Results 31 to 40 of about 119,178,688 (304)

Strict extensions in pointfree topology [PDF]

open access: yes, 2013
Extensions of spaces have been constructed and used since the 19th century, for example, to form the complex sphere from the complex plane by adding a point at in nity.
Gayle Apfel, Apfel, Gayle Renay
core   +1 more source

Golgi enzymes are retrieved from the plasma membrane to the trans‐Golgi network

open access: yesFEBS Letters, EarlyView.
Golgi enzymes are traditionally considered resident proteins retained within the Golgi apparatus. Here, we demonstrate that a subset transiently reaches the cell surface and is subsequently retrieved to the trans‐Golgi network via retrograde transport. Using a nanobody‐based toolkit, we uncover a dynamic trafficking cycle of several Golgi enzymes.
Dominik P. Buser, Tina Junne
wiley   +1 more source

Configuration spaces of equal spheres touching a given sphere: The twelve spheres problem [PDF]

open access: yes, 2016
The problem of twelve spheres is to understand, as a function of \(r \in (0,r_{max}(12)]\), the configuration space of 12 non-overlapping equal spheres of radius r touching a central unit sphere. It considers to what extent, and in what fashion, touching
Robert B. Kusner   +3 more
semanticscholar   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

RoundMi: A quantitative method to analyze mitochondrial morphology in mitotic cells

open access: yesFEBS Open Bio, EarlyView.
RoundMi is a workflow for rapid analysis of mitochondrial morphology in mitotic cells. By combining adaptive preprocessing with automated segmentation and quantification, it enables accurate measurements from single focal plane images, reducing acquisition time and computational demands while remaining compatible with high‐throughput fixed and live ...
Elmira Parvindokht Bararpour   +2 more
wiley   +1 more source

The Topology of Spaces of Polygons [PDF]

open access: yes, 2011
We study the topology of spaces of polygons in Euclidean space, viewed up to translations. The main results concern the structure of the homology groups and of the cohomology rings of the spaces.
FROMM, VIKTOR
core  

On Generalized Continuous Fuzzy Proper Function from a Fuzzy Topological Space to another Fuzzy Topological Space

open access: yesBaghdad Science Journal, 2019
The purpose of this paper is to introduce and study the concepts of fuzzy generalized open sets, fuzzy generalized closed sets, generalized continuous fuzzy proper functions and prove results about these concepts.
Munir A. Al.Khafaje   +1 more
openaire   +5 more sources

Soft Weakly Quasi-Continuous Functions Between Soft Topological Spaces

open access: yesMathematics
As an extension of quasi-continuity in general topology, we define soft quasi-continuity. We show that this notion is equivalent to the known notion of soft semi-continuity. Next, we define soft weak quasi-continuity.
S. Al-Ghour, Dina Abuzaid, Monia Naghi
semanticscholar   +1 more source

Tameness in Fréchet spaces of analytic functions [PDF]

open access: yes, 2016
We investigate tameness in the Fr\'echet spaces O(M) of analytic functions on Stein manifolds M equipped with the compact open topology. Actually we will look into tameness in the more general class of nuclear Fr\'echet spaces with the properties weak DN
A. Aytuna
semanticscholar   +1 more source

\tau*-generalized semi continuous functions in topological spaces

open access: yesInternational Journal of Mathematical Analysis, 2013
In this paper, we introduce new class of functions called τ ∗ -Generalized Semi Continuous functions in topological spaces and study some of its properties and its relationship with some existing functions.
S. Eswaran, N. Nagaveni
openaire   +1 more source

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