bluuebunny/crossref_metadata_2025 huggingface dataset:
Study of heavily doped n-3C-SiC epitaxial films grown on 6H-SiC semi-insulating substraes by sublimation method
Authors: Lebedev A.A.  , Davydov V.Yu.  , Eliseev I.A.  , Lebedev S.P.  , Nikitina I.P.  , Oganesyan G.A.  , Smirnov A.N.  , Shakhov L.V
Published: September 2022

Heavily doped 3C-SiC films based on semi-insulating 6H-SiC substrates were obtained by sublimation epitaxy. The structural perfection of the obtained samples was monitored by X-ray diffractometry. The measurements of the photoluminescence and Hall effect spectra have confirmed the rather high perfection of the obtained epitaxial layers. Keywords: SiC, heteroepitaxy, cubic silicon carbide, X-ray diffractometry, Hall effect, photoluminescence.
High-temperature diffusion of the acceptor impurity Be in AlN
Authors: O.P. Kazarova  , S.S. Nagalyuk  , V.A. Soltamov  , M.V. Muzafarova  , E.N.Mokhov
Published: September 2022

The high-temperature diffusion of an acceptor impurity of beryllium (Be) into bulk single-crystal aluminum nitride (AlN) has been studied. It is shown that the introduction of Be leads to the appearance of green luminescence of AlN, which is stable at room temperature and is observed over the entire thickness of the sample. It was shown by the method of luminescence analysis that the Be diffusion process is most efficiently realized in the temperature range from 1800 to 2100oC and is characterized by extremely high diffusion coefficients D=10-7 cm2/s and 10-6 cm2/s, respectively. It is shown that a prolonged diffusion process (t≤1 hour) at a temperature of 2100oC leads to concentration quenching of the luminescence of near-surface AlN layers with a thickness of ~80 μm, which makes it possible to estimate the concentration of beryllium impurities in the near-surface layer on the order of ~1019 cm-3. Keywords: AlN PVT doping diffusion.
9744
Authors: Garibova S.N.  , Isaev A.I.  , Mekhtieva S.I.  , Ataeva S.U.  , Alekberov R.I.
Published: September 2022

Specifics of "amorphous state - crystal" phase transitions in dependence on the samples obtaining method and thermal processing, as well as changes in the structure and close range order in the arrangement of the atoms of Ge20Sb20.5Te51 chalcogenide semiconductors have been studied by the x-ray diffraction and Raman spectroscopy. It has been shown that Ge20Sb20.5Te51 films obtained by thermal evaporation on an unheated substrate are amorphous; after heat treatment at 220 and 400 °C, transform into a crystalline phase with a cubic and hexagonal structure. The chemical bonds and the main structural elements that form the matrix of the investigated objects, as well as the changes that occur in them during heat treatment, have been determined.
Phase formation and crystallization kinetics of CuIn-=SUB=-5-=/SUB=-S-=SUB=-8-=/SUB=- amorphous films
Authors: Dashdamirova G. E.  , Asgerov E. B.  , Ismailov D. I.
Published: September 2022

The processes of interaction and formation of phases in the Cu2S-In2S3 system obtained by sequential and simultaneous deposition of Cu2S and In2S3 binary compounds in vacuum have been investigated. Using the kinematic electron diffraction method, the kinetic crystallization parameters of CuIn5S8 amorphous films formed as a result of vacuum condensation of the above binary compounds, both under normal conditions and under the influence of an external electric field, have been established. Keywords: kinematic electron diffraction, nanosized films, condensation plane.
9742
Authors: Ageeva N. N.  , Bronevoi I. L.  , Zabegaev D. N.  , Krivonosov A. N.
Published: September 2022

During high-power optical picosecond pumping of the
GaAs layer of the Alx Ga1−x As−GaAs−Alx Ga1−x As heterostruc-
ture, stimulated picosecond emission arises in it. It has been
experimentally revealed how, upon saturation of the emission gain,
the maximum energy density of its spectral component and the
time to reach this density depend on the photon energy, on the
parameters of the amplification and relaxation of the component.
It follows from these dependences that the indicated density and
time are influenced by the slowing down of the transport of
nonequilibrium carriers in the energy space. The slowdown is
caused by the interaction of carriers with emission. It has been
found that as the diameter of the active region approaches zero,
the measured characteristic relaxation time of the component tends
to the theoretical universal residual relaxation time prolonged due
to the indicated transport slowdown.
Optical properties of silicon nanopillars with a built-in vertical p-n-junction
Authors: Basalaeva L. S.  , Tsarev A. V.  , Anikin K. V.  , Veber S. L.  , Kryzhanovskaya N. V.  , Nastaushev Yu. V.
Published: September 2022

Resonance reflection of light from the ordered arrays of silicon nanopillars (Si NP) was investigated. The height of Si NP was 450 nm. The effect of Si NP oxidation in concentrated nitric acid on the position of resonances in reflection spectra was studied. A weak influence of the additional polymeric coating on the characteristics of reflection from the structures was proven. It is established on the basis of the results of experimental investigation and direct numerical modeling by means of three-dimensional finite difference time domain algorithm (3D FDTD) that the dependence of the resonant wavelength for Si NP on the diameter of Si NP is a linear function with nonzero displacement depending on the pitch. Keywords: silicon nanopillars, structural colors, all-dielectric nanophotonics.
Influence of growth conditions from metalorganic compounds on the preparation of n-CdTe epitaxial layers using isopropyl iodide
Authors: Moiseev A. N.  , Evstigneev V. S.  , Chilyasov A. V.  , Kostunin M. V.
Published: September 2022

