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Published by Institut Sains dan Teknologi AKPRIND

ISSN : 19798415 EISSN : - DOI : -

Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Articles 583 Documents

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COMPARATIVE STUDY OF LEAKAGE CURRENT PROPERTIES ON THE NEW-CLEAN PORCELAIN AND EPOXY RESIN OUTDOOR INSULATORS DUE TO VARIOUS PARAMETERS -, Waluyo; Sinisuka, Ngapuli Irmea; -, Suwarno; Djauhari, Maman Abadurachman
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 2 No 2 Februari 2010
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

This manuscript presents the experimental results of leakage current waveform properties which produced on the new-clean porcelain and epoxy resin insulators due to various voltage, temperature, humidity and pressure parameters. The measurements have been done in the hermetically sealed chamber where the parameters could be regulated and monitored or recorded simultaneously. The examined leakage current parameters were wave amplitude, phase angle or power factor, first to thirteenth odd harmonics and THD. The analysis was done with some multivariate statistical tools, such as correlation matrix, pca and scree plot. The results indicated that leakage current amplitude and phase angle were influenced by humidity, indicated by correlation coefficients as 0.56 and -0.88 respectively on new-clean porcelain insulator. Otherwise, on the new-clean epoxy resin insulator, leakage current magnitude influenced to the phase angle as -0.75. These were supported by principal component analysis. Based on the scree plots, the extracted of information quality were higher than 80%.

Jurnal Technoscientia vol 1 no 1 Agustus 2008-Cover-Daftar Isi Technoscientia, Jurnal Teknologi
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscentia Vol 1 No 1 Agustus 2008
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Jurnal Technoscientia vol 1 no 1 Agustus 2008-Cover-Daftar Isi

Jurnal Technoscientia vol 1 no 1 Agustus 2008-Full Paper Technoscientia, Jurnal Teknologi
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscentia Vol 1 No 1 Agustus 2008
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Jurnal Technoscientia vol 1 no 1 Agustus 2008-Full Paper

ANALISIS BIAYA PENGEMBANGAN JARINGAN TRANSMISI UPT JEMBER UNTUK MENGANTISIPASI PERTUMBUHAN BEBAN Saleh, Azmi
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 3 No 2 Februari 2011
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Transmission line needs to make expansion planning to anticipate the load growing every year to avoid over load or bad voltage profile (out the voltage tolerance above 0,95 pu -1,05 pu from base voltage). The analysis of expansion planning is use simulation with PSAT software with assume load growing 10 % every years from preview year. If the line current in transmission has over load, the expansion planning that have to do is adding the line capacity or replacing line cable type. If the voltage profile has badly, the expansion planning that have to do is adding the STATCOM to bus that have problem. The result of analysis the expansion planning of transmission line in UPT Jember for duration 10 years are expansion planning of transmission line in fourth, fifth, eight and tenth years. In ten years also need to adding the STATCOM in Tanggul substation. The estimation of total infestations to cover load growing during 10 years is $3.458.018.86.

ANALISA PENGARUH WAKTU PENCUCIAN 5% NAOH DAN PELAPISAN ACRYLIC TERHADAP KEKUATAN TARIK DAN IMPAK PADA KOMPOSIT SERAT KENAF MATRIK RESIN POLYESTER Widodo, Basuki; Widodo, Feri
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 3 No 2 Februari 2011
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Composite material especially with fiber reinforcement starts growing rapidly with existence of requirement of light and strong material. Beside that, it is easy to be formed and resistant to corrosion. In this last decade, composite material using natural fiber has been implemented by the European automobile producers. Based on those considera-tions research about composite using kenaf fiber as reinforcement material big strength of mechanic for each varation. (1) Kenaf fiber without cleaning, (2) Kenaf fiber with soaking in NaOH for an hour,(3) Kenaf fiber with soaking in NaOH for two hours and with material matrix polyester.Based on the calculation and experimental analysis soaking in NaOH and bedding of Acrylic increase the mechanical properties. So composite resin polyester as matrix with treatment is much better than without treatment.

