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Sample records for ontario phwr pickering-7 reactor

  1. Dynamic Analysis of Coolant Channel and Its Internals of Indian 540 MWe PHWR Reactor

    Directory of Open Access Journals (Sweden)

    N. Dharmaraju

    2008-01-01

    Full Text Available The horizontal coolant channel is one of the important parts of primary heat transport system in PHWR type of reactors. There are in all 392 channels in the core of Indian 540 MWe reactor. Each channel houses 13 natural uranium fuel bundles and shielding and sealing plugs one each on either side of the channel. The heavy water coolant flows through the coolant channel and carries the nuclear heat to outside the core for steam generation and power production in the turbo-generator. India has commissioned one 540 MWe PHWR reactor in September 2005 and another similar unit will be going into operation very shortly. For a complete dynamic study of the channel and its internals under the influence of high coolant flow, experimental and modeling studies have been carried out. A good correlation has been achieved between the results of experimental and analytical models. The operating life of a typical coolant channel typically ranges from 10 to 15 full-power years. Towards the end of its operating life, its health monitoring becomes an important activity. Vibration diagnosis plays an important role as a tool for life management of coolant. Through the study of dynamic characteristics of the coolant channel under simulated loading condition, an attempt has been made to develop a diagnostics to monitor the health of the coolant channel over its operating life. A study has been also carried out to characterize the fuel vibration under different flow condition.

  2. The test channel groups in the Wolsong-3 reactor for the evaluation of PHWR fuel integrity in the two phase flow condition

    Energy Technology Data Exchange (ETDEWEB)

    Jun, Ji Su; Cho, Moon Sung

    2004-07-01

    This report intends to select the test channel groups in the Wolsong-3 reactor for the evaluation of PHWR fuel integrity in the two phase flow condition. First, a detailed work schedule for fuel inspection, fuel loading, storage of the discharged fuel, and in-bay visual and dimensional examination was established on the CIGAR work plan of the Wolsong-3 reactor. According to the schedule, it is necessary to suggest the appropriate test channel groups with two phase flow before the new fuel loading. For the selection of the test channel groups, the distributions of the channel flow rate and the channel exit quality are calculated by the NUCIRC code with the monthly measured operation data of the Wolsong-3 reactor during May 2001 to December 2002. The monthly calculated data could sort out the channels with the channel exit quality greater than 0.2%, in the high power channels with the power higher than 6300 kW and the flow rate greater than 25.5 kg/s, and in the low power channels with the power higher than 4800 kW and less than 5300 kW. Based on the frequency rank of these sorted channels, O16 channel with thirty other channels in the high power region and D17 channel with ten other channels in the low power region are suggested as the test channel groups.

  3. Status of generic actions items and safety analysis system of PHWR

    Energy Technology Data Exchange (ETDEWEB)

    Park, Joo Hwan; Min, Byung Joo

    2001-05-01

    This report described the review results of a GAIs(Generic Action Item) currently issued on safety analysis of PHWR(Pressurized Heavy Water Reactor) and the research activities and positions to solve the GAIs in each country which possess PHWRs. eviewing the Final Safety Analysis Report for Wolsong-2/3/4 Units, the safety analysis methodology, classification for accident scenarios, safety analysis codes, their interface, etc.. were described. From the present review report, it is intended to establish the CANDU safety analysis system by providing the better understandings and development plans for the safety analysis of PHWR. esults.

  4. Nuclear resurrection: Must Ontario fire up more reactors to power its future?

    Energy Technology Data Exchange (ETDEWEB)

    Dewar, E.

    2005-06-01

    An extensive historical review of Canada's nuclear reactor program is provided. The author also examines the role of nuclear power generation in Ontario's energy future, concluding that given the limited capacity for additional hydro power, and the uncertainty of natural gas supply, nuclear power will likely remain a significant source of energy for Ontario for the foreseeable future. Nevertheless, the challenge to bring nuclear power generation under control remains, considering that despite the best efforts of generations of nuclear engineers, politicians and regulators the industry appears close to being unmanageable, and Ontario taxpayers are likely to be paying its old debt far into the future. The current contingent of reactors is rapidly aging and the disposal of used nuclear fuel still defies a satisfactory solution. These formidable challenges notwithstanding, best estimates are that Ontario has few viable alternatives, and will have to embark on a new cycle of nuclear construction before the end of this decade.

  5. Robust FOPI controller design for power control of PHWR under step-back condition

    Energy Technology Data Exchange (ETDEWEB)

    Bhase, S.S., E-mail: swapnil.sbhase@gmail.com; Patre, B.M., E-mail: bmpatre@ieee.org

    2014-07-01

    Highlights: • Robust stabilization of a highly nonlinear PHWR process. • A robust FOPI controller for a typical fractional-order NIOPTD-II plant. • Flat phase constraint is proposed to obtain a controller giving wide flat phase at gain crossover frequency. • FOPI controller designed for an operating condition of the PHWR produces a constant Phase margin for wide range of frequencies. • The proposed FOPI controller gives better performance compared to existing in the literature. - Abstract: This paper presents a stabilizing fractional-order proportional integral (FOPI) controller design for the power control of a highly nonlinear Pressurized Heavy Water Reactor (PHWR) under step-back condition. A single robust FOPI controller is designed utilizing stability boundary locus method for eight nuclear reactor models of the PHWR linearized at different operating points. A set of stabilizing controller parameters is obtained for a typical fractional-order two non-integer order plus time delay (NIOPTD-II) model of the reactor satisfying design specifications of phase margin and gain crossover frequency. Then a flat phase constraint is developed to find a controller giving wide flat phase at the desired gain crossover frequency. The controller obtained is found to give iso-damped closed-loop response for all linearized models of PHWR. Simulation results show that the proposed FOPI controller applied for active step-back in the reactor give a deadbeat tracking performance without any undershoot for all operating points, defined for variation in initial power level or control rod drop. The efficacy of the proposed FOPI controller is verified by comparing its performance with existing methods in the literature.

  6. ASTEC adaptation for PHWR limited core damage accident analysis

    Energy Technology Data Exchange (ETDEWEB)

    Majumdar, P., E-mail: pmajum@barc.gov.in [Bhabha Atomic Research Centre, Reactor Safety Division, Mumbai 400085 (India); Chatterjee, B.; Lele, H.G. [Bhabha Atomic Research Centre, Reactor Safety Division, Mumbai 400085 (India); Guillard, G.; Fichot, F. [Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSN-RES/SAG, Cadarache, 13115 Saint-Paul-lez-Durance (France)

    2014-06-01

    Under limited core damage accidents (LCDAs) of Pressurized Heavy Water Reactor (PHWR), coolable geometry of the channel might be retained thanks to the presence of moderator heat sink. Indeed, the pressure tube is amenable to creep deformation at high temperature due to internal pressure and fuel bundles weight. Partial or complete circumferential contact between pressure tube and calandria tube aids heat dissipation to the moderator. A new module has been developed by Bhabha Atomic Research Centre (BARC) for simulating this phenomenon which is specific to horizontal-type of reactors. It requires additional calculation of pressure tube sagging/ballooning and temperature field in the circumferential direction. The module is well validated with available experimental results concerning pressure tube deformation and the associated heat transfer in the area of contact. It is then used in analysing typical LCDAs scenarios in Indian PHWR under low and medium internal pressure conditions. This module is implemented in the ASTEC IRSN-GRS severe accident code version under development and will thus be available in the next major version V2.1.

  7. Feasibility study on production of Co-60 in PHWR

    Energy Technology Data Exchange (ETDEWEB)

    Park, Kyung Bae; Han, Hyon Soo; Joo, Po Kook

    2000-05-01

    The purpose of this study is to analyze the safeties and the economics for Co-60 production from Wolsung PHWR and to verify the feasibility on the manufacturing of the final Co-60 source for industrial irradiation. The feasibility of reactor conversion was carried out with KEPCO collaboration. Through the site survey on the experience of Gentililly-2 in Canada, a feasibility of plant conversion, changes in design, equipment and tools for Co-60 production was verified. It was estimated that the reactor conversion would not impose adverse impact on plant safety. For the encapsulation of radiation source and storage of the final products, a modification of concrete hot cell at KAERI was primary concerns. The installation and improvement of facilities are needed to avoid cross contamination and extra radiation exposure. Main items for these are pressure gauge, separated HEPA filter the ceiling separation, extra-shielding and ceiling hoist system. At present, storage pool has got admission based on 400 kCi. But it is necessary to seismic analysis and design improvement of shielding to store 10 MCi (Co-60) which is the estimated Co-60 capacity produced by 3 PHWRs. According to present investigation, a production of Co-60 by PHWR and RIPE was seemed to be an economically feasible business and it was also expected that a joint venture will be able to realize by cooperation with MDS Nordion Co.

  8. Integrated probabilistic assessment for DHC initiation, growth and leak-before-break of PHWR pressure tubes

    Energy Technology Data Exchange (ETDEWEB)

    Oh, Young-Jin [Power Engineering Research Institute, KEPCO Engineering and Construction, 188 Gumi-dong, Bundang-gu, Seongnam-si, Gyeonggi-do 463-870 (Korea, Republic of); Chang, Yoon-Suk, E-mail: yschang@khu.ac.kr [Department of Nuclear Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 446-701 (Korea, Republic of)

    2014-08-15

    Highlights: • We develop an integrated approach for probabilistic assessment of PHWR pressure tube. • We examine probabilities of DHC initiation, growth, penetration and LBB failure. • The proposed approach is helpful to calculate rupture probabilities in reactor flaws even in the case of very low rupture probability. - Abstract: A few hundred zirconium alloy pressure tubes in a pressurized heavy water reactor (PHWR) serve as the nuclear fuel channel, as well as the reactor coolant pressure boundary. The pressure tubes are inspected periodically and a fitness-for-service assessment (FFSA) must be conducted if any flaw is detected in the inspection. A Canadian standard provides FFSA procedures of PHWR pressure tubes, which include probabilistic assessment for flaws considering delayed hydride cracking (DHC) and leak-before-break (LBB). In the present study, an integrated approach with detailed stepwise calculation procedures and integration methodology for probabilistic assessment of pressure tube was developed. In the first step of this approach, a probability of the DHC initiation, growth and penetration for single initial flaw is calculated. In the next step, a probability of LBB failure, which means tube rupture, for single through-wall crack (TWC) is calculated. Finally, a rupture probability for all initial flaws in a reactor can be calculated using the penetration probability for single flaw and the LBB failure probability for single TWC, as well as the predicted total number of initial flaw in the reactor.

  9. Nondestructive examination of PHWR pressure tube using eddy current technique

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Hee Jong; Choi, Sung Nam; Cho, Chan Hee; Yoo, Hyun Joo; Moon, Gyoon Young [KHNP Central Research Institute, Daejeon (Korea, Republic of)

    2014-06-15

    A pressurized heavy water reactor (PHWR) core has 380 fuel channels contained and supported by a horizontal cylindrical vessel known as the calandria, whereas a pressurized water reactor (PWR) has only a single reactor vessel. The pressure tube, which is a pressure-retaining component, has a 103.4 mm inside diameter x 4.19 mm wall thickness, and is 6.36 m long, made of a zirconium alloy (Zr-2.5 wt% Nb). This provides support for the fuel while transporting the D2O heat-transfer fluid. The simple tubular geometry invites highly automated inspection, and good approach for all inspection. Similar to all nuclear heat-transfer pressure boundaries, the PHWR pressure tube requires a rigorous, periodic inspection to assess the reactor integrity in accordance with the Korea Nuclear Safety Committee law. Volumetric-based nondestructive evaluation (NDE) techniques utilizing ultrasonic and eddy current testing have been adopted for use in the periodic inspection of the fuel channel. The eddy current testing, as a supplemental NDE method to ultrasonic testing, is used to confirm the flaws primarily detected through ultrasonic testing, however, eddy current testing offers a significant advantage in that its ability to detect surface flaws is superior to that of ultrasonic testing. In this paper, effectiveness of flaw detection and the depth sizing capability by eddy current testing for the inside surface of a pressure tube, will be introduced. As a result of this examination, the ET technique is found to be useful only as a detection technique for defects because it can detect fine defects on the surface with high resolution. However, the ET technique is not recommended for use as a depth sizing method because it has a large degree of error for depth sizing.

  10. Fission-product releases from a PHWR terminal debris bed

    Energy Technology Data Exchange (ETDEWEB)

    Brown, M.J.; Bailey, D.G., E-mail: morgan.brown@cnl.ca [Canadian Nuclear Laboratories, Chalk River, Ontario (Canada)

    2016-06-15

    During an unmitigated severe accident in a pressurized heavy water reactor (PHWR) with horizontal fuel channels, the core may disassemble and relocate to the bottom of the calandria vessel. The resulting heterogeneous in-vessel terminal debris bed (TDB) would likely be quenched by any remaining moderator, and some of the decay heat would be conducted through the calandria vessel shell to the surrounding reactor vault or shield tank water. As the moderator boiled off, the solid debris bed would transform into a more homogeneous molten corium pool located between top and bottom crusts. Until recently, the severe accident code MAAP-CANDU assumed that unreleased volatile and semi-volatile fission products remained in the TDB until after calandria vessel failure, due to low diffusivity through the top crust and the lack of gases or steam to flush released fission products from the debris. However, national and international experimental results indicate this assumption is unlikely; instead, high- and medium-volatility fission products would be released from a molten debris pool, and their volatility and transport should be taken into account in TDB modelling. The resulting change in the distribution of fission products within the reactor and containment, and the associated decay heat, can have significant effects upon the progression of the accident and fission-product releases to the environment. This article describes a postulated PHWR severe accident progression to generate a TDB and the effects of fission-product releases from the terminal debris, using the simple release model in the MAAP-CANDU severe accident code. It also provides insights from various experimental programs related to fission-product releases from core debris, and their applicability to the MAAP-CANDU TDB model. (author)

  11. Conceptual design of a large heavy water reactor for US siting

    Energy Technology Data Exchange (ETDEWEB)

    Shapiro, N. L.; Jesick, J. F.; Molin, A. T.; Daniel, J. A.

    1979-09-01

    Information on the PHWR type reactor is presented concerning design characteristics; fuel management and resource utilization; economic evaluations; safety, licensing, and environmental impact; and commercial introduction.

  12. Safety analysis procedures for PHWR

    Energy Technology Data Exchange (ETDEWEB)

    Min, Byung Joo; Kim, Hyoung Tae; Yoo, Kun Joong

    2004-03-01

    The methodology of safety analyses for CANDU reactors in Canada, a vendor country, uses a combination of best-estimate physical models and conservative input parameters so as to minimize the uncertainty of the plant behavior predictions. As using the conservative input parameters, the results of the safety analyses are assured the regulatory requirements such as the public dose, the integrity of fuel and fuel channel, the integrity of containment and reactor structures, etc. However, there is not the comprehensive and systematic procedures for safety analyses for CANDU reactors in Korea. In this regard, the development of the safety analyses procedures for CANDU reactors is being conducted not only to establish the safety analyses system, but also to enhance the quality assurance of the safety assessment. In the first phase of this study, the general procedures of the deterministic safety analyses are developed. The general safety procedures are covered the specification of the initial event, selection of the methodology and accident sequences, computer codes, safety analysis procedures, verification of errors and uncertainties, etc. Finally, These general procedures of the safety analyses are applied to the Large Break Loss Of Coolant Accident (LBLOCA) in Final Safety Analysis Report (FSAR) for Wolsong units 2, 3, 4.

  13. Benchmark of Atucha-2 PHWR RELAP5-3D control rod model by Monte Carlo MCNP5 core calculation

    Energy Technology Data Exchange (ETDEWEB)

    Pecchia, M.; D' Auria, F. [San Piero A Grado Nuclear Research Group GRNSPG, Univ. of Pisa, via Diotisalvi, 2, 56122 - Pisa (Italy); Mazzantini, O. [Nucleo-electrica Argentina Societad Anonima NA-SA, Buenos Aires (Argentina)

    2012-07-01

    Atucha-2 is a Siemens-designed PHWR reactor under construction in the Republic of Argentina. Its geometrical complexity and peculiarities require the adoption of advanced Monte Carlo codes for performing realistic neutronic simulations. Therefore core models of Atucha-2 PHWR were developed using MCNP5. In this work a methodology was set up to collect the flux in the hexagonal mesh by which the Atucha-2 core is represented. The scope of this activity is to evaluate the effect of obliquely inserted control rod on neutron flux in order to validate the RELAP5-3D{sup C}/NESTLE three dimensional neutron kinetic coupled thermal-hydraulic model, applied by GRNSPG/UNIPI for performing selected transients of Chapter 15 FSAR of Atucha-2. (authors)

  14. Equipment and procedures for inspection by the moderator system of PHWR Central; Equipos y procedimientos para la inspeccion del sistema moderador de una central PHWR

    Energy Technology Data Exchange (ETDEWEB)

    Palaez Gutierrez, J. A.; Regidor Ipana, J. J.; Gadea Prrinos, J. R.

    2012-07-01

    The moderator system of PHWR plant is the most important from the standpoint of operation and also in which the dosages are higher. For the realization of the pre-operational service and inspection have been developed ultrasonic inspection procedures both automatic and manual modes. Have also defined all equipment, probes and materials needed for the said inspection.

  15. Design of a Fractional Order Phase Shaper for Iso-damped Control of a PHWR under Step-back Condition

    CERN Document Server

    Saha, Suman; Ghosh, Ratna; Goswami, Bhaswati; Balasubramanian, R; Chandra, A K; Das, Shantanu; Gupta, Amitava; 10.1109/TNS.2010.2047405

    2012-01-01

    Phase shaping using fractional order (FO) phase shapers has been proposed by many contemporary researchers as a means of producing systems with iso-damped closed loop response due to a stepped variation in input. Such systems, with the closed loop damping remaining invariant to gain changes can be used to produce dead-beat step response with only rise time varying with gain. This technique is used to achieve an active step-back in a Pressurized Heavy Water Reactor (PHWR) where it is desired to change the reactor power to a pre-determined value within a short interval keeping the power undershoot as low as possible. This paper puts forward an approach as an alternative for the present day practice of a passive step-back mechanism where the control rods are allowed to drop during a step-back action by gravity, with release of electromagnetic clutches. The reactor under a step-back condition is identified as a system using practical test data and a suitable Proportional plus Integral plus Derivative (PID) contro...

  16. Reactors

    CERN Document Server

    International Electrotechnical Commission. Geneva

    1988-01-01

    This standard applies to the following types of reactors: shunt reactors, current-limiting reactors including neutral-earthing reactors, damping reactors, tuning (filter) reactors, earthing transformers (neutral couplers), arc-suppression reactors, smoothing reactors, with the exception of the following reactors: small reactors with a rating generally less than 2 kvar single-phase and 10 kvar three-phase, reactors for special purposes such as high-frequency line traps or reactors mounted on rolling stock.

  17. Post irradiation examination of tight fit garter springs from Indian PHWR

    Energy Technology Data Exchange (ETDEWEB)

    Dubey, J.S., E-mail: jsdubey@barc.gov.in; Shriwastaw, R.S.; Kumar, Ashwini; Shah, Priti Kotak; Rath, B.N.; Kumar, Sunil; Mishra, Prerna; Alur, V.D.; Mallik, G.K.; Anantharaman, S.

    2015-07-15

    Garter springs play an important role in maintaining the annulus gap between hot pressure tubes and cold calandria tubes of PHWRs. Post irradiation examination (PIE) was carried out on the garter springs removed from Indian PHWR after around 8 and 15 Hot Operating Years (HOY). PIE studies included visual examination, dimensional measurements, metallographic examination and relevant mechanical tests. The girdle wires of these garter springs were also examined and subjected to the tension and bend tests. This paper gives the results of the PIE investigations and discusses its relevance for continued performance of garter springs in PHWRs.

  18. The Sensitivity Analysis of Axial Pressure Tube Creep Profile for Dryout Power in PHWR

    Energy Technology Data Exchange (ETDEWEB)

    Ryu, Euiseung; Kim, Youngae [KHNP CRI, Daejeon (Korea, Republic of)

    2016-10-15

    The Stern Laboratory performed the CHF tests with only one axial pressure tube creep profile per 3.3%, 5.1% peak crept channel and made CHF correlation including creep factor from the CHF test results. Wolsong nuclear power plants also have utilized the same CHF correlation derived by CNL. Pressure tube diameter creep rate is function of fast neutron, coolant temperature, and coolant pressure in a channel. It means that various axial pressure tube creep profiles exist in PHWR due to the history of operating conditions. Usually, CHF correlation is used during ROP(Regional Overpower Protection) Trip Setpoint Analysis or Safety Analysis in PHWR. The sensitivity analysis for CHF effects using various creep profiles is needed. This paper summarizes the comparison results of dryout power between CHF test creep profile and estimated creep profiles of Wolsong units. The effect of axial pressure tube creep profile for dryout power in fuel channel is evaluated by using Stern Lab. CHF test creep profile and 380 channel creep profiles of Wolsong. The dryout powers at 3.3% and 5.1% test conditions are slightly smaller when using 380 Wolsong channels creep profiles. These also show that the simulated dryout powers maintain consistency regardless of flow conditions.

  19. Enthalpy and void distributions in subchannels of PHWR fuel bundles

    Energy Technology Data Exchange (ETDEWEB)

    Park, J. W.; Choi, H.; Rhee, B. W. [Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)

    1998-12-31

    Two different types of the CANDU fuel bundles have been modeled for the ASSERT-IV code subchannel analysis. From calculated values of mixture enthalpy and void fraction distribution in the fuel bundles, it is found that net buoyancy effect is pronounced in the central region of the DUPIC fuel bundle when compared with the standard CANDU fuel bundle. It is also found that the central region of the DUPIC fuel bundle can be cooled more efficiently than that of the standard fuel bundle. From the calculated mixture enthalpy distribution at the exit of the fuel channel, it is found that the mixture enthalpy and void fraction can be highest in the peripheral region of the DUPIC fuel bundle. On the other hand, the enthalpy and the void fraction were found to be highest in the central region of the standard CANDU fuel bundle at the exit of the fuel channel. This study shows that the subchannel analysis is very useful in assessing thermal behavior of the fuel bundle that could be used in CANDU reactors. 10 refs., 4 figs., 2 tabs. (Author)

  20. A review of qualitative inspection aspects of end fittings in an Indian pressurized heavy water reactor

    OpenAIRE

    Urva Pancholi; Dhaval Dave; Ajay Patel

    2016-01-01

    The paper provides a summarized description of the current state of knowledge and practices used in India, in the qualitative inspection of end fittings – a key component of the fuel channel assembly of a pressurized heavy water reactor (PHWR), generally of a Canadian Deuterium Uranium (CANDU) type. Further it discusses various quality inspection techniques; and the high standards and mechanical precision of the job required, to be accepted as viable nuclear reactor component. The techniqu...

  1. Licensing assessment of the Candu Pressurized Heavy Water Reactor. Preliminary safety information document. Volume II. [USA

    Energy Technology Data Exchange (ETDEWEB)

    1977-06-01

    ERDA has requested United Engineers and Constructors (UE and C) to evaluate the design of the Canadian natural uranium fueled, heavy water moderated (CANDU) nuclear reactor power plant to assess its conformance with the licensing criteria and guidelines of the U.S. Nuclear Regulatory Commission (USNRC) for light water reactors. This assessment was used to identify cost significant items of nonconformance and to provide a basis for developing a detailed cost estimate for a 1140 MWe, 3-loop Pressurized Heavy Water Reactor (PHWR) located at the Middletown, USA Site.

  2. Reactor

    Science.gov (United States)

    Evans, Robert M.

    1976-10-05

    1. A neutronic reactor having a moderator, coolant tubes traversing the moderator from an inlet end to an outlet end, bodies of material fissionable by neutrons of thermal energy disposed within the coolant tubes, and means for circulating water through said coolant tubes characterized by the improved construction wherein the coolant tubes are constructed of aluminum having an outer diameter of 1.729 inches and a wall thickness of 0.059 inch, and the means for circulating a liquid coolant through the tubes includes a source of water at a pressure of approximately 350 pounds per square inch connected to the inlet end of the tubes, and said construction including a pressure reducing orifice disposed at the inlet ends of the tubes reducing the pressure of the water by approximately 150 pounds per square inch.

  3. A review of qualitative inspection aspects of end fittings in an Indian pressurized heavy water reactor

    Directory of Open Access Journals (Sweden)

    Urva Pancholi

    2016-07-01

    Full Text Available The paper provides a summarized description of the current state of knowledge and practices used in India, in the qualitative inspection of end fittings – a key component of the fuel channel assembly of a pressurized heavy water reactor (PHWR, generally of a Canadian Deuterium Uranium (CANDU type. Further it discusses various quality inspection techniques; and the high standards and mechanical precision of the job required, to be accepted as viable nuclear reactor component. The techniques, instruments and specific data for such components mentioned here are synthesized results from primary research and knowledge available in this area, in order to produce coherent argument focused on quality control of end fittings.

  4. Application of Genetic Algorithm methodologies in fuel bundle burnup optimization of Pressurized Heavy Water Reactor

    Energy Technology Data Exchange (ETDEWEB)

    Jayalal, M.L., E-mail: jayalal@igcar.gov.in [Electronics, Instrumentation and Radiological Safety Group (EIRSG), Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam, Tamil Nadu (India); Ramachandran, Suja [Electronics, Instrumentation and Radiological Safety Group (EIRSG), Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam, Tamil Nadu (India); Rathakrishnan, S. [Reactor Physics Section, Madras Atomic Power Station (MAPS), Kalpakkam, Tamil Nadu (India); Satya Murty, S.A.V. [Electronics, Instrumentation and Radiological Safety Group (EIRSG), Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam, Tamil Nadu (India); Sai Baba, M. [Resources Management Group (RMG), Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam, Tamil Nadu (India)

    2015-01-15

    Highlights: • We study and compare Genetic Algorithms (GA) in the fuel bundle burnup optimization of an Indian Pressurized Heavy Water Reactor (PHWR) of 220 MWe. • Two Genetic Algorithm methodologies namely, Penalty Functions based GA and Multi Objective GA are considered. • For the selected problem, Multi Objective GA performs better than Penalty Functions based GA. • In the present study, Multi Objective GA outperforms Penalty Functions based GA in convergence speed and better diversity in solutions. - Abstract: The work carried out as a part of application and comparison of GA techniques in nuclear reactor environment is presented in the study. The nuclear fuel management optimization problem selected for the study aims at arriving appropriate reference discharge burnup values for the two burnup zones of 220 MWe Pressurized Heavy Water Reactor (PHWR) core. Two Genetic Algorithm methodologies namely, Penalty Functions based GA and Multi Objective GA are applied in this study. The study reveals, for the selected problem of PHWR fuel bundle burnup optimization, Multi Objective GA is more suitable than Penalty Functions based GA in the two aspects considered: by way of producing diverse feasible solutions and the convergence speed being better, i.e. it is capable of generating more number of feasible solutions, from earlier generations. It is observed that for the selected problem, the Multi Objective GA is 25.0% faster than Penalty Functions based GA with respect to CPU time, for generating 80% of the population with feasible solutions. When average computational time of fixed generations are considered, Penalty Functions based GA is 44.5% faster than Multi Objective GA. In the overall performance, the convergence speed of Multi Objective GA surpasses the computational time advantage of Penalty Functions based GA. The ability of Multi Objective GA in producing more diverse feasible solutions is a desired feature of the problem selected, that helps the

  5. Multiple recycling of fuel in prototype fast breeder reactor in a closed fuel cycle with pressurized heavy-water reactor external feed

    Indian Academy of Sciences (India)

    G Pandikumar; A John Arul; P Puthiyavinayagam; P Chellapandi

    2015-10-01

    A fast breeder reactor (FBR) closed fuel cycle involves recycling of the discharged fuel, after reprocessing and refabrication, in order to utilize the unburnt fuel and the bred fissile material. Our previous study in this regard for the prototype fast breeder reactor (PFBR) indicated the possibility of multiple recycling with self-sufficiency. It was found that the change in Pu composition becomes negligible (less than 1%) after a few cycles. The core-1 Pu increases by 3% from the beginning of cycle-0 to that of recycle-1, the Pu increase from the beginning of the 9th cycle to that of the 10th by only 0.3%. In this work, the possibility of multiple recycling of PFBR fuel with external plutonium feed from pressurized heavy-water reactor (PHWR) is examined. Modified in-core cooling and reprocessing periods are considered. The impact of multiple recycling on PFBR core physics parameters due to the changes in the fuel composition has been brought out. Instead of separate recovery considered for the core and axial blankets in the earlier studies, combined fuel recovery is considered in this study. With these modifications and also with PHWR Pu as external feed, the study on PFBR fuel recycling is repeated. It is observed that the core-1 initial Pu inventory increases by 3.5% from cycle-0 to that of recycle-1, the Pu increase from the beginning of the 9th cycle to that of the 10th is only 0.35%. A comparison of the studies done with different external plutonium options viz., PHWR and PFBR radial blanket has also been made.

  6. Bathymetry of Lake Ontario

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Bathymetry of Lake Ontario has been compiled as a component of a NOAA project to rescue Great Lakes lake floor geological and geophysical data and make it more...

  7. Derivatization Ion Chromatography for the Determination of Monoethanolamine in Presence of Hydrazine in PHWR Steam-Water Circuits

    Directory of Open Access Journals (Sweden)

    Ayushi D.

    2011-01-01

    Full Text Available A simple, rapid and accurate method for the determination of monoethanolamine (MEA in PHWR steam-water circuits has been developed. MEA is added in the feed water to provide protection against corrosion while hydrazine is added to scavenge dissolved oxygen. The quantitative determination of MEA in presence of hydrazine was accomplished using derivatization ion chromatography with conductometric detection in nonsuppressed mode. A Metrosep cation 1-2 analytical column and a Metrosep cartridge were used for cation separation. A mixture of 4 mM tartaric acid, 20% acetone and 0.05 mM HNO3 was used as eluent. Acetone in the mobile phase leads to the formation of different derivatives with MEA and hydrazine. The interferences due Na+ and NH4 + were eliminated by adopting a simple pretreatment procedure employing OnGuard-H cartridge. The limit of detection limit of MEA was 0.1 μg mL−1 and the relative standard deviation was 2% for the overall method. The recovery of MEA added was in the range 95%–102%. The method was applied to the determination of MEA in steam generator water samples.

  8. Development of modern CANDU PHWR cross-section libraries for SCALE

    Energy Technology Data Exchange (ETDEWEB)

    Shoman, Nathan T., E-mail: nshoman@vols.utk.edu; Skutnik, Steven E., E-mail: sskutnik@utk.edu

    2016-06-15

    Highlights: • New ORIGEN libraries for CANDU 28 and 37-element fuel assemblies have been created. • These new reactor data libraries are based on modern ENDF/B-VII.0 cross-section data. • The updated CANDU data libraries show good agreement with radiochemical assay data. • Eu-154 overestimated when using ENDF-VII.0 due to a lower thermal capture cross-section. - Abstract: A new set of SCALE fuel lattice models have been developed for the 28-element and 37-element CANDU fuel assembly designs using modern cross-section data from ENDF-B/VII.0 in order to produce new reactor data libraries for SCALE/ORIGEN depletion analyses. These new libraries are intended to provide users with a convenient means of evaluating depletion of CANDU fuel assemblies using ORIGEN through pre-generated cross sections based on SCALE lattice physics calculations. The performance of the new CANDU ORIGEN libraries in depletion analysis benchmarks to radiochemical assay data were compared to the previous version of the CANDU libraries provided with SCALE (based on WIMS-AECL models). Benchmark comparisons with available radiochemical assay data indicate that the new cross-section libraries perform well at matching major actinide species (U/Pu), which are generally within 1–4% of experimental values. The library also showed similar or better results over the WIMS-AECL library regarding fission product species and minor actinoids (Np, Am, and Cm). However, a notable exception was in calculated inventories of {sup 154}Eu and {sup 155}Eu, where the new library employing modern nuclear data (ENDF/B-VII.0) performed substantially poorer than the previous WIMS-AECL library (which used ENDF-B/VI.8 cross-sections for these species). The cause for this discrepancy appears to be due to differences in the {sup 154}Eu thermal capture cross-section between ENDF/B-VI.8 and ENDF/B-VII.0, an effect which is exacerbated by the highly thermalized flux of a CANDU heavy water reactor compared to that of a

  9. DETERMINISTIC EVALUATION OF DELAYED HYDRIDE CRACKING BEHAVIORS IN PHWR PRESSURE TUBES

    Directory of Open Access Journals (Sweden)

    YOUNG-JIN OH

    2013-04-01

    Full Text Available Pressure tubes made of Zr-2.5 wt% Nb alloy are important components consisting reactor coolant pressure boundary of a pressurized heavy water reactor, in which unanticipated through-wall cracks and rupture may occur due to a delayed hydride cracking (DHC. The Canadian Standards Association has provided deterministic and probabilistic structural integrity evaluation procedures to protect pressure tubes against DHC. However, intuitive understanding and subsequent assessment of flaw behaviors are still insufficient due to complex degradation mechanisms and diverse influential parameters of DHC compared with those of stress corrosion cracking and fatigue crack growth phenomena. In the present study, a deterministic flaw assessment program was developed and applied for systematic integrity assessment of the pressure tubes. Based on the examination results dealing with effects of flaw shapes, pressure tube dimensional changes, hydrogen concentrations of pressure tubes and plant operation scenarios, a simple and rough method for effective cooldown operation was proposed to minimize DHC risks. The developed deterministic assessment program for pressure tubes can be used to derive further technical bases for probabilistic damage frequency assessment.

  10. Development of the advanced PHWR technology -Design and analysis of CANDU advanced fuel-

    Energy Technology Data Exchange (ETDEWEB)

    Suk, Hoh Chun; Shim, Kee Sub; Byun, Taek Sang; Park, Kwang Suk; Kang, Heui Yung; Kim, Bong Kee; Jung, Chang Joon; Lee, Yung Wook; Bae, Chang Joon; Kwon, Oh Sun; Oh, Duk Joo; Im, Hong Sik; Ohn, Myung Ryong; Lee, Kang Moon; Park, Joo Hwan; Lee, Eui Joon [Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)

    1995-07-01

    This is the `94 annual report of the CANDU advanced fuel design and analysis project, and describes CANFLEX fuel design and mechanical integrity analysis, reactor physics analysis and safety analysis of the CANDU-6 with the CANFLEX-NU. The following is the R and D scope of this fiscal year : (1) Detail design of CANFLEX-NU and detail analysis on the fuel integrity, reactor physics and safety. (a) Detail design and mechanical integrity analysis of the bundle (b) CANDU-6 refueling simulation, and analysis on the Xe transients and adjuster system capability (c) Licensing strategy establishment and safety analysis for the CANFLEX-NU demonstration demonstration irradiation in a commercial CANDU-6. (2) Production and revision of CANFLEX-NU fuel design documents (a) Production and approval of CANFLEX-NU reference drawing, and revisions of fuel design manual and technical specifications (b) Production of draft physics design manual. (3) Basic research on CANFLEX-SEU fuel. 55 figs, 21 tabs, 45 refs. (Author).

  11. Ontario's Student Voice Initiative

    Science.gov (United States)

    Courtney, Jean

    2014-01-01

    This article describes in some detail aspects of the Student Voice initiative funded and championed by Ontario's Ministry of Education since 2008. The project enables thousands of students to make their voices heard in meaningful ways and to participate in student-led research. Some students from grades 7 to 12 become members of the Student…

  12. Lake Ontario: Nearshore Variability

    Science.gov (United States)

    We conducted a high-resolution survey with towed electronic instrumentation along the Lake Ontario nearshore (720 km) at a 20 meter contour. The survey was conducted September 6-10, 2008 with a shorter 300 km survey conducted August 14-15 for comparing of temporal variability. ...

  13. Experimental simulation of asymmetric heat up of coolant channel under small break LOCA condition for PHWR

    Energy Technology Data Exchange (ETDEWEB)

    Yadav, Ashwini K., E-mail: ashwinikumaryadav@gmail.com [Department of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee 247667 (India); Majumdar, P., E-mail: pmajum@barc.gov.in [Reactor Safety Division, Bhabha Atomic Research Centre, Mumbai 400085 (India); Kumar, Ravi, E-mail: ravikfme@iitr.ernet.in [Department of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee 247667 (India); Chatterjee, B., E-mail: barun@barc.gov.in [Reactor Safety Division, Bhabha Atomic Research Centre, Mumbai 400085 (India); Gupta, Akhilesh, E-mail: akhilfme@iitr.ernet.in [Department of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee 247667 (India); Mukhopadhyay, D., E-mail: dmukho@barc.gov.in [Reactor Safety Division, Bhabha Atomic Research Centre, Mumbai 400085 (India)

    2013-02-15

    Highlights: ► Circumferential temperature gradient of PT for asymmetric heat-up was 440 °C. ► At 2 MPa ballooning initiated at 450 °C and with strain rate of 0.0277%/s. ► At 4 MPa ballooning initiated at 390 °C and with strain rate of 0.0305%/s. ► At 4 MPa, PT ruptured under uneven strain and steep temperature gradient. ► Integrity of PT depends on internal pressure and magnitude of decay power. -- Abstract: During postulated small break loss of coolant accident (SBLOCA) for Pressurised Heavy Water Reactors (PHWRs) as well as for postulated SBLOCA coincident with loss of ECCS, a stratified flow condition can arise in the coolant channels as the gravitational force dominates over the low inertial flow arising from small break flow. A Station Blackout condition without operator intervention can also lead to stratified flow condition during a slow channel boil-off condition. For all these conditions the pressure remains high and under stratified flow condition, the horizontal fuel bundles experience different heat transfer environments with respect to the stratified flow level. This causes the bundle upper portion to get heated up higher as compared to the submerged portion. This kind of asymmetrical heating of the bundle is having a direct bearing on the circumferential temperature gradient of pressure tube (PT) component of the coolant channel. The integrity of the PT is important under normal conditions as well as at different accident loading conditions as this component houses the fuel bundles and serves as a coolant pressure boundary of the reactors. An assessment of PT is required with respect to different accident loading conditions. The present investigation aims to study thermo-mechanical behaviour of PT (Zr, 2.5 wt% Nb) under a stratified flow condition under different internal pressures. The component is subjected to an asymmetrical heat-up conditions as expected during the said situation under different pressure conditions which varies from 2

  14. A lead-before-break strategy for primary heat transport piping of 500 MWe Indian PHWR

    Energy Technology Data Exchange (ETDEWEB)

    Chattopadhyay, J.; Dutta, B.K.; Kushwaha, H.S. [Bhabha Atomic Research Centre, Bombay (India)] [and others

    1997-04-01

    Leak-Before-Break (LBB) is being used to design the primary heat transport piping system of 500 MWe Indian Pressurized Heavy Water Reactors (IPHWR). The work is categorized in three directions to demonstrate three levels of safety against sudden catastrophic break. Level 1 is inherent in the design procedure of piping system as per ASME Sec.III with a well defined factor of safety. Level 2 consists of fatigue crack growth study of a postulated part-through flaw at the inside surface of pipes. Level 3 is stability analysis of a postulated leakage size flaw under the maximum credible loading condition. Developmental work related to demonstration of level 2 and level 3 confidence is described in this paper. In a case study on fatigue crack growth on PHT straight pipes for level 2, negligible crack growth is predicted for the life of the reactor. For level 3 analysis, the R6 method has been adopted. A database to evaluate SIF of elbows with throughwall flaws under combined internal pressure and bending moment has been generated to provide one of the inputs for R6 method. The methodology of safety assessment of elbow using R6 method has been demonstrated for a typical pump discharge elbow. In this analysis, limit load of the cracked elbow has been determined by carrying out elasto-plastic finite element analysis. The limit load results compared well with those given by Miller. However, it requires further study to give a general form of limit load solution. On the experimental front, a set of small diameter pipe fracture experiments have been carried out at room temperature and 300{degrees}C. Two important observations of the experiments are - appreciable drop in maximum load at 300{degrees}C in case of SS pipes and out-of-plane crack growth in case of CS pipes. Experimental load deflection curves are finally compared with five J-estimation schemes predictions. A material database of PHT piping materials is also being generated for use in LBB analysis.

  15. Development of the advanced PHWR technology -Design, fabrication and installation of irradiation facilities-

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Yong Sung; Lee, Jung Yung; Lee, Sung Hoh [Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)

    1995-07-01

    The principal contents of this project are to design, fabricate and install the steady-state fuel test loop and non-instrumented capsule and to develop the instrumented capsule in HANARO for nuclear technology development. This project will be completed in 1997, the detail design, safety analysis, and procurement of main equipment for fuel test loop have been performed and also the piping in gallery and the support for IPS piping in reactor pool have been installed in 1994 as the second year of the first phase in implementing this project. In the area of non-instrumented capsule for material irradiation test, the fabrication of capsule has been completed, so the manufacturing process has been accomplished by the preparation of QA procedure manual, machining and assembling, test and inspection. In the area of instrumented capsule technology development, mock-ups of capsule and supporting system have been designed and fabricated for the development of the in-pile test technology. It has been confirmed that the capsule and supporting system are compatible with the HANARO operating conditions and structural requirements. Capsule supporting system has been installed in the HANARO. As besides, as these irradiation facilities will be installed in HANARO, review of safety concern, discussion with KINS for licensing and review of HANARO interface have been performed respectively. 36 figs, 18 tabs, 21 refs. (Author).

  16. Horizontal drilling in Ontario

    Energy Technology Data Exchange (ETDEWEB)

    Sidey, P.; Precul, L. [Sproule Associates Ltd., Calgary, AB (Canada)

    2002-07-01

    A review of oil and gas production in Ontario was presented with particular reference to drilling activity between 1987 to mid 2002 when 1450 vertical wells were drilled, of which 1100 were for petroleum production and the remainder were for gas storage, observation wells, private gas wells and stratigraphic tests. Of the 1100 vertical wells drilled for petroleum production, 40 per cent became gas wells, 16 per cent became oil wells, 4 per cent became oil and gas wells, and 40 per cent were dry. During the same time period, 133 horizontal wells were also drilled, mostly for petroleum. The most active operator was Talisman Energy, which drilled 101 of the 133 horizontal wells. The remainder were drilled by 12 other companies. Of the horizontal wells, 64 per cent became oil wells, 19 per cent became gas wells, and 17 per cent were dry. This presentation included graphs depicting which oil and gas pools saw vertical or horizontal drilling during the designated time period, and explained how the wells were classified. Both horizontal and vertical well targets were illustrated. Particular reference was made to Talisman Energy's Lake Erie Drilling program which revealed that horizontal wells have an initial production rate that is 5 times that expected from vertical wells. The Hillman Pool case study revealed that the initial rate of the average horizontal well is less than half that of the average vertical well. Horizontal drilling in the Lake Erie Morpeth Gas pool has also been a commercial success. This paper demonstrates that operators have maintained Ontario's oil and gas production at high levels. In 1997 widespread horizontal drilling began taking place in Ontario, and since then, approximately 30 per cent of the wells drilled in the province have been horizontal. 16 figs.

  17. Thermal-hydraulic interfacing code modules for CANDU reactors

    Energy Technology Data Exchange (ETDEWEB)

    Liu, W.S.; Gold, M.; Sills, H. [Ontario Hydro Nuclear, Toronto (Canada)] [and others

    1997-07-01

    The approach for CANDU reactor safety analysis in Ontario Hydro Nuclear (OHN) and Atomic Energy of Canada Limited (AECL) is presented. Reflecting the unique characteristics of CANDU reactors, the procedure of coupling the thermal-hydraulics, reactor physics and fuel channel/element codes in the safety analysis is described. The experience generated in the Canadian nuclear industry may be useful to other types of reactors in the areas of reactor safety analysis.

  18. Gamma radiation damage in sintered glasses containing simulated high-level wastes of PHWR. Dose calculations as a function of time; Dano por radiacion gamma en vidrios sinterizados con residuos de alta actividad tipo PHWR simulados. Calculo de la dosis en funcion del tiempo

    Energy Technology Data Exchange (ETDEWEB)

    Bernasconi, Norma B. Messi de; Bevilacqua, Arturo M.; Heredia, Arturo D.; Sanfilippo, Miguel; Prastalo, Simon; Russo, Diego O. [Comision Nacional de Energia Atomica, San Carlos de Bariloche (Argentina). Centro Atomico Bariloche

    1996-07-01

    The objective of the work was to evaluate the long-term capacity of sintered glass to retain the high-level nuclear wastes (HLW) in repository conditions. The SG7 glass containing simulated non-radioactive waste PHWR was irradiated in a Co{sup 60} {gamma}-field (Division Fuentes Intensas - Centro Atomico Ezeiza) at dose rate of 43.4K Gy/h. We were considered the following potential effects of irradiation: changes in the microhardness and in the density; changes in leaching and dissolution rates at 363 k during 3 days and 28 days, in deionized; changes in the microstructure of the sintered glass forms. Globally we did not find any adverse influence on the bulk corrosion resistance or in the microstructure. We were calculated, by means of the computer code ORIGEN2.1, the fission products activities caused by the high-level wastes from reprocessed spent fuel type PHWR, with a burnup of 7000 MWd/t U and a cooling time of 20 years. We presented the predicted numbers of cumulative gamma events, the activity and the dose due to gamma radiation, per metric to of heavy metal and per cubic centimeter of the sintered HLW glass forms, as a function of the time up to one million years. (author)

  19. International Student Support Services at Ontario Universities

    Science.gov (United States)

    Smith, Clayton; Whiteside, Brenda; Blanchard, Suzanne; Martin, Chris

    2013-01-01

    In this article, the Ontario Committee on Student Affairs and the Ontario Undergraduate Student Alliance partnered to examine the availability and use of international student support services at Ontario universities. Results of the recently administered Ontario Committee on Student Affairs, Canadian Bureau of International Education, and…

  20. Remote field eddy current technique for gap measurement of horizontal flux detector guide tube in pressurized heavy water reactor

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Dong Hoon; Jung, Hyun Kyu; Yang, Dong Ju; Cheong, Yong Moo [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

    2004-11-15

    The fuel channels including the pressure tube(PT) and the calandria tube(CT) are important components of the pressurized heavy water reactor(PHWR). A sagging of fuel channel increases by heat and radiation exposure with the increasing operation time. The contact of fuel channel to the Horizontal flux Detector(HFD) guide tube is needed for the power plant safety. In order to solve this safety issue, the electromagnetic technique was applied to measure the status of the guide tube. The Horizontal flux Detector(HFD) guide tube and the Calandria tube(CT) in the Pressurized Heavy Water Reactor(PHWR) are cross-aligned horizontally. The remote field eddy current(RFEC) technology is applied for gap measurement between the HFD guide tube and the CT HFD guide tube can be detected by inserting the RFEC probe into pressure tube(PT) at the crossing point directly. The RFEC signals using the volume integral method(VIM) were simulated for obtaining the optimal inspection parameters. This paper shows that the simulated eddy current signals and the experimental results in variance with the CT/HFD gap.

  1. Parametric study on effect of break size during LOCA on thermal hydraulic conditions in an indian pressurized heavy water reactor (220 MWe)

    Energy Technology Data Exchange (ETDEWEB)

    Rao, G.S.; Gupta, S.K.; Raj, V.V. [Bhabha Atomic Research Centre, Mumbai (India)

    1999-07-01

    Loss Of Coolant Accident (LOCA) in a Pressurized Heavy Water Reactor (PHWR) leads to coolant expulsion in a primary heat transport system resulting in depressurization and possible core voiding. This results in deterioration of cooling conditions in reactor channels and increase in power before reactor shutdown, leading to higher fuel temperatures. Coolant expulsion rates during LOCA are dictated by critical flow conditions governed by initial plant conditions prior to the accident, break geometry, location of break, etc. In addition the PHWRs have positive void-coefficient of reactivity for coolant resulting in reactor power rise in earlier part of LOCA, when the stored heat of the fuel has yet not been removed. If, in addition, heat transfer to the coolant drops sharply very high fuel surface temperatures are expected. The paper describes analyses carried out for three different break sizes. (author)

  2. Ductile fracture behaviour of primary heat transport piping material of nuclear reactors

    Indian Academy of Sciences (India)

    S Tarafder; V R Ranganath; S Sivaprasad; P Johri

    2003-02-01

    Design of primary heat transport (PHT) piping of pressurised heavy water reactors (PHWR) has to ensure implementation of leak-before-break concepts. In order to be able to do so, the ductile fracture characteristics of PHT piping material have to be quantified. In this paper, the fracture resistance of SA333, Grade 6 steel — the material used for Indian PHWR — under monotonic and cyclic tearing loading has been documented. An attempt has also been made to understand the mechanism responsible for the high fracture toughness of the steel through determination of the effect of constraint on the fracture behaviour and fractographic observations. From J–R tests over a range of temperatures, it was observed that SA333 steel exhibits embrittlement tendencies in the service temperature regime. The fracture resistance of the steel is inferior in the longitudinal direction with respect to the pipe geometry as compared to that in the circumferential direction. Imposition of cyclic unloading during ductile fracture tests for simulation of response to seismic activities results in a dramatic decrease of fracture resistance. It appears, from the observations of effects of constraint on fracture toughness and fractographic examinations, that fracture resistance of the steel is derived partly from the inability of voids to initiate and grow due to a loss of constraint in the crack-tip stress field.

  3. Synthesis of Model Based Robust Stabilizing Reactor Power Controller for Nuclear Power Plant

    Directory of Open Access Journals (Sweden)

    Arshad Habib Malik

    2011-04-01

    Full Text Available In this paper, a nominal SISO (Single Input Single Output model of PHWR (Pressurized Heavy Water Reactor type nuclear power plant is developed based on normal moderator pump-up rate capturing the moderator level dynamics using system identification technique. As the plant model is not exact, therefore additive and multiplicative uncertainty modeling is required. A robust perturbed plant model is derived based on worst case model capturing slowest moderator pump-up rate dynamics and moderator control valve opening delay. Both nominal and worst case models of PHWR-type nuclear power plant have ARX (An Autoregressive Exogenous structures and the parameters of both models are estimated using recursive LMS (Least Mean Square optimization algorithm. Nominal and worst case discrete plant models are transformed into frequency domain for robust controller design purpose. The closed loop system is configured into two port model form and H? robust controller is synthesized. The H?controller is designed based on singular value loop shaping and desired magnitude of control input. The selection of desired disturbance attenuation factor and size of the largest anticipated multiplicative plant perturbation for loop shaping of H? robust controller form a constrained multi-objective optimization problem. The performance and robustness of the proposed controller is tested under transient condition of a nuclear power plant in Pakistan and found satisfactory.

  4. Ontario Teachers' Deprofessionalization and Proletarianization.

    Science.gov (United States)

    Filson, Glen

    1988-01-01

    Discusses teachers' class location in capitalist societies in terms of major sociological perspectives. Identifies corporate capitalist class categories that distinguish professionals from proletarians, and applies these categories to Ontario teachers at different occupational levels. (44 references) (SV)

  5. Nuclear Reactors

    Energy Technology Data Exchange (ETDEWEB)

    Hogerton, John

    1964-01-01

    This pamphlet describes how reactors work; discusses reactor design; describes research, teaching, and materials testing reactors; production reactors; reactors for electric power generation; reactors for supply heat; reactors for propulsion; reactors for space; reactor safety; and reactors of tomorrow. The appendix discusses characteristics of U.S. civilian power reactor concepts and lists some of the U.S. reactor power projects, with location, type, capacity, owner, and startup date.

  6. Transboundary air pollution in Ontario

    Energy Technology Data Exchange (ETDEWEB)

    Yap, D.; Reid, N.; De Brou, G.; Bloxam, R. [Ontario Ministry of the Environment and Energy, Toronto, ON (Canada)

    2005-06-01

    This report examines the role of transboundary air pollution from an Ontario perspective, specifically the impacts of smog associated with both ground level ozone and fine particulate matter coming from the United States. Measurements and computer modeling have provided compelling evidence regarding the impact of transboundary pollution in Ontario. This paper presents an assessment of the human health and economic costs associated with transboundary air pollution. It also examines the impact of Ontario's emissions on other jurisdictions and reviews emission control programs, and initiatives and agreements that are being undertaken or considered to address these transboundary problems. Particular attention is given to the impacts of mercury and acid deposition. The report concludes that unique features exist in the regional climate that lead to elevated episodic conditions of poor air quality over southern Ontario. Transboundary transport of pollution is a very significant source of regionally elevated air quality levels in Ontario. Furthermore, there is an urgency to address the unacceptable health impacts and environmental consequences. 29 refs., 13 tabs., 33 figs., 1 app.

  7. Reforming Ontario Early Learning: A Review

    Science.gov (United States)

    Ryan, Thomas; Date, Gavin

    2014-01-01

    Herein, we address the reformation of Ontario early learning. Over the next 3 years, all 4- and 5-year-olds in Ontario (Canada) will be able to attend full-day early learning with child care, before and after school provided by the Government of Ontario Ministry of Education. The benefits of such a change are both academic and societal and are…

  8. Transmission system planning in Ontario

    Energy Technology Data Exchange (ETDEWEB)

    Barrie, D.; Macedo, F.X.; Mcconnach, J.S. [Ontario Hydro, Toronto, ON (Canada)

    1994-12-31

    In recent years, new and modified approaches to planning the large transmission system that serves the province of Ontario, Canada, have been necessary to accommodate the rapidly changing planning environment including slower uncertain growth, ageing of facilities, integration of demand side management and non utility generation options, increased competitiveness, increased financial stresses and affordable constraints. This paper describes some of the new and modified approaches and tools that have been adopted or are being developed by Ontario Hydro to cope with this changing environment. (author) 9 refs., 4 figs.

