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51

Separation of spiramycin components using high-speed counter-current chromatography

Hisao Oka, Ken-ichi Harada, Masanao Suzuki, Yoichiro Ito

Journal:

Journal of Chromatography A

Year:

2000

Language:

english

File:

PDF, 199 KB

english, 2000

52

Improvement of chemical analysis of antibiotics : XV. Isocratic high-performance liquid chromatographic methods for the analysis and preparative separation of the components of bacitracin

Hisao Oka, Yoshitomo Ikai, Norihisa Kawamura, Masuo Yamada, Ken-Ichi Harada, Yumiko Yamazaki, Makoto Suzuki

Journal:

Journal of Chromatography A

Year:

1989

Language:

english

File:

PDF, 546 KB

english, 1989

53

Improvement of chemical analysis of antibiotics : XIII. Systematic simultaneous analysis of residual tetracyclines in animal tissues using thin-layer and high-performance liquid chromatography

Yoshitomo Ikai, Hisao Oka, Norihisa Kawamura, Masuo Yamada, Ken-Ichi Harada, Makoto Suzuki

Journal:

Journal of Chromatography A

Year:

1987

Language:

english

File:

PDF, 678 KB

english, 1987

54

Simple method for the analysis of food dyes on reversed-phase thin-layer plates

Hisao Oka, Yoshitomo Ikai, Norihisa Kawamura, Masuo Yamada, Hiromasa Inoue, Tsutomu Ohno, Kensuke Inagaki, Arifumi Kuno, Nagisa Yamamoto

Journal:

Journal of Chromatography A

Year:

1987

Language:

english

File:

PDF, 953 KB

english, 1987

55

Improvement of chemical analysis of antibiotics : VIII. Application of prepacked C18 cartridge for the analysis of tetracycline residues in animal liver

Hisao Oka, Hiroshi Matsumoto, Keiichi Uno, Ken-Ichi Harada, Satsuki Kadowaki, Makoto Suzuki

Journal:

Journal of Chromatography A

Year:

1985

Language:

english

File:

PDF, 633 KB

english, 1985

56

Application of ion-exchange cartridge clean-up in food analysis: IV. Confirmatory assay of benzylpenicillin, phenoxymethylpenicillin, oxacillin, cloxacillin, nafcillin and dicloxacillin in bovine tissues by liquid chromatography–electrospray ionization tandem mass spectrometry

Yuko Ito, Yoshitomo Ikai, Hisao Oka, Hiroshi Matsumoto, Yutaka Miyazaki, Kazue Takeba, Hisamitsu Nagase

Journal:

Journal of Chromatography A

Year:

2001

Language:

english

File:

PDF, 467 KB

english, 2001

57

Separation of WAP-8294A components, a novel anti-methicillin-resistant Staphylococcus aureus antibiotic, using high-speed counter-current chromatography

Ken-ichi Harada, Masanao Suzuki, Azusa Kato, Kiyonaga Fujii, Hisao Oka, Yoichiro Ito

Journal:

Journal of Chromatography A

Year:

2001

Language:

english

File:

PDF, 138 KB

english, 2001

58

Purification of Food Color Red No. 106 (acid red) using pH-zone-refining counter-current chromatography

Hisao Oka, Masanao Suzuki, Ken-Ichi Harada, Masato Iwaya, Kiyonaga Fujii, Tomomi Goto, Yuko Ito, Hiroshi Matsumoto, Yoichiro Ito

Journal:

Journal of Chromatography A

Year:

2002

Language:

english

File:

PDF, 126 KB

english, 2002

59

Improvement of chemical analysis of antibiotics : XII. Simultaneous analysis of seven tetracyclines in honey

Hisao Oka, Yoshitomo Ikai, Norihisa Kawamura, Keiichi Uno, Masuo Yamada, Ken-Ichi Harada, Makoto Suzuki

Journal:

Journal of Chromatography A

Year:

1987

Language:

english

File:

PDF, 632 KB

english, 1987

60

Horizontal flow-through coil planet centrifuge equipped with a set of multilayer coils around the column holder: Counter-current chromatography of proteins with a polymer-phase system

