bluuebunny/crossref_metadata_2025 huggingface dataset:
Characterization of Sulfited Fat From Limed Hides Fleshing as a Leather Fatliquor
Authors: Sugihartono  , Rahmawati D , Priatni A
Published: November 2019

The limed fleshing is generated in the beam house process, is the largest amount of waste, rots easily and causes a pungent smell that pollutes the environment. The use of limed fleshing in fatliquor is an effort to suppress the occurrence of pollution. The purpose of this study is to determine the physico-chemical properties of fatliquor from limed fleshing. Delimed fleshing with ammonium sulfate and water on a rotating drum. Fat was extracted from delimed fleshing using the wet rendering method and purified using n-hexane. The fat from delimed fleshing was characterized and then processed into a fatliquor. The fatliquors is prepared by reacting fat with aqueous sodium bisulfite (0.5, 1.0, 1.5, 2.0, and 2.5 mol/kg based on fatty matters) at a temperature of 85° C for 2 hours. The results showed that fat from limed fleshing can be used to produce fatliquors substances. Based on the physico-chemical properties, the best fatliquors agent is prepared by treating sodium bisulfite with 2.0 mol/kg based on fatty matters.
Simulation Study of Kalman-Bucy filter Based Optimal Yaw Rate Control System for Autonomous Tractor
Authors: Purbowaskito W , Telaumbanua M
Published: November 2019

Unstructured agricultural field environment and varying jobs need to be done by a tractor bring the autonomous tractor subjected into the changes of its system dynamics. Due to this condition, development of autonomous tractor yaw rate dynamics control system is a challenging study. An observer based optimal controller is employed to control the autonomous tractor yaw rate dynamics control system in this simulation study. Linear quadratic regulator (LQR) is used as the optimal control algorithm, while the Kalman-Bucy filter is used as the state observer of the autonomous tractor. This Kalman based LQR method works by combination of optimization and state estimation approaches. Based on the proposed method, the LQR controller provides satisfactory yaw rate controller results. The yaw rate estimation error which is ranged at ± 0.05 deg/sec proves that Kalman-Bucy filter provides satisfactory estimation results.
Performance Test of a Diesel Engine with Biodiesel from Kemiri Sunan (Rutealis sperma.)
Authors: Muhaemin M , Kramadibrata A M , Nurjannah S , Makarim I , Saukat M , Herwanto T , Prijatna D , Handarto  , Rosalinda S , Mardawati E , Natawigena W H
Published: November 2019

With decreasing fossil oil reserve, alternative plant-based fuel become more important. One of the source of such fuel is kemiri sunan (rutealis trisperma). Kemiri sunan has an advantage that it is not competing for food use. Biodiesel from kemiri sunan needs to be tested on diesel engine. The objective of this research was to test the performance of a diesel engine with a mixture of biodiesel from kemiri sunan and fossil-based diesel fuel. This study was conducted in an experimental-decriptive manner by using several level of mixture of biodiesel from 0% (B-0) to 70% (B-70) using dynamometer. Measured parameter were torsion, power, fuel consumption, thermal efficiency and flue gas emission. Experimental results showed that biodiesel from Kemiri sunan can be used in unmodified, conventional diesel engine with maximum content of 20% (B20).
A dynamic botanical air purifier (DBAP) with activated carbon root-bed for reducing indoor carbon dioxide levels
Authors: Hashim N H , Teh E J , Rosli M A
Published: November 2019

Indoor Air Quality (IAQ), is important in buildings because it can affect an occupant’s health and productivity. Carbon Dioxide (CO2) is a main indicator of IAQ. 4 decades ago, researchers discovered the potential for indoor plants to remediate indoor air pollutants via photosynthesis. This study investigates the CO2 removal rate when a Maranta Leuconeura is paired with activated carbon (AC), as well as a mechanical ventilation system that draws air into its root-bed making it an active system (DBAP). The results were compared to passive systems i.e plant with AC, potting soil etc. The study was conducted in a 0.7 m3 Plexiglas chamber with initial CO2 concentrations of 1500±100 ppm while initial temperatures ranged between 24 ± 2°C for a duration of 6 hours continuously. Results showed, the DBAP reduced CO2 levels by 40.90% while a passive plant with AC only, was able to lower CO2 levels by 15.20%. The other passive systems did not reduce CO2 levels. All systems were able to raise humidity and reduce temperature in the chamber, with the exception of the DBAP, which slightly increased the temperature in the chamber.
Recovery of silica and carbon black from rice husk ash disposed from a biomass power plant by precipitation method
Authors: Thongma B , Chiarakorn S
Published: November 2019

