bluuebunny/crossref_metadata_2025 huggingface dataset:
Separation of Oleoresin from Nutmeg Using Ultrasound Assisted Extraction and Hexane as Solvent
Authors: Ananingsih Victoria Kristina , Soedarini Bernadeta , Karina Emerentiana
Published: July 2020

Indonesia has many herbs and spices that function as ingredients for making herbal medicine or for cooking. Nutmeg (Myristica fragrans) is an Indonesia’s origin plant that has many health benefits. It produces specific flavors come from its bioactive compounds, namely oleoresin. Oleoresin can be extracted from nutmeg to get the concentrated compounds; hence it can be applied easily as the ingredient of food and beverage products. Ultrasonic assisted extraction (UAE) is applied in this research since it has higher yield compared to other extraction methods. This research is aimed to optimize the process condition of ultrasonic assisted extraction of nutmeg to get the good qualities of oleoresin. Solvent used in this research was hexane with extraction temperatures of 39, 45, 52 °C, and extraction times of 30, 45 and 60 minutes. Ratio between nutmeg and solvent were 5:100, 10:100 and 15:100. Frequency used was 45 kHz. The results showed that the optimum process condition to separate oleoresin from nutmeg were at extraction temperature of 52 °C, extraction time of 60 minutes and ratio between nutmeg and hexane of 5:100. This optimized process condition produced yield 62% of extracted oleoresin. Antioxidant activity and phenol content of this optimized oleoresin were 44,78% and 0,11 ppm respectively.
Bioethanol Production from Alkali Steam Explosion of Oil Palm of Empty Fruit Bunch Fiber
Authors: Sudiyani Yanni , Wahyuni Eka Tri , Muryanto Muryanto , Marno Sephtian , Putri Nelizza
Published: July 2020

Bioethanol is the most promising biofuels and can be generated from lignocellulosic biomasses. The study of bioethanol production from oil palm empty fruit bunch (OPEFB) pretreated by alkali steam explosion was carried out employing separate enzymatic hydrolysis (SHF) and Simultaneous Saccharification and Fermentation (SSF) approaches. Alkaline extraction after steam explosion pretreatment of OPEFB led to the partial removal of lignin, hemicellulose and other degradation products from fiber surface. The pretreatment process is of great importance to ethanol yield. In the present study, the pretreatment was processed using a steam explosion reactor at 150°C, 4 bars for 30 minute with alkaline concentrations of NaOH 10% (kg/L). After pretreatment, the OPEFB substrates 10% and 15% (w/v) was saccharification using 30 FPU of Ctec2 and Htec2 enzyme and fermentation using yeast of Saccharomyces cerevisiae for 72 hours. The glucose obtained after 72 hours was 137.80 g/L (subtrate 15%) and 97.90 g/L (subtrate 10%). Bioethanol production in SSF mode faster and slightly more efficient process than SHF.
Durability and Taste of Tofu with “Ie Asam Sunti” Coagulant
Authors: Salmyah  , Fachraniah  , Fajri  , Maulizar
Published: July 2020

One of the special spices in the Province of Aceh that is not available except “Pliek U” is “Asam Sunti”. “Asam Sunti” is made from star fruit wuluh by means of drying in the sun and fermentation at night until the 4-5 days. Waste “Ie Asam Sunti” which can be used as a coagulating of soy protein and tofu preservatives because it contains some that are not contained in starfruit, among others: acids, citric, calcium citrate, flavonoids and anti-bacterial. The results showed that the “Ie Asam Sunti” can coagulating of soy protein into tofu, based on statistical analysis, Minitab software 14 optimal caking process at 5 hours immersion, 25 minutes coagulating time and volume of 250 ml “Ie Asam Sunti” get 120 - 140 % yield, content protein with the Kjedall tool obtained 6.89 – 10.54 %, the results of the microbial test showed the number of microbes <3APM / Gr and the test of the taste was very delicious.
Characteristics of Wafer Originated from Coffee Waste as Ruminant Animal Feed
Authors: Milawarni  , Arskadius  , Elfiana E. , Yassir
Published: July 2020

Coffee waste is a by-product from processing coffee beans which has the potential to be used as a reinforcing feed material (concentrate) for ruminants. The waste of coffee fruit is physically quite large in composition, that is 48% of the pulp and the rest is waste. The disadvantages of this coffee waste to be used as feed are its high fiber content (21%), caffeine and tannin and its voluminous physical form. But all this can be overcome by fermentation using Aspergius Niger so as to increase its nutritional value. This research was carried out by making a feed composition including: P0 = 0% coffee husk waste (control) and 98.75% rice bran, P1 = 30% coffee husk waste and 68.75% rice bran, P2 = 60% coffee husk waste and 38.75 rice bran and P3 = 90% coffee husk waste and 8.75% rice bran. The variables observed were the physical characteristics of the feed wafer including: aroma, color and density and palability. Data was collected and analyzed using ANOVA and Duncan Range Test. The results showed the use of coffee husk waste should be used at a level of 30%, because it has a high palability value and low density and crumbs so it is easier for ruminant animals to consume.
Window Cleaning Robot by using Arduino as Microcontroller
Authors: Markom Arni Munira , Arriffinjee Muhammad Asyraffuddeen Bin , Haironi Muhammad Fikri Bin , Yusoff Zakiah Mohd
Published: July 2020

