Article Per Year (5 Year)
p-Index From 2021 - 2026
10.365
P-Index
This Author published in this journals
All Journal Jurnal Natur Indonesia Jurnal Perikanan dan Kelautan Berkala Perikanan Terubuk Jurnal Ilmu Lingkungan Jurnal Kajian Lingkungan Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Aquasains : Jurnal Ilmu Perikanan dan Sumberdaya Perairan Asian Journal of Aquatic Sciences Jurnal Zona Journal of Coastal and Ocean Sciences Journal of Rural and Urban Community Empowerment Dinamika Lingkungan Indonesia Bhakti Nagori (Jurnal Pengabdian kepada Masyarakat) EcoNews Jurnal Perikanan dan Kelautan Tropical Marine Environmental Sciences Jurnal Natur Indonesia
Sofyan Husein Siregar
Universitas Riau
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Energy Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Social Sciences Other

Published : 167 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 167 Documents
Search

 10   11   12   13   14 
EFFECT OF DIFFERENT TYPES OF FERTILIZER ON THE GROWTH OF MARINE PHYTOPLANKTON POPULATION Chlorella vulgaris Fauzan, M.; Siregar, Sofyan Husein; Nasution, Syafruddin
Asian Journal of Aquatic Sciences Vol. 4 No. 1 (2021): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

This research was conducted on October 13-26, 2019 in the Regional Technical Implementation Unit of the Seawater and Brackish Aquaculture Fisheries Office (UPTD BPBALP Teluk Buo), West Sumatra. This study aims to determine the effect of applying different types of fertilizers to the growth of Chlorella vulgaris microalgae populations on laboratory scale culture. The method used in this study was an experimental method in the laboratory using a completely randomized design (CRD) one factor, namely the difference in fertilizer types with 3 (three) replications. Fertilizers used are Walne fertilizer, ZA (Zwavelzure Ammoniak) and TSP (Triple Super Phosphate). The testing organism in this study was phytoplankton C. vulgaris. The container used was a glass jar (3 liter capacity). The parameters measured in this study include absolute growth, relative growth, specific growth, self-doubling time and water quality. The results of this study indicate that the best type of fertilizer for C.vulgaris population growth was TSP fertilizer, followed by ZA fertilizer and the lowest in Walne fertilizer.
COMMUNITY STRUCTURE OF PHYTOPLANKTON AND CHLOROPHYLL-α CONCENTRATION IN THE SUNGAI MESJID VILLAGE DUMAI RIAU PROVINCE Nugraha, Rafiq Prima; Nurrachmi, Irvina; Siregar, Sofyan Husein
Asian Journal of Aquatic Sciences Vol. 4 No. 1 (2021): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

The research was conducted in December 2019 at Sungai Mesjid Village Dumai Riau Province. This study aims were to know the condition of water quality, know the structure of the phytoplankton community, know the concentration of chlorophyll-a and know the effect between chlorophyll-a concentration and phytoplankton abundance in waters. The method used in this study was a survey method. The research location is divided into 3 station points namely Bangsal Aceh, Marine Station and Jalan Dermaga. The results showed that the quality of waters classified as oligotrophic waters. Phytoplankton found in this study consisted of 4 classes and 12 species of phytoplankton and the abundance of phytoplankton has a range between 195.57 - 244.33 ind./l. Diversity index (H') ranges from 1.2951 - 2.1705, dominance index (D) ranges from 0.24 to 0.46 and uniformity index (E) ranges from 0.7825 to 0.9551. The chlorophyll-a concentration in waters of Sungai Mesjid Village in Dumai ranged from 0.0025 to 0.0210 mg/L. Phytoplankton abundance and chlorophyll-a concentration has a moderate effect, wherewith increasing chlorophyll-a concentration, phytoplankton abundance will also increase.
THE EFFECT OF PLASTIC COVERS WITH DIFFERENT COLOR ON THE TYPE AND ABUNDANCE OF EPIPELIC DIATOMS IN THE NATURAL LOVERS INTERTIDAL AREA (PAB) CITY OF DUMAI Nisa, Chairun; Siregar, Sofyan Husein; Nasution, Syafruddin
Asian Journal of Aquatic Sciences Vol. 6 No. 1 (2023): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

