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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Jurnal Ilmu Pertanian Indonesia Jurnal Teknologi Industri Pertanian Jurnal Kesehatan Lingkungan indonesia Jurnal AGROTEKNOLOGI Jurnal Keteknikan Pertanian Jurnal Penelitian Hutan dan Konservasi Alam Jurnal Penelitian Hutan Tanaman JURNAL ANALISIS KEBIJAKAN KEHUTANAN Agrointek Pelita Perkebunan Journal of Degraded and Mining Lands Management Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) agriTECH Jurnal Aplikasi Bisnis dan Manajemen (JABM) E-Journal Jurnal Agroindustri Forum Geografi Asian Journal of Innovation and Entrepreneurship (AJIE) Jurnal Teknologi Mineral dan Batubara Industria: Jurnal Teknologi dan Manajemen Agroindustri Jurnal Teknologi & Industri Hasil Pertanian Jurnal Penelitian Sosial dan Ekonomi Kehutanan International Journal of Supply Chain Management PERENNIAL Food ScienTech Journal Teknomekanik International Journal on Food, Agriculture and Natural Resources (IJFANRES) Journal of Global Sustainable Agriculture Journal of Business Studies and Management Review JAMER Jurnal Ilmu Kehutanan Jurnal Agroteknologi Merdeka Pasuruan RESLAJ: Religion Education Social Laa Roiba Journal Jurnal Teknologi Mineral dan Batubara Jurnal Sains Materi Indonesia Jurnal Penelitian Sains dan Teknologi Indonesia Jurnal Hasil Pengabdian Kepada Masyarakat Universitas Jember Indonesian Journal of Forestry Research Journal of Global Sustainable Agriculture Biodiversitas Journal of Biological Diversity
Herry Purnomo
Department Of Forest Management, Faculty Of Forestry And Environment. Jl. Lingkar Akademik Kampus IPB Dramaga, Bogor 16680, West Java, Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Transportation Other

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Improving efficiency in green tea production time using lean manufacturing approach with value stream mapping: A case study at PT Candi Loka [Perbaikan efisiensi waktu produksi teh hijau menggunakan pendekatan produksi ramping dengan value stream mapping: Studi kasus di PT Candi Loka] Purnomo, Bambang Herry; Suryaningrat, Ida Bagus; Rachman, Ilham Aulia
Jurnal Teknologi & Industri Hasil Pertanian Vol. 29 No. 2 (2024): Jurnal Teknologi & Industri Hasil Pertanian
Publisher : Teknologi Hasil Pertanian Fakultas Pertanian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtihp.v29i2.132-143

Abstract

Green tea production activities at PT Candi Loka indicated a time-consuming, which caused process efficiency to be less than optimal. Process efficiency improvements must be made to increase company competitiveness and consumer satisfaction. This research aimed to analyze the efficiency of green tea production time at PT Candi Loka by identifying the processing time required in each production activity, including the time consumption and formulating recommendations for improvement using a lean manufacturing approach using the VSM (Value Stream Mapping) method. There were 30 activities in 6 processes consisting of receiving raw materials, withering, rolling, drying, and packaging. Identification of value streams using the PAM (Process Activity Mapping) tool produced 9 Value added (VA) activities, 19 Necessary but Non-Value Added (NNVA) activities, and 2 Non-Value Added (NVA) activities in the form of delays in the withering and drying processes. In the current state map analysis, the production lead time value was 315.286 seconds. Recommended improvements to eliminate delays in the withering process were to set up the rotary panner machine earlier and increase the number of supervisors, while to eliminate delays in the drying process were to implement a piece rate system. Increasing efficiency was also carried out by improving NNVA activities by adding weighbridge facilities and using a conveyor system. The future state map proposed by implementing recommended improvements resulted in an increase in production time efficiency to 222.356 seconds and an increase in the process cycle efficiency value from 58.95% to 84.85%.
Characterization of Glass Fiber / Epoxy with Various Silicone Resin Addition Composite’s Compressive and Flexural Strength Muhamad Hananuputra Setianto; Herry Purnomo; Mochamad Chalid
Jurnal Sains Materi Indonesia Vol. 25 No. 1 (2023): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jsmi.2023.277