The dependence of iodine incorporation in CdTe layers on the deposition conditions during metalorganic vapor phase epitaxy is investigated. The growth of the layers was carried out from dimethylcadmium and diethyltellurium in the hydrogen flow in a vertical reactor with a hot wall condition at a total pressure of 20 kPa. The total iodine concentration was determined by secondary ion mass spectrometry, the electrically active concentration was determined from the Hall effect measurement. The iodine incorporation depends on the crystallographic orientation of the substrate (were studied (100), (310), (111)A, (111)B, (211)A and (211)B), the concentration of the doping precursor (flux range 5·10-8-3·10-6 mol/min), the mole ratio of organometallic compounds (DMCd/DETe = 0.25-4), growth temperature (335-390oC) and the walls of the reactor above the pedestal (hot wall zone 290-320oC). The total iodine concentration reached 5·1018 cm-3 and the activation efficiency was ~4%. After thermal annealing in cadmium vapor at 500oC the activation efficiency was ~100%. Keywords: epitaxial layers, metalorganic vapour phase epitaxy, CdTe, iodine doping, isopropyl iodide, thermal annealing.
Generation of surface liquid flow in channels by capillary vibrations and waves
Authors: Aleksandrov V. A.
Published: September 2022

The generation of a directed flow on the water surface in channels with sources and resonators of capillary oscillations is detected and investigated. The surface flow is caused by the movement of the liquid through the gaps between the resonators, as well as between the resonator and the channel walls, under a curved surface that is locally deformed by the sources of capillary vibrations, the transfer of energy of the locally curved surface of the liquid by capillary waves, and the transmission of wave momentum to the particles of the liquid surface in one direction. It is shown that capillary waves together with the energy transfer an excess surface, the flux density of which is equal to the flux of the surface deformation. Moving devices with a capillary-wave accelerator of the surface liquid flow are demonstrated. Keywords: capillary oscillations and waves, surface liquid flow, channel, flux of surface deformation.
On the vacancy nature of the high-temperature background of internal friction in solids
Authors: S.A. Gridnev  , Y.E. Kalinin
Published: September 2022

High-temperature internal friction in an amorphous CuTi alloy is investigated. Exponential regions with different activation energies are observed on the dependence of internal friction on temperature on both sides of the glass transition temperature. An exponential increase in the background of internal friction with temperature in both sites is associated with the migration of vacancy-like defects in the amorphous structure under the influence of mechanical stresses, while frozen defects of constant concentration migrate to the glass transition temperature. After the transition to a state of thermodynamic equilibrium, the concentration the number of migrating defects increases exponentially. Based on the experimental results of measuring the high-temperature background, estimates of the activation energy of migration and the formation of vacancies of similar defects in the amorphous structure of the alloy under study are made. Keywords: Internal friction, relaxation time, high temperature background, amorphous alloy.
Impact fracture of crystalline, Ar-=SUP=-+-=/SUP=--amorphized, and amorphous silicon carbide
Authors: I.P. Shcherbakov  , A.E. Chmel
Published: September 2022

The mechanical fracture of silicon dioxide initiates the mechanoluminescence (ML) lighting due to multiple breakage of interatomic bonds with producing non-bridged oxygen groups of [=Si-O-]. The detected ML signals consisted of series of pulses, the energy of which is proportional to the number of photons irradiated from the broken bonds. The comparative analysis of the energy distributions in ML series induced by the impact damage of the surface of crystalline and vitreous SiO2 before and after the Ar+-ion implantation was conducted. The interplay between random and correlated accumulation of broken bonds under the impact loading was found and discussed. Keywords: silicon dioxide, Ar+-implantation, impact damage, mechanoluminecsence.
Degradation of InGaN/GaN quantum well UV LEDs caused by short-term exposure to current
Authors: Ivanov A. M.  , Klochkov A. V.
Published: September 2022

A comparative analysis of the initial stages of degradation of ultraviolet and blue LED structures with InGaN/GaN quantum wells is carried out. In the mode of accelerated aging, the structures were subjected to short-term, sequential exposure to currents of 80-190 mA at forward bias. The exposure time did not exceed three hours. There was an increase (up to 20%) in the external quantum efficiency. The most probable physical mechanisms explaining the changes in InGaN/GaN LEDs are presented and possible ways to slow down the aging of UV LEDs are outlined. Keywords: Degradation of ultraviolet light-emitting diodes, increase in quantum efficiency, slowing down the aging.
Surface Compound Formation in Be Adsorption on W(100): absolute concentration and properties
Authors: Rut'kov E. V.  , Afanas'eva E. Y.  , Gall N. R.
Published: September 2022

Be adsorption at T =900-1100 K results in formation of a stable adsorption state; it drops the activation energy of atomic Be dissolution in the substrate bulk, and all newly deposited Be dissolves in the substrate. The absolute concentration of atomic Be in this state has been measured by Auger electron spectroscopy using specially designed ultra high vacuum getter Be source. The concentration is (1.0 ±0.1)·1015 sm-2 and corresponds to WBe stoichiometry relative to W surface concentration. The layer is destroyed at T>1100 K, the atomic Be dissolves in the bulk with the activation energy ~ 3.5 eV. Keywords: adsorption, surface, beryllium, tungsten, solid solution.
Relativistic backward-wave oscillator with longitudinal-slotted diffraction output
Authors: Kladukhin V.V.  , Khramtsov S.P.  , Yalov V.Yu.
Published: September 2022