Yoichiro Ito, Hisao Oka

Journal:

Journal of Chromatography A

Year:

1988

Language:

english

File:

PDF, 216 KB

english, 1988

61

Multilayer coil planet centrifuge for analytical highspeed counter-current chromatography

Hisao Oka, Fumie Oka, Yoichiro Ito

Journal:

Journal of Chromatography A

Year:

1989

Language:

english

File:

PDF, 824 KB

english, 1989

62

Improved high-speed counter-current chromatography with three multilayer coils connected in series : II. Separation of various biological samples with a semi-preparative column

Yoichiro Ito, Hisao Oka, Wei Lee Yue

Journal:

Journal of Chromatography A

Year:

1990

Language:

english

File:

PDF, 657 KB

english, 1990

63

Improved cross-axis synchronous flow-through coil planet centrifuge for performing counter-current chromatography : I. Design of the apparatus and analysis of accelaration

Yoichiro Ito, Hisao Oka, Jimmie L. Slemp

Journal:

Journal of Chromatography A

Year:

1989

Language:

english

File:

PDF, 784 KB

english, 1989

64

Improved cross-axis synchronous flow-through coil planet centrifuge for performing counter-current chromatography : II. Studies on retention of stationary phase in short coils and preparative separations in multilayer coils

Molina Bhatnagar, Hisao Oka, Yoichiro Ito

Journal:

Journal of Chromatography A

Year:

1989

Language:

english

File:

PDF, 977 KB

english, 1989

65

Improvement of chemical analysis of antibiotics : VI. Detection reagents for tetracyclines in thin-layer chromatography

Hisao Oka, Keiichi Uno, Ken-Ichi Harada, Mika Hayashi, Makoto Suzuki

Journal:

Journal of Chromatography A

Year:

1984

Language:

english

File:

PDF, 596 KB

english, 1984

66

Improved high-speed counter-current chromatograph with three multilayer coils connected in series : I. Design of the apparatus and performance of semipreparative columns in 2,4-dinitrophenyl amino acid separation

Yoichiro Ito, Hisao Oka, Jimmie L. Slemp

Journal:

Journal of Chromatography A

Year:

1989

Language:

english

File:

PDF, 625 KB

english, 1989

67

Isolation of bacitracins A and F by high-speed counter-current chromatography

Ken-Ichi Harada, Yoshitomo Ikai, Yumiko Yamazaki, Hisao Oka, Makoto Suzuki, Hiroyuki Nakazawa, Yoichiro Ito

Journal:

Journal of Chromatography A

Year:

1991

Language:

english

File:

PDF, 572 KB

english, 1991

68

Foam counter-current chromatography of bacitracin : II. Continuous removal and concentration of hydrophobic components with nitrogen gas and distilled water free of surfactants or other additives

Hisao Oka, Ken-Ichi Harada, Makoto Suzuki, Hiroyuki Nakazawa, Yoichiro Ito

Journal:

Journal of Chromatography A

Year:

1991

Language:

english

File:

PDF, 349 KB

english, 1991

69

Purification of food color red no. 106 (acid red) using high-speed counter-current chromatography

Hisao Oka, Yoshitomo Ikai, Norihisa Kawamura, Junko Hayakawa, Masuo Yamada, Ken-Ichi Harada, Hideaki Murata, Makoto Suzuki, Hiroyuki Nakazawa, Sumiko Suzuki, Toshiharu Sakita, Masahiko Fujita, Yumie M

Journal:

Journal of Chromatography A

Year:

1991

Language:

english

File:

PDF, 487 KB

english, 1991

70

Improvement of chemical analysis of antibiotics: V. A simple method for the analysis of tetracyclines using reversed-phase high-performance liquid chromatography

Hisao Oka, Keiichi Uno, Ken-Ichi Harada, Keiko Yasaka, Makoto Suzuki

Journal:

Journal of Chromatography A

Year:

1984

Language:

english

File:

PDF, 563 KB

english, 1984

71

Foam counter-current chromatography of bacitracin : I. Batch separation with nitrogen and water free of additives

