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11.
Dewar PJ MacGillivray TF Crispo SM Smith-Palmer T 《Journal of colloid and interface science》2000,228(2):253-258
Silica spheres were prepared by the St?ber method, and the method of labeling with pyrene, using aminopropylysilane as the linking agent, was optimized. Excimers between particles were formed when high concentrations of label were used. Both surfactant and polyelectrolyte addition were able to cause floc formation when added to suspensions of the silica, but only the surfactant changed the I(1)/I(3) ratio and diminished excimer formation. Copyright 2000 Academic Press. 相似文献
12.
Francesca Crispo 《Journal of Mathematical Fluid Mechanics》2008,10(3):311-325
We consider the motion of a non-Newtonian fluid with shear dependent viscosity between two cylinders. We prove regularity
results for the second derivatives of the velocity and the first derivatives of the pressure up to the boundary. A similar
problem is studied in reference [2] in the case of a flat boundary. Here we extend the techniques applied in [2] to cylindrical
coordinates.
相似文献
13.
Quantum Zeno and anti-Zeno paradoxes 总被引:1,自引:0,他引:1
Continuous observation of a time independent projection operator is known to prevent change of state (the quantum Zeno paradox).
We discuss the recent result that generic continuous measurement of time dependent projection operators will in fact ensure
change of state: an anti-Zeno paradox. 相似文献
14.
Francesca Crispo 《Acta Appl Math》2014,130(1):237-250
In this paper we study the nonlinear Klein-Gordon-Maxwell system $$\left \{\begin{array}{l@{\quad}l} -\Delta u+V(x)u-(2\omega+\phi)\phi u=f(x,u),&x\in{\mathbb{R}}^3,\\ \Delta \phi=(\omega+\phi)u^2,&x\in{\mathbb{R}}^3. \end{array} \right . $$ By means of a variant fountain theorem and the symmetric mountain pass theorem, we obtain the existence of infinitely many large energy solutions. 相似文献
15.
DC magnetization, neutron depolarization and neutron diffraction (with both polarized and unpolarized neutrons) measurements
have been reported for the Co1.1−x
Zn
x
Ge0.1Fe1.2O1 spinels with x=0.5, 0.6 and 0.7. Neutron depolarization and neutron diffraction measurements confirm the presence of a long range ferrimagnetic
ordering of the local canted spins in these ferrite samples. The observed features of low field magnetization have been explained
under the framework of thermally activated domain wall movement of ferrimagnetic arrangement of local canted spins. An important
role of magnetic anisotropy (due to the presence of Co2+ ions) in establishing the magnetic ordering and domain kinetics in these ferrites has been observed. 相似文献
16.
Francesca Crispo Alfonsina Tartaglione 《Mathematical Methods in the Applied Sciences》2007,30(12):1375-1401
We consider the problem of the asymptotic behaviour in the L2‐norm of solutions of the Navier–Stokes equations. We consider perturbations to the rest state and to stationary motions. In both cases we study the initial‐boundary value problem in unbounded domains with non‐compact boundary. In particular, we deal with domains with varying and possibly divergent exits to infinity and aperture domains. Copyright © 2007 John Wiley & Sons, Ltd. 相似文献
17.
粉粒体两相流的电容层析成象测量 总被引:4,自引:0,他引:4
粉粒体系统中的固相浓度分布的在线测量是十分困难的问题.电容层析成象技术是一种近年来发展起来的非侵入式快速浓度场测量技术.它不干扰流场,不受流动中颗粒浓度、加速度、不透明等因素的制约.本文讨论其测量原理、应用、近期进展、存在的主要问题及其解决的对策. 相似文献
18.
ac Conductivity measurements are carried out across the metal to insulator transition in NiAl0.7Cr0.7Fe0.6O4. The low frequency data is analyzed using Summerfield scaling theory for hopping conductivity. The exponent of the scaling
behavior has significantly different values in the conducting and insulating regimes. The hopping frequency and the zero frequency
conductivity are found to increase with temperature, slowly in the metallic regime and rapidly in the insulating regime. 相似文献
19.
D. Crispo 《Fresenius' Journal of Analytical Chemistry》1891,30(1):301-303
Ohne ZusammenfassungIn französischer Sprache eingeschickt. Uebersetzt von der Redaction. 相似文献
20.