The results of experimental studies evaluating the influence of longitudinal slits in a conical diffraction outlet, combined with an electron collector, of a 10 GHz relativistic BWO (Backward-Wave Oscillator) with an operating mode TM01 are presented. It has been shown experimentally that replacing a solid conical waveguide with a similar longitudinal-slotted waveguide has little effect on the performance of the BWO. The use of a longitudinally slotted diffraction outlet instead of a continuous one makes it possible to reduce the volume of plasma and microparticles formed on the diffraction outlet surface under the action of an electron beam, and to improve their adsorption and removal. Keywords: relativistic microwave generator, backward wave oscillator, diffractive output, electron collector
Combustion rate of powdered porous silicon with limited space
Authors: Savenkov G. G.  , Kozachuk A. I.  , Poberezhnaya U. M.  , Freiman V. M.  , Zegrya G. G.
Published: September 2022

The method of determination combustion rate of powdered porous silicon with limited space is presented. The values of the combustion rates of porous silicon are close to the values of the rates of explosives. Keywords: porous silicon, combustion rate
Anishchenko-Astakhov quasiperiodic generator excited by external harmonic force
Authors: Kuznetsov A.P.  , Sedova Yu.V.
Published: September 2022

A harmonic effect on a modified Anishchenko-Astakhov generator capable of demonstrating two-frequency quasi-periodic oscillations in the autonomous mode is considered. The possibility of doubling the three-frequency tori in a non-autonomous system is shown. The possibility of the effect of chaos suppression by an external signal is demonstrated, which leads not only to periodic, but also to quasi-periodic modes when the influence amplitude exceeds a certain threshold. Keywords: torus doublings, suppression of chaos, quasiperiodic generator
Enhancing hydrophobic properties of ZnO structures using gold coatings
Authors: Muslimov A.E.  , Kanevsky V.M.
Published: September 2022

The effect of enhancement the hydrophobic properties of the ensemble of micro- and nanostructures ZnO as a result of coating with gold was discovered. For the first time, it has been shown that coating the ensemble with a micro- and nanoparticle ZnO layer of gold leads to a sharp increase in the wetting edge angle from 145 to 168o (water drop volume 5 mm3) and a decrease in the hydrophobicity/hydrophilicity transition time under ultraviolet irradiation. Keywords: ZnO, gold, superhydrophobic. Keywords: ZnO, gold, superhydrophobic
Effect of periodic macroroughness on development of turbulent free convection near a suddenly-heated vertical plate
Authors: Levchenya A.M.  , Smirnov E.M.  , Trunova S.N.
Published: September 2022

The results of numerical simulation of unsteady free convection developing near a suddenly heated plate, on which protrusions in the form of adiabatic cylinders of double height with respect to the diameter are arranged in a staggered order, are presented. The calculations were performed according to the Reynolds equations using a differential model of turbulent stresses. The range of variation of the Grashof number (plotted according to the thickness of the free convective flow), in which a significant intensification of heat transfer can be achieved, has been determined. It is shown that the best conditions for intensification are created if the longitudinal pitch in the array of protrusions is approximately twenty times the diameter of the latter. Keywords: unsteady free convection, vertical-plate boundary layer, heat transfer intensification, numerical modeling, Reynolds stress model.
Growth mechanism of monolayer on the top facet of Ga-catalyzed GaAs and GaP nanowires
Authors: Koryakin A.A.  , Eremeev Yu.A.  , Fedina S.V.  , Fedorov V. V.
Published: September 2022

The growth mechanism of monolayer on the top facet of Ga-catalyzed GaAs and GaP nanowires is investigated. Within the framework of a theoretical model, the maximal monolayer coverage due to the material in the catalyst droplet, the nanowire growth rate and the content of group V atoms in the droplet are found depending on the growth conditions. The estimates of the phosphorus re-evaporation coefficient from neighboring nanowires and substrate are obtained by comparing the theoretical and experimental growth rate of Ga-catalyzed GaP nanowires. Keywords: III-V nanowires, vapor-liquid-solid growth mechanism, nucleation
Losses measurement method for transmission lines at mmWave
Authors: Knyazev N. S.  , Malkin A. I.  , Chechetkin V. A.
Published: September 2022

An experimental method was developed to determine losses in microstrip and coplanar transmission lines for devices operating in the frequency range of 77-81 GHz. The parameters of the scattering matrices are obtained using a vector network analyzer and frequency upconverters. The calculation of losses in waveguide-coplanar and coplanar-microstrip adapters is made. Keywords: losses, attenuation, microstrip line, coplanar waveguide, electrodynamic parameters.
Penetration of liquid metal droplets through membranes based on single-wall carbon nanotubes
Authors: Gubarev V.M.  , Krivokorytov M.S.  , Ivanov V. V.  , Krivtsun V. M.  , Medvedev V. V.
Published: September 2022

The probability of penetration of droplets with different sizes (20 nm ~ 1 μm) through a thin (~ 90 nm) protective membrane based on single-walled carbon nanotubes (SWCNT) has been experimentally determined. It is shown that the probability of penetration of droplets less than 200 nm in size through the SWCNT membrane is 0.4%. The paper presents the results of comparing the droplets deposition rate in terms of "effective" thickness measured in the experiments and calculated via the RZLINE model. The simulation results are in good agreement with the experimental data. Keywords: SWCNT membranes, droplet penetration, RZLINE code.
Decrease of the air breakdown threshold by the subcritical streamer discharge when the initiator is placed near the metal screen
Authors: Bulat P.V.  , Volkov K.N.  , Grachev L.P.  , Esakov I.I.  , Lavrov P.B.
Published: September 2022

