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INDONESIA
Jurnal technoscientia
Published by Institut Sains dan Teknologi AKPRIND
ISSN : 19798415     EISSN : -     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Arjuna Subject : -
Articles 583 Documents
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PENGGUNAAN STERANA DAN ISOTOP KARBON UNTUK MENENTUKAN LINGKUNGAN PENGENDAPAN ASAL MATERIAL ORGANIK PADA CEKUNGAN JAWA TIMUR BAGIAN BARAT Wiloso, Danis Agoes
Jurnal Teknologi Technoscientia Vol 9, No 2 (2017): Vol 9 No 2 Februari 2017
Publisher : IST AKPRIND YOGYAKARTA

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Abstract

Research area is located at western part of Northeast Java Basin there are still many uncertainties concerning aspects of petroleum geochemistry.The oil and the source rock data from wells and seeps were tested according steranes data, and carbon isotope. The oil-oil correlation in the research area has divided the oil samples into two oil groups. The first oil group is the oil group in which the organic material comes from the mix of high plants and algae where the depositional environment of the source rock for this oil group is more headed for shallow marine (deltaic) environment. The second oil group is the oil group in which the organic material comes from more of the high plants where the depositional environment of the source rock for this oil group is more headed for terrestrial environment.
PENURUNAN BOD PADA BIOGAS KOTORAN SAPI CAMPURAN LIMBAH CAIR RUMAH POTONG HEWAN (RPH) DENGAN VARIASI KECEPATAN DAN LAMA PENGADUKAN Indrawati, Rosiana
Jurnal Teknologi Technoscientia Vol 10, No 2 (2018): Vol 10 No 2 Februari 2018
Publisher : IST AKPRIND YOGYAKARTA

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Abstract

The scarcity of energy sources, especially fuel oil (BBM) has become a world problem. The abundant cattle dung in the community has not been optimally utilized. In addition, the slaughterhouse (RPH) wastewater has not been optimally utilized. The aim of this research is to know the effect of speed and duration of stirring to biogas volume and final BOD concentration on cow dung biogas mixture the slaughterhouse (RPH) wastewater.The experiment used biodigester reactor as much as 5 pieces, 1 as the controller without stirring and 4 others as the test digester with stirring. RPH0 as a control digester without stirring. Variation of stirring speed 5 and 10 rpm and stirring time 10 and 15 minutes. The volume of biogas is measured for 20 days. BOD levels are measured on the last day of the fermentation process.The experiment showed that the highest biogas volume was found on PK10L10 test digester that was mixture of cow dung and the slaughterhouse (RPH) wastewater with variation of 10 rpm and duration of stirring 15 minutes ie 1,331 m3, and the lowest biogas volume was 0,243 m3 in RPH0 digester. The highest decrease in BOD content was 37% in RK10L15 digester and the lowest decrease RK5L15 digester was 12%. The stirring process has a significant effect on biogas production and decrease of BOD concentration in the digester.
FACTORS AFFECTING CONSUMERS’ LOCAL FRIED CHICKEN PURCHASE DECISIONS Emaputra, Andrean; Herliansyah, Muhammad Kusumawan
Jurnal Teknologi Technoscientia Vol 9, No 2 (2017): Vol 9 No 2 Februari 2017
Publisher : IST AKPRIND YOGYAKARTA

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Abstract

There were eight local fried chickens in Special Disrict of Yogyakarta. It makes aquestion about what factors cause successful and unsuccessful local fried chicken. Then,a consumer survey that sought the level of customer satisfaction was done using aquestionnaire. The survey involved 242 respondents that had eaten the local friedchicken. The result shows that the easiness of the outlet to be reached by the consumerand the products price that is competitive are the main factors to lead the local friedchicken to be successful in the market place.
PENGOLAHAN LIMBAH RUMAH TANGGA DENGAN MENGGUNAKAN BUFFLED UP-FLOW REACTOR Artiningsih, Wuryani; Triastianti, Rita Dewi
Jurnal Teknologi Technoscientia Vol 10, No 2 (2018): Vol 10 No 2 Februari 2018
Publisher : IST AKPRIND YOGYAKARTA

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Environmental problems occur because the act of a human hand which then cause disturbance to the environment. Household or domestic activities such as can be and has been shown to cause a decline in water quality. With increasing liquid waste disposal, pollution is increasing so that pollute the environment. Therefore, the authors wish to conduct research of domestic waste water with the aim to reduce levels of phosphate, nitrite and detergent. In domestic wastewater/sewage household, the authors chose to use anaerobic processing using buffled up-flow reactor were made using glass with a length of 100cm, width 25 cm and height 30 cm. The results obtained for the effluent phosphate levels for 0.3502 mg/L on the second replay (the second day), nitrite by 0.1206 mg/L on the second replay (the second day) and detergent was 0.2799 mg/L in the first repeat (on the first day) in terms of the processing of the buffled up-flow reactor capable of lowering the levels of phosphate, nitrite and detergent in water and wastewater. Removal efficiency obtained from the results of wastewater treatment with bufffled up-flow reactor for phosphate content of 47.3%,-13.30% and detergents nitrite 57.8%.
OPTIMASI PENURUNAN KADAR ASAM DAN ANGKA PEROKSIDA MINYAK JELANTAH INDUSTRI KRECEK RAMBAK DENGAN KULIT SINGKONG Erlita, Desi
Jurnal Teknologi Technoscientia Vol 10, No 1 (2017): Vol 10 No 1 Agustus 017
Publisher : IST AKPRIND YOGYAKARTA

