Results 81 to 90 of about 2,979,826 (304)

Structure of a translocation signal domain mediating conjugative transfer by Type IV secretion systems [PDF]

, 2013
Relaxases are proteins responsible for the transfer of plasmid and chromosomal DNA from one bacterium to another during conjugation. They covalently react with a specific phosphodiester bond within DNA origin of transfer sequences, forming a nucleo ...
Redzej, Adam, Topf, Maya, Zechner, E.L., Lang, S., Waksman, Gabriel, Zangger, K., Gruber, C.J., Ilangovan, Aravindan   +7 more
core   +1 more source

Electromagnetic Field Analysis of Signal Transmission Path and Electrode Contact Conditions in Human Body Communication

Applied Sciences, 2018
Human body communication (HBC) is a wireless communication method that uses the human body as part of the transmission medium. Electrodes are used instead of antennas, and the signal is transmitted by the electric current through the human body and by ...
Kentaro Yamamoto, Yoshifumi Nishida, Ken Sasaki, Dairoku Muramatsu, Fukuro Koshiji   +4 more
doaj   +1 more source

Using subsite coupling to predict signal peptides [PDF]

Protein Engineering, Design and Selection, 2001
Given a nascent protein sequence, how can one predict its signal peptide or "Zipcode" sequence? This is a first important problem for scientists to use signal peptides as a vehicle to find new drugs or to reprogram cells for gene therapy. Based on a model that takes into account the coupling effect among some key subsites, the so-called [-3, -1, +1 ...
openaire   +2 more sources

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Le lissage H∞ : une alternative au filtrage de Kalman pour le rehaussement du signal de parole ?

, 2005
- La mise en oeuvre d'un filtre de Kalman repose sur des hypothèses fortes sur le processus générateur et le bruit d'observation du système. En effet, ils doivent être tous les deux blancs et gaussiens et leurs variances connues a priori.
GRIVEL, E., LABARRE, D., NAJIM, M., CHRISTOV, N.   +3 more
core  

Estimation robuste de l'enveloppe spectrale d'un signal harmonique bruité [PDF]

, 1997
Les modèles sinusoïdaux de parole nécessitent l'estimation d'une enveloppe spectrale reliant les différents harmoniques. Une nouvelle méthode est développée ici ; elle repose sur un critère de vraisemblance pénalisée obtenu à partir du comportement ...
OUDOT, M., CAPPE, O., MOULINES, E.
core  

History of 3141st Signal Service Group.

, 2023
Details projects handled by the Outside Plant Engineering Section, activities in the Group Wire Section, what circuits were in full operation, historical records for the months of January and February 1945, the Crimea Conference, the 3140th Signal ...
Office of the Chief Signal Officer; Allied Force Headquarters, Signal Center; Headquarters, Mediterranean Theater of Operations, Office of the Chief Signal Officer; Back, George I.
core  

G-Protein-Coupled Receptors Signal Victory [PDF]

Cell, 2012
The 2012 Nobel Prize in Chemistry has been awarded to Brian K. Kobilka and Robert J. Lefkowitz for their studies of G-protein-coupled receptors. Their pioneering work over the past 40 years has provided detailed molecular insight into the structure and function of this fundamentally important family of receptors.
openaire   +2 more sources

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

FEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui, Agnes Banreti, Armelle L. Ernst, Guillaume Leseigneur, Uwe J. Meierhenrich   +4 more
wiley   +1 more source

Algorithme génétique pour le rehaussement d'un signal de parole voisé fondé sur un modèle sinusoïdal

, 2003
Parallèlement aux approches par atténuation spectrale à court terme, de nombreuses méthodes paramétriques ont été mises en oeuvre pour rehausser le signal de parole, capté par un unique microphone.
GRIVEL, E., VESIN, J. M., NAJIM, M.
core