Hisao Oka, Ken-Ichi Harada, Makoto Suzuki, Hiroyuki Nakazawa, Yoichiro Ito

Journal:

Journal of Chromatography A

Year:

1989

Language:

english

File:

PDF, 521 KB

english, 1989

72

Improvement of chemical analysis of antibiotics : XI. Simultaneous fluorodensitometric determination of polyether antibiotics

Hirohiko Asukabe, Hiromi Yoneyama, Yuji Mori, Ken-Ichi Harada, Makoto Suzuki, Hisao Oka

Journal:

Journal of Chromatography A

Year:

1987

Language:

english

File:

PDF, 756 KB

english, 1987

73

Improvement of chemical analysis of antibiotics : X. Determination of eight tetracyclines using thin-layer and high-performance liquid chromatography

Hisao Oka, Yoshimoto Ikai, Norihisa Kawamura, Keiichi Uno, Masuo Yamada, Ken-Ichi Harada, Machiko Uchiyama, Hirohiko Asukabe, Makoto Suzuki

Journal:

Journal of Chromatography A

Year:

1987

Language:

english

File:

PDF, 820 KB

english, 1987

74

Improvement of chemical analysis of antibiotics : IX. A simple method for residual tetracyclines analysisin honey using a tandem cartridge clean-up system

Hisao Oka, Yoshitomo Ikai, Norihisa Kawamura, Keiichi Uno, Masuo Yamada, Ken-Ichi Harada, Machiko Uchiyama, Hirohiko Asukabe, Yuji Mori, Makoto Suzuki

Journal:

Journal of Chromatography A

Year:

1987

Language:

english

File:

PDF, 570 KB

english, 1987

75

Improvement of chemical analysis of antibiotics : XVII. Application of an amino cartridge to the determination of residual sulphonamide antibacterials in meat, fish and egg

Yoshitomo Ikai, Hisao Oka, Norihisa Kawamura, Junko Hayakawa, Masuo Yamada, Ken-ichi Harada, Makoto Suzuki, Hiroyuki Nakazawa

Journal:

Journal of Chromatography A

Year:

1991

Language:

english

File:

PDF, 569 KB

english, 1991

76

Improvement of chemical analysis of antibiotics : VII. Comparison of analytical methods for determination of impurities in tetracycline pharmaceutical preparations

Hisao Oka, Makoto Suzuki

Journal:

Journal of Chromatography A

Year:

1984

Language:

english

File:

PDF, 513 KB

english, 1984

77

Purification of quinoline yellow components using high-speed counter-current chromatography by stepwise increasing the flow-rate of the mobile phase

Hisao Oka, Ken-Ichi Harada, Masanao Suzuki, Kiyonaga Fujii, Masato Iwaya, Yuko Ito, Tomomi Goto, Hiroshi Matsumoto, Yoichiro Ito

Journal:

Journal of Chromatography A

Year:

2003

Language:

english

File:

PDF, 404 KB

english, 2003

78

Separation of antibiotics by counter-current chromatography

Hisao Oka, Ken-ichi Harada, Yuko Ito, Yoichiro Ito

Journal:

Journal of Chromatography A

Year:

1998

Language:

english

File:

PDF, 453 KB

english, 1998

79

Mass spectrometric analysis of tetracycline antibiotics in foods

Hisao Oka, Yuko Ito, Yoshitomo Ikai, Tadaaki Kagami, Ken-ichi Harada

Journal:

Journal of Chromatography A

Year:

1998

Language:

english

File:

PDF, 282 KB

english, 1998

80

Separation of lac dye components by high-speed counter-current chromatography

Hisao Oka, Yuko Ito, Sadaji Yamada, Tadaaki Kagami, Junko Hayakawa, Ken-ichi Harada, Eiichiro Atsumi, Masanao Suzuki, Makoto Suzuki, Hiroko Odani, Setsuko Akahori, Kenji Maeda, Hiroyuki Nakazawa, Yoic

Journal:

Journal of Chromatography A

Year:

1998

Language:

english

File:

PDF, 194 KB

english, 1998

81

Application of ion-exchange cartridge clean-up in food analysis: II. Determination of benzylpenicillin, phenoxymethylpenicillin, oxacillin, cloxacillin, nafcillin and dicloxacillin in meat using liquid chromatography with ultraviolet detection

