Results 81 to 90 of about 9,765 (263)

CONCRETE FOR LOWER KIHANSI DAM

open access: yes, 2021
  This paper presents detailed information on concrete used in the construction of Lower Kihansi Dam. The paper outlines the procedure used in concrete production, aggregate production, cement selection, concrete mix design and measures taken to avoid thermal cracks in massive dam concrete. 
openaire   +1 more source

Long‐Term Morphodynamic Responses to Flood Diversion in the Lower Kano River, Japan

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Fluvial morphodynamics—the interaction between water flow, sediment transport, and channel morphology—is a central concern in sustainable river management. However, the long‐term effects of flood diversion remain underexplored. This study investigated the decadal‐scale morphodynamic responses of the lower Kano River in Japan following the ...
Yuta Itsumi   +4 more
wiley   +1 more source

Search and Passage Are Decoupled for Migrating Trout Kelts at Multi‐Exit Dam

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Longitudinal and lateral river connectivity have been drastically reduced over time, with hydropower development as a major driver of fragmentation. While fishways are widely implemented to support upstream migration, downstream passage remains a major challenge.
Halvor Kjærås   +5 more
wiley   +1 more source

System for concrete dam reliability with respect to foundation stability

open access: yes, 2012
In order to perform a complete risk analysis of a dam facility, it is necessary to have information about the probability and consequences of failure. To analyze the probability of failure of a concrete dam, all components and all failure modes must be ...
Westberg, Mari, Johansson, Fredrik,
core  

Structure and functional genes associated with carbon, nitrogen, phosphorus, and sulfur cycling processes in periphyton: A comparison between natural and artificial rivers

open access: yesRiver, EarlyView.
Network analysis of functional genes among prokaryotes, and eukaryotes in natural and artificial rivers. Abstract Periphyton in aquatic ecosystems plays vital roles in the elemental cycle process and is vulnerable to anthropogenic interference. However, few studies have explored the elemental cycles of carbon (C), nitrogen (N), phosphorus (P), and ...
Yulu Tian   +4 more
wiley   +1 more source

Ambient vibration testing of concrete dams

open access: yes, 2011
In this thesis, seven techniques namely; rational fractional polynomial, complex exponential, frequency domain decomposition (FDD) based techniques which include; frequency domain decomposition (FDD), enhanced frequency domain decomposition (EFDD), curve
Bukenya, Patrick
core  

Evaluating the Role of Social Capital for the Design of Sustainable River Governance Strategies: The Case of Tagus River

open access: yesSustainable Development, EarlyView.
ABSTRACT This study examines the role of social capital in designing and implementing more effective governance strategies to improve the state of the Tagus River's significantly deteriorated middle reach (Spain). We employed social network analysis (SNA) to evaluate the bonding, bridging and linking social capital and the quality of stakeholder ...
Leticia Blázquez   +2 more
wiley   +1 more source

FEM-analysis of a concrete dam in northern Sweden

open access: yes, 2015
Krångfors is a concrete dam located in northern Sweden that was constructed in three stages from 1928 to 1973. This expansion in different stages resulted in a complicated structural design.
Ekström, I.   +4 more
core  

From magnesium oxide, magnesium oxide concrete to magnesium oxide concrete dams

open access: yesReviews on Advanced Materials Science
The development of magnesium oxide (MgO), magnesium oxide concrete, and magnesium oxide concrete dams in China has experienced more than 40 years. So far, more than 60 MgO concrete dams have been built in China, creating significant economic and social ...
Chen Changli, Chen Rongfei
doaj   +1 more source

How AI and Digital Technologies Can Enhance Sustainable Livestock Manure Management: An Overview From Treatment to Distribution

open access: yesSustainable Development, EarlyView.
ABSTRACT Sustainable livestock manure management sits at the nexus of climate, nutrient circularity and water quality. This review explores how artificial intelligence (AI) and digital platforms are used across four management stages, that is, treatment, storage, valorisation and distribution, and figures out where integration fails to deliver ...
Zhan Shi   +3 more
wiley   +1 more source

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