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All Journal PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Jurnal Sylva Scienteae Jurnal Pengabdian Ilung (Inovasi Lahan Basah Unggul) JURNAL HUTAN TROPIS Abdimas Mandalika
Budi Sutiya
Fakultas Kehutanan Universitas Lambung Mangkurat
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Pemanfaatan Limbah Sagu Sebagai Bahan Pakan Ternak di Desa Pemakuan Laut, Sungai Tabuk, Kabupaten Banjar, Kalimantan Selatan Wiwin Tyas Istikowati; Budi Sutiya; Sunardi Sunardi
PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol 6 No 2 (2021): PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institute for Research and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/pengabdianmu.v6i2.1822

Abstract

Sago plants can be used from leaves, fronds, and stems with the main product of sago starch from the stem. In the production process, the sago plants used are 7-8 years old. The productivity of sago palms in Pemakuan Laut village is around 200 kg starch/stem with a selling price of Rp. 3,500/kg in wet conditions and Rp. 7,500/kg of dry sago flour. Sago processing waste has not been utilized yet by the community even though the waste can still be used for other purposes such as animal feed, hardboard, fuel, plant growth media, and fertilizer. Sago waste is a problem in the Pemaku Laut village environment because the waste has accumulated while the location for disposing of it is limited. Therefore, in this community service activity training was carried out in making animal feed (poultry) using sago dregs. The method used is fermentation. From the activities carried out, it was known that all the participants had started to utilize sago dregs, but the preliminary process had not been carried out, the dregs were directly given to livestock. In this training, sago dregs processing is carried out using the fermentation process. From the training, it can be seen that the community already knows the process of processing the dregs before giving it livestock to increase its nutritional value.
ANALISIS KANDUNGAN KIMIA KAYU JELUTUNG (Dyera costulata) BERDASARKAN POSISI KETINGGIAN BATANG Dahlia Nuraini Pasaribu; Wiwin Tyas Istikowati; Budi Sutiya
Jurnal Sylva Scienteae Vol 5, No 2 (2022): Jurnal Sylva Scienteae Volume 5 No 2 Edisi April 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jss.v5i2.5365

Abstract

This study aims to determine the color of a sample qualitatively on jelutung wood including the base, middle, tip, and bark. Changes in color using a photometer are not only found in every type of wood, but also affect the position of the height on the stem. Color changes are generally influenced by extractive composition, temperature, humidity, light, and storage conditions (Sahin 2011). The color of the wood needs to be considered for pulp and paper, because the brighter the color of the wood, the better the quality of the pulp and paper produced. Jelutung wood has a smooth texture, the direction of the fibers is straight, and the slippery surface is slightly glossy so it is suitable for writing paper. And it can also be used as pulp and paper with the addition of chemicals and advanced treatment. Color change usually occurs due to the presence of substances that react before and after treatment on a sample.Penelitian ini bertujuan untuk mengetahui warna suatu sampel secara kualitatif  pada kayu jelutung meliputi pangkal, tengah, ujung, dan kulit. Perubahan warna menggunakan fotometer  pengukurannya tidak juga  terdapat pada suatu jenis kayu yang berbeda, tetapi juga berpengaruh pada letak ketinggian pada batang. warna yang berubah pada umumnya dipengaruhi oleh sifat komposisi dari kadar ekstraktif, suhunya, kelembabannya, cahaya matahari, dan kondisi dimana sampel kita simpan (Sahin 2011). Kayu yang berwarna perlu diperhatikan pada pulp dan kertas, sebab warna kayu yang semakin cerah akan menentukan kualitas pulp dan kertas yang bagus pula. Kayu jelutung memiliki tekstur halus, arah seratnya lurus dan permukaan licin sedikit mengkilap sehingga cocok diperuntukkan sebagai kertas tulis. Dan juga bisa diperuntukkan menjadi kertas dan pulp dengan menambahkan bahan bahan kimia juga dilakukan perlakuan lebih lanjut. Colour Change atau perubahan warna biasa terdeteksi sebab terdapatnya kandungan yang bereaksi antara zat sesudah dan sebelum perlakuan pada sampel.
PENGARUH PEMBERIAN PUPUK TERHADAP PRODUKSI GETAH KARET (Hevea brasiliensis) DI DESA TAJAU PECAH KECAMATAN BATU AMPAR KABUPATEN TANAH LAUT Eko Wahyuni; Muhammad Faisal Mahdie; Budi Sutiya
Jurnal Sylva Scienteae Vol 5, No 1 (2022): Jurnal Sylva Scienteae Volume 5 No 1 Edisi Februari 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jss.v5i1.5046

