bluuebunny/crossref_metadata_2025_split huggingface dataset:
Energetic activation of the processes of abrasive diamond metal processing
Authors: Berdichevsky E G 
Published: December 2019

Abstract
The possibility of energetic activation of the processes of abrasive diamond metal processing is considered. Emphasis is placed on thermal activation of coolants and lubricants and on electrical activation of the grinding zone. It is shown that under certain conditions, the external energy supply can significantly improve the performance of abrasive-diamond processing. The role of the electrode potential during electrical activation is disclosed. Physical aspects of energetic activation are discussed. The prospects of other schemes of electric activation are demonstrated.
Pre-investment quantitative assessment of the geological risk of the development of coal deposits
Authors: Efremenkov A B , Rogova T B , Shaklein S V , Efremenkov V A 
Published: December 2019

Abstract
The article analyzes the main goals, objectives, and directions of modeling and optimization of technological processes and construction industry. The basic tasks and factors of organizational and technological modeling of the construction industry, as well as their influence on the change in production volumes, labor productivity growth and the efficiency of construction enterprises have been determined. The main directions of optimization of technological processes and construction are formulated on the basis of modernization and development of production and technological capabilities of construction enterprises.
Regeneration and utilization of solvents after the process of physical and chemical cleaning of metal optics
Authors: Filin S A , Rogalin V E , Kaplunov I A 
Published: December 2019

Abstract
The possibility of application of a semipermeable polymer membrane in total with the method of rectification purification for the repeated use of freon-114
B
2 and detergent compositions based on it for cleaning metal optics in a closed technological cycle while ensuring the environmental cleanliness of the process and saving solvents has been identified and justified. The investigated adsorption method is effective for cleaning freon-114
B
2 from rosin resins contaminats: among adsorbents (activated carbon, silica gel, anion exchange resin IA-I, silica gel S-80). Silica gel S-80 has the highest adsorption capacity (up to 50 mg / l). It has been shown that regeneration of freon-114
B
2 with the help of a polymer semipermeable membrane after its use for cleaning metal optics allows to reduce the amount of impurities present in it by at least 2 orders of magnitude. Moreover, organic molecules, that have long surfactant chains, oils, fats of organic and mineral origin are almost completely separated from the regenerated solvent.
The influence of the thermomechanical conditions and the geometric parameters of TiNi alloy force elements on the deformation processes of two-way memory effects
Authors: Khlopkov E A , Belousov N N , Makarova T A , Brovkina Ya Yu , Mikhailov A O , Vyunenko Yu N 
Published: December 2019

Abstract
The paper presents data of the two-way memory effect deformation processes dependencies of the various TiNi force elements from different temperature and force modes.
Justification of rejection values of defect characteristics in ultrasonic testing of welded joints
Authors: Konovalov N N , Petrov A A 
Published: December 2019

Abstract
Probabilistic models of substantiation of rejection values of the measured characteristics of defects during ultrasonic testing of welded joints using phased antenna arrays that reduce possible test errors are considered. It is shown that the most important for usage are the reliability indicators of non-destructive testing, taking into account the sub-rejection. The recommended application areas for evaluating the reliability D* criteria of ultrasonic testing using alternative and quantitative indicators for selecting rejection values of measured defect characteristics have been determined.
Structural-analytical mesomechanics of a solid body with reversible martensitic transformations
Authors: Malinin V G , Malinin G V , Malinina N A , Malukhina O A 
Published: December 2019

Abstract
In the given article the structurally-analytical mesomechanics for environments with martensitic mechanism of mass transfer is developed. Wave equations are derived to describe the deformation process initiated by martensitic transformations at meso and macro-scale levels.
Equivalent parameters of thermal comfort of the room
Authors: Ryabova T V , Sulin A B , Nikitin A A , Emelyanov A L , Bordashev K A 
Published: December 2019

