نتایج جستجو برای: aqueous media

تعداد نتایج: 359415  

Journal: :Acta pharmaceutica 2009
Yousef Javadzadeh Ameneh Mohammadi Nazaninossadat Seyed Khoei Ali Nokhodchi

The morphology of crystals has an appreciable impact role on the physicochemical properties of drugs. Drug properties such as flowability, dissolution, hardness and bioavailability may be affected by crystallinity behaviours of drugs. The objective of this study was to achieve an improved physicomechanical property of carbamazepine powder through recrystallization from aqueous solutions at diff...

Journal: :Photochemical & Photobiological Sciences 2018

Journal: :Chinese Journal of Organic Chemistry 2012

Journal: :Journal of Synthetic Organic Chemistry, Japan 2003

Journal: :Journal of Biological Chemistry 1937

2007
Seyfettin ERTURAN Zehra ALTIN Mustafa YALÇIN

4-(N, NDimethylamino) Phenyl Propenal and Derivatives have been studied over a wide pH range in aqueous and non-aqueous media using platinum foil electrode. Two reductions in acidic medium and one reduction in basic medium take place involving two electrons per reduction. In the first the C=C double bond is reduced, in the second the aldehyde group. In acid media, two-electron process is split ...

2015
Abhishek Chandra Man Singh

Highly stable and homogeneously dispersed amino acid coated silver nanoparticles (ANP) of ≈ 10 nm diameter, ranging from 420 to 430 nm are prepared on AgNO3 solution addition to gum of Azadirachta indica solution at 373.15 K. The amino acids were selected based on their polarity. The synthesized nanoparticles were characterized by UV-Vis, FTIR spectroscopy, HR-TEM, XRD, SEM and 1H-NMR. The coat...

Journal: :Physical chemistry chemical physics : PCCP 2013
Manuel E Medina Cristina Iuga Juan Raúl Alvarez-Idaboy

In this work, we have carried out a quantum chemistry and computational kinetics study on the reactivity of propyl gallate towards ˙OOH, ˙OOCH3 and ˙OOCHCH2 radicals, in aqueous and lipid media. We have considered three reaction mechanisms: hydrogen transfer (HT), radical adduct formation (RAF) and single electron transfer (SET). Rate constants and relative branching ratios for the different pa...

Journal: :Journal of the Serbian Chemical Society 2002

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