Results 71 to 80 of about 503,291 (385)

Advancements in Retinal Tissue-Mimicking Optical Coherence Tomography Phantoms: Materials, Properties, and Applications

open access: yesBioChem
Optical coherence tomography (OCT) phantoms are essential tools for calibrating imaging systems, validating diagnostic algorithms, and bridging technological advancements with clinical applications. This review explores the development and application of
Mukhit Kulmaganbetov
doaj   +1 more source

Constraints on the cosmic equation of state: age conflict versus phantom energy. Age-redshift relations in an accelerated universe

open access: yes, 2004
The currently available values and confidence limits for Omega_m0, H_0 and globular cluster ages still indicate that the dark energy that dominates the Universe could also be a form of quintessence or phantom energy.
Aurich   +32 more
core   +1 more source

Etiology of phantom limb syndrome: Insights from a 3D default space consciousness model [PDF]

open access: yes, 2015
In this article, we examine phantom limb syndrome to gain insights into how the brain functions as the mind and how consciousness arises. We further explore our previously proposed consciousness model in which consciousness and body schema arise when ...
Crawford, Molly W.   +2 more
core   +1 more source

Insights into PI3K/AKT signaling in B cell development and chronic lymphocytic leukemia

open access: yesFEBS Letters, EarlyView.
This Review explores how the phosphoinositide 3‐kinase and protein kinase B pathway shapes B cell development and drives chronic lymphocytic leukemia, a common blood cancer. It examines how signaling levels affect disease progression, addresses treatment challenges, and introduces novel experimental strategies to improve therapies and patient outcomes.
Maike Buchner
wiley   +1 more source

Is simulation in dentistry able to replace clinical practice? Analysis of students' opinions

open access: yesJournal of Education, Health and Sport, 2023
Haptic simulators are technically advanced devices that enable students to learn practical skills without the participation of patients. A survey conducted among students of the Medical University of Lublin showed a higher level of satisfaction while ...
Alicja Wójcik   +4 more
doaj   +1 more source

Phantom without ghost

open access: yes, 2013
The Nine-Year WMAP results combined with other cosmological data seem to indicate an enhanced favor for the phantom regime, comparing to previous analyses.
Nojiri, Shin'ichi   +1 more
core   +1 more source

Making tau amyloid models in vitro: a crucial and underestimated challenge

open access: yesFEBS Letters, EarlyView.
This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley   +1 more source

Observational Constraints on Phantom Crossing DGP Gravity

open access: yes, 2010
We study the observational constraints on the Phantom Crossing DGP model. We demonstrate that the crossing of the phantom divide does not occur within the framework of the original Dvali-Gabadadze-Porrati (DGP) model or the DGP model developed by Dvali ...
Alam U.   +4 more
core   +2 more sources

A stepwise emergence of evolution in the RNA world

open access: yesFEBS Letters, EarlyView.
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley   +1 more source

Abdo-Man: a 3D-printed anthropomorphic phantom for validating quantitative SIRT

open access: yesEJNMMI Physics, 2016
BackgroundThe use of selective internal radiation therapy (SIRT) is rapidly increasing, and the need for quantification and dosimetry is becoming more widespread to facilitate treatment planning and verification. The aim of this project was to develop an
J. Gear   +6 more
semanticscholar   +1 more source

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