Abstract
Modern approaches to the substantiation of comfort parameters of the microclimate and rooms are mainly focused on the requirements of State Standart ГOCT P ИCO 7730 and ASHRAE Standard 55. The article describes a method for calculating the dependencies of the required air temperature on mobility, mobility and radiation temperature difference at various levels of metabolism and insulation of clothing for three classes comfort.
For each class of comfort pre-built tables of iso-comfort microclimatic parameters, which are calculated for different levels of human metabolism and clothing characteristics. The obtained values from the tables of iso-comfort microclimatic parameters are substituted into the empirically derived equation for calculating the equivalent temperature. The results in the form of the equivalent comfortable temperature are approximated as a function of the level of metabolism and the characteristics of the clothes, as a result of which generalized calculated expressions of the parameter of the equivalent comfortable temperature are obtained. The results in the form of the equivalent comfortable temperature are approximated as a function of the level of metabolism and the characteristics of the clothes, as a result of which generalized calculated expressions of the parameter of the equivalent comfortable temperature are obtained. Thus, six data arrays with thermal comfort parameters for rooms of three classes are summarized by six calculated algebraic expressions. The obtained calculated expressions of equivalent comfortable temperature can be used in the design of air conditioning systems and in programming automatic climate control systems.
Technology of electrodepositing and properties of indium-containing chromium alloys
Authors: Tikhonov A A , Filippov D A , Arendateleva S I , Perepelitsa T I 
Published: December 2019

Abstract
The experimental results of the influence of electrolyte composition and electrodepositing regimes on the properties of galvanic gradient indium-containing composite coatings based on chromium are presented. The dependences of micro hardness, coefficient of friction and wear resistance of coatings on electrodepositing regimes and electrolyte composition were studied. The effect of coating thickness on properties of gradient coatings was investigated. It is shown that the gradient alloy chromium – indium – molybdenum – vanadium – boron nitride (elbor), obtained by electrolytic deposition, has a high wear resistance and is far superior to the wear resistance of the coating obtained from standard chromium sulphate electrolyte.
Reokinetics of urethane epoxy oligomers hardening and formation of cold curing adhesive compositions based on them
Authors: Volkova E R , Slobodinuk A I , Savchuk A I , Pogoreltsev E V , Strelnikov V N 
Published: December 2019

Abstract
In order to obtain polymeric binders for cold cure structural adhesives based on urethane epoxy oligomers, cycloaliphatic amines such as aminoethyl piperazine and isophorone diamine are used as hardeners. The reokinetic features of the curing process of polytetraurethanhydroxyl compositions at temperature of 25 ± 1 ° C were investigated, and influence regularities of the reactive oligomers composition on the dynamics of viscosity increase and the viability time of the compositions were established. The rheological parameters of the hardening process of the investigated compositions were determined. The assessment of adhesion strength for detachment of cold-curing adhesive joints formed on the basis of EUO is presented. The proposed compositions can be used for bonding ceramic linings operating under extreme conditions of the Arctic.
Client-server technologies at the enterprises of Industry 4.0
Authors: Zakoldaev D A , Gurjanov A V , Shukalov A V , Zharinov I O 
Published: December 2019

Abstract
The task is to project the distributed architecture of calculation net for a digital and smart factory of Industry 4.0. The calculation net architecture defines the calculation resources components and their interaction to organize designer project activity or to manufacture a set of items in a serial plant. You may use in Industry 4.0 factory calculation net architecture client and server technologies. All factory technological equipment is classified by the type of the operation being completed: thin client, thick client, universal client and server equipment. Thin client of cyber and physical production is the simplest communication device with installed software which functions as a terminal and being used by the operator. Thick client of cyber and physical production is a complete production machine (test equipment) which is capable to work automatically by the programed algorithm. Universal client of cyber and physical production combines the properties of thin and thick clients. A cyber and physical system is a universal client example of the smart factory calculation net. Digital factory net thin client is a communication device with software which is used to control the modes of digital models virtual tests. Digital factory net thick client is a work station to conduct digital models virtual tests with your own calculation resources. Digital factory net universal client is a PC which is a part of the designer automatic work place and which is used to develop and create construction, program and technological documentation and also item digital models. Server equipment is a terminal server, data server and application server to exchange the information in multi-level hierarchy calculation net. Some schemes of digital and smart factories calculation net architecture are given.
Numerical Prediction of Sand Erosion in Elbows
Authors: Saeid Nawaf H. , Rosli Roslynna 
Published: December 2019

