Numerical method for the simultaneous determination of unknown parameters in a parabolic equation

2010 ◽  
Vol 87 (1) ◽  
pp. 150-157 ◽  
Author(s):  
Runsheng Yang ◽  
Yijun Li
Keyword(s):  
Parabolic Equation ◽  
Numerical Method ◽  
Simultaneous Determination ◽  
Unknown Parameters

scholarly journals Chemometrics-Assisted Simultaneous Determination of Atenolol and Furosemide in Synthetic Binary Mixtures and Combined Tablet Preparations

2010 ◽  
Vol 7 (3) ◽  
pp. 997-1002
Author(s):  
Amir H. M. Sarrafi ◽  
Elahe Konoz ◽  
Alireza Feyzbakhsh
Keyword(s):  
Numerical Method ◽  
Simultaneous Determination ◽  
Binary Mixtures ◽  
Multivariate Calibration ◽  
Correlation Coefficients ◽  
Preparation Methods ◽  
Standard Methods ◽  
Spectrophotometric Data ◽  
Good Agreement

In this work a numerical method, based on the use of spectrophotometric data coupled to PLS multivariate calibration, is reported for the simultaneous determination of furosemide (FUR) and atenolol (ATE) in synthetic samples and combined commercial tablets. The correlation coefficients (R2) and recovery range for ATE and FUR in synthetic mixtures were 0.9938, 0.9949 and 94.72-103.72%, 95.60-104.34% respectively. The results of optimized method in combined tablet preparations compared with British Pharmacopeia 2007 standard methods that have a good agreement. The proposed method are simple, fast, inexpensive and do not need to any separation or preparation methods.

Simultaneous determination of unknown coefficients in a parabolic equation

2008 ◽  
Vol 87 (10-11) ◽  
pp. 1167-1177 ◽  
Author(s):  
Afet Golayoglu Fatullayev ◽  
Nizami Gasilov ◽  
Ismihan Yusubov
Keyword(s):  
Parabolic Equation ◽  
Simultaneous Determination
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