The purpose of this study was to determine the effect of the plastic cover with different colors on the type and abundance of epipelic diatoms. This research was conducted in March 2022 which is located in the Pecinta Alam Bahari (PAB) area of ​​Dumai City. The method used is an experimental method with plastic cover treatment with different colors. This experiment has one factor, namely plastic color, with four levels of treatment, namely no plastic (control), clear, red, and black colors. The type of plastic used is the same type of plastic. The experimental units are made of iron which is assembled with a size of 1x1m and 12 subunits are measuring 10x10 cm. Observations were made every day for three consecutive days. The results showed that there were 15 species of epipelic diatoms, where the species that were often found every day were Cosdisnodiscus sp., Gyrosigma sp., Navicula sp., and Pleurosigma sp., Skeletonema sp, Striatella sp, Synedra sp. The abundance of diatoms in the treatment without plastic ranged from 38993.8 - 68239.2 ind/cm2, the clear plastic cover ranged from 39880.04 to 67353.0 ind/cm2, the red plastic cover ranged from 31904.0 to 69125.4 ind/cm2, and the black plastic cover ranged from 28359.14 – 54945.83 ind/cm2. The results of the One Way Anova test between treatments showed a significant difference every day, except on day 0 which was not significantly different.
THE RELATIONSHIP OF NITRATE AND PHOSPHATE WITH ABUNDANCE OF EPIPELIC IN THE WATERS OF SUNGAITOHOR VILLAGE, REGENCY OF MERANTI ISLANDS, RIAU PROVINCE Beranda, Ongki Okto; Amin, Bintal; Siregar, Sofyan Husein
Asian Journal of Aquatic Sciences Vol. 3 No. 3 (2020): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

The study was conducted in August-October 2019. Aims to determine theconcentration of nitrate, phosphate, uniformity index, diversity and index of dominancy,abundance of epipelic diatoms and know the relationship between nitrate,phosphate and epipelic abundance diatoms in the water area of Sungaitohor Desa Meranti of Riau Islands district. The method used in this research is a surveymethod consisting of 4 research stations. Location of observation and sampling is in the waters of Muara Sungaitohor Kabupaten Meranti Islands. Basedon the results of this study of nitrateconcentrations in the waters of Sungaitohor Bekisar village 0,068-0,092 mg/l, phosphate concentrations ranged0,097-0,220 mg/L. The Epipelic diatom found in the water area of Sungaitohorvillage amounted to 14 types. As for the abundance of type diatomsepipelics ranged from 27,531.72– 40,531.72 ind/cm2. From theCalculation of the community structure diatoms epipelic obtained diversityindex value (H ') which indicates a low index value of h ' has a value of2.7527 and is at a range of 1 ≤ H ' ≤ 3. The uniformity index (E) indicatesthat an epipelic spread is not balanced with an average value of 0.3643uniformity and is at a range of value ≤ 0.5. Meanwhile, the Dominance index (D)shows the value of 0.1704 where the value of the area in the waters of Sungaitohor village does not dominate. The relationship of abundance ofepipelic diatoms with the concentration of nitrate is positive and very weak,with a correlation coefficient of R = 0.0030. While the relationship ofAbundance diatomic epipelic relationship with phosphate concentrations isnegative and weak, with a correlation coefficient r = 0.262. Abundance ofdiatomic epipelics is directly proportional to the concentration of nitrate andinversely proportional to phosphate concentrations.
THE EFFECT OF AMMONIUM SULPHATE (ZA) FERTILIZER CONCENTRATION ON THE GROWTH OF MICROALGA POPULATION (Nannochloropsis oculata) Fery, Rony Andes; Nasution, Syafruddin; Siregar, Sofyan Husein
Asian Journal of Aquatic Sciences Vol. 3 No. 2 (2020): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