Abstract

This study aims to analyze the application of chemical fertilizers (NPK) to the production of rubber latex, to analyze the application of organic fertilizer SUPERNASA to the production of rubber latex and to analyze the comparison of the application of fertilizer SUPERNASA to the production of rubber latex. The application of NPK fertilizer to PB20 rubber resulted in an average total of rubber latex of 31.36 grams while IRR39 rubber produced an average total of rubber latex of 29.98 grams, giving organic supernase fertilizer to PB20 rubber resulted in a total rubber sap of 29.34 grams while the IRR39 rubber produces rubber sap of 28.44 grams. The treatment without fertilizer application on PB20 rubber produced 23.78 grams of rubber latex, while the IRR39 rubber was 21.44 grams. The treatment with the addition of fertilizer resulted in a higher amount of rubber latex, and the PB20 type of rubber produced greater rubber latex than the IRR39 rubber type with or without treatment.Penelitian ini bertujuan untuk menganalisis pemberian pupuk kimia (NPK) terhadap produksi getah karet (lateks), menganalisis pemberian pupuk SUPERNASA organik terhadap produksi getah karet (lateks) dan menganalisis perbandingan pemberian pupuk SUPERNASA terhadap produksi getah karet (lateks). Pemberian pupuk NPK pada karet PB20 menghasilkan total rata-rata getah karet  sebesar 31,36 gram sedangkan pada karet IRR39 menghasilkan total rata-rata getah karet sebesar  29,98 gram, Pemberian pupuk supernasa organik pada karet PB20 menghasilkan total getah karet sebesar 29,34 gram sedangkan pada karet IRR39 menghasilkan getah karet sebesar 28,44 gram, Perlakuan tanpa pemberian pupuk pada karet PB20 mengasilkan getah karet sebesar 23,78 gram sedangkan pada  karet IRR39 sebesar 21,44 gram, Pemberian perlakuan dengan penambahan pupuk menghasilkan  jumlah getah karet yang lebih tinggi, dan Jenis karet PB20 menghasilkan getah karet lebih besar dibandingkan dengan jenis karet IRR39 dengan atau tanpa perlakuan.
KARAKTERISTIK BRIKET ARANG CAMPURAN ARANG AKASIA DAUN KECIL (Acacia auliculiformis) DAN ARANG ALABAN (Vitex pubescens vhal) Fadillah Yusma Sugiyati; Budi Sutiya; Yuniarti -
Jurnal Sylva Scienteae Vol 4, No 2 (2021): Jurnal Sylva Scienteae Volume 4 No 2 Edisi April 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (518.153 KB) | DOI: 10.20527/jss.v4i2.3337

