Subjects -> ENGINEERING (Total: 2838 journals)
    - CHEMICAL ENGINEERING (247 journals)
    - CIVIL ENGINEERING (248 journals)
    - ELECTRICAL ENGINEERING (175 journals)
    - ENGINEERING (1443 journals)
    - ENGINEERING MECHANICS AND MATERIALS (451 journals)
    - HYDRAULIC ENGINEERING (62 journals)
    - INDUSTRIAL ENGINEERING (97 journals)
    - MECHANICAL ENGINEERING (115 journals)

ENGINEERING (1443 journals)            First | 1 2 3 4 5 6 7 8     

Showing 1201 - 1205 of 1205 Journals sorted alphabetically
Quality and Reliability Engineering International     Hybrid Journal   (Followers: 15)
Quality Engineering     Hybrid Journal   (Followers: 12)
Quantum Engineering     Hybrid Journal  
R&D Journal     Open Access   (Followers: 1)
Radiochimica Acta     Hybrid Journal   (Followers: 5)
Rare Metals     Hybrid Journal   (Followers: 3)
Reactive and Functional Polymers     Hybrid Journal   (Followers: 5)
Recent Patents on Engineering     Hybrid Journal   (Followers: 3)
Recent Patents on Nanotechnology     Hybrid Journal   (Followers: 2)
Recherche Transports Sécurité     Hybrid Journal   (Followers: 1)
Redes de Ingeniería     Open Access  
Regional Maritime University Journal     Full-text available via subscription   (Followers: 3)
Regular and Chaotic Dynamics     Hybrid Journal  
Rem : Revista Escola de Minas     Open Access  
Remote Sensing     Open Access   (Followers: 53)
Remote Sensing Letters     Hybrid Journal   (Followers: 46)
Requirements Engineering     Hybrid Journal   (Followers: 3)
Research Ideas and Outcomes     Open Access   (Followers: 1)
Research in Engineering Design     Hybrid Journal   (Followers: 10)
Research Journal of Nanoscience and Nanotechnology     Open Access   (Followers: 18)
Resonance     Hybrid Journal   (Followers: 29)
Respuestas     Open Access  
Results in Engineering     Open Access  
Review of Symbolic Logic     Full-text available via subscription   (Followers: 2)
Reviews in Advanced Sciences and Engineering     Partially Free   (Followers: 1)
Revista AIDIS de Ingeniería y Ciencias Ambientales. Investigación, desarrollo y práctica     Open Access  
Revista Brasileira de Engenharia Agrícola e Ambiental     Open Access   (Followers: 1)
Revista Brasileira de Inovação     Open Access  
Revista Campus     Open Access  
Revista Ciencia y Tecnología     Open Access  
Revista Ciencia y Tecnología     Open Access  
Revista Ciencia y Tecnología El Higo     Open Access   (Followers: 2)
Revista Científica de la UCSA     Open Access  
Revista Colombiana fe Technologias de Avanzada (RCTA)     Open Access   (Followers: 3)
Revista Cubana de Ingeniería     Open Access  
Revista de Ciências Exatas Aplicadas e Tecnológicas da Universidade de Passo Fundo : CIATEC-UPF     Open Access  
Revista de Ciências Exatas e Tecnologia     Open Access   (Followers: 1)
Revista de Ingeniería     Open Access  
Revista de Ingenieria Sismica     Open Access  
Revista de Investigación     Open Access  
Revista de Investigación, Desarrollo e Innovación     Open Access  
Revista de Investigaciones en Energía, Medio Ambiente y Tecnología     Open Access  
Revista de la Universidad del Zulia     Open Access  
Revista EIA     Open Access   (Followers: 1)
Revista Facultad de Ingeniería     Open Access   (Followers: 1)
Revista Facultad de Ingenieria - Universidad de Tarapaca     Open Access   (Followers: 1)
Revista Facultad de Ingeniería Universidad de Antioquia     Open Access   (Followers: 1)
Revista Fatec Zona Sul : REFAS     Open Access  
Revista Iberoamericana de Automática e Informática Industrial RIAI     Open Access  
Revista Informador Técnico     Open Access   (Followers: 1)
Revista Ingenieria de Construcción     Open Access   (Followers: 1)
Revista Interdisciplinar de Pesquisa em Engenharia     Open Access   (Followers: 1)
Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería     Open Access  
Revista Logos Ciencia & Tecnología     Open Access   (Followers: 1)
Revista Técnica de la Facultad de Ingeniería : Universidad del Zulia     Open Access   (Followers: 1)
Revista Tecnología en Marcha     Open Access  
Revista Tecnológica     Open Access   (Followers: 1)
Revista UIS Ingenierías     Open Access  
Revue de Métallurgie     Full-text available via subscription  
RUDN Journal of Engineering Researches     Open Access   (Followers: 1)
Russian Engineering Research     Hybrid Journal  
Russian Journal of Non-Ferrous Metals     Hybrid Journal   (Followers: 21)
Russian Microelectronics     Hybrid Journal   (Followers: 1)
Sadhana     Open Access   (Followers: 10)
Safety Science     Hybrid Journal   (Followers: 27)
