Results 51 to 60 of about 444,424 (262)

Finite Element Analysis and Investigation on Spinning of Quadrilateral Parts with Hollow Cross-Sections Based on Hypocycloid Theory

open access: yesApplied Sciences, 2020
This paper presents research on a new high-efficiency, non-circular spinning method based on hypocycloid theory. The trajectory of the roller during the forming process was derived, and the non-circular spinning process was simulated in ABAQUS 2016 ...
Xibin Ou   +8 more
doaj   +1 more source

The mathematical model of non-circular crossed-axis gear

open access: yesAdvances in Mechanical Engineering, 2023
Non-circular crossed gear can be regarded as the general form of the single stage gear, which can be converted into hypoid gearing, non-circular bevel gearing, non-circular external gearing, and non-circular internal gearing with specific parameters ...
Can Yang   +3 more
doaj   +1 more source

Non Circular Disks in am CVn Systems? [PDF]

open access: yesInternational Astronomical Union Colloquium, 1996
The AM CVn stars are mass transferring, interacting binary, white dwarf systems with orbital periods of 15…45 minutes. Hydrogen is completely lost from these systems, and we observe small helium disks which may show thermal and tidal instabilities if the mass transfer rate is large enough (Osaki 1995).
openaire   +1 more source

Modulation of Homer1 EVH1 domain internal dynamics by putative autism‐associated mutations

open access: yesFEBS Letters, EarlyView.
The putative autism‐associated M65I and S97L variants of the EVH1 domain of the postsynaptic scaffold protein Homer1 do not exhibit substantial changes in their overall structure or partner binding. Both of them, but especially the M65I variant, show altered internal dynamics relative to the wild‐type domain on the μs‐ms timescale, indicated by the ...
Fanni Farkas   +6 more
wiley   +1 more source

Research of Measurement Technology of 3D Tooth Surface Error of Non-circular Gear

open access: yesJixie chuandong, 2019
In order to improve the measurement accuracy of non-circular gears, a three-dimensional measurement method for non-circular gear tooth surfaces is proposed. According to the basic meshing principle of the non-circular gear, the tooth surface model of the
Yongping Liu   +4 more
doaj  

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Cell geometry and membrane protein crowding constrain Escherichia coli growth rate, overflow metabolism, respiration, and maintenance energy

open access: yesFEBS Letters, EarlyView.
The physical dimensions and shape of bacterial cells define the surface area available to acquire nutrients and the volume available for synthesizing proteins and DNA. Here, we use computational systems biology to decode the importance of cell geometry as a major determinant of prokaryotic phenotype, including growth rate and metabolic efficiency. This
Ross P. Carlson   +6 more
wiley   +1 more source

Analogue simulation and analysis of non-circular gear reentry error

open access: yesMATEC Web of Conferences, 2016
The studies on non-circular gear cutting and using errors were generally based on theory of cylindrical gear errors, and the similarities and differences between cylindrical gear and non-circular gear were combined to study the change rule of non ...
Dai Jianqing, Wang Shengze
doaj   +1 more source

PARK(ing) time–How park deficiency affects the biological clock in a Drosophila model of Parkinson's disease

open access: yesFEBS Letters, EarlyView.
Drosophila park mutants serve as a model for Parkinson's disease. We used this strain to investigate the connection between oxidative stress and the circadian clock mechanism. We showed that increased oxidative stress affects the physiology of pacemaker cells, disrupting their daily structural plasticity. Lack of rhythmic signaling from pacemaker cells
Kamila Zientara   +3 more
wiley   +1 more source

Measuring Error of Non circular Gear on Double Flank Contact Tester

open access: yesJixie chuandong, 1997
The error of non circular gear is measured on the double flank contact tester,taking a cylindrical gear as the master gear.This method can not only be used to check the transmission quality of non circular gear in fixed axis,but also is suitable to ...
唐德威   +3 more
doaj  

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