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Abstract

Cooking oil is one of basic food consumed by the whole society. One industry that many use a lot of cooking oil is krecek rambak industries at the Segoroyoso, Pleret, Bantul, Yogyakarta. One waste has not managed well in the rambak krecek industries is jelantah oil. The purpose of this research is to get cooking oil regenerate. The cooking oil regeneration done obtained from purification of jelantah oil using adsorbent (carbon active).One of the materials can be used as a carbon active is cassava skin. The skin cassava obtained from the waste of the merchant food. Making carbon active waste skin cassava done with chemicals process because the process simpler than with physics process. In this research, the longer time of submersion jelantah oil with adsorbent then the lesser levels of free fatty acids and peroxides in jelantah oil. The levels of free fatty acids and peroxide value optimally on the day to 6 submersion of 6,3835% and 15,6179Ml.eq/kg.
OPTIMASI PENYERAPAN LIMBAH FOSFAT dan BOD INDUSTRI LAUNDRY DENGAN VARIASI MEDIA TANAM PADA SSF-WETLAND Maria, Ernastin; Puspitasari, Amallia
Jurnal Teknologi Technoscientia Vol 10, No 1 (2017): Vol 10 No 1 Agustus 017
Publisher : IST AKPRIND YOGYAKARTA

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Abstract

Loundry industries have abad effect because most of them dump wastes into gutter or river without prior treatment. This study aims to test the potential of Canna Indica L. water plantsin reducing the pollutant content of loundry water (phosphate and BOD). The main research was done by the differene biomass of planting media which was used that is difference of gravel and sand media on SSF-wetland with title fraction and san media on SF-wetland for 10 days.Waste water used is effluent from Mira Loundry in Kanutan vilage, Sumbermulyo Bantul regency, witht the initial concentration of BOD as big as 231,359 mg/l and PO43-as 1,899 mg/l. The research has show that pollutants concentration in the water waste on the SSF-wetland is increase in the hydraulic retention time. For 10 days research the concentrate of BOD and PO43- decrease in SSF-wetland with canna Indica L. plants using of title fraction media, each become 96,680 mg/l (decrease 7,5%) and 1,715 mg/l (decrease 10%). Will using gravel media each become 67,80 mg/l (decrease 71%) and 1,75 mg/l (decrease 7%). From the data both planting media, gravel and title fraction, are considered to have good capability in phosphate waste removal in this system. For the most optimum BOD waste removal is using gravel media with decrease of BOD concentration become 67,880 mg/l.
HUBUNGAN POWER FAKTOR ISOLASI TERHADAP KEMAMPUAN ISOLASI TRANSFORMATOR DAYA 150/20 KV Mujiiman, Mujiman; Niagara, Aru Purba Ardian
Jurnal Teknologi Technoscientia Vol 10, No 1 (2017): Vol 10 No 1 Agustus 017
Publisher : IST AKPRIND YOGYAKARTA

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Isolation transformer is a critical part of the power transformer, insulation deterioration or failure can cause failure of the operation or even damage the transformer. One method to determine the condition of the insulation is by testing with test equipment tangent delta 4000. In a study conducted, will be testing three-winding transformer isolation using test equipment delta 4000, function test equipment delta 4000 to measure the deterioration of the insulation used as insulating oil, paper and ceramics by measuring the power factor. After testing the insulation transformer three windings using test equipment delta 4000, the test result data was analyzed by comparing the value of the power factor of the standard manufacturer with test results using test equipment delta 4000, when comparing the results are the increase in the value of the power factor in data from tests conducted but the increase in the value of the power factor being tested is still on alert limits because some relationships insulation in the test value exceeds> 0.5 of the standard manufacturer is 0.2. However, these data need to be considered further because the value of the power factor should not be more than one.
STUDI FASIES DAN LINGKUNGAN PENGENDAPAN BATUAN KARBONAT, FORMASI WONOSARI, PADA SITUS GOA JEPANG, DAERAH PESISIR PARANGTRITIS, DESA SELOHARJO, KECAMATAN PUNDONG, KABUPATEN BANTUL, DAERAH ISTIMEWA YOGYAKARTA Tania, Dina
Jurnal Teknologi Technoscientia Vol 10, No 1 (2017): Vol 10 No 1 Agustus 017
Publisher : IST AKPRIND YOGYAKARTA

