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31.
32.
Katalin Gyarmati 《Acta Mathematica Hungarica》2011,131(4):346-359
Hubert, Mauduit and Sárközy introduced the pseudorandom measure of order ? of binary lattices. This measure studies the pseudorandomness only on box lattices of very special type. In certain applications one may need measures covering a more general situation. In this paper the line measure and the convex measure are introduced. 相似文献
33.
Balázsik K Szori K Szollosi G Bartók M 《Chemical communications (Cambridge, England)》2011,47(5):1551-1552
In competitive racemic hydrogenation of methyl benzoylformate (MBF) + ethyl pyruvate (EP) binary mixture over Pt/Al(2)O(3): k(MBF) > k(EP), but in competitive enantioselective hydrogenation k(MBF) < k(EP); the phenomenon verified for the first time is dependent on the adsorption strength of the surface complexes of various compositions (MBF-Pt, EP-Pt, MBF-CD-Pt, EP-CD-Pt, CD = cinchonidine). 相似文献
34.
Katalin Neur��hr Attila Csik K��lm��n Vad Andr��s Bart��k Gy?rgy Moln��r L��szl�� P��ter 《Journal of Solid State Electrochemistry》2011,15(11-12):2523-2544
The reverse depth profile analysis is a recently developed method for the study of a deposit composition profile in the near-substrate zone. The sample preparation technique enables one to separate the deposit and a thin cover layer from its substrate, and the initial roughness of the sample is much smaller than in the conventional sputtering direction. This technique is particularly suitable to study the zones being formed in the early phase of the electrodeposition of alloys. It has been demonstrated with the reverse depth profile analysis that in many cases when one component of an alloy is preferentially deposited, an initial zone is formed that is rich in the preferentially deposited component. This phenomenon is demonstrated for Ni–Cd, Ni–Sn, Fe–Co–Ni, Co–Ni, and Co–Ni–Cu alloys. The composition change is confined to the initial 150-nm-thick deposit, and it is the result of the interplay of the deposition preference and the depletion of the electrolyte near the cathode with respect to the ion reduced preferentially. The reverse depth profile analysis made it possible to compare the measured and the calculated composition depth profile of electrodeposited multilayers. It has been shown that the decay in the composition oscillation intensity in Co/Cu multilayers with the increase of the sputtering depth can be derived from the roughness measured as a function of the deposit thickness. 相似文献
35.
The root and leaf essential oils, present in trace amounts in Amsonia illustris Woods. (Apocynaceae), were isolated by steam distillation and their chemical constituents identified by GC-FID and GC-MS. More than 80% of the thirty volatile compounds in the leaf oil were identified, the major constituents being mainly sesquiterpenes like a-humulene (14.5%), beta-caryophyllene (12.4%) and guaiol (11.6%). The volatile ingredients of the root oil were pinocampheol, methyl salicylate, (2E,4E)- decadienal, eugenol and trans-isoeugenol. 相似文献
36.
Katalin E. Kvr Victor J. Hruby Du
an Uhrín 《Journal of magnetic resonance (San Diego, Calif. : 1997)》1997,129(2):125-129
A pulsed field gradient version of the sensitivity-enhanced 2D HSQC–TOCSY experiment is proposed for measurement of long-range heteronuclear coupling constants. The coupling constants are obtained by computer-aided analysis of mixed-phase multiplets with and without the heteronuclear splitting. Generation of pure phase data is not required. Since large1JXHandJHHcouplings are used for coherence transfer, smallnJXHcan be measured accurately, which could be difficult to obtain from purely heteronuclear polarization transfer experiments. 相似文献
37.
Katalin Gyarmati 《Periodica Mathematica Hungarica》2006,52(2):9-26
Summary We study the pseudorandom properties of the power generator (which includes as special cases the RSA generator and the Blum--Blum--Shub
generator). In order to estimate the pseudorandom measures character sums with exponential functions are used. 相似文献
38.
39.
Thin-layer Chromatographic behavior of 22 steroids were compared in five systems of different compositions and polarities. Some of the steroids studied are new: mainly aromatic steroid derivatives substituted with hydroxy on carbon-2 or carbon-4, or both carbon-2 and carbon-4 of the aromatic ring: from a biological point of view they are of importance as metabolic intermediates. 相似文献
40.