The influence of the screen size on the air breakdown by an induced subcritical streamer discharge is discussed based on the data of physical and computational experiments. A cylindrical metal vibrator mounted at a certain distance from the screen is used to initiate a streamer discharge. The initiator length is comparable with the half wavelength of electromagnetic field. Data on the effect of the distance from the emitting aperture to the screen and its width on the breakdown pressure are given. The dependence of the field amplification factor at the poles of a linear vibrator on the size of the reflector screen is obtained. Keywords: breakdown, streamer discharge, microwave discharge, plasma-assisted combustion.
Scalable Causal Structure Learning: Scoping Review of Traditional and Deep Learning Algorithms and New Opportunities in Biomedicine
Authors: Upadhyaya Pulakesh , Zhang Kai , Li Can , Jiang Xiaoqian , Kim Yejin
Published: September 2022

Background

Causal structure learning refers to a process of identifying causal structures from observational data, and it can have multiple applications in biomedicine and health care.

Objective

This paper provides a practical review and tutorial on scalable causal structure learning models with examples of real-world data to help health care audiences understand and apply them.

Methods

We reviewed traditional (combinatorial and score-based) methods for causal structure discovery and machine learning–based schemes. Various traditional approaches have been studied to tackle this problem, the most important among these being the Peter Spirtes and Clark Glymour algorithms. This was followed by analyzing the literature on score-based methods, which are computationally faster. Owing to the continuous constraint on acyclicity, there are new deep learning approaches to the problem in addition to traditional and score-based methods. Such methods can also offer scalability, particularly when there is a large amount of data involving multiple variables. Using our own evaluation metrics and experiments on linear, nonlinear, and benchmark Sachs data, we aimed to highlight the various advantages and disadvantages associated with these methods for the health care community. We also highlighted recent developments in biomedicine where causal structure learning can be applied to discover structures such as gene networks, brain connectivity networks, and those in cancer epidemiology.

Results

We also compared the performance of traditional and machine learning–based algorithms for causal discovery over some benchmark data sets. Directed Acyclic Graph-Graph Neural Network has the lowest structural hamming distance (19) and false positive rate (0.13) based on the Sachs data set, whereas Greedy Equivalence Search and Max-Min Hill Climbing have the best false discovery rate (0.68) and true positive rate (0.56), respectively.

Conclusions

Machine learning–based approaches, including deep learning, have many advantages over traditional approaches, such as scalability, including a greater number of variables, and potentially being applied in a wide range of biomedical applications, such as genetics, if sufficient data are available. Furthermore, these models are more flexible than traditional models and are poised to positively affect many applications in the future.
Cutaneous Angiomyolipoma—A Distinct Entity That Should Be Separated From Classic Angiomyolipoma: Complete Review of Existing Cases and Defining Fundamental Features
Authors: Sanchez Natalia Gabriela , Ávila Romay Alfonsina Angelica , Martínez Luna Eduwiges , Padilla Rodríguez Alvaro Lezid
Published: September 2022

Cutaneous angiomyolipoma is a rare mesenchymal tumor that is demographically, clinically, and immunohistochemically distinct from its renal and extrarenal counterparts. We present a case of cutaneous angiomyolipoma in the right retroauricular area of a 35-year-old male patient and provide a broad systematic review of the literature and the largest compilation of cutaneous angiomyolipomas reported to date. According to the findings presented in this review, we conclude that cutaneous angiomyolipoma should be completely separated from renal and extrarenal angiomyolipomas and therefore be considered a distinct entity in the classification of skin tumors.
Рефрактерна атипова тригемінальна невралгія, асоційована з реактивованою герпесвірусною інфекцією: патогенетичний зв’язок і ефективність комбінованого противірусного лікування
Authors: Maltsev D.V. , Fedirko V.O.
Published: September 2022

Актуальність. На сьогодні утвердилися уявлення щодо асоціації рефрактерної атипової тригемінальної невралгії (РАТН) з герпесвірусними інфекціями, причому реалізуються різні механізми ураження ЦНС. Мета: діагностика герпесвірусних інфекцій при РАТН з оцінкою зв’язків між болем і мікробним агентом та вивченням ефективності противірусного лікування. Матеріали та методи. Терапію пройшли 95 осіб з РАТН (досліджувана група, ДГ). 31 хворий відмовився від лікування (контрольна група 1, КГ1). КГ2 — 32 здорові особи аналогічного віку і статі. Противірусна терапія: валацикловір 3 г/добу, рекомбінантний α2b-інтерферон 3 млн МО п/шк 1 раз на 2 доби 2 міс. Проводилася ПЛР лейкоцитів крові (HSV-1/2, VZV, EBV, CMV, HHV-6, HHV-7, HHV-8), визначалися сироваткові концентрації IgM, IgA, IgG до HSV-1/2, VZV (ІФА). Проводилася оцінка імунного статусу (проточна цитофлуориметрія, ІФА). Результати. Реактивована герпесвірусна інфекція — в 87% випадків (р<0,05; Z<Z0,05), VZV — у 33%, HSV-1/2 — 23%, EBV — 26%, СMV — 7%, HHV-6 — 25%, HHV-7 — 42%, HHV-8 — 2% випадків. Відзначалися zoster (17%) і herpes sine herpete (23%), VZV-васкулопатія церебральних артерій (16%), скроневий медіанний склероз (27%), автоімунний енцефаліт (19%), VZV-псевдопухлина (3%), розсіяний склероз (21%), цервікогенний біль (8%), HHV-7-менінгомієліт (5%), нейроваскулярний конфлікт (17%), вірусний синусит (13%), тромбоз кавернозного синуса (6% випадків). Діагностовані мінорні імунодефіцити (85% випадків; р<0,05; Z<Z0,05): IgE (30%), IgG1 (17%), IgA (14%), IgM (18%), мієлопероксидази (21%), NK (23%), NKT (28%), CD4+ Т-клітин (13% випадків). Лікування ефективне щодо герпесвірусної інфекції (77%) та болю (61%) (р<0,05; Z0,05; Z>Z0,05). Висновки. РАТН асоційована з герпесвірусними інфекціями, які реактивуються у зв’язку з мінорними імунодефіцитами, а лікування валацикловіром та α2b-інтерфероном пригнічує герпесвіруси та зменшує інтенсивність болю.
Вегетативна дизрегуляція в патогенезі церебральної ангіодистонії та хронічної ішемії мозку
Authors: Stoyanov O.M. , Kalashnikov V.Y. , Vastyanov R.S. , Son A.S. , Kolesnik O.A. , Oleinik S.M.
Published: September 2022

