Prof. FEYYAZ ONUR

PALABIYIK İ. M. , ÇAĞLAYAN M. G. , ONUR F.

Journal of Analytical Chemistry, vol.67, no.1, pp.56-63, 2012 (Journal Indexed in SCI)

Optimisation and validation of liquid chromatographic and partial least-squares-1 methods for simultaneous determination of enalapril maleate and nitrendipine in pharmaceutical preparations

ÇAĞLAYAN M. G. , PALABIYIK İ. M. , Bor M., ONUR F.

Chemical Papers, vol.65, no.6, pp.754-760, 2011 (Journal Indexed in SCI)

Multivariate optimization and validation of a CE method for simultaneous analysis of dorzolamide hydrochloride and timolol maleate in ophthalmic solution

Chromatographia, vol.73, no.5-6, pp.541-548, 2011 (Journal Indexed in SCI)

Liquid chromatographic and spectrophotometric determination of diflucortolone valerate and isoconazole nitrate in creams

Karacan E., ÇAĞLAYAN M. G. , PALABIYIK İ. M. , ONUR F.

Journal of AOAC International, vol.94, no.1, pp.128-135, 2011 (Journal Indexed in SCI)

Chemometric methods for simultaneous quantification of lactic, malic and fumaric acids

Sokullu E., PALABIYIK İ. M. , ONUR F. , BOYACI İ. H.

Engineering in Life Sciences, vol.10, no.4, pp.297-303, 2010 (Journal Indexed in SCI)

Development and validation of spectrophotometric and high-performance column liquid chromatographic methods for the simultaneous determination of dienogest and estradiol valerate in pharmaceutical preparations

ÇAĞLAYAN M. G. , Paibivik I. M. , ONUR F.

Journal of AOAC International, vol.93, no.3, pp.862-868, 2010 (Journal Indexed in SCI Expanded)

Multivariate optimization and validation of a capillary electrophoresis method for the simultaneous determination of dextromethorphan hydrobromur, phenylephrine hydrochloride, paracetamol and chlorpheniramine maleate in a pharmaceutical preparation using response surface methodology

Özbakan H., Murat Palabiyik I., Gökhan Çaǧlayan M., ONUR F.

Analytical Sciences, vol.26, no.8, pp.853-859, 2010 (Journal Indexed in SCI)

Spectrophotometric and liquid chromatographic determination of acemetacin in pharmaceutical formulations Asemetasin'in farmasötik preparatlarda spektrofotometrik ve sıvı kromatografik yöntemlerle miktar tayini

Turkish Journal of Pharmaceutical Sciences, vol.6, no.3, pp.163-176, 2009 (Journal Indexed in SCI Expanded)

Spectrophotometric and high performance liquid chromatographic determination of fexofenadine hydrochloride in pharmaceutical formulations

Kozan I., PALABIYIK İ. M. , Karacan E., ONUR F.

Turkish Journal of Pharmaceutical Sciences, vol.5, no.3, pp.175-189, 2008 (Journal Indexed in SCI Expanded)

Spectrophotometric determination of amoxicillin in pharmaceutical formulations

Ünal K., PALABIYIK İ. M. , Karacan E., ONUR F.

Turkish Journal of Pharmaceutical Sciences, vol.5, no.1, pp.1-15, 2008 (Journal Indexed in SCI Expanded)

Simultaneous spectrophotometric determination of ezetimibe and simvastatin in pharmaceutical preparations using chemometric techniques

PALABIYIK İ. M. , ONUR F. , Yardimci C., Özaltin N.

Quimica Nova, vol.31, no.5, pp.1121-1124, 2008 (Journal Indexed in SCI)

Simultaneous spectrophotometry determination of pseudoephedrine sulfate and dexbrompheniramine maleate in pharmaceutical preparations using partial least squares regression, principal component regression and artificial neural networks

PALABIYIK İ. M. , Onur F.