  9. Planktonic diatoms of Lake Ontario

    Science.gov (United States)

    Reinwand, Jerry F.

    1969-01-01

    The major species of diatoms in surface collections from Lake Ontario in September 1964 were Asterionella formosa, Fragilaria crotonensis, and Tabellaris fenestrata. Dominant species in the deep-water samples were Stephanodiscus astraea, S. astraea var. mintula, and F. crotonensis. The diatom flora in surface collections varied among several stations in the eastern end of the lake.

  10. PV gold rush in Ontario

    Energy Technology Data Exchange (ETDEWEB)

    Becker, Daniela

    2011-07-01

    As a result of the Green Energy Act, the installed PV capacity in the Canadian province of Ontario has tripled in the year 2010. A generous feed-in tariff, aiming at maximum local added value, has attracted numerous international manufacturers. However, the rigorous rules committing the companies to 60 % inland production have provoked harsh criticism. (orig.)

  11. Nuclear Material Attractiveness: An Assessment of Material from PHWR's in a Closed Thorium Fuel Cycle

    Energy Technology Data Exchange (ETDEWEB)

    Sleaford, Brad W.; Ebbinghaus, B. B.; Bradley, Keith S.; Robel, Martin; Prichard, Andrew W.; Smith, Brian W.; Collins, Brian A.; Hase, Kevin R.; Jarvinen, G. D.; Ireland, J. R.; Johnson, M. W.; Bathke, Charles G.; Wallace, R. K.

    2010-06-11

    This paper examines the attractiveness of material mixtures containing special nuclear materials (SNM) associated with reprocessing and the thorium-based LWR fuel cycle. This paper expands upon the results from earlier studies [ , ] that examined the attractiveness of SNM associated with the reprocessing of spent light water reactor (LWR) fuel by various reprocessing schemes and the recycle of plutonium as a mixed oxide (MOX) fuel in LWR. This study shows that 233U that is produced in thorium-based fuel cycles is very attractive for weapons use. Consistent with other studies, these results also show that all fuel cycles examined to date need to be rigorously safeguarded and provided moderate to high levels of physical protection. These studies were performed at the request of the United States Department of Energy (DOE), and are based on the calculation of "attractiveness levels" that has been couched in terms chosen for consistency with those normally used for nuclear materials in DOE nuclear facilities [ ]. The methodology and key findings will be presented.

  12. Operational experience of electronic active personal dosemeter and comparison with CaSo4:Dy TL dosemeter in Indian PHWR.

    Science.gov (United States)

    Singh, Vishwanath P; Managanvi, S S; Bihari, R R; Bhat, H R

    2013-01-01

    Direct reading dosemeter has been used for day-to-day radiation exposure control and management for last four decades in Indian nuclear power plants (NPPs). Recently new real time, alarm and pre-alarm on equivalent dose/dose rate, storage of dose/dose rate and maximum dose rate, user-friendly electronic active personal dosemeter (APD) has been implemented into practice for the first time at Kaiga Atomic Power Station-3&4,  of Indian NPPs. The dosemeter showed tolerance level (L) 0.1085±0.0450 compared with 0.1869±0.0729 (average±SD) for CaSO4:Dy, TL dosemeter, having narrow range trumpet curve, nil electromagnetic interference. Records of >29 000 for APD and TL dosemeter were analysed for comparasion of the measurement of the individual dose. APD followed general acceptance rule of ±25 % for dose >1 mSv. Monthly Station collective dose by TL dosemeters and APD for normal reactor operation as well as outage are found in good agreement. Operational experiences and statistical analysis support that an APD dosemeter is reasonably equivalent to CaSO4:Dy TL dosemeter. The accuracy, reproducibility and repeatability of the measurement of radiation for (137)Cs are comparable with CaSO4:Dy, TL dosemeter. Operational experience of APD during the normal operation as well as outage showed as one of the best ALARA tool for occupational dose monitoring, control, management and future outage planning.

  13. Development of advanced techniques for life management and inspection of advanced heavy water reactor (AWHR) coolant channel components

    Energy Technology Data Exchange (ETDEWEB)

    Madhusoodanan, K.; Sinha, S.K.; Kumar, K.; Shyam, T.V.; Panwar, S.; Sharma, B.S.V.G. [Bhabha Atomic Research Centre, Reactor Engineering Div., Trombay, Mumbai (India); Sinha, R. K. [Bhabha Atomic Research Centre, Reactor Design and Development Group., Trombay, Mumbai (India)

    2011-07-01

    Operating life of pressure tubes of Pressurized Heavy Water Reactor (PHWR) is limited due to the presence of various issues associated with the material like hydrogen pick up, delayed hydride cracking, axial elongation and increase in diameter due to irradiation creep and growth. Periodic monitoring of the health of the pressure tube under in-situ conditions is essential to ensure the safe operation of the reactor. New designs of reactor call for innovative design philosophy, modification in fabrication route of pressure tube, development of reactor specific tools, both analytical and hardware for assessing the fitness for service of the pressure tube. Feedback from existing reactors has enhanced the understanding about life limiting parameters. This paper gives an insight into the life limiting issues associated with pressure tube and the efforts pursued for development of life management techniques for coolant channel of Advanced Heavy Water Reactor (AHWR) designed in India. The tools and techniques for in-situ property/hydrogen measurement, pulsed eddy current technique for zirconium alloy in-homogeneity characterization, horizontal shear wave EMAT system for dissimilar metal weld inspection, sliver sampling of vertical channel etc. are elaborated in the paper. (author)

  14. H Reactor

    Data.gov (United States)

    Federal Laboratory Consortium — The H Reactor was the first reactor to be built at Hanford after World War II.It became operational in October of 1949, and represented the fourth nuclear reactor on...

  15. Examining Competition in Ontario's Higher Education Market

    Science.gov (United States)

    Farhan, Bayan Yousef

    2017-01-01

    Financial challenges have forced many publicly funded academic institutions in Ontario to adopt a corporate model and to use market tools to compete in the higher education market and maintain their enrolment and revenue levels. This study has analyzed how competition affects publicly funded universities in Ontario. Competition was examined by…

  16. Libraries in Ontario: MedlinePlus

    Science.gov (United States)

    ... this page: https://medlineplus.gov/libraries/ontario.html Libraries in Ontario To use the sharing features on ... JavaScript. Barrie Royal Victoria Regional Health Centre Health Library 201 Georgian Drive Barrie, ON L4M 6M2 CANADA ...

  17. Educational Information in Ontario: A Government Perspective.

    Science.gov (United States)

    Hildebrand, B. M.

    The Ontario Ministry of Education's role in funding educational research, and its procedures for the dissemination of educational research information are described. Two ministry initiatives are discussed in detail: the establishment of the Educational Information System for Ontario (EISO), a computerized search and retrieval service to access…

  18. Protectionist Measures in Postsecondary Ontario (Canada) TESL

    Science.gov (United States)

    Jambor, Paul Z.

    2012-01-01

    TESL in Ontario, Canada, seems to be on an inauspicious path by having set up non-tariff protectionist measures in an apparent attempt to keep out a multinational TESL workforce, effectively going against the spirit of globalization. This paper highlights some of the differences between South Korean TEFL and TESL in Ontario; for the most part…

  19. CANDU in-reactor quantitative visual-based inspection techniques

    Science.gov (United States)

    Rochefort, P. A.

    2009-02-01

    This paper describes two separate visual-based inspection procedures used at CANDU nuclear power generating stations. The techniques are quantitative in nature and are delivered and operated in highly radioactive environments with access that is restrictive, and in one case is submerged. Visual-based inspections at stations are typically qualitative in nature. For example a video system will be used to search for a missing component, inspect for a broken fixture, or locate areas of excessive corrosion in a pipe. In contrast, the methods described here are used to measure characteristic component dimensions that in one case ensure ongoing safe operation of the reactor and in the other support reactor refurbishment. CANDU reactors are Pressurized Heavy Water Reactors (PHWR). The reactor vessel is a horizontal cylindrical low-pressure calandria tank approximately 6 m in diameter and length, containing heavy water as a neutron moderator. Inside the calandria, 380 horizontal fuel channels (FC) are supported at each end by integral end-shields. Each FC holds 12 fuel bundles. The heavy water primary heat transport water flows through the FC pressure tube, removing the heat from the fuel bundles and delivering it to the steam generator. The general design of the reactor governs both the type of measurements that are required and the methods to perform the measurements. The first inspection procedure is a method to remotely measure the gap between FC and other in-core horizontal components. The technique involves delivering vertically a module with a high-radiation-resistant camera and lighting into the core of a shutdown but fuelled reactor. The measurement is done using a line-of-sight technique between the components. Compensation for image perspective and viewing elevation to the measurement is required. The second inspection procedure measures flaws within the reactor's end shield FC calandria tube rolled joint area. The FC calandria tube (the outer shell of the FC) is

  20. Trio Estonia esineb Lõuna-Ontarios

    Index Scriptorium Estoniae

    2012-01-01

    Lõuna-Ontario muusikahuvilistel on tänu Eesti Sihtkapitalile Kanadas ja Cathedral Bluffs sümfooniaorkestrile harukordne võimalus saada oktoobrikuus osa kõrgetasemelise Trio Estonia musitseerimisest

  1. Western Ontario: Waterfowl breeding population survey: 1986

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for western Ontario during 1986. The primary purpose of the survey is to provide...

  2. Western Ontario: Waterfowl breeding population survey: 1989

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for western Ontario during 1989. The primary purpose of the survey is to provide...

  3. Western Ontario: Waterfowl breeding population survey: 1995

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for western Ontario during 1995. The primary purpose of the survey is to provide...

  4. Western Ontario: Waterfowl breeding population survey: 1993

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for western Ontario during 1993. The primary purpose of the survey is to provide...

  5. Western Ontario: Waterfowl breeding population survey: 1994

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for western Ontario during 1994. The primary purpose of the survey is to provide...

  6. Western Ontario: Waterfowl breeding population survey: 1996

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for western Ontario during 1996. The primary purpose of the survey is to provide...

  7. Western Ontario: Waterfowl breeding population survey: 1987

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for western Ontario during 1987. The primary purpose of the survey is to provide...

  8. Western Ontario: Waterfowl breeding population survey: 1992

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for western Ontario during 1992. The primary purpose of the survey is to provide...

  9. The Ontario Brain Institute: completing the circle.

    Science.gov (United States)

    Stuss, Donald T

    2014-11-01

    The Province of Ontario recognized the pressing need to improve the understanding, diagnosis, and treatment of brain disorders. It also recognized that maximizing the existing strengths through a province-wide integrated approach was a pivotal mechanism. To achieve this, the Province established the Ontario Brain Institute. The goal of this article is to introduce the elements of the Ontario Brain Institute to the neuroscience community: the motivation for establishing it, the philosophy behind its creation, the principles guiding its development, the rapid evolution of its functional structure, the tools available to achieve its vision, and the management structure to ensure success. The singular goal of the Province and the Ontario Brain Institute is a comprehensive system that assures that basic research is embedded in the clinical system and is facilitating product development to accelerate benefits to both health and the economy of health: science with impact.

  10. Western Ontario: Waterfowl breeding population survey: 1990

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for western Ontario during 1990. The primary purpose of the survey is to provide...

  11. Western Ontario: Waterfowl breeding population survey: 1997

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for western Ontario during 1997. The primary purpose of the survey is to provide...

  12. Western Ontario: Waterfowl breeding population survey: 1988

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for western Ontario during 1988. The primary purpose of the survey is to provide...

  13. Reactor Physics

    Energy Technology Data Exchange (ETDEWEB)

    Ait Abderrahim, A

    2001-04-01

    The Reactor Physics and MYRRHA Department of SCK-CEN offers expertise in various areas of reactor physics, in particular in neutronics calculations, reactor dosimetry, reactor operation, reactor safety and control and non-destructive analysis of reactor fuel. This expertise is applied in the Department's own research projects in the VENUS critical facility, in the BR1 reactor and in the MYRRHA project (this project aims at designing a prototype Accelerator Driven System). Available expertise is also used in programmes external to the Department such as the reactor pressure steel vessel programme, the BR2 reactor dosimetry, and the preparation and interpretation of irradiation experiments by means of neutron and gamma calculations. The activities of the Fuzzy Logic and Intelligent Technologies in Nuclear Science programme cover several domains outside the department. Progress and achievements in these topical areas in 2000 are summarised.

  14. Reactor safeguards

    CERN Document Server

    Russell, Charles R

    1962-01-01

    Reactor Safeguards provides information for all who are interested in the subject of reactor safeguards. Much of the material is descriptive although some sections are written for the engineer or physicist directly concerned with hazards analysis or site selection problems. The book opens with an introductory chapter on radiation hazards, the construction of nuclear reactors, safety issues, and the operation of nuclear reactors. This is followed by separate chapters that discuss radioactive materials, reactor kinetics, control and safety systems, containment, safety features for water reactor

  15. Reactor operation

    CERN Document Server

    Shaw, J

    2013-01-01

    Reactor Operation covers the theoretical aspects and design information of nuclear reactors. This book is composed of nine chapters that also consider their control, calibration, and experimentation.The opening chapters present the general problems of reactor operation and the principles of reactor control and operation. The succeeding chapters deal with the instrumentation, start-up, pre-commissioning, and physical experiments of nuclear reactors. The remaining chapters are devoted to the control rod calibrations and temperature coefficient measurements in the reactor. These chapters also exp

  16. Honouring and Sustaining the Teaching Profession in Ontario. Ontario College of Teachers.

    Science.gov (United States)

    Grant, Linda R.; Adamson, Gary; Craig, Allan; Marrin, Mary; Squire, Frances A.

    This paper describes theoretical, political, and practical contexts for developing standards of practice for teaching, creating a framework for career-long professional learning and establishing a set of ethical standards for the profession. It positions the work of the Ontario College of Teachers within the broader context of Ontario education…

  17. Reactor Neutrinos

    OpenAIRE

    Soo-Bong Kim; Thierry Lasserre; Yifang Wang

    2013-01-01

    We review the status and the results of reactor neutrino experiments. Short-baseline experiments have provided the measurement of the reactor neutrino spectrum, and their interest has been recently revived by the discovery of the reactor antineutrino anomaly, a discrepancy between the reactor neutrino flux state of the art prediction and the measurements at baselines shorter than one kilometer. Middle and long-baseline oscillation experiments at Daya Bay, Double Chooz, and RENO provided very ...

  18. BOILING REACTORS

    Science.gov (United States)

    Untermyer, S.

    1962-04-10

    A boiling reactor having a reactivity which is reduced by an increase in the volume of vaporized coolant therein is described. In this system unvaporized liquid coolant is extracted from the reactor, heat is extracted therefrom, and it is returned to the reactor as sub-cooled liquid coolant. This reduces a portion of the coolant which includes vaporized coolant within the core assembly thereby enhancing the power output of the assembly and rendering the reactor substantially self-regulating. (AEC)

  19. Membrane reactor. Membrane reactor

    Energy Technology Data Exchange (ETDEWEB)

    Shindo, Y.; Wakabayashi, K. (National Chemical Laboratory for Industry, Tsukuba (Japan))

    1990-08-05

    Many reaction examples were introduced of membrane reactor, to be on the point of forming a new region in the field of chemical technology. It is a reactor to exhibit excellent function, by its being installed with membrane therein, and is generally classified into catalyst function type and reaction promotion type. What firstly belongs to the former is stabilized zirconia, where oxygen, supplied to the cathodic side of membrane with voltage, impressed thereon, becomes O {sup 2 {minus}} to be diffused through the membrane and supplied, as variously activated oxygenous species, on the anodic side. Examples with many advantages can be given such as methane coupling, propylene oxidation, methanating reaction of carbon dioxide, etc. Apart, palladium film and naphion film also belong to the former. While examples of the latter comprise, among others, decomposition of hydrogen sulfide by porous glass film and dehydrogenation of cyclohexane or palladium alloy film, which are expected to be developed and materialized in the industry. 33 refs., 8 figs.

  20. Early Days for the Differentiation Policy Framework in Ontario

    Science.gov (United States)

    Sianos, Helen

    2017-01-01

    The Ontario Ministry of Training, Colleges and Universities in Canada released "Ontario's Differentiation Policy Framework for Postsecondary Education" in 2013. This chapter examines the mandate as it pertains to the college sector.

  1. Removal of gadolinium, a neutron poison from the moderator system of nuclear reactors.

    Science.gov (United States)

    Rufus, A L; Kumar, Padma S; Jeena, K; Velmurugan, S

    2017-08-03

    Gadolinium as gadolinium nitrate is used as neutron poison in the moderator system for regulating and controlling the power generation of Pressurized Heavy Water Reactors (PHWR) and proposed to be used in Advanced Heavy Water Reactors (AHWR) owing to its high neutron absorption cross section. Removal of the added gadolinium nitrate (Gd(3+) and NO3(-)) from the system after its intended use is done using ion exchange resins. In the present investigation, attempts have been made to optimize the ion exchange process for generation of low radioactive waste and maximize utilization of the ion exchange resins by employing different types of resins and different modes of operation. The investigations revealed that use of mixed bed (MB) resin column consisting of Strong Acid Cation (SAC) resin and Strong Base Anion (SBA) resin followed by SAC resin column is efficient in removing the Gd(3+) and NO3(-) from the system besides maintaining the pH of the moderator system in the desirable regime, where gadolinium does not get precipitated as its hydroxide. Copyright © 2017 Elsevier B.V. All rights reserved.

  2. Lessons learned from Ontario wind energy disputes

    Science.gov (United States)

    Fast, Stewart; Mabee, Warren; Baxter, Jamie; Christidis, Tanya; Driver, Liz; Hill, Stephen; McMurtry, J. J.; Tomkow, Melody

    2016-02-01

    Issues concerning the social acceptance of wind energy are major challenges for policy-makers, communities and wind developers. They also impact the legitimacy of societal decisions to pursue wind energy. Here we set out to identify and assess the factors that lead to wind energy disputes in Ontario, Canada, a region of the world that has experienced a rapid increase in the development of wind energy. Based on our expertise as a group comprising social scientists, a community representative and a wind industry advocate engaged in the Ontario wind energy situation, we explore and suggest recommendations based on four key factors: socially mediated health concerns, the distribution of financial benefits, lack of meaningful engagement and failure to treat landscape concerns seriously. Ontario's recent change from a feed-in-tariff-based renewable electricity procurement process to a competitive bid process, albeit with more attention to community engagement, will only partially address these concerns.

  3. Assessing Ontario's Personal Support Worker Registry

    Directory of Open Access Journals (Sweden)

    Audrey Laporte

    2013-08-01

    Full Text Available In response to the growing role of personal support workers (PSWs in the delivery of health care services to Ontarians, the Ontario government has moved forward with the creation of a PSW registry. This registry will be mandatory for all PSWs employed by publicly funded health care employers, and has the stated objectives of better highlighting the work that PSWs do in Ontario, providing a platform for PSWs and employers to more easily access the labour market, and to provide government with information for human resources planning. In this paper we consider the factors that brought the creation of a PSW registry onto the Ontario government’s policy agenda, discuss how the registry is being implemented, and provide an analysis of the strengths and weaknesses of this policy change.

  4. The Ontario Telemedicine Network: a case report.

    Science.gov (United States)

    Brown, Edward M

    2013-05-01

    This article describes the evolution, current status, and future prospects of the Ontario Telemedicine Network (OTN). Started in the late 1990s (and formally established in 2006), OTN is a not-for-profit corporation primarily funded by the Government of Ontario, Canada, that aims to improve access to and quality of care throughout the Province. It covers a land mass larger than France and serves a population of just over 13 million, the vast majority of which live in a narrow strip close to the U.S. border. Telemedicine has been effective in reducing travel to usual sources of care, reducing hospital admissions, and improving efficiency and prompt access to care. The diffusion of telemedicine is accelerating in Ontario, and it is becoming an integral part of the health system.

  5. "Strengthening" Ontario Universities: A Neoliberal Reconstruction of Higher Education

    Science.gov (United States)

    Rigas, Bob; Kuchapski, Renée

    2016-01-01

    This paper reviews neoliberalism as an ideology that has influenced higher education generally and Ontario higher education in particular. It includes a discourse analysis of "Strengthening Ontario's Centres of Creativity, Innovation and Knowledge" (Ontario Ministry of Training, Colleges, and Universities, 2012), a government discussion…

  6. Opening Doors to Nursing Degrees: A Proposal from Ontario's Colleges

    Science.gov (United States)

    Colleges Ontario, 2010

    2010-01-01

    Ontario needs to expand nursing education options to improve access to the nursing profession, create better pathways amongst all nursing occupations, and build Ontario's capacity to meet the province's long-term nursing needs. Ontario's colleges are capable of playing a larger role within a long-term provincial strategy for sustaining and…

  7. A Report on Accounting Education in Ontario Universities.

    Science.gov (United States)

    Council of Ontario Universities, Toronto.

    A 1981 report on accounting education in Ontario universities, which was prepared by a study group of the Council of Ontario Universities (COU), is presented. The objective was to advise the COU on the feasibility of establishing a professional school or faculty of accounting in one or more Ontario universities. Attention was directed to the…

  8. A New Vision for Higher Education in Ontario: Submitted by the Presidents of Ontario's 24 Public Colleges

    Science.gov (United States)

    Colleges Ontario, 2009

    2009-01-01

    Ontario has an opportunity to implement meaningful and transformational changes that exploit the potential for growth in the new economy and drive it's prosperity to unprecedented levels. But the threats to Ontario's future are just as great. Failing to move forward now with significant measures could leave Ontario unprepared for the challenges…

  9. Transforming Ontario's Apprenticeship Training System: Supplying the Tradespersons Needed for Sustained Growth--A Proposal from Ontario's Colleges

    Science.gov (United States)

    Colleges Ontario, 2009

    2009-01-01

    Ontario's colleges share the provincial government's belief that apprenticeship must play a greater role in addressing skills shortages and contributing to innovative, high-performance workplaces that enhance Ontario's competitiveness. Given the severity of the economic downturn, Ontario faces an immediate, serious challenge as apprenticeship…

  10. Employer-Supported Child Care in Ontario.

    Science.gov (United States)

    Ontario Ministry of Community and Social Services, Toronto.

    Six case studies describing current employer-supported child care services in Ontario are presented. The studies describe the PLADEC Day Care Center of the Kingston Psychiatric Hospital, the day care center at the Chedoke-McMaster Hospitals in Hamilton, the Early Learning Centre at Durham College in Oshawa, the Hydrokids day care center at the…

  11. Measuring Social Capital in Hamilton, Ontario

    Science.gov (United States)

    Kitchen, Peter; Williams, Allison; Simone, Dylan

    2012-01-01

    Social capital has been studied by academics for more than 20 years and within the past decade there has been an explosion of growth in research linking social capital to health. This paper investigates social capital in Hamilton, Ontario by way of a telephone survey of 1,002 households in three neighbourhood groups representing high, mixed and…

  12. Marketing the College Brand in Ontario

    Science.gov (United States)

    Holgerson, Ronald

    2005-01-01

    Since inception of the Ontario college system in 1967, the quality of a diploma or certificate in comparison to a university degree has been perceived as an inferior rather than alternative academic credential. As public institutions, community colleges are mandated to respond to regional labour force needs, and to provide graduates who will…

  13. The fruit flies (Tephritidae) of Ontario

    Science.gov (United States)

    Thirteen species of Tephritidae are newly recorded from Ontario, and alternative format keys are provided to the 31 genera and 72 species of fruit fly now known from, or likely to occur, in the province. Standard dichotomous keys to genera, and simplified field keys to genera and species are provide...

  14. Measuring Social Capital in Hamilton, Ontario

    Science.gov (United States)

    Kitchen, Peter; Williams, Allison; Simone, Dylan

    2012-01-01

    Social capital has been studied by academics for more than 20 years and within the past decade there has been an explosion of growth in research linking social capital to health. This paper investigates social capital in Hamilton, Ontario by way of a telephone survey of 1,002 households in three neighbourhood groups representing high, mixed and…

  15. Ontario's Quality Assurance Framework: A Critical Response

    Science.gov (United States)

    Heap, James

    2013-01-01

    Ontario's Quality Assurance Framework (QAF) is reviewed and found not to meet all five criteria proposed for a strong quality assurance system focused on student learning. The QAF requires a statement of student learning outcomes and a method and means of assessing those outcomes, but it does not require that data on achievement of intended…

  16. The Status of Benthos in Lake Ontario

    Science.gov (United States)

    The benthic community of Lake Ontario was dominated by an amphipod (Diporeia spp.) prior to the 1990’s. Two dreissenid mussel species D. polymorpha (zebra) and D. bugensis (quagga) were introduced in 1989 and 1991 via ballast water exchange. D. bugensis was observed as deep as 85...

  17. Multifunctional reactors

    NARCIS (Netherlands)

    Westerterp, K.R.

    1992-01-01

    Multifunctional reactors are single pieces of equipment in which, besides the reaction, other functions are carried out simultaneously. The other functions can be a heat, mass or momentum transfer operation and even another reaction. Multifunctional reactors are not new, but they have received much

  18. Reactor vessel

    OpenAIRE

    Makkee, M.; Kapteijn, F.; Moulijn, J.A

    1999-01-01

    A reactor vessel (1) comprises a reactor body (2) through which channels (3) are provided whose surface comprises longitudinal inwardly directed parts (4) and is provided with a catalyst (6), as well as buffer bodies (8, 12) connected to the channels (3) on both sides of the reactor body (2) and comprising connections for supplying (9, 10, 11) and discharging (13, 14, 15) via the channels (3) gases and/or liquids entering into a reaction with each other and substances formed upon this reactio...

  19. Ontario Hydro experience in the identification and mitigation of potential failures in safety critical software systems

    Energy Technology Data Exchange (ETDEWEB)

    Huget, R.G.; Viola, M.; Froebel, P.A. [Ontario Hydro, Toronto, Ontario (Canada)

    1995-08-01

    Ontario Hydro has had experience in designing and qualifying safety critical software used in the reactor shutdown systems of its nuclear generating stations. During software design, an analysis of system level hazards and potential hardware failure effects provide input to determining what safeguards will be needed. One form of safeguard, called software self checks, continually monitor the health of the computer on line. The design of self checks usually is a trade off between the amount of computing resources required, the software complexity, and the level of safeguarding provided. As part of the software verification activity, a software hazards analysis is performed, which identifiers any failure modes that could lead to the software causing an unsafe state, and which recommends changes to mitigate that potential. These recommendations may involve a re-structuring of the software to be more resistant to failure, or the introduction of other safeguarding measures. This paper discusses how Ontario Hydro has implemented these aspects of software design and verification into safety critical software used in reactor shutdown systems.

  20. Chemical Reactors.

    Science.gov (United States)

    Kenney, C. N.

    1980-01-01

    Describes a course, including content, reading list, and presentation on chemical reactors at Cambridge University, England. A brief comparison of chemical engineering education between the United States and England is also given. (JN)

  1. Reactor Neutrinos

    Directory of Open Access Journals (Sweden)

    Soo-Bong Kim

    2013-01-01

    Full Text Available We review the status and the results of reactor neutrino experiments. Short-baseline experiments have provided the measurement of the reactor neutrino spectrum, and their interest has been recently revived by the discovery of the reactor antineutrino anomaly, a discrepancy between the reactor neutrino flux state of the art prediction and the measurements at baselines shorter than one kilometer. Middle and long-baseline oscillation experiments at Daya Bay, Double Chooz, and RENO provided very recently the most precise determination of the neutrino mixing angle θ13. This paper provides an overview of the upcoming experiments and of the projects under development, including the determination of the neutrino mass hierarchy and the possible use of neutrinos for society, for nonproliferation of nuclear materials, and geophysics.

  2. NUCLEAR REACTOR

    Science.gov (United States)

    Miller, H.I.; Smith, R.C.

    1958-01-21

    This patent relates to nuclear reactors of the type which use a liquid fuel, such as a solution of uranyl sulfate in ordinary water which acts as the moderator. The reactor is comprised of a spherical vessel having a diameter of about 12 inches substantially surrounded by a reflector of beryllium oxide. Conventionnl control rods and safety rods are operated in slots in the reflector outside the vessel to control the operation of the reactor. An additional means for increasing the safety factor of the reactor by raising the ratio of delayed neutrons to prompt neutrons, is provided and consists of a soluble sulfate salt of beryllium dissolved in the liquid fuel in the proper proportion to obtain the result desired.

  3. Reactor Engineering

    Science.gov (United States)

    Lema, Juan M.; López, Carmen; Eibes, Gemma; Taboada-Puig, Roberto; Moreira, M. Teresa; Feijoo, Gumersindo

    In this chapter, the engineering aspects of processes catalyzed by peroxidases will be presented. In particular, a discussion of the existing technologies that utilize peroxidases for different purposes, such as the removal of recalcitrant compounds or the synthesis of polymers, is analyzed. In the first section, the essential variables controlling the process will be investigated, not only those that are common in any enzymatic system but also those specific to peroxidative reactions. Next, different reactor configurations and operational modes will be proposed, emphasizing their suitability and unsuitability for different systems. Finally, two specific reactors will be described in detail: enzymatic membrane reactors and biphasic reactors. These configurations are especially valuable for the treatment of xenobiotics with high and poor water solubility, respectively.

  4. An Outbreak of Foodborne Botulism in Ontario

    Directory of Open Access Journals (Sweden)

    Mona R Loutfy

    2003-01-01

    Full Text Available Botulism is a rare paralytic illness resulting from a potent neurotoxin produced by Clostridium botulinum. Botulism in Canada is predominately due to C botulinum type E and affects mainly the First Nations and Inuit populations. The most recent outbreak of botulism in Ontario was in Ottawa in 1991 and was caused by C botulinum type A. We report an outbreak of foodborne type B botulism in Ontario, which implicated home-canned tomatoes. The outbreak was characterized by mild symptoms in two cases and moderately severe illness in one case. The investigation shows the importance of considering the diagnosis of botulism in patients presenting with cranial nerve and autonomic dysfunction, especially when combined with gastrointestinal complaints; it also highlights the importance of proper home canning technique.

  5. Reactor Neutrinos

    OpenAIRE

    Lasserre, T.; Sobel, H.W.

    2005-01-01

    We review the status and the results of reactor neutrino experiments, that toe the cutting edge of neutrino research. Short baseline experiments have provided the measurement of the reactor neutrino spectrum, and are still searching for important phenomena such as the neutrino magnetic moment. They could open the door to the measurement of coherent neutrino scattering in a near future. Middle and long baseline oscillation experiments at Chooz and KamLAND have played a relevant role in neutrin...

  6. Upgrading the dosimetry at Ontario Hydro

    Energy Technology Data Exchange (ETDEWEB)

    Hirning, C.R. [Ontario Hydro, Whitby, ON (Canada). Health Physics Dept.

    1996-12-01

    Ontario Hydro has embarked upon a major programme to replace and upgrade its external dosimetry systems. In two year`s time, the utility expects to have two state-of-the-art dosimetry systems in place: a new TLD dosimetry of legal record that was designed nearly 30 years ago; and an electronic dosimetry system which could eventually replace the TLD as the primary system. (Author).

  7. Lake trout rehabilitation in Lake Ontario

    Science.gov (United States)

    Elrod, Joseph H.; O'Gorman, Robert; Schneider, Clifford P.; Eckert, Thomas H.; Schaner, Ted; Bowlby, James N.; Schleen, Larry P.

    1995-01-01

    Attempts to maintain the native lake trout (Salvelinus namaycush) population in Lake Ontario by stocking fry failed and the species was extirpated by the 1950s. Hatchery fish stocked in the 1960s did not live to maturity because of sea lamprey (Petromyzon marinus) predation and incidental commercial harvest. Suppression of sea lampreys began with larvicide treatments of Lake Ontario tributaries in 1971 and was enhanced when the tributaries of Oneida Lake and Lake Erie were treated in the 1980s. Annual stocking of hatchery fish was resumed with the 1972 year class and peaked at about 1.8 million yearlings and 0.3 million fingerlings from the 1985–1990 year classes. Survival of stocked yearlings declined over 50% in the 1980 s and was negatively correlated with the abundance of lake trout > 550 mm long (r = −0.91, P < 0.01, n = 12). A slot length limit imposed by the State of New York for the 1988 fishing season reduced angler harvest. Angler harvest in Canadian waters was 3 times higher in eastern Lake Ontario than in western Lake Ontario. For the 1977–1984 year classes, mean annual survival rate of lake trout age 6 and older was 0.45 (range: 0.35–0.56). In U.S. waters during 1985–1992, the total number of lake trout harvested by anglers was about 2.4 times greater than that killed by sea lampreys. The number of unmarked lake trout < 250 mm long in trawl catches in 1978–1992 was not different from that expected due to loss of marks and failure to apply marks at the hatchery, and suggested that recruitment of naturally-produced fish was nil. However, many of the obstacles which may have impeded lake trout rehabilitation in Lake Ontario during the 1980s are slowly being removed, and there are signs of a general ecosystem recovery. Significant recruitment of naturally produced lake trout by the year 2000, one interim objective of the rehabilitation plan for the Lake, may be achieved.

  8. Bioconversion reactor

    Science.gov (United States)

    McCarty, Perry L.; Bachmann, Andre

    1992-01-01

    A bioconversion reactor for the anaerobic fermentation of organic material. The bioconversion reactor comprises a shell enclosing a predetermined volume, an inlet port through which a liquid stream containing organic materials enters the shell, and an outlet port through which the stream exits the shell. A series of vertical and spaced-apart baffles are positioned within the shell to force the stream to flow under and over them as it passes from the inlet to the outlet port. The baffles present a barrier to the microorganisms within the shell causing them to rise and fall within the reactor but to move horizontally at a very slow rate. Treatment detention times of one day or less are possible.

  9. Insegnamiento dell'italiano nell'Ontario (The Teaching of Italian in Ontario)

    Science.gov (United States)

    Verna, Anthony

    1972-01-01

    Paper read at the International Congress of Teachers of Italian held at the Universita Italiana per Stranieri in Perugia, Italy, August 27-28, 1971. Discusses the patterns of growth of Italian studies in Ontario at high school and university levels. (DS)

  10. Insegnamiento dell'italiano nell'Ontario (The Teaching of Italian in Ontario)

    Science.gov (United States)

    Verna, Anthony

    1972-01-01

    Paper read at the International Congress of Teachers of Italian held at the Universita Italiana per Stranieri in Perugia, Italy, August 27-28, 1971. Discusses the patterns of growth of Italian studies in Ontario at high school and university levels. (DS)

  11. Leak detection capability in CANDU reactors

    Energy Technology Data Exchange (ETDEWEB)

    Azer, N.; Barber, D.H.; Boucher, P.J. [and others

    1997-04-01

    This paper addresses the moisture leak detection capability of Ontario Hydro CANDU reactors which has been demonstrated by performing tests on the reactor. The tests confirmed the response of the annulus gas system (AGS) to the presence of moisture injected to simulate a pressure tube leak and also confirmed the dew point response assumed in leak before break assessments. The tests were performed on Bruce A Unit 4 by injecting known and controlled rates of heavy water vapor. To avoid condensation during test conditions, the amount of moisture which could be injected was small (2-3.5 g/hr). The test response demonstrated that the AGS is capable of detecting and annunciating small leaks. Thus confidence is provided that it would alarm for a growing pressure tube leak where the leak rate is expected to increase to kg/hr rapidly. The measured dew point response was close to that predicted by analysis.

  12. Air Quality in the Central Ontario Region

    Science.gov (United States)

    Gbor, P. K.; Meng, F.; Singh, R.; Galvez, O.; Sloan, J. J.

    2004-12-01

    The Central Ontario Region (COR) is the most densely populated area in Canada. With a population of 7.3 million, it contains 23% of the total population of Canada. It extends from the extreme south west end of Ontario to the eastern end of the Greater Toronto Area (GTA) and includes the Niagara, Hamilton and Waterloo Regions,. The air quality of this region is frequently severely impaired in the summer months. In the larger metropolitan areas (Toronto and Hamilton) air pollution is a concern throughout the year. Local health authorities attribute about 1000 premature deaths per year in the GTA alone to air pollution. Average air pollution levels in Ontario have decreased significantly during the past 30 years, despite significant growth in both population and industry. The concentrations of SO2 and CO have decreased by over 80% and the concentration of NOX has decreased by about 50% over the past 26 years. Currently, the concentrations of NOX, CO, SO2 and VOCs in the COR are well below the Provincial and Federal air quality criteria. Ozone, PM2.5 and PM10, however, remain above the Provincial guidelines, so smog still remains a problem. The pollutants in the atmosphere of the COR are caused by both local emissions and long range transport. The COR contributes over 50% of the NOx, VOC and CO emissions in Ontario. Over 58% of NOX and CO emissions in the COR are due to mobile sources while about 50% of VOC and PM emissions are due to area sources. The proximity of the COR to the Canada-U.S. border makes it vulnerable to long range transport of pollutants stemming from the much larger population in the United States. The Canadian government, industries and non-governmental organizations are all taking steps to help reduce the level of pollution in Canada. The Canadian federal government also participates in extensive consultations and cooperative programs with the United States designed to reduce the mutually detrimental effects of cross-border pollution. These

  13. Municipal-Aboriginal Relations: An Ontario Perspective

    Directory of Open Access Journals (Sweden)

    Alia Hanif

    2009-05-01

    Full Text Available In Canada, there are many examples of respectful relationships between municipalities and Aboriginal communities. Where Aboriginal peoples have concerns with the actions or inaction of governments (be they federal, provincial or municipal governments, it is often municipalities that are directly affected by the measures taken by Aboriginal peoples to express their concerns. To help reduce possible conflicts at the municipal level and find shared solutions, the Ministry of Municipal Affairs and Housing of the Province of Ontario has been advising municipalities in the province on the benefits of engaging and developing relationships with Aboriginal peoples.

  14. Evaluation of network RTK in southern Ontario

    Science.gov (United States)

    Saeidi, Amir

    Network Real-Time Kinematic (RTK) has become popular in the past decade as an efficient method of precise, real-time positioning. Its relatively low cost and ease-of-use makes it a good candidate to replace static relative Global Positioning System (GPS) in, e.g., land surveying. A lack of previous studies aroused the interest of the Ministry of Transportation of Ontario (MTO) to request York University to complete a comprehensive study of the performance of network RTK in southern Ontario and whether it is a suitable method for MTO control surveying. Extensive fieldwork campaigns in the winter of 2010 and summer of 2011 were carried out and ˜300 hours of static and ˜50 hours of kinematic network RTK data were collected from three different service providers. A set of metrics were defined to characterize the performance of network RTK: availability, time-to-first-fix, precision, accuracy, solution integrity and moving average filtering. The data were used to characterize the horizontal performance of network RTK services and the results along with a set of guidelines and specifications were provided (Saeidi et al., 2011; Bisnath et al., 2012). This thesis presents the horizontal network RTK performance evaluation, as well as the vertical and kinematic performance. The aforementioned metrics are used to evaluate the quality of network RTK in southern Ontario, and to compare to similar services available in other locations. The result have revealed expected ˜2-3 cm (95%) precision for the horizontal and vertical components; however, large horizontal and vertical biases were observed, which can be as high as 4 cm. The solution integrity has shown that typically, 3σ solution uncertainties are larger than the actual errors, unless large biases exist. Moving average filtering has confirmed that due to large outliers and spikes in the solutions, 1 second observation periods are not sufficient to provide a precise solution; larger observation windows should be used, e

  15. Pedagogical over Punitive: The Academic Integrity Websites of Ontario Universities

    Science.gov (United States)

    Griffith, Jane

    2013-01-01

    This study is a snapshot of how Ontario universities are currently promoting academic integrity (AI) online. Rather than concentrating on policies, this paper uses a semiotic methodology to consider how the websites of Ontario's publicly funded universities present AI through language and image. The paper begins by surveying each website and…

  16. Ontario Kindergarten Teachers' Social Media Discussions about Full Day Kindergarten

    Science.gov (United States)

    Lynch, Meghan

    2014-01-01

    This exploratory netnographic study describes how a sample of Ontario kindergarten teachers perceive the new Ontario Full Day Kindergarten (FDK) curriculum. Discussions from teacher message boards, the comment sections of online news articles, and interviews with kindergarten teachers were analyzed and coded using a qualitative approach. Analysis…

  17. Education Governance Reform in Ontario: Neoliberalism in Context

    Science.gov (United States)

    Sattler, Peggy

    2012-01-01

    This paper explores the relationship between neoliberal ideology and the discourse and practice of education governance reform in Ontario over the last two decades. It focuses on changes in education governance introduced by successive Ontario governments: the NDP government from 1990 to 1995, the Progressive Conservative government from 1995 to…

  18. Sonochemical Reactors.

    Science.gov (United States)

    Gogate, Parag R; Patil, Pankaj N

    2016-10-01

    Sonochemical reactors are based on the generation of cavitational events using ultrasound and offer immense potential for the intensification of physical and chemical processing applications. The present work presents a critical analysis of the underlying mechanisms for intensification, available reactor configurations and overview of the different applications exploited successfully, though mostly at laboratory scales. Guidelines have also been presented for optimum selection of the important operating parameters (frequency and intensity of irradiation, temperature and liquid physicochemical properties) as well as the geometric parameters (type of reactor configuration and the number/position of the transducers) so as to maximize the process intensification benefits. The key areas for future work so as to transform the successful technique at laboratory/pilot scale into commercial technology have also been discussed. Overall, it has been established that there is immense potential for sonochemical reactors for process intensification leading to greener processing and economic benefits. Combined efforts from a wide range of disciplines such as material science, physics, chemistry and chemical engineers are required to harness the benefits at commercial scale operation.

  19. A Atmospheric Dispersion Model for the Sudbury, Ontario, Area.

    Science.gov (United States)

    Huhn, Frank Jones

    1982-03-01

    A mathematical model was developed and tested to predict the relationship between sulphur oxide and trace metal emissions from smelters in the Sudbury, Ontario area, and atmospheric, precipitation, lake water and sediment chemistry. The model consists of atmospheric and lake chemistry portions. The atmospheric model is a Gaussian crosswind concentration distribution modification to a box model with a uniform vertical concentration gradient limited by a mixing height. In the near-field Briggs' plume rise and vertical dispersion terms are utilized. Oxidation, wet and dry deposition mechanisms are included to account for the gas, liquid and solid phases separately. Important improvements over existing models include (1) near- and far-field conditions treated in a single model; (2) direct linkage of crosswind dispersion to hourly meteorological observations; (3) utilization of maximum to minimum range of input parameters to realistically model the range of outputs; (4) direct linkage of the atmospheric model to a lake model. Precipitation chemistry as calculated by the atmospheric model is related to lake water and sediment chemistry utilizing a mass balance approach and assuming a continuously stirred reactor (CSTR) model to describe lake circulation. All inputs are atmospheric, modified by hydrology, soil chemistry and sedimentation. Model results were tested by comparison with existing atmospheric and precipitation chemistry measurements, supplemented with analyses of lake water and sediment chemistry collected in a field program. Eight pollutant species were selected for modeling: sulphur dioxide, sulphate ion, hydrogen ion, copper, nickel, lead, zinc, and iron. The model effectively predicts precipitation chemistry within 150 km of Sudbury, with an average prediction to measurement ratio of 90 percent. Atmospheric concentrations are effectively predicted within 80 km, with an average prediction to measurement ratio of 81 percent. Lake chemistry predictions are

  20. Public perceptions of energy issues in Ontario

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-11-01

    In October 2004, the Environics Research Group conducted a telephone survey of 608 adult Ontarians to collect information on matters regarding energy; consumer confidence and protection; responsibilities of the Ontario Energy Board; and consumer information preferences. This report summarizes the key findings of the survey. According to the survey, the most important electricity and natural gas issue was identified as being price and cost issues, followed by reliability of supply, conservation, keeping utilities publicly owned, finding renewable sources of energy, and over-consumption. The survey revealed that Ontarians show much interest in conserving energy to save money, to protect the environment and ensure future energy supply, but they are generally sceptical that their interests are being protected on electricity and natural gas price issues. At least 9 in 10 Ontarians consider the tasks of the Ontario Energy Board to be important. The majority of Ontarians prefer to receive energy conservation information through the mail and from public regulators over a government department or a company. 10 tabs.

  1. Cancer nursing in Ontario: defining nursing roles.

    Science.gov (United States)

    Fitch, Margaret I; Mings, Deborah

    2003-01-01

    The delivery of cancer care in Ontario is facing unprecedented challenges. Shortages in nursing, as in all professional disciplines, are having an impact on the delivery of cancer care. Oncology nurses have a major role to play in the delivery of optimum cancer care. Oncology nursing, when adequately defined and supported, can benefit the cancer delivery system, patients, and families. A primary nursing model is seen as being key to the delivery of optimum cancer care. Primary nursing as a philosophy facilitates continuity of care, coordination of a patient's care plan, and a meaningful ongoing relationship with the patient and his/her family. Primary nursing, when delivered in the collaboration of a nurse-physician team, allows for medical resources to be used appropriately. Defined roles enable nurses to manage patients within their scope of practice in collaboration with physicians. Enacting other nursing roles, such as nurse practitioners and advanced practice nurses, can also enable the health care system to manage a broader number of patients with more complex needs. This article presents a position paper originally written as the basis for an advocacy and education initiative in Ontario. It is shared in anticipation that the work may be useful to oncology nurses in other jurisdictions in their efforts to advance oncology nursing and improvement of patient care.

  2. The Northern Ontario School of Medicine: responding to the needs of the people and communities of Northern Ontario.

    Science.gov (United States)

    Strasser, Roger; Lanphear, Joel

    2008-12-01

    Northern Ontario, like many rural and remote regions around the world, has a chronic shortage of health professionals. Recognizing that medical graduates who have grown up in rural areas are more likely to practice in rural settings, the Government of Ontario, Canada established a new medical school with a social accountability mandate to contribute to improving the health of the peoples and communities of Northern Ontario. The Northern Ontario School of Medicine (NOSM) is a joint initiative of Laurentian University in Sudbury and Lakehead University in Thunder Bay, cities one thousand kilometers apart. The NOSM model of medical education is built on several recent educational developments including rural-based medical education, social accountability of medical education and electronic distance education. This paper describes these developments as background to presenting the Northern Ontario School of Medicine as a socially accountable, geographically distributed rural-based medical school. NOSM MD PROGRAM: The school actively seeks to recruit students for the MD program from Northern Ontario or similar northern, rural, remote, Aboriginal, and Francophone backgrounds. The holistic, cohesive curriculum is grounded in Northern Ontario and relies heavily on broadband electronic communications to support distributed, community engaged learning. Students, both in classroom and clinical settings, explore cases as if they were physicians in Northern Ontario communities. Clinical education takes place in a wide range of community and health service settings so that students can experience the diversity of communities and cultures in Northern Ontario. Although NOSM is still in the early stages of development, there are encouraging signs that the school's evidence-based model of medical education will be successful in developing a sustainable, community responsive health workforce for Northern Ontario.

  3. The Efficacy of Key Performance Indicators in Ontario Universities as Perceived by Key Informants

    Science.gov (United States)

    Chan, Vivian

    2015-01-01

    The Ontario Ministry of Education and Training's Task Force on University Accountability first proposed key performance indicators (KPIs) for colleges and universities in Ontario in the early 1990s. The three main KPIs for Ontario universities are the rates of (1) graduation, (2) employment, and (3) Ontario Student Assistance Program loan default.…

  4. Cross currents : hydroelectricity and the engineering of northern Ontario

    Energy Technology Data Exchange (ETDEWEB)

    Manore, J.L. [Calgary Univ., AB (Canada)

    1999-05-01

    The history of hydroelectric development in northern Ontario was reviewed and analysed with special emphasis on the developments along the Mattagami and Abitibi Rivers. The objective was to examine the important factors that shaped modern hydroelectric development in Canada. System builders, the privately owned Nesbitt Thomson Company, the publicly owned Hydro Electric Power Corporation of Ontario and the eventual evolution of the single power system under Ontario Hydro are chronicled. Broad historical themes such as the technological impacts, regionalism, indigenous rights, plus environmental and economic issues are examined, in addition to an appreciation of the importance of electricity in the manufacturing sector of Ontario, the impact of hydroelectric development on the northern environment and on the northern First Nations, who rely on rivers for their subsistence. Until fairly recently, government policies and interpretations of law often excluded the recognition of Aboriginal uses of river systems, thereby limiting First Nations` peoples ability to practice traditional ways of life. In essence, the book is an account of how the northeastern power system in Ontario shaped the social, political and natural environments and how the development of northeastern power sources by southern power developers shaped the regional interactions between Ontario`s north and south. refs., figs.

  5. Epidemiology of Enterovirus D68 in Ontario.

    Directory of Open Access Journals (Sweden)

    Adriana Peci

    Full Text Available In August 2014, children's hospitals in Kansas City, Missouri and Chicago, Illinois notified the Centers for Disease Control and Prevention (CDC about increased numbers of pediatric patients hospitalized with severe respiratory illness (SRI. In response to CDC reports, Public Health Ontario Laboratories (PHOL launched an investigation of patients being tested for enterovirus D-68 (EV-D68 in Ontario, Canada. The purpose of this investigation was to enhance our understanding of EV-D68 epidemiology and clinical features. Data for this study included specimens submitted for EV-D68 testing at PHOL from September 1, 2014 to October 31, 2014. Comparisons were made between patients who tested positive for the virus (cases and those testing negative (controls. EV-D68 was identified in 153/907 (16.8% of patients tested. In the logistic regression model adjusting for age, sex, setting and time to specimen collection, individuals younger than 20 years of age were more likely to be diagnosed with EV-D68 compared to those 20 and over, with peak positivity at ages 5-9 years. Cases were not more likely to be hospitalized than controls. Cases were more likely to be identified in September than October (OR 8.07; 95% CI 5.15 to 12.64. Routine viral culture and multiplex PCR were inadequate methods to identify EV-D68 due to poor sensitivity and inability to differentiate EV-D68 from other enterovirus serotypes or rhinovirus. Testing for EV-D68 in Ontario from July to December, 2014 detected the presence of EV-D68 virus among young children during September-October, 2014, with most cases detected in September. There was no difference in hospitalization status between cases and controls. In order to better understand the epidemiology of this virus, surveillance for EV-D68 should include testing of symptomatic individuals from all treatment settings and patient age groups, with collection and analysis of comprehensive clinical and epidemiological data.

  6. Epidemiology of Enterovirus D68 in Ontario.

    Science.gov (United States)

    Peci, Adriana; Winter, Anne-Luise; Warshawsky, Bryna; Booth, Tim F; Eshaghi, AliReza; Li, Aimin; Perusini, Stephen; Olsha, Romy; Marchand-Austin, Alex; Kristjanson, Erik; Gubbay, Jonathan B

    2015-01-01

    In August 2014, children's hospitals in Kansas City, Missouri and Chicago, Illinois notified the Centers for Disease Control and Prevention (CDC) about increased numbers of pediatric patients hospitalized with severe respiratory illness (SRI). In response to CDC reports, Public Health Ontario Laboratories (PHOL) launched an investigation of patients being tested for enterovirus D-68 (EV-D68) in Ontario, Canada. The purpose of this investigation was to enhance our understanding of EV-D68 epidemiology and clinical features. Data for this study included specimens submitted for EV-D68 testing at PHOL from September 1, 2014 to October 31, 2014. Comparisons were made between patients who tested positive for the virus (cases) and those testing negative (controls). EV-D68 was identified in 153/907 (16.8%) of patients tested. In the logistic regression model adjusting for age, sex, setting and time to specimen collection, individuals younger than 20 years of age were more likely to be diagnosed with EV-D68 compared to those 20 and over, with peak positivity at ages 5-9 years. Cases were not more likely to be hospitalized than controls. Cases were more likely to be identified in September than October (OR 8.07; 95% CI 5.15 to 12.64). Routine viral culture and multiplex PCR were inadequate methods to identify EV-D68 due to poor sensitivity and inability to differentiate EV-D68 from other enterovirus serotypes or rhinovirus. Testing for EV-D68 in Ontario from July to December, 2014 detected the presence of EV-D68 virus among young children during September-October, 2014, with most cases detected in September. There was no difference in hospitalization status between cases and controls. In order to better understand the epidemiology of this virus, surveillance for EV-D68 should include testing of symptomatic individuals from all treatment settings and patient age groups, with collection and analysis of comprehensive clinical and epidemiological data.

  7. Feminism and women's health professions in Ontario.

    Science.gov (United States)

    Adams, Tracey L; Bourgeault, Ivy Lynn

    2003-01-01

    Historically, prevailing gender ideologies were an important element in both the exclusionary strategies employed by male occupational groups and the countervailing responses by female groups. The way in which evolving gender ideologies, and feminism in particular, influence the continuing struggle for greater status and recognition by female professions, however, remains to be fully explored. In this paper, we examine the impact and the role of feminism and feminist ideologies within three female professional projects: nursing, dental hygiene and midwifery in Ontario. We argue that feminism provides an ideology of opposition that enables leaders in these professions to battle against professional inequalities by laying bare the gender inequalities that underlie them. Framing their struggles in feminist terms, female professions also seek recognition for the uniquely female contribution they make to the health care division of labour. At the same time, there exists a tension between ideals of feminism and ideals of professionalism, that has the potential to undermine female professional projects.

