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51

Liquid chromatography/atmospheric pressure ionization mass spectrometry with post-column liquid mixing for the efficient determination of partially oxidized polycyclic aromatic hydrocarbons

Sylvia Grosse, Thomas Letzel

Journal:

Journal of Chromatography A

Year:

2007

Language:

english

File:

PDF, 922 KB

english, 2007

52

Influence of buffer type and concentration on the peptide composition of trypsin hydrolysates of β-lactoglobulin

Seronei Chelulei Cheison, Elena Leeb, Thomas Letzel, Ulrich Kulozik

Journal:

Year:

2011

Language:

english

File:

PDF, 355 KB

english, 2011

53

26 kDa endochitinase from barley seeds: Real-time monitoring of the enzymatic reaction and substrate binding experiments using electrospray ionization mass spectrometry

Nicole Dennhart, Linda M.M. Weigang, Maho Fujiwara, Tamo Fukamizo, Karen Skriver, Thomas Letzel

Journal:

Journal of Biotechnology

Year:

2009

Language:

english

File:

PDF, 1.03 MB

english, 2009

54

Sensitive determination of G-protein-coupled receptor binding ligands by solid phase extraction–electrospray ionization–mass spectrometry

Thomas Letzel, Rico J.E. Derks, Cornelius T. Martha, André van Marle, Hubertus Irth

Journal:

Journal of Pharmaceutical and Biomedical Analysis

Year:

2006

Language:

english

File:

PDF, 305 KB

english, 2006

55

Dissection of glutathione conjugate turnover in yeast

Jana Wünschmann, Matthias Krajewski, Thomas Letzel, Eva M. Huber, Alexander Ehrmann, Erwin Grill, Klaus J. Lendzian

Journal:

Year:

2010

Language:

english

File:

PDF, 441 KB

english, 2010

56

Conformational features of calix[4]arenes with alkali metal cations: A quantum chemical investigation with density functional theory

Alexander B. Rozhenko, Wolfgang W. Schoeller, Matthias C. Letzel, Björn Decker, Ceno Agena, Jochen Mattay

Journal:

Journal of Molecular Structure: THEOCHEM

Year:

2005

Language:

english

File:

PDF, 703 KB

english, 2005

57

Influence of elevated pressure on the stability of bubbly flows

H.M. Letzel, J.C. Schouten, C.M. van den Bleek, R. Krishna

Journal:

Chemical Engineering Science

Year:

1997

Language:

english

File:

PDF, 414 KB

english, 1997

58

Characterization of regimes and regime transitions in bubble columns by chaos analysis of pressure signals

H.M. Letzel, J.C. Schouten, R. Krishna, C.M. van den Bleek

Journal:

Chemical Engineering Science

Year:

1997

Language:

english

File:

PDF, 990 KB

english, 1997

59

Gas hold-up and mass transfer in gas-lift reactors operated at elevated pressures

Martijn Letzel, Andrzej Stankiewicz

Journal:

Chemical Engineering Science

Year:

1999

Language:

english

File:

PDF, 187 KB

english, 1999

60

Separation and identification of polar degradation products of benzo[a]pyrene with ozone by atmospheric pressure chemical ionization–mass spectrometry after optimized column chromatographic clean-up

T Letzel, E Rosenberg, R Wissiack, M Grasserbauer, R Niessner

Journal:

Journal of Chromatography A

Year:

1999

Language:

english

File:

PDF, 221 KB

english, 1999

61

Functional group migration in benzaldoxime-O-n-propyl ether radical cation

Matthias C Letzel, Hans-Friedrich Grützmacher, Thomas Fürst, Klaus K Mayer, Wolfgang Wiegrebe

Journal:

International Journal of Mass Spectrometry

Year:

2002

Language:

english

File:

PDF, 242 KB

english, 2002

62

Association between overweight, obesity and self-perceived job insecurity in German employees

Eva Muenster, Heiko Rueger, Elke Ochsmann, Stephan Letzel, André M Toschke

Journal:

BMC Public Health

Year:

2011

Language:

english

File:

PDF, 216 KB

english, 2011

63

Gas-phase behavior of noncovalent transmembrane segment complexes

Linda M. M. Weigang, Dieter Langosch, Thomas Letzel

Journal:

Rapid Communications in Mass Spectrometry

Year:

2008

Language:

english

File:

PDF, 280 KB

english, 2008

64

Passive smoking under controlled conditions

L. C. Johnson, H. Letzell, J. Kleinschmidt

Journal:

International Archives of Occupational and Environmental Health

Year:

1985

Language:

english

File:

PDF, 606 KB

english, 1985

65

Early reaction type allergies and diseases of the respiratory passages in employees from persulphate production

R. Wrbitzky, H. Drexler, S. Letzel

Journal:

International Archives of Occupational and Environmental Health

Year:

1995

Language:

english

File:

PDF, 444 KB

english, 1995

66

Occupational chronic exposure to organic solvents

B. Söhnlein, S. Letzel, D. Weltle, H. W. Rüdiger, J. Angerer

Journal:

International Archives of Occupational and Environmental Health

Year:

1993

Language:

english

File:

PDF, 556 KB

english, 1993

67

Book reviews

K. H. Schaller, S. Letzel

Journal:

International Archives of Occupational and Environmental Health

Year:

1996

Language:

english

File:

PDF, 79 KB

english, 1996

68

Detection and clinical relevance of a type I allergy with occupational exposure to hexahydrophthalic anhydride and methyltetrahydrophthalic anhydride

H. Drexler, A. Weber, S. Letzel, G. Kraus, K. H. Schaller, G. Lehnert

Journal:

International Archives of Occupational and Environmental Health

Year:

1994

Language:

english

File:

PDF, 525 KB

english, 1994

69

Early institution of bromocriptine in Parkinson's disease inhibits the emergence of levodopa-associated motor side effects. Long-term results of the PRADO study

H. Przuntek, D. Welzel, M. Gerlach, E. Blümner, W. Danielczyk, H. -J. Kaiser, P. H. Kraus, H. Letzel, P. Riederer, K. Überla

Journal:

Journal of Neural Transmission

Year:

1996

Language:

english

File:

PDF, 1.10 MB

english, 1996

70

Internal exposure of waste incineration workers to organic and inorganic substances

R. Wrbitzky, T. Göen, S. Letzel, F. Frank, J. Angerer

Journal:

International Archives of Occupational and Environmental Health

Year:

1996

Language:

english

File:

PDF, 827 KB

english, 1996

71

Bromocriptine lessens the incidence of mortality in L-Dopa-treated parkinsonian patients: Prado-study discontinued

H. Przuntek, D. Welzel, E. Blümner, W. Danielczyk, H. Letzel, H. -J. Kaiser, P. H. Kraus, P. Riederer, D. Schwarzmann, H. Wolf, K. Überla

Journal:

European Journal of Clinical Pharmacology

Year:

1992

Language:

english

File:

PDF, 970 KB

english, 1992

72

Diagnostic significance of cold provocation test at 12°C

Susanne Voelter-Mahlknecht, Stephan Letzel, Heinrich Dupuis

Journal:

Environmental Health and Preventive Medicine

Year:

2005

Language:

english

File:

PDF, 371 KB

english, 2005

73

Aluminium dust-induced lung disease in the pyro-powder-producing industry: detection by high-resolution computed tomography

T. Kraus, K. H. Schaller, J. Angerer, S. Letzel

Journal:

International Archives of Occupational and Environmental Health

Year:

2000

Language:

english

File:

PDF, 417 KB

english, 2000

74

Sozialrechtliche Bewertung UV-induzierter Hauttumoren

S. Völter-Mahlknecht, M. Berneburg, D.-M. Rose, H. Drexler, M. Röcken, S. Letzel, W. Wehrmann

Journal:

Year:

2005

Language:

german

File:

PDF, 743 KB

german, 2005

75

Anosmie und Rhinitis durch eine berufliche Lösungsmittelexposition

A. Muttray, B. Haxel, W. Mann, S. Letzel

Journal:

Year:

2006

Language:

german

File:

PDF, 600 KB

german, 2006

76

Systematic development of an enzymatic phosphorylation assay compatible with mass spectrometric detection

A. R. de Boer, T. Letzel, H. Lingeman, H. Irth

Journal:

Analytical and Bioanalytical Chemistry

Year:

2005

Language:

english

File:

PDF, 285 KB

english, 2005

77

Mass spectrometric real-time monitoring of enzymatic glycosidic hydrolysis, enzymatic inhibition and enzyme complexes

Nicole Dennhart, Thomas Letzel

Journal:

Analytical and Bioanalytical Chemistry

Year:

2006

Language:

english

File:

PDF, 1011 KB

english, 2006

78

Real-time mass spectrometry in enzymology

Journal:

Analytical and Bioanalytical Chemistry

Year:

2008

Language:

english

File:

PDF, 197 KB

english, 2008

79

Analysis of large oxygenated and nitrated polycyclic aromatic hydrocarbons formed under simulated diesel engine exhaust conditions (by compound fingerprints with SPE/LC-API-MS)

Christoph Adelhelm, Reinhard Niessner, Ulrich Pöschl, Thomas Letzel

Journal:

Analytical and Bioanalytical Chemistry

Year:

2008

Language:

english

File:

PDF, 270 KB

english, 2008

80

Functional proteomics: application of mass spectrometry to the study of enzymology in complex mixtures

Johanna Graßmann, Romy K. Scheerle, Thomas Letzel

Journal:

Analytical and Bioanalytical Chemistry

Year:

2012

Language:

english

File:

PDF, 810 KB

english, 2012

81

Longitudinal study examining the neurotoxicity of occupational exposure to aluminium-containing welding fumes

M. Buchta, E. Kiesswetter, A. Otto, K. H. Schaller, A. Seeber, W. Hilla, K. Windorfer, J. Stork, A. Kuhlmann, O. Gefeller, S. Letzel

Journal:

International Archives of Occupational and Environmental Health

Year:

2003

Language:

english

File:

PDF, 258 KB

english, 2003

82

First experiences with DIN ISO 14835-1 in the context of vibration-induced white finger disease

S. Voelter-Mahlknecht, F. Krummenauer, D. Koulele, U. Mahlknecht, L. C. Escobar Pinzón, H. Dupuis¹, S. Letzel

Journal:

International Archives of Occupational and Environmental Health

Year:

2006

Language:

english

File:

PDF, 221 KB

english, 2006

83

Skin tumors among employees of a tar refinery: the current data and their implications

S. Voelter-Mahlknecht, R. Scheriau, G. Zwahr, B. Koch, L. C. Escobar Pinzon, H. Drexler, S. Letzel

Journal:

International Archives of Occupational and Environmental Health

Year:

2007

Language:

english

File:

PDF, 293 KB

english, 2007

84

Longitudinal study on potential neurotoxic effects of aluminium: I. Assessment of exposure and neurobehavioural performance of Al welders in the train and truck construction industry over 4

E. Kiesswetter, M. Schäper, M. Buchta, K. H. Schaller, B. Rossbach, H. Scherhag, W. Zschiesche, S. Letzel

Journal:

International Archives of Occupational and Environmental Health

Year:

2007

Language:

english

File:

PDF, 394 KB

english, 2007

85

No acute effects of an exposure to 50

A. Muttray, J. Gosepath, J. Brieger, A. Faldum, A. Pribisz, O. Mayer-Popken, D. Jung, B. Roßbach, W. Mann, S. Letzel

Journal:

International Archives of Occupational and Environmental Health

Year:

2009

Language:

english

File:

PDF, 306 KB

english, 2009

86

Longitudinal study on potential neurotoxic effects of aluminium: II. Assessment of exposure and neurobehavioral performance of Al welders in the automobile industry over 4

Ernst Kiesswetter, M. Schäper, M. Buchta, K. H. Schaller, B. Rossbach, T. Kraus, S. Letzel

Journal:

International Archives of Occupational and Environmental Health

Year:

2009

Language:

english

File:

PDF, 1.04 MB

english, 2009

87

Geschlechtsspezifische Risikofaktoren akuter Rückenschmerzen

E. Ochsmann, H. Rüger, T. Kraus, H. Drexler, S. Letzel, E. Münster

Journal:

Year:

2009

Language:

german

File:

PDF, 488 KB

german, 2009

88

Präventionsansätze für akute Rückenschmerzen

E. Ochsmann, H. Rüger, S. Letzel, T. Kraus, E. Münster

Journal:

Trauma und Berufskrankheit

Year:

2008

Language:

german

File:

PDF, 404 KB

german, 2008

89

Spatial representativeness of single tower measurements and the imbalance problem with eddy-covariance fluxes: results of a large-eddy simulation study

Gerald Steinfeld, Marcus Oliver Letzel, Siegfried Raasch, Manabu Kanda, Atsushi Inagaki

Journal:

Boundary-Layer Meteorology

Year:

2007

Language:

english

File:

PDF, 2.88 MB

english, 2007

90

Intermediates in the Methanol-to-hydrocarbons (MTH) Reaction: A Gas Phase Study of the Unimolecular Reactivity of Multiply Methylated Benzenium Cations

Stian Svelle, Morten Bjørgen, Stein Kolboe, Dietmar Kuck, Matthias Letzel, Unni Olsbye, Osamu Sekiguchi, Einar Uggerud

Journal:

Catalysis Letters

Year:

2006

Language:

english

File:

PDF, 293 KB

english, 2006

91

A self-assembling metallosupramolecular cage based on cavitand–terpyridine subunits

Tobias Schröder, Ralf Brodbeck, Matthias C. Letzel, Andreas Mix, Björn Schnatwinkel, Markus Tonigold, Dirk Volkmer, Jochen Mattay

Journal:

Tetrahedron Letters

Year:

2008

Language:

english

File:

PDF, 524 KB

english, 2008

92

Gas holdup and mass transfer in bubble column reactors operated at elevated pressure

H.M. Letzel, J.C. Schouten, R. Krishna, C.M. van den Bleek

Journal:

Chemical Engineering Science

Year:

1999

Language:

english

File:

PDF, 328 KB

english, 1999

93

The influence of polishing on the marginal integrity of amalgam restorations

H. LETZEL, M. M. A. VRIJHOEF

Journal:

Journal of Oral Rehabilitation

Year:

1984

File:

PDF, 1.73 MB

1984

94

Long-term influences on marginal fracture of amalgam restorations

H. LETZEL, M. M. A. VRIJHOEF

Journal:

Journal of Oral Rehabilitation

Year:

1984

File:

PDF, 1.88 MB

1984

95

A method to determine the loss of substance of dental restorations

M. M. A. VRIJHOEF, H. LETZEL, F. H. J. HENDRIKS

Journal:

Journal of Oral Rehabilitation

Year:

1985

Language:

english

File:

PDF, 4.19 MB

english, 1985

96

Methodological aspects in clinical evaluation of cast restorations with colour slides

P. R. MEZGER, M. A. VAN T'HOF, H. LETZEL, S. ESCHEN, P. J. B. LEEMPOEL, P. A. SNOEK, M. A. VRIJHOEF

Journal:

Journal of Oral Rehabilitation

Year:

1985

Language:

english

File:

PDF, 4.73 MB

english, 1985

97

The influence of the condensation instrument on the clinical behaviour of amalgam restorations

H. LETZEL, M. A. VAN'T HOF, M. M. A. VRIJHOEF

Journal:

Journal of Oral Rehabilitation

Year:

1987

Language:

english

File:

PDF, 5.87 MB

english, 1987

98

Composite versus amalgam restorations : A three-year clinical evaluation

F. H. J. HENDRIKS, H. LETZEL, M. M. A. VRIJHOEF

Journal:

Journal of Oral Rehabilitation

Year:

1986

Language:

english

File:

PDF, 7.14 MB

english, 1986

99

Bulk fracture of amalgam restorations—a 5-year controlled clinical trial

P. L. M. LEMMENS, H. LETZEL, M. C. R. B. PETERS, M. A. T. VAN'T HOF

Journal:

Journal of Oral Rehabilitation

Year:

1988

Language:

english

File:

PDF, 5.31 MB

english, 1988

100

Function of phytochelatin synthase in catabolism of glutathione-conjugates

Ralph Blum, Andreas Beck, Arthur Korte, Anna Stengel, Thomas Letzel, Klaus Lendzian, Erwin Grill

Journal:

The Plant Journal

Year:

2007

Language:

english

File:

PDF, 725 KB

english, 2007