bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Symbol Synchronization Technology of LDPC Coding System
Authors: He Yifeng , Hao Xiuqiang , Duan Zhemin , Jin Anzhong
Published: November 2019

In this paper, the influence of initial estimation of symbol synchronization error and signal-to-noise ratio on the performance of LDPC coding system is analyzed. Combined with the statistical characteristics of iterative decoding output soft information, a symbol synchronization joint signal-to-noise assisted by iterative decoding soft information is proposed. The ratio estimation algorithm combines symbol synchronization, signal-to-noise ratio estimation and iterative decoding through two closely related loops. Through the iterative calculation, signal-to-noise ratio and symbol in the case of extremely low signal-to-noise ratio The estimated value of the synchronization error can be quickly converged, and the decoding performance is close to the coding system with known signal-to-noise ratio and accurate symbol synchronization.
Research on Image Retrieval with Multi-features
Authors: Guo Yemin
Published: November 2019

This paper focuses on the key technology of image feature extraction in the image retrieval of the base ten-content, and systematically discusses the extraction technology of the low-level visual features of the image. The covered content mainly includes the color features, shape features, texture features and color space of the image. The characteristics of distribution are important. In-depth analysis and research on some key technologies in the field of image retrieval in the base ten content, including the description methods of the main low-level features (color, shape, texture, spatial position) of the image, the similarity measure between image features and the image retrieval algorithm Performance evaluation methods, etc.
Research on Design Method of Computer Control System for Frequency Conversion Speed Regulation Based on Cloud Technology
Authors: Liu Yishu , Gang Xu
Published: November 2019

With the development of power electronics technology, frequency converter as the controller of AC motor has been more and more widely used. With the continuous development and application of frequency converters, more and more occasions need to be remote controlled through the network. With the input system of computer, the process parameters can be easily changed. Intelligent control has become the feature and symbol of the new generation of control products, so intelligent control is bound to become a research hotspot in the field of control. Whether it is civilian or military, the variable frequency speed control synchronous control system has occupied a dominant position. Therefore, it is the current development trend to use a computer to control the inverter through communication. In order to meet the requirements of the production process, it is necessary to carry out technical transformation of the original system with new technology. This paper mainly describes the application of frequency conversion and automation technology in this system. The characteristic of the power supply voltage regulation synchronization system is that each unit is powered by its own power source. This method has better adaptability and a wider range of speed regulation.
Growth and yield of Shallot (Allium cepa L.) in respons of organic fertilizers and Trichoderma asperellum
Authors: Parwi  , Isnatin U , Hamawi M , Etica U
Published: November 2019

Increased shallot yield with aplication of organic fertilizer. Cajeput waste as a source of organic fertilizer is very abundant in Ponorogo. Research aimed to study the aplication of organic fertilizers and Trichoderma asperellum to incerase growth and yield of shallot. The experiment was laid-out in factorial randomized completely design with 3 replications and eight treatment combinations. The first factors is organic fertilizer ( without organic fertilizer; 6 ton ha-1 of cajeput waste compost, 3 ton ha-1 of cajeput waste compost + 3 ton ha-1 of rabbit manure, 6 ton ha-1 of rabbit manure). The second factors is Trichoderma asperellum (without T. asperellum and 1 L ha-1 of T. asperellum). The results of this study showed that treatmen of 3 ton ha-1 of cajeput waste compost + 3 ton ha-1 of rabbit manure without Trichoderma asperellum increased plant hight and leaf dry weight of shallot by 25% and 135,66%. The application of combination rabbit manure and without T. asperellum increased shallot tillering number by 9,67 tillering. The application of 3 ton ha-1 of cajeput waste compost + 3 ton ha-1 of rabbit manure increased shallot yield and diameter of shallot bulbs.
Cluster analysis of lombok island local buffalo (Bubalus bubalis) based on Principle Component Analysis (PCA)
Authors: Sukri A , Hajiriah T L , Jannah H , Andika  , Lukitasari M
Published: November 2019

The Preservation of buffalo cattle in North Lombok and Central Lombok regencies can be done through inventory activities and identification of cattle performance through analysis of morphological characters in order to determine the kinship relationships of buffalo. This study examines the grouping of local buffalo in Central Lombok and North Lombok based on morphological characters. The sample of this study consisted of 16 male and female buffaloes taken from both regions. One way anova analysis results on eight morphological characters of buffalo which include (1) body length, (2) shoulder height, (3) hip height, (4) chest circumference, (5) chest width, (6) head length, (7) head height, and (8) head width shows no difference in mean values of each character in the two observation areas. The results of PCA analysis revealed a map of buffalo morphology distribution which was divided into two groups, i.e. group 1 representing North Lombok buffalo located in quadrant III, while group 2 represented morphological mixtures of North Lombok and Central Lombok buffalo located in quadrant I, II, and IV. The results of the cluster analysis show that some buffalos from North Lombok has similarities with Central Lombok buffalo based on the eight morphological characters.
Transactional database design information system web-based tracer study integrated telegram bot
Authors: Sucipto S , Resti N C , Andriyanto T , Karaman J , Qamaria R S
Published: November 2019

