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All Journal International Journal of Electrical and Computer Engineering (IJECE) ACTA VETERINARIA INDONESIANA Computer Engineering and Applications Journal Jurnal Sain Veteriner Signifikan : Jurnal Ilmu Ekonomi Jurnal Veteriner Jurnal Energi Dan Manufaktur Jurnal Keperawatan Indonesia Jurnal Natur Indonesia Jurnal Ners Indonesia POSITRON Jurnal Hutan Lestari Jurnal Pendidikan dan Pembelajaran Idea Nursing Journal Jurnal Natural Jurnal Kedokteran Hewan Jurnal Sains dan Pendidikan Fisika Jurnal Sains Materi Indonesia Komunikasi Fisika Indonesia Jurnal Kreatif Tadulako Online TECHNO COM Mesin JSM (Jurnal SIFO Mikroskil) Jurnal Bahan Alam Terbarukan Journal of Applied Finance and Accounting CommIT (Communication & Information Technology) Jurnal Online Mahasiswa (JOM) Bidang Ilmu Keperawatan Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Dimensi Pratama Teknik Sipil Teknik dan Ilmu Komputer Makara Journal of Technology Journal of Dentistry Indonesia Holistic Journal Of Management Research Sosioinforma Islam Futura JURNAL PERIKANAN DAN KELAUTAN Dinamika Lingkungan Indonesia RechtIdee Fakultas Ekonomi Journal of Aceh Physics Society Jurnal Medika Veterinaria Annual Research Seminar PROSIDING SEMINAR KIMIA REPOSITORY KIMIA Sosio Konsepsia JURNAL PENDIDIKAN KEPERAWATAN INDONESIA Journal Ilmu KOMUNIKASI UHO JOURNAL ONLINE OF PHYSICS Al-Ta'rib: Jurnal Ilmiah Program Studi Pendidikan Bahasa Arab IAIN Palangka Raya JURNAL KIMIA MULAWARMAN The International Journal of Tropical Veterinary and Biomedical Research Perspektif Jurnal Ilmiah Mahasiswa Veteriner Jurnal Penelitian Pembelajaran Fisika Indonesia Chimica Acta ISLLAC : Journal of Intensive Studies on Language, Literature, Art, and Culture JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Titian Ilmu: Jurnal Ilmiah Multi Sciences Computatio : Journal of Computer Science and Information Systems JISPO Jurnal Penelitian Sains JST ( Jurnal Sains Terapan ) MEDIA BINA ILMIAH BIOEDUSCIENCE Indonesian Journal of Chemistry Machine : Jurnal Teknik Mesin JURNAL ATOMIK Paedagoria | FKIP UMMat Jurnal Sylva Lestari al-fikrah: Jurnal Manajemen Pendidikan AKMEN Jurnal Ilmiah CYBERNETICS JURKAMI : Jurnal Pendidikan Ekonomi Jurnal Ilmu Peternakan dan Veteriner Tropis (JIPVET) Jurnal Pemikiran dan Penelitian Pendidikan Matematika (JP3M) Jesya (Jurnal Ekonomi & Ekonomi Syariah) International Conference on Mathematics and Science Education of Universitas Pendidikan Indonesia Komposisi: Jurnal Pendidikan Bahasa, Sastra, dan Seni Prosiding SAKTI (Seminar Ilmu Komputer dan Teknologi Informasi) Jurnal Karya Abdi Masyarakat JuSiTik : Jurnal Sistem dan Teknologi Informasi Komunikasi J-Dinamika: Jurnal Pengabdian Kepada Masyarakat JURNAL KAJIAN TEKNIK MESIN Koneksi Quality: Jurnal Kesehatan Business Management Journal Program Studi Manajemen Jurnal Ilmu Manajemen: Profitability
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Journal : PROSIDING SEMINAR KIMIA

PEMBUATAN DAN PEMANFAATAN SILIKA DARI PASIR PANTAI SEBAGAI BAHAN PEMUCAT UNTUK MENURUNKAN KADAR ASAM LEMAK BEBAS PADA CPO (CRUDE PALM OIL) Nirwana, Nirwana; Alimuddin, Alimuddin; Erwin, Erwin
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2018
Publisher : PROSIDING SEMINAR KIMIA

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A study on the manufacture and utilization of silica from coastal sand as a pale ingredient to lower free fatty acid levels has been conducted. The present invention includes sample preparation, sodium silicate (Na2SiO3), silica gel formation, silica gelation and Crude Palm Oil (CPO) test result of bleaching. The results showed that the silica of coastal sand was potential as a crude palm oil (CPO) ingredient with the ability to decrease the free fatty acid and color brightness, on the addition of 1 gram of silica obtained result of free fatty acid content analysis is 24,35 % with decreased color brightness of 0,27% and on the addition of 2 gram of silica obtained result of free fatty acid content analysis is 42,49 % with decreased color brightness of 2,8%.  Keywords: Sand Beach Sebatik Island, Silica, Bleaching, Crude Palm Oil (CPO), Free Fatty Acid Levels.
