27 research outputs found
Physics of the Solid State V. 41, I. 04
No full textPhysics of the Solid State -- April 1999
Volume 41, Issue 4, pp. 501-678
METALS. SUPERCONDUCTORS
Internal friction and change in Young's modulus in the alloy Mg–Ni–Y due to a transition from an amorphous to a nanocrystalline state
N. P. Kobelev, I. G. Brodova, Ya. M. Soifer, and A. N. Manukhin
Full Text: PDF (103 kB)
Drift of scanning cycles of microwave absorption in high-Tc superconductors
M. I. Shirokov and A. V. Shendrik
Full Text: PDF (125 kB)
Effect of loading on the chemical potential of oxygen atoms in YBa2Cu3O6 + x (YBCO) and PrBa2Cu3O6 + x (PBCO)
Yu. M. Gerbshtein and N. E. Timoshchenko
Full Text: PDF (109 kB)
Josephson and non-Josephson generation — dynamic resistive state in superconducting films
V. F. Khirnyi
Full Text: PDF (111 kB)
Effect of normal electrons in superconductors on the current–voltage characteristic of a Josephson junction
V. P. Silin and A. V. Studenov
Full Text: PDF (135 kB)
Study of YBa2Cu3O7 – x films at various stages of their growth by medium-energy ion scattering
V. V. Afrosimov, R. N. Il'in, V. I. Sakharov, I. T. Serenkov, D. V. Yanovskii, S. F. Karmanenko, and A. A. Semenov
Full Text: PDF (431 kB)
Role of zinc and nickel impurities in high-temperature superconductors
S. G. Ovchinnikov
Full Text: PDF (116 kB)
SEMICONDUCTORS. DIELECTRICS
Metastable optical absorption of relaxed electronic excitations in BeO-Zn crystals
S. V. Gorbunov, K. V. Bautin, A. V. Kruzhalov, and V. Yu. Yakovlev
Full Text: PDF (101 kB)
Propagation of a heat pulse in a bounded conducting medium: thermoelectric detection
Alvaro F. Carballo-Sanchez, Yu. G. Gurevich, G. N. Logvinov, Yu. V. Drogobitskii, and O. Yu. Titov
Full Text: PDF (143 kB)
X-ray microanalysis of quaternary semiconductor solid solutions and its application to the (SnTe-SnSe):In system
V. A. Moshnikov, A. V. Moshnikov, A. I. Rumyantseva, S. A. Nemov, R. V. Parfen'ev, and A. V. Chernyaev
Full Text: PDF (115 kB)
A vibronic-structure analysis of optical spectra in ZnO:Ni3 + crystals by localized-vibration simulation
A. N. Kislov, V. G. Mazurenko, and A. N. Varaksin
Full Text: PDF (106 kB)
Primary acoustic echo during excitation of a paramagnetic crystal by picosecond elastic video pulses
V. Yu. Man'kov and S. V. Sazonov
Full Text: PDF (146 kB)
Investigation of the specific heat of bismuth tellurite in the temperature range 100–370 K
K. V. Domoratskii, L. Ya. Sadovskaya, V. M. Rizak, and V. A. Stefanovich
Full Text: PDF (79 kB)
Nonunidirectional two-beam interaction in photorefractive bismuth silicate in an alternating electric field
V. Yu. Krasnoperov, R. V. Litvinov, and S. M. Shandarov
Full Text: PDF (318 kB)
DEFECTS, DISLOCATIONS. PHYSICS OF STRENGTH
Superionic conductivity of the heterovalent solid solutions R1–xMxF3–x (R=REE, M=Ca, Ba) with tysonite-type structure
N. I. Sorokin, E. A. Krivandina, Z. I. Zhmurova, B. P. Sobolev, M. V. Fominykh, and V. V. Fistul'
Full Text: PDF (99 kB)
Characteristics of the elastic strain of a Ge(111) surface under a mechanical load
V. E. Korsukov, S. A. Knyazev, A. S. Luk'yanenko, and V. A. Obidov
Full Text: PDF (91 kB)
MAGNETISM AND FERROELECTRICITY
Latent paramagnetism in CsFeCl3
Yu. D. Zavorotnev
Full Text: PDF (56 kB)
Effect of conduction electrons on the law of approach to saturation of a metallic ferromagnet with surface pinning of the magnetic moment
Yu. I. Man'kov
Full Text: PDF (160 kB)
Effect of a magnetoelastic interaction on the rate of transient processes in iron borate single crystals
O. S. Kolotov
Full Text: PDF (61 kB)
Nonlinear Kerr effect in magnetic crystals
A. D. Petrenko
Full Text: PDF (93 kB)
Effect of noncrystallographic magnetic anisotropy on magnetization reversal in multilayer magnetic films
M. I. Kurkin and D. Z. Khusainov
Full Text: PDF (118 kB)
Inhomogeneous magnetostriction states in uniaxial ferromagnetic films
