A. Helfenstein: search on Z-Library

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51

Soil solution phosphorus turnover: derivation, interpretation, and insights from a global compilation of isotope exchange kinetic studies

Helfenstein, Julian, Jegminat, Jannes, McLaren, Timothy I., Frossard, Emmanuel

Journal:

Year:

2018

Language:

english

File:

PDF, 1.12 MB

english, 2018

52

End-of-mission calibration of the Cassini Imaging Science Subsystem

Knowles, Benjamin, West, Robert, Helfenstein, Paul, Verbiscer, Anne, Wilson, Daren, Porco, Carolyn

Journal:

Planetary and Space Science

Year:

2020

File:

PDF, 2.79 MB

2020

53

[Advances in Ecological Research] || Conceptualizing pathways to sustainable agricultural intensification

Helfenstein, Julian

Year:

2020

File:

PDF, 789 KB

2020

54

Riemann Surfaces, by Lars V. Ahlfors and Leo Sario. Princeton Mathematics Series 26, Princeton University Press, 1960, xi + 382 pages.

Helfenstein, Heinz G.

Journal:

Canadian Mathematical Bulletin

Year:

1961

File:

PDF, 249 KB

1961

55

Lasers and Optics for the Laser Interferometer Space Antenna (LISA)

Christensen, Nelson, Helfenstein, P.

Journal:

EPJ Web of Conferences

Year:

2020

File:

PDF, 55 KB

2020

56

Direct analysis and synthesis of multiphase switched-current networks using signal-flow graphs

Helfenstein, Markus, Muralt, Arnold, Moschytz, George S.

Journal:

International Journal of Circuit Theory and Applications

Year:

1998

Language:

english

File:

PDF, 580 KB

english, 1998

57

90 dB, 90 MHz, 30 mW CMOS OTA for a high capacitive load

Helfenstein, Markus, Huang, Qiuting, Moschytz, George S.

Journal:

International Journal of Circuit Theory and Applications

Year:

1999

Language:

english

File:

PDF, 213 KB

english, 1999

58

Everyday appropriations of information technology: A study of creative uses of digital cameras

Antti Salovaara, Sacha Helfenstein, Antti Oulasvirta

Journal:

Journal of the American Society for Information Science and Technology

Year:

2011

Language:

english

File:

PDF, 324 KB

english, 2011

59

Rate Constants and the Variation of Random Concentration Curves in a 2-Compartment System

Journal:

Biometrical Journal

Year:

1991

Language:

english

File:

PDF, 314 KB

english, 1991

60

Die Konstitution der Phloroglucin-monomethyläther-aldehyde. VIII. Mitteilung über Oxycarbonylverbindungen

P. Karrer, A. Helfenstein

Journal:

Helvetica Chimica Acta

Year:

1927

Language:

german

File:

PDF, 350 KB

german, 1927

61

Zur Frage der Existenz optisch aktiver Carboniumsalze

P. Karrer, A. Helfenstein

Journal:

Helvetica Chimica Acta

Year:

1928

Language:

german

File:

PDF, 350 KB

german, 1928

62

Pflanzenfarbstoffe IX. Zur Kenntnis des Crocetins und Lycopins

P. Karrer, A. Helfenstein, Rose Widmer

Journal:

Helvetica Chimica Acta

Year:

1928

Language:

german

File:

PDF, 555 KB

german, 1928

63

Neue Darstellung von Phloroglucinaldehyd-4-methyläther sowie Darstellung seines Tetracetyl-glucosids

P. Karrer, N. Lichtenstein, A. Helfenstein

Journal:

Helvetica Chimica Acta

Year:

1929

Language:

german

File:

PDF, 200 KB

german, 1929

64

Pflanzenfarbstoffe XVI. Über Carotin I

P. Karrer, A. Helfenstein

Journal:

Helvetica Chimica Acta

Year:

1929

Language:

german

File:

PDF, 192 KB

german, 1929

65

Über Bixin. (XIII. Mitteilung über Pflanzenfarbstoffe.)

