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All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Ilmu dan Teknologi Kelautan Tropis Jurnal Ilmu-Ilmu Perairan dan Perikanan Indonesia ILMU KELAUTAN: Indonesian Journal of Marine Sciences BULETIN OSEANOGRAFI MARINA Microbiology Indonesia Waste Technology Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Jurnal Wilayah dan Lingkungan JURNAL BIOLOGI INDONESIA Jurnal Sumberdaya Akuatik Indopasifik Jurnal Biologi Tropis Jurnal Pengelolaan Perikanan Tropis (Journal Of Tropical Fisheries Management) Indonesian Journal of Chemistry LIMNOTEK - Perairan Darat Tropis di Indonesia Bawal : Widya Riset Perikanan Tangkap Jurnal Ecolab Jurnal Kebijakan Perikanan Indonesia Jurnal Kelautan Nasional Jurnal Iktiologi Indonesia (Indonesian Journal of Ichthyology) Grouper: Jurnal Ilmiah Perikanan Habitus Aquatica : Journal of Aquatic Resources and Fisheries Management COJ (Coastal and Ocean Journal) Makara Journal of Science Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan LIMNOTEK Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Journal of Fisheries & Marine (Journal of Environmental Sustainability Management)

Sigid Hariyadi

Departemen Manajemen Sumberdaya Perairan, Fakultas Perikan Dan Ilmu Kelautan. IPB University. Indonesia

Author-ID : 557560

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Environmental Science Immunology & microbiology Library & Information Science Medicine & Pharmacology Social Sciences Veterinary Other

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Hubungan Antara Degradasi Mangrove Segara Anakan dan Penurunan Hasil Tangkapan Kepiting Bakau (Scylla sp.) di Kabupaten Cilacap, Provinsi Jawa Tengah Ismail Ismail; Sulistiono Sulistiono; Sigid Hariyadi; Hawis Madduppa
Jurnal Ilmu Pertanian Indonesia Vol. 24 No. 3 (2019): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

The area of mangrove Segara Anakan has a high economic value so that there is a high interest to various land uses in this area. This condition leads to the change in ecological function of the mangrove which has impacts on the decreased production of mangrove crabs. This study was desighed to analyze the areas of catching crabs related to mangrove ecosystem. This study was conducted for six months in the 3 mudcrab catching areas (Western Area, Central Area, and Eastern Area). The analysis used in this study was a one way ANOVA statistic for the crabs catching in these 3 catching areas, and a simple linear regression to analyxe the correlation betwen annual crab production and mangrove area. The results showsed that mud crabs catchings in the 3 areas is 5861.7; 6072.87; dan 7689.4 kg were significantly different (P<0.05) and the linear regression between the area of mangrove in Segara Anakan and crab’s production of the Cilacap Regency was Y= 14.951X-88357 with R2 = 0.54. These results described that the number of crabs catching was influenced by the condition of mangrove in the 3 catching areas while the regressionb analysis showed that the decreased mud crab’s production in Cilacap Regency was correlated to the decrease in the area of mangrove Segara Anakan.

Penataan Rancangan Lokasi Instalasi Pengolahan Air Limbah Terpadu Kampus Institut Pertanian Bogor Sigid Hariyadi; Niken Tunjung Murti Pratiwi; Majariana Krisanti; Adham Panji; Dwi Yuni Wulandari
Jurnal Ilmu Pertanian Indonesia Vol. 25 No. 3 (2020): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18343/jipi.25.3.449