Yu. I. Bespyatykh and I. E. Dikshtein
Full Text: PDF (162 kB)
Magnetic structure of a RbDy(WO4)2 single crystal
V. P. D'yakonov, É. E. Zubov, A. A. Pavlyuk, M. T. Borowiec, and H. Szymczak
Full Text: PDF (100 kB)
Synthesis and magnetic properties of Cu3B2O6 single crystals
G. A. Petrakovskii, K. A. Sablina, A. M. Vorotynov, O. A. Bayukov, A. F. Bovina, G. V. Bondarenko, R. Szymczak, M. Baran, and H. Szymczak
Full Text: PDF (91 kB)
LATTICE DYNAMICS. PHASE TRANSITIONS
Nonequilibrium phase transition in quenched samples of Fe0.1TiTe2
A. N. Titov, T. B. Popova, and S. G. Titova
Full Text: PDF (80 kB)
Electronic structure and instability of Ni2MnGa
O. I. Velikokhatnyi and I. I. Naumov
Full Text: PDF (184 kB)
Study of Mn2+ EPR spectra in the incommensurate phase of Rb2ZnCl4
M. P. Trubitsyn
Full Text: PDF (92 kB)
Spontaneous graphitization and thermal disintegration of diamond at T > 2000 K
V. D. Andreev
Full Text: PDF (160 kB)
Photoinduced phase transition in Ag3AsS3 crystals
Yu. P. Gololobov
Full Text: PDF (71 kB)
LOW-DIMENSIONAL SYSTEMS AND SURFACE PHYSICS
Effect of dissipation on the properties of surface polaritons in GaAs/AlGaAs heterojunctions in a quantizing magnetic field
N. N. Beletskii and S. A. Borisenko
Full Text: PDF (145 kB)
Solitons in two- and three-dimensional crystals at Fermi resonance of optical modes
O. A. Dubovskii and A. V. Orlov
Full Text: PDF (114 kB)
Specific features in the temperature dependence of photoluminescence from CdTe/ZnTe size-quantized islands and ultrathin quantum wells
V. V. Zaitsev, V. S. Bagaev, and E. E. Onishchenko
Full Text: PDF (136 kB)
Strain-induced photoreflectance spectra in the vicinity of the E0 transition in GaAs/Si and InP/Si heterostructures
R. V. Kuz'menko, A. V. Ganzha, O. V. Bochurova, É. P. Domashevskaya, J. Schreiber, S. Hildebrandt, S. Mo, and E. Peiner
Full Text: PDF (110 kB)
Field-emission characteristics of layered systems in high electric fields
T. A. Tumareva
Full Text: PDF (97 kB)
Decay kinetics of the delayed annihilation fluorescence of aromatic molecules in Langmuir–Blodgett films
N. Kh. Ibraev and V. A. Latonin
Full Text: PDF (73 kB)
FULLERENES AND ATOMIC CLUSTERS
The structure of diamond nanoclusters
A. E. Aleksenskii, M. V. Baidakova, A. Ya. Vul', and V. I. Siklitskii
Full Text: PDF (160 kB)
Influence of crystal dimensions on interatomic distances in dispersed carbon
E. A. Belenkov and E. A. Karnaukhov
Full Text: PDF (78 kB)
Copper-oxygen substructures in carbon allotropes (graphite and fullerites)
V. F. Masterov, A. V. Prikhod'ko, T. R. Stepanova, A. A. Shaklanov, and O. I. Kon'kov
Full Text: PDF (71 kB)Archived web conten
Familial combined hyperlipidemia: current status of the problem (literature review)
No full textAmong the various dyslipidemia types, familial combined hyperlipidemia (FCH) is the most common genetic disorder, which is characterized by at least two different forms of lipid disorders: hypercholesterolemia and hypertriglyceridemia. In FCH, the risk of atherosclerotic cardiovascular diseases (CVDs), including at a young age, increases significantly. The aim was to analyze literature data on modern criteria for diagnosis, pathogenesis and data from molecular genetic studies of FCH. Future studies aimed at understanding the underlying genetic and metabolic mechanisms of FCH and developing effective treatment strategies should include larger cohort studies with greater genetic diversity, as well as investigation of epigenetic and lifestyle factors
Adaptive Resources of Subjects with Different Strategies for Choosing a Way of Life in a Stress Situation of Organizational Changes
No full textТимощенко Анастасия Сергеевна, аспирант кафедры психологии развития и возрастного консультирования, Южно-Уральский государственный университет (Челябинск), [email protected], ORCID 0000-0001-7033-8021
