Results 121 to 130 of about 34,115 (240)

Rheological Characterization and Multi‐Regime Viscosity Modeling of Diluted Polyethylene Mixtures

Polymer Engineering &Science, EarlyView.
This study maps the flow behavior of low‐density polyethylene in a recycling solvent from dilute solutions to entangled melts. By integrating time–concentration and time–temperature superposition, and coupling three complementary rheometry methods, a unified semiempirical model accurately predicts steady‐shear viscosity over nine decades of viscosity ...
Johannes Krug, Ernst Georg Viehböck, Alexander Hammer, Ursula Steiner, Christof Murnig, Martin Reichel, Christian Paulik, Gerald Berger‐Weber   +7 more
wiley   +1 more source

Experimental Investigation of Performance of Horizontal and Vertical Screen on Energy Dissipation of Inclined Drop

علوم آب و خاک, 2020
Inclined drop is one of the supercritical flow producers used in open channels to reduce slope and elevation of the ground. Given that the application of horizontal and vertical screen in the downstream of this drop as an energy dissipater can be ...
R. Daneshfaraz, M. Majedi Asl, A. Bazyar
doaj  

Observations and numerical simulations of a valley‐exit wind in the Alpine Bolzano basin

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The evolution and spreading of the nocturnal valley‐exit wind flowing from the Isarco Valley into the Bolzano basin, in the Italian Alps, are found to be influenced by the basin temperature stratification. Measurements and high‐resolution simulations show that a cold‐air pool favors an upward trajectory of the flow at the exit of the valley.
Federica Gucci, Andrea Zonato, Marco Falocchi, Dino Zardi, Lorenzo Giovannini   +4 more
wiley   +1 more source

3D‐Printed Crosslinked Nanocellulose‐MXene Hydrogels and Aerogels with High Strength and Conductivity

Small, EarlyView.
This study presents a robust strategy for 3D printing conductive, mechanically resilient MXene–CNF composite structures using a single‐step freeze‐induced crosslinking method. The printed architectures remain stable in both wet and dry states, exhibit high electrical conductivity and mechanical strength, and demonstrate practical application in fully ...
Nuzhet Inci Kilic, Kyle Matthews, Giovanni Marco Saladino, Yury Gogotsi, Per A. Larsson, Mahiar Max Hamedi   +5 more
wiley   +1 more source

Titanium Dioxide Induced Immobilization of Small Platinum Nanoparticles on Carbon Spherogels: A Strategy Towards Stable and Efficient Electrocatalysts for the Hydrogen Evolution Reaction

Small, EarlyView.
Platinum nanoparticles are immobilized on hollow carbon spherogels using supercritical deposition, enabling precise control over nanoparticle size, loading, and spatial distribution. Incorporation of an internal TiO2 sublayer in the hollow sphere support induces enhanced metal–support interactions, markedly improving hydrogen evolution activity and ...
Philip S. Pein, Ala Alsuhile, Simon Penner, Asghar Mohammadi, Gregor A. Zickler, Aseel Almohammad, Finn Baron, Mathis Kirstein, Can Erkey, Irina Smirnova, Michael S. Elsaesser, Baldur Schroeter   +11 more
wiley   +1 more source

A numerical study on aerodynamic resonance in transonic separated flow [PDF]

, 2009
An ongoing numerical investigation of unsteady shock/boundary layer interaction on a 2-d supercritical airfoil in transonic flow is presented. Initially, the finitevolume URANS solver DLR-TAU is used to simulate self-sustained periodic shock oscillations
Nitzsche, Jens
core  

Next‐Generation Aerogel Electrocatalysts for Oxygen Reduction Reaction

Small, EarlyView.
ABSTRACT Aerogel‐based electrocatalysts have become a groundbreaking class of materials for the oxygen reduction reaction (ORR), distinguished by their ultralight nature, pore networks, and outstanding electrical conductivity. Their interconnected three‐dimensional frameworks offer abundant active sites, efficient diffusion channels, and continuous ...
Kayode Adesina Adegoke, Potlaki Foster Tseki   +1 more
wiley   +1 more source

Hydraulic Optimization of Symmetric Wart-Type Baffle Spacing for Fish Passage in Open-Channel Flows

Journal of Hydrology and Hydromechanics
This study investigates the role of symmetric wart-type baffles in facilitating fish passage under supercritical flow conditions in an open-channel flume.
Anzani Hossein Sohrabzadeh, Kantoush Sameh Ahmed, Kobayashi Sohei   +2 more
doaj   +1 more source

Smart NIR‐Emitting Organometallo Pt(II)‐Ionosilica Aerogel for Selective Au(III) Sensing and Recovery

Small, EarlyView.
This study reports a near‐infrared emitting ionic aerogel composed of cationic cyclometalated Pt(II) moieties linked by Si─O─Si bonds. The resulting porous hybrid material enables the selective detection and recovery of Au(III) ions from mixed‐metal solutions. Owing to its reversible luminescent response and thiourea‐assisted gold recovery, the aerogel
Janira Herce, Veronica Torregrosa‐Rivero, Elena Serrano, Albertina Cabañas, Miguel Angel Rodríguez, Julio Fernández‐Cestau, Mattia Nieddu, Jesús Rubén Berenguer, Javier García‐Martínez   +8 more
wiley   +1 more source

Influence of Steel Recycling on Phase Transformation in Medium‐Manganese Third‐Generation Advanced High‐Strength Steels

steel research international, EarlyView.
On the pathway to climate‐neutral steel production, recycling fractions will necessarily increase over time. Since alloying elements will enrich progressively, as they cannot be removed economically from the melt, processes need to be adjusted.
Anindita Chakraborty, Radhakanta Rana, Ulrich Krupp, Alexander Gramlich   +3 more
wiley   +1 more source