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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) Spektra: Jurnal Fisika dan Aplikasinya Journal of Physics and Its Applications International Journal of Remote Sensing and Earth Sciences (IJReSES) PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Metalurgi Journal of Engineering and Technological Sciences
Triyono, Djoko
Department Of Physics, Faculty Mathematics And Natural Sciences, Universitas Indonesia.
Aerospace Engineering Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Physics Other

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Roof materials identification based on pleiades spectral responses using supervised classification Ayom Widipaminto; Yohanes Fridolin Hestrio; Yuvita Dian Safitri; Donna Monica; Dedi Irawadi; Rokhmatuloh Rokhmatuloh; Djoko Triyono; Erna Sri Adiningsih
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 19, No 2: April 2021
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v19i2.18155

Abstract

The current urban environment is very dynamic and always changes both physically and socio-economically very quickly. Monitoring urban areas is one of the most relevant issues related to evaluating human impacts on environmental change. Nowadays remote sensing technology is increasingly being used in a variety of applications including mapping and modeling of urban areas. The purpose of this paper is to classify the Pleiades data for the identification of roof materials. This classification is based on data from satellite image spectroscopy results with very high resolution. Spectroscopy is a technique for obtaining spectrum or wavelengths at each position from various spatial data so that images can be recognized based on their respective spectral wavelengths. The outcome of this study is that high-resolution remote sensing data can be used to identify roof material and can map further in the context of monitoring urban areas. The overall value of accuracy and Kappa Coefficient on the method that we use is equal to 92.92% and 0.9069.
DETECTING DEFORMATION DUE TO THE 2018 MERAPI VOLCANO ERUPTION USING INTERFEROMETRIC SYNTHETIC APERTURE RADAR (INSAR) FROM SENTINEL-1 TOPS Suwarsono Suwarsono; Indah Prasasti; Jalu Tejo Nugroho; Jansen Sitorus; Rahmat Arief; Khalifah Insan Nur Rahmi; Djoko Triyono
International Journal of Remote Sensing and Earth Sciences (IJReSES) Vol 16, No 1 (2019)
Publisher : National Institute of Aeronautics and Space of Indonesia (LAPAN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1436.684 KB) | DOI: 10.30536/j.ijreses.2019.v16.a3145

Abstract

This paper describes the application of Sentinel-1 TOPS (Terrain Observation with Progressive Scans), the latest generation of SAR satellite imagery, to detect displacement of the Merapi volcano due to the May–June 2018 eruption. Deformation was detected by measuring the vertical displacement of the surface topography around the eruption centre. The Interferometric Synthetic Aperture Radar (InSAR) technique was used to measure the vertical displacement. Furthermore, several Landsat-8 Thermal Infra Red Sensor (TIRS) imageries were used to confirm that the displacement was generated by the volcanic eruption. The increasing temperature of the crater was the main parameter derived using the Landsat-8 TIRS, in order to determine the increase in volcanic activity. To understand this phenomenon, we used Landsat-8 TIRS acquisition dates before, during and after the eruption. The results show that the eruption in the May–June 2018 period led to a small negative vertical displacement. This vertical displacement occurred in the peak of volcano range from -0.260 to -0.063 m. The crater, centre of eruption and upper slope of the volcano experienced negative vertical displacement. The results of the analysis from Landsat-8 TIRS in the form of an increase in temperature during the 2018 eruption confirmed that the displacement detected by Sentinel-1 TOPS SAR was due to the impact of volcanic activity. Based on the results of this analysis, it can be seen that the integration of SAR and thermal optical data can be very useful in understanding whether deformation is certain to have been caused by volcanic activity.
DETECTING THE LAVA FLOW DEPOSITS FROM 2018 ANAK KRAKATAU ERUPTION USING DATA FUSION LANDSAT-8 OPTIC AND SENTINEL-1 SAR NFn Suwarsono; Indah Prasasti; Jalu Tejo Nugroho; Jansen Sitorus; Djoko Triyono
International Journal of Remote Sensing and Earth Sciences (IJReSES) Vol 15, No 2 (2018)
Publisher : National Institute of Aeronautics and Space of Indonesia (LAPAN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (817.489 KB) | DOI: 10.30536/j.ijreses.2018.v15.a3078

