Results 21 to 30 of about 9,186,870 (338)

Homologous basic helix–loop–helix transcription factors induce distinct deformations of torsionally-stressed DNA: a potential transcription regulation mechanism

open access: yesQRB Discovery, 2022
Changing torsional restraints on DNA is essential for the regulation of transcription. Torsional stress, introduced by RNA polymerase, can propagate along chromatin facilitating topological transitions and modulating the specific binding of transcription
Johanna Hörberg   +2 more
doaj   +1 more source

Impact of Aggregated PV on Subsynchronous Torsional Interaction [PDF]

open access: yes2020 47th IEEE Photovoltaic Specialists Conference (PVSC), 2020
This paper investigates induced oscillation (specifically subsynchronous torsional interactions) in power systems arising from photovoltaic (PV) power modulation. Time domain simulations of a modified IEEE first-benchmark system are presented and analyzed.
Rasel Mahmud, Andy Hoke, Jonathan White
openaire   +1 more source

Impact of load dynamics on torsional interactions [PDF]

open access: yes2016 Power Systems Computation Conference (PSCC), 2016
This paper evaluates the impact of load dynamics on torsional interactions by considering a mix of static and dynamic loads aggregated at the bulk transmission level. This is essential to investigate the importance of detailed load modelling for subsynchronous resonance (SSR) studies to accurately assess damping contribution and capture system dynamics.
Dattaray, P   +5 more
openaire   +2 more sources

Study on Rock-Breaking Mechanisms of Multi-Dimensional Impact Cutting Based on PDC Cutter Numerical Simulation

open access: yesShiyou jixie, 2023
The development and application of the torsional impact drilling model improve the efficiency of breaking rocks along the wellbore circumference.To enhance the rock-breaking efficiency of the compound impact drilling and the optimal torsional-axial ...
Qi Yue   +5 more
doaj  

Mitigation of Torsional Vibrations in a Modular Drivetrain with Interleaving Control

open access: yesMachines, 2022
In order to meet requirements in machine design, modularity is often brought forward as a way to cope with load variations and adaptability of the architecture.
David van Os   +4 more
doaj   +1 more source

Effectiveness of flange plates on torsional behaviors of ultra-high-performance fiber-reinforced concrete hollow beams

open access: yesDevelopments in the Built Environment, 2023
This study investigates the effectiveness of flanges with various types of stirrup and cross-sectional dimensions on the torsional behaviors of ultra-high-performance fiber-reinforced concrete (UHPFRC) hollow beams.
Jiale Zhou   +4 more
doaj   +1 more source

Experimental Characterization of the Torsional Damping in CFRP Disks by Impact Hammer Modal Testing

open access: yesPolymers, 2020
Composite materials are widely used for their peculiar combination of excellent structural, mechanical, and damping properties. This work presents an experimental study on the dissipation properties of disk-shaped composite specimens exploiting vibration
F. Cosco   +4 more
semanticscholar   +1 more source

Effect of drop weight impact on the torsional-loading behavior of filament wound and prepreg-wrapped composite tubes

open access: yesPolymers and Polymer Composites, 2020
This article presents an experimental study on the torsional behavior of composite tubes subjected to impact loadings. Four types of composite tubes with the winding angle of 30°, 45°, 60°, and 75° ([±30]FW, [±45]FW, [±60]FW, and [±75]FW) were produced ...
I. F. Soykok   +3 more
semanticscholar   +1 more source

Simulation on compound percussive drilling: Estimation based on multidimensional impact cutting with a single cutter

open access: yesEnergy Reports, 2021
In the present study, a 3D FEM of compound percussive system considering a loading–unloading cycle was employed to simulate the dynamic single-cutter-rock interaction.
Yumei Li   +4 more
doaj   +1 more source

Study on the torsional movement of a reed valve in a rotary compressor

open access: yesAdvances in Mechanical Engineering, 2018
Torsional movement makes the motion of a reed valve very complex and unmanageable in a rotary compressor. However, there is little information on the torsional movement of the reed valve in comparison to the valve displacement and velocity in the ...
Xiaoling Yu   +5 more
doaj   +1 more source

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