Results 61 to 70 of about 575,797 (295)

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

A new RS steganalysis algorithm of detecting UnderMP3Cover

open access: yesDianxin kexue, 2018
A new RS steganalysis algorithm to attack UnderMP3Cover was proposed.By analyzing the error caused by the RS algorithm,the choice of resolution function,the initial bias and the fitting method were modified,the flip operator was also selected in the ...
Jian ZHANG, Rangding WANG, Diqun YAN
doaj   +2 more sources

Kinematic reliability and sensitivity analysis of the modified Delta parallel mechanism

open access: yesInternational Journal of Advanced Robotic Systems, 2018
In order to improve the kinematic reliability, it is crucial to find out the influence of each error source on the kinematic reliability of the mechanism.
Dongtao Xu
doaj   +1 more source

Maximum versoria criterion applied to hybrid active noise control algorithm for the impulsive noise

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2023
In the conventional hybrid active noise control (CHANC) algorithm, the filtered-x least mean square (FXLMS) algorithm is used in both feedforward and feedback structures.
Rui Zhang, Yabing Cheng, Shuming Chen
doaj   +1 more source

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

open access: yesMolecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau   +36 more
wiley   +1 more source

Frequency selective and matching circuits having improved linearity characteristics of group delay and methods of their realization

open access: yesВесці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2016
A possibility of increasing the linearity of phase­frequency characteristics in the broadband matching and filtering using a modification of the classical approximation functions is described.
P. V. Boikachov
doaj  

Modified hat functions: Application in space-time-fractional differential equations with Caputo derivative [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization
The present article introduces an operational approach based on modified hat functions to solve the space-time-fractional differential equations in the Caputo sense.
E. Sedighi, O. Baghani, H. Azin
doaj   +1 more source

Complex-valued symmetric radial basis function network for beamforming

open access: yes, 2009
The complex-valued radial basis function (RBF) network proposed by Chen et al. (1994) has found many applications for processing complex-valued signals, in particular, for communication channel equalization and signal detection.
Sheng Chen, Chen, Sheng
core   +1 more source

Engineered extracellular vesicles enriched with the miR‐214/199a cluster enhance the efficacy of chemotherapy in ovarian cancer

open access: yesMolecular Oncology, EarlyView.
Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang   +12 more
wiley   +1 more source

An error analysis of the modified scaling and squaring method

open access: yes, 2007
As a time discretization scheme for an ordinary differential equation with a stiff linear term, there is a class of methods that utilize the exponential or related functions of the coefficient matrix of the linear term.
Koikari, S.
core   +1 more source

Home - About - Disclaimer - Privacy