The results of thermographic investigations of the deasphalted oil obtained by deasphalting West Siberian oil tar with butane with the addition of zinc, nickel, and ferrous iron 2-ethylhexanoates and ...also without additives are presented. The effect of the metal-containing additives on the weight loss process and the change in the magnitude of heat fluxes during thermal exposure was established. The effect on the weight loss of samples of deasphalted oil containing ferrous salts with increase of temperature differs significantly from the effect of additives such as zinc and nickel salts.
The thermodestructive distillation of vacuum gasoil with the production of an ultradispersed catalytic system containing nickel was investigated. The results from the treatment of fuel oil with this ...catalytic system at a pilot plant are presented. It was established that in the presence of nickel 2-ethylhexanoate it is possible by thermodestructive distillation of vacuum gasoil up to 405°С to isolate 61.2 wt.% of distillate fractions. When 10 wt.% of the distillation residue formed during the distillation of vacuum gasoil was used in the treatment of fuel oil by thermal action 64.6 wt.% of distillate was obtained.
A method is described for the preparation of nickel 2‑ethylhexanoate, which is a precursor of a nanoscale catalyst for the cracking of straight‑run fuel oil, vacuum gas oil, heavy oils, and heavy oil ...residues. The first step of this method involves the reaction of an aliphatic carboxylic acid with ammonium hydroxide taken in equivalent ratio in water at 20‑65°C for 20‑60 min to give an aqueous solution of the ammonium salt of this carboxylic acid. In the second step, an aqueous solution of a metal chloride is added to the solution of the ammonium salt and the resultant metal salt of the aliphatic carboxylic acid is extracted with an organic solvent. The yield of nickel 2‑ethylhexanoate ranged from 89 to 98% depending on the reaction conditions.
The differential cross sections for the yields of nuclear fragments at an angle of 3.5◦ in the fragmentation of carbon nuclei with energy 0.95 GeV per nucleon on a beryllium target were measured in ...the FRAGM experiment at the ITEP TWA heavy-ion accelerator. The momentum spectra of fragments were used to test the following four models of ion–ion interactions: BC, INCL++, LAQGSM03.03, and QMD. For light fragments, the slope parameters of the kinetic-energy spectra were obtained in the cumulative region.
Differential cross sections for the production of nuclear fragments at an angle of 3.5° in the fragmentation of 2-GeV/nucleon carbon ions on a beryllium target were measured in the FRAGM experiment ...performed at the ITEP-TWA heavy-ion accelerator-accumulator complex. The predictions of four Monte Carlo models of ion-ion interactions (BC, INCL, LAQGSM, and QMD) were tested on the basis of a comparison with the momentum spectra of fragments. Successes and drawbacks of these models are discussed. The energy spectra of protons and
3
He nuclei in the cumulative region in the projectile rest frame are well described by an exponential dependence, which make it possible to estimate temperature parameters of their emission source.
Momentum spectra of all long lived fragments from 12C fragmentation at 3.5o on different targets have been measured. Obtained fragmentation peak widths are compared with predictions of statistical ...model. An independence of these widths from target nuclei has been checked with high precision.
The «Black Swans» of new liberalism Denil′khanov, A. Kh
Problemy postsovetskogo prostranstva,
11/2019, Letnik:
6, Številka:
3
Journal Article
Recenzirano
Odprti dostop
The term «Black Swan», which is metaphorically used by the modern American scientist Nassim Nicholas Taleb in his theoretical research, means inexplicable randomness of events, their predictability ...and unpredictability for the expert, but the consequences of which are of great importance. In other words, these are important accidents that, according to N. Taleb, affect the result of the experiment and the course of history. In the Russian state there were many global events, each of which could be described as a «Black Swan». The article analyzes only two of them, which have occurred in modern history and have led to disastrous consequences for both Russia and the world, through the prism of the methodology of historical development and political discourse. The political and ideological platform of these events were the ideas of liberalism, the embodiment of which caused unforeseen, stochastic consequences, which became the object of this study. The author substantiates the conclusion that the intellectual part of the Russian society in the development of new concepts of political and state structure was guided by speculative theories and implemented mental schemes in the absence of real objective and subjective prerequisites, turning these processes into socio-political experiments. In the field of practical policy, according to the author, special attention should be paid to the factor of personal responsibility of actors in the development of political strategy and tactical decision-making.
The yields of long-lived nuclear fragments at an angle of 3.5° that originate fromthe fragmentation of carbon ions with an energy of
T
0
= 0.6 GeV per nucleon on a berylliumtarget were measured in ...the FRAGMexperiment at the ITEP TWA heavy-ion accelerator. The momentum spectra of these fragments cover both the fragmentation-maximum region and the cumulative region. The respective differential cross sections change by about five orders of magnitude. The momentum distributions of fragments in the laboratory frame and their kinetic-energy distributions in the rest frame of the fragmenting nucleus are used to test the predictions of four models of ion–ion interactions: BC, INCL++, LAQGSM03.03, and QMD.
Pseudomonas aeruginosa
infects patients with cystic fibrosis, burns, wounds and implants. Previously, our group showed that elevated Ca
2+
positively regulates the production of several virulence ...factors in
P. aeruginosa
, such as biofilm formation, production of pyocyanin and secreted proteases. We have identified a Ca
2+
-regulated β-propeller putative phytase, CarP, which is required for Ca
2+
tolerance, regulation of the intracellular Ca
2+
levels, and plays a role in Ca
2+
regulation of
P. aeruginosa
virulence. Here, we studied the conservation of
carP
sequence and its occurrence in diverse phylogenetic groups of bacteria.
In silico
analysis revealed that
carP
and its two paralogues PA2017 and PA0319 are primarily present in
P. aeruginosa
and belong to the core genome of the species. We identified 155 single nucleotide alterations within
carP
, 42 of which lead to missense mutations with only three that affected the predicted 3D structure of the protein. PCR analyses with
carP
-specific primers detected
P. aeruginosa
specifically in 70 clinical and environmental samples. Sequence comparison demonstrated that
carP
is overall highly conserved in
P. aeruginosa
isolated from diverse environments. Such evolutionary preservation of
carP
illustrates its importance for
P. aeruginosa
adaptations to diverse environments and demonstrates its potential as a biomarker.
A rampant highly heterozygous aspen (Populus tremula L.) clone “Meshabash” has been revealed in course of population genetic diversity analysis in a native stand in the Republic of Tatarstan, Russia. ...Here we report the results of karyological analysis showing that this highly vigorous clone is diploid (2n=38) while typically triploid aspen demonstrates increased growth rate and resistance to aspen trunk rot caused by fungus Phellinus tremulae. By means of DNA identification of a series of model trees using 14 SSR loci we outlined the area occupied by this clone (at least 1.94 ha) and demonstrated that its ramets constitute 40 out of 48 genotyped trunks on the plot with the maximal distance between ramets 254 m. Since aspen is able to regenerate after cutting or die-off of maternal tree by root suckers at a distance up to 20–35 m this assumed that current stand appeared as a result of such spreading from an ortet tree during at least 5 generations. Trunk rot damage in the wood of model trees indicated low influence of this pathogen on viability and performance of the studied clone that can be associated with its extreme heterozygosity level (0.926) exceeding all the studied trees in this research plot and in three other control samples.
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