Abstract

Glass fiber/epoxy composite was developed and used widely in manyapplications. Development on fiber and matrix of composite material was done to improve itsproperties. Improvement of the composite’s matrix can be done/by adding a modifier. Silicone resinis one kind of modifier that can be added to epoxy to improve its properties. Silicone resin willimprove the thermal stability of epoxy, but the effect on mechanical properties, especially whencombined with glass fiber, has not been done. In this study, a composite of glass fiber/epoxy with 0,10, 20, and 30 weight-% silicone resin addition was tested by compressive and flexural loadingmethods. Compressive strength and maximum strain tend to decrease with the increase of siliconeresin added. The highest compressive strength and strain were reached by a glass fiber and epoxycomposite without any modification at the value 240.63 MPa and 0.5%. Flexural strength willdecrease, but maximum strain will increase when more silicone resin is added to the matrix on theflexural test. The biggest flexural strength at 293.73 MPa was possessed by the composite withoutfurther modification, and a maximum strain of 5% was owned by the composite with 20% and 30%silicone resin addition.
SWOT Analysis of The Wulan Coffee Agroindustry Based on Geographic Indications Novita, Elida; Savira, Ultania Yisca; Purnomo, Bambang Herry; Pramitasari, Noven; Wahono, Puji; Pradana, Hendra Andiananta; Ismaniar Rahmadaningtyas, Resta Dwi
agriTECH Vol 44, No 3 (2024)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.59227

Abstract

Wulan Coffee Agroindustry is among the coffee-producing centers in Maesan Sub-district, Tanah Wulan Village. This Sub-district is included in the area to apply for certification by the Geographical Indication Protection Society (GIPS) for Hyang Argopuro Arabica Coffee products. Therefore, this research aimed to formulate a strategic recommendation for developing the Wulan Coffee Agroindustry in dealing with GI certification using the SWOT method. The study included identifying internal and external factors, weighting, and strategy analysis using the SWOT method. The results showed that the total score of the IFAS matrix was 1.178 while the EFAS matrix was 0.070, indicating the IE matrix’s position was in the first quadrant of the aggressive strategy. In quadrant I, an aggressive strategy could maximize the strength possessed by Wulan Coffee Agroindustry to deal with existing threats. The aggressive strategy consisted of implementing and maintaining SOP related to sustainable coffee cultivation and production methods, increasing promotional efforts, and branding of monthly coffee products based on GI. This strategy also included certification efforts for export product development, and improvement of coffee agrotourism clusters comprising several stakeholders such as village, sub-district, and the local government of Bondowoso Regency.
PENGARUH KEPEMILIKAN NPWP, PEMERIKSAAN PAJAK, PENAGIHAN PAJAK, DAN KESADARAN WAJIB PAJAK TERHADAP PENERIMAAN PAJAK PENGHASILAN Dimas Syahrul Saputra; Fatchur Rochman; Herry Purnomo
JAMER : Jurnal Akuntansi Merdeka Vol. 5 No. 2 (2024): JAMER (Jurnal Akuntansi Merdeka)
Publisher : Universitas Merdeka Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33319/jamer.v5i2.134

Abstract

This study aims to analyze the effect of NPWP Ownership, Tax Audit, Tax Collection and Taxpayer Awareness in increasing Income Tax Revenue. This study uses Quantitative Descriptive research methods. The location of this research and the respondents in this study were offices and employees with a sample of 70 respondents who had NPWP in Sidorejo District, Magetan Regency. The results of hypothesis research show that the independent variable of NPWP ownership is 0.001, the independent variable of tax audit is 0.049, the independent variable of tax collection is 0.040 and the independent variable of taxpayer awareness is 0.041. With these results it can be stated that NPWP ownership, tax audit, tax collection, and taxpayer awareness have a significant effect. Simultaneously, the variables of NPWP ownership, tax audit, tax collection and taxpayer awareness affect the income tax revenue variable.
Variation in Mangrove Growth Across Gradients of Species and Seeds in the Mangrove Restoration Area of Marga Sungsang, South Sumatra: Variasi Pertumbuhan Mangrove Lintas Gradien Jenis dan Benih di Kawasan Mangrove Restorasi Marga Sungsang, Sumatera Selatan Apriyanto; Rujito Agus Suwignyo; Tengku Zia Ulqodry; Sarno; Riris Aryawati; Muhtadi; Herry Purnomo; Beni Okarda
Journal of Global Sustainable Agriculture Vol 5, No 2 (July 2025)
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jgsa.v5i2.859

