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All Journal HAYATI Journal of Biosciences MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Jurnal Ilmu Pertanian Indonesia Jurnal Silvikultur Tropika (JST) MEDIA KONSERVASI FORESTA Jurnal Penelitian Hutan dan Konservasi Alam Jurnal Penelitian Hutan Tanaman JURNAL PEMULIAAN TANAMAN HUTAN AGRIVITA, Journal of Agricultural Science Journal of Tropical Biodiversity and Biotechnology Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Jurnal Ilmu dan Teknologi Kayu Tropis Jurnal Teknik Mesin Indonesia JESBIO : Jurnal Edukasi dan Sains Biologi ALMUJTAMAE: Jurnal Pengabdian Masyarakat Jurnal Sylva Lestari Repong Damar: Jurnal Pengabdian Kehutanan dan Lingkungan Jurnal Pengabdian Pada Masyarakat Policy Brief Pertanian, Kelautan, dan Biosains Tropika Journal of Fisheries & Marine Annales Bogorienses Biodiversitas Journal of Biological Diversity
Ulfah Juniarti Siregar
Departemen Silvikultur, Fakultas Kehutanan, Institut Pertanian Bogor, Jl. Raya Darmaga, Kampus IPB Darmaga Bogor 16680
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BIOMASA HUTAN RAWA GAMBUT TROPIKA PADA BERBAGAI KONDISI PENUTUPAN LAHAN Adi Jaya; Ulfah J. Siregar; Herman Daryono; Sona Suhartana
Jurnal Penelitian Hutan dan Konservasi Alam Vol 4, No 4 (2007): Jurnal Penelitian Hutan dan Konservasi Alam
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphka.2007.4.4.341-352

Abstract

Lahan gambut tropika memiliki fungsi sangat penting yang terkait dengan masalah konservasi, terutama fungsi simpanan dan rosot karbon, yang mempengaruhi perubahan iklim global. Namun, lahan gambut mengalami berbagai  tekanan  dari  penggunaan lahan  yang  beragam termasuk pembangunan kehutanan, drainase  pertanian,  energi,  dan  hortikultura.  Tujuan  penelitian  ini  yaitu  untuk  mendapatkan  informasi biomasa hutan gawa gambut tropika terutama di Kalimantan Tengah pada berbagai kondisi penutupan lahan. Penelitian pada biomasa rawa gambut dilaksanakan pada beberapa jenis penutupan lahan yaitu hutan rawa gambut primer, hutan bekas tebangan, dan kawasan bekas terbakar. Metode destruktif diterapkan pada tiga petakan berukuran 10 x 10 m2. Contoh masing-masing bagian vegetasi seperti batang, cabang, ranting, dan daun diambil untuk analisis kadar air. Hasil penelitian menunjukkan bahwa ada suatu perbedaan biomasa di atas permukaan tanah yang nyata antara hutan rawa gambut yang relatif masih baik, hutan bekas tebangan, dan kawasan terbakar. Rata-rata jumlah biomasa adalah antara 400-900 ton/ha untuk hutan rawa gambut yang relatif masih baik, 240-400 ton/ha untuk hutan bekas tebangan,  210-460 ton/ha untuk kawasan bekas kebakaran tahun 1997, dan antara 15 hingga 21 ton/ha untuk kawasan yang dua kali mengalami kebakaran.
KONFIRMASI JENIS DAN KERAGAMAN GENETIK SENGON RESISTEN DAN RENTAN INFEKSI KARAT TUMOR MENGGUNAKAN PENANDA DNA KLOROPLAS (Species confirmation and genetic diversity of Gall-rust resistant and susceptible sengon using chloroplast DNA marker) Hasyyati Shabrina; Ulfah J. Siregar; Deden D. Matra; Iskandar Z. Siregar
Jurnal Penelitian Hutan Tanaman Vol 17, No 2 (2020): JURNAL PENELITIAN HUTAN TANAMAN
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpht.2020.17.2.117-130