P. Karrer, A. Helfenstein, Rose Widmer, Th. B. van Itallie

Journal:

Helvetica Chimica Acta

Year:

1929

Language:

german

File:

PDF, 995 KB

german, 1929

66

Pflanzenfarbstoffe XVIII. Weiterer Beitrag zur Konstitution der Carotinoide

P. Karrer, A. Helfenstein, H. Wehrli

Journal:

Helvetica Chimica Acta

Year:

1930

Language:

german

File:

PDF, 126 KB

german, 1930

67

Pflanzenfarbstoffe XIX. Über Zeaxanthin und Xanthophyll

P. Karrer, H. Wehrli, A. Helfenstein

Journal:

Helvetica Chimica Acta

Year:

1930

Language:

german

File:

PDF, 396 KB

german, 1930

68

Pflanzenfarbstoffe XX. Über die Safranfarbstoffe VI

P. Karrer, A. Helfenstein

Journal:

Helvetica Chimica Acta

Year:

1930

Language:

german

File:

PDF, 510 KB

german, 1930

69

Pflanzenfarbstoffe XXV. Über die Konstitution des Lycopins und Carotins

P. Karrer, A. Helfenstein, H. Wehrli, A. Wettstein

Journal:

Helvetica Chimica Acta

Year:

1930

Language:

german

File:

PDF, 958 KB

german, 1930

70

Synthese des Squalens

P. Karrer, A. Helfenstein

Journal:

Helvetica Chimica Acta

Year:

1931

Language:

german

File:

PDF, 527 KB

german, 1931

71

Pflanzenfarbstoffe XXIX. Die Symmetrisch Lycopinformel. Perhydro-lycopin

P. Karrer, A. Helfenstein, B. Pieper, A. Wettstein

Journal:

Helvetica Chimica Acta

Year:

1931

Language:

german

File:

PDF, 228 KB

german, 1931

72

Pflanzenfarbstoffe XXX. Beiträge zur Kenntnis des Carotins, der Xanthophylle, des Fucoxanthins und Capsanthins

P. Karrer, A. Helfenstein, H. Wehrli, B. Pieper, R. Morf

Journal:

Helvetica Chimica Acta

Year:

1931

Language:

german

File:

PDF, 1.20 MB

german, 1931

73

Die Natur der Sauerstoffatome im Scillaridin A. (6. Mitteilung über Herzglucoside)

A. Stoll, A. Hofmann, A. Helfenstein

Journal:

Helvetica Chimica Acta

Year:

1934

Language:

german

File:

PDF, 1.60 MB

german, 1934

74

Die Identität der α-Scillansäure mit Allocholansäure. 11. Mitteilung über Herzglucoside

A. Stoll, A. Hofmann, A. Helfenstein

Journal:

Helvetica Chimica Acta

Year:

1935

Language:

german

File:

PDF, 1.06 MB

german, 1935

75

Über die Struktur des Scillirosids. (20. Mitteilung Über Herzglykoside)

A. Stoll, J. Renz, A. Helfenstein

Journal:

Helvetica Chimica Acta

Year:

1943

Language:

german

File:

PDF, 1.55 MB

german, 1943

76

Die Konstitution der Sennoside. 6. Mitteilung über Anthraglykoside

A. Stoll, B. Becker, A. Helfenstein

Journal:

Helvetica Chimica Acta

Year:

1950

Language:

german

File:

PDF, 1.59 MB

german, 1950

77

Programmable cells of monocytic origin (PCMO): A source of peripheral blood stem cells that generate collagen type II-producing chondrocytes

Thomas Pufe, Wolf Petersen, Fred Fändrich, Deike Varoga, Christoph J. Wruck, Rolf Mentlein, Andreas Helfenstein, Daniela Hoseas, Stefanie Dressel, Bernhard Tillmann, Maren Ruhnke

Journal:

Journal of Orthopaedic Research

Year:

2008

Language:

english

File:

PDF, 489 KB

english, 2008

78

Galileo Photometry of Asteroid 951 Gaspra

P. Helfenstein, J. Veverka, P.C. Thomas, D.P. Simonelli, P. Lee, K. Klaasen, T.V. Johnson, H. Breneman, J.W. Head, S. Murchie, F. Fanale, M. Robinson, B. Clark, J. Granahan, H. Garbeil, A.S. McEwen, R

Journal:

Year:

1994

File:

PDF, 1.97 MB

1994

79

The Shape of Gaspra

P.C. Thomas, J. Veverka, D. Simonelli, P. Helfenstein, B. Carcich, M.J.S. Belton, M.E. Davies, C. Chapman

Journal:

Year:

1994

File:

PDF, 1.17 MB

1994

80

Search for Temperature-Related Albedo Changes in Nightside and Posteclipse Images of Io

Damon P. Simonelli, Jennifer Boucher, Paul Helfenstein, Joseph Veverka, Megan O'Shaughnessy

Journal:

Year:

1994

File:

PDF, 1.83 MB

1994

81

Photometric Diversity of Terrains on Triton

J. Hillier, J. Veverka, P. Helfenstein, P. Lee

Journal:

Year:

1994

File:

PDF, 818 KB

1994

82

Analysis of Gaspra Lightcurves Using Galileo Shape and Photometric Models

Damon P. Simonelli, Joseph Veverka, Peter C. Thomas, Paul Helfenstein, Michael J.S. Belton

Journal:

Year:

1995

File:

PDF, 1.08 MB

1995

83

Ida Lightcurves: Consistency with Galileo Shape and Photometric Models

Damon P. Simonelli, Joseph Veverka, Peter C. Thomas, Paul Helfenstein, Brian T. Carcich, Michael J.S. Belton

Journal:

Year:

1996

Language:

english

File:

PDF, 286 KB

english, 1996

84

Galileo Photometry of Asteroid 243 Ida

P. Helfenstein, J. Veverka, P.C. Thomas, D.P. Simonelli, K. Klaasen, T.V. Johnson, F. Fanale, J. Granahan, A.S. McEwen, M. Belton, C. Chapman

Journal:

Year:

1996

Language:

english

File:

PDF, 589 KB

english, 1996

85

Ida and Dactyl: Spectral Reflectance and Color Variations

J. Veverka, P. Helfenstein, P. Lee, P. Thomas, A. McEwen, M. Belton, K. Klaasen, T.V. Johnson, J. Granahan, F. Fanale, P. Geissler, J.W. Head III

Journal:

Year:

1996

Language:

english

File:

PDF, 514 KB

english, 1996

86

Dactyl: Galileo Observations of Ida's Satellite

J. Veverka, P.C. Thomas, P. Helfenstein, P. Lee, A. Harch, S. Calvo, C. Chapman, M.J.S. Belton, K. Klaasen, T.V. Johnson, M. Davies

Journal:

Year:

1996

Language:

english

File:

PDF, 430 KB

english, 1996

87

Ejecta Blocks on 243 Ida and on Other Asteroids

Pascal Lee, Joseph Veverka, Peter C. Thomas, Paul Helfenstein, Michael J.S. Belton, Clark R. Chapman, Ronald Greeley, Robert T. Pappalardo, Robert Sullivan, James W. Head, III

Journal:

Year:

1996

Language:

english

File:

PDF, 550 KB

english, 1996

88

The Surface of Deimos: Contribution of Materials and Processes to Its Unique Appearance

P.C. Thomas, D. Adinolfi, P. Helfenstein, D. Simonelli, J. Veverka

Journal:

Year:

1996

Language:

english

File:

PDF, 546 KB

english, 1996

89

Latitude Variations of the Polar Caps on Ganymede

J. Hillier, P. Helfenstein, J. Veverka

Journal:

Year:

1996

Language:

english

File:

PDF, 380 KB

english, 1996

90

Photometric Properties of Phobos Surface Materials From Viking Images

Damon P. Simonelli, Michael Wisz, Andrew Switala, Daniel Adinolfi, Joseph Veverka, Peter C. Thomas, Paul Helfenstein