Abstract

The increasing volcanic activity of Anak Krakatau volcano has raised concerns about a major disaster in the area around the Sunda Strait. The objective of the research is to fuse Landsat-8 OLI (Operational Land Imager) and Sentinel-1 TOPS (Terrain Observation with Progressive Scans), an integration of SAR and optic remote sensing data, in observing the lava flow deposits resulted from Anak Krakatau eruption during the middle 2018 eruption. RGBI and the Brovey transformation were conducted to merge (fuse) the optical and SAR data.  The results showed that optical and SAR data fusion sharpened the appearance of volcano morphology and lava flow deposits. The regions are often constrained by cloud cover and volcanic ash, which occurs at the time of the volcanic eruption.  The RGBI-VV and Brovey RGB-VV methods provide better display quality results in revealing the morphology of volcanic cone and lava deposits. The entire slopes of Anak Krakatau Volcano, with a radius of about 1 km from the crater is an area prone to incandescent lava and pyroclastic falls. The direction of the lava flow has the potential to spread in all directions. The fusion method of optical Landsat-8 and Sentinel-1 SAR data can be used continuously in monitoring the activity of Anak Krakatau volcano and other volcanoes in Indonesia both in cloudy and clear weather conditions.
Effect of Yield Silver Nanoparticles in Enhancing Raman Signal of SERS Substrate Fabricated on Whatman Filter Paper Affi Nur Hidayah; Yuliati Herbani; Djoko Triyono; Rosari Saleh
Journal of Physics and Its Applications Vol 4, No 2 (2022): May 2022
Publisher : Diponegoro University Semarang Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpa.v4i2.13226

Abstract

On Whatman Filter Paper, Surface Enhanced Raman Scattering (SERS) Substrate was created from colloidal silver nanoparticles by drop casting in varied volume colloidal nanoparticles of 3 ml and 6 ml. Using Raman Spectroscopy, SERS substrates were investigated for their ability to enhance 500 ppm of Deltamethrin pesticides Raman Signal. The number of colloidal nanoparticles is related to the volume of colloidal nanoparticles, indicating that high yields nanoparticle synthesis. The results demonstrate that fabricating SERS substrates in 6 ml increased Raman signal more than fabricating nanoparticles in 3 ml.
SPATIO-TEMPORAL ANOMALIES IN SURFACE BRIGHTNESS TEMPERATURE PRECEDING VOLCANO ERUPTIONS DETECTED BY THE LANDSAT-8 THERMAL INFRARED SENSOR (CASE STUDY: KARANGETANG VOLCANO) Suwarsono, Suwarsono; Triyono, Djoko; Khomarudin, Muhammad Rokhis; Rokhmatuloh, Rokhmatuloh
International Journal of Remote Sensing and Earth Sciences (IJReSES) Vol 18, No 1 (2021)
Publisher : National Institute of Aeronautics and Space of Indonesia (LAPAN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30536/j.ijreses.2021.v18.a3465

Abstract

Indonesia's geological as part of the “ring of fire” includes the consequence that community life could be affected by volcanic activity. The catastrophic incidence of volcanic eruptions in the last ten years has had a disastrous impact on human life. To overcome this problem, it is necessary to conduct research on the strengthening of the early warning system for volcanic eruptions utilising remote sensing technology.  This study analyses spatial and temporal anomalies of surface brightness temperature in the peak area of Karangetang volcano during the 2018-2019 eruption. Karangetang volcano is an active volcano located in North Sulawesi, with a magmatic eruption type that releases lava flow. We analyse the anomalies in the brightness temperature from channel-10 of the Landsat-8 TIRS (Thermal Infrared Scanner) time series during the period in question. The results of the research demonstrate that in the case of Karangetang Volcano the eruptions of 2018-2019 indicate increases in the surface brightness temperature of the crater region. As this volcano has many craters, the method is also very useful to establish in which crater the center of the eruption occurred.
SYNTHESIS AND CHARACTERIZATION ANALYSIS OF FE3O4/SiO2 CORE SHELL Cassia, Diva; Sugihartono, Iwan; Isnaeni, Isnaeni; Soewoto, Haswi Purwandanu; Alaih, Akhmad Futukhillah Fataba; Triyono, Djoko; Mohar, Rahmat Setiawan; Tiam, Tan Swee
Spektra: Jurnal Fisika dan Aplikasinya Vol. 8 No. 3 (2023): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 8 Issue 3, December 2023
Publisher : Program Studi Fisika Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/SPEKTRA.083.04

