bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research of heat exchange and efficiency of the arcs in the arc steel-melting furnaces with usual conveyor and loaded
Authors: Makarov A N , Okuneva V V , Pavlova Yu M 
Published: June 2019

Abstract
The analysis of heat exchange and the efficiency of the arcs in the arc steel-melting furnaces with usual conveyor and loaded. For comparison, accepted arc furnace close in power and performance. The analysis revealed that the average efficiency of arcs furnace Consteel ASF-120co 8-9% less than particle ASF-120us. Analysis of the efficiency of the arcs of electric arc furnaces allowed to explain more 8-9% lower specific energy consumption in the furnace ASF-120co compared to the same period in the furnace ASF-120us. Calculation and the analysis of efficiency of various ways of input of heat in a bathtub of metal of ASF-120co and ASF-120us furnaces is performed. The most effective way is introduction of heat by means of electric arches which efficiency is 0,69-0,78. Heating of the metal charge by means of torches of gas-oxygen torches, efficiency of the method 0,45-0,55 is less effectively carried out. Heating of a metal bath by means of oxidation of coke which is continuously entered into slag for foaming of the last is carried out with the efficiency of a way of the method 0,28-0,36.
Theoretical study of the flow of cement raw material sludge through pipes
Authors: Perelygin D N , Boichuk I P , Grinek A V , Kozlov V K 
Published: June 2019

Abstract
The flow of fluids through pipes directly depends on the physicomechanical characteristics of the material. When designing technological equipment, it is assumed that the equipment operates with the limiting physical characteristics of the liquid. The study of the flow of non-Newtonian fluids is important for the development of energy-saving methods for the cement industry. In this paper, we study the flow of cement raw sludge through rigid pipes. It is shown that when moving in pipes near the pipe walls, the sludge moves like a normal Newtonian liquid, and near the pipe it moves like a solid. This indicates that when moving through a pipe with a prolonged non-stationary effect, the sludge behaves like a normal Bingham body. The article found the flow rate, the drag coefficient, the Reynolds number, and the hydraulic resistance when the sludge moves through the pipe. In this paper, the parametric law of resistance of sludge movement in pipes is defined, which can be considered as a convenient way to calculate pressure drop. It follows from the law that, when flowing through pipes, sludge now acquires the properties of a plastic body and behaves like Bingham plastic.
Process of charge prevention with low bulk density
Authors: Sevostyanov M V , Il’ina T N , Martakov I G 
Published: June 2019

Abstract
The processes of agglomeration of dispersed materials, the relevance of their use in the utilization of man-made powdered materials. Shows the need for prehardening of the granulated charge when they are balling with balling. This is especially true for man-made materials with low bulk density, which is an obligatory stage for the formation of micro-granules, the subsequent growth and compaction of which occurs under the action of centrifugal forces. Analytical expressions for calculation of rotation frequency of the forming rolls providing necessary conditions for realization of processes of filtration of gaseous and liquid phases of a composite mix, and also for reception of microgranules of the set density at a vibro-roll method of preliminary compaction are presented. The obtained dependences are the basis for the development of a vibration-centrifugal granulator for the step-by-step process of forming technogenic dispersed materials with low bulk density.
Analysis of separator operating conditions in a technological module with vibration-centrifugal closed-cycle grinding unit for obtaining high-dispersity materials
Authors: Sevostyanov V S , Uralsky V I , Boichuk I P , Ermilov R A , Lukyanova E A 
Published: June 2019