UJI TOKSISITAS DENGAN METODE BSLT EKSTRAK KASAR KULIT BATANG TAMPOI (Baccaurea macrocarpa) Day, Diasttri Wahyu Rahmah; Erwin, Erwin; Astuti, Winni
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2018
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Baccaurea macrocarpa (Tampoi) merupakan genus Baccaurea termasuk tumbuhan yang berbuah. Secara tradisioanal daun dan kulit batangnya dipergunakan sebagai bahan obat. Penelitian ini bertujuan untuk mengetahui tingkat toksisitas dari ekstrak kulit batang Tampoi. Metode yang digunakan meliputi ekstraksi dan partisi, uji fitokimia, Brine Shrimp Lethality Test (BSLT) ekstrak dan fraksi-fraksinya. Hasil uji fitokimia terhadap ekstrak kasar alkaloid, triterpen, fenol and flavonoid. Hasil uji toksisitas ekstrak kasar termasuk katagori tidak beracun dengan nilai LC50 19364,71 ppm.   Keywords : Baccaurea macrocarpa, tradisional, Toksisitas, BSLT.
SKRINING FITOKIMIA DAN UJI TOKSISITAS PADA DAUN TERAP (Artocarpus elasticus) DENGAN METODE BRINE SHRIMP LETHALITY TEST (BSLT) Nastiti, Mahardika; Erwin, Erwin; Kusuma, Irawan W.
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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A research to find out the secondary metabolite compounds contained in theleaves of terap (Artocarpus elasticus) and its toxicity of terap leavesextract has been done by using Brine Shrimp Lethality Test (BSLT) method. Toxicity was conducted for prawn Artemia salina Leach of 48 hours age. Toxicity data were obtained from Lethal Concentration 50% (LC50) with percentage of death of prawn larva and counted by probit analysis SAS. The result showed that 5thn-hexane fraction was more toxic than another extract with LC50 values 71.887 ppm and furthermore, the bioactive compound of 5thn-hexane fraction was probably to be either steroid compound.   Keywords: Artocarpus elasticus, Phytochemical, Toxicity
UJI FITOKIMIA DAN UJI TOKSISITAS EKSTRAK KULIT KAYU TERAP (Artocarpus odoratissimus Blanco.) DENGAN METODE BSLT (BRINE SHRIMP LETHALITY TEST) Arsindho, Yoarga; Erwin, Erwin; Kusuma, Irawan W
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
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Abstract

The phytochemical tests and toxicity test extract from stem bark of terap (Artocarpus odoratissimus Blanco) have been researched. The method used is Brine Shrimp Lethality Test (BSLT), the ethanol and n-hexane extract of this bark terap (A. odoratissimus) were tested. The results showed that the secondary metabolic component from terap (A.odoratissimus)was toxic. The LC50 from the extract of terap (A. odoratissimus) that dissolved in Ethanol was 82.0008 and The LC50 from the extract of terap (A.odoratissimus) that dissolved in n-Hexane was 383.3533   Keywords:Artocarpus odoratissimus, BSLT (Brine Shrimp Lethality Test), LC50