Until now there has not been a centralized Wastewater Treatment Plant (WWTP) in IPB, even though there are wastewater treatments in several locations that are scattered in the campus area. Various activities on the Dramaga IPB campus have the potential to produce wastewater, such as laboratory activities, especially chemical and biological laboratories, canteens, offices, and dormitories. The existence of scattered laboratories requires a centralized and integrated WWTP. For this reason, mapping of wastewater distribution is needed to arrange the location of the wastewater treatment plant, within the campus. Interviews with the perpetrators of activities, measurement of wastewater quality, and sampling, were carried out at the work units producing wastewater on the campus of IPB. The distribution of wastewater was grouped according to the location of the work units producing waste and identified the types of waste produced (B3-dangerous and toxic and non-B3), then presented in a map. The map was used as a reference in determining the location of wastewater treatment plants. The results showed that each work unit contributes organic waste that was not too different, the source of inorganic and B3 wastewater distribution followed the location of the laboratory which was also quite scattered in the Dramaga IPB campus area. Based on the distribution of available waste, the presence of wastewater in the campus environment of IPB was divided into two regional groups. Therefore, the location of the wastewater treatment plant was directed at two locations, namely on the Northeast side (IPAL I) and the West side (IPAL II) of IPB campus. Keywords: wastewater characteristics, wastewater distribution, wastewater treatment plant

KONDISI MANGROVE DAN PRODUKSI IKAN DI DESA GRINTING, KECAMATAN BULAKAMBA, KABUPATEN BREBES Agustinus M. Samosir; Edi F Prahastiano; Sigid Hariyadi
Jurnal Ilmu-Ilmu Perairan dan Perikanan Indonesia Vol. 17 No. 1 (2011): Juni 2011
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (468.357 KB)

Penelitian ini dilakukan untuk mengkaji kondisi mangrove dan hubungannya dengan produktivitas perikanan dalam skala desa. Teknik yang digunakan adalah metode survei dan pencacahan; sedangkan analisis yang digunakan ada dua, yaitu secara kuantitatif dengan uji F dan deskriptif dengan metode analisis komponen utama (PCA). Tiga area pertambakan yang diairi oleh tiga kanal sekunder yag berbeda dipilih untuk dibandingkan kondisi mangrove, kualitas air, produksi perikanan tangkap, dan produksi akuakulturnya. Hasil analisis statistik memperlihatkan bahwa ketiga kanal tersebut memiliki kondisi yang berbeda nyata, dimana areal pertambakan (kanal) I, II, dan III berturut-turut memiliki daerah hijau mangrove seluas 3,99 ha, 4,57 ha, dan 3,33 ha, dengan produksi perikanan tangkap 2,70; 3,99; dan 1,94 kg/upaya/hari; sedangkan produktivitas tambaknya masing masing sebesar 202,22; 183,33; dan 232,67 kg/ha/6 bln. Hasil uji PCA menunjukkan adanya hubungan antara mangrove, kualitas air, dan produksi perikananan tangkap serta akuakultur, dimana perikanan tangkap berbanding lurus terhadap keberadaan mangrove, DO, dan klorofil a; sebaliknya kegiatan budidaya telah mengakibatkan tekanan terhadap keberadaan mangrove dan kualitas air yang dalam hal ini terwakili oleh pH.Kata kunci: akuakultur, kualitas air, mangrove, perikanan tangkap, produksi ikan

ECONOMIC IMPACT FROM PLASTIC DEBRIS ON SELAYAR ISLAND, SOUTH SULAWESI Roni Hermawan; Ario Damar; Sigid Hariyadi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 9 No. 1 (2017): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Sampah plastik dalam jumlah besar terdeposit di pesisir Pulau Selayar yang berhadapan langsung dengan Laut Jawa selama musim barat. Sampah plastik telah menimbulkan dampak sosial dan ekonomi bagi nelayan di Pulau Selayar. Penelitian ini bertujuan untuk mengkaji komposisi, kepadatan dan sebaran dari sampah plastik; dampak terhadap sosial dan ekonomi. Metode transek garis digunakan dalam penelitian ini untuk menentukan jumlah dan sebaran sampah plastik. Ukuran sampah plastik yang diamati adalah >2,5 cm dikategorikan sebagai sampah makro. Penelitian ini dilaksanakan pada Februari sampai Maret 2016. Dampak sampah plastik menurunkan pendapatan dari pariwisata, industri perikanan, mengganggu operasi penangkapan ikan, memerlukan pembersihan dan perbaikan pada alat langkap. Biaya yang dikeluarkan untuk perbaikan dan pembersihan kapal ikan sekitar 192,9 juta rupiah tiap tahun dan perbaikan alat tangkap 156,2 juta rupiah per tahun. Sampah plastik terdiri dari botol plastik, gelas plastik, tali dan jaring ikan, korek gas, keranjang plastik, pelampung, kemasan plastik, sikat gigi dan alat suntik. Rata-rata sampah plastik adalah 9,5 ± 2,7 item/m2 dan berat sekitar 229,2 ± 109,9 g/m2.Kata kunci: dampak, manajemen, Pulau Selayar, sampah plastik, sosial-ekonomi

