Results 61 to 70 of about 15,036 (261)

Versatile Pneumatic Twisted Coiled Actuators Enabled by Fiber‐Polymer Composite Fabrication

open access: yesAdvanced Functional Materials, EarlyView.
This work reports composite Pneumatic Twisted Coiled Actuators with embedded Kevlar fibers that convert pneumatic or hydraulic pressure into powerful linear motion. A novel precise manufacturing technique is used to systematically explore how design variables influence actuator mechanics and dynamics.
William J. Townsend   +5 more
wiley   +1 more source

An Investigation into the Effects of End-Plates and Blade Aspect Ratio on the Hovering Efficiency of Cycloidal Propellers

open access: yesAerospace
Cycloidal propellers are known for their omnidirectional vectored thrust, enabling smooth transitions between hovering and forward flight, making them ideal for unmanned aerial vehicles (UAVs) and electric vertical take-off and landing (eVTOL) aircraft ...
Hanzhen Li   +5 more
doaj   +1 more source

Electrostatically‐Stabilized PEG‐Free Lipid Nanoparticles for Systemic Nucleic Acid Delivery

open access: yesAdvanced Functional Materials, EarlyView.
This work describes non‐PEGylated layered lipid nanoparticles (nonPEG LLNPs), a gene delivery platform that improves upon standard PEGylated LNPs via electrostatic adsorption of charged polymers. nonPEG LLNPs maintain colloidal stability under biological stresses, enhance circulation time, and mitigate accelerated blood clearance and hepatic ...
Namita Nabar   +4 more
wiley   +1 more source

Numerical Study on the Effects of Surface Shape and Rotation on the Flow Characteristics and Heat Transfer Behavior of Tandem Cylinders in Laminar Flow Regime

open access: yesModelling
Tandem cylinders, widely used in heat exchangers, water storage units, and electronic cooling, require optimized flow and heat transfer to enhance engineering performance.
Yafei Li   +4 more
doaj   +1 more source

Numerical Prediction of Ship's Self-Propulsion Parameter by Using CFD Method [PDF]

open access: yesTransNav
This paper reports the results of numerical simulations of ship self-propulsion using the computational fluid dynamics (CFD) method. The sliding mesh method is utilized to model the actual propeller working behind the ship.
Nguyen Thi Ngoc Hoa
doaj   +1 more source

Bio‐Inspired Biopolymeric Implantable Platform for Localized and Sustained Drug Delivery in Solid Tumor Treatment

open access: yesAdvanced Functional Materials, EarlyView.
A bio‐inspired biopolymeric implantable drug delivery platform enables localized and sustained release of 7‐ethyl‐10‐hydroxycamptothecin (SN‐38) in solid tumor treatment. The three‐dimensional (3D) structured crosslinked‐chitosan implants are fabricated via 3D‐printed molds and provide drug release over 3 months, significantly inhibiting tumor growth ...
Mercedes Lozano‐Garcia   +12 more
wiley   +1 more source

Pantaloon hernia with two sliding components: The appendix -ascending colon in lateral sac and the urinary bladder in medial sac

open access: yesFormosan Journal of Surgery, 2020
An inguinal hernia is quite frequent in surgical praxis. One of the rare entities sliding type of inguinal hernia with an incidence of 2%–5%, which is difficult to diagnose preoperatively, most of the time, its diagnosis is made on the operational table.
Abhinandan Milind Kadiyal   +4 more
doaj   +1 more source

Sulfur‐Free Ultrahigh‐Refractive‐Index Polymers Enabled by Densely Packed Oxygen‐Bridged Dibenzofuran‐Cardo Architectures

open access: yesAdvanced Functional Materials, EarlyView.
A new class of sulfur‐free, oxygen‐bridged dibenzofuran‐based polymers is developed for ultrahigh‐refractive‐index applications. The rigid π‐extended architecture and enhanced molecular polarizability enable exceptional optical performance, combining refractive indices up to 1.848 with high Abbe numbers and full visible transparency. This work offers a
Hend A. Hegazy   +5 more
wiley   +1 more source

Enhancement of Aerodynamic Performance of Two Adjacent H-Darrieus Turbines Using a Dual-Rotor Configuration

open access: yesFluids
Improvements in the aerodynamic performance of the H-Darrieus turbine are crucial to address future energy requirements. This work aims to optimize the behavior of two adjacent turbines through the addition of a dual H-Darrieus rotor.
Douha Boulla   +4 more
doaj   +1 more source

Combined Type II Amyand's hernia and sliding hernia: A rare presentation of an unusual type of inguinal hernia

open access: yesInternational Journal of Abdominal Wall and Hernia Surgery, 2020
Repair of inguinal hernia is one of the most common procedures in general surgical practice. Amyand's hernia is an unusual condition that entails the presence of the appendix in the hernial sac.
Sameh Hany Emile   +2 more
doaj   +1 more source

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