Results 61 to 70 of about 480,284 (338)

Covalent Adaptable Networks with Associative Siloxane Exchange Enabled by Amide‐Based Internal Catalysis: Designing for Reprocessability and Extrudability by Increasing the Cross‐Link Density

open access: yesAdvanced Functional Materials, EarlyView.
Internally catalyzed siloxane dynamic chemistry is demonstrated resulting from amides covalently linked through alkyl chains to siloxanes. The alkyl length in the siloxane‐containing monomer tunes the network cross‐link density. Siloxane exchange dynamics are faster with increasing cross‐link density, because associative exchange is second order in ...
Nathan S. Purwanto   +5 more
wiley   +1 more source

Comets and Balloons [PDF]

open access: yesNature, 1881
THE notion that the tails of comets are produced by an emission of the nucleus prevails at present among astronomers. I have just stated in a small pamphlet, 8vo, 32 pages, the reason why I presume to entertain another opinion on this subject. The details of my last aerial trip of July 2 show that by using an electric light night ascents at a ...
openaire   +2 more sources

Balloon sinuplasty [PDF]

open access: yesIndian Journal of Otolaryngology and Head & Neck Surgery, 2010
Balloon sinuplasty is a technique in endoscopic sinus surgery that involves minimally invasive procedures to dilate the obstructed or stenosed anatomical sinus pathways. Procedure is derived from the well-recognized techinique of angioplasty. This article highlights the procedural methods with review of literature and my personal experience in balloon ...
openaire   +3 more sources

Enzyme‐Regulated Extended Swelling of Hydrogels for Dehiscence‐Less Tissue Expansions

open access: yesAdvanced Functional Materials, EarlyView.
An interpenetrating hydrogel network with swelling under regulation by enzymatic degradation (INSURED) is fabricated to avoid dehiscence. INSURED remains structurally intact post‐implantation, while HYAL injection enables control over the onset and rate of swelling.
Byung Ik Park   +10 more
wiley   +1 more source

A Stray Balloon [PDF]

open access: yesNature, 1885
THE Times published on September 29 a short extract from the Bermuda Royal Gazette, communicated by me, describing the appearance of a balloon, passing over Bermuda on August 27, and which I suggested might be one of those which ascended this year in England or France, and had not been subsequently heard of.
openaire   +2 more sources

Geometrically Templated, Ultra‐Lightweight and High Strength Soap Films from Lyotropic Liquid Crystalline Graphene Oxide/Polymer Composites

open access: yesAdvanced Functional Materials, EarlyView.
Shellular materials form spontaneously by dip coating the primitive triply periodic minimal surface (TPMS) wireframe in an aqueous solution of lyotropic liquid crystalline graphene oxide (GO) nanosheets mixed with polymers. Regulated by surface tension, GO nanosheets align on the polymer soap film as the stress builds up during drying.
Yinding Chi   +9 more
wiley   +1 more source

Peak‐in‐Valley Metal Nano‐Architectures via E‐Beam‐Guided Metal Oxide Redox

open access: yesAdvanced Functional Materials, EarlyView.
Focused electron beam irradiation of nanoelectrosprayed water‐ammonia films enables the synthesis of topologically complex metal nanostructures via solvent‐mediated metal/metal‐ion redox control. Low ammonia favors radiolytic oxidation, etching copper.
Auwais Ahmed, Andrei G. Fedorov
wiley   +1 more source

An Unusual Melanocytic Nevus of Conjunctiva : Balloon Cell Nevus [PDF]

open access: yes, 2011
Melanocytic nevi are one of the most common benign tumors of the conjunctiva. The balloon cell nevus is a rare and unusual variant of nevus of melanocytic origin, in which more than 50% of the tumor is composed of large polygonal cells with small nucleus
Geethalakshmi, U   +3 more
core  

Novel Drug‐Testing Platform for Vascular Injury‐induced Intimal Hyperplasia Using a Microphysiological System

open access: yesAdvanced Healthcare Materials, EarlyView.
This study develops a 3D vascular injury model using a microphysiological system that mimics key features of intimal hyperplasia. Antiproliferative drugs reduced VSMC proliferation but worsened endothelialdenudation. A combination of diphenyleneiodonium and quercetin effectively reduced proliferation and migration of VSMC and inflammation while ...
Ungsig Nam   +7 more
wiley   +1 more source

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