SISTEM SOSIAL EKOLOGI KAWASAN DESA PESISIR KABUPATEN SUBANG . Muliani; Luky Adrianto; Kadarwan Soewardi; Sigid Hariyadi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 10 No. 3 (2018): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

ABSTRAK Interaksi sistem sosial - ekologi di desa pesisir sering menimbulkan permasalahan, mulai dari menurunnya kualitas ekologi hingga terjadinya konflik sosial. Penelitian ini bertujuan untuk menganalisis sistem sosial - ekologi yang terdapat di Desa Blanakan, Desa Tanjungtiga, Desa Rawameneng, dan Desa Mayangan serta mengetahui jaringan konektivitas sistem sosial - ekologi dari desa pesisir yang terintegrasi. Data yang dikumpulkan berupa data primer dan sekunder terkait sistem sosial dan sistem ekologi, analisis data dilakukan secara deskriptif kuantitatif dan spasial deskriptif. Hasil penelitian menunjukkan bahwa sistem sosial – ekologi Desa Blanakan, Desa Tanjungtiga, Desa Rawameneng, dan Desa Mayangan tersusun atas jaringan sumberdaya berupa sumberdaya ikan, sumberdaya ekosistem, sumberdaya lahan, dan sumberdaya air yang digunakan oleh nelayan, petani, dan masyarakat umum. Keberlanjutan pemanfaatan sumberdaya didukung oleh ketersediaan infrastruktur yang disediakan oleh pemerintah dan swasta. Jaringan konektivitas sistem sosial - ekologi dari integrasi desa pesisir menunjukkan bahwa sistem sosial antar desa pesisir terkonektivitas melalui interaksi pendidikan, kelembagaan nelayan, pelayaanan kesehatan, dan interaksi lainnya, sedangkan interaksi sistem ekologi terkonektivitas melalui jaringan fishing ground dan pemanfaatan ekosistem mangrove secara bersama terutama antara Desa Blanakan dan Desa Mayangan. ABSTRACTThe interactions of the socio-ecological systems in the coastal villages often create problems, ranging from the declining ecological quality to social conflicts. This study aimed not only to analyze the socio-ecological systems in the villages of Blanakan, Tanjungtiga, Rawameneng, and Mayangan, but also to find out the connectivity network of socio-ecological systems of the integrated coastal villages. The data collected included primary and secondary data related to social and ecological systems. The data analysis was performed in descriptive-quantitative and descriptive-spatial manners. The results showed that the socio-ecological systems of Blanakan Village, Tanjungtiga Village, Rawameneng Village, and Mayangan Village were composed of resource networks such as fish resources, ecosystem resources, land resources, and water resources used by fishermen, farmers and general public. The sustainable utilization of the resources was supported by the availability of infrastructure provided by the government and the private sector. The connectivity network of socio-ecological ecosystems of the integrated coastal villages showed that the social systems among coastal villages were connected through educational interactions, fishermen institutions, health services, and other interactions, while the interaction of the ecological system was connected through fishing ground networks and the shared utilization of mangrove ecosystems, especially between Blanakan Village and Mayangan Village.

