Results 61 to 70 of about 131,875 (310)

The Effect of Water Quality Characteristics on Cavitation Noise [PDF]

open access: yes, 2001
This study investigated the effects of seawater on cavitation noise using a water jet test, a two-dimensional wing test, and a three-dimensional wing test.
Hikaru, Kamiirisa
core  

Physicochemical Reinforcement Unlocks Sterilization‐Stable Anisotropic Hydrogels for Cell‐Compatible Mock Arteries

open access: yesAdvanced Healthcare Materials, EarlyView.
ABSTRACT In vitro arterial models offer ethical and robust alternatives for vascular research but require cytocompatible materials that replicate physiological mechanics. Poly(vinyl alcohol) (PVA) hydrogels produced by directional freezing and salting‐out (PVA DFSO) are anisotropic yet lack stability for cell culture. Herein, methacrylated PVA (PVA‐MA)
Javiera Sanhueza Ortega   +4 more
wiley   +1 more source

Experimental Study on Dynamic Structure of Propeller Tip Vortex

open access: yesPolish Maritime Research, 2020
Propeller cavitation is a main source of fluctuating pressure and noise induced by propellers, and the tip vortex cavitation is the principal source. The present study measures the flow fields near the blade tip using the 2D-PIV technique.
Guangnian Li, Chen Qingren, Liu Yue
doaj   +1 more source

Epidermal Patch Technologies for Integrated Healthcare and Infection Management

open access: yesAdvanced Healthcare Materials, EarlyView.
Epidermal patches have evolved from simple wound coverings into multifunctional, skin‐conformable platforms integrating drug delivery, biosensing, and therapeutic functionalities. This review highlights their material innovations, fabrication strategies, and intelligent designs, including hydrogels, microneedles, and flexible electronics, while ...
Yuqi Wang   +7 more
wiley   +1 more source

Quadcopter thrust optimization with ducted-propeller

open access: yesMATEC Web of Conferences, 2017
In relation to quadcopter body frame model, propeller can be categorized into propeller with ducted and without ducted. This study present differences between those two using CFD (Computational Fluid Dynamics) method.
Kuantama Endrowednes, Tarca Radu
doaj   +1 more source

Unveiling the Role of Curvature in Carbon for Improved Energy Release of Ammonium Perchlorate

open access: yesAdvanced Materials, EarlyView.
High‐curvature carbon materials identified via machine learning and simulation can enhance the heat release and combustion performance of ammonium perchlorate. ABSTRACT The catalytic role of carbon curvature in the thermal decomposition of ammonium perchlorate (AP) remains largely unexplored. To address this gap, this study employs machine learning and
Dan Liu   +8 more
wiley   +1 more source

Influence of film thickness on cavitation erosion of coating film

open access: yesNihon Kikai Gakkai ronbunshu, 2018
The influences of film thickness of vinyl and silicone resin coatings on cavitation erosion were examined quantitatively in seawater using a vibratory apparatus.
Hiromi MOCHIZUKI   +4 more
doaj   +1 more source

MODELING AND CALCULATION OF A GEAR CONNECTION FOR A UNIVERSAL DEVICE FOR MEASURING THE THRUST OF AN UNMANNED AERIAL VEHICLE PROPELLER

open access: yesНадежность и качество сложных систем, 2022
Background. The rapid development and widespread use of various unmanned aerial vehicles requires the introduction of their typification and certification.
D.S. Ergaliev   +4 more
doaj   +1 more source

Application of an optimization method to high performance propeller designs [PDF]

open access: yes
The application of an optimization method to determine the propeller blade twist distribution which maximizes propeller efficiency is presented. The optimization employs a previously developed method which has been improved to include the effects of ...
Li, K. C., Stefko, G. L.
core   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

open access: yesAdvanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen   +5 more
wiley   +1 more source

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