Abstract

Marga Sungsang has mangrove forests that have been degraded into plantations and require restoration activities. One restoration method that can be used is experimental multispecies planting. This study aims to determine the variation in mangrove growth across species and seed gradients. The data measured include environmental parameters, height growth per 3 months, and the number of branches and leaves. The results show that the water temperature ranges from 25.2 - 26.6 ° C and the soil pH ranges from 7.0 - 7.3 within the range that supports mangrove growth. The water pH value ranges from 12.1 - 14.3 and DO ranges from 3.5 - 4.1 mg / L both are outside the optimum range but mangroves can grow and adapt well to less than ideal conditions. Salinity ranges from 4.8 - 8.8 ppt is classified as low but still within the tolerance threshold. The total N content of 0.2% and total P of 13.3 - 41.8 ppm is in the low-moderate category and still meets initial nutritional needs. Rhizophora apiculata (RA) seedling has a high and significant growth rate, while Rhizophora apiculata (RA) and Bruguiera gymnorrhiza (BG) propagules show faster height growth in the early phase compared to seedling seeds. Rhizophora apiculata (RA) seedling and propagules produce almost the same number of leaves and branches at the end. These findings indicate that Rhizophora apiculata (RA) seedling and propagules are very suitable for planting in the mangrove restoration area of ​​Marga Sungsang Village.
Variation in Mangrove Growth Across Gradients of Species and Seeds in the Mangrove Restoration Area of Marga Sungsang, South Sumatra: Variasi Pertumbuhan Mangrove Lintas Gradien Jenis dan Benih di Kawasan Mangrove Restorasi Marga Sungsang, Sumatera Selatan Apriyanto; Rujito Agus Suwignyo; Tengku Zia Ulqodry; Sarno; Riris Aryawati; Muhtadi; Herry Purnomo; Beni Okarda
Journal of Global Sustainable Agriculture Vol 5, No 2 (July 2025)
Publisher : Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jgsa.v5i2.859

Abstract

Marga Sungsang has mangrove forests that have been degraded into plantations and require restoration activities. One restoration method that can be used is experimental multispecies planting. This study aims to determine the variation in mangrove growth across species and seed gradients. The data measured include environmental parameters, height growth per 3 months, and the number of branches and leaves. The results show that the water temperature ranges from 25.2 - 26.6 ° C and the soil pH ranges from 7.0 - 7.3 within the range that supports mangrove growth. The water pH value ranges from 12.1 - 14.3 and DO ranges from 3.5 - 4.1 mg / L both are outside the optimum range but mangroves can grow and adapt well to less than ideal conditions. Salinity ranges from 4.8 - 8.8 ppt is classified as low but still within the tolerance threshold. The total N content of 0.2% and total P of 13.3 - 41.8 ppm is in the low-moderate category and still meets initial nutritional needs. Rhizophora apiculata (RA) seedling has a high and significant growth rate, while Rhizophora apiculata (RA) and Bruguiera gymnorrhiza (BG) propagules show faster height growth in the early phase compared to seedling seeds. Rhizophora apiculata (RA) seedling and propagules produce almost the same number of leaves and branches at the end. These findings indicate that Rhizophora apiculata (RA) seedling and propagules are very suitable for planting in the mangrove restoration area of ​​Marga Sungsang Village.
Design, simulation, and static testing of an eco-friendly prosthetic foot using ramie-PLA composite Iyan Sopiyan; Tresna P. Soemardi; Herry Purnomo; Olivier Polit
Teknomekanik Vol. 8 No. 1 (2025): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/teknomekanik.v8i1.36572

