bluuebunny/crossref_metadata_2025 huggingface dataset:
PROSPECTS AND LIMITATIONS OF THE EURASIAN NEIGHBORHOOD POLICY
Authors: Spartak A. N. , Voronova T. A.
Published: December 2018

The article discusses current aspects of the development of relations between the Eurasian Economic Union and neighboring countries, primarily with CIS countries that are not members of the EAEU. Such relationships are reinforced by mutual economic interests, but at the same time they are complicated by strong foreign and foreign economic policies pluralism of CIS states as well as high activity and growing presence of non-regional players (especiallyChina, the EU,Turkey) in the post-Soviet space. The fragile balance of centripetal and centrifugal tendencies in the development of post-Soviet integration still persists, however additional measures are needed to ensure economic cooperation between the EAEU and the CIS countries outside the EAEU and also in the CIS contour as a whole. The concept of the Eurasian Neighborhood Policy is proposed as a framework platform for the implementation of such measures, leading to stronger integrity and connectivity of the post-Soviet space, realization of joint cooperation programmes and projects. The instruments of the neighborhood policy may include extended economic partnership agreements between the EAEU and interested CIS and other neighboring countries, sectoral agreements between them (for instance, regarding technical regulation issues) with expected fast practical effects, deeper conjugation of the EAEU and CIS formats.
EXPORT POTENTIAL OF THE RUSSIAN FEDERATION IN THE NON–RESOURCE SECTOR AND PROSPECTS FOR ITS GROWTH
Authors: Trokhova E. V. , Izutina T. A.
Published: December 2018

TodayRussiahas embarked on the difficult path of transition to a new, higher, production and export level, so it is important to understand in which areas domestic enterprises can increase supply volumes abroad and most successfully compete in the global market. To this end, the article identified the key features of the concept of «export potential»: its dependence on the existing production capacity and the competitiveness of products manufactured for export. A retrospective analysis of the commodity structure of Russian export deliveries showed that non-fuel components account for about 41%, and about 34% of products have a non-resource character, with positive dynamics in such important groups as «machinery and equipment», «chemical products and rubber» and others. However, by the end of 2017, there is a predominance of goods of the lower redistribution (about 46% of non-resource non-energy exports), that indicates the high dependence of the Russian exports on the simplest products. Experts identified the points of growth of non-resource exports: the sphere of high technologies, the internationalization of small and medium-sized firms, the development of the regional export potential, and the expansion of tourism and educational services exports.
Association of SLCO1B1 Polymorphisms and Atorvastatin Safety and Efficacy: A Meta-analysis
Authors: Du Yaming , Wang Sizheng , Chen Zhangyong , Sun Shusen , Zhao Zhigang , Li Xingang
Published: December 2018

Background:

Atorvastatin is the best-selling statin in the market. However, some patients have to
reduce drug doses or discontinue atorvastatin therapy mainly due to adverse drug reactions (ADRs). Genetic
factors play an important role in the occurrence of ADRs.

Aim:

This study aimed to investigate the association between SLCO1B1 polymorphisms (c.521T>C or
c.388A>G) and atorvastatin safety and efficacy.

Methods:

We systematically searched PubMed, Web of Science and Embase to screen relevant studies published
before Sep 2018. This meta-analysis was performed to identify the relationship between SLCO1B1 c.521T>C or
c.388A>G polymorphisms and atorvastatin-related ADRs by the odds ratios (ORs) and 95% confidence intervals
(CIs). The relationship of SLCO1B1 polymorphisms and lipid-lowering effects [low-density lipoprotein cholesterol
(LDL-C), total cholesterol (TC)] was assessed in pooled data by calculating the mean difference (MD) with
95% CIs. All statistical tests were performed by the Review Manager 5.3 software.

Results:

A total of 13 studies involving 1,550 atorvastatin users were included in this analysis. There was a significant
association between the SLCO1B1 c.521T>C polymorphism and atorvastatin-related ADRs associated
with risk allele C (dominant model: OR=1.57, P=0.01). Allele C is associated with increased lipid-lowering efficacy
in people with Hyperlipidemias as compared to allele T (LDL-C/dominant model: MD=6.19, P<0.00001 and
(TC)/dominant model: MD=2.07, P=0.008). No association between the SLCO1B1 c.388A>G polymorphism and
ADRs or efficacy was observed (P>0.05).

Conclusion:

SLCO1B1 c.521T>C polymorphism is a valuable biomarker for the evaluation of atorvastatin safety
and efficacy.
Catalytic Conversion of Biorenewable Sugar Feedstocks into Market Chemicals
Authors: Diamond Gary , Hagemeyer Alfred , Murphy Vince , Sokolovskii Valery
Published: December 2018

The transformation of low cost sugar feedstocks into market chemicals and monomers for
existing or novel high performance polymers by chemical catalysis is reviewed. Emphasis is given to
industrially relevant, continuous flow, trickle bed processes. Since long-term catalyst stability under
hydrothermal conditions is an important issue to be addressed in liquid phase catalysis using
carbohydrate feedstocks, we will primarily discuss the results of catalytic performance for prolonged
times on stream. In particular, the selective aerobic oxidation of glucose to glucaric acid and the
subsequent selective hydrogenation to adipic acid is reviewed. Hydroxymethylfurfural (HMF),
which is readily available from fructose, can be upgraded by oxidation to furan dicarboxylic acid
(FDCA) or by consecutive reduction and hydrogenolysis to hexanetriol (HTO) followed by
hydrogenolysis to biobased hexanediol (HDO). Direct amination of HDO yields biobased
hexamethylene diamine (HMDA). Aerobic oxidation of HDO represents an alternative route to
biobased adipic acid. HMDA and adipic acid are the monomers required for the production of nylon-
6,6, a major polymer for engineering and fibre applications.
An Approach of Anomaly Detection and Neural Network Classifiers to Measure Cellulolytic Activity
Authors: Barbosa-Santillán Luis Francisco , de los Angeles Calixto-Romo María , Sánchez-Escobar Juan Jaime , Barbosa-Santillán Liliana Ibeth
Published: December 2018

Aim and Objective:

A common method used for massive detection of cellulolytic
microorganisms is based on the formation of halos on solid medium. However, this is a subjective
method and real-time monitoring is not possible. The objective of this work was to develop a method
of computational analysis of the visual patterns created by cellulolytic activity through artificial
neural networks description.

