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1

Phase I and II metabolites of speciogynine, a diastereomer of the main Kratom alkaloid mitragynine, identified in rat and human urine by liquid chromatography coupled to low- and high-resolution linear ion trap mass spectrometry

Anika A. Philipp, Dirk K. Wissenbach, Armin A. Weber, Josef Zapp, Hans H. Maurer

Journal:

Journal of Mass Spectrometry

Année:

2010

Langue:

english

Fichier:

PDF, 1.13 MB

english, 2010

2

Fast and simple procedure for liquid–liquid extraction of 136 analytes from different drug classes for development of a liquid chromatographic-tandem mass spectrometric quantification method in human blood plasma

Daniela Remane, Markus R. Meyer, Frank T. Peters, Dirk K. Wissenbach, Hans H. Maurer

Journal:

Analytical and Bioanalytical Chemistry

Année:

2010

Langue:

english

Fichier:

PDF, 184 KB

english, 2010

3

Studies on the metabolism of mitragynine, the main alkaloid of the herbal drug Kratom, in rat and human urine using liquid chromatography-linear ion trap mass spectrometry

Anika A. Philipp, Dirk K. Wissenbach, Siegfried W. Zoerntlein, Oliver N. Klein, Jidapha Kanogsunthornrat, Hans H. Maurer

Journal:

Journal of Mass Spectrometry

Année:

2009

Langue:

english

Fichier:

PDF, 316 KB

english, 2009

4

Ion suppression and enhancement effects of co-eluting analytes in multi-analyte approaches: systematic investigation using ultra-high-performance liquid chromatography/mass spectrometry with atmospheric-pressure chemical ionization or electrospray ionization

Daniela Remane, Markus R. Meyer, Dirk K. Wissenbach, Hans H. Maurer

Journal:

Rapid Communications in Mass Spectrometry

Année:

2010

Langue:

english

Fichier:

PDF, 94 KB

english, 2010

5

Use of liquid chromatography coupled to low- and high-resolution linear ion trap mass spectrometry for studying the metabolism of paynantheine, an alkaloid of the herbal drugKratomin rat and human urine

Anika A. Philipp, Dirk K. Wissenbach, Armin. A. Weber, Josef Zapp, Siegfried W. Zoerntlein, Jidapha Kanogsunthornrat, Hans H. Maurer

Journal:

Analytical and Bioanalytical Chemistry

Année:

2010

Langue:

english

Fichier:

PDF, 1000 KB

english, 2010

6

Full validation and application of an ultra high performance liquid chromatographic-tandem mass spectrometric procedure for target screening and quantification of 34 antidepressants in human blood plasma as part of a comprehensive multi-analyte approach

Daniela Remane, Markus R. Meyer, Dirk K. Wissenbach, Hans H. Maurer

Journal:

Analytical and Bioanalytical Chemistry

Année:

2011

Langue:

english

Fichier:

PDF, 358 KB

english, 2011

7

Drugs of abuse screening in urine as part of a metabolite-based LC-MSnscreening concept

Dirk K. Wissenbach, Markus R. Meyer, Daniela Remane, Anika A. Philipp, Armin A. Weber, Hans H. Maurer

Journal:

Analytical and Bioanalytical Chemistry

Année:

2011

Langue:

english

Fichier:

PDF, 183 KB

english, 2011

8

Ultra high performance liquid chromatographic-tandem mass spectrometric multi-analyte procedure for target screening and quantification in human blood plasma: validation and application for 31 neuroleptics, 28 benzodiazepines, and Z-drugs

Daniela Remane, Markus R. Meyer, Dirk K. Wissenbach, Hans H. Maurer

Journal:

Analytical and Bioanalytical Chemistry

Année:

2011

Langue:

english

Fichier:

PDF, 249 KB

english, 2011

9

Qualitative studies on the metabolism and the toxicological detection of the fentanyl-derived designer drugs 3-methylfentanyl and isofentanyl in rats using liquid chromatography–linear ion trap–mass spectrometry (LC-MSn)

Markus R. Meyer, Julia Dinger, Andrea E. Schwaninger, Dirk K. Wissenbach, Josef Zapp, Giselher Fritschi, Hans H. Maurer

Journal:

Analytical and Bioanalytical Chemistry

Année:

2012

Langue:

english

Fichier:

PDF, 276 KB

english, 2012

10

Solubility of CO2 in the ionic liquid [hmim][Tf2N]

Jacek Kumełan, Álvaro Pérez-Salado Kamps, Dirk Tuma, Gerd Maurer

Journal:

The Journal of Chemical Thermodynamics

Année:

2006

Langue:

english

Fichier:

PDF, 167 KB

english, 2006

11

Experimental Investigation of the Solubility of Ammonia in Methanol

Schäfer, Dirk, Xia, Jianzhong, Vogt, Mathias, Pérez-Salado Kamps, Álvaro, Maurer, Gerd

Journal:

Journal of Chemical & Engineering Data

Année:

2007

Langue:

english

Fichier:

PDF, 82 KB

english, 2007

12

ICT applications in the research into environmental sustainability: a user preferences approach

Aline Chiabai, Dirk Rübbelke, Lisa Maurer

Journal:

Environment, Development and Sustainability

Année:

2013

Langue:

english

Fichier:

PDF, 624 KB

english, 2013

13

Solubility of Carbon Dioxide in Activated Potash Solutions in the Low and High Gas Loading Regions

Imle, Michael, Kumelan, Jacek, Speyer, Dirk, McCann, Nichola, Maurer, Gerd, Hasse, Hans

Journal:

Industrial & Engineering Chemistry Research

Année:

2013

Langue:

english

Fichier:

PDF, 780 KB

english, 2013

14

SPIE Proceedings [SPIE 29th European Mask and Lithography Conference - Dresden, Germany (Tuesday 25 June 2013)] 29th European Mask and Lithography Conference - Status of the AIMS EUV development project

Garetto, Anthony, Peters, Jan Hendrik, Hellweg, Dirk, Weiss, Markus, Behringer, Uwe F. W., Maurer, Wilhelm

Année:

2013

Langue:

english

Fichier:

PDF, 2.37 MB

english, 2013

15

Novel deletion in 11p15.5 imprinting center region 1 in a patient with Beckwith-Wiedemann syndrome provides insight into distal enhancer regulation and tumorigenesis

Bachmann, Nadine, Crazzolara, Roman, Bohne, Florian, Kotzot, Dieter, Maurer, Kathrin, Enklaar, Thorsten, Prawitt, Dirk, Bergmann, Carsten

Journal:

Pediatric Blood & Cancer

Année:

2016

Langue:

english

Fichier:

PDF, 924 KB

english, 2016

16

Placement of central venous port catheters and peripherally inserted central catheters in the routine clinical setting of a radiology department: analysis of costs and intervention duration learning curve

Rotzinger, Roman, Gebauer, Bernhard, Schnapauff, Dirk, Streitparth, Florian, Wieners, Gero, Grieser, Christian, Freyhardt, Patrick, Hamm, Bernd, Maurer, Martin H

Journal:

Acta Radiologica

Année:

2017

Langue:

english

Fichier:

PDF, 308 KB

english, 2017

17

[IEEE 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications - London, United Kingdom (2020.8.31-2020.9.3)] 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications - Comparison of 5G Enabled Control Loops for Production

Kehl, Pierre, Lange, Dr. Dirk, Konstantin Maurer, Felix, Nemeth, Gabor, Overbeck, Daniel, Jung, Sven, Konig, Niels, Schmitt, Prof. Robert H.

Année:

2020

Fichier:

PDF, 828 KB

2020

18

Die hochenantioselektive katalytische Doppelbindungsisomerisierung von 4,7-Dihydro-1,3-dioxepinen mit Me-DuPHOS-modifizierten Dihalogenonickel-Komplexen und Bestimmung der Absolutkonfiguration der Isomerisierungsprodukte

Herbert Frauenrath, Dirk Brethauer, Stefan Reim, Martin Maurer, Gerhard Raabe

Journal:

Angewandte Chemie

Année:

2001

Fichier:

PDF, 168 KB

2001

19

Highly Enantioselective Isomerization of 4,7-Dihydro-1,3-dioxepins Catalyzed by Me-DuPHOS-Modified Dihalogenonickel Complexes and Determination of the Absolute Configuration of the Isomerization Products

Herbert Frauenrath, Dirk Brethauer, Stefan Reim, Martin Maurer, Gerhard Raabe

Journal:

Angewandte Chemie International Edition

Année:

2001

Langue:

english

Fichier:

PDF, 166 KB

english, 2001

20

ChemInform Abstract: Highly Enantioselective Isomerization of 4,7-Dihydro-1,3-dioxepins Catalyzed by Me-DuPHOS-Modified Dihalogenonickel Complexes and Determination of the Absolute Configuration of the Isomerization Products.

