نتایج جستجو برای: aroyl bromide

تعداد نتایج: 17469  

Journal: :Chemical communications 2011
Chika I Someya Shigeyoshi Inoue Carsten Präsang Elisabeth Irran Matthias Driess

Cationic and zwitterionic boryl bromide species and a borenium-boryl bromide cation have been synthesised which represent new N-donor stabilised cationic boron compounds with β-diketiminate ligands. The unexpected borenium-boryl bromide results from a head-to-tail dimerisation of the corresponding zwitterionic boryl bromide accompanied by proton migration. The electronic nature of these new spe...

Journal: :journal of physical & theoretical chemistry 2004
hossein aghaie karim zare ali reza abedin mehran aghaie

a highly selective electrode for bromide ion based on aza pyrilium derivative as an excellentionophore is described.the sensor exhibits a good linear response with a slope of ( 60±1 ) mv per decadeover the concentration range of ( 1×10-3 – 9×10-6 m ) , and a detection limit of ( 3×10-6 m ) of bromideions .the electrode response is independent of ph in the range of(4.0 –9.5).selectivity coeffici...

Journal: :Thorax 1995
A Ikeda K Nishimura H Koyama T Izumi

BACKGROUND Inhaled anticholinergics and beta agonists are widely used in the treatment of patients with chronic obstructive pulmonary disease (COPD). However, dosage requirements have not been thoroughly evaluated and comparative dose-response data for these agents are limited. METHODS Twenty men with stable COPD of mean (SD) age 69.4 (5.8) years and FEV1 0.93 (0.38) litres were studied in ra...

Journal: :Occupational and Environmental Medicine 1945

Journal: :Occupational and Environmental Medicine 1945

Journal: :Acta Crystallographica Section E Structure Reports Online 2010

Journal: :Occupational and Environmental Medicine 1961

Journal: :Acta Crystallographica Section E Structure Reports Online 2009

Journal: :Acta Crystallographica Section E Structure Reports Online 2012

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