Stunning and modern houses nowadays have been constructed with increasing number of curtain window glass walls and corresponds to the requirement of its maintenance, repair and care from dust and pollution. This window produces a lot of difficulties such as the window height and the exposure to the risk of hurt or injury during the cleaning process. A window cleaning robot by using Arduino Mega as microcontroller is developed with neodymium magnet, ultrasonic sensors, DC motor, servo motor, motor driver and buzzer. Neodymium magnet is used to attach the window robot vertically on the surface of glass wall whereas servomotor will move the robot accordingly. To detect an obstacle or the robot reached at the edge of panel at about 3 cm, an ultrasonic sensors are used to notify and enable the DC motor to change its current path. When all four sides of the edge of panel window is detected, the robot will turn on a buzzer continuously to notify user that glass window cleaning process is completed successfully.
Static Analysis of Functionally Graded Coated Plate on Elastic Foundation Based on Levy Method
Authors: Toudehdehghan Abdolreza
Published: July 2020

Levy method for bending analysis of composite plate resting on a Winkler elastic foundation hypothesis is presented based on classical plate theory. Two models were considered for a composite coated plate. These two models were named conventional composite model and functionally graded coated model. The conventional composite model was consisting of a ceramic Homogeneous Coated (HC) layer and metal layer. The Functionally Graded Coated (FGC) model was consisting of Functionally Graded Material (FGM) as a composition of ceramic and metal on a metal layer. The material properties of FGM composite are assumed varying exponentially along the thickness direction. Also, the material properties of the nan-FGM layers are assumed homogeneous. Finally, the effect of the FGC layer, as well as, the elastic stiffness of the foundation is presented and compared with the results of the HC model.
Nanosecond Pulse Erbium-Doped Fiber Laser based on Evanescent Field Interaction with Lutetium Oxide
Authors: Jafry A A A , Yusoff R A M , Kasim N , Rifin S N M , Muhammad A R , Harun S W
Published: July 2020

The mechanism of evanescent field interaction is established between lutetium oxide (Lu2O3) and light on the surface of D-shaped optical fiber. The D-shaped optical fiber was prepared using rotating wheel technique with the improved two times polishing method. The side-polished fiber sample owns a remaining fiber diameter of 70 μm and polishing length of 1400 μm. Lutetium oxide was deposited onto the D-shaped optical fiber as a pulse initiator inside an erbium-doped fiber laser cavity. A Q-switched with operating wavelength of 1565 nm was generated. Stable pulses were recorded as the pump power raised from 146 to 162 mW with pulse width as short as 450 ns and repetition rate of 0.967 MHz. As the pump power varied, output power of 120 to 160 μW which corresponds to pulse energy of 124 to 166 pJ were obtained.
Geographic Information System for Waste Management for the Development of Smart City Governance
Authors: Saptadi N Tri Suswanto , Chyan Phie , Pratama Andrew Christopher
Published: July 2020

The Era of the Industrial Revolution 4.0 has been able to change the paradigm of government towards the contribution of Information Technology in providing fast, precise and accurate services to the public for better information service needs. Trends in Smart City Governance will also increase public and government participation in utilizing application data so that they can provide suggestions and criticisms quickly, easily and accurately. Makassar has a population of 1,469,601 people and is the highest compared to other regions in South Sulawesi. Makassar has produced around 1,200 tons of waste per day that goes to Tamanagappa landfills. Waste generated by each district is different from other districts, so it is necessary to do integrated waste management. To overcome this problem, Makassar City Government applies the Smart City concept that focuses on Smart Environment. This concept aims to reduce and utilize waste and create better energy sources. The research objective is to develop a system that can provide information to the public so that the performance of the Makassar City Sanitation Office becomes effective and integrated. Geographic Information System (GIS) is a system designed to capture, store, manipulate, analyze, organize and display all types of geographic data. GIS components consist of data, software, hardware, users, and applications. Research using the Spiral method with tools or applications used by implementing ArcView, ArcGis, and Map Info. GIS tools used are based on Open Source such as Google Maps by providing various types of libraries that can be directly used. The results showed 90% of respondents agreed that this application could be used.
Characterization of Lombok Earthquakes on July-August 2018 using Focal Mechanism Analysis
Authors: Karima T , Wijaya S K , Rosid M S , Rohadi S , Perdana Y H
Published: July 2020

