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All Journal International Journal of Advances in Applied Sciences MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management ASEAN Journal of Systems Engineering Majalah Forum Teknik UGM Jurnal Penelitian Saintek Inersia : Jurnal Teknik Sipil dan Arsitektur Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan BIOTROPIA - The Southeast Asian Journal of Tropical Biology TAMBANG Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik JURNAL TEKNIK SIPIL ITP ISSN 2354-8452 Majalah Geografi Indonesia Jurnal Ketahanan Nasional Journal of Degraded and Mining Lands Management Jurnal Wilayah dan Lingkungan Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) JPSE (Journal of Physical Science and Engineering) Jurnal Teknologi Mineral dan Batubara Journal of Geoscience, Engineering, Environment, and Technology Journal of the Civil Engineering Forum Jurnal Geomine Indonesian Journal of Chemistry PROMINE Conference SENATIK STT Adisutjipto Yogyakarta Civil and Environmental Science Journal (CIVENSE) Jurnal Otomasi Kontrol dan Instrumentasi Journal of Appropriate Technology for Community Services Respati Community Development Journal: Jurnal Pengabdian Masyarakat Journal of Applied Geology Journal of the Civil Engineering Forum Jurnal Teknik Sipil Institut Teknologi Padang Techno Indonesian Journal of Physics (IJP) International Journal of Disaster Management JAGE BULLET : Jurnal Multidisiplin Ilmu ALTRON Jurnal Teknologi Mineral dan Batubara Jurnal Teknologi Sumberdaya Mineral Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir
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Comparison of Coal Reserve Estimation Methods, Case Study PT. Bukit Asam Area, South Sumatra, Indonesia Taufiq Muhammad Wijayanto; Wahyu Wilopo; I Gde Budi Indrawan; Sunarko Sunarko
Journal of Applied Geology Vol 6, No 1 (2021)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1884.041 KB) | DOI: 10.22146/jag.58366

Abstract

The calculation of coal reserves is influenced by the dimensions or size of the coal deposit. There are several types of coal reserve calculation methods, and the use of these methods is adjusted to existing geological conditions. Each method will produce a different amount of coal reserves, although the location is the same. Besides, the amount of coal mining that can be produced is primarily determined by the mine design, especially the optimal slope as a basis for mining pits in the coal extraction. This research aims to estimate coal reserves based on existing pit designs using a variety of methods. Data on coal thickness and topography are used as the basis for reserves estimation. Coal reserve estimation is conducted in several methods: nearest neighbor point (NNP), inverse distance weighted (IDW), and kriging using Surfer 13 software. The results of the reserves estimation indicate that kriging is the best method by providing the smallest error value with an RMSE value of 0.67 and coal reserves of 27,801,543 tons.
Landslide Susceptibility Mapping and Their Rainfall Thresholds Model in Tinalah Watershed, Kulon Progo District, Yogyakarta Special Region, Indonesia Thema Arrisaldi; Wahyu Wilopo; Teuku Faisal Fathani
Journal of Applied Geology Vol 6, No 2 (2021)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1320.544 KB) | DOI: 10.22146/jag.59185

Abstract

Landslide often occurred in Tinalah watershed, Kulon Progo District, every year. The frequency of landslide events is increasing after high rainfall intensity. Some factors control landslides such as slope gradient, land use, geological structure, slope hydrology, and geological condition. This research has an objective to develop the susceptibility map of Tinalah watershed and to identify the rainfall threshold to trigger a landslide. The development of the susceptibility map using frequency ratio method with four parameters including slope, type of rock, land use, and lineament density. The landslide data were collected during the field survey and from regional disaster management authority (BPBD) Kulon Progo. Rainfall data were collected from BMKG and GSMap. Soil analysis also was conducted to develop a numerical model to verify the rainfall threshold value. The result shows a high susceptibility of the landslide area is dominated in Tinalah watershed. The rainfall threshold for the low susceptibility of the landslide zone is I=490.14 D-1.404with 5-7 days antecedent rain. The rainfall threshold for medium susceptibility map is I=164.32D-0,689 3-7 days antecedent rain. Moreover, the rainfall threshold for the high susceptibility of the landslide zone is 111.62 D-0.779, with 2-7 days antecedent rain.
POTENSI PEMANFAATAN ATAP GEDUNG UNTUK PLTS DI KANTOR DINAS PEKERJAAN UMUM, PERUMAHAN DAN ENERGI SUMBER DAYA MINERAL (PUP-ESDM) PROVINSI DAERAH ISTIMEWA YOGYAKARTA Defi Rizkasari; Wahyu Wilopo; Mohammad Kholid Ridwan
Journal of Appropriate Technology for Community Services Vol. 1 No. 2 (2020)
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jattec.vol1.iss2.art7