Daily Accumulation and Impacts of Marine Litter on The Shores of Selayar Island Coast, South Sulawesi Roni Hermawan; Ario Damar; Sigid Hariyadi
Waste Technology Vol 5, No 1 (2017)
Publisher : Diponegoro University

West coast of Selayar facing solid marine litter during west monsoon period December until March, marine litter come from floating litter, carried by sea surface current and deposited along the west coast. Marine litter deposited on the west coast affected social, economic and ecological. This study aims to determine type, weight, density and distribution of marine litter; the impact of litter on water quality; the impact of economic, social and environmental ecosystems. Retrieved data using line transect at 7 observation points. Litter size were observed (> 2.5 cm) or macro litter. Floating litter and daily incresing of litters were also analyzed. Inorganic waste density is 14.3 ± 2.97 items/m2 for the number of pieces and 564.8 ± 196.1 g/m2 for waste weight. Daily accumulation was about 1 445 ± 1 743 g/m/day, the number of pieces 14.3 ± 8 item/m/day, cubication 0.0187 ± 0.019 m3/m/day. The impacts on seagrass and biota such as broken leaves, crushed and organism rafting on floating litter some types of coral such as Favia fragum, types of crustaceans such as Balanus. sp, Lepas. sp, Dosima. sp which affect the bio-diversity.

Analisis Keberlanjutan Pembangunan Kota Tepian Pantai (Studi Kasus: Kota Baubau Provinsi Sulawesi Tenggara) Suparman Supardi; Sigid Hariyadi; Achmad Fahrudin
Jurnal Wilayah dan Lingkungan Vol 5, No 3 (2017): December 2017
Publisher : Department of Urban and Regional Planning, Diponegoro University

The complexity of coastal development in Baubau City needs to be anticipated carefully for hindering coastal ecosystems sustainability away from disruptions and threats. Environmental degradation resulted from developments could be disastrous to economic and infrastructure sectors as well as human lives. Therefore, development initiatives are supposed to comply with the principles of sustainable development. Accordingly, sustainability analysis is necessary to figure out the sustainability status of Baubau City development. The purpose of this study is to analyze the sustainability of Baubau City development in accordance with multidimensional measurement of ecological, economic, social, infrastructure and technology, and law and institution. The data used in this study include primary and secondary data obtained through literature studies, expert discussions/stakeholder, interviews, questionnaires, and field surveys. The sustainability analysis applies multidimensional scaling, leverage, Pareto, and Monte Carlo techniques. The results show that Baubau City is quite sustainable in technological infrastructure dimension (74,77), and institutional law dimension (65,87), but less sustainable in ecology dimension (32,90) and economic dimension (41,87), and unsustainable in social dimension (20,61). In addition, there are 35 sensitive attributes affecting the sustainability of Baubau City development.

Photosynthesis of Periphyton and Diffusion Process as Source of Oxygen in Rich-Riffle Upstream Waters NIKEN TUNJUNG MURTI PRATIWI; SIGID HARIYADI; RIFKI TAJUDIN
Microbiology Indonesia Vol. 5 No. 4 (2011): December 2011
Publisher : Indonesian Society for microbiology

Most of dissolved oxygen content in stream or river water is obtained from the process of photosynthesis and diffusion. Photosynthesis process in running water is performed by autotrophic organisms, especially community of attached micro-algae or periphytic micro-algae that live attached to stone or other substrates, while intensive diffusion process occurred as water flows. Rich riffle upstream waters are characterized by stony bottom and high current. The role of the periphyton photosynthesis result and diffusion process along the water current was examined by this research. A field experimental observation was carried out at the upstream of Cisadane River (600m asl) with two different natural light conditions, the light or exposed (24630-104240 Lux) and shadowy (11120-65300 Lux) conditions. The actual dissolved oxygen contents in the area with the two conditions are relatively similar; 7.3 (light) and 7.0 mg L-1 (shadowy). Oxygen supports were significantly different at the light and shadowy conditions, whether from diffusion process 71.71% and 79.37%, respectively, or from periphyton photosynthesis, 21.73% and 15.30%, respectively. The compositions of periphytons living in the two conditions were similar; mostly composed by group of Diatom, with the same dominant species of Thalassiothrix sp. The difference in periphyton growth was shown by its density. In the light condition, the Diatom tends to grow at higher density in comparison to the shadowy condition. The role of periphyton to support oxygen in upstream waters is light dependent. The higher the light intensity (Photosynthetic Active Radiation ranged), the higher the support of oxygen will be.

