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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Ilmu Pertanian Indonesia Jurnal Ilmu dan Teknologi Hasil Hutan Jurnal Penelitian Hutan dan Konservasi Alam Jurnal Penelitian Hasil Hutan Cannarium (Jurnal Ilmu-ilmu Pertanian) Journal of Degraded and Mining Lands Management Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Jurnal Teknik Sipil Indonesian Journal of Chemistry Jurnal Penelitian Sosial dan Ekonomi Kehutanan Jurnal Ilmu dan Teknologi Kayu Tropis Jurnal Jamu Indonesia Jurnal Penelitian Hasil Hutan Wood Research Journal : Journal of Indonesian Wood Research Society Wood Research Journal : Journal of Indonesian Wood Research Society Jurnal Sylva Lestari Makara Journal of Science Jurnal Ilmu Kehutanan Indonesian Journal of Jamu Jurnal Penelitian Hasil Hutan
Lina Karlinasari
Department Of Forest Products, Faculty Of Forestry And Environment, IPB University, Darmaga Campus, Bogor 16680, West Java, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Energy Environmental Science Health Professions Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences Other

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The aim of this study was to evaluate dynamic modulus of elasticity (MOEdyn) of woods after tested those natural durability. Field tests by grave yard test were applied to prove the natural durability of jackfruit and mangium woods in ground contact. The method of non-destructive testing based on ultrasonic wave propagation was carried out to define ultrasonic velocity than that used for evaluating MOEdyn. The result showed that ultrasonic velocity of jackfruit and mangium woods decreased 3% and Lina KARLINASARI; Ina RITA; Istie Sekartining RAHAYU
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 2 No. 1 (2009): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

The aim of this study was to evaluate dynamic modulus of elasticity (MOEdyn) of woods after tested those natural durability. Field tests by grave yard test were applied to prove the natural durability of jackfruit and mangium woods in ground contact. The method of non-destructive testing based on ultrasonic wave propagation was carried out to define ultrasonic velocity than that used for evaluating MOEdyn. The result showed that ultrasonic velocity of jackfruit and mangium woods decreased 3% and 0.5%, respectively after field test. There was a significant difference of MOEdyn value between before and after natural durability testings
Pangsor (Ficus callosa WILLD) and kecapi (Sandoricum kucape MERR) are usually planted in garden and rural forest. The objective of this study was to determine its specific gravity (SG), maximum crushing strength (σc//), longitudinal modulus elasticity (EL), and Poisson’s ratio (n).  The compression test  was conducted referring to  ASTM D143-94(2000) using UTM Instron 3369 which is equipped with two biaxial clip on extensometers.  The result showed that vertical and horizontal position of wood i Lusita WARDANI; Effendi Tri BAHTIAR; Ignasia Maria SULASTININGSIH; Atmawi DARWIS; Lina KARLINASARI; Naresworo NUGROHO; Surjono SURJOKUSUMO
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 4 No. 1 (2011): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

Pangsor (Ficus callosa WILLD) and kecapi (Sandoricum kucape MERR) are usually planted in garden and rural forest. The objective of this study was to determine its specific gravity (SG), maximum crushing strength (σc//), longitudinal modulus elasticity (EL), and Poisson’s ratio (n).  The compression test  was conducted referring to  ASTM D143-94(2000) using UTM Instron 3369 which is equipped with two biaxial clip on extensometers.  The result showed that vertical and horizontal position of wood in the trees statistically significant influenced on SG and σc//.  Horizontal position in Pangsor wood affected its EL, but the other position in both species were not significantly different.  There were poor correlations between SG with EL and σc//.   Poisson’s ratio value of both woods were in a range 0.0045 – 0.275 for longitudinal-radial direction (nLR), and 0.0151 – 0.1289 for longitudinal-tangensial direction (nLT).   Keywords :    Longitudinal Modulus of Elasticity, Maximum Crushing Strength, Poisson’s Ratio, Pangsor wood, Kecapi wood
The use of modern devices and human activity today have increased noise problem. The applicaton of acoustic panels in building construction could be as an alternative to overcome this problem. The purpose of this study was to investigate acoustical properties of sound absorption coefficient and sound transmission loss from wood wool or excelsior board. Three fast growing species, sengon (Paraserianthes falcataria), african wood (Maesopsis eminii), and mangium (Acacia mangium) lumbers were proces Lina KARLINASARI; Dede HERMAWAN; Akhiruddin MADDU; Bagus MARTIANTO
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 4 No. 1 (2011): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