Abstract

                                                ABSTRACTSengon (Falcataria moluccana) plantations, particularly in Java, have been facing threats from gall-rust disease caused by the pathogen Uromycladium falcatariae, which has caused considerable economic losses. Other species with morphological similarities with F. moluccana raises the question of whether the infected and non-infected sengon are the same species. This study aimed to confirm the haplotype of infected and non-infected sengon by gall-rust and compare them with a morphologically similar species of Albizia chinensis using the psbA-trnH intergenic spacer region molecular marker on chloroplast DNA. Wet wood samples from 32 infected plants and 32 non-infected plants were collected from Bogor and Ciamis, West Java, for analysis and comparison with A. chinensis sequences from the same gene region. The results showed that the infected and non-infected sengon came from the same haplotype with a genetic distance of 0 and InDel diversity of 0,031. Meanwhile, from 380 parallel aligned sites, there were 27 different sites between F. moluccana and A. chinensis. The genetic distance of the two species was classified as very low at 0.017. The psbA-trnH intergenic spacer region sequences of sengon in this study were the first to be uploaded to GenBank and can be accessed with accession numbers of LC456638.1 to LC456701.1.                                               ABSTRAKHutan tanaman sengon (Falcataria moluccana), khususnya di Pulau Jawa, pada  umumya menghadapi serangan penyakit karat tumor yang disebabkan oleh patogen Uromycladium falcatariae, sehingga menimbulkan kerugian ekonomi yang cukup besar. Adanya spesies lain yang memiliki kemiripan morfologi dengan F. moluccana menimbulkan  pertanyaan apakah sengon yang terserang dan tidak terserang karat tumor merupakan jenis yang sama. Penelitian ini bertujuan untuk mengonfirmasi jenis sengon yang terserang dan tidak terserang karat tumor dan membandingkan dengan spesies yang mirip secara morfologi, yaitu Albizia chinensis menggunakan penanda molekuler daerah psbA-trnH intergenic spacer pada DNA kloroplas. Sampel kayu basah dari 32 tanaman terserang dan 32 tanaman yang tidak terserang karat tumor diambil dari Bogor dan Ciamis, Jawa Barat, untuk dianalisis dan dibandingkan dengan sekuens A. chinensis dari wilayah gen yang sama. Hasil analisis menunjukkan bahwa sengon yang terserang dan tidak terserang berasal dari haplotipe yang sama dengan jarak genetik 0 dan keragaman InDel sebesar 0,031. Sementara itu, dari 380 situs yang sejajar, terdapat 27 situs yang berbeda antara F. moluccana dan A. chinensis. Jarak genetik kedua jenis tersebut tergolong sangat rendah yaitu 0,017. Sekuens daerah psbA-trnH intergenic spacer sengon dalam penelitian ini merupakan yang pertama diunggah di GenBank dan dapat diakses dengan nomer aksesi LC456638.1 sampai LC456701.1.
DIFFERENTIALLY EXPRESSED GENES (DEGS) PADA Dryobalanops aromatica YANG DITUMBUHKAN PADA MEDIA GAMBUT DAN TANAH MINERAL Yosie Syadza Kusuma; Fifi Gus Dwiyanti; Deden Derajat Matra; Ulfah Juniarti Siregar; Iskandar Zulkarnaen Siregar
Jurnal Pemuliaan Tanaman Hutan Vol 15, No 2 (2021): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpth.2021.15.2.115-128

Abstract

Dryobalanops aromatica is a highly economic value resin-producing tree and has been known as an important international trade commodity that is widely used in the perfume, cosmetic, medicine, and wood industries. In natural habitats, this species has been found to grow well on peatland and mineral soils. The information regarding adaptive genes in Indonesian native trees to abiotic stress is still very limited. The research was conducted to analyse the differentially expressed genes (DGEs) that can elucidate the role of several upregulated and down-regulated genes under peat media and mineral soil treatments. DGE analysis was carried out using R software, Bioconductor package 'edgeR'. Using the Benjamini and Hochberg approach to control FDR (FDR 0.05), with a Log2FC 2 and p-value of 0.05, showed 320 contigs were up-regulated and 439 contigs were down-regulated, while 58129 contigs were not significantly expressed. Furthermore, this study also presents an overview of the genes involved in different pathways, such as photosynthesis, carbon and energy metabolism, hormone-related genes, nitrogen metabolism, reactive oxygen species, and transcription factor. This information will be useful in understanding D. aromatica molecular responses to stress condition that may be of use for selecting genotypes in the breeding programs or peatlands restoration
Pengujian tarik dan kekerasan permukaan komposit anyaman serat jute menggunakan variasi viskositas matrik resin epoksi I Wayan Windra Nugraha; I Made Astika; I Dewa Gede Ary Subagia
Jurnal Teknik Mesin Indonesia Vol 16 No 2 (2021): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v16i2.239

