Journal of Green Science and Technology最新文献

{"title":"DETERMINATION OF RESERVOIR CHARACTERISTIC BASED ON THE WELL COMPLETION TEST IN THE RL WELL","authors":"R. Martasari, Fama Agri Lactuca","doi":"10.33603/jgst.v4i3.4033","DOIUrl":"https://doi.org/10.33603/jgst.v4i3.4033","url":null,"abstract":"Well Completion Test is a testing activity undertaken to determine the depth of production zone and feed center depth as well as to calculate the estimated production capacity of a well. Well completion tests are performed on wells that have just been drilled by exploring the depth of the well, measuring pressure and temperature, water loss test and gross permeability test. As a result of exploring the RL well, the tool was placed at a depth of 2000 meters. Injectivity is done at different pump rates, pressure and liquid faces. The gross permeability test results obtained an injection of 202.22 lpm/ksc, an average specific capacity of 5.028 lpm/meter, transmissivity of 0.1208955 darcymeter and skin factor 3.33381. Next calculate the production estimation using the injection that has been converted and plot to the graph then obtained the result of the estimated potential production of a well that is 6,3 MW. After a well has completed a well completion test, the next step is to test the production for more accurate results, because of the well completion test itself the accuracy is only about 50% only, therefore the production test needs to be done for the results which in getting more accurate.","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"151 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122038967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"WATER LEAKED ANALYSIS IN THE GAS AIR HEATER IN PT CIREBON POWER SERVICE","authors":"E. Prastyo, Syamsul Ma'arif","doi":"10.33603/jgst.v4i3.3997","DOIUrl":"https://doi.org/10.33603/jgst.v4i3.3997","url":null,"abstract":"PT. Cirebon Power Services is the first steam power plant (PLTU) in Indonesia that uses Supercritical Boiler technology. Combustion in a boiler using coal fuel produces hot gas which must be disposed of by utilizing a vacuum from the ID Fan and releasing it into the atmosphere. Gas Air Heater is a device that utilizes convection heat transfer from boiler exhaust heat to heat Primary Air and Secondary Air. The analysis was carried out by comparing the Gas Air Heater A and B through three parameters namely Air Leakage, X Ratio, and Efficiency. Data was collected from 31 December 2019 to 30 January 2020. The efficiency value of Gas Air Heater A was obtained 66% - 68% and Gas Air Heater B was 62% - 64%. The value of Air Leakage Gas Air Heater A is obtained 6% - 9% and Gas Air Heater B 10% - 12%. The value of X Ratio of Gas Air Heater A is 0.74 to 0.77, greater than Gas Air Heater B 0.68% to 0.71%.","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127302195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ANALYSIS OF INFILTRATION RELATIONS WITH LAND PHYSICAL PROPERTIES","authors":"Awliya Tribhuwana, A. Prasetyo","doi":"10.33603/jgst.v4i3.3996","DOIUrl":"https://doi.org/10.33603/jgst.v4i3.3996","url":null,"abstract":"ABSTRACTSoil types have different infiltration rates and vary depending on the characteristics of the soil, how the infiltration relationship occurs with dry water content and saturated water content, infiltration relationship with the soil after being compacted and before compacted and how the infiltration rate of the two types of relationship and how infiltration water that happened. Soil tests are carried out in the laboratory, soil water content before and after the soil has been solidified, changes in the time of infiltration capacity with the Horton equation, rain hydrograph for overall infiltration analysis, including cumulative infiltration and runoff rates.Soils experience porosity filling not as great as in normal soil conditions, normal soil conditions changes in water content reaches 5.22 mm/hour while in soil conditions that experience changes in water content compaction at 30 minutes by 0.14 mm/hour and experiences a constant rate in the 40th minute at a rate of 0.20 mm/hour, so there is a difference in water content of 5.08 mm/hour between normal soil and soil after solidification, due to compacting it causes runoff of 8.92 mm/hour, normal soil with runoff of 3.78 mm/hour.Keyword :  Infiltration, soil physical properties, runoff.","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123753807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PERFORMANCE ANALYSIS OF IRRIGATION AREA IN PEMALI BREBES","authors":"Muhamad Salman Salahuddin, Saihul Anwar, Heri Mulyono","doi":"10.33603/JGST.V4I3.4940","DOIUrl":"https://doi.org/10.33603/JGST.V4I3.4940","url":null,"abstract":"Irrigation Area Pemali comprised in the district of Banjarharjo Brebes Center Java, the located Approximately less than 50 km from Cirebon and 40 km from Bradford Center Java, and exist some villages such as, Cikakak, Coral Maja, Tiwulandu Village in East and Tonjong, shovel , Gandol in West. Irrigation Area Pemali duct have the name is the Regional Master