bluuebunny/crossref_metadata_2025_split huggingface dataset:
Model of damage accumulation in heat networks
Authors: Gorshkov Alexander , Rymkevich Pavel , Vasilyev Gregory , Popov Mikhail , Kolesova Marina 
Published: September 2019

Abstract
The energy efficiency of heat networks is determined not only by heat losses, but also by the actual service life, since energy is also expended on the production of new pipes and the replacement of worn-out ones. The article describes the main characteristics of the state of the centralized heat supply system, which ensures the quality and safety of heat supply. Based on the analysis of existing models of physical wear of pipelines and equipment of heating networks, as well as the probability of their trouble-free operation, a mathematical model of damage accumulation has been proposed. The model presented in the article makes it possible to qualitatively describe the process of damage accumulation in heat networks as they are used.
Development of the measuring complex with reduced regulator
Authors: Yang Guolai , Chen Danhe , Selezneva M.S. , Neusypin K.A. 
Published: September 2019

Abstract
In this paper the measuring complex of a prospective aircraft is investigated. The accuracy of navigation definitions is improved by compensating for errors in the inertial navigation system structure. In this paper based on a reduced nonlinear regulator performed the correction of navigation information, and the state dependent coefficient (SDC) representation of the nonlinear model of inertial navigation system errors is used to obtain the regulator.
Design of magnetic navigation automatic guided vehicle system
Authors: Chen Ruwen , Hao Fei , Fei Zifan 
Published: September 2019

Abstract
Automatic Guided Vehicle is an automatic transportation robot with high universality and diversity which can drive and transport goods automatically in the established path, so it is widely used in mass production and logistics industry. In this paper, an AGV system with independent guidance and integrated network control is designed and developed. Firstly, based on the project requirements of some company and the practical problems, the basic parameters of AGV are determined, and the movement analysis of AGV is carried out to obtain its motion characteristic equation for movement control. Then the hardware of the mechanical and electronic parts of the AGV is designed. Keil uVision 5 is used for software programming. Based on the core PID algorithms, the related algorithms design of AGV paths recognition and the movement control are presented. Finally, a small AGV capable of carrying a maximum weight of 8KG is trial-produced and tested. The test data show that the position deviation can be controlled within 15mm and the maximum speed can reach 1m/s. It can communicate with the host computer in various ways. Its expansibility, stability, accuracy and real-time performance all meet the requirements of the project.
A high linearity high speed time-interleaved track and hold circuit
Authors: Huo Miao , Wang Zongmin , Zhang Tieliang , Yang Song 
Published: September 2019

Abstract
This paper presents a high linearity 4GS/s 4-way time-interleaved track and hold circuit in 65nm CMOS process. A high linearity track and hold amplifier is designed for each single channel, which utilizes open-loop structure instead of traditional closed-loop structure used in low speed applications. In the presented design, we introduced clock-boosting switches and buffers applying source degeneration technique to enable the high linearity. Meanwhile signal feedthrough is cancelled by dummy switches. The proposed design finally achieves over 52 dB signal to noise and distortion ratio (SNDR) for a 400 mV input Vpp at 4GS/s sampling rate.
An impact of harmonic currents, load levels and ambient temperatures on transformer loss of life
Authors: Chegsakul Tirada , Tayjasanant Thavatchai 
Published: September 2019

Abstract
This paper presents an analysis of thermal effect to transformer. The hottest-spot temperature of winding in transformer indicates the damage of thermal effect. The basic measured data, transformer parameters and ambient temperatures are used for estimating the hottest-spot temperature and transformer life when transformer supplies linear loads and nonlinear loads. The 50 MVA oil-immersed power transformer was investigated with field measurement data at Navanakorn4 substation in Pathum Thani. The results showed load level, harmonic current and ambient temperature are the factors which have impacts on transformer by increasing the hottest-spot temperature. The transformer life when increases the level of these factors is analyzed. When transformer supplies only linear loads, its life does not reduce from specification although load level and ambient temperature are increased. For the case of transformer supplies nonlinear load, harmonic current increases load level and transformer losses. Therefore, transformer life can be reduced when increasing the level of load, harmonic current and the ambient temperature.
Design of a low-power 12.5Gb/s 1:10 demultiplexer in 0.18μm CMOS*
Authors: Min Pan , Li Li Pang , Jia Ye Xie , Qi Qing Xu 
Published: September 2019

