نتایج جستجو برای: stability constant of complexes

تعداد نتایج: 21202580  

Journal: Nanomedicine Journal 2020
Nadezhda N. Dremova Natalia A. Sanina Natalia I. Shkondina Natalia P. Akentieva Nikolai Zhelev, Sergei M. Aldoshin Vladimir I. Torbov Аrthur R. Gizatullin

Objective(s): Currently, the development of nanoparticles for the stabilization and targeted delivery of cardiac drugs has gained significance. The present study aimed to develop nontoxic nanoparticles based on chitosan-hyaluronic acid (HA), encapsulate dinitrosyl iron complexes (DNICs, donors NO) into the nanoparticles to increase the stability and effectiveness of their action, and assess the...

Journal: :Chimica techno acta 2021

Traditionally, glycyrrhizic acid has been used to form polydentate complexes. For the first time in presented paper, complexation of Plant’s Flavonoids (Quercetin (Qu) and its glycoside - Rutin (Rut)) with novel Russian antiviral drug Camphecene (Camph) was investigated. The complexes obtained at different molar ratios were studied using UV/Vis spectroscopy. Formation host: guest registered: Qu...

Pavlinka Kokoskarova Rubin Gulaboski, Sofija Petkovska

In this review, we focus on cyclic voltammetry as a reliable electrochemical technique to study mechanisms, kinetics and thermodynamics of various types of drug-drug interactions. While we present and discuss six theoretical models relevant to analyze drug-drug (or drug-DNA) interactions, we also give hints about recent experimental achievements in this field. In addition, we provide the reader...

In this research the synthesis of [Co(Salen)(PPh3)(H2O)]4[Fe(CN)6] and [Co(Salophen)(PPh3)(H2O)]4[Fe(CN)6] schiff base complexes was reported. Co3O4/CoFe2O4 magnetic nanoparticles were prepared by calcination of these complexes at 500, 550 and 600°C. Precursor complexes were identified by FT-IR and UV-Vis spectroscopy and their thermal behavior was studied via TG/DTA. Nanomagnetic samples were ...

پایان نامه :0 1392

nowadays in trade and economic issues, prediction is proposed as the most important branch of science. existence of effective variables, caused various sectors of the economic and business executives to prefer having mechanisms which can be used in their decisions. in recent years, several advances have led to various challenges in the science of forecasting. economical managers in various fi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1388

abstract sensitive and precise voltammetric methods for the determination of trace amounts of furaldehydes, mainly as furfural (f) and 5-hydroxymethyl-2-furaldehyde (hmf), in waste waters and other matrices is described. determination of total furaldehyde at < ?g g-1 levels in alkaline buffered aqueous media was individually investigated. by the use of ordinary swv and adsorptive square wave ...

1998
J. H. Field

A model independent analysis is made using the LEP and SLD data on Z decays available at the end of 1996. The effective weak coupling constants of leptons, c quarks and b quarks are extracted. Except for the right-handed b quark coupling, they all agree with the predictions of the Standard Electroweak Model for mt = 180 GeV and mH = 100 GeV. The right-handed b quark coupling is found to be 42% ...

Journal: :The Journal of biological chemistry 1975
J W Donovan K D Ross

Differential scanning calorimetric experiments show that addition of Al(III) to conalbumin increases its denaturation temperature by 5 degrees, from 60 to 68 degrees. Only one Al(III) bound per conalbumin molecule produces this change in heat stability; additional bound Al(III) does not affect the heat stability. Since Al(III) displaces both Cu(II) bound at the metal binding sites of conalbumin...

2009
Ante Miličević Nenad Raos

The equilibrium constants K1, Ka and β1 of 25 copper(II) complexes with di(N = 15), tri(N = 5), tetra(N = 2), and pentapeptides (N = 3) were estimated by using linear models based on the valence connectivity index of the 3 order (χ). For the stability constant K1 two kinds of models were developed: bivariate models, which divide a molecule into Nand C-terminal segments, and multivariate models,...

Journal: :chemistry of solid materials 2013
mojgan zendehdel m solimannejad

a computational study of the electronic structure and stability of complexes formed between zeolite y and boric acid was carried out at the hf and b3lyp levels using 6-31g* basis set. five structures located as local minimum in pes of complex (structures d, e, f, g, and h). the most stable structure is formed due to hydrogen bonding between two hydroxyl of boric acid and both oxygen of ...

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