Abstract

This study developed a sustainable lower-limb prosthetic prototype using biodegradable ramie fiber-reinforced PLA composite as its primary material. The design specifically addresses the needs of individuals with limb amputation while prioritizing environmental sustainability. PLA-based composites for structural biomedical applications—particularly those in lower-limb prosthetics—must meet rigorous mechanical and fatigue performance requirements under repetitive loading. This study investigates the development of a transtibial prosthetic foot prototype using a quasi-isotropic lay-up prepreg ramie-PLA composite fabricated via the hot press method. Material characterization was conducted per ASTM standards, and the design was evaluated using the Finite Element Method (FEM). The prototype underwent static testing according to ISO 22675 with a user load criterion. The laminate exhibited an ultimate tensile strength of 48.36 ± 0.95 MPa, an elastic modulus of 4.125 ± 0.25 GPa, and a flexural strength of 62.06 ± 3.43 MPa. FEM results showed that all normal and shear stresses during heel strike (17.78 MPa and 1.71 MPa) and toe-off (12.38 MPa and 5.69 MPa) phases remained below fatigue limits. Experimental static stresses were heel strike (12.72 MPa) and toe-off (20.09 MPa), both within safe operational limits. These findings highlight the structural viability and environmental sustainability of ramie-PLA composites, positioning them as a promising material for next-generation prosthetic foot development.
PRODUCTIVITY AND ECONOMIC IMPACT OF BAMBOO IN MONOCULTURE VERSUS MIXED SYSTEMS: IMPLICATIONS FOR SOCIAL FORESTRY Ghoitsa Rohmah Nurazizah; Siti Badriyah Rushayati; Hardjanto; Herry Purnomo; Nyoto Santoso
Indonesian Journal of Forestry Research Vol. 13 No. 1 (2026): Indonesian Journal of Forestry Research
Publisher : Association of Indonesian Forestry and Environment Researchers and Technicians

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59465/ijfr.2026.13.1.53-76

Abstract

Bamboo forests serve as valuable assets which assist in developing social forestry programs that benefit local communities. The research investigates how bamboo grows and its economic value through two different planting methods which include monoculture and mixed systems at a Indonesian village forest. Researchers used systematic sampling methods to collect data from 21 plots which included 14 monoculture plots 6 mixed-system plots and 1 shrub plot. The research team focused on gathering data about clump characteristics and culm density and regeneration proportion. The researchers used the Mann–Whitney U test to analyze system differences because the data did not follow normal distribution. The study results show that monoculture bamboo systems produce higher output levels and generate greater financial benefits than mixed systems. The monoculture stands achieved an annual output of 6,374 culms per hectare which results in an estimated economic value of IDR 50,992,000 per hectare every year. The mixed systems produced 5,242 culms per hectare each year whereas the system generated an output of 5,242 culms. The study found that monoculture systems produced more young bamboo regeneration which reached 30.8% compared to mixed systems which generated 27.0% of young bamboo regeneration showing that monoculture systems have better regenerative capabilities.
Measuring the sustainability of wood consumption at the household level in Indonesia: Case study in Bogor, Indonesia Lutfy Abdulah; Endang Suhendang; Herry Purnomo; Juang Rata Matangaran
Biodiversitas Journal of Biological Diversity Vol. 21 No. 2 (2020)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d210205

Abstract

Abstract. Abdulah L, Suhendang E, Purnomo H, Mattangaran JR. 2020. Measuring the sustainability of wood consumption at the household level in Indonesia: Case study in Bogor, Indonesia. Biodiversitas 21: 457-464. Data on consumption of wood products at the end-user level does not yet exist. This is caused by variations in the shape of wood products and raw materials used. Meanwhile, information on the level of consumption per capita is needed to measure sustainability consumption at the household level, determine the volume of wood production and carbon storage in wood products in the household. The novelty of this study is in method for measure wood product consumption. The aim of this study was to estimate the level of wood consumption at the household level in the form of use for construction and furniture. The method used was a survey of wood products at the industrial level and to make a database and then confirmed to households to determine the level of consumption. The results showed that wood products in the household are divided into 2 main parts namely construction and furniture. The level of wood consumption varied greatly depending on the type of roof, the number of doors and windows and the amount of furniture used. The level of consumption in Bogor reached 0.1 m3 per capita. This consumption was influenced by the time of use and the size of family.
Developing sustainable models of agroforest-landscape in Bogor, Indonesia NUGRAHA AKBAR NURROCHMAT; HERRY PURNOMO; MUHDIN MUHDIN; JAMES THOMAS ERBAUGH
Biodiversitas Journal of Biological Diversity Vol. 24 No. 8 (2023)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d240814

