bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development of visual display and data transmission system for patients with chronic disorders of consciousness
Authors: Degtiareva S A , Shiryaev D S , Andreev Y S , Polukhin I S , Kondratieva E A , Smirnova I G , Bougrov V E 
Published: December 2021

Abstract
The monitoring is integral part for patients with chronic disorders, as such cases require serious attention to save their life and predict recovery. Physiological signs such as heart rate, hemodynamic, temperature, saturation are collected from biomedical sensors to bedside monitors that medical staff could detect unexpected life-threatening conditions being around the patients. However, it is a tough job to being stuck at monitor for every person. Furthermore, such continuous supervision may lead to difficulties due to human error. Thus there is a need to capture, display all physiological changes visually and give a medical emergency about health conditions when they are out of the normal range. The main objective is the development of the optoelectronic system for visual monitoring and data transmission of patients in a coma by optical wireless communication.
Investigation of the dynamic parameters of electroluminescence in different parts of the spectrum in local regions of the light-emitting heterostructure
Authors: Frolov I V , Radaev O A , Sergeev V A 
Published: December 2021

Abstract
A method for measuring the distribution of the differential charge carriers lifetime over energy levels in the local regions of a light-emitting heterostructure is presented. The method has been tested on commercial green InGaN-based LEDs. It has been determined that with an increase in the energy level (with decreasing wavelength), the charge carriers lifetime decreases. It is shown that the relative inhomogeneity of the distribution of the charge carriers lifetimes in local regions of the die in the long-wavelength part of the electroluminescence spectrum is higher than in the short-wavelength part of the spectrum.
Processing and characterization of GaP nanowires encapsulated into a PDMS large-scale membrane for flexible optoelectronics
Authors: Mukhangali S M , Neplokh V , Kochetkov F M , Fedorov V V , Nasibulin A G , Makarov S V , Islamova R M , Mukhin I S 
Published: December 2021

Abstract
This paper presents the methods of fabricating arrays of semiconductor III-V nanowires transferred into a flexible polydimethylsiloxane membrane. Molecular beam epitaxy was used to synthesize GaP nanowires. The synthesized nanowire arrays were encapsulated into a silicone membrane by a heavy load swinging-bucket centrifuge. For optoelectronic applications, the nanowire/polydimethylsiloxane membranes were contacted with single-walled carbon nanotubes, peeled from the substrate, then the second carbon nanotubes contact was formed. For optical experiments, the nanowire/polydimethylsiloxane membranes were bonded to supporting polydimethylsiloxane films by oxygen plasma treatment, and then easily released from the substrate by unsticking. The obtained membranes have a high practical potential in flexible optoelectronics.
Influence of dielectric overlayers on self-heating of a microdisk laser
Authors: Scherbak S A , Moiseev E I , Melnichenko I A , Guseva Ju A , Maximov M V , Lihachev A I , Kryzhanovskaya N V , Lipovskii A A , Zhukov A E 
Published: December 2021

Abstract
We studied experimentally and numerically self-heating of a microdisk laser developed in the AlGaInAs material system and covered with dielectric layers. By experiments, we found that planarization of the microlaser with SU-8 photoresist significantly (almost, 2-fold) decreases the microlaser thermal resistance. Calculations demonstrate that a downward heat flux through the substrate to the heat sink is a dominant way of heat dissipation, and upward convection is much less relevant. Also, the calculations showed that covering microlaser with a TiO2 layer barely affects microdisk temperature but decreases heat localization in the structure.
Simulation optical parameters nanowire structures of various shapes.
Authors: Shishkin I A , Shishkina D A , Latukhina N V 
Published: December 2021

Abstract
In this study, three-dimensional fragments of nanowires structures were simulated in which the thread cross sections had a square, triangular and round shape. The theoretical data were compared with the experimental results, described in detail in [1]. The influence of the shape of the filaments on the theoretical course of the reflection curve is also shown.
Photovoltaic characteristics of structures with porous silicon obtained by various technological plans
Authors: Shishkina D A , Poluektova N A , Shishkin I A 
Published: December 2021

