Results 101 to 110 of about 30,626 (294)

Natural Anthraquinone‐Like Compound Extracted from Green Husk of Walnut Improves Photocatalytic H2O2 Production Catalyzed by TiO2 Nanoparticles

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
In this work, a novel biomolecule/semiconductor hybrid catalyst was prepared by loading anthraquinone‐liked juglone onto anatase TiO2. This catalyst exhibited high photocatalytic activity for H2O2 production. Hydrogen peroxide (H2O2) is a vital oxidant with broad industrial applications, and its production via photocatalysis represents a highly ...
Zengyin He   +4 more
wiley   +1 more source

High‐Coverage Nanometric MOx (M = Ir, Rh) Clusters Anchored on Spinel Co3O4 Matrix With Amorphous/Crystalline Heterostructure Harness Efficient Water Electrolysis

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Strong interfacial electronic coupling between nanometric MOx (M = Ir and Rh) clusters and the spinel matrix optimizes the electronic environment and redistributes spatial charge, thereby enabling efficient water electrolysis. Architecting nanometric cluster electrocatalysts with high density of active atoms offers a valuable avenue to simultaneously ...
Jiao Wu   +7 more
wiley   +1 more source

Sustainable Revival of Spent Lithium Iron Phosphate Cathodes in Li‐Ion Batteries: Recycling and Surface Engineering Approaches

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Schematic illustration of the lifecycle of LiFePO4 cathodes. Lithiation and delithiation reactions happen through its discharging and charging processes. Recycling pathways including hydrometallurgy, pyrometallurgy, and direct regeneration enable sustainable reuse of spent LFP materials. Surface modification approaches (carbon, polymer, and metal/metal
Yan He, Ruigang Wang
wiley   +1 more source

Fundamental tribological properties of ion-beam-deposited boron nitride films [PDF]

open access: yes
The adhesion, friction, and micromechanical properties of ion-beam-deposited boron nitride (BN) films are reviewed. The BN films are examined in contact with BN metals and other harder materials.
Miyoshi, Kazuhisa
core   +1 more source

Linear‐Nonlinear‐Linear Sandwich‐Structured Polymer Composites With Metal‐Organic Framework (MOF)‐Enhanced Insulating Layers and Horizontally Oriented Nanotube‐Filled Polarization Layer for High Energy Storage Performance

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A linear‐nonlinear‐linear (LNL) sandwich dielectric film was rationally designed for high energy storage. Its outer linear layers are MOF (ZIF‐8)‐enhanced PEI composites (EZ), and the middle nonlinear layer is an electrospun‐hot‐pressed P(VDF‐HFP)/TNTs composite (PT) with horizontally oriented TNTs.
Yanpeng Li   +7 more
wiley   +1 more source

MAIN PROBLEMS OF MOULDING OF SILUMINS. WAYS OF SOLUTION

open access: yesЛитьë и металлургия, 2016
The main problems of silumin’ moulding are connected with insufficient modifying of casting structure, their considerable inclination to gas porosity, difficult to remove nonmetallic inclusions and these features are shown in the article.
E. I. Marukovich, V. Yu. Stetsenko
doaj  

Sample positioning in microgravity [PDF]

open access: yes
Repulsion forces arising from laser beams are provided to produce mild positioning forces on a sample in microgravity vacuum environments. The system of the preferred embodiment positions samples using a plurality of pulsed lasers providing opposing ...
Sridharan, Govind
core   +1 more source

Injuries, Illnesses, and Fatal Injuries in Mining in 2010 [PDF]

open access: yes, 2013
[Excerpt] Workers in the mining industry continue to face a higher risk of fatal injury than average American workers. Although the rate of nonfatal injuries and illnesses in mining is less than the average reported for private industry, these injuries ...
Smith, Sean
core   +1 more source

Fermentation‐Induced Modulation of Polyphenolic Contents and Medicinal Activities in Annona squamosa Seeds

open access: yesFood Chemistry International, EarlyView.
The study compared the medicinal activities of polyphenols from fermented and unfermented seeds of Annona squamosa. The polyphenols were extracted and subjected to standard analysis. The major phenolic components of the fermented polyphenols and the unfermented polyphenols were found to be 4‐hydroxybenzoic and 4‐hydroxyphenylacetic acid, respectively ...
Shola Hezekiah Awojide   +10 more
wiley   +1 more source

Structural Analysis of the Formal and Informal Jobs in the Brazilian Economy [PDF]

open access: yes
The reorganization of the Brazilian economy, in the globalization process, has brought out changes in its productive structure, and, consequently, changes in the job market.
Fernanda Sartori Camargo   +1 more
core  

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