Irrigation Pemali or named DI Jangkelok Hilir. At first, the water Able to dilute more less 6677ha but in this time only more less 6349ha, the trouble is the diversion of the use of land. This Pemali irrigation area was built in the years 1901 - 1904. The irrigation areas of irrigation area Pemali supply six kemantren such as Kemantren Cibendung, Kemantren Bantarsari, Kemantren Losari Upstream, Downstream Losari Kemantren, Kemantren Kubangjero, and Kemantren Rungkang. The purpose of this research is Become a reference from evaluation of performance of the irrigation area in irrigation area Pemali by analyzing the physical condition of building Although duct in the irrigation area of the Regional Irrigation Pemali, analyzing of human resource in the irrigation area of the Regional Irrigation Pemali, analyzing of rain Hydrology in the irrigation area of the Regional Irrigation Pemali, analyzing of income from weir Cibendong, analyzing of the patterns plants in the irrigation area of the Regional Irrigation Pemali, and analyzing planning plant and the realization of planting in the irrigation area of the Regional Irrigation Pemali. The method of this research is qualitative method, in the which the fission of the problem is explained that the subject or the object of research based on the facts roomates used during doing the research in the performance of irrigation system and try to make a good relation in deep from the aspects particularly subject. Based on the build irrigation condition in this area is classified as satisfactory with percentage of damage Reached 11.30%. Meanwhile, the duct condition in this irrigation area irrigation area is good Pemali classified with percentage of damage Reached 8.21%. The condition of the organizer in DI Jangkelok available irrigation area Pemali only 51 people, while in needed is 67 people with less percentage Reached 17.94% so that service toward the duct condition is less completed and have the impact to net condition wake or less roomates always damaged, this situation should be increased.From the results of the analysis of the ratio of demand with available discharge effective discharge rainfall added Irrigation Area in Jengkelok, Cibendung Weir fulfilled, but many unused discharge it is Necessary to modify the cropping pattern in order to maximize the potential of available discharge. The planting realization in 7 years ago in the irrigation area Irrigation Area Jangkelok Pemali it is less from the planning plant, but in the period of 2011/2012 Occurs Increased 7.34% and the realization of planting intensity is average 243.77% while the average of plan","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130517505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ANALYSIS OF CONSTRUCTION MANAGEMENT OF KINDERFIELD SCHOOL CIREBON DEVELOPMENT PROJECT","authors":"Dea Devira Hidayati, Saihul Anwar","doi":"10.33603/JGST.V4I3.4939","DOIUrl":"https://doi.org/10.33603/JGST.V4I3.4939","url":null,"abstract":"Management of construction projects is becoming increasingly complex due to the many parties that interact in it and the increasingly high demands for quality of functions, comfort, security, aesthetics and sustainability. Therefore construction management is needed to ensure the efficiency and productivity of a construction project in meeting various expectations and requirements.  Contruction management analysis on this building project of Kinderfield School include volume measurment, RAB, cost recapitulation and working/occupation unit cost analysis, with use CPM method (Critical Path Method) is a method in identificating a stripe or working item critically. CPM method solves the problem with retreat and forward measurement.  From the weight measurment occupation based on Barchart analysis, Curva S and building PDM scedhule of Kinderfield School needs the times as long as 42 weeks with cost estimation Rp. 9,439,526,000,00.. Keyword: Barchart, Construction Management, CPM (Critical Path Method) , S-Curve .","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132190734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MANAGEMENT OF PUBLIC TRANSPORTATION PERFORMANCE MODEL BASED ON SAFETY TRANSPORTATION, PERIODIC TRANSPORTATION TEST, BEHAVIOR, AND SATISFACTION IN CIREBON CITY.","authors":"H. Hermawan","doi":"10.33603/jgst.v4i2.3446","DOIUrl":"https://doi.org/10.33603/jgst.v4i2.3446","url":null,"abstract":"The development of cities in Indonesia is marked by the high number of commuters (commuters) who travel between the main city and the surrounding city or district (hinterland) or between regions within a city due to an increase in population, population activities, types of services, and the relative functioning of the economy national and regional level of a country..        Transportation problems and challenges are multi-dimensional between transportation systems and urban systems, both operational, management and policy aspects. Urban transport policies that care about sustainable development in developing countries are very complex, but can be studied especially in the public transportation system because it is more possible when compared to private transport at this time.        