Грязева-Добшинская Вера Геннадьевна, доктор психологических наук, профессор, профессор кафедры психологии развития и возрастного консультирования, Южно-Уральский государственный университет (Челябинск), [email protected], ORCID 0000-0002-9986-4073
Дмитриева Юлия Александровна, старший научный сотрудник, лаборатория «Психология и психофизиология стрессоустойчивости и креативности» НОЦ «Биомедицинские технологии», Южно-Уральский государственный университет (Челябинск), [email protected], ORCID 0000-0002-0331-4684
A.S. Timoshchenko, [email protected], ORCID 0000-0001-7033-8021
V.G. Gryazeva-Dobshinskaya, [email protected], ORCID 0000-0002-9986-4073
Yu.A. Dmitrieva, [email protected], ORCID 0000-0002-0331-4684
South Ural State University, Chelyabinsk, Russian FederationОбоснование. Современные организации функционируют в динамичном мире и
адаптируются к различным проявлениям этой динамики, проводя организационные изменения. Исследование специфических адаптационных ресурсов отдельных групп субъектов выявило возможности дифференцированного подхода в работе с персоналом в условиях организационных изменений. Обоснована дифференциация выборки по типам выбора субъектами жизненного пути. Цель. Исследовать специфику адаптационных ресурсов субъектов в условиях организационных изменений, имеющих разный тип выбора жизненного пути и особенности переживания стресса, жизнестойкости, толерантности к неопределенности. Материалы и методы исследования. В исследовании приняли участие 208
работников крупного промышленного предприятия г. Челябинска (из них 135 женщин
и 73 мужчины). Применялась батарея следующих методик: методика «Типология личностного выбора жизненного пути» В.Г. Грязевой-Добшинской, А.С. Мальцевой; «Шкала психологического стресса» Л. Лемура, Р. Тесье, Л. Филлиона (в адаптации Н.Е. Водопьяновой); «Тест жизнестойкости» С. Мадди (в адаптации Д.А. Леонтьева, Е.В. Рассказовой); «Шкала толерантности к неопределенности» Д. МакЛейна в адаптации Е.Г. Луковицкой. Для статистической обработки использовался дискриминантный и факторный анализ данных. Результаты. Выявлены общие (неспицифические) адаптационные ресурсы: у субъектов всех типов выбора жизненного пути выявлена обратная зависимость параметров подверженности стрессу и жизнестойкости как ресурсов стрессоустойчивости. Выявлены
специфические адаптационные ресурсы: у субъектов с гедонистическим типом – положительное отношение к новым, разнообразным ситуациям в жизни, предпочтение неопределенности; у субъектов с ценностным типом выбора – произвольный уровень отношения к неопределенным и сложным ситуациям; у субъектов с творческим типом – комплекс свойств, включающих «принятие риска» и всех компонентов «толерантности к неопределенности». Background. The modern world is characterized by instability, uncertainty, complexity and ambiguity. Therefore, a successful development of an organization requires organizational changes, which provoke the necessity of adaptation for people working in this organization. The study
of specific adaptive resources revealed the benefits of a differentiated approach to personnel undergoing organizational changes. The differentiation of the sample depending on the strategies for choosing a way of life is justified. Aim. The paper aims to study the specifics of adaptive resources in the context of organizational changes and the features of experiencing stress, tolerance to uncertainty and resilience. Materials and methods. The study involved 208 employees of a large industrial enterprise in Chelyabinsk (of which 135 females and 73 males). The following methods were used during the study: typology for a personal choice of a way of life by V. Gryazeva-Dobshinskaya, A.S. Maltseva; the Psychological Stress Measure (PSM) by L. Lemyrr,R. Tessier, L. Fillion (adapted by N.E. Vodopyanova); the Hardiness test by S. Maddi (adapted by D. A. Leontiev, E. V. Rasskazova); the tolerance to uncertainty scale adapted by E.G. Lukovitskaya.
