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1.
Baxendale IR Ley SV Lumeras W Nesi M 《Combinatorial chemistry & high throughput screening》2002,5(3):197-199
A two step synthesis of trifluoromethyl ketones from aldehydes is reported. A combination of polymer-supported reagents and sequestering agents were employed to effect the transformation without the need for chromatographic purification. 相似文献
2.
Armaan GÜNSEL Aye USLUOLU Ahmet Turgut BLGL TOSUN Büra Gülnur ARABACI Meryem Nilüfer YARAIR 《Turkish Journal of Chemistry》2020,44(4):923
This work reports on dyeing of nylon/elastane fabric with water-soluble phthalocyanines ( 1-4 ) bearing quinoline 5-sulfonic acid substituents on the peripheral or nonperipheral positions and determining the antibacterial efficiency of the phthalocyanine compounds and the dyed nylon/elastane fabrics. The light, washing, water, perspiration, and rubbing fastness properties of nylon/elastane fabrics dyed with phthalocyanines were also determined. The results showed that all dyed fabrics showed very good wet fastness values. The lightfastness value of the nylon/elastane fabric dyed with phthalocyanine dye ( 1 ) showed a much better value than the others. Also, the antibacterial efficiencies of the dyed nylon fabrics and the dye compounds were investigated against a gram-negative ( Escherichia coli ) and a grampositive ( Staphylococcus aureus ) bacteria by using disc diffusion method. The results showed that the dyed nylon/elastane fabrics and the compounds exhibited antibacterial activities against both bacteria. 相似文献
3.
Rajendra J Baxendale M Dit Rap LG Rodger A 《Journal of the American Chemical Society》2004,126(36):11182-11188
Structures of carbon nanotube/ligand complexes were studied by flow linear dichroism (the differential absorption of light polarized parallel and perpendicular to the flow orientation direction) with the aim of establishing linear dichroism as a technique to study such systems. Anthracene, naphthalene, and DNA were chosen as ligands, and the potential for flow linear dichroism to probe ligands noncovalently (as well as covalently) bound to single-walled nanotubes is reported. Linear dichroism enables the determination of approximate orientations of the ligands on the carbon nanotubes. 相似文献
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Summary Previous results in the theory of large deviations for additive functionals of a diffusion process on a compact manifold M are extended and then applied to the analysis of the Lyapunov exponents of a stochastic flow of diffeomorphisms of M. An approximation argument relates these results to the behavior near the diagonal Δ in M
2 of the associated two point motion. Finally it is shown, under appropriate non-degeneracy conditions, that the two-point
motion is ergodic on M
2-Δ if the top Lyapunov exponent is positive.
At the period when this research was initiated, both authors where guests of the I.M.A. in Minneapolis. The first author was
at Aberdeen University, Scotland when this article was prepared. Throughout the period of this research, the second author
has been partially supported by N.S.F. grant DMS-8611487 and ARO grant DAAL03-86-K-171 相似文献
6.
Baxendale IR Ley SV Smith CD Tranmer GK 《Chemical communications (Cambridge, England)》2006,(46):4835-4837
A general flow process for the multi-step assembly of peptides has been developed and this procedure has been used to successfully construct a series of Boc, Cbz and Fmoc N-protected dipeptides in excellent yields and purities, including an extension of the method to enable the preparation of a tripeptide derivative. 相似文献
7.
Smith CD Baxendale IR Tranmer GK Baumann M Smith SC Lewthwaite RA Ley SV 《Organic & biomolecular chemistry》2007,5(10):1562-1568
The use of three orthogonally tagged phosphine reagents to assist chemical work-up via phase-switch scavenging in conjunction with a modular flow reactor is described. These techniques (acidic, basic and Click chemistry) are used to prepare various amides and tri-substituted guanidines from in situ generated iminophosphoranes. 相似文献
8.
Smith CD Baxendale IR Lanners S Hayward JJ Smith SC Ley SV 《Organic & biomolecular chemistry》2007,5(10):1559-1561
The cycloaddition of acetylenes with azides to give the corresponding 1,4-disubstituted 1,2,3-triazoles is reported using immobilised reagents and scavengers in pre-packed glass tubes in a modular flow reactor. 相似文献
9.
The transverse vibrations of an Euler-Bernoulli beam with axial tension P and axial white noise forcing are given by
10.
Li Zenghu 《数学物理学报(B辑英文版)》1999,19(2):121-126
The author proves a central limit theorem for the critical super Brownian motion, which leads to a Gaussian random field. In the transient case the limitingfield is the same as that obtained by Dawson (1977). In the recurrent case it is aspatially uniform field. The author also give a central limit theorem for the weightedoccupation time of the super Brownian motion with underlying dimension numberd 3, completing the results of Iscoe (1986). 相似文献