Materials and Methods:

Our method learns by an adaptive prediction model and automatically
determines when enzymatic activity on a chromogenic indicator such as the hydrolysis halo occurs.
To achieve this goal, we generated a data library with absorbance readings and RGB values of
enzymatic hydrolysis, obtained by spectrophotometry and a prototype camera-based equipment
(Enzyme Vision), respectively. We used the first part of the library to generate a linear regression
model, which was able to predict theoretical absorbances using the RGB color patterns, which
agreed with values obtained by spectrophotometry. The second part was used to train, validate, and
test the neural network model in order to predict cellulolytic activity based on color patterns.

Results:

As a result of our model, we were able to establish six new descriptors useful for the
prediction of the temporal changes in the enzymatic activity. Finally, our model was evaluated on
one halo from cellulolytic microorganisms, achieving the regional classification of the generated
halo in three of the six classes learned by our model.

Conclusion:

We assume that our approach can be a viable alternative for high throughput screening
of enzymatic activity in real time.
Electrochemical behavior of zinc layer anodes used for galvanic protection of steel in reinforced concrete
Authors: Garcia David , Laurens Stéphane , Panin Stéphane
Published: December 2018

Steel corrosion is the most common reason for the premature deterioration of reinforced concrete structures. Consequently, cathodic protection of steel in concrete has been substantially developed during the past two decades. In particular, galvanic protection consists in generating a natural macrocell corrosion system in which a sacrificial metallic anode (zinc, typically) is involved to apply a cathodic polarization to the corroding steel layout, in order to mitigate or annihilate the corrosion kinetics. Whether the general principle of cathodic protection is not questionable, the global design process can be significantly improved by increasing the knowledge on electrochemical behaviours of the different components of the protecting system. Regarding zinc anodes in concrete, the literature is very scarce. The time evolution of such systems is also not rigorously addressed, aging effects are systematically ignored and zinc anodes are usually considered as non-polarizable and inert over time. In this paper, the polarization response of a zinc layer anode (ZLA) in concrete electrolyte and its time evolution are studied. The results show a rapid evolution of the ZLA behavior, once the protecting system is connected to steel reinforcements. Moreover, the characterization of ZLA provided relevant electrochemical properties for the numerical design of galvanic protection systems.
Zaštita dostojanstva
Authors: Kožina Karlo
Published: December 2018

U radu se propituje postupak medicinski pomognute oplodnje, njezino zakonsko uređenje u hrvatskom pravnom poretku te, posebno, zaštita dostojanstava u tom postupku. Autor problematizira pitanje postojanja eugenike u Zakonu o medicinski pomognutoj oplodnji te nudi moguće odgovore. Određujući pojam ljudskog dostojanstva nudi vlastitu definiciju tog pojma, uzimajući pritom u obzir i druga poimanja. U središtu autorova interesa prikazati je i pokazati svezu između preimplantacijske genetske dijagnostike (PGD) i eugenike. Najzad, autor nudi moguće odgovore iz bioetičke ali i pravne perspektive na problematiku koja proizlazi iz zakonskog uređenja medicinski pomognute oplodnje u Republici Hrvatskoj.
Влияние квантового магнитного поля на разогрев носителей заряда в чистом Ge
Authors: Банная В.Ф. , Никитина Е.В.
Published: December 2018

AbstractThe results of an experimental study of charge-carrier heating by an electric field E in pure n - and p -type germanium samples in a quantizing magnetic field H , at E ⊥ H and under carrier photoexcitation conditions, are considered in detail. The results obtained are in qualitative agreement with the predictions of the theory of charge-carrier capture in crossed electric and magnetic fields.
Электролюминесценция в гетероструктурах n-GaSb/InAs/ p-GaSb с одиночной квантовой ямой, выращенных методом МОГФЭ
Authors: Михайлова М.П. , Иванов Э.В. , Данилов Л.В. , Левин Р.В. , Андреев И.А. , Куницына Е.В. , Яковлев Ю.П.
Published: December 2018

AbstractThe electroluminescent characteristics of a type-II n -GaSb/ n -InAs/ p -GaSb heterostructure with a single deep quantum well grown by metalorganic vapor-phase epitaxy are investigated. The energy-band diagram of the structure and the positions of the electron and heavy-hole energy levels are calculated. The analysis of the current–voltage characteristics demonstrates that the dark current in the structure under study flows via the tunneling mechanism. Intense electroluminescence characterized by a weak temperature dependence was observed in the spectral range of 3–4 μm at T = 77 and 300 K. The main electroluminescence band ( h ν = 0.40 eV at 77 K) corresponds to direct radiative transitions between electrons from level E _1 in the InAs quantum well and heavy holes from the continuum at the n -GaSb/ n -InAs heterointerface. A low-intensity electroluminescence band at h ν = 0.27 eV ( T = 77 K) originates from indirect (tunneling) transitions from the first electron level in the quantum well to the second level of heavy holes localized in the valence-band “notch” at the n -InAs/ p -GaSb heterointerface.
Исследование мемристорного эффекта в нанокристаллических пленках ZnO
Authors: Смирнов В.А. , Томинов Р.В. , Авилов В.И. , Алябьева Н.И. , Вакулов З.Е. , Замбург Е.Г. , Хахулин Д.А. , Агеев О.А.
Published: December 2018

