Results 101 to 110 of about 92,913 (309)

An In Situ Embedded B‐MOF Sponge With Shape‐Memory for All‐in‐One Diabetic Wound Therapy

open access: yesAdvanced Healthcare Materials, EarlyView.
A smart shape‐memory sponge dressing (P1A3@B‐MOF) is developed for accelerated diabetic wound healing. It achieves pH‐responsive corelease of Zn2+ and salvianolic acid B, synergistically providing antibacterial action, repolarizing macrophages to the M2 phenotype, and promoting angiogenesis.
Hai Zhou   +11 more
wiley   +1 more source

Energy Performance and Radial Force of a Mixed-Flow Pump with Symmetrical and Unsymmetrical Tip Clearances

open access: yesEnergies, 2017
The energy performance and radial force of a mixed flow pump with symmetrical and unsymmetrical tip clearance are investigated in this paper. As the tip clearance increases, the pump head and efficiency both decrease.
Yue Hao   +5 more
doaj   +1 more source

Melt-Mixing by Novel Pitched-Tip Kneading Disks in a Co-Rotating Twin-Screw Extruder

open access: yes, 2010
Melt-mixing in twin-screw extruders is a key process in the development of polymer composites. Quantifying the mixing performance of kneading elements based on their internal physical processes is a challenging problem.
Alsteens   +32 more
core   +1 more source

Three-Dimensional (3D) Printed Microneedles for Microencapsulated Cell Extrusion [PDF]

open access: yes, 2018
Cell-hydrogel based therapies offer great promise for wound healing. The specific aim of this study was to assess the viability of human hepatocellular carcinoma (HepG2) cells immobilized in atomized alginate capsules (3.5% (w/v) alginate, d = 225 µm ...
Bouzos, Evangelia   +6 more
core   +3 more sources

Ultrasound‐Triggered Nanobubbles for Endothelial‐Targeted Drug Delivery in the Detection and Treatment of Doxorubicin‐Induced Cardiotoxicity

open access: yesAdvanced Healthcare Materials, EarlyView.
The DA/VTP‐NBs selectively recognized cardiac ECs damaged by DIC and achieved cell‐level targeted imaging. Then US‐triggered controlled release successfully enabled the release of DAPA within the DA/VTP‐NBs at the site of injury. This precise on‐demand drug release approach amplifies a series of localized therapeutic effects through the mtDNA‐mediated ...
Jun Zhang   +8 more
wiley   +1 more source

Unsteady flow mechanisms in the last stage of a transonic low pressure steam turbine - multistage effects and tip leakage flows

open access: yesJournal of the Global Power and Propulsion Society, 2017
In this paper, an unsteady investigation of the last two stages of a low-pressure steam turbine with supersonic airfoils near the tip of the last stage’s rotor blade is presented.
Ilias Papagiannis   +6 more
doaj   +1 more source

Three-dimensional analysis of the Pratt and Whitney alternate design SSME fuel turbine [PDF]

open access: yes
The three dimensional viscous time-mean flow in the Pratt and Whitney alternate design space shuttle main engine fuel turbine is simulated using the average passage Navier-Stokes equations.
Adamczyk, J. J.   +2 more
core   +1 more source

Fuel leak detection on large transport airplanes [PDF]

open access: yes, 2016
Fuel leakage has the risk of being ignited by external ignition sources, and therefore it is important to detect any fuel leakage before the departure of the aircraft.
Behbahani-Pour, M.J., Radice, G.
core   +1 more source

Controllable Dynamic Mechanical Cell Stimulation using Magnetically Actuated Artificial Cilia

open access: yesAdvanced Healthcare Materials, EarlyView.
This paper introduces a platform based on magnetic artificial cilia for providing controllable dynamic mechanical stimulation to single cells, suitable for investigating large cell populations and enabling live cell imaging. Proof‐of‐principle experiments show that cell morphology is strongly influenced by the artificial cilia, that cellular forces can
Roel Kooi   +5 more
wiley   +1 more source

Energy performance and flow characteristics of a multiphase pump with different tip clearance sizes

open access: yesAdvances in Mechanical Engineering, 2019
Deep sea oil resources worldwide possess great potential for exploration; however, multiphase medium technology requires urgent development. The multiphase pump has achieved great success as one of the most advanced machinery in underwater oil and gas ...
Jinsong Zhang   +3 more
doaj   +1 more source

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