This research was conducted from 24 June to 6 July 2019 in the Regional Technical Implementation Unit of the Seawater and Brackish Aquaculture Fisheries Center (UPTD BPBALP Teluk Buo), West Sumatra. This study aim to determine the effect of Ammonium Sulfate ((NH4)2SO4) with different concentrations on the growth rate of Nannochloropsis oculata microalgae population. The method used in this study is an experimental method using a completely randomized design (CRD) one factor, namely ZA fertilizer concentration. There were 5 (five) levels concentration tested, namely 0 ml/L (control treatment), 30 ml/L (treatment A), 40 ml/L (treatment B), 50 ml/L (treatment C), and 60 ml/L (treatment D) total of 15 treatment units. The test organism in this study was N. oculata. The container used is a glass jar (2 liter capacity). The test parameters in this study are the maximum cell population density achieved during 5 days of maintenance (120 hours), relative growth, self-doubling time and specific growth rate during the exponential growth phase. The results of this study indicate that the best concentration of ZA fertilizer for cell population growth is 40 ml/L, followed by a concentration of 30 ml/L, a concentration of 50 ml/L, a concentration of 60 ml/L and the lowest at a concentration of 0 ml/L (control).
FERTILITY ANALYSIS OF BUNGUS TELUK KABUNG WATERS BASED ON THE CONCENTRATIONS OF NITRATE, PHOSPHATE, AND THE ABUNDANCE OF PHYTOPLANKTON Lazuardi, Andika; Nedi, Syahril; Siregar, Sofyan Husein
Asian Journal of Aquatic Sciences Vol. 5 No. 1 (2022): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Water fertility is the capacity or ability of waters to provide suitable nutrients for the life of phytoplankton so that it can produce optimum production. This research was conducted on June 2021 in the Waters of Bungus Teluk Kabung, Padang, West Sumatra. The purpose of this study was to determine the fertility level of Bungus Teluk Kabung waters based on the concentration of nitrate, phosphate, and the abundance of phytoplankton. The results of this study show that the fertility rate of Bungus Teluk Kabung waters based on the value of nitrate concentration, phosphate, and phytoplankton abundance in the waters of Bungus Teluk Kabung, Padang, West Sumatra, belongs to the category of waters with low fertility levels (Oligotrophic) to moderate fertility levels (Mesotrophic). The concentration of nitrate and phosphate has a weak relationship with the abundance of phytoplankton in the waters of Bungus Teluk Kabung and there isn’t any significant effect between the concentration of nitrate and phosphate with the abundance of phytoplankton in the waters of Bungus Teluk Kabung, Padang, West Sumatra.
DAMPAK PENCEMARAN LIMBAH PLASTIK TERHADAP EKOSISTEM MANGROVE DI KELURAHAN PANGKALAN SESAI KOTA DUMAI Siregar, Sofyan Husein; Mubarak, Mubarak; Zulkifli, Zulkifli
Journal of Rural and Urban Community Empowerment Vol. 4 No. 2 (2023): April
