bluuebunny/crossref_metadata_2025_split huggingface dataset:
Universal programmable portable measurement device for diagnostics and monitoring of hydraulic and pneumatic equipment
Authors: Dindorf R , Wos P 
Published: December 2021

Abstract
The paper presents a new universal programmable portable measuring device (PMD) intended for the diagnostic and monitoring of hydraulic and pneumatic equipment. PMD offers a simple, complete, and efficient remote monitoring and diagnostic solution for hydraulic and pneumatic equipment. PMD is designed for measurement, recording, and processing of data as well as graphical visualization of registered results on a test stand or in the operating site of hydraulic and pneumatic equipment. PMD is designed to measure parameters used in servicing, repairing, monitoring, and diagnosing hydraulic and pneumatic equipment. Usually, fluidic characteristic quantities (pressure, flow rate, temperature), mechanical quantities (position, linear speed, rotational speed, force, torque, shaft power), and electrical quantities (voltage, current, power) is measured. PMD with WiFi communication is adopted to transfer measurement data via the Industry Internet of Things (IIoT) technology to remote online monitoring and diagnostic hydraulic and pneumatic equipment. Sensors, controllers, and other devices are connected to the computing gateway via their respective protocols.
Radio signal time delay estimation performance of TDOA/SSR-based source localization systems
Authors: Ivanov S I , Kuptsov V D , Fedotov A A , Badenko V L 
Published: December 2021

Abstract
The work is devoted to the development of an algorithm for the optimal Radio Signal Time Delay Estimation Performance in passive location systems of stationary targets based on the TDOA method in two-dimensional space. A realistic model of the radio signal at the input of sensors (base station receivers) is considered, considering the random power value as a function of the distance to the source. The optimal estimate is based on the strategy of maximum posterior probability density. The calculation of the statistical characteristics of the obtained estimate of the radio signal delay time is carried out. The Bayesian Cramér - Rao lower bound (BCRLB) of the latency estimate is calculated. It is shown that the use of a priori statistical information on the path loss of a radio signal model can improve the accuracy of estimating the propagation delay time of a radio signal in TDOA/SSR-Based Source Localization Systems.
Forced electric heating use for guaranteed quality of concrete clutching, restoring reinforced concrete structures
Authors: Molodin V , Leonovich S , Shpanko S 
Published: December 2021

Abstract
Concrete adhesion is a decisive factor in restoring performance of reinforced concrete structures. Peeling of the repair concrete is observed, during the structures restoring that have been in operation for a long time in aggressive conditions. The studies of the carbon dioxide effect on cement stone showed crystalline framework destruction of the material and a decrease in its cohesive strength. This has a significant effect on grip. The use of forced heating of the repair mixture when it is placed in contact with the restored structure leads to the temperature gradients that enhance thermal diffusion and thus the impregnation of the damaged cement stone with the liquid phase from the repair concrete mixture. Crystallizing, the cement dissolution products form a new crystalline structure in the damaged cement stone, which enhances its cohesive strength and binds the repair concrete to the intact concrete structure of the restored structure, ensuring adhesion quality.
The use of sorption and excess sorption isotherm in the mathematical modeling of the unsteady-state heat and humidity regime of the building envelope
Authors: Zhou Z , Zubarev K P 
Published: December 2021