Chemia Analityczna, vol.53, no.3, pp.401-416, 2008 (Journal Indexed in SCI Expanded)

Simultaneous spectrophotometric determination of pseudoephedrine sulfate and dexbrompheniramine maleate in pharmaceutical preparations using partial least squares regression, principal component regression and artificial neural networks

CHEMIA ANALITYCZNA, vol.53, no.3, pp.401-416, 2008 (Journal Indexed in SCI)

The simultaneous determination of phenylephrine hydrochloride, paracetamol, chlorpheniramine maleate and dextromethorphan hydrobromide in pharmaceutical preparations

Chromatographia, vol.66, no.SUPPL. 1, 2007 (Journal Indexed in SCI)

Liquid chromatographic and spectrophotometric determination of diflucortolone valerate and chlorquinaldol in creams

PALABIYIK İ. M. , Asan D., ONUR F.

Journal of Food and Drug Analysis, vol.15, no.2, pp.145-150, 2007 (Journal Indexed in SCI Expanded)

Spectrophotometric determination of acetaminophen and chlorzoxazone in tablets by multivariate calibration techniques

DİNÇ E., Ozdemir A., ONUR F. , Bǎleanu D., AKSOY H., Yücesoy C.

Revista de Chimie, vol.57, no.4, pp.368-373, 2006 (Journal Indexed in SCI)

Liquid chromatographic and spectrophotometric determination of phenazopyridine hydrochloride, ampicilline trihydrate, and nitrofurantoine in pharmaceutical preparations

Analytical Letters, vol.37, no.10, pp.2125-2150, 2004 (Journal Indexed in SCI)

Simultaneous spectrophotometric determination of pseudoephedrine hydrochloride and ibuprofen in a pharmaceutical preparation using ratio spectra derivative spectrophotometry and multivariate calibration techniques

PALABIYIK İ. M. , DİNÇ E., ONUR F.

Journal of Pharmaceutical and Biomedical Analysis, vol.34, no.3, pp.473-483, 2004 (Journal Indexed in SCI)

Simultaneous spectrophotometric determination of cyproterone acetate and estradiol valerate in pharmaceutical preparations by ratio spectra derivative and chemometric methods

DİNÇ E., Yücesoy C., PALABIYIK İ. M. , ÜSTÜNDAĞ Ö., ONUR F.

Journal of Pharmaceutical and Biomedical Analysis, vol.32, no.3, pp.539-547, 2003 (Journal Indexed in SCI)

Spectrophotometric multicomponent determination of sunset yellow, tartrazine and allura red in soft drink powder by double divisor-ratio spectra derivative, inverse least-squares and principal component regression methods

DİNÇ E., BAYDAN E., Kanbur M., ONUR F.

Talanta, vol.58, no.3, pp.579-594, 2002 (Journal Indexed in SCI)

Simultaneous spectrophotometric determination of mefenamic acid and paracetamol in a pharmaceutical preparation using ratio spectra derivative spectrophotometry and chemometric methods

DİNÇ E., Yücesoy C., ONUR F.

Journal of Pharmaceutical and Biomedical Analysis, vol.28, no.6, pp.1091-1100, 2002 (Journal Indexed in SCI)

Simultaneous spectrophotometric determination of chlorphenoxamine hydrochloride and caffeine in a pharmaceutical preparation using first derivative of the ratio spectra and chemometric methods

DİNÇ E., Palabyk I., Üstünda Ö., Yurtsever F., ONUR F.

Journal of Pharmaceutical and Biomedical Analysis, vol.28, no.3-4, pp.591-600, 2002 (Journal Indexed in SCI)

Simultaneous spectrophotometric analysis of codeine phosphate, acetylsalicylic acid, and caffeine in tablets by inverse least-squares and principal component regression techniques

DİNÇ E., Baleanu D., ONUR F.

Analytical Letters, vol.35, no.3, pp.545-558, 2002 (Journal Indexed in SCI)

Chemometric quantitative analysis of pyridoxine HCl and thiamine HCl in a vitamin combination by principal component analysis, classical least squares, and inverse least squares techniques

DİNÇ E., Bǎleanu D., ONUR F.

Spectroscopy Letters, vol.34, no.3, pp.279-288, 2001 (Journal Indexed in SCI)

Derivative ratio spectra-zero crossing spectrophotometry and LC method applied to the quantitative determination of paracetamol, propyphenazone and caffeine in ternary mixtures

DİNÇ E., Kökdil G., ONUR F.