Abstract

Fe3O4/SiO2 core shell synthesis has been carried out, and its characteristics has been analyzed to be used as a photocatalyst using co-precipitation and sol-gel method. Fe3O4 is used as the core material to eliminate the difficulty of separating the photocatalyst powder from the solution medium, SiO2 is used to avoid oxidation by preventing the Fe3O4 core from coming into direct contact with the solution. The samples were then characterized using X-Ray Diffraction (XRD), Fourier Transform Infra-Red (FTIR), and Vibrating Sample Magnetometer (VSM). The XRD and FTIR results showed that the crystal structure and movement of the sample molecules matched the standard characteristics from previous studies. The VSM characterization results show that SiO2 succeeded in reducing the value of the magnetization of Fe3O4, which proves that Fe3O4 has been successfully coated by SiO2.
SINTESIS DAN ANALISIS STRUKTUR KRISTAL NANOPARTIKEL ZNO MENGGUNAKAN METODE PRESIPITASI DENGAN PH-7 Amaliya, Septiana Tri; Sugihartono, Iwan; Alaih, Akhmad Futukhillah Fataba; Triyono, Djoko
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 12 (2024): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2023
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1201.FA25

Abstract

Abstrak Nanopartikel Zink Oxide (ZnO) telah disintesis menggunakan teknik presipitasi dengan pH-7 dan dilanjutkan memberi perlakuan annealing pada suhu 400°C selama 4 jam. Berdasarkan Inorganic Crystal Structure Database (ICSD) nomor #98-018-0052, hasil pola difraksi yang diukur menggunakan teknik difraksi sinar-x mengkonfirmasi bahwa sampel yang terbentuk merupakan nanopartikel ZnO dengan struktur polikristal hexagonal wurtzite. Perhitungan lebih lanjut dari hasil perhitungan dan analisis pola difraksi diperoleh informasi bahwa parameter kisi a = 3.25 Å dan c = 5.21 Å dengan volume unit sel 47.62 Å3. Sedangkan ukuran kristalit pada bidang (100), (002), (101), (102), (110), (103), (200), (112), (201), (004), (202), (104), (203) berturut-turut adalah 38.67 nm, 38.09 nm, 39.13 nm, 35.23 nm, 31.79 nm, 30.55 nm, 29.50 nm, 29.63 nm, 29.97 nm, 28.74 nm, 27.79 nm, 27.24 nm, 25.59 nm. Rata-rata ukuran kristalit dari sampel nanopartikel ZnO ini adalah 31.69 nm. Kata-kata kunci: ZnO, nanopartikel, presipitasi, polikristalin. Abstract ZnO nanoparticles were synthesized using a precipitation technique with a pH of 7 and then annealed at 400°C for 4 hours. Based on the Inorganic Crystal Structure Database (ICSD) number # 98-018-0052, the results of the diffraction pattern measured using the x-ray diffraction technique confirmed that the sample formed was a ZnO nanoparticle with a polycrystalline hexagonal wurtzite structure. Furthermore, the crystal parameter was calculated from the diffraction patterns provided that the lattice parameters a = 3.25 Å and c = 5.21 Å with a unit cell volume of 47.62 Å3. Meanwhile, the crystallites size of (100), (002), (101), (102), (110), (103), (200), (112), (201), (004), (202), ( 104), (203) is 38.67 nm, 38.09 nm, 39.13 nm, 35.23 nm, 31.79 nm, 30.55 nm, 29.50 nm, 29.63 nm, 29.97 nm, 28.74 nm, 27.79 nm, 27.24 nm, 25.59 nm, respectively. It means the average crystallite size of the ZnO nanoparticle is 31.69 nm. Keywords: ZnO, nanoparticles, precipitation, polycrystal.
ANALISIS STRUKTUR KRISTAL DAN ABSORBANSI LAPISAN TIPIS ZNO BERSTRUKTUR NANO DI ATAS SUBSTRAT KACA BERPELAPIS INDIUM TIN OXIDE Aliyah, Nada Alfi; Sugihartono, Iwan; Mohar, Rahmat Setiawan; Tiam, Tan Swee; Alaih, Akhmad Futukhillah Fataba; Triyono, Djoko
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 12 (2024): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2023
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1201.FA26

