Results 21 to 30 of about 277,948 (267)

Constructing geometrical models of spherical analogs of the involute of a circle and cycloid

open access: yesEastern-European Journal of Enterprise Technologies, 2023
The common properties of images on a plane and a sphere are considered in the scientific works by scientists-designers of spherical mechanisms. This is due to the fact that the plane and the sphere share common geometric parameters. They include constancy at all points of the Gaussian curve, which has a zero value for a plane and a positive value for a
Andrii Nesvidomin   +9 more
openaire   +3 more sources

ANTI-HOLOMORPHIC INVOLUTIONS AND SPHERICAL SUBGROUPS OF REDUCTIVE GROUPS [PDF]

open access: yesTransformation Groups, 2015
v1:17 pages; v2: 14 pages, minor changes, final ...
openaire   +3 more sources

Spherical Stein manifolds and the Weyl involution [PDF]

open access: yesAnnales de l'Institut Fourier, 2009
We consider an action of a connected compact Lie group on a Stein manifold by holomorphic transformations. We prove that the manifold is spherical if and only if there exists an antiholomorphic involution preserving each orbit. Moreover, for a spherical Stein manifold, we construct an antiholomorphic involution, which is equivariant with respect to the
openaire   +2 more sources

Spherical conjugacy classes and involutions in the Weyl group [PDF]

open access: yesMathematische Zeitschrift, 2007
Let G be a simple algebraic group over an algebraically closed field of characteristic zero or positive odd, good characteristic. Let B be a Borel subgroup of G. We show that the spherical conjugacy classes of G intersect only the double cosets of B in G corresponding to involutions in the Weyl group of G.
openaire   +2 more sources

Spherical Indicatrices of Involute of a Space Curve in Euclidean 3-Space

open access: yesTamkang Journal of Mathematics, 2020
In this work, we studied the properties of the spherical indicatrices of involute curve of a space curve and presented some characteristic properties in the cases that involute curve and evolute curve are slant helices and helices, spherical indicatrices are slant helices and helices and we introduced new representations of spherical indicatrices.
Tunçer, Yılmaz   +2 more
openaire   +2 more sources

Pressure Drop in Capsule Transporting Bends Carrying Spherical Capsules [PDF]

open access: yes, 2012
One of the most important parameters in designing a capsule transporting pipeline is the pressure drop in the pipes carrying capsules and associated pipe fittings such as bends etc.
Ubbi, Kuldip   +3 more
core   +1 more source

Discrete spherical means of directional derivatives and Veronese maps [PDF]

open access: yes, 2011
We describe and study geometric properties of discrete circular and spherical means of directional derivatives of functions, as well as discrete approximations of higher order differential operators.
Alexander Belyaev   +8 more
core   +1 more source

Development of a geometrical model of spherical involute for bevel gears

open access: yes, 2022
Zobni boki stožčastih zobniških gonil, ki temeljijo na sferični evolventi, zagotavljajo idealno ubiranje – ohranjajo konstantno razmerje vrtilnih hitrosti.
Osolnik, Nejc
core  

Chronobiology of Cancer: How Aging Fuels Oncogenesis at the Molecular Level

open access: yesAging and Cancer, EarlyView.
This graphical abstract illustrates the key biological pathways linking aging with cancer development and progression. In the upper left, cumulative exposure to ultraviolet radiation, toxins, and reactive oxygen species (ROS) causes DNA damage and genomic instability, whereas age‐related decline in repair mechanisms, such as ATM/ATR, BER, and NER ...
Anu Singh, Aroonima Misra, Sufian Zaheer
wiley   +1 more source

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