Scholedge International Journal of Multidisciplinary & Allied Studies     Open Access   (Followers: 3)
Science & Technique     Open Access   (Followers: 1)
Science and Education : Scientific Publication of BMSTU     Open Access   (Followers: 1)
Science and Engineering Ethics     Hybrid Journal   (Followers: 9)
Science and Technology     Open Access   (Followers: 2)
Science and Technology Indonesia     Open Access   (Followers: 1)
Science China Technological Sciences     Hybrid Journal   (Followers: 1)
Science in Context     Hybrid Journal   (Followers: 3)
Science Journal of Volgograd State University. Technology and innovations     Open Access  
Science Progress     Full-text available via subscription   (Followers: 4)
Sciences & Technologie B : Sciences de l'ingénieur     Open Access  
Scientia cum Industria     Open Access  
Scientific Drilling     Open Access  
Scientific Journal of Control Engineering     Open Access   (Followers: 3)
Scientific Journal of Mehmet Akif Ersoy University     Open Access  
Scientific Journal of Pure and Applied Sciences     Open Access   (Followers: 1)
SCITECH Nepal     Open Access  
Sealing Technology     Full-text available via subscription   (Followers: 1)
Securitas Vialis     Hybrid Journal  
Security and Communication Networks     Hybrid Journal   (Followers: 2)
Selcuk University Journal of Engineering, Science and Technology     Open Access   (Followers: 2)
Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Journal of     Hybrid Journal   (Followers: 57)
Semiconductors     Hybrid Journal   (Followers: 2)
Semiconductors and Semimetals     Full-text available via subscription   (Followers: 1)
Sensing and Imaging : An International Journal     Hybrid Journal   (Followers: 2)
Sensor Letters     Full-text available via subscription   (Followers: 2)
Sensors     Open Access   (Followers: 23)
Separation and Purification Technology     Hybrid Journal   (Followers: 15)
Shock and Vibration     Hybrid Journal   (Followers: 26)
SIAM Journal on Applied Dynamical Systems     Hybrid Journal   (Followers: 2)
SIAM Journal on Mathematical Analysis     Hybrid Journal   (Followers: 4)
SIAM Journal on Matrix Analysis and Applications     Hybrid Journal   (Followers: 3)
SIAM Journal on Numerical Analysis     Hybrid Journal   (Followers: 7)
SIAM Journal on Optimization     Hybrid Journal   (Followers: 11)
SIAM Review     Hybrid Journal   (Followers: 7)
SILICON     Hybrid Journal  
SINERGI     Open Access  
Sistemas & Telemática     Open Access   (Followers: 2)
Sleep and Biological Rhythms     Hybrid Journal   (Followers: 9)
Small     Hybrid Journal   (Followers: 16)
Smart Grid     Open Access   (Followers: 1)
SN Applied Sciences     Hybrid Journal   (Followers: 1)
Sociología y Tecnociencia     Open Access  
Soft Computing     Hybrid Journal   (Followers: 9)
Soil Dynamics and Earthquake Engineering     Hybrid Journal   (Followers: 15)
Solar RRL     Hybrid Journal  
Soldagem & Inspeção     Open Access  
SourceOCDE Developpement urbain, rural et regional     Full-text available via subscription   (Followers: 1)
SourceOCDE Energie     Full-text available via subscription  
SourceOECD Energy     Full-text available via subscription  
SourceOECD Science and Technology Statistics - SourceOCDE Base de donnees des sciences et de la technologie     Full-text available via subscription  
SourceOECD Transport     Full-text available via subscription   (Followers: 2)
SourceOECD Urban, Rural and Regional Development     Full-text available via subscription  
South African Computer Journal     Full-text available via subscription  
South African Journal of Agricultural Extension     Open Access   (Followers: 4)
South African Journal of Science     Open Access   (Followers: 4)
Sports Engineering     Hybrid Journal   (Followers: 2)
Stahlbau     Hybrid Journal   (Followers: 2)
Steel in Translation     Hybrid Journal   (Followers: 1)
Steel Research International     Hybrid Journal   (Followers: 24)
Stochastic Analysis and Applications     Hybrid Journal   (Followers: 2)
Stochastic Processes and their Applications     Hybrid Journal   (Followers: 5)
Stochastics and Dynamics     Hybrid Journal  
Strain     Hybrid Journal   (Followers: 2)
Strategic Planning for Energy and the Environment     Hybrid Journal   (Followers: 4)
Studies in Engineering and Technology     Open Access  
Studies in Interface Science     Full-text available via subscription  
Studies in Logic and Practical Reasoning     Full-text available via subscription  
Studies in Surface Science and Catalysis     Full-text available via subscription   (Followers: 1)
Sud-Sciences et Technologies     Open Access   (Followers: 1)
