892 research outputs found
Symmetry adapted ro-vibrational basis functions for variational nuclear motion calculations: TROVE approach
We present a general, numerically motivated approach to the construction of
symmetry adapted basis functions for solving ro-vibrational Schr\"{o}dinger
equations. The approach is based on the property of the Hamiltonian operator to
commute with the complete set of symmetry operators and hence to reflect the
symmetry of the system. The symmetry adapted ro-vibrational basis set is
constructed numerically by solving a set of reduced vibrational eigenvalue
problems. In order to assign the irreducible representations associated with
these eigenfunctions, their symmetry properties are probed on a grid of
molecular geometries with the corresponding symmetry operations. The
transformation matrices are re-constructed by solving over-determined systems
of linear equations related to the transformation properties of the
corresponding wavefunctions on the grid. Our method is implemented in the
variational approach TROVE and has been successfully applied to a number of
problems covering the most important molecular symmetry groups. Several
examples are used to illustrate the procedure, which can be easily applied to
different types of coordinates, basis sets, and molecular systems
Influence of thiamine injections on the folic acid balance in white rats organism
The interaction of thiamine and folic acid in the organism of white rats were carried out under intramuscular injections of thiamine. The research was conducted on 120 white Wistar rats weighing 150-200 g, which were divided into two groups, one was injected with thiamine, and the second was a control group. All animals were obtained the standard ration of the vivarium.After intramuscular injections of thiamine in dose 1 mg/kg mass it was established, that folic acid content after 60-240 min after injection decrease in small intestine and muscles of animals. Meanwhile, this indication in liver and blood increased.These data achieve that thiamine injection leads to changes of folic acid content in different tissue
Influence of thiamine injections on the folic acid balance in white rats organism
The interaction of thiamine and folic acid in the organism of white rats were carried out under intramuscular injections of thiamine. The research was conducted on 120 white Wistar rats weighing 150-200 g, which were divided into two groups, one was injected with thiamine, and the second was a control group. All animals were obtained the standard ration of the vivarium.After intramuscular injections of thiamine in dose 1 mg/kg mass it was established, that folic acid content after 60-240 min after injection decrease in small intestine and muscles of animals. Meanwhile, this indication in liver and blood increased.These data achieve that thiamine injection leads to changes of folic acid content in different tissue
Influence of palm oil enriched diet on the morphofunctional condition of rats mandibular condylar cartilage
The aim of the study was to establish the morpho-functional condition of mandibular condylar cartilage in white rats of different ages under conditions of excessive use of palm oil and to assess the possibility of correcting the identified changes using the Garcinia Cambogia extrac
Role and responsibilities of a teacher in the lifelong learning sector
Teaching is quite challenging and demanding alongside with many other careers. The main role of every teacher is to involve and engage your students in learning activities. An appropriate level of language, appropriate terms understandable to your students will motivate them to learn mor
Preclinical Evaluation of Antitumor Efficacy of a New Radiopharmaceutical Based on Thermoresponsive Carrier and Samarium-153
This work is devoted to studying the in vivo antitumor efficacy of the new injection radiopharmaceutical based on thermoresponsive polymer and β−-emitting radionuclide samarium-153 (153Sm-KARP-CheM). The study of in vivo antitumor efficacy was performed using mice F1 and C57Bl/6 with transplanted subcutaneously sarcoma S37 and melanoma B16, respectively. The animals received single intratumoral bolus injections of 37 MBq (1 mCi), or 18.5 MBq (0.5 mCi) of 153Sm-KARP-CheM, or saline in a volume 0.1 ml. The efficacy of antitumortreatment was evaluated using tumor growth inhibition index (TGI, %) and increase of average life span (ILS, %). The most meaningful therapeutic efficacy after intratumoral injection of 153Sm-KARPCheM was observed in melanoma-bearing mice C57Bl/6. The highest values of TGI for melanoma B16 were 79.5% and 79.6% after treatment with 18.5 MBq or 37 MBq, respectively. An increase of average life span by 17.1% was found in group of melanoma-bearing mice treated with 37 MBq of 153Sm-KARP-CheM only. Tumor growth inhibition of sarcoma S37 was slightly lower as compared with melanoma B16: 62.5% and 59.0% in 37 MBq and 18.5 MBq groups, respectively. 153Sm-KARP-CheM didn’t increase average life span of treated animals. In conclusion, 153Sm-KARP-CheM seems to be effective radiopharmaceutical for local tumor radiotherapy.