AbstractThe results of experimental investigations into the memristor effect and influence of annealing modes on the electrical properties of nanocrystalline zinc-oxide films fabricated by pulsed laser deposition are presented. The possibility of fabricating a nanocrystalline zinc-oxide film by pulsed laser deposition in a broad range of electrical (resistivity from 1.44 × 10^–5 to 8.06 × 10^–1 Ω cm) and morphological (roughness from 0.43 ± 0.32 to 6.36 ± 0.38 nm) parameters due to the use of post-growth annealing in oxygen (pressure 10^–1 and 10^–3 Torr, temperature 300 and 800°C, and duration from 1 to 10 h) is presented. It is shown that a nanocrystalline zinc-oxide film 58 ± 2 nm in thickness manifests a stable memristor effect slightly dependent on its morphology—applying a voltage of –2.5 and +4 V leads to switching between states with the resistance 3.3 ± 1.1 × 10^9 and 8.1 ± 3.4 × 10^7 Ω, respectively. These results can be used when developing designs and production processes of resistive random-access memory (RRAM) units based on the memristor effect as well as optoelectronics, microelectronics, and nanoelectronics and nanosystem devices.
О природе повышения подвижности электронов в канале инверсии у границы раздела кремний-окисел после полевого воздействия
Authors: Гольдман Е.И. , Набиев А.Э. , Нарышкина В.Г. , Чучева Г.В.
Published: December 2018

AbstractThe conduction characteristics of the inversion channel of Si-transistor structures after the ionic polarization and depolarization of samples are measured in (0–5)-T transverse magnetic fields at temperatures from 100 to 200 K. After ionic polarization in a strong electric field at 420 K, no less than 6 × 10^13 cm^–2 ions flowed through the oxide. The previously found tenfold increase in the conductivity in the source–drain circuit after the polarization of insulating layers is explained by the formation of a new electron transport path along the surface impurity band, related to delocalized D^– states; these states are generated by neutralized ions located in the insulating layer at its interface with the semiconductor.
Структурные, упругие, электронные свойства и межатомные взаимодействия серии металлических тетраборидов MB-=SUB=-4-=/SUB=- (M=Ru, Rh, Pd, Os, Ir, Pt), полученные из FLAPW-GGA-расчетов
Authors: Суетин Д.В.
Published: December 2018

AbstractThe report presents the results of systematic first-principle FLAPW–GGA calculations of a series of metallic tetraborides MB_4 (where M = Ru, Rh, Pd, Os, Ir, and Pt) with space groups Pmmn , Immm , R -3 m , and Pnnm . Their equilibrium structural parameters, cohesion and formation energies, elastic constants, anisotropies, Vickers microhardnesses, Debye temperatures, sound velocities, as well as electronic properties and interatomic interactions are estimated and analyzed as compared to each other and the available theoretical data.
Абсолютная неустойчивость ГЦК-решетки кристаллов инертных газов под давлением
Authors: Троицкая Е.П. , Пилипенко Е.А. , Горбенко Е.Е.
Published: December 2018

AbstractOn the basis of ab initio calculations of the phonon frequencies of compressed rare-gas crystals in the model of deformable and polarizable atoms, dynamic instability of the fcc lattice of these crystals is studied. In addition to the earlier-considered three-body interaction, which is associated with the overlapping of the electron shells of atoms, the short-range potential includes three-body forces caused by the mutual deformation of the electron shells of neighboring atoms. It is shown that the allowance for the deformation of the dipole-type electron shells of atoms in the pair and three-body approximations leads to softening of the critical vibrations and absolute instability of the fcc lattice at pressures higher than the critical values, p > p _ c . For light crystals of Ne and Ar under compressions of 0.76 ( p _ c = 422 GPa) and 0.71 ( p _ c = 405 GPa), respectively, the softening of the longitudinal mode is observed at the boundary of the Brillouin zone at the point L ; for heavy crystals of Kr and Xe under compressions of 0.686 ( p _ c = 240 GPa) and 0.605 ( p _ c = 88 GPa), the transverse mode T _1 is softened in the direction Σ. The behavior of second-order Fuchs elastic moduli of compressed rare-gas crystals is discussed.
Получение наноразмерных порошков оксида вольфрама и вольфрама
Authors: Абдуллин Х.А. , Азаткалиев А.А. , Габдуллин М.Т. , Калкозова Ж.К. , Мукашев Б.Н. , Серикканов А.С.
Published: December 2018