Abstract
In the given article the development of the moisture transfer equation based on the theory of moisture potential is considered. The task of combined heat and moisture transfer is one of the most complicated tasks in the building thermal physics field. The classical equations of moisture transfer by K.F. Fokin representing the transfer of moisture under the action of partial transfer potentials - the gradient of the partial pressure of water vapor and the gradient of humidity F - are listed. The possibility of uniform accounting of the combined water vapor transfer on the basis of the moisture potential F is described. The sorption isotherm for aerated concrete is constructed in accordance with the experiment carried out in a desiccator with an aqueous solution of sulfuric acid. A new equation of moisture transfer which takes into account moistening with vaporous moisture in the sorption zone of moisture and liquid moisture in the excess sorption zone of moisture is derived. In order to simplify the work with the obtained equation a new value of the relative potential capacity is introduced. A graph construction of sorption and excess sorption isotherms which are obtained using an analytical expression for the relative potential capacity is proposed. In the sorption zone of humidification the sorption and excess sorption isotherms coincide with the classical sorption isotherm. Meanwhile, in the excess sorption zone of humidification the sorption and excess sorption isotherms depend on temperature.
Numerical study of forced convective heat exchange in spherical fillings of regular structure: determination of heat characteristics
Authors: Koroleva A , Frantsuzov M , Antanenkova I 
Published: December 2021

Abstract
The required operation of a heat exchanger with spherical filling depends on determining the heat characteristic of the porous medium. Using most existing dependencies to determine the heat-exchange coefficient in a porous medium gives contradictory results. This paper proposes a calculation method to determine heat characteristics of a porous medium (namely, spherical filling) using numerical modeling. This issue is addressed in a 3D setting using the RANS equation systemk- ε RNG, a turbulence model, energy and state equations for gas flows through the porous medium represented as regular packed beds of three types. Two modes are considered, which differ in the working medium type and heat exchange process direction. Modeling is done to determine the following parameters; Reh=100…4·104, Prwb=0.57… 0.919, ε=0.2595… 0.4764, Twb=300… 1900 K, Tw=300… 1900 K. The analysis results of the influence of the temperature factor, porosity, and heat physical properties of the working medium on the heat exchange are represented. Heat characteristics are given for each case scenario: about 360 reference points are obtained. A modified type of criterial dependencyNusf(Reh) is proposed and approximation coefficients are determined.
Digital technological model of heat exchange control in an air heat pump in a low-rise building
Authors: Fedosov S V , Fedoseev V N , Emelin V A , Loginova S A 
Published: December 2021

Abstract
The use of air source heat pumps together with other renewable energy devices and highly efficient heating equipment together with digital control systems is a promising European trend that continues to grow in the face of rising prices for traditional energy sources. The article presents a number of technical energy-saving solutions, such as a mixing chamber for HVH, built into the heat supply system and the use of a supply and exhaust ventilation system, in which the principle of recuperation is incorporated. A digital modular-functional-structural diagram of heat generation of a heat carrier from the environment is proposed. Relying on the energy efficiency of the circuit design with an electric boiler, a buffer tank and a patented mixing chamber, the authors achieve a rationally controlled heat and air exchange of a combined heat pump system for heating premises. Automation of the joint work of rationally selected elements of the heat pump air system is one of the Smart Home technologies that improve the efficiency of heat supply, create comfortable living conditions and safety through digitalization of the control algorithm for this system.
Digital sovereignty of Russia based on the element base of topological nanostructures on a solid surface induced by laser radiation
Authors: Arakelian S M , Kucherik A O , Bukharov D N , Khudaiberganov T A 
Published: December 2021

Abstract
The purpose of this work is to develop breakthrough technologies and technology transfer in the field of topological photonics, nanoelectronics and new materials with controlled functional and structural characteristics using a unique line of the Vladimir State University (VlSU) equipment (within the framework of the corresponding created structures - Centre of collective use, Center for Structural Materials Science and Breakthrough Engineering Physical Technologies, Center for Engineering Competencies, etc.) for carrying out work in the direction of high-tech industrial sectors. The report deals with the following issues on this topic: basic physical and scientific and technical principles, methods for measuring laser-induced structures on the surface of materials in real time, obtaining surface nanostructures on solid materials by deposition from colloidal systems using a two-stage scheme with laser ablation, modeling macroscopic quantum states in the functional properties of laser-induced 4d-topological nanoclusters in thin films on a solid surface and experimental demonstration of the work of real prototypes.
Model the structure of nano-modified aluminium alloy with the addition of boron carbide
Authors: Bukharov D N , Arakelyan S M , Prusov E S , Panfilov A A , Samyshkin V D , Skryabin I O , Osipov A V 
Published: December 2021