The use of modern devices and human activity today have increased noise problem. The applicaton of acoustic panels in building construction could be as an alternative to overcome this problem. The purpose of this study was to investigate acoustical properties of sound absorption coefficient and sound transmission loss from wood wool or excelsior board. Three fast growing species, sengon (Paraserianthes falcataria), african wood (Maesopsis eminii), and mangium (Acacia mangium) lumbers were processed to obtain wool particles. Two different categories of board density and types of resins were used in this study. Sound absorption coefficient was determined using the impedance tube method, while that for the determination of transmission loss based on the reverberation room method. The results showed that the board density of 0.8 g/cm3 had good sound absorption for low and high frequencies compared with board of 1.0 g/cm3. In the medium frequencies those boards reflected the sound. Wood wool cement bonded board was good in sound absorption for high frequency. In the range low to high frequencies, the boards with isocyanate adhesive were good in transmission loss value compared with cement bonded boards. Meanwhile, the boards with density of 1.0 g/cm3 possessed transmission loss value higher than board of 0.8 g/cm3.   Keywords:     acoustic panel, wood wool board, fast growing species, sound absorption, transmission loss
Near Infrared (NIR) Spectroscopy to Predict Physical Properties of Acacia mangium at Three Different Age Classes Lina Karlinasari; Merry Sabed
Wood Research Journal Vol 4, No 1 (2013): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2013.4.1.7-12

Abstract

Near Infrared (NIR) spectroscopy has been used to predict several properties of wood. This is one of the nondestructive testing (NDT) methods providing fast and reliable wood characterization analysis which can be applied in various manufacture industry, included forest sector, in control and process monitoring task. Moisture content and wood density are important properties related to strength properties. The aim of this study was to evaluate NIR technique in obtaining calibration models for determining moisture content and wood density of Acacia mangium in the age of 5, 6, 7 years-old. Spectra were measured in both solid and ground wood samples. Laboratory testing of physical properties were determined by volumetric and gravimetric methods. The laboratory values were correlated with the NIR spectra using multivariate analysis statistic of Partial Least Square (PLS). The calibration-validation model of this relationship was evaluated by using the coefficient of determination (R2), root means square error of calibration (RMSEC) and cross-validation (RMSECV) values. Generally, a better accuracy was obtained by using calibration model of ground wood compared to that of solid wood samples. At age of 7 years-old, the R2 allowed the use of NIR spectra of solid samples to develop calibration and validation model, especially for wood density. Based on ratio of performance to deviation (RPD) and RMSE, ground samples demonstrated a higher value of RPD, RMSEC, and RMSECV compared to solid wood for all properties.
PENILAIAN POTENSI LAHAN KRITIS UNTUK PENGEMBANGAN HUTAN TANAMAN ENERGI DI LOMBOK TIMUR Budi Hadi Narendra; Widiatmaka Widiatmaka; Cecep Kusmana; Lina Karlinasari; Machfud Machfud
Jurnal Penelitian Hutan dan Konservasi Alam Vol 16, No 2 (2019): 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.2019.16.2.119-131