Abstract

Petroleum is an energy that cannot be renewed, but in everyday life, fuel oil is still the main choice so that it will recult in depletion of petroleum reserves. This study aims to analyze the quality of the charcoal briquette mixture of small leaf acacia wood charcoal whit a mixture of alaban wood charcoal. Parameters tested based on (ASTM D 5142 – 02). Charcoal briquette quality result obtained using Indonesian state standards (Indonesian National Standards – SNI). The results of research from small leaf acacia charcoal and alaban charcoal resulted in the average value of moisture content testing, density testing, ansh content testing, flight substance testing bound carbon content testing and calorific value testing. Testing of moisture content, density, ash content and calorific value met Indonesian standards, while testing for aerobic substances and bound carbon content did not meet Indonesian standards. The best quality charcoal briquettes that meet all the criteria of the Indonesian state standards (Indonesian National Standards – SNI) in treatment E (75% alaban charcoal and 25% small leaf acacia charcoal). The results obtained indicate that each treatment differences in the composition of charcoal powder have a significant effect on each parameter such as moisture content, density, ash content, flying matter, carbon content and calorific value.Keywords: Energy; Brike; Acacia; Alaban
UJI FITOKIMIA TUMBUHAN CEMARA GUNUNG (Casuarina junghuniana), MERAMBUNG (Vernonia arborea), DAN LIMPASU (Baccaurea lanceolata) DI KAWASAN HUTAN DENGAN TUJUAN KHUSUS ULM Muhammad Muhammad; Budi Sutiya; Yuniarti Yuniarti
Jurnal Sylva Scienteae Vol 4, No 3 (2021): Jurnal Sylva Scienteae Volume 4 No 3 Edisi Juni 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (395.216 KB) | DOI: 10.20527/jss.v4i3.3747

Abstract

The purpose of this study is to qualitatively identify active chemical compounds namely the content of alkaloids, flavonoids, steroids, triterpenoids, tannins, saponins, and quinons in cemara gunung, merambung and limpasu. Simplisia retrieval and processing of cemara gunung, merambung, and limpasu parts of stems, roots, bark and leaves is taken in KHDTK ULM. Existing materials are then given treatment until it becomes powder for further phytochemical tests according Harbone (1978). Phytochemical testing with phytochemical screening methods conducted component tests of active chemical compounds including alkaloids, flavonoids, steroids, tritrpenoids, tannins, saponins, and quinons. Phytochemical qualitative test results (screening) are processed in the form of data tabulation. Based on the research that has been done, the most widely found active compounds are Steroid compounds, almost in all parts of the cemara gunung, merambung, and limpasu except on the roots of mountain firs, while tanin there are all at  the stems, roots, and skin of the limpasu. The active compound Flavonoids are not found at all in all parts of cemara gunung, merambung, and limpasu. Active compounds Alkaloids, Triterpenoids, Saponins, and Quinons are found only a few in the stems, roots, skin, and leaves of cemara gunung, merambung, and limpasu.Tujuan dari penelitian ini ialah untuk mengidentifikasi secara kualitatif senyawa kimia aktif yaitu kandungan alkaloid, flavonoid, steroid, triterpenoid,tanin, saponin, dan quinon pada tumbuhan cemara gunung, merambung dan limpasu. Pengambilan dan Pengolahan Simplisia dari pohon cemara gunung, merambung, dan limpasu bagian batang, akar, kulit dan daun diambil di KHDTK ULM. Bahan yang sudah ada lalu diberikan perlakuan hingga menjadi serbuk untuk selanjutnya dilakukan uji fitokimia menurut Harbone (1978). Pengujian Fitokimia dengan metode skrining fitokimia yang dilakukan uji komponen senyawa kimia aktifnya yang meliputi alkaloid, flavonoid, steroid, tritrpenoid, tanin, saponin, dan quinon. Hasil uji kualitatif (skrining) fitokimia diolah dalam bentuk tabulasi data. Berdasarkan penelitian yang telah dilakukan, senyawa aktif yang paling banyak ditemukan adalah senyawa Steroid, hampir di semua bagian tumbuhan cemara gunung, merambung, dan limpasu kecuali pada bagian akar cemara gunung, sedangkan senyawa Tanin ada pada semua bagian batang, akar, dan kulit limpasu. Senyawa aktif Flavonoid tidak ditemukan sama sekali pada semua bagian tumbuhan cemara gunung, merambung, dan limpasu. Senyawa aktif Alkaloid, Triterpenoid, Saponin, dan Quinon ditemukan hanya beberapa di bagian batang, akar, kulit, dan daun tumbuhan cemara gunung, merambung, dan limpasu. 
PENGERINGAN KAYU KARET (Hevea brasiliensis) DENGAN METODE RADIASI MATAHARI (GREEN HOUSE) UNTUK TUJUAN PENGAWETAN KAYU Nur Afik Bagustiana; Wiwin Tyas Istikowati; Budi Sutiya
Jurnal Sylva Scienteae Vol 4, No 4 (2021): Jurnal Sylva Scienteae Volume 4 No 4 Edisi Agustus 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (380.016 KB) | DOI: 10.20527/jss.v4i4.3943

