All Stories

  1. Difference between Adjacent Data Point as a New Method for the Analysis of Ternary Mixtures of Tartrazine, Sunset Yellow and Azorubine Dyes

    Article • Current Pharmaceutical Analysis, January 2017, Bentham Science Publishers

    Professor HASSAN Y. ABOUL-ENEIN, Dr R'afat M Nejem

  2. New approach application of data transformation in mean centering of ratio spectra method

    Article • Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, May 2015, Elsevier

    Dr R'afat M Nejem

  3. Development and validation of kinetic and atomic absorption spectrophotometric methods for the determination of salbutamol sulfate

    Article • RSC Advances, January 2015, Royal Society of Chemistry

    Dr R'afat M Nejem

  4. Comparative study of three modified numerical spectrophotometric methods: An application on pharmaceutical ternary mixture of aspirin, atorvastatin and clopedogrel

    Article • Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, July 2014, Elsevier

    Dr R'afat M Nejem

  5. Double divisor mean centering of ratio spectra as a developed spectrophotometric method for the analysis of five-component mixture in drug analysis

    Article • Journal of Saudi Chemical Society, March 2014, Elsevier

    Dr R'afat M Nejem

  6. New Chemometrics Mode Based on Adjacent Data Points' Difference for the Simultaneous Determination of Clopidogrel, Atorvastatin, and Aspirin in their Combined Ternary Drug Formulation

    Article • Scientia Pharmaceutica, January 2014, Osterreichische Pharmazeutische Gesellschaft (OPhG)

    Dr R'afat M Nejem

  7. Effects of Iron on the Pharmacokinetics of Paracetamol in Saliva

    Article • Pakistan Journal of Biological Sciences, December 2013, Science Alert

    Dr R'afat M Nejem

  8. Kinetic spectrophotometric H-point standard addition method for the simultaneous determination of diloxanide furoate and metronidazole in binary mixtures and biological fluids

    Article • Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, October 2013, Elsevier

    Dr R'afat M Nejem

  9. Resolution of Ternary Mixture of Aspirin, Atorvastatin, and Clopidogrel by Chemometric-Assisted UV Spectroscopic and Liquid Chromatography Methods

    Article • International Journal of Spectroscopy, September 2013, Hindawi Publishing Corporation

    Dr R'afat M Nejem

  10. Resolution of five-component mixture using mean centering ratio and inverse least squares chemometrics

    Article • Chemistry Central Journal, September 2013, Springer Science + Business Media

    Dr R'afat M Nejem

  11. A Novel Ciprofloxacin Selective Membrane Electrode

    Article • Current Pharmaceutical Analysis, October 2012, Elsevier

    Dr R'afat M Nejem

  12. Amperometric biosensor based on diamond paste for the enantioanalysis of l-lysine

    Article • Biosensors and Bioelectronics, May 2012, Elsevier

    Dr R'afat M Nejem

  13. Determination ofl- and d-fucose using amperometric electrodes based on diamond paste

    Article • The Analyst, January 2012, Royal Society of Chemistry

    Dr R'afat M Nejem

  14. Enantioselective, Potentiometric Membrane Electrodes (EPME) Based on Maltodextrins for the Determination of L-Vesamicol in Serum Samples

    Article • Current Pharmaceutical Analysis, November 2011, Elsevier

    Dr R'afat M Nejem

  15. Enantioselective Potentiometric Membrane Electrodes Based on Antibiotics for the Determination of L- and D-Glyceric Acids

    Article • International Journal of Electrochemistry, January 2011, Hindawi Publishing Corporation

    Dr R'afat M Nejem

  16. Detection of Some Heavy Metals Due to Sewage Water Diffusion into Planted Land

    Article • Journal of Environmental Science and Technology, March 2009, Science Alert

    Dr R'afat M Nejem

  17. Sequential Injection Analysis utilizing Amperometric Biosensors as Detectors for the Simultaneous Determination of L- and D-Pipecolic Acid