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Peningkatan tumpukan sampah plastik terus terjadi seiring dengan perubahan pola komsumsi masyarakat yang tidak bisa lepas dari penggunaan barang berbahan plastik dalam kehidupan sehari-hari, misalnya kantong plastik. Plastik banyak digunakan dikarenakan mudah dalam penggunaannya, ringan, dan memiliki daya tahan yang lama. Hal ini juga terjadi penumpukan sampah plastik di Kawasan mangrove di Pangkalan Sesai Dumai dikarenakan masyarakat masih sering membuang sampah plastik ke kawasan perairan yang masuk saat pasang dan berdampak terhadap flora dan fauna di ekosistem mangrove. Tujuan dari penyuluhan ini adalah untuk memformulasikan pembentukan kelompok pengelolaan Bank Sampah di Kelurahan Pangkalan Sesai. Metode yang digunakan dalam kegiatan penyuluhan ini adalah metode ceramah, diskusi dan dan merancang penyusun pengelola Bank Sampah di Pangkalan Sesai. Hasil evaluasi terhadap 25 orang peserta penyuluhan menunjukkan bahwa 90% peserta belum paham tentang bagaimana tentang pengeloaan bank Sampah dan 10% faham sebatas kegiatannya saja. Setelah mengikuti kegiatan penyuluhan ini terjadi peningkatan 70% pengetahuan tentang bagaimana cara mengelola Bank Sampah. hal ini terlihat dari antusias peserta dalam tanya jawab dengan pemateri dan tingginya keinginan peserta untuk membentuk Bank Sampah dengan terbentuknya formatur kepengurusan yang terdiri Pengawas, Ketua Sekretaris. Bendahara, Devisi teknis, dan Operasional.
PENGELOLAAN EKOWISATA MANGROVE DESA MENGKAPAN, KECAMATAN SUNGAI APIT, KABUPATEN SIAKq Siregar, Sofyan Husein; Zulkifli, Zulkifli
Journal of Rural and Urban Community Empowerment Vol. 3 No. 1 (2021): Oktober
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Salah satu kegiatan pemamfaatan ekosistim manggrove berbasis konservasi adalah kegiatan Ekowisata Mangrove. Desa pesisir Mengkapan salah satu wilayah masih memiliki mangrove yang masih baik dan terdapat kawasan ekowisata yang di kelola secara swadaya oleh masyarakat sejak tahun 2016 namun belum berjalan secara optimal disebabkan pemahaman dan kemampuan masyarakat dalam Pengelolaan Ekowisata Mangrove Desa Mengkapan, Sungai Apit, Kabupaten Siak masih sangat minim. Tujuan dari penyuluhan ini adalah untuk meningkatkan pemahaman dan pengetahuan masyarakat tentang pengelolaan ekowisata mangrove yang komprehenship dengan memperhatikan kelestarian dan peningkatan ekonomi bagi masyarakat lokal. Metode yang digunakan dalam kegiatan penyuluhan ini adalah metode ceramah, diskusi dan kunjungan langsung ke lokasi kawasan ekowisata mangrove mengkapan yang dikelola oleh masyarakat. Hasil evaluasi terhadap 25 orang peserta penyuluhan menunjukkan bahwa 90% peserta belum paham tentang pengeloaan ekowisata mangrove dan 10% faham sebatas kegiatannya saja. Setelah mengikuti kegiatan penyuluhan ini terjadi peningkatan 70% pengetahuan tentang bagaimana cara mengelola ekowisata mangrove hal ini terlihat dari Tanya jawab yang dilakukan oleh pemateri. Berdasarkan kunjungan ke kawasan mangrove dan saran dari peserta perlu adanya peningkatan sarana prasarana pendukung kegiatan ekowisata dan pendampingan masyarakat untuk dapat sebagai pemandu ekowisata mangrove.
PENINGKATAN PENGETAHUAN DAN KETERAMPILAN KELOMPOK KONSERVASI LASKAR MANDIRI DALAM PEMBIBITAN DAN PENANAMAN BIBIT MANGROVE DI DESA KAYU ARA PERMAI KAB. SIAK Efriyeldi, Efriyeldi; Mulyadi, Aras; Samiaji, Joko; Siregar, Sofyan Husein; Elizal, Elizal; Ramadhan, A.R; Rizki, A.; Yanti, D.H.; Despela, Despela; Sari, D.J.; Rahmita, R.; Ginting, T.B.; Wahyudi, Wahyudi; Desmarina, Y.; Zientika, Zientika
Journal of Rural and Urban Community Empowerment Vol. 2 No. 1 (2020): Desember
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/p0tsbv36