EVALUASI ERGONOMI DENGAN PENDEKATAN FISIOLOGI DAN PENILAIAN POTENSI RESIKO CIDERA DENGAN METODE QUICK EXPOSURE CHECK PADA BURUH GENDONG WANITA Parwati, Cyrilla Indri; Simanjuntak, Risma Adelina
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 3 No 2 Februari 2011
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

â€œBuruh Gendongâ€ women in Bringharjo market Yogyakarta, still carry loads on their back physically and use manual big basket and shawl. When they carry loads on their back unnaturally, their body postures are too hunchbacked, their heads are bent down and their arms are up-and-down, etc. The performance of the women is not so ergonomic that can makes them have injury. Therefore, it is important to evaluate how to minimize the risk of work accident. Ergonomic evaluation with physiology approach and Quick Exposure Check Method are the methods that can know how much the loads of the labor is and how many risk of injury by evaluating pulse and body posture when they work. Based on the research of â€œburuh gendongâ€, it can be obtained (1) load that was carried on back by the labor around 50 â€“ 100 kgs. It means that the load is overstep than load limit suggested load limit around 10-16 kgs, (2) work load classification based on pulse is high work load, (3) means of energy needed by the labor is 5.15182 kcal/minutes that is overstep standard 4 kcal/minutes, (4) total score of observer is 162 and total score of worker evaluation is 26 are classified as action level 4 which evaluation observed and changed at that time. The conclusion of this research is that â€œburuh gendongâ€ women working in Bringharjo market tends to have injury risk. Therefore, it is suggested to design ergonomic work system by considering characteristics of work, worker, material, and work management.

PENERAPAN POLA HIERACHICAL MODEL-VIEW-CONTROLLER PADA REKAYASA SISTEM BERBASIS WEB FRAMEWORK Hidayat, Eka Wahyu
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 3 No 2 Februari 2011
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Found the problem when doing coding to build a web-based application. To speed up the work, web developer typically uses some code from previous projects, especially for the part related to databases, frame systems, and security systems. If there is weakness of unknown code on the previous project, the weakness will be downgraded to the next project. To overcome these problems, most IT companies now use a web framework for web development because it offers many advantages compared to when writing code from scratch. Web framework has several advantages such as having a pattern MVC or Model-View-Controller. One of the web framework that supports the MVC pattern is CodeIgniter. However, using the MVC pattern alone is not sufficient, to produce a modular program needs to be applied Hierarchical MVC pattern with the addition of Modular Extension in CodeIgniter as did developers BackendPro is a freely licensed applications that provide functionality to perform all the simple tasks usually done over and over re-engineering project in the web such as authentication, permissions, and control panels. In this research will be reviewed as a basis for utilization BackendPro early in the development of web-based applications. The study showed the steps to build a simple application into a web framework using BackendPro and benefits to be gained when developing web applications using a web framework.

PERENCANAAN KEBUTUHAN PRODUK GUNA OPTIMALISASI WASTE DAN LABA DENGAN APLIKASI FUZZY MULTIOBJECTIVE OPTIMIZATION Asih, Endang Widuri; Najah, Arini
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 3 No 2 Februari 2011
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Xx is a company engaged in spinning yarn. This company produces various types of yarns including cotton, rayon, polyester-rayon and polyester-cotton. The problem that often arises at the moment is about optimization of raw materials. During the production process takes, the processing produces waste. This is resulting in unneces-sary costs, thus difficult to achieve optimal benefit. To generate the maximum profit and minimal waste, the company must determine the combination of products and allocate resources optimally. Simak Baca secara fonetik Kamus - Lihat kamus yang lebih detail Terjemahkan situs web mana pun USA Today-Amerika Serikat Museo del Prado-Spanyol OneIndia-Hindi Focus Online-Jerman Vogue-Prancis Marmiton.org-Prancis Machu Picchu-Spanyol NouvelObs-Prancis Nord-Cinema-Prancis Louvre-Prancis Berlingske.dk-Denmark Elle-Prancis Lakukan banyak hal dengan Google Terjemahan Cari resep sushi terbaik di dunia, tentunya dalam bahasa Jepang! Bebaskan kekuatan Penelusuran yang Diterjemahkan Google. Apa sih artinya? Pasang Google Toolbar supaya Anda tidak perlu kesulitan lagi dengan kosakata bahasa asing. Bangun bisnis global Anda. Iklankan ke berbagai bahasa menggunakan Google Peluang Pasar Global. Buku bahasa dalam kantong Anda! Pasang aplikasi Android kami sebelum perjalanan Anda ke Rio. Fuzzy multiobjective optimization is a method for optimized several objective functions bend to several constraints. This method is also application of fuzzy logic for helping company to solve the problems of limited resourse. By analyzing calculation result of linear programming than continued result enter in to fuzzy multi-objective method so to getted optimum product combination base on tolerance of company hoped. Result of research base on fuzzy multiobjective optimization method have got product combination they are rayon 40/1 1601,299 cone with profit Rp. 18170740,4 and waste 118,49 kg. By applying fuzzy multi-objective optimization can reduce waste 8,68 kg.

