Results 61 to 70 of about 896,035 (305)

Seeing World From The Eyes of Low Vision Subject

Delhi Journal of Ophthalmology, 2020
Low vision is a moderate to severe form of visual impairment wherein best corrected visual acuity varies from less than 6/18 to 3/60 in better eye. A low vision subject is potentially able to use his residual vision for execution of tasks of his interest.
Punita Kumari Sodhi
doaj   +1 more source

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Theoretical effect of changes in entrance pupil magnification on wavefront-guided laser refractive corneal surgery

, 2005
Purpose: To explore theoretically the effect on the correction of higher order aberrations of changes in the magnification between the aperture stop (iris) and entrance pupil of the eye, following myopic excimer laser ablation.\ud Methods: Using a ...
William N Charman, Atchison, David A., Charman, William N., David A Atchison   +3 more
core   +1 more source

Comparative Evaluation of Morphological Characteristics of Root Surfaces after Scaling and Root Planing under Naked Eye and Magnification: An In vitro Scanning Electron Microscope Study

Advances in Human Biology
Introduction: The primary aetiologies of periodontitis include bacterial plaque and calculus. Effective periodontal treatment necessitates the thorough removal of these deposits through scaling and root planing (SRP) using manual and ultrasonic ...
Udita Shara, Prajakta Rao, Ruhi Mohta, Shivangi Joshi, Somya Shreya, Sanpreet Singh Sachdev   +5 more
doaj   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

FEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Tooth Multi-Sectioning with the Use of Magnification, for Extraction of a Deeply Impacted Lower Second Molar with Entrapment of the Inferior Alveolar Nerve: Report of a Case

Balkan Journal of Dental Medicine, 2016
Inferior alveolar nerve injury is one of the most serious complications of mandibular molar surgery and may lead to litigation for mal-practice. Entrapment of the inferior alveolar nerve to roots of an impacted mandibular molars is extremely rare.
Tilaveridis Ioannis, Dalambiras Stilianos, Lazaridou Maria, Zouloumis Lambros   +3 more
doaj   +1 more source

Membrane composition and thermodynamic identity as boundaries of life for synthetic cell research

FEBS Letters, EarlyView.
What makes a cell a cell? The boundary of a living cell is not just a wall. Read as a Markov blanket, the membrane separates internal from external states, generating identity and non‐equilibrium order. Can this identity be rebuilt from scratch in a synthetic cell?
Caterina Presutti, Bert Poolman
wiley   +1 more source

There is Still Vision/Hope – Choices of Optical Low Vision Aids (A-Z)

Delhi Journal of Ophthalmology
Low vision aids (LVA) are designed to provide improved visual acuity to a visually impaired patient who cannot be treated by regular refractive corrections or other treatments.
Prasanna Venkatesh Ramesh, Sathyan Parthasarathi, Shruthy Vaishali Ramesh, Aji Kunnath Devadas   +3 more
doaj   +1 more source

The role of miR‐335‐5p in the redifferentiation of BRAF p.V600E thyroid cancers

Molecular Oncology, EarlyView.
The BRAF p.V600E mutation promotes thyroid cancer dedifferentiation and radioiodine resistance. Using a network approach, we identified miR‐335‐5p as a key regulator of BRAF‐mutated thyroid tumors. Restoring miR‐335‐5p increased thyroid‐specific gene expression and iodine uptake in cells and organoids.
Valeria Pecce, Simone Bini, Marialuisa Sponziello, Giorgio Grani, Giulia Fiscon, Paola Paci, Lorenzo Farina, Rosa Falcone, Valentina Maggisano, Sebastiano Filetti, Cosimo Durante, Antonella Verrienti   +11 more
wiley   +1 more source