1,049 results
Search Results
2. Industrial innovation and infrastructure as drivers of change in the Canadian boreal zone1.
- Author
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Musetta-Lambert, Jordan L., Enanga, Eric M., Teichert, Sonja, Creed, Irena F., Kidd, Karen A., Kreutzweiser, David P., and Sibley, Paul K.
- Subjects
TECHNOLOGICAL innovations ,NATURAL resources ,PAPER pulp ,TAIGAS ,TAIGA ecology ,SOCIAL values ,ECOSYSTEM services ,ELECTRON tube grids - Abstract
Copyright of Environmental Reviews is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2019
- Full Text
- View/download PDF
3. Special issue of selected papers from the 15th Canadian Drosophila Research Conference, CANFLY XV 2019, held in Toronto, Ontario, Canada, on 9–13 June 2019.
- Subjects
- *
DROSOPHILA , *SCIENCE publishing , *CONFERENCES & conventions , *EMAIL - Published
- 2021
- Full Text
- View/download PDF
4. Best Paper Award 2017.
- Author
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Polat, Ali
- Subjects
- *
SCIENCE publishing , *SCHOLARLY publishing , *GEOLOGY associations , *AWARDS - Abstract
The article announces that Tiffani A. Fraser and Matt P. Hutchison won the 2017 Best Paper Award from the Canadian Science Publishing and the Geological Association of Canada.
- Published
- 2018
- Full Text
- View/download PDF
5. LRFD calibration for soil failure limit state using the Stiffness Method.
- Author
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Bathurst, Richard J. and Allen, Tony M.
- Subjects
LOAD factor design ,FAILED states ,BUILDING foundations ,ROAD construction ,BRIDGE design & construction ,BEARING capacity of soils - Abstract
The paper describes load and resistance factor design (LRFD) calibration for the resistance factor used in the Stiffness Method internal stability soil failure limit state for geogrid mechanically stabilized earth (MSE) walls. The Stiffness Method was recently adopted in the current American Association of State Highway and Transportation Officials LRFD Bridge Design Specifications in the US, and will appear in the next edition of the Canadian Highway Bridge Design Code. The paper describes the details of the calibration of the soil failure limit state which is unique to the Stiffness Method. Calibration outcomes include consideration of the concept of level of understanding in the selection of nominal load and resistance values which is unique to LRFD foundation engineering practice in Canada. A practical conclusion from these calculations is that if product line-specific creep test data are available to estimate the reinforcement secant creep stiffness used for design, then a resistance factor of 1.0 is reasonable for US practice. If only minimum average roll value tensile strength data are available, then a value of 0.95 is recommended for US practice. For Canadian practice, the corresponding values for typical level of understanding are 0.90 and 0.85, respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
6. Unified life-cycle cost–benefit analysis framework and critical review for sustainable retrofit of Canada's existing buildings using mass timber.
- Author
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Malomo, D., Xie, Y., and Doudak, G.
- Subjects
- *
COST benefit analysis , *SUSTAINABLE buildings , *RETROFITTING of buildings , *TIMBER , *RETROFITTING , *COMMERCIAL buildings - Abstract
This paper investigates the possibilities and challenges of using mass timber as a sustainable alternative for retrofitting existing buildings in Canada. To create the knowledge foundation on which to devise a holistic framework tailored to the specific characteristics of Canada's built environment, a detailed analysis of the types, geographical distribution, structural, and energy features of the local building stock is first presented. Then, previous strategies for enhancing and upgrading existing buildings with engineered timber are reviewed, classified, and evaluated. Finally, to explore economic and environmental implications, a detailed assessment of available life-cycle cost–benefit analysis approaches is conducted alongside their adaptation to Canada's building context. The findings of this paper can inform policymakers, builders, and designers in developing more sustainable building retrofit practices, design, and regulations, in line with Canada's efforts toward net zero emissions. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
7. Papers dedicated to the memory of Professor Klaus Rothfels (1919-1987) in recognition of his contributions to cytogenetics.
- Subjects
- Animals, Canada, History, 20th Century, Humans, Cytogenetics history
- Published
- 1989
8. A review of large-scale renewable energy partnerships with Indigenous communities and organizations in Canada.
- Author
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Yalamala, Reddi Sekhara, Zurba, Melanie, Bullock, Ryan, and Diduck, Alan P.