  8. Oil heritage district : Lambton County Ontario

    Energy Technology Data Exchange (ETDEWEB)

    Shearer, W. [Wendy Shearer Landscape Architect, Kitchener, ON (Canada)

    2009-07-01

    This paper discussed a project conducted to assess the cultural heritage values of oil field equipment in Lambton County, Ontario. Oil was discovered in the region in 1858, after which a boom and bust cycle of exploration created a large rural-industrial landscape. The region now contains a unique collection of historic oil equipment. The region's industrial footprint is interwoven with village settlements, agricultural settlements, and a railway and road network linking the region to remote refineries. Oil wells in the region still operate using a jerker line system developed in the early twentieth century. The operational oil wells are subject to fluctuating oil prices and environmental protection requirements. The project presents a rare opportunity to place industrial heritage conservation directly in the hands of business operators and regulators, while also functioning as part of a living community. 2 figs.

  9. Expanding Scope of Practice for Ontario Optometrists

    Directory of Open Access Journals (Sweden)

    Emily Bray

    2017-06-01

    Full Text Available In 2011, The Optometry Act, 1991 was amended to include The Designated Drugs and Standards of Practice Regulation which expanded the scope of practice for Ontario optometrists to include prescribing privileges from a specific list of drugs. The goals of the optometry reform were to increase access to care, decrease burden on medical and hospital resources and allow optometrists to practice to their full scope. The policy response was spurred by a recommendation from the Health Professions Regulatory Advisory Council and the prescribing precedence in other Canadian jurisdictions. Bill 171, The Health Systems Improvement Act, amended The Optometry Act, 1991, Section 4 to include the authorized act of prescribing designated drugs, while The Designated Drugs and Standards of Practice, passed on 6 April 2011, listed the individual drugs optometrists are authorized to prescribe. The resulting response of a specific list of authorized drugs was seen as a limiting and inflexible system that will require changes as newer drugs are developed.

  10. Forecasting Ontario's blood supply and demand.

    Science.gov (United States)

    Drackley, Adam; Newbold, K Bruce; Paez, Antonio; Heddle, Nancy

    2012-02-01

    Given an aging population that requires increased medical care, an increasing number of deferrals from the donor pool, and a growing immigrant population that typically has lower donation rates, the purpose of this article is to forecast Ontario's blood supply and demand. We calculate age- and sex-specific donation and demand rates for blood supply based on 2008 data and project demand between 2008 and 2036 based on these rates and using population data from the Ontario Ministry of Finance. Results indicate that blood demand will outpace supply as early as 2012. For instance, while the total number of donations made by older cohorts is expected to increase in the coming years, the number of red blood cell (RBC) transfusions in the 70+ age group is forecasted grow from approximately 53% of all RBC transfusions in 2008 (209,515) in 2008 to 68% (546,996) by 2036. A series of alternate scenarios, including projections based on a 2% increase in supply per year and increased use of apheresis technology, delays supply shortfalls, but does not eliminate them without active management and/or multiple methods to increase supply and decrease demand. Predictions show that demand for blood products will outpace supply in the near future given current age- and sex-specific supply and demand rates. However, we note that the careful management of the blood supply by Canadian Blood Services, along with new medical techniques and the recruitment of new donors to the system, will remove future concerns. © 2012 American Association of Blood Banks.

  11. Epidemiology of myasthenia gravis in Ontario, Canada.

    Science.gov (United States)

    Breiner, Ari; Widdifield, Jessica; Katzberg, Hans D; Barnett, Carolina; Bril, Vera; Tu, Karen

    2016-01-01

    Incidence and prevalence estimates in myasthenia gravis have varied widely. Recent studies based on administrative health data have large sample sizes but lack rigorous validation of MG cases, and have not examined the North American population. Our aim was to explore trends in MG incidence and prevalence for the years 1996-2013 in the province of Ontario, Canada (population 13.5 million). We employed a previously validated algorithm to identify MG cases. Linking with census data allowed for the calculation of crude- and age/sex-standardized incidence and prevalence rates for the years 1996-2013. The regional distribution of MG cases throughout the province was examined. Mean age at the first myasthenia gravis encounter was 60.2 ± 17.1 years. In 2013, there were 3611 prevalent cases in Ontario, and the crude prevalence rate was 32.0/100,000 population. Age- and sex-standardized prevalence rates rose consistently over time from 16.3/100,000 (15.4-17.1) in 1996 to 26.3/100,000 (25.4-27.3) in 2013. Standardized incidence rates remained stable between 1996 (2.7/100,000; 95% CL 2.3-3.0) and 2013 (2.3/100,000; 2.1-2.6). Incidence was highest in younger women and older men, and geographic variation was evident throughout the province. In conclusion, this large epidemiological study shows rising myasthenia gravis prevalence with stable incidence over time, which is likely reflective of patients living longer, possibly due to improved disease treatment. Our findings provide accurate information on the Canadian epidemiology of myasthenia gravis and burden for health care resources planning for the province, respectively.

  12. Investigation of exposure to swine influenza viruses in Ontario (Canada) finisher herds in 2004 and 2005.

    Science.gov (United States)

    Poljak, Zvonimir; Friendship, Robert M; Carman, Susy; McNab, W Bruce; Dewey, Catherine E

    2008-01-01

    The epidemiology of influenza in the North American swine population has changed since the emergence of a triple-reassortant H3N2 influenza virus. Although seen previously in North America, the Ontario swine population had likely been free of viruses of the reassortant H3N2 lineage until 2005. The objective of this study was to investigate the frequency and distribution of exposure to H1N1 and H3N2 subtypes in the Ontario finisher pig population prior to and after the H3N2 outbreak that occurred in 2005. This included investigating prevalence and spatial distribution of positive herds, assessing proportion of random variation at different hierarchical levels, and evaluating selected demographic factors and management procedures as potential risk factors. In total, 919 and 978 sera collected in cross-sectional studies from 46 and 49 finisher herds in 2004 and 2005 were tested by a H1N1 subtype-specific and a H3N2 subtype-specific commercial ELISA. For the H1N1 subtype, the point prevalence of positive herds (>3 reactors) was 19.5% and 30.6% in 2004 and 2005, respectively. For the H3N2 subtype the point prevalence of positive herds (>3 reactors) was 6.5% and 40.8% in 2004 and 2005, respectively. Sera from 2004 that were positive on H3N2 ELISA did not cross-react with any of the H3N2 variants used as antigen on a sequential HI test. Only herds positive for H3N2 subtype in 2005 clustered in space (Pbanks as a useful resource for retrospective comparisons.

  13. Forming ideas about health: a qualitative study of Ontario adolescents

    National Research Council Canada - National Science Library

    Michaelson, Valerie; McKerron, Margaret; Davison, Colleen

    2015-01-01

    ... seeking out the information for a particular purpose. In this Ontario-based qualitative study, grounded theory methods were used to explore ways that health knowledge is obtained in adolescents (age 10-16...

  14. 2001 USACE LRE Topobathy Lidar: Lake Ontario (NY)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Office for Coastal Management received the 2001 Lake Ontario dataset with 2 separate metadata records in 2013 on a hard-drive device from the USGS Center for...

  15. Lake Ontario Tributaries: 2009-2010 Field Data Report

    Science.gov (United States)

    In 2002, EPA began a program to regularly monitor U.S. tributaries to Lake Ontario for the critical pollutants. This report provides program results from 2009-2010, and identifies changes in the monitoring program from prior years.

  16. Waterfowl breeding pair survey: Ontario, Quebec, and New York: 1997

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for Ontario, Quebec, and New York during 1997. The primary purpose of the survey is to...

  17. Western and Central Ontario: Waterfowl breeding population survey: 2000

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for Western and Central Ontario during 2000. The primary purpose of the survey is to...

  18. Hybrid adsorptive membrane reactor

    Science.gov (United States)

    Tsotsis, Theodore T. (Inventor); Sahimi, Muhammad (Inventor); Fayyaz-Najafi, Babak (Inventor); Harale, Aadesh (Inventor); Park, Byoung-Gi (Inventor); Liu, Paul K. T. (Inventor)

    2011-01-01

    A hybrid adsorbent-membrane reactor in which the chemical reaction, membrane separation, and product adsorption are coupled. Also disclosed are a dual-reactor apparatus and a process using the reactor or the apparatus.

  19. D and DR Reactors

    Data.gov (United States)

    Federal Laboratory Consortium — The world's second full-scale nuclear reactor was the D Reactor at Hanford which was built in the early 1940's and went operational in December of 1944.D Reactor ran...

  20. Hybrid adsorptive membrane reactor

    Science.gov (United States)

    Tsotsis, Theodore T.; Sahimi, Muhammad; Fayyaz-Najafi, Babak; Harale, Aadesh; Park, Byoung-Gi; Liu, Paul K. T.

    2011-03-01

    A hybrid adsorbent-membrane reactor in which the chemical reaction, membrane separation, and product adsorption are coupled. Also disclosed are a dual-reactor apparatus and a process using the reactor or the apparatus.

  1. A checklist of the 67 mosquito species of Ontario, Canada.

    Science.gov (United States)

    Giordano, Bryan V; Gasparotto, Alessio; Hunter, Fiona F

    2015-03-01

    We provide an updated checklist of 67 endemic mosquito species known from Ontario, Canada. Nine endemic species are added to the checklist found in Darsie and Ward (2005) : Aedes cantator, Ae. churchillensis, Ae. nigripes, Ae. pullatus, Anopheles perplexens, An. crucians, An. smaragdinus, Culex erraticus, and Cx. salinarius. Only 4 specimens of Ae. albopictus have been recorded in Ontario since 2001 despite concerted efforts to find this species; therefore, it is considered an "accidental" species and is excluded from the checklist.

  2. Implementation of an agency to improve chronic kidney disease care in Ontario: lessons learned by the Ontario Renal Network.

    Science.gov (United States)

    Woodward, Graham L; Iverson, Alex; Harvey, Rebecca; Blake, Peter G

    2015-01-01

    In 2009, Ontario's Ministry of Health and Long-Term Care initiated the transfer of oversight and coordination of chronic kidney disease (CKD) care to the Ontario Renal Network (ORN) under the auspices of Cancer Care Ontario (CCO). The aim was to replicate the quality improvement and change management practices used for cancer control within CKD. Much of the ORN's first three years were dedicated to building the infrastructure necessary to bridge the gap between provincial policy and clinical practice. This article explores the accomplishments, challenges and lessons learned over that period. The results, which are applicable to the management of chronic diseases in Ontario, Canada, and internationally, confirm that sustainable change takes time and requires strong leadership, transparency, accountability and communication, supported by a solid foundation of data and evidence.

  3. Quality legislation: lessons for Ontario from abroad.

    Science.gov (United States)

    Veillard, Jérémy; Tipper, Brenda; Klazinga, Niek

    2012-01-01

    While the Excellent Care for All Act, 2010 (ECFA Act) provides a comprehensive approach to stimulating quality improvement in healthcare, there are other examples of legislations articulating strategies aimed at the same goal but proposing different approaches. This paper reviews quality of care legislations in the Netherlands, the United States, England and Australia, compares those pieces of legislation with the ECFA Act and suggests lessons for Ontario in planning the next stages of its healthcare quality strategy. Notable among the commonalities that the EFCA Act shares with the selected examples of legislation are mandatory reporting of performance results at an organizational level and furthering quality improvement, evidence generation and performance monitoring. However, the EFCA Act does not include any elements of restructuring or competition, unlike some of the other examples. Key to successful transformation of the Ontario healthcare system will be to propose a package of changes that will deal systematically with all aspects of transformation sought (including structural changes, payments systems and elements of competition), will garner support from all the actors, and will be implemented consistently and persistently. Benchmarking on the implementation and impact of reforms with the countries presented in this paper may be an additional important step. Quality of care is a key focus of health system reforms, and in recent years many countries in the Organisation of Economic Co-operation and Development (OECD), including Canada, have developed strategies aimed at improving healthcare quality and patient safety (OECD 2010). Øvretveit and Klazinga propose that national strategies for quality of care can be targeted at different types of health system stakeholders: professionals, healthcare organizations, medical products and technologies, patients and financers (World Health Organization Regional Office for Europe 2008). The generic elements of these

  4. Nuclear reactor neutron shielding

    Energy Technology Data Exchange (ETDEWEB)

    Speaker, Daniel P; Neeley, Gary W; Inman, James B

    2017-09-12

    A nuclear reactor includes a reactor pressure vessel and a nuclear reactor core comprising fissile material disposed in a lower portion of the reactor pressure vessel. The lower portion of the reactor pressure vessel is disposed in a reactor cavity. An annular neutron stop is located at an elevation above the uppermost elevation of the nuclear reactor core. The annular neutron stop comprises neutron absorbing material filling an annular gap between the reactor pressure vessel and the wall of the reactor cavity. The annular neutron stop may comprise an outer neutron stop ring attached to the wall of the reactor cavity, and an inner neutron stop ring attached to the reactor pressure vessel. An excore instrument guide tube penetrates through the annular neutron stop, and a neutron plug comprising neutron absorbing material is disposed in the tube at the penetration through the neutron stop.

  5. Reactor and method of operation

    Science.gov (United States)

    Wheeler, John A.

    1976-08-10

    A nuclear reactor having a flattened reactor activity curve across the reactor includes fuel extending over a lesser portion of the fuel channels in the central portion of the reactor than in the remainder of the reactor.

  6. Market Myths and Facts - the Ontario Context

    Energy Technology Data Exchange (ETDEWEB)

    Dorey, S.

    2007-07-01

    The world has learned much about electricity markets and what they can and can't do over the past few years, but some myths persist. Why they persist is a subject for those who study politics, interests and influence. This paper provides a perspective on myths which have affected the reliable and economic delivery of electricity to customers, particularly with respect to transmission. Hydro One effectively provides the transmission network for the Province of Ontario, Canada. As Hydro One is a wires company, the paper is not intended to address the issues which affect the generation or conservation sectors of the industry, except where they directly relate to the wires. The proposition of this paper is that electricity transmission is best treated as an essential public good. Transmission as a market participant and a traded commodity has generally not worked with respect to assuring that the system continues to be developed to meet the basic need of customers for reliable and affordable electricity. (auth)

  7. Canadian wind energy case studies : Toronto, Ontario

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-01-01

    In 1999, the North Toronto Green Community created the Toronto Renewable Energy Co-operative (TREC) to work on the development of a wind turbine for the city of Toronto. By December 2002, a 750 KW turbine from Lagerwey BV in the Netherlands was installed along the shore of Lake Ontario. It represents one of the most innovative wind power projects, and the first urban wind turbine in North America. WindShare, a separate cooperative created by TREC owns and manages the Exhibition Place Turbine. Power was first generated in January 2003 with an annual output of 1.4 million kWh, the equivalent of reducing 1,400 tonnes of greenhouse gases annually. The total investment was about $1.7 million, with both the planning phase and operational phase of the project bringing in local economic benefits. Wind energy addresses public concerns over the environmental impacts of conventional electricity production. Wind is a renewable energy source that does not contribute to climate change, air and water pollution. In an average year, a 660 KW turbine can produce 2,000 MWh of electricity, enough to power 250 homes. Public support has been very positive for the Exhibition Place wind turbine, which is now a main tourist attraction. Interest in this project has prompted the creation of twelve new community co-ops province-wide. 1 fig.

  8. Oxygen-isotope variations in post-glacial Lake Ontario

    Science.gov (United States)

    Hladyniuk, Ryan; Longstaffe, Fred J.

    2016-02-01

    The role of glacial meltwater input to the Atlantic Ocean in triggering the Younger Dryas (YD) cooling event has been the subject of controversy in recent literature. Lake Ontario is ideally situated to test for possible meltwater passage from upstream glacial lakes and the Laurentide Ice Sheet (LIS) to the Atlantic Ocean via the lower Great Lakes. Here, we use the oxygen-isotope compositions of ostracode valves and clam shells from three Lake Ontario sediment cores to identify glacial meltwater contributions to ancient Lake Ontario since the retreat of the LIS (∼16,500 cal [13,300 14C] BP). Differences in mineralogy and sediment grain size are also used to identify changes in the hydrologic regime. The average lakewater δ18O of -17.5‰ (determined from ostracode compositions) indicates a significant contribution from glacial meltwater. Upon LIS retreat from the St. Lawrence lowlands, ancient Lake Ontario (glacial Lake Iroquois) lakewater δ18O increased to -12‰ largely because of the loss of low-18O glacial meltwater input. A subsequent decrease in lakewater δ18O (from -12 to -14‰), accompanied by a median sediment grain size increase to 9 μm, indicates that post-glacial Lake Ontario received a final pulse of meltwater (∼13,000-12,500 cal [11,100-10,500 14C] BP) before the onset of hydrologic closure. This meltwater pulse, which is also recorded in a previously reported brief freshening of the neighbouring Champlain Valley (Cronin et al., 2012), may have contributed to a weakening of thermohaline circulation in the Atlantic Ocean. After 12,900 cal [11,020 14C] BP, the meltwater presence in the Ontario basin continued to inhibit entry of Champlain seawater into early Lake Ontario. Opening of the North Bay outlet diverted upper Great Lakes water from the lower Great Lakes causing a period (12,300-8300 cal [10,400-7500 14C] BP) of hydrologic closure in Lake Ontario (Anderson and Lewis, 2012). This change is demarcated by a shift to higher δ18Olakewater

  9. Ontario tackles US and domestic air pollution sources

    Energy Technology Data Exchange (ETDEWEB)

    Anon

    2001-06-01

    The province of Ontario is taking strong action to reduce emission from major domestic sources, focusing on smog and climate change-causing emissions. For example, the province has introduced strict air emission limits and mandatory monitoring and reporting, placed a freeze on the sale of coal-fired generating plants by Ontario Hydro, and implemented new air quality initiatives to ensure that all Ontarians have early and improved access to air quality information. Ontario is also developing stringent emission caps, announced an expansion of mandatory emission reporting requirements to all industrial sectors, and introduced fines and long jail sentences for major environmental offences. In an effort to deal with transboundary environmental issues, Ontario recently intervened before US courts in support of the US Environmental Protection Agency's (EPA) efforts to cap emissions of nitrogen oxides from midwestern states. This action recognizes that smog and acid rain are regional issues that must be tackled through regional efforts, and draws attention to the fact that more than half of Ontario's smog comes from sources south of the border.

  10. Transboundary pollution and its effect on Ontario : fact sheet

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-08-24

    The Ontario Ministry of the Environment (MOE) has taken action to improve air quality in the province. Some measures include strict air emission limits and mandatory reporting requirements for the electric power generating sector. A freeze has been placed on the sale of all coal-fired generating plants pending environmental review. The Ontario Government pressured the Federal Government to reduce the sulphur content of gasoline and diesel fuel produced in Canada. This report stated that while it is recognized that half of Ontario's air pollution is caused by emissions from the U.S., the province considers smog and acid rain to be regional air issues that should be addressed using coordinated bilateral efforts. Ontario will commit to adopting the standards of the U.S. Environmental Protection Agency if these standards will cap emissions of nitrogen oxides. This report presented a summary of simple facts regarding emissions of sulphur dioxide, nitrogen oxides, acid rain, as well as nuclear and fossil fueled power generation. The MOE has created several environmental programs such as the Anti-Smog Action Plan, Drive Clean Program, Smog Patrol, Partners in Air Program and the Climate Change Fund. It has also taken other initiatives such as the implementation of emission performance standards for power generation, updating air quality standards and investing $4 million into an air monitoring network. The ministry has offered resource materials for smog alert and has updated Ontario's gasoline volatility regulation. 1 tab., 3 figs.

  11. Bathymetry and absorbitivity of Titan's Ontario Lacus

    Science.gov (United States)

    Hayes, A.G.; Wolf, A.S.; Aharonson, O.; Zebker, H.; Lorenz, R.; Kirk, R.L.; Paillou, P.; Lunine, J.; Wye, L.; Callahan, P.; Wall, S.; Elachi, C.

    2010-01-01

    Ontario Lacus is the largest and best characterized lake in Titan's south polar region. In June and July 2009, the Cassini RADAR acquired its first Synthetic Aperture Radar (SAR) images of the area. Together with closest approach altimetry acquired in December 2008, these observations provide a unique opportunity to study the lake's nearshore bathymetry and complex refractive properties. Average radar backscatter is observed to decrease exponentially with distance from the local shoreline. This behavior is consistent with attenuation through a deepening layer of liquid and, if local topography is known, can be used to derive absorptive dielectric properties. Accordingly, we estimate nearshore topography from a radar altimetry profile that intersects the shoreline on the East and West sides of the lake. We then analyze SAR backscatter in these regions to determine the imaginary component of the liquid's complex index of refraction (Kappa). The derived value, Kappa = (6.1-1.3+1.7) x 10-4, corresponds to a loss tangent of tan Delta = (9.2-2.0+2.5) x 10-4 and is consistent with a composition dominated by liquid hydrocarbons. This value can be used to test compositional models once the microwave optical properties of candidate materials have been measured. In areas that do not intersect altimetry profiles, relative slopes can be calculated assuming the index of refraction is constant throughout the liquid. Accordingly, we construct a coarse bathymetry map for the nearshore region by measuring bathymetric slopes for eleven additional areas around the lake. These slopes vary by a factor of ~5 and correlate well with observed shoreline morphologies.

  12. Huge court fight may be in offing as Ontario college considers penalty for maverick MD.

    Science.gov (United States)

    Gray, C

    1999-03-23

    Physicians who practise alternative medicine are paying close attention to the case of an Ontario physician who was found guilty of professional misconduct. The College of Physicians and Surgeons of Ontario says it is simply doing its job.

  13. Remote field Eddy Current Technique Development for Gap Measurement of Neighboring Tubes of Nuclear Fuel Channel in Pressurized Heavy Water Reactor

    Energy Technology Data Exchange (ETDEWEB)

    Jung, H. K.; Lee, D. H.; Lee, Y. S.; Huh, H.; Cheong, Y. M. [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

    2004-04-15

    Liquid Injection Nozzle(LIN) tube and Calandria tube(CT) in pressurized Heavy Water Reactor (PHWR) are cross-aligned horizontally. These neighboring tubes can contact each other due to the sag of the calandria tube resulting from the irradiation creep and thermal creep, and fuel load, etc. In order to judge the contact which might be the safety concern, the remote field eddy current (RFEC) technology is applied for the gap measurement in this paper. LIN can be detected by inserting the RFEC probe into pressure tube (PT) at the crossing point directly. To obtain the optimal conditions of the RFEC inspection, the sensitivity, penetration and noise signals are considered simultaneously. The optimal frequency and coil spacing are 1kHz and 200mm respectively. Possible noises during LIN signal acquisition are caused by lift-off, PT thickness variation, and gap variation between PT and CT. The simulated noise signals were investigated by the Volume Integral Method(VIM). Signal analysis on the voltage plane describes the amplitude and shape of LIN and possible defects at several frequencies. All the RFEC measurements in the laboratory were done in variance with the CT/LIN gap and showed the relationship between the LIN gap and the signal parameters by analyzing the voltage plane signals

  14. Neurotoxic behavioral effects of Lake Ontario salmon diets in rats

    Energy Technology Data Exchange (ETDEWEB)

    Hertzler, D.R. (State Univ. of New York, Oswego (USA))

    1990-03-01

    Six experiments were conducted to examine possible neurotoxic effects of the exposure to contaminants in Lake Ontario salmon administered through the diets of rats. Rats were fed different concentrations of fish (8%, 15% or 30%) in one of three diet conditions: Lake Ontario salmon, Pacific Ocean salmon, or laboratory rat chow only. Following 20 days on the diets, rats were tested for five minutes per day in a modified open field for one or three days. Lake Ontario salmon diets consistently produced significantly lower activity, rearing, and nosepoke behaviors in comparison with ocean salmon or rat chow diet conditions. A dose-response effect for concentration of lake salmon was obtained, and the attenuation effect occurred in males, females, adult or young animals, and postweaning females, with fish sampled over a five-year period. While only two of several potential contaminants were tested, both fish and brain analyses of mirex and PCBs relate to the behavioral effects.

  15. Standards for provision and accreditation of echocardiography in Ontario.

    Science.gov (United States)

    Sanfilippo, Anthony J; Chan, Kwan L; Hughes, William G; Kingsbury, Kori J; Leong-Poi, Howard; Sasson, Zion; Wald, Robert

    2013-03-01

    In March of 2010, the Ontario Ministry of Health and Long-term Care and Ontario Medical Association jointly commissioned a Working Group to make recommendations regarding the provision and accreditation of echocardiographic services in Ontario. That commission undertook a process to examine all aspects of the provision, reporting and interpretation of echocardiographic examinations, including the echocardiographic examination itself, facilities, equipment, reporting, indications, and qualifications of personnel involved in the acquisition and interpretation of studies. The result was development of a set of 54 performance standards and a process for accreditation of echocardiographic facilities, initially on a voluntary basis, but leading to a process of mandatory accreditation. This article, and its accompanying Supplemental Material, outline the mandate, process undertaken, standards developed, and accreditation process recommended.

  16. Parental perceptions of school-based influenza immunisation in Ontario, Canada: a qualitative study

    OpenAIRE

    MacDougall, Donna; Crowe, Lois; Jennifer A Pereira; Kwong, Jeffrey C.; Quach, Susan; Wormsbecker, Anne E; Ramsay, Hilary; Salvadori, Marina I; Russell, Margaret L; ,

    2014-01-01

    Objective To understand the perspectives of Ontario parents regarding the advantages and disadvantages of adding influenza immunisation to the currently existing Ontario school-based immunisation programmes. Design Descriptive qualitative study. Participants Parents of school-age children in Ontario, Canada, who were recruited using a variety of electronic strategies (social media, emails and media releases), and identified as eligible (Ontario resident, parent of one or more school-age child...

  17. The short-term impact of Ontario's generic pricing reforms.

    Directory of Open Access Journals (Sweden)

    Michael R Law

    Full Text Available BACKGROUND: Canadians pay amongst the highest generic drug prices in the world. In July 2010, the province of Ontario enacted a policy that halved reimbursement for generic drugs from the public drug plan, and substantially lowered prices for private purchases. We quantified the impact of this policy on overall generic drug expenditures in the province, and projected the impact in other provinces had they mimicked this pricing change. METHODS: We used quarterly prescription generic drug dispensing data from the IMS-Brogan CompuScript Audit. We used the price per unit in both the pre- and post-policy period and two economics price indexes to estimate the expenditure reduction in Ontario. Further, we used the post-policy Ontario prices to estimate the potential reduction in other provinces. RESULTS: We estimate that total expenditure on generic drugs in Ontario during the second half of 2010 was between $181 and $194 million below what would be expected if prices had remained at pre-policy level. Over half of the reduction in spending was due to savings on just 10 generic ingredients. If other provinces had matched Ontario's prices, their expenditures over during the latter half of 2010 would have been $445 million lower. DISCUSSION: We found that if Ontario's pricing scheme were adopted nationally, overall spending on generic drugs in Canada would drop at least $1.28 billion annually--a 5% decrease in total prescription drug expenditure. Other provinces should seriously consider both changes to their generic drug prices and the use of more competitive bulk purchasing policies.

  18. Future changes of temperature and heat waves in Ontario, Canada

    Science.gov (United States)

    Li, Zhong; Huang, Guohe; Huang, Wendy; Lin, Qianguo; Liao, Renfei; Fan, Yurui

    2017-05-01

    Apparent changes in the temperature patterns in recent years brought many challenges to the province of Ontario, Canada. As the need for adapting to climate change challenges increases, the development of reliable climate projections becomes a crucial task. In this study, a regional climate modeling system, Providing Regional Climates for Impacts Studies (PRECIS), is used to simulate the temperature patterns in Ontario. Three PRECIS runs with a resolution of 25 km × 25 km are carried out to simulate the present (1961-1990) temperature variations. There is a good match between the simulated and observed data, which validates the performance of PRECIS in reproducing temperature changes in Ontario. Future changes of daily maximum, mean, and minimum temperatures during the period 2071-2100 are then projected under the IPCC SRES A2 and B2 emission scenarios using PRECIS. Spatial variations of annual mean temperature, mean diurnal range, and temperature seasonality are generated. Furthermore, heat waves defined based on the exceedance of local climatology and their temporal and spatial characteristics are analyzed. The results indicate that the highest temperature and the most intensive heat waves are most likely to occur at the Toronto-Windsor corridor in Southern Ontario. The Northern Ontario, in spite of the relatively low projected temperature, would be under the risk of long-lasting heat waves, and thus needs effective measures to enhance its climate resilience in the future. This study can assist the decision makers in better understanding the future temperature changes in Ontario and provide decision support for mitigating heat-related loss.

  19. Proceedings of the 41. annual Ontario Petroleum Institute conference : Ontario - New York oil and gas conference

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-07-01

    A wide range of issues relevant to the petroleum industry in both Ontario and northern New York state were addressed with particular reference to the potential for hydrocarbon plays in the shale and carbonate rocks of the region. The 21 presentations and poster sessions discussed a variety of topics including the sedimentology and petrology of oil and natural gas reservoirs, with emphasis on their depositional histories and geological correlations. This included a review of sequence stratigraphy, source rocks, and hydrodynamics of hydrocarbon fluid flow in fractured reservoirs. Many of the papers reviewed exploration methods, market economics, and enhanced recovery techniques such as well stimulation and horizontal drilling. Several presentations also reviewed the recent advances that have been made in remote sensing techniques, ground truth measurement acquisition, and seismic surveys. Eight of the 21 presentations were processed separately for inclusion in the database. refs., tabs., figs.

  20. Exploring the Gap between Teacher Certification and Permanent Employment in Ontario: An Integrative Literature Review

    Science.gov (United States)

    Brock, Allison; Ryan, Thomas G.

    2016-01-01

    The following integrative literature review illuminates the perceptible time gap that currently exists for new Ontario teachers graduating and moving from teacher preparation programs to permanent members of the Ontario teaching community. At a time of oversupply of teachers, many new teachers within Ontario and beyond its borders become…

  1. The Price of Restraint. Brief to the Ontario Council on University Affairs.

    Science.gov (United States)

    Council of Ontario Universities, Toronto. Committee on Operating Grants.

    The Council of Ontario Universities' 1978 brief on operating support is presented. Section I compares funding recommendations for 1978-79 put forward by the Council on Ontario Universities (COU) and the Ontario Council on University Affairs (OCUS) with the provisions made for that year by the Minister of College and Universities (MCU). Section 2…

  2. The Financial Position of Universities in Ontario: 1986. Report 86-2.

    Science.gov (United States)

    Council of Ontario Universities, Toronto. Research Div.

    Data on the financial position of Ontario's universities are provided. Statistical tables and graphs cover: expenditures per client served, 1977-1985; percentage increase in provincial operating grants and total budgetary expenditures, 1977-1986; Ontario Universities' share of provincial budgetary expenditures; growth of Ontario Gross Domestic…

  3. Ascending and Descending into the System: A Comparison of Broadcasting Media Programs in Ontario Colleges

    Science.gov (United States)

    Sianos, Helen

    2015-01-01

    In 2013 the Ontario Ministry of Training, Colleges and Universities released Ontario's Differentiation Policy Framework for Postsecondary Education, for colleges and universities in the province. All 24 Ontario colleges responded to this Framework by presenting their Strategic Mandate Agreements (SMA). The Framework contrasts the original…

  4. 77 FR 30451 - Safety Zone; Olcott Fireworks, Lake Ontario, Olcott, NY

    Science.gov (United States)

    2012-05-23

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Olcott Fireworks, Lake Ontario, Olcott, NY... establish a temporary safety zone on Lake Ontario, Olcott, NY. This proposed rule is intended to restrict vessels from a portion of Lake Ontario during the Olcott fireworks display. The safety zone established...

  5. The Ontario Curriculum in the Arts and the Creative Economy Agenda

    Science.gov (United States)

    D'Andrea, Marisol

    2012-01-01

    The rhetoric of the creative economy agenda has influenced the revised Ontario curriculum in the arts for grades 9-12. Yet, increasing rhetorical and substantive support for a creative economy agenda in Ontario at large is not sufficiently reflected in the revised Ontario arts curriculum. The expanded agenda is not matched by expanded substantive…

  6. 77 FR 38492 - Safety Zone; Olcott Fireworks, Lake Ontario, Olcott, NY

    Science.gov (United States)

    2012-06-28

    ... SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Olcott Fireworks, Lake Ontario, Olcott, NY... temporary safety zone on Lake Ontario, Olcott, New York. This safety zone is intended to restrict vessels from a portion of Lake Ontario during the Olcott fireworks on July 3, 2012. The safety zone...

  7. Reactor Physics Programme

    Energy Technology Data Exchange (ETDEWEB)

    De Raedt, C

    2000-07-01

    The Reactor Physics and Department of SCK-CEN offers expertise in various areas of reactor physics, in particular in neutronics calculations, reactor dosimetry, reactor operation, reactor safety and control and non-destructive analysis on reactor fuel. This expertise is applied within the Reactor Physics and MYRRHA Research Department's own research projects in the VENUS critical facility, in the BR1 reactor and in the MYRRHA project (this project aims at designing a prototype Accelerator Driven System). Available expertise is also used in programmes external to the Department such as the reactor pressure steel vessel programme, the BR2 reactor dosimetry, and the preparation and interpretation of irradiation experiments. Progress and achievements in 1999 in the following areas are reported on: (1) investigations on the use of military plutonium in commercial power reactors; (2) neutron and gamma calculations performed for BR-2 and for other reactors; (3) the updating of neutron and gamma cross-section libraries; (4) the implementation of reactor codes; (6) the management of the UNIX workstations; and (6) fuel cycle studies.

  8. A study for the domestic application plan of the Generic Safety Issue(GSI) for the Pressurized Heavy Water Reactor

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Un Chul; Jang, Jin Wook; Lee, Sang Kyung; Lee, Doo Yong; Park, Chang Hwan [Seoul National Univ., Seoul (Korea, Republic of)

    2002-03-15

    In this study, a base work to construct the database of the domestic and foreign GSls were done through performing the deviation of GSls for the PHWR by investigating the development trend of international joint studies and the GSls of 4 countries as the PHWR state and examined the IAEA acceptance of GSls classification for the GSls of Canada, Korea Republic of, Argentina and India. We evaluated the possibility of application of the safety Issue for PHWR by investigating causes, contents and follow-up measures of each items. To evaluate the domestic application validity of the safety issue, We made the investigation matrix for the safety issue of each countries and also are reflecting new results in investigation matrix by examining IAEA PHWR GSI development trend. We intended to derive the GSls which are most appropriate in our PHWR by examining every issues. the derived GSls are divided into the design parts and the operation parts. And they have to be solved as soon as possible.

  9. Attrition reactor system

    Science.gov (United States)

    Scott, Charles D.; Davison, Brian H.

    1993-01-01

    A reactor vessel for reacting a solid particulate with a liquid reactant has a centrifugal pump in circulatory flow communication with the reactor vessel for providing particulate attrition, resulting in additional fresh surface where the reaction can occur.

  10. Omitted Costs, Inflated Benefits: Renewable Energy Policy in Ontario

    Science.gov (United States)

    Gallant, Parker; Fox, Glenn

    2011-01-01

    The government of Ontario has adopted wind energy development as an alternative energy source. It enacted the Green Energy and Economy Act, May 2009, with the intention to fast track the approval process regarding industrial wind turbines. The Act legislated a centralized decision making process while removing local jurisdictional authority.…

  11. Shared Geospatial Metadata Repository for Ontario University Libraries: Collaborative Approaches

    Science.gov (United States)

    Forward, Erin; Leahey, Amber; Trimble, Leanne

    2015-01-01

    Successfully providing access to special collections of digital geospatial data in academic libraries relies upon complete and accurate metadata. Creating and maintaining metadata using specialized standards is a formidable challenge for libraries. The Ontario Council of University Libraries' Scholars GeoPortal project, which created a shared…

  12. Constructing Bullying in Ontario, Canada: A Critical Policy Analysis

    Science.gov (United States)

    Winton, Sue; Tuters, Stephanie

    2015-01-01

    As the prevalence and negative effects of bullying become widely known, people around the world seem desperate to solve the bullying "problem". A sizeable body of research about many aspects of bullying and a plethora of anti-bullying programmes and policies now exist. This critical policy analysis asks: how does Ontario, Canada's…

  13. Ontario District Embraces an Evolving Approach to Learning

    Science.gov (United States)

    Belchetz, Denese; Witherow, Kathy

    2014-01-01

    The York Region District School Board is recognized as a high-performing district in Ontario, Canada, and has also garnered international attention. Visitors from across Canada, as well as Singapore, Finland, England, Scotland, Holland, the Bahamas, Korea, China, and Taiwan, have come to learn about its system and observe the teaching, learning,…

  14. Financial Literacy in Ontario: Neoliberalism, Pierre Bourdieu and the Citizen

    Science.gov (United States)

    Arthur, Chris

    2011-01-01

    Utilizing concepts from Pierre Bourdieu I argue that the implementation of financial literacy education in Ontario public schools will, if uncontested, support a neoliberal consumer habitus (subjectivity) at the expense of the critical citizen. This internalization of the neoliberal ethos assists state efforts to shift responsibility for…

  15. Prevalence of Problematic Video Gaming among Ontario Adolescents

    Science.gov (United States)

    Turner, Nigel E.; Paglia-Boak, Angela; Ballon, Bruce; Cheung, Joyce T. W.; Adlaf, Edward M.; Henderson, Joanna; Chan, Vincy; Rehm, Jurgen; Hamilton, Hayley; Mann, Robert E.

    2012-01-01

    Video game playing has become a very popular activity among adolescents. Its impact on the mental health and well-being of players is just beginning to be explored. This paper reports on the prevalence of problematic gaming in a representative sample of 2,832 Ontario students in grades 7 to 12. The survey included questions about the school grade,…

  16. Revisiting Constructivist Teaching Methods in Ontario Colleges Preparing for Accreditation

    Science.gov (United States)

    Schultz, Rachel A.

    2015-01-01

    At the time of writing, the first community colleges in Ontario were preparing for transition to an accreditation model from an audit system. This paper revisits constructivist literature, arguing that a more pragmatic definition of constructivism effectively blends positivist and interactionist philosophies to achieve both student centred…

  17. Tidy Minds, Untidy Solutions: University Organization in Ontario.

    Science.gov (United States)

    Smith, J. Percy

    1984-01-01

    The Ontario Council of University Affairs was established to counsel the provincial government concerning higher education and to act as a buffer between institutions and government. However, with no statutory authority, its advice has been largely ignored or rejected. A 1983 commission to rectify the situation has not succeeded. (MSE)

  18. Administrators' Views on Teacher Evaluation: Examining Ontario's Teacher Performance Appraisal

    Science.gov (United States)

    Maharaj, Sachin

    2014-01-01

    This study examines the views of administrators (i.e., principals and vice-principals) in Ontario, Canada, with regard to the province's Teacher Performance Appraisal process. A total of 178 responses were collected from a survey that examined five areas: 1) preparation and training; 2) classroom observations; 3) preparing the formal evaluation;…

  19. Implications of Key Performance Indicator Issues in Ontario Universities Explored

    Science.gov (United States)

    Chan, Vivian

    2015-01-01

    Since 1998, the Ministry of Training, Colleges and Universities in Ontario, Canada, has required that data on specific key performance indicators (KPIs) be made public by its publicly funded universities. The information is intended to be used by universities to demonstrate their achievements, to improve their programmes and services, and to…

  20. Constructing Bullying in Ontario, Canada: A Critical Policy Analysis

    Science.gov (United States)

    Winton, Sue; Tuters, Stephanie

    2015-01-01

    As the prevalence and negative effects of bullying become widely known, people around the world seem desperate to solve the bullying "problem". A sizeable body of research about many aspects of bullying and a plethora of anti-bullying programmes and policies now exist. This critical policy analysis asks: how does Ontario, Canada's…

  1. Institutional Diversity in Ontario's University Sector: A Policy Debate Analysis

    Science.gov (United States)

    Piché, Pierre G.; Jones, Glen A.

    2016-01-01

    In order to meet the demands in a cost-effective manner of an emerging knowledge society that is global in scope, structural higher education policy changes have been introduced in many countries with a focus on systemic and programmatic diversity. There has been an ongoing debate about institutional diversity in Ontario higher education,…

  2. Omitted Costs, Inflated Benefits: Renewable Energy Policy in Ontario

    Science.gov (United States)

    Gallant, Parker; Fox, Glenn

    2011-01-01

    The government of Ontario has adopted wind energy development as an alternative energy source. It enacted the Green Energy and Economy Act, May 2009, with the intention to fast track the approval process regarding industrial wind turbines. The Act legislated a centralized decision making process while removing local jurisdictional authority.…

  3. Provoking Dialogue: A Short History of Outdoor Education in Ontario

    Science.gov (United States)

    Borland, James

    2011-01-01

    History helps educators more clearly describe the role of outdoor education in improving society by fostering awareness of human-nature interconnections. Five branches have shaped outdoor education in Ontario: (1) agricultural education; (2) environmental education; (3) outdoor adventure education; (4) ecological education; and (5) climate change…

  4. How Ontario Spread Successful Practices across 5,000 Schools

    Science.gov (United States)

    Glaze, Avis

    2013-01-01

    Ontario embraced a provincial lead improvement plan that was designed to improve its 5,000 schools by focusing on literacy and numeracy, improving high school graduation, and improving public support for education. Its primary strategy was developing networks of educators and building their capacity for growth.

  5. Lake Ontario: Nearshore Conditions and Variability in Water Quality Parameters

    Science.gov (United States)

    Interest in recent years has increased regarding conditions in the nearshore of the Great Lakes. We conducted a high-resolution survey of the Lake Ontario nearshore along the 20 m contour using towed electronic instrumentation. The 720 km survey was conducted September 6-10, 20...

  6. Constructing Bullying in Ontario, Canada: A Critical Policy Analysis

    Science.gov (United States)

    Winton, Sue; Tuters, Stephanie

    2015-01-01

    As the prevalence and negative effects of bullying become widely known, people around the world seem desperate to solve the bullying "problem". A sizeable body of research about many aspects of bullying and a plethora of anti-bullying programmes and policies now exist. This critical policy analysis asks: how does Ontario, Canada's…

  7. Financial Literacy in Ontario: Neoliberalism, Pierre Bourdieu and the Citizen

    Science.gov (United States)

    Arthur, Chris

    2011-01-01

    Utilizing concepts from Pierre Bourdieu I argue that the implementation of financial literacy education in Ontario public schools will, if uncontested, support a neoliberal consumer habitus (subjectivity) at the expense of the critical citizen. This internalization of the neoliberal ethos assists state efforts to shift responsibility for…

  8. LMFBR type reactor

    Energy Technology Data Exchange (ETDEWEB)

    Kawakami, Hiroto

    1995-02-07

    A reactor container of the present invention has a structure that the reactor container is entirely at the same temperature as that at the inlet of the reactor and, a hot pool is incorporated therein, and the reactor container has is entirely at the same temperature and has substantially uniform temperature follow-up property transiently. Namely, if the temperature at the inlet of the reactor core changes, the temperature of the entire reactor container changes following this change, but no great temperature gradient is caused in the axial direction and no great heat stresses due to axial temperature distribution is caused. Occurrence of thermal stresses caused by the axial temperature distribution can be suppressed to improve the reliability of the reactor container. In addition, since the laying of the reactor inlet pipelines over the inside of the reactor is eliminated, the reactor container is made compact and the heat shielding structures above the reactor and a protection structure of container walls are simplified. Further, secondary coolants are filled to the outside of the reactor container to simplify the shieldings. The combined effects described above can improve economical property and reliability. (N.H.).

  9. Reliable positioning in a sparse GPS network, eastern Ontario

    Science.gov (United States)

    Samadi Alinia, H.; Tiampo, K.; Atkinson, G. M.

    2013-12-01

    Canada hosts two regions that are prone to large earthquakes: western British Columbia, and the St. Lawrence River region in eastern Canada. Although eastern Ontario is not as seismically active as other areas of eastern Canada, such as the Charlevoix/Ottawa Valley seismic zone, it experiences ongoing moderate seismicity. In historic times, potentially damaging events have occurred in New York State (Attica, 1929, M=5.7; Plattsburg, 2002, M=5.0), north-central Ontario (Temiskaming, 1935, M=6.2; North Bay, 2000, M=5.0), eastern Ontario (Cornwall, 1944, M=5.8), Georgian Bay (2005, MN=4.3), and western Quebec (Val-Des-Bois,2010, M=5.0, MN=5.8). In eastern Canada, the analysis of detailed, high-precision measurements of surface deformation is a key component in our efforts to better characterize the associated seismic hazard. The data from precise, continuous GPS stations is necessary to adequately characterize surface velocities from which patterns and rates of stress accumulation on faults can be estimated (Mazzotti and Adams, 2005; Mazzotti et al., 2005). Monitoring of these displacements requires employing high accuracy GPS positioning techniques. Detailed strain measurements can determine whether the regional strain everywhere is commensurate with a large event occurring every few hundred years anywhere within this general area or whether large earthquakes are limited to specific areas (Adams and Halchuck, 2003; Mazzotti and Adams, 2005). In many parts of southeastern Ontario and western Québec, GPS stations are distributed quite sparsely, with spacings of approximately 100 km or more. The challenge is to provide accurate solutions for these sparse networks with an approach that is capable of achieving high-accuracy positioning. Here, various reduction techniques are applied to a sparse network installed with the Southern Ontario Seismic Network in eastern Ontario. Recent developments include the implementation of precise point positioning processing on acquired

  10. A population on the rise: The origin of deepwater sculpin in Lake Ontario

    Science.gov (United States)

    Welsh, Amy B.; Scribner, Kim T.; Stott, Wendylee; Walsh, Maureen

    2017-01-01

    Deepwater sculpin, Myoxocephalus thompsonii, were thought to have been extirpated from Lake Ontario. However, in recent years, abundance has increased and recruitment has been documented. There are two hypotheses concerning the origin of the current Lake Ontario deepwater sculpin population. First, individuals from the upper Great Lakes may have recolonized Lake Ontario. Alternatively, the Lake Ontario population may have not been extirpated, and the remnant population has recovered naturally. To test these hypotheses, eight microsatellite loci were used to analyze samples from the current Lake Ontario population, museum specimens from the historic Lake Ontario population, and current upper Great Lakes populations. The genetic data suggest that historically throughout the Great Lakes, deepwater sculpin exhibited low levels of spatial genetic structure. Approximate Bayesian Computation analyses support the hypothesis that the current Lake Ontario population is more closely related to populations in the upper Great Lakes than to the historic Lake Ontario samples, indicating that the current Lake Ontario population likely resulted from recolonization from the Upper Great Lakes. The current Lake Ontario population has reduced allelic diversity relative to upper Great Lakes populations, indicating a possible founder effect. This study demonstrates the role life history variation can play in recolonization success. The pelagic larval phase of the deepwater sculpin allowed recolonization of Lake Ontario via passive larval drift.

  11. Clinical guidelines and the fate of medical autonomy in Ontario.

    Science.gov (United States)

    Rappolt, S G

    1997-04-01

    Conceptually, clinical guidelines and professional autonomy have a paradoxical relationship. Despite being the quintessence of medical knowledge at the corporate level, guidelines diminish the clinical autonomy of individual practitioners, and therefore threaten medicine's justification for its autonomy. Theorists have argued that professional autonomy will be retained through elite dominance of practitioners, while comparative research suggests that economic autonomy can be traded off to retain clinical autonomy. Under government pressure to regulate the growth of Ontario physicians' fee-for-service public expenditure, the profession's representative organization, the Ontario Medical Association (OMA), promoted voluntary clinical guidelines, hoping to both constrain costs and preserve professional control over the content of medical care. The OMA collaborated with the Ministry of Health in developing guidelines and establishing a provincial centre for health service research. Ontario's practitioners disregarded the OMA's exhortations to implement clinical guidelines, suggesting that in the absence of external constraints, practitioners can subvert elite dominance. However, practitioners' unchecked clinical and economic autonomy, combined with evidence of wide provincial variations in medical care, served to legitimize the government's increasingly unilateral control over the schedule of insured medical services, and, in 1993, their imposition of a global cap on physicians' fee-for-service income pool. When analysed in the context of ongoing Ministry-OMA relations, the failure of the OMA's guidelines strategy to constrain medical service costs has expedited an overall decline in medical autonomy in Ontario. The emergence and course of Ontario's clinical guidelines movement is consistent with the view that medical autonomy is contingent upon broad class forces, and the conceptualization of professional organizations as instruments for mediated occupational control.

  12. Light water reactor safety

    CERN Document Server

    Pershagen, B

    2013-01-01

    This book describes the principles and practices of reactor safety as applied to the design, regulation and operation of light water reactors, combining a historical approach with an up-to-date account of the safety, technology and operating experience of both pressurized water reactors and boiling water reactors. The introductory chapters set out the basic facts upon which the safety of light water reactors depend. The central section is devoted to the methods and results of safety analysis. The accidents at Three Mile Island and Chernobyl are reviewed and their implications for light wate

  13. Nuclear reactor physics

    CERN Document Server

    Stacey, Weston M

    2010-01-01

    Nuclear reactor physics is the core discipline of nuclear engineering. Nuclear reactors now account for a significant portion of the electrical power generated worldwide, and new power reactors with improved fuel cycles are being developed. At the same time, the past few decades have seen an ever-increasing number of industrial, medical, military, and research applications for nuclear reactors. The second edition of this successful comprehensive textbook and reference on basic and advanced nuclear reactor physics has been completely updated, revised and enlarged to include the latest developme

  14. Spinning fluids reactor

    Science.gov (United States)

    Miller, Jan D; Hupka, Jan; Aranowski, Robert

    2012-11-20

    A spinning fluids reactor, includes a reactor body (24) having a circular cross-section and a fluid contactor screen (26) within the reactor body (24). The fluid contactor screen (26) having a plurality of apertures and a circular cross-section concentric with the reactor body (24) for a length thus forming an inner volume (28) bound by the fluid contactor screen (26) and an outer volume (30) bound by the reactor body (24) and the fluid contactor screen (26). A primary inlet (20) can be operatively connected to the reactor body (24) and can be configured to produce flow-through first spinning flow of a first fluid within the inner volume (28). A secondary inlet (22) can similarly be operatively connected to the reactor body (24) and can be configured to produce a second flow of a second fluid within the outer volume (30) which is optionally spinning.

  15. Reactor Vessel Surveillance Program for Advanced Reactor

    Energy Technology Data Exchange (ETDEWEB)

    Jeong, Kyeong-Hoon; Kim, Tae-Wan; Lee, Gyu-Mahn; Kim, Jong-Wook; Park, Keun-Bae; Kim, Keung-Koo

    2008-10-15

    This report provides the design requirements of an integral type reactor vessel surveillance program for an integral type reactor in accordance with the requirements of Korean MEST (Ministry of Education, Science and Technology Development) Notice 2008-18. This report covers the requirements for the design of surveillance capsule assemblies including their test specimens, test block materials, handling tools, and monitors of the surveillance capsule neutron fluence and temperature. In addition, this report provides design requirements for the program for irradiation surveillance of reactor vessel materials, a layout of specimens and monitors in the surveillance capsule, procedures of installation and retrieval of the surveillance capsule assemblies, and the layout of the surveillance capsule assemblies in the reactor.

  16. Plutonium Consumption Program, CANDU Reactor Project final report

    Energy Technology Data Exchange (ETDEWEB)

    1994-07-31

    DOE is investigating methods for long term dispositioning of weapons grade plutonium. One such method would be to utilize the plutonium in Mixed OXide (MOX) fuel assemblies in existing CANDU reactors. CANDU (Canadian Deuterium Uranium) reactors are designed, licensed, built, and supported by Atomic Energy of Canada Limited (AECL), and currently use natural uranium oxide as fuel. The MOX spent fuel assemblies removed from the reactor would be similar to the spent fuel currently produced using natural uranium fuel, thus rendering the plutonium as unattractive as that in the stockpiles of commercial spent fuel. This report presents the results of a study sponsored by the DOE for dispositioning the plutonium using CANDU technology. Ontario Hydro`s Bruce A was used as reference. The fuel design study defined the optimum parameters to disposition 50 tons of Pu in 25 years (or 100 tons). Two alternate fuel designs were studied. Safeguards, security, environment, safety, health, economics, etc. were considered. Options for complete destruction of the Pu were also studied briefly; CANDU has a superior ability for this. Alternative deployment options were explored and the potential impact on Pu dispositioning in the former Soviet Union was studied. An integrated system can be ready to begin Pu consumption in 4 years, with no changes required to the reactors other than for safe, secure storage of new fuel.

