نتایج جستجو برای: catalytic determination

تعداد نتایج: 328512  

Faridbod, Farnoush, Khorramizadeh, Mohammad Reza, Khoshnevisan, Kamyar, Larijani, Bagher, Sajjadi-Jazi, Sayed Mahmoud,

Background: A novel nanocomposite-modified electrode based on reduced graphene oxide (rGO) decorated with crown-ether and gold nanoparticles (GNPs) on the surface of a glassy carbon electrode (GCE) was fabricated to investigate 5-HT determination. Methods: The morphology of nanocomposite was characterized by scaning electron microscopy (SEM). Diabetic zebrafish was obtained by overfeeding via ...

Nowadays, palladium compounds due to their especial characteristics used in different industries, mainly in electrical power sources and chemical productions as a catalyst. Therefore, Pd concentration is increasing in our around that can be contaminant our environment due its toxic effects. In this work, a simple, selective and rapid flow injection method of analysis (FIA) has been developed fo...

Journal: :Chemical communications 2014
Arash Mouradzadegun Fatemeh Abadast

A heterogeneous reaction-based colorimetric chemodosimeter toward cyanide anions was designed based on a hybrid pyrylium/alumina probe which possesses a great selectivity for CN(-) over other common anions even at significantly higher concentrations. The synergistic incorporation of the inorganic matrix and the organic receptor can play a pivotal role in the convenient field-usable determinatio...

Journal: :Journal of the American Chemical Society 2011
Colin M Rathbun Jeffrey B Johnson

The rhodium-catalyzed intramolecular carboacylation of quinolinyl ketones serves as an ideal subject for the mechanistic study of carbon-carbon bond activation. Combined kinetic and NMR studies of this reaction allowed the identification of the catalytic resting state and determination of the rate law, (12)C/(13)C kinetic isotope effects, and activation parameters. These results have identified...

Journal: :Chemical science 2017
Shiho Sairenji Takashi Kikuchi Mohamed Ahmed Abozeid Shinobu Takizawa Hiroaki Sasai Yuichiro Ando Kohsuke Ohmatsu Takashi Ooi Makoto Fujita

Determination of the absolute configuration of chiral tetra-substituted carbon centers is one of the most taxing steps in the enantioselective construction of this structural motif in asymmetric synthesis. Here, we demonstrate that the crystalline sponge method provides an effective way to crystallographically determine the absolute configuration of organic compounds bearing chiral quaternary c...

2000

Conserted genome sequencing projects have elucidated the coding sequence of a myriad of genes from many different organisms. An important next step is to determine the structural and functional relationships of the proteins encoded by these genes. Recently, EPICENTRE introduced the EZ::TNTM In-Frame Linker Insertion Kit to speed up and simplify protein modification and facilitate determination ...

2012
Chengdong Huang Rajagopalan Bhaskaran Smita Mohanty

Background: Stt3p is the catalytic subunit of Oligosaccharyl Transferase (OT) that catalyses protein N-glycosylation. Results: We report the first high-resolution NMR structure of the acceptor binding domain of yeast OT. Conclusion: This work provides structural basis for the function of the C-terminal Domain of Stt3p subunit. Significance: Structure determination of this critical domain is an ...

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