Superconductor Science and Technology     Hybrid Journal   (Followers: 3)
Surface Engineering     Hybrid Journal   (Followers: 1)
Surface Review and Letters     Hybrid Journal   (Followers: 1)
Surface Science Reports     Full-text available via subscription   (Followers: 20)
Surfaces and Interfaces     Hybrid Journal  
Survey Review     Hybrid Journal   (Followers: 6)
Surveying and Land Information Science     Full-text available via subscription   (Followers: 1)
Surveys in Operations Research and Management Science     Hybrid Journal   (Followers: 3)
Sustainability Science     Open Access   (Followers: 9)
Sustainability Science and Engineering     Full-text available via subscription   (Followers: 3)
Sustainable Management of Sediment Resources     Full-text available via subscription  
Swiss Journal of Geosciences     Hybrid Journal   (Followers: 1)
Symmetry     Open Access   (Followers: 1)
Synthesis Lectures on Algorithms and Software in Engineering     Full-text available via subscription   (Followers: 3)
Synthesis Lectures on Antennas     Full-text available via subscription   (Followers: 6)
Synthesis Lectures on Biomedical Engineering     Full-text available via subscription  
Synthesis Lectures on Computational Electromagnetics     Full-text available via subscription   (Followers: 4)
Synthesis Lectures on Energy and the Environment: Technology, Science, and Society     Full-text available via subscription   (Followers: 1)
Synthesis Lectures on Engineering     Full-text available via subscription  
Synthesis Lectures on Global Engineering     Full-text available via subscription  
Synthesis Lectures on Professionalism and Career Advancement for Scientists and Engineers     Full-text available via subscription   (Followers: 2)
Synthetic Metals     Hybrid Journal   (Followers: 4)
Systems Engineering     Hybrid Journal   (Followers: 7)
Systems Engineering - Theory & Practice     Full-text available via subscription  
Systems Engineering Procedia     Open Access  
Systems Research Forum     Hybrid Journal   (Followers: 1)
Systems Science & Control Engineering     Open Access   (Followers: 8)
Tableros     Open Access   (Followers: 2)
Tapuya : Latin American Science, Technology and Society     Open Access   (Followers: 1)
Technical Tips Online     Full-text available via subscription   (Followers: 1)
Technological Engineering     Open Access   (Followers: 1)
Technologies     Open Access   (Followers: 2)
TECHNOLOGY     Hybrid Journal   (Followers: 1)
Technology and Economics of Smart Grids and Sustainable Energy     Hybrid Journal  
Technology and Innovation     Full-text available via subscription   (Followers: 4)
Technology in Society     Hybrid Journal   (Followers: 7)
Technometrics     Full-text available via subscription   (Followers: 9)
Tecnología y Ciencia     Open Access  
Tecnología y Sociedad     Open Access   (Followers: 1)
Tecnologia, Ciencia, Educacion     Open Access   (Followers: 1)
TecnoLógicas     Open Access  
Tecnura     Open Access   (Followers: 1)
Tekhné     Open Access   (Followers: 1)
Tekniikan Waiheita     Open Access  
Teknologi dan Kejuruan : Jurnal Teknologi, Kejuruan, dan Pengajarannya     Open Access  
Telecommunications Policy     Hybrid Journal   (Followers: 10)
Textile Science and Technology     Full-text available via subscription   (Followers: 4)
Thalassas : An International Journal of Marine Sciences     Hybrid Journal  
The Engineer     Partially Free  
The Journal of Supercomputing     Hybrid Journal   (Followers: 1)
The Scientific World Journal     Open Access  
Theoretical and Computational Fluid Dynamics     Hybrid Journal   (Followers: 17)
Theoretical Issues in Ergonomics Science     Hybrid Journal   (Followers: 7)
Thermal Engineering     Full-text available via subscription   (Followers: 10)
Tikrit Journal of Engineering Science     Open Access  
tm - Technisches Messen     Hybrid Journal   (Followers: 2)
Topics in Catalysis     Hybrid Journal   (Followers: 1)
Traffic Injury Prevention     Hybrid Journal   (Followers: 74)
Transactions of the Indian National Academy of Engineering     Hybrid Journal   (Followers: 2)
Transactions of the VŠB – Technical University of Ostrava, Safety Engineering Series     Open Access   (Followers: 1)
Transactions of Tianjin University     Full-text available via subscription  
Transport and Aerospace Engineering     Open Access   (Followers: 13)
Transport and Telecommunication     Open Access   (Followers: 4)
Transport World Africa     Full-text available via subscription   (Followers: 2)
Transportation Research Record : Journal of the Transportation Research Board     Full-text available via subscription   (Followers: 32)

