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Characterization of Chitosan Isolated from Shrimp Shell Waste and Its Ability to Preserve White Tofu Bahri, Syamsul; Fadilah, Nur; Hanafi, Muhammad
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i2.6744

Abstract

The research has been conducted to characterize chitosan isolated from shrimp shell and also to determine the ability of chitosan in preserving organoleptic parameters of white tofu. Isolation of chitin was performed through two stages, namely deproteination and demineralization. Chitosan is obtained by adding NaOH on chitin in deacetylation process. The obtained chitosan was characterized using several methods. Molecular weight of obtained chitosan is 15 kDa with the degree of deacetylation is 80.3%, whereas analysis of water level, ash, and protein content are 0.3%, 32.1%, 3.79% in consecutively. The optimum concentration to preserve organoleptic parameters of white tofu is 15 minutes in 1% of chitosan.
Method for Measuring Damage to Viability and Morphology of Spermatozoa in Experimental Animals After Exposure to Cigarette Smoke Muksin, Yufika Dewi; Mahrus, Mahrus; Bahri, Syamsul
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i2.6876

Abstract

Smokers in Indonesia are ranked first in the world and the biggest cause of death. Free radicals contained in cigarette smoke cause condensation of the structure of the genetic material of sperm cells and lead to sperm cell death (apoptosis). The aim of the research was to determine the effect of cigarette exposure and its interactions on the quality of spermatozoa in experimental animals. This research is a laboratory experiment with a Completely Randomized Factorial Design. The samples in this study were 60 males of the Balb/C strain which were divided into 5 treatment groups. Each treatment group was given concentrations of red dragon fruit peel extract including 0%, vitamin C, 50 µg/mL, 500 µg/mL, and 5000 µg/mL and were exposed to cigarette smoke. Analysis of research results used the Two Way ANOVA test at a significance level of 0.05. The results of the study showed that there was an effect of exposure to cigarettes and administration of red dragon fruit peel extract on the sperm quality of mice. The highest exposure to cigarette smoke was given to red dragon fruit peel extract in terms of viability of 89% and morphology of 93.33%. Administration of red dragon fruit peel extract reduced the effect of exposure to cigarette smoke on the viability and morphology of mice.
Preliminary Test of the Sensitivity of Colletotrichum spp. to Binahong Ethanol Extract (Anredera cordifolia) Aminatuzzifah, Putri; Bahri, Syamsul; Sedijani, Prapti
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i4.7840

Abstract

The agricultural sector in Indonesia, especially the horticultural subsector, plays an important role in the economy and food security. One of the leading commodities in horticulture is the chilli plant (Capsicum annuum), which is very susceptible to anthracnose disease caused by the fungus Colletotrichum spp. This study aims to test the inhibitory activity of ethanol extract from binahong (Anredera cordifolia) leaves against the growth of Colletotrichum spp. fungus as an alternative environmentally friendly disease control. The research was conducted using a completely randomised design (CRD) with variations in extract concentrations of 0%, 0.5%, 1%, 1.5%, 2%, and 2.5%, each of which was tested three times. The results showed that 2.5% concentration of binahong leaf extract produced the highest inhibitory activity of 70%, while 0.5% concentration showed 56% inhibition. This inhibitory activity was categorised as strong. ANOVA analysis showed significant differences between treatments (p < 0.05). These findings demonstrate the potential of binahong leaf extract as a biofungicide in the control of anthracnose disease in chilli plants, which may contribute to more sustainable and environmentally friendly agricultural practices.
Capability of Ketip Banana (Musa paradisiaca Forma typiaca) Peel Ethanol Extract in Reducing Sperm Abnormality Number of Mice (Mus musculus) Following Tobacco Smoke Exposure Bahri, Syamsul; Setiadi, Dadi; Lestari, Tri Ayu; Ilmi, Muhamad Yazid Mizanul; Saputra, Jagat
Jurnal Biologi Tropis Vol. 24 No. 1b (2024): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1b.8223

