and dravite (magnesium-rich tourmaline) in the sandstone at the nose of the reverse basement-rooted faults. The highly calcic nature of this brine probably results from the evolution of the sodic brine through Na{r_reversible}Ca exchange in the basement. A low salinity fluid with traces of methane was heated heated in the basement rocks. It was mixed with the brines at the basis of the Kombolgie basin, during tectonic movements and hydraulic brecciation. This fluid has been rarely observed in the Canadian deposits. This study has shown many similarities between the fluid regimes of the Kombolgie and Athabasca basins. In both districts, a mixing between two Na-Ca-(Mg) chloride brines has been evidenced. Estimated temperatures and depths (about 5 km) are similar for both basins. However the brines observed at the basis of the Athabasca

  19. Transnational surrogacy: Canada's contradictions.

    Science.gov (United States)

    Lozanski, Kristin

    2015-01-01

    Transnational commercial surrogacy represents a form of medical tourism undertaken by intended parents who seek to hire women in other countries, increasingly often in the global South, as surrogates. While much of the scholarly literature focuses on the conditions of surrogacy within host countries, such as India, there has been limited analysis of transnational surrogacy focused upon origin countries. In this article, I build upon the scholarship that explores the impact of host country structures on transnational surrogacy, with special attention to the significance of Canadian citizenship policy through analysis of legislation and policy vis-à-vis transnational commercial surrogacy. The Canadian case demonstrates clear contradictions between the legislation and policy that is enacted domestically to prohibit commercial surrogacy within Canada and legislation and policy that implicitly sanctions commercial surrogacy through the straightforward provision of citizenship for children born of such arrangements abroad. The ethical underpinnings of Canada's domestic prohibition of commercial surrogacy, which is presumed to exploit women and children and to impede gender equality, are violated in Canada's bureaucratic willingness to accept children born of transnational commercial surrogacy as citizens. Thus, the ethical discourses apply only to Canadian citizens within Canadian geography. The failure of the Canadian government to hold Canadian citizens who participate in transnational commercial surrogacy to the normative imperatives that prohibit the practice within the country, or to undertake a more nuanced, and necessarily controversial, discussion of commercial surrogacy reinforces transnational disparities in terms of whose bodies may be commodified as a measure of gendered inequality. Copyright © 2014 Elsevier Ltd. All rights reserved.

  20. Tuberculose hépatique nodulaire: complication inhabituelle au ...

    African Journals Online (AJOL)

    -tumorale dont le tableau clinico-biologique et radiologique initial était aspécifique. Il s'agit d'un jeune marocain suivi pour maladie de Wilson et présentant une fièvre au long cours. L'imagerie met en évidence une lésion nodulaire hépatique ...

  1. Anisotropic syntheses of boat-shaped core shell Au Ag nanocrystals and nanowires

    Science.gov (United States)

    Yang, Zusing; Chang, Huan-Tsung

    2006-05-01

    This paper describes the syntheses of boat-shaped core-shell Au-Ag bimetallic nanoparticles (NPs) and Au-Ag bimetallic nanowires (NWs). Initially, gold nanorods (AuNRs) having lengths and widths of 70 ± 18 and 12 ± 2 nm, respectively, were prepared from gold seeds in the presence of hexadecyltrimethylammonium bromide (CTAB), benzyldimethylammonium chloride (BDAC), NaAuCl4, AgNO3, and ascorbic acid. The thus-prepared AuNRs were then used to prepare boat-shaped core-shell Au-Ag bimetallic NPs in a glycine solution (pH 8.0) containing CTAB, AgNO3, and ascorbic acid. The CTAB/BDAC molar ratio and the AgNO3 concentration were important parameters affecting the anisotropy of the products. Silver atoms were deposited at both ends of the AuNRs to form the boat-shaped core-shell Au-Ag bimetallic NPs. Upon coalescence of the NPs at 88 ± 2 °C, the boat-shaped core-shell Au-Ag bimetallic NPs assembled into the form of NWs. These NWs, which were stable in solution at room temperature for at least 3 weeks, formed nanomaterials containing AuNRs after being heated at 210 °C for 15 min, i.e. as a result of the melting of the BDAC and silver shells.

  2. Spectroscopically forbidden infra-red emission in Au-vertical graphene hybrid nanostructures

    Science.gov (United States)

    Sivadasan, A. K.; Parida, Santanu; Ghosh, Subrata; Pandian, Ramanathaswamy; Dhara, Sandip

    2017-11-01

    Implementation of Au nanoparticles (NPs) is a subject for frontier plasmonic research due to its fascinating optical properties. Herein, the present study deals with plasmonic assisted emission properties of Au NPs-vertical graphene (VG) hybrid nanostructures. The influence of effective polarizability of Au NPs on the surface enhanced Raman scattering and luminescence properties is investigated. In addition, a remarkable infra-red emission in the hybrid nanostructures is observed and interpreted on the basis of intra-band transitions in Au NPs. The flake-like nanoporous VG structure is invoked for the generation of additional confined photons to impart additional momentum and a gradient of confined excitation energy towards initiating the intra-band transitions of Au NPs. Integrating Au plasmonic materials in three-dimensional VG nanostructures enhances the light–matter interactions. The present study provides a new adaptable plasmonic assisted pathway for optoelectronic and sensing applications.

  3. Canada's population is aging.

    Science.gov (United States)

    Verma, Jennifer; Samis, Stephen

    2011-01-01

    Canada's population is aging, and the authors of this issue's lead article, Neena Chappell and Marcus Hollander, present a policy prescription for how to design a healthcare system that better responds to needs of older Canadians. The timing of this issue of Healthcare Papers is important: the first of the baby boomers turned 65 in January 2011. There is a pressing need to develop policies and implement sustainable reforms that will allow older adults to stay healthier and maintain their independence longer in their place of choice, while also creating efficiencies and quality improvements in our overall healthcare system that will benefit Canadians of all ages.

  4. Wetting - Dewetting Transitions of Au/Ni Bilayer Films

    Science.gov (United States)

    Cen, Xi

    the initial deposition sequence of the as-deposited Au/Ni/SiO2/Si interface structure, the majority of the metal/SiO2 interface is Au/SiO2 after annealing at 675°C for 1 hour. Cross-Sectional TEM revealed that void nucleation is predominantly observed at Au/Ni/SiO 2 triple junctions, rather than grain boundary grooving at free surface of the metal film. The formation of Au/SiO2 interface sections is found to be energetically preferred over Ni/SiO2 due to compressive stress in the as-deposited Ni layer. In-situ cross-sectional TEM heating studies demonstrate that the dewetting transition initiates at 400°C. Au diffuses through Ni grain boundaries towards the underlying Ni layer and forms more energetically favorable Au/SiO2 interface. The adsorption of Au along Ni grain boundaries, NiOx/Ni and SiO2/Ni phase boundaries is observed to lower the interfacial energy. The experimental observations suggest that alloying, unequal self-diffusion coefficient and metal/metal interface strongly affect the bilayer dewetting process.

  5. PHENIX Measurements of Single Electrons from Charm and Bottom Decays at Midrapidity in Au + Au Collisions

    Science.gov (United States)

    McGlinchey, D.

    2016-12-01

    Heavy quarks are an ideal probe of the quark gluon plasma created in heavy ion collisions. They are produced in the initial hard scattering and therefore experience the full evolution of the medium. PHENIX has previously measured the modification of heavy quark production in Au+Au collisions at √{sNN} = 200 GeV via electrons from semileptonic decays, which indicated substantial modifications of the parent hadron momentum distribution. The PHENIX barrel silicon vertex detector (VTX), installed in 2011, allows for the separation of electrons from charm and bottom hadron decays through the use of displaced vertex measurements. These proceedings present the results of the completed analysis of the 2011 data set using the VTX.

  6. PHENIX results on low pT direct photons in Au + Au collisions

    Science.gov (United States)

    Petti, Richard

    2016-12-01

    Since soft photons are unmodified once produced in heavy ion collisions, they give information about the entire thermal evolution of the medium. Excess photon yield over the expectation from initial hard scattering has been measured by PHENIX. In addition, PHENIX has measured a large azimuthal anisotropy, v2, of these soft photons with respect to the reaction plane. The large yield and v2 have been difficult to describe quantitatively and raise important questions about the early time dynamics in the medium. It is thus important to make more differential measurements to distinguish various potential explanations for this thermal photon puzzle. In this proceedings, we present yields, v2, and v3 of direct photons from √{sNN} = 200 GeV Au + Au collisions.

  7. Chiral magnetic effect search in p+Au, d+Au and Au+Au collisions at RHIC

    Science.gov (United States)

    Zhao, Jie; STAR Collaboration

    2017-09-01

    The chiral magnetic effect (CME) is a fundamental property of QCD. A major background source for CME measurements is the intrinsic particle correlations (such as resonances/jets decay) coupled with the azimuthal elliptical anisotropy v2. In heavy-ion collisions, the magnetic field direction and event plane azimuthal angle Ψ2 are correlated, thus the CME and the v2-induced background are entangled. In small system p+Au and d+Au collisions, the Ψ2 is mostly due to geometry fluctuations, and thus magnetic field direction and Ψ2 are uncorrelated. The correlation measurements in small system collisions with respect to Ψ2 are only sensitive to v2-induced background while any CME is averaged to zero. In this talk, we will present the STAR measurements of two-particle correlations with respect to Ψ2 in p+Au, d+Au and Au+Au collisions at √{sNN} = 200 GeV. These results are analyzed as a function of particle multiplicity to shed light on the background contaminations of the CME measurements in heavy-ion collisions. We will also report results from a new analysis approach as a function of the particle pair invariant mass in order to suppress non-CME related physics backgrounds.

  8. Growth of large aspect ratio AuAg bimetallic nanowires on Si(110) substrate

    Science.gov (United States)

    Bhukta, Anjan; Guha, Puspendu; Satpati, Biswarup; Maiti, Paramita; Satyam, Parlapalli V.

    2017-06-01

    Large aspect ratio bimetallic nanowire structures comprise potential applications in areas such as higher catalytic activity and surface Raman enhancement spectroscopy (SERS) substrates. By using the highly anisotropic ultra-clean Si(110) surface and with initial growth of sub monolayer (ML) Ag on such surface, a high aspect ratio AuAg bimetallic nanostructures can be formed. We report on the formation of large aspect ratio (>7.2 ± 0.8) AuAg nanowires on ultra-clean Si(110) surfaces using 0.5 ML Ag followed by 3.0 ML Au using molecular beam epitaxy (MBE) at a growth temperature of 300 °C. Under similar growth conditions without pre-deposition of Ag and only with deposition of 3.0 ML of Au consequences smaller aspect ratio (2.1 ± 0.1) monometallic Au nanostructures. The enhancement in aspect ratio of the nanostructures is attributed to the formation of one dimensional Ag layer (prior to Au growth) and Au-Ag bimetallic intermixing at elevated temperature. Considering deposition of 3.0 ML Au, a regime of substrate temperature ≈ 270-330 °C is found to be optimum to growth some of high aspect ratio (>25.0) AuAg nanowires as well. Exterior of this regime, at lower temperature due to low mobility of the ad-atoms and at higher temperature due to probable inter-diffusion of Ag, such extremely high aspect ratio AuAg nanowires found to be infrequent to grow. For growth at substrate temperature 300 °C, mean aspect ratio of the AuAg nanostructures is gradually increased in accordance with Au thickness up to 3.0 ML due to preferential accumulation of ad-atoms (Au, Ag) along Si and thereafter reduces for adequate accumulation along Si .

  9. Solution plasma synthesis of Au nanoparticles for coating titanium dioxide to enhance its photocatalytic activity

    Energy Technology Data Exchange (ETDEWEB)

    Nakasugi, Yuki; Saito, Genki [Center for Advanced Research of Energy and Materials, Hokkaido University, Sapporo 060-8628 (Japan); Yamashita, Toru [Faculty of Engineering, Hokkaido University, Sapporo 060-8628 (Japan); Sakaguchi, Norihito [Center for Advanced Research of Energy and Materials, Hokkaido University, Sapporo 060-8628 (Japan); Akiyama, Tomohiro, E-mail: takiyama@eng.hokudai.ac.jp [Center for Advanced Research of Energy and Materials, Hokkaido University, Sapporo 060-8628 (Japan)

    2015-05-29

    A convenient method for coating titanium dioxide (TiO{sub 2}) by Au nanoparticles (AuNPs) is demonstrated in solution plasma to improve the photocatalytic activity of TiO{sub 2}. AuNPs from a metallic Au electrode were bonded to the surface of a commercial TiO{sub 2} powder, which acted as a catalyst support, with the reaction taking place in an electrolyte solution. The effect of diverse plasma conditions on the size and productivity of the AuNPs was investigated initially to provide a reference in the absence of TiO{sub 2}. At 290 V, “partial plasma” was attained, with only a weak light emission surrounding the Au electrode. Conditions then evolved to “full plasma”, with a strong orange emission at 330 V. Partial or full status was maintained for 1 h at 300 and 400 V, respectively. At the transition to full, the AuNP particle size increased from 3.72 to 6.09 nm and the productivity increased dramatically from 0.025 to 0.87 mg h{sup −1} mm{sup −2}. Stronger plasma very efficiently synthesized AuNPs, and therefore, it was adopted for further study. AuNP-TiO{sub 2} combinations were formed by applying 400 V to a TiO{sub 2}-dispersed solution. In these experiments, TiO{sub 2} coated with AuNPs was synthesized; these combinations of AuNP-TiO{sub 2} had 0.44 mol% of Au. The photocatalytic activity of AuNP-TiO{sub 2} was investigated by measuring the degradation of Rhodamine B (RhB). Under UV irradiation, the AuNP-TiO{sub 2} particles removed up to 95% of the dye in 70 min. Commercial TiO{sub 2} achieves values closer to 85%. The results thus raise the possibility that solution plasma methods can be generalized as a means for achieving catalysis-enhancing coatings. - Highlights: • Au nanoparticles with a diameter of several nm were synthesized by solution plasma. • The effect of plasma conditions on the Au nanoparticles formation was investigated. • High resolution TEM was conducted to investigate the crystal structure. • Au nanoparticles were coated

  10. Le processus de révision et l'écriture informatisée – Description des utilisations du traitement de texte par des élèves du secondaire au Québec Writing with technologies: uses of word processors by Quebec (Canada students

    Directory of Open Access Journals (Sweden)

    Pascal Grégoire

    2013-04-01

    Full Text Available Les TIC modifient substantiellement l'acte scriptural : en influençant les processus cognitifs chez les scripteurs, elles libèrent des ressources cognitives (Daiute, 1983 ; Jonassen, 1999. Pourtant, malgré cette influence, les scripteurs informatisés se contentent souvent d'apporter des modifications de surface à leurs textes (Faigley & Witte, 1981 ; Figueredo & Varnhagen, 2006. Nous avons donc voulu décrire comment les TIC interviennent réellement dans le processus cognitif de révision. Pour y parvenir, nous avons procédé selon une approche qualitative, fondée sur l'observation de scripteurs informatisés (N = 11. Nous avons analysé le type d'interaction qu'ils entretiennent avec le correcteur d'orthographe ; de plus, nous avons analysé les verbalisations concurrentes à la tâche ainsi qu'une série d'entrevues de groupe. De façon générale, nous avons constaté une utilisation somme toute limitée des outils informatiques, que les scripteurs n'arrivent pas à exploiter pleinement. Le manque d'habiletés au clavier et au traitement de texte pourrait constituer une entrave à une utilisation plus rentable des TIC.ICT have greatly changed the art of writing. Through their influence on the cognitive processes, they have liberated writers' cognitive resources (Daiute, 1983; Jonassen, 1999. Despite these possibilities, however, computer writers often make only superficial changes when revising their compositions (Faigley & Witte, 1981; Figueredo & Varnhagen, 2006. We therefore wanted to describe how ICT actually intervene in the cognitive revision process. We used a qualitative approach based on observations of computer writers (N = 11. We analyzed their use of the spell check function as well as their verbalizations concurrent with the task and a series of group interviews. In general, we found that the writers made only limited use of the computer tools at their disposal, and did not exploit their full potential. Poor

  11. OECD Economic Surveys: Canada 2012

    Science.gov (United States)

    OECD Publishing (NJ3), 2012

    2012-01-01

    Canada weathered the global economic crisis well, mainly reflecting sustained growth in domestic pending, and the economy is continuing to grow despite the persistence of international turbulence, most recently stemming from the euro zone sovereign debt crisis. In Canada's case, several factors are acting in its favour. Federal fiscal plans are…

  12. Canada-U.S. Relations

    Science.gov (United States)

    2010-09-03

    61 Access to Medicines ...and Mexico . Canada claims the rule is a non-tariff barrier that has led to a steep drop in beef and hog shipments to U.S. processors...concern about trade in pirated and counterfeit goods in Canada, as well as weak enforcement and relatively lax penalties

  13. 75 FR 10634 - Agricultural Inspection and AQI User Fees Along the U.S./Canada Border

    Science.gov (United States)

    2010-03-09

    ... provided at a port of entry are determined by APHIS and CBP risk analyses to target conveyances or host... initial staffing plan: 65 airport pre-clearance inspectors in Canada, costing $46 million, and 136 inspectors along the U.S./Canada border, costing $22.45 million. As stated previously, the staffing plan in...

  14. An update of a national database of low-level radioactive waste in Canada

    Energy Technology Data Exchange (ETDEWEB)

    De, P.L.; Barker, R.C. [Atomic Energy Canada Ltd. Research, Ottawa, Ontario (Canada). Low-Level Radioactive Waste Management Office

    1993-03-01

    This paper gives an overview and update of a national database of low-level radioactive waste in Canada. To provide a relevant perspective, Canadian data are compared with US data on annual waste arisings and with disposal initiatives of the US compacts and states. Presented also is an assessment of the data and its implications for disposal solutions in Canada.

  15. Étude des distributions de contraintes autour d'un puits pétrolier. Application au calcul des pressions d'initiation de fracturation hydraulique Research on Stress Distribution Around an Oil Or Gas Well. Application to Calculating Pressures for Initiating Hydraulic Fracturing

    Directory of Open Access Journals (Sweden)

    Skoczylas F.

    2006-11-01

    Full Text Available Des méthodes de résolution analytiques et numériques ont été proposées, pour déterminer les distributions de contraintes autour de forages pétroliers dans le cas de matériaux peu résistants. Le calcul de ces distributions aboutit à la détermination des pressions de fracturation. Le critère de plasticité de Mohr-Coulomb a été choisi pour la résolution analytique. Cette étude permet d'établir trois schémas types de distribution de contraintes, au moment de la fracturation, pour un régime permanent d'écoulement. La géométrie axisymétrique du modèle a permis d'utiliser une méthode numérique par schéma aux différences finies. La loi de comportement du matériau est déduite du critère de plasticité de Drucker. Cette résolution permet le chargement incrémental en pression dans le forage et de simuler une injection rapide par un couplage simplifié fluide-squelette. Le modèle élastoplastique à deux surfaces de charge de Lade-Shao a finalement été retenu pour décrire l'écrouissage du matériau. La comparaison des résultats des différentes méthodes de calcul s'effectue sur la base de l'influence respective du coefficient de poussée au repos Ko, du coefficient de Poisson et de la résistance à la compression, Co, du matériau. Analytical and numerical methods are proposed, in order to determine stresses distribution around borehole for axisymetric problems in the case of low strengh materials. Calculation of these distributions leads to the determination of hydraulic fracture-pressure. Analytical solutions were found in the case of Mohr-Coulomb criterion and steady flow. These solutions leads to three typical stresses distributions when hydraulic fracture takes place. Because problem's axisymetry, the finite difference method was used. The constitutive law was deduced using Drücker plasticity criterion with an associated flow rule for elastic perfectly plastic behaviour. Such a numerical method can take into

  16. Non-residential fatherhood in Canada

    Directory of Open Access Journals (Sweden)

    Lisa Strohschein

    2017-04-01

    Full Text Available The purpose of this study was to shed light on non-residential fatherhood in Canada. Data come from the 2012 LISA. Analysis was restricted to fathers who had children under the age of 19 (N=3,592. Approximately 17.4% were non-residential fathers. Logistic regression models indicated that being outside a marital union, low educational attainment and low income were associated with increased odds of being a non-residential father. Teen parenthood was not a statistically significant predictor. I discuss the implications of these findings as well as the need for measures that better capture variability in the living arrangements of fathers and their children. Le but de cette étude est d’éclairer le phénomène de paternité non résidentielle au Canada. Les données proviennent du sondage LISA 2012. L'analyse est limitée aux pères ayant des enfants de moins de 19 ans (N = 3 592. Environ 17,4% sont des pères non-résidentiels. Les modèles de régression logistique indiquent qu'étant hors d'une union maritale, d'avoir un faible niveau de scolarité, et de faible revenu est associé à une probabilité élevée d'être un père non-résidentiel. Être un parent adolescent n’est pas un prédicteur statistiquement significatif. Je discute des implications de ces résultats ainsi que de la nécessité de mesures qui permettent de mieux saisir la variabilité des modes de vie des pères et de leurs enfants.

  17. L’apprentissage au cern

    CERN Multimedia

    2007-01-01

    pour les professions d’électronicien(ne) et de laborantin(e) en physique L’apprentissage au CERN est régi par les lois, règlements et contrats en vigueur dans le canton de Genève. En cas de réussite à l’examen de fin d’apprentissage, les apprentis obtiennent le Certificat fédéral de capacité suisse (CFC). 6 places au total sont ouvertes au recrutement pour les deux professions. L’apprentissage dure 4 ans. Minima requis pour faire acte de candidature : avoir au moins 15 ans et moins de 21 ans à la date de début de l’apprentissage ; avoir terminé la scolarité obligatoire, au minimum 9e du Cycle d’orientation genevois (3e en France) ; être ressortissant d’un pays membre du CERN (Allemagne, Autriche, Belgique, Bulgarie, Danemark, Espagne, Finlande, France, Grèce, Hongrie, Italie, Norvège, Pays-Bas, Pologne, Portugal, Royaume-Uni, République tchèque, République slovaque , Suède, Suisse) ; pour les résidents en Suisse : être ressortissant su...

  18. Transverse Velocity Scaling in Au+Au Fragmentation

    OpenAIRE

    Lukasik, J.; Hudan, S.; Lavaud, F.; Turzo, K.; Auger, G.; Bacri, Ch.O.; Begemann-Blaich, M.L.; Bellaize, N.; Bittiger, R.; Bocage, F.; Borderie, B.; Buchet, P.; R. Bougault(LPCC); Bouriquet, B.; Charvet, J. L.

    2002-01-01

    Invariant transverse-velocity spectra of intermediate-mass fragments were measured with the 4-pi multi-detector system INDRA for collisions of Au on Au at incident energies between 40 and 150 MeV per nucleon. Their scaling properties as a function of incident energy and atomic number Z are used to distinguish and characterize the emissions in (i) peripheral collisions at the projectile and target rapidities, and in (ii) central and (iii) peripheral collisions near mid-rapidity. The importance...

  19. Transformation of Au144(SCH2CH2Ph)60 to Au133(SPh-tBu)52 Nanomolecules: Theoretical and Experimental Study.

    Science.gov (United States)

    Nimmala, Praneeth Reddy; Theivendran, Shevanuja; Barcaro, Giovanni; Sementa, Luca; Kumara, Chanaka; Jupally, Vijay Reddy; Apra, Edoardo; Stener, Mauro; Fortunelli, Alessandro; Dass, Amala

    2015-06-04

    Ultrastable gold nanomolecule Au144(SCH2CH2Ph)60 upon etching with excess tert-butylbenzenethiol undergoes a core-size conversion and compositional change to form an entirely new core of Au133(SPh-tBu)52. This conversion was studied using high-resolution electrospray mass spectrometry which shows that the core size conversion is initiated after 22 ligand exchanges, suggesting a relatively high stability of the Au144(SCH2CH2Ph)38(SPh-tBu)22 intermediate. The Au144 → Au133 core size conversion is surprisingly different from the Au144 → Au99 core conversion reported in the case of thiophenol, -SPh. Theoretical analysis and ab initio molecular dynamics simulations show that rigid p-tBu groups play a crucial role by reducing the cluster structural freedom, and protecting the cluster from adsorption of exogenous and reactive species, thus rationalizing the kinetic factors that stabilize the Au133 core size. This 144-atom to 133-atom nanomolecule's compositional change is reflected in optical spectroscopy and electrochemistry.

  20. Solid-state dewetting of single- and bilayer Au-W thin films: Unraveling the role of individual layer thickness, stacking sequence and oxidation on morphology evolution

    Directory of Open Access Journals (Sweden)

    A. Herz

    2016-03-01

    Full Text Available Self-assembly of ultrathin Au, W, and Au-W bilayer thin films is investigated using a rapid thermal annealing technique in an inert ambient. The solid-state dewetting of Au films is briefly revisited in order to emphasize the role of initial film thickness. W films deposited onto SiO2 evolve into needle-like nanocrystals rather than forming particle-like agglomerates upon annealing at elevated temperatures. Transmission electron microscopy reveals that such nanocrystals actually consist of tungsten (VI oxide (WO3 which is related to an anisotropic oxide crystal growth out of the thin film. The evolution of W films is highly sensitive to the presence of any residual oxygen. Combination of both the dewetting of Au and the oxide crystal growth of WO3 is realized by using various bilayer film configurations of the immiscible Au and W. At low temperature, Au dewetting is initiated while oxide crystal growth is still suppressed. Depending on the stacking sequence of the Au-W bilayer thin film, W acts either as a substrate or as a passivation layer for the dewetting of Au. Being the ground layer, W changes the wettability of Au which clearly modifies its initial state for the dewetting. Being the top layer, W prevents Au from dewetting regardless of Au film thickness. Moreover, regular pattern formation of Au-WO3 nanoparticles is observed at high temperature demonstrating how bilayer thin film dewetting can create unique nanostructure arrangements.

  1. All projects related to Canada | Page 25 | IDRC - International ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Topic: RESEARCH FELLOWSHIPS, UNIVERSITIES, International cooperation. Region: North and Central America, South America, Canada. Program: Foundations for Innovation. Total Funding: CA$ 315,000.00. Linkage for Education and Research in Nursing (LEARN) : a Caribbean Initiative. Project. Nurses are the largest ...

  2. All projects related to Canada | Page 9 | IDRC - International ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Topic: NUTRITION, Food security, WOMEN, FOOD PRODUCTION, DIET, FOOD SHORTAGE. Region: Cambodia, Canada, United States. Program: Agriculture and Food Security. Total Funding: CA$ 4,500,000.00. Science Granting Councils Initiative in Sub-Saharan Africa: Strengthening Research Capacity. Project.

  3. All projects related to canada | Page 11 | IDRC - International ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Topic: HIV, AIDS, PREVENTIVE MEDICINE, VACCINES, TESTING, Disease control. Region: North of Sahara, South of Sahara, Botswana, Tanzania, Zambia, Canada, United States. Program: Maternal and Child Health. Total Funding: CA$ 1,317,190.00. Kenya AIDS Vaccine Initiative (KAVI) : a Centre of Excellence for East ...

  4. All projects related to canada | Page 19 | IDRC - International ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Topic: HIV, AIDS, PREVENTIVE MEDICINE, VACCINES, TESTING, Disease control. Region: North of Sahara, South of Sahara, Botswana, Tanzania, Zambia, Canada, United States. Program: Maternal and Child Health. Total Funding: CA$ 1,317,190.00. Kenya AIDS Vaccine Initiative (KAVI) : a Centre of Excellence for East ...

  5. Canada Selects African Health Organizations to Help Save the Lives ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    IDRC-CRDI

    working with policymakers and decision-makers to help make the best health policy decisions, and,. • identifying how nurses, doctors, and other health professionals can better deliver the care that is needed. Global Health Research Initiative. International Development Research Centre. PO Box 8500, Ottawa, ON, Canada ...

  6. Multiscale Modeling of Au-Island Ripening on Au(100

    Directory of Open Access Journals (Sweden)

    Karin Kleiner

    2011-01-01

    Full Text Available We describe a multiscale modeling hierarchy for the particular case of Au-island ripening on Au(100. Starting at the microscopic scale, density functional theory was used to investigate a limited number of self-diffusion processes on perfect and imperfect Au(100 surfaces. The obtained structural and energetic information served as basis for optimizing a reactive forcefield (here ReaxFF, which afterwards was used to address the mesoscopic scale. Reactive force field simulations were performed to investigate more diffusion possibilities at a lower computational cost but with similar accuracy. Finally, we reached the macroscale by means of kinetic Monte Carlo (kMC simulations. The reaction rates for the reaction process database used in the kMC simulations were generated using the reactive force field. Using this strategy, we simulated nucleation, aggregation, and fluctuation processes for monoatomic high islands on Au(100 and modeled their equilibrium shape structures. Finally, by calculating the step line tension at different temperatures, we were able to make a direct comparison with available experimental data.

  7. Measurement of direct photons in Au+Au collisions at √(s(NN))=200 GeV.

    Science.gov (United States)

    Afanasiev, S; Aidala, C; Ajitanand, N N; Akiba, Y; Al-Jamel, A; Alexander, J; Aoki, K; Aphecetche, L; Armendariz, R; Aronson, S H; Averbeck, R; Awes, T C; Azmoun, B; Babintsev, V; Baldisseri, A; Barish, K N; Barnes, P D; Bassalleck, B; Bathe, S; Batsouli, S; Baublis, V; Bauer, F; Bazilevsky, A; Belikov, S; Bennett, R; Berdnikov, Y; Bjorndal, M T; Boissevain, J G; Borel, H; Boyle, K; Brooks, M L; Brown, D S; Bucher, D; Buesching, H; Bumazhnov, V; Bunce, G; Burward-Hoy, J M; Butsyk, S; Campbell, S; Chai, J-S; Chernichenko, S; Chi, C Y; Chiba, J; Chiu, M; Choi, I J; Chujo, T; Cianciolo, V; Cleven, C R; Cobigo, Y; Cole, B A; Comets, M P; Connors, M; Constantin, P; Csanád, M; Csörgő, T; Dahms, T; Das, K; David, G; Delagrange, H; Denisov, A; d'Enterria, D; Deshpande, A; Desmond, E J; Dietzsch, O; Dion, A; Drachenberg, J L; Drapier, O; Drees, A; Dubey, A K; Durum, A; Dzhordzhadze, V; Efremenko, Y V; Egdemir, J; Enokizono, A; En'yo, H; Espagnon, B; Esumi, S; Fields, D E; Fleuret, F; Fokin, S L; Forestier, B; Fraenkel, Z; Frantz, J E; Franz, A; Frawley, A D; Fukao, Y; Fung, S-Y; Gadrat, S; Gastineau, F; Germain, M; Glenn, A; Gonin, M; Gosset, J; Goto, Y; Granier de Cassagnac, R; Grau, N; Greene, S V; Grosse Perdekamp, M; Gunji, T; Gustafsson, H-Å; Hachiya, T; Hadj Henni, A; Haggerty, J S; Hagiwara, M N; Hamagaki, H; Harada, H; Hartouni, E P; Haruna, K; Harvey, M; Haslum, E; Hasuko, K; Hayano, R; He, X; Heffner, M; Hemmick, T K; Heuser, J M; Hiejima, H; Hill, J C; Hobbs, R; Holmes, M; Holzmann, W; Homma, K; Hong, B; Horaguchi, T; Hur, M G; Ichihara, T; Iinuma, H; Imai, K; Imrek, J; Inaba, M; Isenhower, D; Isenhower, L; Ishihara, M; Isobe, T; Issah, M; Isupov, A; Jacak, B V; Jia, J; Jin, J; Jinnouchi, O; Johnson, B M; Joo, K S; Jouan, D; Kajihara, F; Kametani, S; Kamihara, N; Kaneta, M; Kang, J H; Kawagishi, T; Kazantsev, A V; Kelly, S; Khanzadeev, A; Kim, D J; Kim, E; Kim, Y-S; Kinney, E; Kiss, A; Kistenev, E; Kiyomichi, A; Klein-Boesing, C; Kochenda, L; Kochetkov, V; Komkov, B; Konno, M; Kotchetkov, D; Kozlov, A; Kroon, P J; Kunde, G J; Kurihara, N; Kurita, K; Kweon, M J; Kwon, Y; Kyle, G S; Lacey, R; Lajoie, J G; Lebedev, A; Le Bornec, Y; Leckey, S; Lee, D M; Lee, M K; Leitch, M J; Leite, M A L; Li, X H; Lim, H; Litvinenko, A; Liu, M X; Maguire, C F; Makdisi, Y I; Malakhov, A; Malik, M D; Manko, V I; Masui, H; Matathias, F; McCain, M C; McGaughey, P L; Miake, Y; Miller, T E; Milov, A; Mioduszewski, S; Mishra, G C; Mitchell, J T; Morrison, D P; Moss, J M; Moukhanova, T V; Mukhopadhyay, D; Murata, J; Nagamiya, S; Nagata, Y; Nagle, J L; Naglis, M; Nakamura, T; Newby, J; Nguyen, M; Norman, B E; Nyanin, A S; Nystrand, J; O'Brien, E; Ogilvie, C A; Ohnishi, H; Ojha, I D; Okada, K; Omiwade, O O; Oskarsson, A; Otterlund, I; Ozawa, K; Pak, R; Pal, D; Palounek, A P T; Pantuev, V; Papavassiliou, V; Park, J; Park, W J; Pate, S F; Pei, H; Peng, J-C; Pereira, H; Peresedov, V; Peressounko, D Yu; Pinkenburg, C; Pisani, R P; Purschke, M L; Purwar, A K; Qu, H; Rak, J; Ravinovich, I; Read, K F; Reuter, M; Reygers, K; Riabov, V; Riabov, Y; Roche, G; Romana, A; Rosati, M; Rosendahl, S S E; Rosnet, P; Rukoyatkin, P; Rykov, V L; Ryu, S S; Sahlmueller, B; Saito, N; Sakaguchi, T; Sakai, S; Samsonov, V; Sato, H D; Sato, S; Sawada, S; Semenov, V; Seto, R; Sharma, D; Shea, T K; Shein, I; Shibata, T-A; Shigaki, K; Shimomura, M; Shohjoh, T; Shoji, K; Sickles, A; Silva, C L; Silvermyr, D; Sim, K S; Singh, C P; Singh, V; Skutnik, S; Smith, W C; Soldatov, A; Soltz, R A; Sondheim, W E; Sorensen, S P; Sourikova, I V; Staley, F; Stankus, P W; Stenlund, E; Stepanov, M; Ster, A; Stoll, S P; Sugitate, T; Suire, C; Sullivan, J P; Sziklai, J; Tabaru, T; Takagi, S; Takagui, E M; Taketani, A; Tanaka, K H; Tanaka, Y; Tanida, K; Tannenbaum, M J; Taranenko, A; Tarján, P; Thomas, T L; Togawa, M; Tojo, J; Torii, H; Towell, R S; Tram, V-N; Tserruya, I; Tsuchimoto, Y; Tuli, S K; Tydesjö, H; Tyurin, N; Vale, C; Valle, H; van Hecke, H W; Velkovska, J; Vértesi, R; Vinogradov, A A; Vznuzdaev, E; Wagner, M; Wang, X R; Watanabe, Y; Wessels, J; White, S N; Willis, N; Winter, D; Woody, C L; Wysocki, M; Xie, W; Yanovich, A; Yokkaichi, S; Young, G R; Younus, I; Yushmanov, I E; Zajc, W A; Zaudtke, O; Zhang, C; Zimányi, J; Zolin, L

    2012-10-12

    We report the measurement of direct photons at midrapidity in Au+Au collisions at √(s(NN))=200 GeV. The direct photon signal was extracted for the transverse momentum range of 4 GeV/cphotons from the inclusive photon sample. The direct photon nuclear modification factor R(AA) was calculated as a function of p(T) for different Au+Au collision centralities using the measured p+p direct photon spectrum and compared to theoretical predictions. R(AA) was found to be consistent with unity for all centralities over the entire measured p(T) range. Theoretical models that account for modifications of initial direct photon production due to modified parton distribution functions in Au and the different isospin composition of the nuclei predict a modest change of R(AA) from unity. They are consistent with the data. Models with compensating effects of the quark-gluon plasma on high-energy photons, such as suppression of jet-fragmentation photons and induced-photon bremsstrahlung from partons traversing the medium, are also consistent with this measurement.

  8. Canada 2050 : four long-term scenarios for Canada's energy system

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    The Energy Sector of Natural Resources Canada initiated the Energy Technology Futures project in 1998 to develop a set of viable scenarios of what Canada's energy system could potentially look like in 30 to 50 years. The objective was to see what the effect of new technologies might have on our ability to reduce greenhouse gas emissions. Three independent drivers were used for developing the scenarios. These included: environmental etiquette, markets and the pace of innovation. The first scenario looked at a world in which greenhouse gas (GHG) emissions increased in all areas of the economy along with Canada's population and economic activity. The second scenario looked at a world where GHG emissions initially exhibited a downward trend to 2020. The third scenario looked at a world where GHG emissions decreased as new efficient technologies replaced GHG intensive processes. And finally, the last scenario looked at a world where GHG emissions were substantially reduced in all areas of the economy. The study clearly demonstrated that more work is needed to develop longer-term perspectives on the issue of climate change. In addition, there will be a need for long-term policy, program development and investment into science and technology. figs.

  9. The unexpected formation of Au{sup {delta}+}-Si{sup {delta}-} by the resonance neutralization of Ar{sup +} during the low energy bombardment of Au nanoparticles on c-Si

    Energy Technology Data Exchange (ETDEWEB)

    Yang Dequan [Regroupement Quebecois de Materiaux de Pointe, Departement de Genie Physique, Ecole Polytechnique, C.P. 6079, succursale Centre-Ville, Montreal, Quebec H3C 3A7 (Canada); Sacher, Edward, E-mail: edward.sacher@polymtl.ca [Regroupement Quebecois de Materiaux de Pointe, Departement de Genie Physique, Ecole Polytechnique, C.P. 6079, succursale Centre-Ville, Montreal, Quebec H3C 3A7 (Canada)

    2009-05-15

    Nanoscale Au layers, with irregular porosities, have been formed by the low energy Ar{sup +} bombardment of Au nanoparticles that were sputter-deposited onto native oxide-covered Si surfaces. High-resolution field emission scanning electron microcopy (FE-SEM) and X-ray photoelectron spectroscopy (XPS) have been used to characterize the formation and evolution of the nanoporous layer. Under Ar{sup +} bombardment, the Au nanoparticles that were initially deposited were observed to flatten and spread across the native oxide surface, without diffusing, finally coalescing at their edges to form a nanoporous film having irregular pore dimensions. XPS showed that this evolution was accompanied by the loss of Au as a result of sputtering. The formation of such porous films necessitates strong interfacial bonding to avoid the lateral diffusion of the Au nanoparticles, and their ultimate coalescence into larger nanoparticles. We demonstrated that Ar{sup +} beam bombardment invariably caused the formation of Au{sup {delta}+}-Si{sup {delta}-} bonding, rather than the expected Au{sup {delta}-}-Si{sup {delta}+} bonding, and we explain this to be due to the resonance neutralization of the Ar{sup +} beam on impacting the Au layer. We also reveal that the presumed formation of AuSi{sub x} is not quantifiable by XPS, due to the superposition of the chemical shift of the Au nanoparticles with that of the quantum size effect, during Au loss on sputtering.

  10. Canada | CRDI - Centre de recherches pour le développement ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Application à grande échelle de la production et de la distribution du sel doublement enrichi en Inde (FCRSAI, phase 2). Après avoir réalisé des travaux en laboratoire et dans le cadre de projets pilotes pendant une décennie au Canada et en Inde, on a mis à l'essai avec succès une préparation de sel doublement.

  11. Au36(SPh)23 nanomolecules.

    Science.gov (United States)

    Nimmala, Praneeth Reddy; Dass, Amala

    2011-06-22

    A new core size protected completely by an aromatic thiol, Au(36)(SPh)(23), is synthesized and characterized by MALDI-TOF mass spectrometry and UV-visible spectroscopy. The synthesis involving core size changes is studied by MS, and the complete ligand coverage by aromatic thiol group is shown by NMR.

  12. Canada-U.S. Relations

    Science.gov (United States)

    2010-09-03

    stopped, in traversing the two countries’ 5,500- mile border. About 70% of U.S.-Canada merchandise trade crosses the border by truck; many of these...concern about trade in pirated and counterfeit goods in Canada, as well as weak enforcement and relatively lax penalties...pirated and counterfeit goods by customs agents without a court order. The government introduced a new Copyright Modernization Act (C-32) in June 2010

  13. Canada and the green economy

    OpenAIRE

    Kuszewski, Judy; Crowther, Yasmin

    2012-01-01

    Canada has a complex relationship with the global efforts to move to a green economy. Its policymakers and business leaders need to balance the country’s vast natural resources and the economic growth that they can foster, with the need to develop in a low-carbon, resource-efficient and socially inclusive manner. This report explores what the green economy means to Canada, with a particular focus on Canadian companies and the accountancy profession. Publisher PDF

  14. Reformulating lead-based paint as a problem in Canada.

    Science.gov (United States)

    O'Grady, Kelly; Perron, Amélie

    2011-12-01

    Leaded gasoline was officially removed from the Canadian market in December 1990. The removal of a major lead source and the subsequent decline in children's blood lead levels marked an important transition point and sparked the emergence of new discourse on lead in Canada. Today, childhood lead poisoning is viewed as a problem of the past or a problem of the United States. Sparse Canadian surveillance data supported this view. Moreover, tensions among federal agencies evolved into a power struggle, with Health Canada ultimately becoming the dominant authority, thereby relegating important research initiatives to obscurity and also shaping a vastly weaker regulatory response to lead than occurred in the United States.

  15. Reformulating Lead-Based Paint as a Problem in Canada

    Science.gov (United States)

    Perron, Amélie

    2011-01-01

    Leaded gasoline was officially removed from the Canadian market in December 1990. The removal of a major lead source and the subsequent decline in children's blood lead levels marked an important transition point and sparked the emergence of new discourse on lead in Canada. Today, childhood lead poisoning is viewed as a problem of the past or a problem of the United States. Sparse Canadian surveillance data supported this view. Moreover, tensions among federal agencies evolved into a power struggle, with Health Canada ultimately becoming the dominant authority, thereby relegating important research initiatives to obscurity and also shaping a vastly weaker regulatory response to lead than occurred in the United States. PMID:21836119

  16. Report of the Auditor General of Canada to the House of Commons

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-04-01

    The 2005 report of the Auditor General of Canada includes 6 chapters entitled: (1) Natural Resources, governance and strategic management, (2) national security in Canada, the 2001 anti-terrorism initiative, air transportation security, marine security and emergency preparedness, (3) the passport office and passport services; (4) national defence, the C4ISR initiative in support of command and control, (5) rating selected departmental performance reports, and (6) Indian and Northern Affairs Canada, development of renewable resources in the Northwest Territories. The first chapter was catalogued separately for inclusion in this database. tabs., figs.

