Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Wei-quan Chen"'
Publikováno v:
Acta Crystallographica Section E, Vol 67, Iss 2, Pp o395-o395 (2011)
The title compound, C26H39NO7, which was isolated from Delphinium anthriscifolium var. majus, has a lycoctonine carbon skeleton containing four six-membered rings (A, B, D and E) and three five-membered rings (C, F and G). Rings A, B and E adopt chai
Externí odkaz:
https://doaj.org/article/2ec48543d0154b2da2afcaa97e27c09b
Autor:
Wei-quan Chen, 陳威銓
104
Research on alternative energy conversion and storage of renewable energy technologies is very important. Oxygen reduction reaction (ORR) plays a key role in the fuel cells. Pt/C remains the most efficient ORR catalysts, but the high cost an
Research on alternative energy conversion and storage of renewable energy technologies is very important. Oxygen reduction reaction (ORR) plays a key role in the fuel cells. Pt/C remains the most efficient ORR catalysts, but the high cost an
Externí odkaz:
http://ndltd.ncl.edu.tw/handle/51469497748667692557
Autor:
Wei-quan Chen, 陳威全
95
An information retrieval system is to search documents in a large database for those which are relevant to a user query. A well-known method called Krylov subspace method is one of subspace methods for IR. It applies the Golub-Kahan bidiagona
An information retrieval system is to search documents in a large database for those which are relevant to a user query. A well-known method called Krylov subspace method is one of subspace methods for IR. It applies the Golub-Kahan bidiagona
Externí odkaz:
http://ndltd.ncl.edu.tw/handle/74139689981784585878
Autor:
Min Chuan Chung, Joey Andrew A. Valinton, Wei Quan Chen, David P. Penaloza, Shiow Huey Chuang, Chun-Hu Chen
Publikováno v:
Chemical Communications. 54:7900-7903
We report a two-step hybridization of N-doped graphene and Ag-decorated Fe2O3 hematite to realize a balanced oxygen adsorption/desorption equilibrium and a laser-coupled ORR (LORR). The stable plateau currents with n values of 3.9 in a wide potential
Publikováno v:
Scientific Reports
A general solvent-dependent protocol directly influencing the oxygen reduction reaction (ORR) in metal oxide/graphene nanohybrids has been demonstrated. We conducted the two-step synthesis of cobalt oxide/N-doped graphene nanohybrids (CNG) with solve
Publikováno v:
Fitoterapia. 83:732-736
A new coumaronochromone, 6,4'-dihydroxy-7,5' -dimethoxy-coumaronochromone (1), together with eleven known flavonoids (2-12) were isolated from the ethanol extract of the aerial part of Derris elliptica. Their structures were elucidated on the basis o
Publikováno v:
Biochemical Systematics and Ecology. 41:35-40
Phytochemical investigation on Aglaia odorata led to the isolations of one new coumarino-lignoid, 8-(7′,8′,9′-propanetriol-4′-methoxy-3′-O-phenylpropanoid)-7-hydroxy-6-methoxycoumarin (1), and nineteen known compounds (2–20). Their struct
Publikováno v:
ChemInform. 44
A new C-methylated flavone glycoside, 5,7-dihydroxy-3-methoxy-6-C-methylflavone 8,4'-di-O-β-D-glucopyranoside (1), was isolated from the twigs and leaves of Picea neoveitchii Mast, together with eight known compounds, 5,7,8,4'-tetrahydroxy-3-methoxy
Publikováno v:
Bioorganicmedicinal chemistry letters. 22(18)
A new C-methylated flavone glycoside, 5,7-dihydroxy-3-methoxy-6-C-methylflavone 8,4'-di-O-β-D-glucopyranoside (1), was isolated from the twigs and leaves of Picea neoveitchii Mast, together with eight known compounds, 5,7,8,4'-tetrahydroxy-3-methoxy