  17. Mortality incidence in outpatient anesthesia for dentistry in Ontario.

    Science.gov (United States)

    Nkansah, P J; Haas, D A; Saso, M A

    1997-06-01

    Studies determining anesthesia mortality rates in dentistry have been published, yet a similar investigation has never been conducted in Canada. Therefore the objective of this study was to determine the incidence of mortality when general anesthesia or deep sedation was administered by qualified dentists in the province of Ontario. Mortality data were obtained from the years 1973 to 1995 inclusive. The number of general anesthetics and deep sedations administered annually by qualified in dental offices was calculated by surveying all oral and maxillofacial surgeons and dental anesthetists in Ontario in 1990 and 1995. The results provided an estimate of 2,830,000 cases from 1973 to 1995 inclusive. Over this time period there were four deaths associated with cases in which either an oral and maxillofacial surgeon or dental anesthetist administered the general anesthetic or deep sedation, yielding a mortality rate of 1.4 per 1,000,000. This mortality incidence is similar to rates already published for outpatient dentistry.

  18. Ontario's Poverty Reduction Strategy: A Critical Discourse Analysis.

    Science.gov (United States)

    Benbow, Sarah; Gorlick, Carolyne; Forchuk, Cheryl; Ward-Griffin, Catherine; Berman, Helene

    2016-01-01

    This article overviews the second phase of a two-phase study which examined experiences of health and social exclusion among mothers experiencing homelessness in Ontario, Canada. A critical discourse analysis was employed to analyze the policy document, Realizing Our Potential: Ontario's Poverty Reduction Strategy, 2014-2019. In nursing, analysis of policy is an emerging form of scholarship, one that draws attention to the macro levels influencing health and health promotion, such as the social determinants of health, and the policies that impact them. The clear neo-liberal underpinnings, within the strategy, with a focus on productivity and labor market participation leave little room for an understanding of poverty reduction from a human rights perspective. Further, gender-neutrality rendered the poverty experienced by women, and mothers, invisible. Notably, there were a lack of deadlines, target dates, and thorough action and evaluation plans. Such absence troubles whether poverty reduction is truly a priority for the government, and society as a whole.

  19. SNTP program reactor design

    Science.gov (United States)

    Walton, Lewis A.; Sapyta, Joseph J.

    1993-06-01

    The Space Nuclear Thermal Propulsion (SNTP) program is evaluating the feasibility of a particle bed reactor for a high-performance nuclear thermal rocket engine. Reactors operating between 500 MW and 2,000 MW will produce engine thrusts ranging from 20,000 pounds to 80,000 pounds. The optimum reactor arrangement depends on the power level desired and the intended application. The key components of the reactor have been developed and are being tested. Flow-to-power matching considerations dominate the thermal-hydraulic design of the reactor. Optimal propellant management during decay heat cooling requires a three-pronged approach. Adequate computational methods exist to perform the neutronics analysis of the reactor core. These methods have been benchmarked to critical experiment data.

  20. Hybrid reactors. [Fuel cycle

    Energy Technology Data Exchange (ETDEWEB)

    Moir, R.W.

    1980-09-09

    The rationale for hybrid fusion-fission reactors is the production of fissile fuel for fission reactors. A new class of reactor, the fission-suppressed hybrid promises unusually good safety features as well as the ability to support 25 light-water reactors of the same nuclear power rating, or even more high-conversion-ratio reactors such as the heavy-water type. One 4000-MW nuclear hybrid can produce 7200 kg of /sup 233/U per year. To obtain good economics, injector efficiency times plasma gain (eta/sub i/Q) should be greater than 2, the wall load should be greater than 1 MW.m/sup -2/, and the hybrid should cost less than 6 times the cost of a light-water reactor. Introduction rates for the fission-suppressed hybrid are usually rapid.

  1. Fast Spectrum Reactors

    CERN Document Server

    Todd, Donald; Tsvetkov, Pavel

    2012-01-01

    Fast Spectrum Reactors presents a detailed overview of world-wide technology contributing to the development of fast spectrum reactors. With a unique focus on the capabilities of fast spectrum reactors to address nuclear waste transmutation issues, in addition to the well-known capabilities of breeding new fuel, this volume describes how fast spectrum reactors contribute to the wide application of nuclear power systems to serve the global nuclear renaissance while minimizing nuclear proliferation concerns. Readers will find an introduction to the sustainable development of nuclear energy and the role of fast reactors, in addition to an economic analysis of nuclear reactors. A section devoted to neutronics offers the current trends in nuclear design, such as performance parameters and the optimization of advanced power systems. The latest findings on fuel management, partitioning and transmutation include the physics, efficiency and strategies of transmutation, homogeneous and heterogeneous recycling, in addit...

  2. Wastewater quality control at Sarnia (Ontario, Canada) petrochemical industries

    Energy Technology Data Exchange (ETDEWEB)

    Vianna, Arlinda C. [Servico Nacional de Aprendizagem Industrial (SENAI), Salvador, BA (Brazil); Souza, Eliane S.; Himmelman, William [Lambton College, Sarnia, ON (Canada)

    1993-12-31

    Ontario industries are required by law to meet strict regulations under the provinces under MISA initiative (Municipal-Industrial Strategy for Abatement). The petroleum-petrochemical area was selected as a leader in the development of new environmental objectives, and monitoring and training programs. Sarnia has become a world leader in industrial environmental control systems and the approach toward zero emissions. 4 refs., 6 figs., 2 tabs.

  3. Adaptation to climate change in the Ontario public health sector

    Directory of Open Access Journals (Sweden)

    Paterson Jaclyn A

    2012-06-01

    Full Text Available Abstract Background Climate change is among the major challenges for health this century, and adaptation to manage adverse health outcomes will be unavoidable. The risks in Ontario – Canada’s most populous province – include increasing temperatures, more frequent and intense extreme weather events, and alterations to precipitation regimes. Socio-economic-demographic patterns could magnify the implications climate change has for Ontario, including the presence of rapidly growing vulnerable populations, exacerbation of warming trends by heat-islands in large urban areas, and connectedness to global transportation networks. This study examines climate change adaptation in the public health sector in Ontario using information from interviews with government officials. Methods Fifty-three semi-structured interviews were conducted, four with provincial and federal health officials and 49 with actors in public health and health relevant sectors at the municipal level. We identify adaptation efforts, barriers and opportunities for current and future intervention. Results Results indicate recognition that climate change will affect the health of Ontarians. Health officials are concerned about how a changing climate could exacerbate existing health issues or create new health burdens, specifically extreme heat (71%, severe weather (68% and poor air-quality (57%. Adaptation is currently taking the form of mainstreaming climate change into existing public health programs. While adaptive progress has relied on local leadership, federal support, political will, and inter-agency efforts, a lack of resources constrains the sustainability of long-term adaptation programs and the acquisition of data necessary to support effective policies. Conclusions This study provides a snapshot of climate change adaptation and needs in the public health sector in Ontario. Public health departments will need to capitalize on opportunities to integrate climate change into

  4. /sup 137/Cs radioactive dating of Lake Ontario sediment cores

    Energy Technology Data Exchange (ETDEWEB)

    Ward, T.E.; Breeden, J.; Komisarcik, K.; Porter, R.; Czuczwa, J.; Kaminski, R.; McVeety, B.D.

    1987-12-01

    The distribution of /sup 137/Cs in sediment cores from Lake Ontario provides estimates of the sediment accumulation rates. Geochronology with /sup 210/Pb dating and distribution of Ambrosia (ragweed) pollen compare well with /sup 137/Cs dating. These methods can determine with precision, changes in sedimentation occurring over the past 100 years or so. Typical sedimentation rates of 0.18-0.36 cm/yr were measured. 16 refs., 3 figs., 2 tabs.

  5. Helicobacter pylori Infection in Ontario: Prevalence and Risk Factors

    Directory of Open Access Journals (Sweden)

    Farah Naja

    2007-01-01

    Full Text Available BACKGROUND: Helicobacter pylori has been classified by the World Health Organization as a type I carcinogen. Nearly 50% of the world’s population is estimated to be infected with H pylori. Prevalence patterns of the infection are different between developing and developed countries. The present study had two objectives – to estimate the prevalence of H pylori infection in Ontario, and to evaluate the relationship between the infection and various demographic characteristics and selected lifestyle factors.

  6. Postexposure Treatment and Animal Rabies, Ontario, 1958-2000

    Science.gov (United States)

    Nunan, Christopher P.; Honig, Janet M.; Ball, David G. A.; Hauschildt, Peggy; LeBer, Charles A.

    2002-01-01

    This paper investigates the relationship between animal rabies and postexposure treatment (PET) in Ontario by examining the introduction of human diploid cell vaccine (HDCV) in 1980 and the initiation of an oral rabies vaccination program for wildlife in 1989. Introducing HDCV led to an immediate doubling of treatments. Both animal rabies and human treatments declined rapidly after the vaccination program was introduced, but human treatments have leveled off at approximately 1,000 per year. PMID:11897079

  7. Ontario courts reaffirm right to marijuana for therapeutic purposes.

    Science.gov (United States)

    Weiss, Rémi

    2011-10-01

    In a judgment dated 11 April 20 11, the Ontario Superior Court declared that the Medical Marijuana Access Regulations (MMAR), and Sections 4 and 7 of the Controlled Drugs and Substances Act (CDSA), that prohibit the possession and production of cannabis, are unconstitutional because, in practice, they prevent effective access to marijuana for therapeutic purposes, and therefore violate Section 7 of the Canadian Charter of Rights and Freedoms (Charter).

  8. The Ecological History of Lake Ontario According to Phytoplankton

    Science.gov (United States)

    Allinger, L. E.; Reavie, E. D.

    2014-12-01

    Lake Ontario's water quality has fluctuated since European settlement and our understanding of the cause-and-effect linkages between observed ecosystem shifts and stressors are evolving and improving. Changes in the physical and chemical environment of the lake due to non-indigenous species, pollution, sedimentation, turbidity and climate change altered the pelagic primary producers, so algal assessments have been valuable for tracking long-term conditions. We present a chronological account of pelagic algal assessments and some nearshore areas to summarize past and present environmental conditions in Lake Ontario. This review particularly focuses on diatom-based assessments as their fossils in sediments have revealed the combined effects of environmental insults and recovery. This review recaps the long-term trends according to three unique regions: Hamilton Harbor, the main lake basin and the Bay of Quinte. We summarize pre-European settlement, eutrophication throughout most of the 20th century, subsequent water quality improvement due to nutrient reductions and filter-feeding dreissenid colonization and contemporary pelagic, shoreline and embayment impairments. Recent pelagic phytoplankton data suggest that although phytoplankton biovolume remains stable, species composition has shifted to an increase in spring eutrophic diatoms and summer blue-green algae. Continued monitoring and evaluation of historical data will assist in understanding and responding to the natural and anthropogenic drivers of Lake Ontario's environmental conditions. As such we have initiated a new paleolimnological investigation, supported by the Environmental Protection Agency-Great Lakes National Program Office, to reconstruct the long-term environmental history of Lake Ontario and will present preliminary results.

  9. The organization of district health councils in Ontario

    OpenAIRE

    Dixon, F Maureen

    1982-01-01

    This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University. This action research project with district health councils (DHCs) in Ontario, Canada, took place between 1976 and 1980. The purpose of the research was to identify the most effective forms of organization for DHCs, bodies set up to provide a local focus for planning and coordination of health services in the Province. The research method was based on social analysis, a method developed ove...

  10. Photonics education and training in Ontario, Canada: an integrated plan

    Science.gov (United States)

    Nantel, Marc; Beda, Johann

    2002-05-01

    Canada has established itself as a leader in photonics. Ontario in particular - home of giants such as JDS Uniphase, Nortel Networks, GSI Lumonics and an increasing number of successful start-up companies - has seen the demand for highly-qualified personnel in photonics grow exponentially in the past few years. The scarcity of these photonics experts has become - recent market woes not withstanding - the single most important impediment to the further growth of photonics companies. Nonetheless, it is mostly at the graduate school level that lasers and photonics are introduced to students, with only very few thus being trained in the field. Photonics Research Ontario has put together an aggressive plan to change this situation and present Optics, Lasers and Photonics at all levels in the education system, from grade school to graduate school. This paper will present this Photonics Education and Training plan, as well as other efforts being undertaken across Canada to address this crucial issue. The paper will focus especially on the training of Photonics Technicians and Technologists in Ontario's Community Colleges. The new curriculum designed for these programs will be presented, and the importance of industry support will be emphasized.

  11. Alberta's and Ontario's liquor boards: why such divergent outcomes?

    Science.gov (United States)

    Bird, Malcolm G

    2010-01-01

    The provinces of Alberta and Ontario have chosen very different methods to distribute alcoholic beverages: Alberta privatized the Alberta Liquor Control Board (ALCB) in 1993 and established a private market to sell beverage alcohol, while Ontario, in stark contrast, opted to retain and expand the Liquor Control Board of Ontario (LCBO). This article examines the reasons for the divergent policy choices made by Ralph Klein and Mike Harris' Conservative governments in each province. The article draws on John Kingdon's “multiple streams decision-making model,” to examine the mindsets of the key decision-makers, as well as “historical institutionalism,” to organize the pertinent structural, historical and institutional variables that shaped the milieu in which decision-makers acted. Unique, province-specific political cultures, histories, institutional configurations (including the relative influence of a number of powerful actors), as well as the fact that the two liquor control boards were on opposing trajectories towards their ultimate fates, help to explain the different decisions made by each government. Endogenous preference construction in this sector, furthermore, implies that each system is able to satisfy all relevant stakeholders, including consumers.

  12. Traffic pollution and health : international and Ontario experiences

    Energy Technology Data Exchange (ETDEWEB)

    Finkelstein, M.M. [McMaster Univ., Hamilton, ON (Canada). McMaster Inst. of Environment and Health]|[McMaster Univ., Hamilton, ON (Canada). Dept. of Family Medecine]|[Toronto Univ., ON (Canada). Dept. of Family Medecine]|[Toronto Univ., (Canada). Dept. of Public Health Sciences

    2006-07-01

    International and Ontario experience related to traffic pollution and health were discussed. The presentation opened with a table about deaths per day resulting from sulphur dioxide and smoke micrograms per cubic metre. It discussed the constituents of air pollution focusing on gas and particulates as well as atmospheric chemistry and indoor air pollution sources. Outdoor sources of air pollutants include naturally occurring pollutants such as volcanic eruptions, dust storms, vegetation emissions, and fires as well as human generated sources such as stationary and mobile sources and diesel engine pollution. Each type of pollutant was discussed in detail. Air pollution and human health was then presented in the context of traffic pollution and children, major epidemiologic studies of the health effects of pollutants, pollution and mortality in Vancouver, as well as other studies of a similar nature. The Hamilton/Toronto cohort study was one study that was highlighted in particular. The study concluded that living close to traffic in Hamilton and Toronto is associated with increased risk of circulatory disease hospital admissions and mortality. The presentation concluded with a discussion of air pollution and health in Ontario and recommendations made by the Ontario Medical Association. tabs., figs.

  13. Salmonella in raccoons (Procyon lotor) in southern Ontario, Canada.

    Science.gov (United States)

    Jardine, Claire; Reid-Smith, Richard J; Janecko, Nicol; Allan, Mike; McEwen, Scott A

    2011-04-01

    Numerous serotypes of Salmonella have been detected in a variety of wild animals, including raccoons (Procyon lotor). Raccoons are common, mid-size omnivores that live in close association with people in urban and rural areas in Ontario. Although raccoons are known to shed Salmonella, little is known about their potential long-term role in maintaining Salmonella infections. We sampled feces from raccoons in three areas of Ontario: one primarily urban site around Niagara, one primarily rural site north of Guelph, and the grounds of the Toronto Zoo, in 2007 to identify which serotypes of Salmonella were commonly shed by raccoons in southern Ontario. In addition, we conducted a longitudinal study at the Toronto Zoo site to determine if raccoons remain persistently infected with Salmonella. Salmonella was found in 45% of samples. The prevalence of Salmonella in raccoon feces ranged from 27% at the rural site to 65% at the urban site. We detected 16 serotypes of Salmonella in 83 positive samples. The most common serotype detected in raccoons from the rural and zoo sites was Salmonella enterica serotype Typhimurium, whereas Salmonella Newport was detected most commonly in the urban site. Only one raccoon of 11 that were captured in four or more consecutive trapping sessions shed the same Salmonella serotype for two consecutive months, suggesting that raccoons regularly acquire new Salmonella serotypes from the environment.

  14. The potential for green power marketing in Ontario

    Energy Technology Data Exchange (ETDEWEB)

    Kelly, B. [EcoPathways Consulting Inc., Whitby, ON (Canada)

    1997-12-31

    A review of Ontario Hydro`s green power program was provided. Market research indicates that the public is interested in renewable energy, that a significant portion of the public claim to be `green` consumers, and that they are willing to pay a premium for green power. There is, however, very little actual experiential evidence to show who is truly willing to pay and what price would be acceptable. Sources of `green electricity` include renewables such as hydro, solar, wind, biomass from farm and forest waste, methane from landfills, and geothermal. Public support in Ontario, and in most other parts of Canada, is strong for investment by power utilities in `green electricity`. In a limited program, Ontario Hydro is currently offering greenpower pricing for some of its proposed green power projects. To those willing to pay, a premium of 4 cents per kWh will be added to the current costs from the electricity retailer. The general impression of industry experts is that the demand for green power is there, however, the supply is not. Continued delays and uncertainty about the power industry`s future structure are considered to be the major impediments to implementing the green program. 1 tab., 7 figs.

  15. The geographic distribution of tuberculosis and pyridoxine supply in Ontario.

    Science.gov (United States)

    McGuigan, M A; Yamada, J

    1995-12-01

    Acute poisoning with isoniazid causes generalized convulsions which should be treated with intravenous pyridoxine and a rapidly-acting anticonvulsant. The purpose of this study was to determine the correlation between the distribution of tuberculosis (as a proxy for isoniazid use) and acute care hospital supplies of intravenous pyridoxine (the antidote for isoniazid overdose). The distribution of tuberculosis was based on Ontario public health regions. The study was descriptive using simple linear regression to assess the degree of correlation. Only 15.6% of Ontario acute care hospitals have enough intravenous pyridoxine to treat an average isoniazid overdose. The distribution of tuberculosis and the number of hospitals in the region correlated best with hospital supplies of pyridoxine, although these variables explained only 22% and 23.7%, respectively, of the variation in supply. It does not appear that the distribution of tuberculosis is a major determinant of the availability of the isoniazid antidote, pyridoxine. Acute care hospitals in Ontario should re-evaluate their need for pyridoxine in light of the incidence of tuberculosis in their regions. Each hospital should stock at least 5 Gm of intravenous pyridoxine; additional amounts may be appropriate if there is an increased incidence in the area.

  16. LMFBR type reactor

    Energy Technology Data Exchange (ETDEWEB)

    Kanbe, Mitsuru

    1997-04-04

    An LMFBR type reactor comprises a plurality of reactor cores in a reactor container. Namely, a plurality of pot containing vessels are disposed in the reactor vessel and a plurality of reactor cores are formed in a state where an integrated-type fuel assembly is each inserted to a pot, and a coolant pipeline is connected to each of the pot containing-vessel to cool the reactor core respectively. When fuels are exchanged, the integrated-type fuel assembly is taken out together with the pot from the reactor vessel in a state where the integrated-type fuel assembly is immersed in the coolants in the pot as it is. Accordingly, coolants are supplied to each of the pot containing-vessel connected with the coolant pipeline and circulate while cooling the integrated-type fuel assembly for every pot. Then, when the fuels are exchanged, the integrated type fuel assembly is taken out to the outside of the reactor together with the pot by taking up the pot from the pot-containing vessel. Then, neutron economy is improved to thereby improve reactor power and the breeding ratio. (N.H.)

  17. INVAP's Research Reactor Designs

    Directory of Open Access Journals (Sweden)

    Eduardo Villarino

    2011-01-01

    Full Text Available INVAP, an Argentine company founded more than three decades ago, is today recognized as one of the leaders within the research reactor industry. INVAP has participated in several projects covering a wide range of facilities, designed in accordance with the requirements of our different clients. For complying with these requirements, INVAP developed special skills and capabilities to deal with different fuel assemblies, different core cooling systems, and different reactor layouts. This paper summarizes the general features and utilization of several INVAP research reactor designs, from subcritical and critical assemblies to high-power reactors.

  18. Multi purpose research reactor

    Energy Technology Data Exchange (ETDEWEB)

    Raina, V.K. [Research Reactor Design and Projects Division, Bhabha Atomic Research Centre, Mumbai 400085 (India)]. E-mail: vkrain@magnum.barc.ernet.in; Sasidharan, K. [Research Reactor Design and Projects Division, Bhabha Atomic Research Centre, Mumbai 400085 (India); Sengupta, Samiran [Research Reactor Design and Projects Division, Bhabha Atomic Research Centre, Mumbai 400085 (India); Singh, Tej [Research Reactor Services Division, Bhabha Atomic Research Centre, Mumbai 400085 (India)

    2006-04-15

    At present Dhruva and Cirus reactors provide the majority of research reactor based facilities to cater to the various needs of a vast pool of researchers in the field of material sciences, physics, chemistry, bio sciences, research and development work for nuclear power plants and production of radio isotopes. With a view to further consolidate and expand the scope of research and development in nuclear and allied sciences, a new 20 MWt multi purpose research reactor is being designed. This paper describes some of the design features and safety aspects of this reactor.

  19. A critical review of financial measures as reported in the Ontario hospital balanced scorecard.

    Science.gov (United States)

    Parkinson, John; Tsasis, Peter; Porporato, Marcela

    2007-01-01

    For Ontario hospitals in Canada, the Financial Performance and Condition measures in the Ontario hospital balanced scorecard are especially of interest since in the foreseeable future, they may be linked to provincial government funding decisions. However, we find that these measures lack valuable information on key attributes that affect organizational performance. We suggest changes that focus on key drivers of performance and reflect the operational realities of Ontario hospitals.

  20. Reactor Materials Research

    Energy Technology Data Exchange (ETDEWEB)

    Van Walle, E

    2001-04-01

    The activities of the Reactor Materials Research Department of the Belgian Nuclear Research Centre SCK-CEN in 2000 are summarised. The programmes within the department are focussed on studies concerning (1) fusion, in particular mechanical testing; (2) Irradiation Assisted Stress Corrosion Cracking (IASCC); (3) nuclear fuel; and (4) Reactor Pressure Vessel Steel (RPVS)

  1. Space Nuclear Reactor Engineering

    Energy Technology Data Exchange (ETDEWEB)

    Poston, David Irvin [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2017-03-06

    We needed to find a space reactor concept that could be attractive to NASA for flight and proven with a rapid turnaround, low-cost nuclear test. Heat-pipe-cooled reactors coupled to Stirling engines long identified as the easiest path to near-term, low-cost concept.

  2. Light water reactor program

    Energy Technology Data Exchange (ETDEWEB)

    Franks, S.M.

    1994-12-31

    The US Department of Energy`s Light Water Reactor Program is outlined. The scope of the program consists of: design certification of evolutionary plants; design, development, and design certification of simplified passive plants; first-of-a-kind engineering to achieve commercial standardization; plant lifetime improvement; and advanced reactor severe accident program. These program activities of the Office of Nuclear Energy are discussed.

  3. Status of French reactors

    Energy Technology Data Exchange (ETDEWEB)

    Ballagny, A. [Commissariat a l`Energie Atomique, Saclay (France)

    1997-08-01

    The status of French reactors is reviewed. The ORPHEE and RHF reactors can not be operated with a LEU fuel which would be limited to 4.8 g U/cm{sup 3}. The OSIRIS reactor has already been converted to LEU. It will use U{sub 3}Si{sub 2} as soon as its present stock of UO{sub 2} fuel is used up, at the end of 1994. The decision to close down the SILOE reactor in the near future is not propitious for the start of a conversion process. The REX 2000 reactor, which is expected to be commissioned in 2005, will use LEU (except if the fast neutrons core option is selected). Concerning the end of the HEU fuel cycle, the best option is reprocessing followed by conversion of the reprocessed uranium to LEU.

  4. Nuclear reactor design

    CERN Document Server

    2014-01-01

    This book focuses on core design and methods for design and analysis. It is based on advances made in nuclear power utilization and computational methods over the past 40 years, covering core design of boiling water reactors and pressurized water reactors, as well as fast reactors and high-temperature gas-cooled reactors. The objectives of this book are to help graduate and advanced undergraduate students to understand core design and analysis, and to serve as a background reference for engineers actively working in light water reactors. Methodologies for core design and analysis, together with physical descriptions, are emphasized. The book also covers coupled thermal hydraulic core calculations, plant dynamics, and safety analysis, allowing readers to understand core design in relation to plant control and safety.

  5. Mirror reactor surface study

    Energy Technology Data Exchange (ETDEWEB)

    Hunt, A. L.; Damm, C. C.; Futch, A. H.; Hiskes, J. R.; Meisenheimer, R. G.; Moir, R. W.; Simonen, T. C.; Stallard, B. W.; Taylor, C. E.

    1976-09-01

    A general survey is presented of surface-related phenomena associated with the following mirror reactor elements: plasma first wall, ion sources, neutral beams, director converters, vacuum systems, and plasma diagnostics. A discussion of surface phenomena in possible abnormal reactor operation is included. Several studies which appear to merit immediate attention and which are essential to the development of mirror reactors are abstracted from the list of recommended areas for surface work. The appendix contains a discussion of the fundamentals of particle/surface interactions. The interactions surveyed are backscattering, thermal desorption, sputtering, diffusion, particle ranges in solids, and surface spectroscopic methods. A bibliography lists references in a number of categories pertinent to mirror reactors. Several complete published and unpublished reports on surface aspects of current mirror plasma experiments and reactor developments are also included.

  6. The burden of mental illness and addiction in ontario.

    Science.gov (United States)

    Ratnasingham, Sujitha; Cairney, John; Manson, Heather; Rehm, Jürgen; Lin, Elizabeth; Kurdyak, Paul

    2013-09-01

    Objectif : Le service de Santé publique de l’Ontario et l’Institut pour les sciences évaluatives cliniques ont collaboré pour estimer le fardeau de la maladie attribuable aux trouble mentaux et aux toxicomanies en Ontario. Méthodes : Les années de vie ajustées en fonction de la santé ont servi à estimer le fardeau. Le concept est semblable aux années de vie ajustées en fonction de l’incapacité qui ont servi aux études sur le fardeau mondial de la maladie. Les sources de données sur les maladies mentales et les toxicomanies utilisées étaient notamment des données administratives sur la santé de la province de l’Ontario, des données d’enquête de Statistique Canada et du Centre de toxicomanie et de santé mentale, des données de l’état civil du Bureau du registraire général de l’Ontario, et des données de l’enquête épidémiologique américaine. Résultats : Les 5 affections dont le fardeau est le plus élevé sont : la dépression majeure, le trouble bipolaire affectif, les troubles liés à l’utilisation d’alcool (TUA), la phobie sociale, et la schizophrénie. Le fardeau de la dépression est le double de celui de l’affection mentale la plus proche (c’est-à-dire, le trouble bipolaire affectif) et est plus lourd que le fardeau combiné des 4 cancers les plus répandus en Ontario. Les TUA étaient le seul groupe de maladies dont une proportion substantielle du fardeau était attribuable au décès précoce. Les estimations du fardeau pour les autres affections étaient principalement attribuables à l’incapacité. Conclusions : Le fardeau de ces affections en Ontario est aussi plus lourd que celui d’autres affections, comme le cancer et les maladies infectieuses, ce qui s’explique en grande partie par la prévalence élevée, la chronicité, et l’âge de début de la plupart des troubles mentaux et des problèmes de toxicomanie. Les résultats servent de base importante à l’évaluation future des

  7. Windsor, Ontario Exposure Assessment Study: Design and Methods Validation of Personal, Indoor and Outdoor Air Pollution Monitoring

    Science.gov (United States)

    The Windsor, Ontario Exposure Assessment Study evaluated the contribution of ambient air pollutants to personal and indoor exposures of adults and asthmatic children living in Windsor, Ontario, Canada. In addition, the role of personal, indoor, and outdoor air pollution exposures...

  8. Slurry reactor design studies

    Energy Technology Data Exchange (ETDEWEB)

    Fox, J.M.; Degen, B.D.; Cady, G.; Deslate, F.D.; Summers, R.L. (Bechtel Group, Inc., San Francisco, CA (USA)); Akgerman, A. (Texas A and M Univ., College Station, TX (USA)); Smith, J.M. (California Univ., Davis, CA (USA))

    1990-06-01

    The objective of these studies was to perform a realistic evaluation of the relative costs of tublar-fixed-bed and slurry reactors for methanol, mixed alcohols and Fischer-Tropsch syntheses under conditions where they would realistically be expected to operate. The slurry Fischer-Tropsch reactor was, therefore, operated at low H{sub 2}/CO ratio on gas directly from a Shell gasifier. The fixed-bed reactor was operated on 2.0 H{sub 2}/CO ratio gas after adjustment by shift and CO{sub 2} removal. Every attempt was made to give each reactor the benefit of its optimum design condition and correlations were developed to extend the models beyond the range of the experimental pilot plant data. For the methanol design, comparisons were made for a recycle plant with high methanol yield, this being the standard design condition. It is recognized that this is not necessarily the optimum application for the slurry reactor, which is being proposed for a once-through operation, coproducing methanol and power. Consideration is also given to the applicability of the slurry reactor to mixed alcohols, based on conditions provided by Lurgi for an Octamix{trademark} plant using their standard tubular-fixed reactor technology. 7 figs., 26 tabs.

  9. Competency assessment of microbiology medical laboratory technologists in Ontario, Canada.

    Science.gov (United States)

    Desjardins, Marc; Fleming, Christine Ann

    2014-08-01

    Accreditation in Ontario, Canada, requires that licensed clinical laboratories participate in external quality assessment (also known as proficiency testing) and perform competency evaluation of their staff. To assess the extent of ongoing competency assessment practices, the Quality Management Program--Laboratory Services (QMP-LS) Microbiology Committee surveyed all 112 licensed Ontario microbiology laboratories. The questionnaire consisted of a total of 21 questions that included yes/no, multiple-choice, and short-answer formats. Participants were asked to provide information about existing programs, the frequency of testing, what areas are evaluated, and how results are communicated to the staff. Of the 111 responding laboratories, 6 indicated they did not have a formal evaluation program since they perform only limited bacteriology testing. Of the remaining 105 respondents, 87% perform evaluations at least annually or every 2 years, and 61% include any test or task performed, whereas 16% and 10% focus only on problem areas and high-volume complex tasks, respectively. The most common methods of evaluation were review of external quality assessment (EQA) challenges, direct observation, and worksheet review. With the exception of one participant, all communicate results to staff, and most take remedial action to correct the deficiencies. Although most accredited laboratories have a program to assess the ongoing competency of their staff, the methods used are not standardized or consistently applied, indicating that there is room for improvement. The survey successfully highlighted potential areas for improvement and allowed the QMP-LS Microbiology Committee to provide guidance to Ontario laboratories for establishing or improving existing microbiology-specific competency assessment programs.

  10. Deepwater sculpin status and recovery in Lake Ontario

    Science.gov (United States)

    Weidel, Brian C.; Walsh, Maureen; Connerton, Michael J.; Lantry, Brian F.; Lantry, Jana R.; Holden, Jeremy P.; Yuille, Michael J.; Hoyle, James A.

    2017-01-01

    Deepwater sculpin are important in oligotrophic lakes as one of the few fishes that use deep profundal habitats and link invertebrates in those habitats to piscivores. In Lake Ontario the species was once abundant, however drastic declines in the mid-1900s led some to suggest the species had been extirpated and ultimately led Canadian and U.S. agencies to elevate the species' conservation status. Following two decades of surveys with no captures, deepwater sculpin were first caught in low numbers in 1996 and by the early 2000s there were indications of population recovery. We updated the status of Lake Ontario deepwater sculpin through 2016 to inform resource management and conservation. Our data set was comprised of 8431 bottom trawls sampled from 1996 to 2016, in U.S. and Canadian waters spanning depths from 5 to 225 m. Annual density estimates generally increased from 1996 through 2016, and an exponential model estimated the rate of population increase was ~ 59% per year. The mean total length and the proportion of fish greater than the estimated length at maturation (~ 116 mm) generally increased until a peak in 2013. In addition, the mean length of all deepwater sculpin captured in a trawl significantly increased with depth. Across all years examined, deepwater sculpin densities generally increased with depth, increasing sharply at depths > 150 m. Bottom trawl observations suggest the Lake Ontario deepwater sculpin population has recovered and current densities and biomass densities may now be similar to the other Great Lakes.

  11. Nongastrointestinal helminths in marten (Martes americana) from Ontario, Canada.

    Science.gov (United States)

    Seville, R S; Addison, E M

    1995-10-01

    Six species of nongastrointestinal nematodes were recovered from 405 marten, (Martes americana), examined from six areas in Ontario, Canada in 1992 to 1993. Three species (Crenosoma petrowi, Eucoleus aerophilus, Filaroides martis) were found in the respiratory tract, one in the urinary bladder (Pearsonema plica), one in the kidney (Dioctophyme renale), and one in the musculature (Trichinella sp. larvae). This is the first report of F. martis and P. plica from this host. In addition a specimen of Dracunculus insignis collected from a marten pelt was received. Based on our results, martens are primary definitive hosts for few nongastrointestinal nematodes. Animals in more southern areas had greater species richness than those from higher latitudes.

  12. The identification of liquid ethane in Titan's Ontario Lacus.

    Science.gov (United States)

    Brown, R H; Soderblom, L A; Soderblom, J M; Clark, R N; Jaumann, R; Barnes, J W; Sotin, C; Buratti, B; Baines, K H; Nicholson, P D

    2008-07-31

    Titan was once thought to have global oceans of light hydrocarbons on its surface, but after 40 close flybys of Titan by the Cassini spacecraft, it has become clear that no such oceans exist. There are, however, features similar to terrestrial lakes and seas, and widespread evidence for fluvial erosion, presumably driven by precipitation of liquid methane from Titan's dense, nitrogen-dominated atmosphere. Here we report infrared spectroscopic data, obtained by the Visual and Infrared Mapping Spectrometer (VIMS) on board the Cassini spacecraft, that strongly indicate that ethane, probably in liquid solution with methane, nitrogen and other low-molecular-mass hydrocarbons, is contained within Titan's Ontario Lacus.

  13. Direct cost associated with acquired brain injury in Ontario

    Directory of Open Access Journals (Sweden)

    Chen Amy

    2012-08-01

    Full Text Available Abstract Background Acquired Brain Injury (ABI from traumatic and non traumatic causes is a leading cause of disability worldwide yet there is limited research summarizing the health system economic burden associated with ABI. The objective of this study was to determine the direct cost of publicly funded health care services from the initial hospitalization to three years post-injury for individuals with traumatic (TBI and non-traumatic brain injury (nTBI in Ontario Canada. Methods A population-based cohort of patients discharged from acute hospital with an ABI code in any diagnosis position in 2004 through 2007 in Ontario was identified from administrative data. Publicly funded health care utilization was obtained from several Ontario administrative healthcare databases. Patients were stratified according to traumatic and non-traumatic causes of brain injury and whether or not they were discharged to an inpatient rehabilitation center. Health system costs were calculated across a continuum of institutional and community settings for up to three years after initial discharge. The continuum of settings included acute care emergency departments inpatient rehabilitation (IR complex continuing care home care services and physician visits. All costs were calculated retrospectively assuming the government payer’s perspective. Results Direct medical costs in an ABI population are substantial with mean cost in the first year post-injury per TBI and nTBI patient being $32132 and $38018 respectively. Among both TBI and nTBI patients those discharged to IR had significantly higher treatment costs than those not discharged to IR across all institutional and community settings. This tendency remained during the entire three-year follow-up period. Annual medical costs of patients hospitalized with a brain injury in Ontario in the first follow-up year were approximately $120.7 million for TBI and $368.7 million for nTBI. Acute care cost accounted for 46

  14. Re Inquiry into the Confidentiality of Health Records in Ontario.

    Science.gov (United States)

    1978-06-30

    Several members of the Royal Canadian Mounted Police testified at hearings conducted by a commission appointed to study the confidentiality of health records. On approximately 300 occasions, the police had obtained medical information from physicians and hospitals in Ontario without the prior consent of the patient. The court established that the identity of persons who had furnished the information was privileged information for physicians and other persons subject to the control of a hospital board, but not for various employees of the hospital who were not subject to professional standards of discipline.

  15. Fast Breeder Reactor studies

    Energy Technology Data Exchange (ETDEWEB)

    Till, C.E.; Chang, Y.I.; Kittel, J.H.; Fauske, H.K.; Lineberry, M.J.; Stevenson, M.G.; Amundson, P.I.; Dance, K.D.

    1980-07-01

    This report is a compilation of Fast Breeder Reactor (FBR) resource documents prepared to provide the technical basis for the US contribution to the International Nuclear Fuel Cycle Evaluation. The eight separate parts deal with the alternative fast breeder reactor fuel cycles in terms of energy demand, resource base, technical potential and current status, safety, proliferation resistance, deployment, and nuclear safeguards. An Annex compares the cost of decommissioning light-water and fast breeder reactors. Separate abstracts are included for each of the parts.

  16. Gas cooled fast reactor

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1972-06-01

    Although most of the development work on fast breeder reactors has been devoted to the use of liquid metal cooling, interest has been expressed for a number of years in alternative breeder concepts using other coolants. One of a number of concepts in which interest has been retained is the Gas-Cooled Fast Reactor (GCFR). As presently envisioned, it would operate on the uranium-plutonium mixed oxide fuel cycle, similar to that used in the Liquid Metal Fast Breeder Reactor (LMFBR), and would use helium gas as the coolant.

  17. Microfluidic electrochemical reactors

    Science.gov (United States)

    Nuzzo, Ralph G [Champaign, IL; Mitrovski, Svetlana M [Urbana, IL

    2011-03-22

    A microfluidic electrochemical reactor includes an electrode and one or more microfluidic channels on the electrode, where the microfluidic channels are covered with a membrane containing a gas permeable polymer. The distance between the electrode and the membrane is less than 500 micrometers. The microfluidic electrochemical reactor can provide for increased reaction rates in electrochemical reactions using a gaseous reactant, as compared to conventional electrochemical cells. Microfluidic electrochemical reactors can be incorporated into devices for applications such as fuel cells, electrochemical analysis, microfluidic actuation, pH gradient formation.

  18. Ontario Universities Benefits Survey, 1987-88. Part I: Benefits Excluding Pensions.

    Science.gov (United States)

    University of Western Ontario, London.

    Results of the 1987-1988 survey of benefits, excluding pensions, for 17 Ontario, Canada, universities are presented. Information is provided on the following areas: administration and insurance plans, communication of benefits, proposed changes in benefits, provision of life and dismemberment insurance, maternity leave policy, Ontario health…

  19. The Social Habitus of Drama: The Ontario Drama Curriculum in Theory and Practice

    Science.gov (United States)

    Gallagher, Kathleen

    2016-01-01

    In this article, the author considers the place of drama in the formal curriculum in Ontario, Canada by considering its position in relation to curriculum theory and the texts that formally articulate it as a discipline to be taught in schools. The drama curriculum in Ontario aims to engage young people in activities and experiences that invite…

  20. Endoscopic Follow-Up of Positive Fecal Occult Blood Testing in the Ontario FOBT Project

    Directory of Open Access Journals (Sweden)

    Lawrence Paszat

    2007-01-01

    Full Text Available BACKGROUND: The Ontario FOBT Project is a pilot study of fecal occult blood testing (FOBT for colorectal cancer screening conducted among age-eligible volunteers (50 to 75 years in 12 of 37 public health regions in Ontario.

  1. The Relationship between Parental Substance Abuse and Child Maltreatment: Findings from the Ontario Health Supplement

    Science.gov (United States)

    Walsh, Christine; MacMillan, Harriet L.; Jamieson, Ellen

    2003-01-01

    Objective: This study examined the relationship between reported exposure to child abuse and a history of parental substance abuse (alcohol and drugs) in a community sample in Ontario, Canada. Method: The sample consisted of 8,472 respondents to the Ontario Mental Health Supplement (OHSUP), a comprehensive population survey of mental health. The…

  2. Did Ontario's Zero Tolerance & Graduated Licensing Law Reduce Youth Drunk Driving?

    Science.gov (United States)

    Carpenter, Christopher

    2006-01-01

    On April 1, 1994, Ontario, Canada, instituted a new graduated driver license (GDL) system that effectively set the legal blood alcohol content (BAC) threshold at zero for the first few years of a youth's driving eligibility. I use data from the 1983-2001 Ontario Student Drug Use Surveys (OSDUS) to examine whether the Zero Tolerance (ZT) policy…

  3. Bologna through Ontario Eyes: The Case of the Advanced Diploma in Architectural Technology

    Science.gov (United States)

    Mitchell, Amy D.; Feltham, Mark; Trotter, Lane

    2015-01-01

    Inspired by Ontario's burgeoning interest in postsecondary student mobility, this article examines how elements of Europe's Bologna Process can help bridge the college--university divide of Ontario's postsecondary system. Via discourse analysis of relevant qualification frameworks and program standards, it argues that the current system…

  4. Development of FVSOntario: A Forest Vegetation Simulator Variant and application software for Ontario

    Science.gov (United States)

    Murray E. Woods; Donald C. E. Robinson

    2008-01-01

    The Ontario Ministry of Natural Resources is leading a government-industry partnership to develop an Ontario variant of the Forest Vegetation Simulator (FVS). Based on the Lake States variant and the PrognosisBC user-interface, the FVSOntarioproject is motivated by a need to model the impacts of intensive forest management...

  5. Driving Distance to Telemedicine Units in Northern Ontario as a Measure of Potential Access to Healthcare.

    Science.gov (United States)

    O'Gorman, Laurel D; Hogenbirk, John C

    2016-04-01

    The Ontario Telemedicine Network (OTN) uses technology to help make medical services more accessible to people in medically underserved rural and remote parts of Ontario, Canada. We examined access to OTN-enabled health and medical services in Northern Ontario, which has 775,000 people in communities scattered across an area of 803,000 km(2). We used ArcGIS Network Analyst (Esri, Redlands, CA) to conduct a service area analysis with travel time as a measure of potential access to care. We used road distance and speed limits to estimate travel time between Northern Ontario communities and the nearest OTN unit. In 2014 there were 2,331 OTN units, of which 552 (24%) were located in Northern Ontario. All seven communities in Northern Ontario with a population of 10,000 or greater had OTN units. Almost 97% of the 59 communities with 1,000-10,000 people were within 30 min of an OTN unit. The percentage of communities within 30 min steadily decreased with decreasing population size, to 58% for communities with fewer than 50 people. In total, 86% (690/802) of Northern Ontario communities were within an hour's drive of an OTN unit. This study showed that most Northern Ontario communities were within an hour's drive of an OTN unit. The current distribution of OTN units has the potential to increase access to medical services and to reduce the need for medically related travel for residents of these communities.

  6. Validation of Six Short and Ultra-short Screening Instruments for Depression for People Living with HIV in Ontario: Results from the Ontario HIV Treatment Network Cohort Study

    DEFF Research Database (Denmark)

    Choi, Stephanie KY; Boyle, Eleanor; Burchell, Ann;

    2015-01-01

    of current depression in HIV-positive patients attending HIV specialty care clinics in Ontario. Methods A multi-centre validation study was conducted in Ontario to examine the validity and accuracy of three instruments (the Center for Epidemiologic Depression Scale [CESD20], the Kessler Psychological...... Distress Scale [K10], and the Patient Health Questionnaire depression scale [PHQ9]) and their short forms (CESD10, K6, and PHQ2) in diagnosing current major depression among 190 HIV-positive patients in Ontario. Results from the three instruments and their short forms were compared to results from the gold...... positive predictive value (0.49–0.58) at their optimal cut-points. Conclusion Among people in HIV care in Ontario, Canada, the three instruments and their short forms performed equally well and accurately. When further in-depth assessments become available, shorter instruments might find greater clinical...

  7. Improvement of Severe Accident Analysis Computer Code and Development of Accident Management Guidance for Heavy Water Reactor

    Energy Technology Data Exchange (ETDEWEB)

    Park, Soo Yong; Kim, Ko Ryu; Kim, Dong Ha; Kim, See Darl; Song, Yong Mann; Choi, Young; Jin, Young Ho

    2005-03-15

    The objective of the project is to develop a generic severe accident management guidance(SAMG) applicable to Korean PHWR and the objective of this 3 year continued phase is to construct a base of the generic SAMG. Another objective is to improve a domestic computer code, ISAAC (Integrated Severe Accident Analysis code for CANDU), which still has many deficiencies to be improved in order to apply for the SAMG development. The scope and contents performed in this Phase-2 are as follows: The characteristics of major design and operation for the domestic Wolsong NPP are analyzed from the severe accident aspects. On the basis, preliminary strategies for SAM of PHWR are selected. The information needed for SAM and the methods to get that information are analyzed. Both the individual strategies applicable for accident mitigation under PHWR severe accident conditions and the technical background for those strategies are developed. A new version of ISAAC 2.0 has been developed after analyzing and modifying the existing models of ISAAC 1.0. The general SAMG applicable for PHWRs confirms severe accident management techniques for emergencies, provides the base technique to develop the plant specific SAMG by utility company and finally contributes to the public safety enhancement as a NPP safety assuring step. The ISAAC code will be used inevitably for the PSA, living PSA, severe accident analysis, SAM program development and operator training in PHWR.

  8. Factors associated with seat belt use: an evaluation from the Ontario Health Survey.

    Science.gov (United States)

    Sahai, V S; Pitblado, J R; Bota, G W; Rowe, B H

    1998-01-01

    This study examines the factors associated with seat belt use for drivers and passengers in Ontario. Using the 1990 Ontario Health Survey, a population-based survey of non-institutionalized Ontario residents, factors associated with seat belt use among drivers and passengers were identified and are reported as unadjusted and adjusted odds ratios (OR; 95% CI). Seat belt non-use in Ontario drivers was most strongly associated with younger age (p Seat belt non-use in passengers was associated with younger age (p seat belt use has been shown to reduce injuries in the event of a crash. Any strategy to increase seat belt use in Ontario should be targeted to involve both drivers and passengers. Attention should be paid to increasing seat belt usage by younger adults, males, and especially those living in northern and rural regions.

  9. 46 CFR 401.405 - Basic rates and charges on the St. Lawrence River and Lake Ontario.

    Science.gov (United States)

    2010-10-01

    ... Lake Ontario. 401.405 Section 401.405 Shipping COAST GUARD (GREAT LAKES PILOTAGE), DEPARTMENT OF... § 401.405 Basic rates and charges on the St. Lawrence River and Lake Ontario. Except as provided in.... registered pilots in the St. Lawrence River and Lake Ontario. (a) Area 1 (Designated Waters): Service...

  10. Fusion Reactor Materials

    Energy Technology Data Exchange (ETDEWEB)

    Decreton, M

    2002-04-01

    The objective of SCK-CEN's programme on fusion reactor materials is to contribute to the knowledge on the radiation-induced behaviour of fusion reactor materials and components as well as to help the international community in building the scientific and technical basis needed for the construction of the future reactor. Ongoing projects include: the study of the mechanical and chemical (corrosion) behaviour of structural materials under neutron irradiation and water coolant environment; the investigation of the characteristics of irradiated first wall material such as beryllium; investigations on the management of materials resulting from the dismantling of fusion reactors including waste disposal. Progress and achievements in these areas in 2001 are discussed.

  11. New reactor type proposed

    CERN Multimedia

    2003-01-01

    "Russian scientists at the Research Institute of Nuclear Power Engineering in Moscow are hoping to develop a new reactor that will use lead and bismuth as fuel instead of uranium and plutonium" (1/2 page).

  12. Reactor Neutrino Spectra

    CERN Document Server

    Hayes, A C

    2016-01-01

    We present a review of the antineutrino spectra emitted from reactors. Knowledge of these and their associated uncertainties are crucial for neutrino oscillation studies. The spectra used to-date have been determined by either conversion of measured electron spectra to antineutrino spectra or by summing over all of the thousands of transitions that makeup the spectra using modern databases as input. The uncertainties in the subdominant corrections to beta-decay plague both methods, and we provide estimates of these uncertainties. Improving on current knowledge of the antineutrino spectra from reactors will require new experiments. Such experiments would also address the so-called reactor neutrino anomaly and the possible origin of the shoulder observed in the antineutrino spectra measured in recent high-statistics reactor neutrino experiments.

  13. Reactor BR2. Introduction

    Energy Technology Data Exchange (ETDEWEB)

    Gubel, P

    2001-04-01

    The BR2 is a materials testing reactor and is still one of SCK-CEN's important nuclear facilities. After an extensive refurbishment to compensate for the ageing of the installation, the reactor was restarted in April 1997. During the last three years, the availability of the installation was maintained at an average level of 97.6 percent. In the year 2000, the reactor was operated for a total of 104 days at a mean power of 56 MW. In 2000, most irradiation experiments were performed in the CALLISTO PWR loop. The report describes irradiations achieved or under preparation in 2000, including the development of advanced facilities and concept studies for new programmes. An overview of the scientific irradiation programmes as well as of the R and D programme of the BR2 reactor in 2000 is given.

  14. Future Reactor Experiments

    OpenAIRE

    He, Miao

    2013-01-01

    The measurement of the neutrino mixing angle $\\theta_{13}$ opens a gateway for the next generation experiments to measure the neutrino mass hierarchy and the leptonic CP-violating phase. Future reactor experiments will focus on mass hierarchy determination and the precision measurement of mixing parameters. Mass hierarchy can be determined from the disappearance of reactor electron antineutrinos based on the interference effect of two separated oscillation modes. Relative and absolute measure...

  15. Reactor Neutrino Experiments

    OpenAIRE

    Cao, Jun

    2007-01-01

    Precisely measuring $\\theta_{13}$ is one of the highest priority in neutrino oscillation study. Reactor experiments can cleanly determine $\\theta_{13}$. Past reactor neutrino experiments are reviewed and status of next precision $\\theta_{13}$ experiments are presented. Daya Bay is designed to measure $\\sin^22\\theta_{13}$ to better than 0.01 and Double Chooz and RENO are designed to measure it to 0.02-0.03. All are heading to full operation in 2010. Recent improvements in neutrino moment measu...

  16. Department of Reactor Technology

    DEFF Research Database (Denmark)

    Risø National Laboratory, Roskilde

    The general development of the Department of Reactor Technology at Risø during 1981 is presented, and the activities within the major subject fields are described in some detail. Lists of staff, publications, and computer programs are included.......The general development of the Department of Reactor Technology at Risø during 1981 is presented, and the activities within the major subject fields are described in some detail. Lists of staff, publications, and computer programs are included....

  17. Helias reactor studies

    Energy Technology Data Exchange (ETDEWEB)

    Beidler, C.D. [Max-Planck-Institut fuer Plasmaphysik, Garching (Germany); Grieger, G. [Max-Planck-Institut fuer Plasmaphysik, Garching (Germany); Harmeyer, E. [Max-Planck-Institut fuer Plasmaphysik, Garching (Germany); Kisslinger, J. [Max-Planck-Institut fuer Plasmaphysik, Garching (Germany); Karulin, N. [Nuclear Fusion Institute, Moscow (Russian Federation); Maurer, W. [Forschungszentrum Karlsruhe GmbH Technik und Umwelt (Germany); Nuehrenberg, J. [Max-Planck-Institut fuer Plasmaphysik, Garching (Germany); Rau, F. [Max-Planck-Institut fuer Plasmaphysik, Garching (Germany); Sapper, J. [Max-Planck-Institut fuer Plasmaphysik, Garching (Germany); Wobig, H. [Max-Planck-Institut fuer Plasmaphysik, Garching (Germany)

    1995-10-01

    The present status of Helias reactor studies is characterised by the identification and investigation of specific issues which result from the particular properties of this type of stellarator. On the technical side these are issues related to the coil system, while physics studies have concentrated on confinement, alpha-particle behaviour and ignition conditions. The usual assumptions have been made in those fields which are common to all toroidal fusion reactors: blanket and shield, refuelling and exhaust, safety and economic aspects. For blanket and shield sufficient space has been provided, a detailed concept will be developed in future. To date more emphasis has been placed on scoping and parameter studies as opposed to fixing a specific set of parameters and providing a detailed point study. One result of the Helias reactor studies is that physical dimensions are on the same order as those of tokamak reactors. However, it should be noticed that this comparison is difficult in view of the large spectrum of tokamak reactors ranging from a small reactor like Aries, to a large device such as SEAFP. The notion that the large aspect ratio of 10 or more in Helias configurations also leads to large reactors is misleading, since the large major radius of 22 m is compensated by the average plasma radius of 1.8 m and the average coil radius of 5 m. The plasma volume of 1400 m{sup 3} is about the same as the ITER reactor and the magnetic energy of the coil system is about the same or even slightly smaller than envisaged in ITER. (orig.)

  18. INVAP's Research Reactor Designs

    OpenAIRE

    Eduardo Villarino; Alicia Doval

    2011-01-01

    INVAP, an Argentine company founded more than three decades ago, is today recognized as one of the leaders within the research reactor industry. INVAP has participated in several projects covering a wide range of facilities, designed in accordance with the requirements of our different clients. For complying with these requirements, INVAP developed special skills and capabilities to deal with different fuel assemblies, different core cooling systems, and different reactor layouts. This paper ...