Yuko Ito, Yoshitomo Ikai, Hisao Oka, Tadaaki Kagami, Kazue Takeba

Journal:

Journal of Chromatography A

Year:

1999

Language:

english

File:

PDF, 124 KB

english, 1999

82

Further application of advanced Marfey's method for determination of absolute configuration of primary amino compound

Kiyonaga Fujii, Tomoe Shimoya, Yoshitomo Ikai, Hisao Oka, Ken-ichi Harada

Journal:

Tetrahedron Letters

Year:

1998

Language:

english

File:

PDF, 236 KB

english, 1998

83

Improvement of chemical analysis of antibiotics: XXIII. Identification of residual tetracyclines in bovine tissues by electrospray high-performance liquid chromatography–tandem mass spectrometry

Hisao Oka, Yoshitomo Ikai, Yuko Ito, Junko Hayakawa, Ken-ichi Harada, Makoto Suzuki, Hiroko Odani, Kenji Maeda

Journal:

Journal of Chromatography B: Biomedical Sciences and Applications

Year:

1997

Language:

english

File:

PDF, 835 KB

english, 1997

84

Simultaneous determination of residual tetracyclines in foods by high-performance liquid chromatography with atmospheric pressure chemical ionization tandem mass spectrometry

Hiroyuki Nakazawa, Shigeru Ino, Kayoko Kato, Takaho Watanabe, Yuko Ito, Hisao Oka

Journal:

Journal of Chromatography B: Biomedical Sciences and Applications

Year:

1999

Language:

english

File:

PDF, 270 KB

english, 1999

85

Histopathology of a human allografted kidney with clinically sufficient function

Kohei Shomori, Itaru Kuratate, Takashi Sakatani, Ken Takeuchi, Kaikyu Tei, Makoto Mannami, Akihiko Toshino, Akihiro Oka, Hiroji Ohoka, Hisao Ito

Journal:

Clinical Transplantation

Year:

2000

Language:

english

File:

PDF, 221 KB

english, 2000

86

Photochemistry and photocuring properties of thiol-substituted α-aminoalkylphenone as radical photoinitiator

Hisatoshi Kura, Hidetaka Oka, Masaki Ohwa, Tadayoshi Matsumura, Akira Kimura, Yohei Iwasaki, Teruhisa Ohno, Michio Matsumura, Hisao Murai

Journal:

Journal of Polymer Science Part B: Polymer Physics

Year:

2005

Language:

english

File:

PDF, 204 KB

english, 2005

87

Development of a condensation technique for thin-layer chromatography/fast-atom bombardment mass spectrometry of non-visible compounds

Hisao Oka, Yoshitomo Ikai, Fumio Kondo, Norihisa Kawamura, Junko Hayakawa, Katsuyoshi Masuda, Ken-Ichi Harada, Makoto Suzuki

Journal:

Rapid Communications in Mass Spectrometry

Year:

1992

Language:

english

File:

PDF, 529 KB

english, 1992

88

Accuracy analysis of three-dimensional bone surface models of the forearm constructed from multidetector computed tomography data

Kunihiro Oka, Tsuyoshi Murase, Hisao Moritomo, Akira Goto, Kazuomi Sugamoto, Hideki Yoshikawa

Journal:

The International Journal of Medical Robotics and Computer Assisted Surgery

Year:

2009

Language:

english

File:

PDF, 357 KB

english, 2009

89

Corrective osteotomy using customized hydroxyapatite implants prepared by preoperative computer simulation

Kunihiro Oka, Tsuyoshi Murase, Hisao Moritomo, Akira Goto, Kazuomi Sugamoto, Hideki Yoshikawa

Journal:

The International Journal of Medical Robotics and Computer Assisted Surgery

Year:

2010

Language:

english

File:

PDF, 267 KB

english, 2010

90

Determination of Phthalates in Diet and Bedding for Experimental Animals Using Gas Chromatography-Mass Spectrometry

