• 제목/요약/키워드: Canada Ontario

검색결과 72건 처리시간 0.027초

NUCLEAR vs COAL ELECTRICITY GENERATION IN CANADA

  • Kugler G.
    • 원자력산업
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    • 제5권11호통권33호
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    • pp.39-45
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    • 1985
  • In some parts of Canada, such as Ontario, the choice between nuclear and coal is clear : the economics, environmental, and public health effects all favour nuclear. It is recognized that the economics of coal depend largely on the price of coal, which in

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Pervaporation Separation of Binary Organic-Aqueous Liquid Mixtures

  • Rhim, Ji-Won;Huang, Robert Y.M.
    • 한국막학회:학술대회논문집
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    • 한국막학회 1991년도 추계 총회 및 학술발표회
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    • pp.1-3
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    • 1991
  • A novel membrane separation process for the separation of liquid mixture is Pervaporation. The term, 'pervaporation', is a combination of permeation and evaporation, and was first introduced by kober[1] in 1917. In this technique, the liquid mixture in feed is in contact with one side of a dense non-porous membrane and after diffusing through the membrane is removed from the downstream side in the vapor phase, but is usually condensed afterwards to obtain a permeate in liquid from.

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Workplace System Factors of Obstetric Nurses in Northeastern Ontario, Canada: Using a Work Disability Prevention Approach

  • Nowrouzi, Behdin;Lightfoot, Nancy;Carter, Lorraine;Larivere, Michel;Rukholm, Ellen;Belanger-Gardner, Diane
    • Safety and Health at Work
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    • 제6권4호
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    • pp.305-311
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    • 2015
  • Background: The purpose of this study was to examine the relationship nursing personal and workplace system factors (work disability) and work ability index scores in Ontario, Canada. Methods: A total of 111 registered nurses were randomly selected from the total number of registered nurses on staff in the labor, delivery, recovery, and postpartum areas of four northeastern Ontario hospitals. Using a stratified random design approach, 51 participants were randomly selected in four northeastern Ontario cities. Results: A total of 51 (45.9% response rate) online questionnaires were returned and another 60 (54.1% response rate) were completed using the paper format. The obstetric workforce in northeastern Ontario was predominately female (94.6%) with a mean age of 41.9 (standard deviation = 10.2). In the personal systems model, three variables: marital status (p = 0.025), respondent ethnicity (p = 0.026), and mean number of patients per shift (p = 0.049) were significantly contributed to the variance in work ability scores. In the workplace system model, job and career satisfaction (p = 0.026) had a positive influence on work ability scores, while work absenteeism (p = 0.023) demonstrated an inverse relationship with work ability scores. In the combined model, all the predictors were significantly related to work ability scores. Conclusion: Work ability is closely related to job and career satisfaction, and perceived control at work among obstetric nursing. In order to improve work ability, nurses need to work in environments that support them and allow them to be engaged in the decision-making processes.

Changes of Students' Understanding of the Nature of Science After Two and Half Years of Public Science Education in Ontario Canada

  • Park, Hyeran;Woodruff, Earl
    • 과학교육연구지
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    • 제38권1호
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    • pp.57-77
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    • 2014
  • A longitudinal study traced changes in students' understanding of Nature Of science (NOS) through the public secondary science education in Ontario Canada. Although the concepts of NOS are complicated, and students' understandings are not easy to change, not many longitudinal studies have been done across the world. The current study tried to identify the changes of participating students' understandings of NOS for two and half years of public secondary science education in Ontario Canada. Pretest was administered using Views of Nature of Science (VNOS-C) when six participants graduated from a middle school of Toronto. Two and half years of secondary education, the posttest was carried out using the same instrument. After pre and posttest, probing interviews were performed. The analysis of the data was founded on the Standards and the conceptual framework for this study. The findings were that the initial views have little changed. Most examples and explanations the participants provided were from their science classes. Lab activities for confirming the existing laws and theories and observable photos in science textbooks made students regard the knowledge as a truth. Naturally, their knowledge has been expanded for 2 and 1/2 years, but this expansion of scientific knowledge led students toward Universalist views on science. On the other hand, when science was presented with a historical approach or was networked with other concepts, students acknowledged science and scientific knowledge had been induced from inferences as well as observations and experimental results. Based on the findings the authors of this research suggest that educating the knowledge of science should be historical and networked approaches rather than teaching the knowledge as concise and true statements of the nature.

