Results 71 to 80 of about 9,765 (263)

Characteristics of Different Kinds of Concrete Gravity Dam Under Water Contact Explosion

工程科学与技术, 2017
:In the past half century,China has constructed more dams than any other country in the world.The impact of the blast load on the safety of a concrete dam needs to be assessed.The effects of different locations for underwater contact explosion on two ...
XU Qiang, CHEN Jianyun, LIU Jing, LI Jing, CAO Yang   +4 more
doaj  

Strain-Rate Effect on Mechanical Properties of Fully Graded and Wet-Screened Dam Concrete Based on Flexural and Compressive Tests

Buildings
The dynamic mechanical properties of dam concrete play a critical role in the seismic design of dams. Conducting experiments on large-scale fully graded specimens to accurately obtain the mechanical properties of dam concrete is a challenging task.
Kunhang Zhang, Shengshan Guo, Haibo Wang, Deyu Li, Jin Tu, Hong Zhong, Lijun Zhao, Chunlei Li   +7 more
doaj   +1 more source

Risk Assessment of Aged Concrete Gravity Dam Subjected to Material Deterioration Under Seismic Excitation

International Journal of Concrete Structures and Materials, 2020
This paper proposes an approach to assess and predict the seismic risk of existing concrete gravity dams (CGDs) considering the ageing effect. The combination of fragility function and cumulative absolute velocity (CAV) depending on two failure states ...
Tahmina Tasnim Nahar, Anh-Tuan Cao, Dookie Kim   +2 more
doaj   +1 more source

Perceived Educational Value of a Self‐Developed 3D‐Printed Pediatric Dentistry Simulator

Journal of Dental Education, EarlyView.
ABSTRACT Purpose To design and assess a 3D‐printed pediatric dentistry simulator and to evaluate its perceived educational value and realism through student and expert feedback. Methods A maxillary simulator that is mountable on phantom heads was developed and produced by desktop stereolithography with single‐use inserts, enabling proximal caries ...
Michel Benyamin, Sandrella Hamdan, Timothy Fasham, Samuel Morice, Stephane Le Goff, Maria‐Antonietta D'Agostino, Marie Jannot, Yasmine Smail, Jean‐Pierre Attal, Hélène Gouze, Elisabeth Dursun, Philippe Francois   +11 more
wiley   +1 more source

Hydraulic reconstruction of catastrophic drainage from the Late Glacial, Lake Fraser, British Columbia, Canada

Journal of Quaternary Science, EarlyView.
ABSTRACT Glacial Lake Fraser, which formed in British Columbia against the retreating Cordilleran Ice Sheet, stored ~520 km3 of water before its near‐total drainage into the Salish Sea during an outburst flood event. Despite the impact of the outburst flood on sediment transport and landscape evolution in the Fraser River valley, its peak discharge and
Sean M. Loeffler, John J. Clague, Brendan G. N. Miller, Sophie L. Norris   +3 more
wiley   +1 more source

Implications of heterogeneous embankment conditions for geoelectrical investigations on dams: A case study at Mactaquac Dam, Canada

Near Surface Geophysics, EarlyView.
Abstract Electrical resistivity tomography (ERT) has been shown to be effective for surveying and monitoring dams, due to the method's sensitivity to moisture content and relevant physical properties (e.g., porosity). Automated ERT systems, capable of time‐lapse monitoring, can be used to detect variations in ground conditions.
John S. Ball, Karl E. Butler, Jonathan E. Chambers, Paul B. Wilkinson, Andrew Binley   +4 more
wiley   +1 more source

Temperature and thermal stress distribution in concrete arch dams in operation

, 2011
The temperature field of concrete dams in operational stages is dominantly influenced by variations in environmental seasonal temperature and climatic conditions.
Meri, Tony Carlos
core  

Monitoring Model of Concrete Dam Deformation Based on Gray Wolf Optimization Algorithm

Renmin Zhujiang, 2021
Dam deformation is one of the most reliable indicators that can reflect the actual condition of concrete dam.Modeling and analysis of dam deformation monitoring data is an effective way to reflect the operation behavior of concrete dam and seek for the ...
CHEN Shuyun, ZHOU Wenzhong, GU Yanchang, WANG Hong   +3 more
doaj  

Identifying DASH Adherence Patterns and Their Association With Dietary Behaviors Among Adults With Hypertension

Research in Nursing &Health, EarlyView.
ABSTRACT The Dietary Approaches to Stop Hypertension (DASH) diet is effective in lowering blood pressure yet adherence to DASH remains low. Intuitive eating, a behavior that emphasizes responsiveness to hunger and satiety cues, may influence DASH adherence but has not been well studied among adults with hypertension.
Youran Lee, Melissa C. Kay, Anushka Palipana, Sandy Askew, Miriam B. Berger, Hailey N. Miller, Gary G. Bennett, Qing Yang   +7 more
wiley   +1 more source

More than proteins for empty stomachs: Wild meat in the BaTonga food system

People and Nature, EarlyView.
Abstract Our paper highlights the limitations of the framework used by many conservation‐focused programmes that incorporate food security objectives. This framework encourages the substitution of wild proteins with domestic proteins by promoting animal farming in communities located near conservation areas.
Muriel Figuié, Luzibo Ottilia Munsaka, Vupenyu Dzingirai, Olivier Lepiller, Maxwell Phiri, Patrice Grimaud   +5 more
wiley   +1 more source