  17. Antiproton production in Au + Au collisions at 11.7 A{center_dot}GeV/c

    Energy Technology Data Exchange (ETDEWEB)

    Sako, Hiroyuki [Tokyo Univ. (Japan)

    1997-02-01

    We investigated the dependence of antiproton yields on the number of wounded projectile nucleons (N{sub proj}). The dN/dy/N{sub proj} of antiprotons with the beam energy correction is almost constant from p+A to Si+A collisions, while it decreases in Au+Au collisions to 30-60% of the constant. Next, we have compared dependence of ratios of dN/dy, p-bar/{pi}{sup -}, p/{pi}{sup -}, K{sup -}/{pi}{sup -}, K{sup +}/{pi}{sup -}, and {pi}{sup +}/{pi}{sup -} at 1.2Au+Au collisions. Only the ratio of p-bar/{pi}{sup -} decreases rapidly, while the ratios of p/{pi}{sup -}, K{sup +}/{pi}{sup -}, and K{sup -}/{pi}{sup -} increase, and {pi}{sup +}/{pi}{sup -} stays constant. These observations suggest that in the AGS energy regime, the absorption effect of antiprotons in Au+Au collisions is much stronger than in p+A and Si+A collisions. We have compared the antiproton data with the RQMD model. In RQMD, antiprotons are produced initially from multi-step excitation processes and some of them are absorbed by nucleons with free NN-bar annihilation cross sections. RQMD reproduces overall tendencies of antiproton yields from p+A to Au+Au collisions within 50%. Finally, we explored the relation between baryon densities and antiproton yields in A+A collisions. We used a model in a static participant volume with the RQMD initial production and the absorption length with the free NN-bar annihilation cross section. In the model, only the antiprotons produced around the surface of the participant volume can survive. The model reproduces the scaling of experimental antiproton yields with the 2/3 power of the number of participants. By comparing the model with the experimental data, it is found that the ratio of the mean baryon density to the surface baryon density is 3-4 independent of collision systems. (J.P.N.). 109 refs.

  18. Global polarization measurement in Au+Au collisions

    Energy Technology Data Exchange (ETDEWEB)

    Abelev, B.I.; Adams, J.; Aggarwal, M.M.; Ahammed, Z.; Amonett,J.; Anderson, B.D.; Anderson, M.; Arkhipkin, D.; Averichev, G.S.; Bai,Y.; Balewski, J.; Barannikova, O.; Barnby, L.S.; Baudot, J.; Bekele, S.; Belaga, V.V.; Bellingeri-Laurikainen, A.; Bellwied, R.; Benedosso, F.; Bhardwaj, S.; Bhasin, A.; Bhati, A.K.; Bichsel, H.; Bielcik, J.; Bielcikova, J.; Bland, L.C.; Blyth, S.-L.; Bonner, B.E.; Botje, M.; Bouchet, J.; Brandin, A.V.; Bravar, A.; Bystersky, M.; Cadman, R.V.; Cai,X.Z.; Caines, H.; Calderon de la Barca Sanchez, M.; Castillo, J.; Catu,O.; Cebra, D.; Chajecki, Z.; Chaloupka, P.; Chattopadhyay, S.; Chen,H.F.; Chen, J.H.; Cheng, J.; Cherney, M.; Chikanian, A.; Christie, W.; Coffin, J.P.; Cormier, T.M.; Cosentino, M.R.; Cramer, J.G.; Crawford,H.J.; Das, D.; Das, S.; Daugherity, M.; de Moura, M.M.; Dedovich, T.G.; DePhillips, M.; Derevschikov, A.A.; Didenko, L.; Dietel, T.; Djawotho,P.; Dogra, S.M.; Dong, W.J.; Dong, X.; Draper, J.E.; Du, F.; Dunin, V.B.; Dunlop, J.C.; Dutta Mazumdar, M.R.; Eckardt, V.; Edwards, W.R.; Efimov,L.G.; Emelianov, V.; Engelage, J.; Eppley, G.; Erazmus, B.; Estienne, M.; Fachini, P.; Fatemi, R.; Fedorisin, J.; Filimonov, K.; Filip, P.; Finch,E.; Fine, V.; Fisyak, Y.; Fu, J.; Gagliardi, C.A.; Gaillard, L.; Ganti,M.S.; Ghazikhanian, V.; Ghosh, P.; Gonzalez, J.S.; Gorbunov, Y.G.; Gos,H.; Grebenyuk, O.; Grosnick, D.; Guertin, S.M.; Guimaraes, K.S.F.F.; Guo,Y.; Gupta, N.; Gutierrez, T.D.; Haag, B.; Hallman, T.J.; Hamed, A.; Harris, J.W.; He, W.; Heinz, M.; Henry, T.W.; Hepplemann, S.; Hippolyte,B.; Hirsch, A.; Hjort, E.; Hoffman, A.M.; Hoffmann, G.W.; Horner, M.J.; Huang, H.Z.; Huang, S.L.; Hughes, E.W.; Humanic, T.J.; Igo, G.; Jacobs,P.; Jacobs, W.W.; Jakl, P.; Jia, F.; Jiang, H.; Jones, P.G.; Judd, E.G.; Kabana, S.; Kang, K.; Kapitan, J.; Kaplan, M.; Keane, D.; Kechechyan, A.; Khodyrev,V.Yu.; Kim, B.C.; Kiryluk, J.; Kisiel, A.; Kislov, E.M.; Klein,S.R.; Kocoloski, A.; Koetke, D.D.; et al.

    2007-08-02

    The system created in non-central relativisticnucleus-nucleus collisions possesses large orbital angular momentum. Dueto spin-orbit coupling, particles produced in such a system could becomeglobally polarized along the direction of the system angular momentum. Wepresent the results of Lambda and anti-Lambda hyperon global polarizationmeasurements in Au+Au collisions at sqrt sNN=62.4 GeV and 200 GeVperformed with the STAR detector at RHIC. The observed globalpolarization of Lambda and anti-Lambda hyperons in the STAR acceptance isconsistent with zero within the precision of the measurements. Theobtained upper limit, lbar P Lambda, anti-Lambda rbar<= 0.02, iscompared to the theoretical values discussed recently in theliterature.

  19. Caribbean immigrants in Britain and Canada: socio-economic adjustment.

    Science.gov (United States)

    Richmond, A H

    1988-12-01

    This paper compares the socioeconomic experiences of Caribbean immigration in Britain and Canada and shows how differing immigration trends together with changing economic circumstances influenced the process of integration. Caribbean immigrants in Canada are more recent arrivals than those in Britain and, in 1981, were still experiencing initial adjustment problems aggravated by an economy in which unemployment is still high. Unlike Britain, which has a large population born in that country of West Indian parentage, the "2nd generation" in Canada is small and mostly still in school. Despite higher levels of education and qualifications than their counterparts in Britain, Caribbean immigrants in Canada faced similar problems. Males were relatively more concentrated in manufacturing industries in Canada and in transportation in Britain, sectors which were undergoing significant structural change and experiencing high levels of unemployment. Earned income was below average in both countries but there were interesting gender differences. Caribbean women experienced the same "earnings gap", relative to men, that characterized most women in the labor force. However, Caribbean women were relatively more successful than men, as measured by unemployment rates and earned incomes. This appears to be due to their qualifications in nursing and other service occupations that continued to expand, and to be in demand in the 1970s and 1980s, when other occupations were declining in response to technological change and "post-industrial" developments. In both countries there were residual disadvantages, faced by Caribbean men and women, which cannot be statistically explained by factors such as age, education, period of immigration, or structural changes in the economy. These can be attributed, at least in part, to the institutionalized prejudice and discrimination against racial minorities which is prevalent in both societies. In absolute terms Caribbean immigrants in Canada are

  20. Syntheses, structure, and photoluminescence properties of the 1-dimensional chain compounds [(TPA)(2)Au][Au(CN)(2)] and (TPA)AuCl (TPA = 1,3,5-triaza-7-phosphaadamantane).

    Science.gov (United States)

    Assefa, Zerihun; Omary, Mohammad A; McBurnett, Brian G; Mohamed, Ahmed A; Patterson, Howard H; Staples, Richard J; Fackler, John P

    2002-12-02

    The structures and temperature-dependent photoluminescence properties of the one-dimensional compounds [(TPA)(2)Au][Au(CN)(2)], 1, and (TPA)AuCl, 2, are reported. An extended linear chain with weak Au.Au interactions along the c-axis is evident in the structure of 1, and a helical chain with a pitch of 3.271 A is seen for 2. The intrachain Au...Au separation is 3.457(1) and 3.396(2) A in 1 and 2, respectively. As a result of this weak Au...Au interaction, the physical properties of these compounds are anisotropic. Scanning electron microscopy (SEM) studies indicate that single crystals of both compounds are noninsulating. Single crystals of 1 do not luminesce visibly, but grinding the crystals finely initiates a strong green emission under UV irradiation at room temperature. Further interesting optical properties include the dependence of the emission profile of the powder on the exciting wavelength and luminescence thermochromism. When excited at wavelengths cryogenic temperatures leads to the dominance of the blue emission. Fibers of 2 are luminescent at 78 K with an emission band centered at 580 nm. Compound 1 crystallizes in the orthorhombic space group Cccm (No. 66), with Z = 2, a = 6.011(1) A, b = 23.877(6) A, c = 6.914(1) A, V = 992.3(3) A(3), and R = 0.0337. Compound 2 crystallizes in the trigonal space group R3 (No. 148), with Z = 18, a = 22.587(2) A, b = 22.587(2) A, c = 9.814(2) A, V = 4336 A(3), and R = 0.0283.

  1. d + Au hadron correlation measurements at PHENIX

    Energy Technology Data Exchange (ETDEWEB)

    Sickles, Anne M., E-mail: anne@bnl.gov

    2014-06-15

    In these proceedings, we discuss recent results from d + Au collisions in PHENIX ridge related measurements and their possible hydrodynamic origin. We present the v{sub 2} at midrapidity and measurements of the pseudorapidity dependence of the ridge, distinguishing between the d-going and Au-going directions. We investigate the possible geometrical origin by comparing v{sub 2} in d + Au to that in p + Pb, Au + Au and Pb + Pb collisions. Future plans to clarify the role of geometry in small collision systems at RHIC are discussed.

  2. Coexistence of multiple conformations in cysteamine monolayers on Au(111)

    DEFF Research Database (Denmark)

    Zhang, Jingdong; Bilic, A; Reimers, JR

    2005-01-01

    The structural organization, catalytic function, and electronic properties of cysteamine monolayers on Au(111) have been addressed comprehensively by voltammetry, in situ scanning tunneling microscopy (STM) in anaerobic environment, and a priori molecular dynamics (MD) simulation and STM image...... feature is indicative of two distinct cysteamine configurations. Cysteamine monolayer formation from initial nucleation to a highly ordered phase has been successfully observed in real time using oxygen-free in situ STM. Random cellular patterns, disordered adlayer formation accompanied by high step edge...

  3. Primary health care in Canada: systems in motion.

    Science.gov (United States)

    Hutchison, Brian; Levesque, Jean-Frederic; Strumpf, Erin; Coyle, Natalie

    2011-06-01

    During the 1980s and 1990s, innovations in the organization, funding, and delivery of primary health care in Canada were at the periphery of the system rather than at its core. In the early 2000s, a new policy environment emerged. This policy analysis examines primary health care reform efforts in Canada during the last decade, drawing on descriptive information from published and gray literature and from a series of semistructured interviews with informed observers of primary health care in Canada. Primary health care in Canada has entered a period of potentially transformative change. Key initiatives include support for interprofessional primary health care teams, group practices and networks, patient enrollment with a primary care provider, financial incentives and blended-payment schemes, development of primary health care governance mechanisms, expansion of the primary health care provider pool, implementation of electronic medical records, and quality improvement training and support. Canada's experience suggests that primary health care transformation can be achieved voluntarily in a pluralistic system of private health care delivery, given strong government and professional leadership working in concert. © 2011 Milbank Memorial Fund. Published by Wiley Periodicals Inc.

  4. Decay spectroscopy of $^{178}$Au

    CERN Document Server

    Whitmore, B

    In this thesis, the neutron-deficient nucleus $^{178}$Au is investigated through decay spectroscopy. Si and HPGe detectors were used to analyse the decay radiation of $^{178}$Au and its daughter nuclei. Previous studies have been unable to distinguish decay radiation from different isomeric states of this nucleus. This thesis represents the first time such isomeric discrimination has been achieved, and presents tentative spin assignments of both the ground state and an isomer. The neutron-deficient gold isotopes are an area of interest for the study of shape coexistence. This is the phenomenon exhibited by nuclei able to exist at a number of close lying energy minima, each reflecting a distinct type of deformation. It is hoped that studies such as this can help identify the evolution of nuclear deformation in this region of the nuclear chart.

  5. Le CRDI au Costa Rica

    International Development Research Centre (IDRC) Digital Library (Canada)

    La stabilité politique du Costa Rica a fait de ce pays un partenaire essen- tiel du CRDI en Amérique centrale pour la recherche portant sur l'agriculture, les politiques économiques, la démocratisation et la prévention des catastrophes naturelles. Le CRDI a beaucoup contribué à la recherche en agriculture au Costa Rica,.

  6. Cas de Cotonou au Benin

    African Journals Online (AJOL)

    Au nombre de ces nuisances, figurent entre autres, la perte de temps et par ricochet d'importantes recettes .... La méthodologie utilisée est basée sur deux types d'approches : l'approche théorique et celle empirique. Le premier volet de ...... Université de Bordeaux Talence, 456 pages. SEGBEDJI, E. (2001) : Impact du trafic ...

  7. L’apprentissage au CERN

    CERN Multimedia

    Staff Association

    2016-01-01

    En 1961, sur la base du constat que l’évolution du marché du travail nécessitait un besoin croissant de personnel qualifié, le 1er accord entre la République et canton de Genève et le CERN fut signé. Cet accord avait notamment pour objet la formation professionnelle de jeunes électroniciens et techniciens de laboratoires en physique. Le CERN, acteur local économique d’importance, soulignait par cet accord sa volonté de participer au développement économique et social local. Le 1er apprenti arriva au CERN en 1965. En 1971, le centre d’apprentissage fut créé ; il accueille aujourd’hui plus d’une vingtaine d’apprentis au total, à raison d’environ six nouveaux apprentis chaque année. Cet apprentissage est dédié aux jeunes âgés e...

  8. Fabricating a Homogeneously Alloyed AuAg Shell on Au Nanorods to Achieve Strong, Stable, and Tunable Surface Plasmon Resonances

    KAUST Repository

    Huang, Jianfeng

    2015-08-13

    Colloidal metal nanocrystals with strong, stable, and tunable localized surface plasmon resonances (SPRs) can be useful in a corrosive environment for many applications including field-enhanced spectroscopies, plasmon-mediated catalysis, etc. Here, a new synthetic strategy is reported that enables the epitaxial growth of a homogeneously alloyed AuAg shell on Au nanorod seeds, circumventing the phase segregation of Au and Ag encountered in conventional synthesis. The resulting core–shell structured bimetallic nanorods (AuNR@AuAg) have well-mixed Au and Ag atoms in their shell without discernible domains. This degree of mixing allows AuNR@AuAg to combine the high stability of Au with the superior plasmonic activity of Ag, thus outperforming seemingly similar nanostructures with monometallic shells (e.g., Ag-coated Au NRs (AuNR@Ag) and Au-coated Au NRs (AuNR@Au)). AuNR@AuAg is comparable to AuNR@Ag in plasmonic activity, but that it is markedly more stable toward oxidative treatment. Specifically, AuNR@AuAg and AuNR@Ag exhibit similarly strong signals in surface-enhanced Raman spectroscopy that are some 30-fold higher than that of AuNR@Au. When incubated with a H2O2 solution (0.5 m), the plasmonic activity of AuNR@Ag immediately and severely decayed, whereas AuNR@AuAg retained its activity intact. Moreover, the longitudinal SPR frequency of AuNR@AuAg can be tuned throughout the red wavelengths (≈620–690 nm) by controlling the thickness of the AuAg alloy shell. The synthetic strategy is versatile to fabricate AuAg alloyed shells on different shaped Au, with prospects for new possibilities in the synthesis and application of plasmonic nanocrystals.

  9. Canadian initiative leading the way for equitable health systems and ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    2016-04-27

    Apr 27, 2016 ... Reflecting Canada's sustained commitment to improving maternal and child health, IDRC in partnership with Global Affairs Canada and the Canadian Institutes of Health Research launched a new $36 ... Read more on the results of the Africa Health Systems Initiative in the following journal supplements:.

  10. Canada Committee on Natural Resources Annual Report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-04-26

    The Canada Committee for Natural Resources (CCNR) met on 2 occasions during the reporting period. The first was to discuss recommendations regarding Canada's National Strategy for Agri-Food Research and Technology Transfer 1997-2002. This involved the development and application of a database on existing programs covering the sustainable use of natural resources. Another growing concern for Canadians, the impact of agricultural inputs on water quality, was also discussed. The second meeting focused on the issue of greenhouse gases and carbon sequestration and the progress in the Climate Change Funding Initiative in Agriculture program. This report includes a status report on soil resources, water resources and air quality. It includes sections on the activities of the CCNR and issues of national interest regarding agriculture research. Priorities for agriculture research include greenhouse gas mitigation, sinks and sources. The report referred to: (1) the impact of mitigation on nutrient cycle, (2) full-life cycle consideration in food and fiber production, (3) the use of classical and eco-technologies, (4) applications for whole farm systems and associated watersheds, and (5) the importance for landscape ecology. Research into processes and fluxes include studies of key soil processes and components, the effects of global change on processes and fluxes of greenhouse gases, and plant pests. Research into assessment methods include national accounting and verification, ecological models, measurement techniques, and monitoring carbon sources and sinks. The socio-economic considerations and adoptions examine impacts and adaptation, and economic analysis. 1 tab.

  11. Systematic studies of the centrality dependence of soft photon production in Au+Au collision with PHENIX

    CERN Document Server

    Bannier, Benjamin

    2014-01-01

    Since the earliest days of Heavy Ion Physics thermal soft photon radiation emitted during the reaction had been theorized as a smoking gun signal for formation of a quark-gluon plasma and as a tool to characterize its properties. In recent years the existence of excess photon radiation in heavy ion collisions over the expectation from initial hard interactions has been confirmed at both RHIC and LHC energies by PHENIX and ALICE respectively. There the radiation has been found to exhibit elliptic flow $v_2$ well above what can currently be reconciled with a picture of early emission from a plasma phase. During the 2007 and 2010 Au+Au runs PHENIX has measured a high purity sample of soft photons down to $p_T>0.4\\,\\text{GeV}/c$ using an external conversion method. We present recent systematic studies by PHENIX from that sample on the centrality dependence of the soft photon yield, and elliptic and triangular flow $v_2$ and $v_3$ in Au+Au collisions which fill in the experimental picture and enable discrimination...

  12. Transport characteristics in Au/pentacene/Au diodes

    Science.gov (United States)

    Hayashi, Toshiaki; Naka, Akiyoshi; Hiroki, Masanobu; Yokota, Tomoyuki; Someya, Takao; Fujiwara, Akira

    2018-03-01

    We have used scanning and transmission electron microscopes (SEM and TEM) to study the structure of a pentacene thin film grown on a Au layer with and shown that it consists of randomly oriented amorphous pentacene clusters. We have also investigated the transport properties of amorphous pentacene in a metal–semiconductor–metal (MSM) diode structure and shown that the current is logarithmically proportional to the square root of the applied voltage, which indicates that transport occurs as the result of hopping between localized sites randomly distributed in space and energy.

  13. Acces au traitement anticancereux au Togo (access to treatment of ...

    African Journals Online (AJOL)

    Contexte : Au Togo, l'incidence et la mortalité des cancers ne cessent de croître en raison du diagnostic et de la prise en charge tardifs. D'autres raisons telles que l'absence d'oncologue spécialiste et la faible accessibilité aux médicaments anticancéreux sont de plus en plus évoquées. L'objectif de cette étude était de ...

  14. Canada Among Nations 2013, Canada-Africa Relations : Looking ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    expansion la plus rapide dans le monde et un virage vers une bonne ... Le CRDI, l'Israel Science Foundation, la Fondation Azrieli et les Instituts de recherche en santé du Canada annoncent l'appel de propositions pour la ...

  15. Amélioration de la gestion des plaines inondables au moyen de ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le gouvernement du Bangladesh finance un certain nombre d'initiatives visant à décentraliser la gestion ressources halieutiques et hydriques, majoritairement grâce au soutien de bailleurs de fonds externes. On craint pour la survie de ces initiatives, qui regroupent plus de 200 organismes communautaires, une fois que le ...

  16. Cross-sectional characterization of the dewetting of a Au/Ni bilayer film

    Energy Technology Data Exchange (ETDEWEB)

    Cen, Xi; Thron, Andrew M.; Zhang, Xinming; Benthem, Klaus van

    2017-07-15

    The solid state dewetting of Au/Ni bilayer films was investigated by cross-sectional transmission electron microscopy techniques, including energy-dispersive X-ray spectroscopy, electron energy-loss spectroscopy and precession electron diffraction. After annealing under high vacuum conditions the early stage of film agglomeration revealed significant changes in film morphology and chemical distribution. Both Au and Ni showed texturing. Despite the initial deposition sequence of the as-deposited Au/Ni/SiO{sub 2}/Si interface structure, the majority of the metal/SiO{sub 2} interface was Au/SiO{sub 2} after annealing at 675 °C for 1 h. Void nucleation was predominantly observed at Au/Ni/SiO{sub 2} triple junctions, rather than grain boundary grooving at free surface of the metal film. Detailed cross-sectional characterization reveals that the Au/Ni interface in addition to small amounts of metal alloying strongly affects film break-up and agglomeration kinetics. The formation of Au/SiO{sub 2} interface sections is found to be energetically preferred over Ni/SiO{sub 2} due to compressive stress in the as-deposited Ni layer. Void nucleation is observed at the film/substrate interface, while the formation of voids at Ni/Au phase boundaries inside the metal film is caused by the Kirkendall effect. - Highlights: • The dewetting of Au/Ni bilayer films was studied by cross-sectional TEM techniques. • The majority of the metal/SiO{sub 2} interface was comprised of Au/SiO{sub 2} after annealing. • Void formation was dominant for hole nucleation at early dewetting stage. • The Kirkendall effect was also observed to cause the formation of voids.

  17. Un projet écosanté au Pérou fait parler de lui à la radio | CRDI ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    25 janv. 2013 ... L'Année internationale de la coopération dans le domaine de l'eau vient de commencer. Pour souligner l'occasion, Chantal Srivastava, de l'émission Les années lumière, diffusée à la radio de Radio‑Canada, s'entretient avec des administrateurs de programme du CRDI au sujet de travaux de recherche ...

  18. Radars routiers, étranges retombées technologiques de la recherche au CERN... - French version only

    CERN Multimedia

    Association du personnel

    2007-01-01

    Les lecteurs de la presse locale, les « cernois » en particulier, ont apprécié très modérément les titres des journaux locaux de la semaine dernière, relayés par les informations sur les radios publiques francophones en Suisse, France, Belgique et même… au Canada : « Des radars sur les routes du CERN !... »

  19. Profiling hot and dense nuclear medium with high transverse momentum hadrons produced in d+Au and Au+Au collisions by the PHENIX experiment at RHIC

    Directory of Open Access Journals (Sweden)

    Sakaguchi Takao

    2014-03-01

    Full Text Available PHENIX measurements of high transverse momentum (pT identified hadrons in d+Au and Au+Au collisions are presented. The nuclear modification factors (RdA and RAA for π0 and ƞ are found to be very consistent in both collision systems, respectively. Using large amount of p + p and Au+Au datasets, the fractional momentum loss (Sloss and the path-length dependent yield of π0 in Au+Au collisions are obtained. The hadron spectra in the most central d+Au and the most peripheral Au+Au collisions are studied. The spectra shapes are found to be similar in both systems, but the yield is suppressed in the most peripheral Au+Au collisions.

  20. Survey of recreational fishing in Canada, 2005

    National Research Council Canada - National Science Library

    2007-01-01

    The 2005 Survey of Recreational Fishing in Canada collected information about recreational fishing activities to assess the economic and social importance of recreational fisheries to Canada's provinces and territories...

  1. A National Palliative Care Strategy for Canada

    OpenAIRE

    Morrison, R. Sean

    2017-01-01

    Objective: To identify barrier to achieving universal access to high quality palliative care in Canada, review published national strategies and frameworks to promote palliative care, examine key aspects that have been linked to successful outcomes, and make recommendations for Canada.

  2. Azimuthal Anisotropy in U+U and Au+Au Collisions at RHIC.

    Science.gov (United States)

    Adamczyk, L; Adkins, J K; Agakishiev, G; Aggarwal, M M; Ahammed, Z; Alekseev, I; Alford, J; Aparin, A; Arkhipkin, D; Aschenauer, E C; Averichev, G S; Banerjee, A; Bellwied, R; Bhasin, A; Bhati, A K; Bhattarai, P; Bielcik, J; Bielcikova, J; Bland, L C; Bordyuzhin, I G; Bouchet, J; Brandin, A V; Bunzarov, I; Burton, T P; Butterworth, J; Caines, H; Calderón de la Barca Sánchez, M; Campbell, J M; Cebra, D; Cervantes, M C; Chakaberia, I; Chaloupka, P; Chang, Z; Chattopadhyay, S; Chen, J H; Chen, X; Cheng, J; Cherney, M; Christie, W; Contin, G; Crawford, H J; Das, S; De Silva, L C; Debbe, R R; Dedovich, T G; Deng, J; Derevschikov, A A; di Ruzza, B; Didenko, L; Dilks, C; Dong, X; Drachenberg, J L; Draper, J E; Du, C M; Dunkelberger, L E; Dunlop, J C; Efimov, L G; Engelage, J; Eppley, G; Esha, R; Evdokimov, O; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Fedorisin, J; Feng, Z; Filip, P; Fisyak, Y; Flores, C E; Fulek, L; Gagliardi, C A; Garand, D; Geurts, F; Gibson, A; Girard, M; Greiner, L; Grosnick, D; Gunarathne, D S; Guo, Y; Gupta, S; Gupta, A; Guryn, W; Hamad, A; Hamed, A; Haque, R; Harris, J W; He, L; Heppelmann, S; Heppelmann, S; Hirsch, A; Hoffmann, G W; Hofman, D J; Horvat, S; Huang, H Z; Huang, B; Huang, X; Huck, P; Humanic, T J; Igo, G; Jacobs, W W; Jang, H; Jiang, K; Judd, E G; Kabana, S; Kalinkin, D; Kang, K; Kauder, K; Ke, H W; Keane, D; Kechechyan, A; Khan, Z H; Kikola, D P; Kisel, I; Kisiel, A; Koetke, D D; Kollegger, T; Kosarzewski, L K; Kotchenda, L; Kraishan, A F; Kravtsov, P; Krueger, K; Kulakov, I; Kumar, L; Kycia, R A; Lamont, M A C; Landgraf, J M; Landry, K D; Lauret, J; Lebedev, A; Lednicky, R; Lee, J H; Li, W; Li, Y; Li, C; Li, Z M; Li, X; Li, X; Lisa, M A; Liu, F; Ljubicic, T; Llope, W J; Lomnitz, M; Longacre, R S; Luo, X; Ma, L; Ma, R; Ma, Y G; Ma, G L; Magdy, N; Majka, R; Manion, A; Margetis, S; Markert, C; Masui, H; Matis, H S; McDonald, D; Meehan, K; Minaev, N G; Mioduszewski, S; Mohanty, B; Mondal, M M; Morozov, D A; Mustafa, M K; Nandi, B K; Nasim, Md; Nayak, T K; Nigmatkulov, G; Nogach, L V; Noh, S Y; Novak, J; Nurushev, S B; Odyniec, G; Ogawa, A; Oh, K; Okorokov, V; Olvitt, D L; Page, B S; Pak, R; Pan, Y X; Pandit, Y; Panebratsev, Y; Pawlik, B; Pei, H; Perkins, C; Peterson, A; Pile, P; Planinic, M; Pluta, J; Poljak, N; Poniatowska, K; Porter, J; Posik, M; Poskanzer, A M; Pruthi, N K; Putschke, J; Qiu, H; Quintero, A; Ramachandran, S; Raniwala, S; Raniwala, R; Ray, R L; Ritter, H G; Roberts, J B; Rogachevskiy, O V; Romero, J L; Roy, A; Ruan, L; Rusnak, J; Rusnakova, O; Sahoo, N R; Sahu, P K; Sakrejda, I; Salur, S; Sandweiss, J; Sarkar, A; Schambach, J; Scharenberg, R P; Schmah, A M; Schmidke, W B; Schmitz, N; Seger, J; Seyboth, P; Shah, N; Shahaliev, E; Shanmuganathan, P V; Shao, M; Sharma, B; Sharma, M K; Shen, W Q; Shi, S S; Shou, Q Y; Sichtermann, E P; Sikora, R; Simko, M; Skoby, M J; Smirnov, D; Smirnov, N; Song, L; Sorensen, P; Spinka, H M; Srivastava, B; Stanislaus, T D S; Stepanov, M; Stock, R; Strikhanov, M; Stringfellow, B; Sumbera, M; Summa, B J; Sun, X; Sun, X M; Sun, Z; Sun, Y; Surrow, B; Svirida, D N; Szelezniak, M A; Tang, Z; Tang, A H; Tarnowsky, T; Tawfik, A N; Thomas, J H; Timmins, A R; Tlusty, D; Tokarev, M; Trentalange, S; Tribble, R E; Tribedy, P; Tripathy, S K; Trzeciak, B A; Tsai, O D; Ullrich, T; Underwood, D G; Upsal, I; Van Buren, G; van Nieuwenhuizen, G; Vandenbroucke, M; Varma, R; Vasiliev, A N; Vertesi, R; Videbaek, F; Viyogi, Y P; Vokal, S; Voloshin, S A; Vossen, A; Wang, F; Wang, Y; Wang, H; Wang, J S; Wang, Y; Wang, G; Webb, G; Webb, J C; Wen, L; Westfall, G D; Wieman, H; Wissink, S W; Witt, R; Wu, Y F; Xiao, Z; Xie, W; Xin, K; Xu, Y F; Xu, N; Xu, Z; Xu, Q H; Xu, H; Yang, Y; Yang, Y; Yang, C; Yang, S; Yang, Q; Ye, Z; Yepes, P; Yi, L; Yip, K; Yoo, I-K; Yu, N; Zbroszczyk, H; Zha, W; Zhang, X P; Zhang, J B; Zhang, J; Zhang, Z; Zhang, S; Zhang, Y; Zhang, J L; Zhao, F; Zhao, J; Zhong, C; Zhou, L; Zhu, X; Zoulkarneeva, Y; Zyzak, M

    2015-11-27

    Collisions between prolate uranium nuclei are used to study how particle production and azimuthal anisotropies depend on initial geometry in heavy-ion collisions. We report the two- and four-particle cumulants, v_{2}{2} and v_{2}{4}, for charged hadrons from U+U collisions at sqrt[s_{NN}]=193  GeV and Au+Au collisions at sqrt[s_{NN}]=200  GeV. Nearly fully overlapping collisions are selected based on the energy deposited by spectators in zero degree calorimeters (ZDCs). Within this sample, the observed dependence of v_{2}{2} on multiplicity demonstrates that ZDC information combined with multiplicity can preferentially select different overlap configurations in U+U collisions. We also show that v_{2} vs multiplicity can be better described by models, such as gluon saturation or quark participant models, that eliminate the dependence of the multiplicity on the number of binary nucleon-nucleon collisions.

  3. Measurement of Direct Photons in Ultra-Relativistic Au+Au Collisions

    Science.gov (United States)

    Gong, Haijiang

    Direct photons provide a tool to study the different stages of a heavy ion collision, especially the formation of the quark-gluon-plasma (QGP), without being influenced by the strong reaction and hadronization processes. The yield of direct photons can be determined from the inclusive photon yield and the photon yield from hadronic decays. At low pT, where a significant fraction of direct photon is expected to come from the thermalized medium of deconfined quarks and gluons and interacting hadrons, the measurement is very challenging. These so-called thermal photons carry information about the initial temperature of the medium. We present a new analysis technique that was developed to improve direct photon production measurement in the low and medium pT range. The technique was applied to the PHENIX Run4 Au+Au sqrt(sNN)=200GeV/c collisions dataset. It uses strict particle identification (PID) in the Electromagnetic Calorimeter (EMCal) and a charged particle veto to extract a clean photon signal. These photons are then tagged with EMCal photon candidates with loose PID cuts, which can be reconstructed with high efficiency, to determine the fraction of photons originating from neutral pion decays. Most systematic uncertainties and detector effects cancel in this method. The results are compared with recent PHENIX direct photon measurement through external conversion method and theoretical calculation predicting thermal photon production.

  4. Au38(SPh)24: Au38 Protected with Aromatic Thiolate Ligands.

    Science.gov (United States)

    Rambukwella, Milan; Burrage, Shayna; Neubrander, Marie; Baseggio, Oscar; Aprà, Edoardo; Stener, Mauro; Fortunelli, Alessandro; Dass, Amala

    2017-04-06

    Au38(SR)24 is one of the most extensively investigated gold nanomolecules along with Au25(SR)18 and Au144(SR)60. However, so far it has only been prepared using aliphatic-like ligands, where R = -SC6H13, -SC12H25 and -SCH2CH2Ph. Au38(SCH2CH2Ph)24 when reacted with HSPh undergoes core-size conversion to Au36(SPh)24, and existing literature suggests that Au38(SPh)24 cannot be synthesized. Here, contrary to prevailing knowledge, we demonstrate that Au38(SPh)24 can be prepared if the ligand exchanged conditions are optimized, under delicate conditions, without any formation of Au36(SPh)24. Conclusive evidence is presented in the form of matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS), electrospray ionization mass spectra (ESI-MS) characterization, and optical spectra of Au38(SPh)24 in a solid glass form showing distinct differences from that of Au38(S-aliphatic)24. Theoretical analysis confirms experimental assignment of the optical spectrum and shows that the stability of Au38(SPh)24 is not negligible with respect to that of its aliphatic analogous, and contains a significant component of ligand-ligand attractive interactions. Thus, while Au38(SPh)24 is stable at RT, it converts to Au36(SPh)24 either on prolonged etching (longer than 2 hours) at RT or when etched at 80 °C.

  5. Building better health care leadership for Canada: implementing evidence

    National Research Council Canada - National Science Library

    Denis, Jean-Louis; Sullivan, Terrence James

    2011-01-01

    ... of the Government of Canada through the Canada Book Fund for our publishing activities. Library and Archives Canada Cataloguing in Publication Building better health care leadership for Canada: imple...

  6. Teaching Inquiry in Nigeria and Canada

    Science.gov (United States)

    Strubbe, Linda

    2015-08-01

    Inquiry is a teaching strategy in which student work mirrors authentic scientific research: students have ownership over their learning path, and learning scientific concepts (e.g., properties of light, motion in a gravitational field) is intertwined with learning scientific practices (e.g., asking questions, planning an investigation, constructing explanations). I will describe inquiry and education research showing its effectiveness; and I will present inquiry-based astronomy curricula and assessment strategies we have designed for undergraduate and graduate courses in Nigeria and Canada: an activity on the cosmic distance ladder (part of a short course in Abuja); a course on order-of-magnitude astronomy problem solving (Toronto); and new education research from the Carl Wieman Science Education Initiative at the University of British Columbia (where I am a new postdoc).

  7. canada's “thousand talent program”i: how canada research chair ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    2013-10-24

    Oct 24, 2013 ... richer explanation of brain circulation, using the case study of Chinese holders of Canada Research Chairs. (CRC). Canada suffered brain drain in the 1990s, in particular to the United States. The Canada. Research Chair Program (CRCP), launched in 2000 by the Government of Canada, signalled the ...

  8. Comparing pyloromyotomy outcomes across Canada.

    Science.gov (United States)

    Ednie, Alexander C; Amram, Ofer; Schuurman, Nadine; Yanchar, Natalie L

    2017-05-01

    Changing patterns of referral and management of hypertrophic pyloric stenosis (HPS) in North America have recently been described. Comfort with perioperative management, anesthesia, and corrective surgery have been cited as reasons for these changes. Our primary objective was to assess pyloromyotomy outcomes between different hospital types across Canada. The secondary objective was to geospatially map all pyloromyotomies to identify regions of higher HPS incidence across Canada. Data of all pyloromyotomies done between 2011 and 2013 were acquired from Canadian Institute for Health Information (CIHI). Complication rates and length of hospital stay (LOS) were analyzed. Postal codes for each patient were used to geospatially map regions of higher HPS incidence. A total of 1261 pyloromyotomies were assessed. There was no difference in LOS or complication rates between different hospital types or surgeon group. Open pyloromyotomies were done in 75% of the cases. Several regions of higher HPS incidence were identified across Canada. This study found no difference in complication rate or LOS stay between hospital type and surgeon type across Canada. This may reflect a previously identified referral trend in the United States towards pediatric centers. Several regions of higher HPS incidence were identified, and may aid in identifying genetic elements causing HPS. 2c. Crown Copyright © 2017. Published by Elsevier Inc. All rights reserved.

  9. Computerized Library Networking in Canada.

    Science.gov (United States)

    Duchesne, Roderick M.; Islam, Mazharul

    1979-01-01

    Reviews a study which examined computerized bibliographic centers in Canada identifying three types: (1) library processing facility; (2) library network user group; and (3) information retrieval facility. The study also reported on ways to promote a computerized library network with emphasis on national location service. (CWM)

  10. Compute Canada: Advancing Computational Research

    Science.gov (United States)

    Baldwin, Susan

    2012-02-01

    High Performance Computing (HPC) is redefining the way that research is done. Compute Canada's HPC infrastructure provides a national platform that enables Canadian researchers to compete on an international scale, attracts top talent to Canadian universities and broadens the scope of research.

  11. Unique Measles Virus in Canada

    Centers for Disease Control (CDC) Podcasts

    2017-08-24

    Dr. Shelley Deeks, chief of communicable diseases at Public Health Ontario, discusses a measles outbreak in Canada.  Created: 8/24/2017 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID).   Date Released: 8/24/2017.

  12. Genre et migration au Maroc

    OpenAIRE

    KHACHANI, Mohamed

    2011-01-01

    Euro-Mediterranean Consortium for Applied Research on International Migration (CARIM) Une des principales caractéristiques récentes de la migration marocaine est sa tendance à une féminisation soutenue. Le projet migratoire - qui était un projet d’hommes - intéresse de plus en plus les femmes marocaines au point de constituer actuellement près de la moitié de l’effectif migratoire marocain. Cette reconnaissance de l'importance des femmes dans la construction de l'espace migratoire a placé ...

  13. Genre et migration au Liban

    OpenAIRE

    JOUNI, Hassan

    2011-01-01

    Euro-Mediterranean Consortium for Applied Research on International Migration (CARIM) La femme possède un statut bien avancé au sein de la société libanaise : la Constitution libanaise proclame l’égalité entre les citoyens. Quelques lois et pratiques restent, toutefois, discriminatoires à l’égard de la femme, notamment la loi sur la nationalité et la loi sur le statut personnel. Une discrimination sociale très grave existe en ce qui concerne les femmes travaillant à domicile; elles subi...

  14. Nuclear Data Sheets for 181Au

    Science.gov (United States)

    Baglin, Coral M.

    1999-06-01

    Nuclear structure data pertaining to 181Au have been compiled and evaluated, and incorporated into the ENSDF data file. This evaluation of 181Au supersedes the previous publication (R. B. Firestone, Nuclear Data Sheets 62, 101 (1991) (literature cutoff date October 1990)), and includes literature available by 2 July 1999. The newly incorporated references are: 1999Mu05, 1999So01, 1995Au04, 1995Bi01, 1991Ry01, 1979Ha10, 1970Ha18.

  15. Nuclear data sheets for 181Au

    Energy Technology Data Exchange (ETDEWEB)

    Baglin, Coral M.

    1999-07-02

    Nuclear structure data pertaining to 181Au have been compiled and evaluated, and incorporated into the ENSDF data file. This evaluation of 181Au supersedes the previous publication (R. B. Firestone, Nuclear Data Sheets 62, 101 (1991) (literature cutoff date October 1990)), and includes literature available by 2 July 1999. The newly incorporated references are: 1999Mu05, 1999So01, 1995Au04, 1995Bi01, 1991Ry01, 1979Ha10, 1970Ha18.

  16. Predicted Habitat Suitability for Montipora Corals in the Au'au Channel Region

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This raster denotes predicted habitat suitability for Montipora in the Au'au Channel region. Maximum Entropy (MaxEnt) modeling software was used to create this...

  17. Predicted Habitat Suitability for Porites in the Au'au Channel Region

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This raster denotes predicted habitat suitability for Porites in the Au'au Channel region. Maximum Entropy (MaxEnt) modeling software was used to create this...

  18. Predicted Habitat Suitability for Porites Corals in the Au'au Channel Region

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This raster denotes predicted habitat suitability for Porites in the Au'au Channel region. Maximum Entropy (MaxEnt) modeling software was used to create this...

  19. Predicted Habitat Suitability for Leptoseris Corals in the Au'au Channel Region

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This raster denotes predicted habitat suitability for Leptoseris in the Au'au Channel region. Maximum Entropy (MaxEnt) modeling software was used to create this...

  20. Predicted Habitat Suitability for All Mesophotic Corals in the Au'au Channel Region

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This raster denotes predicted habitat suitability for all mesophotic corals in the Au'au Channel region. Maximum Entropy (MaxEnt) modeling software was used to...

  1. Predicted Habitat Suitability for Leptoseris in the Au'au Channel Region

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This raster denotes predicted habitat suitability for Leptoseris in the Au'au Channel region. Maximum Entropy (MaxEnt) modeling software was used to create this...

  2. Predicted Habitat Suitability for All Mesophotic Corals in the Au'au Channel Region

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This dataset is located between the islands of Maui, Lanai, Molokai and Kahoolawe, and includes the Au'au Channel as well as parts of the Kealaikahiki, Alalakeiki...

  3. Electrochemical formation and characterization of Au nanostructures on a highly ordered pyrolytic graphite surface

    Energy Technology Data Exchange (ETDEWEB)

    Arroyo Gómez, José J. [Instituto de Ingeniería Electroquímica y Corrosión (INIEC ), Departamento de Ingeniería Química, Universidad Nacional del Sur, Avda. Alem 1253, 8000 Bahía Blanca (Argentina); Zubieta, Carolina; Ferullo, Ricardo M. [INQUISUR , Departamento de Química, Universidad Nacional del Sur, Avda. Alem 1253, 8000 Bahía Blanca (Argentina); García, Silvana G., E-mail: sgarcia@criba.edu.ar [Instituto de Ingeniería Electroquímica y Corrosión (INIEC ), Departamento de Ingeniería Química, Universidad Nacional del Sur, Avda. Alem 1253, 8000 Bahía Blanca (Argentina)

    2016-02-15

    Graphical abstract: - Highlights: • The electrodeposition of Au on HOPG tends to follow the response predicted for a 3D instantaneous nucleation mechanism in the potential range considered. • By choosing suitable nucleation and growth pulses, one-dimensional deposits were possible, preferentially located on step edges of the HOPG substrate. • Quantum-mechanical calculations confirmed the tendency of Au atoms to join selectively on the HOPG step edges, at the early stages of Au electrodeposition. - Abstract: The electrochemical formation of Au nanoparticles on a highly ordered pyrolytic graphite (HOPG) substrate using conventional electrochemical techniques and ex-situ AFM is reported. From the potentiostatic current transients studies, the Au electrodeposition process on HOPG surfaces was described, within the potential range considered, by a model involving instantaneous nucleation and diffusion controlled 3D growth, which was corroborated by the microscopic analysis. Initially, three-dimensional (3D) hemispherical nanoparticles distributed on surface defects (step edges) of the substrate were observed, with increasing particle size at more negative potentials. The double potential pulse technique allowed the formation of rounded deposits at low deposition potentials, which tend to form lines of nuclei aligned in defined directions leading to 3D ordered structures. By choosing suitable nucleation and growth pulses, one-dimensional (1D) deposits were possible, preferentially located on step edges of the HOPG substrate. Quantum-mechanical calculations confirmed the tendency of Au atoms to join selectively on surface defects, such as the HOPG step edges, at the early stages of Au electrodeposition.

