نتایج جستجو برای: phase transfer catalyse

تعداد نتایج: 872689  

2002

Biocatalysis can be broadly defined as the use of biological molecules (usually enzymes) to catalyse specific chemical reactions. Enzymes are complex protein molecules. They are produced by living organisms to catalyse the biochemical reactions required for life. Although enzymes are formed within living cells, they can continue to function in vitro (in the test-tube) and their ability to perfo...

Journal: :Journal of materials chemistry. A, Materials for energy and sustainability 2021

Nanodroplets of sulfur-stabilised copper nanoparticles effectively catalyse the aerobic oxidation amines to imines under ambient conditions.

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...

A semi-analytical investigation has been carried out to analyze unsteady MHD second-grade flow under the Dual-Phase-Lag (DPL) heat and mass transfer model in a vertical microchannel filled with porous material. Diffusion thermo (Dufour) effects and homogenous chemical reaction are considered as well. The governing partial differential equations are solved by using the Laplace transform method w...

Assessment of complex harmonic current contribution of each wind turbines at connection point of a wind farm to the grid (primary emission) is presented in this paper. Moreover, contribution of grid background harmonic voltage distortion on harmonic current distortion (secondary emission) of each turbine is also evaluated. Both assessments are represented based on primary and secondary transfer...

This research aims to identify the facilitating factors of learning transfer in NIGC, using a mixed research method. In the qualitative phase, 16 experts of NIGC and university faculty members were selected as the research sample. In the qualitative phase, survey research method was applied and a sample of 376 subjects was selected based on Cochran formula. In order to analyze the qualitative d...

Journal: :Ecosystems 2021

Abstract Widely observed inertia of forest communities contrasts with climate change projections that suggest dramatic alterations composition for the coming decades. Disturbances might be a key process to catalyse changes in tree species under environmental by creating opportunities ‘new’ establish. To test this assumption, we compared two assessments (1993–1995, 2009–2017) from Swiss National...

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