  19. Regulating Traditional Chinese Medicine Practitioners and Acupuncturists in Ontario, Canada

    Directory of Open Access Journals (Sweden)

    Glen E. Randall

    2015-12-01

    Full Text Available In 2006, the Ontario government passed the Traditional Chinese Medicine Act, which granted Traditional Chinese Medicine practitioners and Acupuncturists (TCM/A practitioners self-regulatory status under the Regulated Health Professions Act, 1991. The goal of the legislation was to create a new regulatory college that would set and enforce high standards of care and safety in order to enhance public protection and access to a range of traditional and alternative therapies. In April 2013, the College of Traditional Chinese Medicine Practitioners and Acupuncturists of Ontario was officially launched. Several factors account for the government’s decision to delegate self-regulatory authority to TCM/A practitioners through the creation of a regulatory college. In particular, the government’s decision seems to have been influenced by lobbying of some practitioners, greater public acceptance of alternative medicines, patient safety concerns related to acupuncture cases in the media, and the precedence of self-regulatory status being granted to these practitioners in other provinces. The degree to which the legislation has achieved its goals is difficult to determine given the short period of time the regulatory college has existed. However, the fact that the college has developed standards of practice to guide TCM/A practitioners and has a process in place to address public complaints is an early indication of movement toward achieving the policy’s goals.

  20. Linezolid resistance in Enterococcus faecium isolated in Ontario, Canada.

    Science.gov (United States)

    Patel, Samir N; Memari, Nader; Shahinas, Dea; Toye, Baldwin; Jamieson, Frances B; Farrell, David J

    2013-12-01

    Recent studies have described linezolid-resistant MRSA and vancomycin-resistant enterococci (VRE) occurring worldwide, including an outbreak of linezolid-resistant MRSA. The objective of this study was to determine if linezolid-resistant enterococci are present in clinical isolates in Ontario, Canada. From January 2010 to June 2012, all enterococcal isolates submitted to the Public Health Ontario Laboratory (PHOL) for confirmation of VRE and susceptibility testing were included in this study. Of 2829 enterococcal isolates tested, 12 Enterococcus faecium were found to be resistant to linezolid. All linezolid-resistant isolates were also resistant to ampicillin, ciprofloxacin, and vancomycin. In addition, 33% of isolates were non-susceptible to daptomycin, whereas 41% were resistant to quinupristin/dalfopristin. Molecular characterization of these isolates showed that 8/12 isolates (66.7%) contained the mutation G2576T in 23S rRNA, which has been associated with linezolid resistance. Amplification and sequencing of L3- and L4-coding genes did not reveal mutations associated with linezolid resistance. One isolate contained the cfr gene, which is associated with linezolid resistance, and has been found in staphylococcal species and E. faecalis. These data show that occurrence of linezolid resistance is still rare among enterococcal isolates referred to PHOL though detection of cfr in E. faecium is concerning as it has the potential to disseminate among other enterococci.

  1. Concentration and biochemical gradients of seston in Lake Ontario

    Science.gov (United States)

    Kelly, Patrick T.; Weidel, Brian C.; Paufve, Matthew R.; O'Malley, Brian P.; Watkins, James M.; Rudstam, Lars G.; Jones, Stuart E.

    2017-01-01

    Spatial variability in resource quantity and quality may have important implications for the distribution and productivity of primary consumers. In Lake Ontario, ecosystem characteristics suggest the potential for significant spatial heterogeneity in seston quantity and quality, particularly due to the potential for nearshore-offshore gradients in allochthonous nutrient supply, and the formation of a deep chlorophyll layer (DCL) in July. We assessed total and zooplankton food particle size-fractionated chlorophyll a concentrations, as well as carbon-to-phosphorus stoichiometry and essential fatty acid composition of seston across a distance-from-shore and depth transect. We observed time, sampling depth, and distance from shore to be the best predictors of chlorophyll a concentration. Resource quality was much more homogenous in space, but there were strong patterns through time, as both stoichiometric and fatty acid qualities in general were greatest in May, and lowest in July/August. We did observe a peak in essential fatty acid concentration near the DCL in during time of formation, possibly due to differences in phytoplankton community composition between the DCL and epilimnion. These results suggest the potential for a spatially and temporally dynamic resource base for consumers in Lake Ontario, which may be important in developing a broader understanding of variable consumer productivity.

  2. Introducing Midwifery-led Birth Centres to Ontario

    Directory of Open Access Journals (Sweden)

    Cristina A. Mattison

    2015-03-01

    Full Text Available In Ontario, maternal health systems are changing, with an increasing variety of childbirth options being offered to low-risk pregnant women. Midwifery became a regulated profession in the province in 1994: providing primary care throughout pregnancy, labour and for up to six weeks postpartum. Currently there are three midwifery-led birth centres operating in Ontario, two of which opened in early 2014. The Ministry of Health and Long-Term Care (MoHLTC has launched these new birth centres in order to offer women more choice in health care provider and birth setting. This shift is representative of the MoHLTC’s push to move services out of hospitals and into community-based settings. While the birth centre initiative is in its early stages and a formal program evaluation is needed, it has the potential, if scaled up, to decrease the need for hospital beds as well as reduce health care costs through more appropriate care for low-risk pregnancies, leading to fewer interventions.

  3. Expanding the Scope of Practice for Pharmacists in Ontario

    Directory of Open Access Journals (Sweden)

    Glen Edward Randall

    2015-04-01

    Full Text Available On 15 December 2009 the Regulated Health Professions Statute Law Amendment Act, 2009 (Bill 179 received Royal Assent in Ontario. The resulting legislative amendments were intended to strengthen government oversight of the health regulatory colleges, promote interprofessional collaboration, and make better use of health professionals’ existing skills and training by enhancing the scope of practice for several health professions in order to improve health system efficiency. Among the most notable scope of practice enhancements were those given to pharmacists, who would be permitted to: modify and renew existing prescriptions, prescribe a limited range of drugs independent of a physician, and administer medications such as vaccinations via injection or inhalation. The reform was driven in large part by the government’s concerns related to the rising cost of health care, the public’s desire for greater access to services, and demonstrated successes of similar reforms in other jurisdictions. While the Ontario reform has had some clear success, such as expanding the public’s access to influenza vaccinations, to date, the evidence of achieving other goals remains weak. In particular, there is no clear evidence of improved health system efficiency and associated cost effectiveness. Moreover, it is possible that Ontario’s umbrella regulatory model may be making interprofessional collaboration more, rather than less, difficult to realize.

  4. Degrees of change: Steps towards an Ontario global warming strategy

    Energy Technology Data Exchange (ETDEWEB)

    Spivak, M.; Jessup, P.; Lourie, B.; Macdonald, M.; Makuch, Z.; Valiante, M.; Warner, B.

    1991-06-01

    The measures and policy strategies that would be required to achieve a 20% reduction in Ontario carbon dioxide emissions by 2005 are explored. Estimates of primary and secondary energy use and CO{sub 2} emissions for 1988 and 2005 are presented, and three strategies are examined in each end-use sector: energy efficiency, fuel switching, and renewable energy measures. For the residential, commercial, transport, industrial, and iron/steel industry sectors, a profile of CO{sub 2} emissions and energy intensity trends is offered, opportunities for CO{sub 2} reduction and measures to reduce CO{sub 2} emissions are described, and the economic and social implications are discussed. Natural gas cogeneration is examined as a technological option for reducing CO{sub 2} emissions and creating important opportunities for the Ontario economy. The role of energy utility reform in CO{sub 2} emissions reduction is assessed in an examination of the key factors needed for the design and implementation of demand side management programs that achieve high participation rates and significant reductions in energy demand. 102 refs., 6 figs., 53 tabs.

  5. Tobacco Retail Outlets and Vulnerable Populations in Ontario, Canada

    Directory of Open Access Journals (Sweden)

    Michael O. Chaiton

    2013-12-01

    Full Text Available Interest has been increasing in regulating the location and number of tobacco vendors as part of a comprehensive tobacco control program. The objective of this paper is to examine the distribution of tobacco outlets in a large jurisdiction, to assess: (1 whether tobacco outlets are more likely to be located in vulnerable areas; and (2 what proportion of tobacco outlets are located close to schools. Retail locations across the Province of Ontario from Ministry of Health Promotion data were linked to 2006 Census data at the neighbourhood level. There was one tobacco retail outlet for every 1,000 people over age 15 in Ontario. Density of outlets varied by public health unit, and was associated with the number of smokers. Tobacco outlets were more likely to be located in areas that had high neighbourhood deprivation, in both rural and urban areas. Outlets were less likely to be located in areas with high immigrant populations in urban areas, with the reverse being true for rural areas. Overall, 65% of tobacco retailers were located within 500 m of a school. The sale of tobacco products is ubiquitous, however, neighbourhoods with lower socio-economic status are more likely to have easier availability of tobacco products and most retailers are located within walking distance of a school. The results suggest the importance of policies to regulate the location of tobacco retail outlets.

  6. Introducing Midwifery-led Birth Centres to Ontario

    Directory of Open Access Journals (Sweden)

    Cristina A. Mattison

    2015-03-01

    Full Text Available In Ontario, maternal health systems are changing, with an increasing variety of childbirth options being offered to low-risk pregnant women. Midwifery became a regulated profession in the province in 1994: providing primary care throughout pregnancy, labour and for up to six weeks postpartum. Currently there are three midwifery-led birth centres operating in Ontario, two of which opened in early 2014. The Ministry of Health and Long-Term Care (MoHLTC has launched these new birth centres in order to offer women more choice in health care provider and birth setting. This shift is representative of the MoHLTC’s push to move services out of hospitals and into community-based settings. While the birth centre initiative is in its early stages and a formal program evaluation is needed, it has the potential, if scaled up, to decrease the need for hospital beds as well as reduce health care costs through more appropriate care for low-risk pregnancies, leading to fewer interventions.

  7. The appropriateness and persistence of testosterone replacement therapy in Ontario.

    Science.gov (United States)

    Martins, Diana; Yao, Zhan; Tadrous, Mina; Shah, Baiju R; Juurlink, David N; Mamdani, Muhammad M; Gomes, Tara

    2017-02-01

    To examine the concordance between testosterone replacement therapy (TRT) use and established reimbursement criteria, as well as compare the persistence of use among available formulations (injectable, oral, topical gel, transdermal patch) among elderly men in Ontario, Canada. We conducted a retrospective cohort study of men aged 66 years or older in Ontario newly treated with testosterone between 1 January 2009 and 31 December 2012 using linked health administrative data. Continuous use was defined on the basis of prescription refills issued within 180 days of the preceding prescription. We studied men who received at least two consecutive TRT prescriptions. We estimated the prevalence of hypogonadism, human immunodeficiency virus, specialist visits and lab tests for serum testosterone prior to initiation of TRT to investigate concordance with prescribing criteria. We also performed a Kaplan-Meier analysis to test for differences in the median time to discontinuation among formulations. Among the 4797 men who received at least two TRT prescriptions, only 38.7% met the reimbursement criteria for use prior to initiating therapy. The median time to discontinuation differed significantly among formulations and was longest among recipients of oral TRT products (383 days), and lower for recipients of topical gels (319 days), injectable (283 days) and transdermal patches (160 days; Log-rank test p therapy, and many discontinue TRT within a year of initiation. Copyright © 2016 John Wiley & Sons, Ltd. Copyright © 2016 John Wiley & Sons, Ltd.

  8. The reactor antineutrino anomalies

    Energy Technology Data Exchange (ETDEWEB)

    Haser, Julia; Buck, Christian; Lindner, Manfred [Max-Planck-Institut fuer Kernphysik, Heidelberg (Germany)

    2016-07-01

    Major discoveries were made in the past few years in the field of neutrino flavour oscillation. Nuclear reactors produce a clean and intense flux of electron antineutrinos and are thus an essential neutrino source for the determination of oscillation parameters. Most currently the reactor antineutrino experiments Double Chooz, Daya Bay and RENO have accomplished to measure θ{sub 13}, the smallest of the three-flavour mixing angles. In the course of these experiments two anomalies emerged: (1) the reanalysis of the reactor predictions revealed a deficit in experimentally observed antineutrino flux, known as the ''reactor antineutrino anomaly''. (2) The high precision of the latest generation of neutrino experiments resolved a spectral shape distortion relative to the expected energy spectra. Both puzzles are yet to be solved and triggered new experimental as well as theoretical studies, with the search for light sterile neutrinos as most popular explanation for the flux anomaly. This talk outlines the two reactor antineutrino anomalies. Discussing possible explanations for their occurrence, recent and upcoming efforts to solve the reactor puzzles are highlighted.

  9. Moon base reactor system

    Science.gov (United States)

    Chavez, H.; Flores, J.; Nguyen, M.; Carsen, K.

    1989-01-01

    The objective of our reactor design is to supply a lunar-based research facility with 20 MW(e). The fundamental layout of this lunar-based system includes the reactor, power conversion devices, and a radiator. The additional aim of this reactor is a longevity of 12 to 15 years. The reactor is a liquid metal fast breeder that has a breeding ratio very close to 1.0. The geometry of the core is cylindrical. The metallic fuel rods are of beryllium oxide enriched with varying degrees of uranium, with a beryllium core reflector. The liquid metal coolant chosen was natural lithium. After the liquid metal coolant leaves the reactor, it goes directly into the power conversion devices. The power conversion devices are Stirling engines. The heated coolant acts as a hot reservoir to the device. It then enters the radiator to be cooled and reenters the Stirling engine acting as a cold reservoir. The engines' operating fluid is helium, a highly conductive gas. These Stirling engines are hermetically sealed. Although natural lithium produces a lower breeding ratio, it does have a larger temperature range than sodium. It is also corrosive to steel. This is why the container material must be carefully chosen. One option is to use an expensive alloy of cerbium and zirconium. The radiator must be made of a highly conductive material whose melting point temperature is not exceeded in the reactor and whose structural strength can withstand meteor showers.

  10. Glacially-streamlined hard and soft beds of the paleo- Ontario ice stream in Southern Ontario and New York state

    Science.gov (United States)

    Eyles, Nick; Doughty, Mike

    2016-06-01

    An extensive tract of glacially-streamlined terrain across a large part of Southern Ontario, Canada, is recognized as the footprint of the paleo-Ontario Ice Stream (OIS) within the easternmost Great Lakes sector of the last Laurentide Ice Sheet. The upstream part is a drumlinized and megagrooved 'hard bed' underlain by Cambro-Ordovician carbonates and sandstones. Subglacial plucking of jointed limestone on the lateral margins of drumlinized escarpment interfluves and rock drumlins generated a large flux of coarse debris within the ice base, recorded by sporadic spreads of hummocky rubble moraine. Downstream, the hard bed passes underneath a streamlined 'soft' bed of till-cored ('drift') drumlins and megaridges of the classic Peterborough and New York State drumlin fields. The boundary between the two bed types is a ~ 10 km wide 'mixed bed' of isolated drift drumlins resting on drumlinized rock suggesting a common erosional origin. Spatial variation in the geomorphology of ~ 2500 drift drumlins, indicates that megaridges are clones resulting from the erosion and dissection of larger parent drumlins. A large moraine system may mark the final collapse and melt of the ice stream, accompanying abrupt flow switching of its margin.

  11. Reactor Safety Planning for Prometheus Project, for Naval Reactors Information

    Energy Technology Data Exchange (ETDEWEB)

    P. Delmolino

    2005-05-06

    The purpose of this letter is to submit to Naval Reactors the initial plan for the Prometheus project Reactor Safety work. The Prometheus project is currently developing plans for cold physics experiments and reactor prototype tests. These tests and facilities may require safety analysis and siting support. In addition to the ground facilities, the flight reactor units will require unique analyses to evaluate the risk to the public from normal operations and credible accident conditions. This letter outlines major safety documents that will be submitted with estimated deliverable dates. Included in this planning is the reactor servicing documentation and shipping analysis that will be submitted to Naval Reactors.

  12. REACTOR GROUT THERMAL PROPERTIES

    Energy Technology Data Exchange (ETDEWEB)

    Steimke, J.; Qureshi, Z.; Restivo, M.; Guerrero, H.

    2011-01-28

    Savannah River Site has five dormant nuclear production reactors. Long term disposition will require filling some reactor buildings with grout up to ground level. Portland cement based grout will be used to fill the buildings with the exception of some reactor tanks. Some reactor tanks contain significant quantities of aluminum which could react with Portland cement based grout to form hydrogen. Hydrogen production is a safety concern and gas generation could also compromise the structural integrity of the grout pour. Therefore, it was necessary to develop a non-Portland cement grout to fill reactors that contain significant quantities of aluminum. Grouts generate heat when they set, so the potential exists for large temperature increases in a large pour, which could compromise the integrity of the pour. The primary purpose of the testing reported here was to measure heat of hydration, specific heat, thermal conductivity and density of various reactor grouts under consideration so that these properties could be used to model transient heat transfer for different pouring strategies. A secondary purpose was to make qualitative judgments of grout pourability and hardened strength. Some reactor grout formulations were unacceptable because they generated too much heat, or started setting too fast, or required too long to harden or were too weak. The formulation called 102H had the best combination of characteristics. It is a Calcium Alumino-Sulfate grout that contains Ciment Fondu (calcium aluminate cement), Plaster of Paris (calcium sulfate hemihydrate), sand, Class F fly ash, boric acid and small quantities of additives. This composition afforded about ten hours of working time. Heat release began at 12 hours and was complete by 24 hours. The adiabatic temperature rise was 54 C which was within specification. The final product was hard and displayed no visible segregation. The density and maximum particle size were within specification.

  13. Scaleable, High Efficiency Microchannel Sabatier Reactor Project

    Data.gov (United States)

    National Aeronautics and Space Administration — A Microchannel Sabatier Reactor System (MSRS) consisting of cross connected arrays of isothermal or graded temperature reactors is proposed. The reactor array...

  14. Is Ontario Hydro for sale? Provincial commission recommends dissolving Utility`s 90-year monopoly

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    1996-06-01

    The possible breakup and privatization of Ontario Hydro was discussed, triggered by the recent release of the Macdonald Commission report which found that `there is no longer a sound economic rationale for allowing a large monopoly to dominate the electricity system`. The essence of the Committee`s recommendation was (1) to allow all electricity generators, including out-of-province suppliers to compete on equal terms for Ontario business;, (2) operate Ontario Hydro`s four nuclear generation plants as separate competing entities and keep them in public ownership, (3) provide open non-discriminatory access to Ontario`s transmission system, (4) move responsibility for managing Ontario Hydro`s high-voltage transmission assets to an independent {sup T}ransmission Grid Company`, (5) reduce the number of distribution utilities from the current total of 307, and (6) create community-based organizations to serve remote communities that are not connected to the transmission system. The expectation is that competition will lead to lower energy prices and more choice for consumers. No action from the Ontario government is expected for several months, and not without extensive consultation with the industry and consumers.

  15. The role of transboundary flow on 1995 ozone levels in Ontario, Canada

    Energy Technology Data Exchange (ETDEWEB)

    Yap, D.; Fraser, D.; Kiely, P.; Brou, G. de; Dong, W. [Ontario Ministry of Environmental and Energy, Etobicoke, Ontario (Canada)

    1997-12-31

    Exceedances of the ozone criterion in Ontario are often widespread and associated with episodes. Here an episode refers to distinct meteorological events in which there is the simultaneous occurrence of widespread (hundreds of kilometers) elevated ozone levels (greater than 80 ppb maximum hourly concentration). An examination of the ozone data for 1995 (based on 45 monitoring sites) indicates that there were 16 such episode days in Ontario. This was slightly higher than the numbers reported in 1992 to 1994. The trend in the number of ozone episode days in Ontario over the past 17 years show the highest frequencies in 1988, 1991 and 1983. Associated air parcel back trajectories on the 16 episode days all show transboundary flows from the neighboring states of the U.S. Typically air parcels traversed regions south-southwest of southwestern Ontario. In 1995 there were, however, a number of episode days with associated southeasterly flows compared to that experienced in previous years. For example, there were about 25 such cases in 1995 compared to 8% in 1991 and none in 1988. On ozone excursion days (exceedances of 124 ppb) in Michigan, transboundary flows were significant and ozone levels in Ontario were generally high. These results support the concept of a common airshed between Ontario and neighboring states and that southern Ontario is located often within the northern edge of the ozone problem area in eastern North America.

  16. Attitudes toward drug prescription rights: a survey of Ontario chiropractors.

    Science.gov (United States)

    Emary, Peter Charles; Stuber, Kent Jason

    2015-01-01

    Several published surveys have shown that chiropractors are generally split in their opinions regarding the right to prescribe drugs in chiropractic practice. Many of these studies have been limited by low response rates, leaving the generalizability of their findings open to question. The aim of the current study was to ascertain the general attitudes of chiropractors in Ontario, Canada toward the inclusion of drug prescription rights in their scope of practice. Relationships between these attitudes and the number of years in practice including differences in philosophical orientation were also explored. A 14-item questionnaire was developed and invitations sent via e-mail to all eligible 2,677 chiropractors in active practice registered electronically with the College of Chiropractors of Ontario in February 2015. Data were collected and analyzed using descriptive and inferential statistics. 960 questionnaires were completed for a 36 % response rate. The majority of respondents agreed that chiropractors should be permitted to prescribe musculoskeletal medications such as over-the-counter and prescription-based analgesics, anti-inflammatories, and muscle relaxants. Over two-thirds also felt that with limited prescriptive authority chiropractors could help reduce patients' reliance on these types of drugs. Over three-quarters were opposed however to chiropractors having full prescribing rights. The majority indicated they recommend over-the-counter medications to acute and chronic patients to some extent in clinical practice. Nearly two-thirds perceived their knowledge of musculoskeletal medications as high or very high, while a similar proportion perceived their knowledge of drugs for non-musculoskeletal conditions to be low or very low. A majority of respondents felt that further education in pharmacology would be necessary for those in the profession wishing to prescribe medications. More recent graduates and those who espoused a broad scope of chiropractic

  17. LMFBR type reactor

    Energy Technology Data Exchange (ETDEWEB)

    Shimizu, Takeshi; Iida, Masaaki; Moriki, Yasuyuki

    1994-10-18

    A reactor core is divided into a plurality of coolants flowrate regions, and electromagnetic pumps exclusively used for each of the flowrate regions are disposed to distribute coolants flowrates in the reactor core. Further, the flowrate of each of the electromagnetic pumps is automatically controlled depending on signals from a temperature detector disposed at the exit of the reactor core, so that the flowrate of the region can be controlled optimally depending on the burning of reactor core fuels. Then, the electromagnetic pumps disposed for every divided region are controlled respectively, so that the coolants flowrate distribution suitable to each of the regions can be attained. Margin for fuel design is decreased, fuels are used effectively, as well as an operation efficiency can be improved. Moreover, since the electromagnetic pump has less flow resistance compared with a mechanical type pump, and flow resistance of the reactor core flowrate control mechanism is eliminated, greater circulating flowrate can be ensured after occurrence of accident in a natural convection using a buoyancy of coolants utilizable for after-heat removal as a driving force. (N.H.).

  18. Reactor Structural Materials: Reactor Pressure Vessel Steels

    Energy Technology Data Exchange (ETDEWEB)

    Chaouadi, R

    2000-07-01

    The objectives of SCK-CEN's R and D programme on Rector Pressure Vessel (RPV) Steels are:(1) to complete the fracture toughness data bank of various reactor pressure vessel steels by using precracked Charpy specimens that were tested statically as well as dynamically; (2) to implement the enhanced surveillance approach in a user-friendly software; (3) to improve the existing reconstitution technology by reducing the input energy (short cycle welding) and modifying the stud geometry. Progress and achievements in 1999 are reported.

  19. Regulating Traditional Chinese Medicine Practitioners and Acupuncturists in Ontario, Canada

    Directory of Open Access Journals (Sweden)

    Glen E. Randall

    2015-12-01

    Full Text Available In 2006, the Ontario government passed the Traditional Chinese Medicine Act, which granted Traditional Chinese Medicine practitioners and Acupuncturists (TCM/A practitioners self-regulatory status under the Regulated Health Professions Act, 1991. The goal of the legislation was to create a new regulatory college that would set and enforce high standards of care and safety in order to enhance public protection and access to a range of traditional and alternative therapies. In April 2013, the College of Traditional Chinese Medicine Practitioners and Acupuncturists of Ontario was officially launched. Several factors account for the government’s decision to delegate self-regulatory authority to TCM/A practitioners through the creation of a regulatory college. In particular, the government’s decision seems to have been influenced by lobbying of some practitioners, greater public acceptance of alternative medicines, patient safety concerns related to acupuncture cases in the media, and the precedence of self-regulatory status being granted to these practitioners in other provinces. The degree to which the legislation has achieved its goals is difficult to determine given the short period of time the regulatory college has existed. However, the fact that the college has developed standards of practice to guide TCM/A practitioners and has a process in place to address public complaints is an early indication of movement toward achieving the policy’s goals. Le gouvernement de l'Ontario a fait voter en 2006 la Loi sur les praticiens en médecine traditionnelle chinoise, qui accorde aux praticiens en médecine traditionnelle chinoise et aux acupuncteurs (praticiens en MTC/A le statut de profession autonome dans le cadre la Loi sur les professions de la santé réglementées de 1991. Le but de la Loi était de créer un ordre professionnel capable d'établir et appliquer des normes de qualité et de sécurité des soins, ceci dans le but d

  20. Survey of Neisseria gonorrhoeae Antimicrobial Susceptibility in Ontario

    Directory of Open Access Journals (Sweden)

    Vivian G Loo

    1990-01-01

    Full Text Available The minimal inhibitory concentrations (MICs of penicillin, tetracycline, erythromycin, cefoxitin, ceftriaxone and spectinomycin were determined for 300 consecutive strains of Neisseria gonorrhoeae collected from physicians’ offices in Ontario. Only four isolates were found to produce beta-lactamase. Of the remaining 296 isolates, five (1.7% had penicillin MICs greater than or equal to 1 mg/L, 78 (26.3% had tetracycline MICs greater than or equal to 1 mg/L, 13 (4.4% had cefoxitin MICs greater than or equal to 1 mg/L and 43 (14.5% had erythromycin MICs greater than or equal to 1 mg/L. Two isolates (0.7% had high level tetracycline resistance with MICs greater than or equal to 16 mg/L. All N gonorrhoeae isolates were susceptible to ceftriaxone and to spectinomycin.

  1. Drinking, cannabis use and driving among Ontario students.

    Science.gov (United States)

    Adlaf, Edward M; Mann, Robert E; Paglia, Angela

    2003-03-04

    Little is known about the risk of injury among adolescents who drive after the use of alcohol or cannabis or ride in cars driven by drunk drivers. We examined data from self-administered interviews with 1846 students in grades 7 to 13 who participated in the 2001 Ontario Student Drug Use Survey about their experiences related to alcohol, cannabis and driving during the 12 months preceding the survey. In all, 31.9% of the students reported being a passenger in a car driven by a drunk driver; of the students in grades 10 to 13 who had a driver's licence, 15.1% reported driving within an hour after consuming 2 or more drinks, and 19.7% reported driving within an hour after using cannabis. Our study shows that a sizeable proportion of adolescents are exposed to alcohol- and drug-related driving risks.

  2. Videoconferencing and dietitian services in rural Ontario communities.

    Science.gov (United States)

    Stenlund, Diana

    2012-01-01

    Registered dietitians (RDs) are regulated health professionals in short supply in Ontario and throughout Canada. Projected workforce studies indicate the situation will likely worsen. Accessing these nutrition specialists is an even greater concern for residents living in rural or remote regions of the province. Smaller communities are increasingly using telehealth as a way to deliver health care services and to improve access to health care professionals. The adoption of interactive videoconferencing as a telehealth application is examined as an alternative approach for accessing RDs in rural communities. While valid reasons exist for implementing videoconferencing, other issues must be considered. These include costs, technological requirements, organizational readiness, and legal and ethical concerns. Future research must fully address the concept of videoconferencing in relation to the Canadian dietetic workforce and practice requirements.

  3. Operation of Reactor

    Institute of Scientific and Technical Information of China (English)

    1996-01-01

    3.1 Annual Report of SPR Operation Chu Shaochu Having overseen by National Nuclear Safety Administration and specialists, the reactor restarted up successfully after Safety renovation on April 16, 1996. In August 1996 the normal operation of SPR was approved by the authorities of Naitonal Nuclear Safety Administration. 1 Operation status In 1996, the reactor operated safely for 40 d and the energy released was about 137.3 MW·d. The operation status of SPR is shown in table 1. The reactor started up to higher power (power more than 1 MW) and lower power (for physics experiments) 4 times and 14 times respectively. Measurement of control rod efficiency and other measurement tasks were 2 times and 5 times respectively.

  4. Nuclear Rocket Engine Reactor

    CERN Document Server

    Lanin, Anatoly

    2013-01-01

    The development of a nuclear rocket engine reactor (NRER ) is presented in this book. The working capacity of an active zone NRER under mechanical and thermal load, intensive neutron fluxes, high energy generation (up to 30 MBT/l) in a working medium (hydrogen) at temperatures up to 3100 K is displayed. Design principles and bearing capacity of reactors area discussed on the basis of simulation experiments and test data of a prototype reactor. Property data of dense constructional, porous thermal insulating and fuel materials like carbide and uranium carbide compounds in the temperatures interval 300 - 3000 K are presented. Technological aspects of strength and thermal strength resistance of materials are considered. The design procedure of possible emergency processes in the NRER is developed and risks for their origination are evaluated. Prospects of the NRER development for pilotless space devices and piloted interplanetary ships are viewed.

  5. Thermionic Reactor Design Studies

    Energy Technology Data Exchange (ETDEWEB)

    Schock, Alfred

    1994-08-01

    Paper presented at the 29th IECEC in Monterey, CA in August 1994. The present paper describes some of the author's conceptual designs and their rationale, and the special analytical techniques developed to analyze their (thermionic reactor) performance. The basic designs, first published in 1963, are based on single-cell converters, either double-ended diodes extending over the full height of the reactor core or single-ended diodes extending over half the core height. In that respect they are similar to the thermionic fuel elements employed in the Topaz-2 reactor subsequently developed in the Soviet Union, copies of which were recently imported by the U.S. As in the Topaz-2 case, electrically heated steady-state performance tests of the converters are possible before fueling.

  6. An Overview of Reactor Concepts, a Survey of Reactor Designs.

    Science.gov (United States)

    1985-02-01

    Public Affairs Office and is releasaole to the National Technical Information Services (NTIS). At NTIS, it will be available to the general public...Reactors that use deu- terium (heavy water) as a coolant can use natural uranium as a fuel. The * Canadian reactor, CANDU , utilizes this concept...reactor core at the top and discharged at the Dotton while the reactor is in operation. The discharged fuel can then b inspected to see if it can De used

  7. Green tide: indoor marihuana cultivation and its impact on Ontario

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-07-01

    This paper discusses the apparent proliferation of marihuana grow-ops in Ontario over the last five years. Estimated revenues from indoor marihuana were detailed, as well as estimates of quantities of marihuana produced, forecasted trends and annual and weekly historical trends. The potential economic impact of this criminal activity was examined, with particular reference to increased police activities. The potential for fire and other human health risks included: exposure to mould associated with hydroponic cultivation and growth chemicals and higher concentrations of carbon dioxide and carbon monoxide. The socio-economic impact of grow ops were examined, with detailed estimates of law enforcement costs, insurance costs and costs to the justice system. Societal costs, such as environmental hazards, violence associated with organized crime, and the perceived threat to Ontario's children and communities were also outlined. Costs stemming from hydro theft were cited, including hydro repair and administration. Details of the bypass systems installed for hydro theft were also provided. It was concluded that it was unlikely that grow ops will be entirely eradicated. Measures that may limit the scope of grow ops included: developing avenues to increase effectiveness and efficiency of law enforcement approaches to grow ops, enhancing lines of communication and sharing of intelligence between police and other key stakeholders such as insurance companies, real estate agencies and banks and educating persons in the justice system on the issue of grow ops so that sentencing more accurately reflects the crime. It was recommended that lenient sentencing for marihuana possession and cultivation be re-examined. 70 refs., 12 tabs, 38 figs.

  8. Human exposure to soil contaminants in subarctic Ontario, Canada

    Directory of Open Access Journals (Sweden)

    Ellen Stephanie Reyes

    2015-05-01

    Full Text Available Background: Chemical contaminants in the Canadian subarctic present a health risk with exposures primarily occurring via the food consumption. Objective: Characterization of soil contaminants is needed in northern Canada due to increased gardening and agricultural food security initiatives and the presence of known point sources of pollution. Design: A field study was conducted in the western James Bay Region of Ontario, Canada, to examine the concentrations of polychlorinated biphenyls, dichlorodiphenyltrichloroethane and its metabolites (ΣDDT, other organochlorines, and metals/metalloids in potentially contaminated agriculture sites. Methods: Exposure pathways were assessed by comparing the estimated daily intake to acceptable daily intake values. Ninety soil samples were collected at random (grid sampling from 3 plots (A, B, and C in Fort Albany (on the mainland, subarctic Ontario, Canada. The contaminated-soil samples were analysed by gas chromatography with an electron capture detector or inductively coupled plasma mass spectrometer. Results: The range of ΣDDT in 90 soil samples was below the limit of detection to 4.19 mg/kg. From the 3 soil plots analysed, Plot A had the highest ΣDDT mean concentration of 1.12 mg/kg, followed by Plot B and Plot C which had 0.09 and 0.01 mg/kg, respectively. Concentrations of other organic contaminants and metals in the soil samples were below the limit of detection or found in low concentrations in all plots and did not present a human health risk. Conclusions: Exposure analyses showed that the human risk was below regulatory thresholds. However, the ΣDDT concentration in Plot A exceeded soil guidelines set out by the Canadian Council of Ministers of the Environment of 0.7 mg/kg, and thus the land should not be used for agricultural or recreational purposes. Both Plots B and C were below threshold limits, and this land can be used for agricultural purposes.

  9. Ontario's emergency department process improvement program: the experience of implementation.

    Science.gov (United States)

    Rotteau, Leahora; Webster, Fiona; Salkeld, Erin; Hellings, Chelsea; Guttmann, Astrid; Vermeulen, Marian J; Bell, Robert S; Zwarenstein, Merrick; Rowe, Brian H; Nigam, Amit; Schull, Michael J

    2015-06-01

    In recent years, Lean manufacturing principles have been applied to health care quality improvement efforts to improve wait times. In Ontario, an emergency department (ED) process improvement program based on Lean principles was introduced by the Ministry of Health and Long-Term Care as part of a strategy to reduce ED length of stay (LOS) and to improve patient flow. This article aims to describe the hospital-based teams' experiences during the ED process improvement program implementation and the teams' perceptions of the key factors that influenced the program's success or failure. A qualitative evaluation was conducted based on semistructured interviews with hospital implementation team members, such as team leads, medical leads, and executive sponsors, at 10 purposively selected hospitals in Ontario, Canada. Sites were selected based, in part, on their changes in median ED LOS following the implementation period. A thematic framework approach as used for interviews, and a standard thematic coding framework was developed. Twenty-four interviews were coded and analyzed. The results are organized according to participants' experience and are grouped into four themes that were identified as significantly affecting the implementation experience: local contextual factors, relationship between improvement team and support players, staff engagement, and success and sustainability. The results demonstrate the importance of the context of implementation, establishing strong relationships and communication strategies, and preparing for implementation and sustainability prior to the start of the project. Several key factors were identified as important to the success of the program, such as preparing for implementation, ensuring strong executive support, creation of implementation teams based on the tasks and outcomes of the initiative, and using multiple communication strategies throughout the implementation process. Explicit incorporation of these factors into the

  10. Direct costs of adult traumatic spinal cord injury in Ontario.

    Science.gov (United States)

    Munce, S E P; Wodchis, W P; Guilcher, S J T; Couris, C M; Verrier, M; Fung, K; Craven, B C; Jaglal, S B

    2013-01-01

    Retrospective economic analysis. To determine the total direct costs of publicly funded health care utilization for the three fiscal years 2003/04 to 2005/06 (1 April 2003 to 31 March 2004 to 1 April 2005 to 31 March 2006), from the time of initial hospitalization to 1 year after initial acute discharge among individuals with traumatic spinal cord injury (SCI). Ontario, Canada. Health system costs were calculated for 559 individuals with traumatic SCI (C1-T12 AIS A-D) for acute inpatient, emergency department, inpatient rehabilitation (that is, short-stay inpatient rehabilitation), complex continuing care (CCC) (i.e., long-stay inpatient rehabilitation), home care services, and physician visits in the year after index hospitalization. All care costs were calculated from the government payer's perspective, the Ontario Ministry of Health and Long-Term Care. Total direct costs of health care utilization in this traumatic SCI population (including the acute care costs of the index event and inpatient readmission in the following year after the index discharge) were substantial: $102 900 per person in 2003/04, $100 476 in 2004/05 and $123 674 in 2005/06 Canadian Dollars (2005 CDN $). The largest cost driver to the health care system was inpatient rehabilitation care. From 2003/04 to 2005/06, the average per person cost of rehabilitation was approximately three times the average per person costs of inpatient acute care. The high costs and long length of stay in inpatient rehabilitation are important system cost drivers, emphasizing the need to evaluate treatment efficacy and subsequent health outcomes in the inpatient rehabilitation setting.

  11. Variability in antibiotic use across Ontario acute care hospitals.

    Science.gov (United States)

    Tan, Charlie; Vermeulen, Marian; Wang, Xuesong; Zvonar, Rosemary; Garber, Gary; Daneman, Nick

    2017-02-01

    Antibiotic stewardship is a required organizational practice for Canadian acute care hospitals, yet data are scarce regarding the quantity and composition of antibiotic use across facilities. We sought to examine the variability, and risk-adjusted variability, in antibiotic use across acute care hospitals in Ontario, Canada's most populous province. Antibiotic purchasing data from IMS Health, previously demonstrated to correlate strongly with internal antibiotic dispensing data, were acquired for 129 Ontario hospitals from January to December 2014 and linked to patient day (PD) denominator data from administrative datasets. Hospital variation in DDDs/1000 PDs was determined for overall antibiotic use, class-specific use and six practices of clinical or ecological significance. Multivariable risk adjustment for hospital and patient characteristics was used to compare observed versus expected utilization. There was 7.4-fold variability in the quantity of antibiotic use across the 129 acute care hospitals, from 253 to 1873 DDDs/1000 PDs. Variation was evident within hospital subtypes, exceeded that explained by hospital and patient characteristics, and included wide variability in proportion of broad-spectrum antibiotics (IQR 36%-48%), proportion of fluoroquinolones among respiratory antibiotics (IQR 40%-62%), proportion of ciprofloxacin among urinary anti-infectives (IQR 44%-60%), proportion of antibiotics with highest risk for Clostridium difficile (IQR 29%-40%), proportion of 'reserved-use' antibiotics (IQR 0.8%-3.5%) and proportion of anti-pseudomonal antibiotics among antibiotics with Gram-negative coverage (IQR 26%-40%). There is extensive variability in antibiotic use, and risk-adjusted use, across acute care hospitals. This could motivate, focus and benchmark antibiotic stewardship efforts. © The Author 2016. Published by Oxford University Press on behalf of the British Society for Antimicrobial Chemotherapy. All rights reserved. For Permissions, please email

  12. Simulation of rapid ecological change in Lake Ontario

    Science.gov (United States)

    McKenna, James E.; Chalupnicki, Marc; Dittman, Dawn E.; Watkins, James M.

    2017-01-01

    Lower trophic level processes are integral to proper functioning of large aquatic ecosystems and have been disturbed in Lake Ontario by various stressors including exotic species. The invasion of benthic habitats by dreissenid mussels has led to systemic changes and native faunal declines. Size-dependent physiological rates, spatial differences and connectivity, competition, and differential population dynamics among invertebrate groups contributed to the change and system complexity. We developed a spatially explicit, individual-based mechanistic model of the benthic ecosystem in Lake Ontario, with coupling to the pelagic system, to examine ecosystem dynamics and effects of dreissenid mussel invasion and native fauna losses. Benthic organisms were represented by functional groups; filter-feeders (i.e., dreissenid mussels), surface deposit-feeders (e.g., native amphipod Diporeia spp.), and deposit-feeders (e.g., oligochaetes and other burrowers). The model was stable, represented ecological structure and function effectively, and reproduced observed effects of the mussel invasion. Two hypotheses for causes of Diporeia loss, competition or disease-like mortality, were tested. Simple competition for food did not explain observed declines in native surface deposit-feeders during the filter-feeder invasion. However, the elevated mortality scenario supports a disease-like cause for loss of the native amphipod, with population changes in various lake areas and altered benthic biomass transfers. Stabilization of mussel populations and possible recovery of the native, surface-deposit feeding amphipod were predicted. Although further research is required on forcing functions, model parameters, and natural conditions, the model provides a valuable tool to help managers understand the benthic system and plan for response to future disruptions.

  13. Oscillatory flow chemical reactors

    Directory of Open Access Journals (Sweden)

    Slavnić Danijela S.

    2014-01-01

    Full Text Available Global market competition, increase in energy and other production costs, demands for high quality products and reduction of waste are forcing pharmaceutical, fine chemicals and biochemical industries, to search for radical solutions. One of the most effective ways to improve the overall production (cost reduction and better control of reactions is a transition from batch to continuous processes. However, the reactions of interests for the mentioned industry sectors are often slow, thus continuous tubular reactors would be impractically long for flow regimes which provide sufficient heat and mass transfer and narrow residence time distribution. The oscillatory flow reactors (OFR are newer type of tube reactors which can offer solution by providing continuous operation with approximately plug flow pattern, low shear stress rates and enhanced mass and heat transfer. These benefits are the result of very good mixing in OFR achieved by vortex generation. OFR consists of cylindrical tube containing equally spaced orifice baffles. Fluid oscillations are superimposed on a net (laminar flow. Eddies are generated when oscillating fluid collides with baffles and passes through orifices. Generation and propagation of vortices create uniform mixing in each reactor cavity (between baffles, providing an overall flow pattern which is close to plug flow. Oscillations can be created by direct action of a piston or a diaphragm on fluid (or alternatively on baffles. This article provides an overview of oscillatory flow reactor technology, its operating principles and basic design and scale - up characteristics. Further, the article reviews the key research findings in heat and mass transfer, shear stress, residence time distribution in OFR, presenting their advantages over the conventional reactors. Finally, relevant process intensification examples from pharmaceutical, polymer and biofuels industries are presented.

  14. Perspectives on reactor safety

    Energy Technology Data Exchange (ETDEWEB)

    Haskin, F.E. [New Mexico Univ., Albuquerque, NM (United States). Dept. of Chemical and Nuclear Engineering; Camp, A.L. [Sandia National Labs., Albuquerque, NM (United States)

    1994-03-01

    The US Nuclear Regulatory Commission (NRC) maintains a technical training center at Chattanooga, Tennessee to provide appropriate training to both new and experienced NRC employees. This document describes a one-week course in reactor, safety concepts. The course consists of five modules: (1) historical perspective; (2) accident sequences; (3) accident progression in the reactor vessel; (4) containment characteristics and design bases; and (5) source terms and offsite consequences. The course text is accompanied by slides and videos during the actual presentation of the course.

  15. Reactor Materials Research

    Energy Technology Data Exchange (ETDEWEB)

    Van Walle, E

    2002-04-01

    The activities of SCK-CEN's Reactor Materials Research Department for 2001 are summarised. The objectives of the department are: (1) to evaluate the integrity and behaviour of structural materials used in nuclear power industry; (2) to conduct research to unravel and understand the parameters that determine the material behaviour under or after irradiation; (3) to contribute to the interpretation, the modelling of the material behaviour and to develop and assess strategies for optimum life management of nuclear power plant components. The programmes within the department are focussed on studies concerning (1) Irradiation Assisted Stress Corrosion Cracking (IASCC); (2) nuclear fuel; and (3) Reactor Pressure Vessel Steel.

  16. Fusion Reactor Materials

    Energy Technology Data Exchange (ETDEWEB)

    Decreton, M

    2000-07-01

    SCK-CEN's research and development programme on fusion reactor materials includes: (1) the study of the mechanical behaviour of structural materials under neutron irradiation (including steels, inconel, molybdenum, chromium); (2) the determination and modelling of the characteristics of irradiated first wall materials such as beryllium; (3) the detection of abrupt electrical degradation of insulating ceramics under high temperature and neutron irradiation; (4) the study of the dismantling and waste disposal strategy for fusion reactors.; (5) a feasibility study for the testing of blanket modules under neutron radiation. Main achievements in these topical areas in the year 1999 are summarised.

  17. High Flux Isotope Reactor (HFIR)

    Data.gov (United States)

    Federal Laboratory Consortium — The HFIR at Oak Ridge National Laboratory is a light-water cooled and moderated reactor that is the United States’ highest flux reactor-based neutron source. HFIR...

  18. Reactor operation environmental information document

    Energy Technology Data Exchange (ETDEWEB)

    Haselow, J.S.; Price, V.; Stephenson, D.E.; Bledsoe, H.W.; Looney, B.B.

    1989-12-01

    The Savannah River Site (SRS) produces nuclear materials, primarily plutonium and tritium, to meet the requirements of the Department of Defense. These products have been formed in nuclear reactors that were built during 1950--1955 at the SRS. K, L, and P reactors are three of five reactors that have been used in the past to produce the nuclear materials. All three of these reactors discontinued operation in 1988. Currently, intense efforts are being extended to prepare these three reactors for restart in a manner that protects human health and the environment. To document that restarting the reactors will have minimal impacts to human health and the environment, a three-volume Reactor Operations Environmental Impact Document has been prepared. The document focuses on the impacts of restarting the K, L, and P reactors on both the SRS and surrounding areas. This volume discusses the geology, seismology, and subsurface hydrology. 195 refs., 101 figs., 16 tabs.

  19. Reactor operation safety information document

    Energy Technology Data Exchange (ETDEWEB)

    1990-01-01

    The report contains a reactor facility description which includes K, P, and L reactor sites, structures, operating systems, engineered safety systems, support systems, and process and effluent monitoring systems; an accident analysis section which includes cooling system anomalies, radioactive materials releases, and anticipated transients without scram; a summary of onsite doses from design basis accidents; severe accident analysis (reactor core disruption); a description of operating contractor organization and emergency planning; and a summary of reactor safety evolution. (MB)

  20. Promoting the Everyday: Pro-Sharia Advocacy and Public Relations in Ontario, Canada's "Sharia Debate"

    National Research Council Canada - National Science Library

    Jennifer A Selby

    2013-01-01

    .... Instead, I argue that the "Sharia Debate" served as a catalyst for mainstream conservative Muslim groups in Ontario to develop public relations apparatuses that better facilitate the perspectives of everyday religious conservatives in the public sphere.

  1. Neoliberalism and Ontario Teachers’ Unions: A “Not-So” Common Sense Revolution

    Directory of Open Access Journals (Sweden)

    Duncan MacLellan

    2009-05-01

    Full Text Available This paper will critically analyze the degree to which the Ontario government, led by then Premier Mike Harris, embarked on a neoliberal agenda that led to a crisis in Ontario’s educational system. The period from 1995-2000 was one of the most contentious in Ontario’s educational history, and two pieces of legislation, The College of Teachers Act (Bill 31 and the Education Quality Improvement Act (Bill 160, pitted teacher unions, in particular, the Ontario Secondary School Teachers’ Federation (OSSTF and the Ontario English Catholic Teachers’ Association (OECTA, against the Harris government. Bill 160 led to a ten-day protest by teachers across Ontario, which signaled a dramatic shift in teacher and state relations that marked a crisis period in Ontario’s educational sector.

  2. Waterfowl breeding population survey: Ontario, Quebec, and New York: May 1996

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for Ontario, Quebec, and New York during 1996. The primary purpose of the survey is to...

  3. Waterfowl breeding population survey: Northern Saskatchewan, northern Manitoba and western Ontario: May-June 1959

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for northern Saskatchewan, northern Manitoba, and western Ontario during 1959. The...

  4. Pilot study: Waterfowl breeding population survey: Ontario, Quebec, and New York: May 1995

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for Ontario, Quebec, and New York during 1995. The primary purpose of the survey is to...

  5. Southern Ontario, Quebec, and New York: Waterfowl breeding population survey: 2000

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for Southern Ontario, Quebec, and New York during 2000. The primary purpose of the survey...

  6. Waterfowl breeding pair survey for western Ontario: May 27 through June 1, 1973

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for western Ontario during 1973. The primary purpose of the survey is to provide...

  7. Waterfowl breeding population survey: New York, Eastern Ontario, and Southern Quebec: 1999

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report summarizes the Waterfowl Breeding Population and Habitat Survey for New York, Eastern Ontario, and Southern Quebec during 1999. The primary purpose of...

  8. REACTOR FUEL ELEMENTS TESTING CONTAINER

    Science.gov (United States)

    Whitham, G.K.; Smith, R.R.

    1963-01-15

    This patent shows a method for detecting leaks in jacketed fuel elements. The element is placed in a sealed tank within a nuclear reactor, and, while the reactor operates, the element is sparged with gas. The gas is then led outside the reactor and monitored for radioactive Xe or Kr. (AEC)

  9. Nuclear Reactors and Technology

    Energy Technology Data Exchange (ETDEWEB)

    Cason, D.L.; Hicks, S.C. [eds.

    1992-01-01

    This publication Nuclear Reactors and Technology (NRT) announces on a monthly basis the current worldwide information available from the open literature on nuclear reactors and technology, including all aspects of power reactors, components and accessories, fuel elements, control systems, and materials. This publication contains the abstracts of DOE reports, journal articles, conference papers, patents, theses, and monographs added to the Energy Science and Technology Database during the past month. Also included are US information obtained through acquisition programs or interagency agreements and international information obtained through the International Energy Agency`s Energy Technology Data Exchange or government-to-government agreements. The digests in NRT and other citations to information on nuclear reactors back to 1948 are available for online searching and retrieval on the Energy Science and Technology Database and Nuclear Science Abstracts (NSA) database. Current information, added daily to the Energy Science and Technology Database, is available to DOE and its contractors through the DOE Integrated Technical Information System. Customized profiles can be developed to provide current information to meet each user`s needs.

  10. WATER BOILER REACTOR

    Science.gov (United States)

    King, L.D.P.

    1960-11-22

    As its name implies, this reactor utilizes an aqueous solution of a fissionable element salt, and is also conventional in that it contains a heat exchanger cooling coil immersed in the fuel. Its novelty lies in the utilization of a cylindrical reactor vessel to provide a critical region having a large and constant interface with a supernatant vapor region, and the use of a hollow sleeve coolant member suspended from the cover assembly in coaxial relation with the reactor vessel. Cool water is circulated inside this hollow coolant member, and a gap between its outer wall and the reactor vessel is used to carry off radiolytic gases for recombination in an external catalyst chamber. The central passage of the coolant member defines a reflux condenser passage into which the externally recombined gases are returned and condensed. The large and constant interface between fuel solution and vapor region prevents the formation of large bubbles and minimizes the amount of fuel salt carried off by water vapor, thus making possible higher flux densities, specific powers and power densities.

  11. MULTISTAGE FLUIDIZED BED REACTOR

    Science.gov (United States)

    Jonke, A.A.; Graae, J.E.A.; Levitz, N.M.

    1959-11-01

    A multistage fluidized bed reactor is described in which each of a number of stages is arranged with respect to an associated baffle so that a fluidizing gas flows upward and a granular solid downward through the stages and baffles, whereas the granular solid stopsflowing downward when the flow of fluidizing gas is shut off.

  12. Fusion reactor materials

    Energy Technology Data Exchange (ETDEWEB)

    none,

    1989-01-01

    This paper discuses the following topics on fusion reactor materials: irradiation, facilities, test matrices, and experimental methods; dosimetry, damage parameters, and activation calculations; materials engineering and design requirements; fundamental mechanical behavior; radiation effects; development of structural alloys; solid breeding materials; and ceramics.

  13. Integral Fast Reactor concept

    Energy Technology Data Exchange (ETDEWEB)

    Till, C.E.; Chang, Y.I.

    1986-01-01

    The Integral Fast Reactor (IFR) is an innovative LMR concept, being developed at Argonne National Laboratory, that fully exploits the inherent properties of liquid metal cooling and metallic fuel to achieve breakthroughs in economics and inherent safety. This paper describes key features and potential advantages of the IFR concept, technology development status, fuel cycle economics potential, and future development path.

  14. The First Reactor.

    Science.gov (United States)

    Department of Energy, Washington, DC.

    On December 2, 1942, in a racquet court underneath the West Stands of Stagg Field at the University of Chicago, a team of scientists led by Enrico Fermi created the first controlled, self-sustaining nuclear chain reaction. This updated and revised story of the first reactor (or "pile") is based on postwar interviews (as told to Corbin…

  15. Thermal Reactor Safety

    Energy Technology Data Exchange (ETDEWEB)

    1980-06-01

    Information is presented concerning fire risk and protection; transient thermal-hydraulic analysis and experiments; class 9 accidents and containment; diagnostics and in-service inspection; risk and cost comparison of alternative electric energy sources; fuel behavior and experiments on core cooling in LOCAs; reactor event reporting analysis; equipment qualification; post facts analysis of the TMI-2 accident; and computational methods.