Focal mechanism study was carried out on 5 major earthquakes that occurred in Lombok on July-August 2018. The KIWI program was applied here to compare the parameters of the 5 earthquake sources. The principle of the KIWI program is inversion of wave components at various stations to obtain the moment tensor. Green’s Function is also implemented to create synthetic waves representing the observation waves. Source parameters are taken from the synthetic waves from the five recorded events, and it was found that the 5 earthquakes on July 29th, 2018, August 5th, 2018, August 9th, 2018, and two earthquakes on August 19th, 2018 have strike values varying between 61°-74°, dip values between 18°-36°, and rake values between 75°-93°. These five earthquakes have similar source parameters, and have focal balls which state that the type of fault in these earthquakes are thrust faults. The similar source parameters, close range of time of occurrence, and hypocenter distances indicate that the earthquake events were most likely caused by the same fault.
Smart Bed Using Voice Recognition for Paralyzed Patient
Authors: Fadillah Nurul , Ihsan Ahmad
Published: July 2020

Smart beds are a way to simplify homework, especially for the elderly (elderly) and those who have physical disabilities, disabilities or paralysis. They can move the height of the bed according to their needs and comfort. The proposed system consists of a speech recognition module, an arduino, a relay circuit, and an adjustable bed. Voice recognition modules need to be trained before they are used to recognize commands. After successfully recognizing the voice command, Arduino directs the charge according to the help of the relay circuit. Adjustable bed height can be adjusted in three different modes according to the user’s comfort and needs. The accuracy of the speech recognition module is measured in three bed height modes with different conditions Istirahat, Berbaring dan Bangun, Istirahat in a 145 degree position, Bangun 110 degrees and Berbaring 180 degrees. ON, OFF, Rest, Wake and Lie down. A total of ten experiments were carried out for each order listed in the table. Out of ten experiments, the speech recognition module correctly recognizes voice commands. The percentage accuracy of the voice recognition module in silence is 75%
Preparation, Characterization of Palm Oil Based Polyols Reinforced with Bentonite-Chitosan as A Sustainable Raw Material for Anti-Bacterial Polyurethane Coatings in Medical Devices
Authors: Rihayat T , Nurhanifa  , Riskina S , Yunus Y
Published: July 2020

In this study, polyurethane synthesis was carried out using the prepolymer method using the reaction of toluene diisocyanate (TDI) with palm oil-based polyols. To provide heat and anti-bacterial properties in polyurethane coatings, the addition of bentonite (B) and chitosan (K) into polyurethane samples was carried out. The concentration of bentonite and chitosan used were 1.5%, 3.5%, and 5.5%, respectively. Polyurethane-bentonite-chitosan (PU-B-K) samples were analyzed using FTIR to analyze the structure of chemical compounds. Preparation of bentonite purification was carried out by adding cetyltrimethylammonium bromide solution to the bentonite solution. The expected results in this study are the nature of the bacterial resistance produced, while to see the characteristics FTIR tests were performed. Meanwhile, to see the heat resistance TGA test will be performed.
Chitosan Modified Bio-Fibre Based Board as Antimicrobial and Anti-Crack Board
Authors: Suryani  , Fitria  , Rihayat T , Nurhanifa  , Hasnah T Y R
Published: July 2020

Bio-based products represent a key component of global bio-economic growth. In the process of forming a bamboo fibre-based bio board in this study begins with the preparation of bamboo fibres to make it compatible as a filling material in polyester polymers. The mixing of bamboo fibre is done by considering the composition of the fibre material with the polymer used, namely polyester at a ratio of 90%:10%, 80%:20% and 70%:30% of the total weight of the mixture. This mixture is added with a natural substance that has been investigated to have resistance to microbial contamination (anti-microbial), chitosan at a ratio of 1%, 3% and 5% by weight of the total mixture of all components. Bio board printing is carried out using a hot press (moulding) tool. The functionality of bio-based and conventional natural fibre-based materials was investigated for a series of bio boards. The tests include tensile, antimicrobial activity and morphological testing using Scanning Electron Microscopy (SEM). The overall test results put bio board with a ratio of 70%:30% with the addition of chitosan as much as 5% wt as the best sample with a tensile strength value of 147 Mpa, the flexural value of 0.09 kN. The sample shows a good interface appearance of the bond that occurs between the polymer and the filler under the electron microscope.
Identification of Fault Structure in Lombok region, West Nusa Tenggara using Tomography Lombok Earthquake Data of July-August 2018
Authors: Widyarta R , Wijaya S K , Rosid M S , Rohadi S
Published: July 2020

Lombok and Nusa Tenggara are one of the regions in Indonesia that have quite complex tectonic arrangements. With this order, not infrequently in the region there are often natural disaster phenomena. One of the most striking things is the occurrence of a series of earthquakes of magnitude Mw > 5.0 that rocked the northern region of the Island of Lombok on 29 July 2018 (Mw = 6.4), 5 August 2018 (Mw = 6.9), 9 August 2018 (Mw = 5.9), 19 August 2018 (Mw = 6.3 and 6.9) and 25 August 2018 (Mw = 5.5). This study aims to identify the condition of tectonic structures under the surface of the earthquake occurring region using the tomography method. This method utilizes earthquake travel time data recorded at 15 BMKG seismic stations. The tomogram results show the contrast of anomalous values in the Vp and Vs models. The contrast of the anomalous is associated with the presence of fault structures that have an allowance angle of about ± 20-30° and a thrust fault type, verified by focal mechanism ball data. This thrust fault is then indicated as the cause of the occurrence of earthquakes with magnitude Mw > 5.0, which shook the northern part of the island of Lombok in July-August 2018. According to the tomography result, the fault is located closer to the north side of Lombok Island than Flores Back arc Thrust.
Structure identification of geothermal field “X” using ML-SVD method of gravity data
Authors: Naufal M A , Rosid M S
Published: July 2020

