Presentations -

二酸化炭素分離に適したクラスレートハイドレートの探索と物性測定

Ohmura Ryo

[Domestic presentation]  化学工学会第46回秋季大会, 

2014.09

, 

Oral presentation (invited, special), 公益社団法人 化学工学会

Crystallographic structure and thermodynamic stability of clathrate hydrates formed with halogen-containing guests

Ryo Ohmura

[International presentation]  2012 "Natural Gas Hydrate Systems" Gordon Research Conference (Ventura, CA) , 

2012.03

, 

Oral presentation (invited, special)

Crystal growth of clathrate hydrates in hydrophobic-guest fluid + liquid-water systems

Ohmura Ryo

[International presentation]  ACS 241st National Meeting (Anaheim, CA, USA) , 

2011.03

, 

Oral presentation (invited, special), American Chemical Society

Understanding thermodynamics of clathrate hydrates toward energy/environment technology innovations

Ohmura Ryo

[International presentation]  21st IUPAC International Conference on Chemical Thermodynamics Conference (ICCT-2010) (Tsukuba) , 

2010.08

, 

Oral presentation (invited, special), IUPAC

Combustion Characteristics of Methane Hydrate in a Laminar Boundary Layer

Yuki Nakmura, Ryoji Katsuki, Takeshi Yokomori, Ryo Ohmura, Toshihisa Ueda, Masahiro Takahashi, Toru Iwasaki and Kazuo Uchida

[International presentation]  6th International Conference on Gas Hydrates (ICGH 2008) (Vancouver) , 

2008.07

, 

Poster presentation

Dissociation of Methane Hydrate Crystals in a Porous Medium: A Pore Scale Visual/Observational Study

Daisuke Katsuki, Ryo Ohmura, Takao Ebinuma and Hideo Narita

[International presentation]  6th International Conference on Gas Hydrates (ICGH 2008) (Vancouver) , 

2008.07

, 

Poster presentation

Fire Extinction Utilizing Carbon Dioxide Hydrate

Takashi Hatakeyama, Eisuke Aida, Takeshi Yokomori, Ryo Ohmura and Toshihisa Ueda

[International presentation]  6th International Conference on Gas Hydrates (ICGH 2008) (Vancouver) , 

2008.07

, 

Poster presentation

Gibbs Ensemble Monte Carlo Simulations for Methane/Liquid-Water and Methane/Hydrate Phase Equilibrium

Keisuke Minatoya, Ryo Ohmura, Amadeu K. Sum and Kenji Yasuoka

[International presentation]  6th International Conference on Gas Hydrates (ICGH 2008) (Vancouver) , 

2008.07

, 

Poster presentation

Hydrate Slurry Formation from Cyclopentane-in-Water Emulsions

Masahiro Nakajima, Ryo Ohmura, Jun-ichi Ochiai, Makoto Ozaki, Tomohiro Ogawa and Yasuhiko H. Mori

[International presentation]  6th International Conference on Gas Hydrates (ICGH 2008) (Vancouver) , 

2008.07

, 

Oral presentation (general)

Phase equilibrium for clathrate hydrates formed with methane, ethane, propane or carbon dioxide at temperatures below the freezing point of water

Keita Yasuda and Ryo Ohmura

[International presentation]  6th International Conference on Gas Hydrates (ICGH 2008) (Vancouver) , 

2008.07

, 

Poster presentation

Stability of Methane, Fluoromethane and Chloromethane Clathrate Hydrates Investigated by the First Principle Calculations

Akira Hori, Satoshi Takeya, Ryo Ohmura and Tsutomu Uchida

[International presentation]  6th International Conference on Gas Hydrates (ICGH 2008) (Vancouver) , 

2008.07

, 

Poster presentation

Statistical-Thermodynamics Modeling of Clathrate Hydrate Forming Systems Suitable as Working Media of a Hydrate-Based Refrigeration System

Fumihito Takeuchi, Ryo Ohmura and Kenji Yasuoka

[International presentation]  6th International Conference on Gas Hydrates (ICGH 2008) (Vancouver) , 

2008.07

, 

Poster presentation

Raman Spectroscopic Measurements of Fluoromethane Clathrate Hydrates

Tsutomu Uchida, Ryo Ohmura and Akira Hori

[International presentation]  6th International Conference on Gas Hydrates (ICGH 2008) (Vancouver) , 

2008.07

, 

Poster presentation

Thermodynamic Simulations of Isobaric Hydrate Forming Operations for Natural Gas Storage

