排序方式: 共有15条查询结果,搜索用时 15 毫秒
1.
E. Yu. Mironova M. M. Ermilova M. N. Efimov L. M. Zemtsov N. V. Orekhova G. P. Karpacheva G. N. Bondarenko N. A. Zhilyaeva D. N. Muraviev A. B. Yaroslavtsev 《Russian Chemical Bulletin》2013,62(11):2317-2321
Physicochemical properties and catalytic performance of detonation nanodiamonds were studied. Original samples of nanodiamonds and nanodiamonds modified by hydrogen, oxygen, and nitric acid with hydrogen peroxide and infrared-treated were investigated. The catalyst structure and morphology were examined by transmission electron microscopy and IR spectroscopy. All the investigated catalysts were active in the steam reforming of ethanol. The correlation of catalytic properties with composition and structure of the described systems is discussed. The specific surface area of nanodiamonds is changed insignificantly upon modification. 相似文献
2.
A. L. S. Angelis J. Antos M. Beaulieu H. Beker G. Briskin J. Bystricky M. -G. Catanesi P. Cerello S. Dagan G. Dellacasa M. Diehl S. Di Liberto B. Dolgoshein M. Esten C. W. Fabjan A. Gaidot M. Gallio P. Giubellino U. Goerlach C. Guerra L. -A. Hamel S. Konovalov I. Kralik G. London F. Martelli J. -P. Martin M. Masera M. -A. Mazzoni F. Meddi M. -T. Muciaccia S. Muraviev A. Nomerotsky Y. Oren J. -P. Pansart G. Poulard L. Ramello L. Riccati G. Rosa L. Sandor M. Sarris E. Scomparin A. Shmeleva S. Simone S. Smirnov P. Taras J. Urban E. Vercellin 《The European Physical Journal C - Particles and Fields》1998,5(1):63-75
Results are presented on and production in p–W and S–W interactions at 200 GeV/c/nucleon measured via the dimuon decay in a large kinematic region. The data are normalized to
the charged particle multiplicity in the same rapidity interval. They have been collected using the HELIOS/3 muon spectrometer
at the CERN SPS. The ratio , where is the relevant resonance branching fraction, increases between proton and sulphur projectiles, and is somewhat enhanced going from peripheral to central
S–W interactions. This results from an increase in the number of produced 's per charged particle. The ratio is measured in different intervals of p and rapidity. It is not clearly dependent on p, but is larger at higher rapidities. production, likewise normalized to charged multiplicity, is significantly lower in S–W compared to p–W interactions.
Received: 27 October 1997 / Revised version: 5 March 1998 / Published online: 13 July 1998 相似文献
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4.
S. E. Muraviev B. A. Tulupov M. G. Urin 《Zeitschrift für Physik A Hadrons and Nuclei》1992,341(4):383-393
A method to describe quantitatively the one-quasiparticle strength functions is proposed which takes approximately into account the coupling of one-quasiparticle states to many-phonon configurations. The method is used to interpret the appropriate experimental data for medium-heavy spherical nuclei. The results are compared with the calculations made in different theoretical approaches. 相似文献
5.
The influence of temperature (293308 K 1:1 IDA:Ni2+ complex is dominating. The Cu2+-Ni2+ exchange equilibrium from sulfate medium is characterized by the formation of nickel complexes of both stoichiometries within the whole temperature range studied. The dependence of alpha on T in Zn2+-Co2+ exchange system has been shown to be weaker than that in the Cu2+-Ni2+ system. This result is in a good agreement with the predictions made in the first communication of this series. The results of thermostripping experiments carried out for Cu2+-Co2+ exchange have shown that the efficiency of the thermostripping process depends on both the interval of working temperatures (deltaT) and its position on the temperature scale. The efficiency of thermostripping rises with an absolute deltaT value and also increases following the shift of temperature interval to the lower temperature range. 相似文献
6.
The possibility of the creation of an optical source of femtosecond pulses that are smoothly tuned in the telecommunication range using a dispersion-decreasing fiber is demonstrated. The smooth tuning is based on the Raman frequency conversion of ultrashort pulses, which can be effectively tuned due to the compression mechanism for maintaining of a relatively high pulse intensity in the medium with a monotonically decreasing anomalous dispersion. The generation of a 90-fs soliton pulse whose spectrum is smoothly tuned in the wavelength range 1.6–1.8 μm is experimentally demonstrated. 相似文献
7.
Muraviev D Gonzalo A Tikhonov NA Iljin MI Valiente M 《Journal of chromatography. A》2000,867(1-2):57-69
8.
Roman Muraviev 《Mathematics and Financial Economics》2011,5(2):67-99
We provide a detailed characterization of the optimal consumption stream for the additive habit-forming utility maximization
problem, in a framework of general discrete-time incomplete markets and random endowments. This characterization allows us
to derive the monotonicity and concavity of the optimal consumption as a function of wealth, for several important classes
of incomplete markets and preferences. These results yield a deeper understanding of the fine structure of the optimal consumption
and provide a further theoretical support for the classical conjectures of Keynes (The general theory of employment, interest
and money. Cambridge University Press, Cambridge, 1936). 相似文献
9.
A scheme for the construction of fiber laser systems for the generation of tunable ultrashort optical pulses is proposed.
The scheme is based on the self-Raman shift of the soliton frequency in dispersion-decreasing fibers with the subsequent spectral
broadening owing to the supercontinuum generation in a short highly nonlinear fiber and the compression in the corresponding
fiber compressor. An all-fiber laser system for the generation of ultrashort laser pulses in the wavelength range 1.6–2.0
μm is experimentally demonstrated. In particular, the shortest pulses with a duration of 24 fs are generated at wavelengths
of 1.8–1.9 μm, which corresponds to less than four optical cycles. 相似文献
10.
Arunmozhiarasi Armugam Charmian DN Cher KaiYing Lim Dawn CI Koh David W Howells Kandiah Jeyaseelan 《BMC neuroscience》2009,10(1):120