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51

Intramolecular cyclization reactions of pyrimidinium cations

A.E. Frissen, G. Geurtsen, A.T.M. Marcelis, H.C. van der Plas

Journal:

Year:

1990

Language:

english

File:

PDF, 858 KB

english, 1990

52

Effect of neighboring pyridinium groups on the basic hydrolysis of arylbenzoate esters

J.F.J. Engbersen, G. Geurtsen, D.A. De Bie, H.C. Van Der Plas

Journal:

Year:

1988

Language:

english

File:

PDF, 583 KB

english, 1988

53

Intramolecular Diels-Alder reactions of quaternary pyrazinium salts and protonated pyrazinium cations. Synthesis of annelated pyridinium salts and annelated pyridines.

Bart Geurtsen, Dick A. de Bie, Henk C. van der Plas

Journal:

Year:

1989

Language:

english

File:

PDF, 807 KB

english, 1989

54

Novel ring transformations of pyrazines by intramolecular diels-alder reactions

D.A. De Bie, A. Ostrowica, G. Geurtsen, H.C. Van Der Plas

Journal:

Year:

1988

Language:

english

File:

PDF, 573 KB

english, 1988

55

Chemoselective glycosylations of sterically hindered glycosyl acceptors

Richard Geurtsen, Geert-Jan Boons

Journal:

Tetrahedron Letters

Year:

2002

Language:

english

File:

PDF, 168 KB

english, 2002

56

Culture of primary human gingival fibroblasts on biodegradable membranes

G. Hillmann, A. Steinkamp-Zucht, W. Geurtsen, G. Gross, A. Hoffmann

Journal:

Year:

2002

Language:

english

File:

PDF, 583 KB

english, 2002

57

Ring transformations in reactions of heterocyclic compounds with nucleophiles (V): Conversion of pyrimidine into 5-ethyl-2-methylpyridine: (Preliminary communication)

H. C. van der Plas, H. Jongejan, G. Geurtsen, Miss M. C. Vollering

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1971

Language:

english

File:

PDF, 129 KB

english, 1971

58

Halogen migration in reactions of halogeno derivatives of some five-membered hetarenes with potassium amide in liquid ammonia (IV)

D. A. de Bie, H. C. van der Plas, G. Geurtsen, K. Nijdam

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1973

Language:

english

File:

PDF, 385 KB

english, 1973

59

Halogen migration and amination in reactions of halogeno derivatives of five-membered hetarenes with potassium amide in liquid ammonia

H. C. van der Plas, D. A. de Bie, G. Geurtsen, M. G. Reinecke, H. Wayne Adickes

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1974

Language:

english

File:

PDF, 368 KB

english, 1974

60

Ring transformations in reactions of heterocyclic halogeno compounds with nucleophiles (XXXVI). Conversion of 4-amino-3-halogenopyridazines into pyrazoles and of 4-amino-3,6-dihalogenopyridazines into 1,2,4-triazoles

D. E. Klinge, H. C. van der Plas, G. Geurtsen, A. Koudijs

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1974

Language:

english

File:

PDF, 421 KB

english, 1974

61

Novel ringtransformations of pyrimidines and pyridines by intramolecular inverse electron demand Diels-Alder reactions

A. E. Frissen, A. T. M. Marcelis, G. Geurtsen, D. A. de Bie, H. C. van der Plas

Journal:

Recueil des Travaux Chimiques des Pays-Bas

Year:

1987

Language:

english

File:

PDF, 178 KB

english, 1987

62

De gevolgen van traumatisch hersenletsel, een onderschat probleem in de huisartsenpraktijk?

MCJ Vugts, GJ Geurtsen, JD Martina, VF Voerman, MP Rulkens, AY Kuiper

Journal:

Huisarts en wetenschap

Year:

2005

Language:

dutch

File:

PDF, 102 KB

dutch, 2005

63

Tissue engineering - an exciting future

G. Hillmann, W. Geurtsen

Journal:

Clinical Oral Investigations

Year:

2001

Language:

english

File:

PDF, 9 KB

english, 2001

64

Influence of orthognathic surgery on periodontal tissues

K. Weinspach, I. Staufenbiel, H. Günay, W. Geurtsen, R. Schwestka-Polly, A.P. Demling

Journal:

Journal of Orofacial Orthopedics/Fortschritte der Kieferorthopädie

Year:

2011

Language:

english

File:

PDF, 799 KB

english, 2011

65

Morphogenetic Activity of Silica and Bio-silica on the Expression of Genes Controlling Biomineralization Using SaOS-2 Cells

Werner E. G. Müller, Alexandra Boreiko, Xiaohong Wang, Anatoli Krasko, Werner Geurtsen, Márcio Reis Custódio, Thomas Winkler, Lada Lukić-Bilela, Thorben Link, Heinz C. Schröder

Journal:

Calcified Tissue International

Year:

2007

Language:

english

File:

PDF, 438 KB

english, 2007

66

Assessment of the Impact of Two Different Isolation Methods on the Osteo/Odontogenic Differentiation Potential of Human Dental Stem Cells Derived from Deciduous Teeth

Athina Bakopoulou, Gabriele Leyhausen, Joachim Volk, Asterios Tsiftsoglou, Pavlos Garefis, Petros Koidis, Werner Geurtsen

Journal:

Calcified Tissue International

Year:

2011

Language:

english

File:

PDF, 1.15 MB

english, 2011

67

Light-microscopical investigation of the distribution of extracellular matrix molecules and calcifications in human dental pulps of various ages

G. Hillmann, W. Geurtsen

Journal:

Cell and Tissue Research

Year:

1997

Language:

english

File:

PDF, 1.77 MB

english, 1997

68

Effects of various storage media on surface hardness and structure of four polyacid-modified composite resins ("compomers")

J. Munack, H. Haubert, S. Dogan, W. Geurtsen

Journal:

Clinical Oral Investigations

Year:

2001

Language:

english

File:

PDF, 65 KB

english, 2001

69

Immunohistological and morphometric analysis of inflammatory cells in rapidly progressive periodontitis and adult periodontitis

G. Hillmann, S. Krause, A. Özdemir, S. Dogan, W. Geurtsen

Journal:

Clinical Oral Investigations

Year:

2001

Language:

english

File:

PDF, 339 KB

english, 2001

70

Effects of low-concentrated chlorhexidine on growth ofStreptococcus sobrinusand primary human gingival fibroblasts

S. Dogan, H. Günay, G. Leyhausen, W. Geurtsen

Journal:

Clinical Oral Investigations

Year:

2003

Language:

english

File:

PDF, 172 KB

english, 2003

71

Interfacial and surface characterization of two self-etching adhesive systems and a total-etch adhesive after bonding to ground and unground bovine enamel—a qualitative study

Gabriela Ibarra, Marcos A. Vargas, Werner Geurtsen

Journal:

Clinical Oral Investigations

Year:

2006

Language:

english

File:

PDF, 929 KB

english, 2006

72

Nicotine-induced alterations in human primary periodontal ligament and gingiva fibroblast cultures

Berna Alpar, Gabriele Leyhausen, Angela Sapotnick, Hüsamettin Günay, W. Geurtsen

Journal:

Clinical Oral Investigations

Year:

1998

Language:

english

File:

PDF, 844 KB

english, 1998

73

Biological aspects of root canal filling materials – histocompatibility, cytotoxicity, and mutagenicity

W. Geurtsen, G. Leyhausen

Journal:

Clinical Oral Investigations

Year:

1997

Language:

english

File:

PDF, 370 KB

english, 1997

74

Effects of extraction media upon fluoride release from a resin-modified glass-ionomer cement

W. Geurtsen, P. Bubeck, G. Leyhausen, F. Garcia-Godoy

Journal:

Clinical Oral Investigations

Year:

1998

Language:

english

File:

PDF, 71 KB

english, 1998

75

Effect on caries experience of a long-term preventive program for mothers and children starting during pregnancy

Hüsamettin Günay, Kristina Dmoch-Bockhorn, Yüce Günay, Werner Geurtsen

Journal:

Clinical Oral Investigations

Year:

1998

Language:

english

File:

PDF, 74 KB

english, 1998

76

Infection of primary human gingival fibroblasts byPorphyromonas gingivalisandPrevotella intermedia

S. Dogan, F. Gunzer, H. Guenay, G. Hillmann, W. Geurtsen

Journal:

Clinical Oral Investigations

Year:

2000

Language:

english

File:

PDF, 936 KB

english, 2000

77

The effect of N-acetyl-l-cysteine and ascorbic acid on visible-light-irradiated camphorquinone/N,N-dimethyl-p-toluidine-induced oxidative stress in two immortalized cell lines

