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<![CDATA[GEOMORFOLOGI DAN MORFOMETRI DAERAH ALIRAN SUNGAI (DAS) TINALAH DI KABUPATEN KULONPROGO DAERAH ISTIMEWA YOGYAKARTA ]]>
<![CDATA[Septian Vienastra]]>
<![CDATA[ JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 1 Agustus 2018 ]]>
Publisher : <![CDATA[Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta ]]>
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DOI: 10.34151/technoscientia.v11i1.111
<![CDATA[Tinalah Watershed is part of the Progo Sub-watershed. The Tinalah River flows to southeast and its outlet on the Progo River. Tinalah Watershed has a resource that has not been utilized optimally, road network is good enough, there are farms and plantation. Parameters that measured and analyzed include geomorphological conditions and calculation of morphometric variables. Geomorphological conditions in this watersheds most of them are hills stretching from north to south with varying degrees of erosion. Landform in this watershed Tinalah form of the origin of fluvial, structural, and denudational process. Based on the calculation of watershed morphometric the following results are obtained: Area watershed (A) of 44.43 km2. The number of River Order (Nu) in each river order from 1 to 5 respectively is 136, 25, 8, 2, and 1. Bifurcation Ratio (Rb) at each order of the order ranging from 1 to 4 respectively is 5.44; 3,125; 4 and 2. Circulatioan Ratio (Rc) value is 0,558. Main river length (L) is 13.02 km, River Density (Dd) 2.77 km / km2, Length and Wide of Watershed 11.05 km and 5.44 km. The value of the river slope (Sb) is 6.8% and the Slope of Watershed (So) is 43%.]]>
<![CDATA[OTOMATISASI SIRKULASI AIR PADA INSTALASI AQUAPONIK DENGAN PANEL SURYA (SOLAR CELL) SEBAGAI SUMBER ENERGI ALTERNATIF ]]>
<![CDATA[Fifin Hindarti]]>
<![CDATA[ JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 1 Agustus 2018 ]]>
Publisher : <![CDATA[Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta ]]>
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DOI: 10.34151/technoscientia.v11i1.112
<![CDATA[New and Renewable energy is not only an alternative energy that can meet increasing energy needs, but also green energy that does not cause harmful effects on humans and the environment such as energy derived from fossils. The application of solar cells as a source of electrical energy to modern agricultural systems, especially the aquaponics system is one of the efforts to develop new and renewable energy that is environmentally friendly. This research is a technological innovation that can cover the weaknesses of aquaponic systems in general by using solar panels to convert solar energy into electrical energy and equipped with water circulation automation technology so that the water needs are always guaranteed. The design of automatic water circulation regulator hydroponic planting method uses a timer as an automatic, solar panels as energy converters, solar charge controller as a regulator of electric current balance. The implementation of this research consists of several stages, namely: the initial data collection stage, the system development stage, and the research data collection stage. The results showed that the water pump in the aquaponic fish pond on the first, second and third days showed that the water pump was 12 V and the average flow of the fish pond water pump was 1.15 A. The data also showed that The highest measurement carried out for 3 days resulted in an average voltage of 12.68 V and a current of around 1.75 A, and the lowest measurement produced an average voltage of 12.42 V and a current of around 1.63 A. Based on the data in the study this, solar panels with a large 50 wp can meet the load requirements (water pump) to operate so that they can help circulate water in aquaponic installations.]]>
<![CDATA[PURIFIKASI BIOGAS MENGGUNAKAN PELET SEKAM PADI TERAKTIVASI UNTUK MENINGKATKAN KONSENTRASI CH4 DALAM BIOGAS ]]>
<![CDATA[Rosiana Indrawati]]>;
<![CDATA[Joko Susilo]]>
<![CDATA[ JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 1 Agustus 2018 ]]>
Publisher : <![CDATA[Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta ]]>
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DOI: 10.34151/technoscientia.v11i1.113