Understanding the main geothermal components such as clay cap, reservoir, heat source and faults structure can reduce the risk at the drilling stage. The role of the faults is very important since it can be a recharge/discharge medium of geothermal fluid. One method that can be used to identify the faults is the gravity method. The combination of the upward continuation and second vertical derivative (ML-SVD) methods is carried out to characterize the geological structure both the slope direction, depth estimation, dip estimation and type of structure. Upward continuation is carried out from a height of 0 - 2000 meters with an interval of 250 meters. SVD filter is applied at each height level. ML-SVD result shows that the fault structures at the study area have a value of dip > 70° with various fault configurations. Some faults are estimated at a certain depth under a layer of rock. ML-SVD shows a circular pattern that indicated as a caldera structure. The fault orientation of the study area tends SW-NE and NW-SE with dip perpendicular to the strike.
Performance Analysis of CUDA by Implementation of Hypergraph Partitioning for Parallelizing Sparse Matrix-Vector Multiplication Using Quadro K4200
Authors: Murni  , Handhika T
Published: July 2020

This paper addresses the performance analysis of sparse matrix-vector multiplication through hypergraph partitioning techniques using CUDA GPU-based parallel computing. Quadro K4200 is the GPU that is used in this paper. On the implementation of matrix-vector multiplication, various sizes and types of matrices are attempted. Our results show that on the average scenarios with 2 partitions, 4 partitions, 8 partitions, 16 partitions and 32 partitions in 1024 threads, CUDA performs up to 700 × better than sequential programming.
The simulation of evacuation from multistorey building using NetLogo
Authors: Lestari D P , Sabri A , Handhika T , Murni  , Sari I , Fahrurozi A
Published: July 2020

The occupants of a multistorey building are very vulnerable when disaster happens (e.g. fire, earthquake, etc.). In the worst case, the only way to escape is through the emergency stairways, in which they scramble with the occupants coming from the higher floors. This situation often creates bottlenecks along the way, which in turn extends the evacuation time. In addition, the panic situation increases the risks of accidents, causing injuries or even death. In this research, we use NetLogo to simulate the evacuation process from a simplified multistorey building based on some parameters, which are the placement of the emergency stairways, the number of occupants in each floor, the number of stories, and the height of the floor. We set simulation scenarios to analyze the relation between the number of stories with evacuation time in each configuration. In our experiment context, we conclude that when the time-limit applies, the total evacuation through stairways is not effective for buildings having more than three storeys.
Reservoir Characterization with Acoustic Impedance Inversion and Multi attribute Method on “Essen” Field, Talang Akar Formation, Sub-Ciputat Basin, North West Java
Authors: Nugroho E S , Riyanto A , Suardana M
Published: July 2020

Acoustic impedance and multi-attribute seismic inversion seismic are a number of seismic methods that can be used to map sandstone reservoir distribution. Using this method, we can separate the sandstone and shale in the Talang Akar Formation found on the “Essen” Field, Ciputat Sub-Basin. Both of these methods will be compared with each other in order to get more valid results in sandstone reservoir mapping. The inversion method used in this study is a model-based method. While the multi-attribute method used is the neural network in mapping gamma-ray volume, shale volume, and porosity. The inversion results are not able to image the sandstone distribution good enough because the range is too large and there is overlapping on the acoustic impedance values of sandstones with ranges (8000-12000) (m/s)*(g/cc). The results of the gamma-ray multi-attribute, shale volume and porosity, have been shown to consistently show the distribution of sandstones that have a trend in the distribution of NW-SE reservoir zones. From the results of the analysis there are several potential areas that have the potential to become the next development area, namely the distribution of sandstones in the northern part with high effective porosity, and good seals; In the south with a large volume of sandstones; as well as the distribution formed on the channel surrounding the fault.
Study of Dynamic Stability Analysis in the Sigura-gura Hydro Power Plant using the Power Stabilizer System as Compensation
Authors: Zulfikar
Published: July 2020

To maintain the stability of the power plant system, effort are needed to keep the generator in sync. This study was conducted to determine the performance of each power plant in the Sigura-gura power system when interference with the transmission network. By reviewing the response curve through simulations with the EDSA software, it can be seen the changes in rotor angle, voltage oscillation and power for each generating system when a disturbance occurs. The application of PSS as a compensation to improve the character of the power system’s stability against interference by observing changes in rotor angle, voltage and power. The observations show that the installation of PSS controllers in excitation as compensation to the Sigura-gura electric power system can contribute to better system performance by improving the rotor angle oscillation time, voltage and overshoot respectively 7.8%, 66.6% and 37.9%.
Smart Power Management System for Ambulance
Authors: Mat Fauziah Che , Binti Mokhtar Shah Erawati , Badrol Hisyam Mohamad , Wadi Harun Sulaiman
Published: July 2020