Abstract

Antioxidants are important in maintaining body health as their ability in binding free radicals and remove cell damaging molecules from the body. Plant-based foods are the best source of antioxidants, may contain secondary metabolite compounds such as flavonoids, phenolic acids, saponin, polyphenols and tannins. Peel of fruits sometime just become a domestic trash and pollute the environment. One of tropical fruit which is contain secondary metabolite with antioxidant properties is Ketip banana. Peel of this fruit just left a trash of domestic pollutant whereas it could be transform to become a more valuable product. The aim of this research is to study the effect of ethanol extract of Ketip banana on sperm morphology. To address this goal we applied ethanol extract of Ketip banana on male mice orally using a gavage needle following tobacco smoke exposure. Data analysis showed that tobacco smoke exposure significantly increase sperm abnormality number, but ethanol extract of Ketip banana significantly reduce sperm abnormality number. It is concluded that ethanol extract of ketip banana capable in reducing sperm abnormality number by dosage dependent manner.
Effect of Ketip Banana (Musa paradisiaca Forma typiaca) Peel Ethanol Extract on Sperm Viability of Mice (Mus musculus) Following Cigarette Smoke Exposure Bahri, Syamsul
Jurnal Biologi Tropis Vol. 24 No. 1b (2024): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i1b.8249

Abstract

Tobacco smoke contains more than 4000 kinds of constituents, including nicotine, tar, carbonic monoxide, polycyclic aromatic hydrocarbons, and heavy metals. Because of the complexity of tobacco smoke components, the toxicological mechanism is notably complicated. Most studies have reported reduced semen quality, reproductive hormone system dysfunction and impaired spermatogenesis, sperm maturation, and spermatozoa function in smokers compared with nonsmokers. Many studies have reported plant tissue contain secondary metabolites such as saponin, terpenoid, alkaloid, and flavonoid with antioxidant properties. Tropical fruit species that is known rich antioxidants content is banana, and one cultivar  banana is Ketip. The aim of this research is to study the effect of Ketip banana peel  ethanol extract on sperm viability of mice following cigarettes exposure. Data analysis showed that tobacco smoke exposure tend to dccrease sperm viability but insignificantly. Treatment with ethanol extract of ketip banana tend to reduce sperm viability. It is concluded that ethanol extract of ketip banana insignificantly increase sperm viability.
Pemanfaatan Asam dari Belimbing Wuluh (Averrhoa Bilimbi l.) Untuk Aktivator Karbon Kulit Jagung Hasil Samping Pirolisis sebagai Adsorben Minyak Jelantah Nabila, Zahratun; Bahri, Syamsul; Maulinda, Leni; Wusnah; Hasfita, Fikri
Chemical Engineering Journal Storage (CEJS) Vol. 5 No. 05 (2025): Chemical Engineering Journal Storage (CEJS)-October 2025
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v5i05.22659

Abstract

Aktivasi yaitu sebuah langkah dalam produksi karbon aktif, untuk meningkatkan diameter pori dan membuka volume pori yang tercipta selama proses karbonisasi. Senyawa asam biasanya digunakan sebagai aktivator dalam proses aktivasi karbon, meskipun zat-zat ini berbahaya dan tidak ramah terhadap lingkungan. Tujuan dari penelitian ini adalah untuk mengaktivasi karbon kulit jagung hasil samping pirolisis sebagai adsorben minyak jelantah dengan menggunakan aktivator alami asam belimbing wuluh. Ekstrak belimbing wuluh dengan konsentrasi yang bervariasi (20%, 40%, 60%, 80%, dan 100%) dan rasio karbon aktif 1/2, 1/3, 1/4, 1/5, dan 1/6 variabel tersebut digunakan untuk mengaktivasi karbon aktif kulit jagung hasil samping pirolisis. Sampel diuji untuk mengetahui kadar zat terbang, kadar air, kadar abu, analisis GC-MS, dan penggunaan adsorben pada minyak jelantah. Karbon aktif terbaik ditemukan pada konsentrasi 100%, dengan kadar air 3,051, kadar abu 3,333, dan zat terbang 5,841. Selain lebih ramah lingkungan dibandingkan aktivator kimiawi lainnya, aktivator belimbing wuluh mengandung senyawa hidrogen klorida 3,05%, asam format 1,14%, dan asam asetat 0,77% yang dapat membantu aktivasi karbon aktif, seperti yang ditunjukkan oleh analisis GC-MS terhadap aktivator tersebut. Selain itu, kadar FFA dapat diturunkan dari 1,367% menjadi 0,541% dengan menggunakan karbon aktif yang terbuat dari kulit jagung dengan aktivator belimbing wuluh.
PERANCANGAN UI/UX PADA APLIKASI LINGUALY MENGGUNAKAN MOBILE-FIRST DESIGN DENGAN METODE GOAL-DIRECTED DESIGN Syam, Ridwan Dwiyanto; Rahman, Syaiful; Bahri, Syamsul
KHARISMA Tech Vol 20 No 2 (2025): KHARISMATech Journal
Publisher : STMIK KHARISMA Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55645/kharismatech.v20i2.536