Abstract

Abstrak Pada penelitian ini telah dilakukan deposisi lapisan tipis ZnO berstruktur nano dengan menggunakan teknik Ultrasonic Spray Pyrolysis (USP) di atas substrat kaca Indium Tin Oxide (ITO) selama 15 menit pada suhu 450℃. Zinc Acetate Dyhydrate [Zn(CH3COO)2] digunakan sebagai prekursor Zn dengan variasi konsentrasi prekursor 0.1M dan 0.4M. Lapisan tipis ZnO telah dikarakterisasi menggunakan X-Ray Diffractometer (XRD), Uv-Vis Spectrofotometer, dan Scanning Electron Microscope (SEM) untuk menganalisis struktur kristal, absorbansi, dan struktur morfologi. Berdasarkan Inorganic Crystal Structure Database (ICSD) nomor #98-003-1060 dan #98-005-7478, pola X-Ray Diffraction (XRD) dari lapisan tipis ZnO memiliki struktur polikristal hexagonal wurtzite dengan space group P63mc. Uji Uv-Vis untuk sampel dengan konsentrasi 0.4M menunjukkan adanya peningkatan intensitas absorbansi paling dominan pada ~320 nm. Sehingga dapat diprediksikan sampel memiliki besar celah energi sebesar 3.2 eV. Kata-kata kunci: lapisan tipis ZnO, ultrasonic spray pyrolysis, struktur kristal, absorbansi, celah energi. Abstract In this study, we have deposited nanostructured ZnO thin films using the Ultrasonic Spray Pyrolysis (USP) method on an Indium Tin Oxide (ITO) glass substrate for 15 minutes at 450℃. Zinc Acetate Dyhydrate [Zn(CH3COO)2] was used as a Zn precursor with various precursor concentrations of 0.1M and 0.4M. The ZnO thin film has been characterized using an X-Ray Diffractometer (XRD), Uv-Vis Spectrophotometer, and Scanning Electron Microscope (SEM) to obtain a crystal structure, absorbance, and morphology structure. Based on the Inorganic Crystal Structure Database (ICSD) number #98-003-1060 and #98-005-7478, the X-Ray Diffraction (XRD) pattern of ZnO thin film has a polycrystalline hexagonal wurtzite structure with space group P63mc. Uv-Vis characterization for samples with a concentration of 0.4M showed that there was an increase in absorbance intensity that was most dominant at ~320 nm. Hence, it can be predicted that the sample has an energy gap of 3.2 eV. Keywords: ZnO thin film, ultrasonic spray pyrolysis, crystal structure, absorbance, bandgap.
STUDI AWAL BIOSINTESIS NANOPARTIKEL ZNO MENGGUNAKAN EKSTRAK DAUN MORINGA OLEIFERA DENGAN TEKNIK PRESIPITASI Azzahra, Ridha Octa Alhuriyyah; Sugihartono, Iwan; Yudasari, Nurfina; Alaih, Akhmad Futukhillah Fataba; Triyono, Djoko
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 12 (2024): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2023
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1201.FA27

Abstract

Abstrak Biosintesis nanopartikel ZnO telah dilakukan menggunakan teknik presipitasi dengan melarutkan 2 gram seng nitrat tetrahidrat [Zn(NO3)2.4H2O] ke dalam 20 ml ekstrak daun kelor (Moringa oleifera) pada pH 9 dan suhu 60ºC selama 20 menit. Serbuk nanopartikel ZnO diperoleh setelah endapan dikalsinasi pada suhu 400ºC selama 2 jam. Pola difraksi dari hasil karakterisasi menggunakan teknik difraksi sinar-x dan pencocokan dengan standar Inorganic Crystal Structure Database (ICSD) nomor #98-018-0050 mengkonfirmasi bahwa struktur kristal dari nanopartikel ZnO adalah polikristal heksagonal wurtzite dengan space group P63mc. Selanjutnya, hasil analisis pola difraksi memberikan parameter struktur kristal berupa parameter kisi a = 3.253 Å, c = 5.210 Å, serta rata-rata Full Width at Half Maximum (FWHM) sebesar 0.6494°. Mengacu pada nilai FWHM, ukuran kristalit pada bidang (100), (002), (101), (102), (110), (103), (112), (201), dan (202) berturut-turut adalah 41.32, 41.6, 49.47, 16.34, 13.88, 8.98, 8.72, 11.7, dan 10.71 nm yang menghasilkan rata-rata ukuran kristalit sebesar 22.524 nm. Kata-kata kunci: biosintesis, nanopartikel ZnO, moringa oleifera, struktur kristal, ukuran kristalit. Abstract Biosynthesis of ZnO nanoparticles was carried out using the precipitation technique by dissolving 2 gram of Zinc Nitrate Tetrahydrate [Zn(NO3)2.4H2O] in 20 ml of Moringa oleifera leaf extract at pH 9 and temperature 60°C for 20 minutes. ZnO nanoparticles powder was obtained after the precipitate was calcined at 400°C for 2 hours. The diffraction pattern from the results of the characterization using the X-Ray Diffraction (XRD) technique and matching with the Inorganic Crystal Structure Database (ICSD) standard number #98-018-0050 confirmed that the crystal structure of the ZnO nanoparticles is hexagonal wurtzite polycrystalline with a P63mc space group. Furthermore, the results of the diffraction pattern analysis provide crystal structure parameters in the form of lattice parameters a = 3.253 Å, c = 5.210 Å, and average Full Width at Half Maximum (FWHM) of 0.6494°. According to the FWHM value, the crystallite sizes in fields (100), (002), (101), (102), (110), (103), (112), (201), and (202) respectively are 41.32, 41.6, 49.47, 16.34, 13.88, 8.98, 8.72, 11.7, and 10.71 nm which resulted in an average crystallite size of 22.524 nm. Keywords: biosynthesis, ZnO nanoparticles, moringa oleifera, crystal structure, crystallite sizes.
SINTESIS DAN ANALISIS STRUKTUR KRISTAL NANOPARTIKEL ZNO MENGGUNAKAN METODE PRESIPITASI PH-12 Tiawati, Nia; Sugihartono, Iwan; Alaih, Akhmad Futukhillah Fataba; Triyono, Djoko
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol. 12 (2024): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2023
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1201.FA28

