Results 61 to 70 of about 101,603 (299)

Assessing Spatial Riverbed Clogging and Its Dynamics at the Reach Scale: A Coupled Approach Combining Field Measurements and 1D Hydro‐Sedimentary Numerical Modeling

River Research and Applications, EarlyView.
ABSTRACT Assessing spatial and temporal variability of clogging in gravel‐bed rivers is challenging because field methods typically rely on labor‐intensive measurements of fine‐sediment content, porosity, or hydraulic conductivity. Clogging is also highly dynamic, driven by hydro‐sedimentary conditions; yet few studies have examined it at large scales ...
D. Hernandez, B. Camenen, A. Bonnefoy
wiley   +1 more source

Effects of Structural Type, Water Pressure, and Top Restraint on the Response of Artificial Dams in Underground Reservoirs

Applied Sciences
Artificial dams are key retaining structures in underground coal mine reservoirs, and their mechanical performance directly affects the safety and stability of underground water storage systems.
Jingmin Xu, Junkai Zhu, Lujun Wang
doaj   +1 more source

Numerical simulation of impact resistance of debris flow dam: A case study of the debris flow dam in Sanyanyu Gully, Zhouqu County, Gansu Province

Zhongguo dizhi zaihai yu fangzhi xuebao, 2021
In order to improve the design safety of gravity dam and avoid excessive capital investment and waste, it is very important to choose a reasonable debris flow impact as the design basis. This paper takes Sanyanyu ditch debris flow disaster prevention and
Xingrong LIU, Xinping WEI, Yujin CHEN, Xiangyu WANG   +3 more
doaj   +1 more source

Dynamic analysis of concrete gravity dam with RS-DAM [PDF]

, 2015
In the thesis there is a short summary about concrete gravity dams, earthquakes and the damage they caused on concrete dams around the world. Later on, a computer program RSDAM, that is designed to evaluate the transient response of a cracked section, is
Vogrinčič, Rok
core   +1 more source

Mass for the graviton [PDF]

, 1998
Can we give the graviton a mass? Does it even make sense to speak of a massive graviton? In this essay I shall answer these questions in the affirmative.
A. A. Logunov, A. A. Logunov, A. A. Logunov, A. A. Logunov, A. A. Vlasov, A. S. Goldhaber, C. W. Misner, D. Boulware, H. Van Dam, H. Van Dam, J. H. Taylor, K. S. Thorne, L. Ford, M. G. Hare, Matt Visser, P. J. E. Peebles, Particle Data Group, T. Damour, V. A. Kostalecky, Y. M. Loskutov, Y. M. Loskutov   +20 more
core   +3 more sources

Experimental Study on Fine Sediment Infiltration (FSI) Processes in Different Gravel Mixtures

River Research and Applications, EarlyView.
ABSTRACT Fine sediment infiltration (FSI) can lead to riverbed clogging, thereby degrading important habitats for aquatic biota in the hyporheic interstitial zone of gravel‐bed rivers (e.g., by reducing oxygen availability). This stress on rivers may increase from anthropogenic influences and can be counteracted by artificial gravel augmentation to ...
Michael Paster, Gábor Fleit, Helmut Habersack, Christoph Hauer   +3 more
wiley   +1 more source

A Novel Method for Constructing Main-Aftershock Sequences and Its Application in the Global Damage Accumulation Effects Analysis of Gravity Dams

Shock and Vibration, 2021
The traditional linear elastic and Drucker–Prager (DP) models cannot truly reflect the strong nonlinear characteristics of the concrete and rock foundation of the dam under earthquake.
Liaojun Zhang, Yafei Zhai, Binghui Cui, Yujie Tang, Zhonghui Bi   +4 more
doaj   +1 more source

From Nominalisation to Passive in Old Tibetan: Reconstructing Grammatical Meaning in an Extinct Language1

Transactions of the Philological Society, EarlyView.
Abstract Based on an analysis of the Old Literary Tibetan corpus—a corpus of the oldest documented Tibetic language—the present study provides evidence that literary Tibetan v3 verb stems (commonly termed ‘future’) initially encoded passive voice. New arguments put forward in this article range from Trans‐Himalayan nominal morphology to early Tibetan ...
Joanna Bialek
wiley   +1 more source

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

Insurance and the “Irrationalization” of Disaster Policy: A Political Crisis Theory for an Age of Climate Risk

The British Journal of Sociology, EarlyView.
ABSTRACT In the last several years, disaster insurance programs around the world have experienced disruptions that many observers interpret to be a primary symptom of “climate crisis” (Bittle 2024). Governments have responded to these disruptions through disjointed and at times contradictory measures: they treat disasters, alternately, as “Acts of God”
Stephen J. Collier
wiley   +1 more source