In Thailand, air pollution caused by rice husk ash (RHA) disposed of biomass power plants has become more serious concerns. Recovery of silica and carbon black from RHA is an attractive solution to solve this problem. This study aims to extract silica and carbon black from RHA, which was burnt in a stoker firing at 800-850 ºC, by a precipitation method. RHA was dissolved in 2M sodium hydroxide at 105 ºC for 2-5 h. After that, carbon black was filtered out from sodium silicate solution. The solution was then precipitated by sulfuric acid to produce precipitated powder. The extraction parameters such as types of RHA (fly ash and bottom ash), dissolution time and precipitation time were studied. The precipitated powder was characterized by XRF for elemental analysis, XRD for crystallinity and BET for porosity analysis. The results showed that dissolution for 4 h and precipitation for 1 h could produce precipitated amorphous silica with the purity of 95-99 % SiO2. The yields of silica extracted from bottom ash and fly ash were 85.66 wt% and 72.33 wt%, respectively. The yields of carbon black extracted from bottom ash and fly ash were 14.34 wt% and 27.67 wt%, respectively. The surface area of silica extracted from fly ash (410.72 m2/g) was higher than that of the silica extracted from bottom ash (296.98 m2/g).
Mineral resources of the south of Kemerovo region (Tashtagol administrative district)
Authors: Gutak Ja M , Gutak O Ya , Tokarev V N
Published: November 2019

Tashtagol administrative district of the Kemerovo region is located in its southern part occupying the up-streams of the Mras-su and the Kondoma rivers. Deposits of the Late Precambrian (Vendian) and the Paleozoic (Early Cambrian), which are relics of oceanic carbonate platform, youthful and mature island arc, form geological structure of the territory. The sequence is broken through by intrusive bodies, of which plagiogranite intrusions of the Late Cambrian (skarn deposits of iron ore) are of the greatest impact for metallogeny of the region. Analysis of regional mineral resources begins with a survey of reserves and resources of ferrous metals (iron, manganese), then resource potential for noble metals and non-metallic minerals is considered consistently. Iron has historically been the main mineral resource of the region, but as of the present, prospects remain only for the Tashtagolskoye deposit. The gold placers has practically been exhausted, development of the Selezenskoye manganese deposit has been stopped due to complexity of its geological structure. Other diverse deposits of metallic and nonmetallic minerals are practically not explored, framing reserves for the future.
Intellectual property as an intangible asset of coal mining enterprises
Authors: Nikitenko S M , Mesyats M A , Korobeynikova E V
Published: November 2019

The article is devoted to the analytical study of the value of intellectual property in the activities of coal mining enterprises (companies) of Kemerovo region. The authors test the hypothesis that knowledge-intensive technologies are considered by coal mining enterprises (companies) to be their intangible assets and should constitute a significant share in the overall structure of assets.
Development and substantiation of parameters of multifunctional mobile roof support
Authors: Klishin V I , Malakhov Yu V
Published: November 2019

The paper describes the technical parameters and requirements for the basic element of longwall systems for mining thick and steeply dipping seams and for extraction of coal from safety pillars. The proposed multifunctional mobile roof support ensures safe and efficient operation of mines in complicated geological conditions. The authors offer classification of the performance capabilities of the multifunctional mobile powered roof support.
On improving the energy efficiency of electric mining excavators
Authors: Malafeev S I , Malafeev S S
Published: November 2019

The main directions of increasing the efficiency of using energy resources in mechatronic systems of mining excavators are considered. The main factors affecting the energy efficiency of excavators in quarries are the characteristics of the rock, the quality of the explosive preparation, the organization of the mining and transport complex, the characteristics and condition of the equipment, the geological conditions, the qualifications of the driver, etc. Improving circuit solutions and components allows to change ideological principles of the construction of mechatronic systems and provides the possibility of a significant increase in energy characteristics. The highest energy efficiency is achieved when using AC drives with asynchronous motors for excavators. The current issues of improving the power supply system and reducing the loss of electrical energy in the supply networks are considered.
A new approach to predictive modeling of dragline equipment
Authors: Gerike P B , Klishin V I
Published: November 2019

This paper is an attempt to generalizing analytical data on vibration parameters of powered mechanical equipment of draglines with a view to solving the problem connected with development of unified diagnostic criteria for short-term degradation modeling aimed at prediction of technical degrading of test objects. The goal of this study is to colligate experimental data on parameters of vibration generated in operation of dragline equipment with intent to classify signs of the equipment defects into reference groups for convenient formalization. This research used the expanded range of diagnostic methodologies, including spectral analysis in broadened frequency and dynamic ranges, analysis of runout characteristic, excess and analysis of spectrum envelope. The research findings prove efficiency of the proposed methodology for normalization of mechanical vibrations and the algorithm for creation of unified diagnostic criteria usable as basic elements in the system of mining machinery maintenance by the actual technical condition.
Study of the properties of flux cored wire based on dust from gas cleaning plant of ferrochrome for surfacing on the cutting bodies of tunneling machines
Authors: Kozyrev N A , Usoltsev A A , Kryukov R E , Belov D E , Prudnikov A N
Published: November 2019

