Results 61 to 70 of about 6,760,865 (281)

A Generalized Multi-Segment Sliding Wedge Model for Active Earth Pressure Under Narrow Backfill Width

open access: yesBuildings
The classical earth pressure theories, such as Coulomb’s and Rankine’s, are derived based on the assumption that the backfill soil extends infinitely behind a retaining wall.
Linlong Mu   +4 more
doaj   +1 more source

Synergistic perspectives—How single‐molecule biophysics complement biochemical understanding

open access: yesFEBS Letters, EarlyView.
In this review, we discuss how ensemble biochemistry and single‐molecule approaches are complementary, outline commonly used single‐molecule techniques, and illustrate their relevance through two representative case studies: chromatin organization by SMC complexes and pathway choice during DNA double‐strand break repair.
Sara De Bragança   +2 more
wiley   +1 more source

Calculation mode of active earth pressure of lower wall.

open access: yes
Calculation mode of active earth pressure of lower wall.
Xuening Ma (17941131)   +4 more
core   +1 more source

Theoretical study of active earth pressure under seismic-anisotropic seepage coupling field

open access: yesSoils and Foundations
This study investigates the active earth pressure acting on a rigid retaining wall with a vertical back and a horizontal backfill soil surface, considering seismic effect and anisotropic seepage conditions.
Jianan Yao   +3 more
doaj   +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

Numerical study of passive and active earth pressures of sands

open access: yesComputers and Geotechnics, 2012
Abstract The passive and active earth pressures, acting against a vertical retaining wall are often a function of many parameters. In this paper, series of two dimensional finite difference analyses have been carried out with the Fast Lagrangian Analysis of Continua code (FLAC), to estimate the passive and active earth pressure coefficients, for ...
Benmeddour, Djamel   +3 more
openaire   +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

Active earth pressure model tests versus finite element analysis

open access: yesEPJ Web of Conferences, 2017
The purpose of the paper is to compare failure mechanisms observed in small scale model tests on granular sample in active state, and simulated by finite element method (FEM) using Plaxis 2D software. Small scale model tests were performed on rectangular
Pietrzak Magdalena
doaj   +1 more source

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

Active earth pressure calculation method for gravity retaining wall of railway subgrade based on discretized potential sliding surface inclination angle

open access: yesYantu gongcheng xuebao
The cross-section of the backfill behind railway subgrade gravity retaining walls is trapezoidal, and the backfill is subjected to train loads. General formulas of Coulomb earth pressure theory are not applicable for the determination of the location of ...
LI Bin1, , YUAN Jinquan2, ZHANG Lianyu3 , CAO Zijun4, 5, YAO Hongxi6, CHEN Rong3, 5
doaj   +1 more source

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