Results 61 to 70 of about 71,980 (237)

Impact of image preprocessing on dermatological OCTA vessel segmentation: a DERMA-OCTA study

Journal of Biomedical Optics
Optical coherence tomography angiography (OCTA) offers dye-free, three-dimensional views of skin microvasculature, yet progress in developing reliable and quantitative solutions for vessel architecture analysis is slowed by heterogeneous preprocessing practices, scarce annotated data, and limited evaluation metrics.We assess how typical OCTA ...
Rotunno, Giulia, Salvi, Massimo, Deinsberger, Julia, Krainz, Lisa, Bugyi, Lukasz, Weber, Benedikt, Sinz, Christoph, Kittler, Harald, Schmetterer, Leopold, Drexler, Wolfgang, Liu, Mengyang, Meiburger, Kristen M.   +11 more
openaire   +3 more sources

Fluorescent Diarylethenes With Polar Groups: Synthesis, Spectra, and Optical Microscopy Applications

Chemistry – A European Journal, EarlyView.
Blinking green and flashing red: photo‐switchable and photo‐activatable probes emitting green and red light were prepared and applied as bioconjugates in super‐resolution optical microscopy. ABSTRACT The use of photoactivatable fluorescent diarylethenes (fDAEs) in biology‐related light microscopy has been restricted by the lack of probes having freely ...
Kakishi Uno, Sven Nagorny, Ayse Aktalay, Dojin Kim, Mariano L. Bossi, Vladimir N. Belov, Stefan W. Hell   +6 more
wiley   +1 more source

Elusiveness of bishomoaromaticity in anionic systems: the bicyclo[3.2.1]octa-3,6-dien-2-yl anion [PDF]

, 1981
This article does not have an ...
Chandrasekhar, Jayaraman, Kaufmann, Elmar, Mayr, Herbert, Schleyer, Paul v. R.   +3 more
core   +1 more source

DERMA-OCTA: A Comprehensive Dataset and Preprocessing Pipeline for Dermatological OCTA Vessel Segmentation

Scientific Data
Optical coherence tomography angiography (OCTA) has emerged as a promising tool for non-invasive vascular imaging in dermatology. However, the field lacks standardized methods for processing and analyzing these complex images, as well as sufficient annotated datasets for developing automated analysis tools.
Giulia Rotunno, Massimo Salvi, Julia Deinsberger, Lisa Krainz, Benedikt Weber, Christoph Sinz, Harald Kittler, Leopold Schmetterer, Wolfgang Drexler, Mengyang Liu, Kristen M. Meiburger   +10 more
openaire   +3 more sources

Octa-arginine and Octa-lysine Promote Cell Adhesion through Heparan Sulfate Proteoglycans and Integrins

Biological and Pharmaceutical Bulletin, 2022
Octa-arginine (R8) has been extensively studied as a cell-penetrating peptide. R8 binds to diverse transmembrane heparan sulfate proteoglycans (HSPGs), including syndecans, and is internalized by cells. R8 is also reported to bind to integrin β1. In this study, we evaluated the biological activities of R8 and octa-lysine (K8), a peptide similar to R8 ...
Yuji, Yamada, Toru, Onda, Keisuke, Hamada, Yamato, Kikkawa, Motoyoshi, Nomizu   +4 more
openaire   +3 more sources

Dynamic Reactivity: Reversible Reaction of a Phosphinine–Borane Adduct With Water and Double Hydrophosphination

Chemistry – A European Journal, Volume 32, Issue 19, 22 May 2026.
A phosphinine–borane Lewis pair shows a dynamic mode of water addition, revealing reversible and regioselective transformations that expand the reactivity of aromatic phosphorus heterocycles and open pathways to stimuli‐responsive systems for catalysis, small‐molecule activation, and functional materials.
Samantha Frank, Ádám Horváth, Júlia Boglárka Horváth, Chiara Interdonato, Moritz J. Ernst, Priya Kumar, Zoltán Benkő, Christian Müller   +7 more
wiley   +1 more source

Recent Advances in Imaging Polypoidal Choroidal Vasculopathy with Swept-Source Optical Coherence Tomography Angiography

Diagnostics, 2023
The gold standard for polypoidal choroidal vasculopathy (PCV) diagnosis is indocyanine green angiography (ICGA), but optical coherence tomography angiography (OCTA) has shown promise for PCV imaging in recent years.
Xingwang Gu, Xinyu Zhao, Qing Zhao, Yuelin Wang, Youxin Chen   +4 more
doaj   +1 more source

A Novel Heterometallic Ring {Cr5Ni3} and New {Cr6Co2} and {Cr6Zn2} Rings

Chemistry – A European Journal, EarlyView.
A novel heterometallic ring containing five Cr(III) and three Ni(II) centers is reported. It forms an octagon and has a single isomer, as revealed by a combination of magnetic and EPR studies and collision‐induced dissociation mass spectrometry. ABSTRACT A new heterometallic ring, [Me4N][(Me4N)2Cr5Ni3F8(BTFB)16] (BTFB = 3,5‐bis(trifluoromethyl)benzoate)
Abdulelah Alsuhaymi, Niklas Geue, Adam Brookfield, Grigore A. Timco, Selena J. Lockyer, Gareth D. Smith, George F. S. Whitehead, Perdita E. Barran, David Collison, Richard E. P. Winpenny   +9 more
wiley   +1 more source

A Swept source optical coherence tomography angiography study: Imaging artifacts and comparison of non-perfusion areas with fluorescein angiography in diabetic macular edema.

PLoS ONE, 2021
PurposeSwept Source Optical coherence tomography angiography (SS-OCTA) is a novel technique to visualize perfusion and vascular changes like ischemia in patients with diabetic retinopathy.
Dominika Podkowinski, Sophie Beka, Anna-Sophie Mursch-Edlmayr, Rupert W Strauss, Lukas Fischer, Matthias Bolz   +5 more
doaj   +1 more source

Quantum oscillations in adsorption energetics of atomic oxygen on Pb(111) ultrathin films: A density-functional theory study

, 2011
Using first-principles calculations, we have systematically studied the quantum size effects of ultrathin Pb(111) films on the adsorption energies and diffusion energy barriers of oxygen atoms.
Bo Sun, Henrich V. E., Ping Zhang, Wenchuan Wang, Wyckoff R. W. G., Xiaohong Shao, Yu Yang, Ziyu Hu   +7 more
core   +1 more source