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1.
A new preparative method is proposed for the separation of natural mixtures of gangliosides into fractions of mono-, di-, and trisialogangliosides which is based on ion-exchange chromatography on a weak anion-exchange resin — Spheron CH 300. The latter ensures a considerably faster separation than the ion-exchange resins usually employed.Scientific-Research Laboratory of Biologically Active Substances of Hydrobionts, USSR Ministry of Health, Moscow. Translated from Khimiya Prirodnykh Soedinenii, No. 1, pp. 28–30, January–February, 1990. 相似文献
2.
Russian Physics Journal - A concept of a hybrid plasma source to be used as a micro satellite thruster is proposed, where the propellant is a liquid gallium–indium alloy. The plasma source... 相似文献
3.
Schneider A. V. Popov S. A. Dubrovskaya E. L. Batrakov A. V. 《Russian Physics Journal》2019,62(5):900-905
Russian Physics Journal - The influence of an external synchronous axial magnetic field on the characteristics of a vacuum-arc discharge is investigated within the range of discharge currents from... 相似文献
4.
Russian Physics Journal - Using the method of spectrally selective photorecording in a nanosecond temporal resolution, the distribution of neutral atoms and single- and double-charged gallium ions... 相似文献
5.
Potential dependences of the angle of contact between perfluorodecaline C10F18 and copper, copper(I) sulfide, and copper telluride Cu4Te3 in 0.1 M CH3COONa are measured. The data are in good agreement with the metal hardness measured in 1 M KOH. The uncharged-surface potentials (USP) for copper, copper(I) sulfide, and copper telluride equal 0.05–0.07, –0.02 to –0.04, and 0.05–0.07 V (NHE) in 0.1 M CH3COONa. Studying the effect of Br– ions shows that USP for copper and Cu2S shift in, respectively, the negative and positive directions with an increase in [Br–]. For copper telluride, USP shifts in the positive direction at low Br– concentrations, and at NaBr concentrations in excess of 0.04 M, in the negative direction. 相似文献
6.
We have discovered that Taylor cone formation on the surface of liquid tungsten in air occurs in anomalously weak electric
fields. This phenomenon is observed exclusively on tungsten and only in the presence of oxygen in the surrounding atmosphere.
This anomaly could be due to the low surface tension of liquid tungsten in an oxygen-containing atmosphere.
Pis’ma Zh. éksp. Teor. Fiz. 63, No. 8, 583–587 (25 April 1996) 相似文献
7.
The velocity spectrum of droplets emitted by a pool explosive-emission cathode was studied. Relation between sizes of droplets
and its maximal velocities over the range of 103−18×104 cm/s have been found. The dependence obtained confirms the mechanism found earlier for the droplet emission under high pressures
developed in explosive emission centers.
Institute of High Current Electronics. Siberian Division of the Russian Academy of Sciences. Translated from Izvestiya Vysshikh
Uchebnykh Zavedenii, Fizika, No. 3, pp. 105–109, March, 1999. 相似文献
8.
Chemistry of Natural Compounds - A new glycolipid, a 1-O-[4-O-(α-D-glucopyranosyl)-α-D-glucopyranuronosyl]-2,3-diglyceride has been isolated from the total cell lipids of Streptomyces LA... 相似文献
9.
10.
I. V. Dorovskikh I. G. Gorichev V. V. Batrakov V. V. Kurilkin A. D. Izotov 《Russian Journal of Inorganic Chemistry》2006,51(1):143-151
Based on an experimental investigation of the effects of the pH and anionic composition on the dissolution rate of chromium(III)
oxide α-Cr2O3 and chromium(III) hydroxide oxide α-CrOOH and subsequent modeling of the process, it is demonstrated that, depending on the
pH, the rate-controlling stage of the dissolution is the CrOH2+ or CrHSO
4
2+
sobulization. 相似文献