- Subjects
RENEWABLE energy sources ,CLEAN energy ,INDIGENOUS children ,ECONOMIC development projects ,BUSINESS skills ,ENVIRONMENTAL protection - Abstract
In this paper, a review of Indigenous engagement in renewable energy projects is conducted and the main elements of energy partnerships between stakeholders and Indigenous partners are discussed. In recent years, Canada has witnessed more significant Indigenous involvement in economic and energy development projects than ever before. For large-scale energy partnerships, the focus is on engagement, financial capital, community buy-in (readiness, and entrepreneurial and business skills), and benefits-sharing with community partners. Equity-ownership, reconciliation, and self-determination intersect with and impact the benefits and sustainability of energy projects, as they are interrelated in the framework of most energy partnerships. This paper illustrates policy disconnects in connection with partnership-making, social outcomes, and decision-making among Indigenous communities. Furthermore, findings from relevant literature explore the nuanced discourse on social implications and capacity challenges that interlink with climate adaptation and reconciliation when promoting large-scale renewable energy partnerships with Indigenous communities. Through a systematic review and a meta-analysis of the literature, we found 80 relevant studies during the screening process, of which 33 were selected for the synthesis. Findings demonstrate that the Crown, energy companies, and community partners need to coordinate and collaborate closely to achieve energy security and sustainable renewable energy. The review suggests that Indigenous engagement in energy partnerships supports positive outcomes for social development and environmental protection among Indigenous communities. The literature suggests that when government and industry mentor in the project implementation process, important positive impacts on energy transitions, and self-sufficiency can be realized. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
9. TRIBUTE.
- Author
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Brouwer, Darren, Bryce, David, and Yining Huang
- Subjects
SCIENTISTS ,NUCLEAR magnetic resonance spectroscopy ,POROUS materials ,GAS hydrates ,PAPER industry - Abstract
The article features scientist John Ripmeester, who has made enormous impact on various research areas involving nuclear magnetic resonance (NMR) spectroscopy, porous materials, and clathrate hydrates. Topics include Ripmeester's experience of working for the paper industry in Canada, how his interest in chemistry has been developed, and his retirement from research in 2008 to focus on his role as head of the Functional Materials Program of the Steacie Institute for Molecular Sciences (SIMS).
- Published
- 2015
- Full Text
- View/download PDF
10. Abstracts of Technical Papers.
- Subjects
BOTANY ,HEALTH ,WHEAT - Abstract
The article presents abstracts of several plant science research which include "Human health issues and wheat," by C. Taylor, "The future of publicly funded wheat development in Canada," by S. Fox, and "Canadian wheat pioneers," by G. Marten.
- Published
- 2012
- Full Text
- View/download PDF
11. PbIso: an R package and web app for calculating and plotting Pb isotope data.
- Author
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Armistead, Sheree E., Eglington, Bruce M., and Pehrsson, Sally J.
- Subjects
WEB-based user interfaces ,ISOTOPES ,RADIOISOTOPES ,CANADIAN provinces - Abstract
The package PbIso is a free and open R toolbox for commonly used calculations and plots of Pb–Pb isotope data and for generating Pb evolution models. In this paper, we review Pb isotope systematics and the calculations that are commonly used, such as model age, model source μ (
238 U/204 Pb), time-integrated κ (232 Th/238 U), and initial Pb isotope ratios. These equations are implemented into R functions in the package PbIso. In addition, functions are provided for generating Pb evolution models, paleoisochrons, and isochrons. This allows users to apply calculations to their data in a straightforward way while providing transparency and flexibility of the calculations used. We have implemented some basic features of the PbIso package into an online shiny R application (see https://shereearmistead.github.io/software/pbiso), which makes it easy for users without any R experience to use these calculations with their own data and to generate plots. We have provided a case study from the Superior Province in Canada, showing how different Pb evolution models can be generated in PbIso and compared to Pb isotope data. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