Abstract

Electricity consumption in Indonesia from year to year has increased. The sales of PLN 2018 electricity in 234,617.88 GWh covering industrial sector, household sector, commercial sector, and public sector. While electrical energy consumption in D. I. Yogyakarta in 2018 of 2,857.06 GWh covering household sector, industrial sector, business sector, social sector, government office building sector and public street lighting. In fulfilling the demand of electrical energy, Yogyakarta installed power plant consists of PLTMH, PLTBm, PLTS and PLTHybrid with an installed capacity of 4.84 MW so that electricity in Yogyakarta is supplied from the interconnection network of Java-Madura-Bali. Energy resources used by interconnection networks generally use fossil energy (coal). Therefore we need a substitute for future fossil fuels. Utilization of renewable energy is one of the solar energy optimizations that can be applied to urban areas. The building sector consumes up to 40% of total annual energy. One of the buildings that can apply the utilization of renewable energy is the office building PUP-ESDM D. I. Yogyakarta. This research aims to know the potential power generated from the PLTS roofing if it is built on the office building Public Works, housing and Energy Mineral resources (PUP-ESDM) D. I. Yogyakarta. Research is conducted by conducting energy simulations using the HelioScope software. Simulated results show the east side of Building 1, the east side of Building 2, the east side of Building 3, the west side of Building 2 and the north side of Building 2 is the optimal location of photovoltaics. The Total energy potential generated from these five roofs is 73,484.5 kWh/year and is able to supply the energy needs of the PUP-ESDM office by 74.42%.
HUBUNGAN HASIL KORELASI STRATIGRAFI BAWAH PERMUKAAN DENGAN KESTABILAN TEROWONGAN STUDI KASUS: TEROWONGAN MRT JAKARTA Luthfi Effendi; Teuku Faisal Fathani; Wahyu Wilopo
Jurnal Teknik Sipil Institut Teknologi Padang Vol 5 No 1 (2018): Jurnal Teknik Sipil Institut Teknologi Padang
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (798.781 KB) | DOI: 10.21063/jts.2018.V501.024-32

Abstract

Pada perhitungan stabilitas terowongan, mengetahui kondisi bawah permukaan, jenis tanah dan parameternya merupakan hal yang sangat penting. Karena itu, korelasi data bor harus dilakukan sebaik mungkin agar dapat menggambarkan kondisi bawah tanah yang akurat. Penelitian ini akan menguji kestabilan terowongan MRT Jakarta stasiun bawah tanah Senayan-Istora. Berdasarkan hasil korelasi data bor, jenis tanah dibagi menjadi menjadi lima satuan tanah yang terdiri dari lempung N-SPT rendah, lanau N-SPT rendah, lanau N-SPT tinggi, pasir N-SPT rendah, dan pasir N-SPT tinggi. Tekanan muka terowongan divalidasi dengan pembacaan tekanan muka terowongan di lapangan. Secara umum metode yang paling mendekati hasil pembacaan di lapangan adalah metode COB Commisie L510. Stabilitas tubuh terowongan dihitung dengan metode Carranza-Torres, menghasilkan gaya yang paling besar 137,93 kN/m2 dari kapasitas dukung lining terowongan 726 kN/m2 . Stabilitas terowongan terhadap gaya angkat menghasilkan faktor aman paling kecil sebesar 2,26 dari rekomendasi faktor aman 1,5. Hasil korelasi akan berdampak pada stabilitas terowongan, karena stabilitas terowongan didasarkan pada jenis, tebal dan kekuatan tanah di mana terowongan tersebut dibangun.
Performance Panel Surya Saat Gerhana Matahari Cincin Pada Tanggal 26 Desember 2019 Di Kecamatan Larangan Kabupaten Brebes Su Dar mono; Joko Waluyo; Wahyu Wilopo
Techno (Jurnal Fakultas Teknik, Universitas Muhammadiyah Purwokerto) Vol 22, No 2 (2021): Techno Volume 22 No.2 Oktober 2021
Publisher : Universitas Muhammadiyah Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/techno.v22i2.9961

