Results 31 to 40 of about 12,502,488 (286)
Measurement + Control, 2023 Due to extreme operating conditions such as high-speed and heavy loads, ball screws are prone to damages, that affect the accuracy and operational safety of the mechanical equipment.
Zhijie Xie +6 more
doaj +1 more source
Mechanochemical Piezoelectric Catalysis: Advancing the Hydrogenation of Alkenes. [PDF]
Adv Sci (Weinh)This study presents mechanochemical piezoelectric catalysis for alkene hydrogenation, eliminating the need for transition metals, H2, and solvents. The method effectively hydrogenates diverse activated and unactivated alkenes and shows potential for modifying bioactive molecules in pharmaceuticals.
Ai Z +5 more
europepmc +2 more sources
Shock and Vibration, 2021 Silicon nitride ceramic bearings are widely used for their excellent performance. However, due to their special manufacturing method, cracks will occur on ceramic ball surface, and this initial surface crack will propagate under the action of cyclic ...
Zhe Yuan +5 more
doaj +1 more source
Switching Between Continuum and Discrete States in a Continuum Robot With Dislocatable Joints
IEEE Access, 2021 Rigid linkages allow robots to lift heavy loads but prevent them from gently stretching and bending their bodies. Continuum robots without rigid linkages have a wide range of motion, safety, shape adaptability, and compliance.
Ayato Kanada, Tomoaki Mashimo
doaj +1 more source
Acta Acustica, 2023 The rubber ball impact sound has been standardized by ISO 10140 series and ISO 16283-2 for laboratory and field measurements, respectively. The ISO 10052 standard specifies a survey method for the impact sound measurement using a tapping machine and a ...
Jeong Jeongho, Ryu Jongkwan
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Lubricants, 2023 To study the variation rules of nonlinear stiffness of double-row angular contact ball bearings (DR-ACBB), this paper proposed a general mathematic model for DR-ACBB under three different configurations based on the improved quasi-static model of ball ...
Bin Fang, Jinhua Zhang, Jun Hong, Ke Yan
doaj +1 more source
International Conference on Pioneer and Innovative Studies, 2023 This paper presents a polynomial-based approach for efficiently computing functions ofsymmetric matrices by leveraging the Restarted Heavy Ball (RHB) method.
Gul Karaduman
semanticscholar +1 more source
Distributed Heavy-Ball: A Generalization and Acceleration of First-Order Methods With Gradient Tracking [PDF]
IEEE Transactions on Automatic Control, 2020 We study distributed optimization to minimize a global objective that is a sum of smooth and strongly-convex local cost functions. Recently, several algorithms over undirected and directed graphs have been proposed that use a gradient tracking method to achieve linear convergence to the global minimizer.
Ran Xin, Usman A. Khan
openaire +2 more sources
Monitoring Viscosity of Polymer Products on the Reactor Tank Using IoT-based NodeMCU
Jurnal Teknik Industri, 2023 Viscosity is one of the critical parameters for polymer products; thus, monitoring the viscosity level is very important to know during the production process and production results. The Polymer Company recently suffered heavy losses due to an explosion
Paduloh Paduloh
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Cellulose Nanocrystals (CNCs) and Cellulose Nanofibers (CNFs) as Adsorbents of Heavy Metal Ions
Journal of Chemistry, 2023 The isolation of nanocellulose has been extensively investigated due to the growing demand for sustainable green materials. Cellulose nanocrystals (CNCs) and cellulose nanofibers (CNFs), which have the same chemical composition but have different ...
Tjhang Winny Kurniawan +3 more
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