Results 31 to 40 of about 16,783,451 (339)

A Critical Review on Soil Gas Analysis: Modern Technologies and Problems

open access: yesAgronomy
In this review article, the main techniques for spectroscopic studies of gases in field conditions are considered. The issues related to the study of gas emissions from soils and the determination of their concentrations are analysed.
Alexander G. Bannov   +4 more
doaj   +1 more source

On a Functional Equation Associated with (a,k)-Regularized Resolvent Families

open access: yesAbstract and Applied Analysis, 2012
Let a∈Lloc1(ℝ+) and k∈C(ℝ+) be given. In this paper, we study the functional equation R(s)(a*R)(t)-(a*R)(s)R(t)=k(s)(a*R)(t)-k(t)(a*R)(s), for bounded operator valued functions R(t) defined on the positive real line ℝ+.
Carlos Lizama, Felipe Poblete
doaj   +1 more source

Functional Mechanism of Ginsenoside Compound K on Tumor Growth and Metastasis

open access: yesIntegrative Cancer Therapies, 2022
Ginsenosides, as the most important constituents of ginseng, have been extensively investigated in cancer chemoprevention and therapeutics. Among the ginsenosides, Compound K (CK), a rare protopanaxadiol type of ginsenoside, has been most broadly used ...
Jinlong Liu PhD   +8 more
doaj   +1 more source

Consistency of the $k$-nearest neighbors rule for functional data

open access: yesComptes Rendus. Mathématique, 2023
The problem of nonparametric classification by $k$-nearest neighbors rule in a general metric space will be considered. Consistency and strong consistency of the classifier will be established under mild conditions.
Younso, Ahmad
doaj   +1 more source

CDD: a Conserved Domain Database for the functional annotation of proteins

open access: yesNucleic Acids Res., 2010
NCBI’s Conserved Domain Database (CDD) is a resource for the annotation of protein sequences with the location of conserved domain footprints, and functional sites inferred from these footprints.
Aron Marchler-Bauer   +26 more
semanticscholar   +1 more source

Presenilins Upregulate Functional K+Channel Currents in Mammalian Cells

open access: yesNeurobiology of Disease, 1998
Mutations in presenilin 1 (PS-1) and presenilin 2 (PS-2) have been linked to early onset, autosomal dominant Alzheimer's disease. Neither the normal function(s) of the presenilins nor their role(s) in mediating the devastating neurological and ...
Sacha A. Malin   +4 more
doaj   +1 more source

K-functional and weighted moduli of smoothness

open access: yesJournal of Approximation Theory, 1990
Les auteurs mettent en évidence des équivalents de la fonctionnelle K, et du module de régularité \(\omega^ r_{\phi}(f,t)_{w,p}\), qui interviennent dans la théorie de l'interpolation, pour des espaces de Sobolev avec poids sur un intervalle de \({\mathbb{R}}\), \(1\leq ...
Ditzian, Z, Totik, V
openaire   +1 more source

Fractional operators with generalized Mittag-Leffler k-function [PDF]

open access: yesAdvances in Difference Equations, 2019
AbstractIn this paper, our main aim is to deal with two integral transforms involving the Gauss hypergeometric functions as their kernels. We prove some composition formulas for such generalized fractional integrals with Mittag-Lefflerk-function. The results are established in terms of the generalized Wright hypergeometric function. The Euler integralk-
Shahid Mubeen, Rana Safdar Ali
openaire   +3 more sources

Psychosocial Outcomes in Patients With Endocrine Tumor Syndromes: A Systematic Review

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction The combination of disease manifestations, the familial burden, and varying penetrance of endocrine tumor syndromes (ETSs) is unique. This review aimed to portray and summarize available data on psychosocial outcomes in patients with ETSs and explore gaps and opportunities for future research and care.
Daniël Zwerus   +6 more
wiley   +1 more source

On Kantorovich variant of Brass-Stancu operators

open access: yesDemonstratio Mathematica
In this study, we deal with Kantorovich-type generalization of the Brass-Stancu operators. For the sequence of these operators, we study Lp{L}^{p}-convergence and give some upper estimates for the Lp{L}^{p}-norm of the approximation error via first-order
Bodur Murat   +2 more
doaj   +1 more source

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