  4. Effects of monolayer Bi on the self-assembly of DBBA on Au(111)

    Science.gov (United States)

    Tian, Guo; Shen, Yixian; He, Bingchen; Yu, Zhengqing; Song, Fei; Lu, Yunhao; Wang, Pingshan; Gao, Yongli; Huang, Han

    2017-11-01

    The initial growth behaviors of nonplanar 10,10‧-dibromo-9,9‧-bianthryl (DBBA) molecules on the Au(111) substrates, which is either pristine or Bi-3 × √3-Au(111), at low deposition rates have been systematically investigated using low temperature scanning tunneling microscopy (LT-STM) and density functional theories (DFT) calculations. The effects of such substrates on the subsequent graphene nanoribbons (GNRs) formation are addressed. On clean Au(111), DBBA molecules self-assemble into highly ordered commensurate single-molecule chains along 11 2 bar >Au at a coverage of 0.8 monolayer (ML), and collectively transit into long-range ordered commensurate double-molecule chains along 1 1 bar 0 >Au but with many single-molecule vacancies at a coverage of 1.2 ML, revealing the delicate competing between intermolecular interactions and molecule-substrate interfacial interactions. The interfacial interactions are further tuned by introducing bismuth to form a Bi-3 × √3-Au(111)surface, where DBBA molecules self-assemble into an unique hexamer phase due to the enhanced intermolecular interactions via Csbnd H…π and halogen bonds. DFT calculations confirm the proposed molecular configuration change of single DBBA molecule when adsorbed on different substrates. The calculated difference in Csbnd Br bond gives further insight into why no GNRs formed on Bi-3 × √3-Au(111).

  5. IMMIGRATION AND DISABILITY IN THE UNITED STATES AND CANADA

    Directory of Open Access Journals (Sweden)

    Mark C. Weber

    2015-10-01

    entre les aptitudes physiques et mentales d’une personne et les obstacles physiques et comportementaux du milieu. L’application de cette perception du handicap au droit canadien et américain de l’immigration met en relief les obstacles à l’entrée et à l’obtention éventuelle de la citoyenneté pour les personnes handicapées. Dans le passé, le droit nord-américain a exclu de nombreuses catégories d’immigrants, notamment les personnes ayant une déficience physique ou intellectuelle ou une maladie mentale et les personnes affligées d’une condition pouvant mener à la dépendance. Bien que des exclusions soient encore en vigueur au Canada et aux États-Unis dans le cas des personnes qui risquent d’entraîner un fardeau excessif pour le secteur public et des personnes souffrant d’une maladie transmissible, au cours des dernières années, les États-Unis ont autorisé des immigrants sans papier gravement handicapés qui étaient déjà au pays à légaliser leur situation; de plus, les deux pays ont aboli la plupart des exclusions relatives aux immigrants souffrant de certaines affections incapacitantes. Les exigences américaines en matière de naturalisation ont également été assouplies.      Cependant, de nombreuses difficultés subsistent. En droit américain, les autorités conservent un large pouvoir discrétionnaire en ce qui concerne l’exclusion des personnes susceptibles de représenter un fardeau pour le secteur public, car ce sont les agents consulaires en poste à l’étranger qui déterminent unilatéralement s’il y a lieu de délivrer ou non les visas d’immigrant. De plus, les comportements liés à une incapacité mentale, y compris les délits mineurs, peuvent entraîner le renvoi des États-Unis et les personnes souffrant d’une incapacité mentale ne disposent que de moyens de protection modestes dans les procédures de renvoi. Au Canada, les familles ayant des enfants handicapés sont exclues, en raison du fardeau

  6. Medium modification of jet fragmentation in Au+Au collisions at √[s(NN)]=200 GeV measured in direct photon-hadron correlations.

    Science.gov (United States)

    Adare, A; Afanasiev, S; Aidala, C; Ajitanand, N N; Akiba, Y; Akimoto, R; Al-Bataineh, H; Al-Ta'ani, H; Alexander, J; Angerami, A; Aoki, K; Apadula, N; Aphecetche, L; Aramaki, Y; Armendariz, R; Aronson, S H; Asai, J; Asano, H; Aschenauer, E C; Atomssa, E T; Averbeck, R; Awes, T C; Azmoun, B; Babintsev, V; Bai, M; Baksay, G; Baksay, L; Baldisseri, A; Bannier, B; Barish, K N; Barnes, P D; Bassalleck, B; Basye, A T; Bathe, S; Batsouli, S; Baublis, V; Baumann, C; Baumgart, S; Bazilevsky, A; Belikov, S; Belmont, R; Bennett, R; Berdnikov, A; Berdnikov, Y; Bickley, A A; Bing, X; Blau, D S; Boissevain, J G; Bok, J S; Borel, H; Boyle, K; Brooks, M L; Buesching, H; Bumazhnov, V; Bunce, G; Butsyk, S; Camacho, C M; Campbell, S; Castera, P; Chang, B S; Chang, W C; Charvet, J-L; Chen, C-H; Chernichenko, S; Chi, C Y; Chiba, J; Chiu, M; Choi, I J; Choi, J B; Choi, S; Choudhury, R K; Christiansen, P; Chujo, T; Chung, P; Churyn, A; Chvala, O; Cianciolo, V; Citron, Z; Cleven, C R; Cole, B A; Comets, M P; Connors, M; Constantin, P; Csanád, M; Csörgő, T; Dahms, T; Dairaku, S; Danchev, I; Das, K; Datta, A; Daugherity, M S; David, G; Deaton, M B; Dehmelt, K; Delagrange, H; Denisov, A; d'Enterria, D; Deshpande, A; Desmond, E J; Dharmawardane, K V; Dietzsch, O; Ding, L; Dion, A; Donadelli, M; Drapier, O; Drees, A; Drees, K A; Dubey, A K; Durham, J M; Durum, A; Dutta, D; Dzhordzhadze, V; D'Orazio, L; Edwards, S; Efremenko, Y V; Egdemir, J; Ellinghaus, F; Emam, W S; Engelmore, T; Enokizono, A; En'yo, H; Esumi, S; Eyser, K O; Fadem, B; Fields, D E; Finger, M; Finger, M; Fleuret, F; Fokin, S L; Fraenkel, Z; Frantz, J E; Franz, A; Frawley, A D; Fujiwara, K; Fukao, Y; Fusayasu, T; Gadrat, S; Gainey, K; Gal, C; Garishvili, A; Garishvili, I; Glenn, A; Gong, H; Gong, X; Gonin, M; Gosset, J; Goto, Y; Granier de Cassagnac, R; Grau, N; Greene, S V; Grosse Perdekamp, M; Gunji, T; Guo, L; Gustafsson, H-Å; Hachiya, T; Hadj Henni, A; Haegemann, C; Haggerty, J S; Hahn, K I; Hamagaki, H; Hamblen, J; Han, R; Hanks, J; Harada, H; Hartouni, E P; Haruna, K; Hashimoto, K; Haslum, E; Hayano, R; He, X; Heffner, M; Hemmick, T K; Hester, T; Hiejima, H; Hill, J C; Hobbs, R; Hohlmann, M; Hollis, R S; Holzmann, W; Homma, K; Hong, B; Horaguchi, T; Hori, Y; Hornback, D; Huang, S; Ichihara, T; Ichimiya, R; Ide, J; Iinuma, H; Ikeda, Y; Imai, K; Imrek, J; Inaba, M; Inoue, Y; Iordanova, A; Isenhower, D; Isenhower, L; Ishihara, M; Isobe, T; Issah, M; Isupov, A; Ivanischev, D; Jacak, B V; Javani, M; Jia, J; Jiang, X; Jin, J; Jinnouchi, O; Johnson, B M; Joo, K S; Jouan, D; Jumper, D S; Kajihara, F; Kametani, S; Kamihara, N; Kamin, J; Kaneta, M; Kaneti, S; Kang, B H; Kang, J H; Kang, J S; Kanou, H; Kapustinsky, J; Karatsu, K; Kasai, M; Kawall, D; Kawashima, M; Kazantsev, A V; Kempel, T; Khanzadeev, A; Kijima, K M; Kikuchi, J; Kim, B I; Kim, C; Kim, D H; Kim, D J; Kim, E; Kim, E-J; Kim, H J; Kim, K-B; Kim, S H; Kim, Y-J; Kim, Y K; Kinney, E; Kiriluk, K; Kiss, Á; Kistenev, E; Kiyomichi, A; Klatsky, J; Klay, J; Klein-Boesing, C; Kleinjan, D; Kline, P; Kochenda, L; Kochetkov, V; Komatsu, Y; Komkov, B; Konno, M; Koster, J; Kotchetkov, D; Kotov, D; Kozlov, A; Král, A; Kravitz, A; Krizek, F; Kubart, J; Kunde, G J; Kurihara, N; Kurita, K; Kurosawa, M; Kweon, M J; Kwon, Y; Kyle, G S; Lacey, R; Lai, Y S; Lajoie, J G; Layton, D; Lebedev, A; Lee, B; Lee, D M; Lee, J; Lee, K; Lee, K B; Lee, K S; Lee, M K; Lee, S H; Lee, S R; Lee, T; Leitch, M J; Leite, M A L; Leitgab, M; Leitner, E; Lenzi, B; Lewis, B; Li, X; Liebing, P; Lim, S H; Linden Levy, L A; Liška, T; Litvinenko, A; Liu, H; Liu, M X; Love, B; Luechtenborg, R; Lynch, D; Maguire, C F; Makdisi, Y I; Makek, M; Malakhov, A; Malik, M D; Manion, A; Manko, V I; Mannel, E; Mao, Y; Mašek, L; Masui, H; Masumoto, S; Matathias, F; McCumber, M; McGaughey, P L; McGlinchey, D; McKinney, C; Means, N; Mendoza, M; Meredith, B; Miake, Y; Mibe, T; Mignerey, A C; Mikeš, P; Miki, K; Miller, T E; Milov, A; Mioduszewski, S; Mishra, D K; Mishra, M; Mitchell, J T; Mitrovski, M; Miyachi, Y; Miyasaka, S; Mohanty, A K; Moon, H J; Morino, Y; Morreale, A; Morrison, D P; Motschwiller, S; Moukhanova, T V; Mukhopadhyay, D; Murakami, T; Murata, J; Nagae, T; Nagamiya, S; Nagata, Y; Nagle, J L; Naglis, M; Nagy, M I; Nakagawa, I; Nakamiya, Y; Nakamura, K R; Nakamura, T; Nakano, K; Nattrass, C; Nederlof, A; Newby, J; Nguyen, M; Nihashi, M; Niida, T; Norman, B E; Nouicer, R; Novitzky, N; Nyanin, A S; O'Brien, E; Oda, S X; Ogilvie, C A; Ohnishi, H; Oka, M; Okada, K; Omiwade, O O; Onuki, Y; Oskarsson, A; Ouchida, M; Ozawa, K; Pak, R; Pal, D; Palounek, A P T; Pantuev, V; Papavassiliou, V; Park, B H; Park, I H; Park, J; Park, S K; Park, W J; Pate, S F; Patel, L; Pei, H; Peng, J-C; Pereira, H; Peresedov, V; Peressounko, D Yu; Petti, R; Pinkenburg, C; Pisani, R P; Proissl, M; Purschke, M L; Purwar, A K; Qu, H; Rak, J; Rakotozafindrabe, A; Ravinovich, I; Read, K F; Rembeczki, S; Reuter, M; Reygers, K; Reynolds, R; Riabov, V; Riabov, Y; Richardson, E; Roach, D; Roche, G; Rolnick, S D; Romana, A; Rosati, M; Rosen, C A; Rosendahl, S S E; Rosnet, P; Rukoyatkin, P; Ružička, P; Rykov, V L; Sahlmueller, B; Saito, N; Sakaguchi, T; Sakai, S; Sakashita, K; Sakata, H; Samsonov, V; Sano, M; Sano, S; Sarsour, M; Sato, S; Sato, T; Sawada, S; Sedgwick, K; Seele, J; Seidl, R; Semenov, A Yu; Semenov, V; Sen, A; Seto, R; Sharma, D; Shein, I; Shevel, A; Shibata, T-A; Shigaki, K; Shimomura, M; Shoji, K; Shukla, P; Sickles, A; Silva, C L; Silvermyr, D; Silvestre, C; Sim, K S; Singh, B K; Singh, C P; Singh, V; Skutnik, S; Slunečka, M; Soldatov, A; Soltz, R A; Sondheim, W E; Sorensen, S P; Soumya, M; Sourikova, I V; Sparks, N A; Staley, F; Stankus, P W; Stenlund, E; Stepanov, M; Ster, A; Stoll, S P; Sugitate, T; Suire, C; Sukhanov, A; Sun, J; Sziklai, J; Tabaru, T; Takagi, S; Takagui, E M; Takahara, A; Taketani, A; Tanabe, R; Tanaka, Y; Taneja, S; Tanida, K; Tannenbaum, M J; Tarafdar, S; Taranenko, A; Tarján, P; Tennant, E; Themann, H; Thomas, T L; Todoroki, T; Togawa, M; Toia, A; Tojo, J; Tomášek, L; Tomášek, M; Tomita, Y; Torii, H; Towell, R S; Tram, V-N; Tserruya, I; Tsuchimoto, Y; Tsuji, T; Vale, C; Valle, H; van Hecke, H W; Vargyas, M; Vazquez-Zambrano, E; Veicht, A; Velkovska, J; Vértesi, R; Vinogradov, A A; Virius, M; Vossen, A; Vrba, V; Vznuzdaev, E; Wagner, M; Walker, D; Wang, X R; Watanabe, D; Watanabe, K; Watanabe, Y; Watanabe, Y S; Wei, F; Wei, R; Wessels, J; White, S N; Winter, D; Wolin, S; Wood, J P; Woody, C L; Wright, R M; Wysocki, M; Xie, W; Yamaguchi, Y L; Yamaura, K; Yang, R; Yanovich, A; Yasin, Z; Ying, J; Yokkaichi, S; You, Z; Young, G R; Younus, I; Yushmanov, I E; Zajc, W A; Zaudtke, O; Zelenski, A; Zhang, C; Zhou, S; Zimányi, J; Zolin, L

    2013-07-19

    The jet fragmentation function is measured with direct photon-hadron correlations in p+p and Au+Au collisions at √[s(NN)]=200 GeV. The p(T) of the photon is an excellent approximation to the initial p(T) of the jet and the ratio z(T)=p(T)(h)/p(T)(γ) is used as a proxy for the jet fragmentation function. A statistical subtraction is used to extract the direct photon-hadron yields in Au+Au collisions while a photon isolation cut is applied in p+p. I(AA), the ratio of hadron yield opposite the photon in Au+Au to that in p+p, indicates modification of the jet fragmentation function. Suppression, most likely due to energy loss in the medium, is seen at high z(T). The associated hadron yield at low z(T) is enhanced at large angles. Such a trend is expected from redistribution of the lost energy into increased production of low-momentum particles.

  7. Canada : tous les projets | Page 10 | CRDI - Centre de recherches ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Le CRDI administre l'apport de 20 millions de dollars du gouvernement du Canada à l'expansion du réseau de centre AIMS, l'objectif de l'initiative Next Einstein de l'Institut Africain des Sciences Mathématiques (AIMS-NEI). Sujet: SCIENCE. Région: North of Sahara, South of Sahara, Benin, Ethiopia, Ghana, Senegal, ...

  8. Equilibrium binding studies of mono, di and triisocyanide ligands on Au powder surfaces

    Energy Technology Data Exchange (ETDEWEB)

    Ontko, Alyn [Iowa State Univ., Ames, IA (United States)

    1997-10-08

    The author`s group has previously shown that isocyanides are readily adsorbed from solutions to Au powder and bind to the Au surface in an end-on fashion through the terminal carbon. Later work demonstrated that the equilibrium constants for the reversible adsorption of electronically inequivalent isocyanides could be obtained using the Langmuir isotherm technique. This dissertation describes two projects completed which complement the initial findings of this group. Initially, several alkylisocyanides were synthesized to examine the effect of tail length on Au powder adsorption. It was observed that the length of the alkyl chain affected not only the Au surface binding affinity, but also the rate of surface saturation and saturation coverage values. Direct competition studies were also studied using a 13C-labeled isocyanide. These studies demonstrated the stabilization afforded by substrate-substrate packing forces in SAM`s formed by the longer chain isocyanides. In a second study, di and triisocyanides were synthesized to determine the effect that the length of the connecting link and the number of isocyanide groups (as points of attachment) have on Au adsorption stability. The work in this area describes the binding modes, relative binding affinities and surface coverage values for a series of flexible alkyl and xylyldiisocyanides on Au powder surfaces. This report contains only the introductory material, and general summary. Two chapters have been processed separately. 56 refs.

  9. Growth morphology of nanoscale sputter-deposited Au films on amorphous soft polymeric substrates

    Science.gov (United States)

    Ruffino, F.; Torrisi, V.; Marletta, G.; Grimaldi, M. G.

    2011-06-01

    The growth of a room-temperature sputter-deposited thin Au film on two soft polymeric substrates, polystyrene (PS) and poly(methyl methacrylate) (PMMA), from nucleation to formation of a continuous film is investigated by means of atomic force microscopy. In particular, we studied the surface morphology evolution of the film as a function of the deposition time observing an initial Au three-dimensional island-type growth. Then the Au film morphology evolves, with increasing deposition time, from hemispherical islands to partially coalesced worm-like island structures, to percolation, and finally to a continuous and rough film. The overall Au morphology evolution is discussed in the framework of the interrupted coalescence model, allowing us to evaluate the island critical radius for the partial coalescence R c=8.7±0.9 nm for Au on PS and R c=7.6±0.8 nm for Au on PMMA. Furthermore, the application of the kinetic freezing model allows us to evaluate the room-temperature surface diffusion coefficient D s≈1.8×10-18 m2/s for Au on PS and D s≈1.1×10-18 m2/s for Au on PMMA. The application of the Vincent model allows us, also, to evaluate the critical coverage (at which the percolation occurs) P c=61% for Au on PS and P c=56% for Au on PMMA. Finally, the dynamic scaling theory of a growing interface was applied to characterize the kinetic roughening of the Au film on both PMMA and PS. Such analyses allow us to evaluate the dynamic scaling, growth, and roughness exponents z=3.8±0.4, β=0.28±0.03, α=1.06±0.05 for the growth of Au on PS and z=4.3±0.3, β=0.23±0.03, α=1.03±0.05 for the growth of Au on PMMA, in agreement with a non-equilibrium but conservative and linear growth process in which the surface diffusion phenomenon plays a key role.

  10. Systematic study of molecular beam epitaxy growth and magnetic properties of Fe on Au(111)

    Science.gov (United States)

    Xu, J.; Howson, M. A.; Hucknall, P.; Hickey, B. J.; Venkataraman, R.; Hammond, C.; Walker, M. J.; Greig, D.

    1997-04-01

    We have grown a series of Fe samples on Au(111) by molecular beam epitaxy. Fe was grown on Au at 30 °C and shows clear reflection high energy electron diffraction (RHEED) oscillations up to 8 monolayers, suggesting layer-by-layer growth on Au. A combined study of RHEED, medium energy ion scattering, and x-ray diffraction scans has strongly indicated that Fe initially grew as fcc(111) on Au(111) below the thickness of 3 monolayer and for the subsequent growth the Fe bcc(110) structure begins to form. Magneto-optical Kerr effect measurement has shown that the magnetization easy axis lies in the plane of the film for the thickness range from 3 to 20 Å and there is a perpendicular anisotropy when the thickness of Fe is about one monolayer.

  11. [FR] Le developpment du Travail Social et le pluralisme au Québec

    Directory of Open Access Journals (Sweden)

    André Jacob

    2011-06-01

    Full Text Available Normal 0 21 false false false ES X-NONE X-NONE MicrosoftInternetExplorer4 Au Canada et au Québec, traiter des questions liées à la diversité culturelle et au racisme a été un défi pour les gouvernements depuis les années soixante. Auparavant et jusqu'à présent, une grande partie des responsabilités en termes de développement ethnoculturel sensible des services publics (services sociaux, des programmes de formation en travail social, etc. ont été laissés aux mains d’organismes de charité non-lucratifs. Cependant, peu à peu, depuis les années soixante, le gouvernement fédéral et le gouvernement provincial, ont dû développer des politiques et des programmes d'action. Au Québec, le travail social a fait partie du débat face à deux grands courants politiques, l’un canadien basé sur le multiculturalisme, et l’autre québécois basé sur l'interculturalisme. L'article vise à donner une perspective historique

  12. Geology and assessment of undiscovered oil and gas resources of the West Greenland-East Canada Province, 2008

    Science.gov (United States)

    Schenk, Christopher J.; Moore, Thomas E.; Gautier, Donald L.

    2018-01-05

    The U.S. Geological Survey (USGS) recently assessed the potential for undiscovered oil and gas resources of the West Greenland-East Canada Province as part of the USGS Circum-Arctic Resource Appraisal program. The province lies in the offshore area between western Greenland and eastern Canada and includes Baffin Bay, Davis Strait, Lancaster Sound, and Nares Strait west of, and including, part of Kane Basin. A series of major tectonic events led to the formation of several distinct structural domains that are the geologic basis for defining five assessment units (AU ) in the province, all of which are within the Mesozoic-Cenozoic Composite Total Petroleum System (TPS). Potential petroleum source rocks within the TPS include strata of Ordovician, Lower and Upper Cretaceous, and Paleogene ages. The five AUs defined for this study—the Eurekan Structures AU, Northwest Greenland Rifted Margin AU, Northeast Canada Rifted Margin AU, Baffin Bay Basin AU, and the Greater Ungava Fault Zone AU— encompass the entire province and were assessed for undiscovered, technically recoverable resources. The estimated mean volumes of undiscovered resources for the West GreenlandEast Canada Province are 10.7 billion barrels of oil, 75 trillion cubic feet of gas, and 1.7 billion barrels of natural gas liquids. For the part of the province that is north of the Arctic Circle, the estimated mean volumes of these undiscovered resources are 7.3 billion barrels of oil, 52 trillion cubic feet of natural gas, and 1.1 billion barrels of natural-gas liquids.

  13. Mounting ground sections of teeth: Cyanoacrylate adhesive versus Canada balsam.

    Science.gov (United States)

    Vangala, Manogna Rl; Rudraraju, Amrutha; Subramanyam, R V

    2016-01-01

    Hard tissues can be studied by either decalcification or by preparing ground sections. Various mounting media have been tried and used for ground sections of teeth. However, there are very few studies on the use of cyanoacrylate adhesive as a mounting medium. The aim of our study was to evaluate the efficacy of cyanoacrylate adhesive (Fevikwik™) as a mounting medium for ground sections of teeth and to compare these ground sections with those mounted with Canada balsam. Ground sections were prepared from twenty extracted teeth. Each section was divided into two halves and mounted on one slide, one with cyanoacrylate adhesive (Fevikwik™) and the other with Canada balsam. Scoring for various features in the ground sections was done by two independent observers. Statistical analysis using Student's t-test (unpaired) of average scores was performed for each feature observed. No statistically significant difference was found between the two for most of the features. However, cyanoacrylate was found to be better than Canada balsam for observing striae of Retzius (P enamel lamellae (P < 0.036), dentinal tubules (P < 0.0057), interglobular dentin (P < 0.0001), sclerotic dentin - transmitted light (P < 0.00001), sclerotic dentin - polarized light (P < 0.0002) and Sharpey's fibers (P < 0.0004). This initial study shows that cyanoacrylate is better than Canada balsam for observing certain features of ground sections of teeth. However, it remains to be seen whether it will be useful for studying undecalcified sections of carious teeth and for soft tissue sections.

  14. Comparative study of anchoring groups for molecular electronics: structure and conductance of Au-S-Au and Au-NH{sub 2}-Au junctions

    Energy Technology Data Exchange (ETDEWEB)

    Kristensen, I S; Mowbray, D J; Thygesen, K S; Jacobsen, K W [Center for Atomic-scale Materials Design (CAMD), Department of Physics, Building 307, Technical University of Denmark, DK-2800 Kongens Lyngby (Denmark)

    2008-09-17

    The electrical properties of single-molecule junctions, consisting of an organic molecule coupled to metal electrodes, are sensitive to the detailed atomic structure of the molecule-metal contact. This, in turn, is determined by the anchoring group linking the molecule to the metal. With the aim of identifying and comparing the intrinsic properties of two commonly used anchoring groups, namely thiol and amine groups, we have calculated the atomic structure and conductance traces of different Au-S-Au and Au-NH{sub 2}-Au nanojunctions using density functional theory (DFT). Whereas NH{sub 2} shows a strong structural selectivity towards atop-gold configurations, S shows large variability in its bonding geometries. As a result, the conductance of the Au-NH{sub 2}-Au junction is less sensitive to the structure of the gold contacts than the Au-S-Au junction. These findings support recent experiments which show that amine-bonded molecules exhibit more well-defined conductance properties than do thiol-bonded molecules.

  15. Travailler avec Windows 7 au CERN (FR)

    CERN Multimedia

    CERN. Geneva

    2010-01-01

    Vue d'ensemble des nouveaux concepts et des changements dans l'interface utilisateur survenus dans Windows 7 depuis les versions antérieures de Windows (XP ou Vista). La mise à disposition de Windows 7 au CERN et son intégration dans l’infrastructure de Windows au CERN seront présentées.

  16. English for au pairs the au pair's guide to learning English

    CERN Document Server

    Curtis, Lucy

    2014-01-01

    English for Au Pairs has interlinked stories about a group of au pairs new to England. Marta, an 18-year-old from Poland arrives in the UK to work as an au pair. Throughout her year-long stay she has many different experiences - some bad, some good - but with the support of her host family she finds new friends and improves her English. English for Au Pairs offers insight into the joys and difficulties of being an au pair while at the same time reinforcing English language learning through grammar explanations and exercises.

  17. Au microstructure and the functional properties of Ni/Au finishes on ceramic IC packages

    Energy Technology Data Exchange (ETDEWEB)

    Winters, E.D.; Baxter, W.K. [Coors Electronic Package Co., Chattanooga, TN (United States); Braski, D.N.; Watkins, T.R. [Oak Ridge National Lab., TN (United States)

    1995-12-31

    Ni/Au plated finishes used on thick-film metallized multilayer ceramic packages for integrated circuits must meet functional requirements such as bondability, sealability, and solderability. Their ability to do so is dependent, among other things, on the ability of the Au deposit to inhibit the grain boundary diffusion and subsequent surface oxidation of Ni. In this study, the relation between functional performance, Ni diffusionr ate, and Au microstructure was examined. Extent of Ni diffusion during heating was determined by Auger electron spectroscopy for several electrolytic and electroless Ni/Au finishing processes. Results were correlated with differences in Au microstructures determined by SEM, atomic force microscopy, and XRD.

  18. Pharmacy information systems in Canada.

    Science.gov (United States)

    Barnett, Jeff; Jennings, Heather

    2009-01-01

    The goal of Canada Health Infoway is to provide at least 50% of all Canadians with an electronic health record (EHR) by 2010. The goal of the Infoway Drug Information Systems Program is to develop an interoperable drug information system that will keep each patient's medication history: prescribed and dispensed drugs, allergies, ongoing drug treatment, etc. Drug and drug-interaction checks will be performed automatically and added to the patients' drug profiles. Physicians and pharmacists will be supplied with data to support appropriate and accurate prescribing and dispensing, thereby avoiding adverse drug interactions and drug-related deaths [1]. This paper describes Canadian developments in pharmacy eHealth. It presents the results of the Pharmacy Informatics Pharmacy Special Networks (PSN) survey about computer systems used in hospital pharmacies across Canada including information concerning Computerized Provider Order Entry (CPOE) systems deployed; which may reduce the number of errors in orders.

  19. L'intensite du capital au Canada et aux Etats-Unis, 1987 a 2003

    OpenAIRE

    Baldwin, John R.; Fisher, Anthony; Gu, Wulong; Frank C. Lee; Robidoux, Benoit

    2008-01-01

    Les donnees officielles produites par les organismes statistiques ne sont pas toujours ideales aux fins de comparaisons entre pays en raison de differences relatives aux sources de donnees et de la methodologie. Les analystes qui procedent a des comparaisons entre pays doivent choisir avec soin entre plusieurs options et parfois adapter les donnees a leurs propres fins. Dans le present document, nous elaborons des estimations comparables du stock de capital pour examiner l'intensite relative ...

  20. Évaluation scientifique 2004 des dépôts acides au Canada

    National Research Council Canada - National Science Library

    2005-01-01

    ... des écosystèmes aquatiques et terrestres; 4) les effets sur les forêts et les sols, les écosystèmes aquatiques, la faune et la santé humaine; 5) le rétablissement des écosystèmes aquatiques; 6...

  1. La promotion de l'écosanté au Canada | IDRC - International ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    24 oct. 2012 ... Leishmaniasis: sickness without borders. A fly carrying a deadly parasite is endemic in the jungles of the Iguazu Falls, located where the borders of Brazil, Argentina and Paraguay mee. View moreLeishmaniasis: sickness without borders ...

  2. La promotion de l'écosanté au Canada | CRDI - Centre de ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    24 oct. 2012 ... Depuis le milieu des années 1990, le CRDI fait oeuvre de pionnier en finançant des travaux fondés sur une démarche écosystémique de la santé (écosanté). Les chercheurs en écosanté examinent les liens qui existent entre la santé humaine, la société et la qualité de l'environnement. La recherche en ...

  3. Canada-U.S. Relations

    Science.gov (United States)

    2009-05-12

    2008 budget seeks to ensure continuity through the Canada First Defence Strategy , which will provide for yearly increases of 2% beginning in 2011-12...Minister Harper of permitting Canada’s Afghanistan strategy “to be defined by Washington.” He stated that “once [Canada’s] military mission ends in...56 RBC Financial Group, Daily Forex Fundamentals, February 27, 2009. [ http

  4. Can Canada Avoid Arctic Militarization?

    Science.gov (United States)

    2014-05-20

    global market and the evolution of new fracking technology for the extraction of shale hydrocarbons, the development of the Canadian Arctic might not...Powers and Prospects in Canada’s North, ed. Abele Frances (Montréal: Institute for Research on Public Policy, 2009), 378. 167Richard Spencer, “ Fracking ...Boom Frees the US from Old Oil Alliances,” The Telegraph, December 13, 2013, http://www.telegraph.co.uk/earth/energy/oil/10476647/ Fracking -boom-frees

  5. Canada: expanding nuclear fuel exports

    Energy Technology Data Exchange (ETDEWEB)

    Paehlke, R.

    1978-01-01

    Uranium is soon to be a very big business in Canada and most of the expansion is bound for export markets. The expansions that are planned are both in uranium mining and in fuel processing. Almost all environmental problems associated with the nuclear fuel cycle thus far in Canada have been associated with these two phases of the cycle: mining and processing. The water in Elliot Lake has been found to have high concentrations of radium and the drinking water of Serpent River, Ontario--downwater from Elliot Lake--has been found to be contaminated by excess radioactivity. Buildings in both Port Hope, Ontario, and Uranium City, Saskatchewan (near Eldorado's Saskatchewan minesite), have excess radiation counts attributable to radon and radon daughter gases. Several aspects of the expansion are currently undergoing environmental impact assessment. Far and away the most careful and balanced inquiry is the Saskatchewan government-appointed inquiry under Mr. Justice E. D. Bayda of the Saskatchewan Appeals Court. This inquiry is, in the first instance, examining a proposal by Amok Ltee., a consortium of a French multinational and the French government, to develop a $135 million uranium mine and mill at Cluff Lake in the northern portion of Saskatchewan. But the inquiry is considering all aspects and implications of the full nuclear fuel cycle. The second stage of the uranium boom in Canada centers on processing. Here two major new plants are proposed by Eldorado Nuclear: one at Port Granby, Ontario; the second at Varman, Saskatchewan. Several massive nuclear power stations are planned east of Toronto, but nuclear opposition is growing in Canada. (MCW)

  6. Structure of the thiolated Au130 cluster.

    Science.gov (United States)

    Tlahuice-Flores, Alfredo; Santiago, Ulises; Bahena, Daniel; Vinogradova, Ekaterina; Conroy, Cecil V; Ahuja, Tarushee; Bach, Stephan B H; Ponce, Arturo; Wang, Gangli; José-Yacamán, Miguel; Whetten, Robert L

    2013-10-10

    The structure of the recently discovered Au130-thiolate and -dithiolate clusters is explored in a combined experiment-theory approach. Rapid electron diffraction in scanning/transmission electron microscopy (STEM) enables atomic-resolution imaging of the gold core and the comparison with density functional theory (DFT)-optimized realistic structure models. The results are consistent with a 105-atom truncated-decahedral core protected by 25 short staple motifs, incorporating disulfide bridges linking the dithiolate ligands. The optimized structure also accounts, via time-dependent DFT (TD-DFT) simulation, for the distinctive optical absorption spectrum, and rationalizes the special stability underlying the selective formation of the Au130 cluster in high yield. The structure is distinct from, yet shares some features with, each of the known Au102 and Au144/Au146 systems.

  7. Gas-phase experiments on Au(III) photochemistry.

    Science.gov (United States)

    Marcum, Jesse C; Kaufman, Sydney H; Weber, J Mathias

    2011-04-14

    Irradiation of AuCl(4)(-) and AuCl(2)(OH)(2)(-) in the gas-phase using ultraviolet light (220-415 nm) leads to their dissociation. Observed fragment ions for AuCl(4)(-) are AuCl(3)(-) and AuCl(2)(-) and for AuCl(2)(OH)(2)(-) are AuCl(2)(-) and AuClOH(-). All fragment channels correspond to photoreduction of the gold atom to either Au(II) or Au(I) depending on the number of neutral ligands lost. Fragment branching ratios of AuCl(4)(-) are observed to be highly energy dependent and can be explained by comparison of the experimental data to calculated threshold energies obtained using density functional theory. The main observed spectral features are attributed to ligand-to-metal charge transfer transitions. These results are discussed in the context of the molecular-level mechanisms of Au(III) photochemistry.

  8. Magnetic depth profiling of Fe/Au multilayer using neutron ...

    Indian Academy of Sciences (India)

    Au multilayer sample for characterizing the layer structure and magnetic moment density profile. Fe/Au multilayer shows strong spin-dependent scattering at interfaces, making it a prospective GMR material. Fe/Au multilayer with bilayer ...

  9. Indigenous Educational Attainment in Canada

    Directory of Open Access Journals (Sweden)

    Catherine E. Gordon

    2014-06-01

    Full Text Available In this article, the educational attainment of Indigenous peoples of working age (25 to 64 years in Canada is examined. This diverse population has typically had lower educational levels than the general population in Canada. Results indicate that, while on the positive side there are a greater number of highly educated Indigenous peoples, there is also a continuing gap between Indigenous and non-Indigenous peoples. Data also indicate that the proportion with less than high school education declined, which corresponds with a rise of those with a PSE; the reverse was true in 1996. Despite these gains, however, the large and increasing absolute numbers of those without a high school education is alarming. There are intra-Indigenous differences: First Nations with Indian Status and the Inuit are not doing as well as non-Status and Métis peoples. Comparisons between the Indigenous and non-Indigenous populations reveal that the documented gap in post-secondary educational attainment is at best stagnant. Out of the data analysis, and based on the history of educational policy, we comment on the current reform proposed by the Government of Canada, announced in February of 2014, and propose several policy recommendations to move educational attainment forward.

  10. Women in Physics in Canada

    Science.gov (United States)

    McKenna, Janis

    2012-10-01

    Here we are in the 21st century in Canada, where most of us would say that young girls and boys have equal access to education, opportunities, and careers of their own choice. In Canada, women currently outnumber men in full-time university enrollment, in Medical Schools and in Law Schools. 48% of the Canadian work force is female, yet women make up only 21% of working professionals in science, engineering and technology. Canada-wide in Physics, the situation is such that only 20% of our BSc graduates are women, and 19% of our PhD graduates are women. It is evident that the ``leaky pipeline'' in Physics leaks most at a young age, before BSc graduation. High school physics statistics in BC indicate that while most of the grade 12 science and math disciplines have roughly equal numbers of young men and women enrolled, this is not the case for high school physics, where province-wide, only 30% of Physics 12 students are women. (Biology is also skewed, but in the other direction: 62% of Biology 12 students are women) This poster will present current statistics and will hopefully be a wake-up call for us all to consider participating in more outreach in science, and especially physics, in our high schools.

  11. Injuries related to off-road vehicles in Canada.

    Science.gov (United States)

    Vanlaar, Ward; McAteer, Heather; Brown, Steve; Crain, Jennifer; McFaull, Steven; Hing, Marisela Mainegra

    2015-02-01

    Off-road vehicles (ORVs; this includes snowmobiles, all-terrain vehicles or ATVs and dirt bikes) were once used primarily for work and travel. Such use remains common in Canada, although their recreational use has also gained popularity in recent years. An epidemiological injury profile of ORV users is important for better understanding injuries and their risk factors to help inform injury prevention initiatives. The Traffic Injury Research Foundation (TIRF) partnered with the Public Health Agency of Canada (PHAC) to analyze the epidemiology of ORV-related injuries. The primary aim was to assess crashes and injuries in Canada, including the extent of alcohol involvement. Secondly, the burden of injury among children and teen ORV drivers in Canada, as well as passengers, was investigated. Descriptive and inferential epidemiological statistics were generated using the following data sources: first, TIRF's National Fatality Database, which is a comprehensive, pan-Canadian, set of core data on all fatal motor vehicle crashes; second, TIRF's Serious Injury Database, which contains information on persons seriously injured in crashes; and, third, PHAC's Canadian Hospitals Injury Reporting and Prevention Program (CHIRPP), a surveillance system currently operating in the emergency departments of some pediatric and general hospitals across Canada. Exposure data have been used in the analyzes where available. Between 1990 and 2010, fatality rates increased among ATV and dirt bike operators. The fatality rate among snowmobilers declined during this period. Of particular concern, among fatally injured female ATV users, children aged 0-15 years comprised the highest proportion of any age group at 33.8%. Regarding alcohol use, among fatally injured snowmobile and ATV/dirt bike operators tested for alcohol, 66% and 55% tested positive, respectively. Alcohol involvement in adult ORV crashes remains an important factor. In light of the growing popularity of ORVs, prevention and

  12. International Research Chairs Initiative | IDRC - International ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    The International Research Chairs Initiative (IRCI) is a seven-year, CA$8 million research program that pairs top research talent from universities in Canada with their counterparts in developing countries to address key development challenges. These specialists share their advanced skills and knowledge to confront issues ...

  13. Au dissolution during the anodic response of short-chain alkylthiols with polycrystalline Au electrodes

    Energy Technology Data Exchange (ETDEWEB)

    Smith, Scott R. [Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario P3E 2C6 (Canada); Guerra, Eduard [School of Engineering, Laurentian University, Sudbury, Ontario P3E 2C6 (Canada); Siemann, Stefan [Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario P3E 2C6 (Canada); Shepherd, Jeffrey L., E-mail: jshepherd@laurentian.ca [Department of Chemistry and Biochemistry, Laurentian University, Sudbury, Ontario P3E 2C6 (Canada)

    2011-10-01

    Highlights: > 3-Mercaptopropionic acid (MPA) or meso-2,3-dimercaptosuccinic acid (DMSA) mediated Au corrosion in aqueous electrolytes at anodic potentials. > Au is roughened and passivated by an insoluble Au-MPA product. > Au is leached into the aqueous electrolyte as a soluble Au-DMSA species ({approx}60 ppb, 12 h). - Abstract: The electrochemical characteristics of polycrystalline Au in LiClO{sub 4} electrolyte solutions containing 3-mercaptopropionic acid (MPA) or meso-2,3-dimercaptosuccinic acid (DMSA) were studied with linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) over a wide range of positive potentials vs. Ag/AgCl. The EIS data exhibited linear capacitive behaviour at 0.0 V with either MPA or DMSA added directly to the electrolyte suggesting the formation of an adsorbed layer of the alkylthiol on the electrode surface. Above this potential, a single well-defined impedance loop appeared for electrolyte solutions containing DMSA or MPA, an observation indicative of a charge transfer reaction that could be related to several processes including oxidative desorption, oxidation of the alkylthiol, or Au oxidation/dissolution. To test for Au dissolution, the electrode was held at 0.8 V vs. Ag/AgCl for 12 h in electrolytes containing MPA or DMSA followed by surface analysis with Atomic Force Microscopy and solution analysis with Atomic Absorption Spectroscopy. When the electrolyte contained MPA, the extended potential holding procedure resulted in significant roughening of the electrode with no detectable quantities of Au in the electrolyte. X-ray photoelectron spectroscopy (XPS) analysis of the Au surface revealed an additional species in the Au 4f{sub 7/2} spectrum indicating the presence of an insoluble electrochemically generated Au(I)-MPA species. When the electrolyte contained DMSA, the Au electrode appeared smoother, 56.6 {+-} 9.6 ppb of Au was detected in the electrolyte and the XPS analysis displayed a single species in the

  14. Au/Au@polythiophene core/shell nanospheres for heterogeneous catalysis of nitroarenes.

    Science.gov (United States)

    Shin, Hye-Seon; Huh, Seong

    2012-11-01

    Monodisperse Au/Au@polythiophene core/shell nanospheres were facilely prepared through the reduction of gold precursor, AuCl₄⁻, by 2-thiopheneacetonitrile in an aqueous solution. Concomitantly, 2-thiopheneacetonitrile polymerized during this redox process. As a result, Au nanoparticle was encapsulated by conductive polymer shell to afford novel core/shell nanospheres. Interestingly, the shell was composed of very tiny Au nanoparticles surrounded with thiophene polymers. Thus, the new material is best described as Au/Au@polythiophene core/shell nanospheres. FT-IR spectroscopy revealed that the Au nanoparticles were coordinated by the C≡N groups of the polythiophene shell. Some of the C≡N groups were partially hydrolyzed into COOH groups during the redox process because of the acidic reaction condition. The shell was conductive based on the typical ohmic behavior found in electrical measurement. The Au/Au@polythiophene core/shell nanospheres were found to be very active catalysts for the hydrogenation of various nitroarene compounds into corresponding aminoarene compounds in the presence of NaBH₄. Both hydrophilic and hydrophobic nitroarenes were efficiently hydrogenated under mild conditions.