Вегетативні дисфункції (ВД) ініціюють цереброваскулярні захворювання та призводять до їх клінічної реалізації. Авторами доведено, що найчастішим проявом ВД є церебральна ангіодистонія (ЦАД), яка може існувати самостійно або супроводжувати інші порушення вегетативної регуляції, у першу чергу впливати на церебральну гемодинаміку. У роботі було оцінено стан вегетативної системи при ЦАД на тлі ВД або хронічної ішемії мозку (ХІМ). Встановлено, що цефалгії є ключовим проявом ЦАД, яка є облігатною до ХІМ. У всіх групах пацієнтів переважав патологічний вегетативний тонус, а інтенсивність цефалгій наростала на тлі симпатикотонії, що можна трактувати як підвищення ерготропності та полегшення розвитку больового синдрому. Зміни фаз викликаних шкірних симпатичних потенціалів були характерними для дисфункції надсегментарних відділів вегетативної нервової системи (ВНС), виснаження ерготропного функціонування з погіршенням проявів ЦАД. ВД беруть участь у реалізації, втручаються у розвиток, супроводжують клінічний перебіг ЦАД в умовах функціонального або структурного ураження мозку в процесі розвитку ХІМ. ЦАД є облігатною патологією при ВД та ХІМ. ВД активно впливають на стан усіх відомих регуляторних контурів мозкового кровотоку, а також на вазомоторні центри, що призводить до порушення тонусу та реактивності церебральних судин. Результати досліджень мають сприяти оптимізації лікувальної тактики при ХІМ з урахуванням індивідуальних особливостей стану ВНС, реактивності мозкового кровотоку.
COVID-19 і хвороба Паркінсона
Authors: Karaban I.M. , Hasiuk T.V. , Karasevych N.V.
Published: September 2022

Значущий вплив пандемії тяжкого гострого респіраторного синдрому 2, спричиненого коронавірусом COVID-19, що став викликом для лікарів усього світу, не зміг оминути хронічне обтяжуюче захворювання для людської популяції — хворобу Паркінсона (ХП). Оскільки якість життя пацієнтів з ХП неухильно знижується, вивчення цього питання набуває особливо важливого значення в період захворювання на COVID-19 у пацієнтів з ХП. На сьогодні ці виклики становлять суть сучасних наукових досліджень. Гостра потреба у висвітленні причин посилення симптоматики паркінсонізму у пацієнтів із SARS-CoV-2 та можливі шляхи вдосконалення лікування є актуальними для клінічної неврології.
Історія планування та будівництва в Одесі лікарні для нервовохворих — так званого Панкеєвського корпусу. Частина 1
Authors: Stoyanov O.M. , Son A.S.
Published: September 2022

У статті описана історія планування та будівництва психоневрологічної лікарні в Одесі, яка була споруджена на пожертвування поміщиці Г.С.Панкеєвої на спомин про доньку, яка наклала на себе руки у 1906 році. Описано особливості проєктування так званого Панкеєвського корпусу у стилі ретроспективізму за активної участі С.С.Налбандова спільно з міським архітектором Ф.П.Нестурхом у період з 1910 по 1914 р. Будівництво здійснено на ділянці, виділеній міською думою у районі Слобідки-Романівки поряд із новою окружною лікарнею. Відразу після будівництва споруда була перепрофільована під лазарет на період Першої світової війни, після чого занепала. Значних ушкоджень з частковим руйнуванням корпус отримав у період австро-німецької окупації Одеси через вибухи артилерійських складів. Тільки з 1923 року після реконструкції Панкеєвський корпус почав працювати за профілем. У 1930 р. сюди перейшла кафедра нервових хвороб, з’явилися нове обладнання, фізіотерапія, лабораторії, бібліотека. Однак через 18 років, у період німецько-румунської окупації (1941–1944 рр.) будівля була захоплена румунською військовою частиною. Наведено деякі факти щодо порятунку наукової кафедральної бібліотеки.
Депресія, тривога і порушення сну: як вийти із замкненого кола
Authors: Burchynskyi S.H.
Published: September 2022