Abstract

The purpose of this research is to know the performance of PV technology by using PV Solartracker on the eclipse Ring on 26 December 2019 by varying the net and dirty PV using themethod of Penyesuian sun position In one year. The study simulates using a solar panel capacity of3 watts and 6 volts with a lithium battery load capacity of 4000 mAh, the direction of the solarpanel is in the south with a tilt angle 230 in December each Stepnya solar tracker This 3- hourchanging angle 450, 900 and 1150 This research began from the hour 07:00 to 15:00 hours. Theaverage power of the solar power plant was received by 1.08 Watts, 4.24 Volt, 0.25 amper and netPV capacity of 2108 mAh, while with an average power of 0.83 watts, 4.36 volts, 0.19 Amper andgross PV capacity of 1524 mAh.
Assessment of groundwater leakage source using hydrochemical data and isotopes in the Pandanduri dam tunnel, Lombok Island, Indonesia Heru Hendrayana; Doni Prakasa Eka Putra; Hendy Setiawan; I Gde Budi Indrawan; Wawan Budianta; Wahyu Wilopo
Journal of Degraded and Mining Lands Management Vol 10, No 1 (2022)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2022.101.3961

Abstract

Leakage or seepage in reservoirs and dams has the potential for structural instabilities persuaded by water leakage pathways and linked to economic consequences. An environmental isotopic and hydrochemical research was conducted to determine the source and origin of seepages on the tunnel of Pandanduri dam, Lombok Island, Indonesia. This study aimed to examine the source of the tunnel leak on the dam site and the origin or source of water at the point of leakage based on water chemistry data and stable isotopes. To identify the source of the leakage water in the tunnel dam, 33 samples of the leakage water, groundwater, reservoir water, river water, and rainfall water were taken for chemical and isotopic composition analysis. The field measured the reservoir level, spring discharges, and physicochemical parameters (EC, pH, TDS, TSS). The physicochemical parameters show that the leakages water is similar to reservoir water. The types of leakage water in the tunnel belong to alkaline water, predominantly sulfate-chloride. This type of water is deep groundwater with a higher sulfate and chloride concentration than surface water or shallow groundwater. Hydrochemical and isotope analysis showed that water origin at leakage points is dominated by groundwater.
Stability Evaluation of Diversion Tunnel Portal Slopes at Lau Simeme Dam Site, Indonesia, using Limit Equilibrium Method Nurul Huda; I Gde Budi Indrawan; Wahyu Wilopo
Journal of Applied Geology Vol 7, No 1 (2022)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jag.58069