Abstract
The demand for up-to-date building materials and components for their production is constantly growing. The purchasing of foreign analogues is often unreasonable and costly, and the domestic products not always meet the high requirements specified for them. In light of this, it is necessary to develop up-to-date knowledge-intensive technologies of producing building materials of various purpose, as well as materials and products of ceramic, varnish- and-paint, glass and other industries, the basis of which is the application of high-dispersive powders. The extensive use of fine-ground and ultrafine-ground materials resulted in designing a wide range of grinders of various types (ball, vibration, planetary, centrifugal, jet grinders etc.). In each certain unit the special conditions for grinding are created, which allows using them for processing materials with various physical and mechanical characteristics. In this work the mathematical model of closed grinding cycle with combined-action air separator is suggested. In this model the integral functions of partition in air separator have been obtained. The calculated and experimental values of the integral functions of partition in air separator have been compared.
Resource and energy-saving technologies of complex processing and utilization of technogenic materials
Authors: Shein N T , Sevostyanov V S , Obolonsky V V , Sevostyanov M V , Goryagin P Yu , Babukov V A 
Published: June 2019

Abstract
At present, a very topical environmental problem is the increase in the formation of industrial and solid municipal waste (ISMW). This leads to a deterioration of the ecological situation, and, consequently, threatens human life and health, has a detrimental effect on the biosphere as a whole. Therefore, a special place in the organization of rational use of natural resources should take a comprehensive system of measures for the processing and utilization of various man-made materials that are the product of human production. The purpose of research and development projects is the creation of resource-saving technology, technological systems and special equipment for integrated processing and recycling of various man-made materials. One of the conditions for the implementation of resource-saving technology is the use of internal energy and material resources of the processing plant.
Investigation of the kinetics of spark plasma sintering of alumina ceramics. Part 1. The initial stage of sintering
Authors: Boldin M S , Popov A A , Lantsev E A , Nokhrin A V , Chuvil’deev V N 
Published: June 2019

Abstract
The article presents the results of the investigation of the initial sintering stage of alumina. The authors determined the activation energy of shrinkage at the initial stage of sintering. The study shows that the additives do not change the kinetics of shrinkage at the initial stage of SPS.
Chrono-topographical analysis of the laws of the microheterogeneous combustion mode for the production of powders by the SHS method
Authors: Dolmatov A V 
Published: June 2019

Abstract
The paper presents the capabilities of the chrono-topographical analysis method for studying the discrete nature of the propagation of the SHS process on the scale of the combustion focy and the reaction cell. Using the approach of chrono-topographic analysis, thermal imaging studies of the microheterogeneous mode of combustion in the Ni-Al system were carried out. The regularities of the dynamics of individual foci in the SHS wave are revealed. Using chronographic maps of the SHS process, it is shown that there are two types of foci in the combustion wave, which differ in the nature of the propagation dynamics. On the scale of the reaction cells, the experiment investigated the relationship of the combustion dynamics with the moments of the formation of new reaction sites. According to the results, it was concluded that an increase in the heat deficit in microheterogeneous combustion regimes leads to an increase in the dispersion of the resulting product. The work was supported by the Russian Foundation for Basic Research in research projects no. 18-08-01475, 18-08-01152, as well as grant no. 13-01-20/28 “Leading Scientific School of Ugra State University”.
Theoretical and experimental study of cellular structures in restricted filtration combustion of porous media
Authors: Krishenik P M , Kostin S V , Ozerkovskaya N I , Shkadinsky K G 
Published: June 2019

Abstract
Infiltration-mediated combustion of a thin porous cylinder in reactive gas was studied by mathematical modeling. Gas reagent is infiltrated through an annular gap left of the side surface. In conditions of instability, the self-sustained propagation of individual cellular spots of exothermic combustion was observed. The structure of cellular waves, their dynamics, and travel direction are defined by such factors as temperature profile, pressure gradients, heat release rate, porous structure, and heat losses. Cellular combustion of Ti powder in dish was also explored experimentally and the results were compared with theoretical predictions.
Synthesis of nanopowders of Fe-C system via Flow-Levitation method and study of their properties
Authors: Kuskov M L , Zhigach A N , Leipunsky I O , Afanasenkova E S , Safronova O A , Berezkina N G , Artemov V V , Zhigalina O M , Khmelenin D N 
Published: June 2019