Abstract
Nanocomposite thin films based on Al-Si alloy with the addition of boron carbide (B4C) particles are widely used in various fields of modern high-tech industry. For their synthesis, the method of laser nanomodification was used, which made it possible to obtain samples with a dendritic structure. The parameters of laser radiation were selected on the basis of preliminary modeling of the temperature field of the system. To describe the ensemble of nanodendrites on the surface, we used modeling of their structure in variable phase field and temperature for the initial stages, as well as the approximation of diffusion-limited aggregation and fractal Brownian motion for subsequent time intervals. The model showed satisfactory adequacy, estimated on the basis of the ratio of fractal dimensions of experimental and model structures. The proposed approach can be useful for predicting the structure of nanomodified aluminum alloys with various additions.
Laser synthesis of a weakly agglomerated aluminium oxide nanopowder doped with terbium and ytterbium
Authors: Kharkova A V , Kochuev D A , Davidov N N 
Published: December 2021

Abstract
This paper describes a method of femtosecond laser synthesis of nanoparticles of powdered aluminum oxide doped with terbium and ytterbium was developed. The formation of a plasma torch of nanoparticles of a powdery material is carried out as a result of ablation under the influence of a sharply focused beam of femtosecond laser radiation with an intensity of 108- 1010W/m2. The radiation source is the TETA-10 laser system. SEM images of the obtained nanopowders are presented. Spherical nanoparticles of narrow particle size distribution in the range from 5 to 15 nm was synthesized with the ability to control the size of nanoparticles by purposefully changing the parameters and characteristics of pulsed radiation in the treatment area. The design of a specialized high-voltage electrostatic precipitator up to 25 kV for capturing ablated nanoparticles in an electron cloud of increased concentration was developed.
Nanostructuring of the tungsten surface under the action of femtosecond laser radiation
Authors: Khorkov K S , Kochuev D A , Chernikov A S , Chkalov R V , Arakelian S M 
Published: December 2021

Abstract
In the paper, we show the possibility of nanostructured tungsten surface by femtosecond laser radiation. The features of the LIPPS formation are also shown. The dependence of the formation of the structuring region on the number of femtosecond laser pulses is shown. Based on the analysis of experimental data, the formation mechanisms of nanostructures are discussed.
The laser radiation parameters control method based on the digital video system registration
Authors: Shepelev A , Antipov A , Putilov A , Osipov A , Arakelian S 
Published: December 2021

Abstract
The paper describes a method of a beam radiation parameters analysis. Such analysis bases on the laser beam registration in the plane of a diffusely reflecting screen and digital processing of the registered image. The algorithm of the laser beam spatial parameters determination is presented and realized programmatically. The experiment was carried out using a digital high-speed video system and a solid-state pulsed periodic laser based on a Cr3+: BeAl2O4 alexandrite crystal. A comparison of the proposed method with a standardized method based on the registration of radiation by a matrix photodetector is presented. The development of measure methods of the laser radiation parameters is necessary due to the appearance of new sources of laser radiation and their use in various applications.
Formation of highly concentrated heterogeneous flows during plasma deposition of powder materials
Authors: Kuzmin V I , Gulyaev I P , Sergachev D V , Palagushkin B V , Lebedev O Y , Menzilova M G 
Published: December 2021

Abstract
Most industrial installations for plasma spraying of powder materials are equipped by nozzles with local (radial) powder input into the thermal plasma jet generated by the plasma torch. Such a local input of the sprayed material significantly perturbs the flow of the plasma jet, and causes dispersion of temperature and velocity of the particles of the sprayed powder materials. This work presents study of high-temperature heterogeneous flows generated by the electric arc plasma torch PNK - 50 with an annular (circular) input unit of powder materials with their gas-dynamic focusing developed at ITAM SB RAS. The performed experiments proved that the annular injection of a powder material guarantees the stable formation of a highly concentrated flow of thermal plasma with particles of sprayed powder materials. The comparative analysis clearly showed the advantages of annular powder input unit with its gas-dynamic focusing. In contrast to local point injection, axisymmetric annular injection practically does not disturb the jet of thermal plasma and, thus, significantly increases the efficiency of interphase exchange.
Effect of aging on low-temperature crack resistance and water stability of polyester fiber asphalt mixture
Authors: Wu Jinrong , Niu Zhaoxu , Chen Haiyan 
Published: December 2021