EVALUASI KUALITAS AIR SUNGAI-SUNGAI DI KAWASAN DAS BRANTAS HULU MALANG DALAM KAITANNYA DENGAN TATA GUNA LAHAN DAN AKTIVITAS MASYARAKAT DI SEKITARNYA Elvi Yetti; Dedi Soedharma; Sigid Hariyadi
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 1 No. 1 (2011): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.1.1.10

Brantas River that is located at Upper Brantas River Basin Area has been polluting that is noted by poluttion that taking place at Karangkates and Sengguruh Reservoir. Development of people and industries around Malang Upper Brantas River Basin Area since 2000, leading to increasing of river water using and pollution, particularly organic pollution. This research evaluated river water quality at Malang Upper Brantas River Basin Area, refered to water quality standard inserted on Governmental Regulation Number 82 / 2001 (PP No. 82 tahun 2001) and observed its relation to land use system and its surrounding people activity. Water quality is observed at 18 station focusing on physical parameters such as temperature, conductivity, suspended solid, and chemical parameters such as pH, DO, BOD, COD, N-nitrate, total nitrogen, orthophosphate and total phosphorous. Furthermore, water quality status is determined by using of pollution index methode, based on Environment Ministerial Regulation Number 115 / 2003 (Kep. Men. LH No. 115 tahun 2003). Evaluation result was related to land use system at Upper Brantas River Basin Area and its surroundings people activity. Evaluation result showed that, water quality has been decreasing at that area compared with the year of 1997-2002, and furthermore almost at all stations the value of COD has exceeded maximum limit threshold. Determination of water quality status also showed that all rivers at Upper Brantas River Basin has been polluted, majority with medium polutted grade. Research the result also showed that river water quality at Malang Upper Brantas River Basin is influenced by land use system and its surroundings people activity, particuarly by industries located along the river basin. Key Words: Evaluation of River Water Quality, Upper Brantas River Basin, land use system, surroundings people activity

ANALISIS DAYA TAMPUNG BEBAN PENCEMAR SUNGAI PESANGGRAHAN (SEGMEN KOTA DEPOK) DENGAN MENGGUNAKAN MODEL NUMERIK DAN SPASIAL Muhamad Komarudin; Sigid Hariyadi; Budi Kurniawan
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol. 5 No. 2 (2015): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.5.2.121

The objective of the study is to calculate and analyze the pollution load capacity of the specified river segment using combination of the water quality model “QUAL2Kw” and Geographic Information System (SIG). Location of the study is Pesanggrahan river in the Depok City sections. The result of modeling shows that the actual pollutant load discharged to the river section for BOD, COD and TSS are 8.257; 59.930 dan 48.975 kg/days, respectively. Meanwhile the allowable pollutant load or the pollution load capacity of the section of the river for those pollutant parameters are 8.111, 58.20; 49.085 kg/days, respectively. It indicates that the pollution load capacity of the section of the river has been exceeded that needs reduction as much as load of 146 kg/days for BOD, 1,650 kg/days for COD and 110 kg/days for TSS in order to to meet the set water quality standard of the river section. The coefficient of determination (r2) of 0,99 for BOD and COD and 0,998 for TSS indicates that the modelled concentration of BOD, COD and TSS and those concentration of measured results show the strong relationship and the low value difference. In addition, the calibration of modeling results have an error rate of less than 10% indicated by the value of RMSE of 0.065, 0.09, 0.2 for BOD, COD and TSS, respectively. The error value shows that the water quality modeling results can be used for predicting the pollution load capacity or the allowable pollutant load of the river sectionKeywords: allowable pollutant load, GIS, Pesanggrahan River, pollution load capacity, QUAL2Kw