For statistical processing, discriminant and factor analysis were used. Results. General
(nonspecific) adaptive resources were revealed: in all subjects regardless of their strategies for choosing a way of life, an inverse correlation was found between stress exposure and resilience as stress resistance resources. Specific adaptive resources were identified: subjects of a hedonistic type had a positive attitude towards new, diverse situations in life and were characterized by a preference for uncertainty; subjects of a value-oriented type were characterized by an arbitrary level of attitude to uncertain and complex situations; creative subjects demonstrated a set of properties, including “challenge” and all the components of “uncertainty tolerance”
Формализм вектора Блоха в задаче о нелинейном резонансном отклике квазидвумерного суперкристалла
No full textTaking into account the ideas of the generalized two-level scheme, within the framework of the semiclassical approach to the consideration of the resonant interaction of the light field with matter, an analytical solution to the problem of the evolution of superradiance in a quasi-two-dimensional supercrystal formed by quantum dots is obtained. The calculation was carried out for the physical parameters of a semiconductor structure with quantum-well effects in the presence of resonant nonlinearity and intraband relaxation.С учетом представлений обобщенной двухуровневой схемы в рамках полуклассического подхода к рассмотрению резонансного взаимодействия светового поля с веществом получено аналитическое решение задачи об эволюции сверхизлучения в квазидвумерном суперкристалле, образованном квантовыми точками. Расчет проведен для физических параметров полупроводниковой структуры с квантоворазмерными эффектами при наличии резонансной нелинейности и внутризонной релаксации
Searching for new genes associated with the familial hypercholesterolemia phenotype using whole-genome sequencing and machine learning
No full textOne of the most common congenital metabolic disorders is familial hypercholesterolemia. Familial hyper-cholesterolemia is a condition caused by a type of genetic defect leading to a decreased rate of removal of low-density lipoproteins from the bloodstream and a pronounced increase in the blood level of total cholesterol. This disease leads to the early development of cardiovascular diseases of atherosclerotic etiology. Familial hypercholesterolemia is a monogenic disease that is predominantly autosomal dominant. Rare pathogenic variants in the LDLR gene are present in 75–85 % of cases with an identified molecular genetic cause of the disease, and variants in other genes (APOB, PCSK9, LDLRAP1, ABCG5, ABCG8, and others) occur at a frequency of < 5 % in this group of patients. A negative result of genetic screening for pathogenic variants in genes of the low-density lipoprotein receptor and its ligands does not rule out a diagnosis of familial hypercholesterolemia. In 20–40 % of cases, molecular genetic testing fails to detect changes in the above genes. The aim of this work was to search for new genes associated with the familial hypercholesterolemia phenotype by modern high-tech methods of sequencing and machine learning. On the basis of a group of patients with familial hypercholesterolemia (enrolled according to the Dutch Lipid Clinic Network Criteria and including cases confirmed by molecular genetic analysis), decision trees were constructed, which made it possible to identify cases in the study population that require additional molecular genetic analysis. Five probands were identified as having the severest familial hypercholesterolemia without pathogenic variants in the studied genes and were analyzed by whole-genome sequencing on the HiSeq 1500 platform (Illumina). The whole-genome sequencing revealed rare variants in three out of five analyzed patients: a heterozygous variant (rs760657350) located in a splicing acceptor site in the PLD1 gene (c.2430-1G>A), a previously undescribed single-nucleotide deletion in the SIDT1 gene [c.2426del (p.Leu809CysfsTer2)], new missense variant c.10313C>G (p.Pro3438Arg) in the LRP1B gene, and single-nucleotide deletion variant rs753876598 [c.165del (p.Ser56AlafsTer11)] in the CETP gene. All these variants were found for the first time in patients with a clinical diagnosis of familial hypercholesterolemia. Variants were identified that may influence the formation of the familial hypercholesterolemia phenotype
Heart failure with preserved and slightly impaired ejection fraction and cardiovascular events: Pathogenetic interrelations as a part of the cardiovascular continuum
No full textSafety and efficacy of long-term treatment with different ASA forms in patients with stable IHD and a high risk for development of gastropathy by data from a cross-sectionals study
No full textLong-term uroseptic and metabolic effects of a herbal medicinal preparation in women with type 2 diabetes taken gliflosins
No full textBackground. The problem of urinary tract infections, including recurrent cystitis, and the choice of effective and safe means of treatment and prevention, taking into account the increasing burden of antibiotic resistance, are extremely relevant.
