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51

Enantioselective assay of S(+)-ibuprofen using enantioselective, potentiometric membrane electrodes based on maltodextrins

Raluca-Ioana Stefan-van Staden, Tumelo R. Mashile

Journal:

Sensors and Actuators B: Chemical

Year:

2006

Language:

english

File:

PDF, 125 KB

english, 2006

52

On-line assay of S-captopril using an amperometric biosensor/sequential injection system

Raluca-Ioana Stefan, Jacobus (Koos) F. van Staden, Hassan Y. Aboul-Enein

Journal:

Analytica Chimica Acta

Year:

2000

Language:

english

File:

PDF, 116 KB

english, 2000

53

On-line simultaneous determination of S- and R-perindopril using amperometric biosensors as detectors in flow systems

Raluca-Ioana Stefan, Jacobus F. van Staden, Ludwig Vusimuzi Mulaudzi, Hassan Y. Aboul-Enein

Journal:

Analytica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 131 KB

english, 2002

54

On-line determination of iron(II) and iron(III) using a spectrophotometric sequential injection system

Ludwig V. Mulaudzi, Jacobus F. van Staden, Raluca I. Stefan

Journal:

Analytica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 287 KB

english, 2002

55

Determination of chromium(III) and chromium(VI) by use of a spectrophotometric sequential injection system

Ludwig V Mulaudzi, Jacobus F van Staden, Raluca I Stefan

Journal:

Analytica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 187 KB

english, 2002

56

Simultaneous determination of l- and d-carnitine using a sequential injection analysis/amperometric biosensors system

Raluca-Ioana Stefan, Rahel Girmai Bokretsion, Jacobus F van Staden, Hassan Y Aboul-Enein

Journal:

Journal of Pharmaceutical and Biomedical Analysis

Year:

2003

Language:

english

File:

PDF, 210 KB

english, 2003

57

Biosensor for the enantioselective analysis of S-captopril

Raluca-Ioana Stefan, Camelia Bala, Hassan Y. Aboul-Enein

Journal:

Sensors and Actuators B: Chemical

Year:

2003

Language:

english

File:

PDF, 85 KB

english, 2003

58

Biosensors for the enantioselective analysis of pipecolic acid

Raluca-Ioana Stefan, R’afat Mahmoud Nejem, Jacobus Frederick van Staden, Hassan Y Aboul-Enein

Journal:

Sensors and Actuators B: Chemical

Year:

2003

Language:

english

File:

PDF, 68 KB

english, 2003

59

Simultaneous determination of l- and d-methotrexate using a sequential injection analysis/amperometric biosensors system

Raluca-Ioana Stefan, Rahel Girmai Bokretsion, Jacobus Frederick van Staden, Hassan Y Aboul-Enein

Journal:

Biosensors and Bioelectronics

Year:

2003

Language:

english

File:

PDF, 229 KB

english, 2003

60

Amperometric biosensors/sequential injection analysis system for simultaneous determination of S- and R-captopril

Raluca-Ioana Stefan, Jacobus (Koos) F van Staden, Hassan Y Aboul-Enein

Journal:

Biosensors and Bioelectronics

Year:

2000

Language:

english

File:

PDF, 96 KB

english, 2000

61

An on-line potentiometric sequential injection titration process analyser for the determination of acetic acid

J. van Staden, Mulalo G. Mashamba, Raluca I. Stefan

Journal:

Analytical and Bioanalytical Chemistry

Year:

2002

Language:

english

File:

PDF, 59 KB

english, 2002

62

New horizons in sequential injection kinetic analysis

J. van Staden, Raluca I. Stefan

Journal:

Analytical and Bioanalytical Chemistry

Year:

2002

Language:

english

File:

PDF, 144 KB

english, 2002

63

Diamond paste-based electrodes for determination of Cr(III) in pharmaceutical compounds

Raluca-Ioana Stefan, Semere Ghebru Bairu, Jacobus Frederick van Staden

Journal:

Analytical and Bioanalytical Chemistry

Year:

2003

Language:

english

File:

PDF, 207 KB

english, 2003

64

Macrocyclic antibiotics as chiral selectors in the design of enantioselective, potentiometric membrane electrodes for the determination ofS-flurbiprofen

Raluca-Ioana Stefan-van Staden, Jacobus F. van Staden, Hassan Y. Aboul-Enein

Journal:

Analytical and Bioanalytical Chemistry

Year:

2009

Language:

english

File:

PDF, 158 KB

english, 2009

65

Validation criteria for developing ion-selective membrane electrodes for analysis of pharmaceuticals

Raluca-Ioana Stefan, H. Y. Aboul-Enein

Journal:

Accreditation and Quality Assurance

Year:

1998

Language:

english

File:

PDF, 137 KB

english, 1998

66

Diamond paste-based electrodes for the determination of sildenafil citrate (Viagra)

Raluca-Ioana Stefan-van Staden, Jacobus F. van Staden, Hassan Y. Aboul-Enein

Journal:

Journal of Solid State Electrochemistry

Year:

2010

Language:

english

File:

PDF, 132 KB

english, 2010

67

Clinical improvement after treatment with VEGF165in patients with severe chronic lower limb ischaemia

Andrei Anghel, Bogdan Mut-Vitcu, Lorand Savu, Catalin Marian, Edward Seclaman, Raluca Iman, Adriana-Maria Neghina, Stefan I. Dragulescu

Journal:

The HUGO Journal

Year:

2007

Language:

english

File:

PDF, 314 KB

english, 2007

68

Enantioselective, potentiometric membrane electrode based on vancomycin: Its application for the determination of d-pipecolic acid

Alexander A. Rat’ko, Raluca-Ioana Stefan, Jacobus (Koos) F. van Staden, Hassan Y. Aboul-Enein

Journal:

Sensors and Actuators B: Chemical

Year:

2004

Language:

english

File:

PDF, 73 KB

english, 2004

69

Enantioanalysis of S-perindopril using different cyclodextrin-based potentiometric sensors

Kenneth I. Ozoemena, Raluca-Ioana Stefan, Jacobus F. van Staden, Hassan Y. Aboul-Enein

Journal:

Sensors and Actuators B: Chemical

Year:

2005

Language:

english

File:

PDF, 92 KB

english, 2005

70

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

Raluca-Ioana Stefan, R’afat M. Nejem

Journal:

Sensors and Actuators B: Chemical

Year:

2005

Language:

english

File:

PDF, 99 KB

english, 2005

71

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

Raluca-Ioana Stefan-van Staden, R’afat M. Nejem

Journal:

Sensors and Actuators B: Chemical

Year:

2006

Language:

english

File:

PDF, 135 KB

english, 2006

72

Enantioselective, potentiometric membrane electrodes based on cyclodextrins for the determination of l-histidine

Raluca-Ioana Stefan-van Staden, Luxolo Holo

Journal:

Sensors and Actuators B: Chemical

Year:

2007

Language:

english

File:

PDF, 149 KB

english, 2007

73

Determination of S-perindopril using a flow injection system with an amperometric biosensor

Raluca-Ioana Stefan, Jacobus (Koos) F. van Staden, Hassan Y. Aboul-Enein

Journal:

Sensors and Actuators B: Chemical

Year:

1999

Language:

english

File:

PDF, 131 KB

english, 1999

74

Determination of urinary oxalate using oxalate-selective membrane electrodes

Raluca-Ioana Stefan, Ioana Draghici, George-Emil Baiulescu

Journal:

Sensors and Actuators B: Chemical

Year:

2000

Language:

english

File:

PDF, 60 KB

english, 2000

75

MR-Imaging of teeth and periodontal apparatus: an experimental study comparing high-resolution MRI with MDCT and CBCT

Chiara Gaudino, Raluca Cosgarea, Sabine Heiland, Réka Csernus, Bruno Beomonte Zobel, Mirko Pham, Ti-Sun Kim, Martin Bendszus, Stefan Rohde

Journal:

European Radiology

Year:

2011

Language:

english

File:

PDF, 412 KB

english, 2011

76

Community Mental Health Centres Initiated by the South-Eastern Europe Stability Pact: Evaluation in Seven Countries

