Zobrazeno 1 - 10
of 36
pro vyhledávání: '"H. L. Retcofsky"'
Autor:
H. L. Retcofsky
Publikováno v:
Journal of Chemical Education. 82:380
David Alter’s publications on spectrum analysis preceded that of Kirchoff and Bunsen by approximately five years.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94294c0c43339e6fc928ba3c2a7c9771
https://doi.org/10.1021/ed082p380.2
https://doi.org/10.1021/ed082p380.2
Autor:
H. L. Retcofsky
Publikováno v:
Journal of Chemical Education. 80:1003
There is considerable evidence that spectrum analysis had its origin in western Pennsylvania. In 1854, Dr. David Alter, a physician from Freeport, Pennsylvania, published his work entitled, “On Cer...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af4e9a53e27e80a81fbd0a119deba66d
https://doi.org/10.1021/ed080p1003.1
https://doi.org/10.1021/ed080p1003.1
Autor:
H. L. Retcofsky
Publikováno v:
American Journal of Physics. 62:970-970
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2979ed4d3e31a11eacc31b17fee501a
https://doi.org/10.1119/1.17646
https://doi.org/10.1119/1.17646
Publikováno v:
Fuel. 55:313-317
An efficient Chromatographic separation scheme has been developed to characterize the SYNTHOIL hydrodesulphurization coal liquefaction product. Chromatographic fractions were analysed by nuclear magnetic resonance to determine carbon and hydrogen aro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4aaa591fc8d3a7730cf1852abf2025d
https://doi.org/10.1016/0016-2361(76)90031-4
https://doi.org/10.1016/0016-2361(76)90031-4
Publikováno v:
Analytical Chemistry. 49:585-588
The fraction of aromatic carbon (fac) was determined unambiguously from proton coupled carbon-13 NMR spectra of materials derived from coal, such as coal extracts and SYNTHOIL. Only the carbon disulfide-soluble portion of each material was examined.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b5da243e2e404a171c5c9cd3f2d23de
https://doi.org/10.1021/ac50012a020
https://doi.org/10.1021/ac50012a020
Publikováno v:
Applied Spectroscopy. 30:291-295
Proton, carbon, and nitrogen-14 nuclear magnetic resonance studies are reported of hydrogen bonding between the OH proton of o-phenylphenol (OPP) and the nitrogen electron donor of pyridine (Py). Data are also reported on the hydrogen bonding of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da943f2317307785a9fa44200a13c3ad
https://doi.org/10.1366/000370276774457227
https://doi.org/10.1366/000370276774457227
Publikováno v:
Analytical Chemistry. 50:368-371
An NMR method is described for the characterization and quantitation of hydroxyl groups in complex organic mixtures by formation of their trimethylsilyl (TMS) derivatives. A series of model compounds was used to demonstrate the ninefold enhancement i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::689772d19f6703260f896b481bce5181
https://doi.org/10.1021/ac50024a048
https://doi.org/10.1021/ac50024a048
Autor:
H. L. Retcofsky, Robert A. Friedel
Publikováno v:
The Journal of Physical Chemistry. 71:3592-3596
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc2ac08275b697b0d084dcf4393027e8
https://doi.org/10.1021/j100870a038
https://doi.org/10.1021/j100870a038
Autor:
H. L. Retcofsky, Robert A. Friedel
Publikováno v:
The Journal of Physical Chemistry. 72:290-293
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c571e4174ad38aa66a11f88c78ad260
https://doi.org/10.1021/j100847a055
https://doi.org/10.1021/j100847a055
Autor:
H. L. Retcofsky, R. A. Friedel
Publikováno v:
Journal of the American Chemical Society. 94:6579-6584
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06477b93326bcfaa2a88e72931f96295
https://doi.org/10.1021/ja00774a003
https://doi.org/10.1021/ja00774a003