Keywords: thermoresponsive polymer, samarium-153, radionuclide therapy of cancer, sarcoma S37, melanoma B16, antitumor efficacy
Quantum correlations and distinguishability of quantum states
A survey of various concepts in quantum information is given, with a main
emphasis on the distinguishability of quantum states and quantum correlations.
Covered topics include generalized and least square measurements, state
discrimination, quantum relative entropies, the Bures distance on the set of
quantum states, the quantum Fisher information, the quantum Chernoff bound,
bipartite entanglement, the quantum discord, and geometrical measures of
quantum correlations. The article is intended both for physicists interested
not only by collections of results but also by the mathematical methods
justifying them, and for mathematicians looking for an up-to-date introductory
course on these subjects, which are mainly developed in the physics literature.Comment: Review article, 103 pages, to appear in J. Math. Phys. 55 (special
issue: non-equilibrium statistical mechanics, 2014
Volume of the quantum mechanical state space
The volume of the quantum mechanical state space over -dimensional real,
complex and quaternionic Hilbert-spaces with respect to the canonical Euclidean
measure is computed, and explicit formulas are presented for the expected value
of the determinant in the general setting too. The case when the state space is
endowed with a monotone metric or a pull-back metric is considered too, we give
formulas to compute the volume of the state space with respect to the given
Riemannian metric. We present the volume of the space of qubits with respect to
various monotone metrics. It turns out that the volume of the space of qubits
can be infinite too. We characterize those monotone metrics which generates
infinite volume.Comment: 17 page
Colossal variations in the thermopower and n-p conductivity switching in topological tellurides under pressure
Under applied high pressure, the electronic, optical, structural, and other properties of narrow-bandgap telluride semiconductors are subjected to dramatic changes. They can include, for instance, structural and electronic topological transitions. In this work, we investigated the electronic properties of single crystals of three families of tellurides, namely, HgTe, PbTe, and Bi2Te3 by measurements of the thermoelectric power (the Seebeck coefficient) and electrical resistance under high pressure up to 10 GPa. The applied pressure led to spectacular variations in the electronic transport of all three tellurides. We addressed these effects to electronic topological transitions that could be driven by significant narrowing of the bandgaps in the normal-pressure phases of these compounds. In particular, at about 1 GPa, we observed an n-p switching in the conductivity of HgTe, which was well reproducible under multiple pressure cycling. In contrast, in PbTe, we found that an electronic topological transition irreversibly turns the conductivity from p- to n-type. An electronic topological Lifshitz transition in p-type Bi2Te3 crystals with a low carrier concentration enhanced the n-type conductivity in a narrow pressure region about 2-3 GPa and resulted in a double p-n-p conductivity inversion. An irreversible p-n conductivity switching in p-type Bi2Te3 happened already on decompression from a high-pressure phase from about 8 GPa. The stress-controlled p-n inversions of the electrical conductivity in these industrially important telluride materials can potentially find emergent applications in micro- and nanoelectronics. © 2020 Author(s).The research was supported by a grant of Ministry of Science and Higher Education of the Russian Federation No. 075-15-2020-797 (13.1902.21.0024)
Tickborne Pathogen Detection, Western Siberia, Russia
Ixodes and Dermacentor ticks harbor Borrelia, Anaplasma/Ehrlichia, Bartonella, and Babesia species
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