  15. Biosupported bimetallic Pd-Au nanocatalysts for dechlorination of environmental contaminants.

    Science.gov (United States)

    De Corte, Simon; Hennebel, Tom; Fitts, Jeffrey P; Sabbe, Tom; Bliznuk, Vitaliy; Verschuere, Stephanie; van der Lelie, Daniel; Verstraete, Willy; Boon, Nico

    2011-10-01

    Biologically produced monometallic palladium nanoparticles (bio-Pd) have been shown to catalyze the dehalogenation of environmental contaminants, but fail to efficiently catalyze the degradation of other important recalcitrant halogenated compounds. This study represents the first report of biologically produced bimetallic Pd/Au nanoparticle catalysts. The obtained catalysts were tested for the dechlorination of diclofenac and trichlorethylene. When aqueous bivalent Pd(II) and trivalent Au(III) ions were both added to concentrations of 50 mg L(-1) and reduced simultaneously by Shewanella oneidensis in the presence of H(2), the resulting cell-associated bimetallic nanoparticles (bio-Pd/Au) were able to dehalogenate 78% of the initially added diclofenac after 24 h; in comparison, no dehalogenation was observed using monometallic bio-Pd or bio-Au. Other catalyst-synthesis strategies did not show improved dehalogenation of TCE and diclofenac compared with bio-Pd. Synchrotron-based X-ray diffraction, (scanning) transmission electron microscopy and energy dispersive X-ray spectroscopy indicated that the simultaneous reduction of Pd and Au supported on cells of S. oneidensis resulted in the formation of a unique bimetallic crystalline structure. This study demonstrates that the catalytic activity and functionality of possibly environmentally more benign biosupported Pd-catalysts can be improved by coprecipitation with Au.

  16. Open heavy flavor measurements in d+Au collisions at PHENIX experiment

    Directory of Open Access Journals (Sweden)

    Lim Sanghoon

    2014-04-01

    Full Text Available The heavy quarks produced in the early stage of heavy-ion collisions are very effective probes of the dense partonic medium produced at RHIC. PHENIX has the ability to measure heavy quark production through single electrons in the central arm spectrometers (|η| < 0.35 and single muons in the forward (backward muon spectrometers (1.2 < |η| < 2.2. As these single leptons are from open heavy-flavor meson semi-leptonic decays, initial state cold nuclear matter effects on heavy quark production can be probed by measuring the single leptons in d+Au collisions. PHENIX have observed a large enhancement of heavy-flavor electrons in d+Au collisions at mid-rapidity, which indicates strong CNM effects on heavy quark production, in contrast to the suppression observed in Au+Au collisions. Measurement of single muons from open heavy flavor in d+Au collisions at forward (backward rapidity provide detailed look into rapidity dependent CNM effects as well as the low (high x parton distribution function within Au nucleus. We discuss recent PHENIX heavy flavor measurements and how they expand our understanding of CNM effects and contribute to the interpretation of other results in heavy-ion collisions.

  17. Filipino au pairs on the move

    DEFF Research Database (Denmark)

    Dalgas, Karina Märcher

    2016-01-01

    interdependence, whilst they continuously form their trajectories in relation to opportunities and restraints posed along the way by their local and transnational social relations. The article argues that examinations of migration trajectories benefit from broadening the research out in both time and space......Most Filipina au pairs in Denmark send remittances back home, and for many, au pairing forms part of longer-term migration trajectories. This article explores how Filipina au pairs try to carve out a future for themselves abroad. It shows that they navigate within tight webs of financial...

  18. Becoming independent through au pair migration

    DEFF Research Database (Denmark)

    Dalgas, Karina Märcher

    2015-01-01

    . This article argues that, despite this critique, au pairing does play an important formative role for young Filipinas because it opens up for experiences abroad that enable them to be recognised as independent adults in Philippine society. Rather than autonomy, however, au pairs define their independence...... in terms of their capacity to assume responsibility for others, thereby achieving a position of social respect. Based on ethnographic fieldwork in Denmark and the Philippines, this article explores how young Filipinas use the social, economic, and cultural resources they gain from their au pair stay abroad...

  19. Isolation of humic acid from peat soil and its application as an adsorbent for AuCl4- in solution

    Science.gov (United States)

    Lestari, Puji

    2017-03-01

    Humic acid (HA) has been isolated from South Kalimantan (Indonesia) peat soil using alkali extraction method. The isolated HA then was applied on the adsorption process of AuCl4- in solution. Parameters investigated in the adsorption process consisted of the effect of initial pH, adsorption rate constant (k) and the adsorption capacity of AuCl4- on peat soil HA. The adsorption rate constant was determined according to the kinetic model proposed by Santosa (2007). The adsorption of AuCl4- on peat soil HA was optimum at pH 2. The adsorption rate constant (k) was 1.11 × 10-3 min-1. Adsorption of AuCl4- on peat soil HA fitted the Langmuir isotherm with the adsorption capacity of 90.91 mg.g-1. The adsorption of AuCl4- on peat soil HA was accompanied by the reduction of AuCl4- to Au(0), clarified by the existence of several peaks belonging to Au(0) in the XRD pattern of HA after the adsorption process.

  20. CO oxidation on colloidal Au(0.80)Pd(0.20)-Fe(x)O(y) dumbbell nanocrystals.

    Science.gov (United States)

    George, Chandramohan; Genovese, Alessandro; Casu, Alberto; Prato, Mirko; Povia, Mauro; Manna, Liberato; Montanari, Tania

    2013-02-13

    We report a colloidal synthesis of Au(0.80)Pd(0.20)-Fe(x)O(y) dumbbell nanocrystals (NCs) derived from Au(0.75)Pd(0.25) NCs by metal oxide overgrowth. We compared the catalytic activity of the two types of NCs in the CO oxidation reaction (CO + 1/2O(2) → CO(2)), after they had been dispersed on an alumina nanopowder support. In both cases, the surface active sites were identified by means of in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). The enhanced catalytic performance of the dumbbell NCs (Au(0.80)Pd(0.20)-Fe(x)O(y)) catalyst over that of the initial Au(0.75)Pd(0.25) NCs could be correlated to the presence of the epitaxial connection between the Fe(x)O(y) and the Au(0.80)Pd(0.20) domains (as the main factor). Such connection should result in an electron flow from the metal oxide (Fe(x)O(y)) domain to the noble metal (Au(0.80)Pd(0.20)) domain and appears to influence favorably the nature and composition of the catalytically active surface sites of the dumbbells. Our experiments indicate indeed that, when the metal alloy domain is attached to the metal oxide domain (that is, in the dumbbell), surface Pd species are more active than in the case of the initial Au(0.75)Pd(0.25) NCs and also Au(δ-) sites are formed that were not present on the initial Au(0.75)Pd(0.25) NCs.

  1. La participation des personnes utilisatrices aux exercices de planification et d'organisation des services de santé mentale au Québec

    Directory of Open Access Journals (Sweden)

    Michèle Clément

    2013-10-01

    Full Text Available Cet article documente la manière dont s'est renouvelé et s'est transformé au fil du temps le projet de faire participer les usagers aux exercices de planification et d'organisation des services de santé mentale au Québec (Canada. Pour ce faire, les auteurs reviennent sur l'ensemble des documents ministériels qui ont traité de cette question et dégage, pour les principaux moment-clés, les principales modalités de participation des usagers.

  2. Synthesis of ultrathin face-centered-cubic Au@Pt and Au@Pd core-shell nanoplates from hexagonal-close-packed Au square sheets

    KAUST Repository

    Fan, Zhanxi

    2015-03-17

    The synthesis of ultrathin face-centered-cubic (fcc) Au@Pt rhombic nanoplates is reported through the epitaxial growth of Pt on hexagonal-close-packed (hcp) Au square sheets (AuSSs). The Pt-layer growth results in a hcp-to-fcc phase transformation of the AuSSs under ambient conditions. Interestingly, the obtained fcc Au@Pt rhombic nanoplates demonstrate a unique (101)f orientation with the same atomic arrangement extending from the Au core to the Pt shell. Importantly, this method can be extended to the epitaxial growth of Pd on hcp AuSSs, resulting in the unprecedented formation of fcc Au@Pd rhombic nanoplates with (101)f orientation. Additionally, a small amount of fcc (100)f-oriented Au@Pt and Au@Pd square nanoplates are obtained with the Au@Pt and Au@Pd rhombic nanoplates, respectively. We believe that these findings will shed new light on the synthesis of novel noble bimetallic nanostructures. Phase change: Ultrathin Au@Pt and Au@Pd core-shell nanoplates were prepared from Au square sheets. A phase transformation from hexagonal close-packed (hcp) to face-centered cubic (fcc) is observed upon coating the hcp Au square sheets with Pt or Pd under ambient conditions. The prepared fcc Au@Pt and Au@Pd rhombic nanoplates demonstrate unique (101)f orientation (picture shows a typical fcc Au@Pt rhombic nanoplate). © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  3. Trends in extinction risk for imperiled species in Canada.

    Directory of Open Access Journals (Sweden)

    Brett Favaro

    Full Text Available Protecting and promoting recovery of species at risk of extinction is a critical component of biodiversity conservation. In Canada, the Committee on the Status of Endangered Wildlife in Canada (COSEWIC determines whether species are at risk of extinction or extirpation, and has conducted these assessments since 1977. We examined trends in COSEWIC assessments to identify whether at-risk species that have been assessed more than once tended to improve, remain constant, or deteriorate in status, as a way of assessing the effectiveness of biodiversity conservation in Canada. Of 369 species that met our criteria for examination, 115 deteriorated, 202 remained unchanged, and 52 improved in status. Only 20 species (5.4% improved to the point where they were 'not at risk', and five of those were due to increased sampling efforts rather than an increase in population size. Species outcomes were also dependent on the severity of their initial assessment; for example, 47% of species that were initially listed as special concern deteriorated between assessments. After receiving an at-risk assessment by COSEWIC, a species is considered for listing under the federal Species at Risk Act (SARA, which is the primary national tool that mandates protection for at-risk species. We examined whether SARA-listing was associated with improved COSEWIC assessment outcomes relative to unlisted species. Of 305 species that had multiple assessments and were SARA-listed, 221 were listed at a level that required identification and protection of critical habitat; however, critical habitat was fully identified for only 56 of these species. We suggest that the Canadian government should formally identify and protect critical habitat, as is required by existing legislation. In addition, our finding that at-risk species in Canada rarely recover leads us to recommend that every effort be made to actively prevent species from becoming at-risk in the first place.

  4. A Au nanoparticle-incorporated sponge as a versatile transmission surface-enhanced Raman scattering substrate.

    Science.gov (United States)

    Shin, Kayeong; Chung, Hoeil

    2015-08-07

    We report a sponge-based transmission surface-enhanced Raman scattering (TSERS) substrate that combines the bulk sampling capabilities of a transmission measurement to improve the quantitative representation of sample concentration with several sponge properties useful for analysis such as fast sample uptake, easy sample enrichment, and a stable polymeric structure. Among nine commercially available sponges made of different materials, a melamine sponge was ultimately selected for this study because it provided the fastest sample uptake and a low background Raman signal. Simultaneously, the amino groups and three-nitrogen hybrid rings in its structure could easily hold Au nanoparticles (AuNPs) inside the sponge. AuNP-incorporated sponges (AuNP sponges) were prepared by simply soaking a melamine sponge in a AuNP solution; these sponges were initially used to measure 4-nitrobenzenethiol (4-NBT) samples with different concentrations in order to evaluate their ability as TSERS substrates. The intensities of the 4-NBT peaks clearly varied according to changes in the concentration, and the relative standard deviation (RSD) of the peak intensity estimated by the measurements of five independently prepared AuNP sponges was 10.0%. Sample enrichment was easily completed by repeated suctioning of the sample into the AuNP sponges followed by depletion of the solvent, so three-time enrichment doubled the intensity. Furthermore, paraquat samples were prepared in diverse matrices (de-ionized water, tap water, river water, and orange juice) and measured using the AuNP sponges. The paraquat peaks were clearly observed from these samples and their peak intensities became smaller with the increased compositional complexity of the matrices. Our overall results demonstrate that the TSERS sponge substrates are easy to prepare and practically versatile for SERS analysis of diverse samples.

  5. Canada-U.S. Relations

    Science.gov (United States)

    2006-05-01

    Canada CRS-8 20 “Spend More On Military, U.S. Envoy Urges Ottawa.” Toronto Star. Feb. 25, 2004. 21 “Canada’s Flying Coffins .” Peter Newman...introduction of alien species of aquatic life may disturb the ecological balance and endanger fishing in Lake Winnipeg, into which the Red River empties...have been under review. The two countries have continued the long-standing debate over the ecological impact of possible development in Alaska’s

  6. Et pourquoi pas au CERN ?

    CERN Multimedia

    Staff Association

    2015-01-01

    Télétravail ou travail à distance, aménagement des horaires de travail et autres évolutions favorables à un meilleur équilibre vie privée et vie professionnelle sont adoptés par nombre d’entreprises et d’organisations !   Rendu possible grâce au développement de nouvelles technologies dont Internet, le travail à distance séduit de plus en plus de personnels, ainsi que de plus en plus de sociétés qui y trouvent des avantages en matière de gestion de l’espace, de sécurité (moins de trajets domicile-entreprise), de développement durable (moins de pollution), de motivation et de bien-être de leurs personnels. Les horaires aménagés, voire les « core-hours1 », sont également des pratiques de plus e...

  7. Comparative efficiencies of photothermal destruction of malignant cells using antibody-coated silica-Au nanoshells, hollow Au/Ag nanospheres and Au nanorods

    Energy Technology Data Exchange (ETDEWEB)

    Cheng, Fong-Yu; Chen, Chen-Tai; Yeh, Chen-Sheng, E-mail: csyeh@mail.ncku.edu.t [Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan (China)

    2009-10-21

    Three Au-based nanomaterials (silica-Au nanoshells, hollow Au/Ag nanospheres and Au nanorods) were evaluated for their comparative photothermal efficiencies at killing three types of malignant cells (A549 lung cancer cells, HeLa cervix cancer cells and TCC bladder cancer cells) using a CW NIR laser. Photodestructive efficiency was evaluated as a function of the number of nanoparticles required to destroy the cancer cells under 808 nm laser wavelength at fixed laser power. Of the three nanomaterials, silica/Au nanoshells needed the minimum number of particles to produce effective photodestruction, whereas Au nanorods needed the largest number of particles. Together with the calculated photothermal conversion efficiency, the photothermal efficiency rankings are silica-Au nanoshells > hollow Au/Ag nanospheres > Au nanorods. Additionally, we found that HeLa cells seem to present better heat tolerance than the other two cancer cell lines.

  8. Photovoltage responses of graphene-Au heterojunctions

    Science.gov (United States)

    Li, Kai; Ying, Xiangxiao; Wang, Juan; Wang, Jun; Jiang, Yadong; Liu, Zhijun

    2017-10-01

    As an emerging 2D material, graphene's several unique properties, such as high electron mobility, zero-bandgap and low density of states, present new opportunities for light detections. Here, we report on photovoltage responses of graphene-Au heterojunctions, which are made of monolayer graphene sheets atop Au electrodes designed as finger-shape and rectangle-shape, respectively. Besides confirming the critical role of space charge regions located at the graphene-Au boundary, photovoltage responses are measured in the visible to infrared spectral region with a cut-off wavelength at about 980 nm, which is likely imposed by the Pauli blocking of interband transition in the contact-doped graphene. The photoresponsivity is shown to decrease with increasing wavelength. A band diagram of the graphene-Au heterojunction is proposed to understand the photoresponse mechanism.

  9. Intense fluorescence of Au 20

    Energy Technology Data Exchange (ETDEWEB)

    Yu, Chongqi; Harbich, Wolfgang; Sementa, Luca; Ghiringhelli, Luca; Apra, Edoardo; Stener, Mauro; Fortunelli, Alessandro; Brune, Harald

    2017-08-21

    Ligand-protected Au clusters are non-bleaching fluorescence markers in bio- and medical applications. We show that their fluorescence is an intrinsic property of the Au cluster itself. We find a very intense and sharp fluorescence peak located at λ =739.2 nm (1.68 eV) for Au20 clusters in a Ne matrix held at 6 K. The fluorescence reflects the HOMO-LUMO diabatic bandgap of the cluster. The cluster shows a very rich absorption fine structure reminiscent of well defined molecule-like quantum levels. These levels are resolved since Au20 has only one stable isomer (tetrahedral), therefore our sample is mono-disperse in cluster size and conformation. Density-functional theory (DFT) and time-dependent DFT calculations clarify the nature of optical absorptionand predict both main absorption peaks and intrinsic fluorescence in good agreement with experiment.

  10. PHENIX results on jets in d + Au

    Science.gov (United States)

    Hanks, J. Ali

    2016-12-01

    We present recently published results [A. Adare, et al., arxiv:arXiv:1509.04657] on fully reconstructed R=0.3 anti-kt jets measured in p+p and d+Au collisions at 200 GeV center-of-mass energy. The jet yields for four centrality classes along with the p+p reference are presented, as well as both the minimum bias RdAu and centrality dependent RdAu and RCP. We find that while the minimum bias RdA is consistent with unity, providing a strong constraint on models including cold-nuclear-matter effects or energy loss in small systems, the centrality dependent RdAu show a striking variation which presents a challenge to models attempting to describe the interplay between soft and hard processes in these systems.

  11. 22 CFR 62.31 - Au pairs.

    Science.gov (United States)

    2010-04-01

    ....31 Au pairs. (a) Introduction. This section governs Department of State-designated exchange visitor... requirements set forth at § 62.10 sponsors shall: (1) Inform all host families of the philosophy, rules, and...

  12. Renforcement de la justice sexospécifique au Nigeria : regard sur la ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Au Nigeria, un large éventail de facteurs historiques, politiques et culturels tantôt entravent, tantôt favorisent une participation citoyenne des femmes respectueuse de leurs droits. Cette subvention permettra aux responsables de l'Initiative for Women's Studies du Nigeria d'entreprendre, en collaboration avec cinq ...

  13. Mise au point de l'outil de diagnostic PALM Plus pour le Malawi ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Initiative sur les systèmes de santé en Afrique · L'utilité de la télémédecine au Mali · Des services en santé mentale accessibles aux Kényans vivant en milieu rural. Photo de droite : Dignitas International Clement Khondiwa anime une séance de ...

  14. Self-breaking in planar few-atom Au constrictions for nanometer-spaced electrodes

    NARCIS (Netherlands)

    O'Neill, K.; Osorio, E.A.; Van der Zant, H.S.J.

    2007-01-01

    The authors present results on electromigrated Au nanojunctions broken near the conductance quantum of 77.5??S. At room temperature it is found that wires, initially narrowed by an actively-controlled electromigration technique down to a few conductance quanta, continue to narrow after removing the

  15. Electron emission yields from boron-like Ar ions impinging on Au(100)

    NARCIS (Netherlands)

    Bodewits, E.; Bekker, H.; de Nijs, A. J.; Hoekstra, R.; Winklehner, D.; Daniel, B.; Kowarik, G.; Dobes, K.; Aumayr, F.

    2011-01-01

    Using a new experimental station to be installed at the HITRAP facility at GSI we studied electron emission yields of Ar13+ ions impinging on a clean Au(1 00) surface. By taking data under different incidence angles and at different initial kinetic energies, contributions from kinetic and potential

  16. 78 FR 16493 - ExxonMobil Canada Energy, Flint Hills Resources Canada, LP, Imperial Oil, NOVA Chemical (Canada...

    Science.gov (United States)

    2013-03-15

    ... State Canada, Inc., Phillips 66 Canada ULC, St. Paul Park Refining Co. LLC, Suncor Energy Marketing, Inc., United Refining Company v. Enbridge Energy, Limited Partnership; Notice of Complaint Take notice that on..., Suncor Energy Marketing, Inc., and United Refining Company (Complainants) filed a formal complaint...

  17. Unravelling Thiol’s Role in Directing Asymmetric Growth of Au Nanorod–Au Nanoparticle Dimers

    KAUST Repository

    Huang, Jianfeng

    2015-12-15

    Asymmetric nanocrystals have practical significance in nanotechnologies but present fundamental synthetic challenges. Thiol ligands have proven effective in breaking the symmetric growth of metallic nanocrystals but their exact roles in the synthesis remain elusive. Here, we synthesized an unprecedented Au nanorod-Au nanoparticle (AuNR-AuNP) dimer structure with the assistance of a thiol ligand. On the basis of our experimental observations, we unraveled for the first time that the thiol could cause an inhomogeneous distribution of surface strains on the seed crystals as well as a modulated reduction rate of metal precursors, which jointly induced the asymmetric growth of monometallic dimers. © 2015 American Chemical Society.

  18. Enantioselective separation on chiral Au nanoparticles.

    Science.gov (United States)

    Shukla, Nisha; Bartel, Melissa A; Gellman, Andrew J

    2010-06-30

    The surfaces of chemically synthesized Au nanoparticles have been modified with d- or l-cysteine to render them chiral and enantioselective for adsorption of chiral molecules. Their enantioselective interaction with chiral compounds has been probed by optical rotation measurements during exposure to enantiomerically pure and racemic propylene oxide. The ability of optical rotation to detect enantiospecific adsorption arises from the fact that the specific rotation of polarized light by (R)- and (S)-propylene oxide is enhanced by interaction with Au nanoparticles. This effect is related to previous observations of enhanced circular dichroism by Au nanoparticles modified by chiral adsorbates. More importantly, chiral Au nanoparticles modified with either d- or l-cysteine selectively adsorb one enantiomer of propylene oxide from a solution of racemic propylene oxide, thus leaving an enantiomeric excess in the solution phase. Au nanoparticles modified with l-cysteine (d-cysteine) selectively adsorb the (R)-propylene oxide ((S)-propylene oxide). A simple model has been developed that allows extraction of the enantiospecific equilibrium constants for (R)- and (S)-propylene oxide adsorption on the chiral Au nanoparticles.

  19. Apprentissages techniques : L'apprentissage au CERN

    CERN Document Server

    2004-01-01

    APPRENTISSAGES TECHNIQUES GESTION ET DEVELOPPEMENT DU PERSONNEL HR/PMD L'APPRENTISSAGE AU CERN pour les professions d'électronicien(ne) et de laborantin(e) en physique L'apprentissage au CERN est régi par les lois, règlements et contrats en vigueur dans le Canton de Genève. En cas de réussite à l'examen de fin d'apprentissage, les apprentis obtiennent le Certificat Fédéral de Capacité Suisse (CFC). 7 places au total sont ouvertes au recrutement pour les deux professions. L'apprentissage dure 4 ans. Minima requis pour faire acte de candidature : • avoir au moins 15 ans et moins de 21 ans à la date de début de l'apprentissage • avoir terminé la scolarité obligatoire, au minimum 9ème du Cycle d'orientation genevois (3ème en France) • être ressortissant d'un pays membre du CERN (Allemagne, Autriche, Belgiqu...

  20. Canada's World : a Deliberative Dialogue | IDRC - International ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Call for proposals for the Joint Canada-Israel Health Research Program 2018 competition. IDRC, the Israel Science Foundation, the Azrieli Foundation, and the Canadian Institutes of Health Research announce the call for proposals for the fourth round of the Joint Canada-Israel Health... View moreCall for proposals for the ...

  1. Canada's Changing Geography of Jobs and Trade.

    Science.gov (United States)

    Kilgour, David

    1998-01-01

    Discusses the impact of globalization on the jobs and trade of Canada. Emphasizes new relationships with countries in Latin America and Africa. Notes the types of trade that Canada enjoys with these two areas and encourages expansion of business into them. (DSK)

  2. Mexico-Canada Knowledge Translation Partnership | IDRC ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Canada-Latin America and Caribbean Zika Virus Research Program. A new funding opportunity on Zika virus is responding to the virus outbreak and the health threat it represents for the affected populations in the hardest hit countries in Latin America and the... View moreCanada-Latin America and Caribbean Zika Virus ...

  3. The OECD Reports on Canada's Educational System

    Science.gov (United States)

    Findlay, P.

    1976-01-01

    Extracts from a 1975 study undertaken by the organization for Economic Cooperation and Development (OECD) on the state of education in Canada is presented. The extracts focus on the vocational technical field and call for a vigorous and creative rethinking in the practical and technical education of Canada's youth. (Author/EC)

  4. Fully Cationized Gold Clusters: Synthesis of Au25(SR+)18.

    Science.gov (United States)

    Ishida, Yohei; Narita, Kunihiro; Yonezawa, Tetsu; Whetten, Robert L

    2016-10-06

    Although many thiolate-protected Au clusters with different numbers of Au atoms and a variety of thiolate ligands have been synthesized, to date there has been no report of a fully cationized Au cluster protected with cationic thiolates. Herein, we report the synthesis of the first member of a new series of thiolate-protected Au cluster molecules: a fully cationized Au 25 (SR + ) 18 cluster.

  5. 100-MeV proton beam intensity measurement by Au activation analysis using {sup 197}Au(p, pn){sup 196}Au and {sup 197}Au(p, p3n){sup 194}Au reactions

    Energy Technology Data Exchange (ETDEWEB)

    Mokhtari Oranj, Leila [Division of Advanced Nuclear Engineering, POSTECH, Pohang 37673 (Korea, Republic of); Jung, Nam-Suk; Oh, Joo-Hee [Pohang Accelerator Laboratory, POSTECH, Pohang 37673 (Korea, Republic of); Lee, Hee-Seock, E-mail: lee@postech.ac.kr [Pohang Accelerator Laboratory, POSTECH, Pohang 37673 (Korea, Republic of)

    2016-05-15

    The proton beam intensity of a 100-MeV proton linac at the Korea Multi-purpose Accelerator Complex (KOMAC) was measured by an Au activation analysis using {sup 197}Au(p, pn){sup 196}Au and {sup 197}Au(p, p3n){sup 194}Au reactions to determine the accuracy and precision of beam intensity measurement using Gafchromic film dosimetry method. The target, irradiated by 100-MeV protons, was arranged in a stack consisting of Au, Al foils and Pb plates. The yields of produced radio-nuclei in Au foils were obtained by gamma-ray spectroscopy. The FLUKA code was employed to calculate the energy spectrum of protons onto the front surface of Au foils located at three different depth points of the target and also to investigate the condition of incident beam on the target. A good agreement was found between the beam intensity measurements using the activation analysis method at three different depth points of the target. An excellent agreement was also observed between the beam intensity measurements using the Au activation analysis method and the dosimetry method using Gafchromic film.

  6. Health Consequences to Immigrant Family Caregivers in Canada

    Directory of Open Access Journals (Sweden)

    Suwal, Juhee Varacharya

    2010-01-01

    Full Text Available AbstractThis study revisited the “double jeopardy” hypothesis in terms of the health ofimmigrant family caregivers. It also investigated the effect of “reciprocity”(feeling of giving back something on the health of family caregivers. TheGeneral Social Survey 2002 Cycle 16 data were analyzed using χ2-test andLogistic regressions. About 16% of immigrants and 13.6% of non-immigrantssaid that their health was negatively affected as a result of caregiving.Immigrant family caregivers were three times more likely than non-immigrantsto report a health consequence. Reciprocity played a big role in this outcome.Given the fact that an increasing number of culturally diverse immigrants enterCanada every year and that the immigrant population is aging, more caregiverswill be in demand. Policy makers need to find ways to keep immigrantcaregivers healthy so that quality care can be given to immigrant older adultsand also for maintaining an overall healthy Canada.RésuméCette étude réexamine l'hypothèse de «non bis in idem» dans le contexte de lasanté des aidantes et aidants membres de familles immigrantes. Elle étudie aussil'effet de «réciprocité» (le sentiment de rendre quelque chose sur la santé desaidantes et aidants membres de la famille. Les données de l'Enquête socialegénérale 2002, cycle 16 ont été analysées à l'aide du test du χ² et de régressionslogistiques. À peu près 16% des immigrants et 13.6% des non-immigrantes ontreporté que leur santé avait été négativement affectée par leur dispensation desoins. Les aidantes et aidants membres de familles immigrantes avaient troisfois plus de chance de reporter une conséquence sur leur santé que ceux desfamilles non-immigrantes. La réciprocité jouait un rôle important dans cerésultat. Quand on considère qu'un nombre croissant d'immigrants issus decultures diverses entre au Canada chaque année et que la populationimmigrante vieillit, il est clair que plus en plus

  7. Writing requirements across nursing programs in Canada.

    Science.gov (United States)

    Andre, Jo-Anne D; Graves, Roger

    2013-02-01

    The emphasis on scholarship in nursing, demands for evidence-based practice, and attention to writing have raised the profile of academic writing within nursing curricula. This article provides a comprehensive review of English and writing course requirements across 81 English-language baccalaureate nursing programs in Canada. The data were gathered from a review of nursing programs and curriculum information from university and college Web sites. Of the 81 programs, 39 (48.1%) require neither an English literature course nor a writing course, 15 (18.5%) require an English literature course, and 32 (39.5%) require a writing course, including five programs that require a discipline-specific writing course. Discipline-specific writing courses appear to be useful adjuncts to writing-across-the-curriculum initiatives in nursing and will help students to develop the research and writing skills needed to succeed both academically and in a career in which nursing scholarship and evidence-informed practice are increasingly valued and expected. Copyright 2013, SLACK Incorporated.

  8. Au-delà du vecteur | CRDI - Centre de recherches pour le ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    30 mai 2011 ... Deux projets ont étudié le paludisme, dans le bouclier guyanais, au Venezuela, et en Amazonie équatorienne, tandis qu'un troisième s'est penché sur le paludisme et la riziculture irriguée au Pérou. Enfin, le septième projet a porté sur la dengue dans la ville de Cali, en Colombie. L'initiative a donné lieu à ...

  9. Toward hybrid Au nanorods @ M (Au, Ag, Pd and Pt) core-shell heterostructures for ultrasensitive SERS probes

    Science.gov (United States)

    Xie, Xiaobin; Gao, Guanhui; Kang, Shendong; Lei, Yanhua; Pan, Zhengyin; Shibayama, Tamaki; Cai, Lintao

    2017-06-01

    Being able to precisely control the morphologies of noble metallic nanostructures is of essential significance for promoting the surface-enhanced Raman scattering (SERS) effect. Herein, we demonstrate an overgrowth strategy for synthesizing Au @ M (M = Au, Ag, Pd, Pt) core-shell heterogeneous nanocrystals with an orientated structural evolution and highly improved properties by using Au nanorods as seeds. With the same reaction condition system applied, we obtain four well-designed heterostructures with diverse shapes, including Au concave nanocuboids (Au CNs), Au @ Ag crystalizing face central cube nanopeanuts, Au @ Pd porous nanocuboids and Au @ Pt nanotrepangs. Subsequently, the exact overgrowth mechanism of the above heterostructural building blocks is further analysed via the systematic optimiziation of a series of fabrications. Remarkably, the well-defined Au CNs and Au @ Ag nanopeanuts both exhibit highly promoted SERS activity. We expect to be able to supply a facile strategy for the fabrication of multimetallic heterogeneous nanostructures, exploring the high SERS effect and catalytic activities.

  10. Leading Hadron Production in d+Au and 3He+Au collisions in the PHENIX experiment

    Science.gov (United States)

    Sakaguchi, Takao; Phenix Collaboration

    2017-08-01

    Neutral pions have been measured in 3He+Au collisions at √{sNN } = 200 GeV up to 20 GeV/c in the RHIC Year-2014 run. The nuclear modification factor RAA was measured and compared with that from d+Au collisions. The integrated RAA as a function of Npart was calculated for d+Au, 3He+Au and Au+Au collisions at √{sNN } = 200 GeV, and found to converge for Npart > 12, while a clear system ordering RdAu >RHeAu >RAuAu was observed for Npart > 12. The fractional momentum loss for the most central 3He+Au collisions was also estimated.

  11. Brazilian Nanotechnology Initiative

    Science.gov (United States)

    Fazzio, Adalberto

    2015-03-01

    In Brazil there is intense research activity in nanotechnology, most of these developed in universities and research institutes. The Brazilian Nanotechnology Initiative (BNI) aims to integrate government actions to promote the competitiveness of the Brazilian industry. This initiative is founded on support for research and development in the laboratories of the National Laboratories for Nanotechnology (SisNANO), starting from an improvement in infrastructure and opening of laboratories for users of academia and business, promoting interaction and transfer knowledge between academia and business. Country currently has 26 thematic networks of nanotechnology, 16 -Virtual-National Institutes of Technology, seven National- Laboratories and 18 Associate Laboratories, which comprise the SisNANO. Seeking to expand and share governance with other government actors, the Interministries Committee for Nanotechnology was set up, composed of 10 ministries, and has the task of coordinating the entire program of the Federal Government Nanotechnology.Cooperation activities are an important part of BNI. Currently Brazil has cooperation programs with U.S., China, Canada and European Union among others. Recently, Brazil decided to join the European NanoReg program where 60 research groups are joining efforts to provide protocols and standards that can help regulatory agencies and governments.

  12. INDRA at GSI; INDRA au GSI

    Energy Technology Data Exchange (ETDEWEB)

    Bougault, R.; Bocage, F.; Durand, D.; Lopez, O.; Steckmeyer, J.C.; Tamain, B.; Vient, E. [Lab. de Physique Corpusculaire, Caen Univ., 14 (France); Collaboration INDRA: IPN-Orsay, DAPNIA-Saclay, SUBATECH-Nantes, IPN- Lyon, GANIL-Caen

    1997-12-31

    In connection to the decision of installing the INDRA detector by the SIS synchrocyclotron at GSI (Darmstadt, Germany) the report presents the tasks taken into account by the LPC-Caen. These refer to the detector displacement and (mechanical) installation at GSI, the tests before beam (i.e. electronics acquisition software, detectors, etc.) as well as the data acquisition and processing. The physical pro-arguments mention the possibility of disposing of heavy ion beams in a range from 50 MeV to several GeV/nucleon so extending the study of multifragmentation done at GANIL between 30 and 90 MeV/nucleon. More specific, the scientific program of INDRA at GSI inserts studies between those done at around Fermi energy, were the reaction mechanisms are of type of deep inelastic scattering/incomplete fusion, and the studies in the relativistic energy domain where the individual properties of nucleons and transparency of nuclear matter implies mechanisms of the participant-spectator type (fire-ball creation). Also mentioned as fields of extensive studies are: the multifragmentation and its fundamental relation with the nuclear matter equation of state, the role of reaction dynamics in the appearance of collective effects of the radial flow type and its relations with the nuclear compressibility and phase transitions and the thermodynamics of nuclear matter. It appeared that the heavy systems Xe + Sn and Au + Au are the best compromise for the different topics to be approached. The bombarding energies extend from 50 to 150 MeV/nucleon. The report ends with the table giving for six heavy systems (Xe + Sn, Au + Au, C + Au, Ar + Au and P + Au) the required bombarding energies 15 refs.

  13. Paint removal activities in Canada

    Science.gov (United States)

    Foster, Terry

    1993-03-01

    Paint removal activities currently under way in Canada include: research and development of laser paint stripping; development and commercialization of a new blasting medium based on wheat starch; commercialization of a new blasting medium and process using crystalline ice blasting for paint removal and surface cleaning; and the development of automated and robotic systems for paint stripping applications. A specification for plastic media blasting (PMB) of aircraft and aircraft components is currently being drafted by NDHQ for use by the Canadian Armed Forces (CAF) and contractors involved in coating removal for the CAF. Defense Research Establishment Pacific (DREP) is studying the effects of various blast media on coating removal rates, and minimizing the possibility of damage to substrates other than aluminum such as graphite epoxy composite and Kevlar. The effects of plastic media blasting on liquid penetrant detection of fatigue cracks is also under investigation.

  14. Forest insect pests in Canada

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-11-01

    The papers presented in this book cover the range of forest insect pest management activities in Canada. The first section contains papers on the current status of insect pests by region, including data on insect populations and extent of defoliation caused by the insect. The next section covers pest management technology, including the use of insecticides, insect viruses, fungal pathogens, growth regulators, antifeedants, pheromones, natural predators, and aerial spraying. The third section contains papers on the application of technology and equipment for forest pest control, and includes papers on the impacts of insecticides on the forest environment. The fourth section describes operational control programs by province. The final paper presents future strategies for the management of forest pests. An author index is included.

  15. The extraction characteristic of Au-Ag from Au concentrate by thiourea solution

    Science.gov (United States)

    Kim, Bongju; Cho, Kanghee; On, Hyunsung; Choi, Nagchoul; Park, Cheonyoung

    2013-04-01

    The cyanidation process has been used commercially for the past 100 years, there are ores that are not amenable to treatment by cyanide. Interest in alternative lixiviants, such as thiourea, halogens, thiosulfate and malononitrile, has been revived as a result of a major increase in gold price, which has stimulated new developments in extraction technology, combined with environmental concern. The Au extraction process using the thiourea solvent has many advantages over the cyanidation process, including higher leaching rates, faster extraction time and less than toxicity. The purpose of this study was investigated to the extraction characteristic of Au-Ag from two different Au concentrate (sulfuric acid washing and roasting) under various experiment conditions (thiourea concentration, pH of solvent, temperature) by thiourea solvent. The result of extraction experiment showed that the Au-Ag extraction was a fast extraction process, reaching equilibrium (maximum extraction rate) within 30 min. The Au-Ag extraction rate was higher in the roasted concentrate than in the sulfuric acid washing. The higher the Au-Ag extraction rate (Au - 70.87%, Ag - 98.12%) from roasted concentrate was found when the more concentration of thiourea increased, pH decreased and extraction temperature increased. This study informs extraction method basic knowledge when thiourea was a possibility to eco-/economic resources of Au-Ag utilization studies including the hydrometallurgy.

  16. Multistep production of eta and hard pi(0) mesons in subthreshold Au-Au collisions

    NARCIS (Netherlands)

    Appenheimer, M; Averbeck, R; Charbonnier, Y; Diaz, J; Doppenschmidt, A; Hejny, [No Value; Hlavac, S; Holzmann, R; Kugler, A; Lohner, H; Marin, A; Metag, [No Value; Novotny, R; Ostendorf, RW; Pleskac, R; Schubert, A; Schutz, Y; Simon, RS; Stratmann, R; Stroher, H; Tlusty, P; Vogt, PH; Wagner, [No Value; Weiss, J; Wilschut, HW; Wissmann, F; Wolf, M

    1998-01-01

    The neutral pi(o) and eta mesons are studied in Au-197-Au-197 collisions at an incident energy of 800A MeV, substantially below the threshold for eta production in N-N collisions. While the gross pi(o) multiplicity increases almost linearly with the number of participant nucleons, the multiplicities

  17. Au/ZnO nanoarchitectures with Au as both supporter and antenna of visible-light

    Energy Technology Data Exchange (ETDEWEB)

    Liu, Tianyu; Chen, Wei; Hua, Yuxiang; Liu, Xiaoheng, E-mail: xhliu@mail.njust.edu.cn

    2017-01-15

    Highlights: • An inversed Au/ZnO nanostructure was fabricated with ZnO loaded onto Au. • The Au/ZnO nanocomposites showed enhanced properties in visible-light photocatalysis. • The SPR effect of Au was considered important for visible-light photocatalysis. - Abstract: In this paper, we fabricate Au/ZnO nanostructure with smaller ZnO nanoparticles loaded onto bigger gold nanoparticles via combining seed-mediated method and sol-gel method. The obtained Au/ZnO nanocomposites exhibit excellent properties in photocatalysis process like methyl orange (MO) degradation and oxidative conversion of methanol into formaldehyde under visible light irradiation. The enhanced properties were ascribed to the surface plasmon resonance (SPR) effect of Au nanoparticles, which could contribute to the separation of photo-excited electrons and holes and facilitate the process of absorbing visible light. This paper contributes to the emergence of multi-functional nanocomposites with possible applications in visible-light driven photocatalysts and makes the Au/ZnO photocatalyst an exceptional choice for practical applications such as environmental purification of organic pollutants in aqueous solution and the synthesis of fine chemicals and intermediates.

  18. Using supported Au nanoparticles as starting material for preparing uniform Au/Pd bimetallic catalysts

    Energy Technology Data Exchange (ETDEWEB)

    Villa, Alberto [Universita di Milano, Italy; Prati, Laura [Universita di Milano, Italy; Su, Dangshen [Fritz Haber Institute of the Max Planck Society, Berlin, Germany; Wang, Di [Fritz Haber Institute of the Max Planck Society, Berlin, Germany; Veith, Gabriel M [ORNL

    2010-01-01

    One of the best methods for producing bulk homogeneous (composition) supported bimetallic AuPd clusters involves the immobilization of a protected Au seed followed by the addition of Pd. This paper investigates the importance of this gold seed in controlling the resulting bimetallic AuPd clusters structures, sizes and catalytic activities by investigating three different gold seeds. Uniform Au-Pd alloy were obtained when a steric/electrostatic protecting group, poly(vinyl alcohol) (PVA), was used to form the gold clusters on activated carbon (AC). In contrast Au/AC precursors prepared using Au nanoparticles with only electrostatic stabilization (tetrakis(hydroxypropyl)phosphonium chloride (THPC)), or no stabilization (magnetron sputtering) produced inhomogeneous alloys and segregation of the gold and palladium. The uniform alloyed catalyst (Pd{at}Au{sub PVA}/AC) is the most active and selective catalyst, while the inhomogenous catalysts are less active and selective. Further study of the PVA protected Au clusters revealed that the amount of PVA used is also critical for the preparation of uniform alloyed catalyst, their stability, and their catalytic activity.

  19. Directed flow of antiprotons in Au+Au collisions at AGS

    OpenAIRE

    Barrette, J.; Bellwied, R.; Bennett, S.; Bersch, R.; Braun-Munzinger, P.; Chang, W. C.; Cleland, W. E.; Clemen, M.; Cole, J.; Cormier, T. M.; Dai, Y.; David, G.; Dee, J.; Dietzsch, O.; Drigert, M.

    2000-01-01

    Directed flow of antiprotons is studied in Au+Au collisions at a beam momentum of 11.5A GeV/c. It is shown that antiproton directed flow is anti-correlated to proton flow. The measured transverse momentum dependence of the antiproton flow is compared with predictions of the RQMD event generator.

  20. Stability of gold cages (Au16 and Au17) at finite temperature

    Indian Academy of Sciences (India)

    2015-11-27

    Nov 27, 2015 ... We have employed ab initio molecular dynamics to investigate the stability of the smallest gold cages, namely Au16 and Au17, at finite temperatures. First, we obtain the ground state structure along with at least 50 distinct isomers for both the clusters. This is followed by the finite temperature simulations of ...

  1. Charged particle density distributions in Au·Au collisions at ...

    Indian Academy of Sciences (India)

    Charged particle pseudorapidity distributions have been measured in Au·Au collisions using the BRAHMS ... Relativistic heavy-ion collisions; charged hadron production; pseudorapidity distribu- tions; centrality .... the predictions of two different theoretical models: (i) the high density gluon saturation model of Kharzeev and ...

  2. Low-temperature solution synthesis of the non-equilibrium ordered intermetallic compounds Au3Fe, Au3Co, and Au3Ni as nanocrystals.

    Science.gov (United States)

    Vasquez, Yolanda; Luo, Zhiping; Schaak, Raymond E

    2008-09-10

    Alloys and intermetallic compounds of Au with the 3d transition metals Fe, Co, and Ni are nonequilibrium phases that have many useful potential applications as catalytic, magnetic, optic, and multifunctional magneto-optic materials. However, the atomically ordered Au-M (M = Fe, Co, Ni) intermetallics are particularly elusive from a synthetic standpoint. Here we report the low-temperature solution synthesis of the L12 (Cu3Au-type) intermetallic compounds Au3Fe, Au3Co, and Au3Ni using n-butyllithium as a reducing agent. Reaction pathway studies for the Au3Co system indicate that Au nucleates first, followed by Co incorporation to form the intermetallic. The nonequilibrium intermetallic nanocrystals have been characterized by powder XRD, TEM, EDS, selected area electron diffraction, and nanobeam electron diffraction, which collectively confirm the compositions and superlattice structures.

