Results 101 to 110 of about 7,834,536 (290)

Efficient distribution of tuned mass dampers for seismic control in regular and irregular multi-story steel buildings

open access: yesScientific Reports
Passive control systems, such as tuned mass dampers (TMDs), are widely used to reduce the lateral response of multi-story buildings (MSBs) without external power.
Mohamed M. Shabib   +3 more
doaj   +1 more source

The Mass‐to‐Light Ratio of Binary Galaxies [PDF]

open access: yesThe Astrophysical Journal, 1999
18 pages + 8 figures, to appear in ApJ Vol. 516 (May 10)
openaire   +2 more sources

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

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

Frozen up dilaton and the GUT/Planck mass ratio

open access: yesPhysics Letters B, 2017
By treating modulus and phase on equal footing, as prescribed by Dirac, local scale invariance can consistently accompany any Brans–Dicke ω-theory. We show that in the presence of a soft scale symmetry breaking term, the classical solution, if it exists,
Aharon Davidson, Tomer Ygael
doaj   +1 more source

Liquid chromatography-tandem mass spectrometry - Application in the clinical laboratory [PDF]

open access: yes, 2003
This review provides a concise survey of liquid chromatography tandem mass spectrometry (LCTMS) as an emerging technology in clinical chemistry. The combination of two mass spectrometers with an interposed collision cell characterizes LCTMS as an ...
Michael Vogeser, Vogeser, Michael
core   +2 more sources

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

open access: yesFEBS 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   +6 more
wiley   +1 more source

Optimizing Seismic Performance of Tuned Mass Dampers at Various Levels in Reinforced Concrete Buildings

open access: yesBuildings
This study aimed to rigorously evaluate the impact of tuned mass dampers (TMDs) on structural response under seismic excitation. By strategically placing TMDs at various levels within the structures, the research sought to determine their effectiveness ...
Hosein Naderpour   +4 more
doaj   +1 more source

Stress-Insensitive Resonant Graphene Mass Sensing via Frequency Ratio

open access: yesSensors, 2019
Herein, a peripherally clamped stretched square monolayer graphene sheet with a side length of 10 nm was demonstrated as a resonator for atomic-scale mass sensing via molecular dynamics (MD) simulation.
Xing Xiao   +3 more
doaj   +1 more source

mass distribution ratio

open access: yes, 2019
Citation: 'mass distribution ratio' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.M03717 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

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