The possibility of producing flux-cored wires based on dust from gas cleaning plant of aluminum production, silicon and aluminum powders (as a reducing agent) and gas cleaning dust from ferrochrome production (as a reducible component – chromium oxide) was studied. In the laboratory conditions samples of flux-cored wires were produced, surfacing, hardness measurement, abrasion rate and metallographic studies were performed.
Low-pressure hydraulic impact on the coal massif and the purpose of its application
Authors: Zykov V S , Filatov Yu M , Ivanov V V
Published: November 2019

The purpose of the application of low-pressure hydraulic impact on the coal massif is discussed. A brief description of the coal structure is given – from molecules to large structures separated by endogenous and exogenous cracks. The fractured porous structure of the coal seam is described. Information on micropores, transitional and macropores, systems of exogenous cracks is given. The results of the performed studies indicate the possibility of blocking gas in coal pores with pumped water and preventing high pressure of free gas near the plane of seam exposure, which opens up the prospect of hydraulic action on the massif to prevent gas accumulation in the workings and sudden outbursts of coal and gas. It was established that the most effective mode of injecting water into the seam to achieve this goal is low-pressure water infusion, and its parameters were defined by experimental studies. The results of theoretical and experimental studies showed that with low-pressure water infusion, coal becomes less durable and elastic and more plastic. The coal massif adjacent to the mine or contoured by several mine workings loses the ability to brittle fracture, and the arising loads are largely realized in the form of plastic deformations that do not lead to rock bumps.
Improvement of degasification efficiency by pulsed injection of water in coal seam
Authors: Plaksin M S , Rodin R I
Published: November 2019

The authors discuss the known degasification methods and their efficiency. The ways of stimulating productivity of coal degassing are proposed. In particular, stimulation of methane recovery by water injection in coal seam in pulsed mode for generation of additional surface of gas release is described. Prediction of methane recovery relies on the modern knowledge on state of methane in coal.
The formation procedure of scenarios on mining waste processing: environmental and social aspects
Authors: Shorokhova A V , Novichikhin A V , Yuryeva E N , Bystrov V A
Published: November 2019

The formation procedure on scenarios of processing waste generated by mining enterprises was developed. It consists of seven stages and takes into account the design capacity of the enterprise, the chemical composition of a technogenic deposit, remoteness from residential areas and consumer requirements for product quality. The proposed procedure combines technologies for waste processing and land reclamation in accordance with the regulatory requirements of the legislation, consumers and society interests. The developed procedure ensures the reduction of environmental damage as a result of the technogenic impact of production and the improvement of the life quality of the population in mining areas.
Double layered home-based enterprises: case study in Kampung Lio, Depok
Authors: Putri F E , Adianto J , Turpuk Gabe R
Published: November 2019

Struggling to fulfills economic needs in between the rapid growth of urbanization, one of the trend happened in Kampung Lio, Depok, Indonesia is to rely on informal economic activities such as Home-Based Enterprises (HBE). As HBE become an important topic in informal housing and economic activities, the existing literature has discussed HBE and its implication to spatial strategies. However, in Kampung lio a unique case has risen where the locals are renting HBE for another layer of HBE, making a double-layered HBEs occurred in one housing. This type of HBEs limited movement space for domestic activities inside the house. However, since the activities always happened, the activity spaces will appear with various ways of modifying the use of space inside and through the house. By doing site observation and empirical data collecting, this research aims to examine how the locals modifying domestic activities and spaces and using a certain type of HBEs until the double-layered HBEs emerged. The expected results are to understands how the houses are modified and the activities pattern as they adapt to the change of living spaces in a double-layered HBE in Kampung Lio. This later could be used to serve as the inspiration for designing low-income housing with home base enterprise and public spaces in the urban kampong.
Linkages between capital structure policy and Malaysian real estate investment trusts property portfolio enlargement
Authors: Jalil Rohaya Abdul , Sapri Maimunah , Ping Tiong Chai
Published: November 2019

The superiority of real estate investment trusts (REITs)’tax regime which gives tax waive provided REITs distributed 95 percent of earning to unit holders, had limits its potential to expand in term of its property portfolio enlargement (PPE). This study aims to determine the links between capital structure policy of Malaysian REITs (M-REITs) and PPE agenda. Adopting a descriptive analysis and deployed a ten years data of M-REITs, this study reveals that there is an opposite relationships between debt-to-equity ratio (D/E) and the average increase percentage of property total value (AIPPTV). This study indicates that as D/E grows, there will be a resistance in PPE agenda. This explains the poor size of M-REITs properties total value, which 58 percentage of it is less than RM1 billion. This study suggests M-REITs should plan their PPE financing option as the cost of debt (kd) advantage when lower interest rate imposed. There other factors influence REITs PPE such as the quality and the performance of properties, properties diversification in term of property type, geographical and size, institutional ownership of the property, externally managed managers and issue of cash flow of majority unitholders in REITs.
Factor of building orientation direction as determinant the thermal comfort quality
Authors: Rilatupa James
Published: November 2019

