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Impact on the microstructure of deep gray matter in unvaccinated patients after moderate-to-severe COVID-19: insights from MRI T1 mapping
Published 2025-07-01“…Conclusion T1 mapping revealed microstructural changes in striatal and hippocampal regions of unvaccinated individuals aged ≥ 40 who recovered from moderate-to-severe COVID-19 during the pre-Omicron era. …”
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423
Electrochemical Behavior of the Ti-12Mo-25Nb Alloy Compared to the Alloys of the Ti-xMo-30Nb System (x = 10 and 12%wt.) in Ringer’s Solution
Published 2025-07-01“…The alloys were produced by arc melting with a non-consumable tungsten electrode in an argon atmosphere, followed by homogenization at 950°C for 1 hour and water quenching. The microstructure was analyzed using X-ray diffraction and optical microscopy, while mechanical properties were evaluated by Vickers microhardness and Young’s modulus via the impulse excitation technique. …”
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424
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Effect of pulsed current frequency on alloy chemistry, microstructure, and mechanical responses of Hastelloy B-2 superalloy in gas tungsten arc welding process
Published 2025-05-01“…At the same time, detailed microstructural analysis, chemical composition evaluation, and scanning electron microscopy (SEM) of fracture surfaces were performed to uncover the underlying mechanisms. …”
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426
Microstructure quantitative analysis of multi-scale pores in C/SiC composites via micro-CT for revealing correlations with interlaminar shear properties
Published 2025-07-01“…The conventional indicator porosity cannot characterize detailed pore structure characteristics. To accurately evaluate effects of multi-scale pores on composites or components properties, a modified fractal dimension analysis strategy is proposed to quantify the microstructure characteristic parameters of pores such as porosity, pore size and distribution, etc, using micro-computed tomography images (Micro-CT) images. …”
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427
Engineering characteristics of high-weight aged BOFs-dredged soil backfill for port structure: Shear properties, unit weight, strength, and microstructure characteristics
Published 2025-12-01“…The study utilized aged, aggregate type BOFs and a small amount of cement as the primary binder, along with marine dredged clay soil as the main matrix, to evaluate the frictional properties, unit weight, microstructure, and unconfined compressive strength (UCS) behavior. …”
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428
Characterization and Failure Analysis of Solder Joints in Ball Grid Array (BGA) Components Using Cross-Section, Dye and Pry, and Microstructural Etching Techniques
Published 2025-06-01“…Cross-section confirmed cracks in the IMC layer and macrovoids at the solder-PCB interface, including shrinkage voids associated with solidification, as per IPC-7095E standards. The microstructure of the SAC305 alloy exhibited silver and copper precipitates within a dendritic tin matrix. …”
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429
Microstructure and phase stability of C-doped AlCoCrFeNi2.1 eutectic high-entropy alloys at 600 °C
Published 2025-04-01“…However, the phase stability of the alloy remains uncertain. This study evaluated the microstructure and phase stability of both the as-cast AlCoCrFeNi2.1 EHEA and its C-doped counterpart, (AlCoCrFeNi2.1)97C3, at 600 °C. …”
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430
Effect of Printing Orientation Angle and Heat Treatment on the Mechanical Properties and Microstructure of Binder-Jetting-Printed Parts in 17-4 PH Stainless Steel
Published 2024-10-01“…Scanning electron microscopy with energy dispersive X-ray spectroscopy was used to observe the fracture surfaces and microscopical defects on the binder jetting printed parts to evaluate the fracture mechanisms. It was demonstrated that printing orientation angles do not affect the mechanical properties of 3D-printed parts, while a significant improvement in the microstructure and mechanical properties is observed after the H900 heat treatment.…”
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431
Microstructural, Electrochemical, Mechanical, and Biocompatibility Characterization of ReN Thin Films Synthesized by DC Sputtering on Ti6Al4V Substrates
Published 2025-03-01“…Thin films of ReN were synthesized by DC sputtering at different nitrogen pressures (120, 140, 160, and 180 mTorr) on silicon and Ti6Al4V substrates. The coatings were evaluated for their microstructural and mechanical properties. …”
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432
Residual stress release and corresponding microstructural changes in high-energy impact-modified GH4169 after aging at 425 °C and 650 °C
Published 2024-11-01“…By elucidating the link between stress relaxation and microstructural changes, this research offers a theoretical foundation for optimizing surface-strengthening processes and setting optimal operational temperatures for advanced structural materials.…”
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433
Effect of Milling Time on the Microstructure and Mechanical Properties of HfB2-ZrB2-TiB2 Sintered via SPS
Published 2024-12-01“…X-ray diffraction was employed for phase identification. Microstructural studies were performed using a scanning electron microscope. …”
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434
On the Optimization of T6 Heat Treatment Parameters of a Secondary Al-Si-Cu-Mg Foundry Aluminum Alloy: A Microstructural and Mechanical Characterization
Published 2025-06-01“…Microstructural analysis by light microscopy (LM) and scanning electron microscopy (SEM), together with Brinell hardness testing, was also carried out to assess the effects of heat treatment parameters. …”
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435
The effects of hatch spacing and stripe offset on the surface morphology and microstructure of biomedical 316 L stainless steel formed by laser powder bed fusion
Published 2025-05-01“…Surface roughness, three-dimensional morphology, and microstructural evolution were quantitatively characterized using a digital microscope with extended depth of field and scanning electron microscopy, whereas the surface mechanical properties were evaluated through Vickers hardness testing. …”
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436
Cellular Automaton Simulation Model for Predicting the Microstructure Evolution of an Additively Manufactured X30Mn21 Austenitic Advanced High-Strength Steel
Published 2025-07-01“…Simulations were also conducted at varying resolutions of CA cells, enabling a comprehensive study of their impact on microstructure evolution. Furthermore, the computational efficiency was critically evaluated.…”
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437
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Enhancing mechanical and microstructural properties of lateritic soil using bottom ash and cement stabilization: a comparative analysis of destructive and nondestructive testing me...
Published 2025-12-01“…Microstructural analyses revealed dense calcium silicate hydrate (CSH) gels that filled voids and enhanced interparticle bonding. …”
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439
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Controlling the formation of microstructure at the melt-pool boundaries during directed energy deposition of aluminum alloy with a modified continuous growth restriction factor
Published 2025-01-01“…Understanding the formation of solidified microstructures adjacent to the fusion boundary of a melt pool can provide valuable insights for optimizing process parameters and achieving the desired microstructure in directed energy deposition (DED). …”
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