Ambulance is one the most critical component in healthcare where it must have highest reliability and mobility to ensure minimum travel time of patient to the hospital. In Malaysia, there are significant number of cases where ambulance tend to have breakdown or caught on fire due to electrical current overload which caused by unmanaged electrical usage by medical equipment. To overcome this problem, a smart power management system has been developed by employing Hall-Effect based current sensor replacing conventional fuse. The sensor reading is actively analysed by a microcontroller which will cut off electrical power from over-current equipment. The system also can prioritize some critical equipment to be powered when there are limited current available.
Soot Formation Model Performance in Turbulent Non-Premix Ethylene Flame: A Comparison Study
Authors: Elwina E , Sylvia N , Wusnah W , Yunardi Y , Bindar Y
Published: July 2020

This paper presents results obtained from the application of a computational fluid dynamics (CFD) approach to modelling of non-premixed turbulent ethylene sooting flame. The study focuses on comparing the two soot models available in the Fluent in predicting the soot level in the turbulent non-premixed ethylene flame. A standard k-ε model and Eddy Dissipation model are utilized for the representation of flow field and combustion of the flame being investigated. For performance comparison study, a single step soot model of Khan and Greeves and two-step soot model proposed by Tesner are tested. The results of calculations are compared with experimental data for a turbulent sooting flame taken from literature. The results of the study show that a combination of the standard k-ε turbulence model and eddy dissipation model is capable of producing reasonable predictions of temperature both in axial and radial profiles; although further downstream of the flame over-predicted temperatures are evidence. With regard to soot model performance study, it shows that the two-step model clearly performed far better than the single-step model in predicting the soot level in ethylene flame at both axial and radial profiles.
Analysis of energy efficiency improvement of boiler-houses in oil and gas industry using method for deep chilling flue gases
Authors: Osintsev K V , Bolkov Y S , Zavyalova M I
Published: July 2020

The article is devoted to the methods of increasing boiler-house efficiency. This current problem is considered in the article by two reasons: big part of volume flue gases enter the atmosphere, utilization of this gases is difficult process. The scope includes a description of the sample of heat exchanger. The analysis method for deep chilling flue gases for increasing the energy efficiency of the boiler-house was carried out. This method can be used in enterprises with big energy consumption, also boiler-house with small capability. The calculation of a boiler-houses with different was given, as an example. Average increasing energy efficiency of boiler-houses was found.
Angle impact on drill life during hole drilling land mine explosion at Quangninh area, Vietnam
Authors: Van Chien Dinh , Khac Linh Nguyen , Golikov N S
Published: July 2020

Rock drilling and blasting holes created during construction of underground mining in general and in Quangninh are the interaction of the drill into the rock. Drilling efficiency and productivity depend on many parameters such as power dam, the rock solidity and the rotational speed of drilling and geometric parameters of the drill head. These parameters determine and affect the durability of the drill head. In this report, the authors present the results of experimental studies of the influence of sharp angles on the durability of the cross drill head during the drilling process and blasting rock in the Quangninh coal region. According to the results, it is established that the wear intensity f varies positively with firmness i
h and inversely with the sharp angle of the drill head in the range of studied sharp angles. Nevertheless, the variation of wear intensity with regard to the change in sharp angles is not significant compared to the variation of wear intensity according to the rock strength. Research results can be used to calculate, design and choose appropriate drill rock quarry that increases the productivity and efficiency of drilling, contributing to reducing product costs.
Simulation of power supply systems with external faults and methods for increase of residual voltage at terminals of power receivers
Authors: Bakhteev K R , Fedotov A I , Sh Misbakhov R
Published: July 2020

The article discusses the effect of the remoteness of the place of a three-phase short circuit on the depth of the voltage dip depending on the load on the synchronous generators and synchronous motors. A series of experiments was carried out where the length of the 110 kV overhead power line varies, at the end of which a short circuit occurs, as well as the load distribution coefficient of a synchronous machine with higher than normal field-forcing ratio and the influence of these parameters on the level of residual voltage among large industrial consumers. The efficiency of using synchronous machines with a higher than normal field-forcing ratio of the excitation is estimated, and their stability under a sharp increase in loads, which cause voltage changes during the transition process and cause rotor vibrations, accompanied by magnetic losses due to the occurrence of eddy currents in the rotor core, is considered. The results of simulation presented in the Simulink are a MATLAB-based graphical programming environment for modeling, simulating and analyzing multi-domain dynamical systems.
Optimization of structure of control system with fuzzy controller
Authors: Muravyova E A , Enikeeva E R
Published: July 2020