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This research concerning about Facies and Sediment Environment of Carbonate Rock in Wonosari Formation. Research located at Goa Jepang site, in Parangtritis coastal areas, Seloharjo Village, Pundong Sub District, Gunungkidul District, Yogyakarta Special Region. Geographic position S 7o59’54’’-8o00’14’’ and E 110o19’43”-110o19’58”. Method of research is including rock outcrop profile and petrography thin section for three observer location in Goa 1, Goa 2, and Goa 3, from 18 location of Goa. There are 18 sites of Goa Jepang and it has three facies of stone unit, wackestone, packstone and framestone. Carbonate stone evolution for faciesof wackestone and packstone be in stabilization zone and it is placing Goa Jepang on the back reef-reef flat of depositional environment zone. However, for Goa Jepand 2nd location with framestone facies has different carbonate evolution to the diversification phase to come reef crest-reef front of depositional environment zone.
TATA KELOLA TEKNOLOGI INFORMASI MENGGUNAKAN FRAME WORK COBIT 4-1 DENGAN MODEL MATURITY LEVEL PERUSAHAAN TELEKOMUNIKASI Chandra, Adityawan
Jurnal Teknologi Technoscientia Vol 10, No 1 (2017): Vol 10 No 1 Agustus 017
Publisher : IST AKPRIND YOGYAKARTA

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Information technology significantly affects and determines the management of the company. A framework is needed to ensure that information technology enables companies to maximize profits, Information technology risk management and information technology resources are used efficiently. Evaluation of information technology is needed to better ensure the achievement of business goals. PT. Telkom Witel Yogyakarta a company engaged in the field of telecommunications has been using information technology to support the smooth operation of the company. Assessment of maturity level using COBIT 4-1 framework on information technology governance Telkom Witel Yogyakarta needs to be evaluated, so recommendations for improvement and improvement of information technology governance can be delivered. Research with survey method using questionnaire based on COBIT framework 4.1. Questionnaire of six answer choices from 25 respondents for Deliver and Support (DS) domain and four domains Monitor and Evaluate (ME). SPSS 16 for Windows software is used to process maturity level data. 12 domains are below the expected value: DS.1 (0.79), DS. 4 (0.76), DS.6 (0.19), DS.7 (0.83), DS.9 (0.80), DS.10 (0.13), DS.11 (0.59), DS. 13 (1.11), ME.1 (0.09), ME.2 (0.09), ME.3 (0.76) and ME.4 (1.17). Five domains that have values above expected maturity values: DS.2: 3.00, DS.3: 3.96, DS.5: 3.50, DS.8: 3.96 and DS.12: 3.05. Maturity level of information technology governance in Witel Yogyakarta DS domain and ME domain of 10 information systems with average maturity: 3.17 (defined process). The expected maturity value varies for each domian with a range between the 3.00 level and the 4.00 level. The highest maturity value of the DS domain is DS.3 and DS.8 value: 3.98, the lowest value DS.6: value 2.81. The highest maturity value of the ME domain is ME.3 with a value of 3.24, the lowest value of ME.4 with a value of 2.83.
PERANCANGAN SISTEM PENGAMBILAN KARTU UJIAN ONLINE MENGGUNAKAN FRAMEWORK CODEIGNITER (STUDI KASUS INSTITUT SAINS & TEKNOLOGI AKPRIND YOGYAKARTA) Said, Said; Setyaningsih, Emy; Harmastuti, Harmastuti
Jurnal Teknologi Technoscientia Vol 10, No 1 (2017): Vol 10 No 1 Agustus 017
Publisher : IST AKPRIND YOGYAKARTA

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Taking the test card is part of the academic system Institut Science & Technology AKPRIND Yogyakarta and is an activity that is always done when the student before the exam. Examination card retrieval system that runs for this still use conventional system. This method is still less effective because students have to queue for a long time and also have to come to the campus directly. The proposed system research aims to facilitate students in the process of taking exam cards. System that will be developed web-based (web based), so that this system can be accessed online using both computer and smartphone devices. Research on the online card retrieval system was developed using Codeigniter (CI), one of the framework used to build a website. The development of web-based applications, CI framework has a very fast performance, easy configuration and complete documentation. This research uses waterfall diagram as research method and MySQL as database processing. Testing system conducted in this study by using black box testing method and testing the questionnaire. Black box testing aims to obtain a set of input conditions that will fully implement all the functional requirements of a program. This test concluded that the built application system can function as expected. While testing the questionnaire is done to know user acceptance or user satisfaction to the quality of the system developed. The results of the questionnaire test showed 80.24% of 82 respondents stated strongly agree that with the Online Card Exam Taking System Using Framework Codeigniter can help and provide convenience for students in the process of taking the test card.

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