Results 31 to 40 of about 86,297 (272)
The synthesis of a symmetrically substituted α-octa(isopentoxy)anthralocyanine [PDF]
, 1997 α-Octa(isopentoxy)anthralocyanine has been synthesized and is found to have an unprecedented low-energy Q-band absorption and a low first oxidation ...
Bedworth, Peter V. +2 more
core +1 more source
OCTA 2006: the unfulfilled promise [PDF]
Trends in Organized Crime, 2007 “I am delighted to present the public version of the first European Union’s Organised Crime Threat Assessment (OCTA). The OCTA is a core product of the intelligence led policing concept and its drafting is one of Europol’s top priorities in 2006.” With these words the director of EUROPOL, Mr.
openaire +2 more sources
Optical Coherence Tomography Angiography of the Optic Disc; an Overview. [PDF]
, 2017 Different diseases of the optic disc may be caused by or lead to abnormal vasculature at the optic nerve head. Optical coherence tomography angiography (OCTA) is a novel technology that provides high resolution mapping of the retinal and optic disc ...
Akil, Handan +3 more
core +3 more sources
International Journal of Ophthalmology, 2022 AIM To compare ultra-widefield (24×20 mm2) swept-source optical coherence tomography angiography (SS-OCTA) and fluorescein angiography (FA) in the evaluation of diabetic retinopathy (DR) lesions.
Q. Zeng +5 more
semanticscholar +1 more source
The Metallacyclopentane-Olefin Interchange Reaction [PDF]
, 1977 Tris(triphenylphosphine)tetramethylenenickel(II) and biscyclopentadienyltetramethylenetitanium, prepared from the reaction of a 1,4-dilithiobutane and the transition metal dihalides react with olefins to produce substituted metallacyclopentanes; the ...
Grubbs, Robert H., Miyashita, Akira
core +1 more source
Octa(3-chloroammoniumpropyl) octasilsesquioxane [PDF]
Applied Organometallic Chemistry, 1999 The octahydrochloride salt of octa(3-aminopropyl)octasilsesquioxane can be isolated in 30% yields by controlled hydrolytic condensation of 3-aminopropyltriethoxysilane in strongly acidic methanol. The analytically pure product can be filtered from the reaction solution.
Gravel, M. -C. +3 more
openaire +1 more source
Life, 2021 Preclinical Alzheimer’s disease (AD) includes cognitively healthy subjects with at least one positive biomarker: reduction in cerebrospinal fluid Aβ42 or visualization of cerebral amyloidosis by positron emission tomography imaging.
I. López-Cuenca +8 more
semanticscholar +1 more source
Sam-Octa: Prompting Segment-Anything for Octa Image Segmentation
Biomedical Signal Processing and ControlSegmenting specific targets or biomarkers is necessary to analyze optical coherence tomography angiography (OCTA) images. Previous methods typically segment all the targets in an OCTA sample, such as retinal vessels (RVs). Although these methods perform well in accuracy and precision, OCTA analyses often focusing local information within the images ...
Xinrun Chen +4 more
openaire +3 more sources
Deep-OCTA: Ensemble Deep Learning Approaches for Diabetic Retinopathy Analysis on OCTA Images
, 2023 The ultra-wide optical coherence tomography angiography (OCTA) has become an important imaging modality in diabetic retinopathy (DR) diagnosis. However, there are few researches focusing on automatic DR analysis using ultra-wide OCTA. In this paper, we present novel and practical deep-learning solutions based on ultra-wide OCTA for the Diabetic ...
Hou, Junlin +5 more
openaire +2 more sources
Applied Sciences, 2021 Optical coherence tomography angiography (OCTA) is a promising technology for the non-invasive imaging of vasculature. Many studies in literature present automated algorithms to quantify OCTA images, but there is a lack of a review on the most common ...
K. Meiburger +4 more
semanticscholar +1 more source