Abstract

Construction of the Lau Simeme Dam used a tunnel as a diversion channel. Slopes at the diversion tunnel portals were prone to failure due to the tunnel excavation and earthquake. Earthquake load was not considered in the designs of the inlet and outlet portal slopes. This research evaluated stability of the tunnel portal slopes under static and earthquake loads using limit equilibrium methods of the Bishop Simplified and Morgenstern-Price. Input material properties for the slope stability analyses were obtained from evaluations of soil and rock cores, including determination of lithology type and rock mass quality based on Geology Strength Index (GSI), and laboratory testing. Evaluations of soil and rock cores indicated that the inlet portal slope consisted of residual soil, good quality tuff breccia, and good quality sandstone. The outlet portal slope consisted of residual soil, poor quality sandstone, poor quality tuff breccia, fair quality sandstone, fair quality tuff breccia, and good quality tuff breccia. The earthquake load coefficient determined by the seismic analyses based on the peak ground acceleration map for 10% probability exceedance in 50 year was 0.125 g. The slope stability analyses showed that the designed inlet and outlet portal slopes were stable under static and earthquake loads. The Bishop Simplified and Morgenstern-Price resulted in relatively similar Fs values. The Fs values of the inlet and outlet portal slopes decreased with the earthquake load application. Although Fs values of the outlet slope under static and earthquake loads met the requirements specified by SNI 8460:2017, the rock mass conditions, particularly the poor rock masses of layers 2 and 3, required special attention. Application of slope reinforcement methods, such as shotcrete, is suggested to further increase the slope stability.
Assessment of Groundwater Vulnerability and Total Organic Carbon in the Shallow Groundwater of Wonosari City, Gunung Kidul, Yogyakarta, Indonesia Soutsadachan Chandalsouk; Doni Prakasa Eka Putra; Wahyu Wilopo
Journal of Applied Geology Vol 7, No 1 (2022)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jag.68007

Abstract

Wonosari city is the capital of Gunung Kidul regency of Yogyakarta Special Province. The city is located in the karst plateau overlaying a succesion of limestone lithologies. The groundwater on this city is shallow and people used this groundwater as their daily water supply. This study aims to determine the intrinsic groundwater vulnerability and to identify the TOC level in groundwater also to investigate the relationship between groundwater vulnerability and TOC levels in the groundwater. Field observation was conducted on 40 groundwater occurrences (dug wells, bore wells and springs) to investigate the aquifer types, overlying lithology and depth to groundwater. At the same time, 16 groundwater samples were taken from the dug wells and analyse for the TOC content. Secondary data was also collected from previous researches especially the information of sub-surface lithology. Groundwater vulnerability was evaluate by using GOD method and correlation between groundwater vulnerability and TOC in groundwater was analyzed spatially and statistically by using map pverlaying, linear regression and Spearman’s rho test, respectively. The results showed that the groundwater vulnerability in the city is dominated by extreme and high vulnerability, covers about 84 % of study area. The TOC level in the groundwater ranges between  4.532 mg/L to 6.849 mg/L which showing a process of pollution loading may occur. Linear regression and Spearman’s rho value show that the TOC levels and  groundwater vulnerability has a moderate positive correlation with r2 value of about 0.324 for linear regression. Despite the moderate correlation, the research prove that the groundwater vulnerability map reveals on this study is good enough to represent the ability of natural condition in protecting the groundwater quality.
Landslide Susceptibility Mapping of Menoreh Mountain Using Logistic Regression Nadia Sekarlangit; Teuku Faisal Fathani; Wahyu Wilopo
Journal of Applied Geology Vol 7, No 1 (2022)
Publisher : Geological Engineering Department Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jag.72067

Abstract

Menoreh mountain is one of the priority areas developed for tourism and to support sustainable development, it must pay attention to disaster aspects, one of which is landslides. The map published by Center for Volcanology and Geological Hazard Mitigation of Indonesia (PVMBG) has a regional scale, so it is necessary to have a more detailed landslide susceptibility map in the Menoreh Mountains. Identification and evaluation of the landslide conditioning factor were done using logistic regression so that the zonation of the probability of landslide susceptibility can be made. The data was used from field observation conducted at 372 locations including 129 locations where landslides occurred and from a local disaster management agency (BPBD) of 200 landslide locations. Significant landslide conditioning factors include slope, lithology, distance to lineaments, distance to river, and distance to road. The research area is divided into three susceptibility zones classified into low landslide susceptibility zone (0-0.33) covering 39.82%, moderate landslide susceptibility zone (0.34-0.66) covering 25.86%, and high landslide susceptibility zone (0.67-1.00) covering 34.31% of the whole area. Analysis using the logistic regression method has a model prediction accuracy rate of 90.5%, which means that it can predict landslide occurrence in the Menoreh Mountains accurately.
PENGARUH MUTASI TERHADAP AKTIVITAS BIOLEACHING MANGAN BAKTERI PENGOKSIDASI SULFUR Muhammad Zulfikrie; Wahyu Wilopo; I Wayan Warmada; Endah Retnaningrum
Jurnal Teknologi Mineral dan Batubara Vol 18, No 3 (2022): Jurnal Teknologi Mineral dan Batubara Edisi September 2022
Publisher : Puslitbang tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol18.No3.2022.1158

