cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kab. aceh besar,
Aceh
INDONESIA
Journal of Aceh Physics Society
Published by Universitas Syiah Kuala
ISSN : -     EISSN : 23558229     DOI : -
Core Subject : Science,
Physics
Focus of Journal of Aceh Physics Society (JAcPS) provides a forum for original paper works that enhances understanding of physics and their application. Scope of Journal of Aceh Physics Society (JAcPS) paper related to the development of new experimental methods, visualization techniques, material physics, optic, laser and instrumentation in physics is an important part of this journal. Experience gained and lessons learned in building test facilities and in measuring and reducing test data are important aspect of any experimental work. Authors are encouraged to report this experience and to summarize the original data. Archival review paper, short communication, invited papers, discussion of previously published papers, and book reviews are regular feature of the journal, in addition to full-length article.
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Volume 6 Number 1, March 2017" : 5 Documents clear
Material Selection Methodology in Oil and gas Refinery using Heat Material Balances and Flow Diagram Process Sofyan Yusuf
Journal of Aceh Physics Society Volume 6 Number 1, March 2017
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (128.609 KB)

Abstract

Tulisan ini memuat tentang bagaimana melakukan seleksi material pada pengilangan minyak dan gas menggunakan neraca massa dan energi dan diagram alir proses. Seleksi material adalah salah satu dari tahapan utama dalam tahap perekayasaan yang memiliki pengaruh besar terhadap biaya konstruksi pabrik. Salah satu pendekatan terbaik untuk seleksi material pada kilang pengolahan minyak dan gas bumi adalah menggunakan data neraca massa dan energi serta diagram alir proses. Neraca massa dan energi mengandung data komposisi fluida dalam satuan fraksi mol dan beberapa data operasi seperti tekanan, suhu, fasa fluida dan sebagainya yang digunakan dalam proses pemilihan material. Metode seleksi material diawali dengan perhitungan laju korosi pada masing-masing aliran pada neraca massa dan energi. Setelah data laju korosi dihitung kemudian ditentukan besarnya corrosion allowance. Jika nilai corrosion allowance diatas 6.4 mm maka dipilih material yang tahan korosi seperti stainless steel, tetapi jika nilainya dibawah 6.4 mm maka dapat dipilih material baja karbon. Setelah material yang terbaik dipilih kemudian akan dibuat diagram seleksi material dengan menggunakan data diagram alir proses. This paper give us information about how to do a material selection for oil dan gas plant using heat and material balance and flow diagram process. Material selection is one of the main phases of engineering stage that has great impact on the cost of plant construction. One of the best approaches of material selection for oil and gas plant is analyzing heat material balance and flow diagram process data. Material selection shall be reliable, cost effective and also considering market availability and constructability aspects. Heat Material Balance (HMB) contains the composition of fluids in mole fraction and others operation data such as pressure, temperature, fluid phase, etc that used in material selection process. Material selection method begins with the calculation of corrosion rate in each of the streams in HMB. After the corrosion rates are calculated then corrosion allowance (CA) will be determined. If the CA higher than 6 mm then stainless steel material will be selected, but if CA under 6 mm then carbon steel material was selected. After the best materials are selected, the Material Selection Diagram will be developed using Flow Diagram Process. Keywords: Material selection; heat material balance; flow diagram process; corrosion rate; corrosion allowance.
Investigation of Shallow Paleochannel in Banda Aceh based on Electrical Resistivity Tomography Muzakir Zainal; Muhammad Yanis; Umar Muksin; Nazli Ismail
Journal of Aceh Physics Society Volume 6 Number 1, March 2017
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (127.185 KB)