Abstract

Eksperimen ini difokuskan untuk menyelidiki sifat ketegangan dan kekerasan permukaan komposit kain tenun serat jute dengan viskositas variasi matriks epoksi. Rasio matriks dirancang dalam tiga rasio antara epoksi dan pengerasan seperti 60:40 wt%, 65:35 wt%, dan 70:30 wt% dengan masing-masing ditambahkan 5% dan 10% dari pelarut thinner NC. Komposit diproduksi dengan Vacuum Resin Transfer Molding (VRTM) dan viskositas matriks diuji menggunakan Metode Bola Jatuh. Selain itu, sifat tarik dan kekerasan komposit masing-masing diuji oleh Universal Tension Machine (UTM) dan Rockwell hardness testing machine (RH). Juga, sifat kegagalan komposit dianalisis di bawah pemindaian mikroskop elektron (SEM). Hasil pengujian menunjukkan bahwa nilai tegangan tarik tertinggi dari komposit terjadi pada spesimen dengan komposisi matriks 60wt%:40wt% tanpa tambahan pelalut thinner sekitar 41,823MPa. Modulus dari komposit adalah 1.370 GPa, dan perpindahannya rata-rata 0,04% maksimum. Selain itu, kekerasan permukaan komposit menghasilkan nilai lebih tinggi pada rasio komposisi adalah 65wt%: 35wt% dengan pelarut ditambahkan 10%. Kesimpulannya, pelarut yang ditambahkan pada komposisi matriks tidak signifikan mempengaruhi kekerasan permukaan komposit. Ini hanya signifikan mempengaruhi antarmuka antara matriks dan penguatan, sehingga kegagalan tarik-keluar dan delaminasi selama uji tarik dapat secara efektif dikurangi.
Study on Alfa-Amylase Inhibitor in Sengon (Paraserianthes falcataria (L) Nielsen) Trees, of Kediri, Solomon and Subang Provenances Ulfah Juniarti Siregar; Puti Awali Saimima
Jurnal Silvikultur Tropika Vol. 2 No. 1 (2011): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.2.1.%p

Abstract

Sengon  (Paraserianthes falcataria (L) Nielsen) is one of potential tree to develop because of its diverse benefits. At present, sengon plantation suffer from serious attack by stem borer (Xystrocera festiva Pascoe), known as boktor. It was known that boktor digestive tract contains α-amylase enzyme, sengon trees have α-amylase inhibitor. It is necessary to study the nature of α-amylase inhibitor in sengon tree to produce superior clone of sengon, which contains highest  α-amylase inhibitor activity and resistant to stem borer.The purpose of this study is to determine different level of α-amylase inhibitor activity from three provenances of Kediri, Solomon and Subang, both in the bark and stem of healthy and heavily attacked trees. It also compared the activity of α-amylase inhibitor using synthetic and natural enzymes from the digestive gut of boktor larvae. Plant materials were woods and barks of sengon trees from provenances of Kediri, Solomon, and Subang, which were made into powder. Two types of tree were selected, i.e. healthy and severely attacked trees. Observation of α-amylase inhibitor activity was carried out using the α-amylase synthetic enzyme (SIGMA, 320 U/mg) and natural enzymes from the digestive tract of boktor larvae, size 3.5 cm. The data were analyzed in a Complete Randomized Factorial Design (CRFD) with three factors, i.e. provenance, condition of the tree, and different tree tissue, using SPSS 18.0 software. Analysis of variance using synthetic enzymes showed that tree conditions and tissues have highly significant influence on the activity of α-amylase inhibitor, while in the other hand provenance factor did not. The trees stem (29,4751 AUI/mg) had a higher α-amylase inhibitor activity than in trees bark (41.932 AUI / mg). The average of α-amylase inhibitor activity in healthy trees (28,5689 AUI/mg) higher than in the attacked trees (25,6894 AUI/mg).Analysis of variance using natural enzymes showed that tree conditions and provenance have highly significant influence on the activity of α-amylase inhibitor. Subang provenances had a highest average of α-amylase inhibitor activity compared to other provenances that is equal to 55.2956 AUI / mg. Then the average α-amylase inhibitor activity in healthy trees stem (59.7946 AUI / mg) was higher than the activity of α-amylase inhibitor on severely attacked trees stem (41.932 AUI / mg).
Correlation of Enzyme Inhibitor Activity in Sengon with Boktor Larval Growth on Artificial Diet Ulfah Juniarti Siregar; Noor Farikhah Haneda; Laura Flowrensia
Jurnal Silvikultur Tropika Vol. 2 No. 2 (2011): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.2.2.%p

