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481
Structural insight into host recognition by aggregative adherence fimbriae of enteroaggregative Escherichia coli.
Published 2014-09-01“…Using X-ray crystallography and NMR structures, we present new atomic resolution insight into the structure of AAF variant I from the strain that caused the deadly outbreak in Germany in 2011, and AAF variant II from archetype strain 042, and propose a mechanism for AAF-mediated adhesion and biofilm formation. …”
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482
Multi-channel learning for integrating structural hierarchies into context-dependent molecular representation
Published 2025-01-01“…Yet, existing molecular SSL methods largely overlook chemical knowledge, including molecular structure similarity, scaffold composition, and the context-dependent aspects of molecular properties when operating over the chemical space. …”
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483
Metal additive manufacturing of damage-controlled elements for structural protection of steel members
Published 2024-11-01“…This paper develops hybrid steel members by integrating additively manufactured, ultra-lightweight, damage-controlled elements (DCEs) into hot-rolled structural steel members. This approach relies on segmenting a structural member into distinct sections; one or two segments are enlarged to be capacity protected; however, another end or middle DCE segment is optimized to emulate the conventional member’s strength and stiffness. …”
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484
Analysis of Structural Response of Subway Shield Tunnel Lining under the Influence of Cavities
Published 2021-01-01“…The existence of cavities behind the shield tunnel lining can cause cracking, broken pieces, water leakage, and other problems, which reduces the durability and safety of the shield tunnel segment structure. In order to clarify the mechanism of cavity damage, a more systematic study of the effects of cavities on the shield tunnel lining structure from the angle, depth, and the number of cavities is carried out using model tests and numerical simulations without considering the effects of the stiffness reduction effect at the tunnel segment joints and groundwater seepage in this paper. …”
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485
Left ventricular functional, structural and energetic effects of normal aging: Comparison with hypertension.
Published 2017-01-01“…<h4>Methods</h4>Cross-sectional study of magnetic resonance imaging and 31P spectroscopy-based measurements of left ventricular structure, global function, strains, pulse wave velocity, high energy phosphate metabolism in 48 normal subjects and 40 treated hypertensive patients (though no other cardiovascular disease or diabetes) stratified into 3 age deciles from 50-79 years.…”
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486
A flexible way to study composites in ecology using structural equation modeling
Published 2025-02-01“…In practice, however, researchers relying on the common approaches to study composites encounter limitations in flexibly specifying composites with structural equation modeling (SEM). To enrich the researchers’ statistical toolbox and to flexibly model composites in structural equation models, we introduce the Henseler–Ogasawara (H–O) specification to the field of ecology. …”
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487
Structural and environmental impacts of concrete quality a comparative life cycle assessment
Published 2025-05-01“…The lateral bearing capacity of the two buildings was calculated using non-linear static pushover analysis. ISO standards and SimaPro9.1.1.7 software were used to assess the potential damage, environmental pollution produced, and construction energy used by the two concrete structures. …”
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488
Structural, thermal, and radiation shielding properties of antimony-doped zinc borate glasses
Published 2025-05-01“…Abstract Antimony zinc borate glasses with compositions (45–m)ZnO–(55–n)B2O3–(m + n)Sb2O3 (0 ≤ m, n ≤ 15 mol%) were synthesized via the melt-quenching technique to investigate the impact of Sb2O3 substitution on structural, thermal, and radiation shielding properties. …”
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489
Dynamic evolution characteristics of meso-structural mechanics performance of coal measure mudstone
Published 2025-02-01“…Before yielding, the CT number Me increases slowly, but after yielding, Me shows a linear and rapid growth trend. The change of Me values also clearly reflects the yield behavior and structural damage evolution law of mudstone loaded with different water contents. …”
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490
Assessing the effectiveness of mangrove rehabilitation using above-ground biomass and structural diversity
Published 2025-03-01“…A common allometric model and linear regression analysis were used to evaluate the influence of species diversity, structural complexity, and tree density on AGB. …”
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491
Association between retinal structural changes and disease severity in patients with Parkinson’s disease
Published 2025-07-01“…[Objective] This study aimed to investigate retinal structural changes in patients with Parkinson’s disease (PD) and their correlation with disease severity using optical coherence tomography (OCT). …”
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492
Key Nodes Identification Method in Scale-Free Network Based on Structural Holes
Published 2025-01-01“…It introduces two innovations: Dynamic multi-hop bridge detection, extending beyond the 2-hop limitation of E-Burt to quantify long-range bridging influence efficiently; and a weighted fusion model balancing coreness (via MDD) and bridging roles (via structural holes) with linear time complexity.Experiments on synthetic (Barabási-Albert), social (dolphin), infrastructure(Western U.S. power grid), and collaboration (co-authorship) networks demonstrate superiority. …”
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493
Self-sensing cement composites for structural monitoring: Behaviour under cyclic loading
Published 2025-01-01“…As a result, SSCC can be calibrated for use as sensors in concrete structures. However, due to their brittle nature, it remains unclear whether the electrical properties of SSCC remain constant after repeated mechanical loading. …”
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494
Utility of UAS-LIDAR for estimating forest structural attributes of the Miombo woodlands in Zambia.