12. Canada's maritime frontier: the science legacy of Canada's extended continental shelf mapping for UNCLOS.
- Author
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Mosher, David C., Dickson, Mary-Lynn, Shimeld, John, Jackson, H. Ruth, Oakey, Gordon N., Boggild, Kai, Campbell, D. Calvin, Travaglini, Paola, Rainey, Walta-Anne, Murphy, Alain, Dehler, Sonya, and Ells, John
- Subjects
GEOMORPHOLOGY ,CONTINENTAL shelf ,UNITED Nations Convention on the Law of the Sea (1982) ,GEOSTROPHIC currents ,SUBMARINE fans ,CONTINENTAL slopes ,CONTINENTAL margins - Abstract
Canada ratified the United Nations Convention on the Law of the Sea (UNCLOS) in 2003. With that ratification is an obligation to submit data and information to the U.N. pertaining to the limits of the country's extended continental shelf (ECS); the portion of the juridical continental shelf that extends beyond 200 nautical miles. A team of Canadian scientists, managers, and legal experts that included representation from three Federal Departments (Natural Resources Canada, Fisheries and Oceans Canada, and Global Affairs Canada) with additional support from other departments, spent 13 years compiling and acquiring data to provide the scientific evidence to support delineation of Canada's seaward most maritime limit. The submission has the potential to provide Canada with 2.4 million km
2 of additional submarine landmass in the Atlantic and the Arctic oceans over which Canada exercises sovereign rights for the purpose of exploring and exploiting its natural resources. Specific information such as the tectonic framework of the continental margin, the geomorphology of the margin and in particular the continental slope, the geologic nature of adjoined ridges, rises, and plateaux, and sediment thickness within adjacent basins are examples of fundamental pieces of geoscientific information needed to substantiate Canada's outermost maritime limits. This paper highlights a number of segments of Canada's continental margins to showcase this scientific evidence and how it is applied in the UNCLOS context. In doing so, the paper demonstrates the geologic complexity of Canada's margins as illustrated in scientific publications that have resulted from these new data collections, while at the same time presenting new scientific evidence and interpretations. This collection of data and information provides a wealth of new knowledge in Canada's offshore regions. The massive data compilation in the Atlantic led to conception of continental margins, in a source-to-sink scenario, as having an equilibrium base level or graded form, comparable to river systems. Departures from this shape relate to the interplay of sedimentary processes and in particular to those processes that do not fit the source-to-sink paradigm. For example, a significant part of the Atlantic margin is shown to be heavily influenced by along-slope geostrophic currents that generated massive contourite drift deposits. These deposits reflect lateral transport of sediment that had a significant impact on the morphology of the margin. The role of mass transport processes in shaping continental margins is also highlighted, and in particular the collapses of entire segments of the margin were observed. The prominent role mass failure processes play in delivering sediment to the adjacent abyssal plain is also critical in the ECS context. These observations challenge the entrenched notion of a continental margin comprising a shelf, slope, and rise and in particular the concept of the "continental rise". Prior to 2006, regions of the Arctic Ocean seaward of the Canadian landmass had fewer than 5000 km of seismic reflection data. The massive efforts of Arctic coastal States to map their margins for ECS purposes have led to a leap in technological advances to acquire data in ice-covered seas and have led to a wealth of new geoscientific knowledge. Perhaps foremost amongst this knowledge is demonstration that Canada Basin is indeed a fully developed ocean basin, albeit significantly infilled with sediment. Based on this knowledge and identification of related structures, new realistic tectonic scenarios for opening of the Amerasia Basin are proposed that include a significant component of transform or strike-slip motions. With seismic velocity and rock sample information, the continental nature of Alpha and Mendeleev ridges has been substantiated. Even bathymetric data were lacking in the Arctic and new editions of seafloor maps now support grids of 500 m spacing; although some regions remain sparse. Once thought to be relatively stagnant, sedimentary processes such as found in many ocean basins were discovered in the Arctic Ocean. Evidence of geostrophic currents, sediment mass failures, and deep-sea turbidity current channels were found to be ubiquitous, even in the deepest parts of the Arctic's basins. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
13. Slope risk management in light of uncertainty and environmental variability—2021 Canadian Geotechnical Colloquium.
- Author
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Macciotta, Renato
- Subjects
ROCKFALL ,LANDSLIDES ,CONFERENCES & conventions ,CLIMATE change ,GEOTECHNICAL engineering ,WEATHER - Abstract
Landslides are common across Canada and they pose hazards to human safety, economic activities, and the environment. Robust risk management strategies are necessary for sustainable development. A slope risk management framework has been adopted by the geotechnical community for approximately four decades allowing a systematic, consistent and transparent framework for managing risks. Implementing this framework is associated with uncertainties embedded in our estimates of risk. This paper presents a brief summary of the sources and categories of uncertainty in geotechnical slope engineering and focuses on two topics: (1) estimates of uncertainty in risk calculations and (2) temporal changes in landslide likelihood as a function of weather and steps towards estimating landslide risk changes with climate change. The paper argues that a quantitative risk assessment should not focus on the final risk calculation, but the overall knowledge gained. This allows comprehensive documentation of sources of uncertainty and how they impact geotechnical and risk assessments. Furthermore, the paper outlines approaches to define quantitative correlations between rock fall occurrences and weather, which can be leveraged to estimate changes in rock fall risk with climate change. The paper corresponds to, and expands on, the 2021 Canadian Geotechnical Colloquium. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
14. Field monitoring of the ground vibrations adjacent to an onshore wind turbine foundation.
- Author
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He, Pengpeng, González-Hurtado, Jesús, Newson, Tim, Hong, Hanping, Postman, Melanie, and Molnar, Sheri
- Subjects
WIND turbines ,SOIL vibration ,PARTICLE motion ,FREQUENCIES of oscillating systems ,WIND power ,STRUCTURAL dynamics ,NEAR-fields ,FLUCTUATIONS (Physics) - Abstract
Copyright of Canadian Geotechnical Journal is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
15. Undrained capacity of circular shallow foundations on two-layer clays under combined VHMT loading.
- Author
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He, Pengpeng and Newson, Tim
- Subjects
SHALLOW foundations ,BEARING capacity of soils ,FATIGUE limit ,FINITE element method ,CLAY ,SHEAR strength - Abstract
Copyright of Canadian Geotechnical Journal is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
16. Calibration of resistance factors for geotechnical seismic design.
- Author
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Naghibi, Farzaneh and Fenton, Gordon A.