Abstract
In this work, the influence of technological parameters on the current-voltage characteristics of solar cells with porous silicon is investigated. It is shown that for photosensitive structures with a porous layer, the optimal mode is pore formation by electrochemical etching followed by diffusion. The effect of etching modes affects the character of the photosensitivity curve.
Chemical characterization of extracellular vesicles of mesenchymal stromal cells: TOF-SIMS and BCARS approach
Authors: Aybush A V , Gulin A A , Kuzoiatova A A , Gubina M V , Gostev F E , Syrchina M S , Ermakov A S , Suprunenko E A , Nadtochenko V A 
Published: December 2021

Abstract
Paracrine functions of mesenchymal stem (stromal) cells (MSCs) rely, at least partly, on membrane-bound extracellular vesicles (EVs) with rich composition of lipids, nucleic acids and signaling proteins. Elucidation the underlying chemistry could potentially lead to MSCs-free therapy. However, the secretome of MSCs (EVs’ composition) is non-static and depends on many other factors including surrounding cells and medium. Thus, the research techniques must be able to provide not only bulk but microscopy-scale data within a reasonable time frame. Two of these label-free techniques are subject of this work toward the question of chemical composition of the EVs.
Investigation of the cytotoxicity of silver nitrate and silver-cysteine nanocomplexes
Authors: Bogdanov An A , Shmakov S V , Verlov N A , Klimenko V V , Knyazev N A , Terterov I N , Bogdanov A A 
Published: December 2021

Abstract
Currently, a large number of studies are devoted to the investigation of the antitumor activity of silver nanoparticles and compounds, one of which is silver nitrate. However, silver nitrate has systemic and local toxic effects. In this work, a method was proposed for the synthesis of non-metallic complexes that do not contain toxic nitrate ions, and the cytotoxicity of silver nitrate and silver-amino acid nanocomplexes was investigated.
Application of an automated complex resistance and phase difference measuring method for rheographic studies of human cardiovascular system
Authors: Levin A I , Pecherskaya E A , Varenik Yu A , Antipenko V V , Artamonov D V , Timokhina O A 
Published: December 2021

Abstract
The structure of an automated system for measuring the complex resistance of the human body and the phase difference is proposed. It is used in the rheographic method for diagnosing human cardiovascular system diseases using a multilevel microcontroller structure. The metrological analysis of the automated system made it possible to achieve an increase in the measurement accuracy both by reducing the methodological and instrumental components of measurement errors. The relative basic measurement error does not exceed ± 0.5%.
Comparison of the effectiveness of blood transfusion and reinfusion
Authors: Pimakhina E V , Pimakhin A A , Vishnykov N V , Tolkach N M , Arsentiev S B 
Published: December 2021

Abstract
Studies by atomic force and scanning electron microscopy have shown that erythrocytes of foreign blood have morphological defects. The sequestration of foreign erythrocytes makes it difficult for the erythron to selfrepair. The actual solution to this problem is the application of the blood reinfusion technique using the Cell Saver apparatus. Transfusion of autoerythra suspension, harvested using the Cell Saver apparatus during the operation, stabilizes red blood counts in the early post-transfusion period in patients and reduces the manifestation of massive hemotransfusion syndrome. Hardware reinfusion of erythrocytes is effective and safe for massive blood loss in obstetrics. Reinfusion dictates the need for parallel correction of all blood parameters. Application of the principles of patient blood management can reduce the transfusion load, improve the quality of medical care.
Investigation of a single-photon hybrid emitting system based on NV-centers in nanodiamonds integrated with GaP NWs
Authors: Goltaev A S , Mozharov A M , Yaroshenko V V , Zuev D A , Mukhin I S 
Published: December 2021

Abstract
NV-centers can be used for quantum informatics, quantum communication and quantum sensing. The calculation of optical modes formed in a GaP cylindrical nanocavity covered by nanodiamonds has been performed. GaP nanowires have been synthesized with molecular beam epitaxy and played the role of optical resonators for light-emitting centers on the base of nanodiamonds with NV-centers. The optical characteristics of the GaP-based nanocavity were analyzed. The increase in the rate of spontaneous emission of NV-centers optically coupled to the nanocavity was estimated by the time correlated single photon counting method.
The development of an optical system for lighting various rooms with sunlight
Authors: Gureeva I M , Davydov V V , Rud V Yu 
Published: December 2021

