Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

1.642

P-Index

This Author published in this journals

All Journal Jurnal Ilmu dan Teknologi Hasil Hutan International Journal of Renewable Energy Development Peronema Forestry Science Journal Journal of Engineering and Technological Sciences Sarwahita : Jurnal Pengabdian Kepada Masyarakat PERENNIAL Journal of Sylva Indonesiana Prosiding Konferensi Nasional PKM-CSR Jurnal Sylva Lestari Makara Journal of Technology Repong Damar: Jurnal Pengabdian Kehutanan dan Lingkungan International Journal of Renewable Energy Development Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS)

Apri Heri Iswanto

Department Of Forest Product, Faculty Of Forestry, Universitas Sumatera Utara, Kampus USU, Padang Bulan, Medan, Sumatera Utara, Indonesia

Author-ID : 290221

Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health Social Sciences Other

Published : 27 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3

Iptek Penguatan Ketahanan Pangan dengan Program Food Estate Sistim Agrosilvopastural di Humbang Hasundutan OK Hasnanda Syahputra; Rudi Hartono; Harisyah Manurung; Luthfi Hakim; Tito Sucipto; Apri Heri Iswanto; Jajang Sutiawan; Samsuri Samsuri; Anita Zaitunah; Agus Purwoko; Hafizah Arinah; Moehar Maraghiy Harahap; Mariah Ulfa; Ridahati Rambey; Suri Fadhilla; Arida Susilowati; Deni Elfiati; Ahmad Baiquni Rangkuti
Repong Damar: Jurnal Pengabdian Kehutanan dan Lingkungan Vol 1, No 2 (2022): November
Publisher : Magister of Forestry,Department of Forestry, Faculty of Agriculture, University of Lampung

Desa Ria-Ria Kecamatan Pollung Kabupaten Humbahas, dipilih dan dipersiapkan sebagai lokasi dosen wajib mengabdi dari Universitas Sumatera Utara dalam program food estate dengan menerapkan sistem agroforestry melalui pola agrosilvopastural (ternak, kehutanan, dan pertanian). Humbang Hasundutan berpotensi karena terletak didataran tinggi yang memiliki curah hujan yang sangat tinggi dan agroklimat yang sesuai untuk budidaya holtikultura, oleh sebab itu agrosilvopastur cocok diterapkan. Sistem agrosilvopastur diharapkan dapat meningkatkan produktivitas lahan secara keseluruhan dan berkelanjutan yang dapat menjamin dan memenuhi kebutuhan hidup masyarakat petani. PKM ini dilaksanakan tanggal 20 November 2021 yang bertempat di kantor kepala desa Riaria Kecamatan Pollung, yang dihadiri anggota kelompok tani agrosilvopastur maju karya sebanyak 24 orang angggota kelompok. Hasil bersama mitra nantinya selain dapat memasarkan produksi rumput sebagai hijauan pakan ternak juga akan mampu memasarkan daging seiring dengan meningkatnya kebutuhan pasar daging dalam negeri. Dari kegiatan dosen wajib mengabdi, dapat memberdayakan petani dalam bidang agrosivopastural, peningkatan pendapatan, dan sekaligus kesejahteraannya

Optimizing the Synthesis of Lignin Derivatives from Acacia mangium to Improve the Enzymatic Hydrolysis of Kraft Pulp Sorghum Bagasse Widya Fatriasari; Fajar Nur Hamzah; Bagas Ikhasan Pratomo; Triyani Fajriutami; Riksfardini Annisa Ermawar; Faizatul Falah; Raden Permana Budi Laksana; Muhammad Ghozali; Apri Heri Iswanto; Euis Hermiati; Ina Winarni
International Journal of Renewable Energy Development Vol 9, No 2 (2020): July 2020
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.9.2.227-235