D. Pagoria, W. Geurtsen

Journal:

Year:

2005

Language:

english

File:

PDF, 224 KB

english, 2005

78

t-butylation of quinazoline

D.A.de Bie, A. Nagel, H.C. van der Plas, G. Geurtsen, A. Koudijs

Journal:

Tetrahedron Letters

Year:

1979

Language:

english

File:

PDF, 201 KB

english, 1979

79

Proximo-cervical adaptation of Class II-composite restorations after thermocycling: a quantitative and qualitative study

M. SCHUCKAR, W. GEURTSEN

Journal:

Journal of Oral Rehabilitation

Year:

1997

Language:

english

File:

PDF, 15.88 MB

english, 1997

80

Lipoarabinomannan biosynthesis in Corynebacterineae: the interplay of two α(1→2)-mannopyranosyltransferases MptC and MptD in mannan branching

Arun K. Mishra, Karin Krumbach, Doris Rittmann, Ben Appelmelk, Vibha Pathak, Ashish K. Pathak, Jerome Nigou, Jeroen Geurtsen, Lothar Eggeling, Gurdyal S. Besra

Journal:

Molecular Microbiology

Year:

2011

Language:

english

File:

PDF, 1.08 MB

english, 2011

81

The mannose cap of mycobacterial lipoarabinomannan does not dominate the Mycobacterium–host interaction

B. J. Appelmelk, J. Den Dunnen, N. N. Driessen, R. Ummels, M. Pak, J. Nigou, G. Larrouy-Maumus, S. S. Gurcha, F. Movahedzadeh, J. Geurtsen, E. J. Brown, M. M. Eysink Smeets, G. S. Besra, P. T. J. Will

Journal:

Cellular Microbiology

Year:

2008

Language:

english

File:

PDF, 431 KB

english, 2008

82

Electrophysiological and morphological heterogeneity of neurons in slices of rat suprachiasmatic nucleus

C. M. A. Pennartz, M. T. G. De Jeu, A. M. S. Geurtsen, A. A. Sluiter, M. L. H. J. Hermes

Journal:

The Journal of Physiology

Year:

1998

Language:

english

File:

PDF, 1.73 MB

english, 1998

83

Enhanced NMDA receptor activity in retinal inputs to the rat suprachiasmatic nucleus during the subjective night

Cyriel M. A. Pennartz, Reinbert Hamstra, Alwin M. S. Geurtsen

Journal:

The Journal of Physiology

Year:

2001

Language:

english

File:

PDF, 355 KB

english, 2001

84

Biocompatibility Of Root Canal Filling Materials

Professor Werner Geurtsen

Journal:

Australian Endodontic Journal

Year:

2001

Language:

english

File:

PDF, 2.31 MB

english, 2001

85

Identification Of Second Canals In The Mesiobuccal Root Of Maxillary First And Second Molars Using Magnifying Loupes Or An Operating Microscope

Dr T. Schwarze, Dr C. Baethge, Dr T. Stecher, Professor W. Geurtsen

Journal:

Australian Endodontic Journal

Year:

2002

Language:

english

File:

PDF, 1019 KB

english, 2002

86

Diurnal modulation of pacemaker potentials and calcium current in the mammalian circadian clock

Pennartz, Cyriel M. A., de Jeu, Marcel T. G., Bos, Nico P. A., Schaap, Jeroen, Geurtsen, Alwin M. S.

Journal:

Year:

2002

Language:

english

File:

PDF, 356 KB

english, 2002

87

Inorganic Polyphosphate in Human Osteoblast-like Cells

Gabriele Leyhausen, Bernd Lorenz, Hua Zhu, Werner Geurtsen, Ralf Bohnensack, Werner E. G. Müller, Heinz C. Schröder

Journal:

Journal of Bone and Mineral Research

Year:

1998

Language:

english

File:

PDF, 251 KB

english, 1998

88

Unexpected Link between Lipooligosaccharide Biosynthesis and Surface Protein Release in Mycobacterium marinum

van der Woude, A. D., Sarkar, D., Bhatt, A., Sparrius, M., Raadsen, S. A., Boon, L., Geurtsen, J., van der Sar, A. M., Luirink, J., Houben, E. N. G., Besra, G. S., Bitter, W.