Abstract
The necessity of using light in the room, the spectral composition of which corresponds to the spectrum of the sun for a comfortable state of a person, is justified. A passive system that does not consume energy is proposed. An energy-efficient natural light system has been developed, creating a comfortable environment for the eyes, well-being and mood of a person. An experimental study of the system operation was carried out. The dependence of the light intensity on the angle of incidence in the light guide is obtained.
Computation of optical waveguide interaction for quantum gates implementation
Authors: Lytaev A A , Popov I Yu 
Published: December 2021

Abstract
The system of two coupled optical dual-mode waveguides is considered. The coupling of the system is studied to find a circuit for building a control switch for two qubit gates. The classical coupled mode theory is applied and the exact expressions for coupling coefficients are derived. The parameters of the system for performing the desired operations are numerically computed and analysed. The system describing the influence of intermodal interactions is solved numerically. The distortions are analysed.
Solid-state phase transition in n-alkanes of different parity
Authors: Gureva S A , Borisov A K , Marikhin V A , Egorov V M 
Published: December 2021

Abstract
The kinetics of the first-order solid-state structural transition in monodisperse n-alkanes samples of tricosane C23H48 and tetracosane C24H50 was studied by DSC and FTIR spectroscopy. The initial nuclei location of the new phase was revealed. The process of crystal structure rearrangement is initiated in the interlayers between neighboring lamellar for odd tricosane, while the nanonuclei in even tetracosane arise in the crystalline lamella cores. Thus, the influence of the number evenness of carbon atoms in the n-alkanes chains on the first-order structural phase transition has been proved.
III–V nanowires for ammonia detection
Authors: Kondratev V M , Kuznetsov A S , Gridchin V O , Fedina S V , Reznik R R , Nalimova S S , Moshnikov V A , Cirlin G E , Bolshakov A D 
Published: December 2021

Abstract
Ammonia is an inorganic agent found both in nature and in the human body, which is of great interest for modern sensory applications. Here we use GaP, GaN and GaAs epitaxial nanowires as sensitive elements of the ammonia sensors fabricated via a simple protocol on the platform with golden interdigital contacts. Impedancemetry is used to study change of the device properties with addition of ammonia to the reference medium (water). GaP and GaN-based devices exhibit sufficient response to the ammonia presence with the detection limit lower than 10ppm. This work is aimed at fabrication and study of precise, technological and relatively cheap ammonia sensors compatible with a liquid medium, and motivated by the possibility of using this type of adsorption sensors in medical, environmental equipment and biological purposes.
Study of hardness and morphology of carbide coatings obtained on complex shaped steel items by electro-spark alloying
Authors: Markelova O , Koshuro V , Fomin A , Aman A , Palis S 
Published: December 2021

Abstract
The work investigated the possibility of forming carbide coatings by electrospark alloying on steel products of complex shape. It has been established that electrospark alloying at an AC current of 1.0 to 4.5 A makes it possible to form coatings of hard carbide alloy VK6 and T15K6 characterized by microhardness up to 11.5 GPa and by hardness HRA 86.6 and 81.5 with the nitial hardness of the steel product HRA 80.3.
Dependence of field-effect biosensor sensitivity on photo-induced processes in Si and its conductivity type
Authors: Kozlowski A V , Stetsyura S V 
Published: December 2021

Abstract
The effect of photoelectron processes in n-Si and p-Si on the glucose sensitivity of a capacitive field-effect biosensor based on electrolyte/oxide/semiconductor structure was investigated. We obtained that illumination of n-Si/SiO2/PEI structure during the GOx adsorption increases the glucose sensitivity by three times compare to GOx adsorption in the dark. In contrast, p-Si illumination during the GOx adsorption led to a decrease in sensor sensitivity from 2.9 mV/mM to 2.2 mV/mM. The result is explained by a change in the density of immobilized GOx molecules due to a change in the electrostatic forces of attraction under illumination and stabilization of the photo-generated charge on the surface electronic states of the Si/SiO2 and SiO2/PEI interfaces after illumination.
Study of Langmuir monolayers and Langmuir-Schaefer films based on symmetrical meso-aryl-substituted porphyrin derivative
Authors: Mironyuk V N , Al-Alwani A J K , Begletsova N N , Gavrikov M V , Kolesnikova A S , Pozharov M V , Glukhovskoy E G 
Published: December 2021

