Results 41 to 50 of about 13,463 (305)
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 +6 more
wiley +1 more source
Insights into the Oroville Dam 2017 Spillway Incident
Geosciences, 2019 In February 2017, a failure occurring in Oroville Dam’s main spillway risked causing severe damages downstream. A unique aspect of this incident was the fact that it happened during a flood scenario well within its design and operational procedures,
Aristotelis Koskinas +7 more
doaj +1 more source
Pyramidal vortex breakers influences on the flow discharge of morning glory spillway
Ain Shams Engineering Journal, 2020 Vortex is the basic obstacle envisaged in the morning glory spillways that can lead to the reduction of spillway efficiency due to decreasing the discharge coefficient.
Farzaneh Sayadzadeh +3 more
doaj +1 more source
Study On Scouring and Protection of USBR-III Type Downstream of Spillway
Jurnal Teknik Sipil dan Perencanaan, 2022 . In the downstream part of the spillway building, especially in the flood way, occurs phenomenon of changing flow conditions from super critical to sub critical which causes a hydraulic jump and used by energy absorbers to reduce flow energy.
Lutfi Hair Djunur
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Advanced Science, EarlyView.Furrow tillage resolves the conventional‐vs.‐no‐tillage trade‐off by simultaneously cutting CO2 efflux to 2.0–3.0 g C m−2 d−1 and unlocking high nutrient availability for the rice rhizosphere. This scalable agronomic solution strengthens soil health, enhances plant physiology, reshapes microbial metabolism, and shifts paddy systems toward a net ...
Arnab Majumdar +10 more
wiley +1 more source
工程科学与技术, 2010 :The hydraulic characteristics of smooth spillway, stepped spillway and pre-aerator stepped spillway were studied. The experimental investigations showed that the pre-aerator equipment can not only keep the stepped spillway’s large energy dissipation ...
Chen Jian-Gang +2 more
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Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2016 The paper is focused on a hydraulic problem of water overfall on hydrotechnic structures, especially outlets and spillways of water reservoirs. The main parameter of such structures is its discharge capacity depending on overfall coefficient, dimensions ...
Petr Pelikán, Jana Marková
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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 +4 more
wiley +1 more source
Advanced Science, EarlyView.Strong metal‐support interactions (SMSI) drive the spontaneous segregation of RuPt alloy into Janus nanoparticles on CeO2, spatially partitioning Pt‐rich domains for H2 dissociation and Ru‐rich domains for toluene adsorption. This Janus nanocatalysts yield a turnover frequency of 10 906 h−1 for toluene hydrogenation at 50 °C, which is 6.7 times that of
Xingyu Zhang +5 more
wiley +1 more source
A Proposed Method to Estimate Climate Change Impacts on Dam's Spillway Design Flood
Journal of Flood Risk ManagementOvertopping of a dam, which can be due to inadequate spillway design, is often a precursor to dam failure. Generally, dam spillways are designed using historical hydro‐meteorological records.
Mohammad Reza Khazaei
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