AbstractNanopowder tungsten oxide and metallic tungsten are obtained via pyrolysis of ammonium metatungstate. Two methods are used for the synthesis of tungsten oxide: the use of a fibrous matrix and pyrolysis of aerosol particles. Tungsten oxide particles are formed during the pyrolysis in air. Metallic tungsten nanoparticles are obtained via subsequent thermal reduction of tungsten oxide in hydrogen. The structure and morphology of the samples are studied with X-ray diffraction and scanning electron microscopy. Tungsten nanopowders with average sizes from 7 to 30 nm are obtained depending on synthesis temperature. The electrochemical characteristics of electrodes coated with tungsten nanoparticles are studied with cyclic voltammetry, impedance spectroscopy, and galvanostatic charge–discharge methods. An electrode with W nanoparticles exhibited a specific low-frequency capacitance of about 90 F/g due to thin tungsten oxide film on the surface of tungsten nanoparticles.
Возможный переход жидкость-жидкость в расплаве Ga-In, введенном в опаловую матрицу
Authors: Нефедов Д.Ю. , Чарная Е.В. , Усков А.В. , Подорожкин Д.Ю. , Антоненко А.О. , Haase J. , Кумзеров Ю.А.
Published: December 2018

AbstractThe temperature evolution of the Ga_94In_6 liquid alloy introduced into an opal matrix has been studied by the NMR method in the temperature range 300–155 K. The temperature dependences of the position and the intensity of the NMR signals from ^71Ga, ^69Ga, and ^115In isotopes have been measured upon cooling and heating of the nanocomposite. The ^71Ga NMR line has been observed to be split into two components on cooling below 176 K with a transfer of the intensity to the high-frequency component. The results demonstrate an induced by nanoconfinement shift of the eutectic point in the alloy and the liquid–liquid phase transition in the indium depleted part of the melt.
Неизотермическое течение газа в эллиптическом канале с внутренним круговым цилиндрическим элементом в свободномолекулярном режиме
Authors: Гермидер О.В. , Попов В.Н.
Published: December 2018

AbstractThe linearized problem of free-molecular gas flow in a long elliptic channel with a circular cylindrical element inside has been solved in the kinetic approximation. The flow in the channel is caused by temperature and pressure drops between its ends. The Boltzmann kinetic equation for collisionless gas has been used as a basic equation, and the boundary condition has been set in terms of the diffuse reflection model. The distribution of the mass velocity of the gas over the cross section of the channel has been obtained. The mass flow rate of the gas in the channel versus the temperature and pressure drops between its ends has been calculated. It has been found that the mass flow of the gas substantially depends on the radius of the inner cylinder.
Регистрация собственного вращения пылевых частиц в условиях ВЧ разряда индукционного типа
Authors: Карасев В.Ю. , Дзлиева Е.С. , Павлов С.И. , Новиков Л.А. , Машек И.Ч.
Published: December 2018

AbstractSelf-rotation (rotation about the center of mass) of dust particles in a magnetic field has been investigated. The angular velocity of self-rotation in a dust trap produced by an rf discharge has been measured for the first time. It has been discovered that the angular velocity is independent of magnetic induction up to 700 G in spite of the action of ion drag. In addition, the dependence of self-rotation velocity on gas pressure in the discharge when the particles are in the dust trap and on power deposited into the discharge has been measured for the first time. Experimental data correlate well with the developed model of dust particle self-rotation, which appears to maintain the stationary charge of the dust particle.
Возможности магнитного псевдорезонанса в изучении тонких ферромагнитных пленок с одноосной магнитной анизотропией
Authors: Демидов В.В. , Мефёд А.Е.
Published: December 2018

AbstractPossibilities of magnetic pseudoresonance (a non-resonance peak of magnetic susceptibility) were studied and compared with the ferromagnetic resonance (FMR) in measuring the parameters of thin ferromagnetic films with in-plane uniaxial magnetic anisotropy. The measurements were conducted with two characteristic samples of ferromagnetic films showing this effect. A Q -meter operating at a frequency near 300 MHz (for pseudoresonance) and a standard X -band magnetic resonance spectrometer (for FMR) were used. The Q -meter working at 300 MHz was shown to detect reliably the magnetic pseudoresonance in both epitaxial and polycrystalline films. It was found that the accuracy of determination of the magnetic anisotropy field and orientation of the easy magnetization axis provided by the pseudoresonance method is as good as with FMR, and in some cases the pseudoresonance method gives additional information.
Волновая природа поперечного эффекта Доплера и аномалии красного" и синего" смещения частоты электромагнитной волны движущегося источника излучения
Authors: Куклин А.В. , Куклин В.А.
Published: December 2018

AbstractThe electromagnetic field of a harmonic oscillator moving at a constant velocity has been analyzed. The expression for calculating the Doppler frequency shift at relativistic velocities of its motion is derived using the classical electromagnetic theory. It is shown that the transverse Doppler effect is a special case and also differs from zero in the wave theory. With an increasing velocity of the radiation source, the “red” frequency shift in an electromagnetic wave prevails over the “blue” shift more strongly. The noncontradictory nature of the proposed model relative to the well-known experimental data has been demonstrated.
Models of semiconductor quantum dots blinking based on spectral diffusion -=SUP=-*-=/SUP=-
Authors: Busov V.K. , Frantsuzov P.A.
Published: December 2018

AbstractThree models of single colloidal quantum dot emission fluctuations (blinking) based on spectral diffusion were considered analytically and numerically. It was shown that the only one of them, namely the Frantsuzov and Marcus model reproduces the key properties of the phenomenon. The other two models, the Diffusion-Controlled Electron Transfer (DCET) model and the Extended DCET model predict that after an initial blinking period, most of the QDs should become permanently bright or permanently dark which is significantly different from the experimentally observed behavior.
Учет влияния полей остаточных деформаций в современных физико-механических технологиях обработки конструкционных материалов
Authors: Кульчин Ю.Н. , Рагозина В.Е. , Дудко О.В.
Published: December 2018