Naotaka Imura, Hiroyuki Ogawa, Tatsuya Miyoshi, Ryo Ohmura and Yasuhiko H. Mori

[International presentation]  6th International Conference on Gas Hydrates (ICGH 2008) (Vancouver) , 

2008.07

, 

Poster presentation

Fundamental Characteristics of a Methanol Reforming by a Partial Oxidation Reaction

Yasufumi Tokunaga, I.N.G Wardana, Ryo Ohmura, Masahiko Mizomoto, Toshihisa Ueda, Yukio Naruse, Shigeru Inami and Eiji Kato

[International presentation]  Eighth International Symposium on Transport Phenomena (韓国) , 

2007.08

, 

Oral presentation (general)

Solubility of Methane in Water at High-Pressure/Low-Temperature Conditions by Gibbs Ensemble Monte Carlo Simulation

Keisuke Minatoya, Tatsuya Miyoshi, Ryo Ohmura and Kenji Yasuoka

[International presentation]  Eighth Asian Thermophysical Property Conference (福岡) , 

2007.08

, 

Poster presentation

Predicting thermodynamic stability of clathrate hydrates based on molecular-dynamics simulations and its confirmation by phase-equilibrium measurements

Tatsuya Miyoshi, Ryo Ohmura and Kenji Yasuoka

[International presentation]  11th International Conference on the Physics and Chemistry of Ice (Bremerhaven, Germany) , 

2006.07

, 

Poster presentation

Formation and Growth of Structure-H Hydrate Crystals on a Water Drop in Contact with Methane Gas and Large-Molecule Guest-Substance Liquid

Ryo Ohmura, Sadatoshi Matsuda, Sinya Ito, Takao Ebinuma and Hideo Narita

[International presentation]  5th International Conference on Gas Hydrates (Trondheim, Norway) , 

2005.06

, 

Oral presentation (general)

Phase equilibrium measurements and crystallographic analyses on structure-H type gas hydrate formed from CH4-CO2-neohexane-water system

Tsutomu Uchida, Ryo Ohmura, Ikuko Y. Ikeda, Yasushi Kamata, Jiro Nagao and Satoshi Takeya

[International presentation]  5th International Conference on Gas Hydrates (Trondheim, Norway) , 

2005.06

, 

Poster presentation

Structure analysis of clathrate hydrate crystals systhesized from water + methane and large-molecule substances

Satoshi Takeya, Ryo Ohmura, Akira Hori and Tsutomu Uchida

[International presentation]  5th International Conference on Gas Hydrates (Trondheim, Norway) , 

2005.06

, 

Poster presentation

The stabilities of structure-H gas hydrates including various guests evaluated from the cohesive energy calculations by the semiempirical molecular orbital method

Akira Hori, Ryo Ohmura, Satoshi Takeya and Tsutomu Uchida

[International presentation]  5th International Conference on Gas Hydrates (Trondheim, Norway) , 

2005.05

, 

Poster presentation

Effects of Kinetic Inhibitors on the Formation and Growth of Hydrate Crystals at a Liquid-Liquid Interface

Hiroyuki Sakaguchi, Ryo Ohmura and Yasuhiko H. Mori

[International presentation]  4th International Conference on Gas Hydrates (横浜) , 

2002.05

, 

Poster presentation

Growth Behavior of Structure-I Hydrate Film at Gas-Liquid Interface: Morphology Observations and Film-Thickness Measurements

Chieju Ho, Shinichiro Honda, Ryo Ohmura and Yasuhiko H. Mori

[International presentation]  4th International Conference on Gas Hydrates (横浜) , 

2002.05

, 

Poster presentation

Structure-I and Structure-H Hydrate Formation Using Water Spraying

Ryo Ohmura, Shigetoyo Kashiwazaki, Saburo Shiota, Hideyuki Tsuji and Yasuhiko H. Mori

[International presentation]  4th International Conference on Gas Hydrates (横浜) , 

2002.05

, 

Poster presentation

Vaporization of Hydrate-Forming Liquid Drops Superheated in Liquid Water - Effect of Clathrate-Hydrate Shells Encapsulating Drops

Y.H. Mori, R. Ohmura, I. Kobayashi

[International presentation]  International Seminar on Vapor Explosions and Explosive Eruptions (仙台) , 

1997.05

, 

Oral presentation (general)

Will CO2-Hydrate Films Rest on Submarine CO2-Pond Surfaces?

Ryo Ohmura and Yasuhiko H. Mori

[International presentation]  International Workshop on Gas Hydrate Studies (つくば) , 

1997.03

, 

Poster presentation