  3. Canada's population: growth and dualism.

    Science.gov (United States)

    Beaujot, R P

    1978-04-01

    In Canada the current 1.3% population growth rate is causing some concern. Those concerned argue that such a rate of growth in combination with high levels of consumption could jeopardize the country's resource base and its comfortable style of living. Many Canadians are questioning high levels of immigration, for now that the fertility level is below replacement level, net immigration contributes substantially to population growth (over 1/3 in 1976). The growing proportion of non-Europeans among recent immigrants is causing resentment, and, in a tight job market, immigrants are regarded as threats to the World War 2 baby boom cohort who are now at working ages. The baby boom generation also puts stress on housing and health services, and it will increase the need for pension checks as it ages. Although French fertility is no longer high and immigration is no longer dominated by the British, the French group's 200-year struggle to preserve its identity continues on in the current effort of the Quebec government to enforce the use of French language by law within that province. Geography and climate dictate another demographic fact that divides the country and pervades its history. In addition to intense regionalism, uneven population distribution is responsible for 2 other concerns: the rapid growth of several already large cities and depopulation of many small communities. Focus in this discussion is on Canada's population growth in the past and as projected for the future, historical and current fertility, mortality and immigration trends, the search for a new immigration policy, the impact of the baby boom generation on the population's age structure and the problems this creates, and recent shifts in population distribution and in the country's ethnic and linguistic makeup. The population policy proposals evolved thus far involve to a great extent the use of immigration as a lever for achieving given population objectives.

  4. Contributions of electron microscopy to understanding CO adsorption on powder Au/ceria-zirconia catalysts.

    Science.gov (United States)

    Cíes, José María; Delgado, Juan José; López-Haro, Miguel; Pilasombat, Ratchaneekorn; Pérez-Omil, José Antonio; Trasobares, Susana; Bernal, Serafin; Calvino, José Juan

    2010-08-16

    The influence of the highly dispersed gold phase on the CO-support interaction occurring in two 2.5 wt % Au/Ce(0.62)Zr(0.38)O(2) catalysts with medium (Au/CZ-MD) and high (Au/CZ-HD) metal dispersion is quantitatively assessed. For this purpose, we have followed an approach in which high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), computer modelling, volumetric adsorption and FTIR spectroscopy studies are combined. This approach has already been fruitfully applied to the investigation of the specific CO-metal adsorption in Au/ceria-zirconia catalysts. As deduced from the experimental studies reported herein, the presence of gold dramatically increases the amount of CO strongly chemisorbed on the support. Moreover, this amount is sensitive to the metal dispersion, thus suggesting the occurrence of a mechanism in which the CO molecules that are initially adsorbed on the gold nanoparticles are further transferred to the support by means of a spillover process. An annular model is proposed for the growth of the CO phase adsorbed on the ceria-zirconia mixed oxide in the presence of Au. By assuming this model, we have estimated the width of the annulus, Delta r, of the adsorbed CO grown around the Au nanoparticles in Au/CZ-MD and Au/CZ-HD catalysts. This value is found to be very close to Delta r approximately 2 nm in both cases, the coincidence lending some additional support to the model. To further confirm this proposal, we have investigated the influence of CO pre-adsorption on the D(2)-Au/CZ-MD interaction, at 298 K. As revealed by FTIR spectroscopy, the kinetics of the deuterium spillover is significantly disturbed by the pre-adsorbed CO, which is fully consistent with an annular model for the CO adsorption. We conclude from the global analysis of the results reported here and those already available on CO-Au adsorption that the appropriate combination of nanostructural, computer modelling and chemical techniques is a powerful

  5. Jets and dijets in Au+Au and p+p collisions at RHIC

    Energy Technology Data Exchange (ETDEWEB)

    Hardtke, D.; STAR Collaboration

    2002-12-09

    Recent data from RHIC suggest novel nuclear effects in the production of high p{sub T} hadrons. We present results from the STAR detector on high p{sub T} angular correlations in Au+Au and p+p collisions at {radical}S = 200 GeV/c. These two-particle angular correlation measurements verify the presence of a partonic hard scattering and fragmentation component at high p{sub T} in both central and peripheral Au+Au collisions. When triggering on a leading hadron with p{sub T}>4 GeV, we observe a quantitative agreement between the jet cone properties in p+p and all centralities of Au+Au collisions. This quantitative agreement indicates that nearly all hadrons with p{sub T}>4 GeV/c come from jet fragmentation and that jet fragmentation properties are not substantially modified in Au+Au collisions. STAR has also measured the strength of back-to-back high p{sub T} charged hadron correlations, and observes a small suppression of the back-to-back correlation strength in peripheral collisions, and a nearly complete disappearance o f back-to-back correlations in central Au+Au events. These phenomena, together with the observed strong suppression of inclusive yields and large value of elliptic flow at high p{sub T}, are consistent with a model where high p{sub T} hadrons come from partons created near the surface of the collision region, and where partons that originate or propagate towards the center of the collision region are substantially slowed or completely absorbed.

  6. Café-au-lait Macules and Neurofibromatosis Type 1: A Review of the Literature.

    Science.gov (United States)

    Bernier, Anne; Larbrisseau, Albert; Perreault, Sebastien

    2016-07-01

    The first sign of neurofibromatosis type 1 (NF1) in a child is often the presence of multiple café-au-lait macules. Although previous studies reported that almost individuals with multiple café-au-lait macules will eventually develop NF1 based on clinical criteria, recent studies and clinical observations suggest that a significant percentage of them do not have NF1. We conducted the first systematic review of the literature on the prevalence of definitive NF1 among patients referred for isolated café-au-lait macules, searching more precisely for the proportion of those patients who do not have NF1. Because we now know that the presence of café-au-lait macules and freckling might not distinguish between NF1 and other conditions such as Legius syndrome, definitive NF1 was defined as the presence of café-au-lait macules with or without freckling plus one of the following: Lisch nodules, neurofibroma, plexiform neurofibroma, bone dysplasia, optic pathway glioma, or familial history of NF1. Six articles reported sufficient data to meet our inclusion criteria. Grouping all studies together, we found that 19.5% to 57.1% of all patients with isolated café-au-lait macules did not have a diagnosis of NF1 after follow-up or genetic testing. A significant portion of the patients presenting with isolated café-au-lait macules at initial consultation might not have NF1. Genetic testing could help guide the follow-up of those patients, but further evidence is required to make recommendations. Copyright © 2016 Elsevier Inc. All rights reserved.

  7. Fabrication of Te@Au core-shell hybrids for efficient ethanol oxidation

    Science.gov (United States)

    Jin, Huile; Wang, Demeng; Zhao, Yuewu; Zhou, Huan; Wang, Shun; Wang, Jichang

    2012-10-01

    Using Au nanoparticles to catalyze the oxidation of alcohols has garnered increasing attention due to its potential application in direct alcohol fuel cells. In this research Te@Au core-shell hybrids were fabricated for the catalytic oxidation of ethanol, where the preparation procedure involved the initial production of Te crystals with different microstructures and the subsequent utilization of the Te crystal as a template and reducing agent for the production of Te@Au hybrids. The as-prepared core-shell hybrids were characterized by scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction techniques. Electrochemical measurements illustrate that the hybrids have great electrocatalytic activity and stability toward ethanol oxidation in alkaline media. The enhanced electrocatalytic property may be attributed to the cooperative effects between the metal and semiconductor and the presence of a large number of active sites on the hybrids surface.

  8. Rapidity density distributions in Au+Au and Au+Ag interactions at 11.6 A GeV/c

    Energy Technology Data Exchange (ETDEWEB)

    Nystrand, J.I. [Div. of Cosmic and Subatomic Physis, Lund Univ. (Sweden); Adamovich, M.I.; Aggarwal, M.M.; Alexandrov, Y.A.; Andreeva, N.P.; Anzon, Z.V.; Arora, R.; Avetyan, F.A.; Badyal, S.K.; Basova, E.; Bazarov, I.K.; Bhalla, K.B.; Bhasin, A.; Bhatia, V.S.; Bogdanov, V.G.; Bubnov, V.I.; Burnett, T.H.; Cai, X.; Carshiev, D.A.; Ceitimbetov, A.M.; Chasnikov, I.Y.; Chernova, L.P.; Chernyavsky, M.M.; Eligbaeva, G.Z.; Eremenko, L.E.; Gaitinov, A.S.; Ganssauge, E.R.; Garpman, S.; Gerassimov, S.G.; Graf, C.; Grote, J.; Gulamov, K.G.; Gupta, S.K.; Gupta, V.K.; Jakobsson, B.; Just, L.; Kachroo, S.; Kalyachkina, G.S.; Kanygina, E.K.; Karabova, M.; Kharlamov, S.P.; Kitroo, S.; Krasnov, S.A.; Kumar, V.; Larionova, V.G.; Li, Y.D.; Liu, L.S.; Lokanatan, S.; Lord, J.J.; Lukicheva, N.S.; Luo, S.B.; Maksimkina, T.N.; Mangotra, L.K.; Marutyan, N.A.; Maslennikova, N.V.; Mittra, I.S.; Mookerjee, S.; Musulmanbekov, J.J.; Nasyrov, S.Z.; Navotny, V.S.; Ochs, M.; Orlova, G.I.; Otterlund, I.; Peresadko, N.G.; Petrov, N.V.; Plyushchev, V.A.; Qian, W.Y.; Qin, Y.M.; Raniwala, R.; Raniwala, S.; Rao, N.K.; Roeper, M.; Saidkhanov, N.; Salmanova, N.A.; Sarkisova, L.G.; Sarkisyan, V.R.; Shabratova, G.S.; Shakhova, T.I.; Shpilev, S.N.; Skelding, D.; Soederstrom, K.; Solovjeva, Z.I.; Stenlund, E; Surin, E.L.; Svechnikova, L.N.; Tolstov, K.D.; Tothova, M.; Tretyakova, M.I.; Trofimova, T.P.; Tuleeva, U.; Tursunov, B.P.; Vokal, S.; Vrlakova, J.; Wang, H.Q.; Weng, Z.Q.; Wilkes, R.J.; Xia, Y.L.; Yang, C.B.; Zhang, D.H.; Zheng, P.Y.; Zhokhova, S.I.; Zhou, D.C.; EMU01 Collaboration

    1994-01-03

    Pseudorapidity density distributions of charged particles in heavy-ion collisions have been studied. The results from EMU01 have been compared to the results from the experiments WA80 and E802. The recently obtained pseudorapidity distributions from Au+Au and Au+Ag interactions have been compared to a linear extrapolation from lighter systems. (orig.)

  9. RACIALIZED IN JUSTICE: THE LEGAL AND EXTRA-LEGAL STRUGGLES OF MIGRANT AGRICULTURAL WORKERS IN CANADA

    Directory of Open Access Journals (Sweden)

    Adrian A Smith

    2013-10-01

    Une attention considérable a été accordée à la décision de la Cour suprême du Canada rendue en 2011 dans l’arrêt Fraser, qui portait sur le droit constitutionnel à la liberté d’association des travailleurs agricoles en Ontario. Bien que les interventions tendent à juste titre à critiquer la décision de la Cour rejetant des droits d’association significatifs, il existe une indifférence marquée à l’égard des dimensions racialisées de la décision et de la production de la main-d’œuvre agricole au Canada d’une façon générale. Cependant, bien qu’elle soit nécessaire pour aborder les limites de l’analyse juridique savante et jurisprudentielle contemporaine, l’application des idées de la théorie raciale critique ne tient pas suffisamment compte des particularités de l’exploitation de la main-d’œuvre qui fait partie intégrante du régime canadien de migration temporaire de la main-d’œuvre. Dans le but d’approfondir l’étude de la racialisation, de la main-d’œuvre et du droit au Canada, je place les luttes judiciaires et extrajudiciaires des travailleurs agricoles migrants au sein d’une analyse antiraciste du droit qui tient compte des diverses façons dont la racialisation et le racisme influencent la migration de la main-d’œuvre. La construction du travail migrant fondée sur une catégorie racialisée -- une « nécessité structurelle » dans le cadre de la production agricole -- se fait par l’imposition d’obstacles politico-juridiques organisés par le capitalisme mondial et le système des États nationaux. L’analyse se termine en préconisant l’abandon des approches actuelles relatives à l’étude et à l’exercice du droit du travail, au profit d’un programme transgressif visant à contester ouvertement l’exploitation capitaliste sous toutes ses formes, y compris la réglementation racialisée de la main-d’œuvre agricole migrante.

  10. Synthesis and characterization in AuCu–Si nanostructures

    Energy Technology Data Exchange (ETDEWEB)

    Novelo, T.E., E-mail: tenovelo@hotmail.com [Centro de Investigación en Materiales Avanzados, S.C., Laboratorio Nacional de Nanotecnología, Av. Miguel de Cervantes 120, Complejo Industrial Chihuahua, 31109 Chihuahua, Chihuahua Mexico (Mexico); Amézaga-Madrid, P. [Centro de Investigación en Materiales Avanzados, S.C., Laboratorio Nacional de Nanotecnología, Av. Miguel de Cervantes 120, Complejo Industrial Chihuahua, 31109 Chihuahua, Chihuahua Mexico (Mexico); Maldonado, R.D. [Universidad Anáhuac-Mayab, Carretera Mérida-Progreso Km. 15.5 A.P. 96-Cordemex, CP. 97310 Mérida, Yucatán Mexico (Mexico); Oliva, A.I. [Centro de Investigación y de Estudios Avanzados el IPN Unidad Mérida, Departamento de Física Aplicada, Km 6 Antigua Carretera a Progreso, A.P. 73-Cordemex, 97310 Mérida, Yucatán Mexico (Mexico); Alonzo-Medina, G.M. [Universidad Anáhuac-Mayab, Carretera Mérida-Progreso Km. 15.5 A.P. 96-Cordemex, CP. 97310 Mérida, Yucatán Mexico (Mexico)

    2015-03-15

    Au/Cu bilayers with different Au:Cu concentrations (25:75, 50:50 and 75:25 at.%) were deposited on Si(100) substrates by thermal evaporation. The thicknesses of all Au/Cu bilayers were 150 nm. The alloys were prepared by thermal diffusion into a vacuum oven with argon atmosphere at 690 K during 1 h. X-ray diffraction analysis revealed different phases of AuCu and CuSi alloys in the samples after annealing process. CuSi alloys were mainly obtained for 25:75 at.% samples, meanwhile the AuCuII phase dominates for samples prepared with 50:50 at.%. Additionally, the Au:Cu alloys with 75:25 at.%, produce Au{sub 2}Cu{sub 3} and Au{sub 3}Cu phases. The formed alloys were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS) to study the morphology and the elemental concentration of the formed alloys. - Highlights: • AuCu/Si alloy thin films were prepared by thermal diffusion. • Alloys prepared with 50 at.% of Au produce the AuCuII phase. • Alloys prepared with 75 at.% of Au produce Au{sub 3}Cu and Au{sub 2}Cu{sub 3} phases. • All alloys present diffusion of Si and Cu through the CuSi alloy formation.

  11. Building Regional Capacity for Sustainable Development through an ESD Project Inventory in RCE Saskatchewan, Canada

    Science.gov (United States)

    White, Peta; Petry, Roger

    2011-01-01

    The Regional Centre of Expertise on Education for Sustainable Development in Saskatchewan (RCE Saskatchewan, Canada) is part of the United Nations University RCE Initiative in support of the UN Decade of Education for Sustainable Development (2005-14). With funding from the Government of Saskatchewan's Go Green Fund, RCE Saskatchewan carried out…

  12. Views on and Practices of Integrating Theory and Practice in Teacher Education Programs in Atlantic Canada

    Science.gov (United States)

    Falkenberg, Thomas; Goodnough, Karen; MacDonald, Ronald J.

    2014-01-01

    The need for and lack of integration of theory and practice in initial teacher education programs has been discussed as a central issue for teacher education. This article reports on a study that surveyed university-based teacher educators in Atlantic Canada on their perspectives regarding how theory and practice can be integrated, how they and…

  13. Comparing health system performance assessment and management approaches in the Netherlands and Ontario, Canada

    NARCIS (Netherlands)

    A.R. Tawfik-Shukor (Ali); N.S. Klazinga (Niek); O.A. Arah (Onyebuchi)

    2007-01-01

    textabstractBackground: Given the proliferation and the growing complexity of performance measurement initiatives in many health systems, the Netherlands and Ontario, Canada expressed interests in cross-national comparisons in an effort to promote knowledge transfer and best practise. To support

  14. Comparing health system performance assessment and management approaches in the Netherlands and Ontario, Canada

    NARCIS (Netherlands)

    A.R. Tawfik-Shukor (Ali); N.S. Klazinga (Niek); O.A. Arah (Onyebuchi)

    2007-01-01

    textabstractBackground. Given the proliferation and the growing complexity of performance measurement initiatives in many health systems, the Netherlands and Ontario, Canada expressed interests in cross-national comparisons in an effort to promote knowledge transfer and best practise. To support

  15. Teaching Global Engineering in Canada, Learning Informality of the Global South

    Science.gov (United States)

    Gopakumar, Govind

    2014-01-01

    Globalisation has inspired a wide assortment of curricular initiatives within engineering education in the USA and Europe. This interest could be categorised in multiple directions--international exposure, service learning, or critical understanding and praxis. In Canada, however, there has been far less consideration for integrating globalisation…

  16. Open heavy flavor measurements in $d$$+$Au collisions at PHENIX experiment

    CERN Document Server

    ,

    2014-01-01

    The heavy quarks produced in the early stage of heavy-ion collisions are very effective probes of the dense partonic medium produced at RHIC. PHENIX has the ability to measure heavy quark production through single electrons in the central arm spectrometers ($|\\eta|<0.35$) and single muons in the forward (backward) muon spectrometers ($1.2<|\\eta|<2.2$). As these single leptons are from open heavy-flavor meson semi-leptonic decays, initial state cold nuclear matter effects on heavy quark production can be probed by measuring the single leptons in $d$$+$Au collisions. PHENIX have observed a large enhancement of heavy-flavor electrons in $d$$+$Au collisions at mid-rapidity, which indicates strong CNM effects on heavy quark production, in contrast to the suppression observed in Au$+$Au collisions. Measurement of single muons from open heavy flavor in $d$$+$Au collisions at forward (backward) rapidity provide detailed look into rapidity dependent CNM effects as well as the low (high) $x$ parton distributio...

  17. Au nanoparticles films used in biological sensing

    Energy Technology Data Exchange (ETDEWEB)

    Rosales Perez, M; Delgado Macuil, R; Rojas Lopez, M; Gayou, V L [Centro de Investigacion en BiotecnologIa Aplicada del IPN, Tepetitla Tlaxcala Mexico C.P. 90700 (Mexico); Sanchez Ramirez, J F, E-mail: mrosalespe@ipn.m [CICATA Legaria Instituto Politecnico Nacional, Mexico Distrito Federal (Mexico)

    2009-05-01

    Lactobacillus para paracasei are used commonly as functional food and probiotic substances. In this work Au nanoparticles self-assembled films were used for Lactobacillus para paracasei determination at five different concentrations. Functionalized substrates were immersed in a colloidal solution for one and a half hour at room temperature and dried at room temperature during four hours. After that, drops of Lactobacillus para paracasei in aqueous solution were put into the Au nanoparticles film and let dry at room temperature for another two hours. Infrared spectroscopy in attenuated total reflectance sampling mode was used to observe generation peaks due to substrate silanization, enhancement of Si-O band intensity due to the Au colloids added to silanized substrate and also to observe the enhancement of Lactobacillus para paracasei infrared intensity of the characteristic frequencies at 1650, 1534 and 1450 cm{sup -1} due to surface enhancement infrared absorption.

  18. PHENIX Results in d + Au Collisions

    Science.gov (United States)

    Chen, Chin-Hao

    2016-04-01

    The PHENIX experiment at the Relativistic Heavy Ion Collider has performed a comprehensive set of measurements in d + Au collisions. Observables in d + Au collisions were originally conceived as a control experiment where no quark-gluon plasma is formed and one could isolate so-called cold nuclear matter effects, including nuclear modified parton distributions and parton multiple scattering. However, recent data from the PHENIX experiment in d + Au, in conjunction with new p + Pb results at the Large Hadron Collider, give strong evidence for a very different picture. We present new results that hint at the formation of a small quark-gluon plasma, that though short lived, leaves a fingerprint of evidence on final state observables. These new results will be discussed in the context of competing theoretical interpretations.

  19. Operational expert system applications in Canada

    CERN Document Server

    Suen, Ching Y

    1992-01-01

    This book is part of a new series on operational expert systems worldwide. Expert systems are now widely used in different parts of the world for various applications. The past four years have witnessed a steady growth in the development and deployment of expert systems in Canada. Research in this field has also gained considerable momentum during the past few years. However, the field of expert systems is still young in Canada. This book contains 13 chapters contributed by 31 experts from both universities and industries across Canada covering a wide range of applications related to electric

  20. Initial Study

    DEFF Research Database (Denmark)

    Torp, Kristian

    2009-01-01

    increased. In the initial study presented here, the time it takes to pass an intersection is studied in details. Two major signal-controlled four-way intersections in the center of the city Aalborg are studied in details to estimate the congestion levels in these intersections, based on the time it takes...

  1. Total structure determination of thiolate-protected Au38 nanoparticles.

    Science.gov (United States)

    Qian, Huifeng; Eckenhoff, William T; Zhu, Yan; Pintauer, Tomislav; Jin, Rongchao

    2010-06-23

    We report the total structure of Au(38)(SC(2)H(4)Ph)(24) nanoparticles determined by single crystal X-ray crystallography. This nanoparticle is based upon a face-fused Au(23) biicosahedral core, which is further capped by three monomeric Au(SR)(2) staples at the waist of the Au(23) rod and six dimeric staples with three on the top icosahedron and other three on the bottom icosahedron. The six Au(2)(SR)(3) staples are arranged in a staggered configuration, and the Au(38)S(24) framework has a C(3) rotation axis.

  2. Au nanorice assemble electrolytically into mesostars.

    Science.gov (United States)

    Bardhan, Rizia; Neumann, Oara; Mirin, Nikolay; Wang, Hui; Halas, Naomi J

    2009-02-24

    Star-shaped mesotructures are formed when an aqueous suspension of Au nanorice particles, which consist of prolate hematite cores and a thin Au shell, is subjected to an electric current. The nanorice particles assemble to form hyperbranched micrometer-scale mesostars. To our knowledge, this is the first reported observation of nanoparticle assembly into larger ordered structures under the influence of an electrochemical process (H(2)O electrolysis). The assembly is accompanied by significant modifications in the morphology, dimensions, chemical composition, crystallographic structure, and optical properties of the constituent nanoparticles.

  3. On the Stark broadening in the Au I and Au II spectra from a helium plasma

    Science.gov (United States)

    Djeniže, S.

    2009-03-01

    The Stark FWHM (Full-Width at Half of the Maximal line intensity, W) of 5 neutral and 26 singly ionized gold (Au I and Au II, respectively) spectral lines have been measured in laboratory helium plasma at approximately 16,600 K electron temperature and 7.4 × 10 22 m - 3 electron density. Five Au I and ten Au II W values are reported for the first time. The Au II W values are compared with recent theoretical data, calculated based on a modified semi-empirical approach, and also with existing experimental W values. Our normalized Stark widths are six times higher than those measured in a laser-produced plasma. Possible explanation of this is recommended here. An agreement (within the accuracy of the experiment and uncertainties of the theoretical approach used) with the recently calculated W data was found in the 6p-7s Au II transition. The calculated hyperfine splitting for the five Au II lines in the 6s-6p transition is also presented. At the stated helium plasma conditions, Stark broadening has been found to be the dominant mechanism in the Au I and Au II line shape formation. A modified version of the linear low-pressure pulsed arc was used as a plasma source operated in helium, with gold atoms as impurities evaporated from the thin gold cylindrical plates located in the homogeneous part of the discharge, providing conditions free of self-absorption. This plasma source ensures good conditions for generation of excited gold ions due to Penning and charge exchange effects.

  4. Measurement of D0 Meson Production and Azimuthal Anisotropy in Au+Au Collisions at √{sNN } = 200 GeV

    Science.gov (United States)

    Xie, Guannan; STAR Collaboration

    2017-08-01

    Due to the large masses, heavy-flavor quarks are dominantly produced in initial hard scattering processes and experience the whole evolution of the medium produced in heavy-ion collisions at RHIC energies. They are also expected to thermalize slower than light-flavor quarks. Thus the measurement of heavy quark production and azimuthal anisotropy can provide important insights into the medium properties through their interactions with the medium. In these proceedings, we report measurements of D0 production and elliptic flow (v2 via topological reconstruction using STAR's recently installed Heavy Flavor Tracker (HFT). The new measurement of the nuclear modification factor (RAA) of D0 mesons in central Au+Au collisions at √{sNN } = 200 GeV confirms the strong suppression at high transverse momenta (pT) reported in the previous publication with much improved precision. We also report the measurement of elliptic flow for D0 mesons in a wide transverse momentum range in 0-80% minimum-bias Au+Au collisions. The D0 elliptic flow is finite for pT > 2 GeV / c and is systematically below that of light hadrons in the same centrality interval. Furthermore, several theoretical calculations are compared to both RAA and v2 measurements, and the charm quark diffusion coefficient is inferred to be between 2 and ∼12.

  5. 19 CFR 123.41 - Truck shipments transiting Canada.

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 1 2010-04-01 2010-04-01 false Truck shipments transiting Canada. 123.41 Section... OF THE TREASURY CUSTOMS RELATIONS WITH CANADA AND MEXICO United States and Canada In-Transit Truck... Manifest, Customs Form 7512-B Canada 81/2. The driver shall present the manifest in four copies to U.S...

  6. 9 CFR 93.317 - Horses from Canada.

    Science.gov (United States)

    2010-01-01

    ... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false Horses from Canada. 93.317 Section 93... CONVEYANCE AND SHIPPING CONTAINERS Horses Canada 16 § 93.317 Horses from Canada. (a) Except as provided in paragraph (c) of this section, horses from Canada shall be inspected as provided in § 93.306; shall be...

  7. Cost Effectiveness of Infant Vaccination for Rotavirus in Canada

    Directory of Open Access Journals (Sweden)

    Doug Coyle

    2012-01-01

    Full Text Available INTRODUCTION: Rotavirus is the main cause of gastroenteritis in Canadian children younger than five years of age, resulting in significant morbidity and cost. The present study provides evidence on the cost effectiveness of two alternative rotavirus vaccinations (RotaTeq [Merck Frosst Canada Ltd, Canada] and Rotarix [GlaxoSmithKline, Canada] available in Canada.

  8. Opportunities for manufactured housing in Canada

    National Research Council Canada - National Science Library

    Bairstow, Dale

    1985-01-01

    In the fall of 1984, Canada Mortgage and Housing Corporation commissioned this study because it wanted to find out why manufactured housing appeared to be increasing in importance in certain foreign...

  9. 1982 Aleutian Canada goose nesting survey

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Investigation of the endangered Aleutian Canada goose (Branta canadensis leucopareia) was conducted from 1974 to 1976, again in 1977 and in 1979 on Buldir. During...

  10. The future of Canada's radio astronomy

    Science.gov (United States)

    Gaensler, Bryan M.

    2017-11-01

    Through involvement in CHIME, ALMA, the Jansky VLA and the Murchison Widefield Array, Canada is well placed in current radio astronomy facilities and the future looks even brighter, with strategic interest in the SKA and the Next Generation VLA.

  11. Driver's Licences for the handicapped in Canada.

    Science.gov (United States)

    Csapo, Marg; Clarke, Bryan R.

    1985-01-01

    The article reviews Canada's Guide for Physicians in Determining Fitness to Drive a Vehicle and then considers sections of provincial motor vehicle acts that regulate the issuance of licenses to the handicapped. (CL)

  12. Mineral Operations of Latin America and Canada

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This data set consists of records for over 900 mineral facilities in Latin America and Canada. The mineral facilities include mines, plants, smelters, or refineries...

  13. A novel Au SINE sequence found in a gymnosperm.

    Science.gov (United States)

    Yagi, Eiki; Akita, Toru; Kawahara, Taihachi

    2011-01-01

    Although many SINE families have been identified in the animal kingdom, only a few SINE families have been identified in plants, and their distribution is somewhat limited. The Au SINE (Au) has been found discontinuously in basal angiosperms, monocots, and eudicots. In this study, we examined the presence of the Au in gymnosperms and ferns by PCR using internal primers for Au. As a result, we found Au in a gymnosperm species, Ephedra ciliata. Therefore, Au was supposed to be present in the common ancestor of angiosperms and gymnosperms. The Au in E. ciliate was 15 bp shorter than the consensus sequence, which is similar to the Au SINE found in Glycine. However, the 3'end of the Au found in E. ciliate was more similar to the 3'end of the Medicago-type Au than that of the Glycine-type Au. A phylogenetic tree indicated that the Au sequence from E. ciliate is more closely related to the sequence found in Glycine than that found in Medicago/Lotus. These results indicated that Au were present in both angiosperms and gymnosperms.

  14. Charged hadron transverse momentum distributions in Au+Au collisions at {radical}S{sub NN} = 200 GeV

    Energy Technology Data Exchange (ETDEWEB)

    Back, B.B.; Baker, M.D.; Barton, D.S.; Betts, R.R.; Ballintijn, M.; Bickley, A.A.; Bindel, R.; Budzanowski, A.; Busza, W.; Carroll, A.; Decowski, M.P.; Garcia, E.; George, N.; Gulbrandsen, K.; Gushue, S.; Halliwell, C.; Hamblen, J.; Heintzelman, G.A.; Henderson, C.; Hofman, D.J.; Hollis, R.S.; Holynski, R.; Holzman, B.; Iordanova, A.; Johnson, E.; Kane, J.L.; Katzy, J.; Khan, N.; Kucewicz, W.; Kulinich, P.; Kuo, C.M.; Lin, W.T.; Manly, S.; McLeod, D.; Michalowski, J.; Mignerey, A.C.; Nouicer, R.; Olszewski, A.; Pak, R.; Park, I.C.; Pernegger, H.; Reed, C.; Remsberg, L.P.; Reuter, M.; Roland, C.; Roland, G.; Rosenberg, L.; Sagerer, J.; Sarin, P.; Sawicki, P.; Skulski, W.; Steadman, S.G.; Steinberg, P.; Stephans, G.S.F.; Stodulski, M.; Sukhanov, A.; Tang, J.-L.; Teng, R.; Trzupek, A.; Vale, C.; Nieuwenhuizen, G.J. van; Verdier, R.; Wadsworth, B.; Wolfs, F.L.H.; Wosiek, B.; Wozniak, K.; Wuosmaa, A.H.; Wyslouch, B

    2003-04-01

    We present transverse momentum distributions of charged hadrons produced in Au+Au collisions at {radical}S{sub NN} = 200 GeV. The evolution of the spectra for transverse momenta p{sub T} from 0.25 to 5 GeV/C is studied as a function of collision centrality. We find a significant change of the spectral shape between proton-antiproton and peripheral Au+Au collisions. When comparing peripheral to central Au+Au collisions, we find that the yields at the highest p{sub T} exhibit approximate scaling with the number of participating nucleons, rather than scaling with the number of binary collisions.

  15. Comprehensive school health in Canada.

    Science.gov (United States)

    Veugelers, Paul J; Schwartz, Margaret E

    2010-01-01

    The Canadian education system is among the best in the world academically. In contrast, students' (children and youth) eating and activity levels are so poor that they have led to prevalence rates of overweight that are among the highest in the world. Given the enormous public health burden associated with poor nutrition and physical inactivity, Canada needs to address this health risk. Comprehensive school health (CSH) is a promising approach to promoting healthy eating and active living (HEAL). This article provides a review of CSH and discusses its four essential elements: 1) teaching and learning; 2) social and physical environments; 3) healthy school policy; and 4) partnerships and services. It also provides a common understanding of the implementation and broader benefits of CSH, which, in addition to health, include student learning and self-esteem. The article further discusses some complexities of a rigorous evaluation of CSH, which comprises proof of implementation, impact and positive outcome. Though such an evaluation has yet to be conducted, some studies did confirm successful implementation, and another study observed positive outcomes. Rigorous evaluation is urgently needed to provide a stronger evidence base of the benefits of CSH for learning, self-esteem and disease prevention. This evidence is essential to justify devoting more school time to promote HEAL and more resources to implement and support CSH to the benefit of both learning and health.

  16. Export opportunities for Czech companies in Canada

    OpenAIRE

    Otta, Jiří

    2010-01-01

    The main goal of the theses is to analyze economic cooperation of Czech republic and Canada. There is a particular information about Canadian economical and political setting as well as local business environment. The theses places emphasis on how to help Czech exporters trading with Canada, and gives complete overview of opportunities for export, entrance to the market and helps to understand local business customs.

  17. The Beginning Farmers’ Problem In Canada

    OpenAIRE

    Pouliot, Sebastien

    2011-01-01

    Concerns about beginning farmers in Canada derive from trends in data that show that the population of farmers and the number of young farmers are declining. This paper discusses and analyses issues regarding the constraints and opportunities beginning farmers in Canada face. The discussion covers whether issues peculiar to beginning farmers are, from an economic policy point of view, a source of concern and whether there are motives for government intervention. The main conclusions are 1) th...

  18. The effect of low Au concentrations on the properties of eutectic Sn/Pb

    Energy Technology Data Exchange (ETDEWEB)

    Kramer, P.A.

    1992-05-01

    This study was of the effects moderately low Au concentrations ({le} 10 wt%) have on the mechanical properties and microstructure of an eutectic Sn/Pb alloy. Vibration (60--90 Hz swept sine wave for 30 hours) and thermal cycling (0--110C for 1450 cycles) reliability tests were performed on fine pitch leaded chip carriers using eutectic Sn/Pb solder on PCBs (printed circuit boards) with 0, 5, 10, 20, and 50{mu}in nominal Au thicknesses. Testing was also performed on double shear creep specimens consisting of arrays of regular pitch joints. There was a dramatic increase in the number of joints containing voids with increasing Au concentration, an effect more pronounced in the creep joints than in the reliability joints. These voids tended to coalesce and grow during rework simulation of the reliability joints. AuSn{sub 4} intermetallics present in toe of 4.8 wt% (50 {mu}in) Au vibration joints rotated from initial vertical perpendicular to surface of PCB metallization, solidification positions to roughly horizontal (parallel to plating surface) orientations during rework simulation and during aging of the parts. The AuSn{sub 4} intermetallics in the toe of the 4.8 wt% (50{mu}in) Au reflowed joints also rotated after vibration testing. No joint failures were observed in either vibration tested or thermally cycled specimens. Cracks formed in some of the vibration tested specimen joints under the heel of the gull-wing lead at Pb-rich phases. Thermally cycled specimens showed eutectic microstructure and intermetallic coarsening without crack formation. Creep tests showed loss of the superplasticity in eutectic Sn/Pb alloys with even the lowest Au concentration tested of 0.2 wt% Au. Intermetallic rotation was not a factor in crack propagation, but void presence was. Cracks tended to form in joints containing voids before forming in void-free joints. Crack propagation followed Sn/Sn grain boundaries and Sn/Pb phase boundaries from Pb-rich phase to Pb-rich phase.

  19. The effect of low Au concentrations on the properties of eutectic Sn/Pb

    Energy Technology Data Exchange (ETDEWEB)

    Kramer, Pamela Ann [Univ. of California, Berkeley, CA (United States)

    1992-05-01

    This study was of the effects moderately low Au concentrations (≤ 10 wt%) have on the mechanical properties and microstructure of an eutectic Sn/Pb alloy. Vibration (60--90 Hz swept sine wave for 30 hours) and thermal cycling (0--110C for 1450 cycles) reliability tests were performed on fine pitch leaded chip carriers using eutectic Sn/Pb solder on PCBs (printed circuit boards) with 0, 5, 10, 20, and 50μin nominal Au thicknesses. Testing was also performed on double shear creep specimens consisting of arrays of regular pitch joints. There was a dramatic increase in the number of joints containing voids with increasing Au concentration, an effect more pronounced in the creep joints than in the reliability joints. These voids tended to coalesce and grow during rework simulation of the reliability joints. AuSn4 intermetallics present in toe of 4.8 wt% (50 μin) Au vibration joints rotated from initial vertical perpendicular to surface of PCB metallization, solidification positions to roughly horizontal (parallel to plating surface) orientations during rework simulation and during aging of the parts. The AuSn4 intermetallics in the toe of the 4.8 wt% (50μin) Au reflowed joints also rotated after vibration testing. No joint failures were observed in either vibration tested or thermally cycled specimens. Cracks formed in some of the vibration tested specimen joints under the heel of the gull-wing lead at Pb-rich phases. Thermally cycled specimens showed eutectic microstructure and intermetallic coarsening without crack formation. Creep tests showed loss of the superplasticity in eutectic Sn/Pb alloys with even the lowest Au concentration tested of 0.2 wt% Au. Intermetallic rotation was not a factor in crack propagation, but void presence was. Cracks tended to form in joints containing voids before forming in void-free joints. Crack propagation followed Sn/Sn grain boundaries and Sn/Pb phase boundaries from Pb-rich phase to Pb-rich phase.

  20. La cardiomyopathie dilatee au centre hospitalier Universitaire ...

    African Journals Online (AJOL)

    La cardiomyopathie dilatee au centre hospitalier Universitaire Tokoin de Lome : A propos de 74 cas hospitalises. ... Le traitement médical a fait appel aux diurétiques (85,1%), aux inhibiteurs de l'enzyme de conversion de l'angiotensine (83,8%) et aux digitaliques (55,4%). Des antiarythmiques, des antiaggrégants ...

  1. Nanoporous Au: an unsupported pure gold catalyst?

    Energy Technology Data Exchange (ETDEWEB)

    Wittstock, A; Neumann, B; Schaefer, A; Dumbuya, K; Kuebel, C; Biener, M; Zielasek, V; Steinrueck, H; Gottfried, M; Biener, J; Hamza, A; B?umer, M

    2008-09-04

    The unique properties of gold especially in low temperature CO oxidation have been ascribed to a combination of various effects. In particular, particle sizes below a few nm and specific particle-support interactions have been shown to play important roles. On the contrary, recent reports revealed that monolithic nanoporous gold (npAu) prepared by leaching a less noble metal, such as Ag, out of the corresponding alloy can also exhibit remarkably high catalytic activity for CO oxidation, even though no support is present. Therefore, it was claimed to be a pure and unsupported gold catalyst. We investigated npAu with respect to its morphology, surface composition and catalytic properties. In particular, we studied the reaction kinetics for low temperature CO oxidation in detail taking mass transport limitation due to the porous structure of the material into account. Our results reveal that Ag, even if removed almost completely from the bulk, segregates to the surface resulting in surface concentrations of up to 10 at%. Our data suggest that this Ag plays a significant role in activation of molecular oxygen. Therefore, npAu should be considered as a bimetallic catalyst rather than a pure Au catalyst.

  2. Anomalies hematologiques au cours des accidents vasculaires ...

    African Journals Online (AJOL)

    Anomalies hematologiques au cours des accidents vasculaires cerebraux a Abidjan des (Cote d'Ivoire) ... Introduction: En Côte d'Ivoire, les accidents vasculaires cérébraux (AVC) sont de plus en ... The objective of the study was to report the hematological abnormalities in the stroke among black African patients in Abidjan.

  3. Didaktik des außerschulischen Lernens

    CERN Document Server

    Sauerborn, Petra

    2012-01-01

    Kernprobleme schulischer Bildung sind die zunehmenden Verluste an Realitäts- und Praxisbezug sowie die einseitige Betonung der fachwissenschaftlichen Kenntnisse. In jüngster Zeit werden insbesondere moderne didaktisch-methodische Konzepte näher diskutiert und praktiziert. So finden sich etwa die Stichwörter Handlungsorientierter Unterricht und Offener Unterricht in der fachdidaktischen Diskussion wieder. Eine wesentlich aktuellere Form stellt das außerschulische Lernen dar. Ein modernes pädagogisches Verständnis sieht den Unterricht heute nicht mehr als ausschließliche Tätigkeit des Lehrers an, sondern als Aktivität der Lernenden. Außerschulisches Lernen beschreibt die originale Begegnung im Unterricht außerhalb des Klassenzimmers. An außerschulischen Lernorten findet eine unmittelbare AuseinanderSetzung des Lernenden mit seiner räumlichen Umgebung statt. Charakteristisch sind hierbei vor allem die aktive(Mit-)Gestaltung sowie die eigenständige Wahrnehmung mehrperspektivischer Bildungsinhalte d...

  4. Melamine structures on the Au(111) surface

    NARCIS (Netherlands)

    Silly, Fabien; Shaw, Adam Q.; Castell, Martin R.; Briggs, G. A. D.; Mura, Manuela; Martsinovich, Natalia; Kantorovich, Lev

    2008-01-01

    We report on a joint experimental and theoretical study of the ordered structures of melamine molecules formed on the Au(111)-(22 x root 3) surface. Scanning tunneling microscopy (STM) images taken under UHV conditions reveal two distinct monolayers one of which has never been reported before on

  5. Surface structure of AU3Cu(001)

    DEFF Research Database (Denmark)

    Eckstein, G.A.; Maupai, S.; Dakkouri, A.S.

    1999-01-01

    The surface morphology, composition, and structure of Au3Cu(001) as determined by scanning tunneling microscopy and surface x-ray diffraction are presented. Atomic resolution STM images reveal distinctive geometric features. The analysis of the surface x-ray diffraction data provides clear evidence...... for the surface structure. [S0163-1829(99)04535-X]....

  6. Le CRDI au Pérou

    International Development Research Centre (IDRC) Digital Library (Canada)

    Arequipa. Trujillo. Chiclayo. Piura. Cuzco. Pucallpa. Iquitos. 914. ○ Tumbes. Quelques activités en cours. Voici quelques exemples des travaux de recherche appuyés par le CRDI au Pérou. □ Amélioration des pratiques agricoles pour lutter contre le paludisme. Financement : 500 400 CAD. Période visée : de 2012 à 2016.

  7. A Strategic Analysis of Canada Post's Parcel Ecommerce Growth Strategy

    OpenAIRE

    Brock, Kerry

    2012-01-01

    Canada Post is a market leader in the business to consumer residential delivery of parcels in Canada. There is an increasing demand for residential delivery due to the worldwide growth in ecommerce sales. This paper presents a strategic analysis of the opportunity for Canada Post to increase its breadth and depth in the parcel delivery industry in Canada. The analysis will review the parcel industry, the ecommerce opportunity, an internal review of Canada Post, develop and evaluate four strat...

  8. Characterization of Au and Bimetallic PtAu Nanoparticles on PDDA-Graphene Sheets as Electrocatalysts for Formic Acid Oxidation

    Science.gov (United States)

    Yung, Tung-Yuan; Liu, Ting-Yu; Huang, Li-Ying; Wang, Kuan-Syun; Tzou, Huei-Ming; Chen, Po-Tuan; Chao, Chi-Yang; Liu, Ling-Kang

    2015-09-01

    Nanocomposite materials of the Au nanoparticles (Au/PDDA-G) and the bimetallic PtAu nanoparticles on poly-(diallyldimethylammonium chloride) (PDDA)-modified graphene sheets (PtAu/PDDA-G) were prepared with hydrothermal method at 90 °C for 24 h. The composite materials Au/PDDA-G and PtAu/PDDA-G were evaluated by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA) for exploring the structural characterization for the electrochemical catalysis. According to TEM results, the diameter of Au and bimetallic PtAu nanoparticles is about 20-50 and 5-10 nm, respectively. X-ray diffraction (XRD) results indicate that both of PtAu and Au nanoparticles exhibit the crystalline plane of (111), (200), (210), and (311). Furthermore, XRD data also show the 2°-3° difference between pristine graphene sheets and the PDDA-modified graphene sheets. For the catalytic activity tests of Au/PDDA-G and PtAu/PDDA-G, the mixture of 0.5 M aqueous H2SO4 and 0.5 M aqueous formic acid was used as model to evaluate the electrochemical characterizations. The catalytic activities of the novel bimetallic PtAu/graphene electrocatalyst would be anticipated to be superior to the previous electrocatalyst of the cubic Pt/graphene.