Abstract

This research aims to design an optimal user interface and user experience for language learning applications with the Mobile-First Design approach with the Goal-Directed Design method, which focuses on user goals. User needs analysis was conducted through questionnaires, surveys, and observations to develop usage scenarios. UI design focused on clarity, intuitive navigation, and simple layout, as well as visual appeal. At the UX stage, responsive design principles and user experience testing were applied to ensure that the app could be accessed properly on various devices. After the improvement of the Lingualy application, an evaluation using the System Usability Scale (SUS) resulted in an average score of 74.8, falling into the category of “Acceptable”, with a predicate of “C” and a rating of “Good”. This research concludes that user-centered UI/UX design makes language learning more effective and enjoyable, and enables proficiency without the limitations of time and place.
Penguatan Kompetensi Profesional Guru Matematika Madrasah Tsanawiyah di Kota Mataram dalam Pembelajaran Geometri Melalui Pelatihan Pemanfaatan Tools Program GeoGebra Rusadi, Tri Maryono; Satriyantara, Rio; Robbaniyyah, Nuzla Af’idatur; Abdurahim, Abdurahim; Marwan, Marwan; Syamsul Bahri; Aini, Qurratul; Irwansyah, Irwansyah; Syechah, Bulqis Nebula; Salwa, Salwa; Awalushaumi, Lailia; Alfian, Muhammad Rijal; Maharani, Andika Ellena Saufika Hakim; Kurnia, Agus; Hidayat, Malik; Kusuma, Shendy Arya; Zikri, Lalu Muhammad Faiz
Bakti Sekawan : Jurnal Pengabdian Masyarakat Vol. 5 No. 2 (2025): Desember
Publisher : Puslitbang Sekawan Institute Nusa Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35746/bakwan.v5i2.851

Abstract

This community service program was carried out with the primary objective of enhancing the professional competence of mathematics teachers at the Madrasah Tsanawiyah (MTs) level in Mataram City, particularly in the teaching of geometry. Recognizing the importance of mastering digital technology in modern mathematics learning, the program focused on the introduction and application of GeoGebra as an interactive medium for teaching geometry concepts. The activities were conducted at the Basic Computer Laboratory of the Faculty of Mathematics and Natural Sciences, Universitas Mataram, involving 18 MTs mathematics teachers. The program consisted of introducing fundamental concepts of geometry, hands-on training on the technical use of GeoGebra, and an evaluation of learning outcomes through pre-tests and post-tests. The evaluation results indicated an improvement in participants’ scores, demonstrating the effectiveness of the training. The teachers’ enthusiasm was evident from their active participation in discussions, asking questions, and exploring GeoGebra’s features during the training. The pre-test results showed that participants scored between 7 and 20, with an average of 13.56. Following the post-test, scores improved significantly, ranging from 20 to 28 with an average of 24.89. This confirms that all teachers, without exception, experienced an increase in scores. The positive impact of this program is expected to contribute to improving the quality of mathematics teaching at the MTs level.
Penguatan Konsep Matematika Berbasis Geometri pada Guru Matematika Madrasah Tsanawiyah di Kota Mataram Robbaniyyah, Nuzla Af'idatur; Rusadi, Tri Maryono; Abdurahim, Abdurahim; Lailia Awalushaumi; Alfian, Muhammad Rijal; Maharani, Andika Ellena Saufika Hakim; Satryantara, Rio; Bahri, Syamsul; Marwan, Marwan; Syechah, Bulqis Nebula; Salwa, Salwa; Kusuma, Shendy Arya; Zikri, Lalu Muhammad Faiz
Bakti Sekawan : Jurnal Pengabdian Masyarakat Vol. 5 No. 2 (2025): Desember
Publisher : Puslitbang Sekawan Institute Nusa Tenggara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35746/bakwan.v5i2.871