Abstract

Hutan mangrove merupakan salah satu ekosistem pesisir yang mempunyai banyak peranan, namun saat ini banyak mengalami kerusakan.Upaya untuk memperbaiki kondisi telah dilakukan melalui penanaman kembali. Kegiatan itu memerlukan bibit mangrove. Tujuan pengabdian kepada masyarakat ini adalah untuk meningkatkan pengetahuan dan keterampilan masyarakat, khususnya anggota kelompok konservasi Laskar Mandiri dalam membibitkan dan menanam bibit mangrove untuk kebutuhan merehabilitasi hutan mangrove yang rusak di Desa Kayu Ara Permai Kecamatan Sungai Apit. Metode yang digunakan dalam melaksanakan kegiatan pengabdian kepada masyarakat ini adalah ceramah, tanya jawab, peragaaan dan praktek tentang semua rangkaian pembibitan dan penanaman bibit mangrove dengan melibatkan secara langsung semua tim pengabdian termasuk mahasiswa kukerta UNRI tahun 2020. Untuk mengetahui pemahaman peserta terhadap materi yang disampaikan dilakukan evaluasi dengan meminta peserta mengisi kuisioner sebelum dan setelah kegiatan dilakukan. Data yang diperoleh dianalisis secara deskriptif. Hasil kegiatan penyuluhan ini menunjukkan bahwa peserta mengikuti dengan serius mendengarkan materi yang disampaikan oleh tim penyuluh dari awal sampai akhir. Hasil evaluasi menunjukkan bahwa peserta sebelum adanya penyuluhan 75 % mengetahui peranan hutan mangrove meningkat menjadi 100 %, sebelum penyuluhan masih ada sekitar 10 % peserta yang belum mengetahui ciri-ciri benih atau buah matang menjadi 100 % setelah penyuluhan. Sebelum kegiatan hanya 80 % peserta yang mengetahui bahwa perlu memilih buah yang bebas hama menjadi 100%. Peserta yang sebelum pelatihan masih ada sekitar 30 % tidak mengetahui dampak kalau bibit putus akarnya waktu penanaman mejadi 95 % mengetahui dampak yang ditimbulkan. Peserta yang sebelumnya masih ada yang tidak tau (10 %) dampak penanaman saat gelombang besar menjadi 100 mengetahui. Semua peserta (100%) di akhir kegiatan pengabdian mengaku kegiatan pengabdian bermanfaat. karena masih ada hal-hal penting yang belum kami pahami.
Relationship of Total Oil Content and Planktonic Diatoms Abundance in the Coastal Waters of Lukit Kepulauan Meranti Yuliani, Riza; Siregar, Sofyan Husein; Amin, Bintal
Jurnal Perikanan dan Kelautan Vol. 29 No. 3 (2024): October
Publisher : Faculty of Fisheries and Marine, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.29.3.343-349

