Results 61 to 70 of about 1,714 (203)

A simplified two‐station approach for modeling metabolism in dam tailwaters subject to diel flow variation

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Tailwaters are ubiquitous and highly managed ecosystems whose food webs often rely disproportionately on autochthonous energy. In situ continuous dissolved oxygen data are increasingly being used to estimate gross primary productivity and ecosystem respiration in rivers, but this approach is complicated in tailwaters, where upriver ...
Ian W. Bishop   +5 more
wiley   +1 more source

Analysis of Slope Stability of Small and Medium Earth-rock Dams underSeepage-stress Coupling and Fluctuation of Reservoir Level

open access: yesRenmin Zhujiang, 2020
In order to study the influence mechanism and law of seepage-stress coupling and thefluctuation of reservoir level on slope stability of small and medium homogeneous earth-rock dams,according to the principle of unsaturated seepage and the simplified ...
SU Zhengyang, ZHANG Zhitao, LI Hanzhang
doaj  

Comprehensive Evaluation for Real-Time Compaction Quality Using i-AHP and i-GAM: Case Study of Earth-Rock Dam

open access: yesApplied Sciences, 2019
The real-time compaction quality evaluation of earth-rock dam plays a pivotal role in ensuring dam safety. However, the current real-time compaction quality evaluation only takes the physical properties of compacted dam materials into account, which ...
Minghui Liu   +5 more
doaj   +1 more source

Manufacturing Nostalgia in the Digital Age: A Foreverism Perspective

open access: yesPsychology &Marketing, EarlyView.
ABSTRACT Many scholars argue that we are experiencing the era of “retro”—nostalgia‐driven marketing and consumption phenomena reinforced by digital technologies. However, existing research lacks a critical analysis of nostalgia in contemporary markets and of how digital content, tools, and environments transform retro consumption experiences and alter ...
Dinara Davlembayeva   +4 more
wiley   +1 more source

Numerical modeling of breach process of landslide dams due to overtopping and its application

open access: yesYantu gongcheng xuebao, 2018
As a production of natural process, the landslide dam has poor structural stability, and most of which will finally fail due to overtopping, which will pose tremendous risks to the people and property in the inundated area.
SHEN Guang-ze 1, SHENG Jin-bao 1,2, XIANG Yan 1,2, ZHONG Qi-ming 1,2
doaj   +1 more source

Two new endemic species of Portulaca (Portulacaceae) from the Brazilian Pampa grasslands

open access: yesNordic Journal of Botany, EarlyView.
Portulaca L. is a monophyletic, cosmopolitan genus of succulent plants comprising ca 153 species, with particularly high diversity in xerophytic ecosystems in tropical and subtropical regions. Based on morphological evidence, we describe and illustrate two new species from the Brazilian Pampa, Portulaca guaritensis and Portulaca guenoa.
José Roberto Ferraz   +3 more
wiley   +1 more source

A simplified physically-based breach model for a high concrete-faced rockfill dam: A case study

open access: yesWater Science and Engineering, 2018
A simplified physically-based model was developed to simulate the breaching process of the Gouhou concrete-faced rockfill dam (CFRD), which is the only breach case of a high CFRD in the world.
Qi-ming Zhong   +2 more
doaj   +1 more source

Forging environmentalism: The influence of childhood nature experiences on people's pro‐biodiversity value orientations and attitudes

open access: yesPeople and Nature, EarlyView.
Abstract With the rapid expansion of transnational biodiversity policy instruments promoting large‐scale landscape transformations that depend on public support for their success and feasibility, understanding the mechanisms underlying pro‐biodiversity attitudes has become important.
Oriol Garcia‐Antúnez   +3 more
wiley   +1 more source

System Reliability Analysis of Slope Stability of Earth Rock Dams Based on Finite Element Strength Reduction Method

open access: yesApplied Sciences
To overcome the limitations of rigid body limit equilibrium methods in earth rock dam slope stability analysis, this study develops a system reliability framework using the finite element strength reduction method (FEM-SRM).
Huibao Huang   +4 more
doaj   +1 more source

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