Generally determines the comfort quality of rooms in the building is due to the air temperature caused by solar radiation, humidity and air movement inside the building. A comfortable room influenced by the volume of space, wide opening in the wall, use of materials, patterns of shadows and vegetation around the building. But the specific factors that can impact directly on the quality level of comfort rooms in the building that is the building position with a different orientation direction. Standard guidelines thermal comfort for the humid tropics to be achieved is at the limit of 24°C < T <26°C. Thermal comfort research was conducted in a pilot house in the Faculty of Engineering, Christian University of Indonesia (FT-UKI), Cawang, East Jakarta. The thermal comfort research lasts for 2 (two) months. Indoor air temperature in the pilot house of FT-UKI does not meet the requirements of thermal comfort standard for each building orientation direction during the research. But on average, building orientation direction were relatively convenience in this research is northwest - southeast, it also minimizes design of engineering and construction to the surrounding environment.
Electrodecolorization of remazol violet with graphite electrodes : Application Of Statistical Designs And Regression Analysis
Authors: Fatimah S , Wiharto W , Fatoni R
Published: November 2019

The electrodecolorization process of the remazol violet (RV) dye using graphite as an electrode has been done well. The RV is one of the synthetic dyes that are often used in the textile, paper, and other coloring industries. The parameters used in this study were RV concentration (20 mg/L-100 mg/L), pH (2-10), electrodecolorization time (2 minutes-20 minutes), volume H2O2 (0 mL-12 mL) and voltage (2 V-12 V). Based on experiments of 20 data that have been investigated then made the design of statistical model. The application of statistical design and regression analysis in this research is tested the feasibility, then tested by building data based on experimental data as amount 87319 data. This design is supported by ANOVA test, RMSE value, and ADD as the strengthening of the resulting model. Based on this study, the optimum conditions for pH parameters, electrodecolorization process time, H2O2 volume, RV concentration and voltage are 4;10 minutes;10 mL;20 mg/L; and 2V with a percentage of decolorization of 83.50%. The p-value results of the ANOVA test, the RMSE value, and ADD sequentially from this study are 0.002; 0,000; 0.201 so that the resulting model can be recommended for the application in dye waste management.
The effects of catalysts type, molar ratio, and transesterification time in producing biodiesel from beef tallow
Authors: Coniwanti Pamilia , Surliadji Larasati , Triandini Dita
Published: November 2019

The high level of air pollution from combustion emissions and the lack of petrodiesel feedstock sources becoming a problem that can not be ignored. Therefore, to overcome these problems researchers developed alternative fuels that are environmentally friendly such as biodiesel. Biodiesel is produced through a transesterification reaction that reacts vegetable oils or animal fats with an alcohol assisted using an alkaline or acidic catalyst. This research was conducted to find out the influence of catalyst type, molar ratio of alcohol and fat, and transesterification reaction time to the yield and the characteristics of biodiesel produced. The transesterification reaction takes place at 65°C, and the catalyst weight is 1.5% by weight of beef tallow. Variations of catalyst type are NaOH and MgO, methanol molar ratio of 6:1, 9:1, and 12:1, and transesterification time for 1 hour, 2 hours, and 3 hours. The results showed that the optimum condition of the reaction using NaOH catalyst, molar ratio 6:1, and time for 1 hour with yield value 43,64%, density 0,84392 gr/ml, viscosity 5,7057 cSt, flash point 113,5°C, calorific value 9296,9 cal/gr, acid number 0,00992, and sulfur content 39 gr/kg.
Transit oriented development of light rapid transit palembang
Authors: Della Rhaptyalyani Herno , Pataras Mirka , Adhitya Bimo Brata
Published: November 2019

Light Rapid Transit (LRT) is one of the public mass transport which is necessary to break the problem of the urban transportation system in developing countries. LRT has many promises in the development of the city, in addition to solving the transportation problem is an increase in economic activity. This current case study of the paper is Palembang, one of the cities in Indonesia; the government develops mass public transport to solve the transportation problems. The government planned LRT construction to optimize the development of demand for public transport. This paper studies the concept of LRT construction by the development of Transit Oriented Development (TOD), include the development of estate management at stations area. The concept of Transit Oriented Development (TOD) for the develop stations location to spur the growth of economic activity around the locations. This concept needs to analyze the socio-economic impact study to determine the feasibility of developing TOD level especially at stations and the land use impact of the construction of LRT. Survey of Palembang City land use shown that 23 location can use as stations. The analysis by the impact of the socio-economic condition, land use, and feasibility of LRT construction; present that there are 13 locations can be used as TOD and shown as stations of Palembang LRT.
Prediction of carbondioxide emissions from crude palm oil industry case study: Palm Oil Mill X in Kampar Regency of Riau Province
Authors: Ayo Sasmitra , Reza Muhammad
Published: November 2019