<![CDATA[The availability of fossil fuels as the main supplier of national energy is increasingly expensive and limited. Biogas appears as an alternative energy source. The purity of CH4 produced by biogas becomes very important, because it affects the calorific value produced. This study aims to determine the effect of biogas purification using rice husk pellet adsorbent on CH4 content in biogas. The independent variable is the height of the adsorbent 5 cm, 10 cm and 15 cm. Contact time is 30 minutes, 60 minutes and 90 minutes. While the controlled variables include activation of adsorbents with heating temperatures of 1200C. The dependent variable observed was the percentage of CH4 content before and after purification. Sampling was carried out on day 20. Based on the gas chromatography test results showed that the largest CH4 gas content was found in SPWT90TA5 purification reactor, rice husk adsorbent namely 5 cm adsorbent height variation and 90 minutes residence time which was 32,393 with a percentage of CH4 content increase of 260.3% from the initial content of CH4 gas before the purification process which was 8.99. And the lowest CH4 gas content is in the SPWT60TA 10 sample which is 6.252 or reduced by 30% from the initial CH4 content before purification is carried out. The conclusion is that biogas purification using rice husk pellet adsorbent can adsorb impurities in biogas and increase methane levels in biogas.]]>
<![CDATA[PENGOLAHAN LIMBAH CAIR RUMAH MAKAN DENGAN SISTEM KOMBINASI PRESIPITASI-AEROBIC BIOFILTER ]]>
<![CDATA[Purnawan -]]>;
<![CDATA[Angge Dhevi Warisaura]]>;
<![CDATA[Agnes Setyaningrum]]>
<![CDATA[ JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 1 Agustus 2018 ]]>
Publisher : <![CDATA[Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta ]]>
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DOI: 10.34151/technoscientia.v11i1.114
<![CDATA[Restaurant business lately is rapidly developing in big cities along with the many requests by people who want food service with fast, practical and food variation. One of problem that arises due to increased restaurant / restaurant activities is the contamination of water sources. Waste water containing organic can decompose or be degraded by microorganisms so if the waste water thrown into a body of water it will increase the population of microorganisms, and that will increase the BOD level, then the soap will cause an increase in the pH of the water. According to Government Regulation No. 82 of 2001 concerning Water Management and Water Pollution Control, there are domestic waste water is required to be processed first before being discharged into public channels and meeting quality standards according to the Decree of the Minister of Environment Number: Kep-51/MENLH/10/1995 while for activities in the DIY area the quality standard refers to Yogyakarta Special Province Regional Regulation Number 10 Year 2017.From the results of the research conducted, the optimum conditions for the Saponification process in addition of 17 ml / 1000 ml NaOH waste obtained fat/oil content of 8.7 mg / L and pH 11.35 with the jar test results to determine the volumetric coagulant dose (Aluminum sulfate 5 %) is 15 ml / 300 ml of waste and results of Turbidity 8.2 NTU, Color 189 PtCo and pH 7.5, for the optimum time of the aerobic biofilter process for 8 hours with the results of BOD analysis 24.12 mg/L, COD 42, 34 mg / L and Fat / oil 4.2 mg/L it has fulfilled the quality standard according to Decree of the Minister of Environment No. Kep-51 / MENLH / 10/1995.]]>
<![CDATA[DESAIN DAN IMPLEMENTASI SISTEM MONITORING TEGANGAN DAN ARUS MOTOR INDUKSI TIGA PHASE MENGGUNAKAN KONSEP INTERNET OF THINGS (IOT) ]]>
<![CDATA[Heru Susanto]]>;
<![CDATA[Agus Nurcahyo]]>
<![CDATA[ JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 1 Agustus 2018 ]]>
Publisher : <![CDATA[Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta ]]>
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DOI: 10.34151/technoscientia.v11i1.115
