Results 61 to 70 of about 134,491 (310)

Fixed Points for Pseudocontractive Mappings on Unbounded Domains

Fixed Point Theory and Applications, 2010
We give some fixed point results for pseudocontractive mappings on nonbounded domains which allow us to obtain generalizations of recent fixed point theorems of Penot, Isac, and Németh. An application to integral equations is given.
E. Llorens-Fuster, Jesús García-Falset   +1 more
doaj   +2 more sources

Conducive integral domains

Journal of Algebra, 1984
This article introduces the concept of a conducive domain, that is, an integral domain each of whose overrings, apart from the quotient field, has nonzero conductor. The principal examples of conductive domains are all D\(+M\) constructions and all (pseudo-)valuation domains.
Dobbs, David E, Fedder, Richard
openaire   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

The role of histone modifications in transcription regulation upon DNA damage

FEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

AN INTRODUCTION TO THE THEORY OF DIFFERENTIABLE STRUCTURES ON INFINITE INTEGRAL DOMAINS [PDF]

Journal of Sciences, Islamic Republic of Iran, 1990
A special class of differentiable functions on an infinite integral domain which is not a field is introduced.
doaj  

On singular integral equations with variable limits of integration

Қарағанды университетінің хабаршысы. Математика сериясы, 2019
The wide range of problems of mathematical physics is reduced to a special Volterra integral equation of the second kind or to integral equations with variable limits of integration.
D.M. Akhmanova, K.E. Kervenev, A.M. Baltabayeva   +2 more
doaj   +1 more source

Integration of circadian and hypoxia signaling via non‐canonical heterodimerization

FEBS Letters, EarlyView.
CLOCK, BMAL1, and HIFs are basic helix‐loop‐helix and Per‐Arnt‐Sim domain (bHLH‐PAS) proteins, which function as transcription factors. bHLH‐PAS proteins are designated in two classes. Many class I proteins are regulated by environmental signals via their PAS domains, but such signals have not been identified for all.
Sicong Wang, Katja A. Lamia
wiley   +1 more source

Integral Closures of Noetherian Integral Domains as Intersections [PDF]

Proceedings of the American Mathematical Society, 1995
Let \(A\) be a noetherian integral domain, \(\overline A\) its integral closure, and let \({\mathcal G}\) be the set of prime ideals \(P\) of \(A\) with height\((P) \leq 1\). The author provides three equivalent conditions for the equality \(\overline A = \bigcap \overline A_P\), \(P \in {\mathcal G}\). For instance, equality holds iff \(\bigcap A_P\),
openaire   +1 more source

Substrate specificity of Burkholderia pseudomallei multidrug transporters is influenced by the hydrophilic patch in the substrate‐binding pocket

FEBS Letters, EarlyView.
Multidrug transporters BpeB and BpeF from the Gram‐negative pathogen Burkholderia pseudomallei have a hydrophilic patch in their substrate‐binding pocket. Drug susceptibility tests and growth curve analyses using an Escherichia coli recombinant expression system revealed that the hydrophilic patches of BpeB and BpeF are involved in the substrate ...
Ui Okada, Satoshi Murakami
wiley   +1 more source

Accurate Nonstandard Path Integral Models for Arbitrary Dielectric Boundaries in 2-D NS-FDTD Domains

Sensors
An efficient path integral (PI) model for the accurate analysis of curved dielectric structures on coarse grids via the two-dimensional nonstandard finite-difference time-domain (NS-FDTD) technique is introduced in this paper.
Tadao Ohtani, Yasushi Kanai, Nikolaos V. Kantartzis   +2 more
doaj   +1 more source