Статтю присвячено питанням лікування тривожних розладів, а також депресії. Приділено увагу порушенням сну при депресивних станах. Підкреслена ефективність тразодону — першого (і єдиного в Україні) антидепресанту, що є представником групи інгібіторів зворотного захоплення серотоніну. Даний препарат є класичним представником концепції мультимодальних препаратів. Він поєднує снодійну й анксіолітичну дії при призначенні в малих дозах. При використанні великих доз тразодон починає працювати як антидепресант.
Antioxidant, anti-inflammatory and antimicrobial activities promoted by hydroalcoholic extract of Laguncularia racemosa (l) c.f. leaves Gaert
Authors: Dias Jhonatta Alexandre Brito , Júnior Antonio Carlos Vital , Costa Fábio Miguel Santos , Lima Priscilla Yevellin Barros de Melo , Pereira Helimarcos Nunes , Filho Iranildo José da Cruz , Melo Cristiane Moutinho Lagos de , Silva Teresinha Gonçalves da , Souza Ivone Antônia de
Published: September 2022

This study aimed to evaluate the antioxidant, anti-inflammatory, antimicrobial and toxicity potential of the hydroalcoholic extract of the leaves of L. racemosa (EHALr) a mangrove plant. The results showed that the extract was able to promote moderate antioxidant activity. In acute toxicity assays, EHA-Lr showed low toxicity, with no significant changes in animal and organ weights and in biochemical and hematological parameters. In the evaluation of anti-inflammatory activity, the 200 mg/kg dose of EHA-Lr was most effective in reducing leukocyte migration in the paw edema model and in the LPS-induced acute lung inflammation model the 50 mg/kg dose was most effective in reducing plantar volume. The antimicrobial potential of the hydroalcoholic extract was observed against Staphylococcus aureus, Micrococcus luteus, Bacillus subtilis, Pseudomonas aeruginosa, Serratia marcencens, Escherichia coli and Enterococcus faecalis strains, proving to be effective. However, the extract was most active against the Micrococcus luteus strain (0.93mg/mL). The hydroalcoholic extract of L. racemosa leaves showed anti-inflammatory and antimicrobial activities, with low toxicity, which makes it a strong promise to be applied or combined in clinical therapy.
A Social Cognitive Approach to Shashi Tharoor’s An Era of Darkness: The British Empire in India
Authors: Persia T. R. , Senthamarai Dr T.
Published: September 2022

An Era of Darkness, a speech by Shashi Tharoor at Oxford Union in England in 2015, came in print in October 2016. The speech was mostly devoted to dispelling the notion of the benefits of British rules, such as democracy and geographic and political unity. However, the book was slightly modified further to graphically record the blinding darkness of British rule in India. This book undoubtedly serves as an eye-opener for the previous and current generations of Indians. In this book, Shashi Tharoor explores how the racist, selfish British brutally exploited India - starving its people, taking their wealth, tearing apart its social structure, and leaving it with a collapsed economy, an unfit democracy, and bewildered modernity. The objective of this research is to analyse the novel using the social cognition concept.
Opportunities and Challenges for Teaching English at Schools from Student-Centered Approach
Authors: Thuy Pham Le , Hoa Le Huong , Huy Dinh Tran Ngoc , Ha Ngo Tran Viet , Trang Hoang Thien
Published: September 2022

Our study objective is to figure out: What are previous related studies? And, What are OPPORTUNITIES AND CHALLENGES FOR TEACHING English AT SCHOOLS FROM STUDENT-CENTERED APPROACH? Next, By using several qualitative analytical methods, our results show that: Improve teaching qualifications; Raise awareness of students in learning from others ; Differentiation method in class; More student-led projects in class; Assign tasks for students to help others who are in need. Therefore, our study can be expanded for other emerging markets.
Analysis of Warehouse Structure in Pre-Engineered Building with Conventional Steel Building
Authors: Pardhi Sourabh , Bandewar Deepak , Jat Sachin
Published: September 2022

Abstract: The concept of Pre-Engineered Building in creation format of structures has helped into optimizing a design of steel structure. Steel industry sector is developing more hastily in almost throughout elements of the world. In a hazard of global warming the usage of steel structures is not only efficient but also sustainable at the time. In Pre-Engineered Buildings (PEB) steel structures (Pre-fabricated) time is being the maximum significant aspect is built in very short duration period. In any type of Industrial structures and Pre-Engineered Buildings (PEB) Maximum Span, Column free suitable structures are the most vital in fulfills this requirement at the aspect of decreased time and price in comparison to conventional structures. Here this is study is achieved by planning 3D frame of an Industrial Warehouse constructing the use of the thoughts and studying the frames using appropriate assessment and design software after due validation. In this research, an industrial structure warehouse is analyzed and designed according to the Indian standards (IS 800-2007) and additionally through referring American Standard (AISC LRFD). The various loads like dead, live, wind, seismic and snow loads according as per IS codes are considered for the present work for relative study of Pre-Engineered Buildings (PEB) and Conventional Steel Building (CSB). To compare the consequences of the numerous parametric study to perform the variations in terms of shear force, support reaction, weight correlation and cost evaluation.
Smart Helmet
Authors: Magdum Madhura , Somawanshi Seema , Khivansara Anjali , Sawant Shubham , Chopade Dr. Rupali
Published: September 2022