A database is a software that is used to store data. Data stored is generally in the form of text. Database functions are not only for storing data but also used to speed up access to information systems. Optimal database management can increase access to information systems. One management that can improve performance is the appropriate relational data design. Relational is a relationship between tables. The design of the relational database must pay attention to the selection of data types, data type values, and constraints that will be selected. This study will examine the optimization of the MariaDB database on information systems in tracer studies. Database design will accommodate data from two application sources, namely web-based applications and telegram bots. Using two paths to the database to make it easier for users to register via a telegram bot, users can then access the tracer study questionnaire on web-based applications. The MariaDB database performance test shows that the highest performance average query is 6501 microsecond.
Analysis of business intelligence system design for student performance monitoring
Authors: Anardani S , Sofyana STT L , Maghfur A
Published: November 2019

The Informatics Engineering Study Program at the University of PGRI Madiun is one of the institutions that provide education services. The increasing number of students each year requires supervision and measurement of student performance in order to create an optimal process. The optimal process will produce output that is in accordance with BAN-PT standards related to student performance. Looking at these problems, it is necessary to have an information system that can present student performance data for the purposes of accreditation and evaluation of student performance. The purpose of this research is to analyze and design student performance monitoring information systems by applying the Business Intelligence concept. The systematics of this study refers to the Bussiness Intelligence Roadmap Method of Larissa T Moss and Shaku Atre. The results of this study are a design of data sources and system architecture that will be used in the system development process in the future.
The Concept and Implementation of Smart Room using Internet of things (IoT) for Cost Efficiency and Room Security
Authors: Endra R Y , Cucus A , Affandi F N
Published: November 2019

The Internet of Things (IoT) is a concept where internet connectivity can exchange information with each other with objects around it. The essence of IoT is interconnected devices that produce and exchange observation data, facts, and other data, so that it is available to anyone. In this paper we present how the smart room model is designed using sensors and micro-controllers to automate the use of electronic devices and the security of a room using the concept of the Internet of Things. Implementation of the smart room concept from the results of this study, we hope that the concept in this smart room can be implemented and the automation process in this smart room can have a major impact on the efficiency of operational costs, especially electricity payments and improve home security because there is automatic control.
Development of the E-Government Evaluation Model on City Level Through Pattern System Approach
Authors: Sukma A , Susanto T D
Published: November 2019

The evaluation process of e-government continues to be investigated in various parts of the world. It becomes an important thing to do an evaluation as a benchmark for the government as a developer of the e-government to find out how the current conditions of e-government with the objectives to be achieved, namely to get a more efficient and effective government process. Many studies tried to develop an evaluation model but only focus on a number of aspects from e-government. Some of them tried to examine the efficiency of e-government through outcomes in the form of services and the impact from using e-government from the perspective of users and providers of e-government services. In this study, evaluation of e-government is based on a systems pattern approach through input - process - output - impact from the development of e-government. In this study will use a case study from the city of Surabaya as one of the cities with a very good predicate by the Indonesian e-Government Ranking (PeGI). The final results of this study are in the form of a comprehensive model for evaluating e-government at the city level.
Docking application for food tenacity protection
Authors: Kholila B N , Martono D N , Soesilo T E B
Published: November 2019

Sustainable agriculture is based on the concept of organic agriculture. However, the sustainability of agriculture system depends on the system and the people. Therefore, the human knowledge on concerning the sustainable environment is the main contribution towards achieving food security. One of the systems that could be utilized for the preservation of food security is through ‘in silicO’ approach with docking application. The production under organic agriculture is more resilient against threat, it is also more stable thus the food security and the environmental condition could be preserved. This research aims to recommend computerized technology (docking) as a supporting device with a function to view the effectivity of the natural basic materials on the creation of biopesticide. Therefore, the utilization of docking application for the creation of biopesticide is able to contribute to the alleviation of environment quality degradation in order to preserve food security as well as to enhance the knowledge on agricultural behavior. The result found in this research is the computerized analysis outcome for the past four years using docking application that has obtained the value Ki converted as IC50and the value of LC50so that it could find its effectivity and toxicity.
Use of Support Vector Machine to Classify Rhizomes Based on Color
Authors: Maimunah M , Arumi E R
Published: November 2019