<![CDATA[Monitoring for voltage and current in a three-phase induction motor that is widely used in industry needs to be carried out continuously to ensure that motor performance remains good. Utilizing the Internet of Things (IoT) can help carry out this monitoring task to minimize the existence of human error factors. Design and implementation of a system is needed to monitor voltage and current in a three phase induction motor using the IoT concept so that monitoring can be done anytime and anywhere as long as it is connected to the internet. This system design consists of hardware and software that works to monitor the voltage and current that comes from a three-phase induction motor. The hardware part consists of the NodeMCU+ESP8266 module, 16x2+I2C LCD module, ACS712 current sensor module, AC voltage sensor module, CD4051 analog IC multiplexer, and power supply. The software part is a program algorithm that contains a flow of voltage and current readings to be displayed on IoT services named Thingspeak. The appearance of the Thingspeak application is designed to present data readings of three-phase voltage sensors and readings of three-phase current sensors. The results of the research show that the system designed has been implemented to monitor voltage and current in an three-phase induction motor based on IoT. The data displayed in Thingspeak consists of three phase AC voltage and three phase AC current. The test results show the difference between the data on Thingspeak with a measuring device which is 1% for phase R voltage, 2% for S phase voltage, 1% for phase T voltage, 37% for phase R current, 7% for S phase current, and 13% for phase T current.]]>
<![CDATA[METODE GENERALIZED SPACE-TIME AUTOREGRESSIVE UNTUK PERAMALAN PERTUMBUHAN EKONOMI DI KAWASAN TIMUR INDONESIA ]]>
<![CDATA[Rokhana Dwi Bekti]]>;
<![CDATA[Noviana Pratiwi]]>;
<![CDATA[Petronella Mira Melati]]>
<![CDATA[ JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 1 Agustus 2018 ]]>
Publisher : <![CDATA[Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta ]]>
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DOI: 10.34151/technoscientia.v11i1.117
<![CDATA[Generalized Method of Space Time Autoregressive (GSTAR) is one of spatio temporal method. This method modifies the spatial dependencies among location by using the time series data or time lags. This research applies the GSTAR for forecasting economic growth in Eastern Indonesia. The economic development of some provinces in the region, which is far from state of capital, is highly dependent on access to the facility centers of economic activity, access to education, access to health facility, and others. Thus forecasting information by taking into account the spatial aspect (the relationship between the provinces) and time is needed to assess the economic development of several periods ahead. GSTAR (1;1) was selected for the forecasting. Parameter estimation using least squares build the different parameter in each province. Based on comparisons with ARIMA method, GSTAR provide better forecasting results.]]>
<![CDATA[Aplikasi Kontrol Lampu Rumah Berbasis Smartphone Android untuk Mendukung Smarthome ]]>
<![CDATA[Erfanti Fatkhiyah]]>;
<![CDATA[Muntaha Nega]]>;
<![CDATA[Uning Lestari]]>
<![CDATA[ JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 1 Agustus 2018 ]]>
Publisher : <![CDATA[Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta ]]>
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DOI: 10.34151/technoscientia.v11i1.120
<![CDATA[Along with the rapid development of technology that runs dynamically, then this has a lot to give a significant effect on the field of property. Utilization of electrical energy is currently less effective because many household electronic appliances that use electrical energy and its use is very excessive. Excessive use of electrical energy will cause electrical energy to be scarce. Technological developments such as smart phones that have many innovations to overcome the problem of use or electricity savings. Electrical switches can be replaced by using a relay and controlled via a microcontroller connected to a pre-programmed smart phone. With the existence of Ethernet shield equipment that can communicate with the microcontroller through serial communication with the command communication on / off switch via a smart phone with wireless connection to the Ethernet shield equipment is a solution to overcome the switch electrical switch, android-based smart phone that has been programmed lamp control can turn off or turn on home lights with distance to the range of available wifi connections.]]>
<![CDATA[ANALISIS HUBUNGAN AKTIVITAS KENDARAAN BERMOTOR TERHADAP KONSENTRASI SO2 DAN NO2 DI UDARA AMBIEN (STUDI KASUS: JL. PANEMBAHAN SENOPATI YOGYAKARTA) ]]>
<![CDATA[Sri Hastutiningrum]]>;
<![CDATA[Sri Sunarsih]]>;
<![CDATA[Imelda -]]>
<![CDATA[ JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 11 No 1 Agustus 2018 ]]>
Publisher : <![CDATA[Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta ]]>
