Zobrazeno 1 - 10
of 27
pro vyhledávání: '"N K Goh"'
Autor:
Jeffrey B. Harborne, K Toki, N.-K Goh, F Tatsuzawa, L.-S Chia, Jenny Greenham, J.-M Kong, Christine A. Williams, Norio Saito
Publikováno v:
Biochemical Systematics and Ecology. 30:667-675
Two rare anthocyanins, cyanidin 3-(6-malonylglucoside)-7,3′-di(6-sinapylglucoside) and the demalonyl derivative, were characterised as the purple floral pigments of Dendrobium cv. ‘Pompadour’. Nine known flavonol glycosides were also identified
Publikováno v:
Macromolecules. 34:6117-6120
1,4-Di-α-bromomethyl-2,3,5,6-tetrafluorobenzene (1) was prepared from the bromination of 2,3,5,6-tetrafluoro-p-xylene. The product was carefully purified and analyzed by GC/MS, HPLC, FTIR, and 1H N...
Publikováno v:
International Journal of Mathematical Education in Science and Technology. 27:323-327
A chemical equation, comprising nelements interspersed among mspecies (reactants + products) and where the stoichiometric coefficients are represented by algebraic symbols, is shown to be equivalent to a class of linear Diophantine equations as well
Publikováno v:
Journal of Physics: Condensed Matter. 3:9613-9620
The total energy profile or surface for Al-H complexes in a large silicon cluster has been calculated using a self-consistent semi-empirical method. The diffusion path of hydrogen appears to be confined to a low-energy channel in the vicinity of the
Publikováno v:
Journal of Asian natural products research. 8(8)
Two new rearranged abietane diterpenoids, sincoetsin A (1) and sincoetsin B (2), were isolated from the aerial part of Isodon coetsa (Buth-Ham ex D.Don) Hara collected in Singapore, and their structures were determined by spectroscopic methods, espec
Publikováno v:
Water science and technology : a journal of the International Association on Water Pollution Research. 47(1)
The experimental results showed that ozone (O3) oxidation is an effective means to destroy phenolic organic pollutants present in water. High removal efficiencies can be readily achieved for most of the model compounds fortified in aqueous matrices w
Publikováno v:
Journal of Chemical Education. 76:484
Word Juxtapoz, or the use of words, letters, and numerals juxtaposed in a particular manner or format to convey ideas, is shown to be a useful tool for promoting interest in chemical education. In the same league as crossword puzzles, pictorial puzzl
Publikováno v:
Journal of Chemical Education. 71:656
An approach based on the intrinsic parameters of an atom to evaluate Avogadro's Number and assess its accuracy.
Publikováno v:
Zeitschrift für Kristallographie - Crystalline Materials. 172:153-158
Publikováno v:
Journal of Chemical Education. 66:430
One of the aims of the present science curriculum development in Singapore, is to prepare students for acquisition of cognitive thinking and investigative skills. The authors have constructed a mod...