Abstract
A low-power 12.5Gb/s 1:10 Demultiplexer (DEMUX) without inductors is designed in 0.18μm CMOS (Complementary metal oxide semiconductor) process. The 1:10 DEMUX includes a high-speed 1:2 DEMUX, two serial low-speed 1:5 DEMUX, a 5 frequency divider and so on. The latch of the high-speed 1:2 DEMUX adopts the CML (Current Mode Logic) structure. The rest of the triggers all use E-TSPC(Extended True Single Phase Clock)structure. In the design of the 5 frequency divider, the logic gate circuit is embedded in flip-flop to improve the work frequency. The post simulated result shows that when the data rate of the input pseudorandom is 12.5Gb/s and the clock frequency is 6.25GHz at a supply voltage of 1.8V, this1:10 DEMUX can work well and the eye diagram of output data is clear. The output swing is 400mV on an external 50 Ohm load and the total power dissipation is 200mW. The die size is 0.64×0.57mm2.
A new neutrinoless double beta decay experiment: R2D2
Authors: Meregaglia Anselmo 
Published: September 2019

Abstract
The search for neutrinoless double beta decay could cast light on one critical piece missing in our knowledge i.e. the nature of the neutrino mass. Its observation is indeed the most sensitive experimental way to prove that neutrino is a Majorana particle. The observation of such a potentially rare process demands a detector with an excellent energy resolution, an extremely low radioactivity and a large mass of emitter isotope. Nowadays many techniques are pursued but none of them meets all the requirements at the same time. The goal of R2D2 is to prove that a spherical high pressure TPC could meet all the requirements and provide an ideal detector for the 0νββ decay search. In the presented talk the R2D2 goal and roadmap are discussed as well as the ongoing R&D and the future developments.
Status of ProtoDUNE Dual Phase
Authors: Dawson Jaime 
Published: September 2019

Abstract
The Deep Underground Neutrino Experiment (DUNE) will use a large liquid argon (LAr) detector consisting of four modules each with a fiducial mass of 10 ktons of LAr. One of the technology options for the far detector modules is a liquid-argon Time Projection Chamber (TPC) working in Dual Phase mode. A large demonstrator, called ProtoDUNE Dual-Phase, with a 6×6×6 m3(300t) active volume, is currently under-construction at the CERN neutrino platform. As well as being the engineering prototype of a Far Detector module, it will also demonstrate the concept of a very large Dual-Phase LAr TPC. The design of the TPC including the fabrication, testing, installation and commissioning of the various detector components is outlined.
The MicroBooNE continuous readout stream for detection of supernova neutrinos
Authors: Crespo-Anadón J I 
Published: September 2019

Abstract
Since the original detection of core-collapse supernova neutrinos in 1987, all large neutrino experiments seek to detect the neutrinos from the next nearby supernova. Among them, liquid argon time projection chambers (LArTPCs) offer a unique sensitivity to the electron neutrino flux of a supernova. However, the low energy of these events (scale of MeVs), and the fact that all large (multi-tonne) LArTPCs operating at the moment are located near the Earth’s surface, and are therefore subject to an intense cosmic ray flux, makes triggering on the supernova neutrinos very challenging. Instead, MicroBooNE has pioneered a novel approach for detecting supernova neutrinos based on a continuous readout stream and a delayed trigger generated by other neutrino detectors (the Supernova Early Warning System, or SNEWS). MicroBooNE’s data is stored temporarily for a few days, awaiting a SNEWS alert to prompt the permanent recording of the data. In order to cope with the large data rates produced by the continuous readout of the TPC and the PMT systems of MicroBooNE, FPGA-based zero-suppression algorithms have been developed.
Low energy muon neutrino reconstruction in MicroBooNE
Authors: Hourlier Adrien 
Published: September 2019