Priebe, Stefan, Matanov, Aleksandra, Demi, Neli, Blagovcanin Simic, Joka, Jovanovic, Sandra, Gajic, Milena, Radonic, Elizabeta, Bajraktarov, Stojan, Boderscova, Larisa, Konatar, Monika, Nica, Raluca,

Journal:

Community Mental Health Journal

Year:

2012

Language:

english

File:

PDF, 199 KB

english, 2012

77

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

Raluca-Ioana Stefan-van Staden, R’afat Mahmoud Nejem, Jacobus Frederick van Staden, Hassan Y. Aboul-Enein

Journal:

Biosensors and Bioelectronics

Year:

2012

Language:

english

File:

PDF, 191 KB

english, 2012

78

Amperometric dot-sensors based on zinc porphyrins for sildenafil citrate determination

Simona-Cornelia Balasoiu, Raluca-Ioana Stefan-van Staden, Jacobus Frederick van Staden, Rodica-Mariana Ion, Gabriel-Lucian Radu, Hassan Y. Aboul-Enein

Journal:

Electrochimica Acta

Year:

2011

Language:

english

File:

PDF, 742 KB

english, 2011

79

Determination of baclofen enantiomers in pharmaceutical formulations using maltodextrin-based enantioselective, potentiometric membrane electrodes

Alexander A. Rat'ko, Raluca-Ioana Stefan-van Staden

Journal:

Year:

2004

Language:

english

File:

PDF, 141 KB

english, 2004

80

Sequential injection spectrophotometric determination of etilefrine hydrochloride

Negussie W. Beyene, Jacobus F. van Staden, Raluca I. Stefan

Journal:

Year:

2004

Language:

english

File:

PDF, 273 KB

english, 2004

81

Determination of isoxsuprine hydrochloride by sequential injection visible spectrophotometry

Negussie W. Beyene, Jacobus F. Van Staden, Raluca-Ioana Stefan, Hassan Y. Aboul-Enein

Journal:

Year:

2005

Language:

english

File:

PDF, 296 KB

english, 2005

82

Determination of fluoride in toothpaste, effluent streams and natural and borehole water using a flow injection system with a fluoride-selective membrane electrode

Raluca-Ioana Stefan, Jacobus F van Staden, Hassan Y Aboul-Enein

Journal:

Pharmaceutica Acta Helvetiae

Year:

1999

Language:

english

File:

PDF, 60 KB

english, 1999

83

Simultaneous Determination of Creatine and Creatinine using Monocrystalline Diamond Paste–Based Amperometric Biosensors

Staden, Raluca‐Ioana Stefan‐van, Bokretsion, Rahel Girmai

Journal:

Analytical Letters

Year:

2006

Language:

english

File:

PDF, 79 KB

english, 2006

84

Moclobemide-selective membrane electrode and its pharmaceutical applications

Raluca-Ioana Stefan, George-Emil Baiulescu, Hassan Y. Aboul-Enein

Journal:

Year:

1996

Language:

english

File:

PDF, 386 KB

english, 1996

85

Genetic diversity of porcine circovirus type 2 (PCV2) in the Romanian wild boar population

Mihai A. Turcitu, Gerard J. Wellenberg, Gheorghe Barboi, Mario D. Codreanu, Vlad B. Vuta, Stefan Nicolae, Florica Barbuceanu, Handan Coste, Raluca Cioranu

Journal:

Research in Veterinary Science

Year:

2011

Language:

english

File:

PDF, 685 KB

english, 2011

86

Determination of l-carnitine using enantioselective, potentiometric membrane electrodes based on macrocyclic antibiotics

Alexander A Rat’ko, Raluca-Ioana Stefan, Jacobus (Koos) F van Staden, Hassan Y Aboul-Enein

Journal:

Year:

2004

Language:

english

File:

PDF, 83 KB

english, 2004

87

Utilization of maltodextrin based enantioselective, potentiometric membrane electrodes for the enantioselective assay of S-perindopril

Kenneth I. Ozoemena, Raluca-Ioana Stefan, Jacobus F. van Staden, Hassan Y. Aboul-Enein

