Results 121 to 130 of about 6,257,228 (299)

Evaluation of empirical equations for scour downstream grade-control weirs

open access: yes, 2018
The grade control structures are frequently adopted in the Mountain Rivers and streams to prevent severe bed degradation and channel incision. These structures are constructed as a staircase-like sequence of transverse weirs or bed sills.
Wang, L   +5 more
core   +1 more source

Numerical investigation of downstream variations in bed‐surface characteristic grain size

open access: yesRiver, EarlyView.
Abstract The understanding of downstream fining in the characteristic grain sizes of river beds is well established, whereas downstream coarsening remains poorly understood and is often considered counterintuitive. This study has employed a one‐dimensional (1D) coupled mathematical model of nonuniform sediment transport to elucidate the mechanisms ...
Yingliang Che, Qianqian Xi, Peng Hu
wiley   +1 more source

Sacrificial piles as a countermeasure against local scour around underwater pipelines

open access: yesWater Science and Engineering
Local scour around pipelines crossing rivers or in marine environments is a significant concern. It can lead to failure of the pipelines resulting in environmental side effects and economic losses.
Forough Raeisi   +3 more
doaj   +1 more source

Business Model and Sustainable Development Goals for an Innovative Agricultural Waste Management: Distributed Biogas Production

open access: yesSustainable Development, EarlyView.
ABSTRACT Technological progress and population growth have increased global pork demand; leading to a rise of methane emission from pig farming, a key contributor to climate change. Anaerobic digestion offers a sustainable solution by converting manure into biogas.
María‐Pilar Martínez‐Hernando   +5 more
wiley   +1 more source

Analytical study of local scour

open access: yes, 1962
CER62FMC26. ; Includes bibliographical references (page 20). ; Prepared for Bureau of Public Roads under contract CPR 11-7866. ; April 1962.
Yevjevich, Vujica M., author   +2 more
openaire   +1 more source

Camels as a Climate‐Resilient Linchpin for Sustainable Development in Global Drylands

open access: yesSustainable Development, EarlyView.
ABSTRACT Camels represent a significant, yet underutilized, asset for advancing integrated sustainable development in the world's expanding drylands. Previous reviews have examined camels' physiology, milk composition, or pastoral systems in isolation; this review examines their potential as a climate‐resilient linchpin for food systems by synthesizing
Ayana Angassa   +2 more
wiley   +1 more source

Temporal variation of local scour at bridge piers with complex geometries

open access: yes, 2012
Scour at uniform cylindrical piers founded in cohesionless sediments has received much attention over the last decades and there are extensive laboratory data for these conditions in literature.
OLIVETO, Giuseppe
core   +1 more source

The Legacies of Lockdown: Moral Logics of Exchange and Mistrust in Postpandemic China

open access: yesEconomic Anthropology, EarlyView.
ABSTRACT When Shanghai entered an extended lockdown under China's Zero‐COVID policy in spring 2022, residents found themselves confined within their residential compounds, cut off from conventional supply chains, and dependent on improvised systems of local provisioning and state rationing. From the perspective of economic anthropology, such conditions
Erika Kuever
wiley   +1 more source

“Touching the Tarmac”: Conjuring the Urban Frontier on a Remote Periphery

open access: yesEconomic Anthropology, EarlyView.
ABSTRACT Anthropologists have demonstrated how the creation of land markets as “frontiers” for global capital requires practices of “conjuring”—the narrative construction of place as desirable for large‐scale investment. This article emphasizes the contingency of this conjuring process in an urbanizing Kenya where land‐selling companies have emerged to
Peter Lockwood
wiley   +1 more source

A review of recent advances in numerical modelling of local scour problems

open access: yes, 2014
A review is presented of recent advances in numerical modelling of local scour problems. The review is organized in five sections: Highlights of numerical modelling of local scour; Influence of turbulence on scour; Backfilling of scour holes; Scour ...
B Sumer, Sumer, B. Mutlu
core   +1 more source

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