Abstract

Meningkatnya penggunaan energi terbarukan yang bersumber dari biomassa kayu sudah seharusnya dipenuhi melalui pengembangan hutan tanaman energi. Penelitian ini bertujuan menganalisis potensi lahan kritis untuk pengembangan hutan tanaman energi di Kabupaten Lombok Timur. Tingkat kesesuaian lahan kritis yang tersedia dianalisis berdasarkan 20 kriteria menggunakan metode fuzzy linguistic ordered weighted averaging (FLOWA) berbasis sistem informasi geografis (SIG). Hasil penelitian menunjukkan dari 52.623 ha lahan kritis di Lombok Timur, luasan yang tersedia untuk pengembangan hutan tanaman energi adalah 8.422 ha. Pada skenario sangat optimis, keseluruhan lahan kritis tersedia tersebut sangat sesuai untuk dikembangkan. Sebaliknya pada skenario sangat pesimis, 70% luas lahan kritis tersebut kurang sesuai untuk dikembangkan, sedangkan sisanya tidak sesuai. Pada skenario netral, 6.416,9 ha atau 76% dari lahan kritis yang tersedia sangat sesuai untuk dikembangkan, sedangkan sisanya dapat dikategorikan cukup sesuai. Dalam pengembangan hutan tanaman energi, harus diutamakan pada lokasi-lokasi dengan tutupan semak belukar atau lahan terbuka, dengan skema pengembangan disesuaikan dengan status lahannya
EVALUASI CACAT PENGERINGAN DAN PEMESINAN PADA EMPAT JENIS KAYU CEPAT TUMBUH TERMODIFIKASI PANAS Ulfa Adzkia; Trisna Priadi; Lina Karlinasari
Jurnal Penelitian Hasil Hutan Vol 37, No 3 (2019): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (24022.219 KB) | DOI: 10.20886/jphh.2019.37.3.204-216

Abstract

Perlakuan panas merupakan salah satu metode yang dapat meningkatkan kualitas kayu termasuk untuk kayu cepat tumbuh. Namun perlakuan tersebut dapat menyebabkan cacat pengeringan serta perubahan sifat pemesinan setelah perlakuan panas. Tujuan penelitian ini untuk mengevaluasi pengaruh variasi jenis kayu dan waktu pemanasan terhadap adanya cacat pengeringan dan pemesinan kayu cepat tumbuh. Jenis kayu cepat tumbuh yang digunakan adalah jati, mangium, jabon dan sengon. Perlakuan panas dilakukan pada suhu 165ºC dengan variasi waktu 0 jam (kontrol), 2 jam dan 6 jam. Hasil penelitian menunjukkan bahwa kadar air dan kerapatan kayu menurun setelah perlakuan panas. Perlakuan panas berhasil menurunkan kadar air 57% dan menyebabkan penurunan kerapatan kayu hingga 20% dibandingkan dengan kayu kontrolnya. Cacat pengeringan retak ujung pada jati, mangium, jabon dan sengon meningkat setelah perlakuan panas selama 2 dan 6 jam. Di sisi lain, cacat retak permukaan pada jati, mangium, sengon dan jabon berkurang. Cacat setelah menerapkan kegiatan pemesinan yaitu cacat pengamplasan, penyerutan, pembentukan, dan pengeboran menurun pada jati, mangium, jabon dan sengon setelah perlakuan panas 2 dan 6 jam. Jati adalah spesies kayu terbaik dalam hal kualitas pemesinan setelah perlakuan panas diikuti oleh jabon, mangium, dan sengon. Pada suhu 165°C dalam 2 jam dianggap sebagai waktu yang tepat untuk perlakuan panas dalam hal memperoleh cacat minimal pengeringan dan pemesinan.
Pengaruh Pengawetan Kayu Terhadap Kecepatan Gelombang Ultrasonik dan Sifat Mekanis Lentur serta Tekan Sejajar Serat Kayu Acacia Mangium Willd Lina Karlinasari; Maya Rahmawati; TR. Mardikanto
Jurnal Teknik Sipil Vol 17 No 3 (2010)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2010.17.3.2

