Results 61 to 70 of about 137,386 (200)

Revealing the state space of turbulent pipe flow by symmetry reduction

open access: yes, 2012
Symmetry reduction by the method of slices is applied to pipe flow in order to quotient the stream-wise translation and azimuthal rotation symmetries of turbulent flow states.
A. P. Willis   +8 more
core   +1 more source

Average dimensions of the vessels at the base of the brain and the embryological basis of its variations

open access: yesNational Journal of Clinical Anatomy, 2013
Background and aims: The cerebral circulation is constantly maintained by the anastomotic circle of Willis which is often anomalous in more than 50% of the normal adult brains. These anomalies increase the risk of the stroke and transient ischemic attack
S Iqbal
doaj   +1 more source

Data on vessel wall thickness measurements of intracranial arteries derived from human circle of Willis specimens

open access: yesData in Brief, 2018
In this article, we report data on vessel wall thickness parameters derived from different arterial segments of the circle of Willis and its primary branches in patients with and without cerebrovascular disease.
Anita A. Harteveld   +10 more
doaj   +1 more source

Cerebral Artery Diameter in Inbred Mice Varies as a Function of Strain

open access: yesFrontiers in Neuroanatomy, 2018
Many strains of mice are utilized in mouse models of cerebrovascular diseases. Variations in vascular anatomy between these strains has been documented and may influence the phenotype in stroke models.
Baogang Qian   +6 more
doaj   +1 more source

Numerical simulation of the blood flow behavior in the circle of Willis [PDF]

open access: yesBioImpacts, 2014
Introduction: This paper represents the numerical simulation of blood flow in the circle of Willis (CoW). Circle of Willis is responsible for the oxygenated blood distribution into the cerebral mass.
Razavi Seyyed Esmail, Sahebjam Rana
doaj   +1 more source

Morphometric analysis of Willis circle arteries

open access: yesArchives of Pharmacy Practice, 2013
Introduction: Willis arterial circle (circulus arteriosus cerebri Willisi) is the most important part of the collateral circulatory system of the brain. It functions in normal and pathological situations such as valvular mechanism and thus allows optimal
Alma Voljevica   +3 more
doaj   +1 more source

Chromatin Conformation Links Putative Enhancers in Intracranial Aneurysm–Associated Regions to Potential Candidate Genes

open access: yesJournal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2019
Background We previously showed that intracranial aneurysm (IA)–associated single‐nucleotide polymorphisms are enriched in promoters and putative enhancers identified in the human circle of Willis, on which IAs develop, suggesting a role for promoters ...
Melanie D. Laarman   +6 more
doaj   +1 more source

The Incidence of Berry Aneurysm in the Iranian Population: An Autopsy Study [PDF]

open access: yes
Intracranial berry aneurysms are the most common kind of aneurysms in the brain, and are caused by head trauma in 1% of cases. They may remain asymptomatic for a long time or may rupture and cause intracranial hemorrhage.
افشاریان, تهمینه   +3 more
core  

Switching off the magnetic exchange coupling by quantum resonances

open access: yes, 2012
We clarify the role of quantum-well states in magnetic trilayer systems from majority carrier in the ferromagnetic and all carriers in the antiferromagnetic configurations.
Chang, Ching-Hao, Hong, Tzay-Ming
core   +1 more source

Topology‐aware anatomical segmentation of the Circle of Willis: HUNet unveils the vascular network

open access: yesIET Image Processing
This research investigates the Circle of Willis, a critical vascular structure vital for cerebral blood supply. A modified novel dual‐pathway multi‐scale hierarchical upsampling network (HUNet) is presented, tailored explicitly for accurate segmentation ...
Md. Shakib Shahariar Junayed   +4 more
doaj   +1 more source

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