E-Journal Politeknik Negeri Cilacap
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STUDI STABILITAS SISTEM SUB SURFACE FLOW CONSTRUCTED WETLAND (SSF-CW) MENGGUNAKAN TANAMAN MELATI AIR DAN MEDIA TANAM ZEOLIT UNTUK MENURUNKAN LOGAM Hg
Get PDFAmalgamation to gold in artisanal small scale generally uses mercury (Hg) that decrease the quality of environment especially water. A study of mercury artisanal small scale gold mine waste water was conducted by utilizing simple technology using Sub Surface Flow - Constructed Wetland (SSF-CW) system. This system is a combination of phytoremediation methods using Echinodorus palaefolius plant with zeolite as growth media. The purpose of this study was to determine the stability of SSF-CW in reducing Hg concentration in water. This SSF-CW system model has dimensions of 820 mm x 320 mm x 585 mm consisting of 3 zones, namely the inlet zone, the reaction zone and the outlet zone. The study was conducted with an initial HgCl2 waste concentration of 14.94 mg / L which was carried out in two stages, continuous and batch for 12 hours and lasted for 3 days for each stage. Effluent samples were taken every 0 hours, 4 hours, 8 hours, and 12 hours for mercury concentration analysis using Direct Mercury Analyzer (DMA). The result showed that SSF-CW could support the process of reducing Hg concentration n wastewater with removal efficiency of 98.99%. Echinodorus had the ability to accumulate metals with a BCF value of 9,117 and the accumulation of Hg in the zeolite (as growth media) was still far from the saturated capacity to absorb mercury
SISTEM MONITORING PENGAIRAN OTOMATIS DENGAN METODE LOGIKA FUZZY
Get PDFRice plant which is a source of food for the people, it needs enough temperature, air humidity and high water for maximum growth. The irrigation system is a major requirement in the field of agriculture, especially for rice plant. Some constraints in conventional irrigation, so they need irrigation system automatically. Some previous studies about automatic irrigation were only used one or two parameters and only used fuzzy or IoT. The method offered in this study uses fuzzy logic using 3 inputs and combines the monitoring system in real time based on IoT. The purpose of this study is to determine the effectiveness of fuzzy logic using three inputs to control the automatic irrigation system byreal time monitoring usingIoT. Data obtained by testing in themorning, afternoon, evening, night and using heat and rain treatment then compared using Matlab calculation. From the tool testing, the average precision of the tool comparison using the calculation is 77.13%
PENERAPAN METODE RATIONAL UNIFIED PROCESS PADA PERANCANGAN SISTEM PENGOLAH DATA ARISANKITA
Get PDFArisankita is a business program owned by CV Dwi Idea Kreasi to assist the community in obtaining goods according to their needs and managed cooperatively. The management of the Arisankita system still relies on traditional accounting and is not yet computerized, especially during accessing and storing information. The purpose of this study is to discuss a web-based system for Arisankita\u27s business program by applying the RUP method, to improve the accuracy of data processing at the company, to optimize automatic scheduling, and to increase efficiency, effectiveness and productivity. The RUP (Integrated Rational Process) Method is a system development process that covers the entire development cycle of a device that provides help to assist and be responsible for organizational development, which consists of 4 phases, including initial, elaboration, construction, and transition
SILIKA BEBAS NATRIUM DARI LIMBAH SEKAM PADI SEBAGAI BAHAN DASAR PEMBUATAN MINERAL TRIOXIDE AGGREGATE
Get PDFOne of the basic ingredients of making White Mineral Trioxide Aggregate (MTA) was silica. The sources of silica was from white rice husk ash (RHA) and silica extracted from RHA. Silica could be extracted from natural ingredients in the form of rice husk ash. The purpose of this study were to extract silica from rice husk ash and purify the silica extracted by washing using distilled water to free sodium, so that it could be used as the basic ingredient in making MTA. Sodium was a hygroscopic metal that could cause the presence of pores in MTA material if applied to the teeth. The amount of washing volume varies to a certain volume which indicates that silica was free Na. Based on the results of the experiment it could be concluded that the washing of silica by stirring with distilled water would produce free Na silica by washing 450 mL. This wasnot proven at peak 2θ (300), as well as proof of the presence of silanol and siloxane groups before and after washing with FTIR spectroscopy. In addition, the washing volume also affects the intensity of the –OH peak in wave numbers 1635,64 cm-1 the more volume used, the intensity of the –OH group increases, so that the water hydrated in silica also increases. Silica free Na would be used as the starting material for making MTA which was applied to teeth medicament or root canal treatment
ANALISA PENGGUNAAN SILICON CONTROLLED RECTIFIER PADA ELEKTROPLATING TEMBAGA/BAJA KARBON RENDAH
Get PDFElectroplating is one of the engineering improvements in the characteristics of metal materials. Copper coating is a pre-coating before further coating for steel. The surface area of the material is in line with the strong current requirements required for the normal coating process. However, too much current flowing into the cathode results in erosion at the anode. Silicon Controlled Rectifier (SCR) is a component made of semiconductor silicon. It has a function as a controller or switch. Silicon Controlled Rectifiers can be used to reduce coating currents in copper electroplating. The setting of the coating current can be done on copper electroplating of low carbon steel cathodes with a cross-sectional area of 7500 mm2 of 4.5 A; 5 A; 6 A; 6.5 A and 6.7 A. The best copper coating results with a 10 minute coating time are shown in the current 6.5 A with a coating mass of 1.11 grams and 1.06 grams. This proves the need for a reduction in the maximum flow so that optimal coating is achieved