In Indonesia, the number of motorized vehicles is increasing every year. The addition of that number in 2012 reached 10,036 million units, resulting in the population recorded in the Indonesian National Police increased 12% to 94.292 million units compared to only 84.19 million in 2011 (Kurniawan, 2013). Based on data from the National Police also stated that in 2012 there were 109,038 accident cases with 27,441 people died. Different data from the Coordinating Ministry for Economic Affairs and People's Welfare of the Republic of Indonesia states that motorcycle rider accidents have reached 120,226 times or 72% of all traffic accidents in a year. Most accident cases occur in people with lower middle economic level as motorcycle and public transportation users (State Intelligence Agency, 2013).        As released by WHO (World Health Organization), of all accidents that occur on the highway, the human error factor (human error) has the highest contribution, reaching between 80-90 percent compared to the factor of vehicle vehicle improperities ranging from 5-10 percent, as well as due to damage to road infrastructure by 10-20 percent (DG Hubdat, 2010). Vehicle facilities that often occur are less than 1 millimeter of tire grooves resulting in vehicle skid or tire breaks, brakes failing, metal fatigue resulting in broken vehicle parts, worn equipment not replaced, and various other causes. This is very much related to the technology used and the care done to the vehicle. One of the government's efforts to improve road safety is through safety vehicle action programs such as compliance with vehicle operations, organizing periodic and type test repair procedures, handling overloading, vehicle scrapping, and developing motor vehicle design that aims to improve vehicle safety technology (DG Hubdat, 2013). Keywords :Transportation Performance, User Satisfaction.","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114806584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ANALYSIS OF WATER SALINITY LEVEL OF FREQUENCY MOLTING IN VANNAMEI SHRIMP (LITOPENAEUS VANNAMEI) ABLATED","authors":"Mutiara Salsabiela","doi":"10.33603/jgst.v4i2.3436","DOIUrl":"https://doi.org/10.33603/jgst.v4i2.3436","url":null,"abstract":"ABSTARCT Media salinity is a masking factor that plays an important role in controlling the process of shrimp molting and osmoregulation. Both of them are ecophysiological factors for shrimp life, so it is necessary to know the optimum level or range of media salinity for each phase of the molting phase changes in the stage and osmoregulation phase. This study was conducted to examine the molting frequency of adult L. vannamei which was ablated and cultivated at various levels of salinity. This research was carried out for 60 days. This study uses experimental laboratory methods with a systematic randomized design (RAS) with 4 treatments and 3 replications in each treatment. The treatments tested were salinity with S1 treatments (10 ppt, 289.20 mOsm / l postmolt H2O isosmotic), S2 (15 ppt, 432.80 mOsm / l H2O initial intermolt isosmotic), S3 (25 ± 1 ppt, 725, 15 mOsm / l H2O isosmotic final intermolt) and S4 (29 ± 1 ppt, 820.10 mOsm / l H2O isosmotic molt). Data were analyzed with ANOVA. Meanwhile, the difference in effect between treatments was obtained through Duncan's multiple area test. ANOVA results showed that various levels of isoosmotic media salinity at various molting phases had an influence (p <0.05) on molting frequency. The best value of molting frequency was in the S4 treatment (29 ± 1 ppt) (close to isoosmotic molt) 10 times. In the maintenance of L. vannamei which is affixed, it should pay attention to the needs of isoosmotic media, namely media with a salinity of 25 ± 1-29 ± 1 ppt (final intermolt isoosmotic range / premolt to molt). the difference in effect between treatments was obtained through Duncan's multiple region test. ANOVA results showed that various levels of isoosmotic media salinity at various molting phases had an influence (p <0.05) on molting frequency. The best value of molting frequency is in the treatment of S4 (29 ± 1 ppt) (close to isoosmotic molt) 10 times. In the maintenance of L. vannamei which is affixed, it is better to pay attention to the needs of isoosmotic media, ie media with a salinity of 25 ± 1-29 ± 1 ppt (final intermolt isoosmotic range / premolt to molt). the difference in effect between treatments was obtained through Duncan's multiple region test. ANOVA results showed that various levels of isoosmotic media salinity at various molting phases had an influence (p <0.05) on molting frequency. The best value of molting frequency is in the treatment of S4 (29 ± 1 ppt) (close to isoosmotic molt) 10 times. In the maintenance of L. vannamei which is affixed, it is better to pay attention to the needs of isoosmotic media, ie media with a salinity of 25 ± 1-29 ± 1 ppt (final intermolt isoosmotic range / premolt to molt). The best value of molting frequency