Results 71 to 80 of about 824,135 (227)

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

Including Lifetime Hydraulic Turbine Cost into Short-Term Hybrid Scheduling of Hydro and Solar

Energies
In traditional short-term hydropower scheduling problems, which usually determine the optimal power generation schedules within one week, the off-design zone of a hydraulic turbine is modeled as a forbidden zone due to the significantly increased risk of
Jiehong Kong, Igor Iliev, Hans Ivar Skjelbred   +2 more
doaj   +1 more source

DETERMINATION OF TURBINE EFFICIENCY FOR SMALL HYDRO POWER PLANTS [PDF]

Journal of Sustainable Energy, 2020
In this paper, authors briefly present the methods for determining the efficiency/performance of a hydraulic turbine, as well as the purpose, the necessity of applying in situ determination methods of the efficiency of hydraulic turbines from a ...
PURECE. C., CORLAN L., PLEŞCA V.
doaj  

Sex‐Specific Atlantic Salmon Upstream Passage and Fallback at a Natural Cascade After Dam Removal

Fisheries Management and Ecology, EarlyView.
ABSTRACT In the Boquet River (NY, USA) a low‐head dam set above a ~200‐m bedrock cascade was removed in 2015. We used radio‐telemetry to assess landlocked Atlantic salmon passage at the remaining cascade (2020, 2022). Across years, 52% of males (13/25) attempted cascade passage whereas females made no discernable attempts (0/11).
Kurt C. Heim, Jonah L. Withers, William R. Ardren, Laurie A. Earley, David Minkoff, Theodore Castro‐Santos   +5 more
wiley   +1 more source

China's Export Surge and the Persistence of Machinery Competitiveness: Panel Evidence From 25 Countries

The World Economy, EarlyView.
ABSTRACT China's rapid ascent as a global machinery exporter raises fundamental questions about competitive resilience of incumbent economies. This paper examines whether China's gains in revealed comparative advantage (RCA) are associated with declining competitive positions among 24 incumbent economies and whether such changes coincide with ...
Hyungbae Gil, Oonkyu Lee, Hangjung Zo
wiley   +1 more source

A Detailed Review of Colburn and Friction Factors for Various Types of Fins Used in Compact Plate‐Fin Heat Exchangers

Heat Transfer, Volume 55, Issue 6, Page 3495-3522, September 2026.
ABSTRACT Compact plate‐fin heat exchangers (PFHEs) are commonly utilized in diverse industries, including aerospace, automotive, processing, and space. Various fin configurations, such as Plain fins, Wavy fins, Lance and Offset fins (OSFs), Perforated fins, louvered fins, and pin fins, are employed in compact heat exchangers (CHEs).
Chennu Ranganayakulu
wiley   +1 more source

Cascade Optimization of an Axial-Flow Hydraulic Turbine Type Propeller by a Genetic Algorithm

International Journal of Technology, 2019
This study proposes the use of the genetic algorithm (GA) method in hydraulic turbine optimization for renewable energy applications. The algorithm is used to optimize the performance of a two-dimensional hydrofoil cascade for an axial-flow hydraulic ...
Q. M. B. Soesanto, P. Widiyanto, A. Susatyo, E. Yazid   +3 more
semanticscholar   +1 more source

Enhanced Assessment of Offshore Wind Resources for the Southeastern Coastal Region of China Using 4‐km WRF Modeling

Wind Energy, Volume 29, Issue 9, September 2026.
ABSTRACT Offshore wind energy development in China's coastal regions represents a critical pathway toward achieving carbon neutrality goals, yet accurate resource assessment remains challenging due to complex marine meteorological conditions. This study presents a comprehensive evaluation of offshore wind resources in Fujian Province using convection ...
Jiarong Fan, Yanping Li, Guanghong Liao, Ya Huang, Zixiu Yu, Weidong Ji, Wenfei Xue, Dingjia Ye, Zhenhua Li   +8 more
wiley   +1 more source

Quantifying Fiber Bridging in Mode I Fatigue Delamination of CFRP/GFRP Hybrid Laminates Using a Superposed Traction–Separation Model

Fatigue &Fracture of Engineering Materials &Structures, Volume 49, Issue 9, Page 3605-3615, September 2026.
ABSTRACT Hybrid CFRP/GFRP laminates offer an attractive balance between mechanical performance, damage tolerance, and cost efficiency. However, fiber bridging during mode I delamination increases crack‐growth resistance while masking the intrinsic fatigue behavior of the material. This study applies a traction–separation‐based superposition approach to
Francisco Maciel Monticeli
wiley   +1 more source

Thermoplastic‐Resin Transfer Molding Technology: Development and Challenges Toward Industrialization

Polymer Composites, Volume 47, Issue 15, Page 13317-13358, 10 August 2026.
Illustration of the key aspects involved in the manufacture of thermoplastic composites by T‐RTM highlighting the relationships between raw materials, resin mixing strategies, polymerization parameters, and processing equipment ranging from laboratory to industrial scale. ABSTRACT Driven by increasingly stringent international environmental regulations,
Filipe P. Martins, Paulo S. Lima, Ricardo Torcato, Laura Santos, J. M. Oliveira   +4 more
wiley   +1 more source