The article gives a brief description of the three-phase separator of the “Heather-Triter” type. A three-phase separator of the “Heather-Triter” type is used to obtain commercial oil from well products, and to separate well products for gas, oil, and water. To regulate the oil level and phase separation, the separator is equipped with direct-acting mechanical control valves on the oil outlet line and on the water outlet lines. The issues of modeling the level control system in a three-phase separator of the “Heather-Triter” type, and criteria for the quality of production management are considered. The description of the model of a three-phase separator of the “Heather-Triter” type is given. It works with various methods of fuzzy controllers. A method for improving the quality of level control in the Troika is described by the Heather-Triter phase separator using a fuzzy controller. The issues of optimizing the structure of a control system with a fuzzy controller are considered. A method for improving the quality of level control in a three-phase Heather-Triter separator is described.
Application of analytic hierarchy process for selection of heat transfer meters
Authors: Abdulkina N V , Sitdikova I P
Published: July 2020

At the present time, the process of super-viscous oil deposits development is of current interest among the oil companies. The production of super-viscous oil in the Republic of Tatarstan is carried out using the steam-assisted gravity method. The article proposes a method for solving the problem of selecting a heat meter devices on sites of the Ashalchi field for the production of super-viscous oil. Analytic hierarchy process was used and the parameters required for the optimal selection of heat meters have been determined in the course of investigations. Based on these parameters, a hierarchy for the heat metering unit and a pairwise comparison matrix for the main criteria of the flowmeters have been made. As a result of the analysis, the optimal flowmeter in terms of the chosen criteria has been selected.
The mathematical description of the part as the source data in the computer-aided design process
Authors: Makarova T G , Minulina A R , Yu Filimonova M , Brodskaya T A
Published: July 2020

The paper reviews the issues of source data generation for automated design of the technological process of machining and geometric information transfer from one design stage to another. When dealing with design issues, the input of source data related to the work-piece and manufacturing conditions plays an important role. The formalized description of these objects is carried out using mathematical models. A drawing of a machine-building part or work-piece is a geometric model of the manufacturing item. However, this model is inconvenient when establishing links in the design of its manufacturing processes. Drawing models are the basis of graphic modules of computer-aided design systems. However, they are inconvenient for achieving process design goals, since the object is known to be surface in machining or assembly process, but not zero-dimensional objects on the plane. It represents a mathematical model of a machine-building part consisting of the basic elements of the form, which can be used in the automated development of the technological process of machining.
Structural and intelligent scheme of navigation system of a ground-based mobile robot for forming a traffic route
Authors: Sharafutdinov A A , Timasheva A Y
Published: July 2020

At the beginning of Russian studies on the task of creating mobile ground fire robots for use in extreme situations in late 1980, it was justified by the fact that firefighters need protection when dealing with the consequences of accidents in areas with high levels of radioactive pollution. The use of fire robotics was increase because of a large number of technogenic accidents. There was a need for use of fire ground robots, where emergency situations, fire, and technogenic accidents arise because it’s dangerous for the life and health of firefighters and people. Fire mobile ground robot is an automated self-propelled technical device which does given commands of human and other actions without human. People use this robot at the accident on area, where is dangerous for the health of firefighters things are situated like oil, nuclear, chemical objects. Now we are considering a structural and intelligent navigation system of fire mobile ground robot, in which a structure of fire robot must create a good way to the center of ignition, control parameters of motions, track own location for safe navigation and improvement tactical of opportunities of the firefighters. The introduction of a fire mobile ground robotics device is needed for an increase in the tactical capabilities of fire detachments during the extinguishing of the fire. The goal is to the definition of tasks and development structural and intelligent scheme of the navigation system of fire mobile robot for the shortest path to fire and extinguish a fire.
Underground storage facilities for helium concentrate in porous medium
Authors: Golovachev A O , Starokon I V
Published: July 2020

The gas of many fields in Eastern Siberia (Chayandinskoye, Kovyktinskoye, Sobinskoye, Chikanskoye, etc.) has a complex component composition with a high helium content. In order to realize the advantage of a unique raw material base, it is necessary to put into practice solutions for the industrial implementation of technologies for the extraction of helium, storage and transportation. One of the directions for the solution of these problems is the creation of temporary underground storage of helium concentrate in a porous medium next to gas chemical plants. This will ensure supply flexibility and reduce helium losses. The global demand for helium is continuously increasing from year to year and in the long term, a favorable situation will emerge on the global helium market for Russia, a positive effect from which can be achieved, provided the benefits of the raw material base are realized. A positive effect means not only the monetary effect, but also takes into account the formation of prerequisites for the development of new spheres of influence: access to new trading platforms and sales markets, the development of high-tech industries, basic and applied sciences, etc. In order to realize the advantage of the raw material base, Russia needs in a fairly short period of time to put into practice the decisions on the industrial introduction of gas separation technologies and underground helium storage.
Identification of transition processes parameters in flotation machine by computer vision
Authors: Zatonskiy A V
Published: July 2020