Abstract

Mangan merupakan jenis logam berat yang banyak digunakan dalam aktivitas manusia. Saat ini teknologi bioleaching menjadi alternatif dalam penambangan mangan karena dinilai lebih efektif dan ramah lingkungan. Kelompok bakteri pengoksidasi sulfur diketahui berpotensi dalam melakukan bioleaching mangan. Bakteri pengoksidasi sulfur dengan kode isolat MN1E telah berhasil diperoleh dari sumber air panas di Candi Gedong Songo, Semarang. Penelitian ini bertujuan untuk mengetahui pengaruh mutasi sinar ultraviolet (UV), sodium nitrit (NaNO2), dan dietil sulfat (DES), serta kombinasinya dengan berbagai waktu paparan (5,10, 15 menit) terhadap kemampuan bioleaching mangan dan ketahanan terhadap H2O2 dari isolat MN1E tersebut. Kemampuan bioleaching mangan diukur menggunakan metode Atomic Absorption Spechtrofotometry (AAS) selama 18 hari. Aktivitas bioleaching mangan tertinggi dilakukan oleh isolat mutan N5 dan D10 pada hari ke-18 dengan nilai persentase pelarutan masing-masing sebesar 14,22% dan 14,09%. Isolat mutan N5 memiliki ketahanan paling baik terhadap paparan H2O2. Isolat MN1E teridentifikasi sebagai anggota spesies Staphylococcus pasteuri dan potensial untuk diaplikasikan pada proses penambangan bijih mangan.
Co-Authors Abd Karim, Amirul Aiman Adelide Asriati Sekar Rianda Adhi Susanto Adi, Restu Dwi Cahyo Adriansyah, Yan Afandi, Moh Fahri Afrizal Abdi Musyafiq Agung Setianto Agus Aktawan Agus Budhie Wijatna Agus Prasetya Agus Prasetya Ahmad Agus Setiawan Ahmad Agus Setiawan Ahmad Taufiq Ahmad Tawfiequrrahman Yuliansyah Ainul Fatayaatis Salaamah Aisyah Shahirah Juhari Alessandro Pagliaroli AM Lelie Novia W Amalina, Anisa Nur Amirul Aiman Abd Karim Andriyanto Andriyanto Anh Bui, Tuan Ansori, Tirangga Ardiansyah Arief Budiman Arif Kusumawanto Arrisaldi, Thema Aspriadi, Feri Atikah Zahidah Atmaja, Ammar Dwi Avantio Pramaditya Bayu, Himawan Tri Boreborey, Ty Boulom, Johnny Bramono Dwi Kusumo Budi Nur Cahyo Daris, Pieter Jhon Joshua Deepak Chamlagain Defi Rizkasari Denizar Rahman Dianto Isnawan Didit Hadi Barianto Doni Prakasa Eka Putra Dwi Kusumo, Bramono Dwiana Muflihah Yulianti Dwikorita Karnawati Dwikorita Karnawati Egy Erzagian Ekasara, Adam Raka Endah Retnaningrum Endah Retnaningrum Endah Retnaningrum Endah Retnaningrum Endah Retnaningrum Endah Retnaningrum Endah Retnaningrum Esti Handini Fachry Abda El Rahman Fadliansyah, Fandi Fahriza Fawwas Asrory Farma Dyva Ferardi Fathan, Teuku Faisal Fatmawati, Nurlaila Feikal Aprieza Ferardi, Farma Dyva Ferian Anggara Fikri Faris Fikri Faris, Fikri Firginawan Surya Wanda