Article Per Year (5 Year)
p-Index From 2020 - 2025
5.581
P-Index
This Author published in this journals
All Journal Jurnal Sains dan Teknologi Jurnal Sains Materi Indonesia Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Untirta Civic Education Journal Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri Jurnal Pengabdian Magister Pendidikan IPA Jurnal Abdi Ilmu Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya GANDRUNG: Jurnal Pengabdian Kepada Masyarakat Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences International Journal Of Science, Technology & Management (IJSTM) Journal of Bioprocess Chemical and Environmental Engineering Science Abdimas Awang Long: Jurnal Pengabdian dan Pemberdayaan Masyarakat Journal of Social Empowerment Gemilang: Jurnal Manajemen dan Akuntansi Optimal: Jurnal Ekonomi dan Manajemen Smart Techno (Smart Technology, Informatic and Technopreneurship) Biner : Jurnal Ilmu Komputer, Teknik dan Multimedia AMMA : Jurnal Pengabdian Masyarakat International Journal of Economic Research and Financial Accounting Anggaran: Jurnal Publikasi Ekonomi dan Akuntansi Journal of Business Integration Competitive Jurnal Mahkota Bisnis Proceeding of The International Conference on Social Sciences and Humanities Innovation Proceeding of The International Conference on Management, Entrepreneurship, and Business
Ahmad Fadli
Unknown Affiliation
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Physics Public Health Social Sciences Transportation Other

Published : 117 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 117 Documents
Search

 5   6   7   8   9 
Uji In Vitro Hidroksiapatit Berpori Yang Dilapisi Kitosan Menggunakan Larutan SBF (Simulated Body Fluid) Dengan Variasi Penambahan Kitosan Toni Ardi; Ahmad Fadli; Silvia Reni Yenti
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

One of biological method for hydroxyapatite test is in vitro test, which is testing the material outside the system or not directly on living things. Some ways include using cell culture media, test tubes or SBF (Simulated Body Fluid) solutions. This research aims to determine the effect of variations of chitosan on the results of in vitro test of porous HA coated with chitosan. This research was carried out by synthesis CaO from cockle shells followed by synthesis HA from a mixture of CaO and NH4H2PO4 using low-temperature hydrothermal method. Porous HA is made by mixing HA, potato starch and distilled water using the starch consolidation method. A coating solution is prepared by mixing 0.75%w/v and 1.50%w/v into 2%v/v 100 ml acetic acid. The porous HA is then dipped into the solution for 60 minutes then dried at room temperature for 24 hours. The sample was then immersed in a SBF (Simulated Body Fluid) solution for 28 days. Samples were then analyzed using XRD and SEM analyzes. Apatite layers were formed on the entire surface of the samples based on SEM analysis. Samples have degree of crystallinity of 86.581%-88.067% with crystal diameter of 41.220-42.340 nm. The use of more chitosan as coating reduced degree of crystallinity and crystal diameter. Keywords: chitosan, hydroxyapatite, in vitro test, SBF (Simulated Body Fluid)
Pengaruh Suhu Dan Waku Sintering Terhadap Pembuatan Foam Glass Menggunakan Limbah Pecahan Kaca Dan Abu Terbang (Fly Ash) Dari Pabrik Sawit Luci Octaria; Ahmad Fadli; Bahruddin Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Foam glass is a material can be used as a insulation acoustic. The objective of this research is to investigate the effect of sintering temperature and time sintering on the physicalproperties of foam glass preparation from sheet glass and fly ash using dolomite as foaming agents. Slurry was made with mixed fly ash 50wt% and powder glass 50wt% incorporated indolomite 8wt% and strirred for 30 minutes; 300 rpm. Slurry was dried in oven at oven 105˚C for for 12 hours. Green bodies removed from mold and then it was sintered in the range 750, 900 and 950 oC at the furnace for 10,20,30 minutes. The effect of sintering temperature andsintering time on the shrinkage, porosity, density, compressive