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101.
Mirenskaya I. I. Litvinenko V. I. Blank A. B. Belikov V. V. 《Chemistry of Natural Compounds》1970,6(6):781-782
Chemistry of Natural Compounds - 相似文献
102.
J. Sekulic J.E. ten Elshof D.H.A. Blank 《Journal of Sol-Gel Science and Technology》2004,31(1-3):201-204
A procedure for the preparation of microporous titania membranes by the polymeric sol-gel technique is reported. The influence of acid/titanium ratio, water/titanium ratio, method of mixing components and refluxing time on particle size and sol stability was investigated. The thermal evolution, structural characteristics and liquid permeation properties of calcined materials were studied. Highly reproducible amorphous microporous titania layers with pore sizes ≤0.8 nm were obtained on both mesoporous γ-alumina and titania/zirconia coated substrates. The upper limit of thermal stability of the amorphous phase is ~300°C. Higher calcination temperatures led to phase transformation into anatase, which was accompanied by a collapse of the microstructure. The material was found to be chemically stable in a wide pH interval. 相似文献
103.
J. Giovinazzo B. Blank C. Borcea M. Chartier S. Czajkowski G. de France R. Grzywacz Z. Janas M. Lewitowicz F. de Oliveira Santos M. Pfützner M.S. Pravikoff J.C. Thomas 《The European Physical Journal A - Hadrons and Nuclei》2001,11(3):247-249
In an experiment at the SISSI/LISE3 facility of GANIL, the most proton-rich zinc isotopes 55,56Zn have been observed for the first time. The experiment was performed using a high-intensity 58Ni beam at 74.5 MeV/nucleon impinging on a nickel target. The identification of 55,56Zn opens the way to 54Zn, a good candidate for two-proton radioactivity according to theoretical predictions.
Received: 31 October 2000 / Accepted: 9 November 2000 相似文献
104.
Ohne Zusammenfassung 相似文献
105.
106.
Michael Blank 《Journal of statistical physics》2010,140(1):170-197
A new class of exclusion type processes acting in continuum with synchronous updating is introduced and studied. Ergodic averages
of particle velocities are obtained and their connections to other statistical quantities, in particular to the particle density
(the so called Fundamental Diagram) is analyzed rigorously. The main technical tool is a “dynamical” coupling applied in a
nonstandard fashion: we do not prove the existence of the successful coupling (which even might not hold) but instead use
its presence/absence as an important diagnostic tool. Despite that this approach cannot be applied to lattice systems directly,
it allows to obtain new results for the lattice systems embedding them to the systems in continuum. Applications to the traffic
flows modelling are discussed as well. 相似文献
107.
108.
Catalan G Janssens A Rispens G Csiszar S Seeck O Rijnders G Blank DH Noheda B 《Physical review letters》2006,96(12):127602
Thin films of PbTiO3, a classical ferroelectric, have been grown under tensile strain on single-crystal substrates of DyScO3. The films, of only 5 nm thickness, grow fully coherent with the substrate, as evidenced by synchrotron x-ray diffraction. A mapping of the reciprocal space reveals intensity modulations (satellites) due to regularly spaced polar domains in which the polarization appears rotated away from the substrate normal, characterizing a low-symmetry phase not observed in the bulk material. This could have important practical implications since these phases are known to be responsible for ultrahigh piezoelectric responses in complex systems. 相似文献
109.
L. P. Eksperiandova K. N. Belikov S. V. Khimchenko T. A. Blank 《Journal of Analytical Chemistry》2010,65(3):223-228
The papers takes stock of different methods for evaluating the detection (c
min) and determination (c
lim) limits of components described in the literature and presents a comparative analysis of the results of such evaluations.
It is shown that use of the data on the fluctuations of the blank experiment, in spite of their wide application for such
evaluations, gives ambiguous estimates for c
min and c
lim. The most correct method for evaluating the specified parameters is the experimental determination of the actual analyte
concentration (content) from the empirical concentration dependence of the relative standard deviation. In case when this
estimation method cannot be used, it is recommended to evaluate c
lim by the lower boundary of the calibration graph. The article may be useful for inexperienced analysts experimenters in choosing
a method for evaluating the results obtained. 相似文献
110.
P. Allenspach J. Mesot U. Staub M. Guillaume A. Furrer S. -I. Yoo M. J. Kramer R. W. McCallum H. Maletta H. Blank H. Mutka R. Osborn M. Arai Z. Bowden A. D. Taylor 《Zeitschrift für Physik B Condensed Matter》1994,95(3):301-310
Neutron diffraction, neutron spectroscopy and magnetization measurements have been employed to study the structural, electronic, and magnetic behavior of eleven compounds with the general formula Nd1+y
Ca
v
Ba2–y–v
Cu3O
x
(0y0.5; 0v0.25; 6x7). The structure turned out to react to oxygen reduction similar as other 123-compounds, yielding discontinuities close to the metal-insulator-transition and the well-known relations of bond lengths as a function ofT
c. The crystalline electric field (CEF) interaction, splitting the 10-fold degenerate ground-state J-multiplet of the Nd3+-ions into five doublet states, was investigated by neutron spectroscopy. The derived CEF parameters have been used to determine changes in the electronic surroundings of the Nd3+ ions. In addition, with the help of the CEF parameters the thermodynamic magnetic properties of these compounds were calculated which turn out to be in good agreement with the experimental data. 相似文献