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All Journal International Journal of Evaluation and Research in Education (IJERE) VALENSI Cakrawala Pendidikan Jurnal Kependidikan: Penelitian Inovasi Pembelajaran JPMS (Jurnal Pendidikan Matematika dan Sains) Jurnal Penelitian Saintek EKSAKTA: Journal of Sciences and Data Analysis Jurnal Pendidikan Kimia Indonesia Jurnal Pengajaran MIPA Jurnal Pendidikan Indonesia Pelita - Jurnal Penelitian Mahasiswa UNY Journal of Mathematical and Fundamental Sciences Majalah Kulit, Karet, dan Plastik JPS Unimus Jurnal Inovasi Pendidikan IPA Jurnal Tadris Kimiya JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika) Jurnal Penelitian Pendidikan IPA (JPPIPA) PAEDAGOGIA ALCHEMY Jurnal Penelitian Kimia Jurnal Pendidikan Kimia (JPKim) Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Jurnal Tarbiyah : Jurnal Ilmiah Kependidikan Psychology, Evaluation, and Technology in Educational Research Molekul: Jurnal Ilmiah Kimia Jurnal Riset Pendidikan Kimia (JRPK) Hydrogen: Jurnal Kependidikan Kimia Jurnal Eduscience (JES) Jurnal Riset Teknologi Industri Hydrogen: Jurnal Kependidikan Kimia Jurnal Pijar MIPA Kaunia: Integration and Interconnection of Islam and Science Journal International Journal on Education Insight Journal of Educational Sciences Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education) Jurnal Pendidikan Kimia Unkhair (JPKU) PEDAGOGIC: Indonesian Journal of Science Education and Technology Jurnal Elemen Kimia Jurnal Riset Pembelajaran Kimia Horizon: Indonesian Journal of Multidisciplinary al Kimiya : Jurnal Ilmu Kimia dan Terapan International Journal of Studies in International Education

Eli Rohaeti

Chemistry Department, Faculty Of Mathematics And Natural Science, Yogyakarta State University, Indonesia

Author-ID : 258948

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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BIODEGRADATION OF POLYURETAN RESULTS OF SYNTHESIS OF SOYBEAN OIL, GLYCOLOLY POLYOKYLETHLES, AND METHYLES-4,4'-DIFENILDIISOSIANAT Eli Rohaeti; Senam Senam
Jurnal Penelitian Saintek Vol 15, No 2: Oktober 2010
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

The objective of research were to synthesize polyurethane from soybean oil, P EG400 and MDI, to determine the cross linking, and to learn the influence of incubation times toward degradability of polyurethane. Polyurethane was synthesized from soybean oil and oxydated soybean oil at room temperature followed by curing for 10 hours at 70 DC,and than at 100 "c for 3 hours. The synthesis was conducted with mass compositionSBOI OSBO : P EG400 : MDI = 1 : 2 : 3. Biodegradation was conducted by usingmicroorganism in an actived sludge of malka medium at 37°C. The variation of incubation times were 5, 10, 15, 20, 25, and 30 days, respectively with changes of media every 5 days. Characterizations of polyurethane were functional groups, cross linking, mass loss and biodegradability. The oxydated soybean oil has increased intensity of -OR functional group, hydroxyl number, density, melting and boiling point, otherwise the refraction index has decreased. The synthesized polyurethane has characteristic absorption of urethane functional group and cross link. The increasing of incubation time can decrease biodegradability of polyurethane. The mass loss of polyurethane from SBO-PEG400-MDI has the higher. Biodegradation can disappear urethane group and decrease crystallinity of polyurethane. Key words: biodegradation, mass loss, crystallinity, polyurethane

PENERAPAN MODEL PROBLEM BASED LEARNING DALAM MENINGKATKAN KEMAMPUAN BERPIKIR ANALITIS DAN KETERAMPILAN PROSES SAINS PESERTA DIDIK SMA Klaudius Ware; Eli Rohaeti
Jurnal Tadris Kimiya Vol 3, No 1 (2018)
Publisher : Department of Chemistry Education, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/jtk.v3i1.2219

