Results 61 to 70 of about 247,844 (268)

L-filters and L-filter convergence [PDF]

International Journal of Fuzzy Logic and Intelligent Systems, 2009
In this paper, we study the relations between L-fuzzy topologies and L-filters on a strictly two-sided, commutative quantale lattice L. We define an L-fuzzy neighborhood filter and introduce the notion of L-filter convergence in L-fuzzy topological spaces.
Jung Mi Ko, Yong Chan Kim
openaire   +1 more source

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

FEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source

Band-pass filtering of the time sequences of spectral parameters for robust wireless speech recognition [PDF]

, 2006
In this paper we address the problem of automatic speech recognition when wireless speech communication systems are involved. In this context, three main sources of distortion should be considered: acoustic environment, speech coding and transmission ...
Peláez-Moreno, Carmen, Vicente Peña, Jesús de, Gallardo Antolín, Ascensión, J. Vicente-Peña, F. Díaz-de-María, Vicente-Peña, Jesús, Díaz de María, Fernando, Díaz-de-María, Fernando, Peláez Moreno, Carmen, Gallardo-Antolín, Ascensión, C. Peláez-Moreno, A. Gallardo-Antolín   +11 more
core   +1 more source

The Problem of Spurious Emissions in 5G FR2 Phased Arrays, and a Solution Based on an Upmixer With Embedded LO Leakage Cancellation

IEEE Open Journal of the Solid-State Circuits Society
The wireless spectrum is a shared resource. Transmitters are expected to transmit only at their allotted frequency range and not at other frequencies. Transmitters are not perfect, and therefore, there are regulations that limit the transmitted energy ...
Arun Paidimarri, Yujiro Tojo, Caglar Ozdag, Alberto Valdes-Garcia, Bodhisatwa Sadhu   +4 more
doaj   +1 more source

Quasi-Real Scenario of Reconfigurable Filtering Functions Antenna for UWB Communications

Elektronika ir Elektrotechnika, 2018
In this paper, an Ultra Wide Band antenna with reconfigurable filtering-characteristic is proposed to overcome interferences problems in the frequency range 3.1 GHz–10.7 GHz. With dimensions of 35 x 35 mm2, the structure is simple, low–cost and possesses
Hicham Medkour, Ameur Zegadi, Erika Vandelle, Imededdin Djadour, Vuong Tan Phu   +4 more
doaj   +1 more source

Unbiased population heterozygosity estimates from genome‐wide sequence data

Methods in Ecology and Evolution, 2021
Heterozygosity is a metric of genetic variability frequently used to inform the management of threatened taxa. Estimating observed and expected heterozygosities from genome‐wide sequence data has become increasingly common, and these estimates are often ...
Thomas L. Schmidt, Moshe‐Elijah Jasper, Andrew R Weeks, Ary A Hoffmann   +3 more
doaj   +1 more source

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

FEBS 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 full-scale simulator for research of navigation and filtering algorithms of a strapdown inertial navigation system using the Matlab-Simulink environment

Научный вестник МГТУ ГА
Due to the increasing complexity of aircraft navigation equipment and the growing demands placed on them, there is a need to study and improve existing navigation and filtering algorithms by solving problems of developing full-scale research simulators ...
A. A. Sanko, V. A. Vetoshkin, E. L. Ivanovskaya   +2 more
doaj   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

FEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee, Junho Jeong, Chae Yeong Lee, Hyunjoon Cho, Man Hwan Oh, Je Chul Lee, Jee‐Young Lee, Yangmee Kim   +7 more
wiley   +1 more source