Abstract

Sengon  (Paraserianthes falcataria  (L) Nielsen) is widely planted for reforestation programs, especially in establishment of community forest as its timber is utilized for constrction, package box, lighter as well as raw material of pulp and paper. However, there is main problem in sengon plantation, which is boktor (Xystrocera festiva Pascoe) pest attact. In the midgut of boktor larvae it was detected trypsin and α-amylase enzymes activity. Whereas on sengon tree it was reported contains inhibitory substance against trypsin and α-amylase enzymes of boktor larvae. The inhibitory activity was assumed as defense mechanism of sengon tree against the pest attack. In order to clarify the assumption an investigation on the correlation between trypsin and α-amylase inhibitor of sengon with larval growth on an artificial diet is necessary. The experiments aimed at obtaining correlations between the activities of trypsin and α-amylase inhibitors of sengon tree with the growth of boktor larvae, with small (±1,5 cm) and big sizes (±3 cm) on an artificial diet containing respective sengon tree materials.
Keragaman Genetik Populasi Sengon (Paraserianthes falcataria (L) Nielsen) pada Hutan Rakyat di Jawa Berdasarkan Penanda RAPD Ulfah Juniarti Siregar; Ranny Dwita Olivia
Jurnal Silvikultur Tropika Vol. 3 No. 2 (2012): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.3.2.%p

Abstract

Sengon is commonly planted in public forest in Java because it included fast growing species (Santoso 1992). Sengon is multifunction such as for its’s leaf, stem, and root system. However, sengon planting with monoculture system causes it is easily attacked by pest and desease such as stem rot pest (Xystrocera festiva), dumping off, and karat puru. So that, it needs high quality sengon which is produced from improvement program. High genetic diversity is needed to reach improvement program. The aim of this research is to know genetic diversity in or between population of sengon on some public forest in Java. Sengon sample that was obtained from 9 populations in Java with amount 25 population sample. Sengon DNA is extracted with CTAB method and Kit GenElute SIGMA. Data analysis is done by POPGENE program and NTSYS. Observed parameter are expected heterozygote (He), polimorfic locus percentage (PLP), observed alel (na), effective alel (ne), and genetic distance. Expected heterozygote value of entire population is 0.2349. It shows that sengon population in Java has high genetic diversity. Generally, genetic variation is in population (82%) while the different between population is only 18%. Genetic distance dendrogram shows that sengon spread in Java is random, because population that is in one same region (West Java) has near distance wih other province.
Diversity of Pinus merkusii Jungh. et de Vriese of Tapanuli Strain based on Microsatellite Markers Ulfah Juniarti Siregar; I Made Mayun Maha Diputra
Jurnal Silvikultur Tropika Vol. 4 No. 2 (2013): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.4.2.%p