  First | 1 2 3 4 5 6 7 8     

Similar Journals
Journal Cover
Science and Technology Indonesia
Number of Followers: 1  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2580-4405 - ISSN (Online) 2580-4391
Published by Sriwijaya University Homepage  [4 journals]
  • The Property of Continuity And Positively Definite Characteristic Function
           of Compound Poisson Distribution As The Sum of Geometric Distribution

    • Authors: Sherli Yurinanda, Ferra Yanuar, Dodi Devianto
      Pages: 53 - 58
      Abstract: The compound Poisson distribution as the sum of independent and identically random variables from geometric distribution is characterized by using characteristic function. The characteristic function of this compound distribution is obtained by Laplace-Stieltjes transform. It is provided a characterization of this compound distribution employing the properties of characteristic function as continuous and positively definite function.
      PubDate: 2018-04-16
      DOI: 10.26554/sti.2018.3.2.53-58
      Issue No: Vol. 3, No. 2 (2018)
       
  • Non-Destructive Measurement of Green Bitter Gourd Quality Component Using
           Near Infrared Spectroscopy (NIRS)

    • Authors: Kusumiyati Kusumiyati, Wawan Sutari, Jajang Sauman Hamdani, Syariful Mubarok, Rika Bhernike Sitepu, Ade Risti Oktavia
      Pages: 59 - 65
      Abstract: The quality component measurement of horticultural products becomes more important to achieve better quality products also to obtain uniform product. Recently, measurement by non-destructive methods turns out to be more needed, because consumers become more selective and demand producers to develop a quick, effective and accurate quality assessment system. Near Infrared Spectroscopy (NIRS) can measure plant contents quickly, relatively economical in a bigger scale, and importantly non-destructive. The measurement of quality components of green bitter gourd, such as firmness, water content, total soluble solid, and color, are important but have not been widely conducted. This research was conducted from June to August 2013 at Post Harvest Laboratory, Faculty of Agriculture, Padjadjaran University, Sumedang, Indonesia with PLS regression modeling method. The results show R-value and standard error of 0.91 and 0.47 for water content, 0.93 and 1.03 for firmness, and 0.95 and 0.49 for a* value of fruit color.
      PubDate: 2018-04-16
      DOI: 10.26554/sti.2018.3.2.59-65
      Issue No: Vol. 3, No. 2 (2018)
       
