Yazar "Uysal, Ülkü Dilek" için listeleme
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Bazı fenolik asit bileşiklerinin kapiler elektroforez yöntemi ile tayini
Akkan, Ayşe Ceren (Anadolu Üniversitesi, 2008)Bu çalışmada, fenolik asitlerin tayini için Kapiler elektroforez (CE) metodu geliştirilmiştir. Bu metod, toplam uzunluğu 75 cm, etkin uzunluğu 25 cm ve iç çapı 75 mm olan çıplak silika kapiler kolon kullanılarak 20 mM %10 ... -
Bazı Flavonoidlerin Yarı-Deneysel Çalışması
Kurt, Gürkan; Uysal, Ülkü Dilek; Berber, Halil (2015)Bu çalışmada, altı flavonol-glikozit ve tautomerlerinin kararlılık, reaktivite, geometri, nükleofilisite, muhtemel H-bağları ve enerji gibi bazı teorik özellikleri MOPAC 2012 paket programı ile PM6 ve PM7 yarı deneysel ... -
Calculation of Acidity Constants of Azo Dyes Derived 4-(Phenyldiazenyl)Benzene-1,3-Diol By Dft Method
Berber, Halil; Uysal, Ülkü Dilek (2015)Bu çalışmada, 4-(phenyldiazenyl) benzene-1,3-diolden türetilmiş altı azo boyar maddenin asitlik sabitleri Gaussian09 [1] program (B3LYP/6-311++G(d,p)) (DFT metodu) ile hesaplanmıştır.[2]. Elde edilen teorik veriler deneysel ... -
Determination of DNA in Certain Salvia Species by Capillary Gel Electrophoresis
Öncü-Kaya, Elif Mine; Uysal, Ülkü Dilek; Öztürk, Nilgün; Cenkci, Süleyman; Tunçel, Muzaffer (Taylor & Francis Inc, 2015)This article presents a newly developed capillary gel electrophoresis (CGE) using dynamic coating with hydroxyethylcellulose methodology for the separation of fourteen standard DNA fragments and determination of RAPD-PCR ... -
Determination of Folic Acid by CE in Various Cultivated Variety of Lentils
Uysal, Ülkü Dilek; Öncü Kaya, Elif Mine; Tunçel, Muzaffer (Springer Heidelberg, 2010)A simple extraction and determination method for folic acid (FA) in lentil samples was developed employing capillary electrophoresis. The analysis was performed in a 75 mu m ID fused silica capillary using a running buffer ... -
Determination of naproxen in tablets by using first derivative potentiometry
Uysal, Ülkü Dilek; Tunçel, Muzaffer (2004)Bu çalışmada, naproksen sodyumun potansiyometrik tayini tanıtılmaktadır. Naproksenin tayini için en iyi çözücü sistemi, sodyum klorür ilavesiyle 0,1 iyonik şiddete ayarlı % 20 etanol (h/h) olarak bulundu. Aktif maddenin ... -
Determination of parabens in pharmaceutical and cosmetic products by capillary electrophoresis
Uysal, Ülkü Dilek; Güray, T. (Maik Nauka/Interperiodica/Springer, 2008)A validated capillary electrophoresis method for the determination of parabens-methyl, ethyl, propyl, and butyl is described. The optimum results were obtained by the use of a run buffer containing 20 mM borate buffer (pH ... -
Determination of Rosmarinic Acid by High-Performance Liquid Chromatography and Its Application to Certain Salvia Species and Rosemary
Öztürk, Nilgün; Tunçel, Muzaffer; Uysal, Ülkü Dilek; Öncü-Kaya, Elif Mine; Koyuncu, Onur (Springer, 2011)This study describes a method development for the determination of rosmarinic acid (RA) by using a gradient high-performance liquid chromatography (HPLC) and its application to certain plant materials. The analysis was ... -
Determination of Zearalenone By the Capillary Zone Electrophoresis-Uv Detection and Its Application to Poultry Feed and Cereals
Güray, Tufan; Tunçel, Muzaffer; Uysal, Ülkü Dilek; Öncü-Kaya, Elif Mine (Taylor & Francis Inc, 2013)A capillary zone electrophoretic method for the determination of zearalenone is described in this study. In the separation, a run buffer consisting of 20mM sodium tetraborate at pH 9.0 with 15% acetonitrile applying 15kV, ... -
Examination of changes in certain vitamins in baby foods by capillary electrophoresis
Bu çalışma, bebek mamalarının paketin açıldığı birinci ve onbeşinci günlerdeki d-pantotenat ve niasinin değişiminin yeni bir kapiler elektroforetik yöntemle zamana bağımlı olarak değişimini tanıtmaktadır. Sekiz numunede ... -
Faiz oranındaki bir artış cari işlemler açığını artırır mı?