AbstractIn order to study the influence of different aging conditions on the low-temperature crack resistance and water stability of polyester fiber asphalt mixture. Prepare standard Marshall specimens of asphalt mixture with 0.4% polyester fiber doping, and carry out water immersion Marshall test and low temperature splitting test through indoor asphalt mortar aging, asphalt mixture short-term aging and long-term aging. The results show that: under the three aging conditions, when the water immersion and low temperature time are fixed, with the increase of the aging degree, the water stability and low temperature crack resistance of the asphalt mixture decrease. When the immersion time is 2 h, the stability of asphalt mortar aging and short-term aging decreases by 6.0% and 11.8%, respectively, compared with unaging, but the long-term aging is only 3.6% lower than the short-term aging. When the temperature is −5 °C, the split tensile strength of asphalt mortar aged and short-term aged increases by 4.24% and 14.35%, respectively, compared with unaging, while long-term aging only increases 4.18% compared with short-term aging. This indicates that the short-term aging condition has the most significant effect on the water stability and low-temperature crack resistance of polyester fiber asphalt mixes. At the same time, this study established a regression equation between the test temperature and the low temperature evaluation index through quadratic fitting (the correlation coefficient is 0.960–0.998), and the regression relationship can be used to estimate the low temperature evaluation index at different test temperatures.
ALDPI: adaptively learning importance of multi-scale topologies and multi-modality similarities for drug–protein interaction prediction
Authors: Hu Kaimiao , Cui Hui , Zhang Tiangang , Sun Chang , Xuan Ping 
Published: December 2021

Abstract

Motivation
Effective computational methods to predict drug–protein interactions (DPIs) are vital for drug discovery in reducing the time and cost of drug development. Recent DPI prediction methods mainly exploit graph data composed of multiple kinds of connections among drugs and proteins. Each node in the graph usually has topological structures with multiple scales formed by its first-order neighbors and multi-order neighbors. However, most of the previous methods do not consider the topological structures of multi-order neighbors. In addition, deep integration of the multi-modality similarities of drugs and proteins is also a challenging task.

Results
We propose a model called ALDPI to adaptively learn the multi-scale topologies and multi-modality similarities with various significance levels. We first construct a drug–protein heterogeneous graph, which is composed of the interactions and the similarities with multiple modalities among drugs and proteins. An adaptive graph learning module is then designed to learn important kinds of connections in heterogeneous graph and generate new topology graphs. A module based on graph convolutional autoencoders is established to learn multiple representations, which imply the node attributes and multiple-scale topologies composed of one-order and multi-order neighbors, respectively. We also design an attention mechanism at neighbor topology level to distinguish the importance of these representations. Finally, since each similarity modality has its specific features, we construct a multi-layer convolutional neural network-based module to learn and fuse multi-modality features to obtain the attribute representation of each drug–protein node pair. Comprehensive experimental results show ALDPI’s superior performance over six state-of-the-art methods. The results of recall rates of top-ranked candidates and case studies on five drugs further demonstrate the ability of ALDPI to discover potential drug-related protein candidates.