  9. Croatian Language Maintenance in Canada

    Directory of Open Access Journals (Sweden)

    Ivana Petrović

    2017-01-01

    Full Text Available Although the topic of language maintenance has received considerable attention from linguists around the world, there are still many aspects of this language-contact phenomenon that could be examined further. This paper aims to contribute to the existing body of knowledge by exploring the state of Croatian as a heritage language in Canada. The aim of the paper is two-fold. The first is to describe the demographic characteristics of the Croatian community by investigating the number of people of Croatian descent and the number of Croatian speakers in Canada. The second, and more specific, aim of the paper is to provide an account of the state of Croatian as a minority language and examine the extent of language maintenance in the community. To accomplish the first objective, Canadian census data (1996, 2001, 2006, and 2011 was analyzed, with special focus on linguistic census data (number and age of Croatian speakers in Canada, mother tongue of people of Croatian descent, language most used at home, etc.. To accomplish the second objective, census data was supplemented with data from a questionnaire-based survey completed by members of the Croatian community in Toronto. The survey was completed by 220 participants; 110 first-generation Croatian Canadians and 110 second-generation Croatian Canadians. Two versions of the questionnaire were designed, one for first-generation participants and the other for second-generation participants. The great majority of items in the two versions were identical; each version contained questions about demographic characteristics, language use in everyday life, and self-perceived language proficiency in English and Croatian. The majority of questions were of a closed type (multiple-choice questions and rating scales, but there were also some open-ended questions, so as to give participants the opportunity to express their viewpoint or comment on certain issues. Questions were written in both Croatian and English

  10. Preliminary results of proton therapy in choroidal melanoma at the centre de proton therapy d`Orsay (C.P.O.): 464 initial cases; Resultats preliminaires de la protontherapie du melanome de la choroide au centre de protontherapie d`Orsay (CPO): les 464 premiers cas

    Energy Technology Data Exchange (ETDEWEB)

    Desjardins, L.; Levy, C.; D`hermies, F.; Frau, E.; Schlienger, P.; Habrand, J.L.; Mammar, H.; Schwartz, L.; Mazal, A.; Delacroix, S.; Nauraye, C.; Ferrand, R.; Asselain, B. [Centre de protontherapie d`Orsay, 91 - Orsay (France)

    1997-06-01

    Retrospective analysis of the treatment of choroidal melanoma with proton-therapy at the Centre de protontherapie d`Orsay, France. Between September 1991 and September 1995, 612 patients presenting with choroidal melanoma were treated by proton-therapy in Orsay. Following initial management of the first 464 patients, results were analyzed, as were results after a 1-year follow up for 305 patients, a 2-year follow-up for 169 patients, and a 3-year follow-up for 59 patients. Univariate analysis showed that the actuarial local recurrence rate was 5 %, the 3-year survival rate 88 %, and the overall metastatic rate 5%. The initial tumor volume was the most significant predictive factor for visual results and metastases. Multivariate analysis revealed that visual results were significantly related to the initial tumor volume, initial retinal detachment, and total dose delivered to the optic nerve and macula. Proton-therapy of choroidal melanoma allows in most cases conservation of the eye without modification of survival. Visual results mainly depend on the site and size of the tumor. (author) 16 refs.

  11. Des institutions au service de villes sûres et inclusives au Venezuela

    International Development Research Centre (IDRC) Digital Library (Canada)

    Caracas, au Venezuela, est l'une des villes les plus violentes au monde; il s'y commet 122 homicides par tranche de 100 000 habitants. Selon les experts en violence urbaine, les inégalités sociales et la disparité des revenus sont étroitement liées à l'ampleur de la violence, mais cette théorie ne tient pas dans le cas ...

  12. Prévention de la violence chez les jeunes au Guatemala, au ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    La violence chez les jeunes, que ceux-ci en soient victimes ou responsables, est l'un des problèmes les plus importants en Amérique centrale. Ce projet de recherche servira à évaluer les stratégies actuelles de prévention de la violence chez les jeunes dans le triangle nord de la région, soit au Salvador, au Guatemala et ...

  13. Directed Flow of Light Nuclei in Au+Au Collisions at AGS Energies

    OpenAIRE

    E877 Collaboration; Barrette, J.; Bellwied, R.; Bennett, S.; Bersch, R.; Braun-Munzinger, P.; Chang, W. C.; Cleland, W. E.; Clemen, M.; Cole, J.; Cormier, T. M.; Dai, Y.; David, G.; Dee, J.; Dietzsch, O.

    1998-01-01

    Directed flow of deuterons, tritons, $^3$He, and $^4$He is studied in Au+Au collisions at a beam momentum of about 10.8 $A$ GeV/c. Flow of all particles is analyzed as a function of transverse momentum for different centralities of the collision. The directed flow signal, $v_1(p_t)$, is found to increase with particle mass. This mass dependence is strongest in the projectile rapidity region.

  14. A first look at Au·Au collisions at RHIC energies using the PHOBOS ...

    Indian Academy of Sciences (India)

    A first look at Au·Au collisions at RHIC energies using the PHOBOS detector. BIRGER BACK1, for the PHOBOS Collaboration. M D Baker2, D S Barton2, R R Betts6, R Bindel7, A Budzanowski3, W Busza4,. A Carroll2, J Corbo2, M P Decowski4, E Garcia6, N George1, K Gulbrandsen4, S Gushue2,. C Halliwell6, J Hamblen8, ...

  15. Flow and bose-einstein correlations in Au-Au collisions at RHIC

    Energy Technology Data Exchange (ETDEWEB)

    Manly, Steven; Back, B.B.; Baker, M.D.; Barton, D.S.; Betts, R.R.; Bindel, R.; Budzanowski, A.; Busza, W.; Carroll, A.; Decowski, M.P.; Garcia, E.; George, N.; Gulbrandsen, K.; Gushue, S.; Halliwell, C.; Hamblen, J.; Henderson, C.; Hofman, D.; Hollis, R.S.; Holyinski, R.; Holzman, B.; Iordanova, A.; Johnson, E.; Kane, J.; Katzy, J.; Khan, N.; Kucewicz, W.; Kulinich, P.; Kuo, C.M.; Lin, W.T.; Manly, S.; McLeod, D.; Michalowski, J.; Mignerey, A.; Nouicer, R.; Olszewski, A.; Pak, R.; Park, I.C.; Pernegger, H.; Reed, C.; Remsberg, L.P.; Reuter, M.; Roland, C.; Roland, G.; Rosenberg, L.; Sagerer, J.; Sarin, P.; Sawicki, P.; Skulski, W.; Steadman, S.G.; Steinberg, P.; Stephans, G.S.F.; Stodulski, M.; Sukhanov, A.; Tang, J.-L.; Teng, R.; Trzupek, A.; Vale, C.; Nieuwenhuizen, G.J. van; Verdier, R.; Wadsworth, B.; Wolfs, F.L.H.; Wosiek, B.; Wozniak, K.; Wuosmaa, A.H.; Wyslouch, B

    2003-03-10

    Argonne flow and Bose-Einstein correlations have been measured in Au-Au collisions at {radical}S{sub NN} = 130 and 200 GeV using the PHOBOS detector at RHIC. The systematic dependencies of the flow signal on the transverse momentum, pseudorapidity, and centrality of the collision, as well as the beam energy are shown. In addition, results of a 3-dimensional analysis of two-pion correlations in the 200 GeV data are presented.

  16. Femmes, migration et droits au Mali et au Sénégal | CRDI - Centre ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    En Afrique de l'Ouest, notamment au Mali et au Sénégal, les migrations féminines concernent majoritairement les flux d'une part à l'intérieur des pays et d'autre part entre les pays. Du fait de la pauvreté, manque d'opportunités économiques et manque d'éducation, les jeunes filles migrantes risquent de subir des violations ...

  17. Synthesis of vinyl-terminated Au nanoprisms and nanooctahedra mediated by 3-butenoic acid: direct Au@pNIPAM fabrication with improved SERS capabilities

    Science.gov (United States)

    Casado-Rodriguez, M. A.; Sanchez-Molina, M.; Lucena-Serrano, A.; Lucena-Serrano, C.; Rodriguez-Gonzalez, B.; Algarra, M.; Diaz, A.; Valpuesta, M.; Lopez-Romero, J. M.; Perez-Juste, J.; Contreras-Caceres, R.

    2016-02-01

    Here we describe the first seedless synthesis of vinyl-terminated Au nanotriangular prisms (AuNTPs) and nanooctahedra (AuNOC) in aqueous media. This synthesis is performed by chemical reduction of chloroauric acid (HAuCl4) with 3-butenoic acid (3BA) in the presence of benzyldimethylammonium chloride (BDAC). The principal novelties of the presented method are the use of a mixture of 3BA and BDAC, the synthesis of gold prisms and octahedra with controllable size, and the presence of terminal double bonds on the metal surface. Initially this method produces a mixture of triangular gold nanoprisms and octahedra; however, both morphologies are successfully separated by surfactant micelle induced depletion interaction, reaching percentages up to ~90%. Moreover, the alkene moieties present on the gold surface are exploited for the fabrication of hybrid core@shell particles. Gold octahedra and triangular prisms are easily encapsulated by free radical polymerization of N-isopropylacrylamide (NIPAM). Finally, in order to obtain a gold core with the most number of tips, AuNTP@pNIPAM microgels were subjected to gold core overgrowth, thus resulting in star-shaped nanoparticles (AuSTs@pNIPAM). We use 4-amino-benzenethiol as the model analyte for SERS investigations. As expected, gold cores with tips and high curvature sites produced the highest plasmonic responses.Here we describe the first seedless synthesis of vinyl-terminated Au nanotriangular prisms (AuNTPs) and nanooctahedra (AuNOC) in aqueous media. This synthesis is performed by chemical reduction of chloroauric acid (HAuCl4) with 3-butenoic acid (3BA) in the presence of benzyldimethylammonium chloride (BDAC). The principal novelties of the presented method are the use of a mixture of 3BA and BDAC, the synthesis of gold prisms and octahedra with controllable size, and the presence of terminal double bonds on the metal surface. Initially this method produces a mixture of triangular gold nanoprisms and octahedra; however

  18. A reagentless amperometric immunosensor based on nano-au and ...

    African Journals Online (AJOL)

    In this paper, carboxyl-ferrocene (Fc-COOH) was explored to label alphafetoprotein antibody (anti-AFP), which was then mixed with AU nanoparticles (nano-Au) and multi-walled carbon nanotubes (MWCNTs) dispersed by chitosan (CS) to form the nano-Au/MWCNTs/anti-AFP-Fc chitosan composite. After that, the composite ...

  19. Au pair på ulige vilkår

    DEFF Research Database (Denmark)

    Christiansen, Connie Carøe

    2008-01-01

    Antallet af au pairs i Danmark fra Fillipinerne er steget markant i de seneste år. Mens danske myndigheder betragter au pair-ordningen som kulturudveksling blandt unge mennesker, ser fillipinske au pairs derimod den som en mulighed for at tjene penge så de kan forsørge deres egen familie i Fillip...

  20. The point-defect of carbon nanotubes anchoring Au nanoparticles

    DEFF Research Database (Denmark)

    Lv, Y. A.; Cui, Y. H.; Li, X. N.

    2010-01-01

    between Au clusters and CNTs by means of density functional theory calculations. Both experimental and theoretical studies show that point defects are the anchoring sites of Au nanoparticles. The mechanisms of enhanced bond between Au and CNTs via the point defects are explained by the analysis of density...

  1. Common suppression pattern of η and π0 mesons at high transverse momentum in Au+Au collisions at VsNN=200 GeV

    NARCIS (Netherlands)

    Peitzmann, T.

    2006-01-01

    Inclusive transverse momentum spectra of η mesons have been measured within pT=2–10 GeV/c at midrapidity by the PHENIX experiment in Au+Au collisions at VsNN=200 GeV. In central Au+Au the η yields are significantly suppressed compared to peripheral Au+Au, d+Au, and p+p yields scaled by the

  2. Electronic and geometric structures of Au30 clusters: a network of 2e-superatom Au cores protected by tridentate protecting motifs with u3-S.

    Science.gov (United States)

    Tian, Zhimei; Cheng, Longjiu

    2016-01-14

    Density functional theory calculations have been performed to study the experimentally synthesized Au30S(SR)18 and two related Au30(SR)18 and Au30S2(SR)18 clusters. The patterns of thiolate ligands on the gold cores for the three thiolate-protected Au30 nanoclusters are on the basis of the "divide and protect" concept. A novel extended protecting motif with u3-S, S(Au2(SR)2)2AuSR, is discovered, which is termed the tridentate protecting motif. The Au cores of Au30S(SR)18, Au30(SR)18 and Au30S2(SR)18 clusters are Au17, Au20 and Au14, respectively. The superatom-network (SAN) model and the superatom complex (SAC) model are used to explain the chemical bonding patterns, which are verified by chemical bonding analysis based on the adaptive natural density partitioning (AdNDP) method and aromatic analysis on the basis of the nucleus-independent chemical shift (NICS) method. The Au17 core of the Au30S(SR)18 cluster can be viewed as a SAN of one Au6 superatom and four Au4 superatoms. The shape of the Au6 core is identical to that revealed in the recently synthesized Au18(SR)14 cluster. The Au20 core of the Au30(SR)18 cluster can be viewed as a SAN of two Au6 superatoms and four Au4 superatoms. The Au14 core of Au30S2(SR)18 can be regarded as a SAN of two pairs of two vertex-sharing Au4 superatoms. Meanwhile, the Au14 core is an 8e-superatom with 1S(2)1P(6) configuration. Our work may aid understanding and give new insights into the chemical synthesis of thiolate-protected Au clusters.

  3. The effect of Au amount on size uniformity of self-assembled Au nanoparticles

    Energy Technology Data Exchange (ETDEWEB)

    Chen, S-H; Wang, D-C; Chen, G-Y; Chen, K-Y [Graduate School of Engineering Science and Technology, National Yunlin University of Science and Technology, Taiwan (China)

    2008-03-15

    The self-assembled fabrication of nanostructure, a dreaming approach in the area of fabrication engineering, is the ultimate goal of this research. A finding was proved through previous research that the size of the self-assembled gold nanoparticles could be controlled with the mole ratio between AuCl{sub 4}{sup -} and thiol. In this study, the moles of Au were fixed, only the moles of thiol were adjusted. Five different mole ratios of Au/S with their effect on size uniformity were investigated. The mole ratios were 1:1/16, 1:1/8, 1:1, 1:8, 1:16, respectively. The size distributions of the gold nanoparticles were analyzed by Mac-View analysis software. HR-TEM was used to derive images of self-assembled gold nanoparticles. The result reached was also the higher the mole ratio between AuCl{sub 4}{sup -} and thiol the bigger the self-assembled gold nanoparticles. Under the condition of moles of Au fixed, the most homogeneous nanoparticles in size distribution derived with the mole ratio of 1:1/8 between AuCl{sub 4}{sup -} and thiol. The obtained nanoparticles could be used, for example, in uniform surface nanofabrication, leading to the fabrication of ordered array of quantum dots.

  4. Effects of Excimer Irradiation Treatment on Thermocompression Au-Au Bonding

    Science.gov (United States)

    Naoko Unami,; Katsuyuki Sakuma,; Jun Mizuno,; Shuichi Shoji,

    2010-06-01

    We studied the feasibility of using vacuum ultraviolet (VUV) treatment as a surface improvement technique with Au-Au flip-chip bonding. For fine-pitch electrical interconnections in three-dimensional (3D) stack applications, robust and reliable bonding is desirable; in this case, surface modification treatment is needed before the bonding process. A VUV surface treatment was used to remove organic contaminants. Samples of electroplated Au pads were examined by X-ray photoelectron spectroscopy (XPS) to evaluate the chemical composition of the Au surfaces. The XPS results revealed that the carbon-based contaminants on the surface were removed by the VUV treatment. The shear strength of the bonded sample was also improved. The average shear strength of a bump with VUV treatment is 1.6 times larger than that of a bump without VUV treatment. Cross-sectional scanning electron microscopy (SEM) images of the bonded samples confirmed the absence of voids and cracks. The results show that VUV treatment has clear effects on Au-Au flip-chip bonding.

  5. Relation entre l'obésité et la sécurité alimentaire des ménages, les caractéristiques des ménages et le milieu scolaire chez les enfants métis et des Premières Nations vivant hors réserve au Canada : résultats de l'Enquête auprès des peuples autochtones de 2012

    Directory of Open Access Journals (Sweden)

    Jasmin Bhawra

    2017-01-01

    Full Text Available Introduction : Les enfants autochtones sont deux fois plus susceptibles d'être classés comme obèses et trois fois plus susceptibles de vivre dans l'insécurité alimentaire que les autres enfants canadiens. Le but de cette étude est d'explorer la relation entre l'insécurité alimentaire et le poids chez les enfants et les jeunes métis et des Premières Nations vivant hors réserve à l'échelle du Canada. Méthodologie : Nous avons obtenu des données sur les enfants et les jeunes de 6 à 17 ans (n = 6 900 tirées de l'Enquête auprès des peuples autochtones de 2012. Nous avons testé les relations bivariées à l'aide des tests du chi carré de Pearson et utilisé des régressions logistiques binaires imbriquées pour examiner la relation entre l'insécurité alimentaire et le poids, en tenant compte de la dimension spatiale, des caractéristiques des ménages ainsi que de l'environnement scolaire et de facteurs culturels. Résultats : Environ 22 % des enfants et des jeunes métis et des Premières Nations souffraient d'embonpoint et 15 % étaient classés comme obèses. Plus de 80 % des répondants ont signalé ne pas souffrir d'insécurité alimentaire, 9 % ont fait état d'une sécurité alimentaire faible et 7 % d'insécurité alimentaire grave. Les enfants et les jeunes autochtones vivant hors réserve dans des ménages à très faible sécurité alimentaire présentaient un risque accru d'embonpoint ou d'obésité, quoique ce risque accru ne se soit pas révélé indépendant du statut socioéconomique du ménage et qu'il se soit trouvé réduit en tenant compte du revenu du ménage après ajustement en fonction de la taille de ce dernier. Un environnement scolaire négatif s'est révélé également être un prédicteur important du risque d'obésité, indépendamment des facteurs démographiques, spatiaux et liés aux ménages. Conclusion : L'insécurité alimentaire et l'obésité étaient répandues parmi les groupes

  6. Au(I/Au(III-catalyzed Sonogashira-type reactions of functionalized terminal alkynes with arylboronic acids under mild conditions

    Directory of Open Access Journals (Sweden)

    Deyun Qian

    2011-06-01

    Full Text Available A straightforward, efficient, and reliable redox catalyst system for the Au(I/Au(III-catalyzed Sonogashira cross-coupling reaction of functionalized terminal alkynes with arylboronic acids under mild conditions has been developed.

  7. Marriage and cohabitation: demographic and socioeconomic differences in Quebec and Canada

    Directory of Open Access Journals (Sweden)

    Moyser, Melissa

    2006-01-01

    Full Text Available EnglishCohabitation has become so prevalent in Canada that it is now the most commonmode of entry into conjugality. Yet in drawing comparisons across Canadianprovinces, cohabitation is far more prevalent in the province of Quebec thanelsewhere. With this in mind, the purpose of the current paper is three fold. First,we set out to briefly situate the recent growth in the number of common-lawunions in Canada and Quebec into a broader historical and international context.Secondly, we review available information from the 2001 Census and the 1998General Social Survey on some of the key socioeconomic and demographiccharacteristics of persons who cohabit relative to those that marry. Thirdly, weconsider how these changes are important to public policy, and of direct interest to legislators andthe Canadian legal system. Major differences are documentedin comparing Quebec with elsewhere in Canada in terms of the education, laborforce participation, median income, income poverty and homeownership. Thedifferences documented between persons who marry relative to cohabiters arefound to be much less in Quebec than elsewhere, in a context wherebycohabitation has become far more widespread, an observation with directimplications for public policy.FrenchLa cohabitation est devenue tant prévalente au Canada qu’elle représenteactuellement le mode d’entrée dans la vie conjugale le plus répandu. Cependant,quand on compare entre les provinces canadiennes, la cohabitation est beaucoupplus prévalente dans la province de Québec que dans le reste du pays. En tenantcompte de ce fait, cet article a les trois buts suivant : Premièrement, nousdonnons un bref aperçu de la récente hausse du nombre d’unions de fait dansson plus large contexte historique et international ; deuxièmement, nous révisonsl’information recueillie par le Recensement de 2001 et l’Enquête socialenationale de 1998 au sujet de certaines caractéristiques socioéconomiques etd

  8. Profil des insuffisants rénaux chroniques diabétiques à l'initiation de l'hémodialyse au service de néphrologie et dialyse de l'hôpital militaire de Rabat, Maroc

    Science.gov (United States)

    El Farouki, Mohamed Reda; Bahadi, Abdelaali; Hamzi, Mohamed Amine; Kabbaj, Driss; Benyahia, Mohammed

    2013-01-01

    Résumé Le diabète constitue une cause fréquente d'insuffisance rénale chronique terminale (IRCT) dans le monde. Ce travail présente une étude clinique rétrospective dont le but est de décrire le profil clinico-biologique des patients diabétiques en IRCT, de le comparer aux patients non-diabétiques au stade d'IRCT, et de suivre l’évolution de leurs abords vasculaires, afin d'en déduire des conclusions sur une prise en charge particulière des patients diabétiques. Les paramètres cliniques et biologiques concernant les patients mis en hémodialyse dans notre formation entre le 01 janvier 2006 et le 31 décembre 2011, ont été recueilli et analysés. Nous avons procédé à l’étude comparative des patients en fonction de l'existence ou non d'une néphropathie diabétique, et nous nous sommes intéressés à l’évolution de leurs abords vasculaires. Il s'agit de 207 patients insuffisants rénaux chroniques, dont 86 diabétiques. Le groupe des patients diabétiques était moins suivi avant la mise en hémodialyse (3,66 mois vs. 6,32 mois), avec une prise beaucoup plus importante d'antihypertenseurs (1,87 vs. 1,14, p<0,001). L’échec des abords vasculaires était plus important chez les patients diabétiques (45% vs. 27%, p=0,006), avec une survie moyenne plus faible de leurs abords vasculaires (509 vs 753 jours, p=0,003). L’étude comparative des taux d'hémoglobine, de parathormone intacte, d'albuminémie et de C-réactive protéine, entre le groupe de patients diabétiques et non diabétiques était non significative. Notre étude soulève le problème du suivi néphrologique chez les diabétiques, pourtant censés être mieux suivis, et son retentissement sur l'avenir de leurs abords vasculaires. PMID:24255730

  9. Type and timing of first union formation in Québec and the rest of Canada: Continuity and change across the 1930–79 birth cohorts

    Directory of Open Access Journals (Sweden)

    Laura Wright

    2017-01-01

    Full Text Available Trends in age at marriage have been well documented, but less is known about age at first union among recent cohorts of Canadians. Using the 2011 GSS, I document changes in the type and timing of first union formation among Canadians born over five decades, and examine how regional differences in partnering behaviours have changed over time. The trend away from entering marriage directly has continued among Canadians born in the 1970s, but Québec-Canada differences have narrowed. The trend towards later marriage has continued, but age at first union has not changed across the five cohorts under study. Les tendances en ce qui a trait à l’âge au mariage ont été bien documentées, mais moins est connu quant à l’âge à la première union chez les dernières cohortes de Canadiens. À partir de données provenant de l’ESG de 2011, je documente les changements au niveau du type et du moment de la formation de premières unions auprès de Canadiens nés au cours de cinq décennies et j’examine en quelle mesure les différences régionales quant aux comportements liés au partenariat ont changé au fil du temps. La tendance à délaisser l’entrée directe au mariage a continué chez les Canadiens nés dans les années 1970, mais l’écart Québec-Canada a diminué. La tendance vers le mariage plus tardif a continué, mais l’âge à la première union n’a pas changé à travers les cinq cohortes à l’étude.

  10. From the Ternary Eu(Au/In)2 and EuAu4(Au/In)2 with Remarkable Au/In Distributions to a New Structure Type: The Gold-Rich Eu5Au16(Au/In)6 Structure.

    Science.gov (United States)

    Steinberg, Simon; Card, Nathan; Mudring, Anja-Verena

    2015-09-08

    The ternary Eu(Au/In)2 (EuAu(0.46)In(1.54(2))) (I), EuAu4(Au/In)2 (EuAu(4+x)In(2-x) with x = 0.75(2) (II), 0.93(2), and 1.03(2)), and Eu5Au16(Au/In)6 (Eu5Au(17.29)In(4.71(3))) (III) have been synthesized, and their structures were characterized by single-crystal X-ray diffraction. I and II crystallize with the CeCu2-type (Pearson Symbol oI12; Imma; Z = 4; a = 4.9018(4) Å; b = 7.8237(5) Å; c = 8.4457(5) Å) and the YbAl4Mo2-type (tI14; I4/mmm; Z = 2; a = 7.1612(7) Å; c = 5.5268(7) Å) and exhibit significant Au/In disorder. I is composed of an Au/In-mixed diamond-related host lattice encapsulating Eu atoms, while the structure of II features ribbons of distorted, squared Au8 prisms enclosing Eu, Au, and In atoms. Combination of these structural motifs leads to a new structure type as observed for Eu5Au16(Au/In)6 (Eu5Au(17.29)In(4.71(3))) (oS108; Cmcm; Z = 4; a = 7.2283(4) Å; b = 9.0499(6) Å; c = 34.619(2) Å), which formally represents a one-dimensional intergrowth of the series EuAu2-"EuAu4In2". The site preferences of the disordered Au/In positions in II were investigated for different hypothetical "EuAu4(Au/In)2" models using the projector-augmented wave method and indicate that these structures attempt to optimize the frequencies of the heteroatomic Au-In contacts. A chemical bonding analysis on two "EuAu5In" and "EuAu4In2" models employed the TB-LMTO-ASA method and reveals that the subtle interplay between the local atomic environments and the bond energies determines the structural and site preferences for these systems.

  11. Only in Canada: A Study of National Market Potential for Christian Higher Education Canada (CHEC) Institutions

    Science.gov (United States)

    Hiebert, Al

    2011-01-01

    In July 2007 Ipsos Reid delivered to Christian Higher Education Canada (CHEC) a report entitled "Christian Post-Secondary Education in Canada, Phase 3: Defining the Market". This article is a selective summary of the full 353-page report. It tabulates and analyzes findings from 1,000 phone interviews and 6,689 online surveys from six…

  12. Aging in a Multicultural Canada: A Graphic Overview = Le Vieillissement dans un Canada Multiculturel: Apercu Graphique.

    Science.gov (United States)

    Department of the Secretary of State, Ottawa (Ontario). Multiculturalism Directorate.

    This document, in English and French, provides a graphic overview of statistical data on aging and ethnicity in Canada. Most of the information was drawn from 1981 and 1986 census figures and immigration statistics. Part 1, "Multicultural Canada," provides background information on the multicultural nature of the population. One map and…

  13. Evaluation of the pertinence of PET with {sup 18}F-F.D.G. utilisation in the initial assessments of lymphomas and bronco-pulmonary cancers; Evaluation de la pertinence de l'utilisation de la TEP au {sup 18}F-FDG dans les bilans initiaux des lymphomes et des cancers broncho-pulmonaires

    Energy Technology Data Exchange (ETDEWEB)

    Gries, P.; Caignon, J.M.; Chabane, G.; Peltier, P.; Morineau, N.; Ramee, J.F. [Centre Catherine-de-Sienne, 44 - Nantes (France)

    2010-07-01

    Purpose: to assess the pertinence to use PET with F.D.G. in the initial check up of lymphomas and bronco pulmonary cancers. To analyze their impact on the later therapy decision. Means to implement to correct the possible defaults of prescription. Conclusions: This work revealed the PET is still for numerous practitioners an unrecognized examination, requiring an effort of information. (N.C.)

  14. In-situ STM study of phosphate adsorption on Cu(111), Au(111) and Cu/Au(111) electrodes

    DEFF Research Database (Denmark)

    Schlaup, Christian; Horch, Sebastian

    2013-01-01

    The interaction of Cu(111), Au(111) and Cu-covered Au(111) electrodes with a neutral phosphate buffer solution has been studied by means of cyclic voltammetry (CV) and in situ electrochemical scanning tunneling microscopy (EC-STM). Under low potential conditions, both the Cu(111) and the Au(111) ...

  15. Tuning the kondo effect in thin Au films by depositing a thin layer of Au on molecular spin-dopants

    NARCIS (Netherlands)

    Ataç, Derya; Gang, T.; Yilmaz, M.D.; Bose, Saurabh; Lenferink, Aufrid T.M.; Otto, Cornelis; de Jong, Machiel Pieter; Huskens, Jurriaan; van der Wiel, Wilfred Gerard

    2013-01-01

    We report on the tuning of the Kondo effect in thin Au films containing a monolayer of cobalt(II) terpyridine complexes by altering the ligand structure around the Co2+ ions by depositing a thin Au capping layer on top of the monolayer on Au by magnetron sputtering (more energetic) and e-beam

  16. Conduction and reversible memory phenomena in Au-nanoparticles-incorporated TeO{sub 2}–ZnO films

    Energy Technology Data Exchange (ETDEWEB)

    Bontempo, L., E-mail: bontempo@usp.br [Laboratório de Sistemas Integráveis, Escola Politécnica da Universidade de São Paulo, Av. Prof. Luciano Gualberto, 158, Travessa 3, 05508-900 São Paulo, SP (Brazil); Laboratório de Materiais Fotônicos e Optoeletrônicos, Faculdade de Tecnologia de São Paulo, Praça Cel. Fernando Prestes, 30, 01124-060 São Paulo, SP (Brazil); Santos Filho, S.G. dos, E-mail: sgsantos@usp.br [Laboratório de Sistemas Integráveis, Escola Politécnica da Universidade de São Paulo, Av. Prof. Luciano Gualberto, 158, Travessa 3, 05508-900 São Paulo, SP (Brazil); Kassab, L.R.P., E-mail: kassablm@osite.com.br [Laboratório de Materiais Fotônicos e Optoeletrônicos, Faculdade de Tecnologia de São Paulo, Praça Cel. Fernando Prestes, 30, 01124-060 São Paulo, SP (Brazil)

    2016-07-29

    A reversible memory behavior in TeO{sub 2}–ZnO thin films containing Au nanoparticles prepared using the sputtering technique has been observed. The current–voltage characteristics of the films, having Al and Si as electrodes, showed a switching behavior starting from an initial state of low conductivity to a high conductivity one. As a result, an abrupt increase of current (10{sup −7} to 10{sup −3} A) was observed for 6.5 V (100 nm thickness). Au nanoparticles provide a larger electron storage capability, and do not favor the transport through the insulator; they present a higher trapped charge concentration, which reduces the leakage current to lower levels. The influence of the Au nanoparticle diameter and volumetric concentration to reach the abrupt current transition and the value of the transition voltage was studied. These parameters were found to play an important role on reversible memory phenomena as they determine the facility/difficulty to fill and saturate the traps (Au nanoparticles) with electrons. - Highlights: • TeO{sub 2}–ZnO thin films with Au nanoparticles grown by magnetron co-sputtering for memory devices • Nucleation of gold nanoparticles by annealing process • Electrical properties of TeO{sub 2}–ZnO thin films with and without gold nanoparticles • Reversible memory phenomenum in Au-nanoparticles-incorporated TeO{sub 2}–ZnO thin films.

  17. Nanoscale thin film growth of Au on Si(111)-7 × 7 surface by pulsed laser deposition method

    Science.gov (United States)

    Yokotani, Atsushi; Kameyama, Akihiro; Nakayoshi, Kohei; Matsunaga, Yuta

    2017-03-01

    To obtain important information for fabricating atomic-scale Au thin films that are used for biosensors, we have observed the morphology of Au particles adsorbed on a Si(111)-7 × 7 surface, which is supposed to be the initial stage of Au atomistic thin film formation. Au particles were adsorbed on the clean Si surface using a PLD method, and the adsorbed particles were observed using a scanning tunneling microscope. As the number of laser shots was increased in the PLD method, the size of the adsorbed particle became larger. The larger particles seemed to form clusters, which are aggregations of particles in which each particle is distinguished, so we call this type of cluster a film-shaped cluster. In this work, we have mainly analyzed this type of cluster. As a result the film-shaped clusters were found to have a structure of nearly monoatomic layers. The particles in the clusters were gathered closely in roughly a 3-fold structure with an inter particle distance of 0.864 nm. We propose a model for the cluster structure by modifying Au(111) face so that each observed particle consists of three Au atoms.

  18. Probing the quenching of CdSe/ZnS qdots by Au, Au/Ag, and Au/Pd nanoparticles.

    Science.gov (United States)

    Han, Hyunjoo; Valle, Valerie; Maye, Mathew M

    2012-11-02

    The resonance energy transfer between CdSe/ZnS quantum dots (qdots) and three metallic nanoparticles (NPs) with different surface plasmon resonance (SPR) characteristics were studied. Gold, gold/silver and gold/palladium NPs were used as energy acceptors for qdots with donor emission at 570 nm. Due to the different spectral overlaps between the SPR signatures and qdot emission, varied energy transfer characteristics were observed. The energy transfer was quantified via the Stern-Volmer relationship, since in this study the energy transfer was collision based. The Au/Ag and Au/Pd NPs in particular showed high K(SV) values, while the Au NPs showed much lower energy transfer efficiency. Since the NPs used in this study were relatively large (d ~ 15-20 nm), the experimental system was also influenced by the NP extinction coefficients of ≈10(8) M(-1) cm(-1). To address this potential inner filter effect, the quenching profiles were normalized by SPR transmittance. The results are important to the field, as many of these classes of nanomaterials are being employed in energy transfer based studies, as well as in colorimetric sensing.

  19. Di-hadron correlations with identified leading hadrons in 200 GeV Au + Au and d + Au collisions at STAR

    Energy Technology Data Exchange (ETDEWEB)

    Adamczyk, L. [AGH University of Science and Technology, Cracow 30-059 (Poland); Adkins, J.K. [University of Kentucky, Lexington, KY, 40506-0055 (United States); Agakishiev, G. [Joint Institute for Nuclear Research, Dubna, 141 980 (Russian Federation); Aggarwal, M.M. [Panjab University, Chandigarh 160014 (India); Ahammed, Z. [Variable Energy Cyclotron Centre, Kolkata 700064 (India); Alekseev, I. [Alikhanov Institute for Theoretical and Experimental Physics, Moscow 117218 (Russian Federation); Aparin, A. [Joint Institute for Nuclear Research, Dubna, 141 980 (Russian Federation); Arkhipkin, D.; Aschenauer, E.C. [Brookhaven National Laboratory, Upton, NY 11973 (United States); Averichev, G.S. [Joint Institute for Nuclear Research, Dubna, 141 980 (Russian Federation); Bai, X. [University of Illinois at Chicago, Chicago, IL 60607 (United States); Bairathi, V. [National Institute of Science Education and Research, Bhubaneswar 751005 (India); Banerjee, A. [Variable Energy Cyclotron Centre, Kolkata 700064 (India); Bellwied, R. [University of Houston, Houston, TX 77204 (United States); Bhasin, A. [University of Jammu, Jammu 180001 (India); Bhati, A.K. [Panjab University, Chandigarh 160014 (India); Bhattarai, P. [University of Texas, Austin, TX 78712 (United States); Bielcik, J. [Czech Technical University in Prague, FNSPE, Prague, 115 19 (Czech Republic); Bielcikova, J. [Nuclear Physics Institute AS CR, 250 68 Řež/Prague (Czech Republic); Bland, L.C. [Brookhaven National Laboratory, Upton, NY 11973 (United States); and others

    2015-12-17

    The STAR Collaboration presents for the first time two-dimensional di-hadron correlations with identified leading hadrons in 200 GeV central Au + Au and minimum-bias d + Au collisions to explore hadronization mechanisms in the quark gluon plasma. The enhancement of the jet-like yield for leading pions in Au + Au data with respect to the d + Au reference and the absence of such an enhancement for leading non-pions (protons and kaons) are discussed within the context of a quark recombination scenario. The correlated yield at large angles, specifically in the ridge region, is found to be significantly higher for leading non-pions than pions. The consistencies of the constituent quark scaling, azimuthal harmonic model and a mini-jet modification model description of the data are tested, providing further constraints on hadronization.

  20. Di-hadron correlations with identified leading hadrons in 200 GeV Au+Au and d+Au collisions at STAR

    Directory of Open Access Journals (Sweden)

    L. Adamczyk

    2015-12-01

    Full Text Available The STAR Collaboration presents for the first time two-dimensional di-hadron correlations with identified leading hadrons in 200 GeV central Au+Au and minimum-bias d+Au collisions to explore hadronization mechanisms in the quark gluon plasma. The enhancement of the jet-like yield for leading pions in Au+Au data with respect to the d+Au reference and the absence of such an enhancement for leading non-pions (protons and kaons are discussed within the context of a quark recombination scenario. The correlated yield at large angles, specifically in the ridge region, is found to be significantly higher for leading non-pions than pions. The consistencies of the constituent quark scaling, azimuthal harmonic model and a mini-jet modification model description of the data are tested, providing further constraints on hadronization.

  1. Di-hadron correlations with identified leading hadrons in 200 GeV Au + Au and d + Au collisions at STAR

    Energy Technology Data Exchange (ETDEWEB)

    Adamczyk, L; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Alekseev, I; Aparin, A; Arkhipkin, D; Aschenauer, EC; Averichev, GS; Bai, X; Bairathi, V; Banerjee, A; Bellwied, R; Bhasin, A; Bhati, AK; Bhattarai, P; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Bouchet, J; Brandenburg, D; Brandin, AV; Bunzarov, I; Butterworth, J; Caines, H; Calderón de la Barca Sánchez, M; Campbell, JM; Cebra, D; Cervantes, MC; Chakaberia, I; Chaloupka, P; Chang, Z; Chattopadhyay, S; Chen, X; Chen, JH; Cheng, J; Cherney, M; Christie, W; Contin, G; Crawford, HJ; Das, S; De Silva, LC; Debbe, RR; Dedovich, TG; Deng, J; Derevschikov, AA; di Ruzza, B; Didenko, L; Dilks, C; Dong, X; Drachenberg, JL; Draper, JE; Du, CM; Dunkelberger, LE; Dunlop, JC; Efimov, LG; Engelage, J; Eppley, G; Esha, R; Evdokimov, O; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Fedorisin, J; Feng, Z; Filip, P; Fisyak, Y; Flores, CE; Fulek, L; Gagliardi, CA; Garand, D; Geurts, F; Gibson, A; Girard, M; Greiner, L; Grosnick, D; Gunarathne, DS; Guo, Y; Gupta, S; Gupta, A; Guryn, W; Hamad, A; Hamed, A; Haque, R; Harris, JW; He, L; Heppelmann, S; Heppelmann, S; Hirsch, A; Hoffmann, GW; Hofman, DJ; Horvat, S; Huang, T; Huang, B; Huang, HZ; Huang, X; Huck, P

    2015-10-23

    The STAR Collaboration presents for the first time two-dimensional di-hadron correlations with identified leading hadrons in 200 GeV central Au + Au and minimum-bias d + Au collisions to explore hadronization mechanisms in the quark gluon plasma. The enhancement of the jet-like yield for leading pions in Au + Au data with respect to the d + Au reference and the absence of such an enhancement for leading non-pions (protons and kaons) are discussed within the context of a quark recombination scenario. The correlated yield at large angles, specifically in the ridge region, is found to be significantly higher for leading non-pions than pions. The consistencies of the constituent quark scaling, azimuthal harmonic model and a mini-jet modification model description of the data are tested, providing further constraints on hadronization.

  2. THE VALENCE OF AU IN AUTE2 AND AUSE STUDIED BY X-RAY-ABSORPTION SPECTROSCOPY

    NARCIS (Netherlands)

    ETTEMA, ARHF; STEGINK, TA; HAAS, C

    The gold compounds AuTe2 and AuSe contain Au atoms in two different chemical surroundings. In the literature these different coordinations have been associated with a difference in valency of the Au atoms. In this paper the occupation of the 5d shell in AuSe and AuTe2 is deduced from a study of the

  3. Thermal desorption of Au from W(001) surface

    CERN Document Server

    Blaszczyszyn, R; Godowski, P J

    2002-01-01

    Adsorption of Au on W(001) at 450 K up to multilayer structures was investigated. Temperature programmed desorption technique was used in determination of coverage dependent desorption energy (region up to one monolayer). Results were discussed in terms of competitive interactions of Au-Au and Au-W atoms. Simple procedure for prediction of faceting behavior on the interface, basing on the desorption data, was postulated. It was deduced that the Au/W(001) interface should not show faceting tendency after thermal treatment. (author)

  4. The nature and scope of gambling in Canada.

    Science.gov (United States)

    Smith, Garry

    2014-05-01

    This paper provides a historical review of gambling in Canada and examines the benefits and shortcomings of present-day Canadian gambling policies and practices. This includes a discussion of provincial and federal government roles in gambling regulation and an overview of problem gambling prevention and treatment initiatives. The gambling studies literature was probed for pertinent information on factors such as historical development, legislative changes, economic conditions and cultural influences that have affected gambling participation and social responsibility strategies in Canada. Two major Criminal Code of Canada amendments (in 1969 and 1985) were pivotal in Canadian gambling expansion. The first decriminalized lotteries and casinos, while the second allowed electronic gambling devices and authorized provinces to operate and regulate gambling. These changes resulted in a radical gambling expansion which, in addition to raising provincial revenues, created public policy concerns. Varying provincial government interpretations of the ambiguous Criminal Code gambling statutes led to a lack of uniformity in how provinces regulate and operate gambling; when gambling expanded, there were no legislative safeguards in place to deal with the personal and societal effects of problem gambling. Subsequent programs designed to prevent and treat problem gambling have not been overly effective. Canadian provinces have a monopoly on gambling within their borders and treat the activity as a profit-driven business enterprise. Problems associated with widespread gambling such as addiction, increased crime, bankruptcy and suicide are seen as minor concerns and not addressed in an aggressive fashion. Given the Canadian federal government's detachment from gambling policy and Canadian provinces' heavy reliance on gambling revenues, little change in the Canadian gambling landscape is anticipated in the near future. © 2013 Society for the Study of Addiction.