Abstract
Nanopowders of Fe-C system are synthesized via modified Guen-Miller Flow-Levitation method by in situ reaction of nascent iron nanoparticles with acetylene. Morphology, internal structure, chemical and phase composition are studied by electron microscopy methods, including electron diffraction and element analysis, X-ray phase analysis and CNHS chemical analysis. It is shown that depending on the parameters of the reaction with acetylene (temperature, concentration), particles composition can vary from pure iron with thin carbon coating complex composition consisting predominantly of iron carbide.
Manufacture of products from boron-containing materials by the method of combined static-pulse compaction
Authors: Mironov V A , Glushchenkov V A , Usherenko Yu S , Belyaeva I S , Stankevich P I , Irtisheva I I 
Published: June 2019

Abstract
In the production of long parts of powder materials, the magnetic pulse method of pressing is of great interest. In this paper a variant of the method combining the radial magnetic-pulse compaction of a powder in a metal shell and longitudinal drawing is considered. Samples were made of boron-containing materials.
Spark plasma sintering for high-rate diffusion welding of a UFG titanium alloy PT3V
Authors: Nokhrin A V , Boldin M S , Lantsev E A , Vostokov M M , Gryaznov M Yu , Kopylov V I , Chuvil’deev V N 
Published: June 2019

Abstract
This is the first ever paper to address the prospects of using Spark Plasma Sintering (SPS) for high-rate diffusion welding of a high-strength ultrafine-grained (UFG) α-titanium alloy Ti–5A–2V. The effect of growing diffusion welding intensity in UFG titanium alloys is also described. Welds of a UFG α-titanium alloy Ti–5Al–2V obtained with SPS are characterized by high density, strength, and corrosion resistance. The rate of weld sealing in UFG alloys is shown to be in nonmonotonic (maximum) dependence on the heating rate.
Synthesis of materials with multiscale porosity from fine powders of boron, titanium, aluminum and coarse granules of VT6 alloy
Authors: Ponomarev M A , Loryan V E 
Published: June 2019

Abstract
The material with different-scale porosity was prepared from powder mixtures with significantly different particle sizes of components by the method of self-propagating high-temperature synthesis in the combustion mode. Model mixtures were formed from coarse particles of VT6 alloy previously coated with a layer of aluminum, and fine-fraction powders of titanium and boron. Synthesis in such a system took place in stages — the fine components were the first to enter into chemical interaction in the combustion wave, with the formation of a porous boride framework. A strongly exothermic reaction between titanium and boron provided the entry of coarse particles of the VT6 alloy with aluminum coating into the reaction. The melt of reacting components and formed intermetallic compounds impregnated the porous boride matrix. The stages of the synthesis are reflected in the thermograms of the combustion process. The EDS, SEM, and XRD data of the obtained material are consistent with the observed stages of the process. Up to four different scales in pore size are distinguished in the synthesis product.
Electronically Adjustable Voltage-mode First-order Allpass Filter Using Single Commercially Available IC
Authors: Chaichana Amornchai , Siripongdee Surapong , Jaikla Winai 
Published: June 2019

Abstract
In this design, the use of single commercially available integrated circuit (IC), LT1228 from Linear Technology Corporation, to implement the first order allpass filter is presented. The passband voltage gain of the presented first allpass filter (APF) is unit and constant throughout the operation frequency, while the phase response is electronically tuned by changing the external DC bias current. With this property, the proposed first order filter can be used as phase shifter with microcontroller controllability. Tuning phase property is not required any matching condition. The proposed phase shifter consists of one LT1228, one capacitor and two resistors which is attractive for off the shelf implementation. Moreover, the impedance at output voltage node is exhibit low which can connect to other circuit without the requirement of external voltage buffer. The expected performances of the proposed circuit are proved by Pspice simulation using macro model parameters. Also, the quadrature sinusoidal oscillator which is designed from the connecting of the proposed filter and integrator is chosen as application example.
Realization of Voltage-mode Multifunction Biaquadratic Filter Using Minimum Number of Active Element
Authors: Jaikla Winai , Siripongdee Surapong , Suwanjan Peerawut 
Published: June 2019

