Results 71 to 80 of about 2,842,459 (265)

Evaluating the Effect of Anti-Vortex Plates on Discharge Coefficient in Short Throat Shaft Spillway [PDF]

Journal of Hydraulic and Water Engineering
Knowing more about the flow behavior of short-stepped shaft spillways helps to use this structure better and more efficiently. Moreover, using a vortex breaker greatly affects passing flow through Shaft Spillway. For use more efficiently, the risk of the
Roozbeh Aghamajidi
doaj   +1 more source

Data‐Driven Bulldozer Blade Control for Autonomous Terrain Leveling

Advanced Robotics Research, EarlyView.
A simulation‐driven framework for autonomous bulldozer leveling is presented, combining high‐fidelity terramechanics simulation with a neural‐network‐based reduced‐order model. Gradient‐based optimization enables efficient, low‐level blade control that balances leveling quality and operation time.
Harry Zhang, Ganesh Arivoli, Huzaifa Unjhawala, Luning Bakke, Radu Serban, Dan Negrut   +5 more
wiley   +1 more source

Computational Fluid Dynamics Modeling of Flow over Stepped Spillway

Tikrit Journal of Engineering Sciences, 2016
In present paper, the computational fluid dynamics (CFD – program Flow-3D) was used to analyze and study the characteristics of flow energy dissipation over stepped spillways. Three different spillway heights (15, 20 and 25cm) were used. For each one of
Raad H. Irzooki, Jowhar R. Mohammed, Afnan S. Ameen   +2 more
doaj   +3 more sources

Energy Dissipation on Stepped Spillways [PDF]

Journal of Hydraulic Engineering, 1995
The author provided interesting data on stepped spillway flows. The writer would like to add some information on flow resistance of skimming flows and discuss the energy dissipation on stepped chutes. It will be shown that the author's results are not dissimilar with results previously obtained by other researchers.
openaire   +3 more sources

Agnuside Stabilizes the Complex I Assembly Factor NDUFAF6 to Reinforce Mitochondrial Efficiency and Thermogenic Responsiveness

Advanced Science, EarlyView.
ABSTRACT Brown and beige adipocytes dissipate energy as heat, yet effective strategies to enhance their mitochondrial efficiency remain limited. Here, we identify Agnuside (AGN) as a selective stabilizer of the complex I assembly factor NDUFAF6. AGN directly binds cytosolic NDUFAF6, suppresses its ubiquitination, prolongs its half‐life, and facilitates
Qingwen Zhao, Li Xie, Qianzhuo Wang, Shuying Dai, Bei Li, Yingjuan Zhang, Zhe Sun, Yue Gao   +7 more
wiley   +1 more source

Location of inception point of alternating steps stepped spillways

Sulaimani Journal for Engineering Sciences, 2023
This study explored the effects of flat-stepped spillways having alternating steps on the inception point location. Two wooden stepped spillways with a longitudinal slope of 26.6° were constructed in a rectangular flume and tested at various discharges, ranging from 0.003 to 0.05 m3/s.
Burhan S. Muhammed1, Kawa Z. Abdulrahman2   +1 more
openaire   +2 more sources

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

Advanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas, Ankan Dutta, Shuvendu Das, Abu Musa Abdullah, Wanqing Zhang, Fatema Tuz Zohra, Huanyu Cheng   +6 more
wiley   +1 more source

Confinement‐Driven CO Spillover in CuAg@MSN Tandem Catalysts Boosts C2 Selectivity Toward Electrocatalytic CO2 Reduction

Advanced Science, EarlyView.
The CuAg@MSN catalyst developed in this study promotes C─C coupling by regulating the coverage of *CO intermediates through spatial confinement effects, significantly enhancing the selectivity of CO2 electroreduction for C2 product formation. ABSTRACT Tandem catalysts represent a promising paradigm for synergistic electrochemical CO2 reduction (CO2RR ...
Jiaying Zhang, Junjie Huang, Siying Zhang, Yanjia Cui, Chao Kong, Zijian Peng, Huihui Jiang, Sirui Deng, Zhuoyao Chen, Caili Yang, Ketong He, Zhen Li, Yibing Song, Gongwei Wang, Lin Zhuang   +14 more
wiley   +1 more source

Key Drivers of Activity and Selectivity in Cu‐Based Catalysts for Methanol Synthesis From CO2: Insights From Atomically Dispersed Promoters

Angewandte Chemie, EarlyView.
Mechanistic studies on model Cu─M/SiO2 catalysts (M = Zn, Ga, and In) reveal that promoters enable a formate spillover pathway from Cu to Mn+ (n = 2 or 3) sites. The promoter's electronic effect on formate bond strengths serves as a quantitative descriptor for activity and selectivity, balancing spillover dynamics with intermediate stabilization to ...
Nat Phongprueksathat, Gina Noh, Scott R. Docherty, Damian Vico van Berkel, Yannik Stiefel, Christophe Copéret, Atsushi Urakawa   +6 more
wiley   +2 more sources

Prediction of air concentration in stepped spillways using data-oriented methods [PDF]

محیط زیست و مهندسی آب
The high flow velocity and the pressure reduction in the spillways cause damage to the spillways. In the present research, the application of Gaussian Process Regression (GPR) and Support Vector Machine (SVM) was investigated for predicting air ...
Kiyoumars Roushangar, Hamidreza Abbaszadeh, Reza Saadatjoo, Aydin Panahi   +3 more
doaj   +1 more source