نتایج جستجو برای: multicomponent

تعداد نتایج: 9985  

2002
V. I. Kober M. G. Mozerov J. Alvarez-Borrego I. A. Ovseyevich

Simple elementwise transformations, based on circular centering performed over multicomponent images before the channel correlations, are proposed for improving recognition of multicomponent objects. The transformations reduce a strong correlation between the channel components of real-life images. As a result, the subsequent channel correlations can be performed independently in the decorrelat...

2011
Timothy J. Montavon Jing Li Jaime R. Cabrera-Pardo Milan Mrksich Sergey A. Kozmin

Multicomponent reactions are employed extensively in many areas of organic chemistry. Despite significant progress, the discovery of such enabling transformations remains challenging. Here, we present the development of a parallel, label-free reaction-discovery platform that can be used in the identification of new multicomponent transformations. Our approach is based on parallel mass spectrome...

Journal: :Sibirskie Elektronnye Matematicheskie Izvestiya 2020

Journal: :Acta Crystallographica Section A Foundations and Advances 2017

Novel N-amino benzylthiolates were synthesized via multicomponent reaction of malononitrile, isothiocyanates and benzyl halides under conventional and solvent-free conditions. Various electron-donating and -withdrawing substitutes within both isothiocyanates and benzyl halides were used to demonstrate the efficiency of new methodology. A broad spectrum of antibacterial and antifungal activities...

Amir Abbas Izadpanah Farshad Varaminian Mohsen Vafaie Sefti,

Based on driving force for crystallization of one-component gas hydrate, in this report an expression for the supersaturation for crystallization of multicomponent gas hydrate is derived. Expressions for the supersaturation are obtained in isothermal and isobaric regimes. The results obtained are applied to the crystallization of hydrates of mixtures of methane plus ethane and can apply to ...

Azam Mansournezhad Jalal Albadi,

CuO-CeO2 nanocomposite is reported as a green and highly efficient recyclable catalyst for the multicomponent  synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones under solvent-free conditions. The catalyst was synthesized by co-precipitation method and characterized by XRD, BET specific surface area, FESEM and EDS analysis.

A facile and efficient one-pot, multicomponent synthesis of 4H-chromenes is reported, through the reaction of arylglyoxalmonohydrates with 1,3-diketones and malononitrile in eTEMPthanol in the presence of L-proline as a catalyst.

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