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JFA (Jurnal Fisika dan Aplikasinya)
Published by Institut Teknologi Sepuluh Nopember Surabaya
ISSN : 1858036X     EISSN : 24604682     DOI : -
Core Subject : Science,
Physics
JFA (Jurnal Fisika dan Aplikasinya, Abbreviation: J.Fis. dan Apl.) hanya menerbitkan artikel penelitian asli serta mengulas artikel tentang topik seputar bidang fisika (fisika teori, material, optik, instrumentasi, geofisika) dan aplikasinya. Naskah yang dikirimkan ke JFA belum pernah diterbitkan ditempat lain serta tidak dalam proses pertimbangan untuk diterbitkan ditempat lain, dalam bahasa apapun. Studi teoritis, eksperimental, dan praktis sama-sama didorong, seperti juga artikel interdisipliner dan yang timbul dari penelitian dan kolaborasi industri.
Arjuna Subject : -
Articles 604 Documents
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Pengaruh Konsentrasi Ion Aktif Erbium (Er3+) pada Sifat Fisis Medium Gelas Borat-Lithium: Juniastel Rajagukguk, Fitrilawati Juniastel Rajagukguk Juniastel Rajagukguk; Fitrilawati Fitrilawati
Jurnal Fisika dan Aplikasinya Vol 14 No 2 (2018): June 2018 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v14i2.3529

Abstract

Lithium-borate glasses medium doped Erbium (Er3+) active ion have been prepared by melting-quenching technique. The glasses medium followed composition (mol%): (65-x)B2O3 - 5ZnO - 5Li2O - 15 Na2O - 10PbO - xEr2O3 (with x = 0; 0,05; 0,1; 0,5; 1,0; 2,0 dan 4,0 mol%). Sample with powder form are mixed in the crucible alumina and melted at temperature 12000 C by using of electrical furnance. After poured in to stainless stell, glasses sample were annealed with the decreases rate 70 C per minute. Physical properties og glass medium such as density, molar volume and refractive index were inviestigated. From measured results can be known that Er3+ ion doped with lithium borate glass can affect physical properties of glass host medium. Density of glass is increased from 2.96 gr/cm3 (x = 0.1 mol%) to 3.185 gr/cm3 (x = 4 mol%). Refractive index of glass medium also increased with addition Er3+ ion concentration. The maximum refractive index is obtained when Er 3+ ion concentration of 2.0 mol%. Based on research results can be explained that Er3+ doped Lithium-Borat glasses can be used as one of optical gain candidate.
Studi Awal Solar Water DistillerAir Laut Dengan Limbah Botol Plastik Untuk Penyediaan Air Bersih: Endarko, Suasmoro, Triwikantoro, Agus Purwanto, Zaenal Arifin, Mashuri, Yoyok Cahyono, Yanurita Dwi Hapsari, Heru Sukamto, Suminar Pratapa, Herliansyah, Fachrina Maryam, Mira Anjani, dan Niken Rancangkapti Endarko Endarko; Suasmoro Suasmoro; Triwikantoro Triwikantoro; Agus Purwanto Agus Purwanto; Zaenal Arifin Zaenal Arifin; Mashuri Mashuri; Yoyok Cahyono Yoyok Cahyono; Yanurita Dwihapsari Yanurita Dwihapsari; Heru Sukamto Heru Sukamto; Suminar Pratapa Suminar Pratapa; Herliansyah Herliansyah; Fachrina Maryam Fachrina Maryam; Mira Anjani Mira Anjani; Niken Rancangkapti Niken Rancangkapti
Jurnal Fisika dan Aplikasinya Vol 14 No 2 (2018): June 2018 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v14i2.3572

