Results 81 to 90 of about 2,842,459 (265)

Synergistic Ni Single Atoms/Nanoparticles on CeO2 for High‐Performance and Durable SOFC Hydrogen Electrodes

Advanced Science, EarlyView.
Combination of UiO‐66(Ce) metal organic framework‐templated synthesis and in‐situ exsolution creates porous CeO2‐based anode decorated with Ni single atoms/nanoparticles, synergy of which leads to enhanced electronic/ionic transport, accelerated H2 oxidation, improved stability, and finally outstanding peak power density among oxide‐based SOFC anodes ...
Mengting Liu, Fengyang Yu, Qian Yang, Li Li, Yuesong Shen, Ling Huang   +5 more
wiley   +1 more source

A Laboratory Study Attempt of Flow and Energy Dissipation in Stepped Spillways

Journal of Engineering, 2016
A new laboratory study conducted on stepped spillways in order to investigate their efficiency of dissipating flow energy. All previous study on stepped spillway indicated that the flow energy dissipation decreased as increasing in discharge.
Thulfikar Razzak Abdul-Mehdi, Dr, Haider Ali Al- Mussawy, Dr, Abdul- Sahib Taufeeq Al-Madhhachi, Dr   +2 more
doaj  

Macro-turbulent characteristcs of pressures in hydraulic jump formed downstream of a stepped spillway

RBRH
Stilling basins are structures built at the base of the spillway to dissipate energy, by means of a hydraulic jump. Hydraulic jump is a turbulent phenomenon that causes large pressure fluctuation in the stilling basin bottom, and can damage the sink ...
Carolina Kuhn Novakoski, Eliane Conterato, Marcelo Marques, Eder Daniel Teixeira, Guilherme Abud Lima, Alexandre Mees   +5 more
doaj   +1 more source

Investigation of hydraulic characteristics down stream of Gabion dams [PDF]

The Egyptian International Journal of Engineering Sciences and Technology
Gabions are water structures that consist of metal mesh boxes contain rocks. This makes gabions very economic and simple. Those structures are widely used in small head works to dissipate the potential energy, and decrease scour.
Eman Elghandour, Amany Habib, Maha R. Fahmy, Eslam Eltohamy   +3 more
doaj   +1 more source

Stochastic Entanglement of Deterministic Origami Tentacles For Robust Robotic Grasping

Advanced Science, EarlyView.
This study introduces an origami tentacle gripper to robustly grasp objects‐in air, underwater, and even in orbital space‐by exploiting a synergy between local, deterministic deformation programming and global, stochastic entanglements. A single origami tentacle can be designed to coil with a simple tendon pull.
Alec Boron, Bokun Zheng, Ziyang Zhou, Noel Naughton, Suyi Li   +4 more
wiley   +1 more source

Step cavity and gabion aeration on a gabion stepped spillway [PDF]

Hydraulic structures and society - Engineering challenges and extremes, 2014
Recent advances in gabion construction techniques have increased the interest for gabion stepped spillways. The present study investigates the air entrainment process in the stepped cavity of a gabion stepped spillway through physical modelling. The microscopic air-water flow characteristics were investigated using a phase-detection probe, complemented
Gangfu Zhang, Hubert Chanson
openaire   +3 more sources

Machine Learning Interatomic Potentials for Energy Materials: Architectures, Training Strategies, and Applications

Advanced Energy Materials, EarlyView.
Machine learning interatomic potentials bridge quantum accuracy and computational efficiency for materials discovery. Architectures from Gaussian process regression to equivariant graph neural networks, training strategies including active learning and foundation models, and applications in solid‐state electrolytes, batteries, electrocatalysts ...
In Kee Park, Saeed Pourasad, Jinhong Mun, Arunkumar Chitteth Rajan, Tae Hyeon Park, Anand Rohit, Mohammad Zafari, Tan‐Lien Pham, Eunjae Jung, Bonseung Koo, Miran Ha, Gi Beom Sim, Hyun Gyu Park, Won Woong Choi, Kwanghyeon Jo, Soohaeng Yoo Willow, David ChangMo Yang, Chang Woo Myung, Geunsik Lee, Kwang S. Kim   +19 more
wiley   +1 more source

A Laboratory Study Attempt of Flow and Energy Dissipation in Stepped Spillways

Journal of Engineering, 2018
A new laboratory study conducted on stepped spillways in order to investigate their efficiency of dissipating flow energy. All previous study on stepped spillway indicated that the flow energy dissipation decreased as increasing in discharge.
Thulfikar Razzak Abdul-Mehdi, Haider Ali Al- Mussawy, Abdul- Sahib Taufeeq Al-Madhhachi   +2 more
doaj  

Free surface profile and inception point as characteristics of aerated flow over stepped spillway: Numerical study

Journal of Water and Land Development, 2019
Stepped spillway is hydraulic structure designed to dissipate the excess in kinetic energy at the downstream of dams and can reduce the size of stilling basin at the toe of the spillway or chute.
Bentalha Chakib, Habi Mohammed
doaj   +1 more source

Ordered Hydrogen Bond Network Regulates Synergistic H and OH Spillover to Promote Alkaline Hydrogen Evolution

Advanced Energy Materials, EarlyView.
Ru─Ni nanoclusters are anchored on WC via a rapid microwave quasi‐solid‐state method to build an ordered flexible interfacial hydrogen bond network. This structure boosts water dissociation and enables barrier‐free H/OH transport via the Grotthuss mechanism, forming dual H‐to‐Ru and OH‐to‐Ni spillover pathways to overcome the key challenges of alkaline
Xiangrui Zhuge, Chengfeng Wang, Xiangrui Zhuge, Wenli Yu, Qi Wu, Weiping Xiao, Lei Wang, Tianyi Ma, Zexing Wu   +8 more
wiley   +1 more source