Abstract
This paper presents the results of a study of meso-aryl-substituted porphyrin Langmuir monolayers by the method of compression isotherms. Experimental data were used to plot the dependences of the compression modulus (C−1) on the specific area. Monolayers at specific surface pressure were transferred to solid substrates and investigated. The monolayers were transferred to the surface of monocrystalline silicon at surface pressures of 8, 25, and 60 mN/m and examined them by atomic force microscopy (AFM) in a semi-contact mode. It was found that with an increase in the transfer pressure, the coarsening of molecular aggregates occurs. The smallest roughness is observed for a porphyrin film formed and transferred at a pressure of 8 mN/m.
Optimizing self-rotating bristle-bots for active matter implementation with robotic swarms
Authors: Porvatov V A , Rozenblit A D , Dmitriev A A , Burmistrov O I , Petrova D A , Gritsenko G Yu , Puhtina E M , Kretov E I , Filonov D S , Souslov A , Olekhno N A 
Published: December 2021

Abstract
Robotic swarms have been recently explored as a versatile and scalable alternative to traditional microscale platforms for experimental studies of active matter. These robotic setups consist of either self-propelled or self-rotating particles. In the present paper, we develop and experimentally realize a swarm of self-rotating bristle-bots suitable for a wide range of active-matter experiments. We focus on optimizing the bristle-bot design and controlling the sliding friction between individual robots.
Structural, morphological and catalytic characteristics of nanostructured palladium catalysts
Authors: Pushankina P D , Lutsenko I S , Glazkova I S , Malkov T I , Mukhanov M A 
Published: December 2021

Abstract
A new method for the highly active palladium catalyst synthesis on the surface of a Pd-23%Ag film has been developed to increase the material activity with respect to reactions involving hydrogen. Comparison of the electrochemical experiments data of classical palladium black and a new developed nanocatalyst demonstrated a significant increase in catalytic activity in the methanol oxidation reaction (up to 17.09 μA cm−2) for electrodes modified with the latter catalyst. The reason for that is an increase in the number of localized potentially more active surface regions due to the creation of a larger number of active sites in comparison with spherical particles. Estimation of resistance to CO poisoning showed high efficiency of nanocatalysts. Chronoamperometric experiment established the long-term stability and activity of the developed catalyst and confirmed the possibility of its practical use.
Fabrication of probe tips via the FIB method for nanodiagnostics of the surface of solids by atomic force microscopy
Authors: Rodriguez D J , Kotosonova A V , Ballouk H A , Shandyba N A , Osotova O I , Kolomiytsev A S 
Published: December 2021

Abstract
In this work, we carried out an investigation of commercial atomic force microscope (AFM) probes for contact and semi-contact modes, which were modified by focused ion beam (FIB). This method was used to modify the original tip shape of silicon AFM probes, by ion-etching and ion-enhance gas deposition. we show a better performance of the FIB-modified probes in contrast with the non-modified commercial probes. These results were obtained after using both probes in semi-contact mode in a calibration grating sample.
Research Of Dynamic Characteristics Of A Three-axis Micromechanical Gyroscope-Accelerometer
Authors: Lysenko I E , Sevostyanov D Y , Kidyaev N F , Kovalev A V 
Published: December 2021

Abstract
In this paper, an original design of a micromechanical gyroscope-accelerometer is proposed. A parametrizable geometric and finite element model of a micromechanical device is presented. The dynamic characteristics of the structure are studied and the dependences of the natural oscillation frequencies on the geometric parameters of the gyroscope-accelerometer are obtained.
Entanglement of two dipole-coupled qubits induced by a thermal field of one-mode lossless cavity with Kerr medium
Authors: Zakharov R K , Bashkirov E K 
Published: December 2021

