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4441
Preparation Process, Structure, and Modification of Alkali Metal Niobate Lead-Free Piezoelectric Ceramics
Published 2025-06-01“…Pb-based piezoelectric ceramics cause serious Pb pollution during manufacturing, Pb-free niobate-based piezoelectric ceramics have strong ferroelectricity and high Curie temperatures, rendering them more suitable for making ceramics. For this reason, this article studies the preparation process, structure, and modification of alkali metal niobate Pb-free piezoelectric ceramics by the solid-state method to improve the environmental protection of the prepared materials and the performance of piezoelectric ceramics. …”
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4442
Key Transmission Section Search Strategy Based on Improved Clustering Algorithm
Published 2022-06-01“…The results show that the key transmission sections obtained by this method are more practical and valuable in engineering.…”
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4443
Coptis Root-Derived Hierarchical Carbon-Supported Ag Nanoparticles for Efficient and Recyclable Alkyne Halogenation
Published 2025-01-01“…Its stability and recyclability are markedly enhanced; it retains 95% of its mass and remains unaltered in the reaction solvent for over 160 h after five cycles. This method simplifies the synthesis of terminal alkynes and their derivatives, rendering the process more environmentally benign and efficacious. …”
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4444
A retrospective assessment of COVID-19 vulnerability index indicators and mortality rates pre-COVID-19 (2018–2020) and during COVID-19 (2020–2022) in a health and demographic surve...
Published 2025-06-01“…All cause-mortality across all tertiles more than doubled during the COVID-19 period compared to pre-COVID-19 (15.5 against 7.2). …”
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4445
BDNF Val66Met polymorphism moderates associations between physical activity and neurocognitive outcomes in older adults
Published 2025-04-01“…The neuroprotective benefits of PA may be more pronounced in BDNF Val/Val carriers. There may be a sex‐specific PA pathway for neuroinflammation in Val/Val males.…”
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4446
Preparation and Electrochemical Performance Analysis of Flexible Ionic Polymers by Freeze-Drying Technology
Published 2022-01-01“…Moreover, we also use the method of cyclic voltammetry, ac impedance, and the constant current charge and discharge method to analyze and evaluate the multiwalled carbon nanotube (MWCNT)-reinforced IPMC produced by freeze-drying technology. …”
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4447
A novel motion key frame extraction and video stream classification based on reinforcement learning and feature fusion
Published 2024-11-01“…Some fusion features are more effective than the original statistical features. …”
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4448
Adaptive Robust Dynamic Surface Integral Sliding Mode Control for Quadrotor UAVs under Parametric Uncertainties and External Disturbances
Published 2020-01-01“…A robust adaptive fuzzy nonlinear controller based on dynamic surface and integral sliding mode control strategy (ADSISMC) is proposed to realize trajectory tracking for a class of quadrotor UAVs. In this study, the composite factors including parametric uncertainties and external disturbances are added to controller design, which make it more realistic. …”
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4449
Robust quantitative assessment of collagen fibers with picrosirius red stain and linearly polarized light as demonstrated on atherosclerotic plaque samples.
Published 2021-01-01“…The objective of the present study is to demonstrate a novel image acquisition technique and analysis method using linearly polarized light. The proposed imaging technique is based on image acquisition at multiple slide rotation angles, which are co-registered to form a composite image used for quantitative analysis by pixel intensity or pixel counting. …”
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4450
Development of Full-Scale Ultrathin Shell Reflector
Published 2012-01-01“…It is aimed that a new ultrathin shell composite reflector is developed considering different design options to optimize the stiffness/mass ratio, cost, and manufacturing. …”
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4451
Pyrolysis of Puspa Wood Sawdust and Sugarcane Bagasse into Biochar
Published 2022-04-01“…It can be concluded that the sugarcane bagasse biochar was more likely favorable than puspa wood sawdust biochar due to its higher fixed carbon and nutrient content…”
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4452
Provision and Accessibility of Services of General Interest in Functional Urban Regions: The Case of Zagreb, Croatia
Published 2025-05-01“…This study adopts a multi-service rather than a single-service research approach, providing a more comprehensive understanding of the phenomenon. …”
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4453
Resilient Membranized Coacervates Formed through Spontaneous Wrapping of Heat‐Destabilized Lipid Bilayers around Coacervate Droplets
Published 2025-05-01“…Here, we present a new method to create membranized coacervates (MCs) for coacervates with any surface charge and a wide range of phospholipid membrane compositions. …”
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4454
Preparation and Properties of Polymer/Vermiculite Hybrid Superabsorbent Reinforced by Fiber for Enhanced Oil Recovery
Published 2014-01-01“…A series of polymer/clay hybrid superabsorbent composites (SACFs) comprising acrylamide, acrylic acid, sodium 2-acrylamido-tetradecyl sulfonate, fiber, and vermiculite by in situ intercalation and exfoliated method was successfully synthesized. …”
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4455
Remote sensing image semantic segmentation network based on multi-scale feature enhancement fusion
Published 2024-01-01“…Semantic segmentation is a crucial method for recognizing and classifying objects in high-resolution remote sensing images (HRRSIs). …”
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4456
Adhesive contact between two-dimensional anisotropic elastic bodies
Published 2023-12-01“…Since the composite materials are generally anisotropic and contact bodies are all deformable, it is more practical to consider the adhesive contact of two anisotropic elastic materials. …”
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4457
Optimization of PES-based Hollow fiber membranes incorporating MgO-modified activated carbon via response surface methodology for enhanced pure water permeability
Published 2025-08-01“…Abstract This research aims to optimize the fabrication of polyethersulfone (PES)-based composite hollow fiber membranes via phase inversion. …”
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4458
Low-Power Vibrothermography for Detecting Barely Visible Impact Damage in CFRP Laminates: A Comparative Imaging Study
Published 2025-07-01“…These findings demonstrate that LVT, when combined with PCA or RPCA, offers a reliable method for identifying BVID and can support safer, more efficient structural health monitoring of composite materials.…”
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4459
Studies on the effectiveness of artificial pollination and pollen xenia in macadamia nut Guire No.1
Published 2025-01-01“…Muell) independently selected and bred in Guangxi, Guire No.1 is the macadamia variety with the largest cultivation area in Guangxi at present, accounting for about more than 65% of the total planting area. It was a self-incompatible variety. …”
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4460
CLINICAL EVALUATION OF RESTORATIONS OF ENDODONTICALLY TREATED TEETH
Published 2020-06-01“… For endodontically treated lateral teeth, direct restoration made of photocomposites is most often used, and indirect ceramic restoration appears to be more promising, for which, however, additional retention is required. …”
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