Abstract

Kegiatan pengabdian kepada masyarakat ini bertujuan untuk menjawab permasalahan yang dihadapi guru MTs dalam mengajarkan materi geometri dan penerapan pendekatan pemecahan masalah (problem solving). Fokus kegiatan adalah pada pendalaman filosofi dan konsep dasar geometri, serta pelatihan penerapan problem solving dalam pembelajaran. Pada pelatihan penguatan konsep geometri, peserta mendapatkan pemahaman yang lebih mendalam mengenai makna konseptual di balik sifat-sifat bangun datar dan ruang, relasi antar-teorema, serta relevansinya dalam kehidupan sehari-hari. Hasil evaluasi menunjukkan lebih dari 80% peserta mampu memahami filosofi konsep geometri dan mengaitkannya dengan strategi pembelajaran. Sementara itu, melalui pelatihan problem solving, guru dilatih untuk mengenali tahapan pemecahan masalah mulai dari memahami persoalan, merancang strategi, melaksanakan solusi, hingga merefleksi hasil. Sebanyak 70% peserta berhasil menyusun perangkat pembelajaran berbasis problem solving yang aplikatif di kelas. Efektivitas kegiatan ini juga ditunjukkan melalui hasil pre-test dan post-test, di mana seluruh peserta mengalami peningkatan pemahaman, dengan beberapa mencapai peningkatan skor hingga 75 poin. Secara keseluruhan, kegiatan pengabdian ini berhasil meningkatkan pemahaman konseptual guru terhadap geometri, keterampilan pedagogik berbasis problem solving, serta kepercayaan diri dalam mengajar matematika secara lebih bermakna dan kontekstual.
Growth And Yield of Two Varieties of Sorghum (Sorghum bicolour L. Moench) Through Rice Husk Organic Fertilizer Application Nurmi, Nurmi; Syamsul Bahri; Yundriyani; Yunnita Rahim; Mohamad Arief Azis
International Journal of Technology and Education Research Vol. 3 No. 04 (2025): October - December, International Journal of Technology and Education Research
Publisher : International journal of technology and education research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63922/ijeter.v3i04.2349