  • Morphological Diversity of Rattan on The Three Conservation Areas In South
           Sumatera

    • Authors: Baitika Baitika, Zulkifli Dahlan, Indra Yustian
      Pages: 66 - 72
      Abstract: Research on the diversity of rattan morphology has been conducted in three forest conservation areas in South Sumatra i.e. Bentayan Wildlife Reserve, Bukit Cogong and Gunung Raya Wildlife Reserve. This study aims to analyze the diversity of rattan morphology in three protected areas in South Sumatra. This research uses purposive sampling method by exploring the forest area. The results showed that in the Bentayan Wildlife Reserve area were found 3 species of 3 genera while in Bukit Cogong Protected Forest were found 9 species of 3 genera and in the Bentayan Wildlife Reserve area were found 5 species of 3 genera. The morphology of rattans species in the three regions have different shapes and colors of thorns on the stem, the top and the bottom surfaces of the leaves, the climbing organ and the growth nature. The same rattan species were being found in the same of two or three locations, having morphological differences in diameter and length of the stem.
      PubDate: 2018-04-16
      DOI: 10.26554/sti.2018.3.2.66-72
      Issue No: Vol. 3, No. 2 (2018)
       
  • Comparison Analysis of CBR Value Enhancement of Soil Type in Swamp Area by
           Addition of Fly Ash

    • Authors: Indrayani Indrayani, Andi Herius, Arfan Hasan, Ahmad Mirza
      Pages: 73 - 76
      Abstract: Roads was built on swamp areas should be consider the condition of the base soil, since the characteristics of the soil in swamp areas have always inundated and have a low soil carrying capacity (Subagyo, 2006).  One of effort that could be done to improve the existing soil condition was used fly ash as a material for soil stabilization (Indera et al, 2016; Mina et al, 2016). This study was conducted to analyze the enhancement of CBR value on various soil types in swamp area by the addition of fly ash. Testing on the values of index properties, compaction, and CBR values was done in laboratory base on ASTM and AASHTO standars.  The test results show that the type of soil at the location of the sampling is silty or clay gravel and sand, clay soil, and silty soil.  The reduction of optimum water content  after the addition of fly ash is the highest decrease of  20.92%. While the highest increase of dry content weight after the addition of fly ash was 0.904 gr / cm3. An enhancement in the value of CBR by the addition of 20% fly ash in the study area, however the increase magnitude depends on the existing soil types, ie 7.99% in the silty or clay gravel and sand, 6 - 8% in the clay soil and 0,22 - 5% on silty soil. This indicates that the addition of fly ash was the optimum used on the type of clay soil.
      PubDate: 2018-04-16
      DOI: 10.26554/sti.2018.3.2.73-76
      Issue No: Vol. 3, No. 2 (2018)
       
  • Development of Audit Energy Application for Residential Sector

    • Authors: Rihartanto Rihartanto, Wawan Kustiawan, Lambang Subagiyo
      Pages: 77 - 80
      Abstract: The residential sector is the biggest electric energy user in Indonesia. In this sector, there is a potential electricity saving of up to 30%. This savings can be obtained by implementing energy conservation. Energy use intensity (EUI) is a measure in assessing the efficiency of a building. From the EUI value can then be determined the efficiency criteria of a residential building, is it very efficient, efficient, moderately efficient or wasteful. An energy audit application was developed to facilitate in assessing the efficiency of a residential building in consuming electricity. The efficiency assessment in the model building shows that there is a significant electricity saving after the conservation efforts conducted, even though the model building is included efficient in the use of electrical energy.
      PubDate: 2018-04-16
      DOI: 10.26554/sti.2018.3.2.77-80
      Issue No: Vol. 3, No. 2 (2018)
       