Rhizome plants are one type of herbal medicinal plants which have various types and benefits. To find out the types of rhizome plants can be done by the classification process. Classification of rhizome plants can be done by identifying the color of the flesh of the rhizome. Identification technology in this study is needed to accelerate and facilitate the process of identifying rhizome species in the form of digital image data. Digital image processing can be used to identify rhizomes based on color using the support vector machine (SVM). In this study, the type of rhizome used as an input image was temulawak, temu hitam and temu mangga. Image preprocessing is done to get the color image of the rhizome flesh which is then used in the feature extraction stage. Image feature extraction process is done to get the color characteristics of the image by calculating the image RGB value. The image color value obtained has been used to identify rhizome species using SVM. The results obtained indicate that the identification of rhizome types using SVM provides an accuracy of 87.5%.
Financial feasibility analysis of Pineapple carrot juice business
Authors: Sari M , Nurmaydha A , Rohmah D U M
Published: November 2019

Fruits and vegetables are horticultural commodities that have the potential to be developed. Pineapple and carrot are superior commodities that can be developed into juice drinks. The development of this juice product needs to pay attention to the financial feasibility of the business. This study will analyze the financial feasibility analysis using NPV, IRR, BC ratio, PBP, BEP methods. Financial feasibility analysis shows the Payback Period (PP) value of 2 years 7 months, Net Present Value (NPV) of IDR 102.128.626, Internal Rate of Return (IRR) of 17,29%, and B/C ratio of 1,04. Based on the results of the financial feasibility assessment, pineapple carrot juice business is feasible to run.
Online Expert System for Diagnosis Psychological Disorders Using Case-Based Reasoning Method
Authors: Rahim Robbi , Purba Windania , Khairani Mufida , Rosmawati R
Published: November 2019

Expert system of diagnosis of psychological disorders is a system designed to diagnose early symptoms of psychological disorders that may be suffered by individuals, online-based expert systems by applying the method of Case-Based Reasoning allows users to check the psychological condition directly with the results that can be used as a basis for more examination continue. The use of Case-Based Reasoning method facilitates the examination process for each user consultation because the result of past examination data can be used to compare with consultation data, psychological disorder examination with Case-Based Reasoning method can be done well.
Application of waste bank use in reducing household waste in sub-urban area?
Authors: Susilowati S , Herdiansyah H
Published: November 2019

Household waste becomes a problem in sub-urban area like Bekasi City. The quantity of waste to landfill increased from 2011-2015. To improve the situation the local government initiatives to reduce it by establishing Bank Sampah Induk Patriot (BSIP-waste bank in the city level) with the responsibilities to improve the participation of citizens on 3R (reduce, reuse, recycle) by educating and supporting them to build a waste bank in each rukun warga (RW-informal unit under village). This action is followed by issuing the new regulation concerning waste management based on community participation. This study aims to analyse the correlation between waste bank and household waste in term on reduction to landfill and financial benefit using Pearson correlation analysis. The results show issuing BSIP and new regulation impact on increasing the number of waste banks significantly. However, it is found the number of active waste bank is only 18.5%. The results show there is very strong correlation between the number of waste banks and the amount of waste reduction. It means the waste banks is effective to reduce waste to landfill. It’s recommended to BSIP to encourage the inactive waste banks and coordinate with the local authorities.
Modelling of Yarn Count and Speed of Delivery Roll to Yarn Strength in Spinning Machines Based On Analytical Mechanics
Authors: Putra V G V , Sahroni R , Wijayono A , Kusumaatmadja D
Published: November 2019

In textile, the application of analytical mechanics can be found in a spinning process. The aim of this research is to determine a model as well as to predict the yarn strength of ring- spun yarn influenced by the yarn count number (in unit m/g) and also the delivery speed of yarn (vf). In this article, the yarn count and the speed of delivery roll of ring-spun yarn were studied comprehensively, and based on this, a ring-spun yarn strength prediction model has been found and established by analytical mechanics.
Speed Control of Three Phase Induction Motor Using Universal Bridge and PID Controller
Authors: Hartono H , Sudjoko R I , Iswahyudi P
Published: November 2019

Speed control technique are generally essential in adjustable speed drive system. This system requires variable voltage and frequency supply which is obtained from a three phase voltage source inverter. This paper presents the speed control of induction motor fed by a three phase voltage source inverter using pulse width modulation method and universal bridge. To control the peak dc link voltage of voltage source inverter, a PID controller was designed. The performance analysis of open loop and closed loop speed control system is carried out in Matlab/Simulink. The simulation result shows that the speed controller has a good dynamic response and can control the induction motor successfully with a better performance.
Measurement of Wideband Indoor Radio Propagation Channel Using USRP
Authors: Harianto B.B , Hendrantoro M. , Ardiansyah G. , Mauludiyanto A.
Published: November 2019