Abstract

Abstrak. Penelitian ini bertujuan untuk mengetahui pengaruh perlakuan pengawetan kayu terhadap kecepatan gelombang ultrasonik, sifat mekanis lentur kayu, dan kekuatan tekan sejajar serat kayu. Kayu yang digunakan adalah jenis Acacia mangium yang diketahui mulai banyak digunakan karena kekuatannya yang yang cukup baik (kelas kuat II-III) tetapi memiliki keawetan alami yang cukup rendah (kelas awet II-III). Bahan pengawet yang digunakan adalah CCB (chrome, copper, boron) dengan konsentrasi 4%, 7%, 10% dan metode yang diapikasikan adalah rendaman dingin dan vakum tekan. Hasil penelitian menujukkan bahwa metode vakum tekan berpengaruh secara nyata menurunkan nilai kecepatan gelombang ultrasonik, kekuatan lentur, dan tekan sejajar serat kayu tetapi tidak berpengaruh nyata terhadap nilai modulus elastisitas kayu. Konsentrasi bahan pengawet berpengaruh secara nyata terhadap nilai retensi dan penetrasi bahan pengawet tetapi tidak berpengaruh nyata terhadap kecepatan gelombang ultrasonik dan sifat mekanis di atas. Kecepatan gelombang ultrasonik melalui nilai MOE dinamis yang diperoleh memiliki koefisien korelasi yang baik untuk menduga nilai modulus elastisitas statis dan kekuatan kayu.Abstract. This paper presents the results of a study that investigated the effect of preservation treatment on ultrasonic velocity, bending strength and compressive strength parallel to grain. Acacia mangium wood which has moderate strength and low-moderate natural durability were used in this study. Retention and penetration of preservative compound on wood as well as ultrasonic velocity and mechanical properties were determined as impact of using three concentrations of waterborne preservatives CCB (chrome, copper, boron) and two preservation methods (cold-dipping and pressure-vacuum). The result showed that pressure-vacuum method significantly reduced ultrasonic velocity, bending strength and compressive strength parallel to grain of wood, but no significance influence on modulus of elasticity (MOE). Meanwhile, concentrations of preservative compounds were no significance effect on those properties except on retention and penetration. Ultrasonic velocity through dynamic MOE had close correlation to predict static MOE and wood strength.
Rasio Ikatan Pembuluh sebagai Substitusi Rasio Modulus Elastisitas pada Analisa Layer System pada Bilah Bambu dan Bambu Laminasi Effendi Tri Bahtiar; Naresworo Nugroho; Lina Karlinasari; Atmawi Darwis; Surjono Surjokusumo
Jurnal Teknik Sipil Vol 21 No 2 (2014)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2014.21.2.6

Abstract

Abstrak. Anatomi bambu disusun oleh sel-sel yang heterogen. Komponen anatomi bambu yang memberikan sumbangan terbesar pada sifat mekanisnya adalah ikatan pembuluh, sehingga kerapatan ikatan pembuluh dapat digunakan sebagai variabel dasar untuk menganalisa sifat mekanis bambu. Kerapatan ikatan pembuluh bergradasi dari tepi hingga ke dalam bambu sehingga dapat diturunkan suatu fungsi linier ataupun non linier sebagai pendekatannya. Rasio modulus elastisitas (E) yang lazim digunakan pada metode transformed cross section, pada penelitian ini dicoba diganti dengan rasio ikatan pembuluh dengan asumsi bahwa keduanya adalah ekuivalen. Hasil penelitian memperlihatkan bahwa terdapat nilai korelasi Pearson yang tinggi antara hasil teoritis dan hasil empiris, sedangkan hasil uji t-student data berpasangan menunjukkan bahwa tidak ada perbedaan yang signifikan antara keduanya. Dengan demikian model transformasi yang diturunkan dapat digunakan untuk melakukan analisa layer system pada bilah bambu maupun bambu laminasi dengan hasil yang dapat dipertanggungjawabkan. Dari ketiga model transformasi terpilih (linier, logaritmik, dan power) model power adalah model yang terbaik karena menghasilkan nilai yang paling mendekati data empiriknya.Abstract. Bamboo anatomy is constructed from many types of cells. Vascular bundles are the cells which give the highest contribution to the bamboo strength, thus the density distribution of vascular bundles could be used as the main variable for analyzing the layer system of bamboo strip and laminated bamboo. The density of vascular bundles distribution degrade from outer to inner in a regular manner which could be fitted by linear and nonlinear function. Ratio of modulus of Elasticity (E) which widely used in transformed cross section method for analyzing the layered system was substituted by ratio of density distribution of vascular bundles within assumption that both are highly correlated. The data in this study proved that there was high Pearson's correlation between the theoretical and empirical result, and the paired t-student test also showed both were not significantly different; thus the new method could be applied in very good result. There are three model applied in this study namely linear, logarithm, and power. Power model is the best among others since its theoretical results the nearest estimation to the empirical measurement.
Pengaruh Komponen Kimia dan Ikatan Pembuluh terhadap Kekuatan Tarik Bambu Effendi Tri Bahtiar; Naresworo Nugroho; Surjono Suryokusumo; Dwi Premadha Lestari; Lina Karlinasari; Deded Sarip Nawawi
Jurnal Teknik Sipil Vol 23 No 1 (2016)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2016.23.1.4