  • Analysis of Vegetation in Green Open Space of Gasing Industrial Area

    • Authors: Siti Indah Oktaviani, Laila Hanum, Zaidan P Negara
      Pages: 81 - 88
      Abstract: The study aims to determine the diversity of vegetation in the Green Open Space of the Gasing Industrial Area. The study was conducted from April to July 2017. The method of analysis used quadratic method with 2 plots at different location with three repetitions, quantitative data analysis was done on density value, dominance, frequency, important value and diversity index of each plant species. The results showed that vegetation consists of 16 tribes and 19 species, dominated by Pteridophyta and Spermatophyta. Value of vegetation diversity (2,24) and uniformity value 0,30. The higher number of the species, the higher diversity index of the species. Such characteristics are caused by environmental influences such as organic matter content and low pH and factors derived from human intervention. Keywords: Vegetation, Diversity, industrial area
      PubDate: 2018-04-16
      DOI: 10.26554/sti.2018.3.2.81-88
      Issue No: Vol. 3, No. 2 (2018)
       
  • Correlation Among Education, Knowledge, And Economics Of Mother Toward
           Antipyretic Drug Usage For Toddler In Kangkung Village OKUT Sumsel 2017

    • Authors: Rennie Puspa Novita, Atika Akbari, Nikita Surya Dharma, Endang Putria Sukma
      Pages: 89 - 93
      Abstract: Fever is a symptom mostly happen with all diseases which condition shows elevated body temperature above normal (38°C) that are common among toddler. Handling fever using antipyretics should be considered related to the rationale of its use. Rationality aspect which include indication accuracy, precision of medicine, patient accuracy, dosage accuracy and precision of administration, and as well as alert to side effects. Handling fever in toddlers is very dependent on the role of parents especially mother. Different maternal education, knowledge, and economics will result in the rationale of the use of different antipyretic drugs. This study aimed to investigate whether there is relation among education, knowledge, and economics of mother toward antipyretic drug usage for toddler in Kangkung Village OKUT SUMSEL 2017 by using cross sectional design. The sample was collected using simple random sampling to get 47 samples which fulfilled the inclusion criteria. The data were collected by interview based on questionnaire and analyzed by Chi-Square test using SPSS® version 23.0. The data presented descriptively showed most of the respondents were highly educated (66%), high knowledge (61.7%), and low economic level (93.6%) and the rational use of antipyretic for toddler were 100% for appropriate drug indication, precision of medicine, patient appropriateness, and alert for side effects, as well as 31.9% dosage precision and mode of administration. The result of Chi-Square test showed that the p value for education level (p >0.05) and economic level (p >0.05) had no significant correlation, meanwhile the knowledge level (p <0.05) showed significant different to the rational use of antipyretic for toddler. It can be concluded that the knowledge toward of mother affect the rational use of antipyretic for toddler in Kangkung village OKUT regency SUMSEL 2017.
      PubDate: 2018-04-16
      DOI: 10.26554/sti.2018.3.2.89-93
      Issue No: Vol. 3, No. 2 (2018)
       
  • Factors of Medicinal Plants Users as Alternative Medicinal in Indonesia

    • Authors: Yunita Theresiana, Kamaluddin Kamaluddin, Sriati Sriati, Lili Erina
      Pages: 94 - 99
      Abstract: Traditional medicines are the cultural heritance of Indonesian nation that should be preserved and developed in order to support the society’s health development and to improve the society’s economy. This research was aimed to figure out the society’s behaviors in using traditional medicines and the dominant factors that influence them in using traditional medicines. This research is a non-experimental research, with analytical survey method and cross-sectional approach. Fifty percent of the existing districts (16 districts) were selected randomly to serve as the sample. The districts selected included the districts of Muara Kuang, Tj. Raja, Lubuk Keliat, Payaraman, Indralaya, Pemulutan, Pemulutan Selatan and Rantau Panjang, totaling eight. The number of villages selected was 66. From these villages, the research sample was selected using stratified random sampling technique, and a sample of 400 people was obtained. The analysis was conducted in a bivariate manner with chi square test. The results showed that the respondents were motivated to use traditional medicines through (a) predisposing factors perceived sickness; (b) enabling factors, including economic level, location of domicile, type of complaints, insurance and distance to health facilities; and (c) reinforcing factors, including family support and traditional medicine promotion. Serving as the predicting factors in the traditional medicine use were the variables perceived sickness, type of complaint, distance to health facilities and traditional medicine promotion, with the variables occupation, insurance, education, family support, domicile and income serving as the confounding variables.
      PubDate: 2018-04-16
      DOI: 10.26554/sti.2018.3.2.94-99
      Issue No: Vol. 3, No. 2 (2018)
       