strength, microstructure and crystalline phases (XRD) were investigated. As the sintering temperature range 750oCthe density, compressive strength, shrinkage increased while the percentage of porosity decreased however as sintering temperature 900-950oC density and compressive strengthdecreased but percentage porosity increased. Furthermore, the sintering time increased the bulk density, compressive strength, shrinkage increased while the percentage of porositydecreased. The shrinkage, percentage of porosity, density, and compressive strength of the produced foam glass for insulation were 9,28-20,36%; 63-66%; 0,85-0,91 g/cm3; 1,53-1,69MPa; respectively. The optimum processing for producing foam glass for insulation was to use sintering temperature 900oC, time sintering 30 minutes.Keywords: foam glass; foaming agent; morphology; sintering
Kinetika Reaksi Demineralisasi Pada Isolasi Kitin Dari Limbah Ebi Yesi Afriani; Ahmad Fadli; Drastinawati Drastinawati
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Chitin is a biopolymer, used for various fields like cosmetics, biomedical, porous material, absorbent of heavy metal, and dietary. The synthesized of chitin from ebi’s waste by deproteinization and demineralization process was investigated. The aims of this research is to determine the reaction kinetics of demineralization at isolation of chitin with variables of concentration of HCl and stirring rate. The research was started by mixing ebi’s waste powder with HCl concentration of 0,2 N; 0,6 N; 1 N; 1,4 N; and 1,8 N at temperature 29°C and the stirring rate 50, 100, 150, 200, and 250 rpm in the beaker glass and completely with stirrer. The Samples were taken for 15, 25, 35, 45 and 60 minutes in amount 20 mL, then washed until neutral and filtered by a filter paper. Isolated chitin was destructed by H2SO4 and HNO3 to determine calcium carbonate content by titration of complexometry. The results show that reaction kinetic follows pseudo second order equation. Reaction rate constant increases with increasing concentration. The reaction rate in the concentration 0,2 N; 0,6 N; 1 N; 1,4 N; and 1,8 N and stirring rate 150 rpm increased from 0,003 to 0,404 min-1. But stirring rate undefined by approaching of kinetics homogenous reaction. The Range of reaction rate constant is 0,00167- 0,394 min-1.Keywords : biopolymer, chitin, demineralization, ebi’s waste, reaction kinetic.
Pembuatan Trikalsium Fosfat Berpori Menggunakan Metode Protein Foaming-Starch Consolidation Dengan Variasi Penambahan Jumlah TCP Dalam Slurry Dan Kecepatan Pengadukan Lia Yuningsih; Ahmad Fadli; Irdoni Irdoni
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Tricalcium phosphate (TCP) has been widely used as a bone substitute material and teeth because it is biocompatible and similar to the mineral structure of human bone. Porous Tricalcium phosphate (TCP) was made by protein foaming-starch consolidation method by using egg white as a pore-forming agent and starch like sago flour as the consolidator. The purpose of this research is to study the effect of stirring rate and addition of TCP in slurry on the physical, chemical and mechanical properties of porous TCP. This research was began by mixing TCP, egg whites, starch and Darvan 821 A by certain composition and then stirred for 3 hours with stirring rate of 100.150 and 200 rpm. The slurry was poured into a mold and dried in an oven at 180oC for 1 hour. Then the samples removed from the mold to produce green bodies. Afterthat, the green bodies were burned at 600 oC and followed by sintering at 1100oC with rate of 2oC/min for 2 hours. This research result shows the porosity of porous TCP bodies increased with increasing stirring rate, but the compressive strength decreased. The addition of TCP in the body was found to increase the compressive strength when the porosity decreased . The TCP with a porosity of 66.67 to 72.77 % and 0,75 to 1,08 MPa compressive strength were found at stirring rate of 100 rpm. Meanwhile, the stirring rate of 200 rpm, the TCP has a porosity from 68,13 to 76,92% obtained 0.68 to 1 MPa compressive strength. Keyword : compressive strength, egg white, porosity,tricalcium phosphate