Abstract

Abstrak Nanopartikel ZnO telah disintesis melalui metode presipitasi dengan pH-12 dan larutan prekursor dipanaskan pada suhu 60℃ selama proses pengadukan. Selanjutnya sampel yang diperoleh, diberi perlakuan annealing selama 4 jam dengan suhu 400℃. Karakterisasi menggunakan teknik Difraksi Sinar-X (XRD) pada sampel telah dilakukan untuk mengetahui fase yang terbentuk dan struktur kristal. Berdasarkan Inorganic Crystal Structure Database (ICSD) nomor 98-018-0050, pola Difraksi Sinar-X (XRD) dari nanopartikel ZnO memiliki struktur wurtzit heksagonal polikristalin dengan space group P63mc. Ukuran kristalit pada bidang (100), (002), (101), (102), (110), (103), (200), (112), (201) berturut-turut adalah 33.04 nm, 32.73 nm, 34.41 nm, 30.46 nm, 26.89 nm, 26.06 nm, 25.01 nm, 25.46 nm, 25.70 nm. Rata-rata ukuran kristalit dari sampel nanopartikel ZnO ini adalah 28.86 nm. Sementara itu, parameter kisi a = b = 3.25 Å dan c = 5.21 Å dengan volume unit sel sebesar 47.61 Å3. Kata-kata kunci: nanopartikel ZnO, presipitasi, XRD, pH, ukuran kristalit. Abstract ZnO nanoparticles were synthesized by precipitation method with a pH of 12 and the precursor solution was heated at 60℃ during the stirring process. Furthermore, the samples obtained were annealed for 4 hours at 400℃. Characterization using X-Ray Diffraction (XRD) technique on the sample has been carried out to determine the phase formed and the crystal structure. Based on the Inorganic Crystal Structure Database (ICSD) number 98-018-0050, the X-Ray Diffraction (XRD) pattern of ZnO nanoparticles has a polycrystalline hexagonal wurtzite structure with the space group P63mc. The crystallite size in (100), (002), (101), (102), (110), (103), (200), (112), (201) plane are 33.04 nm, 32.73 nm, 34.41 nm, 30.46 nm, 26.89 nm, 26.06 nm, 25.01 nm, 25.46 nm, 25.70 nm, respectively. The average crystallite size of the ZnO nanoparticle samples was 28.86 nm. Meanwhile, lattice parameters a = b = 3.25 Å and c = 5.21 Å with a unit cell volume of 47.61 Å3. Keywords: ZnO nanoparticles, precipitation, XRD, pH, crystallite size
Co-Authors Affi Nur Hidayah Alaih, Akhmad Futukhillah Fataba Aliyah, Nada Alfi Amaliya, Septiana Tri Ayom Widipaminto Azzahra, Ridha Octa Alhuriyyah Cassia, Diva Dedi Irawadi Donna Monica Eni Sugiarti Erna Sri Adiningsih Indah Prasasti Indah Prasasti Isnaeni Isnaeni Iwan Sugihartono Jalu Tejo Nugroho Jalu Tejo Nugroho Jansen Sitorus Jansen Sitorus Khalifah Insan Nur Rahmi Khomarudin, Muhammad Rokhis Mayora, Diva Cassia Mohar, Rahmat Setiawan NFn Suwarsono Rafsanjani, Rifqi Almusawi Rahmat Arief Ramandhany, Safitry Resetiana Dwi Desiati, Resetiana Dwi Rokhmatuloh Rokhmatuloh Rokhmatuloh, Rokhmatuloh Rosari Saleh Shiddiq, Muhandis Soewoto, Haswi Purwandanu Sundawa, Risma Yulita Suwarsono Suwarsono Suwarsono Suwarsono Tiam, Tan Swee Tiawati, Nia Yohanes Fridolin Hestrio Yudasari, Nurfina Yuliati Herbani Yuvita Dian Safitri