Abstract
In the present article, turbulent flow of crude oil and sand particles in piping system with a 90° elbow is analysed using computational fluid dynamics simulations. The flow of the crude oil is modelled as continuous fluid which is govern by the continuity and Reynold-averaged Navier–Stokes equations. The Discrete phase model is used for sand particle flow. The governing parameters considered in the present study are: the inlet velocity, spherical sand particle size and sand mass flow rate. The maximum erosion rate is found on the outer surface of the elbow where the sand and fluid impinging the surface before changing the flow direction. It is found that the erosion rate is increasing with the increase of the inlet velocity of the crude oil. The numerical results show that the large sand particles with constant sand flow rate causing less erosion rate than those of smaller diameter. The results show also that the increase of the sand mass flow rate leads to the increase of the erosion rate.
Preparation and Evaluation of Mefenamic Acid Transdermal Patches Prepared from Pressure Sensitive Adhesive
Authors: Suksaeree Jirapornchai , Sampaopan Yupaporn , Pichayakorn Wiwat , Kalkornsurapranee Ekwipoo 
Published: December 2019

Abstract
The pressure sensitive adhesive is interesting to apply in pharmaceutical and medical products. It composed of STR 5L block rubber which has high uniformity and very low impurity. Thus, it was used to prepare the transdermal patches for mefenamic acid delivery. The mefenamic acid powder was loaded in pure STR 5L block rubber and pressure sensitive adhesive. The pressure sensitive adhesive was the STR 5L block rubber mixed with hydroxyethyl cellulose and white oil which were used as tackifier and softener, respectively. The preparation of mefenamic acid loaded in transdermal patches were crushed by melt blending technique with two-roll mill machine. The mefenamic acid could be mixed into pure STR 5L block rubber and pressure sensitive adhesive to be the homogeneous transdermal patches. The percentages of moisture uptake and swelling ratio were less than 5% and 15%, respectively. The mefenamic acid was entrapped in the range of 75-90%. However, the content of mefenamic acid from transdermal patches was a low cumulative release (less than 60% of cumulative drug release). Therefore, this preparation of mefenamic acid loaded in transdermal patches might be developed to increase the release of mefenamic acid from transdermal patches in further study.
Optimal Sensor Placement of Health Management for Thermal Protection System on RLV
Authors: Xuan Jianlin , Zhou Wenhui , Song Yue 
Published: December 2019

Abstract
When a Reusable Launch Vehicle (RLV) travels through the atmosphere there should be strong aero heating around it, so a Thermal Protection System (TPS) would be used to protect the vehicle structures from aero thermal ablation. However, the TPS structure may fail more frequently than normal vehicle structures because of the severe environment and load conditions, while a TPS failure can even lead to a catastrophic breakdown of vehicle structures. To keep the RLV safe, the TPS must be monitored real-time. To learn the heat transfer inside a ceramic TPS tile finite element models are built, and computation made with them indicates that temperature monitoring and frequency monitoring of the TPS structure should be effectual for fault detection. Health management for TPS is one of the key technologies for space vehicle. The paper puts forward a method that analyze and valuation the system states by monitoring the key function index sign of TPS. The concept of health management for Thermal Protection System of space shuttle and the principles of health monitoring are introduced. The principles of sensor selection and layout optimization method for TPS Health Management are discussed.
Research on Turbine Rotor Fault Diagnosis Based on CPSO-BBO Optimization SVM
Authors: Shi Zhibiao , Dong Wenzhuo 
Published: December 2019