Abstract

Pembentukan daratan pesisir sangat dipengaruhi oleh proses sedimentasi dari material hasil rombakan. Proses sedimentasi pada masa lampau dapat dikaji dengan mempelajari sungai purba sebagai media transportasi material. Survey geofisika metode electrical resistivty tomography dilakukan untuk investigasi sungai purba di Ulee Kareng Banda Aceh. Untuk memetakan sedimen dan geometri sungai purba, pengukuran electrical resistivity dilakukan di sepanjang dua lintasan dengan panjang 240 meter dan spasi elektroda 2 meter. Proses inversi model resistivitas 2D telah dilakukan pada masing – masing lintasan data yang terukur. Hasil electrical resistivity tomography mampu membedakan batas – batas antara setiap lapisan sedimen yang terendapkan di lokasi paleochannel. Sedimen paleochannel secara jelas diidentifikasi dari distribusi nilai resistivitas yang lebih tinggi (15.2–31.6 Ω.m). Berdasarkan interpretasi dari metode electrical resistivity tomography area persawahan merupakan lokasi sungai purba pada masa lampau. The formation of coastal area is influenced by sedimentation process. The sedimentation process along the coastal line in the past one can be explained by studying existence of paleochannels located around the area. Deposition of the sediment along the coast is carried by river activities in the past. We have investigated paleochannel structure in Ulee Kareng, Banda Aceh using electrical resistivity tomography survey. The measurements were performed along two profiles with 240 meters and 2 meters spacing between electrodes crossing the paddy. The method measured apparent resistivity data along the profiles. The 2D resistivity models were inverted from the apparent resistivity data using Res2Div program. The inverted models clearly show indication of paleochannel structure based on distribution of resistivity values within the subsurface. The paleochannel area was characterize by high resistivity i.e. 15.2–31.6 Ω.m.
Heat Energy of Candlenut Shell and Tamarind Skin Briquet with Variation on Particle Size and Pressure Pressing Cut Dewi Afriani; Evi Yufita; Nurmalita Nurmalita
Journal of Aceh Physics Society Volume 6 Number 1, March 2017
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (166.2 KB)

Abstract

Pemanfaatan limbah dari hasil perkebunan dapat digunakankan untuk pembuatan briket bioarang yang energinya dapat diperoleh sebagi energi alternatif. Pada penelitian ini dilakukan pembuatan briket bioarang campuran antara limbah tempurung kemiri dan kulit asam jawa dengan memvariasikan tekanan pengepresan (4 ton, 5 ton, 6 ton) dan ukuran partikel dari cangkang kemiri (20 mesh, 40 mesh, 60 mesh) untuk mengetahui kualitas briket yang dihasilkan. Hasil penelitian menunjukkan bawa nilai kalor briket bioarang tertinggi berada pada tekanan pengepresan 6 ton dengan ukuran butir 60 mesh sebesar 3350 kal dengan porositas sebesar 5,58 % dan kadar air sebesar 7,6 %. Farm waste utilization can be done by making a briquet as an alternative energy. In this research mixture of waste candlenut shell and tamarind skin as a briquet is studied by varying the pressure pressing (4 tons, 5 tons, 6 tons) and grain size of the candlenut shell (20 mesh, 40 mesh, 60 mesh) to determine the quality of briquettes resulting from. The results show that the highest heat energy of briquet currently on the pressing pressure of 6 tons with a grain size of 60 mesh at 3350 cal with a porosity of 5.58% and a water content of 7.6%. Keywords: briket bioarang, tempurung kemiri, kulit asam jawa, tekanan pengepresan, ukuran butir
Measurement and Analysis of Human Brain Signals with Case Study of Sound Input Provision Fashbir Fashbir
Journal of Aceh Physics Society Volume 6 Number 1, March 2017
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (968.335 KB)

Abstract

Berbagai aktivitas kimia dan listrik terjadi di dalam tubuh manusia, tak terkecuali di otak. Aktivitas listrik di otak tersebut akan melepaskan muatan listrik secara simultan dan berirama atau terpola sehingga dapat terbangkitkan gelombang listrik, yang hasilnya dapat ditelusuri dan dilihat pada rekaman sinyal otak (electroencephalogram). Perubahan tingkat amplitudo gelombang theta dan alpha saat mendengarkan suara tertentu dapat menjadi indikator tingkat kenyamanan seseorang. Salah satu metoda pembangkitan sinyal alpha adalah mendengarkan suara tertentu. Pada penelitian berstudi kasus pemberian input suara ini, digunakan tiga macam input suara untuk mengetahui pengaruh jenis suara tersebut terhadap amplitudo sinyal otak, terutama sinyal theta dan alpha, dilihat dari daya rata-ratanya. Percobaan dilakukan dengan menggunakan alat Brainmapping yang merupakan pengembangan dari EEG. Selain mengeluarkan sinyal-sinyal EEG, alat ini juga mengeluarkan amplitudo rata-rata gelombang-gelombang otak. Software yang digunakan adalah Sigma PLpro. Data yang diambil adalah berupa amplitudo dari PSD (yang telah dirata-ratakan berdasarkan jenis gelombang EEG) dan peta gelombang otak. Pengolahan data dilakukan secara statistik, yang meliputi uji hipotesis dengan metode Analysis of Variance (ANOVA) dan range test, sehingga dapat dianalisis perbedaannya. Hasil penelitian menunjukkan bahwa daerah pada otak yang dipengaruhi oleh suara adalah daerah temporal otak. Hal lain adalah sinyal delta, alpha, dan beta dapat terpengaruh oleh suara, walau secara statistik pengaruh itu tidak signifikan terhadap hasil pengukuran, sedangkan jenis suara secara signifikan mempengaruhi sinyal theta.  Chemical and electrical activities that take place in human body include the one that occur in brain. The electrical activities in the brain will release electrical charges simultaneously and rhythmically so that electrical waves can be generated, which its representative picture can be browsed on brain signals recording (electroencephalogram). Change of theta and alpha signal amplitudes can indicate the level of someone’s comfort ability. A method to generate alpha signal is by listening to certain sound. In this research with sudy case, three kinds of sound were used in order to know the influence of these sounds on brain signal amplitude, especially for theta and alpha signals, by assessing their average signal power (Power Spectral Density, PSD). The experiments were done by using brainmapping instrument, a development of EEG recorder. Besides drawing out EEG signals, this instrument is also drawing out average amplitude of brain waves. The software used was Sigma PLpro. Data gained were PSD amplitudes (averaged based on kind of EEG wave) and brain wave map. Data processing was done statistically, includes hypothesis test with Analysis of Variance (ANOVA) and range test, so that its difference could be analyzed. The results showed that sound influenced on temporal brain area. Another conclusion was delta, alpha, and beta signals could be influenced by sound, although statistically this influence on yield of measurement was insignificant, while the kind of sound influenced theta signal significantly Keywords: sinyal biolistrik, input suara, electroencephalogram, ANOVA, range test.
Design of Hydrogen Gas Sensor based on Metal Oxide Semiconductor (MOS) Ahmad Arif Hasibuan; Elin Yusibani; Muhammad Syukri Surbakti
Journal of Aceh Physics Society Volume 6 Number 1, March 2017
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (313.134 KB)