IMPLEMENTASI EXPERT SYSTEM UNTUK MENGETAHUI PENYAKIT HIV AIDS MENGGUNAKAN ALGORITMA BEST-FIRST SEARCH
Get PDFAccording to UNAIDS until 2018, there are around 690 thousand people with HIV in Indonesia. Until now HIV is a virus that is slow to diagnose, but there are ways that can be used to diagnose the HIV virus. One way to find out whether someone is infected or not is by taking HIV test accompanied by counseling in the clinic (Voluntary HIV Counseling and Testing). Prospective patients feel ashamed during the initial diagnosis of a health examination. To solve these problems, it is necessary to build a system capable to diagnose HIV / AIDS using the best first search algorithm. The result of this study is to be able to facilitate patients checking their health by computerization easily, quickly and precisely, especially about HIV AIDS. Based on the system evaluation of the respondents, RK test results are obtained from the convenient use of the HIV expert system application that has a value of 3.72 with the title of satisfaction. the RK test results from the benefits of using the HIV expert system application has a value of 3.96 with the title of satisfaction
FUNGSI GLCM PADA BACKPROPAGATION UNTUK IDENTIFIKASI SIDIK JARI
Get PDFThe use of fingerprints for identification has been done a lot, both in the police for investigations, in government for absences, in population and much more. To identify fingerprints, various methods are widely used which purpose is to produce a better level of accuracy. This is as reference to find out how important the function of the method will be used before the identification process is applied. The renewal of this research prioritizes how far the function of GLCM (GRAY LEVEL CO-OCCURRENCE MATRIX) is useful to improve the accuracy of fingerprint identification using the backpropagation method. The test results showed that GLCM can affect the increase in accuracy to 83%
HYDROTHERMAL TREATMENT CAMPURAN BIOMASSA DAN PREDIKSI NILAI KALOR HYDROCHAR
Get PDFEnergy needs in Indonesia always increase along with population growth and industrial growth. On the other hand, the abundant availability of biomass waste, especially teak sawdust and corn cobs, encouraged researchers to find the right technique for converting biomass waste to make the waste an alternative energy source. Hydrothermal Treatment is one of the techniques for thermal biomass conversion that can convert biomass into coal-like material called hydrochar. The biomass waste is in a heterogeneous or mixed state.The purpose of this study is to obtain the optimum composition of the biomass mixture to make solid fuels using the hydrothermal treatment method and to do a regression analysis to estimate heating value based on proximate analysis. The biomass waste used in this study was teak sawdust and corn cobs powder. The results from this study are the highest yield of hydrochar in the hydrothermal treatment process of teak sawdust which is equal to 68.1% and the highest calor value in the hydrothermal treatment of biomass with the same composition which is equal to 5402 cal / gram. An equation to predict the value calor hydrochar is HHV = 0.837 (% AC) +0.152 (% VM) +0.389 (% FC) -0.022 (% WC) with an absolute error of 4.11% and a relative error of 0.28 %
PENERAPAN RAPID APLICATION DEVELOPMENT MELALUI SISTEM INFORMASI GEOGRAFIS UNTUK PEMETAAN LEMBAGA PENDIDIKAN ANAK USIA DINI
Get PDFThe growing and development of early childhood education institutions in Cirebon Regency, requires a very accurate location data collection so that information can be quickly accessed and presented. Accurate location data collection can be presented through an information system presentation mechanism from several stages in the system modeling process. System modeling must emphasize a very short development cycle that is needed during system development. This study emphasizes the modeling of the Rapid Application Development system, so that the information system for PAUD location data collection in Cirebon Regency can be produced quickly and accurately in less than 30 working days. Some of the stages developed in this study include business modeling, data modeling, process modeling, and ending with application implementation. The expected result of this research is that the system can help provide information on the location of early childhood education institutions in Cirebon Regency as much as 84,390%, while the quality of information produced is 85,366%, and the response to the system that can be accepted by the community is 84,390%
ANALISA PERBANDINGAN FUZZY LOGIC METODE TSUKAMOTO, SUGENO, MAMDANI DALAM PENENTUAN KELUARGA MISKIN
Get PDFThe application of the Fuzzy Tsukamoto, Sugeno, and Mamdani methods in determining poor families in Sumedang Regency can be done by the three methods using poor family outcomes which differ from the results of all data calculations. From all data calculated using the fuzzy logic method of the Tsukamoto, Sugeno, and Mamdani methods, it can be concluded that there are 4 data classified as poor and 16 data classified as not poor in the Tsukamoto method, 8 data classified as poor and 12 data classified not poor in the Sugeno method, and 10 data classified as poor and 10 classified as not poor in the Mamdani method. These results indicate that each method has different results even though the input used is the same