- Subjects
EARTHQUAKE resistant design ,SEISMIC testing ,ROAD construction ,BRIDGE design & construction ,SHALLOW foundations ,CALIBRATION ,BRIDGES - Abstract
Copyright of Canadian Geotechnical Journal is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2019
- Full Text
- View/download PDF
17. Comparison between MERRA-2 and CWEEDS for use in pavement mechanistic-empirical design in Canada.
- Author
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Shafiee, Mohammad, Maadani, Omran, and Cobo, Juan Hiedra
- Subjects
FLEXIBLE pavements ,PAVEMENTS ,PAVEMENT management ,RESILIENT design ,DATA quality - Abstract
To improve the climate resiliency of existing and new pavements, it is important to carry out pavement designs using continuous climate records at high temporal frequencies. Over the years, significant research efforts have been dedicated to obtain high-quality climatic data for pavement design including the latest adoption of the Modern-Era Retrospective analysis for Research and Applications, version 2 (MERRA-2). The purpose of this study is to assess how MERRA-2 performs when compared to the Canadian Weather Energy and Engineering Datasets (CWEEDS), which provides hourly meteorological data for many parts of the country from various periods. In the first part, climate parameters at nine locations were directly compared to determine the correlation between two data sets. In the second part, long-term performances were simulated for typical flexible pavement to assess the relative impact of each climate scenario. As detailed in this paper, observed differences between MERRA-2 and CWEEDS indicate the need for further improvement of climate data quality and availability for designing resilient pavements in Canada. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
18. Review of nonlinear modelling parameters and acceptance criteria in ASCE 41 for seismic evaluation and upgrading of steel structures in Canada.
- Author
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Kim, Taeyong, Kwon, Oh-Sung, Acosta, Joaquín, Fathi-Fazl, Reza, Fazileh, Farrokh, and Cai, Zhen
- Subjects
RETROFITTING of buildings ,STEEL framing - Abstract
The seismic resilience of structures can be quantified through rigorous seismic assessment. Because no detailed guideline is available for nonlinear modelling parameters and the corresponding acceptance criteria for the seismic evaluation and upgrading of steel structures in Canada, the structural commentary of the National Building Code of Canada suggests using ASCE 41, which has been adopted as a standard for seismic evaluation and retrofit of buildings in the United States (U.S.). However, because the steel design standards in Canada and the U.S. are different, their applicability to steel structures in Canada needs to be investigated. To this end, this paper critically reviews the nonlinear modelling parameters and acceptance criteria, and then recommends whether these values need to be revised or are adopted as is for the seismic evaluation and upgrading of steel structures in Canada. A numerical example of a steel moment-resisting frame is presented to demonstrate the recommended parameters being used for seismic evaluation. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
19. Enhancing unsupervised video-based vehicle tracking and modeling for traffic data collection.
- Author
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Zaki, Mohamed H., Sayed, Tarek, and Billeh, Moataz
- Subjects
ACQUISITION of data ,VEHICLE models ,TRAFFIC cameras ,CAMCORDERS ,TRAFFIC flow measurement ,ARTIFICIAL satellite tracking ,DATA collection platforms - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
- Full Text
- View/download PDF
20. Development of quick seismic evaluation procedure for existing buildings in Canada.
- Author
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Fathi-Fazl, Reza, Fazileh, Farrokh, Cai, Zhen, and Cortés-Puentes, W. Leonardo
- Subjects
PILOT projects - Abstract
The National Research Council Canada (NRC) is currently developing seismic evaluation and upgrading guidelines for existing buildings in Canada. The seismic evaluation guidelines consist of three tiers of seismic evaluation procedures, that is, Tier 1 Quick Evaluation, Tier 2 Deficiency-Based Evaluation, and Tier 3 Detailed Evaluation. This paper presents the Tier 1 Quick Evaluation procedure, which aims to update the initial quick evaluation procedure in the existing seismic evaluation guidelines developed by the NRC in early 1990s. The proposed procedure covers seismic assessment of both structural and non-structural elements, and requires the review of construction documents, on-site inspection, and calculations. A set of checklists are contained to uncover potential key seismic deficiencies of the building under evaluation. The checklists are in the form of evaluation statements that relate to potential seismic deficiencies in the structural systems and non-structural components. The proposed procedure is demonstrated by conducting the seismic evaluation of an existing building that is part of a pilot study. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
21. Calibration of resistance factors for design of shallow foundations against sliding.
- Author
-
He, Pengpeng and Fenton, Gordon A.