Abstract
The realization of voltage-mode multifunction biquadratic filter has been presented in this research contribution. The proposed circuit contains three input voltage nodes and one output voltage node. The structure of proposed filter is simple consisting of one modified current controlled current conveyor transconductance amplifier (M-CCCCTA) as active building block with one resistor and two capacitors. With electronically controllable property of M-CCCCTA, the parameters, natural frequency (ω0) and quality factor (Q) are electronically controlled by changing the external DC bias currents of the M-CCCCTA. The tuning characteristic of Q is also done without effect the w0. In the same circuit construction, five second order filter responses, all-pass, high-pass (HP), band-reject (BR), low-pass (LP) and band-pass (BP) functions are obtained. The output filter responses are obtained with applying appropriate input voltage to input node without the matching condition of active and passive elements. The performances of the proposed biquadratic filter have been verified through Pspice simulation in TSMC 0.25 μm CMOS technology parameters.
A Comparative Study of the Divalent Transition Metal Oxide Supported on Magnesium Oxide Catalyst for Lactic Acid Production from Glucose
Authors: Udomcharoensab T , Praserthdam P 
Published: June 2019

Abstract
In order to achieve the lactic acid production of lower energy consumption, reactor corrosion rate, while being environmentally friendly and sustaining high catalytic activity of various divalent transition metal oxide (Cu, Co, Ni and Zn) supported on magnesium oxide having the hexadecyltrimethylammonium bromide (CTAB) as a capping agent was investigated, where the reaction was performed under mild conditions in an alkali additive-free environment. Among all of the divalent candidates, the ZnCTAB/MgO exhibits the highest activity with a glucose conversion of 64% at a 100°C and a lactic acid yield of 12% at 140°C, a pressure of 0.4 MPa, over 1 h of reaction time. This is due to the high basicity produced via the water chemisorption on such catalyst’s surface.
Where to go: the floating arbitration agreement
Authors: Frank Morten 
Published: June 2019

Abstract
The article examines questions concerning interpretation of commercial arbitration agreements, according to which the place of arbitration is ‘floating’ and hence cannot be finally determined at the time of contracting. The question is, primarily, whether this inherent uncertainty about material procedural rules ‘infects’ the jurisdictional allocation to such an extent that the arbitration agreement must be considered unenforceable and secondarily, whether the floating element in itself constitutes a sufficiently specific procedural rule. Against the background of an analysis of case law from USA, England, Singapore, and Hong Kong, and drawing on experiences from unilateral and bilateral option agreements, the article extracts general principles of interpretation as well as provides specific guidance on the drafting of floating arbitration agreements.
Deep learning for drug–drug interaction extraction from the literature: a review
Authors: Zhang Tianlin , Leng Jiaxu , Liu Ying 
Published: June 2019

Abstract
Drug–drug interactions (DDIs) are crucial for drug research and pharmacovigilance. These interactions may cause adverse drug effects that threaten public health and patient safety. Therefore, the DDIs extraction from biomedical literature has been widely studied and emphasized in modern biomedical research. The previous rules-based and machine learning approaches rely on tedious feature engineering, which is labourious, time-consuming and unsatisfactory. With the development of deep learning technologies, this problem is alleviated by learning feature representations automatically. Here, we review the recent deep learning methods that have been applied to the extraction of DDIs from biomedical literature. We describe each method briefly and compare its performance in the DDI corpus systematically. Next, we summarize the advantages and disadvantages of these deep learning models for this task. Furthermore, we discuss some challenges and future perspectives of DDI extraction via deep learning methods. This review aims to serve as a useful guide for interested researchers to further advance bioinformatics algorithms for DDIs extraction from the literature.
Optimal designs for frequentist model averaging
Authors: Alhorn K , Schorning K , Dette H 
Published: June 2019