Abstract

This study aims to determine the optimal drying time of rubber wood (Hevea brasiliensis) related to preservation by the method of hot and cold immersion using boric acid material so as to prolong the use of wood and also reduce costs and can be used as a reference in research. The parameters tested in the preservation of wood are theoretical absorption and retention values. The optimal drying time of rubber wood (Hevea brasiliensis) for the preservation process of the absorption value and theoretical retention by the method of hot and cold immersion using boric acid material is at 2 weeks drying time. Factors that influence the absorption and retention are caused by water content and length of immertionPenelitian ini bertujuan untuk mengetahui waktu pengeringan kayu karet (Hevea brasiliensis) yang optimal terkait pengawetan dengan metode perendaman panas dingin menggunakan bahan asam borat sehingga dapat memperpanjang pemakaiaan kayu dan juga menekan biaya yang dikeluarkan serta bisa dijadikan acuan dalam penelitian. Parameter yang diuji dalam pengawetan kayu adalah nilai absorbsi dan retensi teoritis. Waktu optimal pengeringan kayu karet (Hevea brasiliensis) untuk proses pengawetan dari nilai absorbsi dan retensi teoritis dengan metode perendaman panas dingin menggunakan bahan asam borat yaitu pada lama pengeringan 2 minggu. Faktor yang mempengaruhi nilai absorbsi dan retensi pada pengawetan kayu disebabkan oleh kadar air kayu dan lama perendaman
PENGERINGAN KAYU KARET (Hevea brasiliensis) DENGAN METODE RADIASI MATAHARI (GREEN HOUSE) Wiwin Tyas Istikowati; Nur Afik Bagustiana; Budi Sutiya
Jurnal Hutan Tropis Vol 8, No 3 (2020): Jurnal Hutan Tropis Vol 8 No 3 edisi November 2020
Publisher : Lambung Mangkurat University-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (822.311 KB) | DOI: 10.20527/jht.v8i3.9634

Abstract

The aim of this study is to analyze the optimal drying time of rubber wood (Hevea brasiliensis) in direct drying in the sun and by a solar kiln (green house). This research is expected to provide information on optimal drying time on natural drying directly under sunlight (solar radiation) and with kiln (Green House) to prolong the utilization of wood and reduce the costs. The parameters tested in this study are water content, density, drying rate, shrinkage, and color change. The results on optimal drying of rubber wood at 6 weeks drying time either in drying under direct sunlight or solar kiln in the green house.
KARAKTERISTIK ANATOMI KAYU JELUTUNG (Dyera costulata) DARI HUTAN TANAMAN RAKYAT DI KALIMANTAN TENGAH, INDONESIA Lisa Andriana Kristy; Wiwin Tyas Istikowati; Budi Sutiya
Jurnal Sylva Scienteae Vol 5, No 4 (2022): Jurnal Sylva Scienteae Vol 5 No 4 Edisi Agustus 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jss.v5i4.6150

