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921.
922.
K. Jones 《Chromatographia》1991,32(9-10):469-480
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924.
The structure of the N‐heterocyclic gallium hydride complex, [GaH2I{CN(Mes)C2H2N(Mes)}], Mes = mesityl, shows both hydride ligands to be bonded to the distorted tetrahedral gallium centre. Copyright © 2003 John Wiley & Sons, Ltd. 相似文献
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926.
Gregory G Wildgoose Shelley J Wilkins Gareth R Williams Robert R France David L Carnahan Li Jiang Timothy G J Jones Richard G Compton 《Chemphyschem》2005,6(2):352-362
We demonstrate that graphite powder and multiwalled carbon nanotubes (MWCNTs) can be derivatised by 4-nitrobenzylamine (4-NBA) simply by stirring the graphite powder or MWCNTs in a solution of acetonitrile containing 10 mM 4-NBA. We propose that 4-NBA partially intercalates at localised edge-plane or edge-plane-like defect sites and this hypothesis with a range of experimental data provided by electrochemistry in both aqueous and nonaqueous media, electron microscopy and X-ray powder diffraction. 相似文献
927.
Joseph H. Chan David P. Baccanari Robert L. Tansik Christine M. Boytos Sharon K. Rudolph Andrew D. Brown Jean S. Hong Lee F. Kuyper Michael L. Jones 《Journal of heterocyclic chemistry》1997,34(1):145-151
A series of novel 1,3-diamino-7,8,9,10-tetrahydropyrido[3,2-f]quinazolines were synthesized starting from 6-amino-5-cyanoquinoline (4). These compounds inhibited Candida albicans dihydrofolate reductase with Ki values of ≤0.60 aM. One analogue exhibited moderate in vivo efficacy in a C. albicans-infected mouse model. 相似文献
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Jennifer A Rust Joaquim A Nóbrega Clifton P Calloway Bradley T Jones 《Analytical sciences》2005,21(8):1009-1013
A continuum-source tungsten coil electrothermal atomic absorption spectrometer has been assembled, evaluated, and employed in four different applications. The instrument consists of a xenon arc lamp light source, a tungsten coil atomizer, a Czerny-Turner high resolution monochromator, and a linear photodiode array detector. This instrument provides simultaneous multi-element analyses across a 4 nm spectral window with a resolution of 0.024 nm. Such a device might be useful in many different types of analyses. To demonstrate this broad appeal, four very different applications have been evaluated. First of all, the temperature of the gas phase was measured during the atomization cycle of the tungsten coil, using tin as a thermometric element. Secondly, a summation approach for two absorption lines for aluminum falling within the same spectral window (305.5-309.5 nm) was evaluated. This approach improves the sensitivity without requiring any additional preconcentration steps. The third application describes a background subtraction technique, as it is applied to the analysis of an oil emulsion sample. Finally, interference effects caused by Na on the atomization of Pb were studied. The simultaneous measurements of Pb and Na suggests that negative interference arises at least partially from competition between Pb and Na atoms for H2 in the gas phase. 相似文献
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