- Subjects
SHALLOW foundations ,LOAD factor design ,SLIDING mode control ,BEARING capacity of soils ,MONTE Carlo method ,WIND pressure - Abstract
The design of shallow foundations typically proceeds by using the load and resistance factor design (LRFD) methodology to avoid various limit states with some probability. This paper looks at the sliding limit state of shallow foundations, and the sliding resistance factors required for the LRFD approach are estimated using reliability analyses of surface strip foundations. Cohesive and frictional soils are separately studied under wind loading conditions. Monte Carlo simulations are used to estimate the sliding failure probability of foundation designs on cohesive soils, and an analytical method is developed for frictional soils. The results indicate the existence of a "worst case" correlation length for cohesive soils, and the sliding resistance factor required to achieve target maximum lifetime failure probabilities is around 0.4–0.65 for moderate soil variability. For frictional soils, the required sliding resistance factor is about 0.5–0.85 for ν
ϕ′ = 0.15. Overall, the sliding resistance factors recommended here agree well with the resistance factors of ϕgu = 0.6 for cohesive soils and ϕgu = 0.8 for frictional soils stipulated by geotechnical LRFD code provisions in Canada. The analyses can be used to estimate the reliability of current designs and can also aid the calibration of geotechnical design codes. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
22. Icing and aufeis in cold regions II: consequences and mitigation.
- Author
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Turcotte, B., Dubnick, A., and McKillop, R.
- Subjects
- *
HYDRAULIC structures , *WATER table , *SPRING , *INFRASTRUCTURE (Economics) , *ICE ,COLD regions - Abstract
The process of icing and the resulting layered ice masses, called aufeis, are caused by the freezing of overflow originating from groundwater or surface water. Aufeis can directly impact infrastructure and property, most commonly through winter ice formation and spring flooding within, against, and on the surface of hydraulic structures and transportation infrastructure. They also represent a safety concern for drivers. This geohazard often needs to be managed proactively and efficiently to mitigate associated risks. This paper provides an overview of the consequences of aufeis in northwestern Canada. A total of 50 existing and novel icing and aufeis mitigation approaches are described and classified. The context of applicability for each approach is identified, considering the source of water, the type of infrastructure, and its role in the formation of aufeis. Finally, future research avenues to support the development or improvement of aufeis risk reduction techniques are presented. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
23. Late Wisconsinan buildup and wastage of the Innuitian Ice Sheet across southern Ellesmere Island, Nunavut.
- Author
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England, John H., Atkinson, Nigel, Dyke, Arthur S., Eans, David J. A., and Zreda, Marek
- Subjects
ICE sheets ,ICE fields ,ABSOLUTE sea level change ,GEOLOGY ,GEOMORPHOLOGY - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2004
- Full Text
- View/download PDF
24. Seismic performance assessment of conventional construction concrete moment-resisting frame buildings in Canada using the FEMA P695 methodology.
- Author
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Fazileh, Farrokh, Khosravi, Sadegh, Dolati, Abouzar, Fathi-Fazl, Reza, and Saatcioglu, Murat
- Subjects
CONCRETE construction ,SEISMIC response ,SYSTEM safety ,ARCHETYPES - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
25. Using synthetic climate datasets for geotechnical and geoenvironmental design problems.
- Author
-
Bashir, Rashid, Sahi, Muhammad A.N., and Sharma, Jitendra
- Subjects
SWELLING soils ,SOIL infiltration ,CIVIL engineers ,CIVIL engineering ,COMPUTER simulation - Abstract
Copyright of Canadian Geotechnical Journal is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
26. Semi-quantitative seismic risk screening tool for existing buildings in Canada.
- Author
-
Fathi-Fazl, Reza, Cai, Zhen, Cortés-Puentes, W. Leonardo, and Fazileh, Farrokh
- Subjects
WEB-based user interfaces ,RESOURCE allocation - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
27. Investigation of climate change impacts on early-age cracking of jointed plain concrete pavements in Canada.
- Author
-
Shafiee, Mohammad and Maadani, Omran
- Subjects
CONCRETE pavements ,CLIMATE change ,ATMOSPHERIC temperature ,ATMOSPHERIC models ,WIND speed ,HUMIDITY - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
28. Roughness prediction models using pavement surface distresses in different Canadian climatic regions.
- Author
-
Patrick, Graeme and Soliman, Haithem
- Subjects
PAVEMENTS ,PREDICTION models - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2019
- Full Text
- View/download PDF
29. A science and management partnership to restore coregonine diversity to the Laurentian Great Lakes.
- Author
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Bunnell, David B., Ackiss, Amanda S., Alofs, Karen M., Brant, Cory O., Bronte, Charles R., Claramunt, Randall M., Dettmers, John M., Honsey, Andrew E., Mandrak, Nicholas E., Muir, Andrew M., Santucci Jr, Victor J., Smith, David R., Strach, Russell M., Sweka, John A., Weidel, Brian C., Mattes, William P., and Newman, Kurt R.