The effects of solar radiation that are trapped in Earth’s atmosphere, because these events take place repeatedly, then there is accumulation of solar radiation in the earth’s atmosphere that causes the temperature on earth to become warmer. One of the industrial sectors that contribute to greenhouse gas emissions in Indonesia is the palm oil mill. Indonesia is one of the largest producers of crude palm oil in the world. Palm oil agribusiness invites national and global attention related to environmental issues because they’re one of major contributor to greenhouse gas emissions. The research will be conducted on one of the existing Palm Oil Mill in Riau Province. The Mill that sampled is located at Kampar Regency. Primary data was obtained through field observation and interview with company employee. While the secondary data is obtained from the company’s regular reports and the relevant literature. From this research, the total emissions generated from the palm oil mill X are 1,405.83 Kiloton CO2 equivalent/year, with the largest emissions coming from the use of boilers in POM X which account for 81 % of total emissions of 1,138.77 Kiloton CO2 equivalent/year.
Level of service for roads with motorcycle lane or without motorcycle lane in Denpasar
Authors: Mulyadi Agah
Published: November 2019

Denpasar is the capital of Bali and the main gateway to the island. The increasing number of vehicles in Denpasar City reach 7 % annually. The negative impact of the high number of motorcycles is decrease of road performance, especially causing low travel speed and high potential of traffic conflict. To minimize that problem, motorcycle lane was applied to make homogeneity movement of motorcycles in the city of Denpasar. The methods by analysed of road performance on the motorcycle lanes by using MKJI 1997 (Indonesia Road Capacity Manual). The analysis shows that the application of motorcycle lane has an influence to improvement road traffic. That is indicated by the VCR value for road with motorcyle lane facilities are 0.42 and 0.54. Meanwhile without motorcycle lane is 0.34 and 0.43. The level of service on Puputan Rd, Cok Agung Tresna Rd and Sudirman Rd (north direction) is “B”. Its mean traffic flow is stable, but travel speed began to be limited by traffic conditions. Meanwhile on Sudirman Rd (south direction), the level is service mostly is C. Its mean Traffic flow is stable, but the travel speed and vehicle movement is controlled.
Stabilization of clay shale using propylene glycol and laterite on california bearing ratio
Authors: Rahayu Wiwik
Published: November 2019

Clay shale in natural condition has a very high strength. Due to weathering caused by exposure with air and water, its strength will decrease significantly. Propylene glycol is established as an effective shale inhibitor in water-based muds. The effect of mixing propylene glycol with clay shale to increase its strength needs to be discussed. Sample of Citereup clay shale were mixed with propylene glycol with ratio 0.3, 0.5, and 0.7 of its optimum water content. California Bearing Ratio test have been performed to determine clay shale bearing strength. Result indicates that clay shale stabilization using 30% propylene glycol can increase strength in unsoaked condition. Laterite soil mix also give additional bearing strength to clay shale specimen.
Experimental and analytical study on composite connection with cold-formed steel of double channel sections
Authors: Firdaus Muhammad , Saggaff Anis , Tahir Mahmod , Ngian Shek Poi , Sulaiman Arizu , Salih Musab Nimir
Published: November 2019

The opportunity of Cold-Formed Steel (CFS) as an alternative construction material is still worth to be considered. The amounts of research concerning using this material is the evidence that the use of CFS is getting more acceptable. However, the studies of CFS as part of composite joint is yet to be established. This paper presents the use of 10mm thick hot-rolled gusset plate slipped between double lipped C-channel arranged back-to-back to form the proposed composite connection. Two specimens with and without seat angle were tested until failure. The weakness of thin plate behavior at the joint area was reduced by means of angle stiffener placed at the column web. The calculation procedure was developed due to limited design rule in Eurocode for this connection type, and compare with the experimental results to obtain the relationship between these two methods. It can be concluded that the use of seated angle has contributed to an increase in connection capacity.
Experimental investigation of flexural behaviour of U-shaped concrete subgrade panel
Authors: Kamarudin Nur Aiza Shuhada , Mohamed Azman , Nor Hasanan Md , Hainin Mohd Rosli , Khalid Nur Hafizah A. , Mohd Satar Mohd Khairul Idham
Published: November 2019

In pavement design, subgrade condition is one of the criteria to be looked into. Poor subgrade made up of problematic soils could cause the soils to move upwards, known as heaving condition. The U-shaped subgrade concrete panel (USSP) is introduced in this study to help in reducing soil heave condition for low bearing capacity soils. This paper presents a description of the mechanical properties for the USSP flexural strength through experimental works. Flexural strength of USSP for 6 different sizes are compared with the control panel sizes of 150 × 150 × 50 mm, 300 × 300 × 50 mm and 600 × 600 × 70 mm. Modified supports of square-cross section steel blocks with the size of 45 × 45 mm were used in the 3-point flexural strength test to obtain the flexural strength of the control panel. The USSP sustained more flexural load compared to control panel ranging between 7 % to 88 %. The result of the flexural strength test shows that the introduction of the webs to USSP allows the USSP to sustain higher flexural load and induce lower modulus of rupture (MOR) compared to the control panel.
Design and realization bandpass filter with square groove defected at 3 GHz
Authors: Praludi Teguh , Taryana Yana , Sulaeman Yaya , Kurniawan Dayat
Published: November 2019