PERBANDINGAN PEMAKAIAN BAHAN BAKAR CAMPURAN TERHADAP KINERJA MESIN BENSIN 4 TAK Wibowo, Hary; Ristanto, Yudi Ari
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 3 No 2 Februari 2011
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

The ethanol and methanol are derivative compound of alcohol with 115 and 111 octane number, respectively.The blend of both to premium to descrease of their octane number. This research of premium ethanol fuel with 80% premium-20% ethanol composition and premium methanol fuel with 77% premium-23%methanol composition also biopremium Pertamina with 95% premium-5%ethanol composition. The aim of this research to know the performance of engine (torque, power, mean effectif pressure, fuel conversion efficiency), and also emission of exhaust gas (CO,CO2, HC, and O2). The experiment device is Honda Grang C100 motorccle with Twin Chassis Dynamometer methode on variable velocity, 4000 rpm, 5000 rpm, 6000 rpm,7000 rpm, 8000 rpm, and 9000 rpm respectively. The result and calculated of this research indicated that torque, power, mean effectif pressure, and fuel conversion efficiency on the mixed of premium-ethanol 5.71%, 4.91%, 9,58% higher then premium fuel,respectively. The consumption of premium-ethanol mixed fuel 9.1% less then premium fuel. The premium-methanol mixed used indicated that CO (carbon monoxyde) 52.56% less, CO2 (carbon dioxide) 27,82% higher, O2 (oxygen) 11.87% less, then premium fuel used, respectively. Used of biopremium Pertamina fuel indicated that HC (hydrocarbon) 29.78% less then premium fuel.

ERGONOMIC APPROACH IN MAINTAINING THE BALANCE AMONG TOURISM ECONOMICAL POTENCIAL IN BALI (with special reference in Singapadu Tengah Village, Sub-district Sukawati, Gianyar regency-Bali) Parwata, I Wayan; Oesman, Titin Isna
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 3 No 2 Februari 2011
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

At Singapadu Tengah village, sub-district of Sukawati, Gianyar regency is outskirt village with the distance around 10 km from Denpasar city. Since the year 1989, this village has started improving through blossom out of Singapadu Induk village. Site function changes Singapadu Tengah village from agricultural land becomes industrial function and settlement that significantly increases every year. The year of 1990 up to 1995 site function changes around 658 m2 per year, the year 1995 until the year of 2000 reaches 1,09 Ha per year, while in the year of 2000 up to 2005 reaches 1,67 Ha per year. This site function change has caused among others 1) high migration current come to Bali in this time has spread to village area in Bali; 2) arrangement of development distribution by the government has not been yet assertive; 3) the low value of the agricultural product selling, and the agricultural land tax is up; 4) as a result of irrigation system that chage into the connected irigation channel; and 5) consumerism. Through total approach in the ergonomic scope, it is expected to improve the condition of agriculture that is more and more depressed effect as the result from influences of site function change. SHIP (Systematical, Holistic, Interdisciplinary and Participatory) approach as part of total approach is one of the way to maintain function of agricultural land as a sector capable to support public economics in Bali.

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