The efficiency of potassium fertilizers production needs to improve industrial control systems because the fertilizers are very important for agriculture and economy all over the world. Now a control of flotation quality is made by a visual operator’s observation, and a human factor could influence on the results. This paper is about of researching of foam recognize algorithms based on determination of flares from bubble surfaces. Statistics of flares are used for determination of parameters of transition processes in the flotation machine. A method based on bubble flares detection instead of bubble borders recognition. The method allows recognizing bubbles even on a surface of specific potassium foam, non-contrast, solid and color. This research solves the tasks of an optimal binarization threshold approximation, foam driver imagination exclusion, transition process detection. The optimal threshold is developed from medium frame luminosity quite linear. The foam driver can be excluded from the frame by specific character of luminosity trend. The transition process leads to change of bubbles count easy detected by software. A time of processing is about 15-30 ms per frame. Thus, the method can be used as in alarm systems, so in control systems on decision support systems.
Methods for control of crude oil refinery unit
Authors: Tugashova L G
Published: July 2020

We have reviewed the features of the oil rectification process in the low-power crude oil refinery unit. The features of heat removal by intermediate pumparound in comparison with a large-capacity unit have been distinguished. The input and output parameters of the object have been selected. The possibility of representing a multi-loop controlled object as single-channel objects using the EOTF method of effective transfer functions has been reviewed. To improve the quality of unit control, it has been proposed to use the model in practice. For this purpose, a dynamic Hammerstein model for the low-power crude oil refinary unit has been developed to identify the nonlinear part. The proposed model allows studying the influence of various effects (live reflux consumption, diesel oil consumption and superheated steam consumption) on the controlled parameters (points of the temperature profile of the atmospheric tower). The Matlab/Simulink software has been chosen as the tool for implementing the model.
Research of long-term stability of the near-wellbore zone
Authors: Aliev M M , Baiburova M M , Ismagilova Z F
Published: July 2020

The authors used the criterion of short-term rock strength, transformed for the case of long-term strength in order to assess the long-term stability of the borehole wall and determine the permissible pressure in the wellbore. The long-term strength criterion is written according to the method of P.P. Balandina. As a result of the study, it was proved that the determination of the long-term strength of a rock is reduced to a decrease in the values of the short-term strength limits. A curve of the long-term strength of an inclined well is constructed according to a generalized dependence. The expression is obtained that allows determining the time of long-term strength.
Warm insulation of exhaust pipe when taking gas from the “dome - separator” installation from large depths
Authors: Chiglintseva A S , Nasyrov A A , Chiglintsev I A
Published: July 2020

The article describes the impact of the use of polyurethane insulation on the tubes sclerosis by hydrate when gas is taken from the “dome-separator”, installation that designed for emergency hydrocarbon collection at the bottom of the ocean. Such an installation collects hydrocarbons directly above the breakthrough point at the bottom of the ocean, and their transportation is carried out through pipes to the collecting vessel. Currently, in the conditions of the development of the Arctic shelf in order to increase the level of oil production, such breakthroughs can cause enormous damage to the ecosystem, in particular, in the Arctic Ocean, since living organisms that exists in the harsh conditions of these latitudes are more sensitive to changes in the environment. But during the passage of gas through the exhaust pipe in the presence of moisture and corresponding thermodynamic conditions, a hydrate formation process occurs. This phenomenon can cause the pipeline to overlap and impede the normal operation of the selection of hydrocarbons from great depths. To prevent these consequences, work suggests possible options for warming the pipeline. It is shown that sclerosis of a pipe extending to great depths can be prevented even with small values of polyurethane foam insulation.
The Effect of Giving Okra (Abelmoschus esculentus L.) Juice on HDL Levels in the Blood Serum of Wistar Strain Rats Fed High-Fat Feed
Authors: Alifah Rizqi Nur , Peniati Endah , Rudyatmi Ely , Setiati Ning
Published: July 2020

Cardiovascular disease is the biggest cause of death in the world with the number of deaths reaching 17.7 million people (31% of the total number of deaths). The main cause of cardiovascular disease is a disturbance in the function of the heart and blood vessels caused by atherosclerosis due to the deposition of cholesterol in artery walls. High Density Lipoprotein (HDL) functions to transport free cholesterol contained in the endothelial peripheral tissue to HDL receptors located in the liver so that it can be processed to be used as bile. Therapy to increase levels of HDL in the blood using okra juice (Abelmoschus esculentus L.) can be done in rats that have been given high-fat feed. The purpose of this study was to determine the effect of okra juice (Abelmoschus esculentus L.) on HDL levels in rats fed high fat. The study was conducted with giving okra juice (Abelmoschus esculentus L) with dosage difference of 1500 mg/kg bw, 3000 mg/kg bw and 6000 mg/kg bw. The research design used was complete random design with post-test randomized group design with a number of replications 5. Testing of HDL levels was carried out by the CHOD-PAP (Cholesterol Oxidase Para Aminophenazone) method. The research data were analyzed using one-way Anova followed by LSD tests. The results of the study giving okra juice (Abelmoschus esculentus L.) to HDL levels by induction of high-fat feed at a dose of 6000 mg / kg body weight were significantly different from lower dosage. Conclusion, okra juice (Abelmoscus esculentus L.) has a positive effect on increasing HDL levels..
Environmentally friendly production method of virgin coconut oil using enzymatic reaction
Authors: Harimurti Sabtanti , Rumagesan Rizka Meilisa , Susanawati
Published: July 2020

