Results 91 to 100 of about 15,884,162 (308)

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

ALGORITHM FOR DIGITAL CONTROL OF THE ANTENNA OF THE GROUND CONTROL POINT OF THE UNMANNED AVIATION COMPLEX

open access: yesПроблеми створення, випробування, застосування та експлуатації складних інформаційних систем, 2019
Every year, unmanned aircraft systems are increasingly used in both the civilian and military spheres. Stable communication with an unmanned aerial vehicle is provided by high-precision pointing of the antenna of the ground control point. In the automatic tracking mode of an unmanned aerial vehicle, the antenna guidance is carried out by the automatic ...
V. V. Vortnikov   +2 more
openaire   +4 more sources

Obstacle-navigation control for a mobile robot suspended on overhead ground wires

open access: yes, 2004
This paper presents an obstacle-navigation control strategy for a mobile robot suspended on overhead ground wires of power transmission lines based on a novel movement mechanism The kinematics of the mobile robot and the process of obstacle-navigation ...
Fang LJ(房立金)   +2 more
core  

Ground-penetrating radar (GPR) point measurements of ice thickness on Rotmoosferner in 2006

open access: yes, 2015
Ground-penetrating radar (GPR) point measurements of ice thickness on Rotmoosferner in ...
Kuhn, Michael   +15 more
core   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

Ground Extraction from 3D Lidar Point Clouds [PDF]

open access: yes, 2018
© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new ...
Pomares, Antonio   +4 more
core  

Ground-penetrating radar (GPR) point measurements of ice thickness on Vorderer Oelgrubenferner in 2010

open access: yes, 2015
Ground-penetrating radar (GPR) point measurements of ice thickness on Vorderer Oelgrubenferner in ...
Kuhn, Michael   +15 more
core   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Ground water pollution potential of Clark County, Ohio

open access: yes, 1995
"March, 1995."; Includes bibliographical references (pages 28-34)A ground water pollution potential map of Clark County has been prepared using the DRASTIC mapping process.
Vormelker, Joel D. (Joel David)
core  

Ground-penetrating radar (GPR) point measurements of ice thickness on Grosser-Riepen-Kees in 1998

open access: yes, 2015
Ground-penetrating radar (GPR) point measurements of ice thickness on Grosser-Riepen-Kees in ...
Kuhn, Michael   +15 more
core   +1 more source

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