AbstractA strict determination of the mechanisms of redistribution of previously accumulated irreversible strains as a result of additional elastic shock actions on the material is given for a nonlinear gradient model of large elastic–plastic strain. It is shown that this redistribution is limited by rigid transport and rotation of the plastic strain tensor. Formulas for a change in the initial components of the plastic strain tensor in elastic waves are derived. It is shown that the preliminary plastic field affects the dynamics of further reversible strain as one of the factors of formation of the initial quasi-static elastic field, which cannot be obtained in a purely elastic process.
Генератор плазмы с магнитно-вихревой стабилизацией и возможности его применения
Authors: Чурилов Г.Н. , Николаев Н.С. , Шичалин К.В. , Лопатин В.А.
Published: December 2018

AbstractA design of a plasma generator, the parameters of the resulting plasma, and the possibilities of its use for the synthesis of nanosized powders and optical emission spectroscopy are described. The device operation is based on the arc discharge of alternating current (66 kHz) in an argon jet between water-cooled metal electrodes. The discharge is stabilized by a flow of isolating gas (helium, nitrogen, air) and an axial magnetic field. The gas flow is fed tangentially to the discharge axis. The plasma between the electrodes has the shape of a cylinder remote from the chamber walls. The temperature and electron concentration in the cross section of the plasma cylinder vary along the radius and take the maximum and minimum values.
Электронно-эмиссионные свойства полупроводниковых субмикронных частиц
Authors: Гавриков М.В. , Жуков Н.Д. , Мосияш Д.С. , Хазанов А.А.
Published: December 2018

AbstractThe electron emission properties of submicron Si, GaAs, InSb, and InAs semiconductor particles and their multigrain structures have been investigated. The effect of the properties of nanoparticles on the field and secondary emissions has been established. A scanning electron microscopy-based method for measuring the secondary emission coefficient of semiconductors has been proposed. The effect of photoexcitation of the multigrain structure of submicron semiconductor particles on their secondary emission properties has been investigated by the vacuum triode method.
Взаимодействие газовых струй со сверхзвуковым поперечным потоком в канале
Authors: Голубев М.П. , Гольдфельд М.А.
Published: December 2018

AbstractThe results of a study on the hydrogen sound jets penetrating a cross flow at Mach 4 and their influence on the flow structure in a backward facing step (BFS) channel are presented. It is shown that jet penetration in a channel differs from penetration in a free stream and cannot be predicted using the well-known empirical relations. Due to the influence of the reflected shock wave and its interaction with the wall boundary layer, an increase in the hydrogen jet-to-crossflow momentum flux ratio leads to a change in the flow structure and pressure distribution in the jet injection area and downstream after the backward facing BFS.
Действие продуктов плазмы поверхностного барьерного разряда на прорастание злаков
Authors: Лазукин А.В. , Грабельных О.И. , Сердюков Ю.А. , Побежимова Т.П. , Нурминский В.Н. , Корсукова А.В. , Кривов С.А.
Published: December 2018

AbstractSeeds of cereals (spring and winter wheat, winter triticale, and winter rye) were treated with products of surface barrier discharge plasma for various times (30 and 60 min) on exposure outside the zone of active discharge. It is established that the seeds of cereals tested differently responded to this treatment, which is probably related to the degree of their stability under oxidative stress conditions. The response to treatment of the seeds occurring outside the active discharge zone is manifested at greater times of exposure than in the case of direct treatment of seeds by the surface discharge products.
Эволюция многостенных углеродных нанотрубок и гибридных наноструктур на их основе в процессе получения алюмоматричных композиционных материалов
Authors: Аборкин А.В. , Хорьков К.С. , Объедков А.М. , Кремлев К.В. , Изобелло А.Ю. , Волочко А.Т. , Алымов М.И.
Published: December 2018

AbstractComposite materials based on AMg2 aluminum alloy reinforced by additions of 0.05 wt % multiwalled carbon nanotubes (MWCNTs) or Al/MWCNT hybrid nanostructures have been obtained by powder metallurgy techniques. The evolution of MWCNTs and Al/MWCNT hybrid nanostructures at various stages of powder composite material formation has been studied by Raman spectroscopy. It is established that Al/MWCNT hybrid filler is subjected to lower damage and less favors the formation of Al_4C_3 phase during isothermal consolidation stage as compared to the case of nonmodified MWNTs.
Высокоэффективное преобразование лазерного излучения высокой плотности
Authors: Паньчак А.Н. , Покровский П.В. , Малевский Д.А. , Ларионов В.Р. , Шварц М.З.
Published: December 2018

AbstractAlGaAs/GaAs-based semiconductor photovoltaic converters (PVCs) of laser radiation, capable of operating at an illuminance up to 9 kW/cm^2 with retained isothermal state have been studied. This state was confirmed by the logarithmic shape of dependences of the open-circuit voltage on the power density of incident laser radiation. At maximum illuminance, the open-circuit voltage level was close to 1.33 V. It is shown that the proposed PVCs can provide laser radiation conversion at an 840-nm wavelength with efficiency above 51% at an incident radiation power density of 2.5 kW/cm^2.
Откольная прочность и динамический предел текучести гафния
Authors: Молодец А.М. , Савиных А.С. , Голышев А.А. , Гаркушин Г.В.
Published: December 2018

AbstractThe spall strength and dynamic yield stress of polycrystalline hafnium have been measured in a series of plane-wave shock loading experiments using flat sample–transparent window composite targets, with the transparent windows representing polymethyl methacrylate or lithium fluoride plates arranged on the rear side of a hafnium sample. The front side of the target was subjected to shock impact of a copper striker, the rear surface velocity was measured, and the sample was recovered for subsequent metallographic examination. The results were also used for evaluation of the accuracy of spall strength measurements and the analysis of features of high-rate deformation of hafnium.
Тягово-энергетические характеристики плазменных актуаторов при различных давлениях
Authors: Бочарников В.М. , Трифанов И.В. , Голуб В.В.
Published: December 2018