In this paper, microstrip structure is developed to realized a. Bandpass filter at 3 GHz of the center frequency with 200 MHz bandwidth. The filter based on the hairpin method with used square groove technique at the resonators. It has compact in the size and also have good responses for insertion loss, return loss and bandwidth. The design methodology is present with design, fabrication and measurement the prototype used VNA. The filter designed for simulation and realization with substrate Roger 4350B with permittivity 3.48, loss tangent 0.0038, and thickness 1.524 mm using five poles resonators. The simulation and optimization is done using ADS 2011. Responses Insertion Loss at 3 GHz -0.7 dB and the Return Loss at -29.9 dB.
Optimization and estimation framework of smart farm based on spatial data mining and geostatistics
Authors: Kodong Frans Richard , Abdollah Mohd. Faizal , Othman Mohd. Fairuz Iskandar
Published: November 2019

The development of integrated information systems in the field of rice plant has become an urgent need for policy makers at both provincial and national levels, specialized in developing countries such as Indonesia. At this time, data related to rice avaibility is still spread across several agencies and difficult to access easily and quickly to support strategic and rapid decision making. This data is the level of fertility of rice plants, fertilizers and water content at certain locations and times. Fertilizers, new superior varieties and water content are production factors that are vital in supporting the efforts to increase national rice production. New superior varieties including hybrid rice are generally responsive to macro fertilizers NPC (Nitrogen-Phosporus-Calcium), where fertilization efficiency and effectiveness is very dependent on local location. The use of fertilizers with excessive doses must be prevented by socializing the right dosage specifically for location and time. The use of fertilizers with high doses of nitrogen also results in plants being more susceptible to plant pests. Based on the consideration of efficiency and sustainability, the use of uniform recommended doses for large areas and not considering the specific conditions of the plant is no longer relevant to be applied. Therefore the distribution of the characteristics of rice and soil at specific locations and times is very important information. Research objectives to develop technology that integrates operational information systems at farmer levels (SMS, GSM or IoT) and information systems in management levels with GIS, Spatial data mining, Kriging Interpolation and Artificial Intelligence systems that have prediction ability and optimization of food security problems, especially rice. Spatial data mining with approached geostatistics used to map the distribution of various factors, Nitrogen, Phosphousr, Calcium and Water content that influence the growth rate of rice plants. The results of this study are a smart farm framework that can estimate and optimize sustainability and availability of rice.
The review of computer aided diagnostic hypertensive retinopathy based on the retinal image processing
Authors: Wiharto  , Suryani Esti
Published: November 2019

Hypertensive retinopathy is a disease caused by acute high blood pressure. Examination of the disease can be done by analyzing the retina of the eye. Analysis can be done automatically by using the image processing of the retina from fundus cameras. The automation model is widely developed by combining a number of segmentation methods, classification algorithms and feature extraction. Unfortunately no one has reviewed a number of existing studies on the diagnosis of hypertensive retinopathy. In this study aims to conduct a review of a number of studies in the period 2010-2018 on the diagnosis of hypertensive retinopathy. The focus of the review is on the method of segmentation, feature extraction, and the classification algorithm used in the diagnostic model of hypertensive retinopathy. The review also includes comparisons of a number of diagnostic models that have been developed, and suggestions for further model development.
Finite element study on rotary friction welding process for mild steel
Authors: Yohanes Yohanes , Abdurrahman Ridwan , Ridwan Abrar
Published: November 2019

The purpose of study is to investigate friction welding of series of mild steel by using Finite element analysis by a 3D model made in order having a proper rotational speed and time friction. This Numerical analysis divided into two categories that is structural analysis, and thermal analysis. Structural analysis process parameters can also have divided 4 kinds that are frictional time, frictional pressure, deformation and rotational speed. The thermal analysis process parameters are dealing with and counted as heat flux, and temperature. Friction welding with three different rotational speeds (2000 RPM, 2500 RPM, and 3000 RPM) & three different friction time (150 s, 200 s, and 250 s) This study used SOLIDWORKS 2016 and ANSYS 17.2. SOLIDWORKS 2016 is the software used for designing work pieces’ geometry while ANSYS 17 is the software is used to analyzed finite element analysis on the work pieces. The second purpose of study is the numerical analysis would be compared with the experimental analysis. The experimental analysis is taken place at friction welding machine in the laboratory of technology production of the University of Riau. Based on the numerical analysis we can summarized that the faster the shaft rotates would resulting the higher the temperature generated, the higher the heat flux generated, & the higher the reduced of length. Also the influence of friction time shown that the longer the time of friction would result the lower the temperature generated, the lower the heat flux generated, the lower the reduced of length value. By compared the numerical and experimental analysis we can conclude that the difference reduced of length data between simulation and experimental happened because on simulation only input the friction pressure, while on experiment friction and forging pressure happened simultaneously. By interpolating the result with the melting point of mild steel (1350 °C ) we can gather the minimum requirement for getting a uniform weld temperature for each friction time, that were; 2650 rpm for 150 s friction time, 2852 rpm for 200 s friction time, & 3034 rpm for 250 s friction time.
Hydrocyclone classification control
Authors: Wieniewski A , Skorupska B , Szczepaniak K , Tomaka W
Published: November 2019