Dekolorisasi Kitin Menggunakan Aseton Putri Rahmadani; Ahmad Fadli; Komalasari Komalasari
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Chitin is a biopolymer that can be used in the biomedical field. Chitin can be isolated from shrimp waste using chemical methods through deproteination and demineralization processes. To reduce color in chitin required decolorization stage. The purpose of this study was to study the effect of stirring rate and acetone concentration on the decolorization stage on the characteristics of chitin produced and to make mathematical modeling of carotenoid reduction from inside chitin using acetone in the decolorization stage. The research procedure begins with reducing the size of ebi waste into powder sizes. The powder was then reacted with 3.5% NaOH (deproteination), 1:10 (w / v) ratio for 2 h and stirring speed of 150 rpm. The deproteination product is reacted with HCl 1 N (demineralization), 1:15 (w / v) ratio for 1 h and stirring speed of 150 rpm. The demineralization product was decolourized using 60%, 80%, and 100% acetone, a ratio of 1:10 (w / v) at 70 ° C with a stirring rate of 0.150, and 300 rpm for 720 min. Samples were taken every 60 min increments of 5 mL, the solidified yield of the decolorization filtered and dried. The addition of carotenoids in acetone was analyzed using a UV-Vis spectrophotometer. The results showed that the increase of stirring speed and concentration of acetone, carotenoid content in the solvent also increased. The results of colorimeter test for chitin before decolorization had percentage whiteness of 53.2%, while for chitin at 100% acetone concentration with stirring rate 0 rpm and 300 rpm had a whiteness percentage of 57.9% and 70.3 %.Keywords: acetone, decolorization, carotenoid, chitin, shrimp waste
Sintesis Serbuk Hidroksiapatit Menggunakan Metode Mechanochemical Siska Priscillia Aledya; Ahmad Fadli; Zultiniar Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Hydroxyapatite (HAp) is a material that has the same structure and material composition with the main minerals of teeth and human bones so it can be used as bone and dental implants. The purpose of this study was to synthesis hydroxyapatite, determine the effect of variations in the ball sizes and the ratio of a mass of precursors to balls size of crystals and particles, and morphology of hydroxyapatite produced by the mechanochemical method. First, 0,5 gram Calcium Oxide (CaO), 0,6 gram ammonium dihydrogen phosphate (NH4H2PO4) and 10 ml distillate water with a mole ratio of Ca/P 1,67 were milled using Shaker Mill PPF UG. Two different ball sizes (3mm and 6mm) and three different PBRs (1:1,439; 1:2,878; and 1;4,318) were used in this methode. Precursor and balls were milled in milling speed 850 rpm for 6 hours with interval every 15 min paused for 5 min. The slurry dried in an oven with 120°C for 2 hours then sintered at 900°C for an hour. The synthesized powder was analyzed by XRD, PSA, and SEM confirmed the formation of HAp structure with nanocrystallite size, morphology in all variables. The crystallite size increased with increasing PBR. At PBR 1:2,878 and ball size 6 mm was obtained crystallite size about 24,78 nm with 95% crystallinity. The particle size decreased with increasing PBR. Morphology of hydroxyapatite was ununiform to granular with mol ratio Ca/P 1,81.Keywords: ball mill, hydroxyapatite, mechanochemical, powder to ball ratio
Sintesis Hidroksiapatit Dari Cangkang Telur Dengan Metode Presipitasi Novika Sri Wardani; Ahmad Fadli; Irdoni Irdoni
