Results 31 to 40 of about 6,461,686 (138)

Transfer‐Aided Deep Learning for Life Cycle Assessment Prediction of Precursor Molecules

open access: yesChemSusChem, Volume 19, Issue 19, 14 October 2026.
Transfer learning from commercial prices of molecules was found to increase the accuracy of machine learning models’ predictions of the environmental impacts of manufacturing simple organic molecules. This effect was verified for three separate model architectures. To date the environmental impacts of production of most chemicals are unknown, hindering
Michael Y. Zhou   +4 more
wiley   +1 more source

DFIG versus PMSG for marine current turbine applications [PDF]

open access: yes, 2012
Emerging technologies for marine current turbine are mainly relevant to works that have been carried out on wind turbines and ship propellers. It is then obvious that many electric generator topologies could be used for marine current turbines. As in the
BENELGHALI, Seifeddine   +3 more
core  

Correlating Sediment Erosion in Rotary–Stationary Gaps of Francis Turbines with Complex Flow Patterns

open access: yesEnergies
Secondary flows in Francis turbines are induced by the presence of a gap between guide vanes and top–bottom covers and rotating–stationary geometries. The secondary flow developed in the clearance gap of guide vanes induces a leakage vortex that travels ...
Nirmal Acharya   +4 more
doaj   +1 more source

Dam Management in the Era of Climate Change

open access: yesMathematical Finance, Volume 36, Issue 4, Page 870-895, October 2026.
ABSTRACT Climate change has a dramatic impact, particularly by concentrating rainfall into a few short periods, interspersed with long dry spells. In this context, the role of dams is crucial. We consider the optimal control of a dam, where the water level must neither exceed a designated safety threshold nor fall below a minimum level to ensure ...
Cristina Di Girolami   +3 more
wiley   +1 more source

Fall Convocation Saint Francis Xavier University November 14, 1976 [PDF]

open access: yes, 1976
Convocation pamphlet published by St.

core  

Influence of tungsten carbide spray treatment on anti-wear performance of Francis turbine runner blades surface

open access: yesAdvances in Mechanical Engineering
Based on the velocity similarity theory, a test system for sediment wear flow around Francis turbine runner blades was established. The sediment wear test was carried out on the surface of Francis turbine runner blades with severe sediment wear before ...
Bing Yao   +6 more
doaj   +1 more source

Embedding Rule‐Based Augmented Reality Scaffolding in Experiential Learning Cycles: An SEM Study of Student Engagement in Lab‐Based STEM

open access: yesComputer Applications in Engineering Education, Volume 34, Issue 5, September 2026.
ABSTRACT Augmented reality (AR) is increasingly used in STEM laboratories, but its pedagogical value depends on how digital guidance is embedded within structured physical learning activities rather than on technological novelty alone. This study examined an AR‐supported hydropower laboratory activity designed around Kolb's experiential learning cycle ...
Khuong Nguyen‐Vinh   +3 more
wiley   +1 more source

Internal flow characteristics in the draft tube of a Francis turbine under different working conditions

open access: yesAdvances in Mechanical Engineering
The Francis turbine stability is impacted significantly by the flow characteristics in its draft tube. In the case of a Francis turbine in a hydropower plant, numerical simulations were undertaken at the maximum and rated heads, respectively, under three
Yuanhang Hou   +7 more
doaj   +1 more source

High‐Temperature Alloys in Aeroengines: Damage and Fracture Insights From Micromechanical Modeling

open access: yescMat, Volume 3, Issue 3, September 2026.
ABSTRACT High‐temperature alloys are the cornerstone of aeroengine hot‐section components, where extreme thermomechanical conditions give rise to intricate damage and fracture behaviors that critically limit the structural integrity of whole aeroengines.
Zixu Guo   +8 more
wiley   +1 more source

The Dynamic Characteristics and Control of a Hydraulic Turbine

open access: yesMeasurement + Control, 1969
A dynamic model of a radial flow turbine was derived. The model was verified by tests on an experimental 5 hp Francis type turbine. The tests indicate that the model is adequate for control system design.
I. Djordjevic Dipl.Ing   +3 more
doaj   +1 more source

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