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31.
C. S. Newton 《辐射效应与固体损伤》2013,168(4)
Abstract Scattering Theory (Aspects of Scattering Processes in Atomic, Nuclear and Particle Physics) Edited by A. O. Barut Gordon and Breach Science Publishers Inc., 1969, pp. viii + 431. 相似文献
32.
The wetting of solid surfaces can be modified by altering the surface free energy balance between the solid, liquid, and vapor phases. Here we show that liquid dielectrophoresis induced by nonuniform electric fields can be used to enhance and control the wetting of dielectric liquids. In the limit of thick droplets, we show theoretically that the cosine of the contact angle follows a simple voltage squared relationship analogous to that found for electrowetting on dielectric. Experimental observations confirm this predicted dielectrowetting behavior and show that the induced wetting is reversible. Our findings provide a noncontact electrical actuation process for meniscus and droplet control. 相似文献
33.
G. S. Jamieson R. Wrenshall Ericson V. Lenher W. G. Crawford J. W. Mellor B. Neumann R. K. Murphy Kaiser A. J. Rossi E. Knecht P. W. Shimer E. B. Shimer F. A. Gooch H. D. Newton W. M. Thornton Jr. F. Bourion K. Schröder J. Bellucci L. Grassi C. R. Mc Cabe und A. R. Scott 《Fresenius' Journal of Analytical Chemistry》1915,54(12):606-617
Ohne Zusammenfassung 相似文献
34.
Kokovi M. Lawson DakuRoger F. Newton Simon P. PearceJulia Vile Jonathan M.J. Williams 《Tetrahedron letters》2003,44(27):5095-5098
Reverse-phase glass beads have been employed in Suzuki reactions to provide, in aqueous media, a route to diverse polar substrates in good yield and with low levels of palladium leaching. 相似文献
35.
S. Yu. Kun D. J. Hinde M. Dasgupta J. R. Leigh J. C. Mein C. R. Morton J. O. Newton B. A. Robson H. Timmers A. V. Vagov 《Zeitschrift für Physik A Hadrons and Nuclei》1997,359(3):263-270
Excitation functions for the strongly dissipative collision 19 F(E lab = 135–140 MeV)+89 Y with an energy step of 250 keV in the lab. system have been measured. The data are consistent with previous measurements and exhibit oscillations, which are interpreted as an indication of quantum chaotic phenomena in dissipative heavy-ion collisions. The Fourier component of the energy autocorrelation of the total projectile-like angle-integrated dissipative yield has been calculated and is found to have a pulsing behaviour with a time interval between sequential pulses equal to the period of the coherent nuclear rotation. This provides another possibility of experimentally detecting quantum chaos in dissipative heavy-ion collisions. 相似文献
36.
Finding optimal Golomb rulers is an extremely challenging combinatorial problem. The distance between each pair of mark is unique in a Golomb ruler. For a given number of marks, an optimal Golomb ruler has the minimum length. Golomb rulers are used in application areas such as X-ray crystallography, radio astronomy, information theory, and pulse phase modulation. The most recent optimal Golomb ruler search algorithm hybridises a range of techniques such as greedy randomised adaptive search, scatter search, tabu search, clustering techniques, and constraint programming, and obtains optimal Golomb rulers of up to 16 marks with very low success rates. In this paper, we provide tight upper bounds for Golomb ruler marks and present heuristic-based effective domain reduction techniques. Using these along with tabu and configuration checking meta-heuristics, we then develop a constraint-based multi-point local search algorithm to perform a satisfaction search for optimal Golomb rulers of specified length. We then present an algorithm to perform an optimisation search that minimises the length using the satisfaction search repeatedly. Our satisfaction search finds optimal Golomb rulers of up to 19 marks while the optimisation search finds up to 17 marks. 相似文献
37.
Neil J. Shirtcliffe Glen McHale Michael I. Newton 《Journal of Polymer Science.Polymer Physics》2011,49(17):1203-1217
Superhydrophobicity is the extreme water repellence of highly textured surfaces. The field of superhydrophobicity research has reached a stage where huge numbers of candidate treatments have been proposed and jumps have been made in theoretically describing them. There now seems to be a move to more practical concerns and to considering the demands of individual applications instead of more general cases. With these developments, polymeric surfaces with their huge variety of properties have come to the fore and are fast becoming the material of choice for designing, developing, and producing superhydrophobic surfaces. © 2011 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 49: 1203–1217, 2011 相似文献
38.
Iglesias-Juez A Kubacka A Fernández-García M Di Michiel M Newton MA 《Journal of the American Chemical Society》2011,133(12):4484-4489
A combination of time-resolved X-ray absorption spectroscopy (XAS), hard X-ray diffraction (HXRD), diffuse reflectance infrared spectroscopy (DRIFTS), and mass spectrometry (MS) reveals a series of size-dependent phenomena at Pd nanoparticles upon CO/(NO+O(2)) cycling conditions. The multitechnique approach and analysis show that such size-dependent phenomena are critical for understanding Pd CO elimination behavior and, particularly, that different Pd(I) and Pd(0) centers act as active species for a size estimated by XAS to be, respectively, below and above ca. 3 nm. The relative catalytic performance of these two noble metal species indicates the intrinsic higher activity of the Pd(I) species. 相似文献
39.
Fernandez FM Hostetler D Powell K Kaur H Green MD Mildenhall DC Newton PN 《The Analyst》2011,136(15):3073-3082
Throughout history, poor quality medicines have been a persistent problem, with periodical crises in the supply of antimicrobials, such as fake cinchona bark in the 1600s and fake quinine in the 1800s. Regrettably, this problem seems to have grown in the last decade, especially afflicting unsuspecting patients and those seeking medicines via on-line pharmacies. Here we discuss some of the challenges related to the fight against poor quality drugs, and counterfeits in particular, with an emphasis on the analytical tools available, their relative performance, and the necessary workflows needed for distinguishing between genuine, substandard, degraded and counterfeit medicines. 相似文献
40.
Zhu X Lu W Zhang Y Reed A Newton B Fan Z Yu H Ray PC Gao R 《Chemical communications (Cambridge, England)》2011,47(37):10311-10313
5,10,15,20-Tetrakis(N-(2-(1H-imidazol-4-yl)ethyl)benzamide)porphyrin produced twice as many singlet oxygen ((1)O(2)) molecules at pH 5.0 (quantum yield 0.53 ± 0.01) than at pH 7.4, whereas the (1)O(2) quenching rate was reduced by a factor of 2.5 for a pH change from 7.4 to 5.0. 相似文献