Results 111 to 120 of about 954 (249)

Influence of Loading Frequency on Fatigue Properties of Structural Materials [PDF]

, 2008
Tato práce se zabývá vlivem frekvence zatěžování na únavu konstrukčních materiálů. Nízkofrekvenční zatěžování (do 200 Hz) nemá ve většině případů na únavové vlastnosti vliv.
Kašpar, Jan
core  

Gender‐Affirming Feminization Voice Surgery: A Scoping Review of Preoperative Assessments

The Laryngoscope, EarlyView.
PRISMA flowchart. ABSTRACT Objective To identify the preoperative assessments and criteria surgeons use to assess the suitability of transfeminine patients for voice feminization surgery. Data Sources Electronic search of Ovid MEDLINE, Ovid Embase, APA PsycINFO, Cochrane Library, CINAHL, and PubMed excluding MEDLINE records was performed on February 11,
Jadin Chahade, Hedieh Keshavars, Janice Y. Kung, Teresa L. D. Hardy, Caroline C. Jeffery   +4 more
wiley   +1 more source

Ultrasonic fatigue analysis of 3D-printed carbon fiber reinforced plastic. [PDF]

Heliyon, 2022
Jung CH, Kang Y, Song H, Lee MG, Jeon Y.
europepmc   +1 more source

Single‐Breathhold 3D MR Elastography in the Liver, With Simultaneous R2* and PDFF Mapping

Magnetic Resonance in Medicine, EarlyView.
Purpose To develop a sequence for the rapid acquisition of MR elastography (MRE) parameters in 3D, with simultaneous measurement of proton‐density fat fraction (PDFF) and R2* for multiparametric assessment of liver disease. Methods The proposed sequence uses an interleaved motion‐encoding scheme to acquire 3D volumes of all motion encodings and wave ...
Donovan P Tripp, Anne‐Sophie van Schelt, Omar Darwish, Karl P Kunze, Shamsa Al Harthy, Nader S Metwalli, Ahmed M Gharib, Claudia Prieto, René M Botnar, Ralph Sinkus, Radhouene Neji   +10 more
wiley   +1 more source

Early Detection of Subsurface Fatigue Cracks in Rolling Element Bearings by the Knowledge-Based Analysis of Acoustic Emission. [PDF]

Sensors (Basel), 2022
Hidle EL, Hestmo RH, Adsen OS, Lange H, Vinogradov A.   +4 more
europepmc   +1 more source

Overcoming Challenges in 3D Printing of Polyolefins and Their Composites: A Review on Strategies for Improved Printability and Performance

Polymer Engineering &Science, EarlyView.
This review integrates the molecular fundamentals, key challenges, and mitigation strategies in polyolefin 3D printing, focusing on shrinkage, warpage, and adhesion control. It highlights material design approaches using recycled polyolefins and functional fillers to improve printability, mechanical properties, and sustainability in additive ...
Malik Hassan, Philip McMorran, Marwan Eid, Julia Blair, Amar K. Mohanty, Manjusri Misra   +5 more
wiley   +1 more source

NASA Glenn Research Center Support of the Advanced Stirling Radioisotope Generator Project [PDF]

A high-efficiency radioisotope power system was being developed for long-duration NASA space science missions. The U.S. Department of Energy (DOE) managed a flight contract with Lockheed Martin Space Systems Company to build Advanced Stirling ...
Wilson, Scott D., Wong, Wayne A.
core   +1 more source

A Self‐Supervised Machine Learning Approach for the Estimation of Open‐Circuit Voltage Degradation in Photovoltaic Systems

Progress in Photovoltaics: Research and Applications, EarlyView.
This study introduces a self‐supervised machine learning approach integrating physics‐based principles to estimate open‐circuit voltage (voc$$ {v}_{oc} $$) degradation in photovoltaic systems using SCADA data. By combining clustering and regression algorithms, our method detects performance deviations without labelled datasets.
Sandra Riaño, Jose‐Domingo Santos, Miguel Esteras, Amaia Abanda, Javier Del Ser   +4 more
wiley   +1 more source

A straightforward machine learning-based giga-cycle fatigue life regression approach for polymer matrix composites

Results in Engineering
Fatigue experiments, even during the design phase and material selection for composite structures, are time-consuming. Recently, machine learning (ML) models have shown a strong potential to predict fatigue life.
Aravind Premanand, Gaurav Sharma, Frank Balle   +2 more
doaj   +1 more source

Impact of biological/targeted versus conventional synthetic disease‐modifying antirheumatic drugs on patient‐reported outcomes in rheumatoid arthritis

Rheumatology &Autoimmunity, EarlyView.
Patient‐reported outcomes (PROs) were compared among rheumatoid arthritis patients who maintained low disease activity or remission for at least 6 months based on the disease‐modifying antirheumatic drug (DMARD)administered. Even with comparable disease activity, methotrexate (MTX) group, biological/targeted synthetic DMARDs (b/tsDMARDs), particularly ...
Masafumi Sugiyama, Saki Okuda‐Tsuchimoto, Takashi tsuchimoto, Koji Kinoshita, Itaru Matsumura   +4 more
wiley   +1 more source