Results 171 to 180 of about 2,953 (263)

High Sensitivity Cardiac Troponin I Detection via MP‐Locked Aptamer and Multimeric DNAzyme‐Coupled Hyperbranched Hybridization Chain Reaction

open access: yesSmall, EarlyView.
We report a magnetic particle anchored locked aptamer platform integrated with hyperbranched HCR and DNAzyme amplification for enzyme‐free, ultrasensitive detection of cardiac troponin I. The assay achieves a 0.25 ng/L detection limit within 25 minutes and enables cross‐species MI detection, with machine learning classification reaching 90% accuracy ...
Sayantan Tripathy   +9 more
wiley   +1 more source

Acid Resistant and Highly Silver Selective Membranes Based on Charged Nanoporous 2D‐Materials

open access: yesSmall, EarlyView.
In this work, new membranes based on charged & nanoporous nanosheets with unprecedented selectivity to silver versus a wide range of other metallic ions are reported. Furthermore, a demonstrated and lead specific intralamellar lead pathway is demonstrated. A potential applicability for ubiquitous silver in WEEE is validated.
Sarah M. Chevrier   +6 more
wiley   +1 more source

Boundary values of Hankel and Toeplitz determinants for q -convex functions. [PDF]

open access: yesMethodsX
Hadi SH   +5 more
europepmc   +1 more source

Level sets of univalent functions

open access: yesCommentarii Mathematici Helvetici, 1981
Hayman, W.K., Wu, J.-M.G.
openaire   +1 more source

Convolution operators preserving univalent functions

open access: yes, 1989
Summary: For a fixed function \(f_0\) the Hadamard product \(f_0*f\) is a linear operator in the set containing the variable function \(f\). For a special choice of \(f_0\) and \(f\) ranging in certain subclasses of the well- known class \(S\) of normalized univalent functions such an operator is investigated.
openaire   +2 more sources

Colloidal Quasi‐2D Cs2AgBiBr6 Double Perovskite Nanosheets: Synthesis and Application as High‐Performance Photodetectors

open access: yesSmall, EarlyView.
Layered quasi‐2D Cs2AgBiBr6 nanosheets, with large lateral dimensions of up to 1.4 µm, which are only a few nanometers thick, were synthesized as a result of systematic investigation of the roles of ligands and reaction temperature. The nanosheets were used to develop high‐performance photodetectors, yielding detectivity in the order of 1012 Jones with
Pannan I. Kyesmen   +4 more
wiley   +1 more source

Reversible Bond Dynamics Enable Crystallinity‐Healed COF Membranes for Selective Ion Transport

open access: yesSmall, EarlyView.
Conventional polymeric membranes are constrained by intrinsic trade‐offs between high ion permeability and precise selectivity due to disordered transport pathways. This article introduces a make‐then‐heal strategy for covalent organic framework membranes, decoupling crystallization from membrane formation.
Wenming Zhao   +9 more
wiley   +1 more source

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