The present study is aimed at optimizing the synthesis of Amphipilic lignin derivatives (A-LD) from the isolated lignin of A.mangium black liquor (BL), using the one and two step acid isolation method, and commercial lignin (LS) was used as comparison. The experimental design was conducted using Taguchi method, which consisted of four parameters and two level factors, with reference to the matrix orthogonal array, L8, including temperature, reaction time, amount of polyethylene glycol diglycidylethers (PEGDE) and Kraft lignin (KL). Furthermore, the kraft pulp of sweet sorghum bagasse (SSB) was used as substrate in the enzymatic hydrolysis (NREL method), with addition of A-LD, whose functional group and surface tension were then characterised using ATR-FTIR and surface tension equipment. Conversely, an improvement in the reducing sugar yield (RSY) compared to the control was observed after adding various A-LDs to the substrate during enzymatic hydrolysis. This product was more prospective for L2S than others products under milder circumstances, due to the fact that it possesses the lowest surface tension. Also, Taguchi analysis demonstrated the treatment at 60 °C for 1 h with 3.0 g and 1.0 g of PEDGE and lignin, respectively as the optimum condition, while the amount of lignin present was included as a factor with the propensity to significantly affect A-LD L1S and LS. Therefore, it was established that the A-LDs from A. mangium kraft lignin require milder synthesis conditions, compared to other existing methods and despite the differences in optimum experimental condition for L2S and LS, the functional groups in the IR spectra possessed very identical characteristics.

Upaya Membangun Harmoni Penghidupan Manusia dan Konservasi Harimau Sumatera Melalui Program Desa Binaan USU di Timbang Lawan, Kabupaten Langkat Pindi Patana; Yulia Siti Maisaroh; Apri Heri Iswanto; Adrian Hilman; Agus Purwoko; Mariah Ulfa; Alfan Gunawan Ahmad; Ma'rifatin Zahrah; Oding Affandi; Nurdin Sulistiyono; Eddy Mirwandhono; Achmad Siddik Toha; Moehar Maraghiy Harahap; Tati Vidiana Sari; Ahmad Sadeli; Ahmad Baiquni Rangkuti; Erni Jumilawaty; Yunus Afifuddin
Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS) Perguruan Tinggi Mengabdi: Berkarya dan Berinovasi Untuk Membangun Masyarakat Semakin Tangguh di Mas
Publisher : Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS)

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

Timbang Lawan merupakan salah satu desa di Kecamatan Bohorok, Kabupaten Langkat dan menjadi zona penyangga (buffer zone) Taman Nasional Gunung Leuser. Salah satu masalah desa adalah kemunculan harimau sumatera (Panthera tigris sumatrae) yang menyerang ternak warga di pinggiran hutan. Selain mengakibatkan kerugian materi, serangan harimau sumatera berpotensi menimbulkan persepsi negative terhadap satwaliar tersebut. Oleh karena itu kegiatan pengabdian USU ini dilakukan dengan tujuan untuk membangun harmoni antara penghidupan masyarakat dengan konservasi harimau. Kegiatan terdiri dari lima bagian, yaitu: membangun kandang anti harimau, pemeliharaan rusa untuk restocking pakan harimau, restorasi, pembuatan pakan ternak dan pengembangan ekowisata. Metode yang digunakan adalah transfer pengetahuan dan pelibatan masyarakat melalui praktek langsung lapangan. Masyarakat sangat antusias dan pemerintah desa sangat mendukung kegiatan ini, karena dapat memberi solusi langsung terhadap permasalahan masyarakat desa.Kata kunci: Timbang Lawan, Harimau sumatera, penghidupan, konservasi, konflik

Effect of Particle Length to the Quality Particleboard Made from Sorghum Bagasse Iswanto, Apri Heri; Prabuningrum, Dita Sari; Azhar, Irawati; Supriyanto, Supriyanto
Journal of Sylva Indonesiana Vol. 1 No. 01 (2018): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

The objective of this research was to evaluate the effect of length size particle on physical and mechanical properties of particleboard. Sorghum bagasse was cut into 3, 5, and 7 cm length size. Furthermore, particles were dried until reached of4% moisture content. Amount of 10% urea-formaldehyde (UF) resin used for binding. Hot pressing process conducted in 130ï‚°C temperature for 10 minutes and 30 kg cm -2 pressure. The results showed that thickness swelling (TS) and internal bond (IB) did not fulfill of requirement of Japanese Industrial Standard (JIS) A 5908 (2003). According to all parameters, 3 cm length size of particle was resulting in the best properties.