  5. Simulation Training in Obstetrics and Gynaecology Residency Programs in Canada.

    Science.gov (United States)

    Sanders, Ari; Wilson, R Douglas

    2015-11-01

    The integration of simulation into residency programs has been slower in obstetrics and gynaecology than in other surgical specialties. The goal of this study was to evaluate the current use of simulation in obstetrics and gynaecology residency programs in Canada. A 19-question survey was developed and distributed to all 16 active and accredited obstetrics and gynaecology residency programs in Canada. The survey was sent to program directors initially, but on occasion was redirected to other faculty members involved in resident education or to senior residents. Survey responses were collected over an 18-month period. Twelve programs responded to the survey (11 complete responses). Eleven programs (92%) reported introducing an obstetrics and gynaecology simulation curriculum into their residency education. All respondents (100%) had access to a simulation centre. Simulation was used to teach various obstetrical and gynaecological skills using different simulation modalities. Barriers to simulation integration were primarily the costs of equipment and space and the need to ensure dedicated time for residents and educators. The majority of programs indicated that it was a priority for them to enhance their simulation curriculum and transition to competency-based resident assessment. Simulation training has increased in obstetrics and gynaecology residency programs. The development of formal simulation curricula for use in obstetrics and gynaecology resident education is in early development. A standardized national simulation curriculum would help facilitate the integration of simulation into obstetrics and gynaecology resident education and aid in the shift to competency-based resident assessment. Obstetrics and gynaecology residency programs need national collaboration (between centres and specialties) to develop a standardized simulation curriculum for use in obstetrics and gynaecology residency programs in Canada.

  6. Vietnam : La cybersanté au service des mères | CRDI - Centre de ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    7 avr. 2015 ... Des chercheurs se servent de la téléphonie mobile pour fournir à des femmes des minorités ethniques au Vietnam des renseignements essentiels sur ... Le projet s'inscrit dans le cadre d'une initiative mondiale, appelée SEARCH, financée par le CRDI, qui étudie les moyens d'intégrer les technologies de ...

  7. [Hyp-Au-Sn9(Hyp)3-Au-Sn9(Hyp)3-Au-Hyp]-: the longest intermetalloid chain compound of tin.

    Science.gov (United States)

    Binder, Mareike; Schrenk, Claudio; Block, Theresa; Pöttgen, Rainer; Schnepf, Andreas

    2017-10-12

    The reaction of the metalloid tin cluster [Sn10(Hyp)4]2- with (Ph3P)Au-SHyp (Hyp = Si(SiMe3)3) gave an intermetalloid cluster [Au3Sn18(Hyp)8]-1, which is the longest intermetalloid chain compound of tin to date. 1 shows a structural resemblance to binary AuSn phases, which is expected for intermetalloid clusters.

  8. Photoswitchable Faraday effect in EuS-Au nanosystems

    Energy Technology Data Exchange (ETDEWEB)

    Kawashima, Akira; Nakanishi, Takayuki; Kitagawa, Yuichi; Fushimi, Koji; Hasegawa, Yasuchika [Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, North-13 West-8, Kita-ku, 060-8628, Sapporo (Japan)

    2016-01-15

    Effective photoswitchable europium sulfide nanocrystals with gold nanoparticles using dithiol (DDT: 1,10-decanedithiol) joint molecules, EuS-Au nanosystems, are demonstrated. The TEM image indicates the formation of EuS-Au nanosystems composed of cube-shaped EuS nanocrystals and spherical Au nanoparticles. Under visible-light irradiation, a drastic change of absorption band of EuS-Au nanosystems at around 600 nm was observed. The Faraday effects of EuS-Au nanosystems were estimated using magnetic circular dichroism (MCD) measurements. The effective change of the MCD spectra of EuS-Au nanosystems under visible-light irradiation was successfully observed at around 670 nm for the first time. The effective reversible changes in MCD spectra with the alternative irradiation cycles of visible light (>440 nm) and dark are also presented. The decrease rate of rotation angle at 670 nm of EuS-Au nanosystems is larger than that of absorbance. These results indicate that the effective change of MCD spectra of EuS-Au nanosystems would be dominated not only by a drastic change of absorption band related to enhanced LSPR of Au nanoparticles but also by specific interaction between EuS and Au in nanosystem under irradiation. Illustration of photoswitch and TEM image of EuS-Au nanosystems. (copyright 2015 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

  9. Introduction au numéro

    Directory of Open Access Journals (Sweden)

    Diane-Gabrielle Tremblay

    2005-07-01

    Full Text Available Depuis quelques années, le thème de l’économie sociale fait couler beaucoup d’encre au Québec, comme ailleurs. Ce numéro présente un bilan de l’économie sociale au Québec, coordonné par Jean-Marc Fontan et Denis Bussières. Toutefois, afin d’avoir un portrait plus global et une perspective théorique sur la question, Interventions économiques a sollicité un texte de Jacques Defourny, afin de compléter le dossier. En effet, l’économie sociale, les secteurs non-marchands, les services de proximi...

  10. Le fonds Gabriel Tarde au CHEVS

    OpenAIRE

    Louise Salmon

    2016-01-01

    Le fonds d’archives « Gabriel Tarde » déposé au CHEVS nous permet de mieux saisir l’érudit autodidacte que fut Gabriel Tarde. De la genèse de sa pensée à ses réseaux de sociabilité, de l’homme de sciences à l’homme de lettres, ses archives témoignent à la fois des usages et des enjeux des ressources archivistiques en histoire, mais elles permettent surtout un renouvellement du regard sur Gabriel Tarde en l’inscrivant au cœur de son temps que fut la fin du XIXème siècle.At the CHEVS in Paris, ...

  11. Identification of sup 186 Au. alpha. activity

    Energy Technology Data Exchange (ETDEWEB)

    Akovali, Y.A.; Toth, K.S. (Oak Ridge National Laboratory, Oak Ridge, TN (USA)); Bingham, C.R. (University of Tennessee, Knoxville, TN (USA) Oak Ridge National Laboratory, Oak Ridge, TN (USA)); Kassim, M.B.; Zhang, M. (University of Tennessee, Knoxville, TN (USA)); Carter, H.K. (UNISOR, Oak Ridge Associated Universities, Oak Ridge, TN (USA)); Hamilton, W.D. (Joint Institute for Heavy Ion Research, Holifield Heavy Ion Research Facility, Oak Ridge, TN (USA) Vanderbilt University, Nashville, TN (USA)); Kormicki, J. (Vanderbilt University, Nashville, TN (USA))

    1990-09-01

    With the use of an on-line isotope separator, the {alpha} activity of {sup 186}Au was identified for the first time. Only one {alpha} group ({ital E}{sub {alpha}}=4653{plus minus}15 keV) was observed. This transition was found not to be in coincidence with {gamma} rays so that it probably proceeds either to the {sup 182}Ir ground state or to a low-lying level whose deexciting {gamma} rays could not be detected. The {alpha}-decay branching was determined to be (8{plus minus}2){times}10{sup {minus}4}% from which a hindrance factor of 1.9{plus minus}0.9 was deduced. The 4653-keV {alpha} transition must therefore connect the 3{sup {minus}} {sup 186}Au ground state with a {sup 182}Ir level with the same spin and configuration.

  12. Au Based Nanocomposites Towards Plasmonic Applications

    Science.gov (United States)

    Panniello, A.; Curri, M. L.; Placido, T.; Reboud, V.; Kehagias, N.; Sotomayor Torres, C. M.; Mecerreyes, D.; Agostiano, A.; Striccoli, M.

    2010-06-01

    Incorporation of nano-sized metals in polymers can transfer their unique features to the host matrix, providing nanocomposite materials with improved optical, electric, magnetic and mechanical properties. In this work, colloidal Au nanorods have been incorporated into PMMA based random co-polymer, properly functionalized with amino groups and the optical and morphological properties of the resulting nanocomposite have been investigated by spectroscopic and AFM measurements. Au nanorods have demonstrated to preserve the plasmon absorption and to retain morphological features upon the incorporation, thus making the final metal modified polymer composite exploitable for the fabrication of plasmonic devices. The prepared nanocomposites have been then patterned by Nano Imprint Lithography technique in order to demonstrate the viability of the materials towards optical applications.

  13. Near-infrared-responsive, superparamagnetic Au@Co nanochains

    Directory of Open Access Journals (Sweden)

    Varadee Vittur

    2017-08-01

    Full Text Available This manuscript describes a new type of nanomaterial, namely superparamagnetic Au@Co nanochains with optical extinctions in the near infrared (NIR. The Au@Co nanochains were synthesized via a one-pot galvanic replacement route involving a redox-transmetalation process in aqueous medium, where Au salt was reduced to form Au shells on Co seed templates, affording hollow Au@Co nanochains. The Au shells serve not only as a protective coating for the Co nanochain cores, but also to give rise to the optical properties of these unique nanostructures. Importantly, these bifunctional, magneto-optical Au@Co nanochains combine the advantages of nanophotonics (extinction at ca. 900 nm and nanomagnetism (superparamagnetism and provide a potentially useful new nanoarchitecture for biomedical or catalytic applications that can benefit from both activation by light and manipulation using an external magnetic field.

  14. Tuning the collective switching behavior of azobenzene/Au hybrid materials: flexible versus rigid azobenzene backbones and Au(111) surfaces versus curved Au nanoparticles.

    Science.gov (United States)

    Liu, Chunyan; Zheng, Dong; Hu, Weigang; Zhu, Qiang; Tian, Ziqi; Zhao, Jun; Zhu, Yan; Ma, Jing

    2017-11-09

    The combination of photo-responsive azobenzene (AB) and biocompatible Au nanomaterials possesses potential applications in diverse fields such as biosensing and thermotherapy. To explore the influence of azobenzene moieties and Au substrates on the collective switching behavior, two different azobenzene derivatives (rigid biphenyl-controlled versus flexible alkoxyl chain-linked) and three different Au substrates (a planar Au(111) surface, curved Au 102 (SR) 44 and Au 25 (SR) 18 clusters) were chosen to form six Au@AB combinations. A reactive molecular dynamics (RMD) model considering both the torsion and inversion path was implemented to simulate the collective photo-induced cis-to-trans switching process of AB monolayers on Au substrates. The major driving force for isomerization is demonstrated to be the torsion of the C-N[double bond, length as m-dash]N-C dihedral angle, in addition to the minor contribution from an inversion pathway. The isomerization process can be divided into the preliminary conformation switching stage and the later relaxation stage, in which a gradual self-organization is observed for 40 ps. The Au substrate affects the packing structure of the AB monolayer, while the choice of different kinds of ABs tunes the intermolecular interaction in the monolayer. Flexible alkoxyl-linked F-AB may achieve much faster conversion on Au clusters than on the surface. For rigid biphenyl-based R-AB anchored on Au nanoparticles (AuNPs), a competitive torsion between the biphenyl and C-N[double bond, length as m-dash]N-C dihedral may delay the C-N[double bond, length as m-dash]N-C dihedral torsion and the following isomerization process. After the R-AB molecules were anchored on the Au(111) surface, the strong π-π stacking between biphenyl units accelerates the collective isomerization process. A curvature-dependent effect is observed for R-AB SAMs on different-sized substrates. The cooperation between functional AB monolayers and the Au substrate

  15. Wait times for gastroenterology consultation in Canada: The patients’ perspective

    Science.gov (United States)

    Paterson, WG; Barkun, AN; Hopman, WM; Leddin, DJ; Paré, P; Petrunia, DM; Sewitch, MJ; Switzer, C; van Zanten, S Veldhuyzen

    2010-01-01

    Long wait times for health care have become a significant issue in Canada. As part of the Canadian Association of Gastroenterology’s Human Resource initiative, a questionnaire was developed to survey patients regarding wait times for initial gastroenterology consultation and its impact. A total of 916 patients in six cities from across Canada completed the questionnaire at the time of initial consultation. Self-reported wait times varied widely, with 26.8% of respondents reporting waiting less than two weeks, 52.4% less than one month, 77.1% less than three months, 12.5% reported waiting longer than six months and 3.6% longer than one year. One-third of patients believed their wait time was too long, with 9% rating their wait time as ‘far too long’; 96.4% believed that maximal wait time should be less than three months, 78.9% believed it should be less than one month and 40.3% believed it should be less than two weeks. Of those working or attending school, 22.6% reported missing at least one day of work or school because of their symptoms in the month before their appointment, and 9.0% reported missing five or more days in the preceding month. A total of 20.2% of respondents reported being very worried about having a serious disease (ie, scored 6 or higher on 7-point Likert scale), and 17.6% and 14.8%, respectively, reported that their symptoms caused major impairment of social functioning and with the activities of daily living. These data suggest that a significant proportion of Canadians with digestive problems are not satisfied with their wait time for gastroenterology consultation. Furthermore, while awaiting consultation, many patients experience an impaired quality of life because of their gastrointestinal symptoms. PMID:20186353

  16. Openness initiative

    Energy Technology Data Exchange (ETDEWEB)

    Duncan, S.S. [Los Alamos National Lab., NM (United States)

    1995-12-31

    Although antinuclear campaigns seem to be effective, public communication and education efforts on low-level radioactive waste have mixed results. Attempts at public information programs on low-level radioactive waste still focus on influencing public opinion. A question then is: {open_quotes}Is it preferable to have a program focus on public education that will empower individuals to make informed decisions rather than trying to influence them in their decisions?{close_quotes} To address this question, a case study with both quantitative and qualitative data will be used. The Ohio Low-Level Radioactive Waste Education Program has a goal to provide people with information they want/need to make their own decisions. The program initiated its efforts by conducting a statewide survey to determine information needed by people and where they turned for that information. This presentation reports data from the survey and then explores the program development process in which programs were designed and presented using the information. Pre and post data from the programs reveal attitude and knowledge shifts.

  17. Measurement of $\\pi^{0}$ and $\\gamma$ in d+Au collisions at $\\sqrt{s_{NN}}=$ 200 GeV by PHENIX experiment

    CERN Document Server

    Chvala, Ondrej

    2009-01-01

    Previous results indicated that high $p_T$ particle suppression in Au+Au interactions is a final state effect, since R$_{dA}$ ratios were compatible with unity, albeit within large experimental errors. It is important to test this conclusion to higher precision since the modification of structure functions may be involved. Recent d+Au data taken in 2008 improve the integrated luminosity by about a factor of thirty compared to the 2003 data. A more precise measurement of both $\\pi^0$ and $\\gamma$ at higher $p_T$ will shed new light on whether the initial state in the heavy nuclei is modified.

  18. Les entreprises au Royaume-Uni

    OpenAIRE

    Appay, Beatrice

    1987-01-01

    This chapter of the book "Formations et emplois qualifiés. Les transformations dans le Bâtiment en France et au Royaume-Uni" analyses management strategies and organisational changes during a period of continuous crisis. The concept of cascading subcontracting (sous-traitance en cascade) introduced here encapsulates a new phenomenon observed simultaneously in the ever changing organisation of work between and within the firms. This is an important result of a research based on a 34 firm monog...

  19. la lutte contre le SIDA au Cameroun

    African Journals Online (AJOL)

    Chantel

    plurielles'). Tsala Tsala, J.-Ph. (2001). Medicina tradicional y sistema de salud publica en Camerun. Siso/Saude. 35: 48 -57. UNICEF, ONUSIDA, OMS (2001). Suivi et évaluation (au niveau local) de la prévention intégrée de la transmission mère-enfant du VIH dans les pays à revenus faibles.(doc ined. Projet 03/2001). 156.

  20. Le CRDI au Népal

    International Development Research Centre (IDRC) Digital Library (Canada)

    et visant à évaluer et à faire connaître les innovations en matière de production agricole, de transformation et de mise en marché. Le CRDI collabore avec le Fonds international de développement agricole à la mise sur pied de ce réseau, dont les membres sont reliés au moyen de technologies numériques. TE. K. G. U. R.

  1. Interstellar Pickup Ion Observations to 38 au

    Science.gov (United States)

    McComas, D. J.; Zirnstein, E. J.; Bzowski, M.; Elliott, H. A.; Randol, B.; Schwadron, N. A.; Sokół, J. M.; Szalay, J. R.; Olkin, C.; Spencer, J.; Stern, A.; Weaver, H.

    2017-11-01

    We provide the first direct observations of interstellar H+ and He+ pickup ions in the solar wind from 22 to 38 au. We use the Vasyliunas and Siscoe model functional form to quantify the pickup ion distributions, and while the fit parameters generally lie outside their physically expected ranges, this form allows fits that quantify variations in the pickup H+ properties with distance. By ∼20 au, the pickup ions already provide the dominant internal pressure in the solar wind. We determine the radial trends and extrapolate them to the termination shock at ∼90 au, where the pickup H+ to core solar wind density reaches ∼0.14. The pickup H+ temperature and thermal pressure increase from 22 to 38 au, indicating additional heating of the pickup ions. This produces very large extrapolated ratios of pickup H+ to solar wind temperature and pressure, and an extrapolated ratio of the pickup ion pressure to the solar wind dynamic pressure at the termination shock of ∼0.16. Such a large ratio has profound implications for moderating the termination shock and the overall outer heliospheric interaction. We also identify suprathermal tails in the H+ spectra and complex features in the He+ spectra, likely indicating variations in the pickup ion history and processing. Finally, we discover enhancements in both H+ and He+ populations just below their cutoff energies, which may be associated with enhanced local pickup. This study serves to document the release and serves as a citable reference of these pickup ion data for broad community use and analysis.

  2. Functionalized Au@Ag-Au nanoparticles as an optical and SERS dual probe for lateral flow sensing.

    Science.gov (United States)

    Bai, Tingting; Wang, Meng; Cao, Min; Zhang, Juan; Zhang, Kangzhen; Zhou, Ping; Liu, Zhengxia; Liu, Ying; Guo, Zhirui; Lu, Xiang

    2018-02-14

    Lateral flow assay strips (LFASs) with Au nanoparticles (NPs) have been widely used as a probe for biomarkers in point-of-care testing; however, there still remain challenges in detection sensitivity and quantitative analysis. In this study, we developed a surface-enhanced Raman scattering (SERS)-based LFAS for quantitative analysis of a biomarker in the low concentration range. Moreover, apart from conventional Au NPs, three other types of citrate-capped Au-Ag bimetallic NPs: Au core with Ag shell NPs (Au@Ag NPs), rattle-like Au core in Ag-Au shell NPs (Au@Ag-Au NPs) and Ag-Au NPs were prepared and functionalized, and their solution-based SERS activities were comprehensively studied by experimental measurement and theoretical analysis. The results clearly indicated that the citrate-capped Au@Ag-Au NPs exhibited the highest SERS activity among the probes tested. Au@Ag-Au NPs were used as both optical and SERS probes in a SERS-based LFAS. In the presence of the analyte at high concentrations, a purple color appeared in the test zone. Highly sensitive and quantitative analysis was realized by measurement of SERS signals from the test lines. One of the most specific markers for cardiac injury, cardiac troponin I (cTnI), was chosen as the detection model. The detection limit of the SERS-based LFAS for cardiac troponin I was 0.09 ng/mL, lowered by nearly 50 times compared with visual results, and could be further lowered by optimization. These results demonstrated that the SERS-based LFAS using citrate-capped Au@Ag-Au NPs as probes can be a powerful tool for highly sensitive and quantitative detection of biomarkers. Graphical abstract A surface-enhanced Raman scattering (SERS)-based lateral flow assay strip using rattle-like Au core in Ag-Au shell (Au@Ag-Au) nanoparticles as probes was developed for quantitative analysis of a biomarker, with a detection limit nearly 50 times lower than that of visual assessment. C control line, T test line.

  3. The Hybridisation of Higher Education in Canada

    Directory of Open Access Journals (Sweden)

    Douglas Shale

    2002-01-01

    Full Text Available Canada's postsecondary institutions are becoming increasingly involved with technology enhanced learning, generally under the rubric of distance education. Growth and activity in distance education stems from rapid developments in communication and information technologies such as videoconferencing and the Internet. This case study focuses on the use of new technologies, primarily within the context of higher education institutions operating in Canada's English speaking provinces. Capitalising on the interactive capabilities of "new" learning technologies, some distance education providers are starting to behave more like conventional educational institutions in terms of forming study groups and student cohorts. Conversely, new telecommunications technologies are having a reverse impact on traditional classroom settings, and as a result conventional universities are beginning to establish administrative structures reflective of those used by distance education providers. When viewed in tandem, these trends reflect growing convergence between conventional and distance learning modes, leading to the hybridisation of higher education in Canada.

  4. A photoresponsive Au25 nanocluster protected by azobenzene derivative thiolates

    Science.gov (United States)

    Negishi, Yuichi; Kamimura, Ukyo; Ide, Mao; Hirayama, Michiyo

    2012-06-01

    An Au25 cluster protected by azobenzene derivative thiolates (S-Az) ([Au25(S-Az)18]-) was synthesized with the aim of producing a photoresponsive Au25 cluster. The matrix-assisted laser desorption/ionization mass spectrum of the product revealed that [Au25(S-Az)18]- was synthesized in high purity. Optical absorption spectra of [Au25(S-Az)18]- obtained before and after photoirradiation suggest that the azobenzenes in the ligands of Au25(S-Az)18 isomerize with an efficiency of nearly 100%, both from the trans to cis conformation and from the cis to trans conformation. Furthermore, the redox potential and optical absorption of Au25(S-Az)18 were found to change reversibly due to photoisomerization of azobenzenes.An Au25 cluster protected by azobenzene derivative thiolates (S-Az) ([Au25(S-Az)18]-) was synthesized with the aim of producing a photoresponsive Au25 cluster. The matrix-assisted laser desorption/ionization mass spectrum of the product revealed that [Au25(S-Az)18]- was synthesized in high purity. Optical absorption spectra of [Au25(S-Az)18]- obtained before and after photoirradiation suggest that the azobenzenes in the ligands of Au25(S-Az)18 isomerize with an efficiency of nearly 100%, both from the trans to cis conformation and from the cis to trans conformation. Furthermore, the redox potential and optical absorption of Au25(S-Az)18 were found to change reversibly due to photoisomerization of azobenzenes. Electronic supplementary information (ESI) available: Details of the experimental procedure and characterization of the products. See DOI: 10.1039/c2nr30830d

  5. Consensus canadien sur la nutrition féminine : adolescence, reproduction, ménopause et au-delà.

    Science.gov (United States)

    O'Connor, Deborah L; Blake, Jennifer; Bell, Rhonda; Bowen, Angela; Callum, Jeannie; Fenton, Shanna; Gray-Donald, Katherine; Rossiter, Melissa; Adamo, Kristi; Brett, Kendra; Khatri, Nasreen; Robinson, Nicole; Tumback, Lindsay; Cheung, Anthony

    2016-06-01

    Doter les professionnels de la santé du Canada de connaissances et d'outils de base, afin qu'ils puissent prodiguer des conseils nutritionnels aux femmes tout au long de leur cycle de vie. RéSULTATS: L'alimentation optimale a fait l'objet d'une évaluation tout au long du cycle de vie de la femme. Elle a porté en particulier sur l'adolescence, la préconception, la grossesse, la période post-partum, la ménopause et au-delà. Le présent guide fournit d'abord des directives abrégées à l'intention de toutes les femmes. Elles sont suivies de chapitres proposant un examen des données probantes, ainsi que des recommandations sur la promotion d'une alimentation saine et d'un poids santé à chaque étape de la vie. Par ailleurs, tous les chapitres présentent une analyse de nutriments d'intérêt particulier, ainsi que d'autres aspects uniques à chaque étape de la vie. DONNéES PROBANTES: Des documents publiés, des rapports d'organismes gouvernementaux et de santé, des lignes directrices de pratique clinique, de la documentation parallèle et des extraits de manuels ont servi à étayer les recommandations formulées dans le présent document. L'évaluation de la qualité des données probantes repose sur les critères décrits dans le rapport du Groupe d'étude canadien sur les soins de santé préventifs. CHAPITRE 2 : CONSEILS GéNéRAUX SUR L'ALIMENTATION FéMININE: Déclarations Sommaires Recommandations CHAPITRE 3 : ALIMENTATION DE L'ADOLESCENTE: Déclarations Sommaires Recommandations CHAPITRE 4 : ALIMENTATION PRéCONCEPTIONNELLE: Déclarations Sommaires Recommandations CHAPITRE 5 : ALIMENTATION PENDANT LA GROSSESSE: Déclarations Sommaires Recommandations CHAPITRE 6 : ALIMENTATION ET LACTATION POST-PARTUM: Déclarations Sommaires Recommandations CHAPITRE 7 : ALIMENTATION PENDANT LA MéNOPAUSE ET AU-DELà: Déclarations Sommaires Recommandations. Copyright © 2016 The Society of Obstetricians and Gynaecologists of Canada/La Société des obst

  6. FDG PET/CT in initial staging and early response to chemotherapy assessment of paediatric rhabdomyosarcomas; Apport de la TEP/TDM au {sup 18}FDG dans la stadification initiale et l'evaluation precoce de la reponse therapeutique des rhabdomyosarcomes pediatriques

    Energy Technology Data Exchange (ETDEWEB)

    Eugene, T.; Ansquer, C.; Oudoux, A.; Carlier, T.; Kraeber-Bodere, T.; Bodet-Milin, C. [Services de medecine nucleaire, CHU Hotel Dieu, 44 - Nantes (France); Corradini, N.; Thomas, C. [Services d' oncologie pediatrique, CHU Hotel Dieu, 44 - Nantes (France); Dupas, B. [Service de radiologie, CHU Hotel Dieu, 44 - Nantes (France)

    2010-12-15

    Purpose: The objective of this study was to retrospectively evaluate the impact of positron emission tomography/computed tomography (PET/CT) using fluorine-18-fluorodeoxyglucose (FDG), in comparison with conventional imaging modalities (CIM), for initial staging and early therapy assessment in paediatric rhabdomyosarcoma. Patients and methods: Prior to treatment, 18 patients (age range, 9 months to 18 years) with histologically proven rhabdomyosarcoma underwent FDG PET/CT in addition to CIM (magnetic resonance imaging of primary site, whole body CT and bone scintigraphy). After three courses of chemotherapy, 12 patients underwent FDG PET/CT in addition to CIM. RECIST criteria and visual analysis of FDG uptake were used for assessment of response. The standard of reference was determined by an interdisciplinary tumor board based on imaging material, histopathology and follow-up data (median = 5 years). Results: PET/CT sensitivity was superior to CIM's concerning lymph node involvement (100% versus 83%, respectively) and metastases detection (100% versus 50%, respectively). PET/CT results changed therapeutic management in 11% of cases. After three courses of chemotherapy, the rate of complete response was 66% with PET/CT versus 8% with CIM. Five percent of patients relapsed during follow-up (median = 5 years). Conclusion: This study confirms that PET/CT depicts important additional information in initial staging of paediatric rhabdomyosarcomas and suggests a superior prognostic value of PET/CT in early response to chemotherapy assessment. (authors)

  7. Photocatalysis enhancement of Au/BFO nanoparticles using plasmon resonance of Au NPs

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Yan; Cai, Zhongyang; Ma, Xueming, E-mail: xmma@phy.ecnu.edu.cn

    2015-12-15

    BiFeO{sub 3} (BFO) nanoparticles was synthesized via sol–gel technique, and successfully loaded with small sizes of gold nanoparticles (Au NPs) by impregnation-reduction method to extremely enhance the BFO photocatalytic activity. The obviously stronger optical absorption of Au/BFO observed from the UV–vis diffuse reflectance spectrum confirmed that the surface plasmon resonance (SPR) effect occured on the surface of Au NPs. And the surface plasmon-induced localized electric field could allow the formation of electron/hole pairs in the near surface region of BFO which can migrate to the surface without undergoing electron/hole (e{sup −}/h{sup +}) pair recombination. The more electrons and holes formed, the more ·OH will be generated to decompose the CR solution. When the gold loading in Au/BFO nanoparticles is 3.36 wt%, the obtained Au/BFO catalyst exhibits best photocatalytic activity evaluated by photocatalysis degradation of Congo red (CR) solution under the visible light irradiation.

  8. Study on Oxidation of Cu and Cu3Au Surfaces with Hyperthermal Oxygen Molecular Beam

    Science.gov (United States)

    Okada, Michio; Teraoka, Yuden

    Corrosion wastes more than a few percent of the world's GDP every year. The initial stage of the corrosion is one of the central topics in material science. The oxidation is one of the major corrosion processes of metals. Thus, the study of the oxidation process on metal surfaces is generally interesting in various fields of science and technology. The growth of a protective thin surface layer, which prevents further oxidation into bulk of a metal, requires the formation of a homogeneous film. One simple way for the protection of underlying metals is surface alloying, combining different substances to form multi-component surfaces. The surface alloying leads to the formation of a protective oxide layer due to the preferential oxidation of one component, possibly with surface segregation. Copper and copper alloys have wide industrial applications, and therefore are of interest for studies of oxidation mechanism, especially in the Cu2O formation. Cu forms the stable Cu2O, while Au does not form a stable oxide and is not soluble into stable Cu2O. Thus, the Cu-Au alloy system is ideal for investigating the effect of alloying on the formation of protective layer against further oxidation into bulk. Here, we introduce our recent comparative studies of the oxidation of Cu(100) and Cu3Au(100) with hyperthermal O2 molecular beam and discuss why Cu3Au(100) is protective against the oxidation.

  9. A first-principles study of NO adsorption and oxidation on Au(111) surface.

    Science.gov (United States)

    Zhang, Wenhua; Li, Zhenyu; Luo, Yi; Yang, Jinlong

    2008-10-07

    Density functional theory and slab models are employed to study NO molecule adsorption and reaction on clean and atomic oxygen precovered Au(111) surfaces. While clean Au(111) surface is catalytically inert and can only weakly adsorb NO, an atomic oxygen precovered Au(111) surface is found to be very active to NO. On the clean surface, NO prefers to bond at the onefold on-top surface site with a tilted geometry. On 0.33 ML (monolayer) oxygen precovered surface NO reacts with chemisorbed oxygen to form chemisorbed NO(2) by conquering a small energy barrier about 0.18 eV, and the desorption energy of NO(2) is 0.64 eV. On 1.0 ML oxygen coverage surface, no barrier is found while NO reacts with precovered oxygen. The desorption energy of NO(2) is 0.03 eV. The desorption of NO(2) is the rate determining step on both surfaces and the overall reaction barriers are 0.64 and 0.03 eV, respectively. The activation energies depend on the initial coverage of oxygen, which compare favorably with experiments on Au surface with different oxygen coverages.

  10. Photoelectric properties of ZnS/Au/ZnS transparent conductive tri-layer films

    Science.gov (United States)

    Wang, Caifeng; Hu, Bo

    2017-09-01

    ZnS/Au/ZnS tri-layer films are deposited on quartz glass by pulsed laser deposition (PLD) at room temperature, and have been annealed in air at different temperatures. The effect of annealing temperature on the optical and electrical properties of ZnS/Au/ZnS tri-layer films is investigated. X-ray diffraction (XRD) patterns show that the increase in annealing temperature improves the crystallinity of the structures. Scanning electron microscope (SEM) images of the samples show that the particle size becomes larger as the annealing temperature increases. Moreover, with the increase of annealing temperature, sheet resistance of the tri-layer films decreases initially, and increases further by increasing the annealing temperature to 300 °C. High quality ZnS/Au/ZnS tri-layer films with the sheet resistance of 27 Ω/sq and the maximum optical transmittance of 86.2% in the visible light region (400-800 nm) are obtained when the sample is annealed at 200 °C. The figure of merit is calculated to evaluate the performance of ZnS/Au/ZnS tri-layer films.

  11. Virus-templated Au and Au/Pt Core/shell Nanowires and Their Electrocatalytic Activitives for Fuel Cell Applications

    Science.gov (United States)

    LEE, YOUJIN; KIM, JUNHYUNG; YUN, DONG SOO; NAM, YOON SUNG; SHAO-HORN, YANG; BELCHER, ANGELA M.

    2014-01-01

    A facile synthetic route was developed to make Au nanowires (NWs) from surfactant-mediated bio-mineralization of a genetically engineered M13 phage with specific Au binding peptides. From the selective interaction between Au binding M13 phage and Au ions in aqueous solution, Au NWs with uniform diameter were synthesized at room temperature with yields greater than 98 % without the need for size selection. The diameters of Au NWs were controlled from 10 nm to 50 nm. The Au NWs were found to be active for electrocatalytic oxidation of CO molecules for all sizes, where the activity was highly dependent on the surface facets of Au NWs. This low-temperature high yield method of preparing Au NWs was further extended to the synthesis of Au/Pt core/shell NWs with controlled coverage of Pt shell layers. Electro-catalytic studies of ethanol oxidation with different Pt loading showed enhanced activity relative to a commercial supported Pt catalyst, indicative of the dual functionality of Pt for the ethanol oxidation and Au for the anti-poisoning component of Pt. These new one-dimensional noble metal NWs with controlled compositions could facilitate the design of new alloy materials with tunable properties. PMID:24910712

  12. Au 38 (SPh) 24 : Au 38 Protected with Aromatic Thiolate Ligands

    Energy Technology Data Exchange (ETDEWEB)

    Rambukwella, Milan; Burrage, Shayna; Neubrander, Marie; Baseggio, Oscar; Aprà, Edoardo; Stener, Mauro; Fortunelli, Alessandro; Dass, Amala

    2017-03-21

    Au38(SR)24 is one of the most extensively investigated gold nanomolecules along with Au25(SR)18 and Au144(SR)60. However, so far it has only been prepared using aliphatic-like ligands, where R = –SC6H13, -SC12H25 and –SCH2CH2Ph. Au38(SCH2CH2Ph)24 when reacted with HSPh undergoes core-size conversion to Au36(SPh)24, and existing literature suggest that Au38(SPh)24 cannot be synthesized. Here, contrary to prevailing knowledge, we demonstrate that Au38(SPh)24 can be prepared if the ligand exchanged conditions are optimized, without any formation of Au36(SPh)24. Conclusive evidence is presented in the form of MALDI-MS, ESI-MS characterization, and optical spectra of Au38(SPh)24 in a solid glass form showing distinct differences from that of Au38(S-aliphatic)24. Theoretical analysis confirms experimental assignment of the optical spectrum and shows that the stability of Au38(SPh)24 is comparable to that of its aliphatic analogues, but results from different physical origins, with a significant component of ligand-ligand attractive interactions.

  13. Cronkhite-Canada syndrome associated with schizophrenia.

    Science.gov (United States)

    Nakayama, Masaharu; Muta, Hiromi; Somada, Shinichi; Maeda, Toyoki; Mutoh, Toshitaka; Shimizu, Kanako; Suehiro, Yoko; Hisano, Terumasa; Kurita, Ryo; Shiraishi, Takeshi; Mori, Masaki; Yoshikawa, Yasuji; Tsunetomi, Nobuto; Uchida, Akihiro; Tani, Kenzaburo

    2007-01-01

    Here, we report a case of Cronkhite-Canada syndrome in a patient with schizophrenia. A 64-year-old man, who had been diagnosed as having a schizophrenic disorder at the age of 30, presented with alopecia, atrophic nail changes, hyperpigmentation of the skin, and inflammatory polyposis of the stomach and colon. Endoscopic ultrasonography of the stomach and colon revealed diffuse mucosal thickening with small hypoechoic areas, corresponding to edema of the lamina propria. After treatment with parenteral hyperalimentation and tranexamic acid, his physical findings and polyposis gradually improved. This is the first report of Cronkhite-Canada syndrome in a patient with schizophrenia.

  14. [Immigration and labor: Australia and Canada compared].

    Science.gov (United States)

    Iacovetta, F; Quinlan, M

    1995-08-01

    "Australia and Canada share...a common colonial history and many similarities in geography, economy, demography, etc., as well as a substantial anti-non anglo-celtic immigrant tradition, in spite of their being immigration countries. Those similarities and differences are analyzed here, as far as labor migration and relationships between immigrant and local labor are concerned. The arrival of European labor first, Asian later, was perceived similarly by both Australia and Canada, combining racial prejudice and unions' hostility towards contract labor migration as well as towards assisted migration. The evolution of those difficult relations through the 19th and 20th centuries is analyzed here." (SUMMARY IN ENG) excerpt

  15. The moderating effect of sociodemographic factors on the predictive power of self-rated health for mortality in Canada

    Directory of Open Access Journals (Sweden)

    James Falconer

    2017-04-01

    Full Text Available Self-rated health is a reliable predictor for mortality, but its predictive power varies depending on social characteristics. This study tests the moderating effect of age, sex, education, and income on the power of self-rated health to predict mortality in Canada using data from the National Population Health Survey. Predictive power trajectories are modelled using time-series generalized estimating equation logistic regression. Findings show that self-rated health is a predictor for mortality up to 14 years prior to death in Canada, and is weakly moderated by income and education, and age/sex interactions. Self-rated health remains reliable across population sub-groups in Canada. La santé auto-évaluée est un prédicteur fiable de la mortalité, mais son pouvoir prédictif varie en fonction des caractéristiques sociales. Cette étude examine l'effet modérateur de l'âge, du sexe, de l'éducation, et du revenu sur le pouvoir de la santé auto-évaluée pour prédire la mortalité au Canada utilisant des données de l'Enquête nationale sur la santé de la population. Les trajectoires de puissance prédictive sont modélisées avec une régression logistique de l'équation d'estimation généralisée. Les résultats montrent que la santé auto-évaluée est un prédicteur de la mortalité jusqu'à 14 ans avant le décès au Canada, et est faiblement modérée par le revenu, l'éducation, et les interactions entre l'âge et le sexe. La santé auto-évaluée demeure valide parmi les sous-groupes de la population du Canada.

  16. Au99(SPh)42 nanomolecules: aromatic thiolate ligand induced conversion of Au144(SCH2CH2Ph)60.

    Science.gov (United States)

    Nimmala, Praneeth Reddy; Dass, Amala

    2014-12-10

    A new aromatic thiolate protected gold nanomolecule Au99(SPh)42 has been synthesized by reacting the highly stable Au144(SCH2CH2Ph)60 with thiophenol, HSPh. The ubiquitous Au144(SR)60 is known for its high stability even at elevated temperature and in the presence of excess thiol. This report demonstrates for the first time the reactivity of the Au144(SCH2CH2Ph)60 with thiophenol to form a different 99-Au atom species. The resulting Au99(SPh)42 compound, however, is unreactive and highly stable in the presence of excess aromatic thiol. The molecular formula of the title compound is determined by high resolution electrospray mass spectrometry (ESI-MS) and confirmed by the preparation of the 99-atom nanomolecule using two ligands, namely, Au99(SPh)42 and Au99(SPh-OMe)42. This mass spectrometry study is an unprecedented advance in nanoparticle reaction monitoring, in studying the 144-atom to 99-atom size evolution at such high m/z (∼12k) and resolution. The optical and electrochemical properties of Au99(SPh)42 are reported. Other substituents on the phenyl group, HS-Ph-X, where X = -F, -CH3, -OCH3, also show the Au144 to Au99 core size conversion, suggesting minimal electronic effects for these substituents. Control experiments were conducted by reacting Au144(SCH2CH2Ph)60 with HS-(CH2)n-Ph (where n = 1 and 2), bulky ligands like adamantanethiol and cyclohexanethiol. It was observed that conversion of Au144 to Au99 occurs only when the phenyl group is directly attached to the thiol, suggesting that the formation of a 99-atom species is largely influenced by aromaticity of the ligand and less so on the bulkiness of the ligand.

  17. Analysis of crack initiation in the vicinity of an interface in brittle materials. Applications to ceramic matrix composites and nuclear fuels; Analyse de la fissuration au voisinage d'une interface dans les materiaux fragiles. Applications aux composites a matrice ceramique et aux combustibles nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Poitou, B

    2007-11-15

    In this study, criterions are proposed to describe crack initiation in the vicinity of an interface in brittle bi-materials. The purpose is to provide a guide for the elaboration of ceramic multi-layer structures being able to develop damage tolerance by promoting crack deflection along interfaces. Several cracking mechanisms are analyzed, like the competition between the deflection of a primary crack along the interface or its penetration in the second layer. This work is first completed in a general case and is then used to describe the crack deviation at the interface in ceramic matrix composites and nuclear fuels. In this last part, experimental tests are carried out to determine the material fracture properties needed to the deflection criteria. An optimization of the fuel coating can be proposed in order to increase its toughness. (author)

  18. Microdrill Initiative - Initial Market Evaluation

    Energy Technology Data Exchange (ETDEWEB)

    Spears & Associates, Inc

    2003-07-01

    The U.S. Department of Energy (DOE) is launching a major research and development initiative to create a small, fast, inexpensive and environmentally friendly rig for drilling 5000 feet boreholes to investigate potential oil and gas reservoirs. DOE wishes to get input from petroleum industry operators, service companies and equipment suppliers on the operation and application of this coiled-tubing-based drilling unit. To that end, DOE has asked Spears & Associates, Inc. (SAI) to prepare a special state-of-the-market report and assist during a DOE-sponsored project-scoping workshop in Albuquerque near the end of April 2003. The scope of the project is four-fold: (1) Evaluate the history, status and future of demand for very small bore-hole drilling; (2) Measure the market for coiled tubing drilling and describe the state-of-the-art; (3) Identify companies and individuals who should have an interest in micro drilling and invite them to the DOE workshop; and (4) Participate in 3 concurrent workshop sessions, record and evaluate participant comments and report workshop conclusions.

  19. AuScope research infrastructure - supporting Australian mineral discovery

    Science.gov (United States)

    McInnes, B.; Rawling, T.

    2016-12-01

    Earth and geospatial scientists are heavy users of data products. When industry geologists access spatial data from the field and the exploration office they require data products that are discoverable, searchable, interoperable and attributed with robust metadata. Over the last decade AuScope has utilised NCRIS funding to provide a variety of data products including geophysical data (reflection and passive seismic, magnetotellurics and gravity), GIS layers from state and national geological survey organisations, hyperspectral core logging (National Virtual Core Library) and time-series geospatial data from GNSS and VLBI instruments - all delivered using AuScope GRID technologies based on the Spatial Information Services Stack (SiSS). Perhaps one of the best examples of collaboration to deliver data products to industry users is the National Mineral Library. Working with researchers at Curtin Universities John de Laeter Centre and ANDS, AuScope has also supported the development of a Laboratory Information Management System (LIMS). The project has produced an entirely new workflow, based around a TESCAN TIMA field emission scanning electron microscope, that allows metadata to be collected and recorded from the sample collection and preparation right through to data delivery and publication. This process has facilitated the scanning of a large stockpile of mineral samples from across Western Australia that will produce a state-wide Mineral Library, allowing mineral explorers to better understand the composition of critical rock outcrop samples from all over the state. This new NCRIS supported initiative provides a dataset that underpins both academic and applied research programs and is important for the economic future of Australia. Mining companies do a lot of heavy mineral analysis in research and development but, because there isn't a baseline for mineralogy across each state, it is difficult to have full confidence in the heavy mineral data. This creates an

  20. Facile synthesis of thick films of poly(methyl methacrylate), poly(styrene), and poly(vinyl pyridine) from Au surfaces.

    Science.gov (United States)

    Saha, Sampa; Bruening, Merlin L; Baker, Gregory L

    2011-08-01

    Atom transfer radical polymerization (ATRP) is commonly used to grow polymer brushes from Au surfaces, but the resulting film thicknesses are usually significantly less than with ATRP from SiO(2) substrates. On Au, growth of poly(methyl methacrylate) (PMMA) blocks from poly(tert-butyl acrylate) brushes occurs more rapidly than growth of PMMA from initiator monolayers, suggesting that the disparity between growth rates from Au and SiO(2) stems from the Au surface. Radical quenching by electron transfer from Au is probably not the termination mechanism because polymerization from thin, cross-linked initiators gives film thicknesses that are essentially the same as the thicknesses of films grown from SiO(2) under the same polymerization conditions. However, this result is consistent with termination through desorption of thiols from noncross-linked films, and reaction of these thiols with growing polymer chains. The enhanced stability of cross-linked initiators allows ATRP at temperatures up to ∼100 °C and enables the growth of thick films of PMMA (350 nm), polystyrene (120 nm) and poly(vinyl pyridine) (200 nm) from Au surfaces in 1 h. At temperatures >100 °C, the polymer brush layers delaminate as large area films.