Abstract
We studied the dynamics of two qubits interacting with one-mode thermal quantum electromagnetic field of microwave cavity with Kerr medium. Using the exact solution for considered model we derived the qubit-qubit negativity for separa coherent initial qubits states. We showed that initial qubits coherencee interaction can greatly enhance the degree of qubits entanglement in the presence of the Kerr nonlinearity and dipole-dipole interactionyeven for high thermal field intensities.
Analysis of Welding Position and Current on Mechanical Properties of A36 Steel using Shield Metal Arc Welding
Authors: Vietanti F , Rajan A F , Arifin A A , Feryanto D H , Suheni  , Irawan H , Ulum M , Arif R Z , Dicky M A , Darmawan F B 
Published: December 2021

Abstract
Welding is an assembly process that is most often used in the world of construction today. Welding is often used for repairing and maintenance of all tools made of metal, both as a process for filling cracks, temporary joining, or cutting metal parts. This study aims to determine the effect of welding current and position on the tensile strength and Vickers hardness (HV). This study uses ASTM A36 steel plate as base material. The variation of welding currents used are 90A, 110A, and 130A combine with variations in positions 1G, 2G, and 3G. The electrode used in this study is E6013 electrode with a diameter of 3.2 with a butt joint connection. All of processes are performed in room temperature with a strict condition. The results are as follow, the highest Ultimate Tensile Strength is obtained at 90A current and 3G position with a value of 471.93 MPa. For the highest hardness in the Vickers test, it is also obtained at 90A current and 3G position with a value of 242.20 Kgf/mm2.
Study of Catamaran Fishing Vessel Based on Solar Energy
Authors: Santosa P I , Pranatal E 
Published: December 2021

Abstract
Projected temperature that will be felt by world community will increase 7.5°C hotter in 2070, meaning that world community is threatened to live in extreme temperatures an average of 34°C in next 50 years. This prediction can occur if a reduction in greenhouse gas emissions fails to be carried out simultaneously. On or hand, impact of soaring crude oil prices on world market has been felt by all walks of life so it is necessary to create alternative solutions to dependence of fuel to get through difficult times. In sea transportation sector, use of fuel for motorized ships is not only uneconomical but also not environmentally friendly. Dependence on fossil fuel energy has led to development of energy-efficient ship concepts that use alternative energy sources in moving ships. This is anticipated by use of solar energy in form of Electricalboats (Eb) which are applied as fishing vessels. This paper presents a study of efficient use of solar energy in Eb as a boat driver that does not utilize fuel for development of environmentally friendly fishing vessels. Technical analysis is done through testing ship model in Towing Tank n results are explored with Naval Architect ories. In conclusion, there is a potential for fuel consumption savings of up to 90% when compared to ships that only use conventional engines.
Scheduling for Prosumer Microgrid with Considering Price Based Demand Response
Authors: Suheta T , Penangsang O , Ashari M , Delfianti R 
Published: December 2021

Abstract
Unit commitment (UC) is the scheduling of power unit operating outages to meet electricity needs at a certain time with the aim of obtaining a total economical generating cost. Differences in the characteristics of each generating unit and limitations result in different scheduling combinations based on equations, and for this research, the renewable energy penetration will also be considered. Firefly Algorithm (FA) is a method to determine load requests and complete renewable energy scheduling power by using unit commitment. FA is a simple but reliable algorithm that solves optimization problems. Firefly Algorithm (FA) method obtained maximum generating power of 81,329 MW with the total cost of 827,556 $ and network losses of 3.6696 Coefficient of operating costs.
Promising Potential of Eugenol (Clove) Based Organic Membrane for Polymer Electrolyte Membrane Fuel Cell
Authors: Muliawati E C , Budianto A , Hamid A 
Published: December 2021

Abstract
Fuel cell is one of alternative method to replace fossil fuel energy. The important component of fuel cell is a membrane that used for separating cathode and anode also as a proton conductor. The purpose of this research is to produce polymer electrolyte membrane from poly (eugenol sulfonate) (PES) as polymer matrix, characterize the resulting membrane analysis using ionic properties analysis by calculating ionic conductivity using impedance spectroscopy, ion exchange capacity (IEC), solvent absorption analysis by calculating water uptake and methanol permeability, and studying mechanism Proton transport that occurs on the membrane. This research was initiated by making polymer of PES, and then fabrication and characterization of electrolytic polymer membrane. The formed membrane has an optimal proton conductivity of 0.00095 S.cm-1 with PES composition of 22% (wt).