Tujuan penelitian yaitu menguji pengaruh penerapan model problem based learning terhadap kemampuan berpikir analitis dan keterampilan proses sains peserta didik SMA Negeri 1 Sleman pada materi larutan penyangga. Sampel dalam penelitian ini yaitu, 63 peserta didik SMA Negeri 1 Sleman terbagi atas kelas eksperimen yang mengikuti pembelajaran dengan model problem based learning dan kelas kontrol yang mengikuti pembelajaran dengan model 5M (Mengamati, Menanya, Mengumpulkan Data, Mengasosiasi, dan Mengkomunikasikan). Kemampuan berpikir analitis dan keterampilan proses sains diukur dengan integrated assessment. Hasil penelitian menunjukkan bahwa nilai sig < 0,05 yaitu 0,000 < 0,05, dengan demikian terdapat pengaruh penerapan model problem based learning terhadap kemampuan berpikir analitis dan keterampilan proses sains peserta didik SMA Negeri 1 Sleman pada materi larutan penyangga.

Teacher Difficulties for Develop Higher Order Thinking Skills Assessment Instrument on Reaction Rate Betzy Ayu Omega Rampean; Eli Rohaeti; Widya Prasasti Utami
Jurnal Pendidikan Kimia Indonesia Vol. 6 No. 1 (2022)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jpk.v6i1.40898

Penggunaan instrumen penilaian kemampuan berpikir tingkat tinggi diharapkan mampu mengembangkan kemampuan peserta didik untuk memecahkan masalah nyata serta memberikan peserta didik kesempatan agar mampu memikirkan, menerapkan dan berkolaborasi dengan sistematis melalui proses atau hasil yang sesuai dengan persyaratan kelulusan. Tujuan penelitian ini ialah menganalisis proses pembelajaran kimia, menjelaskan instrumen penilaian yang digunakan dalam proses pembelajaran kimia dan untuk mengetahui permasalahan yang dihadapi guru dalam melaksanakan penilaian kemampuan berpikir tingkat tinggi. Jenis penelitian yang digunakan adalah evaluasi deskriptif. Subjek evaluasi ini adalah guru kimia. Instrumen yang digunakan dalam penelitian ini adalah lembar angket pertanyaan terbuka yang menggali tentang penerapan dan pemahaman guru mengenai instrumen penilaian HOTS. Data dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa hanya 40% guru di sekolah telah melakukan pengukuran kemampuan berpikir tingkat tinggi dikarenakan kurangnya pemahaman guru mengenai kemampuan berpikir tingkat tinggi, waktu pembuatan soal yang lama dan jumlah peserta didik yang banyak, sehingga perlu diadakan pengembang instrumen penilaian HOTS pada materi laju reaksi.

PEMANFAATAN ALGINAT DARI ALGA COKLAT(SARGASSUM SP) UNTUK PRODUKSI PLASTIK YANG BIODEGRADABLE Essye Dwiwahyu R, Mita Suryani, Ratna Dwi W, Eli Rohaeti
Pelita - Jurnal Penelitian Mahasiswa UNY Volume III, Nomor 1, April 2008
Publisher : Pelita - Jurnal Penelitian Mahasiswa UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (183.612 KB)