  16. Chromatographic and Related Reactors.

    Science.gov (United States)

    1988-01-07

    special information about effects of surface heteroge- neity in the methanation reaction. Studies of an efficient multicolumn assembly for measuring...of organic basic catalysts such as pyridine and 4-methylpicoline. It was demonstrated that the chromatographic reactor gave special information about...Programmed Reaction to obtain special information about surface heterogeneity in the methanation reaction. Advantages of stopped flow over steady state

  17. New concepts for shaftless recycle reactors

    Energy Technology Data Exchange (ETDEWEB)

    Berty, J.M.; Berty, I.J.

    1987-01-01

    Berty Reaction Engineers, Ltd. (BREL) is developing two new laboratory recycle reactors, the ROTOBERTY and the TURBOBERTY. These new reactors are basically improved versions of the original Berty reactor. To understand why the reactors have the features that they do, it is first necessary to briefly review laboratory reactors in general and specifically the original Berty reactor.

  18. Validation of Six Short and Ultra-short Screening Instruments for Depression for People Living with HIV in Ontario: Results from the Ontario HIV Treatment Network Cohort Study

    DEFF Research Database (Denmark)

    Choi, Stephanie KY; Boyle, Eleanor; Burchell, Ann

    2015-01-01

    Objective Major depression affects up to half of people living with HIV. However, among HIV-positive patients, depression goes unrecognized 60–70% of the time in non-psychiatric settings. We sought to evaluate three screening instruments and their short forms to facilitate the recognition...... of current depression in HIV-positive patients attending HIV specialty care clinics in Ontario. Methods A multi-centre validation study was conducted in Ontario to examine the validity and accuracy of three instruments (the Center for Epidemiologic Depression Scale [CESD20], the Kessler Psychological...... Distress Scale [K10], and the Patient Health Questionnaire depression scale [PHQ9]) and their short forms (CESD10, K6, and PHQ2) in diagnosing current major depression among 190 HIV-positive patients in Ontario. Results from the three instruments and their short forms were compared to results from the gold...

  19. Brazilian multipurpose reactor

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2014-07-01

    The Brazilian Multipurpose Reactor (RMB) Project is an action of the Federal Government, through the Ministry of Science Technology and Innovation (MCTI) and has its execution under the responsibility of the Brazilian National Nuclear Energy Commission (CNEN). Within the CNEN, the project is coordinated by the Research and Development Directorate (DPD) and developed through research units of this board: Institute of Nuclear Energy Research (IPEN); Nuclear Engineering Institute (IEN); Centre for Development of Nuclear Technology (CDTN); Regional Center of Nuclear Sciences (CRCN-NE); and Institute of Radiation Protection and Dosimetry (IRD). The Navy Technological Center in Sao Paulo (CTMSP) and also the participation of other research centers, universities, laboratories and companies in the nuclear sector are important and strategic partnerships. The conceptual design and the safety analysis of the reactor and main facilities, related to nuclear and environmental licensing, are performed by technicians of the research units of DPD / CNEN. The basic design was contracted to engineering companies as INTERTHECNE from Brazil and INVAP from Argentine. The research units from DPD/CNEN are also responsible for the design verification on all engineering documents developed by the contracted companies. The construction and installation should be performed by specific national companies and international partnerships. The Nuclear Reactor RMB will be a open pool type reactor with maximum power of 30 MW and have the OPAL nuclear reactor of 20 MW, built in Australia and designed by INVAP, as reference. The RMB reactor core will have a 5x5 configuration, consisting of 23 elements fuels (EC) of U{sub 3}Si{sub 2} dispersion-type Al having a density of up to 3.5 gU/cm{sup 3} and enrichment of 19.75% by weight of {sup 23{sup 5}}U. Two positions will be available in the core for materials irradiation devices. The main objectives of the RMB Reactor and the other nuclear and radioactive

  20. Environmental Factors in an Ontario Community with Disparities in Colorectal Cancer Incidence

    OpenAIRE

    Sritharan, Jeavana; Kamaleswaran, Rishikesan; McFarlan, Ken; Lemonde, Manon; George, Clemon; Sanchez, Otto

    2014-01-01

    Objective: In Ontario, there are significant geographical disparities in colorectal cancer incidence. In particular, the northern region of Timiskaming has the highest incidence of colorectal cancer in Ontario while the southern region of Peel displays the lowest. We aimed to identify non-nutritional modifiable environmental factors in Timiskaming that may be associated with its diverging colorectal cancer incidence rates when compared to Peel. Methods: We performed a systematic review to ide...

  1. Differences in access to services in rural emergency departments of Quebec and Ontario.

    Directory of Open Access Journals (Sweden)

    Richard Fleet

    Full Text Available Rural emergency departments (EDs are important safety nets for the 20% of Canadians who live there. A serious problem in access to health care services in these regions has emerged. However, there are considerable geographic disparities in access to trauma center in Canada. The main objective of this project was to compare access to local 24/7 support services in rural EDs in Quebec and Ontario as well as distances to Levels 1 and 2 trauma centers.Rural EDs were identified through the Canadian Healthcare Association's Guide to Canadian Healthcare Facilities. We selected hospitals with 24/7 ED physician coverage and hospitalization beds that were located in rural communities. There were 26 rural EDs in Quebec and 62 in Ontario meeting these criteria. Data were collected from ministries of health, local health authorities, and ED statistics. Fisher's exact test, the t-test or Wilcoxon-Mann-Whitney test, were performed to compare rural EDs of Quebec and Ontario.All selected EDs of Quebec and Ontario agreed to participate in the study. The number of EDs visits was higher in Quebec than in Ontario (19 322 ± 6 275 vs 13 446 ± 8 056, p = 0.0013. There were no significant differences between Quebec and Ontario's local population and small town population density. Quebec's EDs have better access to advance imaging services such as CT scanner (77% vs 15%, p < .0001 and most the consultant support and ICU (92% vs 31%, p < .0001. Finally, more than 40% of rural EDs in Quebec and Ontario are more than 300 km away from Levels 1 and 2 trauma centers.Considering that Canada has a Universal health care system, the discrepancies between Quebec and Ontario in access to support services are intriguing. A nationwide study is justified to address this issue.

  2. Local Authorities’ contribution on Gastronomy Tourism Development: the case of Ontario, Canada

    OpenAIRE

    Karagiannis, Dimitris; METAXAS, Theodore

    2017-01-01

    The role of Local Government (LG) in achieving tourism development is extremely important. A characteristic example is the province of Ontario in Canada, which managed with the assistance of the Ministries of Tourism and Culture and with the cooperation of the private sector, to create an effective tourism development tool promote the region through its gastronomy - Ontario Culinary Tourism Alliance (OCTA), a non-profit, industry driven organization which leads the implementation of the provi...

  3. Source Water Protection Planning for Ontario First Nations Communities: Case Studies Identifying Challenges and Outcomes

    OpenAIRE

    Leslie Collins; Deborah McGregor; Stephanie Allen; Craig Murray; Chris Metcalfe

    2017-01-01

    After the Walkerton tragedy in 2000, where drinking water contamination left seven people dead and many suffering from chronic illness, the Province of Ontario, Canada implemented policies to develop Source Water Protection (SWP) plans. Under the Clean Water Act (2006), thirty-six regional Conservation Authorities were mandated to develop watershed-based SWP plans under 19 Source Protection Regions. Most First Nations in Ontario are outside of these Source Protection Regions and reserve lands...

  4. Prevalence of paratuberculosis in the dairy goat and dairy sheep industries in Ontario, Canada

    DEFF Research Database (Denmark)

    Bauman, Cathy A.; Jones-Bitton, Andria; Menzies, Paula;

    2016-01-01

    A cross-sectional study was undertaken (October 2010 to August 2011) to estimate the prevalence of paratuberculosis in the small ruminant dairy industries in Ontario, Canada. Blood and feces were sampled from 580 goats and 397 sheep (lactating and 2 y of age or older) that were randomly selected.......8%) and for dairy sheep was 48.3% (95% PI: 27.6% to 74.3%). These data indicate that a paratuberculosis control program for small ruminants is needed in Ontario....

  5. Modeling Chemical Reactors I: Quiescent Reactors

    CERN Document Server

    Michoski, C E; Schmitz, P G

    2010-01-01

    We introduce a fully generalized quiescent chemical reactor system in arbitrary space $\\vdim =1,2$ or 3, with $n\\in\\mathbb{N}$ chemical constituents $\\alpha_{i}$, where the character of the numerical solution is strongly determined by the relative scaling between the local reactivity of species $\\alpha_{i}$ and the local functional diffusivity $\\mathscr{D}_{ij}(\\alpha)$ of the reaction mixture. We develop an operator time-splitting predictor multi-corrector RK--LDG scheme, and utilize $hp$-adaptivity relying only on the entropy $\\mathscr{S}_{\\mathfrak{R}}$ of the reactive system $\\mathfrak{R}$. This condition preserves these bounded nonlinear entropy functionals as a necessarily enforced stability condition on the coupled system. We apply this scheme to a number of application problems in chemical kinetics; including a difficult classical problem arising in nonequilibrium thermodynamics known as the Belousov-Zhabotinskii reaction where we utilize a concentration-dependent diffusivity tensor $\\mathscr{D}_{ij}(...

  6. Alternative approaches to fusion. [reactor design and reactor physics for Tokamak fusion reactors

    Science.gov (United States)

    Roth, R. J.

    1976-01-01

    The limitations of the Tokamak fusion reactor concept are discussed and various other fusion reactor concepts are considered that employ the containment of thermonuclear plasmas by magnetic fields (i.e., stellarators). Progress made in the containment of plasmas in toroidal devices is reported. Reactor design concepts are illustrated. The possibility of using fusion reactors as a power source in interplanetary space travel and electric power plants is briefly examined.

  7. Preparing for open access : distribution rate order application to the Ontario Energy Board 1999-2000

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-12-07

    The Ontario Hydro Services Company (OHSC) Inc. filed an application with the Ontario Energy Board (OEB) requesting grant of an order approving the revenue requirements for the Company`s distribution business, including those for distribution in remote communities, for the years 1999 and 2000, up until the point of open access. The revenue requirement for 1999 is $701 million, for the year 2000 it is $640 million. OHSC is a successor company to Ontario Hydro and it will become operational in its new incarnation on April 1, 1999. This marks the beginning of regulation of OHSC`s distribution business by the OEB, following the restructuring the electricity industry in Ontario. Restructuring ended the monopoly position of Ontario Hydro and introduced competition to the generation and retailing sectors, and regulation to the transmission and distribution sectors of the industry. The document sets out the circumstances leading up to the restructuring of the industry, the unbundling of Ontario Hydro into separate generation, transmission and distribution companies, outlines the new regulatory framework and provides the justification for the revenue requirements.

  8. Reactor monitoring using antineutrino detectors

    Science.gov (United States)

    Bowden, N. S.

    2011-08-01

    Nuclear reactors have served as the antineutrino source for many fundamental physics experiments. The techniques developed by these experiments make it possible to use these weakly interacting particles for a practical purpose. The large flux of antineutrinos that leaves a reactor carries information about two quantities of interest for safeguards: the reactor power and fissile inventory. Measurements made with antineutrino detectors could therefore offer an alternative means for verifying the power history and fissile inventory of a reactor as part of International Atomic Energy Agency (IAEA) and/or other reactor safeguards regimes. Several efforts to develop this monitoring technique are underway worldwide.

  9. Reactor vessel support system. [LMFBR

    Science.gov (United States)

    Golden, M.P.; Holley, J.C.

    1980-05-09

    A reactor vessel support system includes a support ring at the reactor top supported through a box ring on a ledge of the reactor containment. The box ring includes an annular space in the center of its cross-section to reduce heat flow and is keyed to the support ledge to transmit seismic forces from the reactor vessel to the containment structure. A coolant channel is provided at the outside circumference of the support ring to supply coolant gas through the keyways to channels between the reactor vessel and support ledge into the containment space.

  10. Methanogenesis in Thermophilic Biogas Reactors

    DEFF Research Database (Denmark)

    Ahring, Birgitte Kiær

    1995-01-01

    Methanogenesis in thermophilic biogas reactors fed with different wastes is examined. The specific methanogenic activity with acetate or hydrogen as substrate reflected the organic loading of the specific reactor examined. Increasing the loading of thermophilic reactors stabilized the process...... as indicated by a lower concentration of volatile fatty acids in the effluent from the reactors. The specific methanogenic activity in a thermophilic pilot-plant biogas reactor fed with a mixture of cow and pig manure reflected the stability of the reactor. The numbers of methanogens counted by the most...... against Methanothrix soehngenii or Methanothrix CALS-I in any of the thermophilic biogas reactors examined. Studies using 2-14C-labeled acetate showed that at high concentrations (more than approx. 1 mM) acetate was metabolized via the aceticlastic pathway, transforming the methyl-group of acetate...

  11. Cancer risk factors and screening in First Nations in Ontario

    Directory of Open Access Journals (Sweden)

    Maegan V. Mazereeuw

    2017-06-01

    Full Text Available Introduction: A lack of identifiers in health administrative databases limits our understanding of the cancer burden in First Nations. This study compares cancer risk factors and screening between First Nations in Ontario (on and off reserve and non-Aboriginal Ontarians using two unique health surveys. Methods: We measured age-standardized prevalence estimates using the First Nations Regional Health Survey (RHS Phase 2, 2008/10 (for First Nations on reserve and the Canadian Community Health Survey (CCHS, 2007–2013 (for First Nations off reserve and non-Aboriginal Ontarians. We used prevalence rate ratios (RR and Pearson’s chisquare tests for differences in proportions to compare estimates between First Nations (on and off reserve and non-Aboriginal Ontarians. Results: A higher proportion of First Nation men, women and adolescents on reserve smoked (RR = 1.97, 2.78 and 7.21 respectively and were obese (RR = 1.73, 2.33 and 3.29 respectively compared to their non-Aboriginal counterparts. Similar patterns were observed for First Nations off reserve. Frequent binge drinking was also more prevalent among First Nation men and women living on reserve (RR = 1.28 and 2.22, respectively and off reserve (RR = 1.70 and 1.45, respectively than non-Aboriginal Ontarians. First Nation men and women on reserve were about half as likely to consume fruit at least twice per day and vegetables at least twice per day compared to non-Aboriginal men and women (RR = 0.53 and 0.54, respectively. Pap test uptake was similar across all groups, while First Nation women on reserve were less likely to have had a mammogram in the last five years than non-Aboriginal women (RR = 0.85. Conclusion: First Nations, especially those living on reserve, have an increased risk for cancer and other chronic diseases compared to non-Aboriginal Ontarians. These results provide evidence to support policies and programs to reduce the future burden of cancer and other chronic diseases in

  12. Understanding physiotherapists' roles in ontario primary health care teams.

    Science.gov (United States)

    Dufour, Sinéad Patricia; Lucy, S Deborah; Brown, Judith Belle

    2014-01-01

    Objectif : Comprendre les rôles des physiothérapeutes et comment ils sont appliqués au sein des équipes de fournisseurs de soins de santé primaires en Ontario. Méthodes : Suivant une méthode théorique à base empirique pratique, 12 physiothérapeutes pratiquant dans des équipes de soins de santé primaires de l'Ontario ont participé à 18 entrevues personnelles détaillées semi-structurées. Toutes les entrevues ont été enregistrées, transcrites verbatim et entrées ensuite dans NVIVO-8. Le codage a suivi trois stades analytiques progressifs et était de nature répétitive, guidé par une théorie à base empirique. On a créé un système explicatif. Résultats : Les physiothérapeutes négocient leur place au sein des équipes de soins de santé primaires en jouant cinq rôles interdépendants : (1) gestionnaire; (2) évaluateur; (3) collaborateur; (4) éducateur; (5) représentant. Ces cinq rôles subissent l'influence de trois strates contextuelles : (1) équipe interprofessionnelle; (2) communauté et population desservies; (3) structure organisationnelle et financement. Le mandat du Canada au niveau des soins de santé primaires (accès, équipe, information et vie saine) circonscrit les contextes qui agissent sur les rôles joués. Conclusions : Pour s'acquitter du mandat relatif aux soins de santé primaires, les physiothérapeutes jouent de multiples rôles qui reposent sur une perspective holistique générale de la santé dans le contexte d'une équipe interprofessionnelle basée sur la collaboration et de la communauté, en suivant une approche des soins éclairée par des éléments probants. Il semble y avoir de multiples façons d'intégrer avec succès les physiothérapeutes dans les équipes de soins de santé primaires, à condition que les rôles joués soient contextualisés et conformes au mandat relatif aux soins de santé primaires.

  13. Opportunities and barriers for a crop-based energy sector in Ontario

    Science.gov (United States)

    Klupfel, Ellen Joanne

    This study investigates the existing opportunities and barriers for expanding the crop-based energy sector in Ontario. The investigation takes place at a time when growing concerns about sustainability---environmental, social, and economic---are encouraging the exploration of alternatives to energy systems based on fossil fuels, and concerns around the future viability of rural communities are making agriculturally-based and rural-based energy production systems attractive to many. To explore opportunities and barriers for the crop-based energy sector, this thesis addresses the question: What is the political-economic context within which the crop-based energy sector operates in Ontario? Taking an institutional approach, the study involved 26 interviews with individuals whose organizations influence Ontario's crop-based energy sector (that includes the biofuels ethanol and biodiesel), developed a model outlining relationships between the crop-based energy sector and other sectors of the economy, as well as the state, and implemented a survey of Ontario Members of Provincial Parliament's perspectives on biofuels. This research examines the balance of power of knowledge, production, security, finance, and technology for Ontario's crop-based energy sector. The overall balance of power currently rests with the petroleum sector. Through force field analysis, the study also identifies the key opportunities and barriers for the growth and development of the biofuels sector. These opportunities include climate change and rural development agendas, and the barriers include the petroleum sector, cost of production, and some sectors of the state. A few overarching conclusions emerge from this research: (1) Change in Ontario's crop-based energy sector is driven foremost by political and economic forces; (2) Climate change is the most significant driving force for the development and expansion of Ontario's crop-based energy sector; (3) Production cost and resistance from the

  14. Compact fusion reactors

    CERN Document Server

    CERN. Geneva

    2015-01-01

    Fusion research is currently to a large extent focused on tokamak (ITER) and inertial confinement (NIF) research. In addition to these large international or national efforts there are private companies performing fusion research using much smaller devices than ITER or NIF. The attempt to achieve fusion energy production through relatively small and compact devices compared to tokamaks decreases the costs and building time of the reactors and this has allowed some private companies to enter the field, like EMC2, General Fusion, Helion Energy, Lawrenceville Plasma Physics and Lockheed Martin. Some of these companies are trying to demonstrate net energy production within the next few years. If they are successful their next step is to attempt to commercialize their technology. In this presentation an overview of compact fusion reactor concepts is given.

  15. MEANS FOR COOLING REACTORS

    Science.gov (United States)

    Wheeler, J.A.

    1957-11-01

    A design of a reactor is presented in which the fuel elements may be immersed in a liquid coolant when desired without the necessity of removing them from the reactor structure. The fuel elements, containing the fissionable material are in plate form and are disposed within spaced slots in a moderator material, such as graphite to form the core. Adjacent the core is a tank containing the liquid coolant. The fuel elements are mounted in spaced relationship on a rotatable shaft which is located between the core and the tank so that by rotation of the shaft the fuel elements may be either inserted in the slots in the core to sustain a chain reaction or immersed in the coolant.

  16. Integrated Microfluidic Reactors.

    Science.gov (United States)

    Lin, Wei-Yu; Wang, Yanju; Wang, Shutao; Tseng, Hsian-Rong

    2009-12-01

    Microfluidic reactors exhibit intrinsic advantages of reduced chemical consumption, safety, high surface-area-to-volume ratios, and improved control over mass and heat transfer superior to the macroscopic reaction setting. In contract to a continuous-flow microfluidic system composed of only a microchannel network, an integrated microfluidic system represents a scalable integration of a microchannel network with functional microfluidic modules, thus enabling the execution and automation of complicated chemical reactions in a single device. In this review, we summarize recent progresses on the development of integrated microfluidics-based chemical reactors for (i) parallel screening of in situ click chemistry libraries, (ii) multistep synthesis of radiolabeled imaging probes for positron emission tomography (PET), (iii) sequential preparation of individually addressable conducting polymer nanowire (CPNW), and (iv) solid-phase synthesis of DNA oligonucleotides. These proof-of-principle demonstrations validate the feasibility and set a solid foundation for exploring a broad application of the integrated microfluidic system.

  17. Reactor Neutrino Spectra

    OpenAIRE

    Hayes, A. C.; Vogel, Petr

    2016-01-01

    We present a review of the antineutrino spectra emitted from reactors. Knowledge of these spectra and their associated uncertainties is crucial for neutrino oscillation studies. The spectra used to date have been determined either by converting measured electron spectra to antineutrino spectra or by summing over all of the thousands of transitions that make up the spectra, using modern databases as input. The uncertainties in the subdominant corrections to β-decay plague both methods, and we ...

  18. REACTOR MODERATOR STRUCTURE

    Science.gov (United States)

    Greenstreet, B.L.

    1963-12-31

    A system for maintaining the alignment of moderator block structures in reactors is presented. Integral restraining grids are placed between each layer of blocks in the moderator structure, at the top of the uppermost layer, and at the bottom of the lowermost layer. Slots are provided in the top and bottom surfaces of the moderator blocks so as to provide a keying action with the grids. The grids are maintained in alignment by vertical guiding members disposed about their peripheries. (AEC)

  19. Ontario FIT - From poster child to industry crisis

    Energy Technology Data Exchange (ETDEWEB)

    Roeper, Uwe [ORTECH Consulting (Canada)

    2011-07-01

    Ortech is a consulting firm that provides engineering services to investors and developers in planning and operating solar, wind and water projects. This study discusses the issues involved in the renewable energy Feed-in Tariff (FIT) program in Ontario. Initially hailed as the poster child of innovative renewable programs in North America, the FIT program has been under increasing attack from political parties, anti wind groups and legal suits. The reason was the negative media coverage of noise, birdlife and health effects. Criticism was first voiced over health concerns and lack of consultation. Local governments and the legislature debated these issues and began to split along political lines over them. The lack of public support was because there was insufficient effort put into creating public awareness. Boosting grass-roots support by creating awareness is a recommendation of the paper, which also emphasises the need for a win-win strategy when the government is involved. It can be concluded that the FIT program has gone from poster child to industry crisis but has provided several learning opportunities along the way.

  20. Aphid Transmission of the Ontario Isolate of Plum Pox Virus.

    Science.gov (United States)

    Lowery, D Thomas; Vickers, Patricia M; Bittner, Lori A; Stobbs, Lorne W; Foottit, Robert G

    2015-10-01

    Utilization of timed virus acquisition access probes in studies of plum pox virus (PPV) transmission by aphids demonstrated that endemic species transmitted the virus readily from plum, Prunus domestica (L.) Batsch; peach, P. persica (L.); or dwarf flowering almond, P. glandulosa Thunberg., to peach seedlings. The green peach aphid, Myzus persicae (Sulzer), was shown to be the most efficient vector. Acquisition of virus by green peach aphids from infected peach leaves resulted in 18-28% infected peach seedlings, while aphids previously fed on infected leaves of plum transferred virus to 36% of peach seedlings. Although the spirea aphid, Aphis spiraecola (Patch), was a less efficient vector than M. persicae it is perhaps more important for the spread of PPV due to its greater abundance and occurrence earlier in the season when peach trees are thought to be more susceptible to infection. Virus transmission rates varied depending on the virus source and healthy test plant species. In contrast to many previous studies, aphid inoculation of the experimental host Nicotiana benthamiana Domin occurred at a low rate, never exceeding 4%. Acquisition of PPV by M. persicae from infected peach fruit was greatly reduced compared with acquisition from leaves. The results of this research indicate that the Ontario isolate of PPV-D is readily transmissible by aphids to peach and natural spread of the virus needs to be considered in future management or eradication programs.

  1. Physical activity in Ontario preschoolers: prevalence and measurement issues.

    Science.gov (United States)

    Obeid, Joyce; Nguyen, Thanh; Gabel, Leigh; Timmons, Brian W

    2011-04-01

    Early childhood is a critical period for the development of active living behaviours; however, very little is known about the physical activity levels of preschoolers from Canada. The objectives of this study were to (i) examine physical activity in a sample of Ontario preschoolers by using high-frequency accelerometry to determine activity and step counts; (ii) assess the relationship between step counts and physical activity; (iii) examine the influence of epoch length or sampling interval on physical activity; and (iv) compare measured physical activity to existing recommendations. Thirty 3- to 5-year-old children wore accelerometers to monitor habitual physical activity in 3-s epochs over a 7-day period. Preschoolers engaged in an average of 220 min of daily physical activity, 75 min of which were spent in moderate-to-vigorous physical activity (MVPA), and they accumulated 7529 ± 1539 steps·day(-1). Preschoolers who engaged in more MVPA also took more steps on a daily basis (r = 0.81, p physical activity per day for preschool-age children. Our data highlight important methodological considerations when measuring physical activity in preschoolers and the need for preschool-specific physical activity guidelines for Canadian children.

  2. Caribou nursery site habitat characteristics in two northern Ontario parks

    Directory of Open Access Journals (Sweden)

    Natasha L. Carr

    2007-04-01

    Full Text Available To prevent further range recession, habitat features essential to the life-history requisites of woodland caribou (Rangifer tarandus caribou such as calving and nursery sites need to be protected for the persistence of the species. Woodland caribou may minimize predation risk during calving by either spacing out or spacing away from predators in the forest to calve on islands, wetlands, or shorelines. Our objective was to determine the characteristics of shoreline habitats used as calving and nursery sites by female woodland caribou in northern Ontario. Detailed vegetation and other site characteristics were measured at nursery sites used by cow-calf pairs in Wabakimi and Woodland Caribou Provincial Parks for comparison with shoreline sites that were not used by caribou within each park. Differences in habitat variables selected by female caribou in the two study areas reflect broad ecoregional differences in vegetation and topography. In Wabakimi Provincial Park, understorey tree density and ground detection distance played key roles in distinguishing nursery sites from sites that were not used. In Woodland Caribou Provincial Park, groundcover vegetation and shrub density were important in the selection of nursery sites by female caribou. Generally, female caribou in both parks selected nursery sites with greater slope, lower shrub density but thicker groundcover vegetation, including greater lichen abundance, and higher densities of mature trees than shoreline sites that were not used. The identification of these important features for caribou nursery sites provides a basis for improving their protection in future management policies and legislation.

  3. Woodland caribou range occupancy in northwestern Ontario: past and present

    Directory of Open Access Journals (Sweden)

    G.D. Racey

    2000-04-01

    Full Text Available A zone of continuous woodland caribou (Rangifer tarandus caribou distribution is defined for northwestern Ontario. This zone establishes a benchmark for measuring the success of future management of habitat and conservation of populations. Inventory of key winter, summer and calving habitats reaffirms the concept of a dynamic mosaic of habitat tracts that supports caribou across the landscape. The historical range recession leading to this current distribution has been associated with resource development, fire and hunting activities over the past 150 years, and numerous attempts at conservation over the last 70 years. The decline was apparently phased according to several periods of development activity: i early exploitation in the early to mid-1800s; ii isolation and extirpation of southern populations due to rapid changes in forest use and access between 1890 and 1930; and iii further loss of the southernmost herds due to forest harvesting of previously inaccessible areas since the 1950s. Lessons learned from history support current conservation measures to manage caribou across broad landscapes, protect southern herds, maintain caribou habitat as part of continuous range, maintain large contiguous tracts of older forest and ensure connectivity between habitat components.

  4. Science-seeking behaviour of Conservation Authorities in Ontario.

    Science.gov (United States)

    Sheikheldin, Gussai; Krantzberg, Gail; Schaefer, Karl

    2010-05-01

    The communication of science to science users is evolving to an approach that translates knowledge to targeted audiences. Under this evolution, knowledge brokers play an increasingly important role and users help 'pull' the required science to meet a policy or management imperative. To do this effectively, more insight is required into the knowledge seeking behaviour of science users and practitioners. The findings from a series of interviews that identify the science needs of Ontario's Conservation Authorities (CAs) are presented. Results indicate that emerging functions, such as source water protection and integrated water resource planning, require more science input than mature functions. Senior CA officials view personal communication with their knowledgeable staff as the most used, accessible, trustworthy, relevant, shared, and preferable source of science information. While the internet and media were considered highly accessible, they were not viewed as trustworthy. We found no relationship between CA size and science use. Further research is needed to identify where junior and intermediate CA staff obtain their science knowledge from and whether this varies as a function of CA size. Our findings will be of interest to both policy/program communities and science providers.

  5. Traditional Knowledge: Considerations for Protecting Water in Ontario

    Directory of Open Access Journals (Sweden)

    Deborah McGregor

    2012-12-01

    Full Text Available In Canada, the water crisis increasingly felt around the world is being experienced primarily in small, usually Indigenous, communities. At the heart of this issue lies an ongoing struggle to have Indigenous voices heard in the decision-making processes that affect their lives, lands, and waters. As part of ancient systems of Traditional Knowledge (TK, Indigenous people bear the knowledge and the responsibility to care for the waters upon which they depend for survival. A series of internationally developed documents has supported Indigenous peoples’ calls for increased recognition of the importance of TK in resolving environmental crises, including those involving water. Ontario provincial and Canadian federal governments have been developing legislative and regulatory documents to help fend off further water-related catastrophes within their jurisdictions. Despite such efforts, a number of barriers to the successful and appropriate involvement of TK in water management remain. Based on years of community-based and policy-related research with First Nations people involved in water-related undertakings, this article highlights progress made to date, and provides Indigenous viewpoints on what further steps need to be taken. Key among these steps are the need to restore and maintain Indigenous access to traditional territories and ways of life, and the requirement for mutually respectful collaboration between TK and Western science.

  6. Linking traditional knowledge and environmental practice in Ontario.

    Science.gov (United States)

    McGregor, Deborah

    2009-01-01

    Beginning in the late 1980s with the release of Our Common Future by the World Commission on Environment and Development, followed by the development of international accords such as the 1992 Convention on Biological Diversity, international pressure to resolve Indigenous rights issues has been steadily mounting. Successive Canadian governments have been striving increasingly to recognize and incorporate Aboriginal traditional knowledge into resource management planning. Following more than a decade of such efforts, the question of how to achieve such incorporation appropriately remains inadequately answered. This essay contributes to the resolution of this issue by first clarifying some key differences between Aboriginal and non-Aboriginal definitions of "traditional knowledge." Then, three Ontario case studies are briefly described that highlight the most and least successful aspects of previous undertakings. Among the lessons learned are the need to value traditional knowledge on a par with Western science while recognizing the particular capabilities of each system, and the requirement that Aboriginal peoples and their knowledge participate on a mutually respectful basis.

  7. BOILER-SUPERHEATED REACTOR

    Science.gov (United States)

    Heckman, T.P.

    1961-05-01

    A nuclear power reactor of the type in which a liquid moderator-coolant is transformed by nuclear heating into a vapor that may be used to drive a turbo- generator is described. The core of this reactor comprises a plurality of freely suspended tubular fuel elements, called fuel element trains, within which nonboiling pressurized liquid moderator-coolant is preheated and sprayed through orifices in the walls of the trains against the outer walls thereof to be converted into vapor. Passage of the vapor ovcr other unwetted portions of the outside of the fuel elements causes the steam to be superheated. The moderatorcoolant within the fuel elements remains in the liqUid state, and that between the fuel elements remains substantiaily in the vapor state. A unique liquid neutron-absorber control system is used. Advantages expected from the reactor design include reduced fuel element failure, increased stability of operation, direct response to power demand, and circulation of a minimum amount of liquid moderatorcoolant. (A.G.W.)

  8. The OPAL reactor

    Energy Technology Data Exchange (ETDEWEB)

    Miller, R.; Irwin, T. [Australian Nuclear Science and Technology Organisation, Sydney (Australia); Ordonez, J.P. [INVAP SE, Bariloche (Argentina)

    2007-07-01

    The project to provide a replacement for Australia's HIFAR reactor began with governmental approval in September 1997 and reached its latest milestone with the achievement of the first full power operation of the OPAL reactor in November 2006. OPAL is a pool-type reactor with a thermal power of 20 MW and a fuel enrichment maximum of 20 per cent. This has been a successful project for both ANSTO (Australian Nuclear Science and Technology Organisation) and the contractor INVAP SE. This project was characterised by extensive interaction with the project's stake-holders during project definition and the use of a performance-based turnkey contract which gave the contractor the maximum opportunity to optimise the design to achieve performance and cost effectiveness. The contactor provided significant in-house resources as well as capacity to manage an international team of suppliers and sub-contractors. A key contributor to the project's successful outcomes has been the development and maintenance of an excellent working relationship between ANSTO and INVAP project teams. Commissioning was undertaken in accordance with the IAEA recommended stages. This paper presents the approaches used to define the project requirements, to choose the supplier and to deliver the project. The main results of hot commissioning are reviewed and the problems encountered examined. Operational experience since hot commissioning is also reviewed.

  9. Nuclear research reactors in Brazil

    Energy Technology Data Exchange (ETDEWEB)

    Cota, Anna Paula Leite; Mesquita, Amir Zacarias, E-mail: aplc@cdtn.b, E-mail: amir@cdtn.b [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil)

    2011-07-01

    The rising concerns about global warming and energy security have spurred a revival of interest in nuclear energy, giving birth to a 'nuclear power renaissance' in several countries in the world. Particularly in Brazil, in the recent years, the nuclear power renaissance can be seen in the actions that comprise its nuclear program, summarily the increase of the investments in nuclear research institutes and the government target to design and build the Brazilian Multipurpose research Reactor (BMR). In the last 50 years, Brazilian research reactors have been used for training, for producing radioisotopes to meet demands in industry and nuclear medicine, for miscellaneous irradiation services and for academic research. Moreover, the research reactors are used as laboratories to develop technologies in power reactors, which are evaluated today at around 450 worldwide. In this application, those reactors become more viable in relation to power reactors by the lowest cost, by the operation at low temperatures and, furthermore, by lower demand for nuclear fuel. In Brazil, four research reactors were installed: the IEA-R1 and the MB-01 reactors, both at the Instituto de Pesquisas Energeticas Nucleares (IPEN, Sao Paulo); the Argonauta, at the Instituto de Engenharia Nuclear (IEN, Rio de Janeiro) and the IPR-R1 TRIGA reactor, at the Centro de Desenvolvimento da Tecnologia Nuclear (CDTN, Belo Horizonte). The present paper intends to enumerate the characteristics of these reactors, their utilization and current academic research. Therefore, through this paper, we intend to collaborate on the BMR project. (author)

  10. Nuclear research reactors in Brazil

    Energy Technology Data Exchange (ETDEWEB)

    Cota, Anna Paula Leite; Mesquita, Amir Zacarias, E-mail: aplc@cdtn.b, E-mail: amir@cdtn.b [Centro de Desenvolvimento da Tecnologia Nuclear (CDTN/CNEN-MG), Belo Horizonte, MG (Brazil)

    2011-07-01

    The rising concerns about global warming and energy security have spurred a revival of interest in nuclear energy, giving birth to a 'nuclear power renaissance' in several countries in the world. Particularly in Brazil, in the recent years, the nuclear power renaissance can be seen in the actions that comprise its nuclear program, summarily the increase of the investments in nuclear research institutes and the government target to design and build the Brazilian Multipurpose research Reactor (BMR). In the last 50 years, Brazilian research reactors have been used for training, for producing radioisotopes to meet demands in industry and nuclear medicine, for miscellaneous irradiation services and for academic research. Moreover, the research reactors are used as laboratories to develop technologies in power reactors, which are evaluated today at around 450 worldwide. In this application, those reactors become more viable in relation to power reactors by the lowest cost, by the operation at low temperatures and, furthermore, by lower demand for nuclear fuel. In Brazil, four research reactors were installed: the IEA-R1 and the MB-01 reactors, both at the Instituto de Pesquisas Energeticas Nucleares (IPEN, Sao Paulo); the Argonauta, at the Instituto de Engenharia Nuclear (IEN, Rio de Janeiro) and the IPR-R1 TRIGA reactor, at the Centro de Desenvolvimento da Tecnologia Nuclear (CDTN, Belo Horizonte). The present paper intends to enumerate the characteristics of these reactors, their utilization and current academic research. Therefore, through this paper, we intend to collaborate on the BMR project. (author)

  11. Spatial extent and dissipation of the deep chlorophyll layer in Lake Ontario during the Lake Ontario lower foodweb assessment, 2003 and 2008

    Science.gov (United States)

    Watkins, J. M.; Weidel, Brian M.; Rudstam, L. G.; Holek, K. T.

    2014-01-01

    Increasing water clarity in Lake Ontario has led to a vertical redistribution of phytoplankton and an increased importance of the deep chlorophyll layer in overall primary productivity. We used in situ fluorometer profiles collected in lakewide surveys of Lake Ontario in 2008 to assess the spatial extent and intensity of the deep chlorophyll layer. In situ fluorometer data were corrected with extracted chlorophyll data using paired samples from Lake Ontario collected in August 2008. The deep chlorophyll layer was present offshore during the stratified conditions of late July 2008 with maximum values from 4–20 μg l−1 corrected chlorophyll a at 10 to 17 m depth within the metalimnion. Deep chlorophyll layer was closely associated with the base of the thermocline and a subsurface maximum of dissolved oxygen, indicating the feature's importance as a growth and productivity maximum. Crucial to the deep chlorophyll layer formation, the photic zone extended deeper than the surface mixed layer in mid-summer. The layer extended through most of the offshore in July 2008, but was not present in the easternmost transect that had a deeper surface mixed layer. By early September 2008, the lakewide deep chlorophyll layer had dissipated. A similar formation and dissipation was observed in the lakewide survey of Lake Ontario in 2003.

  12. Total Revenue and Expenses for Provincially Assisted Universities of Ontario for the Fiscal Year Ended April 30, 1976. Report to the Council of Ontario Universities.

    Science.gov (United States)

    Council of Ontario Universities, Toronto.

    Financial data are presented here for Ontario's twenty universities: Brock, Carleton, Guelph, Lakehead, Laurentian, Algoma, Nipissing, Hearst, McMaster, Oise, Ottawa, Queen's, Ryerson, Toronto, Trent, Waterloo, Western, Wilfrid Laurier, Windsor, and York. Contents include summary tables operating expenses by object of expense and by functional…

  13. Source Water Protection Planning for Ontario First Nations Communities: Case Studies Identifying Challenges and Outcomes

    Directory of Open Access Journals (Sweden)

    Leslie Collins

    2017-07-01

    Full Text Available After the Walkerton tragedy in 2000, where drinking water contamination left seven people dead and many suffering from chronic illness, the Province of Ontario, Canada implemented policies to develop Source Water Protection (SWP plans. Under the Clean Water Act (2006, thirty-six regional Conservation Authorities were mandated to develop watershed-based SWP plans under 19 Source Protection Regions. Most First Nations in Ontario are outside of these Source Protection Regions and reserve lands are under Federal jurisdiction. This paper explores how First Nations in Ontario are attempting to address SWP to improve drinking water quality in their communities even though these communities are not part of the Ontario SWP framework. The case studies highlight the gap between the regulatory requirements of the Federal and Provincial governments and the challenges for First Nations in Ontario from lack of funding to implement solutions to address the threats identified in SWP planning. This analysis of different approaches taken by Ontario First Nations shows that the Ontario framework for SWP planning is not an option for the majority of First Nations communities, and does not adequately address threats originating on reserve lands. First Nations attempting to address on-reserve threats to drinking water are using a variety of resources and approaches to develop community SWP plans. However, a common theme of all the cases surveyed is a lack of funding to support implementing solutions for the threats identified by the SWP planning process. Federal government initiatives to address the chronic problem of boil water advisories within Indigenous communities do not recognize SWP planning as a cost-effective tool for improving drinking water quality.

  14. Thermionic Reactor Design Studies

    Energy Technology Data Exchange (ETDEWEB)

    Schock, Alfred

    1994-06-01

    During the 1960's and early 70's the author performed extensive design studies, analyses, and tests aimed at thermionic reactor concepts that differed significantly from those pursued by other investigators. Those studies, like most others under Atomic Energy Commission (AEC and DOE) and the National Aeronautics and Space Administration (NASA) sponsorship, were terminated in the early 1970's. Some of this work was previously published, but much of it was never made available in the open literature. U.S. interest in thermionic reactors resumed in the early 80's, and was greatly intensified by reports about Soviet ground and flight tests in the late 80's. This recent interest resulted in renewed U.S. thermionic reactor development programs, primarily under Department of Defense (DOD) and Department of Energy (DOE) sponsorship. Since most current investigators have not had an opportunity to study all of the author's previous work, a review of the highlights of that work may be of value to them. The present paper describes some of the author's conceptual designs and their rationale, and the special analytical techniques developed to analyze their performance. The basic designs, first published in 1963, are based on single-cell converters, either double-ended diodes extending over the full height of the reactor core or single-ended diodes extending over half the core height. In that respect they are similar to the thermionic fuel elements employed in the Topaz-2 reactor subsequently developed in the Soviet Union, copies of which were recently imported by the U.S. As in the Topaz-2 case, electrically heated steady-state performance tests of the converters are possible before fueling. Where the author's concepts differed from the later Topaz-2 design was in the relative location of the emitter and the collector. Placing the fueled emitter on the outside of the cylindrical diodes permits much higher axial conductances to reduce ohmic

  15. New reactors for laboratory studies

    Energy Technology Data Exchange (ETDEWEB)

    Berty, J.M.

    1978-02-01

    Recent developments in design of laboratory and bench-scale reactors reflect mostly the developments in reaction engineering; that is the improved understanding of physical and chemical rate limiting processes, their interactions, and their effects on commercial-scale reactor performance. Whether a laboratory reactor is used to study the fundamentals of a commercial process or for pure scientific interest, it is important to know what physical or chemical process is limiting or influencing the rate and selectivity. To clarify this, a definition is required of the regime where physical influences exist, and study the intrinsic kinetics at conditions where physical processes do not affect the rate. Reactors are illustrated whose design was influenced by the above considerations. These reactors produce results which are independent of the reactors in which they were measured, and which can be scaled up with up-to-date reaction engineering techniques.

  16. Spiral-shaped disinfection reactors

    KAUST Repository

    Ghaffour, Noreddine

    2015-08-20

    This disclosure includes disinfection reactors and processes for the disinfection of water. Some disinfection reactors include a body that defines an inlet, an outlet, and a spiral flow path between the inlet and the outlet, in which the body is configured to receive water and a disinfectant at the inlet such that the water is exposed to the disinfectant as the water flows through the spiral flow path. Also disclosed are processes for disinfecting water in such disinfection reactors.

  17. Turning points in reactor design

    Energy Technology Data Exchange (ETDEWEB)

    Beckjord, E.S.

    1995-09-01

    This article provides some historical aspects on nuclear reactor design, beginning with PWR development for Naval Propulsion and the first commercial application at Yankee Rowe. Five turning points in reactor design and some safety problems associated with them are reviewed: (1) stability of Dresden-1, (2) ECCS, (3) PRA, (4) TMI-2, and (5) advanced passive LWR designs. While the emphasis is on the thermal-hydraulic aspects, the discussion is also about reactor systems.

  18. Acceptability of reactors in space

    Energy Technology Data Exchange (ETDEWEB)

    Buden, D.

    1981-04-01

    Reactors are the key to our future expansion into space. However, there has been some confusion in the public as to whether they are a safe and acceptable technology for use in space. The answer to these questions is explored. The US position is that when reactors are the preferred technical choice, that they can be used safely. In fact, it dies not appear that reactors add measurably to the risk associated with the Space Transportation System.

  19. Hydrogen Production in Fusion Reactors

    OpenAIRE

    Sudo, S.; Tomita, Y.; Yamaguchi, S.; Iiyoshi, A.; Momota, H; Motojima, O.; Okamoto, M.; Ohnishi, M.; Onozuka, M; Uenosono, C.

    1993-01-01

    As one of methods of innovative energy production in fusion reactors without having a conventional turbine-type generator, an efficient use of radiation produced in a fusion reactor with utilizing semiconductor and supplying clean fuel in a form of hydrogen gas are studied. Taking the candidates of reactors such as a toroidal system and an open system for application of the new concepts, the expected efficiency and a concept of plant system are investigated.

  20. Fast reactor programme in India

    Indian Academy of Sciences (India)

    P Chellapandi; P R Vasudeva Rao; Prabhat Kumar

    2015-09-01

    Role of fast breeder reactor (FBR) in the Indian context has been discussed with appropriate justification. The FBR programme since 1985 till 2030 is highlighted focussing on the current status and future direction of fast breeder test reactor (FBTR), prototype fast breeder reactor (PFBR) and FBR-1 and 2. Design and technological challenges of PFBR and design and safety targets with means to achieve the same are the major highlights of this paper.

  1. Structure and characteristics of community-based multidisciplinary wound care teams in Ontario: an environmental scan.

    Science.gov (United States)

    Abrahamyan, Lusine; Wong, Josephine; Pham, Ba'; Trubiani, Gina; Carcone, Steven; Mitsakakis, Nicholas; Rosen, Laura; Rac, Valeria E; Krahn, Murray

    2015-01-01

    Multidisciplinary team approach is an essential component of evidence-based wound management in the community. The objective of this study was to identify and describe community-based multidisciplinary wound care teams in Ontario. For the study, a working definition of a multidisciplinary wound care team was developed, and a two-phase field evaluation was conducted. In phase I, a systematic survey with three search strategies (environmental scan) was conducted to identify all multidisciplinary wound care teams in Ontario. In phase II, the team leads were surveyed about the service models of the teams. We identified 49 wound care teams in Ontario. The highest ratio of Ontario seniors to wound team within each Ontario health planning region was 82,358:1; the lowest ratio was 14,151:1. Forty-four teams (90%) participated in the survey. The majority of teams existed for at least 5 years, were established as hospital outpatient clinics, and served patients with chronic wounds. Teams were heterogeneous in on-site capacity of specialized diagnostic testing and wound treatment, team size, and patient volume. Seventy-seven percent of teams had members from three or more disciplines. Several teams lacked essential disciplines. More research is needed to identify optimal service models leading to improved patient outcomes.

  2. Sexual difference in mercury concentrations of lake trout (Salvelinus namaycush) from Lake Ontario

    Science.gov (United States)

    Madenjian, C.P.; Keir, M.J.; Whittle, D.M.

    2011-01-01

    We determined total mercury (Hg) concentrations in 50 female lake trout (Salvelinus namaycush) and 69 male lake trout from Lake Ontario (Ontario, Canada and New York, United States). Results showed that, on average, males were 8% higher in Hg concentration than females in Lake Ontario. We also used bioenergetics modeling to determine whether a sexual difference in gross growth efficiency (GGE) could explain the observed sexual difference in Hg concentrations. According to the bioenergetics modeling results, male GGE was about 3% higher than female GGE, on average. Although the bioenergetics modeling could not explain the higher Hg concentrations exhibited by the males, a sexual difference in GGE remained a plausible explanation for the sexual difference in Hg concentrations of the lake trout. In an earlier study, male lake trout from Lake Ontario were found to be 22% higher in polychlorinated biphenyl (PCB) concentration than females from Lake Ontario. Thus, although males were higher in both Hg and PCB concentrations, the degree of the sexual difference in concentration varied between the two contaminants. Further research on sexual differences in Hg excretion rates and Hg direct uptake rates may be needed to resolve the disparity in results between the two contaminants.

  3. Sensitivity of GRACE-derived estimates of groundwater-level changes in southern Ontario, Canada

    Science.gov (United States)

    Hachborn, Ellen; Berg, Aaron; Levison, Jana; Ambadan, Jaison Thomas

    2017-06-01

    Amidst changing climates, understanding the world's water resources is of increasing importance. In Ontario, Canada, low water conditions are currently assessed using only precipitation and watershed-based stream gauges by the Conservation Authorities in Ontario and the Ministry of Natural Resources and Forestry. Regional groundwater-storage changes in Ontario are not currently measured using satellite data by research institutes. In this study, contributions from the Gravity Recovery and Climate Experiment (GRACE) data are compared to a hydrogeological database covering southern Ontario from 2003 to 2013, to determine the suitability of GRACE total water storage estimates for monitoring groundwater storage in this location. Terrestrial water storage data from GRACE were used to determine monthly groundwater storage (GWS) anomaly values. GWS values were also determined by multiplying groundwater-level elevations (from the Provincial Groundwater Monitoring Network wells) by specific yield. Comparisons of GRACE-derived GWS to well-based GWS data determined that GRACE is sufficiently sensitive to obtain a meaningful signal in southern Ontario. Results show that GWS values produced by GRACE are useful for identifying regional changes in groundwater storage in areas with limited available hydrogeological characterization data. Results also indicate that GRACE may have an ability to forecast changes in groundwater storage, which will become useful when monitoring climate shifts in the near future.

  4. Canadian federalism and the Canadian health care program: a comparison of Ontario and Quebec.

    Science.gov (United States)

    Palley, H A

    1987-01-01

    The Quebec and Ontario health insurance and health service delivery systems, developed within the parameters of federal regulations and national financial subsidies, provide generally universal and comprehensive basic hospital and medical benefits and increasingly provide for the delivery of long-term care services. Within a framework of cooperative federalism, the health care systems of Ontario and Quebec have developed uniquely. In terms of vital statistics, the health of Ontario and Quebec residents generally is comparable. In viewing expenditures, Quebec has a more clearly articulated plan for providing accessible services to low-income persons and for integrating health and social services, although it has faced some difficulties in seeking to achieve the latter goal. Its plans for decentralized services are counter-balanced by a strong provincial role in health policy decision-making. Quebec's political culture also allows the province to play a stronger role in hospital planning and in the regulation of physician income than one finds in Ontario. These political dynamics allow Quebec an advantage in control of costs. In Ontario, in spite of some recent setbacks, physician interests and hospital sector interests play a more active role in health system bargaining and are usually able to influence remuneration and resource allocation decisions more than physician interests and hospital sector interests in Quebec.

  5. The effectiveness of a regulatory strategy in containing hospital costs. The Ontario experience, 1967-1981.

    Science.gov (United States)

    Detsky, A S; Stacey, S R; Bombardier, C

    1983-07-21

    This study documents the increases in real inputs (e.g., labor and equipment) employed in Ontario's hospital sector between 1968 and 1981--a period of universal government-financed hospital insurance and a government regulatory strategy involving global budgeting. Total expenditures in Ontario increased by only 16 per cent in terms of real inputs, as compared with an increase of 101 per cent in the United States. Real inputs per patient-day increased at a mean annual rate of 0.68 per cent in Ontario versus 5.19 per cent in the United States (P less than 0.001). Real inputs per admission decreased at a mean annual rate of 1.12 per cent in Ontario, as compared with an increase of 4.15 per cent in the United States (P less than 0.0001). We conclude that regulation can contain the growth of real inputs employed in the hospital sector even in the face of an incentive structure that does not promote cost consciousness on the part of patients or physicians. Although the effect of this strategy on the quality of care is unknown, so far it appears to have been politically acceptable in Ontario.

  6. Neutrino Oscillation Studies with Reactors

    CERN Document Server

    Vogel, Petr; Zhang, Chao

    2015-01-01

    Nuclear reactors are one of the most intense, pure, controllable, cost-effective, and well-understood sources of neutrinos. Reactors have played a major role in the study of neutrino oscillations, a phenomenon that indicates that neutrinos have mass and that neutrino flavors are quantum mechanical mixtures. Over the past several decades reactors were used in the discovery of neutrinos, were crucial in solving the solar neutrino puzzle, and allowed the determination of the smallest mixing angle $\\theta_{13}$. In the near future, reactors will help to determine the neutrino mass hierarchy and to solve the puzzling issue of sterile neutrinos.

  7. Physical and psychological determinants of injury in Ontario forest firefighters.

    Science.gov (United States)

    Gordon, H; Larivière, M

    2014-12-01

    Forest firefighters are faced with multiple physical and psychological challenges as a result of their duties. Little is known about the determinants of injury among these workers. The Ontario Ministry of Natural Resources (OMNR) Aviation, Forest Fire and Emergency Services (AFFES) records detailed information on two mutually exclusive types of workplace injury: First aid (self-reported) and Workplace Safety Insurance Board (WSIB, i.e. received medical attention). To identify the contributions of physical and psychological factors on the likelihood of injury among forest firefighters. Participants were male and female forest firefighters aged between 18 and 65. Data were collected using two self-administered instruments: The NEO Personality Inventory and the Job Stress Survey. Secondary data were collected from the OMNR AFFES and data were analysed by way of multivariate statistical procedures. There were 252 participants. Those who were older, had a history of injury, had high scores for the personality construct of Neuroticism or low scores for the Openness construct were significantly more likely to incur a first aid injury, while those with high experience levels were significantly less likely to incur injury (P < 0.05). High job stress was the only significant predictor of WSIB injury (P < 0.05). First aid and WSIB injuries in the OMNR AFFES were quite distinct phenomena and different factors need consideration in their prediction. It is recommended that managers and decision-makers in this field consider factors such as job stress, personality and the prior occurrence of injuries in their assessment of risk. © The Author 2014. Published by Oxford University Press on behalf of the Society of Occupational Medicine. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  8. Evaluation of offshore stocking of Lake Trout in Lake Ontario

    Science.gov (United States)

    Lantry, B.F.; O'Gorman, R.; Strang, T.G.; Lantry, J.R.; Connerton, M.J.; Schanger, T.