Abstract: Helmet safety is a type of protective headgear used by workers and riders, which makes the work safer than before. The main goal of our project is risk detection, awareness, and prevention. This protective helmet makes the user feel comfortable and provides maximum protection and security. Many lives could have been saved if paramedics could have obtained the accident information and arrived on time at the scene. To solve these current problems we create a protective helmet that provides the best solution. The aim of our project is to design a smart and low-cost helmet that can prevent road accidents. This can be done using advanced features such as alcohol detection, smoke detection, vibration detection, temperature detection. For that purpose, we will use a smoke sensor, alcohol sensor, vibration sensor, temperature sensor, etc. This makes it a smart hat. It is compulsory to wear a protective helmet; otherwise, a no-brainer will start. The Bluetooth Module is used as a wireless communication link between the sender and the receiver and after receiving the data on the hardware we compare it with the software data. The software application is designed in such a way that it locates the exact location according to Google Maps. Many people lost their lives due to late reporting of the accident as they could not track the exact GPS location of the accident. Sometimes we cannot report an accident in a timely manner. The main reason many people get head injuries is because they do not wear helmets.
Camouflage Clothes Detection
Authors: Sreedattu Kondala , Bhaskari Prof. D. Lalitha
Published: September 2022

Abstract: Presentation of a study and implementation on task named camouflage clothes detection. The aim of the study is to identify clothes that “seamlessly” blend in with their surroundings. Usage of a dataset, called 8k_normal_vs_camouflage_clothes_images, which consists of about 8k images of camouflage clothes and 8k images of normal clothes. Residual Networks (ResNets) are used for this task. The high intrinsic similarities between background and object make camouflage detection a challenging task
A Study to Identify the Age of Menopause and Its Relation to Socio-Economic Determinants and to Assess the Knowledge and Attitude About the Health Effects of Menopause
Authors: Rana Shivani , Panghal Ms. Rachna
Published: September 2022

Abstract: Menopause is the most prominent event in women’s middle age and marks the end of a women’s reproductive life. Symptoms of menopause are the basis of health care providers and public health professionals to provide adequate medical care, including improving the physiological and psychological state of women. The main objective of the study was to determine age at menopause along with its health consequences and socio-economic determinants affecting the quality of life. A total of 70 women were enrolled in the study. Information was collected from 40-55 years old womens to estimate the age of menopause along with socio-economic determinants and health effects of menopause. Questionnaire was created consisting of socio demographic data, prevalence of menopausal symptoms, knowledge and attitude towards menopaus for data collection. From the study, we found the average age of menopause was 48.5 years, which is higher than other studies conducted in India, reason may be methodological. Psycho-physiological changes were associated with irritability, heart discomfort, anxiety, depressive mood, hot flashes, physical and mental exhaustion, sleep problems. There must be well planned, balanced health education and necessary treatment arrange for the welfare of perimenopause women for better quality of life. The obtained results were analyzed and discussed in detail
Anatomizing Terrorism
Authors: K Bhavana Yadav , A Charushree , Vishwas Shreya
Published: September 2022

Abstract: Terrorism has stricken fear in the hearts of many people across states and nations. To predict future patterns and gain past insights, in this report we aim to analyse the GTD dataset for various terrorist attacks and try to incorporate meaningful inferences from it along with bringing new novel pat- terns and relations undiscovered till now using various machine learning models like random forest classifier,bagging,k-NN,ANN after applying some initial cleaning and exploratory analysis on the data using classic visualising techniques like wordcloud, heat maps,geographical graphs and more.
Critical Tracing of Arabic Language Acquisition in Indonesian Context
Authors: Arifin Zainul , Ramadhanti Febriani Suci , Desrani Ayu , Mahmudi Arifka , Guettaoui Bedra Kddour
Published: September 2022

This study aimed to explore how Arabic phonological, vocabulary, and grammatical are acquired.  A qualitative approach was used to deeply explore that acquisition. The results showed that the strategy of acquiring phonological aspects carried out by drilling audio listening activities, either in the form of lectures from native speakers directly or in the form of murottal, Netflix, YouTube, and online radio; while the vocabulary acquisition strategy is done by using an Arabic dictionary both online and offline, as well as reading more books, and news through online portals. Grammatical elements are acquired by directly reading nahwu and shorof books such as Jurumiyyah, Nahwu Wadhih, and Al-arabiyah baina yadaik practicing directly by studying Arabic sentences and practicing I'rab. The findings showed that the language acquisition process using various strategies can provide language acquisition of phonological, vocabulary, and grammatical aspects.  Practical implications and further research to explore more diverse variables and more complex research methods are provided.
The trajectory of job stress, psychological detachment, and job burnout during the workweek
Authors: Li Hu , Xu Qianqian , Huang Xiuxia , Su Lingjie , Wang Jichen , Xiong Shengnian
Published: September 2022

Job burnout is an important topic in academia and practice, and is related to job stress and psychological detachment. On the basis of the effort–reward imbalance model and the job demands–resources model, we proposed that job stress, psychological detachment, and job burnout
would each show a growth trajectory during the workweek. Through using an experience sampling method and latent growth modeling, we collected data from 54 Chinese employees via an online survey that participants completed on each day of the working week. Results reveal that during the workweek
job stress showed a linear increasing trajectory, psychological detachment showed a U-shaped curve trajectory, and job burnout showed an inverted U-shaped curve trajectory. Our findings provide a reference for managers to put in place interventions to reduce the generation of negative emotions
among employees over the workweek.
Impact of perceived discrimination on travel intention
Authors: Shang Guanghui , Chen Xianfeng , Liu Lijun
Published: September 2022

