Results 1 to 10 of about 1,842,770 (342)

An Investigation into the Effect of Rolling Reduction on 3D Curved Parts Rolling Process

open access: yesMetals, 2021
Rolling technology based on arc-shaped rollers is a novel method for rapid manufacturing of 3D curved parts. The method uses a pair of arc-shaped rollers (a convex roller and a concave roller) as forming tools, forming an unevenly distributed roll gap ...
Xiang Chang   +5 more
doaj   +1 more source

Schoolchildren as Agents of Change towards Antimicrobial Resistance

open access: yesMedical Sciences Forum, 2023
Schoolchildren are in their formative years, and therefore at an ideal stage in their lives to take in knowledge and best practices that will guide their future behavior.
Michael Mosha   +6 more
doaj   +1 more source

Prediction and prevention of fracture defect in plastic forming for aluminum foam sandwich panel

open access: yesJournal of Materials Research and Technology, 2021
In this study, the predicting and avoiding method of core fracture in plastic forming for aluminum foam sandwich panel (AFSP) were investigated. By observing the macroscopic core cracks and microscopic morphology of the fracture surfaces, the core ...
Xi Zhang, Qing-Min Chen, Zhong-Yi Cai
doaj   +1 more source

Hollow Silica Particles: Recent Progress and Future Perspectives

open access: yesNanomaterials, 2020
Hollow silica particles (or mesoporous hollow silica particles) are sought after for applications across several fields, including drug delivery, battery anodes, catalysis, thermal insulation, and functional coatings.
Jaswinder Sharma, Georgios Polizos
doaj   +1 more source

A Biomimetic Basalt Fiber/Epoxy Helical Composite Spring with Hierarchical Triple-Helix Structures Inspired by the Collagen Fibers in Compact Bone

open access: yesBiomimetics, 2022
The lightweight property of helical composite spring (HCS) applied in the transportation field has attracted more and more attention recently. However, it is difficult to maintain stiffness and fatigue resistance at the same time.
Jiahui Wang   +11 more
doaj   +1 more source

A Highly Sensitive Piezoresistive Pressure Sensor Based on Graphene Oxide/Polypyrrole@Polyurethane Sponge

open access: yesSensors, 2020
In this work, polyurethane sponge is employed as the structural substrate of the sensor. Graphene oxide (GO) and polypyrrole (PPy) are alternately coated on the sponge fiber skeleton by charge layer-by-layer assembly (LBL) to form a multilayer composite ...
Bing Lv, Xingtong Chen, Chunguo Liu
doaj   +1 more source

A Targetless Method for Simultaneously Measuring Three-Degree-of-Freedom Angular Motion Errors with Digital Speckle Pattern Interferometry

open access: yesSensors, 2023
As a guide rail is the basic motion unit of precision equipment, the measurement of and compensation for its motion errors are important preconditions for precision machining and manufacturing.
Lili Shi, Sijin Wu, Miao Yan, Haisha Niu
doaj   +1 more source

Dynamic Recrystallization Behavior of Q370qE Bridge Steel

open access: yesChinese Journal of Mechanical Engineering, 2023
Bridge steel has been widely used in recent years for its excellent performance. Understanding the high-temperature Dynamic Recrystallization (DRX) behavior of high-performance bridge steel plays an important role in guiding the thermomechanical ...
Caiyi Liu   +8 more
doaj   +1 more source

Strength Analysis of a Novel High-Pressure Die with Double-Layered Split Structure

open access: yesMetals, 2018
A novel double-layered split die (DLSD) was designed to have higher pressure-bearing capacity and larger sample cavity volume. In DLSD, the cylinder and first layer supporting ring are split into several blocks.
Zhuo Yi   +5 more
doaj   +1 more source

Inflationary Dynamics with a Smooth Slow-Roll to Constant-Roll Era Transition [PDF]

open access: yes, 2017
In this paper we investigate the implications of having a varying second slow-roll index on the canonical scalar field inflationary dynamics. We shall be interested in cases that the second slow-roll can take small values and correspondingly large values,
Odintsov, S. D., Oikonomou, V. K.
core   +2 more sources

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