AbstractWe have studied the pressure dependences of the long thrust and specific power thrust of synthetic jets generated by dielectric barrier discharge of a symmetric actuator at reduced pressures. Decreasing pressure leads to increase in the length of the plasma sheet. The thrust of synthetic jets reaches a maximum at a certain pressure dependent on the actuator geometry.
Математическое моделирование возникновения и развития кавитации в турбулентном потоке жидкости в симметричном канале
Authors: Ибен У. , Махнов А.В. , Шмидт А.А.
Published: December 2018

AbstractThe process of cavitation inception and development in turbulent flow of a hydrocarbon fuel in a square channel under the action of a large constant pressure difference has been studied. It is established that the flow in this system is substantially unsteady and, despite the fact that the channel possesses both vertical and horizontal symmetry, the structure of cavitating flow is significantly asymmetric. This circumstance plays an important role in analysis of the fundamental problem of cavitation inception and development in a wide range of practical problems. The mathematical modeling of turbulent cavitating flows was based on the Navier–Stokes equations supplemented by the equation of state of a barotropic medium. Simulations were performed using a modified algorithm of the open-source computational fluid dynamics toolbox OpenFOAM. Comparison of the results of test simulations to available experimental data showed the appropriateness and efficiency of the proposed algorithm.
Эффект обратной релаксации и структура пористых электродов суперконденсаторов
Authors: Компан М.Е. , Малышкин В.Г.
Published: December 2018

AbstractThe phenomenon of voltage self-recovery in supercapacitors of various types has been studied. It has been established that parameters of this process are related to characteristics of the porous structure of capacitor electrodes. An approach is proposed that allows the fraction of capacitance active in the pulsed process of given duration to be determined in experiment.
Сложная динамика неавтономного осциллятора с управляемой фазой внешнего воздействия
Authors: Селезнев Е.П. , Станкевич Н.В.
Published: December 2018

AbstractThe dynamics of a non-autonomous oscillator in which the phase of external force linearly depends on a dynamic variable has been investigated. This control of the external-drive phase leads to the formation of a hierarchy of various periodic and chaotic oscillations. The structure of the space of control parameters has been studied. It is established that dynamics of the system exhibits oscillatory regimes analogous to those of a non-autonomous oscillator with potential in the form of a periodic function.
BİR MOBİLYA İŞLETMESİNİN MONTAJ HATTINDA ERGONOMİK RİSK ANALİZİ
Authors: Çiçek Ece , Kazanç Nurselin , Kahya Emin
Published: December 2018

Uygunsuz çalışma duruşları sırt, kol, boyun, bilek vb. kas sistemi
rahatsızlıklarına neden olmaktadır. Bu rahatsızlıklar fiziksel güç gerektiren
işleri yapan çalışanlarda sıklıkla görülmektedir. Çalışanlarda meydana çıkan
rahatsızlıklar üretimdeki verimliliğin de düşmesine yol açmaktadır. Mobilya
sektörü de fiziksel zorlanmaların yoğun olduğu bir sektör olup çalışanlar aşırı
yüklenmelere maruz kalmakta bu nedenle kas iskelet sistemi rahatsızlıkları
meydana gelmektedir. Bu çalışmada, çalışan duruşlarını analiz etmek için REBA,
OWAS ve QEC yöntemleri ile montaj hattındaki işlemlerin risk değerlendirmeleri
yapılmıştır. İşlem sırasında gözlem yapılıp REBA gözlem formu doldurularak REBA
skoru bulunmuştur. OWAS için işlemler video kaydına alınmıştır. 15 saniyelik
OWAS değerleri bulunup tüm bu değerlerin ortalaması alınmıştır. QEC skoru hem
gözlemci hem de çalışan tarafından doldurulan form ile bulunmuştur. Süngerleme,
kumaşı iskelete giydirme, kolları iskelete zımbalama ve gövdeyi iskelete
zımbalama olmak üzere dört işlemin risk skorları bulunmuştur. En yüksek risk
skoru süngerleme işleminde bulunmuştur. Skorların yüksek çıktığı işlemler için
iyileştirme önerileri geliştirilmiştir.
Oral cancer imaging: the principles of interpretation on dental radiograph, CT, CBCT, MRI, and USG
Authors: Widyaningrum Rini , Faisal Arif , Mitrayana M. , Mudjosemedi Munakhir , Agustina Dewi -
Published: December 2018

Oral cancer is a malignant neoplasia on the lip and oral cavity. It is generally late-detected, locally invasive, and it has a high propensity for cervical lymph node metastases as well as blood-borne distant metastases. Diagnostic imaging for oral cancer is generally performed using conventional radiography, Cone Beam Computed Tomography (CBCT), Computed Tomography (CT), ultrasonography (USG), Magnetic Resonance Imaging (MRI), Positron Emission Tomography (PET), Single-Photon Emission Computed Tomography (SPECT), and bone scintigraphy. This review provides a general overview of oral cancer imaging and basic principles of interpretation for oral cancer using several imaging modalities. The selection of imaging modalities for oral cancer must be based upon clinical condition, availability of imaging modalities, and cost effectivity. Despite the limited availability of modern imaging modalities in Indonesia, understanding on the major concept of various oral cancer imaging and its interpretation are certainly required by the dentists. Imaging and its interpretation are required to assist the diagnosis and determine the most appropriate treatment plan. Thus, the survival rate can be improved.
Mengartikulasikan Relasi Musik dengan Radikalisme
Authors: Raditya Michael HB
Published: December 2018

