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All Journal BERKALA FISIKA SAINS DAN MATEMATIKA YOUNGSTER PHYSICS JOURNAL
Hernowo Danusaputro
Departemen Fisika, Fakultas Sains Dan Matematika, Universitas Diponegoro, Semarang
Mathematics Physics

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Journal : BERKALA FISIKA

 1 
DETERMINATION ROCK DENSITIES OF ULUBELU GEOTHERMAL LAMPUNG BY USING GRAVITY METHOD COMBINED WITH BOREHOLE METHOD Suharno, Suharno; Danusaputro, Hernowo
BERKALA FISIKA Vol 9, No 2 (2006): Berkala Fisika
Publisher : BERKALA FISIKA

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Abstract

The Ulubelu geothermal system is located within Tanggamus volcanism. Rock densities were measured from wells Rendingan (Rd), Kukusan I (Kk1), Kukusan II (Kk2), Ulubelu II (UBL2) and Ulubelu III (UBL3). A terrain density estimate was made across line GG’ using the Nettleton method. The measured densities results, show values ranging between 2.60 x 103 kg m-3 and 2.70 x 103 kg m-3.  The density estimated profile is presented in Figure 2 shows the density of about 2.70 x 103 kg m-3. Combined with the results from the laboratory measurements of borehole samples and density estimated, those suggest as  the mean density of upper continental crust commonly used for the reduction of Bouguer anomalies (2.67 x 103 kg m-3).
Analisis Velocity Model Building Pada Pre Stack Depth Migration Untuk Penggambaran Struktur Bawah Permukaan Daerah ”x” Triarto, Yose Rizal; Danusaputro, Hernowo; Harmoko, Udi
BERKALA FISIKA Vol 13, No 1 (2010): Berkala Fisika
Publisher : BERKALA FISIKA

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Pre Stack Depth Migration method has been carried out for 2D seismic reflection data on Line KPH-11807 at “X” area. This method was chosen for reconstruction geology features and imaging the subsurface structure. Based on previous investigation which done October, 2004-January, 2005, Line KPH-11807 at “X” area was a potential development as hydrocarbon prospect area which complex geology structure and strong lateral velocity variations. In the same area has been done previously with Pre Stack Time Migration by Elnusa Geosains, PT. Therefore the result of the PSDM can be compared to PSTM method. Seismic section with complex geology structure and/or strong lateral velocity variations area, which often there are at seismic data migrated stack can be overcome using an accurate velocity model. Velocity model building with the IVMB (interval velocity model building) concept consist of the coherency inversion and global tomography yield the right subsurface geological model. Hereinafter the velocity model will be used for the PSDM (pre stack depth migration) process. Result of PSDM shows a significant image enhancement, able to assure the reflection pattern at the horizons with strong lateral velocity variations and give the more coherence resolution compared with Pre Stack Time Migration seismic data. This study is very valuable in building exploration concept and development of the area, especially in a complex structure with strong lateral velocity variations.   Keywords: PSDM, velocity model building.
PEMBUATAN SOFTWARE PENCATAT PENGUNJUNG PERPUSTAKAAN MENGGUNAKAN BARCODE DAN MYSQL BERBASIS BORLAND DELPHI 7.0 Apriana, Apriana; Danusaputro, Hernowo
BERKALA FISIKA Vol 12, No 4 (2009): Berkala Fisika
Publisher : BERKALA FISIKA

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The library visitors counter system using barcode and MySQL based with Borland Delphi 7.0 has been done for ease in counting the visitors in a library and data to be displayed more accurate and comprehensive. Bar code which printed on visitors card is aimed at barcode scanner to read the code of the identity of visitors who will enter the library. At Borland Delphi 7.0 uses the pascal programming language that is integrated with the input of barcode and database MySQL able to display the time visitors enter the library. From this research it was found that Borland Delphi 7.0 software can read the records in the MySQL database and display properly on a monitor in accordance with the data stored on the visitors database.   Keywords : library, barcode scanner, Borland Delphi 7.0, code barcode, MySQL
Uji Nilai Tahanan Jenis Polutan Air Laut Dengan Metode Ohmik Dan Geolistrik Tahanan Jenis Skala Laboratorium Dwi Indriana, Rina; Danusaputro, Hernowo
BERKALA FISIKA Vol 9, No 3 (2006): Berkala Fisika
Publisher : BERKALA FISIKA

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Geoelectric method and ohmic method used to investigate sea water intrution (salinity) in aquifer layer.Resistivity data aquisition for 3 layer model and 3 concentration of salinity was in laboratory scale. By comparing resistivity data before and after adding sea water we get resistivity value for each layer. The research result is decreasing of resistivity value for increasing salinity concentration.   
PEMBUATAN SOFTWARE MONITORING JUMLAH PRODUKSI KERUPUK MENGGUNAKAN BORLAND DELPHI 7.0 Adiyani C, Mirsari; Danusaputro, Hernowo
BERKALA FISIKA Vol 14, No 3 (2011): Berkala Fisika
Publisher : BERKALA FISIKA

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The monitoring program for the crackers counter has been done by Borland Delphi 7.0. The results of this program is intended to help the manager’s job in monitorin the amount ofcracker produced by industry. This program using Borland Delphi 7.0. While to find out the cracker pieces which fellfrom the conveyor using photodiodes sencors and lasers as light sources directed at the sensorphotodiodes. When the sencor detected a cracker pieces which fell from the conveyor, the sensorsend a signal to the microcontroller for processing and then send to computer via serialcommunication. On computer, that data is received by Borland Delphi 7.0 program to displayedand stored in Microsoft Access. The system has been realized successfully and can printer the data stored in databases sothat the amountof crackers produced will be known.Keyword: Crackers, Borland Delphi 7.0, Microsoft Access, photodiodes sencors, lasers
Co-Authors Agus Muhidin Agus Muhidin Ali Djamhuri Anjar Evita Anjar Evita Apriana Apriana Dimas Pramudito Gian Antariksa Kusworo Adi Luxy Rizal Fathoni Mirsari Adiyani C Moh. Irfan Saputra Haris Mualimin Mualimin Muhammad Irham Nurwidiyanto Muhammad Isom Ashar Muhammad Mualimin Nur Annisa Prasetyo Abdi Retno Septiani Rina Dwi Indriana Rr. Tony Yulianto Saiful Widianto Sheyza Rery Dynza Anggary Siti Helmyati Tabah FR Tyas Vicri Hijria Udi Harmoko Yose Rizal Triarto