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DOI: 10.34151/technoscientia.v11i1.121
<![CDATA[The aims of this study is to determine the correlation between vehicle traffic activity and the effect of sampling time on the SO2 and NO2 concentration in ambient air. The sampling location is on Jl. Senopati Yogyakarta. Sampling was carried out by an air absorbtion tool with 1.5-meter-high auxiliary from the ground. To measure SO2 using Pararosanilin method and Griess Saltzman method for NO2. The stages of this study begin with the preparation of TCM absorption solutions for SO2, Griess Saltzman absorbent solution for NO2, calibration curve manufacture, and vehicle volume calculation. Determination of concentration is done by UV-Vis spectrophotometer Thermo Scientific Genesys 20. Time sampling is divided into weekdays (Tuesday-Wednesday) and weekend (Saturday-Sunday) with sampling time on 03.00-04.00, 07.00-08.00 a.m, and 12.00-01.00, 04.00-05:00 and 07.00-08.00 p.m. The result of the study shows that the concentration of SO2 and NO2 in ambient air is not related (correlated) with vehicle activity at Jl. Senopati Yogyakarta,as well as sampling time that did not affected. The highest SO2 concentration was recorded at 232,05μg/Nm3 while the highest NO2 concentration was 17.9522 μg/Nm3. Both is not exceed of air quality standard 900μg/Nm3 and 400 μg/Nm3.]]>
<![CDATA[KETERDAPATAN DAN TIPE MINERAL PADA BATUBARA SERTA METODE ANALISISNYA ]]>
<![CDATA[Edy Nursanto]]>;
<![CDATA[Arifudin Idrus]]>;
<![CDATA[Donatus Hendra Amijaya]]>;
<![CDATA[Subagyo Pramumijoyo]]>
<![CDATA[ JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 4 No 1 Agustus 2011 ]]>
Publisher : <![CDATA[Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta ]]>
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DOI: 10.34151/technoscientia.v4i1.124
<![CDATA[Coal is sediment composed by organic and inorganic materials with organic contents that more than 50%.The organic matters are derived from the remaining plants and have been decomposition and changes in physical and chemical properties. Based on their abundance, then the minerals in coal can be divided into primary minerals (major minerals), extra minerals minor minerals) and trace minerals. Consist of the major minerals are clay minerals and quartz while the minor minerals are carbonates, sulfides and sulfates. Analysis that used for mineral in coal is Microscopic optical, Scanning Electron Microscopic (SEM), Electron Probe Micro Analyzer (EPMA), and x-ray Diffraction (XRD).]]>
<![CDATA[ANALISA CHROME DEPOSIT DAN HARDNESS PADA PROSES HARD CHROME DENGAN VARIASI ARUS UNTUK RODA GIGI SEPEDA MOTOR ]]>
<![CDATA[Basuki Widodo]]>;
<![CDATA[Wahyu Panji Asmoro]]>
<![CDATA[ JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 4 No 2 Februari 2012 ]]>
Publisher : <![CDATA[Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta ]]>
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DOI: 10.34151/technoscientia.v4i2.125
<![CDATA[Most of common public equalizes term chrome metal bedding type cum all. When we call elektroplating which meraka intention is chrome. Chrome is metal bedding but in the application of his(its is applied in the form of solit like: mobil/motor, engine block awning, bumper and other aksesoris. Fundamental bedding applies nipple plating, that is layering metal with nipple base material this thing aim to get smooth equiamplitude surface and gleams. Just nipple doesn't make equiamplitude surface of metal arranged in layers gleams. After arranged in layers with chrome then equiamplitude surface of metal arranged in layers gleams glittering like at a mirror. In bedding of hard chrome it is important to know how big level of hardness to be gotten better bedding result, besides need to be known thickness of deposit so that can protect substance from friction with other substance. At this research done various current when bedding process of hard chrome. Current applied is 15 Amperes, 20 Amperes, 25 Amperes at temperature 450 C. Is expected with existence of various current can yield level of varying hardness and thickness, so that knowable influence various current at process chrome at gear product. From result of research it is got that ever greater of current given increasingly downwards level of the hardness. So do with the thickness is ever greater is current which in giving, increasingly the chrome layer thick.]]>