Abstract

Abstrak. Bambu merupakan salah satu contoh material komposit alami yang tersusun atas beraneka ragam sel. Sel-sel fiber yang tersusun menjadi ikatan pembuluh diyakini merupakan sel yang paling bertanggung jawab terhadap kekuatan bilah bambu. Selain jumlah ikatan pembuluh, kekuatan tarik bambu juga dipengaruhi oleh kandungan komponen kimia dan bagian ruas/buku. Penelitian ini menunjukkan bahwa semakin banyak jumlah ikatan pembuluh, maka kekuatan tarik bambu semakin besar. Kandungan lignin meningkatkan kekuatan tarik pada bagian ruas secara proporsional (linier), bahkan kuadratik pada bagian buku. Peningkatan kandungan lignin dalam selang yang ditemukan dalam penelitian ini (33%) selalu meningkatkan kekuatan tarik bilah bambu sehingga titik balik maksimum tidak dapat ditemukan. Tingginya nilai korelasi kekuatan tarik dengan proporsi alpha selulosa terhadap holoselulosa pada bagian ruas memperlihatkan pentingnya peranan proporsi alpha selulosa tersebut, meskipun prosedur best subset regression tidak membacanya akibat terjadinya autokorelasi. Abstract. Bamboo is natural composite material which is built from many types of cells. Fibers cells which are bundled become vascular bundles have highest contribution toward the strength of bamboo split among others. Besides the amount of vascular bundles, the bamboo split strength is also determined by chemical component of cell walls and its position (internodes/node). This research reported that the tensile strength has positive correlation with the amount of vascular bundles. If the amount vascular bundles increase, then the tensile strength also increases. The increasing of lignin contents in cell wall proportionally and quadratically increases the tensile stress of internodes and node of bamboo split, respectively. This research did not found the maximum stationer  point of quadratic equation for lignin content effect toward bamboo split tensile strength, thus the tensile strength always increase along with the lignin content in this research range (<33%). Correlation value between tensile strength and ratio of alpha cellulose to holocellulose is high which prove that alpha cellulose highly contribute to the tensile strength even though best subset regression procedure could not identified this phenomenon because of its autocorrelation occurrence.
Karakteristik Kekuatan Leleh Lentur Baut Besi dengan Beberapa Variasi Diameter Baut Evalina Herawati; Sucahyo Sadiyo; Naresworo Nugroho; Lina Karlinasari; Fengky Satria Yoresta
Jurnal Teknik Sipil Vol 24 No 3 (2017)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jts.2017.24.3.4

