Results 91 to 100 of about 29,235,109 (382)
New Bisabosquals from Stachybotrys sp. PH30583 Elicited on Solid Media
Molecules, 2018 Stachybotrys sp. PH30583 cultured in liquid medium only led to one structure type of novel isochroman dimers. Using the one strain-many compounds strategy, the reinvestigation of the metabolites from Stachybotrys sp. PH30583 cultured in rice solid medium
Bao-Hui Ruan +8 more
doaj +1 more source
On identity theorem for real functions [PDF]
arXiv, 2009 Identity theorem for analytic complex functions says that a function is uniquely defined by its values on a set that contains a density point. The paper presents sufficient conditions for classes of real analytic functions that ensures similar property.
arxiv
FEBS Letters, EarlyView.Dimeric pyruvate formate‐lyase cleaves pyruvate using a radical‐based mechanism. G734 serves as a radical storage location, and the radical is transferred to the catalytic C419 residue. Mutation of the C418‐C419 pair causes loss of enzyme activity, but does not impede radical introduction onto G734. Therefore, cis‐ but not trans‐radical transfer occurs
Michelle Kammel +2 more
wiley +1 more source
Operator $k$-tone functions and analytic functional calculus [PDF]
arXiv, 2015 Operator $k$-tone functions on an open interval of the real line, which are higher order extensions of operator monotone and convex functions, are characterized via certain inequalities for the real and imaginary parts of analytic functional calculus by those functions.
arxiv
On the regularity of the maximal function of a BV function [PDF]
arXiv, 2020 We show that the non-centered maximal function of a BV function is quasicontinuous. We also show that \emph{if} the non-centered maximal functions of an SBV function is a BV function, then it is in fact a Sobolev function. Using a recent result of Weigt, we are in particular able to show that the non-centered maximal function of a set of finite ...
arxiv
Evolutionary interplay between viruses and R‐loops
FEBS Letters, EarlyView.Viruses interact with specialized nucleic acid structures called R‐loops to influence host transcription, epigenetic states, latency, and immune evasion. This Perspective examines the roles of R‐loops in viral replication, integration, and silencing, and how viruses co‐opt or avoid these structures.
Zsolt Karányi +4 more
wiley +1 more source
Biotransformation of natural polyacetylene in red ginseng by Chaetomium globosum
Journal of Ginseng Research, 2020 Background: Fermentation has been shown to improve the biological properties of plants and herbs. Specifically, fermentation causes decomposition and/or biotransformation of active metabolites into high-value products.
Bang-Yan Wang +8 more
doaj
Journal of Cheminformatics, 2018 Chemical named entity recognition (NER) is an active field of research in biomedical natural language processing. To facilitate the development of new and superior chemical NER systems, BioCreative released the CHEMDNER corpus, an extensive dataset of ...
Ilia Korvigo +3 more
doaj +1 more source
Spectral methods for nonlinear functionals and functional differential equations [PDF]
arXiv, 2020 We present a rigorous convergence analysis for cylindrical approximations of nonlinear functionals, functional derivatives, and functional differential equations (FDEs). The purpose of this analysis is twofold: first, we prove that continuous nonlinear functionals, functional derivatives and FDEs can be approximated uniformly on any compact subset of a
arxiv
On compactness in functional analysis [PDF]
Transactions of the American Mathematical Society, 1955 The theorem of Arzel& and Ascoli, characterizing conditionally compact subsets of the Banach space C(X) of continuous functions defined on a compact topological space X, is fundamental for much of functional analysis. Of less importance but still of interest is the question of characterizing subsets of C(X) which are conditionally compact in other ...
openaire +1 more source