Abstract

Pinus merkusii of Tapanuli strain, which grows naturally in Tapanuli area to the south of Toba Lake, has decreased considerably due to intensive logging. This research aimed at investigating genetic diversity of strain Tapanuli Pine using microsatellite markers on its three populations, i.e. Dolok Tusam Timur, Lobugala, and Parinsoran. Leaf samples were extracted using combined CTAB (cetyl trimethyl ammonium bromide) and DNeasy plant mini kit, then amplified using seven specific microsatellite primers from P. merkusii Aceh strain, i.e. pm01, pm04, pm05, pm07, pm08, pm09a, and pm12. Those primers could amplify polymorphic fragments with different sizes than reported before. Estimation of genetic diversity parameters showed that Lobugala population has the highest heterozygosity (He = 0.4693) followed by Dolok Tusam Timur (He = 0.4614) and Parinsoran (He = 0.4316). Lobugala population was closely related to Parinsoran with 0.0617 genetic distance, and separated from Dolok Tusam Timur by 0.3798 genetic distance. Partition of genetic variation showed that 81% was found within population, and only 18% was among population.Keywords: genetic diversity, microsatellite, Pinus merkusii
Changes on Soil Chemical Characteristics of The Reclamation Ex-Mining Land As A Model at The PT. Antam UBPE Pongkor Ulfah Juniarti Siregar; Jumadin Sidabutar; Chairil Anwar Siregar
Jurnal Silvikultur Tropika Vol. 4 No. 3 (2013): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.4.3.%p

Abstract

High mining activity in the forested land had damaged the forest, that reclamation is necessary to restore the forest conditions as before. This research aims at finding out changes on soil chemistry, and the concentration of Pb and Fe in the soil, and the 10 years old planted rosewood, pine, and walnut trees at the reclamation ex-gold mining land as a model of PT. Antam UBPE Pongkor. Soil analysis at 0–5 cm, 5–15 cm and 15–30 cm depth showed increase soil quality, especially in C-organic content at 0–5 cm, which is much higher than the deeper depth. C-organic content of rosewood stand was 2.08%, pine was 1.04% and walnut was 0.95%. The 10 years old planted trees had absorbed Pb and Fe, of which the highest Pb content was found in walnut roots at 13 ppm, while the highest Fe content was in pine roots at 4933 ppm.Keywords: C-organic, Fe, Pb, reclamation, soil chemistry
GROWTH OF FOUR FAST GROWING TREE SPECIES ON TAILINGS MEDIA FROM GOLD MINING COMPANY PT ANTAM UBPE PONGKOR Ulfah J Siregar; Wirrahma .
Jurnal Silvikultur Tropika Vol. 7 No. 3 (2016): Jurnal Silvikultur Tropika (Suplemen Desember)
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.7.3.S68-S71