Abstract

The study aims to determine the effect of organic rice husk fertilizer on the growth and yield of sorghum plants (Sorghum bicolor L. Moench). This study used a Randomized Block Design (RBD) with the first factor being sorghum plant varieties (V) consisting of 2 levels: the Numbu variety and the Kawali variety. The second factor was rice husk fertilizer (P) consisting of 3 levels: no fertilizer (control). 25 tons ha-1 of rice husk fertilizer. and 50 tons ha-1 of rice husk fertilizer. repeated 3 times. The results of the study showed that there was an interaction between the treatment of variety type and organic fertilizer dose on the parameters of plant height. number of leaves and seed weight of sorghum planting and there was no interaction on panicle length. but singly the treatment of variety type and organic fertilizer dose did not provide a significant effect on the parameters of plant height. number of leaves and panicle length. but did provide a significant effect on sorghum seed weight. The best sorghum plant production results were found in the treatment of the Numbu variety type with an organic fertilizer dose of 50 tons ha-1.
Co-Authors ", Mardianah ", Zulkifli . Asmirah ., Zarfinal A, Muh. Awaluddin A. Besse Riyani Indah A. Gani, Subhan A. Masuku, Mustamin A. Rohendi, A. A. Wahab Jufri A.Rani, Faisal AA Sudharmawan, AA Abdillah Abdillah Abdu Mas'ud Abdul Choliq Abdul Halim Abdul Hamid Abdul Malik Iskandar Abdul Qahar Abdul Wahid Abdullah Umar, Abdullah Abdulrahman, Irzani Andi Abdurahim, Abdurahim Abdurrachman, Abdurrachman Abdurrahman, Afif Abdussamad, Zulkhaedir Abdussyukur Abrar, Muhammad Ifan Absa, Munzir Abu, Riski H. Achmad Hidir Achmad, Adnan Ade Ony Siagian Adha, Diyaul Adi Bejo Suwardi Adi Sumandiyar Adita, Wildhan Pratama Aditya Saputra Adnan Adnan Adnan Adnan Adnan Adoi, Armet Mexi Melser Adrie Oktavio Adriyanto Adriyanto, Adriyanto Adya Hermawati Afifudin, Mohammad Thezar afsari dewi, komang nonik Agam Muarif Agil Al Idrus Agil Al Idrus, Agil Al Aginta, Windy Agus Kurnia Agus Ramdani Agus Salim Agus Trisaka Agus, Muis Agustar " Agustiani, Sarifah Agustinawati, Agustinawati Agustiningsih, Maulina Agustinus Jarak Patandean Ahlun Ansar Ahmad Efendi Ahmad Fikri Ahmad Fudhail  Majid Ahmad Harakan Ahmad Raksun Ahmad Raksun, Ahmad Ahmad Syahid Ahmad, Farhan Ahmad, Gufran Ahmed A Mansour, Nabel Ahyar, Mohamad Ahyar Ma'arif Ainul Mardiyah, Ainul Aisa, Nuer Akbar, Rachmat Ali Akbar, Rico Akbar, Satria Akhyar, Chairil Akmal Syafii Ritonga Akrom, Akrom Aksah Kasim Al Musanna Al Musanna Al Musanna, Al Musanna Alamsyah Alamsyah Albaar, M. 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Liwa Ilhamsyah Ilmi , Muhamad Yazid Mizanul Ilmi, Muhamad Yazid Mizanul Ilyas Ilyas Ilyas, Anshori Imam Bachtiar In'ami, Moh INDAH DEWI NURHAYATI Indah Wati Indi Azizah Nailah Indo Santalia Indradewa, Rhian Indriati Husain Indriati, Petiana Indrie Ambarsari Intan Nia Salsabila iqbal salim Iqbal, Deni Irawan, Pristanto Ria Irfan Fatoni Irfan Faturrakhman Irfansyah, Zacki Irham Irham Iriani Iriani Irma Damayanti Irma Nirmala Irmawati