Results 51 to 60 of about 2,662,283 (378)

Intelligent Wireless Capsule Endoscopy for the Diagnosis of Gastrointestinal Diseases

open access: yesDiagnostics, 2023
Through a wireless capsule endoscope (WCE) fitted with a miniature camera (about an inch), this study aims to examine the role of wireless capsule endoscopy (WCE) in the diagnosis, monitoring, and evaluation of GI (gastrointestinal) disorders.
Ibrahim M. Mehedi   +3 more
doaj   +1 more source

The Embedding of Two-Spheres in the Four-Sphere [PDF]

open access: yesTransactions of the American Mathematical Society, 1961
We consider the question of reducing the homeomorphism problem for pairs of topological spaces to the homeomorphism problem for single spaces. Of particular interest is the strength of the invariant X-A of the pair (X, A). In the first chapter we discuss the problem in its general setting. In the second chapter we consider the embedding of n-spheres in
openaire   +4 more sources

Quasisymmetric parametrizations of two-dimensional metric spheres [PDF]

open access: yes, 2001
We study metric spaces homeomorphic to the 2-sphere, and find conditions under which they are quasisymmetrically homeomorphic to the standard 2-sphere. As an application of our main theorem we show that an Ahlfors 2-regular, linearly locally contractible
Bonk, Mario, Kleiner, Bruce
core   +4 more sources

Area of the Intersection between a Sphere and a Cylindrical Plane

open access: yesMathematical and Computational Applications, 2022
A proper understanding of the porous structure of packed beds of spheres is imperative in the analysis and design of the processes involving fluid flow and heat and mass transfer. The radial variation in porosity is of specific interest.
Charl Gabriël Du Toit
doaj   +1 more source

FoxO1 signaling in B cell malignancies and its therapeutic targeting

open access: yesFEBS Letters, EarlyView.
FoxO1 has context‐specific tumor suppressor or oncogenic character in myeloid and B cell malignancies. This includes tumor‐promoting properties such as stemness maintenance and DNA damage tolerance in acute leukemias, or regulation of cell proliferation and survival, or migration in mature B cell malignancies.
Krystof Hlavac   +3 more
wiley   +1 more source

Loop Integrands for Scattering Amplitudes from the Riemann Sphere. [PDF]

open access: yesPhysical Review Letters, 2015
The scattering equations on the Riemann sphere give rise to remarkable formulas for tree-level gauge theory and gravity amplitudes. Adamo, Casali, and Skinner conjectured a one-loop formula for supergravity amplitudes based on scattering equations on a ...
Yvonne Geyer   +3 more
semanticscholar   +1 more source

APPROXIMATION OF THE DISTANCE IN THE SPHERE THROUGH OF THE NUMERICAL SOLUTION OF INITIAL VALUE PROBLEM ASSOCIATED TO GEODESICS

open access: yesSelecciones Matemáticas, 2016
In this paper, we proposes an algorithm to approximate the Geodesic distance between points p and q of sphere, through the numerical solution of initial value problem associated with the system of ordinary differential equations of the geodesics; for ...
Franco Rubio, Ronald León
doaj   +1 more source

Effect of curvature radius and angle on aerodynamic characteristics of a sphere travelling in a branched tube system

open access: yesEngineering Applications of Computational Fluid Mechanics, 2023
Compressible flow through a branched duct and the motion of a sphere through a high blockage ratio pipe are two important and engaging topics throughout the years.
Thi Thanh Giang Le   +6 more
doaj   +1 more source

Harmonic maps from spheres to spheres

open access: yesTopology, 1998
A map between Riemannian manifolds is called harmonic if the divergence of its differential vanishes. The problem of harmonic representatives of homotopy groups of the Euclidean spheres is quite interesting. We refer to [12,46] for the references on some earlier and current works on this problem. Amongst them, we note the following important conclusion:
Chiakuei Peng   +3 more
openaire   +2 more sources

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