Journal:

Year:

2004

Language:

english

File:

PDF, 88 KB

english, 2004

88

Simultaneous determination of l-thyroxine (l-T4), d-thyroxine (d-T4), and l-triiodothyronine (l-T3) using a sensors/sequential injection analysis system

Raluca-Ioana Stefan, Jacobus F. van Staden, Hassan Y. Aboul-Enein

Journal:

Year:

2004

Language:

english

File:

PDF, 73 KB

english, 2004

89

Diamond paste based electrodes for the determination of Pb(II) at trace concentration levels

Raluca-Ioana Stefan, Semere Ghebru Bairu

Journal:

Year:

2004

Language:

english

File:

PDF, 100 KB

english, 2004

90

Sequential injection spectrophotometric determination of iron as Fe(II) in multi-vitamin preparations using 1,10-phenanthroline as complexing agent

Zeriet O. Tesfaldet, Jacobus F. van Staden, Raluca I. Stefan

Journal:

Year:

2004

Language:

english

File:

PDF, 131 KB

english, 2004

91

Macrocyclic antibiotics as chiral selectors in the design of enantioselective, potentiometric membrane electrodes for the determination of l- and d-enantiomers of methotrexate

Alexander A. Rat’ko, Raluca-Ioana Stefan, Jacobus (Koos) F. van Staden, Hassan Y. Aboul-Enein

Journal:

Year:

2004

Language:

english

File:

PDF, 85 KB

english, 2004

92

Sequential injection spectrophotometric determination of trace amounts of iodide by its catalytic effect on the 4,4′-methylenebis(N,N-dimethylaniline)-chloramine-T reaction

Zeriet O. Tesfaldet, Jacobus F. van Staden, Raluca I. Stefan

Journal:

Year:

2004

Language:

english

File:

PDF, 136 KB

english, 2004

93

Spectrophotometric determination of magnesium in pharmaceutical preparations by cost-effective sequential injection analysis

Zeriet O. Tesfaldet, Jacobus F. van Staden, Raluca I. Stefan

Journal:

Year:

2004

Language:

english

File:

PDF, 149 KB

english, 2004

94

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

R’afat Mahmoud Nejem, Raluca-Ioana Stefan, Jacobus Frederick van Staden, Hassan Y. Aboul-Enein

Journal:

Year:

2005

Language:

english

File:

PDF, 74 KB

english, 2005

95

Enantioselective potentiometric membrane electrodes based on α-, β- and γ-cyclodextrins as chiral selectors for the assay of l-proline

Kenneth I. Ozoemena, Raluca-Ioana Stefan

Journal:

Year:

2005

Language:

english

File:

PDF, 97 KB

english, 2005

96

Sequential injection spectrophotometric determination of ritodrine hydrochloride using 4-aminoantipyrine

Jacobus F. van Staden, Negussie W. Beyene, Raluca-Ioana Stefan, Hassan Y. Aboul-Enein

Journal:

Year:

2005

Language:

english

File:

PDF, 218 KB

english, 2005

97

Enantioselective, potentiometric membrane electrodes based on cyclodextrins: Application for the determination of R-baclofen in its pharmaceutical formulation

Raluca-Ioana Stefan van Staden, Alexander A. Rat’ko

Journal:

Year:

2006

Language:

english

File:

PDF, 153 KB

english, 2006

98

Enantioselective potentiometric membrane electrodes based on C60 fullerene and its derivatives for the assay of l-Histidine

Raluca-Ioana Stefan-van Staden, Bhajan Lal, Luxolo Holo

Journal:

Year:

2007

Language:

english

File:

PDF, 181 KB

english, 2007

99

Application of porphyrins in flow-injection analysis: A review

Jacobus F. van Staden, Raluca I. Stefan-van Staden

Journal:

Year:

2010

Language:

english

File:

PDF, 310 KB

english, 2010

100

Enantioanalysis of R-deprenyl based on its molecular interaction with C70 fullerenes

Raluca-Ioana Stefan-van Staden

Journal:

Year:

2010

Language:

english

File:

PDF, 633 KB

english, 2010