Br. Simamora Irpan Fito Irsyah Akhirunanda Irwan Setiawan Irwansyah Irwansyah Ishak Ishak Ishak, I Islamiyah Islamiyah, Islamiyah Ismail, Imran Isnaeni, Diah Mutiara Isnaini, L. Ahmad Tijani Istiqomah Istiqomah ISWAHYUDI ISWAHYUDI Iwan, Muhammad izmy alwiah musdar Jaelan Usman, Jaelan Jalaluddin Jalaluddin Jalaluddin Jalaluddin Jamaluddin Janariah, Muhammad Luthfie Januar Kulsaputro Januarni, Baiq Wini Jesika Pionauli Sitorus Jesika Sitorus Jhoni Hidayat Jodding, Muhammad Ali Johannes Jefria Gultom, Johannes Jefria Joice Stefanie Ginting Jonatan, Silvester Jovan Morientes Nigel Joys Andrean Mardohar Sitanggang Juanda, Boy Riza Judith Bryan Leonard Sie Juharni, Juharni Juli Anton Amin juliana, santi Julianti, Rika Jullimursyida Jumadi Jumadi Jurniati, Jurniati Juspriyanti Purba Kadir, Adelita Alfitrah S.A. Kamar, Iqbal Kamiludin Ramadhan Kananlua, Paulus Suluk Kardiyan " Kardo, Jendrianus Karima, Maulidia Kartika Sari Kartika Sari Kasliono Kasliono Kasmadi Kasmadi Kemesrar, Mikel Khaerati Khaerati, Khaerati Khairuddin Khairuddin - Khairul Amali Khairul Anshar Khairul Anshar Khairunnisa, Zalikhah Khalida Utami Khaliq Khaliq Kharismawati, Ziendy Khasanah, Midhatul Khojana Hasan Khojanah Hasan, Khojanah Kholilah Yuniar Nasution Khudri, Nur Sa'adah Kifayah Amar Kifayah Amar Kinayah, Siti Adila Kiwang, Amir S Kiwang, Amir S. 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Nelviana R.A. Widyanti Diah Lestari Rafika Hamda Rahayu Puji Suci Rahayu, Anggi Sri Rahayu, Putri Rahayu, Yessi Rahmad Husein Rahmadani, Fachriah Nur Rahmadany, Savitri Rahman, Dedi Irawadi Rahman, Hafizur Rahman, Ifal Rahman, Muhammad Akbar Aditya Rahman, Nurauliah Rahmaniar Rahmaniar . Rahmat Hidayat Rahmat Hidayat Rahmatun Nisa, Rahmatun Rahmi Hidayati Rahmi, Delfi Rahmiyati Rahmiyati Raja Sungai Simbolon Raja Tommy Chandra I Rajagukguk, Intan A Ramadhan, Fahri Ramadhan, Hikmal Maulana Ramadhan, Naufal Gumilang Ramadhani, Anastasya Ramadhani, Maghfirah Ramli " Ramli, Syahrur Rangkuti, HM Affan Rani Adha Nisaq Raodah, Siti Ratika Nengsi Ratiyah, - Raulina , Raulina Rayes, Putri Rahmasari Razaq, Yusuf Rehulina Tarigan Resdati Reski, Muhammad Ressa, Nurmiyati Resti Resti Retnari Dian Mudiastuti Retnowulan, Sri Rahayu Retwan, M.Alif Alzahy Reva Angelina Reza Eka Putra, Reza Eka Reza, Andi Ria Valentine Angela Manalu Riau Rizki Harahap Richard Semuel Waremra Rick Hunter Simanungkalit, Rick Hunter Ricki Sastra Ridha , Risky Rina Dara Rini Mastuti Rini Oktaviani Rio Satriyantara Rio, Malvandy Alfaulus Rizki Rio, Malvandy Alfaulus Rizki Riris Nainggolan Riscitta Ogilvie Hubertus Sinaga Risdayati, Risdayati Risky Ridha Rismawati Ristati Ritonga, Renanda Pradila Riyadhsyah, Riyadhsyah Riza Bahtiar Sulistyan Riza Juanda, Boy Riza Nazlianto Rizka Mulyawan Rizka, Afinna Septa Rizqi Ms, Firman Thoha Rizqi, Firman Thoha Robbaniyyah, Nuzla Af'idatur Robbaniyyah, Nuzla Af’idatur Robi Armilus, Robi Rohantizani, Rohantizani Rokhayati, Umbang Afif Rosa, Irene Via Dollo Rosalia, Popy Rosmaiti Rosmaiti Rosmalina Hanafi Rosmawaty Harahap Rosnani Rosnani Rossalia, Kusila Meyrin Royani, Ahmad Rozanna