Herbert Frauenrath, Dirk Brethauer, Stefan Reim, Martin Maurer, Gerhard Raabe

Journal:

Année:

2001

Fichier:

PDF, 35 KB

2001

21

ChemInform Abstract: Gas Solubility (and Related High-Pressure Phenomena) in Systems with Ionic Liquids

Gerd Maurer, Dirk Tuma

Journal:

Année:

2010

Fichier:

PDF, 15 KB

2010

22

Self-Assembling Depsipeptide Dendrimers and Dendritic Fullerenes with New cis- and trans-Symmetric Hamilton Receptor Functionalized Zn–Porphyrins: Synthesis, Photophysical Properties and Cooperativity Phenomena

Katja Maurer, Bruno Grimm, Florian Wessendorf, Kristine Hartnagel, Dirk M. Guldi, Andreas Hirsch

Journal:

European Journal of Organic Chemistry

Année:

2010

Langue:

english

Fichier:

PDF, 1.78 MB

english, 2010

23

Towards a universal LC–MS screening procedure – can an LIT LC–MSn screening approach and reference library be used on a quadrupole-LIT hybrid instrument?

Dirk K. Wissenbach, Markus R. Meyer, Armin A. Weber, Daniela Remane, Andreas H. Ewald, Frank T. Peters, Hans H. Maurer

Journal:

Journal of Mass Spectrometry

Année:

2012

Langue:

english

Fichier:

PDF, 143 KB

english, 2012

24

Solubility of the single gases H2 and CO in the ionic liquid [bmim][CH3SO4]

Jacek Kumełan, Álvaro Pérez-Salado Kamps, Dirk Tuma, Gerd Maurer

Journal:

Fluid Phase Equilibria

Année:

2007

Langue:

english

Fichier:

PDF, 327 KB

english, 2007

25

Partial molar volumes of selected gases in some ionic liquids

Jacek Kumełan, Dirk Tuma, Gerd Maurer

Journal:

Fluid Phase Equilibria

Année:

2009

Langue:

english

Fichier:

PDF, 637 KB

english, 2009

26

High-pressure phase behavior of ternary systems (carbon dioxide + alkanol + hydrophobic ionic liquid)

Krasimir Chobanov, Dirk Tuma, Gerd Maurer

Journal:

Fluid Phase Equilibria

Année:

2010

Langue:

english

Fichier:

PDF, 1.12 MB

english, 2010

27

Metabolism studies of the Kratom alkaloids mitraciliatine and isopaynantheine, diastereomers of the main alkaloids mitragynine and paynantheine, in rat and human urine using liquid chromatography–linear ion trap-mass spectrometry

Anika A. Philipp, Dirk K. Wissenbach, Armin A. Weber, Josef Zapp, Hans H. Maurer

Journal:

Journal of Chromatography B

Année:

2011

Langue:

english

Fichier:

PDF, 321 KB

english, 2011

28

Solubility of oxygen in the ionic liquid [bmim][PF6]: Experimental and molecular simulation results

Jacek Kumełan, Álvaro Pérez-Salado Kamps, Ilina Urukova, Dirk Tuma, Gerd Maurer

Journal:

The Journal of Chemical Thermodynamics

Année:

2005

Langue:

english

Fichier:

PDF, 154 KB

english, 2005

29

High-pressure multiphase behavior of the ternary systems (ethene + water + 1-propanol) and (ethene + water + 2-propanol): Part I: Experimental investigation

Jörg Freitag, M.Teresa Sanz Dı́ez, Dirk Tuma, Tatiana V. Ulanova, Gerd Maurer

Journal:

The Journal of Supercritical Fluids

Année:

2004

Langue:

english

Fichier:

PDF, 458 KB

english, 2004

30

High-pressure multiphase behavior of the ternary systems (ethene + water + 1-propanol) and (ethene + water + 2-propanol): Part II: Modeling

Jörg Freitag, Dirk Tuma, Tatiana V. Ulanova, Gerd Maurer

Journal:

The Journal of Supercritical Fluids

Année:

2006

Langue:

english

Fichier:

PDF, 962 KB

english, 2006

31

Experimental data and correlation results for the partitioning of 2,5-hexanediol and 2,5-hexanedione to high-pressure liquid phases of the (ethene + water + 2-propanol) system

Jörg Freitag, Dirk Tuma, Gerd Maurer

Journal:

The Journal of Supercritical Fluids

Année:

2007

Langue:

english

Fichier:

PDF, 350 KB

english, 2007

32

Partitioning of the two pairs of structurally similar biomolecules N-acetyl-d-glucosamine and N-acetyl-d-mannosamine as well d-phenylalanine and l-phenylalanine to high-pressure liquid phases of the (ethene + water + 2-propanol) system

Jörg Freitag, Dirk Tuma, Tatiana V. Ulanova, Gerd Maurer

Journal:

The Journal of Supercritical Fluids

Année:

2007

Langue:

english

Fichier:

PDF, 353 KB

english, 2007

33

The extracellular proteome of Bacillus licheniformis grown in different media and under different nutrient starvation conditions

Birgit Voigt, Thomas Schweder, Mark J. J. B. Sibbald, Dirk Albrecht, Armin Ehrenreich, Jörg Bernhardt, Jörg Feesche, Karl-Heinz Maurer, Gerhard Gottschalk, Jan Maarten van Dijl, Michael Hecker

Journal:

Année:

2006

Langue:

english

Fichier:

PDF, 1.22 MB

english, 2006

34

The glucose and nitrogen starvation response of Bacillus licheniformis

Birgit Voigt, Le Thi Hoi, Britta Jürgen, Dirk Albrecht, Armin Ehrenreich, Birgit Veith, Stefan Evers, Karl-Heinz Maurer, Michael Hecker, Thomas Schweder

Journal:

Année:

2007

Langue:

english

Fichier:

PDF, 456 KB

english, 2007

35

The extracellular proteome of Bacillus licheniformis grown in different media and under different nutrient starvation conditions

Birgit Voigt, Thomas Schweder, Mark J. J. B. Sibbald, Dirk Albrecht, Armin Ehrenreich, Jörg Bernhardt, Jörg Feesche, Karl-Heinz Maurer, Gerhard Gottschalk, Jan Maarten van Dijl, Michael Hecker

Journal:

Année:

2006

Langue:

english

Fichier:

PDF, 234 KB

english, 2006

36

The peroxide stress response of Bacillus licheniformis

Rebecca Schroeter, Birgit Voigt, Britta Jürgen, Karen Methling, Dierk-Christoph Pöther, Heinrich Schäfer, Dirk Albrecht, Jörg Mostertz, Ulrike Mäder, Stefan Evers, Karl-Heinz Maurer, Michael Lalk, Tho

Journal:

Année:

2011

Langue:

english

Fichier:

PDF, 708 KB

english, 2011

37

Systematic investigation of ion suppression and enhancement effects of fourteen stable-isotope-labeled internal standards by their native analogues using atmospheric-pressure chemical ionization and electrospray ionization and the relevance for multi-analyte liquid chromatographic/mass spectrometric procedures

Daniela Remane, Dirk K. Wissenbach, Markus R. Meyer, Hans H. Maurer

Journal:

Rapid Communications in Mass Spectrometry

Année:

2010

Langue:

english

Fichier:

PDF, 140 KB

english, 2010

38

Evaluation of Calculation Algorithms Implemented in Different Commercial Planning Systems on an Anthropomorphic Breast Phantom Using Film Dosimetry

Martin Polednik, Yasser Abo Madyan, Frank Schneider, Dirk Wolff, Burkhardt Bannach, Ulrike Lambrecht, André Wallin, Marian Cwiekala, Klaus Maurer, Florian Reif, Frank Lohr, Frederik Wenz, Breast Cance

Journal:

Strahlentherapie und Onkologie

Année:

2007

Fichier:

PDF, 405 KB

2007

39

Development of the first metabolite-based LC-MSnurine drug screening procedure-exemplified for antidepressants

Dirk K. Wissenbach, Markus R. Meyer, Daniela Remane, Armin A. Weber, Hans H. Maurer

Journal:

Analytical and Bioanalytical Chemistry

Année:

2011

Langue:

english

Fichier:

PDF, 220 KB

english, 2011

40

Monitoring ofkratomor Krypton intake in urine using GC-MS in clinical and forensic toxicology

Anika A. Philipp, Markus R. Meyer, Dirk K. Wissenbach, Armin A. Weber, Siegfried W. Zoerntlein, Peter G. M. Zweipfenning, Hans H. Maurer

Journal:

Analytical and Bioanalytical Chemistry

Année:

2011

Langue:

english

Fichier:

PDF, 281 KB

english, 2011

41

Metabolism studies of theKratomalkaloid speciociliatine, a diastereomer of the main alkaloid mitragynine, in rat and human urine using liquid chromatography-linear ion trap mass spectrometry

Anika A. Philipp, Dirk K. Wissenbach, Armin A. Weber, Josef Zapp, Hans H. Maurer

Journal:

Analytical and Bioanalytical Chemistry

Année:

2011

Langue:

english

Fichier:

PDF, 170 KB

english, 2011

42

Literaturbesprechungen

Andrea Maurer, Peter Imbusch, Dirk Baier, Klaus Boehnke, Manuela Pötschke, Henning Best, Annette von Alemann, Birgit Riegraf, Corinna Onnen-Isemann, Juliane Achatz, Peter H. Hartmann, Nicole Burzan, M

Journal:

KZfSS Kölner Zeitschrift für Soziologie und Sozialpsychologie

Année:

2006

Langue:

german

Fichier:

PDF, 287 KB

german, 2006

43

Solubility of CO in the ionic liquid [bmim][PF6]

Jacek Kumełan, Álvaro Pérez-Salado Kamps, Dirk Tuma, Gerd Maurer

Journal:

Fluid Phase Equilibria

Année:

2005

Langue:

english

Fichier:

PDF, 85 KB

english, 2005

44

Solubility of ammonia in liquid mixtures of (water + methanol)

Dirk Schäfer, Mathias Vogt, Álvaro Pérez-Salado Kamps, Gerd Maurer

Journal:

Fluid Phase Equilibria

Année:

2007

Langue:

english

Fichier:

PDF, 418 KB

english, 2007

45

Modulation of NF-κB activation in Theileria annulata-infected cloned cell lines is associated with detection of parasite-dependent IKK signalosomes and disruption of the actin cytoskeleton

Jacqueline Schmuckli-Maurer, Jane Kinnaird, Sreerekha Pillai, Pascal Hermann, Sue McKellar, William Weir, Dirk Dobbelaere, Brian Shiels

Journal:

Cellular Microbiology

Année:

2010

Langue:

english

Fichier:

PDF, 976 KB

english, 2010

46

Prodromal unfolding: the validation of the Schizotypic Syndrome Questionnaire model in a sample of first-episode schizophrenic patients

Dirk Van Kampen, Kurt Maurer, Wolfram An Der Heiden, Heinz Häfner

Journal:

Early Intervention in Psychiatry

Année:

2009

Langue:

english

Fichier:

PDF, 230 KB

english, 2009

47

Computational Sensitivity Analysis for State Constrained Optimal Control Problems

Dirk Augustin, Helmut Maurer

Journal:

Annals of Operations Research

Année:

2001

Langue:

english

Fichier:

PDF, 225 KB

english, 2001

48

Neue Untersuchungen zum Phänomen Aussalzen mit einem nahekritischen Gas

Dr. Dirk Tuma, Dr.-Ing. Tatiana Ulanova, Dr.-Ing. Krasimir Chobanov, Prof. Dr.-Ing. Gerd Maurer

Journal:

Chemie Ingenieur Technik

Année:

2012

Langue:

german

Fichier:

PDF, 291 KB

german, 2012

49

Simultaneous solubility of carbon dioxide and hydrogen in the ionic liquid [hmim][Tf2N]: Experimental results and correlation

Jacek Kumełan, Dirk Tuma, Gerd Maurer

Journal:

Fluid Phase Equilibria

Année:

2011

Langue:

english

Fichier:

PDF, 276 KB

english, 2011

50

Stochastic induction of Theileria annulata merogony in vitro by chloramphenicol

Jacqueline Schmuckli-Maurer, Brian Shiels, Dirk A. Dobbelaere

Journal:

International Journal for Parasitology

Année:

2008

Langue:

english

Fichier:

PDF, 366 KB

english, 2008