Abstract
In order to improve the recognition accuracy and efficiency of the turbine rotor fault diagnosis, a fault diagnosis method based on CPSO-BBO (chaos particle swarm optimization biogeography based optimization) algorithm was proposed to optimize SVM (support vector machine). Firstly, four common faults states of turbine rotors were simulated by ZT-3 rotor test-bench to obtain fault data. Secondly, CEEMD (complementary ensemble empirical mode decomposition) is used to decompose the rotor vibration signal, and the more effective intrinsic mode function (IMF) is screened by combining the variance contribution rate, and the corresponding PE (permutation entropy) is calculated as the fault characteristic value. After that, chaos theory and PSO (particle swarm optimization) algorithm are combined into the theory of BBO (biogeography based optimization) to obtain CPSO-BBO algorithm, which is used to optimize SVM to obtain the optimal parameters of the diagnostic model. Finally, the fault identification is studied by using the acquired fault data.
Experimental Study on the Stiffness and Shape Layout of Flapping Wing
Authors: Yang Wenqing , Xu Jianhua , Xuan Jianlin 
Published: December 2019

Abstract
Flapping-wing Micro Air Vehicle (FMAV) is a kind of bionic air vehicle, which looks like natural flying creatures and flies by flapping-wings only. Now, there is an upsurge of relative research about FMAV, and one focus research domain is to develop a flapping-wing with high aerodynamic performance. The wind-tunnel experiment is one of the main research manner, which can be used to test and control many parameters with high accuracy, like force, torque, flapping angle, frequency, power, etc. Based on the wind-tunnel system and inspired by birds, we mainly study the effects of stiffness and shape layout of the flapping wing, and get some conclusions. And this work may set up a good fundamental for further experiment about developing wing with high efficiency.
Researching rolling resistance of the wheeled forestry tractor at skidding
Authors: Klubnichkin Vladislav , Klubnichkin Evgeny , Makarov Vladimir , Podrubalov Maxim 
Published: December 2019

Abstract
Off-road performance improvement remains one of the main problems in designing wheeled dragging and forestry tractors. Improvement of off-road performance of the dragging and forestry tractors is closely related to the general problem of wheeled vehicles’ off-road performance, however it features a number of specific aspects which require specialized research to be made.
During tree skidding by a wheeled tractor, vertical load on a double-reduction axle greatly changes that is linked to additional load by a roundwood bundle and redistributed in-motion load. The above in-motion redistribution of load and driving moments along the axles greatly affects the vehicle’s off-road performance. While skidding, the increased load on a wheel leads to increased specific pressure, track depth and rolling resistance.
This work employs simplified tire calculation model used as a base to determine relationship between load and deformation. Calculation is made successively for each elementary tire section that allows for finding diagram of pressure distribution in the contact longitudinal plane and researching rolling resistance related to rutting and hysteresis losses in the tire material. Further experimental research of the driving wheel and wheel system motion allowed for elaborated theoretical analysis and helped to justify parameters the forestry tractor wheels.
The following tasks were set during this work:
1. To make efforts to elaborate approximated method for estimating relative elongation of the rolling resistance depending on wheel parameters, vertical load and air pressure. The method is based on calculation of contact pressure distribution on the basis of simplified tire model
2. To conduct experimental research of rolling resistance for one wheel and wheel set of a tractor in the leading movement mode with due regard to tire tangential deformation.
3. To study aspects of a process of rolling resistance of a forestry tractor during tree skidding in summer time. To run comparative draw tests of a forestry tractor equipped with tires of variable size.
4. To find out possibilities to reduce rolling resistance basing on theoretical and experimental researches.
Optimization of the internal damping rubber elements of the roller wheel of tracked system
Authors: Korostelev S A , Verbilov A F 
Published: December 2019

