Results 61 to 70 of about 3,693 (262)

Dynamic Analysis of Concrete Arch Dam due to Earthquake Force [PDF]

Journal of Rehabilitation in Civil Engineering
A gravity dam with concrete is a vast construction that keeps a large volume of water on its upstream side, and its ability to withstand seismic vibrations is critical.
Sougata Mukherjee, K. Nallasivam
doaj   +1 more source

Downstream Passage Performance of European Silver Eels (Anguilla anguilla): The Importance of Phenotypic Variation and Rack Design

Animal Conservation, EarlyView.
During their spawning migration, European silver eels frequently encounter hydropower facilities where successful downstream passage is essential for the conservation of this critically endangered species. In this study, we evaluated how three angled rack designs and individual behavioral variation influenced downstream passage success in large‐scale ...
Dennis Leandersson, Johan Watz, Johan Höjesjö, P. Anders Nilsson, Pernilla Hansson, David Aldvén, Magnus Lovén Wallerius, Patrik Andreasson, Olle Calles   +8 more
wiley   +1 more source

Effect of Kinematics and Speed on Filling Material Removal, Canal Transportation, and Apical Extrusion During Retreatment of Curved Canals

Australian Endodontic Journal, EarlyView.
ABSTRACT This study evaluated the effects of kinematics (reciprocating vs. continuous rotation) and rotational speed (350 vs. 1200 rpm) on filling removal, canal transportation, and apical extrusion during retreatment of curved root canals. Vertucci type II mesial roots of mandibular molars were prepared, filled, and scanned by micro‐computed ...
Jenny Guerrero, Josué Fernández, Flávio R. F. Alves, José C. Provenzano, Karen M. Brisson‐Suárez, Marília F. Marceliano‐Alves, Isabela N. Rôças, José F. Siqueira Jr   +7 more
wiley   +1 more source

Study on Seismic Safety Evaluation Models for Gravity Dams Based on Integrated Performance Indicators

Renmin Zhujiang
Existing studies typically explore the differences in seismic performance evaluation results of different evaluation models for concrete gravity dams by analyzing amplitude factors while neglecting the influence of ground motion duration.
FAN Wenzhan, ZHU Shaokun, CHEN Bo
doaj   +2 more sources

Evaluation of dynamic responses of concrete gravity dam considering dam-reservoir-foundation interaction with inclined absorptive reservoir bottom

Journal of Materials and Engineering Structures
The present paper shows the dynamic responses of concrete gravity dam considering inclined reservoir bed. Responses of gravity dam influenced by the adjacent reservoir and soil foundation.
Santosh Kumar DAS, Kalyan Kumar MANDAL, Arup Guha NEYOGI   +2 more
doaj  

Tensile reliability analysis for gravity dam foundation surface based on FEM and response surface method

Water Science and Engineering, 2010
In this study, the limit state equation for tensile reliability analysis of the foundation surface of a gravity dam was established. The possible crack length was set as the action effect and allowable crack length was set as the resistance in the limit ...
Tong-chun Li, Dan-dan Li, Zhi-qiang Wang
doaj   +1 more source

Tracing Identity in a Fragmented Past: Multi‐Proxy Analysis of Human Skeletal Remains From Dungowan Creek, New South Wales, Australia

Archaeometry, EarlyView.
ABSTRACT Human skeletal remains constitute critical archaeological evidence for reconstructing past societies, yet their investigation requires careful ethical, cultural, and legislative consideration. This paper reports on the discovery, recovery and analysis of a set of skeletal remains encountered during a cultural heritage management (CHM ...
Antonella Skepasianos, Cameron Neal, Sarah Croker, Anthony Dosseto, Michelle Fermor, Steve Talbott, Warren Mayers, Joel Mason, Florian Dux, Luke Kirkwood, Pamela Kottaras, Alan N. Williams   +11 more
wiley   +1 more source

Stability analysis of concrete gravity dam on complicated foundation with multiple slide planes

Water Science and Engineering, 2008
A key problem in gravity dam design is providing enough stability to prevent slide, and the difficulty increases if there are several weak structural planes in the dam foundation.
Ren Xuhua, Shu Jiaqing, Ben Nenghui, Ren Hongyun   +3 more
doaj   +1 more source

Towards an ‘absolute’ timing of biostratigraphic and environmental phases from the Saalian late glacial to the Weichselian pleniglacial in central Europe—Insights from a lacustrine succession in Lichtenberg, northern Germany

Boreas, EarlyView.
Palynological records are central to the biostratigraphic subdivision of the Late Pleistocene in central Europe. Yet many interglacial and interstadial phases—such as the Eemian, Brörup and Odderade—remain only poorly constrained in time due to limited numerical dating.
Michael Hein, Thomas Kasper, Alexis Badai Samudra, Martin Theuerkauf, Markus Lothar Fischer, Neda Rahimzadeh, Maria Sekar Proborukmi, Sonja Rigterink, Agnieszka Gruszczyńska, Christian Zeeden, Simon Parfitt, David John Horne, Lucy Roberts, Dustin White, Lisa Brogmus, Hans von Suchodoletz, Tobias Lauer, Marcel Weiss, David Colin Tanner, Brigitte Urban   +19 more
wiley   +1 more source

Holocene shoreline displacement and the impact of the Storegga tsunami on Hinnøya, northern Norway

Boreas, EarlyView.
The Holocene relative sea‐level (RSL) history of Norway's largest island, Hinnøya, has been investigated in detail, using sediment records from 25 isolation basins. The sediments were analysed for macrofossil and phytoplankton content, which served as the basis for identifying marine–lacustrine transitions, that is isolation contacts. Terrestrial plant
Anders Romundset, Kristian Vasskog, Martin Buran, Svein Olaf Dahl, Fredrik Høgaas, Mara Sternberg   +5 more
wiley   +1 more source