Contact
zhang@hlju.edu.cn
Vulvovaginal Candidiasis: A Review of the Evidence for the 2021 Centers for Disease Control and Prevention of Sexually Transmitted Infections Treatment Guidelines
Authors: Nyirjesy Paul , Brookhart Carolyn , Lazenby Gweneth , Schwebke Jane , Sobel Jack D 
Published: December 2021

AbstractBackgroundVulvovaginal candidiasis (VVC) is a common cause of vulvovaginal itching and discharge. This article discusses the latest CDC STI Treatment Guidelines for VVC.MethodsA literature search of relevant topics was performed, and a team of experts was convened to discuss (1) diagnosis/testing modalities; treatment of (2) uncomplicated VVC , (3) complicated VVC, and (4) VVC caused by non-albicans yeast; (5) alternative treatment regimens; (6) susceptibility testing of yeast; Special Populations: (7) pregnancy and (8) HIV and VVC.ResultsYeast culture remains the gold standard for diagnoses. Newer molecular assays have been developed for the diagnosis of VVC and perform well. Azole antifungals remain the treatment of choice for uncomplicated VVC. Two new drugs, TOL-463 and recently FDA-approved ibrexafungerp, appeared promising in clinical trials. For recurrent VVC, oteseconazole, not yet commercially available, may represent a new option. For non-albicans yeast infections in symptomatic patients, boric acid appears useful. No evidence supports the use of alternative treatments, including probiotics. Fluconazole during pregnancy may be associated with spontaneous abortion and craniofacial and heart defects. In women with HIV infection, lower CD4+ T-cell counts are associated with increased rates of VVC, and VVC is associated with increased viral shedding. Treatment measures in women with HIV infection are identical to those women without HIV infection.ConclusionsThere has been significant new knowledge generated about VVC since the 2015 CDC Guidelines which have led to changing recommendations.
Readiness of cardiosurgical patients for digital rehabilitation programs
Authors: Pomeshkina S , Zvereva T N , Krupyanko E V , Pomeshkina E E , Barbarash O L 
Published: December 2021

Abstract

Introduction
To date, the methods of remote rehabilitation using the mobile applications for smartphones are increasingly introduced for a particular category of cardiac patients worldwide. Such programs are of a particular relevance due to a higher accessibility for a patient which is provided by the flexibility of the patients' home training schedule and the possibility of constant communication with a cardiologist and rehabilitation therapist.

Purpose
To study the readiness of the patients to participate in the remote digital cardiac rehabilitation program.

Methods
265 patients (180 (68%) men and 85 (32%) women) undergone a cardiac surgery and staying at the cardiac surgery department were examined. The mean age of the patients was 67±11.9 years. 157 (59%) patients undergone coronary artery bypass grafting (CABG), 73 (34%) patients – heart valves surgery, 13 (5%) patients – simultaneous CABG and heart valves surgery and 5 (2%) – hybrid CABG with carotid endarterectomy.
Prior to the discharge from the first inpatient rehabilitation stage (10–12 days after cardiac surgery), all the patients underwent a survey. The survey was conducted using a designed questionnaire including 5 questions, the answers to which determined the patients' awareness of the necessity and the structure of postoperative remote rehabilitation using the digital technologies, as well as the willingness and the possibility to participate in these programs.

Results
Analyzing the results obtained from the survey it turned out that the majority of patients (258 (97%)) believe that they need cardiac rehabilitation. However, only 86 (32%) patients answered positively to the question about their readiness to participate in remote digital rehabilitation programs. When analyzing the reasons for such a low readiness of patients to participate in remote programs it turned out that 98 (37%) patients didn't have smartphones. 10 (4%) patients despite the presence of a smartphone, refused to participate referring to their inability to use considering themselves incapable of learning it. 71 (27%) patients simply refused claiming that they don't understand the necessity for remote cardiac rehabilitation.

Conclusions
Thus, only a small number of the patients (32%) are ready to participate in remote digital programs of cardiac rehabilitation. A considerable amount of the patients (37%) can't afford to participate in a remote rehabilitation program only due to the absence of the smartphone and 27% of the patients are not ready to participate in a remote cardiac rehabilitation program not understanding the importance of distance cardiac rehabilitation for them.

Funding Acknowledgement
Type of funding sources: None.