Abstract

It has been successfully investigated the utilization of waste plastic bottles as a solar water distiller for the provision of clean water. In this study 600 and 1500 mL plastic bottles used for solar water distiller with 9 variations. A 600 mL bottle with a variation of the addition of soda cans painted black or not (3 variations) as type A. Hereinafter, 600 mL plastic bottle connected with 1500 mL plastic bottle positioned above 600 mL bottle contained small plastic bottle placed in bottle 1500 mL with variations of either painted black or not (3 variations) is called type B. Moreover, the next three variations are 1500 mL bottles cut in half to resemble open containers with smaller plastic bottles placed inside whether painted black or not (Type C). Furthermore, as a comparison of plastic containers (basin) with a diameter of 25 cm used for the solar distiller. The study was conducted with 30 mL of seawater as the initial data, after 8 hours exposed to the sunlight. The results showed that plastic containers had better efficiency compared to all types of the plastic bottle as solar distiller with the value up to (55.7 ± 3.1)%, while for the distillation system with plastic bottles, the highest efficiency was obtained type distillation system A with a range of 11-13%. While for type B and C respectively equal to 1-4%.
Pemanfaatan SATAID Untuk Analisa Atmosfer di Wilayah Perairan: Budi Prasetyo dan Nikita Pusparini Budi Prasetyo Budi Prasetyo; Nikita Pusparini Nikita Pusparini
Jurnal Fisika dan Aplikasinya Vol 14 No 2 (2018): June 2018 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v14i2.3220

Abstract

Marine activity is affected by weather condition and state of sea. Weather analysis satellite is very important for monitoring atmospheric dynamics in global, regional, and local scale because it has a high spatial and temporal resolution. One of application which can be used for analysis satellite imagery is SATAID (Satellite Animation and Interactive Diagnosis). This paper studied about utilization of of SATAID data for analyzing atmosphere condition in case study of KM Sakinah sinking boat on May 16th 2012 at16.00 UTC. We used SATAID, precipitation estimation data from Tropical Rainfall Measuring Mission (TRMM) satelite, weather condition from Belawan Marine Station synoptic observation, wind and wave height data on May 16th 2012. The results showed that SATAID was very useful for analyzing atmosphere condition in waters area. Top cloud temperature around the incident location reached -780 C during incident, so we estimated that Cumulonimbus (Cb) cloud existed. The potential vorticity and showalter stability index showed that atmosphere condition around incident location was labil, so it had more chance to be raining heavily accompanied by thunderstorm (TS) and strong wind. The observed rain cloud had already covered around the incident location since 15.00 UTC and then reached the mature phase at 16.00 UTC. Satellite TRMM data and obsevation data from Belawan Coast showed that weather condition during incident (16.00 UTC) was moderate rain with TS.
Evaluasi Parameter Akustik Objektif Gereja X di Surabaya: Gontjang Prajitno, Regina Ratu, Susilo Indrawati, dan Suyatno Gontjang Prajitno Gontjang Prajitno; Regina Ratu Regina Ratu; Susilo Indrawati Susilo Indrawati; Suyatno Suyatno
Jurnal Fisika dan Aplikasinya Vol 14 No 2 (2018): June 2018 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v14i2.3687

Abstract

The church is one of the buildings that has a solemn image and wisdom, so the difference from the sound pressure, the loudness of the sound and the sound journey that will determine the quality and quantity of the resulting sound impact the comfort of each congregation and the purpose of each event.In an effort to meet the standards of a church worship space, this research is aimed at knowing the distribution of parameter values residing in the congregation. The parameters evaluated include the spreading of the sound pressure level, the dispersion of the humming time, the distribution of the sound clarity of D50 (definition) and the C80 (clarity) of the musical sound. In this research, the testing was done in the X church worship room in Surabaya. From the measurement and analysis it is found that the value of noise criteria in the X church worship room is NC 40 s.d NC 45. This value is still above the recommended noise level for the function of the church worship room. The humming time parameter ranges from 0.42 to 0.568 seconds.The C80 value ranges from 2.94 dB to 12.38 dB. So overall the value of the humming time has not met the standard and for the value of C80 still not meet the standard. Meanwhile, for the value of D50 which states the clarity of vowel sounds worth between 36.82% to 86.96% has met the standard at some point, for space with speech function.
Aplikasi Geolistrik Resistivitas Konfigurasi Wenner-Schlumberger untuk Pemetaan Sebaran Leachate di Sekitar TPA Putri Cempo Surakarta: Chiranjeevi Nugroho, Darsono, Ari Handono Ramelan Chiranjeevi Nugroho Chiranjeevi Nugroho; Darsono Darsono; Ari Handono Ramelan Ari Handono Ramelan
Jurnal Fisika dan Aplikasinya Vol 14 No 1 (2018): January 2018 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v14i1.2864