This paper describes the measurement of wideband radio channel sounding techniques for indoor radio propagation. The system consists of multiple frequency band- switching scheme, which is able to extend the overall sounding bandwidth without changing operation bandwidth of the hardware. It is used for low mobility and high data rate communications. The system of the channel sounding is developed on a universal software radio peripheral (USRP) that employs an orthogonal frequency division multiplexing signal at 2.1902.290 GHz. In each sounding cycling, ten sub band frequency (10 MHz bandwidth) are used to reach an equivalent measurement over a 100-MHz bandwidth, corresponding to 10 ns time delay resolution. The validation test was perform using Vector Network Analyser (VNA). It will be showed variation result of channel impulse response consist of radio channel accuration and resolution between VNA and USRP. At the end of the chapter the proposed system will be used for measuring indoor channel propagation using five scenarios line of sight (LOS) and non-line of sight (NLOS).
Design of Portable Electric Hydraulic Jack for Improving The Productivity
Authors: Rachmawati P , Kurniawan I R
Published: November 2019

The hydraulic system is a system that works based on character and potential that exists in liquid. Maintenance is a work done in sequence to maintain or to improve existing facilities to comply with the standards. Nonconformities and limitations of tools and design concepts used by humans while working are still found in everyday life. The purpose of this research is to design the hydraulic portable device to facilitate the mechanics in car maintenance and repair especially a part of the bottom machine. The data collection is done by directly measuring the performance test of the portable hydraulic jack in Autocar Andi Jaya compared with the original jack. The conclusion of this research is a tool that has benefits in supporting the car when car service is performed. This tool generates the total number of completed car maintenance and repair outputs of 30 minutes of normal service completion compared to the ordinary j ack. Therefore, an electric portable hydraulic jack can speed up the performance of the mechanics and the results in improving productivity.
The effect of temperature on measurement accuracy
Authors: Khoiri H A , Isnaini W , Edison T A
Published: November 2019

The work environment gives some effects on the employee. One of these is the temperature. Inappropriate working temperatures can interfere with employee work performance. This study aims to proof the effect of temperature on the work efficiency by using the student as a respondent. The student must finish the task in two type temperature condition: with Air conditioner (AC) and no air conditioner (Non-AC). The task was to measure twenty-five workpieces (length and diameter) repeatedly using five types of measuring instruments. Different environmental temperatures are thought to affect student concentration during repeated measurements. The effect of temperature on the measurement results was tested using Two Way ANOVA. Other factors that are taken are the measuring instruments. The results obtained are the temperature conditioned using AC and Non-AC affect the measurement results with p-value<0.05. In addition, the temperature and measuring instruments together influence the measurement results with p-value <0.05.
Phytoremediation as a Sustainable Way for Land Rehabilitation of Heavy Metal Contamination
Authors: Alvernia P , Soesilo T E B
Published: November 2019

Land contamination from heavy metals leads to a decrease in soil functions. Chemical contamination on agriculture land will cause negative impacts especially affecting human health. The factor that causes heavy metals to be included in the group of pollutants is the nature of heavy metals to be non-degradable. Several physicochemical techniques have been utilized to remove the pollutants from the contaminated environment. However, such techniques require high costs, intensive labor, irreversible change of the nature of the soil which cannot be recovered and other contribution towards pofllution. One of the methods of toxicity reduction or applicable heavy metal mobility through in situ or ex situ as well as being environment-friendly is phytoremediation. Phytoremediation technology includes phytostabilization, phytostimulation, phytotransformation, phytofiltration, and phytoextraction. This paper aims to study phytoremediation frorem the sustainable indicators, namely environmental, social and economic aspects. Phytoremediation is one of the sustainable ways to recover contaminated lands by offering the lowest cost compared to other methods. Healthy and fertile agriculture land is the key to food security so that by utilizing phytoremediation it may recover the polluted land with low fertility through sustainability aspects.
Estimated leachate rate affected by climate change in landfill for radioactive contaminated hazardous waste from petroleum industries
Authors: Dwipayana C A W , Moersidik S S , Pratama M A
Published: November 2019

Naturally occurring radionuclides are present in the beneath the earth at different levels and can be concentrated and increased by operations related with the oil and gas industries. NORM disposal must provide adequate protection to both human health and the environment. Leachate is the major danger posed by contemporary landfills, which is affected by weather. In this paper a leach rate simulation has been carried out using the required design of class I landfill to see the effect of climate change scenarios. Simulations are carried out using the US EPA Hydrologic Evaluation of Landfill Performance software. The inputs are 60 years generated weather data from the LARS-WG program using 30 year historical data from Bogor Climatology Station. Climate change modeling uses GCM HadGEM3-ES with RCP scenarios 2.6, 4.5 and 8.5. The annual average rainfall for RCP 2.6, 4.5 and 8.5 climate change scenarios are, 3154.27mm, 3434.47mm, and 3316.33mm respectively, lower than the site base simulation 3854.24mm. The monthly average temperature of RCP scenario is higher than site base scenario, 3.78%, 4.60%, and 6.51% respectively for RCP 2.6, 4.5 and 8.5. But the leachate rate from the barrier soil layer has no difference for each climate change scenario.
Experimental Study on Variation of Tilted Angles Toward Acoustic Power of Thermoacoustic Engine
Authors: Anugrah R A
Published: November 2019

