Results 1 to 10 of about 4,373 (207)

Texture and anisotropy of hot-pressed h-BN matrix composite ceramics with in situ formed YAG

open access: yesJournal of Advanced Ceramics, 2022
Textured hexagonal boron nitride (h-BN) matrix composite ceramics were prepared by hot-pressing using different contents of 3Y2O3āˆ’5Al2O3 (molar ratio of 3:5) as the sintering additive.
Zhuo Zhang   +10 more
doaj   +1 more source

Gas-solid fluidization modification of calcium carbonate for high-performance poly (butylene adipate-co-terephthalate) (PBAT) composites

open access: yesFrontiers in Chemistry, 2023
Modifying biodegradable poly (butylene adipate-co-terephthalate) (PBAT) plastic with inorganic fillers is critical for improving its overall performance, lowering the costs, and expanding its application scope.
Jinzhi Shang   +8 more
doaj   +1 more source

Experimental Study on the Reduction Effect of Pit Texture on Disassembly Damage for Interference Fit

open access: yesChinese Journal of Mechanical Engineering, 2023
After remanufacturing disassembly, several kinds of friction damages can be found on the mating surface of interference fit. These damages should be repaired and the cost is closely related to the severity of damages.
Dan Zhou   +4 more
doaj   +1 more source

A highly efficient defective carbon catalyst for oxidative coupling of amines

open access: yesCatalysis Communications, 2023
Porous carbons were prepared from tea peels, and employed as the catalyst for oxidative coupling of benzylamine. An optimal tea peel carbon (TPC-2-800) shows large specific surface area of 1715 m2 gāˆ’1 and excellent catalytic performance for benzylamine ...
Ji-Xiao Zhao   +3 more
doaj   +1 more source

Preparation and anisotropic properties of textured structural ceramics: A review

open access: yesJournal of Advanced Ceramics, 2019
Ceramics are usually composed of randomly oriented grains and intergranular phases, so their properties are the statistical average along each direction and show isotropy corresponding to the uniform microstructures.
Zhuo Zhang   +7 more
doaj   +1 more source

Direct ink writing of continuous SiO2 fiber reinforced wave-transparent ceramics

open access: yesJournal of Advanced Ceramics, 2020
This article reports the first example of 3D printed continuous SiO2 fiber reinforced wave-transparent ceramic composites via an adaptation of direct ink writing technology to improve the mechanical and dielectric properties of ceramics. The ceramic inks
Zhe Zhao   +5 more
doaj   +1 more source

All-cellulose Composites Fabricated by in-situ Welding

open access: yesBioResources, 2023
As a consequence of increasingly serious environmental problems, many researchers are highlighting biomass materials. Cellulose, the most abundant bioresource, is becoming a key consideration for alleviating environmental pollution.
Meixue Gan   +6 more
doaj   +2 more sources

The role of Ce doping on the activity of La2O2CO3 nanosheets catalysts in synthesis of dimethyl carbonate from propylene carbonate and methanol

open access: yesCatalysis Communications, 2022
Dimethyl carbonate (DMC) production from the transesterification reaction of propylene carbonate (PC) and methanol is an eco-friendly and economical process with propylene glycol (PG) as the high value-added co-product.
Yun Xue   +7 more
doaj   +1 more source

A Terahertz Polarizer Based on Multilayer Metal Grating Filled in Polyimide Film

open access: yesIEEE Photonics Journal, 2016
Terahertz (THz) polarizers with low reflection and absorption loss and high polarization extinction ratio (PER) based on multilayer metallic gratings filled in a polyimide film were studied theoretically and experimentally.
Hong-Yan Mao   +9 more
doaj   +1 more source

Effects of hyperbaric oxygen therapy on EEG and sEMG signals after low-load exercise [PDF]

open access: yesPeerJ
Objective To evaluate the effect of hyperbaric oxygen therapy (HBOT) on acute exercise-induced fatigue via electroencephalogram (EEG) signal and surface electromyography (sEMG) signal, with the aim of providing a theoretical basis and methodological ...
Beilun Fu   +6 more
doaj   +2 more sources

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