SKRINING FITOKIMIA DAN AKTIVITAS ANTIOKSIDAN EKSTRAK METANOL KAYU BATANG MENTAWA (Artocarpus anisophyllus Miq.) Pabita, Octariana Toding; Erwin, Erwin; Kusuma, Irawan Wijaya
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2019
Publisher : PROSIDING SEMINAR KIMIA

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Penelitian mengenai uji fitokimia dan aktivitas antioksidan pada ekstrak batang Mentawa (A. anisophyllus Miq.) telah dilakukan. Penelitian ini bertujuan untuk mengetahui kandungan senyawa metabolit sekunder dan nilai aktivitas antioksidan terhadap radikal bebas DPPH (2,2-diphenyl-1-picrylhidrazil) pada ekstrak metanol dari batang mentawa. Hasil uji fitokimia menunjukkan bahwa ekstrak metanol pada batang mentawa (A. anisophyllus Miq.) mengandung golongan senyawa flavonoid, fenolik dan triterpenoid dan hasil uji aktivitas antioksidan menunjukkan nilai IC50 ekstrak metanol yaitu 34.58 ppm. Hasil pengujian dengan menggunakan metode DPPH menunjukkan bahwa ekstrak kasar dikategorikan sebagai antioksidan sangat kuat.   Kata Kunci : Mentawa, fitokimia, antioksidan, dan DPPH 
UJI FITOKIMIA, TOKSISITAS (BRINE SHRIMP LETHALITY TEST) SERTA ANTIOKSIDAN KULIT BATANG TERAP (Artocarpus elasticus reinw) DENGAN METODE DPPH (2,2-diphenyl-1-picrylhidrazyl) Fauzi, Maulidya Hafsari; Erwin, Erwin; Kusuma, Irawan W.
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Phytochemical test, the mortality of larvae shrimp (Brine Shrimp Lethality Test) and antioxidant activity test of secondary metabolites stem bark of Terap (Artocarpus elasticus reinw) by several of method such as extraction, phytochemical test, the mortality of larvae shrimp (Brine Shrimp Lethality Test) and antioxidant activity test. Based on the result of Brine Shrimp Lethality Test was analyzed using SAS probit analysis to know the value of Lethal Concentration 50 % (LC50), Brine Shrimp Lethality  test result that the fraction of ethyl acetate has the highest toxicity with LC50 value obtained 153,3788 ppm. Based on the results of antioxidant activity test that ethanol extract has the highest antioxidant activity with IC50 value obtained at 70.59 ppm. Based on the Phytochemical test, the mortality of larvae shrimp (Brine Shrimp Lethality Test) and antioxidant activity test , it was obtained secondary metabolite compound of phenolic active in stem bark of Terap.   Keywords: Terap (Artocarpus elasticus reinw), Brine Shrimp Lethality Test, Antioxidant Activity test.