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Hydroxyapatite powder from eggshell waste as biomaterial has been succesfully synthesized using precipitation method with variation of ratio Ca/P and reaction temperature. High incidence of bone destruction in Indonesia led to an increased need for biomaterials as bone substitute forexample is HAp. The purpose of this study is to assess the effect of the molar ratio of Ca / P and the temperature reaction to hydroxyapatite and characterization of eggshells using AAS and products with XRD, SEM – EDX, and FTIR. Eggshell was calcined at temperature 1000°C to produce calcium oxide (CaO). CaO dissolved in nitric acid (HNO3) to produce Ca(NO3)2 then mixed gently with diammonium hydrogen phosphate was dissolved into aquabidest . HAp produced has ratio Ca/P <1,67. Absorption band of OH-, CO32-, and PO43- groups indicate HAp compounds, but it also contained carbonated hydroxyapatite (CHAp) and tricalcium phosphate (TCP) group. The morphology of HAp particle have a granular shape. The particle size of HAp is getting smaller with increasing the ratio of Ca/P in the range of 69-53 nm and greater with increasing reaction temperature which ranges from 39-47 nm.                                                                 Keywords : Calcination, eggshell, Hydroxyapatite, precipitation
Pembuatan Scaffold Trikalsium Fosfat Berpori Menggunakan Metode Protein Foaming-Consolidation Dengan Variasi Waktu Dan Temperatur Pengeringan Gede Indra Ludy Wirata; Ahmad Fadli; Fajril Akbar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Tricalcium phosphate (TCP) is a ceramics material which is widely used for bone subtitude. Protein foaming-consolidation method is a technique for production of porous tricalciumphosphate (TCP) using egg yolk as pore creating agent. The purpose of this research was to investigate the effect of time and drying temperature effect on physical, chemical and mechanical properties of porous TCP and characterizing porous TCP as bones implant. This research start by mixing TCP powder, sago powder, Darvan 821A and egg yolk. The slurries were mechanical stirred at 150 rpm for 3 hours. Then, the slurries were casted in a cylindrical stainless stell moldand heated at 160oC, 180°C and 200oC for 5, 10, 15, 20, 30, 40, 50 and 60 minutes. Subsequently, dried samples were demolded and burned at 600°C for 1 hour.,For the final steps,samples were sintered at 1150oC for 1 hour. The results of porous TCP from this research was 45.90-61.70% for porosity, the density was 1.20-1.72 g/cm3 and the compressive strength was 8.04-8.64 Mpa.Keyword : tricalcium phosphate, egg yolk, porosity, density, compressive strength
Kinetika Reaksi Sintesis Hidroksiapatit Menggunakan Metode Presipitasi Dengan Pencampuran Langsung Fadhil Mubarak; Ahmad Fadli; Fajril Akbar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Hydroxyapatite is a ceramic material that has chemical composition and crystal structure similar to the human bone, then it iscompatible to use as bone implant. The most one of method that used production of hydroxiapatite is precipitation method. The aim of this research is to determine the kinetics reaction of the synthesis of hydroxyapatite using one drop precipitation method. The research was started with stirred 8.27 grams of CaO in 200 ml of aquadest.Then added with 1,8 M phosphoric acid in to while heated with a temperature variation of 40°C, 50°C and 60°C and stirring rate of 300 rpm. The solution in reactor were taken every 10 minutes by 20 ml volume. Further samples were filtered with filter paper, and then the filtrate was analyzed by complexometric titration. The results showed that the reaction followed pseudo second order equation. Constans of reaction increases with increasing temperature following Arrhenius equation, at stirring rate of 300 rpm obtained k = 1,97e- (13194,4 / RT).Key words : ceramic, hydroxyapatite, reaction kinetic, precipitation
Pengaruh Jumlah Siklus Dip-Drying Pada Sintesis Koating Tembaga-Kobalt Oksida Berbasis Nitrat Konsentrasi Tinggi Sebagai Solar Selective Absorber Dengan Metode Sol-Gel Dip-Coating Benny Ahmadi; Amun Amri; Ahmad Fadli