The developing of biodegradable plastic is an alternative to overcome the problemon the abundance of plastic in environment. This research aims to 1) learn the productionprocess of biodegradable plastic from alginat, 2) learn the easy of biodegradation processfrom plastic material, 3) learn the influence of the length of biodegradation toward theweight loss of plastic from alginat, and 4) compare the degradability between LLDPE((Low Liniear Density Polyethylene) plastic and HDPE (High Density Polyethylene).Alginat was from the extraction of brown algae and Na2CO3 12% , then it was madeas gel by adding HCL 10%. The production process of biodegradable plastic was done byblending-tecnique (LLDPE dan HDPE) with alginat. The test of biodegradable plasticwas done by piling soil up for six days. The speed of weight loss of plastic was shown bythe percent of plastic weight loss.The quatitative analysis of alginat isolated from brown algae with concentration1;, 0.75; 0.5; 0.25 and 0.125% produces the viscosity 2.48; 2.05; 1.89; 1.71; dan 1.62poise, and also specific gravity of alginat 1.085; 1.081; 1.078; 1.083; and 1.078 g/ml. Thebiodegradation result of LLDPE, HDPE, LLDPE plus Alginat and HDPE plus Alginatfind the average of weight loss for three days are 9.03; 4.76; 0; and 16.86%, and for sixdays 0; 0.75; 9.45; and 6.08%. The biodegradable plastic with HDPE plus alginat isbiodegraded faster because of having short chain of ramification.Key words: brown algae, alginat, biodegradable

Pengaruh Jenis Poliol terhadap Pembentukan Poliuretan dari Monomer PEG400 dan MDI Eli Rohaeti; N. M. Surdia; Cynthia L. Radiman; E. Ratnaningsih
Journal of Mathematical and Fundamental Sciences Vol. 35 No. 2 (2003)
Publisher : Institute for Research and Community Services (LPPM) ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.sci.2003.35.2.2

The properties of polyurethane depend largely on building blocks, especially the kind of polyol. Not only pure synthetic compounds but also various natural substances such as saccharides (glucose, fructose, maltose, sucrose) and amylose can be used as possible resources of polyol in polyurethane synthesis. Those natural substances are natural polymeric materials having appropriate reactivity thank to its functional groups such as hydroxyl groups. Natural polymers having more than two hydroxyl groups per molecule can be used as polyols for polyurethane synthesis. In this study, the effect of addition of saccharide (glucose, maltose) and amylose in the synthesis polyethylene glycol 400 (PEG400) and methylene-4,4'-diphenyldiisocyanate (MDI) based polyurethane was studied by measuring the hydrogen bonding index (HBI) and the thermal properties. Characterization of functional groups in resultant polyurethane was analyzed by FTIR spectrophotometry, the thermal properties were conducted with Differential Thermal Analysis (DTA), Differential Scanning Calorimetry (DSC), and Thermal Gravimetric Analysis (TGA). The addition of saccharide (glucose, maltose) and amylose on the synthesis polyurethane from polyethylene glycol 400 (PEG400) and methylene-4,4'-diphenyldiisocyanate (MDI) can increase the hydrogen bonding index and the glass transition temperature of polyurethane. In all case the increase of glucose unit in polyol can increase the hydrogen bonding index, the glass transition temperature, and the thermal stability of polyurethane.

SELEKSI BAKTERI TERMOFILIK SELULOLITIK PASCA ERUPSI MERAPI Anna Rakhmawati; Evy Yulianti; Eli Rohaeti
Kaunia: Integration and Interconnection Islam and Science Vol. 10 No. 2 (2014)
Publisher : Fakultas Sains dan Teknologi UIN Sunan Kalijaga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/kaunia.1070

Thermophilic bacteria after the eruption of Merapi in 2010 have been isolated from the Gendol Atas river with dilution and enrichment methods. The purpose of this study was to conduct the selection of these bacteria as producers of cellulase enzymes. Selection was done by growing 348 bacterial isolates on selective media Mandels-CMC 0.5% using Carboxy Methyl Cellulose (CMC) as carbon source. Incubation was performed at 55 °C for 24 hours. The results showed 255 isolates (73.27%) were able to grow in Mandels medium-CMC 0.5%. Bacterial isolates were isolated by enrichment method (69.8%) were more able to grow on selective media compared with the dilution method (30.2%). The diameter of the three largest colonies were isolates D13a (2.44 cm); E135 (2.33 cm); and D110a (1.98 cm).

