Results 81 to 90 of about 16,590,082 (290)

Fixed Point Results for G-α-Contractive Maps with Application to Boundary Value Problems

open access: yesThe Scientific World Journal, 2014
We unify the concepts of G-metric, metric-like, and b-metric to define new notion of generalized b-metric-like space and discuss its topological and structural properties.
Nawab Hussain   +2 more
doaj   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

G-β-ψ-contractive type mappings in G-metric spaces [PDF]

open access: yesFixed Point Theory and Applications, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Alghamdi, Maryam A., Karapinar, Erdal
openaire   +1 more source

On Common Fixed Points Of Non-Lipschitzian Semigroups İn A Hyperbolic Metric Space Endowed With A Graph

open access: yes, 2023
Bu yayının lisans anlaşması koşulları tam metin açık erişimine izin vermemektedir.In this paper, the existence theorem of a common fixed point for a semigroup of contraction mappings defined on a metric space endowed with a graph G has been proved. Also,
Uddin, I   +3 more
core   +1 more source

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

open access: yesFEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui   +4 more
wiley   +1 more source

Remarks on contractive type mappings

open access: yesFixed Point Theory and Applications, 2017
We present an analog of Banach’s fixed point theorem for C J M $CJM$ contractions in preordered metric spaces. These results substantially extend theorems of Ran and Reurings’ (Proc. Am. Math. Soc.
Jarosław Górnicki
doaj   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

open access: yesFEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil   +3 more
wiley   +1 more source

UNIFORM CONTINUITY AND CAUCHY CONTINUITY IN G-METRIC SPACES [PDF]

open access: yes, 2017
Kara, Emrah Evren/0000-0002-6398-4065WOS: 000416101000006In this paper, we introduce the notions of G-uniform continuity and G-Cauchy continuity of a function defined from one generalized metric space to another generalized metric space.
İlkhan, Merve, Kara, Emrah Evren
core   +2 more sources

Symmetry breaking via internal geometry

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
Gauge theories commonly employ complex vector-valued fields to reduce symmetry groups through the Higgs mechanism of spontaneous symmetry breaking.
Andrew Talmadge
doaj   +1 more source

Metastatic niche shaped by host factors influences disseminated cancer cell fate

open access: yesFEBS Letters, EarlyView.
Metastasis is shaped not only by cancer cells but also by the environments they encounter. This review explores how factors such as aging, diet, the microbiome, lifestyle, and environmental exposures remodel organ‐specific niches in the lung, liver, bone, and brain, influencing where metastatic cells survive, remain dormant, or grow, and ultimately ...
Gwennan Delyth Ward   +2 more
wiley   +1 more source

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