Abstract
MicroBooNE is a Liquid Argon Time Projection Chamber (LArTPC) neutrino experiment on the Booster Neutrino Beamline at the Fermi National Accelerator Laboratory, with an 85-tonne active mass. One of MicroBooNE’s primary physics goals is to investigate the excess of electron neutrino events seen by MiniBooNE in the [200-600] MeV range. MicroBooNE will constrain the intrinsic electron neutrino component of the beam by measuring the muon neutrino spectrum. Several low-energy excess analyses are taking place in parallel, using independent reconstructions and selection schemes. This paper will focus on a low-energy excess analysis that makes use of deep learning algorithms applied to the high-resolution images provided by the MicroBooNE LArTPC. We present a novel 3D event reconstruction based on computer vision tools and a stochastic search algorithm, yielding a 2.2% energy resolution for 1μ1p muon neutrino interactions in the [200-1500] MeV range.
Status of low mass WIMP detector TREX-DM
Authors: Castel J. , Cebrián S. , Dafni T. , Galán J. , Irastorza I.G. , Luzón G. , Mirallas H. , Ortiz de Solórzano A. , Peiró A. , Ruiz-Chóliz E. 
Published: September 2019

Abstract
TREX-DM (TPC Rare Event eXperiment for Dark Matter) is a high-pressure Micromegas-based TPC designed to host a few hundreds of grams of light nuclei (argon or neon) with energy thresholds potentially at the level of 0.4 keVee or below. Preliminary background studies suggest that the levels expected are of the order of 1–10 counts keV−1 kg−1 d−1, making TREX-DM competitive in the search for low mass WIMPs (<10 GeV). The experiment has been approved by the LSC (Laboratorio Subterrneo de Canfranc) and the last months have been devoted to its installation underground. Here we will report on the first commissioning phase.
Dark atom solution for puzzles of direct dark matter searches
Authors: Khlopov Maxim 
Published: September 2019

Abstract
The puzzles of direct dark matter searches can find solution in the model of dark atoms, called O-helium, containing stable -2 charged lepton-like heavy particle O
−− bound by ordinary Coulomb interaction with primordial helium 4 nuclei. Specific properties of this nuclear interacting dark matter can explain positive results of DAMA/NaI and DAMA/LIBRA experiments and negative results in cryogenic and heavy nuclei (like xenon) detectors. Astrophysical and collider probes for dark atom models as well as open questions of O-helium nuclear interaction with matter are discussed.
Calibration of measuring instruments of low absolute pressures
Authors: Antsukova A I , Gorobei V N , Liubomirov A B , Pimenova A A , Chernyshenko A A 
Published: September 2019

Abstract
The article presents some sections of the method of calibration of measuring instruments of low absolute pressures (vacuum), used in the research department of state standards in the field of pressure measurement of D. I. Mendeleyev Institute for Metrology (VNIIM), the design and composition of the reference SI used in installations of the 1st and 2nd categories are described, the procedure for determining the basic metrological characteristics and evaluation of calibration results is shown.
Mass-spectrometric leak testing of big objects via test substance leakage monitoring
Authors: Barishnikov V I , Rozanov L N , Sokolov A N , Soloviev V N 
Published: September 2019

Abstract
Mass spectrometer leak monitoring of big objects by means of the test substance leakage test is carried out on the special leak detection plants which include a test object, a leak detector or a partial pressure analyzer, check valves, vacuum meters, pumping equipment and calibrated leaks. The comparison of the flow of the test substance from the test object with the flow from calibrated leaks by means of a comparator allows detecting the leak rate and its measurement error. The article considers the characteristics of these plants and the ways how they can be determined. An example of such a plant intended for the leak detection of electronic equipment is considered.
Investigation of the influence of the parameters of a pulsed power source on the properties of a magnetron’s high-power gas discharge
Authors: Borzykin T S , Karzin V V , Ivanov D A , Lullin Z G , Reznikov R I 
Published: September 2019

Abstract
The paper presents the results of an experimental study of the emission spectra of a gas discharge during high-power impulse magnetron sputtering. The influence of the repetition frequency and duration of current pulses on the intensity of the spectral lines of various particles is shown. The parameters of the gas-discharge plasma during HiPIMS and at a direct current were also compared.
Current state and prospects of development of the reference base in the field of measurements of low absolute pressures and vacuum
Authors: Chernyshenko A A 
Published: September 2019

