Results 1 to 10 of about 200,521 (267)

Development and Application of Converter COMI-B Technology: A New Way of CO2 Utilization

open access: yesMetals, 2023
CO2 has characteristic properties and reactions at the converter smelting temperature, and the chemical reaction between CO2 and elements such as C and Si in the molten pool has bubble proliferation and cooling effects, which can effectively improve the ...
Chao Feng   +3 more
doaj   +1 more source

Enzyme-assisted extraction, characterization, and in vitro antioxidant activity of polysaccharides from Potentilla anserina L.

open access: yesFrontiers in Nutrition, 2023
IntroductionPotentilla anserina (Potentilla anserina L.), also known as ginseng fruit, is a plant that can be used as both medicine and food. Potentilla anserina L. has high medical value in Chinese medicine, such as strengthening the spleen and stomach,
Penghui Guo   +14 more
doaj   +1 more source

Microwave-Assisted Synthesis of MoS2/BiVO4 Heterojunction for Photocatalytic Degradation of Tetracycline Hydrochloride

open access: yesNanomaterials, 2023
Compared with traditional hydrothermal synthesis, microwave-assisted synthesis has the advantages of being faster and more energy efficient. In this work, the MoS2/BiVO4 heterojunction photocatalyst was synthesized by the microwave-assisted hydrothermal ...
Cixin Cheng   +9 more
doaj   +1 more source

Neutral Operator and Neutral Differential Equation [PDF]

open access: yesAbstract and Applied Analysis, 2011
In this paper, we discuss the properties of the neutral operator (Ax)(t) = x(t) − cx(t − δ(t)), and by applying coincidence degree theory and fixed point index theory, we obtain sufficient conditions for the existence, multiplicity, and nonexistence of (positive) periodic solutions to two kinds of second‐order differential equations with the prescribed
Jingli Ren, Zhibo Cheng, Stefan Siegmund
openaire   +3 more sources

Piezo-photocatalysis for efficient charge separation to promote CO2 photoreduction in nanoclusters

open access: yesUltrasonics Sonochemistry, 2023
The substantial emissions of CO2 greenhouse gases have resulted in severe environmental problems, and research on the implementation of semiconductor materials to minimize CO2 is currently a highly discussed subject.
Xingwang Zhu   +9 more
doaj   +1 more source

Impact of Water Content on the Superlubricity of Ethylene Glycol Solutions

open access: yesLubricants, 2023
Aqueous solutions of water and ethylene glycol (EG) are prevalently employed in braking, heat transfer, and lubrication systems. However, the precise mechanism through which water content affects the lubricative attributes of EG solutions remains elusive.
Lvzhou Li   +6 more
doaj   +1 more source

Development of Neutral and Nearly Neutral Theories [PDF]

open access: yesTheoretical Population Biology, 1996
A short history of the major features of neutral theories of molecular evolution is presented. Emphasis is placed on the nearly neutral theory, as this version of the neutral theory has explained the widest range of phenomena. The shift of interest from protein to DNA evolution is chronicled, leading to the modern view that silent and replacement ...
Ohta, Tomoko, Gillespie, John H.
openaire   +2 more sources

Insights into layered–tunnel dynamic structural evolution based on local coordination chemistry regulation for high‐energy‐density and long‐cycle‐life sodium‐ion oxide cathodes

open access: yesInfoMat, 2023
The pursuit of high energy density while achieving long cycle life remains a challenge in developing transition metal (TM) oxide cathode materials for sodium‐ion batteries (SIBs).
Yao Xiao   +15 more
doaj   +1 more source

Surface chemistry engineering of layered oxide cathodes for sodium‐ion batteries

open access: yesCarbon Neutralization, 2022
Sodium‐ion batteries (SIBs) have attracted extensive attention to be applied in large‐scale energy storage due to their low cost and abundant storage resources.
Jiayang Li   +3 more
doaj   +1 more source

Fluorinated Polyimide/Allomelanin Nanocomposites for UV-Shielding Applications

open access: yesMolecules, 2023
A series of highly fluorinated polyimide/allomelanin nanoparticles (FPI/AMNPs) films were prepared with FPI as the matrix and AMNPs as the filler. Due to the formation of hydrogen bonds, significantly reinforced mechanical and UV-shielding properties are
Qing Li   +10 more
doaj   +1 more source

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