Results 71 to 80 of about 9,374,095 (210)

Absence seizures: Update on signaling mechanisms and networks

Epilepsia Open, EarlyView.
Abstract Absence seizures (AS) are a hallmark of genetic generalized epilepsies (GGE), characterized by brief episodes of impaired consciousness accompanied by electroencephalographic spike‐and‐wave discharges (SWDs). Traditionally attributed to cortico‐thalamo‐cortical (CTC) dysrhythmia, emerging evidence suggests a more intricate pathophysiological ...
Ozlem Akman, Filiz Onat
wiley   +1 more source

Displacement Estimation of Structures With Flag‐Shaped Hysteresis Loops

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Time‐history analyses were conducted on single‐degree‐of‐freedom (SDOF) systems with flag‐shaped hysteresis loops using a far‐field ground motion suite to estimate peak displacements, Δp, and equivalent deformation cycles, Nc, associated with cumulative displacement demands.
Yudi Zhang, Gregory A. MacRae, Geoffrey W. Rodgers, Shahab Ramhormozian, Charles Clifton, Masoumeh Farshbaf   +5 more
wiley   +1 more source

Structural Effects of Vertical Non‐Skeletal Elements (NSEs) With Rocking Mechanisms

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT This paper introduces the structural effects provided by vertical non‐skeletal elements (NSEs), such as claddings and partitions, with vertical slotted holes at their supports to enable rocking as the frame undergoes significant lateral deformation.
Zheng Luo, Gregory A. MacRae, Chin‐Long Lee   +2 more
wiley   +1 more source

Use of ultrasonography in assessing peri‐implant osseous defects: An in vitro study

Journal of Periodontology, EarlyView.
Abstract Background The purpose of this study is to investigate the feasibility and diagnostic accuracy of ultrasonography in peri‐implant defect identification and evaluation, and to compare ultrasonography (USG) with cone‐beam computed tomography (CBCT) in defect identification and evaluation in an in vitro model.
Melissa Rachel Fok, Alice Yee Ting Kan, Chris Tat Chuen Fok, Ray Tanaka, George Pelekos   +4 more
wiley   +1 more source

Rearrangement Towards Stability: Plastic Shakedown in Granular Materials Under Thermal Cycles

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Granular materials are routinely subjected to thermal cycling due to natural and anthropogenic phenomena. Despite the ubiquity of this occurrence and its relevance for science, engineering, and technology, the long‐term thermo‐mechanical response of granular materials to repeated heating and cooling remains poorly understood.
Naghmeh Mehraeen, Alessandro F. Rotta Loria   +1 more
wiley   +1 more source

The investigation on the bending fatigue properties of Ti–6Al–4V lattice sandwich structures fabricated EB-PBF

Journal of Materials Research and Technology
In this study, lattice sandwich structures of Ti–6Al–4V alloy with simple cubic (SC) and rhombic dodecahedron (RD) unit cells were prepared by electron beam powder bed fusion (EB-PBF) technique.
Y. Han, S.X. Su, L. Yang, S.J. Li
doaj   +1 more source

Effects of adjustable‐volume transfemoral prosthetic sockets on balance and falls: A randomized clinical trial

PM&R, EarlyView.
Abstract Background Adjustable‐volume prosthetic sockets have been developed to allow users to accommodate volume fluctuations throughout the day. Improvement in socket fit is thought to enhance the connection between the user's residual limb and prosthesis and may therefore improve postural control and balance.
Deanna H. Gates, Jeffrey Wensman, Anthony R. Gutierrez, Jordan Kartes, Marco A. Avalos, Jenevieve A.W. Surkin, Noah J. Rosenblatt   +6 more
wiley   +1 more source

The concurrent ratcheting and stiffness degradation-based damage variable in SA508 steel samples undergoing stress cycles at room and elevated temperatures

Materials Research Express
This study evaluates the interaction between ratcheting and stiffness degradation in SA508 steel samples at various operating temperatures using a combined isotropic-kinematic hardening framework.
M Karimi, A Varvani-Farahani
doaj   +1 more source

Elastic Stress Ratcheting Assessment Considering Secondary Stress Due to Structural Discontinuity Effect

Applied Sciences
The partial secondary stress (hereinafter referred to as secondary mechanical membrane stress QL) generated by structural discontinuity effects is not considered by the current codes and standards and will lead to conservatism in stress analysis results.
Yuping Su, Jun Shen, Hongyan Feng
doaj   +1 more source

Enhancement in fatigue performance of metastable austenitic stainless steel through directed energy deposition additive manufacturing

Materials & Design, 2019
The effect of the as-built microstructure and defect distribution on the fatigue performance of a metastable austenitic stainless-steel fabricated by directed energy deposition was analyzed in two fatigue regimes.
Jerard Gordon, Jacob Hochhalter, Christina Haden, D. Gary Harlow   +3 more
doaj   +1 more source