نتایج جستجو برای: 1h qnmr spectroscopy
تعداد نتایج: 196670 فیلتر نتایج به سال:
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 ...
The structural heterogeneity of water-extractable arabinoxylan (WE-AX) impacts wheat flour functionality. 1H diffusion-ordered (DOSY) nuclear magnetic resonance (NMR) spectroscopy revealed structur...
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,...
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, ...
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...
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.
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...
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 ...
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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