Results 51 to 60 of about 80,117 (291)

Quadratic forms and singularities of genus one or two

open access: yes, 2011
38 pages, 32 figuresInternational audienceWe study singularities obtained by the contraction of the maximal divisor in compact (non-kaehlerian) surfaces which contain global spherical shells.
Dloussky, Georges
core   +3 more sources

The Cheshire Cap [PDF]

open access: yes, 2014
A key role in black hole dynamics is played by the inner horizon; most of the entropy of a slightly nonextremal charged or rotating black hole is carried there, and the covariant entropy bound suggests that the rest lies in the region between the inner ...
Martinec, Emil J.
core   +2 more sources

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

On the Configuration Space of Gauge Theorie

open access: yes, 1994
We investigate the structure of the configuration space of gauge theories and its description in terms of the set of absolute minima of certain Morse functions on the gauge orbits.
Alvarez-Gaumé   +32 more
core   +2 more sources

Cylindrical, spherical and toroidal layering of smectic C liquid crystals [PDF]

open access: yes, 2001
This article examines static solutions to the smectic C continuum equations of Leslie et al.(1) for a variety of layer geometries. In particular it is shown that valid molecular configurations exist for cylindrical, spherical and toroidal layers ...
McKay, Geoff
core   +2 more sources

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

open access: yesFEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

并联机构运动分岔与稳定性分析

open access: yesJixie chuandong, 2008
At singularities, the parallel manipulator will have more than one the motion trends. So the parallel manipulator will lose control. Based on the bifurcation characteristics of a parallel manipulator at singularities, a new method to estimate the losing ...
郭瑞琴
doaj  

SOME MORE ON LOGARITHMIC SINGULARITY INTEGRATION IN BOUNDARY ELEMENT METOD

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
The accuracy of calculations of integrals with logarithmic singularities for two methods, namely the method of ignoring singularities and the method of subtraction (consisting in separating the singular part from the remaining non-singular), are ...
Tomasz Rymarczyk, Jan Sikora
doaj   +1 more source

Rotating regular black holes

open access: yes, 2013
The formation of spacetime singularities is a quite common phenomenon in General Relativity and it is regulated by specific theorems. It is widely believed that spacetime singularities do not exist in Nature, but that they represent a limitation of the ...
Bambi, Cosimo, Modesto, Leonardo
core   +1 more source

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