Results 91 to 100 of about 221,597 (311)

Positive self-commutators of positive operators

Positivity
Abstract We consider a positive operator A on a Hilbert lattice such that its self-commutator $$C = A^* A - A A^*$$ C = A ∗ A
Drnovšek, Roman, Kandić, Marko
openaire   +4 more sources

Design and analysis strategies for robust microbiome ageing research

FEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik, İsmail Güderer, Yi Wang, Tayyaba Alvi, Prasoon Pandey, Handan Melike Dönertaş   +5 more
wiley   +1 more source

TRAIL‐PEG‐Apt‐PLGA nanosystem as an aptamer‐targeted drug delivery system potential for triple‐negative breast cancer therapy using in vivo mouse model

Molecular Oncology, EarlyView.
Aptamers are used both therapeutically and as targeting agents in cancer treatment. We developed an aptamer‐targeted PLGA–TRAIL nanosystem that exhibited superior therapeutic efficacy in NOD/SCID breast cancer models. This nanosystem represents a novel biotechnological drug candidate for suppressing resistance development in breast cancer.
Gulen Melike Demirbolat, Aslihan Kucuk, Omer Erdogan, Samed Ozer, Bensu Kozan, Tugba Cuceli, Erkan Gumus, Evrim Cevik, Ozge Cevik   +8 more
wiley   +1 more source

On positive operator-valued continuous maps [PDF]

, 1996
summary:In the paper the geometric properties of the positive cone and positive part of the unit ball of the space of operator-valued continuous space are discussed.
Grzaślewicz, Ryszard
core  

On Lipschitz Perturbations of a Self-Adjoint Strongly Positive Operator

Journal of Function Spaces and Applications, 2013
In this paper we study semilinear equations of the form Au+λF(u)=f, where A is a linear self-adjoint operator, satisfying a strong positivity condition, and F is a nonlinear Lipschitz operator.
Dinu Teodorescu, N. Hussain
doaj   +1 more source

Weighted arithmetic–geometric operator mean inequalities

Journal of Inequalities and Applications, 2018
In this paper, we refine and generalize some weighted arithmetic–geometric operator mean inequalities due to Lin (Stud. Math. 215:187–194, 2013) and Zhang (Banach J. Math. Anal. 9:166–172, 2015) as follows: Let A and B be positive operators.
Jianming Xue
doaj   +1 more source

Subtype‐specific enhancer RNAs define transcriptional regulators and prognosis in breast cancers

Molecular Oncology, EarlyView.
This study employed machine learning methodologies to perform the subtype‐specific classification of RNA‐seq data sets, which are mapped on enhancers from TCGA‐derived breast cancer patients. Their integration with gene expression (referred to as ProxCReAM eRNAs) and chromatin accessibility profiles has the potential to identify lineage‐specific and ...
Aamena Y. Patel, Peyman Zarrineh, Nathnael T. Tuffa, Jigar H. Sheth, Sumitra Mohan, Mudassar Iqbal, Sankari Nagarajan   +6 more
wiley   +1 more source

On an approximating linear positive operator of Cheney-Sharma

Journal of Numerical Analysis and Approximation Theory, 1997
Not available.
D. D. Stancu, C. Cismașiu
doaj   +2 more sources

Sector operator inequalities involving positive linear maps

Journal of Inequalities and Applications
In this note, we prove the pth power ( p ≥ 2 $p\geq 2$ ) of two new sector operator inequalities for positive linear maps which are due to Bedrani et al. (Positivity 25:1601-1629, 2021) and Nasiri (Filomat 38:3429-3438, 2024), respectively.
Jiqin Chen, Xiaohui Fu, Qi Song, Chuchu Tang   +3 more
doaj   +1 more source

First Experiments on 3D Plasma Calculations Using Positive Maxwellian Operator [PDF]

EPJ Web of Conferences
A new form of time-harmonic Maxwell’s equations [1] based on the standard formulation is used for the numerical modelling of RF fields in non-uniform plasmas without an external magnetic field.
Moiseenko Volodymyr E., Skhabytskyi Nikita, Martseniuk Yurii   +2 more
doaj   +1 more source