Journal:

Year:

1998

Language:

english

File:

PDF, 2.49 MB

english, 1998

91

Grooved Terrain on Ganymede: First Results from Galileo High-Resolution Imaging

Robert T. Pappalardo, James W. Head, Geoffrey C. Collins, Randolph L. Kirk, Gerhard Neukum, Juergen Oberst, Bernd Giese, Ronald Greeley, Clark R. Chapman, Paul Helfenstein, Jeffrey M. Moore, Alfred Mc

Journal:

Year:

1998

Language:

english

File:

PDF, 3.10 MB

english, 1998

92

Galileo Observations of Europa's Opposition Effect

P. Helfenstein, N. Currier, B.E. Clark, J. Veverka, M. Bell, R. Sullivan, J. Klemaszewski, R. Greeley, R.T. Pappalardo, J.W. Head III, T. Jones, K. Klaasen, K. Magee, P. Geissler, R. Greenberg, A. McE

Journal:

Year:

1998

Language:

english

File:

PDF, 1.66 MB

english, 1998

93

Multispectral Terrain Analysis of Europa from Galileo Images

Beth E. Clark, Paul Helfenstein, Joseph Veverka, Maureen Ockert-Bell, R.J. Sullivan, P.E. Geissler, C.B. Phillips, A.S. McEwen, R. Greeley, G. Neukum, T. Denk, K. Klaasen

Journal:

Year:

1998

Language:

english

File:

PDF, 2.90 MB

english, 1998

94

Evolution of Lineaments on Europa: Clues from Galileo Multispectral Imaging Observations

P.E. Geissler, R. Greenberg, G. Hoppa, A. McEwen, R. Tufts, C. Phillips, B. Clark, M. Ockert-Bell, P. Helfenstein, J. Burns, J. Veverka, R. Sullivan, R. Greeley, R.T. Pappalardo, J.W. Head III, M.J.S.

Journal:

Year:

1998

Language:

english

File:

PDF, 3.14 MB

english, 1998

95

Phoebe: Albedo Map and Photometric Properties

Damon P. Simonelli, Jennifer Kay, Daniel Adinolfi, Joseph Veverka, Peter C. Thomas, Paul Helfenstein

Journal:

Year:

1999

Language:

english

File:

PDF, 264 KB

english, 1999

96

Inflight Calibration of the NEAR Multispectral Imager

Scott Murchie, Mark Robinson, S.Edward Hawkins III, Ann Harch, Paul Helfenstein, Peter Thomas, Keith Peacock, William Owen, Gene Heyler, Patricia Murphy, E.H. Darlington, Allen Keeney, Robert Gold, Be

Journal:

Year:

1999

Language:

english

File:

PDF, 1.83 MB

english, 1999

97

NEAR Photometry of Asteroid 253 Mathilde

Beth E. Clark, J. Veverka, P. Helfenstein, P.C. Thomas, J.F. Bell III, A. Harch, M.S. Robinson, S.L. Murchie, L.A. McFadden, C.R. Chapman

Journal:

Year:

1999

Language:

english

File:

PDF, 230 KB

english, 1999

98

The Distribution of Bright and Dark Material on Ganymede in Relationship to Surface Elevation and Slopes

Jürgen Oberst, Björn Schreiner, Bernd Giese, Gerhard Neukum, James W. Head, Robert T. Pappalardo, Paul Helfenstein

Journal:

Year:

1999

Language:

english

File:

PDF, 16.54 MB

english, 1999

99

Submillimeter-Scale Topography of the Lunar Regolith

Paul Helfenstein, Michael K. Shepard

Journal:

Year:

1999

Language:

english

File:

PDF, 2.38 MB

english, 1999

100

NEAR Lightcurves of Asteroid 433 Eros

Beth E. Clark, P.C. Thomas, J. Veverka, P. Helfenstein, M.S. Robinson, S.L. Murchie

Journal:

Year:

2000

Language:

english

File:

PDF, 116 KB

english, 2000