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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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IbM KELURAHAN GULUREJO (KAWASAN PENGRAJIN BATIK) UNTUK MENGATASI MASALAH PENCEMARAN LINGKUNGAN AKIBAT LIMBAH CAIR BATIK Pratiwi, Yuli; Santoso, Gatot; Waluyo, Joko
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 7 No 1 Agustus 2014
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Batik wastewater in the hamlet Mendiro and Sembungan, Village Gulurejo, District LendahKulonProgo Regency is still a problem for batik craftsmen and society. Contamination of well water and river water in the Village Gulurejo due batik effluent, causing adverse health effects and cause a skin disease such asItchingand other skin disorders.The purpose of this IbM program is to increase knowledge about the technology and batik effluent treatment procedures batik so that the quality of effluent discharged to the environment according to the Liquid Waste Quality Batik is valid and does not pollute the environment. To achieve these objectives there should be a batik wastewater treatment equipment that is easy in operation and can be used interchangeably by batik craftsmen. Achieved results or findings is the realization of sewage treatment plants in the form of batik assemblies elektrokoagulan engineering technology with a method that is effective, efficient, easy in operation and requires a power source of120 watts. Wastewater treatment plant that includes batik: batik waste tank capacity of 500 liters; elektrokoagulan tub capacity of 100 liters; 2 bath deposition capacity of 4,000 liters; 3 bath filtration capacity of 6000 liters which includes coral filter media, split and sand & activatedcharcoal.

ANALISIS KERUSAKAN POROS BRINE INJECTION PUMP Kartikasari, Ratna; -, Antony
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 7 No 1 Agustus 2014
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

PT. Geo Dipa Energy Dieng unit is one form of industry exploiting geothermal steam(vapor) that uses abrine injection pump. Brine injection pump is a pump for injecting brine into injection wells. Pump using the VC type is the type of pump that has suction and discharge nozzle shead. The problems that always arise in the operation of the brine injection pump shaft is break age of component smade â€‹â€‹of stainless steel SS420 in are latively short time. This study aims to determine the cause of brine injection pump shaft break age in avery short time.Stages of an alysis performe distesting the chemical composition using spectrometry and EDAX, macrophotoonfracturesurfaces, and microphoto on the area closest to the fracture surface using The results showed that the initial damage occurs precisely in the initial crack. Further more,the crack propagation occurs according to the loading pattern until the ductilet earing occurs before fracture. Generally, the pattern of fracture indicate sinter-crystalline pattern at the beginning of the trans-crystalline cracks and any subsequent stages until fracture occurs. SEMindicate the presence of Cr carbides with elongated patterns that indicatethe cause of fracture. This causes the carbide concentration are as vulnerable tocorrosiveenvironments, so that when the Cl-ions contained in the brine contactaggressively in this area then began collaborating between corrosion and dynamic load causes the initial crack and followed bycrack propagation that very fast into the brittle fracture pattern.

PENGUKURAN KESEIMBANGAN LINTASAN PRODUKSI KERAMIK DENGAN METODE HELGESON DAN BIRNIE DI PT.XYZ Sinaga, Tuti Sarma
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 7 No 1 Agustus 2014
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

This research addressed the issue of the PT. XYZ production line balancing which produces powder and ceramic. The completion time of the production line is important because there are differences in the capacity of the machines, especially on powder machine and press machines. This approach is done by using the Helgeson and Birnie method by considering the activities processing time on the production floor. This method increase Balance Delay of powder process at point 0.3333 and Balance Delay of ceramics process in Press A1 and A2 in the Press is 0.1968 and 0.2185. The level of powder process efficiency is 65.82%, while level of powder process efficiency is in Press A1 is 80.31%. The level of efficiency in the production of ceramics in Press A1 is 74.07%

SISTEM REKOMENDASI: BUKU ONLINE DENGAN METODE COLLABORATIVE FILTERING Irfan, Mohammad; Cahyani, Andharini Dwi; R, Fika Hastarita
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 7 No 1 Agustus 2014
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

The book is a source of information regarding all aspects of life, especially education. However, low interest in reading among the public is a major issue in education today. Recommendation systems can help recommend the reader to more easily obtain information about the books to be read. Therefore, in this study made an online book recommendation system using Collaborative Filtering. Collaborative Filtering is one of the methods that can be used in making the recommendation system. The results of this study showed that the average value of the MAE (Mean Absolute Error) on trial 1 (1.064) is smaller than 2 trials (1.21), 4 trials (2,474) and test 5 (3.526). This shows that the more the amount of data used and if there is a user who has never rate a, then the resulting system is relatively inaccurate and generate recommendations if using Collaborative Filtering bad.

