Results 91 to 100 of about 2,008,011 (306)

Investigation of manufacturing bilayer gears using flow forming process to enhance the strength of gears

Scientific Reports
Due to the widespread industrial use of gears, a mass production method with high economic efficiency is essential. Flow forming is a novel manufacturing technique that not only forms the gear but also performs hardening by adding a thin layer of desired
Majid Khodadadi
doaj   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

Selection schemes of formation hollow parts with the taperid surface

Вестник СибАДИ, 2017
It describes different technologies obtained by cold forming of hollow parts with conical surfaces of solid and tubular billets, analyzed the advantages and disadvantages of certain methods of deformation.
A. V. Evstifeev, A. A. Alexandrov, V. V. Evstifeev   +2 more
doaj   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

FEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

THE EVOLUTION TRAJECTORY STABILITY FOR MECHANICAL SYSTEM INTERACTING WITH TRIBOMEDIA

Вестник Донского государственного технического университета, 2018
Conditions of motion stability loss is considering relative to mechanical system, interacting with media, forming in tribocoupling. Conditions of forming and role of dissipative, gyroscopic, potential and circular forces, which formed naturally in ...
V.L. ZAKOVOROTNY, DONG ANH NGUYEN, DINH TUNG PHAM   +2 more
doaj  

A Study on the Influence of the Forming Strategy on the Main Strains, Thickness Reduction, and Forces in a Single Point Incremental Forming Process

Advances in Materials Science and Engineering, 2013
This paper comprises an experimental study for a complex geometry part obtained by incremental forming. Due to the process complexity (the presence of forces on three directions—a vertical one and two in the blank's plane), a three axes CNC milling ...
Adrian Blaga, Valentin Oleksik
doaj   +1 more source

State position on the existing contradictions of operational staff as governing body of modern regional law enforcement forces

Теорія і практика правознавства, 2016
We consider the contradictions existing state position on the use of the operations staff as the governing body of modern regional law enforcement forces and trends in substance to overcome them are the following: a) the essence contradictions that arise
Микола Михайлович Орлов
doaj   +1 more source

Applications of Electromagnetic Forming Technology at the Wuhan National High Magnetic Field Center [PDF]

, 2018
The research of the electromagnetic forming (EMF) technology at the Wuhan National High Magnetic Field Center (WHMFC) has focused on designing electromagnetic system for generating a more flex-ible and strong Lorentz forces acting on workpieces, and then
Lai, Zhipeng, Cao, Quangliang, Liu, Ning, Deng, Fangxiong, Li, Liang, Chen, Meng, Chen, Qi, Li, Xiaoxiang, Han, Xiaotao, Huang, Yuje   +9 more
core   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

FEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source