derivative series
Recently Published Documents


TOTAL DOCUMENTS

10
(FIVE YEARS 0)

H-INDEX

4
(FIVE YEARS 0)

2018 ◽  
Vol 7 (2) ◽  
pp. 750
Author(s):  
D S Sankar ◽  
Nurul Aini Jaafar ◽  
Yazariah Yatim

The effect of reversible phase exchange between the flowing fluid and wall tissues of arteries in the unsteady dispersion of solute in blood flow through a narrow artery is analysed mathematically, modelling the blood as Casson fluid. The resulting convective diffusion equation along with the initial and boundary conditions is solved analytically using the derivative series expansion method. The expressions for the negative asymptotic phase exchange, negative asymptotic convection, longitudinal diffusion coefficient and mean concentration are obtained. It is noted that when the solute disperses in blood flow through a narrow artery, the negative exchange coefficient, the negative convection coefficient increase and the longitudinal diffusion coefficient decreases with the increase of the Damköhler number and partition coefficient.


2012 ◽  
Vol 16 (01) ◽  
pp. 163-174 ◽  
Author(s):  
Ahmad Tuhl ◽  
Wadzanai Chidawanayika ◽  
Hamada Mohamed Ibrahim ◽  
Nouria Al-Awadi ◽  
Christian Litwinski ◽  
...  

This work reports on the synthesis of novel metal free, zinc, aluminum, gallium and indium tetra and octa (2,6-di-iso-propylphenoxy)-substituted phthalocyanine derivatives. UV-visible and 1H NMR analyses confirm that a non-planar conformation, adapted by the phenoxy substituents due to steric interaction in both derivative series, perfectly discourage cofacial aggregation. Fluorescence quantum yields vary as a function of the number of substituents on the ring periphery, while the fluorescence lifetimes display no distinct trend. Triplet quantum yields are significantly larger for the tetra 2,6-di-iso-propylphenoxy- substituted derivatives relative to their corresponding octa-substituted species. However there was no overall trend in the triplet lifetime values. For almost all of the phthalocyanine derivatives, singlet oxygen was produced with relatively good quantum yields. This study explores the possibility of fine-tuning their physicochemical properties by simple structural modification.


2008 ◽  
Vol 51 (5) ◽  
pp. 1223-1230 ◽  
Author(s):  
Heather M. Bigott-Hennkens ◽  
Sulochana Junnotula ◽  
Lixin Ma ◽  
Fabio Gallazzi ◽  
Michael R. Lewis ◽  
...  

ChemInform ◽  
1987 ◽  
Vol 18 (20) ◽  
Author(s):  
M. N. BARSEGOVA ◽  
N. M. LOIM ◽  
N. K. BARANETSKAYA ◽  
V. N. SETKINA

1974 ◽  
Vol 8 (10) ◽  
pp. 614-617
Author(s):  
O. V. Kozlova ◽  
L. A. Nikolaeva ◽  
I. M. Ovcharova ◽  
I. V. Persiyanova ◽  
E. S. Golovchinskaya

1974 ◽  
Vol 8 (8) ◽  
pp. 472-475
Author(s):  
I. M. Zasosova ◽  
I. M. Ovcharova ◽  
E. S. Golovchinskaya

Sign in / Sign up

Export Citation Format

Share Document