Fuady Ahmad Lathif, Iqbal Fuady Ahmad Galeh Nur Indriatno Putra Pratama Giuseppe Lanzo H Setiawan Harry Leo Kharisma Haryono, Septiawan Nur Hendy Setiawan Heng, Salpisey Hermawan, Much. Taufik Tri Heru Hendrayana Hirajim, Tsuyoshi Hirajima, Tsuyoshi I Gde Budi Indrawan I Wayan Warmada Inderawan, Gde Budi Irvani Irvani Irvani, Irvani Irvani, Irvani Irwan Setyaji Johnny Boulom Joko Waluyo Junji Kiyono Junji Kiyono Junun Sartohadi K D Setyawan Keiko Sasaki Kezia Kartika Windya Kezia Kartika Windya Khan, Kamran Kirbani Sri Brotopuspito Kirbani Sri Brotopuspito Kirbani Sri Brotopuspito Kiyono, Junji Kusumaningrum, Serafica Btari Christiyani Lathif, Iqbal Fuady Ahmad Luthfi Effendi Luthfi Effendi Makealoun, Somyot Manixone Thepgnothy Maris Setyo Nugroho Mohammad Kholid Ridwan Mohammad Pramono Hadi Muflih, Ghufron Zaida Muhammad Haikal Razi Muhammad Hidayat Furqon Muhammad Sulaiman Muhammad Zulfikrie Myat Thu Naing Nadia Sekarlangit Nugroho, Sunu Ardhi Nurul Huda Nur’Aini Purnamaningsih Phyu Phyu Thin Puji Pratiknyo Puji Pratiknyo Pujo Widiyantoro, Wahid Pulung Arya Pranantya, Pulung Arya Pyi Soe Thein Pyi Soe Thein Qurrahman, Alfian Hardi R Risanti R. Andy Erwin Wijaya Rahman, Denizar Raja Susatio Raja Susatio Rama Tri Saksono Ramesh Adhikari Restu Dwi Cahyo Adi Restu Tandirerung Retnaningrum, Endah Retnaningrum, Endah Ridwan Budi Prasetyo Rilo Restu Surya Atmaja Ronggo Sadono Salaamah, Ainul Fatayaatis Salahuddin Husein Salpisey Heng Samodra, Guruh Santie, Putri Anjary Widya Sasaki, Keiko Satoru Kawasaki Sekar Rianda, Adelide Asriati Septiawan Nur Haryono Setiawan, Ahamd Agus Setiawan, Muhammad Anggri Shinta Dwi Novianti Slamet Widodo Somyot Makealoun Soutsadachan Chandalsouk Sri Anggoro Prahastono Srijono ., Srijono Srijono Srijono Srijono Srijono Srijono Srijono, Srijono Su Dar mono Subagyo Pramumijoyo Subagyo Pramumijoyo Subagyo Pramumijoyo, Subagyo Subur Priyono Sudarno, Ignatius Sunarko Sunarko Sunarko Sunarko Surya Damar Sasongko Putro Susatio, Raja Taufiq Muhammad Wijayanto Teuku Faisal Fathani Teuku Faisal Fathani Teuku Faisal Fathani Teuku Faisal Fathani Teuku Faisal Fathani Teuku Faisal Fathani Teuku Faisal Fathani Teuku Faisal Fathani Teuku Faisal Fathani Thein, Pyi Soe Thema Arrisaldi, S.T., M.Eng. Thepgnothy, Manixone Tsuyoshi Hirajim Tsuyoshi Hirajima Tsuyoshi Hirajima Tuan Anh Bui Ty Boreborey umi barokah Vienti Hadsari Warmada, Wayan Wawan Budianta Wijayanto, Taufiq Muhammad Wisnu Rachmad Prihadi Yan Adriansyah Yuli Fajarwati Yulianti, Dwiana Muflihah Zuhdi, Rasyid Zulaikha Budi Astuti Zulkifli Zulkifli