Abstract
The article provides information on the composition and operation principles of the complex of state primary standards in the field of absolute pressures and vacuum of D. I. Mendeleyev Institute for Metrology (VNIIM). Measures for further improvement of the complex of primary standards of the Russian Federation in the field of absolute pressures and vacuum are proposed.
Antimicrobial antiadhesive properties of nanostructured fluorocarbon films obtained under transient conditions using two-component gas mixtures
Authors: Elinson V M , Shchur P A , Deshevaya E A , Kravets L I 
Published: September 2019

Abstract
The main factors that determine the possibility of obtaining nanostructured fluorocarbon films with antimicrobial antiadhesive properties when forming them under the conditions of transient processes when using two-component gas mixtures are considered. An experimental test of the formed coatings for resistance to biodegradation was carried out.
Effect of working gas on the deposition rate of CaP coatings formed by radio frequency magnetron sputtering of a hydroxyapatite target
Authors: Fedotkin A Y , Kozelskaya A I , Tverdokhlebov S I 
Published: September 2019

Abstract
This study is dedicated to the influence of the inert working gas on the deposition rate of CaP coatings formed by radio frequency magnetron sputtering of a hydroxyapatite target in Ar, Kr and Xe. The optical emission spectra of plasma, the elemental and phase composition of the formed coatings are investigated. The deposition rates of the CaP coatings formed in Ar and Kr are approximately comparable and higher than ones formed in Xe.
Multi-cycle alloying of silumin surface layer with titanium: structure, properties
Authors: Ivanov Yu F , Lopatin I V , Petrikova E A , Rygina M E , Tolkachov O S 
Published: September 2019

Abstract
It is suggested a combined method of silumin surface treatment, including deposition of a metal film and the subsequent irradiation by an intensive pulsed electron beam in the mode of surface layer melting. The formation of the multilayered multiphase surface volume having submicro- and nanocrystalline structure is revealed. It is shown that the sizes of crystallites of the modified layer rise at increase of the distance from the treated surface.
The preliminary results of the regional key comparison COOMET.M.P-K15 in the pressure range from 0.3 mPa to 0.9 Pa
Authors: Kangi R , Elkatmis A , Gorobei V N , Chernyshenko A A 
Published: September 2019

Abstract
Within the COOMET region a regional key comparison (COOMET.M.P-K15) was carried out in order to compare national vacuum standards in the pressure range from 0.3 mPa to 0.9 Pa. The participants were D.I. Mendeleyev Institute for Metrology VNIIM (Russia) and TÜBİTAK Ulusal Metroloji Enstitüsü UME (Turkey) as pilot laboratory. The measurements were carried out from May 2017 to November 2018. Two spinning rotor gauges were used as transfer standards. The effective accommodation coefficients of the rotors had to be determined at eight target points between 0.3 mPa and 0.9 Pa. The uncertainty of the generated pressure in the calibration standard was reported as part of the calibration report by each laboratory. All additional uncertainties that were related to the transfer standard were evaluated by the pilot laboratory in order to have a uniform uncertainty analysis for both participants and in order to emphasize the importance of the reported uncertainty of the generated pressure. Preliminary results have been presented in this paper.
The X-ray method of structure and phase composition characterization of nanocomposite coatings: Hard carbon-based coatings alloyed with metals
Authors: Khrushchov M M , Avdyukhina V M , Levin I S 
Published: September 2019

Abstract
Theory and methodical peculiarities of studying the atomic structure of multiphase nanostructured coatings of arbitrary thickness deposited onto thick substrates with the method of X-ray powder diffractometry, and specific examples of phase composition and nanocomposite structure analyses of transition metal-alloyed hard carbon coatings deposited by reactive and non-reactive magnetron sputtering have been discussed.
Active vibration isolation of high-vacuum nanotechnology equipment
Authors: Mikhailov V P , Bazinenkov A M , Kazakov A V , Rotar’ A P , Ivanova D A 
Published: September 2019

Abstract
The results of experimental studies of the transients’ parameters during the operation of a high-precision drive with a closed-loop control, which at the same time is an active damper, are presented. The amplitude-frequency characteristics of the damper and the vibration-isolating platform in semi-active mode based on four dampers and four elastic suspension assemblies are also shown.
Modern trends of student training on vacuum technic and technology
Authors: Panfilov Y V , Nesterov S B , Kolesnik L L , Sidorova S V , Tsvetkov Y B 
Published: September 2019