PENGEMBANGAN MAJALAH KIMIA UNTUK MENINGKATKAN MOTIVASI BELAJAR DAN KREATIVITAS PESERTA DIDIK KELAS X SMA N 1 MLATI Eko Yuliyanto; Eli Rohaeti
JURNAL PENDIDIKAN SAINS UNIVERSITAS MUHAMMADIYAH SEMARANG Vol 1, No 1 (2013): JURNAL PENDIDIKAN SAINS UNIVERSITAS MUHAMMADIYAH SEMARANG
Publisher : Pendidikan Kimia Unimus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/jps.1.1.2013.1-15

Tujuan penelitian ini adalah (1) menguji kualitas majalah kimia berdasarkan aspek kelayakan materi, penyajian, bahasa dan gambar, dan (2) mengetahui perbedaan motivasi dan kreativitas peserta didik di kelas yang menggunakan majalah kimia (kelas eksperimen) dan di kelas yang tidak menggunakan majalah kimia (kelas kontrol) selama proses pembelajaran kimia. Penelitian ini merupakan penelitian pengembangan yang dilakukan melalui tujuh tahap yaitu: penelitian pendahuluan; perumusan tujuan; perancangan format produk dan pembuatan instrumen penilaianmajalah kimia; penyusunan instrumen variabel (motivasi dan kreaivitas); penyusuanan draft majalah kimia; validasi oleh teman sejawat, ahli materi, ahli media dan pembelajaran, guru kimia; uji coba kelompok kecil, dan uji coba lapangan. Tahap uji coba lapangan menggunakan quasi exsperimentdengan rancangan non-equivalent control group design dan penelitian ini melibatkan kelas kontrol (n=29) dan kelas eksperimen (n=30) yang dipilih dengan teknik simple cluster random sampling dari tiga kelas yang ada di SMA N 1 Mlati. Instrumen pengumpulan data yang digunakan yaitu instrumen kualitas majalah kimia, lembar angket motivasi belajar, lembar observasi motivasi, lembar angketkreativitas peserta didik, dan lembar observasi kreativitas peserta didik, dan lembar respon siswa. Hasil penelitian ini adalah sebagai berikut.(1) Hasil penelitian sesuai dengan prosedur penelitian pengembangan. (2) Majalah kimia untuk aspek materi oleh temen sejawat dan guru kimia dinilai “sangat baik”, dan oleh ahli materi dan peserta didik dinilai “baik”. (3) Validasi majalah kimia dalam aspek kelayakan penyajian oleh teman sejawat dinilai “sangat baik”, sedangkan oleh ahli media danpembelajaran, guru-guru kimia, serta peserta didik dinilai “baik”. (4) Validasi dalam aspek kelayakan bahasa dan gambar oleh teman sejawat, ahli media dan pembelajaran, serta peserta didik dinilai “sangat baik”, sedangkan guru menilai “baik”. Majalah kimia memiliki kelayakan materi, kelayakan penyajian, dan kelayakan bahasa serta gambar yang baik sehingga majalah kimia layak digunakansebagai sumber belajar mandiri oleh peserta didik. Berdasarkan hasil uji lapangan yang dianalisis menggunakan uji Multivariate Analisis of Variance (MANOVA) disimpulkan bahwa motivasi dan kreativitas peserta didik secara simultan antara kelas eksperimen dan kelas kontrol tidak berbeda signifikan (Sig.= 0,058; p>0,05). Hal ini menunjukkan bahwa majalah kimia belum mampu meningkatkan motivasi dan kreativitas peserta didik secara simultan. Kata Kunci: majalah kimia, sumber belajar mandiri, motivasi, dan kreativit

The development of audio-visual media with contextual teaching learning approach to improve learning motivation and critical thinking skills Khairani Sarwinda; Eli Rohaeti; Mirra Fatharani
Psychology, Evaluation, and Technology in Educational Research Vol. 2 No. 2 (2020)
Publisher : Research and Social Study Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33292/petier.v2i2.12