Tilted angles have to be researched for determining the good position of thermoacoustic engine. The research aims to find the best acoustic power with a tilted angle of the position, therefore the performance of Standing-Wave Thermoacoustic Engine (SWTE) is going to be increased. The performance is affected by the tilted angles. The natural convection which occurs in the core of Themoacoustic Engine will be different every tilted angle. The heat transfer characteristics within it were investigated under three tilted angles including, -90°, 0°, and 90°, with the resonator length 780 mm. This study was for getting the acoustic power which used the two sensors method with Data Acquisition (DAQ) NI-DAQmx 15.5 and two pressure transducers. It was calculated by Matlab R2013a. In this research is found that the acoustic power which is the best value is resulted on 90° of tilted angle, while the smallest value is found on 0°. Thes matter can be occured because phase difference of acoustic wave on the 90° is the biggest value, while the 0° is the smallest value. Further, have to study how phase difference has big effect toward the horizontal position which is resulted on the worse value compared the vertical position.
Requirement analysis of e-library application using Mandatory Desirable Inessential (MDI) and Technical Operational Economic (TOE) method
Authors: Putera AR , Riyanto S , Arianto M
Published: November 2019

The purpose of this study was to find out the requirement analysis to build e-library applications that will be managed by the Informatics Engineering Study Program at the University of PGRI Madiun. The focus of this study was requirement analysis using the Mandatory Desirable Inessential (MDI) method and Technical Operational Economic (TOE) methods. The analysis of online library information system requirements in this study was based on functional and non-functional needs analysis. This requirement analysis is based on functional requirements analysis that resulted 23 strategic information items to be done technically and operationally and resulted 4 non-functional items. Analysis of functional requirements based on feasibility resulted 12 technical items with middle or capable risks, and 9 operational items with middle or capable risks and 2 operational items at low risk or easy to do.
The development of the practicum based environmental pollution module for guided inquiry which collaborates video to improve student learning outcomes
Authors: Nugroho P A , Puspitasari Y D
Published: November 2019

The research aims to find out the improvement of student learning outcomes by applying the development of guided inquiry-based environmental pollution practicum modules that collaborate on videos. The syntax of guided inquiry, namely: identification problems, formulating hypotheses, collecting data, interpreting data, and conclusions. All are packaged in an environment- collaborating video pollution practicum module, where the learning outcomes used are from the implementation of the guided inquiry syntax listed in the module and student cognitive problems. The type of research is modified R&D (Research & Development) Borg and Gall (2003). The research sample is in the form of initial product trial sample, limited field trial sample, and operational field trial sample. The instruments used were a questionnaire, observation, and test. Based on the results of research when conducting water, soil, and air pollution practicum’s that have been carried out using the application of video collaborating modules, the results are obtained based on the syntax implementation (70.8%, 77.2%, 85.4%) and based on the results cognitive learning (79.87%, 83%, 86.40%). The results of the assessment of student learning outcomes at each meeting are increasing, so that the application of guided inquiry-based environmental pollution modules that collaborate videos can improve student learning outcomes.
The selection of Calcium Milk Products that are appropriate for advanced age using PROMETHEE II Algorithm
Authors: Irnanda Khairunnissa Fanny , Arifah Fatimah Nur , Raharjo Mokhamad Ramdhani , Arifin Ardian , Windarto Agus Perdana
Published: November 2019

The selection of Calcium Dairy Products that are suitable for old age uses the PROMETHEE II Algorithm. This study aims to recommend calcium milk products that are appropriate for elderly people based on consumer selection. This research was conducted in Simalungun district using interview techniques, observation and questionnaires to 350 elderly respondents randomly. This study also uses a quantitative data approach, which is testing four calcium milk products (alternatives) that are considered appropriate for use in old age. The four dairy products are widely used for the elderly, namely: Anlene Gold (A1), Entrasol (A2), Prolansia (A3) and Appeton 60+ (A4). The assessment criteria used in the selection of calcium milk recommendations appropriate for old age are: price (C1), content (C2), side effects (C3) and taste variants (A4). The solution used is to use a decision support system with PROMETHEE II algorithm. The results of PROMETHEE II calculation show that Anlene (A1) is obtained as the first recommendation of the right calcium milk with a value (net flow 0.5) and Appeton 60+ (A4) as the second recommendation with a value (net flow 0.484).
Diagnostic methods and tools for truck parts and components
Authors: Abdulaev E K , Makharatkin P N , Shihov A I
Published: November 2019

