Results 31 to 40 of about 8,279,944 (240)

Recognition method for stiffened plate structures of ship with round hole shaped armor piercing damage

open access: yesZhongguo Jianchuan Yanjiu, 2020
Objectives Warships will be attacked by missiles or shells when carrying out combat tasks, and armor piercing damage identification has certain characteristics, so it is of great significance to study this specific area.Methods Taking the stiffened plate
WU Hao, LIU Weiqin, HU Yuchen
doaj   +1 more source

Research on Influence of Tank Sloshing on Ship Motion Response under Different Wavelengths

open access: yesApplied Sciences, 2022
The motion of the liquid-carrying ship under waves is simultaneously affected by the external wave moment and the sloshing moment of the internal tank, which makes the motion of the ship more complicated.
Xinsheng Fan, Zhenhong Hu, Xing Zheng
doaj   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

Frequency Response and Material Property Sensitivity Analysis of Moving-Coil Geophone Using Finite Element Simulation

open access: yesSensors
In the process of unconventional oil and gas production, a large number of microseismic signals are generated. These signals are received by geophones deployed on the ground or in wells and used for safety monitoring.
Zesheng Yang   +3 more
doaj   +1 more source

A Neural Network Approach to Estimate the Frequency of a Cantilever Beam with Random Multiple Damages

open access: yesSensors, 2023
Natural frequency is an important parameter in the structural health monitoring (SHM) system. Any changes in this parameter indicate structural alteration due to damage.
Prattasha Saha, Mijia Yang
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Detection, Localisation and Quantification of Structural Damage Using Changes in Modal Characteristics

open access: yesApplied Sciences, 2023
The article defines and explains methods for detecting and locating damage and quantifying its extent on an example of a finite element model of a simple beam.
Marek Páleník   +2 more
doaj   +1 more source

The human gut microbiome across the life course

open access: yesFEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero   +4 more
wiley   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Vibration Analysis of Variable-Thickness Multi-Layered Graphene Sheets

open access: yesApplied Sciences
This study investigates the vibrational characteristics of multi-layered graphene sheets with variable thickness (VTGSs) by using molecular dynamics (MD) simulations.
Yunus Onur Yildiz   +4 more
doaj   +1 more source

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