This article deals with relation between music and radicalism. In fact, religion and politics are more related with radicalism. In art perspective, visual art was more related with radicalism rather than music position—especially in Indonesia. In Indonesia music had minor relation with radicalism. According this fact, i would like to explore about music with radicalism with link with several songs, genres, and moda of production—especially relate with definition of radicalisme was rooted movement. The result that i got so far is songs, genres, and mode of production relate with counter-culture. Through counter-culture, radicalism movement that used by music can be running with a different portion, inter alia: change old system to new system, and deal with daily activity as a counter. This result made me more brightly to articulate that pathern and logic of radicalism not only about practical measured, but relate with ideology things.
Kaum Muda, Intoleransi, dan Radikalisme Agama
Authors: Qodir Zuly
Published: December 2018

Youth, Intolerance, and Radicalism are serious problems facing Indonesia and other countries including in the Middle East. This phenomenon has sprung up over the last five years with various events that have surfaced. There are many reasons for the emergence of radicalism among young people and intolerance. However, there are several alternatives also to reduce the movement of intolerance and radicalism of youth. Religious movements that come from mass organizations such as Muhammadiyah and NU can be expected to reduce it. The most phenomenal phenomenon is the emergence of ISIS Islamic state of Iraq and Syria with various violent activities in Iraq and Syria affecting religious life in Indonesia. The movement of intolerance and radicalism arises because of the lazy tolerance. The essay below wants to reflect on the continuous occurrence of terrorist acts of terrorism radicalism in our country. The following essays are based largely on literature reviews written on the basis of reports or by others, as well as observations from the authors
Pencinta Alam Sebagai Bentuk Peran Pemuda Di Tengah Tantangan Kehidupan Kota
Authors: Anuraga Jalu Lintang Yogiswara
Published: December 2018

The important role of youth as an agent of change in the society is questioned. Seeing the modern society that has new challenge which is the capitalist society culture impacts in alienation. The capitalist culture that occurs in urban society is considered as a change that gives impact at youth role and it becomes the dominant culture. Seeing this phenomena, this article will answer how youth do the counter culture toward the dominant culture. This dominant culture is seen as a culture that can alienate the youth from their surrounding and this will weaken the youth role in society. Counter culture is defined as a culture that can counter the dominant culture in the society. While alienantion is defined as someone’s clutter from certain thing that alienates him or her from himself or herself, others, or the surrounding where she or he lives like in fromm concept. This article will present the life pattern of nature lovers. This article will begin by describing the life of nature lovers from how it is formed, the daily life of nature lovers and their value or view as a form counter culture toward the dominant culture which is the capitalist culture that alienates youth from their environment. This article is written based on descriptive analysis of interview, observation, and literature review in nature lovers organisation in university level which is often called Mapala.
Pemuda dan Resistensi: Sebuah Refleksi Kritis
Authors: Sutopo Oki Rahadianto
Published: December 2018

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Use of Natural Graphite for an Energy Storage Device
Authors: Dilhani P. D. D , Perera K. S. , Vidanapathirana K. P. , Vignarooban K.
Published: December 2018

Ever growing high concerns over use of safe and low cost devices have provided a substantial attention on natural materials. As such natural graphite which has been deeply integrated into numerous applications is being received a consideration to be used for electrochemical devices. The main objective of this study is to explore the suitability of Sri Lankan natural graphite to serve in electrochemical double layer capacitors (EDLCs). In order to uplift the safety of the device, a gel polymer electrolyte was used instead of a liquid electrolyte. Two identical electrodes were consisted with Sri Lankan natural graphite as the active material and polyvinylidenefluoride as the binder. To prepare the electrolyte, polyvinylidenefluoride co hexafluoropropylene and magnesium perchlorate were used as the polymer and the salt respectively. Cyclic voltammetry test results show that single electrode specific capacitance is depending on the potential window. The percentage reduction of capacitance with continuous cycling was about 28%. Nyquist plot of EDLC further confirm the capacitive nature at low frequency.
ANALYSIS OF BISPHENOL A IN INDONESIAN CANNED FOOD BY GAS CHROMATOGRAPHY
Authors: Suryadi Herman , Rasyid Amiratul Haq , . Harmita
Published: December 2018

Objective: This study aimed to design and optimize a gas chromatography-flame ionization detection (GC-FID) method to determine the bisphenol A (BPA)content in Indonesian canned food samples.Methods: GC with Hewlett-Packard-1 capillary columns (length, 30 m; inside diameter, 0.25 mm; and film thickness, 0.25 μm) was used with a columntemperature of 150°C that was programmed to increase by 10°C/min to 260°C. Injector and detector temperatures were 280 and 300°C, respectively,the gas flow rate was 1.0 mL/min, and injection volume was 3.0 μL. Three types of canned food samples were prepared by ethyl acetate extraction andstored under four different conditions (4–8°C, 25–30°C, 40°C for 30 min, and 40°C for 60 min) to determine BPA migration levels.Results: Method validation (system compatibility, selectivity, calibration curve linearity, accuracy, and precision) was acceptable for BPAconcentrations ranging from 2 to 15 μg/mL, with a coefficient of correlation of 0.99983. The limits of detection and quantitation were 0.287 and0.956 μg/mL, respectively. Only one canned food sample type (Group A) showed BPA contamination under all storage conditions and exceeded therecommended guidelines for daily ingestion.Conclusion: The optimized GC-FID method was selective and relatively sensitive in the detection and quantitation of BPA. Furthermore, higherstorage temperatures and durations increased the level of BPA migration into food.
ANTITHROMBOTIC ACTIVITY OF TAMARINDUS INDICA L. IN MICE
Authors: Saputri Fadlina Chany , Avatara Chavella , Rachmawati Dian
Published: December 2018