This article discusses a variety of diagnostic parameters and different control methods applied to trucks which are operated in open-pit mines. It contains the classification of truck parts and components based on their functions and the description of the main diagnostic parameters for each classification group. It analyzes equipment health monitoring practices and methods of predicting mean time between failures (MTBF) for the reduction drives of wheel motors produced by different companies. It describes one of the operational factors determining the choice of a nondestructive testing (NDT) method for the selected equipment. It analyzes the cost-effectiveness of using NDT methods and describes effective ways to reduce costs when using OTR tires taking into account the dependence of tire life on tire pressure and temperature.
Development of automated measuring device with magnetic fluid
Authors: Baranov B A , Sokolov A Yu , Malakhov I V
Published: November 2019

The article presents theoretical principles of the methods and devices for water activity (aw) measurement. The purpose of the research is the increase of the validity of water activity indicator measurement on the basis of a direct method of material test; the optimization of the structure of an automated measuring device to provide the possibilities for a simultaneous study of several samples (for example, food materials) with various water activity levels. A developed measuring device allows a simultaneous determination of indicators in several samples (8) located circumferentially and includes thermal sensors. The sensors in this device are represented by induction coils. They are installed on both leg pipes (made of nonmagnet materials) of a liquid level manometer. The device contains a special silicon organic oil with the pressure of partial steams within 10-6 Pa (at normal conditions) used as a manometric liquid. While measuring the device is vacuumized and thermostated. The method and device approbation resulted in making calibration charts at various temperatures, approximated with the help of software. The device provides the validity of measurements in water activity range from 0.45 to 1.0.
System of process control for associated concentrate nanostructures production
Authors: Ershov V A , Gorovoy V O , Nebogin S A , Govorkov A S , Suhanov A S
Published: November 2019

The article presents developed automated process control system of the associated concentrate nanostructure production and the technical and system software, which includes a local process control system and software and hardware that are shared by the technological purpose. The main technological parameters controlled and managed by the APCS are reflected. The article presents the composition of lower-level control system of the plant for production line nanomaterial products, software and hardware complex heat-exchanger and coagulator. The requirements to the functioning modes of the APCS ACNP are presented. It is shown that the developed automated control system of technological process of associated concentrates nanostructures provides the opportunity for the system structure development, including the increase in the number of measurement points using a margin of 10% on signals of input/output. While software and information support of automated control systems CNAA involves changing the configuration of the system and possibility of its expansion through modernization and the introduction of new tasks (complexes of tasks and algorithms).
Intensification carboaluminate technology of ultradeep desiliconization
Authors: Feoktistov A Yu , Pavluk D A , Ivanova E V
Published: November 2019

The article presents the results of the study of the effect of additive hydrogarnet sludge on the process of carboalumination desiliconization of aluminate solution. It is proved that type-ahead hydrogarnet sludge significantly intensifies the process of ultra-deep desiliconization due to the catalytic effect of the surface of the slurry in accordance with the theory of heterogeneous catalysis. A mathematical process model for the process of superdeep desiliconization in increased turnover hydrogarnet sludge is presented.
Mechanical properties measurements with portable hardness testers: advantages, limitations, prospects
Authors: Gogolinskii K V , Syasko V A , Umanskii A S , Nikazov A A , Bobkova T I
Published: November 2019

The article presents an analysis of the most common hardness measurement methods, implemented by portable hardness testers: rebound or Leeb method, static Portable Rockwell (PR) method and Ultrasonic Contact Impedance (UCI) method. These methods are reviewed in terms of the physical nature of the measurements and the influence of the measured sample properties and the probe parameters on the measurement result. The review contains advantages of each method, possible applications, as well as limitations due to the operation principles of probes. The article also contains the analysis of solving the problem of measurement results validity and their conformity with standardized hardness scales.
Approximation of amplitude-frequency characteristics using equidistants
Authors: Gozbenko V E , Kargapol’tsev S K , Karlina Yu I , Karlina A I
Published: November 2019

Building an equidistant curve to amplitude-frequency characteristic of oscillatory system with one degree of freedom, we introduce the limited damping. The analogous studies were carried out for the systems with the large number of degrees of freedom and analogous conclusions were obtained. It is possible to conclude that the equidistant curve, as a volumetric curve, reflects the results, obtained in the experiment and observed on the screens of different instruments with the study of technical systems.
Method of indirect estimation of lubricating properties of petroleum products
Authors: Kondrasheva N K , Zyryanova O V , Ivanov A S , Kosolapova S M , Kireeva E V
Published: November 2019