Abstract

The anatomical characteristics of jelutung wood come from the forests of common plants region, village of Kelampangan, Sebangau district, Palangka Raya city, Central Kalimantan, Indonesia is observed on this study for the purpose of determining the final use of jelutung timber. The sticks are taken at every 1 cm interval from the pith, middle and near the skin on the three parts, the base and the end of which a diskis 5 cm thick. The sample is carried through a process of maseration to get the results of the fiber dimensions and growing trend from the growths to the skin. The length of fibers on an average of 0,53 mm with a trend toward rising.Vesel’s length at an average of 0,34 mm shows significant variation patterns in value range of 0,002-0,040 mm. The fibers’ average diameter at 11,29 µm has a fairly significant variation pattern in the range of 0,22-3,37 µm and is the medium  diameter wood category. The lumen diameter with a average of 8,15 µm and a relatively significant variation pattern of 0,17-1,77 µm. Thick cell walls with an average of 1,37 µm and significant pattern increases at 0,02-0,38 µm.Karakteristik anatomi dari kayu jelutung berasal dari kawasan Hutan Tanaman Rakyat desa Kelampangan, Kecamatan Sebangau, Kota Palangka Raya, Kalimantan Tengah diamati pada penelitian ini dengan tujuan untuk menentukan penggunaan akhir kayu jelutung. Potongan kayu diambil setiap 1 cm interval dari empulur ke kulit pada tiga bagian yaitu pangkal, tengah, dan ujung dimana setap disk memiliki tebal 5 cm. Sampel dilakukan proses maserasi untuk mendapatkan hasil dimensi serat dan kenaikan tren dari empulur menuju kulit. Panjang serat yang berada pada rata-rata yang bekisar 0,53 mm dengan tren mengarah naik. Panjang vesel dengan rata-rata 0,34 mm menunjukan pola variasi yang signifikan dengan kisaran nilai 0,002-0,040 mm. Diameter serat dengan rata-rata 11,29 µm memiliki pola variasi cukup signifikan dengan kisaran 0,22-3,37 µm dan termasuk dalam kategori kayu dengan diameter sedang. Diameter lumen dengan rata-rata sebesar 8,15 µm dan kenaikan pola variasi yang relatif signifikan dengan nilai sebesar 0,17-1,77 µm. Tebal dinding sel dengan rata-rata 1,37 µm dan kenaikan pola yang signifikan diangka 0,02-0,38 µm.
ANALISIS BEBERAPA SENYAWA METABOLIT SEKUNDER PADA TUMBUHAN SUNGKAI (Peronema canescens jack), MALI-MALI (Leea indica), DAN LERAK (Cyathostemma viridiflorum) DARI KHDTK UNIVERSITAS LAMBUNG MANGKURAT Rahmani Rahmani; Budi Sutiya; Zainal Abidin
Jurnal Sylva Scienteae Vol 5, No 4 (2022): Jurnal Sylva Scienteae Vol 5 No 4 Edisi Agustus 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jss.v5i4.6147

Abstract

The potential of plants with medicinal properties is spread in Indonesia, one of which is in the forest area with a special purpose (KHDTK) UNLAM. This study aims to analyze several active compounds, namely the content of flavonoids, saponins, quinones, tannins, steroids, triterpenoids and alkaloids present in Sungkai plants. (Peronema canescens jack), Mali-mali (Leea indica) and Lerak (Cyathostemma viridiflorum). The results of this study were testing the active compounds that were most commonly found in sungkai plants were saponins, tannins and steroids in parts of the root, stem and leave except for steroids only in the stems and leaves. Testing of active compounds in mali-mali and lerak plants. The compounds most commonly found in the roots, stems and leaves were saponins, quinones, tannins and steroids, for flavonoid and triterpenoid compounds were not found in the three plants. The most abundant alkaloid compounds were found in the Mayer reagent in almost all parts of the sungkai, mali-mali and lerak plants except for the leaves, Wagner and Dragendorf reagents also contained compounds but only a few in the sungkai and lerak plant parts.Potensi tanaman yang berkhasiat obat tersebar di Indonesia, salah satunya di kawasan hutan dengan tujuan khusus (KHDTK) UNLAM.Penelitian ini bertujuan untuk menganalisis beberapa senyawa aktif yaitu kandungan flavonoid, saponin, quinon, tanon, steroid, triterpenoid dfan alkaloid yang ada pada tumbuhan Sungkai (Peronema canescens jack), Mali-mali (Leea indica) dan Lerak (Cyathostemma viridiflorum). Hasil dari penelitian ini pengujian ditemukan pada tumbuhan sungkai senyawa saponin, tanin dan steroid pada bagian akar, batang dan daun terkecuali steroid hanya dibagian batang dan daun. Pengujian senyawa aktif pada tanaman mali-mali dan lerak senyawa yang paling banyak ditemukan di bagian akar, batang dan daun adalah senyawa saponin, quinon, tanin dan steroid, untuk senyawa flavonoid dan triterpenoid tidak ditemukan diketiga tumbuhan. Senyawa alkaloid paling banyak ditemukan yaitu pada pereaksi mayer hampir semua bagian tumbuhan sungkai, mali-mali maupun lerak terkecuali dibagian daunnya, pereaksi wagner dan dragendorf juga terdapat senyawa namun hanya beberapa dibagian tumbuhan sungkai dan lerak
KUALITAS BIOPELET DARI LIMBAH CAMPURAN KAYU ALABAN DENGAN SERAI WANGI Armain Armain; Budi Sutiya; Lusyiani Lusyiani
Jurnal Sylva Scienteae Vol 6, No 1 (2023): Jurnal Sylva Scienteae Vol 6 No 1 Edisi Februari 2023
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jss.v6i1.8193