An overview of the classification systems in hydrocyclones in the copper ore enrichment departments at KGHM Polska Miedź SA was presented. In recent years, IMN has been conducting an investment - replacing hydrocyclones with modern HC hydrocyclone solutions - manufactured by ZAM Kęty and IMN. The results of implementing modern hydrocyclones are presented. The important issue is to define relation between values of pressure and/or hydrocyclone feed density and cut point achieved in these conditions for chosen classification node By disposing this relation, implemented to classification monitoring system is possible to maintain cut point value within the range ± 5 % of assumed value by preserving acceptable feed variation in industrial conditions: - change of suspension density ± 20 % in ratio to assumed value, - change of feed particle size d80 ± 15 % in ratio to assumed value.
The Study Of Influence Of Fine Coal Fraction Addition To Coking Blend And Its Partial Briquetting On Coke Quality Parameters
Authors: Rejdak M , Pawłowski P , Rodź A , Ignasiak K , Helt I
Published: November 2019

Paper presents the results of study of influence of fine coal fraction addition to coking blend and its partial briquetting on coke quality parameters CRI and CSR. CRI and CSR are currently the key quality parameters of coke commonly used to assess its technological suitability for blast furnace coke. The raw materials used for the research were coals and fine coal fractions (flotation concentrates) from one of the domestic producers of coking coals. These coals are the basic components of blends used in the domestic coke industry. Studies have shown that increase in the content of flotation concentrates (FC) in the coal blend results in a significant reduction of the bulk density of the coal charge. As a consequence of the decrease in the density of the coal charge, coke reactivity CRI increased and coke strength after reaction CSR decreased. To minimize the adverse impact of FC addition, partial batch briquetting was implemented. Briquetting of the coal charge made it possible to produce coke with qualitative parameters similar to the same blend without the addition of a flotation concentrate and allows to improve the quality of coke produced or to produce coke of the same quality but with a higher share of semi-soft coals
FGX air-vibrating separators for cleaning steam coal – functional and economical parameters
Authors: Blaschke W , Baic I
Published: November 2019

FGX Dry Separators are a construction developed at the turn of the 20th century. It was created in China as a combination of a vertical jet air classifier and a vibration screen with a tapered channel. This structure has been modified (Figure 1). These separators proved to be very effective in deshaling of excavated coal. They are designed to remove as many grains of stone as possible. For this reason, separation is carried out in the thickness range above 2.0 g/cm3. The article describes the structure of dry separator as well as the principle of its operation. The factors influencing the enrichment efficiency and the separation accuracy of feed parameters have also been listed here. Moreover, the technical parameters of the separator which are subject to regulation and influence the course of the separation process have been discussed. Synthetic information on economic efficiency has been provided. The possibilities of application of FGX separators in the systems of existing enrichment plants or as independent processing plants have been presented. There are currently three FGX separators working in Poland. In the Institute of Mechanised Construction and Rock Mining in the Katowice Branch, the bituminous coal of some mines is tested on an installation with a capacity of up to 10 Mg/h. The results of the research confirm the possibility of implementing FGX separators in the bituminous coal mining in Poland. Two separators, with a capacity of about 30 Mg/h, improve the parameters of imported coal intended for individual customers; they are owned by private companies. More than 2000 FGX separators in more than a dozen countries are in operation in the world. They are effective and are referred to as ‘21st century technology’.
Energy Policy of Poland – current status, opportunities, challenges, threats
Authors: Polek D , Niedoba T , Mijał W
Published: November 2019

Energy security is currently one of the most important and widely discussed topics in the country. Over the years, Poland has not developed a coherent energy policy, and the consequences of it are currently being felt. New requirements of the European Union, ending of hard coal resources and its growing imports, weak ratio of energy from RES, no new opencast brown coal mines - this are only few problems of the contemporary energy policy of the country. The article presents the current situation of the power industry, reviewed the applicable laws - domestic and European, and also identified the greatest threats to the country’s energy security.
Role of the clinical learning environment in preparing new clinicians to engage in quality improvement efforts to eliminate health care disparities
Authors: Casey Baretta R , Chisholm-Burns Marie , Passiment Morgan , Wagner Robin , Riordan Laura , Weiss Kevin B
Published: November 2019

Purpose

The National Collaborative for Improving the Clinical Learning Environment offers guidance to health care leaders for engaging new clinicians in efforts to eliminate health care disparities.

To address health care disparities that are pervasive across the United States, individuals at all levels of the health care system need to commit to ensuring equity in care. Engaging new clinicians is a key element of any systems-based approach, as new clinicians will shape the future of health care delivery. Clinical learning environments, or the hospitals, medical centers, and ambulatory care clinics where new clinicians train, have an important role in this process. Efforts may include training in cultural humility and cultural competency, education about the organization’s vulnerable populations, and continuous interprofessional experiential learning through comprehensive, systems-based QI efforts focused on eliminating health care disparities.