Journal:

Journal of Biological Chemistry

Year:

2012

Language:

english

File:

PDF, 2.74 MB

english, 2012

89

A mechanistic study on the amination of 2-chloro-3,5-dinitropyridine with liquid ammonia

De Bie, Dick A., Geurtsen, Bart, Berg, Iekje E., Van der Plas, Henk C.

Journal:

Journal of Organic Chemistry

Year:

1986

Language:

english

File:

PDF, 456 KB

english, 1986

90

ChemInform Abstract: Chemoselective Glycosylations. Part 1. Differences in Size of Anomeric Leaving Groups can be Exploited in Chemoselective Glycosylations.

G.-J. BOONS, R. GEURTSEN, D. HOLMES

Journal:

Year:

1995

File:

PDF, 32 KB

1995

91

Nuclear magnetic resonance data of pyrido[2,3-B] pyrazines and their σ-adducts with amide ion and water

A. Nagel, H. C. Van Der Plas, G. Geurtsen, A. Van Veldhuizen

Journal:

Journal of Heterocyclic Chemistry

Year:

1979

File:

PDF, 224 KB

1979

92

On the mechanism of the conversion of 6-chloropyrido[2,3-B]pyrazine into 1h-lmidazo[4,5-b] pyridine by potassium amide in liquid ammonia

A. Nagel, H. C. Van Der Plas, G. Geurtsen, A. Van Der Kuilen

Journal:

Journal of Heterocyclic Chemistry

Year:

1979

File:

PDF, 371 KB

1979

93

Spectroscopic evidence for the intermediacy of a 6-R-2,4-diazabicyclo-[3.1.0]hex-2-(3)ene in the photoisomerization of 4-R-1,4-(3,4)-dihydropyrimidines

R. E. Van Der Stoel, H. C. Van Der Plas, G. Geurtsen

Journal:

Journal of Heterocyclic Chemistry

Year:

1980

File:

PDF, 195 KB

1980

94

Brain Integration: holistische secundaire revalidatie bij mensen met een niet-aangeboren hersenletsel

Gert Geurtsen, M. Vughts, Juan Martina, Victor Voerman

Journal:

Year:

2004

Language:

dutch

File:

PDF, 214 KB

dutch, 2004

95

Chemical-biological interactions of NaF with three different cell lines and the caries pathogenStreptococcus sobrinus

S., Dogan, H., G&#x000FC, nay, G., Leyhausen, W., Geurtsen

Journal:

Clinical Oral Investigations

Year:

2002

Language:

english

File:

PDF, 65 KB

english, 2002

96

Comparison of the push-out strength of two fiber post systems dependent on different types of resin cements

Dimitrouli, Maria, Geurtsen, Werner, Lührs, Anne-Katrin

Journal:

Clinical Oral Investigations

Year:

2012

Language:

english

File:

PDF, 314 KB

english, 2012

97

Immunohistological determination of interleukin-1β in inflamed human gingival epithelium

G. Hillmann, B. Hillmann, W. Geurtsen

Journal:

Archives of Oral Biology

Year:

1995

Language:

english

File:

PDF, 796 KB

english, 1995

98

Arabinosyl nucleosides. XXXII. Mechanism of inhibition of L5178y mouse lymphoma cells by 9-β-D-arabinofuranosylguanine

W.E.G. Müller, W. Geurtsen, R. Beyer, D.K. Schuster, R.K. Zahn, J. Arendes

Journal:

Chemico-Biological Interactions

Year:

1981

Language:

english

File:

PDF, 743 KB

english, 1981

99

Comparative analysis of in vitro osteo/odontogenic differentiation potential of human dental pulp stem cells (DPSCs) and stem cells from the apical papilla (SCAP)

A. Bakopoulou, G. Leyhausen, J. Volk, A. Tsiftsoglou, P. Garefis, P. Koidis, W. Geurtsen

Journal:

Archives of Oral Biology

Year:

2011

Language:

english

File:

PDF, 2.96 MB

english, 2011

100

Additive effects of TEGDMA and hydrogenperoxide on the cellular glutathione content of human gingival fibroblasts

Joachim Volk, Gabriele Leyhausen, Sami Dogan, Werner Geurtsen

Journal:

Dental Materials

Year:

2007

Language:

english

File:

PDF, 303 KB

english, 2007