In this research, a new method for evaluating the lubricating properties of prophylactic agents was developed. For the method, specialized metal models and a press with a strain-gauge s-shaped gauge, using for recording shear load indicators, were designed. Using the new method, prophylactic agents based on mixtures of light and heavy gas-oil catalytic cracking and delayed coking with the addition of tar or cracking residue as depressor additives were analyzed. A research of the hydrocarbon composition of the prophylactic agent, which was correlated with the removed shear load diagrams, was also made. As a result, the dependencies of the lubricating properties of fuels with a change in their fractional composition were identified, and the most effective PAs were determined.
Approximation of testing of asphalt concrete to the actual operating conditions of road surfaces
Authors: Kovalev N S , Otarova E N , Gladnev V V , oglu Sadigov E A , Demidov P V
Published: November 2019

Existing test methods for asphalt concrete do not consider the actual operating conditions of road surfaces. The method, equipment and results of studies of the influence of the combined effects of vibration vacuum water saturation, ultraviolet irradiation and freezing-thawing on the structural and mechanical properties of asphalt concrete from slag materials are presented.
Reduction of the recovery period of marsh ecosystem through the use of new mining technologies
Authors: Kuznetsov V S , Kuznetsova A S
Published: November 2019

The article touches upon the issue of restoring wetland ecosystems after the industrial extraction of peat. The analysis of the processes occurring in the swamp reclamation, and the ways of development of peat deposits technologies that reduce ecosystem restoration period after production.
Application of electronic systems of georadical surface sensing
Authors: Limanskiy D V , Kuskildin R B
Published: November 2019

This article discusses the use of a complex of GPR near-surface sounding and the possibility of using GPR in determining the location and spatial parameters of the outbreaks of coal and coal dumps with the aim of quickly making management decisions to minimize the negative impact on the environment.
Peat and mineral anticaking agents for powdered nitrile-butadiene rubbers
Authors: Misnikov O S
Published: November 2019

The article discusses caking of loose materials and main methods of its prevention. The main characteristics of nitrile-butadiene rubber are outlined. It is possible to obtain hydrophobic-modifying additives during thermochemical degradation of organic matter peat. The author presents a method for analyzing anticaking agents based on peat and mineral compositions. The comparative analysis of the effectiveness of anticaking agents made of kaolin and chalk is made. It is established that the treatment of powdered nitrile butadiene rubber with a hydrophobically modified chalk makes it possible to reduce its ability to cake by 22.5 times during long-term storage compared with the control sample.
Influence of the shape of quartz sand particles factor on single particle erosion damage
Authors: Nasyrova M I , Kulakov P A
Published: November 2019

The paper presents data on the influence of aerodynamic factor of quartz sand particles on a single particle erosion damage as a part of investigation of gas-abrasive wear of field equipment steel elements caused by solid particles impact in conditions of sand production of wells. The studies are mainly focused on calculating geometric characteristics of the crater obtained as a result of a single particle impact, such as maximum penetration depth and equivalent diameter of the crater, affected by the shape of the sand grains. The results have shown the significance of experimental and numerical data, including sphericity, roundness and shape factor of particles determination towards further calculation of particles impact parameters.
Numerical simulation of a draining vessel
Authors: Nasyrova M I , Kulakov P A
Published: November 2019

In this paper the models of a theoretical tank and a real size draining vessel are described and numerically simulated. The main idea is to demonstrate the Toricelli’s law theorem for fluid dynamics for ideal liquid both for a theoretical vertical cylindrical tank and for a different geometry horizontal vessel of the same volume as the tank and compare the total time of liquid leaving the space of both of the reservoirs. The simulation is a multiphase problem containing two phases, which are water and air, is based on the VOF (volume of fluid) method discrete elements method (DEM) for simulating the sand bed formation for outlet nozzle capacity evaluation. As a result there are two-phase (gas-liquid) models of an “ideal” tank and an industrial vessel numerically calculated for determining and comparing the total time of water draining, and an extra model showing the dependence of sediment layer thickness on the outlet nozzle capacity.
Study of the dynamics and analysis of the effect of the position of the vibration motor to the oscillation of vibrating screen
Authors: Nguyen Van Xo , Nguyen Khac Linh , Dinh Gia Nghiem
Published: November 2019

A vibrating screen is a device for sorting materials, which is widely used in screening plants. The working ability of a vibrating screen relies on various parameters, such as dynamic parameters, technological parameters, and so forth. If it is necessary to find a reasonable set of parameters in order to enhance the machine’s performance, it is essential to set up the vibration equation of the vibrating screen. This is also a part of the research content that the article mentions. The next step is to establish the equation of motion of random point-P on the screen box, conduct the simulation, and discuss the effect of the position of the vibratrion motor on the oscillation of vibrating screens. The result reveals that the farther the point is from the focus of vibrating screen, the higher the effect of the vibration motor placement on the amplitude of vibration will be. The points are symmetrical with each other across the focus tend to create the rule of change is opposite. When the vibration motor is moving in the positive direction of the horizontal direction, the vertical oscillation amplitude of the points lying on the upper sieve will increase gradually, while the bottom points will decrease progressively. When the vibration motor is moving in the negative direction of the horizontal direction the change rule is opposite to the case of positive direction; if the vibration motor is 0.3 meters away from the focus of screen, the vertical vibration amplitude of the points on the sieve reaches the maximum value. The research results are of considerable significance to reasonably design parameters for vibrating screen working well.
Development of an operational environmental monitoring system for hazardous industrial facilities of Gazprom Dobycha Urengoy
Authors: Pashkevich M A , Petrova T A
Published: November 2019