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Response of Barley Genotypes to Fusarium Head Blight under Natural Infection and Artificial Inoculation Conditions

  • Khanal, Raja;Choo, Thin Meiw;Xue, Allen G.;Vigier, Bernard;Savard, Marc E.;Blackwell, Barbara;Wang, Junmei;Yang, Jianming;Martin, Richard A.
    • The Plant Pathology Journal
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    • 제37권5호
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    • pp.455-464
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    • 2021
  • Forty-eight spring barley genotypes were evaluated for deoxynivalenol (DON) concentration under natural infection across 5 years at Harrington, Prince Edward Island. These genotypes were also evaluated for Fusarium head blight (FHB) severity and DON concentration under field nurseries with artificial inoculation of Fusarium graminearum by the grain spawn method across 2 years at Ottawa, Ontario, and one year at Hangzhou, China. Additionally, these genotypes were also evaluated for FHB severity under greenhouse conditions with artificial inoculation of F. graminearum by conidial suspension spray method across 3 years at Ottawa, Ontario. The objective of the study was to investigate if reactions of barley genotypes to artificial FHB inoculation correlate with reactions to natural FHB infection. DON concentration under natural infection was positively correlated with DON concentration (r = 0.47, P < 0.01) and FHB incidence (r = 0.56, P < 0.01) in the artificially inoculated nursery with grain spawn method. Therefore, the grain spawn method can be used to effectively screen for low DON. FHB severity, generated from greenhouse spray, however, was not correlated with DON concentration (r = 0.12, P > 0.05) under natural infection and it was not correlated with DON concentration (r = -0.23, P > 0.05) and FHB incidence (r = 0.19, P > 0.05) in the artificially inoculated nursery with grain spawn method. FHB severity, DON concentration, and yield were affected by year, genotype, and the genotype × year interaction. The effectiveness of greenhouse spray inoculation for indirect selection for low DON concentration requires further studies. Nine of the 48 genotypes were found to contain low DON under natural infection. Island barley had low DON and also had high yield.

A descriptive study of on-farm biosecurity and management practices during the incursion of porcine epidemic diarrhea into Canadian swine herds, 2014

  • Perri, Amanda M.;Poljak, Zvonimir;Dewey, Cate;Harding, John CS.;O'Sullivan, Terri L.
    • Journal of Veterinary Science
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    • 제21권2호
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    • pp.25.1-25.16
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    • 2020
  • Porcine epidemic diarrhea virus (PEDV) emerged into Canada in January 2014, primarily affecting sow herds. Subsequent epidemiological analyses suggested contaminated feed was the most likely transmission pathway. The primary objective of this study was to describe general biosecurity and management practices implemented in PEDV-positive sow herds and matched control herds at the time the virus emerged. The secondary objective was to determine if any of these general biosecurity and farm management practices were important in explaining PEDV infection status from January 22, 2014 to March 1, 2014. A case herd was defined as a swine herd with clinical signs and a positive test result for PEDV. A questionnaire was used to a gather 30-day history of herd management practices, animal movements on/off site, feed management practices, semen deliveries and biosecurity practices for case (n = 8) and control (n = 12) herds, primarily located in Ontario. Data was analyzed using descriptive statistics and random forests (RFs). Case herds were larger in size than control herds. Case herds had more animal movements and non-staff movements onto the site. Also, case herds had higher quantities of pigs delivered, feed deliveries and semen deliveries on-site. The biosecurity practices of case herds were considered more rigorous based on herd management, feed deliveries, transportation and truck driver practices than control herds. The RF model found that the most important variables for predicting herd status were related to herd size and feed management variables. Nonetheless, predictive accuracy of the final RF model was 72%.

Evaluation of Flow and Transport Model in Integrated Surface and Subsurface Systems

  • 김성균;박영진;배광옥;이강근
    • 한국지하수토양환경학회:학술대회논문집
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    • 한국지하수토양환경학회 2005년도 총회 및 춘계학술발표회
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    • pp.324-327
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    • 2005
  • 지하수와 지표수를 연계하여 flow와 transport를 모의하는 프로그램인 HydroSphere를 Canada Ontario주의 Canadian Forces Base Borden에서의 실험 (Abdul ,1985) 자료를 이용하여 평가해 보았고, 유성지역 소유역에서의 강수, 지표수, 지하수의 수소동위원소 모니터링 (박준형, 고용권, 박경우, 정형재, 김교원, 2003) 자료를 이용하여 평가해 볼 예정이다.

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