Abstract

Mapping leachates distribution using geoelectrical resistivity has been done at Plesungan village, Gondang Rejo, Karanganyar regency. Acquisition using Wenner-Schlumberger configuration with space of the smallest electrode is 15 meters away. This research uses resistivitymeter OYOMcOHM-EL for current injection and measure the potential difference. Inversion process uses Res2dInv software for 2 dimensions model and RockWorks16 software for 3 dimensions model. The location of the research has geology old alluvium with characteristics conglomerate, sandstone, silt and clay. Leachate mapping estimates resistivity value of <5.55 Om with the direction away from the final disposal site where the main constituent of reseach sites is clay.
Identifikasi Air Tanah Daerah Agrotechno Park Cangar Batu Jawa Timur Berdasarkan Metode Geolistrik Resistivitas: Siti Ainur Rohmah, Sukir Maryanto, Adi Susilo Siti Ainur Rohmah Siti Ainur Rohmah; Sukir Maryanto Sukir Maryanto; Adi Susilo Adi Susilo
Jurnal Fisika dan Aplikasinya Vol 14 No 1 (2018): January 2018 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v14i1.3106

Abstract

The study of groundwater has been done at Agrotecnopark Cangar using resistivity method. Data acquisition were performed by using dipole-dipole mapping configuration along 11 lines in 2 regions. Inversion method is carried out on the acquisition data using Res2dinv software. The result of inversion is distributed resistivity value in depth laterally sections. They represents subsurface structure from each line in 2D and 3D form. Based on result known in the research area dominated by high resistivity. The region 1 (AL 01 - 05) has low resisistivity in ranged 100-500 Ohm.m. which their depth arround 5 meters below ground surface. The resistivity range is suspected as the water-content layer so the layer has a low groundwater potential for region 1. While in region 2 (AL06 - AL11) has resistivity dominated by high resistivity >1000 Ohm.m. The value indicates in region 2 has no potential for groundwater.
Pengaruh Ketebalan Lapisan TiO2 terhadap Performasi Dye Sensitized Solar Cells: Nurrisma Puspitasari, Nurul Amalia Silviyanti, Gatut Yudoyono, Gontjang Prajitno, Agus Rubiyanto, Endarko Nurrisma Puspitasari Nurrisma Puspitasari; Nurul Amalia Silviyanti Nurul Amalia Silviyanti; Gatut Yudoyono Gatut Yudoyono; Gontjang Prajitno Gontjang Prajitno; Agus Rubiyanto Agus Rubiyanto; Endarko Endarko
Jurnal Fisika dan Aplikasinya Vol 14 No 1 (2018): January 2018 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v14i1.3553