Abstract

This research was conducted in January 2024 in the waters of Lukit, Merbau District, Meranti Islands. This study aimed to analyze the total oil content and abundance of planktonic diatoms and determine the relationship between total oil content and abundance of planktonic diatoms. This study used a purposive sampling method. The sampling location was divided into three stations with three sampling points. Station 1 is in the oil company jetty area, Station 2 is in the crossing port area, and station 3 is far away from residential areas. The results of the analysis of total oil content was 0,252 ppm. The highest oil content was found at station 2, which was 0,274 ppm, and the lowest oil content was found at station 3, which was 0,222 ppm. The results of the planktonic diatom abundance ranged from 75 – 187,5 ind/L. The highest abundance was found at station 3, which was 166,67 ind/L, and the lowest was found at station 2, which was 79,17 ind/L. The results of the simple linear regression test obtained the equation y= 177,77-225,55x with the value of R² = 0,1321 and the correlation coefficient r = -0,36, which shows that higher total oil content will cause a decrease in the abundance of planktonic diatoms
Co-Authors ', Thamrin ', Zulkifli AA Sudharmawan, AA Achmad Mulyadi Adam Dionfriski Ade Riccard Simatupang Adriana, Alysa Adrizal, Taufik Afrizal Tanjung Albahri Albahri Alvin Natali Andi Darlianto Anisaldi Anisaldi Anita, Sofia Antoni Antoni Aras Mulyadi Ardhi Yusuf Ardian Dwi Pratama Ardiansyah Hamid Arief Mubyarso Aslim Rasyad Asmika Harnalin Simarmata Bahri S, Aswan Bahtiar Denny Edison Belilasari Belilasari Belilasari, Belilasari Beranda, Ongki Okto Bintal Amin Bornok Silalahi Chairun Nisa Chitra Hermawan Chitra Hermawan Dalimunthe, Salmi Patima Dellarosa, Wiranda Deni Efizon Desmarina, Y. Despela, Despela Dessy Yoswati Dessy Yoswaty Devid Joehari Dewi Marni Dinda Trie K Hayati Dinda Trie K Hayati Dionfriski, Adam Dodik Ridho Nurrochmat Dudi Candra Eddy Handoko Edmond Edwar Efriyeldi, Efriyeldi Elda Nazriati Elizal, Elizal Endah Julita Eva Desy Yulina Siregar, Eva Desy Yulina Fainal Asandi Fairuzia, Putri Marwah Farid Febrianda Fathiya Hanifa Fauzan, M. Febbyolla, Selfi Anidal Febrianda, Farid Fery, Rony andes Gendraya Rohaini Ginting, T.B. Hamid, Ardiansyah Hanif, Naufal Happy Rosalina Hapsoh Hapsoh Hapzi Ali Henny Daniaty I Gusti Wayan Murjana Yasa Imam Suprayogi Ira Putra, Ira Irvina Nurachmi Jamhari Jamhari Jasril Jasril Joenathan Sarumpaet Joko Samiaji Josua Simanjuntak, Josua Lazuardi, Andika Lucky Rahman Lydia S Marpaung M. Hambali M. Hambali Manda Putra, Ridwan Marpauang, EkoRinaldi Masykur HZ Masykur Hz Megawati Hari Dwi Jayanti Mery Mery Mia Audina Mia Audina, Mia Miduk Tampubolon Mila Rosa Miswadi Miswadi Mubarak Mubarak Mubarak Mubarak Muchlis Muchlis Muchlis Muchlis Mudinillah, Adam Mufidah, Marhamah Nurul Muhammad Saroha Lubis Muhammad, Andi Syahroni Mumin Rifai Musrifin Galib Nickson Panjaitan Nila Sari Lubis Nizar Rofiki Nova Esterlita Novi Permata Sari Noviawati Riza Nugraha, Rafiq Prima Nur Arifin Nur Arifin, Nur Nurhapida Nurhapida Nurliya ' Octavia Lorensa Br Sinaga Prasiska, Yulia Puspita, Sarah Putri Wahyuni Rahmita, R. Ramadhan, A.R Rasoel Hamidy Renata, Vivien Ridwan Manda Putra Rifardi Rinaldo, Rinaldo Rinaldo, Rinaldo Rini, Yulia Sapta Riski Hambali Risqiana Dani Riza Yuliani Rizka Aprisanti Rizka Aprisanti Rizki, A. Rosa, Mila Rulen, Betty Nia Rusadi, M Dio Eigmar S.Pd. M Kes I Ketut Sudiana . Said Nazman Arif Samsir Samsir Sari, D.J. Selfi Anidal Febbyolla Selvia, Seli Shofian Nanda Adiprayoga Silaban, Santi Maria Sinaga, Octavia Lorensa Br Sirait, Juliper Parasian Sitindoan, Benni Mario K. Sofia Anita Sujianto Sujianto Sujianto Sukendi Sukendi Susiyanti. N Sutami Sutami Sutrisna Sutrisna suwondo suwondo Syafruddin Nasution Syafrudin Nasution Syahril Nedi Taufik Herman Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Trinop Sagiarti TRINOP SAGIARTI, TRINOP Trisla Warningsih Vivien Renata Wahyudi Wahyudi Wahyuni, Weni Indah Windarti Windarti Wiranda Dellarosa Yanasari, Nurry Yanti, D.H. Yosua Afrianus P Yudha Januarizki Setiawan Yulia Prasiska Yuliani, Riza Yusni Ikhwan Siregar Zahtamal Zahtamal Zientika, Zientika Zukarnaini Zukarnaini Zulfan Saam Zulkifli ' Zulkifli Zulkifli