Spin–orbit interaction in the HD+ ion Korobov, Vladimir I.; Karr, Jean-Philippe
The European physical journal. D, Atomic, molecular, and optical physics,
10/2022, Volume:
76, Issue:
10
Journal Article
Peer reviewed
Open access
We report on progress in calculation of the spin–orbit interaction for the HD
+
molecular ion. This interaction is currently the largest source of theoretical uncertainty in determination of the ...hyperfine structure of ro-vibrational transition lines. The corrections of order
m
α
7
ln
(
α
)
are derived and numerically calculated. Theoretical hyperfine intervals are compared with experimental data, and the observed discrepancies are discussed.
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DOBA, EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, IZUM, KILJ, KISLJ, MFDPS, NLZOH, NUK, OILJ, PILJ, PNG, SAZU, SBCE, SBJE, SBMB, SBNM, SIK, UILJ, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
The spin probe technique was used to study graphite oxide (GO) powders swelled in polar liquids (CH3CN, CH3OH, and H2O) and liquid-free GO membranes (GOM). The nitroxide radicals TEMPO ...(2,2,6,6-tetramethylpiperidine-N-oxyl) and TEMPOL (4-hydroxy-2,2,6,6-tetramethylpiperidine-N-oxyl) readily penetrated into the interplane space of GO from the solution. Electron paramagnetic resonance (EPR) spectra of these radical probes were sensitive to molecular mobility and orientation ordering within the internal space of GO. The radicals embedded in swelled GO were in two states with different rotational mobilities. The small fraction of radicals located in the interplane space of GO and detected in the broad range of temperatures was in the state of fast rotation, similar to the same radicals dissolved in bulk liquids, thus providing experimental evidence of formation of a liquid-like media within the interplane space of GO. Such mobile media may be responsible for the unusual permeation properties of GOM, which is reported in the literature. Second, less-mobile fraction of radicals was found to be immobilized at the internal surface of GO and was sensitive to phase transformations in the swelled GO structures. The transformations were detected as anomalies at temperature dependences of rotational mobility of radicals. The detected dependence of EPR spectra of probe radicals on orientation of GOM, relative to the direction of magnetic field in the EPR spectrometer, was used for quantitative characterization of orientation alignment of GO planes within the membranes. Such an approach may serve as an elegant method to estimate the relative quality of membranes and other GO-layered structures.
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IJS, KILJ, NUK, PNG, UL, UM
This is an introduction to the special section “Discourse Analysis.” Taken together, the articles in this special section exemplify a rigorously systematic window into applied and interventional ...discourse analytic work and, thus, sound a clarion call to the qualitative field to increasingly find ways to balance careful detail with real-world relevance. Discourse analysis (DA) has increasingly become a diversified yet disciplined method that is offers a demonstrably meticulous method for interrogating multiple levels of interaction, from the microinterpersonal to the cultural or historical. As is clear from the articles, DA is equipped to tackle real world applied institutional issues, some of which involve novel and exciting interventional solutions that are grounded in the lived practical exigencies of the participants for whom they matter. It is exactly at this level of hybridization, collapsing ecologically grounded rigor with creative application, where DA stands as a vanguard in the burgeoning qualitative landscape. (PsycInfo Database Record (c) 2020 APA, all rights reserved)
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CEKLJ, FFLJ, NUK, ODKLJ, PEFLJ, UPUK
We reconsider the calculation of rovibrational transition frequencies in hydrogen molecular ions. Some previously neglected contributions, such as the deuteron polarizability, are included into ...consideration in comparison with our previous work. In particular, one-loop and two-loop QED corrections at mα 7 and mα 8 orders are recalculated in the framework of the adiabatic approximation, with systematic inclusion of corrections associated with vibrational motion. Improved theoretical transitions frequencies are obtained and found to be in very good agreement with recent highprecision spectroscopy experiments in HD +. New values for the mp/me and m d /mp mass ratios are determined.
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CMK, CTK, FMFMET, IJS, NUK, PNG, UM
Abhidharma as a Strategy of Cognition Korobov, Vladimir B.