Abstract

Dye Sensitized Solar Cell (DSSC) is the third generation of solar cells. DSSC is formed by sandwich structure, there are five parts: ITO glass (Indium Tin Oxide) as substrate; TiO2 as semiconductor material; dye (chlorophyll-turmeric-mangosteen) as an electron donor; gel electrolyte as electron transfer and active carbon as a catalyst in the counter electrode. The synthesis of nanometer-sized TiO2 powder is obtained by coprecipitation method. From the research that has been done, the efficiency of DSSC with 10 µm TiO2 layer thickness bigger than 20 µm and 30 µm layer thickness. The DSSC efficiency result is 0.25% for 10 µm TiO2 layer thickness , 0.143% for 20 µm TiO2 layer thickness, and 0.195% for 30 µm TiO2 layer thickness.
Kajian pH Klorofil Terhadap Ikatan Kimia Dye pada TiO2 Sebagai Aplikasi Dye-Sensitized Solar Cell (DSSC): Aziza Hfii Ahliha, Fahru Nurosyid, Agus Supriyanto Aziza Hfii Ahliha Aziza Hfii Ahliha; Fahru Nurosyid Fahru Nurosyid; Agus Supriyanto Agus Supriyanto
Jurnal Fisika dan Aplikasinya Vol 14 No 1 (2018): January 2018 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v14i1.3163

Abstract

This study was conducted to examine the effect of pH on chemical bonding of chlorophyll dye on TiO2 for application of DSSC. Variations of pH used in this study without the addition of buffers, acids, neutrals, and bases. The absorbance of chlorophyll dye and TiO2 were characterized using UV-Vis spectrophotometer. The chemical bonds contained in TiO2-chlorophyll dye were characterized FTIR spectrophotometer. The efficiency of DSSC was calculated using I-V meter. The characterization results showed that pH of acids has the highest absorbance in the wavelength range 400-480 nm and 600-680 nm. The highest conversion efficiency of 0.013% with the transmittance of 89.3% at the wave number 3417 cm-1 .
Pengaruh Konsentrasi Doping terhadap Intensitas Emisi Material Luminisensi ZnO:Zn: Diky Anggoro, Rizki Yuniasari, Hasto Sunarno, F Faridawati Diky Anggoro Diky Anggoro; Rizki Yuniasari Rizki Yuniasari; Hasto Sunarno Hasto Sunarno; Faridawati Faridawati
Jurnal Fisika dan Aplikasinya Vol 14 No 1 (2018): January 2018 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v14i1.3554

Abstract

The luminance of Zinc Oxide materials has been synthesized using the phase solution method. The calcination process is carried out at a temperature of 8000 C. Performed phase identification, optical characterization, and luminance intensity generated by ZnO synthesis results. Addition of doping was done by using doping concentration of 1%, 3%, and 5% with a calcination temperature of 3000 C to obtain ZnO: Zn. We do phase identification and optical characterization of the three samples produced. The intensity of luminescence was tested to determine the effect of adding doping concentrations to the emissions produced by luminance materials ZnO: Zn. Obtained luminance material results emit green emissions with 510 nm to 535 nm wavelength range. The higher the doping concentration will be the more activators (doping) in the host (ZnO) that absorbs the energy for the excitation process so that the higher emission intensity emitted.
Penentuan Nilai Frekuensi Natural Bangunan UPT Perpustakaan UNS dengan Sensor Accelerometer pada Handphone Android: Rio Riantana, Darsono, Agus Triyono Rio Riantana Rio Riantana; Darsono Darsono; Agus Triyono Agus Triyono
Jurnal Fisika dan Aplikasinya Vol 13 No 3 (2017): October 2017 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v13i3.2838

Abstract

Determination the value of buildings natural frequency of UPT perpustakaan UNS with Accelerometer sensor on an android phone has been done. The main sensor for recording micro tremor activity is Accelerometer sensor on the android phone. Microtremor activity recording is done on every building’s floor of UPT Perpustakaan UNS and on the surface of land outside the building. From micro tremor activity recording, the recorded data is sent to the server by telemetry method. The data were stored on the server then displayed in the graph on the micro tremor web monitoring. Microtremor data is processed with the FFT function to determine the dominant frequency. From the dominant frequency, we find the ratio of resonance of soil and building of UPT Perpustakaan UNS. From the calculation, the value of resonance ratio is 69.35 - 94.48% in the NS component and 70.42-98.61% in the EW component with low resonance status on each floor of the building.

Page 58 of 61 | Total Record : 604

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