Editorial 2021: Letter from the Board of the Journal of Sylva Indonesiana (JSI) Nuryawan, Arif; Heri Iswanto, Apri
Journal of Sylva Indonesiana Vol. 4 No. 01 (2021): Journal of Sylva Indonesiana
Publisher : Talenta Publisher

This letter is a second editorial in the fourth year of Journal of Sylva Indonesiana (JSI)â€™s establishment. This editorial contains messages from the boards, comprised of a former and a chief editor of this journal, about development of this journal, statistics of the published articles, acknowledgment, and closing remarks. JSI has been accredited by Ministry of Research and Technology, Republic of Indonesia with third rank (Sinta 3) since first volume of the publication. During the development of this journal, 25 scientific articles and 1 editorial have been published with peer-reviewed. Classification according to aim and scope of this journal resulted in study field of sylviculture as the major (20%) of forestry and natural resources theme, while the other fields maintained their relative portion. Acknowledgments have been conveyed to contributors of this journal (authors, reviewers, editors, publishers, and readers). Closing remarks were consisted of condolence news, a glimmer of hope to return a normal post pandemic situation, and of course a wish all contributors a very happy, healthy and successful year of 2021.

Hydrolytic Stability of Sengon-Oriented Strand Board Bonded with Hybrid Phenol-Formaldehyde/Polymeric Methylene Diphenyl Diisocyanate Adhesives Sari, Rita Kartika; Fitrianum, Fadilah; Maulana, Muhammad Iqbal; Hidayat, Wahyu; Winarni, Ina; Iswanto, Apri Heri; Lubis, Muhammad Adly Rahandi
Jurnal Sylva Lestari Vol. 12 No. 3 (2024): September
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v12i3.987

The hydrolytic stability of oriented strand board (OSB) is critical to guarantee good performance in humid conditions over the long term. The adhesive system impacts hydrolytic stability in addition to the wood strands. This study aims to investigate the hydrolytic stability of OSB bonded with a hybrid adhesive based on phenol-formaldehyde (PF) and polymeric methylene diphenyl diisocyanate (pMDI) modified with NaOH and CaCO3 catalyst. PF was mixed with each catalyst at approximately 1% of the PF solids content. The pMDI was added to the mixture at 2.5% and 5% of the PF solid content. The hybrid PF/pMDI adhesives were then used for OSB production. The hydrolytic stability of OSB samples was tested at 25°C and 100°C and compared with OSB using unmodified PF as a control. After hydrolysis, OSBs with hybrid PF/pMDI adhesives had lower weight loss than control adhesives at both temperatures. The pH indicates no significant polymer dissolution from the board into the hydrolysis solution. Hybrid PF/pMDI adhesives with a CaCO3 catalyst obtain significantly lower thickness swelling values. The findings of this study have significant implications for developing high-performance, environmentally-friendly OSB products. Keywords: eco-friendly composite, hydrolytic stability, oriented strand board, Paraserianthes falcataria, phenol-formaldehyde

Ramie Fibers from Agroforestry System as Sustainable Materials for Functional Textiles: A Review Aristri, Manggar Arum; Hidayat, Wahyu; Iswanto, Apri Heri; Lubis, Muhammad Adly Rahandi
Jurnal Sylva Lestari Vol. 12 No. 3 (2024): September
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v12i3.986

