Results 71 to 80 of about 56,526 (258)

Signal Feature Extraction and Quantitative Evaluation of Metal Magnetic Memory Testing for Oil Well Casing Based on Data Preprocessing Technique

Abstract and Applied Analysis, 2014
Metal magnetic memory (MMM) technique is an effective method to achieve the detection of stress concentration (SC) zone for oil well casing. It can provide an early diagnosis of microdamages for preventive protection. MMM is a natural space domain signal
Zhilin Liu, Lutao Liu, Jun Zhang
doaj   +1 more source

From Adult to Adolescent: Alignment in Clinical Trials and Outcomes in Axial Spondyloarthritis

Arthritis Care &Research, EarlyView.
Spondyloarthritis (SpA) is a group of chronic inflammatory diseases encompassing axial and peripheral forms, with up to 20% of patients developing symptoms before age 16. Despite this substantial pediatric burden, treatment options for juvenile‐onset SpA (JSpA), particularly those with axial disease (axJSpA), remain limited.
Pamela F. Weiss, Judith A. Smith, Robert A. Colbert, Erin Treemarcki, Michael H. Weisman, Walter P. Maksymowych, Hermine I. Brunner, for the Childhood Arthritis and Rheumatology Research Alliance, Spondyloarthritis Research and Treatment Network, and Pediatric Rheumatology Collaborative Study Group Advisory Council   +9 more
wiley   +1 more source

Statistical Parametric Maps for Functional MRI Experiments in R: The Package fmri

Journal of Statistical Software, 2011
The purpose of the package fmri is the analysis of single subject functional magnetic resonance imaging (fMRI) data. It provides fMRI analysis from time series modeling by a linear model to signal detection and publication quality images.
Jörg Polzehl, Karsten Tabelow
doaj  

Evolution of clinical trials in multiple sclerosis

Therapeutic Advances in Neurological Disorders, 2019
Clinical trials have advanced the treatment of multiple sclerosis (MS) by demonstrating the safety and efficacy of disease-modifying therapies (DMTs). This review discusses major changes to MS clinical trials in the era of DMTs.
Yinan Zhang, Amber Salter, Erik Wallström, Gary Cutter, Olaf Stüve   +4 more
doaj   +1 more source

Adaptive Observer for Coupled Wave PDE and Infinite ODE With Sampled Data and Unknown Input: Application to Brain Hemodynamics Estimation

International Journal of Adaptive Control and Signal Processing, EarlyView.
This article proposes a convergent adaptive observer for a damped wave PDE and an infinite‐dimensional ODE coupled in cascade using sampled‐in‐space ODE state measurements. The proposed observer estimates the distributed states of the PDE and ODE along with unknown PDE parameters and spatial input.
Zehor Belkhatir, Sarah Mechhoud, Taous‐Meriem Laleg‐Kirati   +2 more
wiley   +1 more source

Ai-Engineered Intelligent Hydrogel System For Controlled Drug Release

International Dental Journal
Aim or purpose: Current periodontitis therapies face limitations in biofilm eradication and adaptive treatment modulation, necessitating AI-driven platforms that enable real-time monitoring and dynamic drug adjustment to achieve patient-specific ...
Hongyu Chen, Mengjie Wu
doaj   +1 more source

Variable Stiffness Flexure Structures Enabled by Phase‐Change Gallium and Adhesive Interfacial Locking for Soft Robotic Applications

Advanced Engineering Materials, EarlyView.
A flexure‐based variable stiffness structure is developed by integrating phase‐change modulation and adhesive interfacial locking of gallium. The design enables a wide stiffness variability, transitioning from soft, flexible behavior to rigid, load‐supporting performance.
Sungjin Kim, Sohee John Yoon, Yong‐Lae Park   +2 more
wiley   +1 more source

Characterization methods for magnetorheological fluids: mini review

Journal of the Mechanical Behavior of Materials
Magnetorheological fluids (MRFs) are renowned for their rapid, field-dependent rheological changes under an external magnetic field. This unique feature gives them a remarkable ability for advanced applications in smart materials, adaptive systems, and ...
Imaduddin Fitrian, Osman Majed Reda, Kwenakgosi Modisaotsile Boniface, Alharbi Abdulrahman, Mahmoud Essam R. I., Aljabri Abdulrahman   +5 more
doaj   +1 more source

A defect profile estimation method for oil and gas pipelines based on dual-component magnetic flux leakage image fusion

You-qi chuyun
ObjectiveAccurate quantification of metal-loss defects in oil and gas pipelines lays an essential foundation for ensuring pipeline structural integrity and operational safety.
Lijun WANG, Wentao DONG, Hongbin PU, Ting WANG, Feng ZHOU   +4 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source