Results 81 to 90 of about 229,232 (375)

Boundary reduction formula [PDF]

open access: yes, 2002
An asymptotic theory is developed for general non-integrable boundary quantum field theory in 1+1 dimensions based on the Langrangean description. Reflection matrices are defined to connect asymptotic states and are shown to be related to the Green ...
Bajnok, Z., Bohm, G., Takacs, G.
core   +3 more sources

A Degradable Bioinspired Flier with Aerogel‐Based Colorimetric Sensors for Environmental Monitoring

open access: yesAdvanced Science, EarlyView.
Biodegradable fliers are developed inspired by Tipuana tipu samaras, integrating cellulose nanocrystal aerogel (CNCa) sensors loaded with natural dyes for pH and ammonia detection. The lightweight, degradable fliers mimic natural morphology and aerodynamics, offering an eco‐friendly, scalable solution for in situ environmental monitoring after passive ...
Gianpaolo Gallo   +4 more
wiley   +1 more source

Thoracic Outlet Syndrome: Single Center Experience on Robotic Assisted First Rib Resection and Literature Review [PDF]

open access: gold, 2022
Andreas Gkikas   +7 more
openalex   +1 more source

Ecosystem‐Centered Robot Design: Toward Ecoresorbable Sustainability Robots (ESRs)

open access: yesAdvanced Science, EarlyView.
Robots exploring natural ecosystems can support monitoring and conservation, but must adopt ecosystem‐centered design to avoid pollution, waste, and damage. This review proposes guidelines for co‐designing ecoresorbable sustainability robots (ESRs), uniting materials, robotics, and ecological contexts in a single framework.
Tülin Yılmaz Nayır   +4 more
wiley   +1 more source

Diagnostic value of D-dimer for lower extremity deep venous thrombosis caused by rib fracture: a retrospective study [PDF]

open access: gold, 2023
Lei Feng   +7 more
openalex   +1 more source

On signal-noise decomposition of timeseries using the continuous wavelet transform: Application to sunspot index [PDF]

open access: yes, 2003
We show that the continuous wavelet transform can provide a unique decomposition of a timeseries in to 'signal-like' and 'noise-like' components: From the overall wavelet spectrum two mutually independent skeleton spectra can be extracted, allowing the
Bak   +6 more
core   +3 more sources

Chemical constituents of Rheum ribes L.

open access: yes, 2017
Chemical investigation of the dichloromethane extract of Rheum ribes has led to the isolation of β-sitosteryl-3β-glucopyranoside-6'-O-fatty acid esters (1), β-sitosterol (2), phytyl fatty acid esters (3), triacylglycerols (4) and chlorophyllide a (5 ...
R. Consolacion   +6 more
semanticscholar   +1 more source

Edible Pneumatic Battery for Sustained and Repeated Robot Actuation

open access: yesAdvanced Science, EarlyView.
This work presents an edible energy source and valve system to power soft, pneumatically driven edible robots. A chemical reaction between sodium bicarbonate and citric acid generates carbon dioxide gas, and a pressure‐triggered edible valve enables self‐repetitive motion of the edible actuator.
Bokeon Kwak   +5 more
wiley   +1 more source

Incidence of urinary incontinence after hip fracture surgery and associated risk factors: a prospective study

open access: yesBMC Geriatrics
Background The contribution of the postoperative process to developing or worsening urinary incontinence (UI) after hip fracture surgery (HFS) remains unclear.
Marta Arroyo-Huidobro   +9 more
doaj   +1 more source

Técnicas de evaluación del aprendizaje en Derecho Financiero y Tributario adaptadas al Espacio Europeo de Educación Superior [PDF]

open access: yes, 2010
El presente trabajo es fruto de la comunicación presentada a la Jornada sobre docencia del Derecho y tecnologías de la información y la comunicación, celebradas en Barcelona en junio de 2010. El trabajo refleja la experiencia llevada a cabo por la Red de
Ribes Ribes, Aurora
core  

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