Aim. To evaluate the effectiveness and safety of the herbal medicine Canephron® N for the prevention of exacerbations of recurrent cystitis and its effect on metabolic parameters in patients with type 2 diabetes mellitus taking sodium glucose cotransporter type 2 inhibitors.
Material and methods. A prospective, randomized, open-label, parallel group study of 60 women without exacerbation of recurrent cystitis. The main group took the drug Canephron® N for 3 months, 2 tablets 3 times a day, and for the next 3 months they were monitored without taking the drug. The main evaluation parameters were: frequency of cystitis relapses, albumin/creatinine ratio in the morning urine, glomerular filtration rate, plasma lipid profile, glycemia and malondialdehyde in low-density lipoproteins.
Results. 3 months after the end of taking the drug Canephron® N, patients in the main group maintained a positive effect in reducing exacerbations of cystitis – 3.3 times less relapses of the disease (3 and 10%, respectively; p=0.038). The urine albumin/creatinine ratio, lipid profile, glycemia and malondialdehyde in low-density lipoproteins after a 3-month treatment period had positive dynamics, but in the long-term period they corresponded to the values at the inclusion stage, both in the main and control groups.
Conclusion. Prophylactic use of the herbal drug Canephron® N for 3 months is safe and reduces the frequency of relapses of cystitis in women with chronic cystitis against the background of diabetes mellitus taking sodium glucose cotransporter type 2 inhibitors, this effect persists for 3 months after discontinuation of the drug. Positive metabolic effects are associated with taking Canephron® N and are gradually leveled out when it is discontinued
Prognosis of patients with coronary artery disease and diabetes — what to look for
No full textPatients with coronary artery disease (CAD) and diabetes are identified as a high cardiovascular risk group both in Russia and abroad. Having similar paths of development and progression of atherosclerosis and atherothrombosis, these diseases potentiate each other's thrombogenesis mechanisms. As a result, cardiovascular ischemic events occur, making a significant contribution to the mortality rates of this group of patients. Influencing the risk of thrombus formation is one of the key links on the way to improving the prognosis of patients with CAD and diabetes. Modern antithrombotic therapy, including not only the antiplatelet agent aspirin, but also the anticoagulant rivaroxaban at a dose of 2,5 mg, allows for the maximum impact on the development of atherothrombosis, thereby reducing the risks of cardiovascular events and all-cause death. The aim of the review was to analyze the potential of reducing the all-cause death risk by prescribing the main drug groups that are part of the therapy of patients with CAD and diabetes
Photoacoustic effect in micro- and nanostructures: numerical simulations of Lagrange equations
No full textThe work provides the description of theoretical and numerical modeling techniques of thermomechanical effects that take place in absorbing micro- and nanostructures of different materials under the action of pulsed laser radiation. A proposed technique of the numerical simulation is based on the solution of equations of motion of continuous media in the form of Lagrange for spatially inhomogeneous media. This model allows calculating fields of temperature, pressure, density, and velocity of the medium depending on the parameters of laser pulses and the characteristics of micro- and nanostructures.The work provides the description of theoretical and numerical modeling techniques of thermomechanical effects that take place in absorbing micro- and nanostructures of different materials under the action of pulsed laser radiation. A proposed technique of the numerical simulation is based on the solution of equations of motion of continuous media in the form of Lagrange for spatially inhomogeneous media. This model allows calculating fields of temperature, pressure, density, and velocity of the medium depending on the parameters of laser pulses and the characteristics of micro- and nanostructures
