Results 31 to 40 of about 4,534,827 (376)
TFE and Spt4/5 open and close the RNA polymerase clamp during the transcription cycle [PDF]
, 2016 Transcription is an intrinsically dynamic process and requires the coordinated interplay of RNA polymerases (RNAPs) with nucleic acids and transcription factors.
Gietl, Andreas +5 more
core +1 more source
High-Efficiency Design and Control of Zeta Inverter for Single-Phase Grid-Connected Applications
Energies, 2019 The conventional zeta inverter has been used for single-phase grid-connected applications. However, it has high switching losses to operate at high switching frequency in the continuous conduction mode (CCM). To address this drawback, this paper suggests
Woo-Young Choi, Min-Kwon Yang
doaj +1 more source
Pipeline Vibration Control Using Magnetorheological Damping Clamps under Fuzzy–PID Control Algorithm
Micromachines, 2022 Aiming at the problem of low-frequency vibration of the hydraulic pipeline, a new type of semi-active damping magnetorheological (MR) damping clamp structure is designed. The structure size and material of the MR damping clamp were determined.
Fei Gong +5 more
doaj +1 more source
Structural visualization of key steps in human transcription initiation. [PDF]
, 2013 Eukaryotic transcription initiation requires the assembly of general transcription factors into a pre-initiation complex that ensures the accurate loading of RNA polymerase II (Pol II) at the transcription start site. The molecular mechanism and function
Fang, Jie +3 more
core +1 more source
A New Asymmetrical Current-fed Converter with Voltage Lifting
Advances in Electrical and Computer Engineering, 2011 This paper presents a new zero voltage switching current-fed DC-DC converter with high voltage gain. In this converter all switches (main and auxiliary) turn on under zero voltage switching and turn off under almost zero voltage switching due to snubber
DELSHAD, M.
doaj +1 more source
Active Queue Management for Fair Resource Allocation in Wireless Networks [PDF]
, 2008 This paper investigates the interaction between end-to-end flow control and MAC-layer scheduling on wireless links. We consider a wireless network with multiple users receiving information from a common access point; each user suffers fading, and a ...
Andrew, Lachlan L. H. +2 more
core +2 more sources
IET Power Electronics, 2021 This paper presents a new method for driving the magnetron for a sulfur plasma tube using the two‐switch forward converter structure with a phase‐shifting active clamp (1000±40 W, 285 mA, 4 kV).
Abolfazl Nasiri, Mohamad Reza Banaei
doaj +1 more source
Structure of an archaeal PCNA1-PCNA2-FEN1 complex: elucidating PCNA subunit and client enzyme specificity. [PDF]
, 2006 The archaeal/eukaryotic proliferating cell nuclear antigen (PCNA) toroidal clamp interacts with a host of DNA modifying enzymes, providing a stable anchorage and enhancing their respective processivities.
Andrew S. Doré +48 more
core +4 more sources
Energies, 2022 Different mechanisms for balancing power between parallel connected modules have been presented in recent years. They have been broadly classified into active and passive methods.
Jacinto M. Jiménez-Martínez +2 more
doaj +1 more source
Signal transduction: Clamping down on Src activity [PDF]
Current Biology, 1997 Recent high-resolution structures of members of the Src family of protein-tyrosine kinases illustrate how a series of cooperative intramolecular interactions represses the catalytic activity of these kinases, but allows for their rapid activation by a variety of regulatory inputs.
openaire +2 more sources