Cari işlemler açığı, günümüzde ülke ekonomilerinin karşı karşıya olduğu önemli sorunlardan biri haline gelmiştir. Türkiye Cumhuriyeti Merkez Bankası (TCMB) küresel krizden sonra cari işlemler açığında meydana gelen hızlı ... -
HPLC fluorescence determination of ochratoxin A utilizing a double internal standard and its application to poultry feed
Tunçel, Muzaffer; Öncü Kaya, Elif Mine; Uysal, Ülkü Dilek; Güray, Tufan (Scientific Technical Research Council Turkey-Tubitak, 2015)A validated liquid chromatography method employing a fluorescence detector for the determination of ochratoxin A (OTA) was developed with double internal standard and it was applied to ten different poultry feeds. The ... -
HPLC fluorescence determination of ochratoxin A utilizing a double internal standard and its application to poultry feed
Abstract: A validated liquid chromatography method employing a fluorescence detector for the determination of ochratoxin A (OTA) was developed with double internal standard and it was applied to ten different poultry feeds. ... -
Kapiler jel elektroforez yöntemiyle salvia türlerinde DNA tayini
Öncü, Elif Mine (Anadolu Üniversitesi, 2013)Bu çalışmada, Türkiye Florasında geniş yayılış gösteren ve pek çok endemik türe sahip olan Lamiaceae familyasına ait 10 farklı Salvia (adaçayı) türünün agaroz jel elektroforez ve kapiler jel elektroforez yöntemleri ile DNA ... -
Nikelin spektrofotometrik metotla tayini
Polat, Dilek, [tarih] (Anadolu Üniversitesi, 2004)Bu çalışmada 2,2',3,4-tetrahidroksi-3'-sülfo-5'-nitroazobenzen (tetrahidroksiazon SN) ligandı ile Ni(II) iyonunun sulu ortamda renkli kompleksi oluşturularak bir spektrofotometrik tayin metodu geliştirilmiştir. Bu kompleksin ... -
A Rapid Determination of Patulin Using Capillary Zone Electrophoresis and its Application to Analysis of Apple Juices
Güray, Tufan; Tunçel, Muzaffer; Uysal, Ülkü Dilek (Oxford University Press Inc, 2013)This study describes a capillary zone electrophoretic method for the determination of patulin. An optimum run buffer was found to be 25 mM of sodium tetraborate and 10% acetonitrile (v/v) at pH 10. Optimum conditions were ... -
Rapid direct spectrophotometric determination of zirconium(IV) in alloys with 2,2 ',3,4-tetrahydroxy-3 '-sulpho-5 '-carboxyazobenzene reagent
Uysal, Ülkü Dilek; Hüseyinli, A. Ali; Güray, Tufan (Natl Inst Science Communication-Niscair, 2011)In this study, 2, 2, 3, 4-tetrahydroxy-3'-sulpho-5'-carboxyazobenzene (tetrahydroxyazon SC) has been synthesized for the first time and used for direct spectrophotometric determination of zirconium(IV). Tetrahydroxyazon ... -
Rapid direct spectrophotometric determination of zirconium(IV) in alloys with 2,2/,3,4-tetrahydroxy-3/-sulpho-5/-carboxyazobenzene reagent
In this study, 2, 2', 3, 4-tetrahydroxy-3'-sulpho-5'-carboxyazobenzene (tetrahydroxyazon SC) has been synthesized for the first time and used for direct spectrophotometric determination of zirconium(IV). Tetrahydroxyazon ... -
A Semi-Empirical and Density Functional Theory Study of 2,2 ',3,4-Tetrahydroxy-3 '-sulpho Azobenzene Derivatives and Their Zirconium Complexes
Uysal, Ülkü Dilek (Asian Journal Of Chemistry, 2013)In this study, certain theoretical properties of three tetrahydroxyazo derivatives and their zirconium complexes, such as stability, reactivity, geometry and energy have been calculated by MOPAC2009 with the PM6 method and ... -
A semi-empirical and density functional theory study of 2,2',3,4-tetrahydroxy-3'-sulpho azobenzene derivatives and their zirconium complexes
Uysal, Ülkü Dilek (2013)In this study, certain theoretical properties of three tetrahydroxyazo derivatives and their zirconium complexes, such as stability, reactivity, geometry and energy have been calculated by MOPAC2009 with the PM6 method and ...