SummaryWe consider the problem of designing experiments for estimating a target parameter in regression analysis when there is uncertainty about the parametric form of the regression function. A new optimality criterion is proposed that chooses the experimental design to minimize the asymptotic mean squared error of the frequentist model averaging estimate. Necessary conditions for the optimal solution of a locally and Bayesian optimal design problem are established. The results are illustrated in several examples, and it is demonstrated that Bayesian optimal designs can yield a reduction of the mean squared error of the model averaging estimator by up to 45%.
Successful Invasions and Failed Biocontrol: The Role of Antagonistic Species Interactions
Authors: Schulz Ashley N , Lucardi Rima D , Marsico Travis D 
Published: June 2019

Abstract
Understanding the successes and failures of nonnative species remains challenging. In recent decades, researchers have developed the enemy release hypothesis and other antagonist hypotheses, which posit that nonnative species either fail or succeed in a novel range because of the presence or absence of antagonists. The premise of classical biological control of invasive species is that top-down control works. We identify twelve existing hypotheses that address the roles that antagonists from many trophic levels play during plant and insect invasions in natural environments. We outline a unifying framework of antagonist hypotheses to simplify the relatedness among the hypotheses, incorporate the role of top-down and bottom-up influences on nonnative species, and encourage expansion of experimental assessments of antagonist hypotheses to include belowground and fourth trophic level antagonists. A mechanistic understanding of antagonists and their impacts on nonnative species is critical in a changing world.
On restricted optimal treatment regime estimation for competing risks data
Authors: Zhou Jie , Zhang Jiajia , Lu Wenbin , Li Xiaoming 
Published: June 2019

SUMMARY
It is well accepted that individualized treatment regimes may improve the clinical outcomes of interest. However, positive treatment effects are often accompanied by certain side effects. Therefore, when choosing the optimal treatment regime for a patient, we need to consider both efficacy and safety issues. In this article, we propose to model time to a primary event of interest and time to severe side effects of treatment by a competing risks model and define a restricted optimal treatment regime based on cumulative incidence functions. The estimation approach is derived using a penalized value search method and investigated through extensive simulations. The proposed method is applied to an HIV dataset obtained from Health Sciences South Carolina, where we minimize the risk of treatment or virologic failures while controlling the risk of serious drug-induced side effects.
Establishment of permutation for cancer risk estimation in the urothelium based on genome-wide DNA methylation analysis
Authors: Tsumura Koji , Arai Eri , Tian Ying , Shibuya Ayako , Nishihara Hiroshi , Yotani Takuya , Yamada Yuriko , Takahashi Yoriko , Maeshima Akiko Miyagi , Fujimoto Hiroyuki , Nakagawa Tohru , Kume Haruki , Homma Yukio , Yoshida Teruhiko , Kanai Yae 
Published: June 2019

Abstract
The aim of this study was to establish permutation for cancer risk estimation in the urothelium. Twenty-six samples of normal control urothelium obtained from patients without urothelial carcinomas (C), 47 samples of non-cancerous urothelium without noticeable morphological changes obtained from patients with urothelial carcinomas (N), and 46 samples of the corresponding cancerous tissue (T) in the learning cohort and 64 N samples in the validation cohort, i.e. 183 tissue samples in total, were analyzed. Genome-wide DNA methylation analysis was performed using the Infinium HumanMethylation 450K BeadChip, and DNA methylation levels were verified using pyrosequencing and MassARRAY. Amplicon sequencing was performed using the GeneRead DNAseq Targeted Panels V2. Although N samples rarely showed genetic mutations or copy number alterations, they showed DNA methylation alterations at 2502 CpG sites compared to C samples, and such alterations were inherited by or strengthened in T samples, indicating that DNA methylation alterations may participate in field cancerization in the urothelium. Receiver operating characteristic curve analysis confirmed the feasibility of cancer risk estimation to identify urothelium at the precancerous stage by DNA methylation quantification. Cancer risk estimation permutation was established using a combination of two marker CpG loci on the HOXC4, TENM3 and TLR1 genes (sensitivity and specificity 96–100%). Among them, the diagnostic impact of 10 patterns of permutation was successfully validated in the validation cohort (sensitivity and specificity 94–98%). These data suggest that cancer risk estimation using procedures such as urine tests during health checkups might become applicable for clinical use.