  • Study of the Effect of Proximate, Ultimate, and Calorific Value Analysis
           on Methane Gas Emission (CH4) on Combustion of Coal for Sustainable
           Environment

    • Authors: Reni Arisanti, Maulana Yusuf, M. Faizal
      Pages: 100 - 106
      Abstract: Coal is a hydrocarbon fuel consisting of a mixture of substances containing carbon, hydrogen, oxygen, and containing less sulfur and nitrogen. Utilization of coal as fuel, especially in large scale causes methane gas emissions that can increase the impact of global warming, causing a decrease in environmental quality. Methane gas emissions in coal combustion are influenced by coal proximate and ultimate analysis. Proximate analysis includes moisture content, volatile matter, and fixed carbon, while ultimate analysis is carbon, hydrogen and oxygen. This study aims to determine the analysis of the effect of proximate, ultimate, and caloric value of methane emissions in coal combustion. This research is experimental, using quantitative method with descriptive and associative approach. The effect of proximate analysis, the lower the calorific value, the higher content moisture, the time and duration of coal combustion will be longer. Coal 5674 cal / gr, burning time 65 minutes, combustion length 39 minutes, moisture content 14.85%, coal 5747 cal / gr, burning time 60 minutes, duration of burning 31 minutes, moisture content 14.71%, coal 5617 cal / gr, burning time 49 minutes, combustion length 28 minutes, moisture content 12.17%, while coal 6992 cal / gr combustion time 38 minutes, combustion time only 4 minutes, and mosisture content 3.53%. Volatile matter in coal will affect the incubation period, the higher the volatile matter of the incubation period the faster. Coal 5617 cal / g incubation period 21 minutes, volatile matter 39.20%, coal 5674 cal / gr incubation period 26 minutes, volatile matter 38.39%, coal 5747 cal / gr, incubation period 29 minutes, volatile matter 39,30 %. For coal 6992 cal / gr incubation period 34 minutes, volatile matter 18.13%. The effect of ultimate analysis, the higher the carbon content, the higher the fixed carbon content, and the lower the hydrogen, the higher the calorific value of the coal and the less methane gas emissions. While the higher the oxygen content, the more burned the coal will be, the faster the incubation time and the longer burning time, so that the emissions of methane gas out into the atmosphere will be more and more.
      PubDate: 2018-04-16
      DOI: 10.26554/sti.2018.3.2.100-106
      Issue No: Vol. 3, No. 2 (2018)
       
  • Analysis of Potential Landslides Using Geographic Information System (GIS)
           on Rail Tunnel in Gunung Gajah Village, Lahat Regency of South Sumatra

    • Authors: Mirza Adi Warman, Muhammad Taufik Toha, Endang Wiwik Dyah Hastuti
      Pages: 107 - 113
      Abstract: Lahat Regency is one of the cities which is prone to geological disasters such as landslides. The landslide is caused by a varied topography such as flat, hilly or mountainous. On January, 23rd 2016, the landslide occurred on the mouth of a railway tunnel in Gunung Gajah Village, Lahat Regency.  The purpose of this study is to determine the influence of geological factor on the slope stability. The method of research is a survey method based on geographic information systems in the form of interpretation and analysis of the causes and triggers of landslides with a direct approach in the field by doing scoring an overlay technique. The analysis obtained the parameters of landslides such as: slope, lithology/physical properties of rocks, geological structure and land use. The results and conclusions of this research are the landslide potential distribution map in Gunung Gajah Village, Lahat Regency consisting of three classes of landslide vulnerability: low, medium and high and in the focus areas of research entering the high level of vulnerability.
      PubDate: 2018-04-27
      DOI: 10.26554/sti.2018.3.2.107-113
      Issue No: Vol. 3, No. 2 (2018)
       
 
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