was in the S4 treatment (29 ± 1 ppt) (close to isoosmotic molt) 10 times. In the maintenance of L. vannamei which is affixed, it is better to pay attention to the needs of isoosmotic media, ie media with a salinity of 25 ± 1-29 ± 1 ppt (final interm","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124339883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THE EFFICIENCY OF CRUDE CORROSION INHIBITOR AND GAS CORROSION INHIBITOR BY USING CARBON STEEL 1018 WITH POLARIZATION METHOD","authors":"P. A. Ibrahim","doi":"10.33603/jgst.v4i2.3467","DOIUrl":"https://doi.org/10.33603/jgst.v4i2.3467","url":null,"abstract":"Carbon Steel 1018 is a low carbon steel having a carbon content (C) of 0.14-0.20% (<0.30% C). Low carbon steel is commercially known as mild steel. Corrosion is one way to prevent corrosion caused by the environment. Corrosion inhibitor are taken between the Crude Corrosion Inhibitor and Gas Corrosion inhibitor on Carbon Steel 1018 using the polarization method. Corrosion inhibitors work by making passive layers in the form of thin films or films on the surface of the material used as a barrier between metals and corrosive media. The analysis method used is polarization. Inhibition Efficiency Results obtained for Gas Corrosion Inhibitors (1A) at 10 ppm 96.86%, 20 ppm 59.74%, 30 ppm 74.48%. The Crude Corrosion Inhibitor (2A) results obtained inhibition efficiency for 10 ppm 99.57%, 20 ppm 77.69%, and 30 ppm 12.63%. The optimum value for the Gas Corrosion Inhibitor and Crude Corrosion Inhibitor is at 10 ppm at 96.86% and 99.57%.","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114883120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ANALYSIS QUALITATIVE ADDITION OF ADDITIVE SUBSTANCE TO PAPER MAKING PROCESS IN PAPER MACHINE 12 PT. X - KARAWANG ON PRODUCT QUALITY","authors":"Dian Farkhatus Solikha","doi":"10.33603/jgst.v4i2.3460","DOIUrl":"https://doi.org/10.33603/jgst.v4i2.3460","url":null,"abstract":"Paper is a tangible item of thin sheets which can be torn, rolled, folded, glued and crossed out. Paper is made to meet the needs of a very diverse life. The paper industry is one of the forest products industries which has a very important role in human life. There is almost no human activity that does not utilize this industrial commodity. In the process of making paper, in addition to the availability of Raw Materials there is also the use of additives. Additives are ingredients that are added to obtain certain desired characteristics of paper products. Some factors that influence the process of making paper are raw material, machine cleanliness, machine performance, human factors and additives. Additives are the main factors that influence the success of the papermaking process. There are two types of additives used in Paper Machine 12 PT.X-Karawang, namely functional additives and controlling additives. The effect of the addition of additives on Paper Machine 12 PT.X-Karawang namely, Dry Strength can increase the strength of the paper when used in dry conditions, Sizing Agent (Internal Sizing) functions to control liquid penetration, Surface Sizing Agent (Surface Sizing) functions to level the surface of the paper, Filler as filler, Dyes can give color to paper, OBA serves to increase the brightness of paper, Biocide functions to inhibit bacterial growth, Defoamer functions to prevent foam formation and Retention Aid can increase fiber retention. Keyword: Controlling Additives, Functional Additives, Paper, Paper Machine","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124989142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ANALYSIS OF THE EFFECT AMOUNT OF PLATE, DIAMETER PORT, AND WIDTH OF COMPRESSION ON INTERCOOLER PERFORMANCE IN PT INDONESIA POWER","authors":"E. Prastyo","doi":"10.33603/jgst.v4i2.3450","DOIUrl":"https://doi.org/10.33603/jgst.v4i2.3450","url":null,"abstract":"ABSTARCT This analysis to determine the performance of the intercooler based on actual data, and the intercooler's performance against design specifications changes using the NTU method. Variable design specifications in the study are the number of plates, compressed area, and port diameter values from intercooler specifications provided by the company. The results of the inter-device performance analysis of compatibility with the specifications required by the company amounted to 99.40%. The results of the first trial of the tool specifications point the compatibility value to increase to 99.98% by increasing the number of plates from 79 to 150 plates, reducing the compressed area value from 0.47 to 0.2 m and increasing the port diameter value from 0.2 to 0,5 m. The results of the trial 2 tool specification showed a decrease to 86.51% due to changes in variable variables, by the number of plates to 25, raising the compressed plate width to 0.5 meters and increasing the port diameter to 0.6 m. The highest overall heat transfer value on","PeriodicalId":419103,"journal":{"name":"Journal of Green Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130778750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}