Dewi Rubiyatna Sakaroni Rusdiah Rusdiah Rusliana Muhamad Saleh, Erna Rusydi Rusydi Abubakar Rusydi Rusydi Ruth Manurung S, Alif Maulana Sabila, Ghaitsa Zahira Sabrina Wandani Hutabarat saepudin, udin Safrizal Safrizal Safrizal Sahar, Dian Pratiwi Sahbela " Said Ridho Amal Saidi, Hendra Saifuddin Muhammad Jalil Saifuddin Saifuddin Saifuddin, S. Saiful Mahdi Sakaroni, Rubiyatna Sakti, Fajriani Saleh, Erna Rusliana M. Salim, Muhammad Alfis Salju Salman Ahmad, Salman Salsabila, Aljannati Salsabila, Amanda Salsah Br. Nainggolan Salwa Salwa Samosir, Rebeca Samsul Hadi Sandana, Stefani Tasik Sandang, Vonny Santi, Andi Santio, Cantika Putri Permatasari SANTOSO, R Tri Priyono Budi Santoso, R. Tri Priyono Budi Sapta Asmal Saputra Hasibuan, Rizky Saputra, Dheo Saputra, Fachri Eka Saputra, Iwan Saputra, Jagat Saputra, M. Azmi Saralena Manik Sari, Erna Ratna Sari, Gando Sari, Leny Permata Sari, Mei Indah Sari, Mira Delita Satria Ediyanto Satria Rahmaddan Satriani Satriani Satriani Satriawan, Mahfud Satriawansyah, Arjuna Satrio Rachmazan Satryantara, Rio Saud, Nur Fazri Sayuti M, Muhammad Sayuti M., Muhammad Sayuti, Muhammad Seli Novianna Brutu Sembhodo, Abimanyu Tuwuh Sepriandi " Serang, Palerias Sesa, John R. Setiawati Setiawati Sharon, St. Salmah Shinta Cahyana Putri SHINTA K, DYAH Shinta Melina Sidabutar Shorayasari, Susi Siahaan, Theresia Sibala, Evisanty Silviana, Adella Silviyanti, Tgk Maya Simamora, Aprido. B. Simamora, Aprido.B. Simamora, Jesika Melina Simamora, Rianita Simanjorang, Anggi Veronika Simanjuntak, M. Marihot Sinaga, Basar Jenius Sinaga, Ririn Yuliana Sinta Okta Sovia Siraj Siraj Siregar, M. Fadlan Siti Aisah Ginting Siti Aja Aulia Siti Astiza. Z Siti Julaikha Siti Maimunah Siti Nurlaila Sitti Asiqah Usman Ali, Sitti Asiqah Usman Sitti Nikmah Marzuki, Sitti Nikmah Sitti Wahidah Masnani Slamet Wardana SM, Andi Mujahidil Ilman Sodik Sodik Sodik, Sodik Sopiyan Dalis Sopiyani, Nuzula Soraya Devy Sri Meutia Sri Mulyani SRI SUKMAWATI ZAINUDIN Sri Suryaningsih Djunu Sri Suyanta Sri Wahyu Juli Sri Wahyuni, Yenny St. Aminah AB Steven Nikson Sitanggang Suaib, Muhammad Ridha Suaidah Mawaddah Harahap Suciady, Kevin Joshua Sufrizal, Sufrizal Sufyan, Sufyan Sugiyanto, Seger Suhairi Suhardi Suhardi Suhardi Suhardi Suhardi Suhartono Suhendra, Riadi Suhendra, Rion Sujiati, Eva Sukma, Izza Melati Sulaiman AR Sulhatun Sulhatun Sulkarnaen, Sulkarnaen Sumangkting, Alif Maulana Sunardi Purwanda Sundari . Sundari Sundari Sundari, Ade Lina SUNDAY ADE SITORUS Suparmin Fathan Supiyati . Suryadi Suryadi Suryati Suryati Sutoyo, Ahmed Sutrisno Hadi Purnomo Syachruddin AR Syafaruddin, Baso Syafri, Syafri Syahruddin Syahruddin Syahyadi, Rizal Syaifuddin Iskandar, Syaifuddin syaifuddin syaifuddin Syaiful Rahman Syam, Nur Adela Syam, Ridwan Dwiyanto Syamsiar, Syamsiar Syamsu, Dewiana Syamsuddin Semmang Syamsul Alam, Syamsul Syamsul Arifin Syarifuddin M. Parenreng Syarifullah Bundang Sylvia Fettry E.M Syukri Syukri Syukri Syukriah Syukriah, Syukriah T. Edyansyah, T. Edyansyah Tahara, Tasrifin Taher, Dharmawaty M. 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