    2011-01-01

    Restoration stocking of hatchery-reared lake trout Salvelinus namaycush has occurred in Lake Ontario since 1973. In U.S. waters, fish stocked through 1990 survived well and built a large adult population. Survival of yearlings stocked from shore declined during 1990–1995, and adult numbers fell during 1998–2005. Offshore stocking of lake trout was initiated in the late 1990s in response to its successful mitigation of predation losses to double-crested cormorants Phalacrocorax auritus and the results of earlier studies that suggested it would enhance survival in some cases. The current study was designed to test the relative effectiveness of three stocking methods at a time when poststocking survival for lake trout was quite low and losses due to fish predators was a suspected factor. The stocking methods tested during 2000–2002 included May offshore, May onshore, and June onshore. Visual observations during nearshore stockings and hydroacoustic observations of offshore stockings indicated that release methods were not a direct cause of fish mortality. Experimental stockings were replicated for 3 years at one site in the southwest and for 2 years at one site in the southeast. Offshore releases used a landing craft to transport hatchery trucks from 3 to 6 km offshore out to 55–60-m-deep water. For the southwest site, offshore stocking significantly enhanced poststocking survival. Among the three methods, survival ratios were 1.74 : 1.00 : 1.02 (May offshore : May onshore : June onshore). Although not statistically significant owing to the small samples, the trends were similar for the southeast site, with survival ratios of 1.67 : 1.00 : 0.72. Consistent trends across years and sites indicated that offshore stocking of yearling lake trout during 2000–2002 provided nearly a twofold enhancement in survival; however, this increase does not appear to be great enough to achieve the 12-fold enhancement necessary to return population abundance to restoration

  9. Preschool Early Literacy Programs in Ontario Public Libraries

    Directory of Open Access Journals (Sweden)

    Shelley Stagg Peterson

    2012-12-01

    Full Text Available This paper reports on research examining how library staff in 10 Ontario libraries’ preschool literacy programs support three- and four-year-old children’s early literacy and school readiness as well as their parents’ and caregivers’ literacy interactions with their children. Multiple data sources included surveys of 82 parents/caregivers, observations of a sample of 65 of the 198 children at the sessions we visited, and interviews with10 library staff. Observations were analyzed for evidence of children’s development of print motivation, phonological awareness, vocabulary, narrative skills, and print awareness: early literacy skills and knowledge that have been shown to be reliably and significantly correlated with future reading success. Analysis of the observational and interview data showed that the programs have been very successful in fostering children’s readiness to participate in school activities and their motivation to read. Participating children learned new vocabulary, demonstrated an awareness of rhymes and sounds of language, and showed an understanding of books that were read by library staff: all early literacy behaviours that are foundational to later literacy development. The programs have also provided parents/caregivers with new ways to interact with children to engage them with books and with print at home. The development of children’s school readiness skills and parents’ awareness of how to support their children’s literacy are outcomes extending beyond library staff goals for their library programs and should be included in literature advertising the programs. Print awareness is an area of literacy development that library staff could encourage to a greater extent, however. Very few instances of such behaviour were observed, with most of the observations taking place in two of the preschool early literacy programs. Concomitantly, developing children’s print awareness is a recommended topic for

  10. Evaluation of external biosecurity practices on southern Ontario sow farms.

    Science.gov (United States)

    Bottoms, Kate; Poljak, Zvonimir; Dewey, Cate; Deardon, Rob; Holtkamp, Derald; Friendship, Robert

    2013-04-01

    External biosecurity protocols, aimed at preventing the introduction of new pathogens to the farm environment, are becoming increasingly important in the swine industry. Although assessments at the individual farm level occur regularly, efforts to cluster swine herds into meaningful biosecurity groups and to summarize this information at the regional level are relatively infrequent. The objectives of this study were: (i) to summarize external biosecurity practices on sow farms in southern Ontario; (ii) to cluster these farms into discrete biosecurity groups and to describe their characteristics, the variables of importance in differentiating between these groups, and their geographic distribution; and (iii) to identify significant predictors of biosecurity group membership. Data were collected using the Production Animal Disease Risk Assessment Program's Survey for the Breeding Herd. A subset of variables pertaining to external biosecurity practices was selected for two-step cluster analysis, which resulted in 3 discrete biosecurity groups. These groups were named by the authors as: (i) high biosecurity herds that were open with respect to replacement animals, (ii) high biosecurity herds that were closed with respect to replacement animals, and (iii) low biosecurity herds. Variables pertaining to trucking practices and the source of replacement animals were the most important in differentiating between these groups. Multinomial logistic regression provided insight into which demographic and neighborhood variables serve as significant predictors of biosecurity group membership (pbiosecurity group that was open with respect to replacement animals, relative to the low biosecurity group, increased 1.001 times for each additional sow (p=0.001). The odds of belonging to the high biosecurity group that was open with respect to replacement animals, relative to the low biosecurity group, were 6.5 times greater for farms that produced genetic animals than for farms that

  11. Isotope hydrology of the Chalk River Laboratories site, Ontario, Canada

    Science.gov (United States)

    Peterman, Zell; Neymark, Leonid; King-Sharp, K.J.; Gascoyne, Mel

    2016-01-01

    This paper presents results of hydrochemical and isotopic analyses of groundwater (fracture water) and porewater, and physical property and water content measurements of bedrock core at the Chalk River Laboratories (CRL) site in Ontario. Density and water contents were determined and water-loss porosity values were calculated for core samples. Average and standard deviations of density and water-loss porosity of 50 core samples from four boreholes are 2.73 ± 12 g/cc and 1.32 ± 1.24 percent. Respective median values are 2.68 and 0.83 indicating a positive skewness in the distributions. Groundwater samples from four deep boreholes were analyzed for strontium (87Sr/86Sr) and uranium (234U/238U) isotope ratios. Oxygen and hydrogen isotope analyses and selected solute concentrations determined by CRL are included for comparison. Groundwater from borehole CRG-1 in a zone between approximately +60 and −240 m elevation is relatively depleted in δ18O and δ2H perhaps reflecting a slug of water recharged during colder climatic conditions. Porewater was extracted from core samples by centrifugation and analyzed for major dissolved ions and for strontium and uranium isotopes. On average, the extracted water contains 15 times larger concentration of solutes than the groundwater. 234U/238U and correlation of 87Sr/86Sr with Rb/Sr values indicate that the porewater may be substantially older than the groundwater. Results of this study show that the Precambrian gneisses at Chalk River are similar in physical properties and hydrochemical aspects to crystalline rocks being considered for the construction of nuclear waste repositories in other regions.

  12. Accelerator based fusion reactor

    Science.gov (United States)

    Liu, Keh-Fei; Chao, Alexander Wu

    2017-08-01

    A feasibility study of fusion reactors based on accelerators is carried out. We consider a novel scheme where a beam from the accelerator hits the target plasma on the resonance of the fusion reaction and establish characteristic criteria for a workable reactor. We consider the reactions d+t\\to n+α,d+{{}3}{{H}\\text{e}}\\to p+α , and p+{{}11}B\\to 3α in this study. The critical temperature of the plasma is determined from overcoming the stopping power of the beam with the fusion energy gain. The needed plasma lifetime is determined from the width of the resonance, the beam velocity and the plasma density. We estimate the critical beam flux by balancing the energy of fusion production against the plasma thermo-energy and the loss due to stopping power for the case of an inert plasma. The product of critical flux and plasma lifetime is independent of plasma density and has a weak dependence on temperature. Even though the critical temperatures for these reactions are lower than those for the thermonuclear reactors, the critical flux is in the range of {{10}22}-{{10}24}~\\text{c}{{\\text{m}}-2}~{{\\text{s}}-1} for the plasma density {ρt}={{10}15}~\\text{c}{{\\text{m}}-3} in the case of an inert plasma. Several approaches to control the growth of the two-stream instability are discussed. We have also considered several scenarios for practical implementation which will require further studies. Finally, we consider the case where the injected beam at the resonance energy maintains the plasma temperature and prolongs its lifetime to reach a steady state. The equations for power balance and particle number conservation are given for this case.

  13. Biparticle fluidized bed reactor

    Science.gov (United States)

    Scott, C.D.

    1993-12-14

    A fluidized bed reactor system which utilizes a fluid phase, a retained fluidized primary particulate phase, and a migratory second particulate phase is described. The primary particulate phase is a particle such as a gel bead containing an immobilized biocatalyst. The secondary particulate phase, continuously introduced and removed in either cocurrent or countercurrent mode, acts in a secondary role such as a sorbent to continuously remove a product or by-product constituent from the fluid phase. Introduction and removal of the sorbent phase is accomplished through the use of feed screw mechanisms and multivane slurry valves. 3 figures.

  14. FAST NEUTRONIC REACTOR

    Science.gov (United States)

    Snell, A.H.

    1957-12-01

    This patent relates to a reactor and process for carrying out a controlled fast neutron chain reaction. A cubical reactive mass, weighing at least 920 metric tons, of uranium metal containing predominantly U/sup 238/ and having a U/sup 235/ content of at least 7.63% is assembled and the maximum neutron reproduction ratio is limited to not substantially over 1.01 by insertion and removal of a varying amount of boron, the reactive mass being substantially freed of moderator.

  15. Licensed reactor nuclear safety criteria applicable to DOE reactors

    Energy Technology Data Exchange (ETDEWEB)

    1991-04-01

    The Department of Energy (DOE) Order DOE 5480.6, Safety of Department of Energy-Owned Nuclear Reactors, establishes reactor safety requirements to assure that reactors are sited, designed, constructed, modified, operated, maintained, and decommissioned in a manner that adequately protects health and safety and is in accordance with uniform standards, guides, and codes which are consistent with those applied to comparable licensed reactors. This document identifies nuclear safety criteria applied to NRC (Nuclear Regulatory Commission) licensed reactors. The titles of the chapters and sections of USNRC Regulatory Guide 1.70, Standard Format and Content of Safety Analysis Reports for Nuclear Power Plants, Rev. 3, are used as the format for compiling the NRC criteria applied to the various areas of nuclear safety addressed in a safety analysis report for a nuclear reactor. In each section the criteria are compiled in four groups: (1) Code of Federal Regulations, (2) US NRC Regulatory Guides, SRP Branch Technical Positions and Appendices, (3) Codes and Standards, and (4) Supplemental Information. The degree of application of these criteria to a DOE-owned reactor, consistent with their application to comparable licensed reactors, must be determined by the DOE and DOE contractor.

  16. Fast Reactor Fuel Type and Reactor Safety Performance

    Energy Technology Data Exchange (ETDEWEB)

    R. Wigeland; J. Cahalan

    2009-09-01

    Fast Reactor Fuel Type and Reactor Safety Performance R. Wigeland , Idaho National Laboratory J. Cahalan, Argonne National Laboratory The sodium-cooled fast neutron reactor is currently being evaluated for the efficient transmutation of the highly-hazardous, long-lived, transuranic elements that are present in spent nuclear fuel. One of the fundamental choices that will be made is the selection of the fuel type for the fast reactor, whether oxide, metal, carbide, nitride, etc. It is likely that a decision on the fuel type will need to be made before many of the related technologies and facilities can be selected, from fuel fabrication to spent fuel reprocessing. A decision on fuel type should consider all impacts on the fast reactor system, including safety. Past work has demonstrated that the choice of fuel type may have a significant impact on the severity of consequences arising from accidents, especially for severe accidents of low probability. In this paper, the response of sodium-cooled fast reactors is discussed for both oxide and metal fuel types, highlighting the similarities and differences in reactor response and accident consequences. Any fast reactor facility must be designed to be able to successfully prevent, mitigate, or accommodate all consequences of potential events, including accidents. This is typically accomplished by using multiple barriers to the release of radiation, including the cladding on the fuel, the intact primary cooling system, and most visibly the reactor containment building. More recently, this has also included the use of ‘inherent safety’ concepts to reduce or eliminate the potential for serious damage in some cases. Past experience with oxide and metal fuel has demonstrated that both fuel types are suitable for use as fuel in a sodium-cooled fast reactor. However, safety analyses for these two fuel types have also shown that there can be substantial differences in accident consequences due to the neutronic and

  17. Reactor Physics Analysis Models for a CANDU Reactor

    Energy Technology Data Exchange (ETDEWEB)

    Choi, Hang Bok

    2007-10-15

    Canada deuterium uranium (CANDU) reactor physics analysis is typically performed in three steps. At first, macroscopic cross-sections of the reference lattice is produced by modeling the reference fuel channel. Secondly macroscopic cross-sections of reactivity devices in the reactor are generated. The macroscopic cross-sections of a reactivity device are calculated as incremental cross-sections by subtracting macroscopic cross-sections of a three-dimensional lattice without reactivity device from those of a three-dimensional lattice with a reactivity device. Using the macroscopic cross-sections of the reference lattice and incremental cross-sections of the reactivity devices, reactor physics calculations are performed. This report summarizes input data of typical CANDU reactor physics codes, which can be utilized for the future CANDU reactor physics analysis.

  18. Reactor Physics Analysis Models for a CANDU Reactor

    Energy Technology Data Exchange (ETDEWEB)

    Choi, Hang Bok

    2007-10-15

    Canada deuterium uranium (CANDU) reactor physics analysis is typically performed in three steps. At first, macroscopic cross-sections of the reference lattice is produced by modeling the reference fuel channel. Secondly macroscopic cross-sections of reactivity devices in the reactor are generated. The macroscopic cross-sections of a reactivity device are calculated as incremental cross-sections by subtracting macroscopic cross-sections of a three-dimensional lattice without reactivity device from those of a three-dimensional lattice with a reactivity device. Using the macroscopic cross-sections of the reference lattice and incremental cross-sections of the reactivity devices, reactor physics calculations are performed. This report summarizes input data of typical CANDU reactor physics codes, which can be utilized for the future CANDU reactor physics analysis.

  19. The demonstration projects: creating the capacity for nursing health human resource planning in Ontario's healthcare organizations.

    Science.gov (United States)

    Burkoski, Vanessa; Tepper, Joshua

    2010-05-01

    Timely access to healthcare services requires the right number, mix and distribution of appropriately educated nurses, physicians and other healthcare professionals. In Ontario, as in several other jurisdictions, changing demographics, patterns of health service utilization and an aging workforce have created challenges related to the supply of nurses available now and in the future to deliver quality patient care. From 2006 to 2009, the Nursing Secretariat (NS) of Ontario's Ministry of Health and Long-Term Care (the ministry) undertook a progressive and comprehensive approach to address the issue of nursing supply across the province through the introduction of 17 Nursing Health Human Resources Demonstration Projects (demonstration projects). The demonstration projects initiative has led to the creation of a unique collection of best practices, tools and resources aimed at improving organizational planning capacity. Evaluation of the initiative generated recommendations that may guide the ministry toward policy and program development to foster improved nursing health human resource planning capacity in Ontario healthcare organizations.

  20. Student Perceptions of Literacy after the Ontario Secondary Literacy Course: A Qualitative Inquiry

    Directory of Open Access Journals (Sweden)

    Thomas G. Ryan

    2014-10-01

    Full Text Available Adolescent literacy has emerged via the high-stakesstandardized test known as the Ontario Secondary School Literacy Test (OSSLTas a critical area of debate and study. Research has indicated a directconnection between literacy and identity, and that student literacy practicesdiffer from traditional measures of literacy located in school curriculum andevaluated via standardized tests such as the OSSLT. Outcomes such as limitedachievement, difficulties with literacy and the development of literacy skills,and subsequent below standard scorescan diminish student self-concept, lower self-esteem, and impede self-efficacy.This ethnographic case study illuminated the impact of OSSLT and subsequentmandatory enrolment in the Ontario Secondary School Literacy Course usingsemi-structured interviews involving high-school students from a northernOntario secondary school. Previous related research outcomes, whichdemonstrated a connection between standardized test scores and self-concept,were realized via participants’ understanding and perception of literacy, andthrough mitigating factors impacting literacy engagement and achievement.

  1. Guide to resource conservation and cost savings opportunities in the Ontario meat and poultry sector

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-07-01

    Means by which the Ontario meat and poultry industries can reduce their consumption of energy, water and other resources, and reduce environmental discharges are discussed. In turn, improvements in resource and environmental efficiency by Ontario meat and poultry plants could help alleviate the load on Ontario's municipal infrastructure, reducing the need for new construction, as well as helping to minimize greenhouse gas emissions into the atmosphere. By implementing the measures recommended in this guide the industry can also significantly reduce its operating cost at little or no capital expense. This revised edition improves the visual appearance and versatility of the Guide, in addition to including suggestions by the Canadian Meat Council, the Canadian Poultry and Egg Processors Council, the Canadian Food Inspection Agency , and the Ministry of Agriculture, Food and Rural Affairs, as amplification of the views of the authorities consulted in the preparation of the 1994 first edition. 22 refs., 26 tabs., 7 figs.

  2. The real truth about wind energy: a literature based introduction to wind turbines in Ontario

    Energy Technology Data Exchange (ETDEWEB)

    Gadawski, Alexandra; Lynch, Greg [Sierra Club Canada (Canada)

    2011-08-15

    With the development of wind power energy in Ontario, several questions and concerns have been raised. This literature review addresses the viability, safety and environmental impact of wind power. The review was carried out on scientific publications, journal articles, books and study results. This document first presents energy generation and consumption in Ontario, it then presents wind energy technology in general and finally, it focuses on wind energy in Ontario. After reviewing all available information, Sierra Club Canada concludes that there is no proof of significant health effects attributable to wind energy and that use of this energy can minimize carbon emissions, improving the air quality and the health and well-being of Canadians. Sierra Club Canada believes that wind turbines are not linked to health concerns and that Canada should embrace wind power.

  3. Report of the OCVCI-PAPRICAN forest-based chemicals biorefinery Northern Ontario Commercialization Initiative workshop

    Energy Technology Data Exchange (ETDEWEB)

    Magdzinski, L. (ed.)

    2007-07-01

    This workshop was held to establish commercial processes for the generation of sustainable chemical feedstock from pulp mills. The workshop was attended by over 60 participants from the pulp and paper industry as well as members of the chemical, forestry, and industrial biotechnology industries. Representatives from governments and academic institutions also attended. Links were established between the Ontario forest sector and the Ontario chemical and and polymer sectors. The workshop presented a range of topics for discussion among participants, including issues related to the development of industrial chemicals from pulp mills and methods of sustainably extracting chemicals from hemicellulose. Issues related to the development of bioplastics from pulp production were discussed as well as new developments in wood-derived pharmaceuticals and nutraceuticals. Ontario forestry resources were reviewed, and a Paprican biorefinery agenda was presented. Current pulp mill bio-based chemicals were discussed, and sustainable feedstocks for the production of chemicals were identified. Industrial bioconversion processes were also outlined.

  4. The New Articulation of Equity Education in Neoliberal Times: The Changing Conception of Social Justice in Ontario

    Science.gov (United States)

    Rezai-Rashti, G.; Segeren, A.; Martino, W.

    2017-01-01

    In this paper, we draw attention to the impact of neoliberal globalisation in rearticulating conceptions of equity within the Ontario context. The Ontario education system has been hailed for its top performance on Programme for International Student Assessment (PISA) as a high-equity/high-quality education system and created "PISA envy"…

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

    Directory of Open Access Journals (Sweden)

    Klazinga Niek S

    2007-02-01

    Full Text Available Abstract Background 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 this cross-national learning, a study was undertaken to compare health system performance approaches in The Netherlands with Ontario, Canada. Methods We explored the performance assessment framework and system of each constituency, the embeddedness of performance data in management and policy processes, and the interrelationships between the frameworks. Methods used included analysing governmental strategic planning and policy documents, literature and internet searches, comparative descriptive tables, and schematics. Data collection and analysis took place in Ontario and The Netherlands. A workshop to validate and discuss the findings was conducted in Toronto, adding important insights to the study. Results Both Ontario and The Netherlands conceive health system performance within supportive frameworks. However they differ in their assessment approaches. Ontario's Scorecard links performance measurement with strategy, aimed at health system integration. The Dutch Health Care Performance Report (Zorgbalans does not explicitly link performance with strategy, and focuses on the technical quality of healthcare by measuring dimensions of quality, access, and cost against healthcare needs. A backbone 'five diamond' framework maps both frameworks and articulates the interrelations and overlap between their goals, themes, dimensions and indicators. The workshop yielded more contextual insights and further validated the comparative values of each constituency's performance assessment system. Conclusion To compare the health system performance approaches between The Netherlands and Ontario, Canada, several important conceptual and contextual issues must be addressed

  6. Public awareness of income-related health inequalities in Ontario, Canada

    Directory of Open Access Journals (Sweden)

    Shankardass Ketan

    2012-05-01

    Full Text Available Abstract Introduction Continued action is needed to tackle health inequalities in Canada, as those of lower income continue to be at higher risk for a range of negative health outcomes. There is arguably a lack of political will to implement policy change in this respect. As a result, we investigated public awareness of income-related health inequalities in a generally representative sample of Ontarians in late 2010. Methods Data were collected from 2,006 Ontario adults using a telephone survey. The survey asked participants to agree or disagree with various statements asserting that there are or are not health inequalities in general and by income in Ontario, including questions pertaining to nine specific conditions for which inequalities have been described in Ontario. A multi-stage process using binary logistic regression determined whether awareness of health inequalities differed between participant subgroups. Results Almost 73% of this sample of Ontarians agreed with the general premise that not all people are equally healthy in Ontario, but fewer participants were aware of health inequalities between the rich and the poor (53%–64%, depending on the framing of the question. Awareness of income-related inequalities in specific outcomes was considerably lower, ranging from 18% for accidents to 35% for obesity. Conclusions This is the first province-wide study in Canada, and the first in Ontario, to explore public awareness on health inequalities. Given that political will is shaped by public awareness and opinion, these results suggest that greater awareness may be required to move the health equity agenda forward in Ontario. There is a need for health equity advocates, physicians and researchers to increase the effectiveness of knowledge translation activities for studies that identify and explore health inequalities.

  7. Chemical-vapor-deposition reactor

    Science.gov (United States)

    Chern, S.

    1979-01-01

    Reactor utilizes multiple stacked trays compactly arranged in paths of horizontally channeled reactant gas streams. Design allows faster and more efficient deposits of film on substrates, and reduces gas and energy consumption. Lack of dead spots that trap reactive gases reduces reactor purge time.

  8. Thermochemical reactor systems and methods

    Energy Technology Data Exchange (ETDEWEB)

    Lipinski, Wojciech; Davidson, Jane Holloway; Chase, Thomas Richard

    2016-11-29

    Thermochemical reactor systems that may be used to produce a fuel, and methods of using the thermochemical reactor systems, utilizing a reactive cylindrical element, an optional energy transfer cylindrical element, an inlet gas management system, and an outlet gas management system.

  9. Test reactor risk assessment methodology

    Energy Technology Data Exchange (ETDEWEB)

    Jennings, R.H.; Rawlins, J.K.; Stewart, M.E.

    1976-04-01

    A methodology has been developed for the identification of accident initiating events and the fault modeling of systems, including common mode identification, as these methods are applied in overall test reactor risk assessment. The methods are exemplified by a determination of risks to a loss of primary coolant flow in the Engineering Test Reactor.

  10. Studies on a membrane reactor

    Energy Technology Data Exchange (ETDEWEB)

    Mohan, K.; Govind, R.

    1988-10-01

    Simulation is used to evaluate the performance of a catalytic reactor with permeable wall (membrane reactor) in shifting the equilibrium of three reversible reactions (cyclohexane dehydrogenation, hydrogen iodide decomposition, and propylene disproportionation). It is found that the preferred choice of cocurrernt or countercurrent operation is dependent on the physical properties and operating conditions. Methods of enhancing conversion are suggested and temperature effects are discussed.

  11. Thermochemical reactor systems and methods

    Science.gov (United States)

    Lipinski, Wojciech; Davidson, Jane Holloway; Chase, Thomas Richard

    2016-11-29

    Thermochemical reactor systems that may be used to produce a fuel, and methods of using the thermochemical reactor systems, utilizing a reactive cylindrical element, an optional energy transfer cylindrical element, an inlet gas management system, and an outlet gas management system.

  12. Brookhaven leak reactor to close

    CERN Multimedia

    MacIlwain, C

    1999-01-01

    The DOE has announced that the High Flux Beam Reactor at Brookhaven is to close for good. Though the news was not unexpected researchers were angry the decision had been taken before the review to assess the impact of reopening the reactor had been concluded (1 page).

  13. Austerity, Competitiveness and Neoliberalism Redux: Ontario Responds to the Great Recession

    Directory of Open Access Journals (Sweden)

    Carlo Fanelli

    2011-09-01

    Full Text Available This article examines the deepening integration of market imperatives throughout the province of Ontario. We do this by, first, examining neoliberalism’s theoretical underpinnings, second, reviewing Ontario’s historical context, and third, scrutinizing the Open Ontario Plan, with a focus on proposed changes to employment standards legislation. We argue that contrary to claims of shared restraint and the pressing need for public austerity, Premier McGuinty’s Liberal’s have re-branded and re-packaged core neoliberal policies in such a manner that costs are socialized and profits privatized, thereby intensifying class polarization along with its racialized and gendered diversities.

  14. Optimizing the detection of venous invasion in colorectal cancer: The Ontario, Canada, experience and beyond

    Directory of Open Access Journals (Sweden)

    Heather eDawson

    2015-01-01

    Full Text Available Venous invasion (VI is a well-established independent prognostic indicator in colorectal cancer (CRC. Its accurate detection is particularly important in stage II CRC as it may influence the decision to administer adjuvant therapy. The Royal College of Pathologists (RCPath of the United Kingdom state that VI should be detected in at least 30% of CRC resection specimens. However, our experience in Ontario, Canada suggests that this (conservative benchmark is rarely met. This article highlights the Ontario experience with respect to VI reporting and the key role that careful morphologic assessment, elastin staining and knowledge transfer has played in improving VI detection provincially and beyond.

  15. Applications of HCMM satellite data. [Lake Ontario, Buffalo, Syracuse, and Rochester, New York

    Science.gov (United States)

    1980-01-01

    The thermal properties of Lake Ontario as they relate to water equality, lake hydrology and energy exchange were investigated as well as the urban heat island problem in selected areas adjacent to the lake. The HCMM thermal sensor was fully calibrated for several underflight data. Actual surface water temperature maps were generated for all of Lake Ontario using the calibration procedure developed. Major water quality changes associated with the thermal bar as located by HCMM thermal data were observed from satellite and aerial data and verified by ground truth.

  16. Shifting Currents: Science Technology Society and Environment in Northern Ontario Schools

    OpenAIRE

    2013-01-01

    The focus is on the practices of secondary science teachers in rural, resource-extraction-based communities in the boreal region of northern Ontario, Canada. In 2008 the Ontario Ministry of Education mandated that science teaching and learning should bring to the forefront consideration of the impacts of science on society and environment, and include environmental education; topics that are particularly pertinent given the location(s) of the study in logging and mining towns. Three years aft...

  17. Metallic fuels for advanced reactors

    Science.gov (United States)

    Carmack, W. J.; Porter, D. L.; Chang, Y. I.; Hayes, S. L.; Meyer, M. K.; Burkes, D. E.; Lee, C. B.; Mizuno, T.; Delage, F.; Somers, J.

    2009-07-01

    In the framework of the Generation IV Sodium Fast Reactor Program, the Advanced Fuel Project has conducted an evaluation of the available fuel systems supporting future sodium cooled fast reactors. This paper presents an evaluation of metallic alloy fuels. Early US fast reactor developers originally favored metal alloy fuel due to its high fissile density and compatibility with sodium. The goal of fast reactor fuel development programs is to develop and qualify a nuclear fuel system that performs all of the functions of a conventional fast spectrum nuclear fuel while destroying recycled actinides. This will provide a mechanism for closure of the nuclear fuel cycle. Metal fuels are candidates for this application, based on documented performance of metallic fast reactor fuels and the early results of tests currently being conducted in US and international transmutation fuel development programs.

  18. A model of reactor kinetics

    Energy Technology Data Exchange (ETDEWEB)

    Thompson, A.S.; Thompson, B.R.

    1988-09-01

    The analytical model of nuclear reactor transients, incorporating both mechanical and nuclear effects, simulates reactor kinetics. Linear analysis shows the stability borderline for small power perturbations. In a stable system, initial power disturbances die out with time. With an unstable combination of nuclear and mechanical characteristics, initial disturbances persist and may increase with time. With large instability, oscillations of great magnitude occur. Stability requirements set limits on the power density at which particular reactors can operate. The limiting power density depends largely on the product of two terms: the fraction of delayed neutrons and the frictional damping of vibratory motion in reactor core components. As the fraction of delayed neutrons is essentially fixed, mechanical damping largely determines the maximum power density. A computer program, based on the analytical model, calculates and plots reactor power as a nonlinear function of time in response to assigned values of mechanical and nuclear characteristics.

  19. Engineering reactors for catalytic reactions

    Indian Academy of Sciences (India)

    Vivek V Ranade

    2014-03-01

    Catalytic reactions are ubiquitous in chemical and allied industries. A homogeneous or heterogeneous catalyst which provides an alternative route of reaction with lower activation energy and better control on selectivity can make substantial impact on process viability and economics. Extensive studies have been conducted to establish sound basis for design and engineering of reactors for practising such catalytic reactions and for realizing improvements in reactor performance. In this article, application of recent (and not so recent) developments in engineering reactors for catalytic reactions is discussed. Some examples where performance enhancement was realized by catalyst design, appropriate choice of reactor, better injection and dispersion strategies and recent advances in process intensification/ multifunctional reactors are discussed to illustrate the approach.

  20. Unsteady processes in catalytic reactors

    Energy Technology Data Exchange (ETDEWEB)

    Matros, Yu.Sh.

    1985-01-01

    In recent years a realization has occurred that reaction and reactor dynamics must be considered when designing and operating catalytic reactors. In this book, the author has focussed on both the processes occurring on individual porous-catalyst particles as well as the phenomena displayed by collections of these particles in fixed-bed reactors. The major topics discussed include the effects of unsteady-state heat and mass transfer, the influence of inhomogeneities and stagnant regions in fixed beds, and reactor operation during forced cycling of operating conditions. Despite the title of the book, attention is also paid to the determination of the number and stability of fixed-bed steady states, with the aim of describing the possibility of controlling reactors at unstable steady states. However, this development is somewhat dated, given the recent literature on multiplicity phenomena and process control.

  1. Antineutrino Monitoring of Thorium Reactors

    CERN Document Server

    Akindele, Oluwatomi A; Norman, Eric B

    2015-01-01

    Various groups have demonstrated that antineutrino monitoring can be successful in assessing the plutonium content in water-cooled nuclear reactors for nonproliferation applications. New reactor designs and concepts incorporate nontraditional fuels types and chemistry. Understanding how these properties affect the antineutrino emission from a reactor can extend the applicability of antineutrino monitoring.Thorium molten salt reactors (MSR) breed U-233, that if diverted constitute an IAEA direct use material. The antineutrino spectrum from the fission of U-233 has been determined, the feasibility of detecting the diversion of a significant quantity, 8 kg of U-233, within the IAEA timeliness goal of 30 days has been evaluated. The antineutrino emission from a thorium reactor operating under normal conditions is compared to a diversion scenario at a 25 meter standoff by evaluating the daily antineutrino count rate and the energy spectrum of the detected antineutrinos. It was found that the diversion of a signifi...

  2. Development of machine vision system for PHWR fuel pellet inspection

    Energy Technology Data Exchange (ETDEWEB)

    Kamalesh Kumar, B.; Reddy, K.S.; Lakshminarayana, A.; Sastry, V.S.; Ramana Rao, A.V. [Nuclear Fuel Complex, Hyderabad, Andhra Pradesh (India); Joshi, M.; Deshpande, P.; Navathe, C.P.; Jayaraj, R.N. [Raja Ramanna Centre for Advanced Technology, Indore, Madhya Pradesh (India)

    2008-07-01

    Nuclear Fuel Complex, a constituent of Department of Atomic Energy; India is responsible for manufacturing nuclear fuel in India . Over a million Uranium-di-oxide pellets fabricated per annum need visual inspection . In order to overcome the limitations of human based visual inspection, NFC has undertaken the development of machine vision system. The development involved designing various subsystems viz. mechanical and control subsystem for handling and rotation of fuel pellets, lighting subsystem for illumination, image acquisition system, and image processing system and integration. This paper brings out details of various subsystems and results obtained from the trials conducted. (author)

  3. Estimating cancer risk in relation to tritium exposure from routine operation of a nuclear-generating station in Pickering, Ontario.

    Science.gov (United States)

    Wanigaratne, S; Holowaty, E; Jiang, H; Norwood, T A; Pietrusiak, M A; Brown, P

    2013-09-01

    Evidence suggests that current levels of tritium emissions from CANDU reactors in Canada are not related to adverse health effects. However, these studies lack tritium-specific dose data and have small numbers of cases. The purpose of our study was to determine whether tritium emitted from a nuclear-generating station during routine operation is associated with risk of cancer in Pickering, Ontario. A retrospective cohort was formed through linkage of Pickering and north Oshawa residents (1985) to incident cancer cases (1985-2005). We examined all sites combined, leukemia, lung, thyroid and childhood cancers (6-19 years) for males and females as well as female breast cancer. Tritium estimates were based on an atmospheric dispersion model, incorporating characteristics of annual tritium emissions and meteorology. Tritium concentration estimates were assigned to each cohort member based on exact location of residence. Person-years analysis was used to determine whether observed cancer cases were higher than expected. Cox proportional hazards regression was used to determine whether tritium was associated with radiation-sensitive cancers in Pickering. Person-years analysis showed female childhood cancer cases to be significantly higher than expected (standardized incidence ratio [SIR] = 1.99, 95% confidence interval [CI]: 1.08-3.38). The issue of multiple comparisons is the most likely explanation for this finding. Cox models revealed that female lung cancer was significantly higher in Pickering versus north Oshawa (HR = 2.34, 95% CI: 1.23-4.46) and that tritium was not associated with increased risk. The improved methodology used in this study adds to our understanding of cancer risks associated with low-dose tritium exposure. Tritium estimates were not associated with increased risk of radiationsensitive cancers in Pickering.

  4. Chasing the Late Jurassic APW Monster Shift in Ontario Kimberlites

    Science.gov (United States)

    Kent, D. V.; Muttoni, G.; Gee, J. S.; Kjarsgaard, B. A.

    2012-12-01

    A 30° gap was recognized in a composite APW path when global poles from predominantly igneous rocks were assembled in North American coordinates using plate reconstructions (Kent & Irving 2010 JGR). The 'monster shift' occurred between a 160-190 Ma cluster of mean poles at 75-80°N 90-110°E to a 140-145 Ma grouping centered at 60-65°N ~200°E. There are hardly any intermediate igneous poles whereas the rather divergent directions from the Late Jurassic Morrison Formation published by Steiner & Helsley (1975 GSA Bulletin) are subject to adjustments for Colorado Plateau rotation and sedimentary inclination error, neither of which are precisely known for this redbed unit sampled in Colorado. On the other hand, similar large rapid swings have been recognized in the Late Jurassic APW path for Adria (Channell et al. 2010 Paleo3), suggesting a global phenomena. In an effort to fill the data gap between ~145 and 160 Ma, we sampled accessible outcrops/subcrops of kimberlites in the Timiskaming area of Ontario, Canada, that are associated with high precision U-Pb perovskite ages (Heamon & Kjarsgaard 2000 EPSL). We report initial results from two of the intrusions: the 153.6±2.4 Ma Peddie kimberlite from outcrop and the Triple B kimberlite that was accessible by trenching and is assumed to be the same age as the nearby 153.7±1.8 Ma Seed kimberlite as delineated by aeromagnetic surveys and borings. Systematic progressive thermal demagnetization indicated in each unit a dominant characteristic component with unblocking temperatures to 575° that presumably reflect a magnetite carrier that will be checked by further rock magnetic experiments. Samples from the Peddie kimberlite had stable downward (normal polarity) magnetizations whose mean direction gives a paleopole at 73°N 184°E. In contrast, samples from the Triple B kimberlite have upward (reverse polarity) magnetizations with a well-grouped direction whose (north) paleopole is 78°N 197°E, proximal to the Peddie

  5. GPS coordinate time series measurements in Ontario and Quebec, Canada

    Science.gov (United States)

    Samadi Alinia, Hadis; Tiampo, Kristy F.; James, Thomas S.

    2017-01-01

    New precise network solutions for continuous GPS (cGPS) stations distributed in eastern Ontario and western Québec provide constraints on the regional three-dimensional crustal velocity field. Five years of continuous observations at fourteen cGPS sites were analyzed using Bernese GPS processing software. Several different sub-networks were chosen from these stations, and the data were processed and compared to in order to select the optimal configuration to accurately estimate the vertical and horizontal station velocities and minimize the associated errors. The coordinate time series were then compared to the crustal motions from global solutions and the optimized solution is presented here. A noise analysis model with power-law and white noise, which best describes the noise characteristics of all three components, was employed for the GPS time series analysis. The linear trend, associated uncertainties, and the spectral index of the power-law noise were calculated using a maximum likelihood estimation approach. The residual horizontal velocities, after removal of rigid plate motion, have a magnitude consistent with expected glacial isostatic adjustment (GIA). The vertical velocities increase from subsidence of almost 1.9 mm/year south of the Great Lakes to uplift near Hudson Bay, where the highest rate is approximately 10.9 mm/year. The residual horizontal velocities range from approximately 0.5 mm/year, oriented south-southeastward, at the Great Lakes to nearly 1.5 mm/year directed toward the interior of Hudson Bay at stations adjacent to its shoreline. Here, the velocity uncertainties are estimated at less than 0.6 mm/year for the horizontal component and 1.1 mm/year for the vertical component. A comparison between the observed velocities and GIA model predictions, for a limited range of Earth models, shows a better fit to the observations for the Earth model with the smallest upper mantle viscosity and the largest lower mantle viscosity. However, the

  6. GPS coordinate time series measurements in Ontario and Quebec, Canada

    Science.gov (United States)

    Samadi Alinia, Hadis; Tiampo, Kristy F.; James, Thomas S.

    2017-06-01

    New precise network solutions for continuous GPS (cGPS) stations distributed in eastern Ontario and western Québec provide constraints on the regional three-dimensional crustal velocity field. Five years of continuous observations at fourteen cGPS sites were analyzed using Bernese GPS processing software. Several different sub-networks were chosen from these stations, and the data were processed and compared to in order to select the optimal configuration to accurately estimate the vertical and horizontal station velocities and minimize the associated errors. The coordinate time series were then compared to the crustal motions from global solutions and the optimized solution is presented here. A noise analysis model with power-law and white noise, which best describes the noise characteristics of all three components, was employed for the GPS time series analysis. The linear trend, associated uncertainties, and the spectral index of the power-law noise were calculated using a maximum likelihood estimation approach. The residual horizontal velocities, after removal of rigid plate motion, have a magnitude consistent with expected glacial isostatic adjustment (GIA). The vertical velocities increase from subsidence of almost 1.9 mm/year south of the Great Lakes to uplift near Hudson Bay, where the highest rate is approximately 10.9 mm/year. The residual horizontal velocities range from approximately 0.5 mm/year, oriented south-southeastward, at the Great Lakes to nearly 1.5 mm/year directed toward the interior of Hudson Bay at stations adjacent to its shoreline. Here, the velocity uncertainties are estimated at less than 0.6 mm/year for the horizontal component and 1.1 mm/year for the vertical component. A comparison between the observed velocities and GIA model predictions, for a limited range of Earth models, shows a better fit to the observations for the Earth model with the smallest upper mantle viscosity and the largest lower mantle viscosity. However, the

  7. La implementación de programas de educación en medios: el caso Ontario Implementing Mandates in Media Education: The Ontario Experience

    Directory of Open Access Journals (Sweden)

    Barry Duncan

    2009-03-01

    Full Text Available Este artículo expone un informe sobre la educación en alfabetización mediática en Ontario. Brinda una visión general del plan de estudios para la alfabetización mediática propuesta por el gobierno regional. Específicamente, describe varias aproximaciones para la enseñanza acerca de los medios, así como la teoría que apuntala los documentos del plan de estudios y las prácticas en el aula. También describe el trabajo de organizaciones y asociaciones clave que ayudaron a priorizar la educación en alfabetización mediática, y ofrece sugerencias para el desarrollo exitoso y la implementación de programas de alfabetización mediática. La conclusión discute los retos y el curso futuro de la alfabetización mediática más allá del caso Ontario, centrándose en nueve tesis clave para el éxito en su implementación en todo el mundo. This analysis presents a report on media literacy education in Ontario. It provides an overview of the curriculum for media literacy that is mandated by the provincial government. Specifically, it describes various approaches for teaching about the media as well as the theory that underpins curriculum documents and classroom practices. The analysis also describes the work of key organizations and partnerships that helped prioritize media literacy education, and offers suggestions for the successful development and implementation of media literacy programs. The conclusion discusses the challenges and future directions for media literacy beyond the Ontario case, focusing on nine key tenets for success in its implementation worldwide.

  8. Drinking water contamination in Walkerton, Ontario: positive resolutions from a tragic event.

    Science.gov (United States)

    Holme, R

    2003-01-01

    In May 2000, Escherichia coli O157:H7 and Campylobacter jejuni contaminated the drinking water supply in Walkerton, Ontario. Seven people died and over 2,000 were ill as a result. The Ontario Provincial Government set up a judicial Inquiry into the circumstances surrounding the outbreak and also moved quickly to introduce a new Drinking Water Regulation that incorporated some significant requirements for drinking water providers. The Inquiry itself was in three parts: (a) part 1 related to the events that occurred in Walkerton and why the water contamination occurred; (b) part 1A related specifically to the role of the Provincial Government in the event; and (c) part 2 related to the future of drinking water safety in Ontario with potential to influence regulation on a wider basis. A number of other actions were taken after Walkerton. In August 2000, the Ontario Government, through the Regulatory body, the Ontario Ministry of the Environment (MOE) (a) re-issued and revised the Ontario Drinking Water Objectives (ODWO) as the Ontario Drinking Water Standards (ODWS) and (b) introduced new regulations governing drinking water in Ontario--the Ontario Drinking Water Protection Regulation. One of the key features of the Drinking Water Protection Regulation was the requirement to produce an independent Engineers' Report on all water systems. This paper provides a unique perspective on the Walkerton tragedy and its aftermath. The author was active in many aspects of the resulting activity (Chair of the Ontario Water Works Association's (a section of the AWWA) Special Committee involved in Part 2 of the Walkerton Inquiry; author of several of the Engineers' Reports mandated by Regulation; reviewer on behalf of the Regulator of Engineers' Reports submitted by others). The Engineers' Reports were of interest because (1) the drinking water providers (mostly municipalities) were mandated by regulation to complete the Reports by specific dates and are paying for the Reports, (2

  9. Licensed reactor nuclear safety criteria applicable to DOE reactors

    Energy Technology Data Exchange (ETDEWEB)

    1993-11-01

    This document is a compilation and source list of nuclear safety criteria that the Nuclear Regulatory Commission (NRC) applies to licensed reactors; it can be used by DOE and DOE contractors to identify NRC criteria to be evaluated for application to the DOE reactors under their cognizance. The criteria listed are those that are applied to the areas of nuclear safety addressed in the safety analysis report of a licensed reactor. They are derived from federal regulations, USNRC regulatory guides, Standard Review Plan (SRP) branch technical positions and appendices, and industry codes and standards.

  10. University Reactor Conversion Lessons Learned Workshop for Purdue University Reactor

    Energy Technology Data Exchange (ETDEWEB)

    Eric C. Woolstenhulme; Dana M. Hewit

    2008-09-01

    The Department of Energy’s Idaho National Laboratory, under its programmatic responsibility for managing the University Research Reactor Conversions, has completed the conversion of the reactor at Purdue University Reactor. With this work completed and in anticipation of other impending conversion projects, the INL convened and engaged the project participants in a structured discussion to capture the lessons learned. The lessons learned process has allowed us to capture gaps, opportunities, and good practices, drawing from the project team’s experiences. These lessons will be used to raise the standard of excellence, effectiveness, and efficiency in all future conversion projects.

  11. Neutronic Reactor Shield

    Science.gov (United States)

    Fermi, Enrico; Zinn, Walter H.

    The argument of the present Patent is a radiation shield suitable for protection of personnel from both gamma rays and neutrons. Such a shield from dangerous radiations is achieved to the best by the combined action of a neutron slowing material (a moderator) and a neutron absorbing material. Hydrogen is particularly effective for this shield since it is a good absorber of slow neutrons and a good moderator of fast neutrons. The neutrons slowed down by hydrogen may, then, be absorbed by other materials such as boron, cadmium, gadolinium, samarium or steel. Steel is particularly convenient for the purpose, given its effectiveness in absorbing also the gamma rays from the reactor (both primary gamma rays and secondary ones produced by the moderation of neutrons). In particular, in the present Patent a shield is described, made of alternate layers of steel and Masonite (an hydrolized ligno-cellulose material). The object of the present Patent is not discussed in any other published paper.

  12. Neutrino Experiments at Reactors

    Science.gov (United States)

    Reines, F.; Gurr, H. S.; Jenkins, T. L.; Munsee, J. H.

    1968-09-09

    A description is given of the electron-antineutrino program using a large fission reactor. A search has been made for a neutral weak interaction via the reaction (electron antineutrino + d .> p + n + electron antineutrino), the reaction (electron antineutrino + d .> n + n + e{sup +}) has now been detected, and an effort is underway to observe the elastic scattering reaction (electron antineutrino + e{sup -} .> electron antineutrino + e{sup -}) as well as to measure more precisely the reaction (electron antineutrino + p .> n + e{sup+}). The upper limit on the elastic scattering reaction which we have obtained with our large composite NaI, plastic, liquid scintillation detector is now about 50 times the predicted value.

  13. Status of rainbow smelt in the U.S. waters of Lake Ontario, 2013: Section 12 of NYSDEC Lake Ontario Unit annual report 2013

    Science.gov (United States)

    Weidel, Brian C.; Connerton, Michael J.

    2014-01-01

    Rainbow Smelt Osmerus mordax are the second most abundant pelagic prey fish in Lake Ontario after Alewife Alosa psuedoharengus. The 2013, USGS/NYSDEC bottom trawl assessment indicated the abundance of Lake Ontario age-1 and older Rainbow Smelt decreased by 69% relative to 2012. Length frequency-based age analysis indicated that age-1 Rainbow Smelt constituted approximately 50% of the population, which is similar to recent trends where the proportion of age-1 has ranged from 95% to 42% of the population. While they constituted approximately half of the catch, the overall abundance index for age 1 was one of the lowest observed in the time series, potentially a result of cannibalism from the previous year class. Combined data from all bottom trawl assessments along the southern shore and eastern basin indicate the proportion of the fish community that is Rainbow Smelt has declined over the past 30 years. In 2013 the proportion of the pelagic fish catch (only pelagic species) that was Rainbow Smelt was the second lowest in the time series at 3.1%. Community diversity indices, based on bottom trawl catches, indicate that Lake Ontario fish community diversity, as assessed by bottom trawls, has sharply declined over the past 36 years and in 2013 the index was the lowest value in the time series. Much of this community diversity decline is driven by changes in the pelagic fish community and dominance of Alewife.

  14. Contaminated groundwater characterization at the Chalk River Laboratories, Ontario, Canada

    Energy Technology Data Exchange (ETDEWEB)

    Schilk, A.J.; Robertson, D.E.; Thomas, C.W.; Lepel, E.A. [Pacific Northwest National Lab., Richland, WA (United States); Champ, D.R.; Killey, R.W.D.; Young, J.L.; Cooper, E.L. [Chalk River Labs., Chalk River, Ontario (Canada)

    1993-03-01

    The licensing requirements for the disposal of low-level radioactive waste (10 CFR 61) specify the performance objectives and technical requisites for federal and commercial land disposal facilities, the ultimate goal of which is to contain the buried wastes so that the general population is adequately protected from harmful exposure to any released radioactive materials. A major concern in the operation of existing and projected waste disposal sites is subterranean radionuclide transport by saturated or unsaturated flow, which could lead to the contamination of groundwater systems as well as uptake by the surrounding biosphere, thereby directly exposing the general public to such materials. Radionuclide transport in groundwater has been observed at numerous commercial and federal waste disposal sites [including several locations within the waste management area of Chalk River Laboratories (CRL)], yet the physico-chemical processes that lead to such migration are still not completely understood. In an attempt to assist in the characterization of these processes, an intensive study was initiated at CRL to identify and quantify the mobile radionuclide species originating from three separate disposal sites: (a) the Chemical Pit, which has received aqueous wastes containing various radioisotopes, acids, alkalis, complexing agents and salts since 1956, (b) the Reactor Pit, which has received low-level aqueous wastes from a reactor rod storage bay since 1956, and (c) the Waste Management Area C, a thirty-year-old series of trenches that contains contaminated solid wastes from CRL and various regional medical facilities. Water samples were drawn downgradient from each of the above sites and passed through a series of filters and ion-exchange resins to retain any particulate and dissolved or colloidal radionuclide species, which were subsequently identified and quantified via radiochemical separations and gamma spectroscopy. These groundwaters were also analyzed for anions

  15. Reactor service life extension program

    Energy Technology Data Exchange (ETDEWEB)

    Caskey, G.R.; Sindelar, R.L.; Ondrejcin, R.S.; Baumann, E.W.

    1990-12-31

    A review of the Savannah River Site production reactor systems was initiated in 1980 and led to implementation of the Reactor Materials Program in 1984 to assess reactor safety and reactor service life. The program evaluated performance of the reactor tanks, primary coolant piping, and thermal shields, components of welded construction that were fabricated from Type 304 stainless steel. The structural integrity analysis of the primary coolant system has shown that the pressure boundary is not susceptible to gross rupture, including a double ended guillotine break or equivalent large area bank. Residual service life is potentially limited by two material degradation modes, irradiation damage and intergranular stress corrosion cracking. Analysis of the structural integrity of the tanks and piping has shown that continued safe operation of the reactors for several additional decades is not limited by the material performance of the primary coolant system. Although irradiation damage has not degraded material behavior to an unacceptable level, past experience has revealed serious difficulties with repair welding on irradiated stainless steel. Stress corrosion can be mitigated by newly identified limits on impurity concentrations in the coolant water and by stress mitigation of weld residual stresses. Work continues in several areas: the effects of helium on mechanical behavior of irradiated stainless steel; improved weld methods for piping and the reactor tanks; and a surveillance program to track irradiation effects on the tank walls.

  16. Reactor service life extension program

    Energy Technology Data Exchange (ETDEWEB)

    Caskey, G.R.; Sindelar, R.L.; Ondrejcin, R.S.; Baumann, E.W.

    1990-01-01

    A review of the Savannah River Site production reactor systems was initiated in 1980 and led to implementation of the Reactor Materials Program in 1984 to assess reactor safety and reactor service life. The program evaluated performance of the reactor tanks, primary coolant piping, and thermal shields, components of welded construction that were fabricated from Type 304 stainless steel. The structural integrity analysis of the primary coolant system has shown that the pressure boundary is not susceptible to gross rupture, including a double ended guillotine break or equivalent large area bank. Residual service life is potentially limited by two material degradation modes, irradiation damage and intergranular stress corrosion cracking. Analysis of the structural integrity of the tanks and piping has shown that continued safe operation of the reactors for several additional decades is not limited by the material performance of the primary coolant system. Although irradiation damage has not degraded material behavior to an unacceptable level, past experience has revealed serious difficulties with repair welding on irradiated stainless steel. Stress corrosion can be mitigated by newly identified limits on impurity concentrations in the coolant water and by stress mitigation of weld residual stresses. Work continues in several areas: the effects of helium on mechanical behavior of irradiated stainless steel; improved weld methods for piping and the reactor tanks; and a surveillance program to track irradiation effects on the tank walls.

  17. Assessment of torsatrons as reactors

    Energy Technology Data Exchange (ETDEWEB)

    Lyon, J.F. (Oak Ridge National Lab., TN (United States)); Painter, S.L. (Australian National Univ., Canberra, ACT (Australia))

    1992-12-01

    Stellarators have significant operational advantages over tokamaks as ignited steady-state reactors because stellarators have no dangerous disruptions and no need for continuous current drive or power recirculated to the plasma, both easing the first wall, blanket, and shield design; less severe constraints on the plasma parameters and profiles; and better access for maintenance. This study shows that a reactor based on the torsatron configuration (a stellarator variant) could also have up to double the mass utilization efficiency (MUE) and a significantly lower cost of electricity (COE) than a conventional tokamak reactor (ARIES-I) for a range of assumptions. Torsatron reactors can have much smaller coil systems than tokamak reactors because the coils are closer to the plasma and they have a smaller cross section (higher average current density because of the lower magnetic field). The reactor optimization approach and the costing and component models are those used in the current stage of the ARIES-I tokamak reactor study. Typical reactor parameters for a 1-GW(e) Compact Torsatron reactor example are major radius R[sub 0] = 6.6-8.8 m, on-axis magnetic field B[sup 0] = 4.8-7.5 T, B[sub max] (on coils) = 16 T, MUE 140-210 kW(e)/tonne, and COE (in constant 1990 dollars) = 67-79 mill/kW(e)h. The results are relatively sensitive to assumptions on the level of confinement improvement and the blanket thickness under the inboard half of the helical windings but relatively insensitive to other assumptions.

