Results 71 to 80 of about 390,316 (276)

Dilatation Operator and Space-time Geometry

open access: yes, 2008
We discuss the possibility of defining a dynamical model describing the RG-flow for a Quantum Field Theory. Construction of the dilatation operator is discussed in details for one-vertex one-loop level.Comment: 6 pages.
Beisert   +9 more
core   +1 more source

On‐Demand Activation of Thin Alginate Shell Encapsulated Volatile Liquid for Untethered Pneumatic Soft Actuation

open access: yesAdvanced Engineering Materials, EarlyView.
Phase‐changing liquids enable untethered pneumatic actuation in soft robotics but suffer from volatility and storage challenges. This work reports a simple method to encapsulate Novec 7000 within micron‐thin alginate shells via in situ injection and ionic crosslinking.
Rayan A. M. Basodan   +3 more
wiley   +1 more source

A Combination of Dilatation and Stenting for Treatment of Anal Stricture: A Case Report

open access: yesTurkish Journal of Colorectal Disease
Intersphincteric resection (ISR) was introduced recently as an alternative procedure for abdominoperineal resection and sparing the anal sphincter. Anastomosis stricture is a common complication after ISR.
Ömer Faruk İnanç, Wafi Attaallah
doaj   +1 more source

Deformations of normed groupoids and differential calculus. First part [PDF]

open access: yes, 2009
Differential calculus on metric spaces is contained in the algebraic study of normed groupoids with $\delta$-structures. Algebraic study of normed groups endowed with dilatation structures is contained in the differential calculus on metric spaces ...
Buliga, Marius
core  

Closed surface bundles of least volume

open access: yes, 2010
Since the set of volumes of hyperbolic 3-manifolds is well ordered, for each fixed g there is a genus-g surface bundle over the circle of minimal volume.
Cho   +10 more
core   +1 more source

Smart, Bio‐Inspired Polymers and Bio‐Based Molecules Modified by Zwitterionic Motifs to Design Next‐Generation Materials for Medical Applications

open access: yesAdvanced Functional Materials, EarlyView.
Bio‐based and (semi‐)synthetic zwitterion‐modified novel materials and fully synthetic next‐generation alternatives show the importance of material design for different biomedical applications. The zwitterionic character affects the physiochemical behavior of the material and deepens the understanding of chemical interaction mechanisms within the ...
Theresa M. Lutz   +3 more
wiley   +1 more source

Funduscopy:to dilate or not to dilate? [PDF]

open access: yesBMJ, 2006
Fundoscopy is commonly used by non-ophthalmologists to screen for diabetic retinopathy.1 The sensitivity of fundoscopy through a dilated pupil for detecting diabetic retinopathy is twice as high as detection through an undilated pupil,2 but surveys of general practitioners have found that only 1 in 250 regularly dilate pupils, even when assessing ...
Gerald, Liew   +3 more
openaire   +2 more sources

A Bespoke Programmable Interpenetrating Elastomer Network Composite Laryngeal Stent for Expedited Paediatric Laryngotracheal Reconstruction

open access: yesAdvanced Functional Materials, EarlyView.
A programmable interpenetrating double‐network architecture, created via 3D‐TIPS printing and resin infusion, synergistically combines thermoplastic and thermosetting elastomers to balance structural rigidity and surface softness—crucial for paediatric laryngeal stents.
Elizabeth F. Maughan   +14 more
wiley   +1 more source

Fluoroscopically guided balloon dilation of esophageal stricture in Plummer–Vinson syndrome: A report of two cases

open access: yesInternational Journal of Gastrointestinal Intervention, 2020
Plummer–Vinson syndrome is known as the association of dysphagia, upper esophageal web, weight loss, and iron-deficiency anemia. Esophageal dilation therapy is usually necessary to remove webs and to relieve dysphagia in order to encourage oral intake ...
Ibrahim Alrashidi   +3 more
doaj   +1 more source

Photonic Engineering Enables All‐Passive Upconversion Imaging with Low‐Intensity Near‐Infrared Light

open access: yesAdvanced Functional Materials, EarlyView.
A passive upconversion imaging system enables the observation of scenes illuminated by low‐intensity incoherent near‐infrared light from 750 to 930 nm, by converting it into the visible without the use of external power. The upconverter is enabled by triplet–triplet annihilation in a bulk heterojunction, with absorption enhanced by plasmonic resonators
Rabeeya Hamid   +13 more
wiley   +1 more source

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