We took tourism as the research object and used structural equation modeling to examine the influence of perceived discrimination, loss of face, customer value, tourism intention, and sense of power on the consumption experience. Participants were 717 holidaymakers recruited from several
major tourist attractions in China. The results were as follows: (a) Both loss of face and customer value had a mediating effect on the relationship between perceived discrimination and travel intention; (b) loss of face and customer value had a chain mediating effect on the relationship between
perceived discrimination and travel intention; and (c) sense of power had a moderating effect on the relationships between perceived discrimination and loss of face, and between perceived discrimination and customer value. Suggestions are provided for practitioners to improve marketing performance.
Information technology use and creativity in Chinese public sector employees: Work engagement as a mediator
Authors: Yang Guodong , Zhou Xinran , Xu Qiumeng
Published: September 2022

Although an environment conducive to igniting the creativity of employees continues to be promoted in the Chinese public sector, little is yet known about the relationship between the use of information technology (IT) for work in the sector and employee creativity. We obtained data
from 232 Chinese public sector employees to examine the relationship of their IT use and their creativity, and the mediating role of work engagement in this relationship. Structural equation modeling was used to analyze the data. The results show that the employees' IT use for work was positively
related to their creativity through the mediator of work engagement. Thus IT use for work enhanced work engagement, and this, in turn, facilitated creativity. Our study offers practical guidance for the enhancement of employee creativity in the Chinese public sector.
Professional identity and learning burnout in college students majoring in art education: Professional commitment as a mediator
Authors: Mei Rong , Wei Yilin
Published: September 2022

In China the goal of art education for college students is to train them to become teachers of various art categories, including design, dance, painting, and music. We investigated the effect of professional identity on learning burnout among 505 college students majoring in art education,
and assessed the mediating role of professional commitment in this relationship. The results indicate that there was a significant negative correlation between professional identity and learning burnout. Furthermore, professional commitment mediated the relationship between professional identity
and learning burnout. Our findings contribute to understanding of the relationships among professional identity, professional commitment, and learning burnout in college students studying art education in the context of Chinese higher education. The findings also provide educators with practical
implications to avoid learning burnout among students. Future directions for research are suggested.
The role of emotions in the relationship between prosocial values and behaviors
Authors: Zhang Yujie
Published: September 2022

Willingness to contribute to society is a prosocial value that might be positively associated with prosocial behaviors, such as charitable giving. This study examined whether positive and negative emotions influence the relationship between willingness to contribute to society and charitable
giving in older adults. I retrieved cross-sectional data from the Chinese General Social Survey 2012, which was completed by 2,688 Chinese adults aged between 60 and 104 years. The results show that willingness to contribute to society was positively associated with charitable giving. This
relationship was moderated by selfreported feeling of depression, which had an inhibitory effect, and was partially mediated by subjective happiness. Further attention should be paid to the underlying mechanisms between prosocial values and prosocial behaviors.
Perceived COVID-19 risk exposure and adoption of preventive behaviors: Social media information consumption as a moderator
Authors: Wu Yang , Yang Xiaoying , Wu Yao
Published: September 2022

Increasing preventive behaviors is critical to mitigating the rapid spread of COVID-19, but this can be challenging as some people are reluctant to practice these behaviors. We explored the mediating role of threat appraisal in the link between perception of COVID-19 risk exposure and
preventive behavior, and the moderating effect of COVID-19 information consumption through social media. We recruited 577 people in China to complete a survey. The results show that perception of COVID-19 risk exposure was positively associated with preventive behaviors and that threat appraisal
partially mediated this relationship. Moreover, COVID-19 information consumption on social media moderated the mediating effect. These results provide theoretical and practical implications to increase individuals' preventive behaviors during the COVID-19 pandemic.
Effect of framing on consumers' willingness to participate in a promotion campaign
Authors: Lin Haichao , Wu Xiaoyue
Published: September 2022

This research explored whether the way companies frame their promotions can increase consumers' participation. Using two studies (Ns = 97 university students and 195 online participants, respectively), we demonstrated that compared with an individual-based promotion (i.e., a
promotion targeting the individual consumer), a platform-based promotion (i.e., a promotion targeting all consumers of a given shopping platform) increased consumers' willingness to participate in a promotion campaign. This effect occurred because a platform-based promotion (vs. an individual-based
promotion) increased consumers' perceived savings, further enhancing their willingness to participate (Study 1). We also showed that only consumers who were promotion sensitive responded more actively to a platform-based promotion than to an individualbased promotion (Study 2). Our findings
contribute to the promotion and framing literature and provide practical implications for marketing communications.
Tecendo os caminhos da seda
Authors: Duarte Bruna Marques , Ribeiro Rhuan Guilherme Tardo , Mello Rosimara Albuquerque
Published: September 2022

Este relato de experiência traz os resultados de uma atividade pedagógica na Escola Estadual do Campo Barão de Lucena, que buscou resgatar o histórico da produção do casulo de seda em Nova Esperança, noroeste do Paraná. Utilizando a metodologia de projetos, professoras de arte e ciências proporcionaram aos/às estudantes diversas vivências relacionadas à produção de casulo, como palestras, visitas técnicas e oficinas. Os materiais coletados e os procedimentos aprendidos nas atividades resultaram em um documentário realizado pelos/as estudantes e apresentado à comunidade, assim como a exposição dos/as discentes sobre seus aprendizados, em uma troca de vivências com os/as visitantes. Pudemos verificar a possibilidade de alinhamento entre as disciplinas de ciências e arte como incorporação da valorização cultural na escola do campo.