PEMBUATAN BRIKET ARANG DENGAN MEMANFAATKAN LIMBAH DARI TEMPURUNG BIJI KETAPANG (Terminalia catappa) DAN TEMPURUNG BIJI KEMIRI (Aleurites molucanna L. Willd.) Hutagalung, Sandi Christopher; Erwin, Erwin; Panggabean, Aman Sentosa
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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Tropical almond (Terminalia catappa) seed shell and candlenut (Aleurites molucanna L. Willd) seed shell  has a huge potential as a source of alternative energy in the manufacture of coal briquettes. This research has been conducted using method of carbonization, mixing, molding, drying and then the briquettes quality was analyzed with test parameters namely inherent moisture content, ash content, volatile matter content, fixed carbon content and calorific value. The results showed that mixture of tropical almond seed shell and candlenut seed shell can be used as briquettes. In this study, the best quality briquettes with mixture variation of tropical almond seed shell and candlenut seed shell was obtained in mixture variation of 25% tropical almond seed shell and 75% candlenut seed shell with calorific value was 5043 cal/gr, fixed carbon content was 47.22%, volatile matter content was 25.96%, ash content was 4.7% and inherent moisture content was 22.11%. But 100% candlenut seed shell also have a good quality briquettes with calorific value was 5098 cal/gr, fixed carbon content was 47.23%, volatile matter content was 28.44%, ash content was 4.24% and inherent moisture content was 20.08%.   Keywords: Briquette, Carbonization, Calorific Value, Terminalia catappa, Aleurites molucanna L. Willd
PENAPISAN BAKTERI TERMOFILIK PENGHASIL AMILASE DARI SUMBER AIR PANAS DONDANG DI KECAMATAN MUARA JAWA A. A. R, Muhammad Taufik; Astuti, Winni; Erwin, Erwin
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Amylase producing bacteria have been isolated from Dondang hot springs in Muara Jawa sub-district based on clear zone. Dondang hot springs became the site of the discovery of thermostable bacteria. Obtained 1 selected isolate showed amylase activity with the formation of clear zone around the colony on solid media containing 1% starch. Based on the morphology and physiology tests the selected isolates showed the genus Bacillus sp. The results showed total protein concentration of crude extract of enzyme from amylase producing bacteria isolate that is 2, 4068 ?g /mL.   Keywords: Thermophilic bacteria, amylase, clear zone, protein concentration.
UJI FITOKIMIA, TOKSISITAS DAN AKTIVITAS ANTIOKSIDAN PADA EKSTRAK BATANG BAKAU HITAM (Rhizophora mucronata Lam.) Margarettha, Sitorus Anna; Erwin, Erwin; Alimuddin, Alimuddin
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2019
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Penelitian tentang uji fitokimia, toksisitas dan aktivitas antioksidan ekstrak kasar batang bakau hitam (Rhizophora mucronata Lam.) telah dilakukan. Penelitian ini dilakukan untuk mengetahui senyawa metabolit, dan aktivitas antioksidan pada ekstrak kasar metanol. Metode yang digunakan diantaranya uji fitokimia dilakukan dengan uji warna, uji toksisitas dilakukan dengan metode Brine Shrimp Lethality Test dan uji aktivitas antioksidan dengan menggunakan metode DPPH. Hasil uji fitokimia menunjukkan ekstrak kasar batang bakau hitam mengandung senyawa flavonoid, fenolik dan triterpenoid. Pada hasil uji toksisitas dari ekstrak kasar metanol memiliki nilai LC50 sebesar 420,9017 ppm dan hasil uji aktivitas antioksidan dari ekstrak kasar metanol memiliki nilai IC50 sebesar 119,432 ppm. Berdasarkan data tersebut dapat disimpulkan ekstrak kasar metanol dengan nilai LC50 memiliki tingkat toksisitas yang toksik dan nilai IC50 memiliki kekuatan aktivitas antioksidan sedang.   Kata Kunci : Rhizophora mucronata Lam., Metabolit Sekunder, Brine Shrimp Lethality Test, Antioksidan, DPPH.