Abstract
The article presents the formulation and solution of the problem of optimization of the internal damping rubber elements of the roller wheel of tracked system. The optimal design search is based on the results of calculating the stress-strain state of the rubber element caused by the assembly of the roller and operational loads. As an objective function, the specific energy of deformation of the rubber was chosen. The geometric parameters of the rubber element of the roller wheel in the initial state and after installation in the structure are taken as variable parameters. Explicit and functional constraints in the form of inequations are imposed on the variable parameters. As a result of solving the optimal design problem, the shape and design parameters of the internal damping rubber elements of the track roller of the tracked system were obtained, which made it possible to reduce the specific strain energy during radial loading by 1.85 times
Assessment of the technical condition of the units of mobile robotechnical complexes based on the approaches of nonlinear dynamics and artificial intelligence
Authors: Kabaldin Yu.G. , Shatagin D. A. , Sidorenkov D. A. , Zhelonkin M.V. , Anosov M. S. 
Published: December 2019

Abstract
Neural network algorithms for monitoring and diagnosing the technical condition of parts of the MRC drive axle are considered. The formalized task is a comprehensive assessment of the technical condition in the neural network basis. An engineering technique is proposed that can be applied at the stages of bench tests of critical components and assemblies.
Engine-and-transmission installation frequency analysis of a wheeled forestry tractor
Authors: Churakov A.V. , Sokolova V.A. , Markov V.A. , Parfenopulo G.K. , Kalyashov V.A. 
Published: December 2019

Abstract
The article provides a frequency analysis of an engine-and-transmission installation of a wheeled forestry tractor. It can be used for machine-building enterprises of the forest complex. During the wheeled forestry tractors operation in the engine-and-transmission installation, resonance phenomena may occur when the internal frequencies of the system coincide with the external disturbance. The solution of the problem was carried out on the basis of the developed equivalent dynamic circuit, which was described by the differential equations of torsional vibration. As a result of solving these equations, the values of the engine-and-transmission installation natural frequencies were obtained. A comparative analysis of the frequencies obtained with regard to the damping properties of the system has been made, and possible resonance zones have been identified. The information obtained allows selecting the optimal damping indicators for the wheeled forestry tractor engine-and- transmission installation operation in a resonant-free mode.
Sound Generation under Rotary-Screw Propulsion Unit Base Cylinder Bending
Authors: Erasov I. A. , Kuklina I.G. , Molev Y.I. , Mokerov D.S. , Skrebneva T.G. 
Published: December 2019

Abstract
Theoretical results of sound generation parameters under rotary-screw propulsion unit base cylinder bending are dealt with in this article. Base cylinder parameters impact such as diameter, wall thickness, length as well as such vehicle movement parameters impact as speed and mass on noise level appearing at rotary-screw propulsion unit passing a single obstacle are analyzed in the paper. Sound vibrations onset conditions are shown. Research results allow one to conclude that a considerable sound level generated by rotary-screw propulsion units can appear only when the vehicle mass to rotor diameter ratio is greater than 25. The model produced and the results obtained might be useful when designing cross-country vehicles.
Outbreak of an Uncommon Rifampin-resistant blaNDM-1Citrobacter amalonaticus Strain in a Digestive Rehabilitation Center: The Putative Role of Rifaximin
Authors: Royer Guilhem , Fourreau Fréderic , Gomart Camille , Maurand Audrey , Hacquin Bruno , Ducellier David , Cizeau Florence , Lo Stéphane , Cordonnier-Jourdin Catherine , Mercier-Darty Mélanie , Decousser Jean-Winoc 
Published: December 2019

Abstract
We describe a sudden 2-week outbreak due to a blaNDM-1Citrobacter amalonaticus strain in a 22-bed digestive rehabilitation center. Three of the 5 colonized patients received long-term rifaximin treatment to prevent hepatic encephalopathy. The strains were genotypically identical, phenotypically resistant to rifampin, and harbored arr-3, a rifampin adenosine diphosphate-ribosyl transferase.
Are we using the right tools to manage variation, errors and omissions?
Authors: Arya Dinesh K 
Published: December 2019

AbstractIn all processes, there is an inherent risk of variability to occur. In the process of delivering healthcare, variability can occur as a result of an error or omission and compromise the quality of care or affect the safety of the health care consumer. Even though incident reporting, root cause analysis, use of checklists and other quality improvement methods are in wide-spread use, we may not be using these tools appropriately and therefore we are losing an opportunity to improve the quality of care.