Journal of Pharmaceutical and Biomedical Analysis, vol.26, no.5-6, pp.769-778, 2001 (Journal Indexed in SCI)

Determination of astemizole in pharmaceutical preparations using spectrophotometric methods

Güngör S., ONUR F.

Journal of Pharmaceutical and Biomedical Analysis, vol.25, no.3-4, pp.511-521, 2001 (Journal Indexed in SCI)

Spectrophotometric multicomponent analysis of a mixture of metamizol, acetaminophen and caffeine in pharmaceutical formulations by two chemometric techniques

DİNÇ E., Baleanu D., ONUR F.

Journal of Pharmaceutical and Biomedical Analysis, vol.26, no.5-6, pp.949-957, 2001 (Journal Indexed in SCI)

A comparison of matrix resolution method, ratio spectra derivative spectrophotometry and HPLC method for the determination of thiamine HCl and pyridoxine HCl in pharmaceutical preparation

DİNÇ E., Kökdil G., ONUR F.

Journal of Pharmaceutical and Biomedical Analysis, vol.22, no.6, pp.915-923, 2000 (Journal Indexed in SCI)

Simultaneous determination of pseudoephedrine sulfate, dexbrompheniramine maleate and loratadine in pharmaceutical preparations using derivative spectrophotometry and ratio spectra derivative spectrophotometry

ONUR F. , Yücesoy C., Dermiş S., Kartal M., Kökdil G.

Talanta, vol.51, no.2, pp.269-279, 2000 (Journal Indexed in SCI)

Application of the ratio spectra derivative spectrophotometry and Vierordt's method to quantitative analysis of paracetamol and metamizol in a pharmaceutical formulation

Scientia Pharmaceutica, vol.67, no.1, pp.57-68, 1999 (Journal Indexed in SCI Expanded)

Comparison of the ratio spectra derivative spectrophotometry, derivative spectrophotometry and Vierordt's method applied to quantitative analysis of pseudoephedrine hydrochloride and triprolidine hydrochloride in tablets

S.T.P. Pharma Sciences, vol.8, no.3, pp.203-208, 1998 (Journal Indexed in SCI)

Application of a new spectrophotometric method for the analysis of a ternary mixture containing metamizol, paracetamol and caffeine in tablets

Analytica Chimica Acta, vol.359, no.1-2, pp.93-106, 1998 (Journal Indexed in SCI)

Influence of swelling degree on release of nicardipine hydrochloride from acrylic microspheres prepared by solvent evaporation method

YÜKSEL N., DİNÇ E., ONUR F. , Baykara T.

Pharmaceutical Development and Technology, vol.3, no.1, pp.115-121, 1998 (Journal Indexed in SCI Expanded)

Comparative study of the ratio spectra derivative spectrophotometry, derivative spectrophotometry and Vierordt's method applied to the analysis of oxfendazole and oxyclozanide in a veterinary formulation

Analusis, vol.25, no.3, pp.55-59, 1997 (Journal Indexed in SCI)

Simultaneous determination of rifamycin SV sodium and lidocaine hydrochloride in injection preparations by first derivative UV spectrophotometry

ONUR F. , Güngör Ş.

Scientia Pharmaceutica, vol.65, no.3, pp.155-163, 1997 (Journal Indexed in SCI Expanded)

Simultaneous determination of benazepril hydrochloride and hydrochlorothiazide in tablets by spectrophotometric methods

Analusis, vol.25, no.5, pp.161-163, 1997 (Journal Indexed in SCI Expanded)

Application of derivative and ratio spectra derivative spectrophotometry for the determination of pseudoephedrine hydrochloride and acrivastine in capsules

Analytical Letters, vol.30, no.6, pp.1179-1191, 1997 (Journal Indexed in SCI)

Simultaneous determination of analgine and paracetamol in tablets by spectrophotometric methods

Analytical Letters, vol.30, no.6, pp.1201-1210, 1997 (Journal Indexed in SCI)