  18. Safety of VVER-440 reactors

    CERN Document Server

    Slugen, Vladimir

    2011-01-01

    Safety of VVER-440 Reactors endeavours to promote an increase in the safety of VVER-440 nuclear reactors via the improvement of fission products limitation systems and the implementation of special non-destructive spectroscopic methods for materials testing. All theoretical and experimental studies performed the by author over the last 25 years have been undertaken with the aim of improving VVER-440 defence in depth, which is one of the most important principle for ensuring safety in nuclear power plants. Safety of VVER-440 Reactors is focused on the barrier system through which the safety pri

  19. Random processes in nuclear reactors

    CERN Document Server

    Williams, M M R

    1974-01-01

    Random Processes in Nuclear Reactors describes the problems that a nuclear engineer may meet which involve random fluctuations and sets out in detail how they may be interpreted in terms of various models of the reactor system. Chapters set out to discuss topics on the origins of random processes and sources; the general technique to zero-power problems and bring out the basic effect of fission, and fluctuations in the lifetime of neutrons, on the measured response; the interpretation of power reactor noise; and associated problems connected with mechanical, hydraulic and thermal noise sources

  20. Reactor neutrons in nuclear astrophysics

    Science.gov (United States)

    Reifarth, René; Glorius, Jan; Göbel, Kathrin; Heftrich, Tanja; Jentschel, Michael; Jurado, Beatriz; Käppeler, Franz; Köster, Ulli; Langer, Christoph; Litvinov, Yuri A.; Weigand, Mario

    2017-09-01

    The huge neutron fluxes offer the possibility to use research reactors to produce isotopes of interest, which can be investigated afterwards. An example is the half-lives of long-lived isotopes like 129I. A direct usage of reactor neutrons in the astrophysical energy regime is only possible, if the corresponding ions are not at rest in the laboratory frame. The combination of an ion storage ring with a reactor and a neutron guide could open the path to direct measurements of neutron-induced cross sections on short-lived radioactive isotopes in the astrophysically interesting energy regime.

  1. Concept for LEU Burst Reactor

    Energy Technology Data Exchange (ETDEWEB)

    Klein, Steven Karl [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Kimpland, Robert Herbert [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2016-03-07

    Design and performance of a proposed LEU burst reactor are sketched. Salient conclusions reached are the following: size would be ~1,500 kg or greater, depending on the size of the central cavity; internal stresses during burst require split rings for relief; the reactor would likely require multiple control and safety rods for fine control; the energy spectrum would be comparable to that of HEU machines; and burst yields and steady-state power levels will be significantly greater in an LEU reactor.

  2. Nuclear reactor downcomer flow deflector

    Energy Technology Data Exchange (ETDEWEB)

    Gilmore, Charles B. (Greensburg, PA); Altman, David A. (Pittsburgh, PA); Singleton, Norman R. (Murrysville, PA)

    2011-02-15

    A nuclear reactor having a coolant flow deflector secured to a reactor core barrel in line with a coolant inlet nozzle. The flow deflector redirects incoming coolant down an annulus between the core barrel and the reactor vessel. The deflector has a main body with a front side facing the fluid inlet nozzle and a rear side facing the core barrel. The rear side of the main body has at least one protrusion secured to the core barrel so that a gap exists between the rear side of the main body adjacent the protrusion and the core barrel. Preferably, the protrusion is a relief that circumscribes the rear side of the main body.

  3. Fuel Fabrication and Nuclear Reactors

    Energy Technology Data Exchange (ETDEWEB)

    Karpius, Peter Joseph [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2017-02-02

    The uranium from the enrichment plant is still in the form of UF6. UF6 is not suitable for use in a reactor due to its highly corrosive chemistry as well as its phase diagram. UF6 is converted into UO2 fuel pellets, which are in turn placed in fuel rods and assemblies. Reactor designs are variable in moderators, coolants, fuel, performance etc.The dream of energy ‘too-cheap to meter’ is no more, and now the nuclear power industry is pushing ahead with advanced reactor designs.

  4. The Impact of Canadian Social Discourses on L2 Writing Pedagogy in Ontario

    Science.gov (United States)

    Kalan, Amir

    2013-01-01

    This paper attempts to illustrate the impact of Canadian social, political, and academic discourses on second language writing pedagogy in Ontario schools. Building upon the views that regard teacher knowledge as teachers' sociocultural interactions and lived experiences, and not merely intellectual capabilities gained within teacher preparation,…

  5. Lottery promotions at the point-of-sale in Ontario, Canada.

    Science.gov (United States)

    Planinac, Lynn C; Cohen, Joanna E; Reynolds, Jennifer; Robinson, Daniel J; Lavack, Anne; Korn, David

    2011-06-01

    We documented the extent of point-of-sale (POS) lottery promotions in Ontario, Canada and the relationship between lottery promotions and store and city characteristics. This is the first quantitative study of POS lottery promotions. A total of 366 stores-independent and chain convenience stores, gas stations and grocery stores-were visited across 20 cities in Ontario. Data collectors unobtrusively observed the type of lottery promotions in each store and completed a data collection checklist. A lottery promotion index was created and hierarchical linear modeling (HLM) was conducted to examine the relationship between extent of lottery promotions and independent variables such as neighbourhood socioeconomic status and city prevalence of lottery ticket purchasing. POS lottery promotions were widespread across Ontario, with the highest level of promotion found in independent convenience stores. In the multivariable HLM model, none of the remaining independent variables remained statistically significant, except for store type. Lottery promotions are extensive at the POS in Ontario. These findings can help initiate discussions around the appropriateness and possible future regulation of this form of advertising.

  6. Education as a Spectral Technology: Corporate Culture at Work in Ontario's Schools

    Science.gov (United States)

    Martin, Susan Marie

    2012-01-01

    This paper addresses the sweeping neoliberal reforms implemented in Ontario's schools in 2000, and conceptualises them within the terms of "millennial capitalism" (Comaroff & Comaroff, 2000). A close reading of secondary school curriculum documents and the umbrella policies that shape education from ages 5 to 18 years reveals…

  7. 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 thi

  8. Ontario Universities Benefits Survey, 1990-91: Part I, Benefits Excluding Pensions.

    Science.gov (United States)

    Council of Ontario Universities, Toronto.

    The report details, in tabular form, non-pension benefits offered by each of 17 Ontario universities. These include: supplementary health insurance; long term disability; sick leave entitlement; sick leave-benefits continuance; long term disability-benefits continuance; life insurance; survivor benefit; dental plan; post-retirement benefits;…

  9. Ontario University Benefits Survey. Part I (All Benefits Excluding Pensions). December 1, 1979.

    Science.gov (United States)

    University of Western Ontario, London.

    Results of a survey of benefits (excluding pensions) provided by Ontario universities are presented. Responses are presented by university concerning the following aspects of general benefits: administration and insurance plans, communication of benefits, proposed changes in benefits, provision of life and dismemberment insurance, and maternity…

  10. An Exploration of the Implementation of Restorative Justice in an Ontario Public School

    Science.gov (United States)

    Reimer, Kristin

    2011-01-01

    This qualitative case study explores the implementation of restorative justice within one Ontario Public School. Restorative justice is a philosophy and a process for dealing with harmful behaviour, viewing such behaviour as a violation of relationships, not rules. My research seeks to present how restorative justice has been implemented in one…

  11. A Reexamination of Ontario's Science Curriculum: Toward a More Inclusive Multicultural Science Education?

    Science.gov (United States)

    Mujawamariya, Donatille; Hujaleh, Filsan; Lima-Kerckhoff, Ashley

    2014-01-01

    The rapid diversification of communities in Ontario has necessitated the provincial government to reevaluate public school curriculums and policies to make schools more inclusive and reflective of its diverse population. This article critically analyzes the content of the latest revised science curricula for Grades 1 to 10 and assesses the degree…

  12. Positivism and Post-World War I Elementary School Reform in Ontario

    Science.gov (United States)

    Milewski, Patrice

    2012-01-01

    Following the end of World War I, the Ontario Department of Education initiated a series of reforms aimed at both elementary and secondary schooling. This article examines the reforms that were made to elementary school curriculum and pedagogy. These were initiated within the context of a call for a general reconstruction of education and society…

  13. Financial Report of Ontario Universities, 1993-94. Volume I - Universities.

    Science.gov (United States)

    Council of Ontario Universities, Toronto.

    This report provides detailed financial information for provincially-assisted colleges and universities in Ontario (Canada) for the fiscal year ended April 30, 1994. It describes university accounting procedures, principles for reporting financial data, and definitions. Nine tables provide summary information on revenue, expenses, fund balances,…

  14. Regulatory and institutional developments in the Ontario wine and grape industry

    Directory of Open Access Journals (Sweden)

    Carew R

    2012-09-01

    Full Text Available Richard Carew,1 Wojciech J Florkowski21Agriculture and Agri-Food Canada, Pacific Agri-Food Research Centre, Summerland, BC, Canada; 2Department of Agricultural and Applied Economics, University of Georgia, Griffin, GA, USAAbstract: The Ontario wine industry has undergone major transformative changes over the last two decades. These have corresponded to the implementation period of the Ontario Vintners Quality Alliance (VQA Act in 1999 and the launch of the Winery Strategic Plan, "Poised for Greatness," in 2002. While the Ontario wine regions have gained significant recognition in the production of premium quality wines, the industry is still dominated by a few large wine companies that produce the bulk of blended or "International Canadian Blends" (ICB, and multiple small/mid-sized firms that produce principally VQA wines. This paper analyzes how winery regulations, industry changes, institutions, and innovation have impacted the domestic production, consumption, and international trade, of premium quality wines. The results of the study highlight the regional economic impact of the wine industry in the Niagara region, the success of small/mid-sized boutique wineries producing premium quality wines for the domestic market, and the physical challenges required to improve domestic VQA wine retail distribution and bolster the international trade of wine exports. Domestic success has been attributed to the combination of natural endowments, entrepreneurial talent, established quality standards, and the adoption of improved viticulture practices.Keywords: Ontario, wine, quality standards

  15. Educational Technology Decision-Making: Technology Acquisition for 746,000 Ontario Students

    Science.gov (United States)

    Ribeiro, Jason

    2016-01-01

    The author explores the technology procurement process in Ontario's publicly funded school districts to determine if it is aligned with relevant research, is grounded in best practices, and enhances student learning. Using a qualitative approach, 10 senior leaders (i.e., chief information officers, superintendents, etc.) were interviewed to reveal…

  16. Adolescent Tobacco and Cannabis Use: Young Adult Outcomes from the Ontario Child Health Study

    Science.gov (United States)

    Georgiades, Katholiki; Boyle, Michael H.

    2007-01-01

    Background: This study examines the longitudinal associations between adolescent tobacco and cannabis use and young adult functioning. Methods: Data for analysis come from the Ontario Child Health Study (OCHS), a prospective study of child health, psychiatric disorder and adolescent substance use in a general population sample that began in 1983,…

  17. 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

  18. 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

  19. The Muirkirk Mammoth : A Late Pleistocene woolly mammoth (Mammuthus primigenius) skeleton from southern Ontario, Canada

    NARCIS (Netherlands)

    Harington, C. R.; Mol, Dick; van der Plicht, Johannes

    2012-01-01

    The Muirkirk Mammoth, found in 1895 2.4 km northeast of the village of Muirkirk in southern Ontario, is the most complete woolly mammoth (Mammuthus primigenius) skeleton known from Canada. Approximate tusk measurements and extreme wear on the sixth molars indicate it is best referred to an old male.

  20. Successfully Attaining a Dietetic Internship Position in Ontario on the First Attempt: A Descriptive Survey.

    Science.gov (United States)

    Siswanto, Olivia; Brady, Jennifer; Gingras, Jacqui

    2015-03-01

    We explored the characteristics of Ontario-based dietetic internship program applicants who were successful upon their first application attempt, and we made comparisons between those who were successful and unsuccessful on their first internship application attempt. A 32-item online survey was distributed to graduates from nutrition programs in Ontario and to members of the Dietitians of Canada Student Network, Toronto Home Economics Association, and Ontario Home Economists in Business. Data from a previous study examining the characteristics of unsuccessful internship applicants were obtained from the authors to compare the two groups. Respondents (n = 76) were mostly female (97%), 20-25 years of age (67%), and had a previous degree (46%). Compared with those who were unsuccessful on their first internship application attempt, those who were successful had a significantly higher mean cGPA (3.69 ± 0.39 vs. 3.35 ± 0.41), were more likely to have a prior degree (46% vs. 29%), spent more time preparing their internship application package, and perceived their internship application packages to be stronger. Despite some differences, most applicants met the minimum cGPA requirement outlined by internship programs in Ontario. More internship opportunities can help increase the diversity and human potential in the dietetic profession.

  1. Colleges of Applied Arts and Technology of Ontario. Background Papers on Current Issues.

    Science.gov (United States)

    Association of Colleges of Applied Arts and Technology of Ontario, Willowdale.

    Background information is provided on a number of conditions affecting Ontario's community colleges. The first section, dealing with financial issues, considers the college environment in the 1980s; examines the provincial government's perspective on priorities, the allocation process, government funding, and budgetary expenditures and trends; and…

  2. Rates of Mental Illness and Associated Academic Impacts in Ontario's College Students

    Science.gov (United States)

    Holmes, Alana; Silvestri, Robert

    2016-01-01

    Staff at campus-based counselling and disability centres in 15 of Ontario's 24 community colleges completed 3,536 surveys on 1,964 individual students querying the presence of mental illness and academic challenges as reported by students accessing these services. Survey data were analyzed to determine prevalence rates of mental disorders and…

  3. Muse, Ruse, Subterfuge: Transdisciplinary "Praxis" in Ontario's Post-Secondary Bricolage?

    Science.gov (United States)

    Mitchell, Richard C.; Moore, Shannon A.

    2015-01-01

    In late 2013, Canada's national newspaper reported that the implementation of Ontario's "differentiation policy framework" was the province's "boldest step yet to compel universities and colleges to make hard choices about how they spend their resources...a draft policy designed to stretch limited provincial dollars by narrowing…

  4. What Do Teachers Need? An Exploration of Evidence-Informed Practice for Classroom Assessment in Ontario

    Science.gov (United States)

    Cooper, Amanda; Klinger, Don A.; McAdie, Patricia

    2017-01-01

    Background: Within the realm of public education, there is a well-known "knowledge to practice gap" on current conceptions of classroom assessment. A collaborative research project undertaken by the Elementary Teachers' Federation of Ontario (ETFO) and a research team at Queen's University explored the roots of this gap from the…

  5. Alternative Pathways to Legitimacy: Promotional Practices in the Ontario For-Profit College Sector

    Science.gov (United States)

    Pizarro Milian, Roger; Quirke, Linda

    2017-01-01

    This study empirically examines how for-profit career colleges in Ontario, Canada market themselves to prospective students. It uses a mixed-methods approach to review the content of 489 online promotional profiles representing 375 unique for-profit colleges. It finds that for-profit colleges adopt several distinct marketing strategies, including…

  6. The importance of trans-boundary contributions to elevated smog levels in Ontario

    Energy Technology Data Exchange (ETDEWEB)

    Yap, D.; Fraser, D.; Kiely, P.; Cheng, C.; De Brou, G.; Reid, N. [Ontario Ministry of the Environment, Toronto, ON (Canada). Environmental Monitoring and Reporting Branch

    2004-07-01

    The state of air quality in Ontario is often linked to distinct weather patterns that affect the lower Great Lakes area. Smog levels vary from one year to another due to transboundary contributions during warm south to southwesterly airflow conditions. It was noted that a significant proportion of Ontario's smog is a result of transfrontier pollution from neighbouring industrial and urbanized areas in the United States. Ozone and fine particulate matter (PM{sub 2.5}) are both elevated during the summer. Episodes of PM{sub 2.5} smog occur much less often during the winter and are associated mostly with stagnant conditions and local build-up of pollutants. Although the impact of transboundary smog is prevalent in southwestern Ontario, the Georgian Bay area has recorded higher levels of pollutants in Michigan and Lake Huron. This occurs mostly during the summer when the flow of polluted air crosses northern Michigan and Lake Huron before entering into Ontario.

  7. Tensions and Fissures: The Politics of Standardised Testing and Accountability in Ontario, 1995-2015

    Science.gov (United States)

    Pinto, Laura Elizabeth

    2016-01-01

    While Ontario has received international accolades for its enactment of province-wide standardised testing upon the formation of the Education Quality and Accountability Office (EQAO), a closer look at provincial assessments over a 20-year span reveals successes as well as systemic tensions and fissures. The purpose of this paper is twofold.…

  8. Legal requirements for human-health based appeals of wind energy projects in ontario.

    Science.gov (United States)

    Engel, Albert M

    2014-01-01

    In 2009, the government of the province of Ontario, Canada passed new legislation to promote the development of renewable energy facilities, including wind energy facilities in the province. Throughout the legislative process, concerns were raised with respect to the effect of wind energy facilities on human health. Ultimately, the government established setbacks and sound level limits for wind energy facilities and provided Ontario residents with the right to appeal the approval of a wind energy facility on the ground that engaging in the facility in accordance with its approval will cause serious harm to human health. The first approval of a wind facility under the new legislation was issued in 2010 and since then, Ontario's Environmental Review Tribunal as well as Ontario's courts has been considering evidence proffered by appellants seeking revocation of approvals on the basis of serious harm to human health. To date, the evidence has been insufficient to support the revocation of a wind facility approval. This article reviews the legal basis for the dismissal of human-health based appeals.

  9. Ten years of photonics education at the college level in Ontario: results and by-products

    Science.gov (United States)

    Nantel, Marc

    2010-08-01

    In 2000, there was no way for an Ontario student to obtain a credential in optics, laser or photonics without going through graduate school. This was in, arguably, the world-leading jurisdiction in photonics-enabled telecommunications industry. To alleviate this problem and supply the job market with highly-qualified people in the field of optics and photonics, the Ontario Centres of Excellence - then as Photonics Research Ontario - partnered with Algonquin College (Ottawa) and Niagara College (Welland) to establish over the past decade a suite of programs: a 1-year Certificate in Advanced Lasers, a 2-year Diploma for Photonics Engineering Technician, a 3-year Diploma for Photonics Engineering Technologists and a 4-year Bachelor of Applied Technology - Photonics. Much has been learnt along the way - the crucial need for industrial partner and government support, for example - and many course corrections had to be made (telecom bust, anyone?). The author will share the results of this 10-year journey so far, the lessons learnt, and a view to the next ten years for these programs and photonics education in Ontario in general.

  10. Long-Run Impact of the Thirty Cent Revision in Ontario's Minimum Wage on Five Industries.

    Science.gov (United States)

    McKenna, Ian B.

    To determine the effect of a legislated increase in the minimum wage in Ontario, 219 establishments in five industries were surveyed. The industries were shoe factories; luggage, handbag, and small leather goods manufacturers; hosiery mills, children's clothing industry; and the foundation garment industry. Data were gathered at three different…

  11. The Ontario Energy Board`s draft standard supply service code: effects on air quality

    Energy Technology Data Exchange (ETDEWEB)

    Gibbons, J.; Bjorkquist, S. [Ontario Clean Air Alliance, Toronto, ON (Canada)

    1999-06-29

    The Ontario Clean Air Alliance (OCAA), a coalition of 67 organizations, takes issue with the Ontario Energy Board`s draft document `Standard Supply Service Code`, particularly sections 2.2.2. and 2.5.2 which they claim are not in the public interest unless the Ontario government implements the OCAA`s recommended emission caps. The alliance is of the view that without strict new environmental regulations the proposed Code would encourage the use of coal for electricity generation. Public health, the environment, consumer interests, job creation and promotion of a competitive electricity market would all be jeopardized by this development, the alliance states. The argument is supported by extensive reference to the Final Report of the Ontario Market Design Committee (MDC) which also emphasized the importance of combining the introduction of competition with appropriate environmental regulations, singling out the emission cap and trade program, and recommending that it be launched concurrently with the electricity market opening for competition. The view of the MDC was that public support for restructuring would not be forthcoming in the absence of regulatory measures to control power plant emissions. 25 refs.

  12. Evaluation of a Family and Community Engagement Strategy in Three Ontario Communities

    Science.gov (United States)

    Black, Glenda L.; Cantalini-Williams, Maria; Elliott-Johns, Susan E.; Wideman, Ron

    2013-01-01

    The Learning Partnership (TLP) initiated a Family and Community Engagement Strategy (FACES) initiative in three Ontario communities to foster active and responsive relationships among community partners and enhanced family engagement in transitions to school. A case study research design, grounded in participatory action research, was used to…

  13. Sense of Belonging and Mental Health in Hamilton, Ontario: An Intra-Urban Analysis

    Science.gov (United States)

    Kitchen, Peter; Williams, Allison; Chowhan, James

    2012-01-01

    This paper examines geographic variations in sense of community belonging in Hamilton, Ontario. It also identifies the most significant health and social factors associated with belonging in the city. The research employs data from the 2007/08 Canadian Community Health Survey for respondents aged 18 or over living in the Hamilton Census…

  14. Demand for Substance Abuse Treatment Related to Use of Crystal Methamphetamine in Ontario: An Observational Study

    Science.gov (United States)

    Brands, Bruna; Corea, Larry; Strike, Carol; Singh, Veeran-Anne S.; Behrooz, Renee C.; Rush, Brian

    2012-01-01

    Concerns about methamphetamine/crystal methamphetamine (MA) have featured prominently in the Canadian media and on addiction treatment agency agendas. We examined MA admissions at addiction treatment agencies to determine if a service gap existed. In 2006, all addiction treatment agencies (n = 124) in Ontario, Canada were invited to complete an…

  15. Increasing Research Capacity in Ontario Child Welfare Organizations: A Unique University-Child Welfare Agency Partnership

    Science.gov (United States)

    Fallon, Barbara; Trocmé, Nico; Van Wert, Melissa; Budau, Krista; Ballantyne, Mary; Lwin, Kristen

    2015-01-01

    The objective of this article is to describe the successes and challenges of a unique knowledge mobilization initiative that was funded through the Social Sciences and Humanities Research Council of Canada. This initiative focused on promoting knowledge mobilization by increasing the capacity of child welfare organizations in Ontario to conduct…

  16. Education as a Spectral Technology: Corporate Culture at Work in Ontario's Schools

    Science.gov (United States)

    Martin, Susan Marie

    2012-01-01

    This paper addresses the sweeping neoliberal reforms implemented in Ontario's schools in 2000, and conceptualises them within the terms of "millennial capitalism" (Comaroff & Comaroff, 2000). A close reading of secondary school curriculum documents and the umbrella policies that shape education from ages 5 to 18 years reveals how…

  17. Induction Programs in Ontario Schools: Raising Questions about Pre-Service Programs and Practica.

    Science.gov (United States)

    Cole, Ardra; McNay, Margaret

    1989-01-01

    Views the first-year teacher induction program as a logical extension of the student teaching experience and the next step in long-term teacher development. Outlines the goals of pre-service practica in Ontario universities and suggests related goals for induction programs. Contains 17 references. (SV)

  18. Youth Environmental Science Outreach in the Mushkegowuk Territory of Subarctic Ontario, Canada

    Science.gov (United States)

    Karagatzides, Jim D.; Kozlovic, Daniel R.; De Iuliis, Gerry; Liberda, Eric N.; General, Zachariah; Liedtke, Jeff; McCarthy, Daniel D.; Gomez, Natalya; Metatawabin, Daniel; Tsuji, Leonard J. S.

    2011-01-01

    We connected youth of the Mushkegowuk Territory (specifically Fort Albany First Nation) with environmental science and technology mentors in an outreach program contextualized to subarctic Ontario that addressed some of the environmental concerns identified by members of Fort Albany First Nation. Most activities were community-based centering on…

  19. Evaluation of a Family and Community Engagement Strategy in Three Ontario Communities

    Science.gov (United States)

    Black, Glenda L.; Cantalini-Williams, Maria; Elliott-Johns, Susan E.; Wideman, Ron

    2013-01-01

    The Learning Partnership (TLP) initiated a Family and Community Engagement Strategy (FACES) initiative in three Ontario communities to foster active and responsive relationships among community partners and enhanced family engagement in transitions to school. A case study research design, grounded in participatory action research, was used to…

  20. A Review of (Elementary) School Self-Assessment Processes: Ontario and Beyond

    Science.gov (United States)

    Ryan, Thomas G.; Telfer, Leslie

    2011-01-01

    This review draws attention to issues related to school self-assessment. This process has been similarly implemented in a variety of jurisdictions globally in the past decade hence their inclusion herein as an attempt to understand the school self-assessment process which has also been developed for use in local Ontario (Canadian) elementary…

  1. Muse, Ruse, Subterfuge: Transdisciplinary "Praxis" in Ontario's Post-Secondary Bricolage?

    Science.gov (United States)

    Mitchell, Richard C.; Moore, Shannon A.

    2015-01-01

    In late 2013, Canada's national newspaper reported that the implementation of Ontario's "differentiation policy framework" was the province's "boldest step yet to compel universities and colleges to make hard choices about how they spend their resources...a draft policy designed to stretch limited provincial dollars by narrowing…

  2. Adolescent Tobacco and Cannabis Use: Young Adult Outcomes from the Ontario Child Health Study

    Science.gov (United States)

    Georgiades, Katholiki; Boyle, Michael H.

    2007-01-01

    Background: This study examines the longitudinal associations between adolescent tobacco and cannabis use and young adult functioning. Methods: Data for analysis come from the Ontario Child Health Study (OCHS), a prospective study of child health, psychiatric disorder and adolescent substance use in a general population sample that began in 1983,…

  3. Comparative diets of subyearling Atlantic salmon and subyearling coho salmon in Lake Ontario tributaries

    Science.gov (United States)

    Johnson, James H.; Ringler, Neil H.

    2016-01-01

    Restoration of Atlantic salmon (Salmo salar) in Lake Ontario could potentially be negatively affected by the presence of non-native salmonids that are naturalized in the basin. Coho salmon (Oncorhynchus kisutch) have been spawning successfully in Lake Ontario tributaries for over 40 years and their juveniles will reside in streams with juvenile Atlantic salmon for one year. This study sought to examine interspecific diet associations between these species, and to compare diets to the composition of the benthos and drift in three Lake Ontario tributaries. Aquatic insects, mainly ephemeropterans and chironomids were the major prey consumed by subyearling Atlantic salmon whereas terrestrial invertebrates made up only 3.7% of the diet. Ephemeropterans and chironomids were the primary aquatic taxa consumed by subyearling coho salmon but, as a group, terrestrial invertebrates (41.8%) were the major prey. In sympatry, Atlantic salmon fed more actively from the benthos whereas the diet of coho salmon was more similar to the drift. The different feeding pattern of each species resulted in low interspecific diet similarity. There is likely little competition between these species for food in Lake Ontario tributaries as juveniles.

  4. The Muirkirk Mammoth : A Late Pleistocene woolly mammoth (Mammuthus primigenius) skeleton from southern Ontario, Canada

    NARCIS (Netherlands)

    Harington, C. R.; Mol, Dick; van der Plicht, Johannes

    2012-01-01

    The Muirkirk Mammoth, found in 1895 2.4 km northeast of the village of Muirkirk in southern Ontario, is the most complete woolly mammoth (Mammuthus primigenius) skeleton known from Canada. Approximate tusk measurements and extreme wear on the sixth molars indicate it is best referred to an old male.

  5. The Effects on Monopsony on Strategy and Leadership in Ontario Colleges. Professional File. Number 28

    Science.gov (United States)

    Cooke, Michael

    2008-01-01

    The period 1995 to 2005 was one of significant turbulence for Ontario colleges, marked by increasing globalization, immigration, disruptions in the labour market, new technologies and dramatic reductions in government operating grants. This study examines how colleges and their leaders responded to those strategic challenges in their official…

  6. A heuristic simulation model of Lake Ontario circulation and mass balance transport

    Science.gov (United States)

    McKenna, J.E.; Chalupnicki, M.A.

    2011-01-01

    The redistribution of suspended organisms and materials by large-scale currents is part of natural ecological processes in large aquatic systems but can contribute to ecosystem disruption when exotic elements are introduced into the system. Toxic compounds and planktonic organisms spend various lengths of time in suspension before settling to the bottom or otherwise being removed. We constructed a simple physical simulation model, including the influence of major tributaries, to qualitatively examine circulation patterns in Lake Ontario. We used a simple mass balance approach to estimate the relative water input to and export from each of 10 depth regime-specific compartments (nearshore vs. offshore) comprising Lake Ontario. Despite its simplicity, our model produced circulation patterns similar to those reported by more complex studies in the literature. A three-gyre pattern, with the classic large counterclockwise central lake circulation, and a simpler two-gyre system were both observed. These qualitative simulations indicate little offshore transport along the south shore, except near the mouths of the Niagara River and Oswego River. Complex flow structure was evident, particularly near the Niagara River mouth and in offshore waters of the eastern basin. Average Lake Ontario residence time is 8 years, but the fastest model pathway indicated potential transport of plankton through the lake in as little as 60 days. This simulation illustrates potential invasion pathways and provides rough estimates of planktonic larval dispersal or chemical transport among nearshore and offshore areas of Lake Ontario. ?? 2011 Taylor & Francis.

  7. The Evolution of Online Education at a Small Northern Ontario University: Theory and Practice

    Science.gov (United States)

    Carter, Lorraine; Graham, Robert Douglas

    2012-01-01

    One of the major influences on university education in Ontario is the growing use of Internet technologies. These new technologies have led faculty and learning experts at universities to talk about online and technology-enhanced learning with a fervour not often found on most campuses. Among other things, these discussions have challenged…

  8. The Representation and Appropriation of Indigenous Cultures at Ontario Summer Camps.

    Science.gov (United States)

    Hamilton, Ty

    2003-01-01

    Interviews with directors at five Ontario summer camps found that three camps exposed children to stereotypes of Indigenous peoples and to cultural appropriation. This is inconsistent with goals of educating campers about and showing respect for Indigenous cultures. Given the current issues of land-claims and Aboriginal rights, non-Indigenous…

  9. Stressful, Hectic, Daunting: A Critical Policy Study of the Ontario Teacher Performance Appraisal System

    Science.gov (United States)

    Larsen, Marianne A.

    2009-01-01

    Teacher performance appraisal policies are a part of a global complex of accountability based teacher policies. This paper is a study of the Ontario teacher performance appraisal (TPA) system. First, the paper describes the education reform contexts associated with the origins and adoption of the TPA policy. Then the paper reports on the results…

  10. Constraints and motivations related to fishing along the Lake Ontario coast

    Science.gov (United States)

    Matthew P. Brincka; Diane M. Kuehn; Valerie. Luzadis

    2012-01-01

    The number of nonresident anglers along the Lake Ontario coast has decreased over the past 15 years. Therefore, in order to sustain a strong sport fishing industry, local businesses and tourism promoters might want to tap into the large resident angler market group. This study examines resident anglers' social, environmental, and economic constraints/facilitators...

  11. Public Attitudes toward Education in Ontario. 1984. Fifth OISE Survey. Informal Series/62.

    Science.gov (United States)

    Livingstone, D. W.; And Others

    This survey involved a representative sample of 1,046 adults who were interviewed, and a special sample of corporate executives (127) who responded to a mailed questionnaire. Chapter 1 presents findings on the Ontario public's general assessments of the quality of high school education and their dispositions toward public expenditures on various…

  12. Graduate Studies in Computer-Based Education at the Ontario Institute for Studies in Education.

    Science.gov (United States)

    Rubincam, Irvin

    This overview of the programs, activities, and facilities relating to computer-based education at the Ontario Institute for Studies in Education (OISE) includes, (1) a brief account of the history and mission of OISE; (2) a description of the OISE Computer Applications Department and its merger with the Department of Measurement and Evaluation in…

  13. Public Attitudes toward Education in Ontario, 1982. Fourth OISE Survey. Informal Series/51.

    Science.gov (United States)

    Livingstone, D. W.; And Others

    Results of the Ontario Institute for Studies in Education 1982 Survey, intended primarily to offer ongoing profiles of mass attitudes on major issues of current educational reform, are reported. In addition to documenting trends in public support for general curricular and financing options, the survey focuses on attitudes towards alternative ways…

  14. Public Attitudes Toward Education in Ontario, 1979. Second OISE Survey. Informal Series/15.

    Science.gov (United States)

    Livingstone, D. W.; Hart, D. J.

    The purpose of this annual survey is to provide basic, ongoing profiles of the educational concerns on Ontarians. The 1979 survey involved a representative sample of 1,084 adults, 18 years of age and over, who were interviewed in their homes across Ontario, as well as a special sample of corporate executives (148 respondents), who replied to a…

  15. Writings Relating to Literacy Done at the Ontario Institute for Studies in Education.

    Science.gov (United States)

    Draper, James A., Ed.

    This bibliography contains about three hundred citations of publications on aspects of literacy by faculty and research officers at the Ontario Institute for Studies in Education (OISE) in Toronto, over 45 theses completed by OISE students, and almost 40 publications by OISE graduates. The list was compiled from the results of a survey of OISE…

  16. Exploring the Digital Divide: The Use of Digital Technologies in Ontario Public Schools

    Science.gov (United States)

    Chen, Bodong

    2015-01-01

    Combining data from a school principal survey with student demographics and achievement data, the present study aimed to develop a much needed understanding of ICT usage in Ontario's K-12 public schools. Results indicated equitable first-order access to technology for schools, early integration of ICT from the earliest grades, frequent application…

  17. Youth Environmental Science Outreach in the Mushkegowuk Territory of Subarctic Ontario, Canada

    Science.gov (United States)

    Karagatzides, Jim D.; Kozlovic, Daniel R.; De Iuliis, Gerry; Liberda, Eric N.; General, Zachariah; Liedtke, Jeff; McCarthy, Daniel D.; Gomez, Natalya; Metatawabin, Daniel; Tsuji, Leonard J. S.

    2011-01-01

    We connected youth of the Mushkegowuk Territory (specifically Fort Albany First Nation) with environmental science and technology mentors in an outreach program contextualized to subarctic Ontario that addressed some of the environmental concerns identified by members of Fort Albany First Nation. Most activities were community-based centering on…

  18. Epidemiology of serogroup B invasive meningococcal disease in Ontario, Canada, 2000 to 2010

    Directory of Open Access Journals (Sweden)

    Dang Vica

    2012-08-01

    Full Text Available Abstract Background Invasive meningococcal disease (IMD caused by serogroup B is the last major serogroup in Canada to become vaccine-preventable. The anticipated availability of vaccines targeting this serogroup prompted an assessment of the epidemiology of serogroup B disease in Ontario, Canada. Methods We retrieved information on confirmed IMD cases reported to Ontario’s reportable disease database between January 1, 2000 and December 31, 2010 and probabilistically-linked these cases to Public Health Ontario Laboratory records. Rates were calculated with denominator data obtained from Statistics Canada. We calculated a crude number needed to vaccinate using the inverse of the infant ( Results A total of 259 serogroup B IMD cases were identified in Ontario over the 11-year period. Serogroup B was the most common cause of IMD. Incidence ranged from 0.11 to 0.27/100,000/year, and fluctuated over time. Cases ranged in age from 13 days to 101 years; 21.4% occurred in infants, of which 72.7% were Conclusions Although rare, the proportion of IMD caused by serogroup B has increased and currently causes most IMD in Ontario, with infants having the highest risk of disease. Although serogroup B meningococcal vaccines are highly anticipated, our findings suggest that decisions regarding publicly funding serogroup B meningococcal vaccines will be difficult and may not be based on disease burden alone.

  19. 76 FR 11436 - Application to Export Electric Energy; Ontario Power Generation

    Science.gov (United States)

    2011-03-02

    ... Application to Export Electric Energy; Ontario Power Generation AGENCY: Office of Electricity Delivery and... applied to renew its authority to transmit electric energy from the United States to Canada pursuant to... authorized OPG to transmit electric energy from the United States to Canada as a power marketer for a...

  20. An Historical Perspective on the Idea of Institutional Diversity and Differentiation in Ontario Higher Education

    Science.gov (United States)

    Skolnik, Michael L.

    2013-01-01

    Institutional differentiation has frequently been an object of interest in higher education policymaking in Ontario. Occasionally this interest has motivated policy actions intended to increase differentiation, but more often government policy has aimed at limiting institutional differentiation -- or it has had that effect by default. The focus of…

  1. Pathways from College to University: A Social Science Example from Ontario

    Science.gov (United States)

    LeSage, Ann; Samis, John; Hinch, Ron; Longo, Fabiola; DiGiuseppe, Maurice; Goodman, William; Percival, Jennifer; De La Rocha, Arlene; Rodrigues, Anna; Raby, Phil; Sanchez, Otto

    2014-01-01

    This study evaluates the impact of a College to University Pathway Program in the Faculty of Social Science and Humanities at The University of Ontario Institute of Technology. The findings support the assertion that Pathway students perform as well as or better than students who enter university directly from secondary school. This finding is…

  2. Making Schools Safe and Inclusive: Gay-Straight Alliances and School Climate in Ontario

    Science.gov (United States)

    Kitchen, Julian; Bellini, Christine

    2013-01-01

    Gay-straight alliances (GSAs) have become widespread in Ontario schools and, starting in 2012, all schools are required to permit students to form GSAs. While American research suggests that GSAs have a positive impact on school safety and inclusion, there is little research on the impact of GSAs in Canadian schools. This study, based on a survey…

  3. BACTERIOPHAGE AND MICROSPHERE TRANSPORT IN SATURATED POROUS MEDIA: FORCED-GRADIENT EXPERIMENT AT BORDEN, ONTARIO

    Science.gov (United States)

    A two-well forced-gradient experiment involving virus and microsphere transport was carried out in a sandy aquifer in Borden, Ontario, Canada. Virus traveled at least a few meters in the experiment, but virus concentrations at observation points 1 and 2.54 m away from the injecti...

  4. Know How? Show How: Experienced Teachers Share Best Practices through Ontario Program

    Science.gov (United States)

    Amato, Lindy; Anthony, Paul; Strachan, Jim

    2014-01-01

    Launched in 2007, the Teacher Learning and Leadership Program, out of Ontario, Canada, operates on the belief that classroom teachers know their learning needs and the needs of their students best. Additionally, the program assumes teachers have the greatest knowledge of how to build and foster multiple learning networks in order to share their…

  5. Discovery of the Western Palearctic bee, Megachile (Pseudomegachile) ericetorum, (Hymenoptera: Megachilidae), in Ontario Canada

    Science.gov (United States)

    The bees of North America are very diverse, including over 3500 species. Approximately thirty of these bee species are not native to this continent. Recently another non-native bee, Megachile (Pseudomegachile) ericetorum, was found in a naturalized area in Ontario, Canada. This bee nests in holes...

  6. Anthropogenic fire history and red oak forests in south-central Ontario

    Science.gov (United States)

    Daniel C. Dey; Richard P. Guyette

    2000-01-01

    The regeneration and dominance of northern red oak (Quercus rubra L.) has been associated with fire throughout eastern North America. Red oak in central Ontario grows near the northern edge of its distribution in mixed hardwood - coniferous forests under mesic conditions where it competes with more shade-tolerant species. We hypothesized that the...

  7. The Case of Dr George Gale V. the College of Physicians and Surgeons of Ontario: A Legal Analysis

    Directory of Open Access Journals (Sweden)

    Matthew Wilton

    2004-01-01

    Full Text Available On March 15, 2002, anaesthetist and pain practitioner, Dr George Gale, had his license to practice medicine in Ontario revoked by a decision of the Discipline Committee of the College of Physicians and Surgeons of Ontario (CPSO (1,2. To that point, Dr Gale had practiced medicine as an anaesthetist in Ontario without incident. The CPSO Discipline Committee hearing had taken place over 22 days in 2001 and 2002. The focus of the CPSO prosecution against Dr Gale was his pain practice conducted at a well-known pain clinic in Toronto, Ontario. By an Ontario Divisional Court decision dated October 10, 2003, the CPSO Discipline Committee decision was set aside on appeal (3. Most importantly, the Ontario Divisional Court held that the penalty of revocation levied against Dr Gale was unfair and based on several serious errors made by the Discipline Committee. A closer examination of the decisions of both the Discipline Committee and the Ontario Divisional Court will hopefully illustrate both the medical standards of practice issues for pain practitioners, and some of the perils created by the self governing activities of the CPSO. To put the Gale decision in proper context, it will be necessary for us to briefly examine the function of the CPSO and its Discipline Committee.

  8. Nuclear reactor PBMR and cogeneration; Reactor nuclear PBMR y cogeneracion

    Energy Technology Data Exchange (ETDEWEB)

    Ramirez S, J. R.; Alonso V, G., E-mail: ramon.ramirez@inin.gob.mx [ININ, Carretera Mexico-Toluca s/n, 52750 Ocoyoacac, Estado de Mexico (Mexico)

    2013-10-15

    In recent years the nuclear reactor designs for the electricity generation have increased their costs, so that at the moment costs are managed of around the 5000 US D for installed kw, reason for which a big nuclear plant requires of investments of the order of billions of dollars, the designed reactors as modular of low power seek to lighten the initial investment of a big reactor dividing the power in parts and dividing in modules the components to lower the production costs, this way it can begin to build a module and finished this to build other, differing the long term investment, getting less risk therefore in the investment. On the other hand the reactors of low power can be very useful in regions where is difficult to have access to the electric net being able to take advantage of the thermal energy of the reactor to feed other processes like the water desalination or the vapor generation for the processes industry like the petrochemical, or even more the possible hydrogen production to be used as fuel. In this work the possibility to generate vapor of high quality for the petrochemical industry is described using a spheres bed reactor of high temperature. (Author)

  9. Breeder Reactors, Understanding the Atom Series.

    Science.gov (United States)

    Mitchell, Walter, III; Turner, Stanley E.

    The theory of breeder reactors in relationship to a discussion of fission is presented. Different kinds of reactors are characterized by the cooling fluids used, such as liquid metal, gas, and molten salt. The historical development of breeder reactors over the past twenty-five years includes specific examples of reactors. The location and a brief…

  10. Evolution of the tandem mirror reactor concept

    Energy Technology Data Exchange (ETDEWEB)

    Carlson, G.A.; Logan, B.G.

    1982-03-09

    We discuss the evolution of the tandem mirror reactor concept from the original conceptual reactor design (1977) through the first application of the thermal barrier concept to a reactor design (1979) to the beginning of the Mirror Advanced Reactor Study (1982).

  11. FASTER Test Reactor Preconceptual Design Report

    Energy Technology Data Exchange (ETDEWEB)

    Grandy, C. [Argonne National Lab. (ANL), Argonne, IL (United States); Belch, H. [Argonne National Lab. (ANL), Argonne, IL (United States); Brunett, A. J. [Argonne National Lab. (ANL), Argonne, IL (United States); Heidet, F. [Argonne National Lab. (ANL), Argonne, IL (United States); Hill, R. [Argonne National Lab. (ANL), Argonne, IL (United States); Hoffman, E. [Argonne National Lab. (ANL), Argonne, IL (United States); Jin, E. [Argonne National Lab. (ANL), Argonne, IL (United States); Mohamed, W. [Argonne National Lab. (ANL), Argonne, IL (United States); Moisseytsev, A. [Argonne National Lab. (ANL), Argonne, IL (United States); Passerini, S. [Argonne National Lab. (ANL), Argonne, IL (United States); Sienicki, J. [Argonne National Lab. (ANL), Argonne, IL (United States); Sumner, T. [Argonne National Lab. (ANL), Argonne, IL (United States); Vilim, R. [Argonne National Lab. (ANL), Argonne, IL (United States); Hayes, S. [Argonne National Lab. (ANL), Argonne, IL (United States)

    2016-03-31

    The FASTER test reactor plant is a sodium-cooled fast spectrum test reactor that provides high levels of fast and thermal neutron flux for scientific research and development. The 120MWe FASTER reactor plant has a superheated steam power conversion system which provides electrical power to a local grid allowing for recovery of operating costs for the reactor plant.

  12. FASTER test reactor preconceptual design report summary

    Energy Technology Data Exchange (ETDEWEB)

    Grandy, C. [Argonne National Lab. (ANL), Argonne, IL (United States); Belch, H. [Argonne National Lab. (ANL), Argonne, IL (United States); Brunett, A. [Argonne National Lab. (ANL), Argonne, IL (United States); Heidet, F. [Argonne National Lab. (ANL), Argonne, IL (United States); Hill, R. [Argonne National Lab. (ANL), Argonne, IL (United States); Hoffman, E. [Argonne National Lab. (ANL), Argonne, IL (United States); Jin, E. [Argonne National Lab. (ANL), Argonne, IL (United States); Mohamed, W. [Argonne National Lab. (ANL), Argonne, IL (United States); Moisseytsev, A. [Argonne National Lab. (ANL), Argonne, IL (United States); Passerini, S. [Argonne National Lab. (ANL), Argonne, IL (United States); Sienicki, J. [Argonne National Lab. (ANL), Argonne, IL (United States); Sumner, T. [Argonne National Lab. (ANL), Argonne, IL (United States); Vilim, R. [Argonne National Lab. (ANL), Argonne, IL (United States); Hayes, Steven [Argonne National Lab. (ANL), Argonne, IL (United States)

    2016-02-29

    The FASTER reactor plant is a sodium-cooled fast spectrum test reactor that provides high levels of fast and thermal neutron flux for scientific research and development. The 120MWe FASTER reactor plant has a superheated steam power conversion system which provides electrical power to a local grid allowing for recovery of operating costs for the reactor plant.

  13. ADAPTIVE CONTROL SYSTEM OF INDUSTRIAL REACTORS

    Directory of Open Access Journals (Sweden)

    Vyacheslav K. Mayevski

    2014-01-01

    Full Text Available This paper describes a mathematical model of an industrial chemical reactor for production of synthetic rubber. During reactor operation the model parameters vary considerably. To create a control algorithm performed transformation of mathematical model of the reactor in order to obtain a dependency that can be used to determine the model parameters are changing during reactor operation.

  14. Nuclear research reactors activities in INVAP

    Energy Technology Data Exchange (ETDEWEB)

    Ordonez, Juan Pablo [INVAP, Bariloche (Argentina)

    2013-07-01

    This presentation describes the different activities in the research reactor field that are being carried out by INVAP. INVAP is presently involved in the design of three new research reactors in three different countries. The RA-10 is a multipurpose reactor, in Argentina, planned as a replacement for the RA-3 reactor. INVAP was contracted by CNEA for carrying out the preliminary engineering for this reactor, and has recently been contracted by CNEA for the detailed engineering. CNEA groups are strongly involved in the design of this reactor. The RMB is a multipurpose reactor, planned by CNEN from Brazil. CNEN, through REDETEC, has contracted INVAP to carry out the preliminary engineering for this reactor. As the user requirements for RA-10 and RMB are very similar, an agreement was signed between Argentina and Brasil governments to cooperate in these two projects. The agreement included that both reactors would use the OPAL reactor in Australia, design and built by INVAP, as a reference reactor. INVAP has also designed the LPRR reactor for KACST in Saudi Arabia. The LPRR is a 30 kw reactor for educational purposes. KACST initially contracted INVAP for the engineering for this reactor and has recently signed the contract with INVAP for building the reactor. General details of these three reactors will be presented.

  15. The relationship between need and capacity for multidisciplinary cardiovascular risk-reduction programs in Ontario.

    Science.gov (United States)

    Candido, Elisa; Richards, Janice A; Oh, Paul; Suskin, Neville; Arthur, Heather M; Fair, Terry; Alter, David A

    2011-01-01

    Available evidence has demonstrated survival benefits associated with multidisciplinary cardiovascular risk-reduction (CR) (ie, cardiac rehabilitation) programs. The degree to which program capacity meets eligible service demands in Ontario is unknown. We sought to estimate the supply-need care-gap associated with CR programs across regions (Local Health Integration Networks [LHINs]) in Ontario. We conducted a cross-sectional, population-based study during 2006. Administrative data provided estimates of the population eligible for multidisciplinary CR services due to (1) recent cardiovascular hospitalizations and (2) incident diabetes. An Ontario-wide survey of CR programs provided service supply estimates. The coverage rate and the absolute supply-need mismatch were use to quantify the care-gap by LHIN. Based on cardiac hospitalizations alone, 53,270 patients in Ontario in 2006 (508.7 per 100,000) were eligible for CR services; 128,869 patients (1245 per 100,000) would have been eligible if newly diagnosed (incident cases) diabetic patients were included. Capacity for CR services was 18,087 patients, corresponding to 34% coverage of the eligible population (absolute unmet needs of 35,189 individuals) if capacity was entirely dedicated to recent hospitalizations and 14% coverage (absolute unmet needs of 110,782) if services were extended to include incident diabetes patients. Marked variation in disease burden, service capacity, and supply-need mismatch was observed across regions, in which supply was not correlated with need. Despite proved benefits of multidisciplinary CR programs, unmet population needs remain high in Ontario and are unequally distributed across regions. The magnitude of unmet needs and the lack of correlation between supply and disease burden necessitate broader provincial strategies to plan, allocate, and subsidize CR programs. Copyright © 2011 Canadian Cardiovascular Society. Published by Elsevier Inc. All rights reserved.

  16. Parental perceptions of school-based influenza immunisation in Ontario, Canada: a qualitative study.

    Science.gov (United States)

    MacDougall, Donna; Crowe, Lois; Pereira, Jennifer A; Kwong, Jeffrey C; Quach, Susan; Wormsbecker, Anne E; Ramsay, Hilary; Salvadori, Marina I; Russell, Margaret L

    2014-06-05

    To understand the perspectives of Ontario parents regarding the advantages and disadvantages of adding influenza immunisation to the currently existing Ontario school-based immunisation programmes. Descriptive qualitative study. Parents of school-age children in Ontario, Canada, who were recruited using a variety of electronic strategies (social media, emails and media releases), and identified as eligible (Ontario resident, parent of one or more school-age children, able to read/write English) on the basis of a screening questionnaire. We used stratified purposeful sampling to obtain maximum variation in two groups: parents who had ever immunised at least one child against influenza or who had never done so. We conducted focus groups (teleconference or internet forum) and individual interviews to collect data. Thematic analysis was used to analyse the data. Ontario, Canada. Of the 55 participants, 16 took part in four teleconference focus groups, 35 in 6 internet forum focus groups and four in individual interviews conducted between October 2012 and February 2013. Participants who stated that a school-based influenza immunisation programme would be worthwhile for their child valued its convenience and its potential to reduce influenza transmission without interfering with the family routine. However, most thought that for a programme to be acceptable, it would need to be well designed and voluntary, with adequate parental control and transparent communication between the key stakeholder groups of public health, schools and parents. These results will benefit decision-makers in the public health and education sectors as they consider the advantages and disadvantages of immunising children in schools as part of a system-wide influenza prevention approach. Further research is needed to assess the perceptions of school board and public health stakeholders. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence

  17. The effect of the Ontario Bariatric Network on health services utilization after bariatric surgery: a retrospective cohort study

    Science.gov (United States)

    Elnahas, Ahmad; Jackson, Timothy D.; Okrainec, Allan; Austin, Peter C.; Bell, Chaim M.; Urbach, David R.

    2016-01-01

    Background: In 2009, the Ontario Bariatric Network was established to address the exploding demand by Ontario residents for bariatric surgery services outside Canada. We compared the use of postoperative hospital services between out-of-country surgery recipients and patients within the Ontario Bariatric Network. Methods: We conducted a population-based, comparative study using administrative data held at the Institute for Clinical Evaluative Sciences. We included Ontario residents who underwent bariatric surgery between 2007 and 2012 either outside the country or at one of the Ontario Bariatric Network's designated centres of excellence. The primary outcome was use of hospital services in Ontario within 1 year after surgery. Results: A total of 4852 patients received bariatric surgery out of country, and 5179 patients underwent surgery through the Ontario Bariatric Network. After adjustment, surgery at a network centre was associated with a significantly lower utilization rate of postoperative hospital services than surgery out of country (rate ratio 0.90, 95% confidence interval [CI] 0.84 to 0.97). No statistically significant differences were found with respect to time in critical care or mortality. However, the physician assessment and reoperation rates were significantly higher among patients who received surgery at a network centre than among those who had bariatric surgery out of country (rate ratio 4.10, 95% CI 3.69 to 4.56, and rate ratio 1.84, 95% CI 1.34 to 2.53, respectively). Interpretation: The implementation of a comprehensive, multidisciplinary provincial program to replace outsourcing of bariatric surgical services was associated with less use of postoperative hospital services by Ontario residents undergoing bariatric surgery. Future research should include an economic evaluation to determine the costs and benefits of the Ontario Bariatric Network. PMID:27730113

  18. Advanced Carbothermal Electric Reactor Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The overall objective of the Phase 1 effort was to demonstrate the technical feasibility of the Advanced Carbothermal Electric (ACE) Reactor concept. Unlike...

  19. Thermal Analysis for Mobile Reactor

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    <正>Mobile reactor design in the paper is consisted of two grades of thermal electric conversion. The first grade is the thermionic conversion inside the core and the second grade is thermocouple conversion

  20. Advanced Carbothermal Electric Reactor Project

    Data.gov (United States)

    National Aeronautics and Space Administration — ORBITEC proposes to develop the Advanced Carbothermal Electric (ACE) reactor to efficiently extract oxygen from lunar regolith. Unlike state-of-the-art carbothermal...