Abstract
Creation and location of education content at a size of electronic education resource – online courses trends are analysed. Vacuum technique and technology online course structure, which consists of vacuum technique history and application fields from electronics and machinery and space technique to medicine and biology and food industry is represented. Theoretical and practice parts of the online course are described. Remote access to laboratory vacuum equipment system example of using is represented.
Forms and concentration of adsorbed oxygen on the modified surface of SnO2
Authors: Pronin I A , Yakushova N D , Karmanov A A , Averin I A , Moshnikov V A 
Published: September 2019

Abstract
Temperature dependence of oxygen concentration and forms on the undoped and doped semiconductor tin dioxide has been analyzed. It has been found that the main forms of oxygen at operation temperatures of most gas sensors are O – and 02–. When the parent oxide is doped with ions of greater Lewis force, the concentrations of all forms of surface oxygen increase. However, in all cases, defectiveness of semiconductor materials is the main contributor to gas sensitivity.
Development of a vacuum system for a compact soft X-ray source
Authors: Sergushichev K A , Smirnov A A , Samokhvalov A A , Belskiy D B , Bolshakov E P , Burtsev V A 
Published: September 2019

Abstract
The results of the development and experimental investigation of vacuum system with micromembrane element for a compact soft X-ray source and their implementation are presented.
I-V characteristics of magnetron with hot target sputtered in three-component gas mixture
Authors: Shapovalov V I , Shabalin A E 
Published: September 2019

Abstract
The discharge current-voltage characteristics of a dc magnetron with a single cold titanium target and a single hot titanium target in Ar + N2 + O2 environment were studied. Two series of experiments, in which the flow rates of nitrogen Q
N
2 and oxygen Q
o
2 played different roles, were performed. In the first series, O2 was introduced into a mixture of Ar + N2 (Q
N
2 = const and Q
o
2 = var). In the second one, N2 was introduced into a mixture of Ar + O2 (Q
N
2 = const and Q
o
2 = var). It was found that the I-V characteristics of the studied sputtering instruments measured in the current density range of 10–200 mA/cm2 differ significantly. The I-V characteristics of a magnetron with a cold target can have one maximum or jump. The I-V characteristics of a magnetron with a hot target have two maxima and one minimum in one case, and in the other case, there is only one maximum.
Thin film vacuum technologies for a production of highly-capacitive electrolytic capacitors
Authors: Sleptsov V V , Kozhitov L V , Muratov D G , Popkova A V , Savkin A V , Diteleva A O , Kozlov A P 
Published: September 2019

Abstract
The article describes the study of vacuum thin-film technology for producing electrode materials for highly-capacitive electrolytic capacitors (EC) based on a roll carbon fabric called Busofit, with a highly developed surface (more than 1000 m2/g). Laboratory technology has been developed for a metal film coating of carbon fabric used as electrode material for a production of EC cells. The electrical properties of the manufactured cell prototypes, such as specific energy and capacitance and internal resistance, were investigated. The prospects of using thin-film technologies for creating highly-capacitive ECs is shown.
Stabilization of disperse metals by nitrogen-containing tensides with different-sized molecules
Authors: Syrkov A G , Taraban V V , Kabirov V R , Silivanov M O 
Published: September 2019

Abstract
The samples based on disperse aluminum and copper with similar hydrophobic films on the surface were analyzed and compared. It was established that sorption of water vapor by copper sample decreases by 1,5 times in 145 hours, as a result of sequential layering of ammonium compounds with different-sized hydrocarbon radicals on the nitrogen atom (C1-2 and C17). Sequential layering of ammonium compound with large C17 – radical and organohydride siloxane on copper leads to the decrease of water vapor adsorption by 3 times. The common pattern for Al and Cu samples modification is that the application of two-component layers of structurally similar components favors the formation of samples, stable to oxidizing effect of water.
Method of the coating thickness and transmittance control during the film deposition process
Authors: Uhov A A , Komlev A E , Gerasimov V A , Karzin V V , Kostrin D K , Selivanov L M , Simon V A 
Published: September 2019

Abstract
A method of the coating thickness and transmittance control during the film deposition is proposed. The photometric setup on the basis of vacuum resistive evaporation installation is presented. The stages of the spectral data processing algorithm are described. The substrate holder carousel is shown as part of the installation.