- Subjects
- *
MANAGEMENT science , *ADAPTIVE natural resource management , *FISHERY management , *BIOLOGICAL extinction , *LAKES , *INDIGENOUS fishes , *FRESHWATER biodiversity , *FRESHWATER habitats - Abstract
Similar to many freshwater ecosystems, the Laurentian Great Lakes of North America have undergone numerous anthropogenic stressors resulting in considerable loss of biodiversity and habitat. Among Great Lakes fishes, the coregonine sub-family has endured the most extensive declines, including extinction of several species (Coregonus johannae, C. alpenae, and C. kiyi orientalis) and at least 10 instances of local extirpations of other species (C. nigripinnis, C. reighardi, C. zenithicus, C. hoyi, and C. artedi) across all 5 lakes, much of which occurred prior to the 1960s owing to overfishing, interactions with non-indigenous species, and habitat loss. Despite these declines, no federal-, provincial-, or state-mandated actions were ever implemented to conserve coregonine diversity, potentially because so much of the coregonine declines occurred prior to the enactment of federal conservation legislation. Possible explanations for inaction since enactment of that legislation include insufficient data on biological vulnerability or threats, unresolved taxonomy, and limited support from the fishery management agencies and their stakeholders prior to the 2000s. In recent decades, however, several fishery management agencies have undertaken efforts to re-introduce coregonine diversity. These efforts helped lead to development of a science-based framework to restore coregonines that was universally endorsed by fishery managers representing eight U.S. states, four U.S. tribal organizations, and the province of ON, Canada, in May 2018. The basin-wide framework is based on principles of conservation biology and adaptive management. We describe details of its key steps, including planning, restoring, and evaluating, while also describing recent implementation efforts to develop methods, improve available resources, and enhance coordination across the basin. Although our paper describes a regional effort to restore native coregonines, our adaptive-management approach could be used by other multi-agency stakeholders seeking to conserve or restore native fishes. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
30. Improvement of tailings impoundment seismic and post-seismic stability using densification and waste rock inclusions.
- Author
-
Contreras, Carlos Andrés, Yniesta, Samuel, and Aubertin, Michel
- Subjects
TAILINGS dams ,SURFACE fault ruptures ,METAL tailings ,GROUND motion ,EARTHQUAKES ,NUMERICAL analysis - Abstract
Copyright of Canadian Geotechnical Journal is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
- Full Text
- View/download PDF
31. Developing a machine learning-based approach for predicting road surface friction using dash camera images—a City of Edmonton, Canada, case study.
- Author
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Xie, Qian and Kwon, Tae J.
- Subjects
- *
MACHINE learning , *PAVEMENTS , *STANDARD deviations , *FRICTION - Abstract
Although road surface friction is considered the most effective performance measure for maintenance operations, it is not commonly used due to the high cost of collection. As a result, most jurisdictions use subjective visual indicators that qualitatively describe the state of the road surface, even though they create measurement inconsistencies and offer less detailed maintenance tracking. For maintenance personnel to transition into using friction, the collection cost must be reduced. This paper attempts to do so by proposing a low-cost, machine learning-based method for predicting road surface friction using dash camera imagery and demonstrates its feasibility through a case study. The dataset used for this project was collected in the City of Edmonton, AB, Canada during its 2021/2022 winter season. Three models were developed using tree-based algorithms, where all three displayed high performance with an average root mean squared error of 0.0796 or 79.3% accuracy based on RMSPE. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
32. Crustal eduction and slab-failure magmatism in an Orosirian (2.05–1.80 Ga) postcollisional cratonic foredeep: geochronology of Seton volcanics and Compton laccoliths, Tu Cho (Great Slave Lake), NWT, Canada.
- Author
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Hoffman, Paul F., Macdonald, Francis A., Bowring, Samuel A., Ramezani, Jahandar, Buchwaldt, Robert, Hildebrand, Robert S., and Whalen, Joseph B.
- Subjects
VOLCANOLOGY ,GEOLOGICAL time scales ,THRUST belts (Geology) ,MAGMATISM ,OROGENIC belts ,VOLCANISM ,LAKES - Abstract
Three Orosirian basins and associated foreland thrust-fold belts are preserved on the margins of the Slave craton. All three are related to orogenic belts where oceans opened and later closed, uniting new crustal partners. The Great Slave basin differs from the Kilhigok and Coronation basins in ways that have defied explanation. It lacks a passive margin sequence and hosts two discrete igneous suites, separated by large-scale thrusting, that occurred well after the adjacent paleocean had closed. Here we report U–Pb zircon geochronology by chemical abrasion isotope dilution thermal ionization mass spectrometry for a member of each suite to constrain the age and origin of postcollisional thrusting. A widespread pulse of mainly phreatic alkaline volcanism, coeval with renewed foredeep flexure, occurred at 1889.0 ± 0.7 Ma (2σ internal error). A quartz-monzodiorite body, one of a belt-parallel chain of laccoliths that postdate thrusting, was emplaced at 1866.9 ± 0.9 Ma. These ages bracket renewed foredeep sedimentation and thrusting that telescoped major facies zones and was rooted within the basin. The older age is 70 and 30−60 Myr younger than collision in the Thelon and Taltson orogens, respectively. We attribute postcollisional thrusting and foredeep subsidence to "eduction"—the upward and outward ejection of partly subducted crust—and postulate that the top of the ejected wedge was a normal-sense detachment fault projecting beneath the Nonacho basin. We infer that eduction was triggered by slab failure, producing alkaline volcanism, and ended with delamination and laccolith emplacement. Eduction was facilitated by tradewind-driven erosion. Delamination was enabled by crustal transfer to the educted wedge, reducing footwall buoyancy. Slab failure and/or delamination removed the passive margin. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
33. 2013 Colloquium of the Canadian Geotechnical Society: Geotechnical and geoenvironmental behaviour of high-density tailings.
