Results 21 to 30 of about 3,286,968 (371)

Homogeneous Electrochemical Aptamer Sensor Based on Two-Dimensional Nanocomposite Probe and Nanochannel Modified Electrode for Sensitive Detection of Carcinoembryonic Antigen

open access: yesMolecules, 2023
A rapid and convenient homogeneous aptamer sensor with high sensitivity is highly desirable for the electrochemical detection of tumor biomarkers. In this work, a homogeneous electrochemical aptamer sensor is demonstrated based on a two-dimensional (2D ...
Zhengzheng Yan   +3 more
doaj   +1 more source

On the Numerical Solution of 1D and 2D KdV Equations Using Variational Homotopy Perturbation and Finite Difference Methods

open access: yesMathematics, 2022
The KdV equation has special significance as it describes various physical phenomena. In this paper, we use two methods, namely, a variational homotopy perturbation method and a classical finite-difference method, to solve 1D and 2D KdV equations with ...
Abey Sherif Kelil, Appanah Rao Appadu
doaj   +1 more source

Nonisothermal homogeneous nucleation [PDF]

open access: yes, 1992
Classical homogeneous nucleation theory is extended to nonisothermal conditions through simultaneous cluster mass and energy balances. The transient nucleation of water vapor following a sudden increase in saturation ratio is studied by numerically ...
Seinfeld, J. H., Wyslouzil, B. E.
core   +1 more source

Dinuclear Gold Complexes Supported by Wide Bite Angle Diphosphines for Preorganization-Induced Selective Dual-Gold Catalysis

open access: yesInorganics, 2019
The synthesis, reactivity, and potential of well-defined dinuclear gold complexes as precursors for dual-gold catalysis is explored. Using the preorganizing abilities of well-known wide bite angle diphosphine ligands, DBFPhos and DPEPhos, dinuclear Au(I)&
Marianne Lankelma   +3 more
doaj   +1 more source

Mediated homogenization [PDF]

open access: yesPhysical Review A, 2007
Homogenization protocols model the quantum mechanical evolution of a system to a fixed state independently from its initial configuration by repeatedly coupling it with a collection of identical ancillas. Here we analyze these protocols within the formalism of "relaxing" channels providing an easy to check sufficient condition for homogenization.
BURGARTH D, GIOVANNETTI, VITTORIO
openaire   +4 more sources

Porphyrin Co(III)-Nitrene Radical Mediated Pathway for Synthesis of o-Aminoazobenzenes

open access: yesMolecules, 2018
Azobenzenes are versatile compounds with a range of applications, including dyes and pigments, food additives, indicators, radical reaction initiators, molecular switches, etc.
Monalisa Goswami, Bas de Bruin
doaj   +1 more source

Semi-Quantitative Evaluation of Asymmetricity of Dialysis Membrane Using Forward and Backward Ultrafiltration

open access: yesMembranes, 2022
Performance of the dialysis membrane is strongly dependent upon the physicochemical structure of the membrane. The objective of this study is to devise a new in vitro evaluation technique to quantify the physicochemical structures of the membrane.
Akihiro C. Yamashita   +5 more
doaj   +1 more source

Igniting homogeneous nucleation [PDF]

open access: yes, 2004
Transient homogeneous nucleation is studied in the limit of large critical sizes. Starting from pure monomers, three eras of transient nucleation are characterized in the classic Becker-D\"oring kinetic equations with two different models of discrete ...
A. Carpio   +12 more
core   +3 more sources

Catalyzing Electrosynthesis: A Homogeneous Electrocatalytic Approach to Reaction Discovery.

open access: yesAccounts of Chemical Research, 2020
Electrochemistry has been used as a tool to drive chemical reactions for over two centuries. With the help of an electrode and a power source, chemists are bestowed with an imaginary reagent whose potential can be precisely dialed in.
Juno C. Siu, Niankai Fu, Song Lin
semanticscholar   +1 more source

Intelligent Measurement of Void Fractions in Homogeneous Regime of Two Phase Flows Independent of the Liquid Phase Density Changes

open access: yesFractal and Fractional, 2023
Determining the amount of void fraction of multiphase flows in pipelines of the oil, chemical and petrochemical industries is one of the most important challenges.
Abdullah M. Iliyasu   +4 more
doaj   +1 more source

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