Abstract

Tailing from mining activity contains heavy metal that can be managed by phytoremediation. Plant selection to be used in phytoremediation plays important role that determine the success of these activities. The objective of this research is to study the growth of four forest tree species in media containing tailings from gold mining. Four fast growing tree species, i.e. Swietenia macrophylla King., Anthocephalus macrophyllus (Roxb.) Havil., Maesopsis eminii Engl., and Toona sureni (Blume) Merr., and two kinds of growing media, i.e. tailings and mixture of tailings + compost with 3:1 ratio, were used in a Completely Randomized Factorial Design. The growth parameters measured were plant height and diameter, leaf length and width, number of leaves, stomata density, total wet and dry biomass, also root-shoot ratio, and percentage of survival. The results of the research showed that plant types significantly affect all parameters observed. Media treatment had significant effect on total wet and dry biomass only. Interaction between plant types and media gave significant effect only on total wet biomass. Based on survival and growth parameter observed A. macrophyllus gave best performance.Key words: A. macrophyllus, M. eminii, phytoremediation, S. macrophylla, tailings, T. sureni
Co-Authors Adam, Satria Adi Jaya, Adi Adisti Permatasari Putri Hartoyo ADITYA NUGROHO Aditya Nugroho Aditya Nugroho Agus Kholik Agus Setiyono Ahmad Faqih Andi Sukendro Anita, Vilda Puji Dini APRILIYA DAMAYANTI ARIEF BUDIMAN ARIEF BUDIMAN Arief Budiman Arief Budiman Arif Kurnia Wijayanto Ario Damar Aris Tjahjoleksono Aris Tjahjoleksono Bayu Winata Cartealy, Imam Civi Cecep Kusmana Chairil Anwar Siregar Chairil Anwar Siregar Chairil Anwar Siregar Dede J Sudrajat Dede J. Sudrajat Dede J. Sudrajat Dede Jajat Sudrajat Dede Jajat Sudrajat, Dede Jajat DEDE SUDRAJAT Deden D. Matra Deden Derajat Matra DEWI RAHMAWATI Diah Ratnadewi DIMAS ANDRIANTO DINY DINARTI DINY DINARTI Djiono Djiono Djufri Djufri Dodi Nandika Dodik Ridho Nurrochmat EKO AGUS SUYONO EKO AGUS SUYONO Eko Agus Suyono Eko Agus Suyono Elis Nina Herliyana Esti Nurianti Evy Damayanthi Farosandi, Naufal Hilmi Fifi Gus Dwiyanti FITRI INDRIANI Fitta Setiajiati Hamzah, Hamzah Hartati Hartati Hartati, N Sri Hasim HASYYATI SHABRINA Hasyyati Shabrina HENI PNY KOERNIAWAN Henti Rosdayanti Herman Daryono Herman Daryono I Made Mayun Maha Diputra I Wayan Windra Nugraha Ida Theilade Idha Susanti Idha Susanti Idha Susanti Idqan Fahmi INDIRA RIASTIWI IPB, DGB Irdika Mansur Iskandar Z Siregar Iskandar Z. Siregar Iskandar Z. Siregar ISKANDAR ZULKARNAEN SIREGAR Istikorini, Yunik Iswanto Jumadin Sidabutar Lala M Kolopaking Laura Flowrensia Lilik Budi Prasetyo Lilik Maslachah Lina Karlinasari LUCIA TRI SUWANTI Lucia Tri Suwanti Suwanti Lucia Tri Suwanti, Lucia Tri LUKMAN LUKMAN LUKMAN LUKMAN M Agus Setiadi M Iqbal Maulana Ginting M.Pd S.T. S.Pd. I Gde Wawan Sudatha . Ma'mun Sarma Madani, Hilmi Naufal Mahendra Pujiyanto MAMAN TURJAMAN MAMAN TURJAMAN Matra, Deden Derajat MOCHAMAD DONNY KOERNIAWAN Mochamad Donny Koerniawan Mochammad Donny Koerniawan Mohammad Basyuni MUFASIRIN MUFASIRIN MULYANTO N. Sri Hartati Nahrowi NOFITA NUR CAHYANI Noor Farikhah Haneda Nurianti, Esti Nurul Khumaida Oemijati Rachmatsyah Oktariza, Wawan PRADHIPTA OKTAVIANTO Pramisari, Yunita Pramisasi, Yunita Prijanto Pamoengkas PURNAMA HIDAYAT Purwiyatno Hariyadi Puti Awali Saimima Ramadhan, Rafli Ranny Dwita Olivia Rifana, Haikal Zaky Rita Rahmawati Ritonga, Faujiah Nurhasanah Roisatuz Zakiyah Satriawan, Handi Sona Suhartana Sona Suhartana Sri Purwaningsih, Sri Sri Wilarso Budi Suci Rahayu SUDARSONO SUDARSONO SUDARSONO SUDARSONO Sudradjat Sugianto Sugianto Suharsono Suharsono Suharsono Suharsono Suharsono Suharsono Sumiati Supatmi Supatmi Supriyanto . Suria Darma Tarigan Syamsidah Rahmawati, Syamsidah Tedi Yunanto Tedi Yunanto UMI ZAKIYAH UTUT WIDYASTUTI Utut Widyastuti Utut Widyastuti Vilda Puji Dini Anita Widiyatno, Thomas Valentinus Wirrahma . WITJAKSONO WITJAKSONO Yosie Syadza Kusuma ZHAZA AFILILLA Zhaza Afililla Zidan, Mochammad ZULFAHMI ZULFAHMI