Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Fumio Kita"'
Publikováno v:
Earth, Planets and Space, Vol 74, Iss 1, Pp 1-13 (2022)
Abstract The Hayabusa2 spacecraft succeeded in sampling and returning materials from the C-type, near-Earth asteroid (162173) Ryugu. As part of the Hayabusa2 Initial Analyses, chemical and isotopic compositions of volatile species were measured. The
Externí odkaz:
https://doaj.org/article/57cd795c4c284f79882eac33644ac97d
Publikováno v:
Journal of the American Chemical Society. 121:9265-9275
The lifetimes of 33 1,3-diaryl-1,3-cyclopentanediyl triplet diradicals were determined by laser flash photolysis of the corresponding azoalkane precursors. The first-order decay rate constants range from 0.8 to 16.7 × 105 s-1 in degassed solution at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b85b7eec3ea852b78a70ab03465b9296
https://doi.org/10.1021/ja991362d
https://doi.org/10.1021/ja991362d
Publikováno v:
The Journal of Organic Chemistry. 62:1419-1426
The zero-field splitting D parameter was determined in a 2-MTHF glass matrix at 77 K for a large set (35 derivatives) of para- and meta-substituted 1,3-arylcyclopentane-1,3-diyl triplet diradicals 6. The D values are a sensitive function of electroni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16ced3a0dba79a55ade4091c3fb9e92e
https://doi.org/10.1021/jo9622035
https://doi.org/10.1021/jo9622035
Autor:
S. H. K. Reddy, Werner M. Nau, A. S. Kumar, Heinrich M. Harrer, Waldemar Adam, C. van Barneveld, Wiebke Maas, Fumio Kita, Jakob Wirz, Oliver Emmert
Publikováno v:
Pure and Applied Chemistry. 69:735-742
Electronic substituent effects on the a spin density (pa) and radical stabilization (RSE) of benzyl-type monoradicals are reflected accurately by the D parameters of the triplet diradicals 1 and 2. Hence, the present EPR-spectroscopic ALI scale offer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6920459be27c8dc12b274dec694cf5fb
https://doi.org/10.1351/pac199769040735
https://doi.org/10.1351/pac199769040735
Publikováno v:
Pure and Applied Chemistry. 69:91-96
The D parameter, readily determined by EPR spectroscopy, is a sensitive function of the avera e distance r of separation between the unpaired electrons in the localized triplet 1,3-diradicals 2 (D cc llr ). For convenience, we have defined the differ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ca59580aee8b6ce0ffc257d45223ed9
https://doi.org/10.1351/pac199769010091
https://doi.org/10.1351/pac199769010091
Publikováno v:
Journal of Photochemistry and Photobiology A: Chemistry. 80:187-197
The novel laser jet technique provides sufficiently high photon densities to permit the observation of the photochemistry of photochemically generated radicals (two-photon chemistry) in the liquid phase. Four recent applications of this novel photoch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ed890ed48f2fb49ec6d3235185fe013
https://doi.org/10.1016/1010-6030(93)01031-v
https://doi.org/10.1016/1010-6030(93)01031-v
Autor:
Fumio Kita, Waldemar Adam
Publikováno v:
Journal of the American Chemical Society. 116:3680-3683
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a35a8d04b009401853a8ef3dd93c38c1
https://doi.org/10.1021/ja00088a002
https://doi.org/10.1021/ja00088a002
Autor:
Kohtaro Kawashima, Katsuya Koike, Masakatsu Shioya, Masamichi Sudoh, Shigeki Ohashi, Hiroyoshi Endo, Shushichi Takahashi, Tsuneo Sato, Fumio Kita, Wataru Shirai, Chikahiro Kushida
Publikováno v:
Biological Sciences in Space. 7:9-12
Fertilized eggs of White Leghorn chickens were incubated for 11 days at 37°C in normal condition and then for 7 days under hypergravity (2G) induced by centrifugation. Then the morphologies of muscles isolated from their heart ventricle and femur we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2d84fbc5170d2583e9a36c0e175ef27
https://doi.org/10.2187/bss.7.9
https://doi.org/10.2187/bss.7.9
Publikováno v:
ChemInform. 23
While the triplet-sensitized photolysis of the bicyclicazoalkanes 1 led on denitrogenation to the corresponding bicycloalkanes 2, the laser/liquid jet photochemistry gave additionally also the cyclopentenes 3 by hydrogen 1,2-shift; the amount of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87fd4bce56ce649b771ca8356d1c8c00
https://doi.org/10.1002/chin.199209094
https://doi.org/10.1002/chin.199209094
Autor:
Herbert Platsch, Ralf Finzel, Herbert Walter, Fumio Kita, Gerald Zang, Waldemar Adam, Uwe Denninger
Publikováno v:
ChemInform. 23
The gas-phase pyrolysis, photoinduced electron transfer (PET), and laser-jet and 185-nm photochemistry of 2,3-diazabicyclo[2.2.1]hept-2-ene (1a), syn-7-methyl-2,3-diazabicyclo[2.2.1]hept-2-ene (syn-1b), anti-7-methyl-2,3-diazabicyclo[2.2.1]hept-2-ene
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e616c0ad2e2070520957e8b44e030bfd
https://doi.org/10.1002/chin.199241049
https://doi.org/10.1002/chin.199241049