Electrochemical Assay Method for the Rapid Determination of Oxidase Enzyme Activities

1998 ◽  
Vol 12 (2) ◽  
pp. 123-127 ◽  
Author(s):  
Silke Kroger ◽  
Steven J. Setford ◽  
Anthony P.F. Turner
Keyword(s):  
Enzyme Activities ◽  
Rapid Determination ◽  
Assay Method ◽  
Electrochemical Assay ◽  
Oxidase Enzyme

Rapid determination of enzyme activities of recombinant human cytochromes P450, human liver microsomes and hepatocytes

2003 ◽  
Vol 24 (9) ◽  
pp. 375-384 ◽  
Author(s):  
Anima Ghosal ◽  
Neil Hapangama ◽  
Yuan Yuan ◽  
Xiaowen Lu ◽  
Debra Horne ◽  
...  
Keyword(s):  
Enzyme Activities ◽  
Human Liver ◽  
Rapid Determination ◽  
Cytochromes P450 ◽  
Liver Microsomes ◽  
Human Liver Microsomes

scholarly journals Rapid determination of tricarboxylic acid cycle enzyme activities in biological samples

2010 ◽  
Vol 11 (1) ◽  
pp. 5 ◽  
Author(s):  
Sergio Goncalves ◽  
Vincent Paupe ◽  
Emmanuel P Dassa ◽  
Jean-Jacques Brière ◽  
Judith Favier ◽  
...  
Keyword(s):  
Biological Samples ◽  
Enzyme Activities ◽  
Rapid Determination ◽  
Tricarboxylic Acid Cycle ◽  
Tricarboxylic Acid ◽  
Acid Cycle ◽  
Cycle Enzyme

Weak Beam Imaging and Diffraction Studies of Stacking Faults in Silicon

1976 ◽  
Vol 34 ◽  
pp. 590-591
Author(s):  
T. Y. Tan ◽  
W. K. Tice
Keyword(s):  
Fast Neutron ◽  
Rapid Determination ◽  
Stacking Faults ◽  
Imaging Method ◽  
Large Reduction ◽  
Dislocation Loops ◽  
Fringe Spacing ◽  
Weak Beam ◽  
Kinematical Theory

In studying ion implanted semiconductors and fast neutron irradiated metals, the need for characterizing small dislocation loops having diameters of a few hundred angstrom units usually arises. The weak beam imaging method is a powerful technique for analyzing these loops. Because of the large reduction in stacking fault (SF) fringe spacing at large sg, this method allows for a rapid determination of whether the loop is faulted, and, hence, whether it is a perfect or a Frank partial loop. This method was first used by Bicknell to image small faulted loops in boron implanted silicon. He explained the fringe spacing by kinematical theory, i.e., ≃l/(Sg) in the fault fringe in depth oscillation. The fault image contrast formation mechanism is, however, really more complicated.

Development of Validated Stability Indicating HPTLC Method for Assay of Ozagrel and its Pharmaceutical Formulations

2018 ◽  
pp. 36-48 ◽  
Author(s):  
Vishal N Kushare ◽  
Sachin S Kushare
Keyword(s):  
High Performance ◽  
Linear Regression Analysis ◽  
Pharmaceutical Formulations ◽  
Base Hydrolysis ◽  
Assay Method ◽  
Related Substance ◽  
Stability Indicating ◽  
Regular Production ◽  
Hptlc Method

The present paper describes stability indicating high-performance thin-layer chromatography (HPTLC) assay method for Ozagrel in bulk drugs. The method employed TLC aluminium plates precoated with silica gel 60F-254 as the stationary phase. The solvent system consisted of toluene: methanol: triethylamine (6.5: 4.0: 0.1 v/v/v). The system was found to give compact spot for Ozagrel (Rf value of 0.40 ± 0.010). Densitometric analysis of Ozagrel was carried out in the absorbance mode at 280 nm. The linear regression analysis data for the calibration plots showed good linear relationship with r2 = 0.999 with respect to peak area in the concentration range 30 - 120 ng/spot. The developed HPTLC method was validated with respect to accuracy, precision, recovery and robustness. Also to determine related substance and assay determination of Ozagrel that can be used to evaluate the quality of regular production samples. The developed method can also be conveniently used for the assay determination of Ozagrel in pharmaceutical formulations. The limits of detection and quantitation were 4.069 and 12.332 ng/spot, respectively by height. Ozagrel was subjected to acid and alkali hydrolysis, oxidation, photochemical and thermal degradation. The drug undergoes degradation under acidic, basic, oxidation and heat conditions. This indicates that the drug is susceptible to acid, base hydrolysis, oxidation and heat. Statistical analysis proves that the method is repeatable, selective and accurate for the estimation of said drug. The proposed developed HPTLC method can be applied for identification and quantitative determination of Ozagrel in bulk drug and tablet formulation.

Methods for rapid determination of pecan (Carya illinoensis) seed viability

2017 ◽  
Vol 45 (2) ◽  
pp. 455-464
Author(s):  
T.T. Xue ◽  
J. Liu ◽  
Y.B. Shen ◽  
G.Q. Liu
Keyword(s):  
Rapid Determination ◽  
Seed Viability ◽  
Carya Illinoensis

Rapid Determination of Pyruvic Acid in Erythrocytes by Lysing-heating Fluorescence Capillary Method

2013 ◽  
Vol 40 (11) ◽  
pp. 1725-1729
Author(s):  
Lang ZHOU ◽  
Qiao-Jing LI ◽  
Yong-Sheng LI ◽  
Xiu-Feng GAO
Keyword(s):  
Pyruvic Acid ◽  
Rapid Determination ◽  
Capillary Method
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