Results 41 to 50 of about 137,354 (293)

A Comprehensive Study of the Anatomical Variations of the Circle of Willis in Adult Human Brains [PDF]

Journal of Clinical and Diagnostic Research, 2013
Background: Cerebrovascular diseases such as stroke, aneurysms and arterio-venous malformations are very much prevalent in our country. Circle of Willis, as an anastomotic polygon at the base of the brain forms an important collateral network to ...
S. Iqbal
doaj   +1 more source

Epitaxial Interface‐Driven Photoresponse Enhancement in Monolayer WS2–MoS2 Lateral Heterostructures

Advanced Functional Materials, EarlyView.
Surface potential distribution image, along with the derived electric field distribution across the interface, reveals that the electric field reaches its peak at the interface. Additionally, the spectral response of the heterointerface exhibits higher and broader features compared to its bare counterparts.
Pargam Vashishtha, Clara Kofler, Ajay Kumar Verma, Sindhu Priya Giridhar, Jonathan O. Tollerud, Nethmi S. L. Dissanayake, Tanish Gupta, Manoj Sehrawat, Vishnu Aggarwal, Edwin L.H. Mayes, Billy J. Murdoch, Deepak Sharma, Taimur Ahmed, Jani Kotakoski, Jeffrey A. Davis, Yuerui Lu, Govind Gupta, Irfan H. Abidi, Sumeet Walia   +18 more
wiley   +1 more source

Synergistic Two‐Color Photochemical Polymer Network Formation and Lithography

Angewandte Chemie, EarlyView.
Two photoswitches, able to respond to disparate wavelengths, are integrated into multi‐functional polymer architectures to form a photoresist that responds to curing upon irradiation with two distinct monochromatic colors of light, enabling two‐color lithography.
Jan Hobich, Xingyu Wu, Florian Feist, Willie Scheibel, Natalia Herdt, Paul Somers, Eva Blasco, Hatice Mutlu, Christopher Barner‐Kowollik   +8 more
wiley   +2 more sources

The association of the circle of Willis anomaly and risk of stroke in patients with carotid artery disease

Arquivos de Neuro-Psiquiatria
The circle of Willis is an important collateral system that maintains perfusion to the stenotic area from the contralateral carotid and basilar artery to the region of reduced brain perfusion.
Eylem Özaydın Göksu, Pınar Koç, Elif Küçükseymen, Ali Ünal, Fatma Genç, Elif Sarıönder Gencer, Aylin Yaman   +6 more
doaj   +1 more source

Examination of Structural Variations of the Circle of Willis by 3D Time-of-Flight Magnetic Resonance Angiography

Frontiers in Neuroscience, 2020
Objectives: To explore structural variations of the circle of Willis using three-dimensional time-of-flight magnetic resonance angiography (3D-TOF-MRA), and to compare this modality with digital subtraction angiography (DSA).Methods: A total of 819 ...
Jing Li, Jue Wang, Xiao-er Wei, Yu-wu Zhao, Feng Wang, Yue-hua Li   +5 more
doaj   +1 more source

Attempt to establish an experimental animal model of moyamoya disease using immuno-embolic material--histological changes of the arterial wall resulting from immunological reaction in cats. [PDF]

, 2003
In this study, we investigated the relationship between intimal thickening of the internal carotid artery (ICA) and immunological reaction, and between occlusion of the ICA and development of basal collateral vessels in moyamoya disease.
Kamata, Ichiro, Ohmoto, Takashi, Terai, Yoshinori   +2 more
core   +1 more source

Self‐Assembly of a Tripodal Terpyridine Based Ligand with Luminescent Lanthanide Ions in Solution and Soft Material

Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
The tripodal terpyridine‐1,3,5‐benzene tricarboxamide (BTA) ligand 1 is employed in the self‐assembly formation of novel luminescent materials using a range of lanthanide ions. In the polar protic solution, the results from the photophysical measurements are assessed using nonlinear regression analysis, while the functional material properties of the ...
Jason M. Delente, Oxana Kotova, Niamh Willis‐Fox, John E. O'Brien, Brendan Twamley, Ronan Daly, Thorfinnur Gunnlaugsson   +6 more
wiley   +1 more source

Configuration of Circle of Willis and Its Clinical Significance

Journal of Bahria University Medical and Dental College, 2018
In occlusive vascular brain diseases, the structure of the circle of Willis is of immense importance. A high percentage of variations have been reported in the arteries forming circle of Willis. These have profound clinical implications.
Aisha Hassan Brohi, Kevin Joseph Jerome Borges, Gulraiz Hikmat Yar, Syed Nudrat Nawaid Shah, Nuzhat Hassan   +4 more
doaj   +1 more source

Frequency of occurrence of numbers in the World Wide Web [PDF]

, 2005
The distribution of numbers in human documents is determined by a variety of diverse natural and human factors, whose relative significance can be evaluated by studying the numbers' frequency of occurrence.
Albert, Argollo de Menezes, Argollo de Menezes, Bak, Barabási, Benford, Cowan, Dorogovtsev, Huberman, Huberman, J.F.F. Mendes, J.G. Oliveira, Landau, Mandelbrot, Miller, Newcomb, Pietronero, Raimi, Raimi, S.N. Dorogovtsev, Simon, Willis, Yule, Zipf   +23 more
core   +1 more source

Laser Ultrasound Super‐Resolution Imaging for Multi‐Parametric Non‐Invasive Volumetric Characterization of Brain Cancer

Advanced Science, EarlyView.
Laser ultrasound super‐resolution imaging (LUSSI) leverages laser‐generated ultrasound for functional 3D transcranial imaging of brain tumor vasculature. Combined with optoacoustic tomography, it is demonstrated in a glioblastoma model, revealing structural abnormalities, compressed vessels, hemorrhages, and hypoxic regions.
Daniil Nozdriukhin, Yi Chen, Shuxin Lyu, Daniel Razansky, Xosé Luís Deán‐Ben   +4 more
wiley   +1 more source