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Solar Selective Absorber (SSA) is the most important part that determines the efficiency of solar thermal collectors. SSA should have high absorptance (low reflectance at wavelengths <2.5 m) and low emitance (high reflectance at wavelengths> 2.5 m). Solar selective absorber can be synthesized using sol-gel dip coating method. The purpose of this research is to know the effect variation number of dipping-drying cycles to absorptance copper-cobalt coating and get a coating of copper cobalt that have absorptance value is high (> 80%) and low emitance (<10%). The coating were synthesized by molar percursors 0.25:0.5M and number of dipping-drying cycles 1x, 2x, 3x, 4x, 6x, 8x and 10x. Reflektance spectra in the area of UV-Vis-NIR showed that increased cycles of dipping-drying cycles (which increases the thickness of the coating) increase the value of absorptance (α). The results showed that the highest absorptance value found in coatings which was synthesized using mixture copper nitrate and cobalt nitrate 0.25:0.5M M at 2x cycles (dipping and drying) with absorptance (α) = 84.90%. Further characterization showed emitance values (ε) = 13.2%.Keywords : aluminum, coating, solar selective absorber and sol-gel dip-coating
Co-Authors Abdul Kohar Abdul Malik K.A Abdul Rasyid Achmad Noerkhaerin Putra Adam Samsudin Noor Ade Pratama Adela Shofia Addabsi Adha Widoni Adi Maulana Putra Adi Mulyadi Putra Adrianto Ahmad Aep Saefullah Afrila Afrila Agung Prabowo Agung Prabowo Agus Susanto Agya Mutia Alifta Ahmad Aguswin Ahmad Fadhil Nugroho Ahmad Riadi S Hasibuan Ahmad Zaki Akhmad Akhmad Akhmad Akromusyuhada Alfarisi, Cory Dian Allailus Syah Safara Aman aman Amun Amri Andi Risfan Rizaldi Annisa Aprilya Putri Annisa Rahmat Ap’aluddin Ari Aditia Sukma Sukma Arifin Setiabudi Arisky Rahmatulloh Arosyidin Arosyidin Aulia Permatasari Bahruddin Benny Ahmadi Bima Wandika Putra Cahyo Dwi Rachmadi Calvin Prasetyo Chaniago, Sabaruddin Charismayani Charismayani Chorina Ika Ristanti Damayanti, Elok Debora Tambunan Deni Astika Derry Hanriansyah Pratama Deska Deska Devia Febrina Dewi Indah Pratiwi Dewi Rafiah Pakpahan Dhamala Shobita Chandra Dhanang Hayuningwang Dingot Hamonangan Sitanggang Dion Julio Iskandar Dovy Reyandi Drastinawati Drastinawati Dwi Yerlis Rahmi Edy Saputra Effendi, Ihsan Elvira Sitna Hajar Emizatul Aini Ervina Ervina Esty Octiana Sari Fadhil Mubarak Fajril Akbar Fernando Susilo Fisy Amalia Gading Bagus Mahardika Gede Indra Ludy Wirata Gunawan Atmaja Halim Wijaya Heni Sugesti Herry Novriansyah I Wayan Sudiarta Idral Amri Ika Agustina Ika Karina Ika Puspa Satriany Ilham Habib Indah Fitriani Indra Yasri Indrawan Indrawan Ines Indriyani Irdoni HS Irdoni Irdoni Irwan Ahussalim Jabosar Ronggur Hamonangan Panjaitan Jannatin Ardhuha Jayaun Jayaun Jenial S Jenni Kristina Br Panjaitan Jessica Andre Julharmito Julharmito Junaidi Junaidi Kania Farida Komalasari Komalasari LALU RUDYAT TELLY SAVALAS Lathifah Cahyani P3 Lia Yuningsih Lilis Suriani Luci Octaria M Satria Haruda M. Ferdinansyah M. Zamroni Mahendra Aswit Sandra Barata Manda Dwipayani Bhastary Marlinda Martin Maya Andiriani MAYANG SARI Mega Safana Mega Sanjaya Melda Helena S Miftah Anugrah Mochamad Reizal Ath Thariq Moh. Tahang Mona Lisa Muchlis Ade Putra Muh Irwan Muhamad Hendri Diarta Muhamamad Rizky Zuriadi Muhammad Hamdani Mustika Canra MUTIARANI MUTIARANI Nanda Nabila Maharani Nasib Nisa Mulya Nissa Aqhilla Novika Sri Wardani Novirsari, Emma Nuraina Siregar Nurjamilah Nursyaniati Nursyaniati Nurul Afifah Ongky Alexander Opik Hidayat Abdul Latif Padil Pancasila Putri Peter Peter Puji Rahayu Purnama Sari Putri Arini Putri Julia Maemum Putri Rahmadani Rahmad Rasyidin Ramadani Pardian Ramadhana Eka Rani Handayani Rathesa Najela Ratih Amelia Rawdatul Fadila Reny Novianti Ridho Hafizh Maulana Ridho Wijaya Riki Rahmadhan Riko Ervil Rio Andika Rizky Gimnastiar Robin Roni Juliansyah Rozanna Sri Irianty Rusydy &#039; Sai Vinodhini Samsoni Samsoni Septiana Veronika S Septianing Tyas K Silvia Reni Renti Silvia Reni Yenti Silvia Reni Yenty Sintia Siska Priscillia Aledya Siti Chotijah Siti Nurkhaliza Sri Murda Niati Subkhan Maulana Sunarno Sunarno Syarifuddin Oko Syelvia Renni Yenti Thomson Simanjuntak Thufail Mujaddid Al-Qoyim Tina Linda Toni Ardi Ulfa Dwiyanti Ulfah Naida Marbun Wan Elsa Novtari Adiani Wasty Rusjaya Wilda Zakiah Wiriyan Jordy Wyda N Saragi Yelmida Azis Yesi Afriani Yopy Ratna Dewanti Yuli S Yunus Olivia Novanto Zubair Arza Zuchra Helwani Zulkarnain Lubis Zultiniar Zultiniar