Three new spectrophotometric methods for simultaneous determination of hydrochlorothiazide and amiloride hydrochloride in sugar-coated tablets

Analytical Letters, vol.30, no.8, pp.1503-1515, 1997 (Journal Indexed in SCI Expanded)

Four new spectrophotometric methods for simultaneous determination of niclosamide and thiabendazole in tablets

Scientia Pharmaceutica, vol.64, no.2, pp.151-172, 1996 (Journal Indexed in SCI Expanded)

Simultaneous spectrophotometric determination of analgin and lidocaine hydrochloride in injection solutions

S.T.P. Pharma Sciences, vol.6, no.3, pp.216-220, 1996 (Journal Indexed in SCI)

Simultaneous determination of active ingredients in pharmaceutical preparations containing chlordiazepoxide by first derivative UV spectrophotometry

Scientia Pharmaceutica, vol.64, no.1, pp.57-69, 1996 (Journal Indexed in SCI Expanded)

Simultaneous determination of cilazapril and hydrochlorothiazide in tablets by spectrophotometric methods

Analytical Letters, vol.29, no.11, pp.1963-1974, 1996 (Journal Indexed in SCI Expanded)

Spectrophotometric simultaneous determination of analgin and hyoscine n-butyl bromide in sugar-coated tablets

Analytical Letters, vol.29, no.3, pp.369-380, 1996 (Journal Indexed in SCI Expanded)

Spectrophotometric simultaneous analysis of analgin - Adamon mixture in injection preparations

Acar N., ONUR F.

Analytical Letters, vol.29, no.5, pp.763-773, 1996 (Journal Indexed in SCI Expanded)

Simultaneous determination of carbinoxamine maleate and triamcinolone acetonide in tablets by spectrophotometric methods

ONUR F. , ERK N.

S.T.P. Pharma Pratiques, vol.5, no.6, pp.476-480, 1995 (Journal Indexed in SCI)

Simultaneous determination of caffeine and meclizine dihydrochloride in sugar-coated tablets

Analytical Letters, vol.28, no.14, pp.2521-2534, 1995 (Journal Indexed in SCI)

Spectrophotometric determination of analgin and phenobarbital in a pharmaceutical preparation

ACAR N., ONUR F.

Scientia Pharmaceutica, vol.63, no.3, pp.207-222, 1995 (Journal Indexed in SCI Expanded)

Spectrophotometric determination of active ingredients in tablets containing meclizine hydrochloride

Scientia Pharmaceutica, vol.63, no.2, pp.113-126, 1995 (Journal Indexed in SCI Expanded)

Simultaneous determination of active ingredients in suppositories containing paracetamol by first derivative UV spectrophotometry

S.T.P. Pharma Sciences, vol.5, no.2, pp.152-155, 1995 (Journal Indexed in SCI)

SPECTROPHOTOMETRIC DETERMINATION OF NICLOSAMIDE AND THIABENDAZOLE IN TABLETS

ONUR F. , TEKIN N.

ANALYTICAL LETTERS, vol.27, no.12, pp.2291-2301, 1994 (Journal Indexed in SCI)

BASAL AND HISTAMINE-INDUCED GASTRIC-ACID SECRETION IN ALLOXAN DIABETIC RATS

ÖZÇELİKAY A. T. , ALTAN V., YILDIZOGLUARI N., ALTINKURT O., ONUR F. , OZTURK Y.

GENERAL PHARMACOLOGY, vol.24, no.1, pp.121-126, 1993 (Journal Indexed in SCI)

Simultaneous determination of methylene blue, hexamethylene tetramine and resorcinol in pharmaceutical formulations by first-derivative UV spectrophotometry

Palabiyik I. M. , ONUR F.

International Journal of Pharmaceutics, vol.78, no.1-3, pp.89-91, 1992 (Journal Indexed in SCI)

Articles Published in Other Journals

Spectrophotometric and liquid chromatographic determination of acemetacin in pharmaceutical formulations

HAKAN Ö., PALABIYIK İ. M. , ÇAĞLAYAN M. G. , ONUR F.

