Results 101 to 110 of about 274,570 (306)

Separation and covering properties of frames

open access: yes, 2009
We present the concept of a frame and the related notion of spatiality. We consider the classical separation axioms in the frame setting and relate these to frame covering properties.
Knudson, Kevin Patrick
core  

Coideals as remainders of groups distinguishing between combinatorial covering properties

open access: yes, 2023
In this paper we construct consistent examples of subgroups of $2^\omega$ with Menger remainders which fail to have other stronger combinatorial covering properties. This answers several open questions asked by Bella, Tokgoz and Zdomskyy (Arch.
Molica Bisci G.   +5 more
core   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

open access: yesFEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill   +4 more
wiley   +1 more source

On ideal sequence covering maps

open access: yesApplied General Topology, 2019
In this paper we introduce the concept of ideal sequence covering map which is a generalization of sequence covering map, and investigate some of its properties.
Sudip Kumar Pal   +2 more
doaj   +1 more source

Chang's model and covering properties

open access: yesAnnals of Pure and Applied Logic, 1989
The author studies the covering properties of the Chang model C (the equivalent of the constructible universe for the infinitary language \({\mathcal L}_{\omega_ 1,\omega_ 1})\) and of the model \(N=\cup \{L(A)\); A countable set of ordinals\(\}\). She shows, e.g., that the failure of the covering property for C is equiconsistent with the existence of ...
openaire   +1 more source

Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function

open access: yesFEBS Open Bio, EarlyView.
We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke   +4 more
wiley   +1 more source

Characterization of the impact of relevant process parameters on the heat transfer and the resulting mechanical properties using multi-phase steel grades [PDF]

open access: yes, 2013
In the field of tailored hot stamping, the HTC has been calculated processing dual phase and complex phase steels, both varying quenching temperature on one part of the tool and contact pressure, in order to achieve tailored properties.
Orlando, Alberto
core  

Negative (and positive) circles in signed graphs: A problem collection

open access: yesAKCE International Journal of Graphs and Combinatorics, 2018
A signed graph is a graph whose edges are labeled positive or negative. The sign of a circle (cycle, circuit) is the product of the signs of its edges. Most of the essential properties of a signed graph depend on the signs of its circles. Here I describe
Thomas Zaslavsky
doaj   +1 more source

Large‐scale bidirectional arrayed genetic screens identify OXR1 and EMC4 as modifiers of αSynuclein aggregation

open access: yesFEBS Open Bio, EarlyView.
Activation of the mitochondrial protein OXR1 increases pSyn129 αSynuclein aggregation by lowering ATP levels and altering mitochondrial membrane potential, particularly in response to MSA‐derived fibrils. In contrast, ablation of the ER protein EMC4 enhances autophagic flux and lysosomal clearance, broadly reducing α‐synuclein aggregates.
Sandesh Neupane   +11 more
wiley   +1 more source

Star-covering properties: Generalized Ψ-spaces, countability conditions, reflection

open access: yes, 2011
We investigate star-covering properties of Ψ-like spaces. We show star-Lindelöfness is reflected by open perfect mappings.
Aiken, L.P., L.P. Aiken
core   +1 more source

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