PEMBUATAN DAN KARAKTERISASI SULFONAT TERIMPREGNASI PADA SILIKA DARI ABU SEKAM PADI (RICE HUSK ASH) Pasuluran, Nirwanto; Erwin, Erwin; Hindryawati, Noor
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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Co-Authors . Amiruddin . Rusli A. A. R, Muhammad Taufik A. A. R, Muhammad Taufik Abdul Harris Abdul Rahim Abdul Rohman Afif Bintoro Agung, Putra Sunan Ahmad Fali Oklilas Ahmad Heryanto, Ahmad Ahmad Siswantara, Ahmad Airlangga, Liovan Aji Ajib Susanto Al Azhar Alexander A. S. Gunawan, Alexander A. S. Alexander Richard, Alexander Alfian Noor Alimuddin Alimuddin Aman Sentosa Panggabean Amiruddin Amiruddin An Nisa, Redda Andayani, Ratih Diah Anderes Gui, Anderes Andri Wijaya Andy Andy Anjiu, Leo Dedy Anjora, Septiana Antonius Surbakti Antoro, Marwin Didik Ari Pristiana Dewi Ariusmedi, Ariusmedi Arman Sayuti Arneliwati, Arneliwati Arsindho, Yoarga Arsindho, Yoarga Asdi Agustar Asmayanti, Andi Nur Astuti, Yula Atmoko, Doni Prio Azhari Azhari Badillah, Clara Fin Bayhakki Bayhakki, Bayhakki Bohari Yusuf budianto panjaitan Budiman, Edy Bukhory, M Ilham Al Burhanuddin, Ilham Chairul Saleh Christina, Mega Verta Daniel Daniel Darmizah, Zihni Sharfina Day, Diasttri Wahyu Rahmah DENI NOVIANA Deris Stiawan Desvita, Yenny Dewi Fatma Dewi, Tri Isyani Tungga Dian Masyitha Djafrinur, Djafrinur Djau, Nurmila Sari Djihan Ryn Pratiwi, Djihan Ryn Effendi Effendi Eka Srimulyati, Eka Eko Harry Susanto Ekowati Handharyani Elly Nurachmah Elly Sudarty, Elly Elsavira, Radhika Emilia Dewiwati Pelipa, Emilia Dewiwati Erina Erina Erlina, Junia Etriwati, . Etriwati, Etriwati Eva Marliana, Eva Eviliony, Eviliony Fadillah Irwansyah, Fadillah Fathra Annis Nauli Fauzi, Maulidya Hafsari Fauzi, Maulidya Hafsari febriyanti, eka Firman, H Fitri, Arni Diana Fitri, Yanuari Eka Florensa Rosani Purba frastantie, Dilla Frengky, Frengky Gaanty Pragas Maniam, Gaanty Pragas Gamya Tri Utami Gohzali, Hernawati Gunanti Gunanti, Gunanti Gunawan Wibisono Hairah, Ummul Hamdan Hamdan Hamdan, Suhaivi Hamdani Hamdani Hamsina Hamsina Harison, Alya Nathasya Hariyani, Fifi Harjum Muharam Hasneli, Yesi Helmi, T. Zahrial Henri D. Henri, Henri D. Hidayat Asta, Hidayat Hidayat Hidayat Hikmat, Yusiran Husnan Husnan Hutabarat, Utami Maulina Hutagalung, Sandi Christopher Hutagalung, Sandi Christopher Ibnu Utomo Ichsan, Tahayati Imam Imam Irawan W Kusuma, Irawan W Irawan Wijaya Kusuma, Irawan Wijaya Isna?im, Isna?im Jendrius Jendrius Jimmy G. Jimmy, Jimmy G. Jones, Fidella Diva Jumaini, Jumaini Juniar Ernawaty Khoiri, Kms. M. Shofuan Kiyatmoko, Tomi Konadi, Alfian Krisman Krisman, Krisman Kurniawan, Rizal Eko Kusuma, Afif Yuda Kusuma, Irawan W. Kusuma, Irawan W. Laili, Miftachul Larasati, Indah Kurnia Laraswati, Yeni Lavintang, Mutiara Lazuardi, Auzan Leo Satya Phangestu, Leo Satya Ligaya Ita Tumbelaka Liniawati, Septi Roro M Dirhamsyah Maharani, Anizza Dyah Kartika Maher Denny, Hanifa Mardiana Mardiana Marganingsih, Anna Margarettha, Sitorus Anna Marinda, Hening Ayu