TURKISH JOURNAL OF PHARMACEUTICAL SCIENCES, vol.6, no.3, pp.163-176, 2009 (Refereed Journals of Other Institutions)

Simultaneous spectrophotometric determination of pseudoephedrine sulphate and loratadine in a pharmaceutical preparation using chemometric techniques Bi̇r farmasöti̇k preparatta psödoefedri̇n sülfat ve loratadi̇n'i̇n kemometri̇k tekni̇kler kullanilarak ayni anda spektrofotometri̇k mi̇ktar tayi̇nleri̇

Ankara Universitesi Eczacilik Fakultesi Dergisi, vol.36, no.3, pp.171-182, 2008 (Refereed Journals of Other Institutions)

Simultaneous determination of rifamycinSV and lidocaine hydrochloride in injection preparations

ONUR F. , Güngör Ş.

SCIENTIA PHARMACEUTICA, vol.65, pp.155-164, 1997 (Refereed Journals of Other Institutions)

Simultaneous determination of caffeine and chlorphenoxamine hydrochloride in mixture by first derivative spectrophotometry

Gazi Universitesi Eczacilik Fakultesi Dergisi, vol.12, no.1, pp.63-72, 1995 (Refereed Journals of Other Institutions)

Simultaneous determination of cetrimide and chlorhexidine gluconate in antiseptic solutions by first derivative UV spectrophotometry

Gazi Universitesi Eczacilik Fakultesi Dergisi, vol.11, no.2, pp.135-142, 1994 (Refereed Journals of Other Institutions)

Simultaneous determination of niclosamide and thiabendazole in tablets by second derivative spectrophotometry

ONUR F. , Tekin N.

Gazi Universitesi Eczacilik Fakultesi Dergisi, vol.11, no.1, pp.33-42, 1994 (Refereed Journals of Other Institutions)

Spectrophotometric determination of meclizine dihydrochloride in tablets by ion-pair extraction with bromcresol green

Gazi Universitesi Eczacilik Fakultesi Dergisi, vol.10, no.1, pp.59-68, 1993 (Refereed Journals of Other Institutions)

Determination of ephedrine hydrochloride and nikethamide in combination by second derivative UV spectrophotometry

ACAR N., ONUR F.

Gazi Universitesi Eczacilik Fakultesi Dergisi, vol.8, no.2, pp.81-87, 1991 (Refereed Journals of Other Institutions)

Determination of active ingredients in pharmaceutical preparations containing phenazopyridine hydrochloride by first-derivative UV spectrophotometry

S.T.P. Pharma Sciences, vol.1, no.4, pp.276-279, 1991 (Refereed Journals of Other Institutions)

Quantitative determination of meclizine dihydrochloride, pyridoxine hydrochloride and nicotinic acid in their binary mixtures

Gazi Universitesi Eczacilik Fakultesi Dergisi, vol.7, no.2, pp.77-90, 1990 (Refereed Journals of Other Institutions)

Determination of acetaminophen by ion-pair extraction with rhodamine B

Gazi Universitesi Eczacilik Fakultesi Dergisi, vol.7, no.1, pp.25-32, 1990 (Refereed Journals of Other Institutions)

Quantitative determination of active ingredients in tablets containing isoniazid by first-derivative UV spectrophotometry

ONUR F. , DERMİŞ S.

Sciences Techniques et Pratiques Pharmaceutiques, vol.6, no.7, pp.464-468, 1990 (Refereed Journals of Other Institutions)

Determination of ephedrine hydrochloride in multicomponent formulations by third derivative ultraviolet spectrophotometry

Gazi Universitesi Eczacilik Fakultesi Dergisi, vol.6, no.2, pp.97-104, 1989 (Refereed Journals of Other Institutions)

Determination of paracetamol and phenprobamate in sugar-coated tablets by first derivative ultraviolet spectrophotometry

Gazi Universitesi Eczacilik Fakultesi Dergisi, vol.6, no.1, pp.23-30, 1989 (Refereed Journals of Other Institutions)

Determination of propyphenazone and caffeine in sugar-coated tablets by first derivative ultraviolet spectrophotometry