Agroforestry system is a form of integrated land use involving forestry and agriculture, which is expected to help overcome the problems of increasing demand for agricultural land, decreasing environmental quality and poverty rates, and resulting in increasingly complex global issues. This system includes a combination of forestry crops with agricultural crops or other plants that can grow together on the same land. The application of agroforestry can improve agricultural welfare, overcome the environmental crisis and poverty, and maintain the sustainability of natural resource conservation. Ramie (Boehmeria nivea) fiber is an interesting plant to cultivate using an agroforestry system. It is easy to cultivate, positively impacts the environment, and has many application benefits because it is known as a strong and long-lasting fiber. On the other hand, the textile industry in Indonesia still predominantly uses cotton fiber which has low productivity, so the value of cotton imports increases yearly. Given the increasing demand for environmentally friendly and sustainable textiles, researchers and industry stakeholders are looking for other materials that provide functionality and environmental advantages. Ramie fiber is a type of natural fiber with advantages compared to other natural fibers, such as tensile strength, mechanics, and cellulose content, which has similar characteristics to cotton so that ramie can be applied as a functional textile material to replace cotton. This review paper aims to provide an in-depth overview of all ramie fiber properties, methods, and applications for functional textiles. This article highlights the environmental benefits of ramie fiber and its potential to encourage a more sustainable textile industry, citing various sources. Keywords: agroforestry, forestry crops, functional textile, ramie fiber, ramie’s properties

Co-Authors Achmad Siddik Toha Adrian Hilman Agus Purwoko Ahmad Baiquni Rangkut Ahmad Baiquni Rangkuti Ahmad Baiquni Rangkuti Ahmad Sadeli Alfan Gunawan Ahmad Andi Hermawan Andrianta Ginting Anita Zaitunah Anita Zaitunah Arida Susilowati Iswanto Arif Nuryawan Arif NURYAWAN Bagas Ikhasan Pratomo Bejo Slamet Bora Jeong Cut Yulia Maghfirah Dede Hermawan Deni Elfiati Deni Elfiati Deni Elfiati Eddy Mirwandhono Erman Munir Erni Jumilawaty Euis HERMIATI Euis Hermiati Faizatul Falah Faizatul FALAH Fajar Nur Hamzah Fajriutami, Triyani Fauzi Febrianto Fitrianum, Fadilah Guido Simbolon Hafizah Arinah Hafizah Arinah hamzah, fajar nur Hardiansyah Tambunan Harisyah Manurung Imam Wahyudi Indrawan, Imam Wahyudi Ina Winarni Ina Winarni, Ina Irawati AZHAR Irawati AZHAR Irawati Azhar Iwan RISNASARI Iwan Risnasari Jajang Sutiawan Jajang Sutiawan Janrahman Simarmata Johanna Christina Malau Kaya Muda Lubis Kurniawansyah Effendy Laksana, Raden Permana Budi Lee Seng Hua Lubis, Muhammad Adly Rahandi Lubos Kristak Luthfi Hakim Luthfi Hakim Ma'rifatin Zahrah Manggar Arum Aristri Mariah Ulfa Mariah Ulfa Maulana, Muhammad Iqbal Moehar Maraghiy Harahap Mohammad Basyuni Muhammad Ghozali Muhammad Ghozali Nurdin Sulistiyono Oding Affandi OK Hasnanda Syahputra OK Hasnanda Syahputra Petar Antov Pindi Patana Prabuningrum, Dita Sari Pratomo, Bagas Ikhasan Purwoko, Agus Raden Permana Budi Laksana Ridwanti Batubara Riksfardini Annisa Ermawar Riksfardini Annisa ERMAWAR Rita Kartika Sari Rudi Hartono Rudi Hartono Rudi Hartono Rudi Hartono Rudi Hartono Rudy Hartono Sipahutar Ryzki Pebriansyah Samsuri Samsuri Samsuri, Samsuri Sucipto, Tito Supriyanto Supriyanto Supriyanto Supriyanto Surdiding RUHENDI Suri Fadhilla Syahroni Hasan Siregar Tati Vidiana Sari Tito Sucipto Triyani Fajriutami Wahyu Hidayat Widya Fatriasari Widya Fatriasari Widya FATRIASARI Winda Martogi Situmeang Yulia Siti Maisaroh Yunus Afifuddin Yusuf Sudo Hadi Zahrial COTO

Title

Found 27 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 27 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 27 Documents
Search