- Author
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Simms, P.
- Subjects
METAL tailings ,MINE waste -- Environmental aspects ,GEOTECHNICAL engineering ,ENVIRONMENTAL geotechnology ,DAM foundations ,RHEOLOGY ,MINES & mineral resources - Abstract
Copyright of Canadian Geotechnical Journal is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2017
- Full Text
- View/download PDF
34. A simplified seismic design method for limited-ductility steel multi-tiered concentrically braced frames in moderate seismic regions.
- Author
-
Derakhshan Houreh, Eshagh and Imanpour, Ali
- Subjects
STEEL framing ,EARTHQUAKE resistant design ,STEEL ,NONLINEAR analysis ,TALL buildings - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
- Full Text
- View/download PDF
35. Seasonal reproductive patterns and recommended sampling times for sentinel fish species used in environmental effects monitoring programs in Canada.
- Author
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Barrett, Timothy J. and Munkittrick, Kelly R.
- Subjects
ENVIRONMENTAL engineering ,ENVIRONMENTAL impact analysis ,FISHES ,SPAWNING - Abstract
Copyright of Environmental Reviews is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2010
- Full Text
- View/download PDF
36. Calibration concepts for load and resistance factor design (LRFD) of reinforced soil walls.
- Author
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Bathurst, Richard J., Allen, Tony M., and Nowak, Andrzej S.
- Subjects
CALIBRATION ,LOAD factor design ,FAULT tolerance (Engineering) ,ENGINEERING geology ,ENGINEERING design - Abstract
Copyright of Canadian Geotechnical Journal is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2008
- Full Text
- View/download PDF
37. Postglacial emergence of Amund and Ellef Ringnes islands, Nunavut: implications for the northwest sector of the Innuitian Ice Sheet.
- Author
-
Atkinson, Nigel and England, John
- Subjects
HOLOCENE stratigraphic geology ,ICE sheets ,GLACIAL landforms ,HOLOCENE paleoceanography ,ABSOLUTE sea level change - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2004
- Full Text
- View/download PDF
38. Benchmark NBC editions for seismic risk management of existing buildings in Canada.
- Author
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Fathi-Fazl, Reza, Kadhom, Bessam, Cai, Zhen, and Fazileh, Farrokh
- Subjects
BUILDING operation management ,RISK assessment ,PROVINCES - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
39. Hydrotechnical advances in Canadian river ice science and engineering during the past 35 years.
- Author
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Beltaos, S. and Burrell, B. C.
- Subjects
ICE on rivers, lakes, etc. ,HYDRAULIC engineering ,CIVIL engineering ,HYDROELECTRIC power plants ,BRIDGE design & construction ,FLOOD damage prevention ,RIVERS ,RIVER ecology - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2015
- Full Text
- View/download PDF
40. Recent sedimentation in three adjacent fjord-lakes on the Québec North Shore (eastern Canada): facies analysis, laminae preservation, and potential for varve formation.
- Author
-
Nzekwe, Obinna P., Francus, Pierre, St-Onge, Guillaume, Lajeunesse, Patrick, Fortin, David, Gagnon-Poiré, Antoine, Philippe, Édouard G.H., and Normandeau, Alexandre
- Subjects
LAKE sediments ,SEDIMENTATION & deposition ,FACIES ,FJORDS ,VARVES ,LAKE hydrology - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2018
- Full Text
- View/download PDF
41. Resilience-based optimization model for maintenance and rehabilitation of pavement networks in a freeze–thaw environment.
- Author
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Mohammed, Ahmed, Abu-Samra, Soliman, Zayed, Tarek, Bagchi, Ashutosh, and Nasiri, Fuzhan
- Subjects
PAVEMENTS ,PAVEMENT management ,ASSET management ,MATHEMATICAL models ,REHABILITATION ,INVENTORY shortages - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
42. Recycled nutrients as a phosphorus source for Canadian organic agriculture: a perspective.
- Author
-
Nicksy, Jessica and Entz, Martin H.