The study aims at developing the valid Contextual Teaching-Learning (CTL) Approach-based audio visual learning media in order to improve the learning motivation and the critical thinking skills significantly and also at identifying the effectiveness level of the Contextual Teaching-Learning (CTL) Approach-based audio visual learning media in improving the studentsâ€™ learning motivation and critical thinking skills. Therefore, autoatically the nature of the study is research and development. During the conduct of the study, the data were gathered by using the random sampling technique. Then, the data gathering instruments that had been implemented were the media assessment questionnaire, the observation, the motivation questionnaire and the critical thinking skills test. The results of the study show that the Contextual Teaching-Learning (CTL) Approach-based audio-visual learning media that has been developed by using the Borg & Gall model is considered valid. The studentsâ€™ learning motivation has increased as having been confirmed by the fact that the students are more enthusiastic, more interested and happier in attending to the learning process. Furthermore, the results of the studentsâ€™ critical thinking skills test in the experimental group show that 25 students have met the passing grade while the remaining 6 students have not met the passing grade. On the other hand, the results of the studentsâ€™ critical thinking skills test in the control group show that 20 students have met the passing grade while the remaining 12 students have not met the passing grade. In other words, these findings show that the learning process through the use of the Contextual Teaching-Learning (CTL) Approach-based audio-visual learning media is able to improve the studentsâ€™ learning motivation and critical thinking skills.

Preparasi Matriks Alam Sekresi Kutu Lak Dengan Asam Adipat Pada Biokomposit Serat Rami Hestya Arinta Ayu Prianto; Roza Ruspita; Eli Rohaeti
Hydrogen: Jurnal Kependidikan Kimia Vol 7, No 2 (2019): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika

In this research, preparation of natural matrix from modified flea secretion (SKL) by the addition of adipic acid as matrix in biocomposites of ramie fiber have been carried out. This research was initiated by dissolving the chunks of flea secretion using ethanol with ratio 1:2 and heated at temperature 50oC. Flea secretion has modified by the addition of adipic acid in various concentration 5%, 10%, 15%, 20%, and 25%. Viscometry technique with viscometer ostwald was used for characterizing intrinsic viscosityof natural matrix. The optimum value of intrinsic viscosity were reached at concentration 5% of adipic acid that has 77,08 mg/l viscosity. Biocomposites were made by mixing ramie fibers and natural matrix SKL which have been modified by the addition of adipic acid with optimum concentration at 60:40ratio of fibers: matrix. Biocomposites were evaluated for mechanical properties with ASTM D638 type IV standard. Biocomposite sampel was formed specimens and tested with tensile tester. Biocomposite from ramie fibers and natural matrix SKL modified by adipic acid has a tensile strength 15,14 MPa and elastic modulus was 1519,15 MPa.

How are the Characteristics of Integrated Assessment Instruments to Measure Critical Thinking Skills and Scientific Attitudes of High School Students? Mir'atul Hasanatin; Eli Rohaeti
Jurnal Penelitian Pendidikan IPA Vol 7 No SpecialIssue (2021): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v7iSpecialIssue.1082

This research aimed to develop an integrated assessment instrument and to study the instrumentâ€™s characteristics. This research used 4-D development model of which the stages included defining, designing, developing, and disseminating. The primary product is validated by expert judgment. This research involved 274 mathematics and natural science eleventh-grade students of Senior High Schools in Sleman district, Yogyakarta. The polytomous data generated by the instrument trial was analyzed using the WINSTEPS 3.73 program and the Partial Credit Model 1-Parameter Logistic (PCM 1-PL) approach. Data collecting techniques included interviews, questionnaires, and tests. Data collecting instruments included interview guidelines, a question item validation sheet, and the integrated assessment instrument an essay test. The result of the research shows that the integrated assessment instrument has 0.93 of Aiken validation value. All tryout test items were stated to fit with the PCM 1-PL based on the criteria for the lowest and the highest limit outfit MNSQ 0.5 and 1.5. Item reliability was 0.96 and person reliability was 0.71. The difficulty level of question items was good, because of the range from -1.05 to +1.01 logit. Therefore, the integrated assessment instrument is suitable to be applied to measure the studentâ€™s critical thinking skills and scientific attitudes.