Virgin Coconut Oil (VCO) has been known in Indonesia since a decade ago. This oil is made from coconut milk using unheated method, such as enzymatic, physical, and chemical method. The VCO has been proofed to have many health benefits such as for treatment of hyper-cholesterol, diabetes, viral and bacterial infections. Also, the oil has been utilized in the cosmetics industry for beauty skin care. In the increase of VCO demand for pharmaceutical industry, this study was conducted to find the method for VCO production using an environmentaly friendly process. The environmentally friendly process was conducted to maintain the sustainable environment. This paper deals with the enzymatic method of VCO production. The enzyme was obtained from fresh pineapple juice that is proofed contain bromelin. The enzyme will cleave the polypeptide bond of emulsifying agent in the coconut milk. Further, the oil will be separated and then collected as the VCO. During this work, the amount of the fresh pineapple juice varied to measure the rate of VOC production. Based on the observation during the production, it is found that the increase of fresh pineapple juice added increases the VCO production.
Smart Laboratory Based On Internet Of Things In The Faculty Of Electrical Engineering, University Of Muhammadiyah Sidoarjo
Authors: Sulistiyowati Indah , Sugiarto Arif Rachman , Jamaaluddin Jamaaluddin
Published: July 2020

Technology continues to grow from year to year that aims to facilitate human work or automation of a system. In this case, the concept of smart laboratory is applied in the laboratory room of Electrical Engineering Faculty of Muhammadiyah University of Sidoarjo by utilizing temperature sensor. This application is used to determine the room temperature as well as the proximity sensor to know the person entering and exiting the room. The sensor is controlled by the NodeMCU microcontroller board to make the system work automatically. For example if someone goes into the room the lights will light up and adjust the temperature with the number of people who are indoors. By applying the internet of things, the system can monitor and control via smartphone updated on realtime firebase databases so that it is not limited by distance because it uses the internet network.
Design of Pothole Detector Using Gray Level Co-occurrence Matrix (GLCM) And Neural Network (NN)
Authors: Sutrisno Imam , Syauqi Albiyan Wanda , Hasin Muhammad Khoirul , Iskandar  , Rahmat Mohammad Basuki , Asmara I Putu Sindhu , Suwondo I’ie , Ardiansyah  , Wiratno Daviq , Setiawan Edy
Published: July 2020

Roads are land transportation infrastructure that covers all parts of the road. Roads with bad conditions will interfere with the achievement of activities to a destination. The situation also includes damage to the road surface in the form of holes. To overcome this, in this Final Project a hole detector was detected in the road using the Gray Level Co-occurrence Matrix (GLCM) and Neural Network (NN). The tool detects holes in the surface of the road using a camera by walking along the road being examined. The camera is used instead of the eye to detect road surface damage. The method used to detect holes is the GLCM. The GLCM method produces several features, namely entropy, contrast, energy, homogeneity, and correlation which will then be processed using a NN to produce a decision whether there is a hole or not. In addition to knowing where the location of the damage is equipped with GPS (Global Positioning System). The results of image feature extraction using the GLCM and road classification using NN can be used in the hole detection process. Testing is done using a car prototype that is monitored through the computer. The percentage of successful hole detection is 86.6% using 10 hidden. When a hole is detected the device manages to take a picture, then sends the hole coordinates to the server.
Big Data Analytics Technology Capability and Data-Driven Decision Making in Malaysian Higher Education Institutions: A Conceptual Framework
Authors: Ashaari Mohamed Azlan , Amran Azlan , Ahmad Noor Hazlina , Bakri Hazrieffendy , Nazri Shahrizal
Published: July 2020

In the era of big data, many organizations are aiming to become more data-driven and increase their decision-making efficiency. Nevertheless, there is an insufficient investigation that explores the antecedents of data-driven decision making (DDDM) in the context of Malaysian Higher Education Institutions (HEIs). Therefore, the study examines existing literature and utilises the Big Data Analytics Technology Capability (BDATC) dimensions such as connectivity, compatibility and modularity to conceptualize a DDDM framework. The study utilises Resource-Based Theory (RBT) to highlight the key dimensions for BDATC and how these dimensions are being integrate in order to establish effective DDDM for excellent performance. The antecedents of DDDM is a relatively new approach that is documented in literature, where literature seems to be diversified in terms of offering theoretical and conceptual frameworks, together with a model that Higher Education Institutions (HEIs) can utilize. The study chooses HEIs that undergo Malaysian Research Assessment Instrument (MyRA) as the focus of investigation. The data was collected from the key informants of Malaysian HEIs. In conclusion, the contribution of the study is to highlight the influence of BDATC for DDDM to attain better performance of HEIs in Malaysia.