- Subjects
FOOD waste ,PHOSPHATE rock ,PHOSPHORUS ,CROPPING systems ,FERTILIZERS - Abstract
Copyright of Canadian Journal of Soil Science is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
43. Exploring road safety of pedestrians in proximity to public transit access points (bus stops and metro stations), a case study of Montreal, Canada.
- Author
-
Samani, Reza Riahi and Amador-Jimenez, Luis
- Subjects
LOCAL transit access ,BUS stops ,PEDESTRIANS ,ROAD safety measures ,PUBLIC transit ,PEDESTRIAN crosswalks - Abstract
Public transit plays a significant role in the sustainability of an urban region which requires high pedestrian safety at the interchange points. This research studies the magnitude of pedestrian collisions in the proximity of Public Transit Access Points (PTAPs) and address how Traffic Calming strategies and road elements improve pedestrian safety at PTAPs. Getis-Ord Hotspot Analysis and the Negative Binomial models are applied to address research questions. Pedestrian collisions occur more frequently at intersections with the presence of a PTAP and with a higher volume and number of bus routes. Traffic calming strategies such as road width reduction, sidewalk width increase, median refugees, pedestrian crossing phase, and vehicle stop signs could improve pedestrian safety of PTAP. Besides, pedestrians are at more risk in PTAP at locations where high road gradients and in proximity to intersections with a higher number of directions of vehicle traffic flow. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
44. Editorial policy / Orientation de la revue.
- Author
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Mavinic, D. S. and Sayed, T. A.
- Subjects
EDITORIAL policies ,PERIODICAL publishing ,PUBLISHING ,TECHNICAL journalism ,PUBLICATIONS ,CIVIL engineering ,INFORMATION resources ,ASSOCIATIONS, institutions, etc. - Abstract
The article offers information on the editorial policy implemented by the "Canadian Journal of Civil Engineering." The journal, which is intended to reflect and stimulate the practice of civil engineering in Canada, is said to be recognized as the official technical journal of the Canadian Society for Civil Engineering and is published monthly by the National Research Council. It is not claimed to publish papers that are clearly in the domain of the "Canadian Geotechnical Journal" or the "Canadian Surveyor."
- Published
- 2009
- Full Text
- View/download PDF
45. John Tuzo Wilson: a Canadian who revolutionized Earth Sciences1.
- Author
-
Polat, Ali
- Subjects
SCIENTISTS ,EARTH sciences ,PLATE tectonics ,CONTINENTAL drift - Abstract
Copyright of Canadian Journal of Earth Sciences is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2014
- Full Text
- View/download PDF
46. An introduction to Canada's boreal zone: ecosystem processes, health, sustainability, and environmental issues1.
- Author
-
Brandt, J.P., Flannigan, M.D., Maynard, D.G., Thompson, I.D., and Volney, W.J.A.
- Subjects
SUSTAINABLE forestry ,FORESTS & forestry ,TAIGAS ,ECOSYSTEMS ,ENVIRONMENTAL impact analysis ,WATER power ,GLACIATION - Abstract
Copyright of Environmental Reviews is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2013
- Full Text
- View/download PDF
47. Methodology for seismic risk screening of existing buildings in Canada: Structural scoring system.
- Author
-
Fathi-Fazl, Reza, Cai, Zhen, Jacques, Eric, and Cortés-Puentes, W. Leonardo
- Subjects
EARTHQUAKE resistant design ,DESIGN services - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
48. Scientific considerations and challenges for addressing cumulative effects in forest landscapes in Canada.
- Author
-
Venier, L.A., Walton, R., and Brandt, J.P.
- Subjects
ECOLOGICAL disturbances ,NATURAL resources ,DATA integration ,LANDSCAPES ,ACQUISITION of data ,FORESTS & forestry ,FOREST management - Abstract
Copyright of Environmental Reviews is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
49. Material properties for fracture mechanics based strength assessment of cast iron water mains.
- Author
-
Debnath, Suborno, Ali, Ismail M., Dhar, Ashutosh Sutra, and Thodi, Premkumar
- Subjects
FRACTURE mechanics ,CAST-iron ,MECHANICAL properties of condensed matter ,WATER-pipes ,NOTCH effect ,FRACTURE toughness - Abstract
Copyright of Canadian Journal of Civil Engineering is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2021
- Full Text
- View/download PDF
50. Study on the efficiency of destress blasting in deep mine drift development.
- Author
-
Sainoki, Atsushi, Mitri, Hani S., and Emad, Muhammad Zaka
- Subjects
DESTRESS blasting ,BLASTING ,GLACIAL drift ,MINE safety ,ROCK bursts ,MINES & mineral resources ,MATHEMATICAL models - Abstract
Copyright of Canadian Geotechnical Journal is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2017
- Full Text
- View/download PDF
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