Abstract

Sebuah perancangan sensor untuk mendeteksi kebocoran gas hidrogen pada saluran pipa tertutup telah berhasil dilakukan. Sensor yang digunakan berbasis bahan semikonduktor berbahan metal oksida. Sistem yang dirancang adalah dengan membandingkan nilai resistansi awal sensor tanpa gas hidrogen (Ro) dengan resistansi pada saat terdapat gas hidrogen (Rs). Nilai perbandingan tersebut akan dikonversi untuk menentukan kadar konsentrasi gas dalam skala ppm menggunakan persamaan yang diperoleh berdasarkan datasheet sensor yang telah diberikan. Pada saat kebocoran gas betekanan rendah, yakni pada konsentrasi (ppm) rendah, diperoleh waktu respon sensor bernilai 300 s sedangkan pada kondisi gas betekanan tinggi, yakni pada konnsentrasi tinggi, diperoleh nilai kurang dari 150 s. Akurasi pengukuran resistansi didapatkan masih berada dalam jangkauan karakteristik sensor. Design of hydrogen gas sensor to detect hydrogen gas leakage in the pipe has been done. The sensor is based on metal oxide semiconductor. The typical working system of the semiconductor sensor is based on comparison of the resistance in the system, i.e. resistance without hydrogen gas (Ro) and with hydrogen gas (Rs). The gas concentration (ppm) is determined by using an equation derived from the datasheet given. The response time for low concentration is 300 sec and less than 150 sec for high concentration. Furthermore, the measurement accuracy of resistance is still on the range of the characteristics refer to the sensor. Keywords: Gas, Hidrogen, waktu Respon, Sensor, semikonduktor

Page 1 of 1 | Total Record : 5

 1 

Filter by Year

2017 2017


Reset
Filter By Issues
All Issue Volume 12, Number 2, April 2023 Volume 11, Number 2, April 2022 Volume 11, Number 1, January 2022 Volume 10, Number 4, October 2021 Volume 10, Number 3, July 2021 Volume 10, Number 2, April 2021 Volume 10, Number 1, January 2021 Volume 9, Number 3, September 2020 Volume 9, Number 2, May 2020 Volume 9, Number 1, January 2020 Volume 8, Number 3, September 2019 Volume 8, Number 2, May 2019 Volume 8, Number 1, January 2019 Volume 7, Number 3, September 2018 Volume 7, Number 2, May 2018 Volume 7 Number 1, January 2018 Volume 6 Number 2, September 2017 Volume 6 Number 1, March 2017 Volume 5 Number 2, September 2016 Volume 5 Number 1, March 2016 Volume 5 2016 Volume 4 Number 1, March 2015 Volume 4 2015 Volume 3 Number 1, March 2014 Volume 3 2014 Volume 2 Number 1, March 2013 Volume 2 2013 Volume 1 Number 1 March 2012 Template More Issue