    Article • Instrumentation Science & Technology, June 2008, Taylor & Francis

    Dr R'afat M Nejem

  18. An indirect atomic absorption spectrometric determination of ciprofloxacin, amoxycillin and diclofenac sodium in pharmaceutical formulations

    Article • Journal of the Serbian Chemical Society, January 2008, National Library of Serbia

    Dr R'afat M Nejem

  19. Novel atomic absorption spectrometric and rapid spectrophotometric methods for the quantitation of paracetamol in saliva: Application to pharmacokinetic studies

    Article • Indian Journal of Pharmaceutical Sciences, January 2008, OMICS Publishing Group

    Dr R'afat M Nejem

  20. Paracetamol Bioavailability Study by Means of Salivary Samples

    Article • Pakistan Journal of Biological Sciences, April 2007, Science Alert

    Dr R'afat M Nejem

  21. Effects of Paracetamol on the Pharmacokinetics of Ciprofloxacin in Plasma Using a Microbiological Assay

    Article • Clinical Drug Investigation, January 2007, Springer Science + Business Media

    Dr R'afat M Nejem

  22. Cyclodextrins-based enantioselective, potentiometric membrane electrodes for l-vesamicol assay in serum samples

    Article • Sensors and Actuators B Chemical, September 2006, Elsevier

    Dr R'afat M Nejem

  23. Determination of L‐Vesamicol in Serum Samples Using Enantioselective, Potentiometric Membrane Electrodes Based on Antibiotics

    Article • Analytical Letters, April 2006, Taylor & Francis

    Dr R'afat M Nejem

  24. Oral Ciprofloxacin Affects the Pharmacokinetics of Paracetamol in Saliva

    Article • Clinical Drug Investigation, January 2006, Springer Science + Business Media

    Dr R'afat M Nejem

  25. Enantioselective, Potentiometric Membrane Electrodes Based on Cyclodextrins for the Assay ofL‐ andD‐2‐Hydroxyglutaric Acid

    Article • Analytical Letters, September 2005, Taylor & Francis

    Dr R'afat M Nejem

  26. Determination of -2-hydroxyglutaric acid in urine samples using enantioselective, potentiometric membrane electrodes based on antibiotics

    Article • Sensors and Actuators B Chemical, May 2005, Elsevier

    Dr R'afat M Nejem

  27. Enantioanalysis of glyceric acid using enantioselective, potentiometric membrane electrodes: applications for the diagnosis of PH II and -glyceric acidemia/acidurias

    Article • Sensors and Actuators B Chemical, May 2005, Elsevier

    Dr R'afat M Nejem

  28. Enantioanalysis of -2-hydroxyglutaric acid in urine samples using enantioselective, potentiometric membrane electrodes based on maltodextrins

    Article • Talanta, January 2005, Elsevier

    Dr R'afat M Nejem

  29. New Amperometric Biosensors Based on Diamond Paste for the Assay ofL‐ andD‐Pipecolic Acids in Serum Samples

    Article • Preparative Biochemistry & Biotechnology, December 2004, Taylor & Francis

    Dr R'afat M Nejem

  30. Determination ofL‐ andD‐Pipecolic Acids Using a Diamond Paste Based Electrode

    Article • Instrumentation Science & Technology, December 2004, Taylor & Francis

    Dr R'afat M Nejem

  31. Enantioselective, Potentiometric Membrane Electrodes for the Determination ofL-Pipecolic Acid in Serum

    Article • Electroanalysis, October 2004, Wiley

    Dr R'afat M Nejem

  32. Biosensors for the enantioselective analysis of pipecolic acid

    Article • Sensors and Actuators B Chemical, October 2003, Elsevier

    Dr R'afat M Nejem

  33. Diamond Paste Based Amperometric Biosensors for the Determination ofl- andd-Pipecolic Acid

    Article • Analytical Letters, January 2003, Taylor & Francis

    Dr R'afat M Nejem