نتایج جستجو برای: 1h qnmr spectroscopy

تعداد نتایج: 196670  

Journal: :American Journal of Neuroradiology 2012

Journal: :Acta chimica Slovenica 2010
Niketan S Patel Smita Jauhari Girishkumar N Mehta

The inhibition effect of imidazole derivatives 4-methyl-2-propyl-1H-benzimidazole-6-carboxylic acid (MPBI) and 1,4'-Dimethyl-2'-propyl-1H,3'H-2,5'-dibenzimidazole (DPBI) against mild steel corrosion in 1 N HCl solutions were evaluated using conventional weight loss, potentiodynamic polarization, linear polarization and electrochemical impedance spectroscopy. The weight loss results showed that ...

Journal: :Journal of Agricultural and Food Chemistry 2021

The structural heterogeneity of water-extractable arabinoxylan (WE-AX) impacts wheat flour functionality. 1H diffusion-ordered (DOSY) nuclear magnetic resonance (NMR) spectroscopy revealed structur...

2016
Naoko Aoyama Peter C. Williamson Seyed Mirsattari

s: Aoyama N, Théberge J, Williamson KE, Drost DJ, Manchanda R, Malla AK, NorthcottS, Menon RS, Neufeld RWJ, Rajakumar N, Densmore M, Schaefer B, Williamson PC.“Longitudinal Study of Schizophrenia: Gray Matter Loss and Glutamtaregic Activity inthe Limbic Basal Ganglia Thalamo-Cortial Circuit (BGTC)”. Department PsychiatryAnnual Research Day, University of Western Ontario, London,...

2012
Nina Gonsior Fabian Mohr Helmut Ritter

The synthesis of a heterocyclic mesomeric betaine by quaternization reaction of 1-butylimidazole and tetrabromo-1,4-benzoquinone is presented. The structure was verified by means of X-ray single-crystal analysis, NMR and IR spectroscopy. Inclusion complexes of the heterocyclic mesomeric betaine with randomly methylated (1.8) β-cyclodextrin were investigated by UV-vis spectroscopy. Furthermore, ...

2015
Mingxing Liu Jiarong Li Hongxin Chai Kai Zhang Deli Yang Qi Zhang Daxin Shi

An efficient one-pot synthesis of pyrazolo[3,4-d]pyrimidine derivatives by the four-component condensation of hydrazines, methylenemalononitriles, aldehydes and alcohols has been developed via two different reaction pathways. The structures of target products were characterized by IR spectroscopy, NMR ((1)H and (13)C) spectroscopy and HRMS (ESI) spectrometry. The crystal structure of 4-ethoxy-6...

Journal: :Annals of bone marrow research 2021

To assess the usefulness of proton MR-spectroscopy (1H-MRS) and diffusion-weighted MRI (DW-MRI) sequences in follow-up CLL-patients with chemotherapy treatment.

2018

Submit Manuscript | http://medcraveonline.com Abbreviations: EC50: Half Maximal Effective Concentration; MIC: Minimum Inhibitory Concentration; TLC: Thin-Layer Chromatography; PTLC: Preparative Thin Layer Chromatography; FTIR: Fourier Transform Infrared Spectroscopy; HRMS E: High-Resolution Mass Spectrometer Electron Ionization; 1H NMR; Proton Nuclear Magnetic Resonance; 13C NMR; Carbon Nuclear...

2016
Alex Roberto Ramírez Mejía Miguel Yus Fuertes Manuela Jorquera Moya

The diagnosis of intracranial focal lesions based on imaging studies is a challenge. In brain abscess, proton magnetic resonance spectroscopy (1H-MRS) is useful to define etiology, differentiating anaerobic from aerobic pathogens and inclusive sterile abscess based on the behavior of certain metabolites. We report a patient with Rendu-Osler-Weber syndrome, pulmonary arteriovenous fistulas, and ...

Journal: :Molecules 2015
Karla I Garfias-Gonzalez Ulises Organista-Mateos Andrés Borja-Miranda Virginia Gomez-Vidales Simon Hernandez-Ortega Sandra Cortez-Maya Marcos Martínez-García

Two new classes of dendrimers bearing 8 and 32 fluorene donor groups have been synthesized. The first and second generations of these porphyrin-PAMAM-fluorene dendrimers were characterized by 1H-NMR, 13C-NMR, FTIR, UV-vis spectroscopy, elemental analyses and MALDI-TOF mass spectrometry. The UV-vis spectra showed that the individual properties of donor and acceptor moieties were preserved, indic...

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