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Gu P Haas P Hogan WP Kim SK Matthews JN Myung SS Schnetzer S Thomson GB Zou Y Arisaka K Roberts D Slater W Spencer MB Weaver M Briere RA Cheu E Harris DA Krolak P McFarland KS Roodman A Schwingenheuer B Somalwar SV Wah YW Winstein B Winston R Barker AR Swallow EC Bock GJ Coleman R Crisler M Enagonio J Ford R Hsiung YB Jensen DA O'Dell VR Ramberg E Tschirhart R Collins EM Gollin GD Nakaya T Yamanaka T 《Physical review letters》1996,76(23):4312-4315
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D. Price G. V. Coleman A. R. Horrocks 《Journal of Thermal Analysis and Calorimetry》1993,40(2):649-656
Formation of an activated cellulose (Cellulose) species $$CELLULOSE\xrightarrow[{air}]{{heat}}CELLULOSE*$$ is the designated first stage of cellulose degradation in air [1]. Little is known about either the process or the nature of CELLULOSE*. The transition, designatedT 2, is observed as an exotherm around 300°C as the sample temperature is raised. No corresponding endotherm is observed on cooling. The process is therefore not reversible but is repeatable as subsequent reheating results in the exotherm being observed again. The exotherm is also found to be oxygen dependant. The effect of all the flame retardant treatments studied was to reduceT 2 compared to the value for the untreated cotton. 相似文献
25.
Coleman KS Bailey SR Fogden S Green ML 《Journal of the American Chemical Society》2003,125(29):8722-8723
Single-walled carbon nanotubes have been cyclopropanated under Bingel reaction conditions, and the functionalized nanotubes have been characterized by atomic force microscopy using "chemical tagging" techniques. 相似文献
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Marie-Hélène Paclet Cécile F. Rousseau Campion Yannick Françoise Morel Anthony W. Coleman 《Journal of inclusion phenomena and macrocyclic chemistry》2006,55(3-4):353-357
The effects of para-Sulphonato-calix[4]arene, para-Sulphonato-calix[6]arene and para-Sulphonato-calix[8]arene on the activation of NADPH oxidase in neutrophils has been studied. All three molecules do not induce NADPH oxidase activation, and hence do not stimulate neutrophils. Measurement of cell viability demonstrates that these three water-soluble calix[n]arene derivatives are not cytotoxic. 相似文献
28.
Coleman RS Perez RJ Burk CH Navarro A 《Journal of the American Chemical Society》2002,124(44):13008-13017
Evaluation of the sequence selectivity, noncovalent association, and orientation of the DNA cross-linking agent azinomycin B on its duplex DNA receptor is described. A strong correlation between sequence nucleophilicity and cross-linking yield was observed, and steric effects due to the thymine C5-methyl group were identified. Detailed studies on the role of the azinomycin naphthoate using viscometry, fluorescence contact energy transfer, and DNA unwinding assays point to a nonintercalative binding mode for this group. A kinetic assay for agent regioselectivity was used to determine the orientation of binding and covalent cross-link formation. 相似文献
29.
D. C. Coleman 《Fresenius' Journal of Analytical Chemistry》1997,357(2):209-213
In this article a brief overview of the World Wide Web (WWW) is given, with some examples of the kind of information and
services pertaining to analytical chemistry that can be found there. An existing WWW site that has been set up for analytical
chemists is used as a case in point. The article concludes with a brief look at some of the issues raised by publishing on
the Internet.
Received:15 January 1996 / Accepted: 28 January 1996 相似文献
30.
A method of comparing glass fragments of potential application to forensic sicence has been developed and evaluated. A representative
sample of window glass from England and Wales has been collected and analysed for about 25 elements. An automated radiochemical
separation followed by gamma-spectroscopy was used in order to determine the concentration of the maximum number of elements.
Frequency distributions of the elemental concentration are shown and used to assess the discrimination of the technique and
compare it with the measurement of refractive index. A few simulated cases have been included to demonstrate the possible
application to forensic science problems. 相似文献