MICROCONTROLLER SEBAGAI PENGENDALI WAKTU PENYIRAMAN PADA TANAMAN BUAH-BUAHAN SISTEM TABULAPOT Watiningsih, Tri; Nursuwening, Yohana; AM, Reni Sulistiyowati
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 7 No 1 Agustus 2014
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Availability of land plants is the reason why they do not want to plant crops, especially fruits such as guava, kedondong and others, as academics eager to implement and introduce tabulapot plants that need hygienic fruits can be realized. Along with the question, it is necessary for the introduction of increased community participation in meeting the needs of their own fruits the land more hygienic through Research Lecturer Restoration "555 timer IC with Timer part of Viewer In tabulapot plants" and utilize the former cans or buckets of used as media cropping so as to implement the principles of the 3Rs. Technology is one of the breakthroughs that more and more developed by the designers of automated tools as a replacement for the operation of a manual system to an automated system, all work will work automatically with an error rate that can be as small as possible. Besides, the technology is expected to replace automated tool as an object or function of the human actors on each machine. Housing average land trying to take advantage of the narrow yard of his home for growing useful plants, including plants tabulapot, to overcome the problem of narrow land and water provision, which the working principle of a tub of water pumped into the potted plants automatically using a 555 timer IC , with automatic watering tabulapot expected to overcome the above problems from manual to automatic watering.

PERANCANGAN BLADE AIRFOIL DENGAN BANTUAN PROGRAM TRANSFORMASI JOUKOWSKY Rusianto, Toto; Setyaningsih, Emy
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 7 No 1 Agustus 2014
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Design cross section of wind turbine blades with airfoil cross-section can be made from a mathematical approach. The mathematical formula was discussed for airfoil shape from Joukowsky equation, that was developed by Nikolai Zhukovsky Egorovich. The problems would appear if used the Joukowsky equation settlement for design with manual, it could take a long time. The problem solving for the mathematical could use graphic user interfaces (GUI) program and the design for implementation could use computer aided design (CAD) program. The Joukowsky transformation was performed by conformal mapping through the transformation of a complex function from one coordinate system to another, which circle shape was transformed to airfoil shape. Ideal airfoil shape was obtained with observed of the transformation radius and center of the circle.

PERBANDINGAN METODE SOM (SELF ORGANIZING MAP) DENGAN PEMBOBOTAN BERBASIS RBF (RADIAL BASIS FUNCTION) Cahyani, Andharini Dwi; Khotimah, Bain Khusnul; Rizkillah, Rafil Tania
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 7 No 1 Agustus 2014
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

In many clustering systems many methods was used to cluter-ization, one of which is the SOM (Self Organizing Maps). In our study we used two approaches. The first approach was a lawyer-cluster's using SOM-RBF used in the training data and could be expected to result in better cluster. And the second approach clustering was used of SOM.Comparison of both methods is based on the application of the data derived from the dataset movielens.org site. Comparative assessment using three scenarios, namely the MSE as a stop condition on the running time, the MSE as the stop condition of the epoch and the learning rate, and MSE as the stop condition of the actual value of the MSE. With this running time is detected which is more rapid approach to the time span for extracting training data. Based on the results of experiments performed using 500 data, which is applied to clusters 3 and 4 lead to the conclusion that the first approach has the value of MSE is actually closer to the absolute value of MSE as compared to the second approach.

REDUCING DEFECTIVE OF ROLL M-70 PRODUCT ON CASTING PROCESS -, Sukirman; Primandhika, Enden; B, ,Huda Muhamad; M, Deros B
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 7 No 1 Agustus 2014
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Statistical process control (SPC) is a method of monitoring the production process with the goal of maintaining product quality during the production process. Thus, once the problems (variables)have resulted, the repair process can be immediately identified and carried out.However, in some cases, the application of SPC is not maximized. This was caused by the lack of a systematic procedure that was usedto guide the operator in applying statistical process control. Therefore, this study offers a systematic procedure to guide the operator in applying SPC. Systematic procedure is performed with the literature study and direct observation in manufacturing companies. In order to apply statistical process control, several statistical tools are accommodated according to their needs and objectives. Thus,it results systematic application of SPC procedure which consists of 15 steps and is divided into two concepts.Indicator is applied to determine the systematic procedure to qualify whether the test is applicable and can improve the ability of the process. Definition of applicable is able to guide the operator in applying SPC and stabilize the process. Systematic procedure have undergone testing at the casting factory. Systematic procedures otherwise applicable and may improve the ability of the improved process.

Jurnal Technoscientia Vol 1 no 2 Februari 2009-Cover-Daftar isi Technoscientia, Jurnal Teknologi
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscentia Vol 1 No 2 Februari 2009
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Jurnal Technoscientia Vol 1 no 2 Februari 2009-Cover-Daftar isi

Jurnal Technoscientia Vol 1 no 2 Februari 2009-Full Paper Technoscientia, Jurnal Teknologi
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscentia Vol 1 No 2 Februari 2009
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Jurnal Technoscientia Vol 1 no 2 Februari 2009-Full Paper

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