The article presents an assessment of the technogenic impact on the atmospheric air inflicted by oil and gas extracting and processing facilities in Western Siberia. It is revealed that heterogeneity and areal dispersion of emission sources are the key features of the considered industry. Mathematical statistics techniques allowed grouping sources of air pollution and determining the major air pollutants at the considered production facilities. It is proposed to design an automated operational environmental monitoring system with a hierarchical two-level structure for operational and reliable control of the natural environment in the impact area of the studied facilities.
Radio interferometric location finding of VLF signal transmitters
Authors: Poletaev A S , Chensky D A , Chensky A G
Published: November 2019

The article presents some experimental results of using a very low frequency (VLF) interferometer designed in INRTU for radio direction finding of VLF transmitters. It is evaluated that amplitude angular-position measurements provides azimuth accuracy of several degrees. Distant VLF stations (3000 – 5500 km) can be located in a 2-6 km area if the signal azimuth is known with 0.001° accuracy. In order to minimize errors associated with antenna’s angular offset the authors developed a correcting algorithm. Using both radio direction finding methods and additional geophysical data (year and daily variations of solar terminator moving, signal disturbances during solar flares) the authors ascertained that 24.1 kHz and 25.0 kHz signals are emitted from the transmitter in Mokpo (South Korea). The phase measurements give about two times lower error of 1.5–2° for the NWC station (19.8 kHz, Australia) which is located more than 8200 km away from the VLF interferometer.
Use of heading-and-winning machine parameter loggers to predict gas-dynamic phenomena at potash mines
Authors: Shishlyannikov D I , Pushkarev A E
Published: November 2019

The paper presents analysis of the main instrumental monitoring methods of potassium beds outburst hazard. The main disadvantages of the existing means of predicting gas-dynamic phenomena in potassium beds are the low automation level and the cyclicality of measurements at a certain pitch or time interval, which leads to a decrease in the productivity of mechanized combine systems and adversely affects the safety of processes in the shrink stopping. The main requirements are laid down, which shall regulate the development of methods and techniques for predicting gas-dynamic phenomena in potassium beds. Design and operating principle of VATUR software logging system developed by members of the Mining Electrical Engineering Department of the Perm National Research Polytechnic University is described. The results of experimental researches on estimation of size and character of change of energy parameters of a potassium bed fragmentation by operating cutters of Ural-20R heading-and-tunneling machines are presented. The researches have shown that the measurement technique and the equipment reveal deviations of specific power inputs of a potassium bed fragmentation by the machine’s operating members with high accuracy and speed. The results of the experimental studies made it possible to substantiate the prospects of using the energy parameter loggers of cutter-loaders at predicting gas-dynamic phenomena at potassium mines. The suggested concept of the software measuring complex can be used in the development of on-board parameter loggers of the heading-and-winning machines in potassium mines.
Forecasting indicators of thermal oxidative stability of lubricating oils
Authors: Kovalsky B I , Petrov O N , Shram V G , Bezborodov Yu N , Sokolnikov A N , Lysyannikova N N
Published: November 2019

The results of testing partially synthetic Total Quartz 10W-40 SL/CF motor oil for thermo-oxidative stability in terms of optical density, volatility and coefficient of thermo- oxidative stability are presented taking into account the thermal energy absorbed by the products of oxidation and evaporation. The linear dependences of the decimal logarithm of thermal energy absorbed by the products of oxidation and evaporation and the total thermal energy absorbed by these products from the decimal logarithm of the test time in the temperature range from 160 to 190 ° C are established. A graphical and analytical model is proposed for predicting the indicators of thermo-oxidative stability, determined by the dependence of the decimal logarithm of the thermal energy absorbed by the products of oxidation and evaporation on the temperature of thermostating.
Effect of coal-containing additives on the rheological properties of limestone-nepheline charge in the technology of alumina production
Authors: Siziakova E V , Ivanov P V , Nikitina T Yu
Published: November 2019

The article is devoted to the influence of brown coal additives on the sintering of the lime-nepheline charge in the technology of alumina production from nepheline. The process of extraction of humic compounds from brown coal is considered, the effect of humic additives on the rheological properties of pulp depending on the size and moisture content of carbon-containing additives is studied.