Published 2025-01-01“…The ability to collect precise three-dimensional (3D) forest structural information at a fraction of the cost of airborne light detection and ranging (lidar) makes uncrewed aerial systems-lidar (UAS-lidar) a remote sensing tool with high potential for estimating forest structural attributes for enhanced forest management. …”
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495
High Resolution Mass Spectrometry Fragmentation Rules of Etomidate and Its Structural Analogues
Published 2024-12-01“…ObjectiveTo explore the characteristic fragment ions, ion abundance ratios and mass spectrometry fragmentation rules of etomidate and its structural analogues by using gas chromatography-quadrupole/orbitrap mass spectrometry (GC-Q/Orbitrap MS) and liquid chromatography-linear ion trap quadrupole-orbitrap mass spectrometry (LC-LTQ-Orbitrap MS) techniques, providing important data support for the identification and prediction of etomidate structural analogues.MethodsGC-Q/Orbitrap MS and LC-LTQ-Orbitrap MS were used to analyze metomidate, etomidate, isopropoxate and propoxate, to obtain their GC high resolution mass spectra and LC high resolution mass spectra.ResultsUnder the electron impact (EI) ion source mode, etomidate, metomidate and the other two analogues all produced their molecular ions and seven identical fragment ions (m/z 77.038 6, 79.054 2, 95.024 0, 105.069 9, 143.073 0, 172.099 5 and 199.086 6), among which isopropoxate and propoxate also produced characteristic fragment ions m/z 216.089 3. …”
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496
Structural Geomorphology and Tectonic Dynamism of the Lolodorf Segment, Nyong Complex, SW Cameroon
Published 2025-06-01“… The study of the structural geomorphology and tectonic dynamism of the Lokoundjé and Nyong watersheds has made possible to discriminate the essential geological objects of the Lolodorf region (3°10’- 3°25’N, 10°40’- 10°55’E), in Southern Cameroon. …”
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497
Localizing Age-Related Changes in Brain Structure Using Voxel-Based Morphometry
Published 2017-01-01“…We report the dynamic anatomical sequence of human cortical gray matter development from late childhood to young adults using VBM and ROI-based methods. Method. The structural MRI of 91 normal individuals ranging in age from 6 to 26 years was obtained and the GMV for each region was measured. …”
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498
Determinants of the Financing Structure of the Acquiring Companies in the Pre-Merger Period. Results of the Research
Published 2020-01-01“…The article's main objective is to identify the factors influencing the financing structure and capital changes in the pre-merger periods in the acquiring companies. …”
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499
A Direct Correlation between Viscosity and Liquid Structure in Cu-Sn Alloys
Published 2017-01-01“…Among the four Cu-Sn alloys, Cu80Sn20 and Cu70Sn30 alloys have higher activation energy for viscous flow (Ea,V), activation energy for structural evolution (Ea,D), and the slope (γ) of the linear relationship of D/η with temperature due to the Cu3Sn clusters formation.…”
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500
INFLUENCE HOT PLASTIC DEFORMATION ON THE STRUCTURE AND PROPERTIES OF CARBON STEEL OF THE RAILWAY WHEEL
Published 2023-12-01Get full text
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