Vestnik Rossiĭskogo universiteta druzhby narodov. Serii͡a︡ Filosofii͡a,
03/2024, Volume:
28, Issue:
1
Journal Article
Peer reviewed
Open access
The doctrine of the “absence of the self” ( anātman ), which is the basis of the ontology of Buddhist schools of all possible orientations, in its application to practical activity implies the ...existence of such an organizing structure of cognition, which in its essence differs both from the orthodox systems of Indian thought ( āstika ) and from the correlationist ideas of modern transcendental epistemology. The research presents the abhidharma as a genre of Buddhist literature and a discipline of Buddhist system of knowledge (Abhidharma) serves as a cognitive model producing such an image of the world from which the problem of “Self” ( ātman ) is eliminated. Such “elimination” does not mean the destruction of the “I” (ego, personality) at all, but proposes to consider it as an “assemblage”, a composition or autonomous wholeness composed of heterogeneous elements of different natures, each of which in turn is an “assemblage”, the relations between and within the individual “assemblages” being external relations. At the center of the research is the question: is it possible (or how is it possible) to have a strategy of cognition that would not assume as its basis the dichotomy “cognizing subject - cognizable world”, but would have as its goal the transcendence of phenomenal existence. It is argued that Abhidharma/abhidharma is a description of elements shaping the structure of which could be regarded just as such a cognitive strategy. The paper is based on the author’s experience of translating Asaṅga’s Abhidharmasamuccaya (4th century) and a large commentary on it, the Abhidharmasamuccayavyākhyā , attributed to Sthiramāti (6th century)
The linear time-optimal problem for some classes of linear systems with a multidimensional control is considered. The general position condition, which guarantees the uniqueness of the optimal ...control, is not assumed to be satisfied. We introduce a vector moment min-problem, which is a further development of the moment min-problem proposed by V.I. Korobov and G.M. Sklyar in 1987 for solving linear time-optimal problems with a one-dimensional control. In the paper the case of the time-optimal problem for linear systems with two-dimensional control is thoroughly studied by use of the vector moment min-problem.
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EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, KILJ, KISLJ, MFDPS, NLZOH, NUK, OBVAL, OILJ, PNG, SAZU, SBCE, SBJE, SBMB, SBNM, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
The article reveals the impact of digitalization of the economy on the behaviour of consumers of financial services: increasing the relevance of financial needs, increasing the consumer independence, ...changing the model of consumer behaviour. The directions for improving the marketing activities of banks were identified: a shift in focus from image advertising to product advertising, and increased attention on quality characteristics of financial products.
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•Rapid ultrasound-probe preparation of aqueous fullerene dispersions (AFDs).•Sonication probe is more effective for AFD preparation than a bath.•AFDs have up to 80 ppm concentrations, ...180 nm mean diameter, –32 mV ζ-potential.•AFDs of C60, C70, Gd@C82, etc. showed long-term storage and aggregate stability.•Complete characterization and metal/organic impurities control of AFDs is proposed.
A green, scalable, and sustainable approach to prepare aqueous fullerene dispersions (AFD) C60, C70, endohedral metallofullerene Gd@C82, and their derivatives C60Cl6, C70Cl10, and supramolecular and ester-like derivatives, 10 fullerene species total, is proposed. For the first time, an immersed ultrasonic probe was used to preparing dispersions for pristine fullerenes without addends. Both ultrasound-assisted solvent-exchange and direct sonication techniques for AFD preparation using an immersed probe were tested. The average time for AFD preparation decreases 10–15 times compared to an ultrasound-bath-assisted technique, while final fullerene concentrations in AFDs remained at tens of ppm (up to 80 ppm). The aqueous dispersions showed long-term stability, a negatively charged surface with a zeta potential up to –32 mV with an average nanocluster diameter of no more than 180 nm. The total anionic and cationic compositions of samples were found by inductively coupled plasma atomic emission spectroscopy and chromatographic techniques. The highlights and challenges of using an ultrasound probe for AFD production are discussed.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
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