Zobrazeno 1 - 10
of 15
pro vyhledávání: '"CHOL-YOO CHOI"'
Publikováno v:
The Journal of Physical Chemistry. 89:294-300
Photophysical parameters have been determined for coumarin laser dyes in a variety of organic solvents, water, and mixed media. The response of fluorescence emission yield and lifetime to changes in solvent polarity was a sensitive function of coumar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a1917aad0ec947551c9879d6088d6ec
https://doi.org/10.1021/j100248a024
https://doi.org/10.1021/j100248a024
Publikováno v:
Energy & Fuels. 3:528-533
Resinite, sporinite, vitrinite, and inertinite macerals were separated from two high-volatile bituminous coals obtained from the Argonne Premium Coal Sample Program and one high-volatile bituminous coal from The Pennsylvania State University Coal Sam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b502bf938d0cf244ae8851d2feb3351
https://doi.org/10.1021/ef00016a017
https://doi.org/10.1021/ef00016a017
Publikováno v:
Energy & Fuels. 1:270-273
Alkylation de deux charbons bitumineux hautement volatils a l'aide de produits marques au 13 C (methyl et butyl iodure). Le produit de la reaction est analyse par spectrometrie RMN 13 C en vue de determiner l'etendue de l'alkylation-O et-C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60a9878bc37ee255ffb4a3b95bc0c27d
https://doi.org/10.1021/ef00003a008
https://doi.org/10.1021/ef00003a008
Publikováno v:
The Journal of Organic Chemistry. 49:2705-2708
The fluorescence of 7-aminocoumarins is quenched by a variety of organic electron donors or acceptors in acetonitrile. In general, donors with half-wave oxidation potentials less positive than 1.0 V vs SCE and acceptors with reduction potentials less
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1d8577819fe876d2b9e6db0ab65cb65
https://doi.org/10.1021/jo00189a010
https://doi.org/10.1021/jo00189a010
Publikováno v:
Energy & Fuels. 3:38-42
Adsorption of surfactants by coals and their constituent maceral groups was studied by using small-scale radiotracer and NMR techniques. Surfactants are adsorbed by coals and macerals until the available surface area is saturated or the equilibrium c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52d15116f919a78924caff83dbc294db
https://doi.org/10.1021/ef00013a007
https://doi.org/10.1021/ef00013a007
Autor:
Chol Yoo Choi, Gary R. Dyrkacz
Publikováno v:
Energy & Fuels. 3:579-585
The addition of aqueous base to a suspension of coal in tetrahydrofuran leads to the comminution of coal macerals. Density gradient centrifugation was used to monitor the density changes of the particles of mixed maceral composition as they separated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0f3d9c60709c3643c0214df9bc226de
https://doi.org/10.1021/ef00017a009
https://doi.org/10.1021/ef00017a009
Publikováno v:
Energy & Fuels. 1:280-286
On etudie une methode separation des maceraux du charbon par une alkylation suivie d'une centrifugation a gradient de densite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1056d22fa6360ffee56bd8328cc1f41c
https://doi.org/10.1021/ef00003a010
https://doi.org/10.1021/ef00003a010
Autor:
Chol Yoo Choi, Leon M. Stock
Publikováno v:
The Journal of Organic Chemistry. 49:2871-2875
Etude de la reduction du benzophenone par des molecules donneuses d'hydrogene telles que la tetraline et le dihydroanthracene entre 300 et 400°C. Mise en evidence de trois stades distincts de la reaction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8bbb5a89eb99b83ac21c705a676c3147
https://doi.org/10.1021/jo00190a005
https://doi.org/10.1021/jo00190a005
Autor:
CHOL-YOO CHOI, LEON M. STOCK
Publikováno v:
Chemistry and Characterization of Coal Macerals ISBN: 9780841208384
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9756815df1d41b4b00cac97e32e535e
https://doi.org/10.1021/bk-1984-0252.ch010
https://doi.org/10.1021/bk-1984-0252.ch010
Publikováno v:
Chemischer Informationsdienst. 16
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::146d3924dcaf7f54f8a237f3a86098d2
https://doi.org/10.1002/chin.198523041
https://doi.org/10.1002/chin.198523041