Maulia, Rahmi Maulina, Sheli Maulizar, Ria Mokhamad Fakhrul Ulum Monita Olivia morow, meutya silviana Muhammad Adam, Muhammad Muhammad Fachrurrozi Muhammad Fajri Muhammad Hasan Muhammad Isa Muhammad Syaipul Hayat Mulyadi Adam, Mulyadi Mustafa Sabri Mutarobin, Mutarobin Muttaqien Muttaqien, Muttaqien Nainggolan, Maria Sonya Nauli Nasarudin, Nasarudin Nastiti, Mahardika Nastiti, Mahardika Nawawi, Khabib Niniarty Z. Djamal, Niniarty Z. Nirwana, Nirwana Noor Hindryawati, Noor Nora Vera Amanda, Nora Vera Novalia, Irma Noviyanti, Dea Sella Nunuk Hariani Soekamto Nur, Syofyan Nuraedah Nuraedah Nurchayati, Sofiana Nurchayati, Sofiana Nurjanah, Laras Azrisa Nurul Huda Nuryadi, Dedi Nuzul Asmilia Nys. Arfa Onggo, Jeffrey Pabita, Octariana Toding Pasuluran, Nirwanto Pasuluran, Nirwanto Permana, I Pratiwi, Noviara Sindi Prima, Benny Puspita, Putri Vanera Putra, I Gusti Agung Ngurah Arphan Eka Putra, Sandra Utama Putri, Arum Cantika R, Muh Nur Raden Roro Soesatyoratih RAHMAT GUNAWAN Rahmawati Rahmawati Ramadhana, Cut Erika Ramadhani, Riski Vebryanti Ramalis, T R Ramalis, TR Ramandhan, Akbar Ramandhan Razali Razali Reza Firsandaya Malik Reza, Reza Rilla Gantino Rinidar Rinidar, Rinidar Riri Novayelinda Robert Faber Rosmaidar Rosmaidar, Rosmaidar Rosmiati Rosmiati Rossi Passarella rusita rusita Rusli Rusli Rustaman, N Y Rustaman, NY Safitroh, MHD. Ali Sahuri Lasmadi Saktioto Saktioto, Saktioto Salam, Abd salomo, Salomo Salomo, Salomo Saparudin Saparudin Sari, Reny Pamela Sariningrum, Arlita Sarmayanta Sembiring Satria, Neti Sekarsari, Rita Sella, Nur Sembiring, Anatasya Siallagan, Sitaria Fransiska Sikumbang, Dinda Jasmal Silaban, Chiristianly Yeri Sinta, Dwi Sitepu, Anta Rezky Siti Anisatur Rofiqah, Siti Anisatur Siti Rahmalia Sitinjak, Tumpal J. R Sitra, Elian Sofyan Zainal Sofyan, Suhikma Sri Angky Soekanto Sri Maryani Sri Yuliati Sudirman Sudirman Sugandi Yahdin Sugito Sugito Suib Awrus Sukino, Arief Sunario Megawan Sunit Hendrana Susanto, Ari Murti Susilawati, Tri Susita, Farida Sutarno Sutarno Syafitri, Syafitri Syafruddin Syafruddin Syahadat, Rachmat Syaibah, Syaibah Syakbaniah Syakbaniah, Syakbaniah Syarief, Firman T Armansyah, T tasmi, cut nila Tasruddin Tasruddin, Tasruddin Tejawati, Untari Teuku Reza Ferasyi Thoha Firdaus, Thoha Tjodi Harlim Tresna Soemardi, Tresna Tri Novianti, Tri Triva Murtina Lubis Ulfa, Ruvida Umbu, Dany Ummu Balqis Usman Malik Usman Usman Utami, Ghiena Rifka Utari, Heta Vivi Oktaviani Wahdana Kusuma Sari, Wahdana Kusuma Wahid Gunarto, Wahid Wasisto Utomo Widodo Budiharto Widya Sari Wijanarto Wijanarto Winni Astuti, Winni Wisdiarman, Wisdiarman Woferst, Rismadefi Wolfgang Straka Wong Foek Tjong Wongso, Calista Wulandari Saputri, Wulandari Wulandhari, Ayu Yanuar Yanuar, Yanuar Yulia Irvani Dewi Yulia, Wita Yuliani Setyaningsih YUNALDI, HEFRI Yurika, Yurika Yurnalis Yurnalis Yusmeri, Yusmeri Zoelkaranain, M Dicky Zuhendri, Zuhendri Zulfan Saam Zuliani, Nur Endah Zulkarnaen Zulkarnaen Zulnuraini, Zulnuraini Zuraidawati Zuraidawati, Zuraidawati