Objective: This study aimed to investigate the antithrombotic activity of Tamarindus indica L. extract (TIE) in mouse models (in vivo).Methods: TIE was orally administered to mice at three different doses for 7 days. TIE-treated mice were used in two experiments of antithromboticactivity: An examination of bleeding time following tail cutting and an examination of survival rate after collagen-epinephrine-inducedthromboembolism. The TIE groups were observed after 7 days of treatment and compared to an aspirin-treated group and a control group.Results: Treatment with TIE led to a significant increase in bleeding time compared with that in the control group. TIE treatment also protected micefrom thromboembolic death, significantly increasing survival rates in a dose-dependent manner.Conclusion: TIE has the potential as an antithrombotic agent against platelet thromboembolism.
COST-EFFECTIVENESS ANALYSIS OF CEFTRIAXONE AND NON-CEFTRIAXONE ON TYPHOID FEVER PATIENTS
Authors: Purbandini Citra Sari , Sauriasari Rani
Published: December 2018

Objective: This study aimed to evaluate the cost-effectiveness of ceftriaxone and non-ceftriaxone therapies in patients with typhoid fever.Methods: The applied method was a cost-effectiveness analysis. Data were retrospectively collected, and sampling was performed using totalsampling based on medical records and hospital information systems. Subjects were limited to patients diagnosed with typhoid fever and usingceftriaxone or non-ceftriaxone antibiotics. A total of 15 patients were investigated, comprising 10 patients on ceftriaxone and five patients using nonceftriaxoneantibiotics. Effectiveness was evaluated by the length of hospitalization. The cost was a median of total costs, consisting of the cost of thedrug, concomitant drugs, medical equipment, laboratory tests, doctor, health-care services, and hospitalization.Results: The results showed the effectiveness of ceftriaxone (3.80±0.789 days) did not differ with the non-ceftriaxone drugs (3.40±1.635 days).However, the total cost of ceftriaxone (Rp 1,929,355) was less than that of non-ceftriaxone antibiotics (Rp 2,787,003). The average cost-effectivenessratio of ceftriaxone group (Rp 507,725/effectiveness) was lower compared to the non-ceftriaxone (Rp 819,707/effectiveness).Conclusions: This study results showed that ceftriaxone was more cost-effective than non-ceftriaxone antibiotics.
EFFECT OF DIFFERENT ANTICOAGULANTS IN DETERMINING METFORMIN HYDROCHLORIDE LEVELS IN HUMAN PLASMA USING HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY
Authors: Harahap Yahdiana , Marsudi Lista Roro , . Sunarsih
Published: December 2018

Objective: This study aimed to develop and validate an analytical method and to determine the effect of different anticoagulants for analyzingmetformin HCl level in human plasma.Methods: Analysis was performed with high-performance liquid chromatography method using a photodiode array detector set at 234 nm, a C18SunFire™ column (5 μm, 250 mm×4.6 mm), a temperature of 40°C, a mobile phase comprising 10 mM sodium dodecyl sulfate and 10 mM phosphatebuffer in water-acetonitrile (60:40 v/v) at pH 7.0, with a flow rate of 1.0 mL/min, and atorvastatin calcium as the internal standard. Plasmaextraction was performed through protein precipitation using human plasma (300 μL) and acetonitrile (600 μL; 1:2 v/v). The method was linear at aconcentration range of 20.0–5000.0 ng/mL, with r>0.9998.Results: The stability and recovery of metformin HCl in human plasma were not different between citrate with ethylenediaminetetraacetic acid(EDTA) and heparin with EDTA as anticoagulants. However, a significant difference in the peak area response ratio (p<0.05) was observed betweenthe three anticoagulants.Conclusion: The validation results for the three types of plasma anticoagulants met validation requirements based on the European MedicinesAgency bioanalytical guidelines of 2011 for accuracy and precision, selectivity, calibration curve linearity, dilution integrity, carry-over, and stability.
EFFECT OF VARIATIONS OF BETA VULGARIS EXTRACTS ON MASKING THE BITTER TASTE OF MOMORDICA CHARANTIA EXTRACT SYRUP
Authors: . Sutriyo , Iswandana Raditya , Widiya Elisa Nur
Published: December 2018

Objective: This study aimed to obtain a formula with an optimal sweetener concentration of beet extract that can cover the bitter taste of bitter melonand confer optimal physical properties on the syrup.Methods: The syrups were prepared by mixing bitter melon extract, sucrose, beet extract, sorbitol, sodium benzoate, strawberry essence, anddemineralized water. The control formula and formulas 1, 2, and 3 contained beet extract at concentrations of 0% and 10%, 15%, and 20%, respectively.All formulas were evaluated to determine their physical properties, stability, and bitterness. The bitterness was tested on 30 respondents, with databeing analyzed using Wilcoxon’s test on SPSS software.Results and Conclusion: Formula 3 with 20% beet extract was identified as the best formula for masking bitter taste because it had a significantlybetter average value than the other formulas (p<0.05) and the highest bitterless taste percentage (86.67%), with physical properties of a brownishblackcolor, odor of mixture of strawberry and dominant beet, a sweet and dominant beet taste, pH 5.46, and specific gravity of 1.228 g/mL.