Co-Authors Abukasim, Sudarto Abukasim, Sudarto M. Adilah Afikah Afikah, Adilah Ageng Priatni Agus Ratriana Dewi Amalia, Puspita Anggraeni Wulandari Anggraeni, Lely Anjamampionona Notiavina, Andriandrainiarimanana Anna Rakhmawati Annisa Annisa Anti Kolonial Prodjosantoso Antuni Wiyarsi APRILIANA, APRILIANA Argo Khoirul Anas Ariantika, Dewita Azlan Kamari Baiq Miftah Azumi Beta Heva Anggraeni Betzy Ayu Omega Rampean Cynthia L. Radiman Dahlan, Jafar Das Salirawati Desfi Annisa, Desfi Deti Ratih, Putri Devina Siti Hafsah Dewi Yuanita Lestari Dianti, Sekar Paramitha Rizqy Din Azwar Uswatun Dini Rohmawati Dita Novita Rini Dwiani Ratna Sari Dwita Rachmawati Dyah Puspitasari Ningthias E. Ratnaningsih Eko Yuliyanto Elfina Salsabila Elisabeth Temuji Koten Elma Pujiana Emiliana Kasmudjiastuti Endang W Laksono Endang W. Laksono Endang Widjajanti Laksono FX Endang WLFX ENY KURNIAWATI Erfan Priyambodo Erni Johan Evy Yulianti Faiz Ilham Pratama Faiz Ilham Pratama Faiz Ilham Pratama Fatharani, Mirra Fauzia, Silvia Dwi Febri Saputri Goni, Nur Abdul Haatainen, Maria Outi Haatainen, Outi Maria Hardiyansyah*, Muhammad Agus Hari Sutrisno Hariyanti, Sherly Heru Pratomo Hestya Arinta Ayu Prianto Hotmauli Gultom Ihda Nur Rahmah Ina Rohmawati Irwanto Irwanto Isana Supiah Yosephine Louise Islawati Islawati Islawati Isti Yunita Ixora Sartika Mercuriani Jaslin Ikhsan Joronavalona, Rasamimanana Jumadi Jumadi Jumadi Jumadi K.H. Sugiyarto, K.H. Kamari, Azlan Khairani Sarwinda Klaudius Ware Kun Sri Budiasih Leny Christiana Lisya Asmiati Masâ€™ud, Alwan Masiswo Masiswo Meliana Fajri Nurkhasanah Meliana Fajri Nurkhasanah Mir'atul Hasanatin Mirra Fatharani Mujiyono Mujiyono N. M. Surdia Nanang Rudianto Ariefta Nayudin Hanif Nelson Tairas Nining Istiqomah Nur Fitriyana Nur Huda Nur Ihda Zulaikha Nurfina Aznam Nurhaliza Adisha Pawestri, Julianne Sharon Pratama, Faiz Ilham Prianto, Hestya Arinta Ayu Priastomo, Yoga Putri Deti Ratih Putri, Tiara Swastika Regina Tutik Padmaningrum Renita Purnaningrum Restu Utami, Restu Retno Arianingrum Rihastiwi Setiya Murti Riki Perdana Rochmadi Rochmadi Rochmadi Rochmadi Roshiana Maria Angelia Dewi Permata Gading Roza Ruspita Ruspita, Roza SAPUTRI, FEBRI Sari, Nariswara Lova Sarwinda, Khairani Sasmi, Weni Tri Senam Senam Sherly Hariyanti Simorangkir, Agustina Siti Aisyah Siti Apriliyanti Khodijah Siti Fatimah Siti Khuzaimah Siti Muhajir Sukisman Purtadi Sulistyani Sulistyani Suwardi Suwardi Suyanta Suyanta Syaza Syahana Tairas*, Nelson Titin Nurhayati Ma’mun Titis Wulandari Tutiek Rahayu Vita Fatmadewi Vivian Salelatu Wantrilita, Agil Widya Prasasti Utami Wika Rinawati Wulandari, Nadila Iin Yanti, Widya Ikhma Yoga Prihatna Yuni Nurfiana Yuyum Fahmidani

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