Abstract

AbstrakBaut merupakan salah satu jenis alat sambung mekanis atau pengencang yang banyak digunakan dalam sambungan kayu. Penelitian ini bertujuan untuk menentukan kekuatan leleh lentur (Fyb) dari tiga ukuran diameter baut besi yang umum digunakan untuk sambungan kayu dan satu ukuran diameter baut baja sebagai pembanding. Spesifikasi baut yang digunakan dilihat dari dimensi dan komposisi penyusunnya. Nilai Fyb baut diperoleh dari pengujian momen leleh lentur dengan mengacu pada standar ASTM F1575. Hasil pengujian menunjukkan baut besi yang digunakan berasal dari bahan baja karbon rendah sedangkan baut baja berasal dari bahan baja karbon sedang. Nilai Fyb baut baja lebih tinggi dibandingkan baut besi. Nilai Fyb baut besi diameter 1/2 inci berbeda nyata dengan nilai baut diameter 5/8 dan 3/4 inci. Nilai Fyb ketiga diamater baut berada di atas nilai Fyb baut yang tercantum dalam SNI 7973:2013 tentang Spesifikasi desain untuk konstruksi kayu.AbstractBolt is one of the mechanical fasteners that are widely used in wood connections. This study aims to determine the bending yield strength (Fyb) of three measures of bolt diameter made from iron which commonly used for the connection of wood and one measure of bolt diameter made from steel as a comparison. Specifications of bolts used can be seen from the dimensions and composition of the constituent. Testing of the bending yield strength was conducted according to ASTM F1575. The results showed that iron bolts used comes from low carbon steel, while steel bolts derived from medium carbon steel materials. Fyb value of steel bolts was higher than iron bolt. Fyb value of 1/2 inch diameter iron bolts was significantly different from the value of the bolts 5/8 and 3/4 inch in diameter. The Fyb value of three bolt diameter were above the Fyb value listed in SNI 7973:2013 concerning design specification for wood constructions.
Co-Authors Adi Widyanto Adisti Permatasari Putri Hartoyo Adrin, Adrin Agus Kholik Akhiruddin Maddu Akrom, Akrom Alfira Ramadhani Putri Aminuyati Anas Miftah Fauzi Andi Sukendro Anita Firmanti Arif Kurnia Wijayanto Arinana Arinana Aris Purwanto Asep Denih Ati Dwi Nurhayati Atmawi Darwis Atmawi DARWIS Bagus MARTIANTO Baihaqi, Hans Budi Hadi Narendra Davinsy, Rynaldi Decsa Medika Hertanto Dede Hermawan Dede J Sudrajat Deded Sarip Nawawi Deviro, Sonya Okta Dikhi Firmansyah Diposani, Diva Putri Diva Putri Diposani Djiono Djiono Djoko Santoso Djoko Santoso Dodi Nandika Dwi Premadha Lestari Effendi Tri Bahtiar Erizal Eti Rohaeti Eti Rohaeti Evalina Herawati Fengky Satria Yoresta Fitta Setiajiati Fredisa, Yoga Gunawan Santosa Gustian Rama Putra Hans Baihaqi Hari Wijayanto Hendra Kurniawan Heni Habibah I Nyoman Jaya Wistara I Wayan Darmawan Ignasia Maria Sulastiningsih Ina RITA Irmanida Batubara Iskandar Z Siregar ISKANDAR ZULKARNAEN SIREGAR Istie Rahayu Jeki, Jeki Kaswanto, Regan L. Leonard D D Liliefna Lestari, Dwi Premadha Lucia Dhiantika Witasari Lucia Dhiantika Witasari Lucia Dhiantika Witasari, Lucia Dhiantika Lusita WARDANI M. Farouq Iksan Machfud Machfud Madani, Hilmi Naufal mahdi mubarok Maryam Jamilah Maya Rahmawati Maya Rahmawati, Maya Merry Sabed Merry Sabed Mohammad Muslich Muhammad F Ikhsan Murodif, Atfal Naresworo Nugroho Nelly Anna Nelly Anna Nur Alam Nurul Asmarani Damayanti Rahardjo Putri, Lora Septrianda Rachmayanti, Yanti Reza Ro&#039;isatul Umma Rifana, Haikal Zaky Rima Vera Ningsih Rita Rahmawati S.Pd. M Kes I Ketut Sudiana . Satriawan, Handi Siti Badriyah Rushayati So, Kristianto Wibison Solly Aryza Sri Mulatsih Sri Wilarso Budi Sucahyo Sadiyo Sulistyono Sulistyono Supriyanto Supriyanto Surjono Surjokusumo Surjono Surjokusumo Surjono Surjokusumo Surjono Suryokusumo Suryokusumo, Surjono Tarcisius Rio Mardikanto Tedi Yunanto Telnoni, Sipora Petronela TR. Mardikanto TR. Mardikanto, TR. Trisna PRIADI Trisni Untari Dewi Ulfa Adzkia Ulfah Juniarti Siregar Widiatmaka Yanti Rachmayanti Yudi Chadirin Yusup Amin