Results 61 to 70 of about 519,341 (276)

Stage‐Specific Patterns of Imaging and Non‐Motor Biomarkers in Spinocerebellar Ataxia Type 3

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Advancements in disease‐modifying therapies for spinocerebellar ataxia Type 3 (SCA3) underscore the need for robust biomarkers to monitor disease progression and evaluate treatment efficacy. Although motor phenotypes have been well characterized, less is known about non‐motor and imaging‐based features across different disease stages.
Chun Li, Zhi‐Xian Ye, Xuan‐Yu Chen, Liang‐Liang Qiu, Zhi‐li Chen, Yu‐Sen Qiu, Wei Lin, Ru‐Ying Yuan, Xin‐Tong Yu, Chun‐Yu Huang, Xin‐Yuan Chen, Min‐Ting Lin, Jian‐Ping Hu, Wan‐Jin Chen, Ning Wang, Shao‐Bo Yao, Shi‐Rui Gan, Ying Fu   +17 more
wiley   +1 more source

Classification, identification and monitoring methods for static-dynamic stress hazard sources of rock burst in coal mine

Meitan kexue jishu
The prevention and control of rock burst in coal mines should begin from the source, where classification identification and monitoring of static-dynamic stress hazard sources are essential prerequisites for rock burst source control. Based on the theory
Linming DOU, Zhenyu SUN, Anye CAO, Zonglong MU, Siyuan GONG, Wu CAI, Zhifeng MA, Jiazhuo LI, Kunyou ZHOU   +8 more
doaj   +1 more source

Inversion of Initial In-situ Stress Field of Underground Caverns of Hydropower Station Based on GD-PSO [PDF]

Zhengzhou Daxue xuebao. Gongxue ban
In view of the difficulty of balancing convergence speed and nonlinear regression accuracy of existing inversion methods, a new method combining gradient descent (GD) and particle swarm optimization (PSO) for inversion analysis of initial in-situ ...
BAO Tengfei, CHENG Jianyue, XING Yu, ZHOU Xiwu, CHEN Yuting, ZHAO Xiangyu   +5 more
doaj   +1 more source

Discrepancies Between Micro Versus Macroscale Viscoelastic Properties in a Microplastic‐Tissue Composite Model

Advanced Engineering Materials, EarlyView.
This study explores the discrepancies between bulk mechanics and spatial mapping in a tissue‐mimetic hydrogel model. Microplastic particles create localized stiff mechanical microenvironments that are detectable by cellular‐scale nanoindentation but leave bulk properties unchanged as measured by rheology.
Ahron T. Verschleisser, Baptiste Le Roi, Omri Leshem, Joshua M. Grolman   +3 more
wiley   +1 more source

Controlling Grain Growth in Powder Bed Fusion of Yttria‐Stabilized Zirconia Using Femtosecond Lasers: Challenges and Methodological Insights

Advanced Engineering Materials, EarlyView.
Binder‐free laser powder bed fusion of 8YSZ with a femtosecond laser is used to map process windows linking scan strategy, heat accumulation, and grain growth. Time‐resolved thermography and simulations reveal thermal regimes that enable continuous, vitrified, and fine‐grained 8YSZ surface layers without absorptive additives and demonstrate ...
Markus Kühn, Sarah Kaden, Andrea Barz, Daniel Störzner, Jens Bliedtner, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

In situ stress inversion using nonlinear stress boundaries achieved by the bubbling method

Journal of Rock Mechanics and Geotechnical Engineering
Due to the heterogeneity of rock masses and the variability of in situ stress, the traditional linear inversion method is insufficiently accurate to achieve high accuracy of the in situ stress field. To address this challenge, nonlinear stress boundaries
Xige Liu, Chenchun Huang, Wancheng Zhu, Joung Oh, Chengguo Zhang, Guangyao Si   +5 more
doaj   +1 more source

Simulation‐Based Analysis of Insert Pull‐Out in Nickel‐Polyurethane Hybrid Foams Using CT‐Derived Geometries

Advanced Engineering Materials, EarlyView.
CT‐based finite element simulations combined with in situ X‐ray computed tomography are used to analyze insert pull‐out in nickel‐coated polymer foams. Despite variations in material parameters, deformation consistently concentrates within a narrow annular region around the insert.
Yannik Bautz, Jonas Fell, Hendrik Jost, Stefan Diebels, Hans‐Georg Herrmann   +4 more
wiley   +1 more source

Materials‐Driven Additive Manufacturing for Electrical Machines: Qualification‐Oriented Design Beyond Geometric Freedom

Advanced Engineering Materials, EarlyView.
This perspective reframes additive manufacturing for electrical machines as a qualification‐limited materials and architecture design problem. It links process–structure–property–performance relationships to magnetic, conducting, dielectric, and thermal property windows, highlighting where AM can enable segmented magnetic circuits, permanent magnet ...
Dénes Fodor, Loránd Szabó
wiley   +1 more source

A modified initial in-situ Stress Inversion Method based onFLAC3D with an engineering application

Open Geosciences, 2015
To improve the accuracy of an initial in-situstress field determined by inversion, we describe a modified initial in-situ stress inversion method that uses partialleast-squares regression based on FLAC3D.
Li Yong, Guo Yunhua, Zhu Weishen, Li Shucai, Zhou Hao   +4 more
doaj   +1 more source

Optoacoustic inversion via convolution kernel reconstruction in the paraxial approximation and beyond

Photoacoustics, 2019
In this article we address the numeric inversion of optoacoustic signals to initial stress profiles. Therefore we study a Volterra integral equation of the second kind that describes the shape transformation of propagating stress waves in the paraxial ...
O. Melchert, M. Wollweber, B. Roth
doaj   +1 more source