Conclusion

By preparing and supporting new clinicians to engage in systems-based QI efforts to eliminate health care disparities, clinical learning environments are instilling skills and supporting behaviors that clinicians can build throughout their careers—and helping pave the road towards equity throughout the US health care system.
Survey of drug information centers in the United States—2018
Authors: Grossman Sara , Nathan Joseph P , Ipema Heather J , Ness Genevieve Lynn , Tierno Holli E , Gabay Michael P , Calip Gregory S
Published: November 2019

Purpose

To provide a current directory of drug information centers (DICs) in the United States and present information about their characteristics, activities and services, and networking activities.

Methods

In February 2018, an electronic 23-question survey was delivered to 118 contacts on a distribution list compiled from previous directories of DICs, responses to listserv messages, and an Internet search. DICs, defined as formal centers dedicated to providing drug information services, including but not limited to responding to drug information requests, were asked questions about their characteristics, activities and services, drug information requests, and networking activities.

Results

The response rate was 79% (93 of 118 DICs). Of the 93 respondents, 82 (88%) met the definition of a DIC and were included in the directory. Of the 82 included DICs, 37 (45%) belonged to a university or college, while 36 (44%) belonged to a medical center or hospital. Seventy percent of the DICs (n = 57) had been in existence for more than 20 years. Of the 81 respondents reporting activities performed at the DICs, precepting pharmacy students (n = 79, 98%) and training pharmacy residents and/or fellows (n = 68, 84%) were most commonly reported. Nearly 90% reported that answering drug information questions was central to the DIC operations. Most DICs (n = 52, 65%) indicated receiving an average of 50 requests or less on a monthly basis. DICs reported a variety of electronic means of communicating with the DIC community, although 16 (21%) of the 77 respondents reported no need to do so.

Conclusion

The survey identified 82 DICs that collectively provide a variety of services to their clienteles. The DIC directory published herein should facilitate networking among DICs.
Prenatal exercise reverses high-fat-diet-induced placental alterations and alters male fetal hypothalamus during late gestation in rats†
Authors: Song Lin , Yan Jianqun , Wang Nan , Wei Xiaojing , Luo Xiao , Meng Kai , Sun Bo
Published: November 2019

Maternal high-fat (HF) diet negatively affects maternal metabolism and placental function. This study aimed to determine whether gestational exercise prevents the effect of HF diet on placental amino acid transporter expression and nutrient-sensing signaling and the fetal response. Pregnant Sprague-Dawley rats were either fed with a CHOW (13.5% fat) or HF (60% fat) diet during gestation and further divided into two subgroups: voluntary exercised and sedentary. Placentae were collected on gestational day (GD) 14 and GD20, and male placentae were used in this study. We found that gestational exercise ameliorated the detrimental effects of HF diet on dams’ adiposity, plasma leptin, and insulin concentrations. Maternal exercise did not influence fetoplacental growth but affected male fetal hypothalamic Leprb, Stat3, Insr, Agrp, and Pomc expressions on GD20. Maternal HF diet decreased placental labyrinth thickness and increased system A amino acid transporter SNAT2 expression, while these changes were normalized by exercise. The activation of placental mechanistic target of rapamycin complex 1/4E-BP1 and LepRb/STAT3 signaling might contribute to the increased placental SNAT2 expression in HF-fed dams, which were reversed by exercise on GD20. These data highlight that gestational exercise reverses HF-diet-induced placental alterations during late gestation without influencing fetal growth. However, maternal exercise altered fetal hypothalamic gene expression, which may affect long-term offspring health.
Beyond classic editing: innovative CRISPR approaches for functional studies of long non-coding RNA
Authors: Awwad Dahlia A
Published: November 2019

Long non-coding RNAs (lncRNAs) makeup a considerable part of the non-coding human genome and had been well-established as crucial players in an array of biological processes. In spite of their abundance and versatile roles, their functional characteristics remain largely undiscovered mainly due to the lack of suitable genetic manipulation tools. The emerging CRISPR/Cas9 technology has been widely adapted in several studies that aim to screen and identify novel lncRNAs as well as interrogate the functional properties of specific lncRNAs. However, the complexity of lncRNAs genes and the regulatory mechanisms that govern their transcription, as well as their unique functionality pose several limitations the utilization of classic CRISPR methods in lncRNAs functional studies. Here, we overview the unique characteristics of lncRNAs transcription and function and the suitability of the CRISPR toolbox for applications in functional characterization of lncRNAs. We discuss some of the novel variations to the classic CRISPR/Cas9 system that have been tailored and applied previously to study several aspects of lncRNAs functionality. Finally, we share perspectives on the potential applications of various CRISPR systems, including RNA-targeting, in the direct editing and manipulation of lncRNAs.