  1. Charge transport through O-deficient Au-MgO-Au junctions

    KAUST Repository

    Fadlallah, M. M.

    2009-12-29

    Metal-oxide heterostructures have been attracting considerable attention in recent years due to various technological applications. We present results of electronic structure and transport calculations for the Au-MgO-Au (metal-insulator-metal) heterostructure based on density-functional theory and the nonequilibrium Green’s functions method. The dependence of the conductance of the heterostructure on the thickness of the MgO interlayer and the interface spacing is studied. In addition, we address the effects of O vacancies. We observe deviations from an exponentially suppressed conductance with growing interlayer thickness caused by Au-O chemical bonds. Electronic states tracing back to O vacancies can increase the conductance. Furthermore, this effect can be enhanced by enlarging the interface spacing as the vacancy induced Mg states are shifted toward the Fermi energy.

  2. initiative des conseils subventionnaires de la recherche scientifique ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Dorine Odongo

    INITIATIVE DES CONSEILS SUBVENTIONNAIRES DE LA RECHERCHE SCIENTIFIQUE EN. AFRIQUE SUBSAHARIENNE. MANIFESTATION D'INTÉRÊT. 1. Pays et organisme partenaire. 1.1 Pays. 1.2 Nom de l'organisme partenaire. 1.3 Dirigeant de l'organisme partenaire. 1.4 Affiliation au ministère gouvernemental.

  3. Home Economics/Family Studies Curricula in Canada: Current Status and Challenges = Programmes d'etudes en economie familiale et sciences familiale au Canada: Situation actuelle et enjeux.

    Science.gov (United States)

    Peterat, Linda; Khamasi, Jennifer

    1996-01-01

    Replicating a 1984 study, a survey of home economics/family studies coordinators in the 10 Canadian provinces found the following: home economics has expanded into grades lower than 8; required courses have increased; core curriculum has not changed radically; there is increased focus on family well-being; and there is a need to address curriculum…

  4. Canada goose kill statistics: Swan Lake Public Hunting Area

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This document discusses how the flexible kill formula for Canada goose hunting at Swan Lake Public Hunting Area was reached. Methods used to collect Canada goose...

  5. All projects related to canada | Page 22 | IDRC - International ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    2017-03-22

    , VULNERABLE GROUPS, Climate change. Region: Malawi, Canada. Program: Food, Environment, and Health. Total Funding: CA$ 566,860.00. Support for Communities affected by Mining in Canada and around the Globe. Project. Founded ...

  6. All projects related to Canada | Page 12 | IDRC - International ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    ... an international platform committed to making governments more open, accountable, and responsive to citizens. Topic: INFORMATION DISSEMINATION, CANADA, Civil society, GOVERNMENT, PRIVATE SECTOR, INTERNATIONAL ORGANIZATIONS. Region: Brazil, Nepal, Nigeria, Canada, United States, Netherlands.

  7. Characters of age, sex and sexual maturity in Canada geese

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This paper discusses the characters of age, sex, and sexual maturity in Canada geese. Present findings are based on trap and/or bag samples of Canada geese. Methods...

  8. Industrial Relations in Canada: Contemporary Comparisons and Change.

    Science.gov (United States)

    Blyton, Paul; Goodman, John, Eds.

    1990-01-01

    Includes "Canadian Industrial Relations: An Introductory Overview" (Blyton, Goodman); "Overview of Canadian Labour Law" (Miller); "Industrial Conflict and Resolution in Canada and Britain" (Haiven); "Collective Bargaining in the Public Sector in Canada" (Calvert); "Canadian Automobile Industry: Work…

  9. From Republicans to Hacktivists: Recent Inclusion Initiatives in Canadian Theatre

    Science.gov (United States)

    Johnston, Kirsty

    2017-01-01

    Could targeted inclusion initiatives press Canada's professional theatre community to tap the vast reserve of disabled people disenfranchised by its current practices? In 2015/2016, several long-standing professional institutions dedicated to fostering Canadian theatre joined with Canadian disability theatre artists in order to mark and understand…

  10. A Survey of Ethics Curriculum in Canadian Initial Teacher Education

    Science.gov (United States)

    Maxwell, Bruce; Tremblay-Laprise, Audrée-Anne; Filion, Marianne

    2015-01-01

    This paper reports the results of a survey on ethics education in initial teacher education in Canada. Using an online survey and an academic calendar analysis, data was collected on ethics course requirements, perceptions about ethics content, institutional factors mediating the implementation of ethics courses, and teaching and learning…

  11. Exploring Other Practicum Possibilities: An Action Research Initiative

    Science.gov (United States)

    Robinson, Daniel B.; Walters, William

    2016-01-01

    This article summarizes an action research project undertaken at a teacher education institution in Canada. The action research was implemented in an effort to respond to initial observations related to some practicum limitations. In an effort to seek a "solution" to these limitations, a modified practicum model was piloted with a small…

  12. Elliptic flow in Au+Au collisions at $\\sqrt{S_{NN}}$=130 GeV

    CERN Document Server

    Ackermann, K H; Adler, C; Ahammed, Z; Ahmad, S; Allgower, C; Amsbaugh, J; Anderson, M; Anderssen, E; Arnesen, H; Arnold, L; Averichev, G S; Baldwin, A R; Balewski, J T; Barannikova, O Yu; Barnby, L S; Baudot, J; Beddo, M E; Bekele, S; Belaga, V V; Bellwied, R; Bennett, S; Bercovitz, J; Berger, J; Betts, W; Bichsel, H; Bieser, F; Bland, L C; Bloomer, M A; Blyth, C O; Böhm, J; Bonner, B E; Bonnet, D; Bossingham, R R; Botlo, M; Boucham, A; Bouillo, N; Bouvier, S; Bradley, K; Brady, F P; Braithwaite, E S; Braithwaite, W; Brandin, A B; Brown, R L; Brugalette, G; Byrd, C; Caines, H; Calderón de la Barca-Sanchez, M; Cardenas, A; Carr, L; Carroll, J; Castillo, J; Caylor, B; Cebra, D; Chathopadhyay, S; Chen, M L; Chen, W; Chen, Y; Chernenko, S P; Cherney, M; Chikanian, A; Choi, B; Chrin, J; Christie, W; Coffin, J P; Conin, L; Consiglio, C; Cormier, T M; Cramer, J G; Crawford, H J; Danilov, V I; Dayton, D; De Mello, M; Deng, W S; Derevshchikov, A A; Dialinas, M; Díaz, H; De Young, P A; Didenko, L; Dimassimo, D; Dioguardi, J; Dominik, Wojciech; Drancourt, C; Draper, J E; Dunin, V B; Dunlop, J C; Eckardt, V; Edwards, W R; Efimov, L G; Eggert, T; Emelyanov, V I; Engelage, J; Eppley, G; Erazmus, B; Etkin, A; Fachini, P; Feliciano, C; Ferenc, D; Ferguson, M I; Fessler, H; Finch, E; Fine, V; Fisyak, Yu; Flierl, D; Flores, I; Foley, Kenneth J; Fritz, D; Gagunashvili, N D; Gans, J; Gazdzicki, M; Germain, M; Geurts, F J M; Ghazikhanian, V; Gojak, C; Grabski, J; Grachov, O A; Grau, M; Greiner, D E; Greiner, L; Grigoriev, V; Grosnick, D P; Gross, J; Guilloux, G; Gushin, E M; Hall, J; Hallman, T J; Hardtke, D; Harper, G; Harris, J W; He, P; Heffner, M; Heppelmann, S; Herston, T; Hill, D; Hippolyte, B; Hirsch, A; Hjort, E; Hoffmann, G W; Horsley, M; Howe, M; Huang, H Z; Humanic, T J; Hümmler, H; Hunt, W; Hunter, J; Igo, G; Ishihara, A; Ivanshin, Yu I; Jacobs, P; Jacobs, W W; Jacobson, S; Jared, R; Jensen, P; Johnson, I; Jones, P G; Judd, E; Kaneta, M; Kaplan, M; Keane, D; Kenney, V P; Khodinov, A; Klay, J L; Klein, S R; Klyachko, A A; Koehler, G; Konstantinov, A S; Kormilitsyne, V; Kotchenda, L; Kotov, I V; Kovalenko, A D; Krämer, M; Kravtsov, P; Krüger, K; Krupien, T; Kuczewski, P; Kühn, C E; Kunde, G J; Kunz, C L; Kutuev, R K; Kuznetsov, A A; Lakehal-Ayat, L; Lamont, M A C; Landgraf, J M; Lange, S; Lansdell, C P; Lasiuk, B; Laue, F; Lebedev, A; LeCompte, T J; Leonhardt, W; Leontiev, V M; Leszczynski, P; Le Vine, M J; Li, Q; Li, Z; Liaw, C J; Lin, J; Lindenbaum, S J; Lindenstruth, V; Lindstrom, P J; Lisa, M A; Liu, H; Ljubicic, T; Llope, W J; Lo Curto, G; Long, H; Longacre, R S; López-Noriega, M; Lopiano, D; Love, W A; Lutz, Jean Robert; Lynn, D; Madansky, L; Maier, R S; Majka, R; Maliszewski, A; Margetis, S; Marks, K; Marstaller, R; Martin, L; Marx, J; Matis, H S; Matulenko, Yu A; Matyushevsky, E A; McParland, C P; McShane, T S; Meier, J; Melnik, Yu M; Meshchanin, A P; Middlekamp, P; Mikhalin, N; Miller, B; Milosevich, Z; Minaev, N G; Minor, B; Mitchell, J; Mogavero, E; Moiseenko, V A; Moltz, D M; Moore, C F; Morozov, V; Morse, R; De Moura, M M; Munhoz, M G; Mutchler, G S; Nelson, J M; Nevski, P; Ngo, T; Nguyen, M; Nguyen, T; Nikitin, V A; Nogach, L V; Noggle, T; Norman, B; Nurushev, S B; Nussbaum, T; Nystrand, J; Odyniec, Grazyna Janina; Ogawa, A; Ogilvie, C A; Olchanski, K; Oldenburg, M; Olson, D; Ososkov, G A; Ott, G; Padrazo, D; Paic, G; Pandey, S U; Panebratsev, Yu A; Panitkin, S Y; Pavlinov, A I; Pawlak, T; Pentia, M; Perevozchikov, V; Peryt, W; Petrov, V; Pinganaud, W; Pirogov, S; Platner, E D; Pluta, J; Polk, I; Porile, N T; Porter, J; Poskanzer, A M; Potrebenikova, E V; Prindle, D J; Pruneau, C A; Puskar-Pasewicz, J; Rai, G; Rasson, J E; Ravel, O; Ray, R L; Razin, S V; Reichhold, D M; Reid, J; Renfordt, R E; Retière, F; Ridiger, A; Riso, J; Ritter, H G; Roberts, J B; Röhrich, D; Rogachevski, O V; Romero, J L; Roy, C; Russ, D; Rykov, V L; Sakrejda, I; Sánchez, R; Sandler, Z; Sandweiss, J; Sappenfield, P; Saulys, A C; Savin, I A; Schambach, J; Scharenberg, R P; Scheblien, J; Scheetz, R; Schlüter, R; Schmitz, N; Schröder, L S; Schulz, M; Schüttauf, A; Sedlmeir, J; Seger, J E; Seliverstov, D M; Seyboth, J; Seyboth, P; Seymour, R; Shakaliev, E I; Shestermanov, K E; Shi, Y; Shimansky, S S; Shuman, D B; Shvetcov, V S; Skoro, G P; Smirnov, N; Smykov, L P; Snellings, R; Solberg, K; Sowinski, J; Spinka, H M; Srivastava, B; Stephenson, E J; Stock, Reinhard; Stolpovsky, A; Stone, N; Stone, R; Strikhanov, M N; Stringfellow, B C; Ströbele, H; Struck, C; Suaide, A A P; Sugarbaker, E R; Suire, C; Symons, T J M; Takahashi, J; Tang, A H; Tarchini, A; Tarzian, J; Thomas, J H; Tikhomirov, V; Szanto de Toledo, A; Tonse, S R; Trainor, T; Trentalange, S; Tokarev, M; Tonjes, M B; Trofimov, V N; Tsai, O; Turner, K; Ullrich, T S; Underwood, D G; Vakula, I; Van Buren, G; Van der Molen, A; Vanyashin, A V; Vasilevskii, I M; Vasilev, A N; Vigdor, S E; Visser, G; Voloshin, S A; Vu, C; Wang, F; Ward, H; Weerasundara, D D; Weidenbach, R; Wells, R; Wenaus, T J; Westfall, G D; Whitfield, J P; Whitten, C; Wieman, H H; Willson, R; Wilson, K; Wirth, J; Wisdom, J; Wissink, S W; Witt, R; Wolf, J; Wood, L; Xu, N; Xu, Z; Yakutin, A E; Yamamoto, E; Yang, J; Yepes, P; Yokosawa, A; Yurevich, V I; Zanevsky, Yu V; Zhang, J; Zhang, W M; Zhu, J; Zimmerman, D; Zoulkarneev, R; Zubarev, A N

    2001-01-01

    Elliptic flow from nuclear collisions is a hadronic observable sensitive to the early stages of system evolution. We report first results on elliptic flow of charged particles at midrapidity in Au+Au collisions at sqrt(s_NN)=130 GeV using the STAR TPC at RHIC. The elliptic flow signal, v_2, averaged over transverse momentum, reaches values of about 6% for relatively peripheral collisions and decreases for the more central collisions. This can be interpreted as the observation of a higher degree of thermalization than at lower collision energies. Pseudorapidity and transverse momentum dependence of elliptic flow are also presented.

  13. D and $^{3}He$ production in $\\sqrt{s}$ = 130 GeV Au + Au collisions

    CERN Document Server

    Adler, C; Allgower, C; Amonett, J; Anderson, B D; Anderson, M; Averichev, G S; Balewski, J T; Barannikova, O Yu; Barnby, L S; Baudot, J; Bekele, S; Belaga, V V; Bellwied, R; Berger, J; Bichsel, H; Bland, L C; Blyth, C O; Bonner, B E; Boucham, A; Brandin, A B; Cadman, R V; Caines, H; Calderón de la Barca-Sanchez, M; Cardenas, A; Carroll, J; Castillo, J; Castro, M; Cebra, D; Chattopadhyay, S; Chen, M L; Chen, Y; Chernenko, S P; Cherney, M; Chikanian, A; Choi, B; Christie, W; Cormier, T M; Cramer, J G; Crawford, H J; De Mello, M; Deng, W S; Derevshchikov, A A; Didenko, L; Draper, J E; Dunin, V B; Dunlop, J C; Eckardt, V; Efimov, L G; Emelianov, V; Engelage, J; Eppley, G; Erazmus, B; Fachini, P; Faine, V; Finch, E; Fisyak, Yu; Flierl, D; Foley, Kenneth J; Fu, J; Gagunashvili, N D; Gans, J; Gaudichet, L; Germain, M; Geurts, F J M; Ghazikhanian, V; Grabski, J; Grachov, O A; Greiner, D E; Grigoriev, V; Guedon, M; Guschin, E; Hallman, T J; Hardtke, D; Harris, J W; Heffner, M; Heppelmann, S; Herston, T; Hippolyte, B; Hirsch, A; Hjort, E; Hoffmann, G W; Horsley, M; Huang, H Z; Humanic, T J; Hümmler, H; Igo, G; Ishihara, A; Ivanshin, Yu I; Jacobs, P; Jacobs, W W; Janik, M; Johnson, I; Jones, P G; Judd, E; Kaneta, M; Kaplan, M; Keane, D; Kisiel, A; Klay, J L; Klein, S R; Klyachko, A A; Konstantinov, A S; Kotchenda, L; Kovalenko, A D; Krämer, M; Kravtsov, P; Krüger, K; Kuhn, C; Kulikov, A V; Kunde, G J; Kunz, C L; Kutuev, R K; Kuznetsov, A A; Lakehal-Ayat, L; Lamas-Valverde, J; Lamont, M A C; Landgraf, J M; Lange, S; Lansdell, C P; Lasiuk, B; Laue, F; Lebedev, A; LeCompte, T J; Lednicky, R; Leontiev, V M; Le Vine, M J; Li, Q; Lindenbaum, S J; Lisa, M A; Ljubicic, T; Llope, W J; Lo Curto, G; Long, H; Longacre, R S; López-Noriega, M; Love, W A; Lynn, D; Majka, R; Margetis, S; Martin, L; Marx, J; Matis, H S; Matulenko, Yu A; McShane, T S; Meissner, F; Melnik, Yu M; Meshchanin, A P; Messer, M; Miller, M L; Milosevich, Z; Minaev, N G; Mitchell, J; Moiseenko, V A; Moltz, D; Moore, C F; Morozov, V; De Moura, M M; Munhoz, M G; Mutchler, G S; Nelson, J M; Nevski, P; Nikitin, V A; Nogach, L V; Norman, B; Nurushev, S B; Odyniec, Grazyna Janina; Ogawa, A; Okorokov, V; Oldenburg, M; Oson, D; Paic, G; Pandey, S U; Panebratsev, Yu A; Panitkin, S Y; Pavlinov, A I; Pawlak, T; Perevozchikov, V; Peryt, W; Petrov, V A; Platner, E D; Pluta, J; Porile, N; Porter, J; Poskanzer, A M; Potrebenikova, E V; Prindle, D J; Pruneau, C A; Radomski, S; Rai, G; Ravel, O; Ray, R L; Razin, S V; Reichhold, D M; Reid, J G; Retière, F; Ridiger, A; Ritter, H G; Roberts, J B; Rogachevski, O V; Romero, J L; Roy, C; Russ, D; Rykov, V L; Sakrejda, I; Sandweiss, J; Saulys, A C; Savin, I; Schambach, J; Scharenberg, R P; Schmitz, N; Schröder, L S; Schüttauf, A; Schweda, K; Seger, J E; Seliverstov, D M; Seyboth, P; Shahaliev, E; Shestermanov, K E; Shimansky, S S; Shvetcov, V S; Skoro, G P; Smirnov, N; Snellings, R; Sowinski, J; Spinka, H M; Srivastava, B; Stephenson, E J; Stock, Reinhard; Stolpovsky, A; Strikhanov, M N; Stringfellow, B C; Struck, C; Suaide, A A P; Sugarbaker, E R; Suire, C; Sumbera, M; Symons, T J M; Szanto de Toledo, A; Szarwas, P; Takahashi, J; Tang, A H; Thomas, J H; Tikhomirov, V; Trainor, T A; Trentalange, S; Tokarev, M; Tonjes, M B; Trofimov, V; Tsai, O; Turner, K; Ullrich, T S; Underwood, D G; Van Buren, G; Van der Molen, A; Vanyashin, A V; Vasilevski, I M; Vasilev, A N; Vigdor, S E; Voloshin, S A; Wang, F; Ward, H; Watson, J W; Wells, R; Wenaus, T J; Westfall, G D; Whitten, C; Wieman, H H; Willson, R; Wissink, S W; Witt, R; Xu, N; Xu, Z; Yakutin, A E; Yamamoto, E; Yang, J; Yepes, P; Yokosawa, A; Yurevich, V I; Zanevsky, Yu V; Zborovský, I; Zhang, H; Zhang, W M; Zoulkarneev, R; Zubarev, A N; 10.1103/PhysRevLett.87.262301

    2001-01-01

    The first measurements of light antinucleus production in Au + Au collisions at the Relativistic Heavy-Ion Collider are reported. The observed production rates for d and /sup 3/He are much larger than in lower energy nucleus-nucleus collisions. A coalescence model analysis of the yields indicates that there is little or no increase in the antinucleon freeze-out volume compared to collisions at CERN SPS energy. These analyses also indicate that the 3He freeze-out volume is smaller than the d freeze-out volume. (22 refs).

  14. Nuclear Stopping in Central Au+Au Collisions at RHIC Energies

    Directory of Open Access Journals (Sweden)

    Ying Yuan

    2014-01-01

    Full Text Available Nuclear stopping in central Au+Au collisions at relativistic heavy-ion collider (RHIC energies is studied in the framework of a cascade mode and the modified ultrarelativistic quantum molecular dynamics (UrQMD transport model. In the modified mode, the mean field potentials of both formed and “preformed” hadrons (from string fragmentation are considered. It is found that the nuclear stopping is increasingly influenced by the mean-field potentials in the projectile and target regions with the increase of the reaction energy. In the central region, the calculations of the cascade model considering the modifying factor can describe the experimental data of the PHOBOS collaboration.

  15. Coût des soins de santé attribuables au tabagisme au Cambodge ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Au Cambodge, l'incidence de la tuberculose et du tabagisme est élevée de sorte que le coût du tabagisme comprendra aussi le coût des décès " supplémentaires " occasionnés par la tuberculose liée au tabagisme. Dans ce pays, les systèmes d'information sur la santé ne sont ni rigoureux, ni fiables. Par conséquent, on ne ...

  16. Relativistic multireference many-body perturbation theory calculations on Au64+ - Au69+ ions

    Energy Technology Data Exchange (ETDEWEB)

    Vilkas, M J; Ishikawa, Y; Trabert, E

    2006-03-31

    Many-body perturbation theory (MBPT) calculations are an adequate tool for the description of the structure of highly charged multi-electron ions and for the analysis of their spectra. They demonstrate this by way of a re-investigation of n=3, {Delta}n=0 transitions in the EUV spectra of Na-, Mg-, Al-like, and Si-like ions of Au that have been obtained previously by heavy-ion accelerator based beam-foil spectroscopy. They discuss the evidence and propose several revisions on the basis of the multi-reference many-body perturbation theory calculations of Ne- through P-like ions of Au.

  17. Measurements of direct photons in Au+Au collisions with PHENIX

    CERN Document Server

    Bannier, Benjamin

    2014-01-01

    The PHENIX experiment has published direct photon yields and elliptic flow coefficients $v_2$ from Au+Au collisions at RHIC energies. These results have sparked much theoretical discussion. The measured yields and flow parameters are difficult to reconcile in current model calculations of thermal radiation based on hydrodynamic time evolution of the collision volume. Our latest analyses which use high statistics data from the 2007 and 2010 runs allow the determination of direct photon yields with finer granularity in centrality and photon momentum and down to $p_T$ as low as 0.4 GeV/$c$. We will summarize the current status and present new results from PHENIX.

  18. Social Structures and the Occupational Composition of Skilled Worker Immigrants to Canada

    Directory of Open Access Journals (Sweden)

    Dryburgh, Heather

    2005-01-01

    Full Text Available EnglishThe individual decision to immigrate is made in the context of larger socialstructures that influence the composition of the economic immigrant populationover time. Over the last 20 years, economic immigrants to Canada have facedchanging selection policies, cycles of economic recession and growth, increaseddemand for information technology skills, women's increased labour forceparticipation and an aging labour force. Using data from Statistics Canada'sLongitudinal Immigration Database (IMDB, this paper examines the flow ofeconomic immigrants to Canada by their occupational composition from 1980 to2000. Relative to Canadians, when all immigrants from this period are groupedtogether, their economic integration is slow and does not reach parity withCanadians before 16 years. Among skilled worker immigrants, whereas theearlier cohorts did well but did not improve much over time, later cohorts startedoff in a relatively worse position, but early indications show a fairly steep slopeto better relative average earnings. These differences support the need toexamine immigrant integration by both the class of immigrant and the context atthe time of immigration.FrenchLa décision d’immigrer est une décision personnelle prise dans le plus largecontexte des structures sociales qui, à leur tour, exercent une influence sur lacomposition de la population immigrante selon les époques. Pendant les vingtannées dernières, les immigrants économiques au Canada ont dû faire face à deschangements de polices de sélection, à des cycles de récession et de croissanceéconomique, à une demande accrue des techniques d’informatiques, à laparticipation accrue des femmes dans la population active et à une populationactive plus âgée. En s’appuyant sur les données de la Banque de donnéeslongitudinales sur les immigrants (BDIM, cet article examine le fluxd’immigrants économiques au Canada entre 1980 et 2000, selon la compositionde leurs m

  19. Projected Population Size and Age Structure for Canada and Provinces: With and Without International Migration

    Directory of Open Access Journals (Sweden)

    Loh, Shirley

    2007-01-01

    Full Text Available EnglishThis paper examines the effect of net international migration on prospectivepopulation growth and age structure in Canada for the next 50 years. It alsoexamines the impact of international migration on provincial growth anddistribution. The procedure used in this study is by comparing two projectedpopulation scenarios, one with international migration and the other withoutinternational migration, based on the latest 2005-based population projections.The analysis of the scenarios shows that the assumed level of internationalmigration which is higher than the current level contributes to a continuousincrease in population over the next 50 years, but has limited effect to prevent oroffset the overall aging trend.FrenchCe document examine l’effet de la migration internationale sur la croissanceprospective de la population et la structure par âge au Canada pour les 50prochaines années. Il examine aussi l’impact de la migration internationale surla croissance et la distribution provinciales. La démarche utilisée dans cetteétude est de comparer les deux scénarios de population projetée l’un avecmigration internationale et l’autre sans migration internationale, selon lesdernières projections de population de 2005. L’analyse des scénarios démontreque le niveau présumé de migration internationale, plus élevé que le niveauactuel, contribue à une croissance continuelle de la population au cours des 50prochaines années, mais a peu d’effet quand à la prévention ou la tendance auvieillissement.

  20. Diversity and convergence of population aging: evidence from China and Canada

    Directory of Open Access Journals (Sweden)

    Légaré, Jacques

    2004-01-01

    Full Text Available EnglishTaking the diversity and the convergence of demographic transitions intoconsideration, it is hypothesized that population aging that occurs in developed countries anddeveloping countries will reflect diversity, but will also show some convergence. In order to testthis hypothesis, the present study compares the population aging experiences of China (1971-2050 andCanada (1911-2050 and places them within the context of the demographic transition. In this paper welearn how, as population ages, these two countries will, through two distinct pathways, arrive atsimilar age structures by the middle of the 21st century. Both the diversity and the convergence ofpopulation aging are shown in this comparative study.FrenchEn constatant la diversité et la convergence des transitions démographiques,nous faisons l'hypothèse que le processus du vieillissement démographiquecomporte également une certaine diversité et montrera une convergence, enparticulier, entre les pays développés et les pays en développement. Afin devérifier cette hypothèse, la présente étude compare les vieillissementsdémographiques en Chine (1971-2050 et au Canada (1911-2050, en lesmettant dans le contexte de la transition démographique. Cet article montre qu’àmesure que vieillit la population, comment ces deux pays arriveront par deuxvoies distinctes à une structure par âge similaire au milieu du XXIème siècle. Ladiversité et la convergence du vieillissement sont toutes deux illustrées danscette étude comparative.

  1. Global Entrepreneurship Monitor - Canada Survey | IDRC ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    They will also allow detailed comparisons with developing countries. This comparative analysis will support dialogue on the following issues: -ways to improve entrepreneurship; -the private sector's role in fostering entrepreneurship; and, -how greater entrepreneurship can contribute to economic development in Canada ...

  2. French Immersion in Canada: Theory and Practice.

    Science.gov (United States)

    Safty, Adel

    1991-01-01

    Reviews the theoretical foundations of French immersion programs in Canada, which are based on early exposure, creation of a natural imitative environment, cross-language interference and support, contextualized learning, and a communicative approach. Describes the practical applications of the theories, immersion program teachers and their roles,…

  3. Information Literacy Training in Canada's Public Libraries

    Science.gov (United States)

    Julien, Heidi; Hoffman, Cameron

    2008-01-01

    The purposes of the study were to explore the role of Canada's public libraries in developing the public's information literacy (IL) skills, to explore current IL training practices, and to explore the perspectives and IL experiences of individuals who visit public libraries to access the Internet. This article documents the second phase of a…

  4. Ethnic identity of older Chinese in Canada.

    Science.gov (United States)

    Lai, Daniel W L

    2012-06-01

    In Canada's multicultural society, ethnic identity is important to the elderly and can influence areas such as access to services, health promotion and care. Often, the complex nature of ethnic identity is underestimated when looking at cultural groups. This study aims to: (a) validate the factor structure of a Chinese ethnic identity measure for older Chinese in Canada, (b) examine the level of ethnic identity of the participants, and (c) examine the correlates of ethnic identity in these older individuals. Using data from a large, national research project on the elderly Chinese in Canada, this study analyzed the results gathered from a total of 2,272 participants. Principal component analysis, maximum-likelihood confirmatory factor analysis, and multiple regression analysis were performed. The results indicated that ethnic identity of the older Chinese is a multi-dimensional construct made up of three factors: (a) culture related activities, (b) community ties, (c) linkage with country of origin, and (d) cultural identification. The findings have provided a better understanding of how ethnic identity can be measured among the aging Chinese population in Canada.

  5. Addiction Medicine in Canada: Challenges and Prospects

    Science.gov (United States)

    el-Guebaly, Nady; Crockford, David; Cirone, Sharon; Kahan, Meldon

    2011-01-01

    In Canada, the qualification of physicians is the jurisdiction of the College of Family Physicians and the Royal College of Physicians and Surgeons. The Colleges have promoted the training of "generalists" in family medicine and "sophisticated generalists" among the traditional specialties, and the development of subspecialties…

  6. Canada thistle phenology in broadbean canopy

    Directory of Open Access Journals (Sweden)

    Marian Wesołowski

    2013-12-01

    Full Text Available Soine of the developmental stages of Canada thistle - Cirsium arvense (L. Scop. (I. emergence and early growth, II. shooting, II. budding, IV. flowering, V. fructification, VI. shedding of fruits on the background of development stages of broad-bean, weeded by herbicides and without that weed-killing substances, were presented in the paper. Phenological observations were carried out on the plants growing on alluvial soil developed from light loam in Zakrz6w near Tarnobrzeg. It was proved that phenological development of Canada thistle, during broad-bean vegetation, depended on course of weather conditions and method of crop care. Emergence of the weed occurred earlier than broad-bean plants during warm and rather dry seasons. In every vegetation period, emergence and early vegetation stage (to 4 leaves seedling of Canada thistle lasted about 3 months, until broad-bean got full pod setting. During wet and cold season (in 2001 the weed emerged also early under herbicide (Afalon 1,5 kg ha-1 condition. Until to broad-bean harvest, Canada thistle attained the finish developmental stages, that means fruiting and fruit shedding. Herbicide treatment delayed the last two stages and limited fruit shedding by plants of Cirsium arvense.

  7. Echinococcus multilocularis in Urban Coyotes, Alberta, Canada

    Science.gov (United States)

    Catalano, Stefano; Lejeune, Manigandan; Liccioli, Stefano; Verocai, Guilherme G.; Gesy, Karen M.; Jenkins, Emily J.; Kutz, Susan J.; Fuentealba, Carmen; Duignan, Padraig J.

    2012-01-01

    Echinococcus multilocularis is a zoonotic parasite in wild canids. We determined its frequency in urban coyotes (Canis latrans) in Alberta, Canada. We detected E. multilocularis in 23 of 91 coyotes in this region. This parasite is a public health concern throughout the Northern Hemisphere, partly because of increased urbanization of wild canids. PMID:23017505

  8. Culture and Community in Canada's Isolated Schools.

    Science.gov (United States)

    Davis, John; Anderson, Kirk; Jamal, Samina

    This paper presents highlights from surveys of some of Canada's most isolated schools, located in northern Labrador, Nunavut, northern Saskatchewan, and northern and interior British Columbia. Most served Inuit or other First Nations communities. Although all schools had contact by phone and most had e-mail, few were accessible by road. Five Inuit…

  9. extérieur du canada

    International Development Research Centre (IDRC) Digital Library (Canada)

    Hakan Mustafa

    RENSEIGNEMENTS GÉNÉRAUX, FISCAUX ET BANCAIRES DU FOURNISSEUR –. EXTÉRIEUR DU CANADA. Veuillez lire attentivement les instructions figurant aux pages 2 et 3 avant de remplir le présent formulaire. Nouveau. Modification. Section 1 : RENSEIGNEMENTS GÉNÉRAUX. Nom du particulier (nom, prénom) ...

  10. Reconsidering the Right to Privacy in Canada

    Science.gov (United States)

    Shade, Leslie Regan

    2008-01-01

    This article argues that post-September 11 political debates and legislation around security necessitates a reconsideration of a right to privacy in Canada. It looks at the proposal for a Canadian Charter of Privacy Rights promoted by Senator Sheila Finestone in the late 1990s and the current challenges of emergent material technologies…

  11. Submarine landslides in Arctic sedimentation: Canada Basin

    Science.gov (United States)

    Mosher, David C.; Shimeld, John; Hutchinson, Deborah R.; Lebedova-Ivanova, N; Chapman, C.

    2016-01-01

    Canada Basin of the Arctic Ocean is the least studied ocean basin in the World. Marine seismic field programs were conducted over the past 6 years using Canadian and American icebreakers. These expeditions acquired more than 14,000 line-km of multibeam bathymetric and multi-channel seismic reflection data over abyssal plain, continental rise and slope regions of Canada Basin; areas where little or no seismic reflection data existed previously. Canada Basin is a turbidite-filled basin with flat-lying reflections correlateable over 100s of km. For the upper half of the sedimentary succession, evidence of sedimentary processes other than turbidity current deposition is rare. The Canadian Archipelago and Beaufort Sea margins host stacked mass transport deposits from which many of these turbidites appear to derive. The stratigraphic succession of the MacKenzie River fan is dominated by mass transport deposits; one such complex is in excess of 132,000 km2 in area and underlies much of the southern abyssal plain. The modern seafloor is also scarred with escarpments and mass failure deposits; evidence that submarine landsliding is an ongoing process. In its latest phase of development, Canada Basin is geomorphologically confined with stable oceanographic structure, resulting in restricted depositional/reworking processes. The sedimentary record, therefore, underscores the significance of mass-transport processes in providing sediments to oceanic abyssal plains as few other basins are able to do.

  12. Alcohol use among immigrants in Ontario, Canada.

    Science.gov (United States)

    Agic, Branka; Mann, Robert E; Tuck, Andrew; Ialomiteanu, Anca; Bondy, Susan; Simich, Laura; Ilie, Gabriela

    2016-03-01

    This study examined prevalence of alcohol consumption among immigrants and the Canadian-born populations of Ontario by ethnic origin, and the association between ethnicity, country of birth, age at arrival, length of residence in Canada and drinking measures. Data were derived from the Centre for Addiction and Mental Health (CAMH) Monitor, a cross-sectional survey of Ontario adults, conducted between January 2005 and December 2010 (n = 13,557). The prevalence of alcohol consumption and risk drinking was generally lower among foreign-born than Canadian-born respondents, but significant variations across ethnic groups were found. In general, foreign-born respondents of European descent reported higher rates of alcohol use and risk drinking than foreign-born respondents from other ethnic groups. We also observed that ethnicity effects varied by whether or not respondents were born in Canada, and by the age at which they arrived in Canada. While previous studies generally found an increase in immigrants' alcohol consumption with years in Canada, our data suggest that longer duration of residence may have either positive or negative effects on immigrants' alcohol use, depending on the country of origin/traditional drinking pattern. More research is needed to explore determinants of alcohol use and risk drinking among immigrants and to identify those groups at highest risk. © 2015 Australasian Professional Society on Alcohol and other Drugs.

  13. Evolving Perspectives on Lyme Borreliosis in Canada

    Science.gov (United States)

    Sperling, JLH; Middelveen, MJ; Klein, D; Sperling, FAH

    2012-01-01

    With cases now documented in every province, Lyme borreliosis (LB) is emerging as a serious public health risk in Canada. Controversy over the contribution of LB to the burden of chronic disease is maintained by difficulty in capturing accurate Canadian statistics, especially early clinical cases of LB. The use of dogs as sentinel species demon-strates that potential contact with Borrelia burgdorferi spirochetes, as detected by C6 peptide, extends across the country. Dissemination of infected ticks by migratory birds and rapid establishment of significant levels of infection have been well described. Canadian public health response has focused on identification of established populations of the tick vectors, Ixodes scapularis and I. pacificus, on the assumption that these are the only important vectors of the disease across Canada. Strains of B. burgdorferi circulating in Canada and the full range of their reservoir species and coinfections remain to be explored. Ongoing surveys and historical records demonstrate that Borrelia-positive Ixodes species are regu-larly present in regions of Canada that have previously been considered to be outside of the ranges of these species in re-cent modeling efforts. We present data demonstrating that human cases of LB are found across the nation. Consequently, physician education and better early diagnoses are needed to prevent long term sequelae. An international perspective will be paramount for developing improved Canadian guidelines that recognize the complexity and diversity of Lyme borreliosis. PMID:23091570

  14. Education of advanced practice nurses in Canada.

    Science.gov (United States)

    Martin-Misener, Ruth; Bryant-Lukosius, Denise; Harbman, Patricia; Donald, Faith; Kaasalainen, Sharon; Carter, Nancy; Kilpatrick, Kelley; DiCenso, Alba

    2010-12-01

    In Canada, education programs for the clinical nurse specialist (CNS) and nurse practitioner (NP) roles began 40 years ago. NP programs are offered in almost all provinces. Education for the CNS role has occurred through graduate nursing programs generically defined as providing preparation for advanced nursing practice. For this paper, we drew on pertinent sections of a scoping review of the literature and key informant interviews conducted for a decision support synthesis on advanced practice nursing to describe the following: (1) history of advanced practice nursing education in Canada, (2) current status of advanced practice nursing education in Canada, (3) curriculum issues, (4) interprofessional education, (5) resources for education and (6) continuing education. Although national frameworks defining advanced nursing practice and NP competencies provide some direction for education programs, Canada does not have countrywide standards of education for either the NP or CNS role. Inconsistency in the educational requirements for primary healthcare NPs continues to cause significant problems and interferes with inter-jurisdictional licensing portability. For both CNSs and NPs, there can be a mismatch between a generalized education and specialized practice. The value of interprofessional education in facilitating effective teamwork is emphasized. Recommendations for future directions for advanced practice nursing education are offered.

  15. Views on world markets - Canada

    Energy Technology Data Exchange (ETDEWEB)

    Passmore, J. [Canadian Wind Energy Association, Ottawa, Ontario (Canada)

    1996-12-31

    If {open_quotes}market{close_quotes} is defined by hardware in the ground (as it should be), then the Canadian wind power market has been virtually non-existent (only 23 MW to date). The potential on the other hand is enormous (6400 MW likely to be developed). This potential has not been pursued because of unregulated electric utility monopolies, lack of political knowledge and interest, and punitive tax treatment for renewables. Recent initiatives including utility restructuring, federal plans for green power procurement, and proposed tax measures suggest that situation has potential for change. Interested parties should start familiarizing themselves with the Canadian players / market now, in order to be ready to move when the time comes (likely in the next three years). 3 tabs.

  16. 77 FR 39624 - Airworthiness Directives; Pratt & Whitney Canada Turboprop Engines

    Science.gov (United States)

    2012-07-05

    ... holidays. Fax: 202-493-2251. For service information identified in this AD, contact Pratt & Whitney Canada...-238-7176; fax: 781-238-7199. SUPPLEMENTARY INFORMATION: Discussion Transport Canada, which is the... information referenced above. We are issuing this AD because we evaluated all information provided by Canada...

  17. PubMed Central Canada: Beyond an Open Access Repository?

    Science.gov (United States)

    Nariani, Rajiv

    2013-01-01

    PubMed Central Canada (PMC Canada) represents a partnership between the Canadian Institutes of Health Research (CIHR), the National Research Council's Canada Institute for Scientific and Technical Information (NRC-CISTI), and the National Library of Medicine of the US. The present study was done to gauge faculty awareness about the CIHR Policy on…

  18. Au/Pd core-shell nanoparticles with varied hollow Au cores for enhanced formic acid oxidation

    Science.gov (United States)

    Hsu, Chiajen; Huang, Chienwen; Hao, Yaowu; Liu, Fuqiang

    2013-03-01

    A facile method has been developed to synthesize Au/Pd core-shell nanoparticles via galvanic replacement of Cu by Pd on hollow Au nanospheres. The unique nanoparticles were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, ultraviolet-visible spectroscopy, and electrochemical measurements. When the concentration of the Au solution was decreased, grain size of the polycrystalline hollow Au nanospheres was reduced, and the structures became highly porous. After the Pd shell formed on these Au nanospheres, the morphology and structure of the Au/Pd nanoparticles varied and hence significantly affected the catalytic properties. The Au/Pd nanoparticles synthesized with reduced Au concentrations showed higher formic acid oxidation activity (0.93 mA cm-2 at 0.3 V) than the commercial Pd black (0.85 mA cm-2 at 0.3 V), suggesting a promising candidate as fuel cell catalysts. In addition, the Au/Pd nanoparticles displayed lower CO-stripping potential, improved stability, and higher durability compared to the Pd black due to their unique core-shell structures tuned by Au core morphologies.

  19. Delusions of power : vanity, folly and the uncertain future of Canada`s hydro giants

    Energy Technology Data Exchange (ETDEWEB)

    Skene, W.

    1997-12-31

    The current state of Canada`s power supply industry was reviewed. The author explained how Canada`s biggest electrical empires (Ontario Hydro, B.C. Hydro and Hydro-Quebec) were forged and how they have influenced not only Canada`s economic development but also how Canadians live their daily lives. He investigates how political and corporate decisions being made today will influence our future ability to have access to a reliable supply of low-cost electricity. The environmental and social costs of alternative power generation were also examined. He outlines the past behaviour of publicly owned utilities which was characterized by overspending and excessive generating capacity. These practices invited the current round of restructuring, deregulation, demonopolization and privatization. He feels that these forces are threatening to break up Canada`s publicly owned and regulated electric power system. Arguments for and against dismantling, selling off, or reorganizing the public utilities were dissected in an attempt to find answers as to how we got ourselves into the current mess. This unprecedented drive for restructuring may turn out to be an event more profound in terms of its implications for our future than the eighteenth century transition from agricultural society to an industrial society. The overall conclusion was that large public utilities, especially those relying on nuclear and fossil-fuel generation, will have to make way for renewable sources. It was predicted that new technologies will be developed that will inevitably lead to the dismantling of the large utilities over time. If we are wise enough to learn from our mistakes, publicly-owned and regulated utilities will continue to be allowed to co-exist with new entrants to provide the reliability and quality of service that competition and new competitive entrants into the field cannot provide. 112 refs.

  20. Conductive Au nanowires regulated by silk fibroin nanofibers

    Science.gov (United States)

    Dong, Bo-Ju; Lu, Qiang

    2014-03-01

    Conductive Au-biopolymer composites have promising applications in tissue engineering such as nerve tissue regeneration. In this study, silk fibroin nanofibers were formed in aqueous solution by regulating silk self-assembly process and then used as template for Au nanowire fabrication. We performed the synthesis of Au seeds by repeating the seeding cycles for several times in order to increase the density of Au seeds on the nanofibers. After electroless plating, densely decorated Au seeds grew into irregularly shaped particles following silk nanofiber to fill the gaps between particles and finally form uniform continuous nanowires. The conductive property of the Au-silk fibroin nanowires was studied with current-voltage ( I-V) measurement. A typical ohmic behavior was observed, which highlighted their potential applications in nerve tissue regeneration.