W.J Hayward Vermaak: search on Z-Library

The world's largest scientific articles store. 70,000,000+ articles for free.

Don't use scam websites

1

Spontaneous Oxidation of Methionine: Effect on the Quantification of Plasma Methionine Levels

Hendrik C Potgieter, Johan B Ubbink, Siegbert Bissbort, Megan J Bester, Johannes H Spies, W.J.Hayward Vermaak

Journal:

Analytical Biochemistry

Year:

1997

Language:

english

File:

PDF, 172 KB

english, 1997

2

Rapid high-performance liquid chromatographic assay for total homocysteine levels in human serum

Johan B. Ubbink, W.J. Hayward Vermaak, Siegbert Bissbort

Journal:

Journal of Chromatography B: Biomedical Sciences and Applications

Year:

1991

Language:

english

File:

PDF, 376 KB

english, 1991

3

Quantification of erythrocyte S-adenosyl-l-methionine levels and its application in enzyme studies

Jennifer Lagendijk, Johan B. Ubbink, W.J. Hayward Vermaak

Journal:

Journal of Chromatography B: Biomedical Sciences and Applications

Year:

1992

Language:

english

File:

PDF, 609 KB

english, 1992

4

Simple high-performance liquid chromatographic method to verify the direct barbituric acid assay for urinary cotinine

Johan B. Ubbink, Jennifer Lagendijk, W.H. Hayward Vermaak

Journal:

Journal of Chromatography B: Biomedical Sciences and Applications

Year:

1993

Language:

english

File:

PDF, 624 KB

english, 1993

5

High frequency of the apo ɛ4 allele in Khoi San from South Africa

C. Sandholzer, Rhena Delport, Hayward Vermaak, G. Utermann

Journal:

Year:

1995

Language:

english

File:

PDF, 331 KB

english, 1995

6

Will an Increased Dietary Folate Intake Reduce the Incidence of Cardiovascular Disease?

Dr. Johan B. Ubbink, Dr. Piet J. Becker, Dr. W. J. Hayward Vermaak

Journal:

Nutrition Reviews

Year:

1996

Language:

english

File:

PDF, 350 KB

english, 1996

7

The effect of blood sample aging and food consumption on plasma total homocysteine levels

Johan B. Ubbink, W.J.Hayward Vermaak, Annatjie van Der Merwe, Piet J. Becker

Journal:

Clinica Chimica Acta

Year:

1992

Language:

english

File:

PDF, 761 KB

english, 1992

8

Novel test and its automation for the determination of erythrocyte acetylcholinesterase and its application to organophosphate exposure

Siegbert Heinrich Bissbort, William James Hayward Vermaak, John Elias, Megan Jean Bester, Gurdeep Singh Dhatt, Joachim Karl Walter Pum

Journal:

Clinica Chimica Acta

Year:

2001

Language:

english

File:

PDF, 94 KB

english, 2001

9

Variability of post-methionine load plasma homocysteine assays

Johan B Ubbink, Piet J Becker, Rhena Delport, Megan Bester, Reiner Riezler, W.J.Hayward Vermaak

Journal:

Clinica Chimica Acta

Year:

2003

Language:

english

File:

PDF, 130 KB

english, 2003

10

The effect of Simvastatin on the plasma antioxidant concentrations in patients with hypercholesterolaemia

Johanna A. Human, Johan B. Ubbink, Johann J. Jerling, Rhena Delport, W.J.Hayward Vermaak, Hester H. Vorster, Jennifer Lagendijk, Hendrik C. Potgieter

Journal:

Clinica Chimica Acta

Year:

1997

Language:

english

File:

PDF, 116 KB

english, 1997

11

Antioxidant Vitamins and Coronary Artery Disease Risk in South African Males

Rhena Delport, Johan B Ubbink, Johanna A. Human, Piet J Becker, Dirk P Myburgh, WJ Hayward Vermaak

Journal:

Clinica Chimica Acta

Year:

1998

Language:

english

File:

PDF, 54 KB

english, 1998

12

Folate status, homocysteine metabolism, and methylene tetrahydrofolate reductase genotype in rural south african blacks with a history of pregnancy complicated by neural tube defects

Johan B. Ubbink, Arnold Christianson, Megan J. Bester, Margot I. Van Allen, Philip A. Venter, Rhena Delport, Henk J. Blom, Annatjie van der Merwe, Hendrik Potgieter, W.J.Hayward Vermaak

Journal:

Year:

1999

Language:

english

File:

PDF, 583 KB

english, 1999

13

Effect of magnesium supplementation on the fractional intestinal absorption of 45CaCl2 in women with a low erythrocyte magnesium concentration

Luisa E. Basso, Johan B. Ubbink, Rhena Delport, Johan Spies, W.J.Hayward Vermaak

Journal:

Year:

2000

Language:

english

File:

PDF, 51 KB

english, 2000

14

Homocysteine and ischaemic heart disease in the Caerphilly cohort

Johan B Ubbink, Ann M Fehily, Janet Pickering, Peter C Elwood, W.J Hayward Vermaak

Journal:

Atherosclerosis

Year:

1998

Language:

english

File:

PDF, 88 KB

english, 1998

15

Enzymes of Vitamin B6 Metabolism in Maternal and Cord Blood

JOHAN B. UBBINK, RHENA DELPORT, W. J. HAYWARD VERMAAK

Journal:

Annals of the New York Academy of Sciences

Year:

1990

Language:

english

File:

PDF, 107 KB

english, 1990

16

The Relationship between Vitamin B6 Metabolism, Asthma, and Theophylline Therapy

JOHAN B. UBBINK, W. J. HAYWARD VERMAAK, RHENA DELPORT, WILLEM J. SERFONTEIN, PETER BARTEL

Journal:

Annals of the New York Academy of Sciences

Year:

1990

Language:

english

File:

PDF, 523 KB

english, 1990

17

Vitamin Requirements for the Treatment of Hyperhomocysteinemia in Humans

Ubbink, Johan B., Vermaak, W. J. Hayward, van der Merwe, Annatjie, Becker, Piet J., Delport, Rhena, Potgieter, Hendrik C.

Journal:

Journal of Nutrition

Year:

1994

Language:

english

File:

PDF, 1.28 MB

english, 1994

18

Plasma Homocysteine Concentrations in a Population with a Low Coronary Heart Disease Prevalence

Ubbink, Johan B., Delport, Rhena, Vermaak, W. J. Hayward

Journal:

Journal of Nutrition

Year:

1996

Language:

english

File:

PDF, 481 KB

english, 1996

19

Inhibition of Pyridoxal Kinase by Methylxanthines

Ubbink, Johan B., Bissbort, Siegbert, Hayward, Vermaak, Delport, Rhena

Journal:

Year:

1990

Language:

english

File:

PDF, 468 KB

english, 1990

20

Comparison of Three Different Plasma Homocysteine Assays with Gas ChromatographyâMass Spectrometry

Ubbink, Johan B, Delport, Rhena, Riezler, Reiner, Vermaak, WJ Hayward

Journal:

Clinical Chemistry

Year:

1999

File:

PDF, 197 KB

1999

21

Analytical Quality of Near-Patient Blood Cholesterol and Glucose Determinations

du Plessis, Marita, Ubbink, Johan B, Vermaak, W J Hayward

Journal:

Clinical Chemistry

Year:

2000

File:

PDF, 199 KB

2000