Co-Authors . Muliani Achmad Fahrudin Adham Panji Agung Dhamar Syakti Agustinus M Samosir Aliati Iswantari Andri Warsa Ario Damar Ayu, Inna Puspa Bambang Kurniadi Budi Kurniawan Charles Parningotan Haratua Simanjuntak Dade Jubaedah Dade Jubaedah Dede Heri Yuli Yanto Dedi Soedharma Dewayani Sutrisno Dirgantara, Pedryn Djamar Tumpal F. Lumbanbatu Dwi Suci Indah Permata Sari Dwi Yuni Wulandari Edi F Prahastiano ekamaida, ekamaida Elvi Yetti Emmanuel Manangkalangi Enan Mulyana Adiwilaga Endang Juniardi Etty Riani Fatreza, Ridho Fatwa, Esa Buana Fitri Afina Radityani Fonseca, Abilio da Fuquh Rahmat Shaleh Ghinarrahmi Afiyatillah Gunawan Pratama Yoga, Gunawan Pratama H Wijayanto Handoko Adi Susanto Hasibuan, Febya Rizki Hawis H Madduppa Hefni Effendi Hermana, Indra Setiadi Hidayah, Rofi’ul Hidayat Hidayat Hilman Hidayat I Wayan Nurjaya Ida Lapadi Ika Fitria Hasibuan Indri Yani Zaini Irfanudin Rizaki Ismail Ismail Ismudi Muchsin Ismudi Muchsin Jamal, Aulia Fitri Joni Haryadi D Kadarwan Soewardi Kadarwan Soewardi Kadarwan Soewardi Kaswanto, Regan Leonardus Kaswanto Kiswari, Dhona Indah Kiswari, Dhona Indah La Ode Alifatri Lufisari Herdianti lukman, lukman Luky Adrianto M. F. Rahardjo M. Fadjar Rahardjo M. Fadjar Rahardjo M. Mukhlis Kamal, M. Mukhlis Majariana Krisanti Mala Nurilmala Marisi, Dany Poltak Mennofatria Boer Mohammad Mukhlis Kamal Muarif Muarif Muchsin, I. Muhamad Komarudin Muhamad Suhaemi Syawal Mukti Ali Muliani Muliani Nadya Adharani Nandi Abdul Aziz Nasution, Syahroma Husni Neri Kautsari Niken T.M. Pratiwi Niken TM Pratiwi Niken TM Pratiwi Niken Tunjung Murti Pratiwi Novi Andareswari Novita MZ Nursiyamah, Siti Nursiyamah, Siti Pangaribuan, Adianto Paskalina Theresia Lefaan Purwoko, Agus Rahman Rahman Rahmat Padyawan, Andhy Renny K Hadiaty Renny K. Hadiaty Renny K. Hadiaty RIFKI TAJUDIN Rita Rostika Romi Seroja Roni Hermawan Roni Hermawan Rusdi Husin Santos, Alzira de Jesus dos Selvi Marcellia Setyobudiandi, I. Sita Heris Anita Siti Rosa Oktavia Solly Aryza Sonja Kleinertz Sugiarti, Ade Sulaiman, Goran Suryanti Afifah Sulaiman, Goran Suryanti Afifah Sulistiono Sulistiono Sulistiono Sulistiono Sulistiono Suparman Supardi Suprihatin Suprihatin Suprihatin Suprihatin SYAHRIAL SYAHRIAL Syamsul Bahri Agus, Syamsul Bahri Syarif, Nawas Taryono Taryono Taryono, Taryono Taslim Arifin Tri Apriadi Tri Suryono, Tri Triwisesa, Endra Triyadi Purnomo Yonvitner - Yusli Wardiatno

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