Abstract

Biopellets made from a mixture of alaban powder and citronella powder are for the utilization of waste, in fact, they can still be used as raw materials for biomass and renewable energy. The objectives to be achieved in this study were to identify the quality of biopellets from alaban wood powder and citronella powder, and to determine the best biopellet from various treatments. The mixture of raw materials uses 5 treatments, namely 1) 100% alaban powder; 2) 75% alaban powder and 25% citronella powder; 3) 50% alaban powder and 50% citronella powder, 4) 25% alaban powder and 75% citronella powder; and 5) 100% citronella powder. The resulting data is then analyzed with variance and compared with SNI. The quality of the biopellet was not affected by the composition of the mixture of alaban powder and citronella powder. Biopellets that meet SNI standards, in the form of water content, bound carbon and calorific value. Other parameters such as density, ash content, and volatile matter still do not meet SNI standards.Biopelet terbuat dari campuran serbuk alaban dan serbuk serai wangi adalah untuk pemanfaatan limbah sebenarnya masih dapat digunakan sebagai bahan baku biomasa dan energi terbarukan. Tujuan yang ingin dicapai pada penelitian ini adalah Mengenalisa kualitas biopelet dari serbuk kayu alaban dan serbuk serai wangi, dan mengetahui biopelet yang terbaik dari berbagai perlakuan. Campuran bahan baku menggunakan 5 perlakuan yaitu 1) serbuk alaban 100%; 2) serbuk alaban 75% dan serbuk serai wangi 25%; 3) serbuk alaban 50% dan serbuk serai wangi 50%, 4) serbuk alaban 25% dan serbuk serai wangi 75%; dan 5) serbuk serai wangi 100%. Data yang dihasilkan selanjutnya dianalisis d engan sidik ragam dan dibandingkan dengan SNI. Kualitas biopelet tidak dipengaruhi oleh komposisi campuran serbuk alaban dan serbuk serai wangi. Biopelet yang memenuhi standar SNI, berupa kadar air, karbon terikat dan nilai kalor. Parameter lainnya berupa kerapatan, kadar abu, dan zat terbang masih belum memenuhi standar SNI.
Co-Authors Anggi Ocman Tampubolon Armain Armain Dahlia Nuraini Pasaribu Dety Yuliana Rosa Dian Taufani Eko Wahyuni Fadillah Yusma Sugiyati Hafizianor Hafizianor Kissinger Kissinger Kurdiansyah Lisa Andriana Kristy Lusyiani Lusyiani Muhammad Faisal Mahdie Muhammad Muhammad Muhammad Nur Aminullah Noor Fitriadi Nur Afik Bagustiana Nur Afik Bagustiana Rahmani Rahmani Rina Muhayah Noor Pitri Sinta Amanah Sunardi, Ph.D., Sunardi Wiwin Tyas Istikowati Yuniarti Yuniarti Zainal Abidin