Results 21 to 30 of about 14,941 (216)

Could Mesh Placement Solve the Problem of High Radiological and Symptomatic Recurrence in Patients with a Large Sliding Hiatal Hernia? A Prospective Comparative Study [PDF]

Ain-Shams Journal of Surgery
Introduction: Large sliding Hiatal Hernia (HH) is associated with an exceedingly high incidence of recurrenceafter surgery. An ongoing controversy exists while managing it regarding the best surgical technique.
Tarek Osman, Ahmed Shoka, Ramy Fouad
doaj   +1 more source

Ground Test and Numerical Simulation on Ground Effect of Ducted Propeller System

Xibei Gongye Daxue Xuebao, 2020
The aerodynamic performances of a ducted propeller system applied in a manned vertical takeoff and landing aircraft considering the ground effect are investigated.

doaj   +1 more source

Improving The Horizontal Axis Wind Turbine Blade Profiles

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2018
Dueto greenhouse gases, we feel the effects of global warming more and more everyday, so we need far more efficient Horizontal Axis Wind Turbines (HAWTs).
Cemil Yiğit
doaj   +1 more source

Operating Behavior of Sliding Planet Gear Bearings for Wind Turbine Gearbox Applications—Part I: Basic Relations

Lubricants, 2021
The application of sliding planet gear bearings in wind turbine gearboxes has become more common in recent years. Assuming practically applied helix angles, the gear mesh of the planet stage causes high force and moment loads for these bearings involving
Thomas Hagemann, Huanhuan Ding, Esther Radtke, Hubert Schwarze   +3 more
doaj   +1 more source

A fundamental investigation of the interaction and impact of controlled torque ripples on gear mesh dynamics

Applied and Computational Mechanics, 2023
Gear trains are plagued by self-excited vibrations that are concentrated at the mesh frequency and its harmonics due to their varying mesh stiffness and deviations from the ideal involute profile.
Dave S., Neufond J., Nordmann R., Rinderknecht S.   +3 more
doaj   +1 more source

Large‐scale bidirectional arrayed genetic screens identify OXR1 and EMC4 as modifiers of αSynuclein aggregation

FEBS Open Bio, EarlyView.
Activation of the mitochondrial protein OXR1 increases pSyn129 αSynuclein aggregation by lowering ATP levels and altering mitochondrial membrane potential, particularly in response to MSA‐derived fibrils. In contrast, ablation of the ER protein EMC4 enhances autophagic flux and lysosomal clearance, broadly reducing α‐synuclein aggregates.
Sandesh Neupane, Lea Nikolić, Lorenzo Maraio, Thomas Goiran, Nathan Karpilovsky, Stefano Sellitto, Vangelis Bouris, Jiang‐An Yin, Ronald Melki, Edward A Fon, Adriano Aguzzi, Elena De Cecco   +11 more
wiley   +1 more source

Sliding mesh simulations of a wind turbine rotor with actuator line lattice‐Boltzmann method

Wind Energy
Simulating entire wind farms with an actuator line model requires significant computational effort, especially if one is interested in wake dynamics and wants to resolve the tip vortices.
André F. P. Ribeiro, Claudia Muscari
doaj   +1 more source

Feasibility and Tolerability of Performing Portable MRI for Neurological Disorders in an Outpatient Neurology Clinic: A Prospective Cohort

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Accessing brain magnetic resonance imaging (MRI) can be challenging, especially for underserved patients, which may lead to disparities in neurological diagnosis. Method This mixed‐methods study enrolled adults with one of four neurological disorders: mild cognitive impairment or dementia of the Alzheimer type, multiple sclerosis ...
Maya L. Mastick, Nomin Enkhtsetseg, Joseph Sadok, Matheus Mochetti, Annabel Sorby Adams, Jennifer Guo, Cristina Trapaga Hacker, Isabella Gomez Hjerthen, Seungwon Lee, Siddharth Satish, Andrew S. Ham, Justin Hill, Denis Balaban, Kevin Kyle, Rebecca L. Gillani, Marcelo Matiello, Aleksandar Videnovic, Eric C. Klawiter, W. Taylor Kimberly, Farrah J. Mateen   +19 more
wiley   +1 more source

Landmark-based homologous multi-point warping approach to 3D facial recognition using multiple datasets [PDF]

PeerJ Computer Science, 2020
Over the years, neuroscientists and psychophysicists have been asking whether data acquisition for facial analysis should be performed holistically or with local feature analysis.
Olalekan Agbolade, Azree Nazri, Razali Yaakob, Abdul Azim Abd Ghani, Yoke Kqueen Cheah   +4 more
doaj   +2 more sources

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