Fumio Kondo, Masanao Okumura, Hisao Oka, Hiroyuki Nakazawa, Shun-ichiro Izumi, Tsunehisa Makino

Journal:

Bulletin of Environmental Contamination and Toxicology

Year:

2010

Language:

english

File:

PDF, 195 KB

english, 2010

91

Biomedical mass spectrometry

Mitsutoshi Setou, Hisao Oka

Journal:

Analytical and Bioanalytical Chemistry

Year:

2011

Language:

english

File:

PDF, 76 KB

english, 2011

92

Oct6, a transcription factor controlling myelination, is a marker for active nerve regeneration in peripheral neuropathies

Teruaki Kawasaki, Nobuyuki Oka, Hisao Tachibana, Ichiro Akiguchi, Hiroshi Shibasaki

Journal:

Acta Neuropathologica

Year:

2003

Language:

english

File:

PDF, 366 KB

english, 2003

93

Correction of severe wrist deformity following physeal arrest of the distal radius with the aid of a three-dimensional computer simulation

Tsuyoshi Murase, Kunihiro Oka, Hisao Moritomo, Akira Goto, Kazuomi Sugamoto, Hideki Yoshikawa

Journal:

Archives of Orthopaedic and Trauma Surgery

Year:

2009

Language:

english

File:

PDF, 529 KB

english, 2009

94

Accuracy of corrective osteotomy using a custom-designed device based on a novel computer simulation system

Kunihiro Oka, Tsuyoshi Murase, Hisao Moritomo, Akira Goto, Ryoji Nakao, Kazuomi Sugamoto, Hideki Yoshikawa

Journal:

Journal of Orthopaedic Science

Year:

2011

Language:

english

File:

PDF, 622 KB

english, 2011

95

Analysis of crude drugs using reversed-phase TLC/scanning densitometry. (II) Identification of ginseng, red ginseng, gentian, Japanese gentian, pueraria root, gardenia fruit, schisandra fruit and ginger

Tsutomu Ohno, Eiichi Mikami, Hisao Oka

Journal:

Journal of Natural Medicines

Year:

2006

Language:

english

File:

PDF, 203 KB

english, 2006

96

Morphologic Evaluation of Chronic Radial Head Dislocation: Three-dimensional and Quantitative Analyses

Kunihiro Oka, Tsuyoshi Murase, Hisao Moritomo, Kazuomi Sugamoto, Hideki Yoshikawa

Journal:

Clinical Orthopaedics and Related Research®

Year:

2010

Language:

english

File:

PDF, 346 KB

english, 2010

97

Improvement of chemical analysis of antibiotics: XX. Basic study on high-performance liquid chromatographic determination of four polyether antibiotics pre-derivatized with 1-bromoacetylpyrene

Hirohiko Asukabe, Hideaki Murata, Ken-Ichi Harada, Makoto Suzuki, Hisao Oka, Yoshitomo Ikai

Journal:

Journal of Chromatography A

Year:

1993

Language:

english

File:

PDF, 657 KB

english, 1993

98

Identification of unlawful food dyes by thin-layer chromatography-fast atom bombardment mass spectrometry

]Hisao Oka, Yoshitomo Ikaia, Tsutomo Ohno, Norihisa Kawamura, Junko Hayakawa, Ken-ichi Harada, Makoto Suzuki

Journal:

Journal of Chromatography A

Year:

1994

Language:

english

File:

PDF, 547 KB

english, 1994

99

Preparation and reactions of bis(triphenylphosphine)palladium(0)

Hisao Urata, Hiroharu Suzuki, Yoshihiko Moro-oka, Tsuneo Ikawa

Journal:

Journal of Organometallic Chemistry

Year:

1989

Language:

english

File:

PDF, 640 KB

english, 1989

100

Application of ion-exchange cartridge clean-up in food analysis: VI. Determination of six penicillins in bovine tissues by liquid chromatography–electrospray ionization tandem mass spectrometry

Yuko Ito, Tomomi Goto, Hisao Oka, Hiroshi Matsumoto, Kazue Takeba

Journal:

Journal of Chromatography A

Year:

2004

Language:

english

File:

PDF, 96 KB

english, 2004