Abstract

Abstract. Nurrochmat NA, Purnomo H, Muhdin, Erbaugh JT. 2023. Developing sustainable models of agroforest-landscape in Bogor, Indonesia. Biodiversitas 24: 4324-4333. Deforestation continues in Indonesia even though many regulations and precautions have been taken. It most likely happened due to the less economic contribution from the forestry sector, which caused the conversion from forest lands to more profitable land uses. The forest area covers 125 million hectares (66%) of 190 million hectares of country land but contributes only about 0.60% of the Gross Domestic Product (GDP). An agroforestry scheme is promoted to increase the economic value of the forest to increase both the community welfare and the environmental quality. This study indicates that the best agroforestry commodities for social scenarios are durian, ornamental plants, and laying hens, with the highest potential profit of IDR.143,857,559 (USD.9,652)/hectare/month and 9.19 tons/hectare carbon stock. While for the economic scenario is jackfruit, ornamental plants, and laying hens with a potential profit of IDR.146,908,379 (USD.9,789)/hectare/month and 18.66 tons/hectare carbon stock. In comparison, the ecology scenario promotes nutmeg and ornamental plants with a potential profit of IDR 36,814,280 (USD.2,470)/hectare/month, with the highest of 56.12 tons/hectare carbon stock. This study recommends the appropriate land use models for the government to address the conflict of interest between agriculture and forestry in contributing to Indonesia's FoLU (Forestry and other Land Uses) Net Sink in 2030.
Co-Authors Afriliana, Asma Agnes Agustin, Agnes Ahmad Haris Hasanuddin Slamet Al-hakim, Ridha Ghaniy Alfian Futuhul Hadi Amaliya, Risky Apriyanto Ardian Alfiadin Ardiansyah, Tedy Asef Kurniyawan Hardjana Asmunir Asnath Maria Fuah, Asnath Maria At-Ta’anny, Ummu Bagus Suryaningrat, Ida BAMBANG DWI WIJANARKO Beni Okarda Bertung Suryadharma, Bertung Bintang C. H. Simangunsong Bondan Winarno Bramasto Nugroho Budi Kuncahyo Bustanul Arifin BUSTANUL ARIFIN Chalid, Mochamad Darwo Darwo Deddy Wirawan Soedibyo, Deddy Wirawan Dedy Wirawan Soedibyo Dimas Syahrul Saputra Djoko Wahjono Dodik R. Nurrochmat Dwi Putra Aprianto Edwin Martin Edy Suhartono Elida Novita Endang Muryani ENDANG SUHENDANG Endang Suhendang Endang Suhendang Endang Suhendang Endes N. Dahlan Fahmi, Achmadi Anwarul Anwarul Fatchur Rochman Hadi S Alikodra Hardjanto Hardjanto Hardjanto Hartono, Tjahjo Herlina Herlina Herlina Herlina Humayro, Aisyah I Nengah Surati Jaya Ida Bagus Suryaningrat Ilham, Qori Pebrial Irdika Mansur Ismaniar Rahmadaningtyas, Resta Dwi Istomo . Iyan Sopiyan JAMES THOMAS ERBAUGH JOHANNES W WAHONO Juang Rata Matangaran Kartodihardjo, Hariadi Kristio, Ari Lestari, Ning Puji Lila Juniyanti LILIK BUDIPRASETYO Lutfy Abdulah Lutfy Abdullah M Melati Mahardika, Nidya Shara Marimin , Messalina L Salampessy Mochammad Imron Awalludin Muhamad Hananuputra Setianto Muhammad Alkaff Muhdin MUHDIN MUHDIN Muhtadi Nandy Kosmaryandi Ningtias, Rahayu Nita Kuswardhani Noer Novijanto Noven Pramitasari NUGRAHA AKBAR NURROCHMAT Nunung Parlinah Nunung Parlinah Nurheni Wijayanto Nurmalasari, Marsa Suci Nyoto Santoso Olivier Polit Pradana, Hendra Andiananta Pratiwi Pratiwi Rachman, Ilham Aulia Rahman Kurniadi Rahman Kurniadi Ramadhan, Rizqi Dhia Rika Harini Irawati Ririn Wulandari Riris Aryawati Rizka Permatayakti Rasyidta Nur Rujito Agus Suwignyo Rusdianto, Andrew Setiawan Sa’diyah, Halimatus Salsabila Sambas Basuni Sarno Satriya Bayu Aji Satriya Bayu Aji, Satriya Bayu Savira, Ultania Yisca Siti Badriyah Rushayati Soni Sisbudi Harsono, Soni Sisbudi Sudarko Sudarko Sudirman, Nurfila Sari Sukardi Sukardi Supartiningrum, Lituhayu Suryaningrat, Ida Bagus Bagus Susilo, Dwi Ermayanti Tengku Zia Ulqodry Tien Lastini Tresna P. Soemardi Tri Hastuti Swandayani Tri Nugroho Tri Nugroho Ujang Sumarwan Viko Nurluthfiyadi Ni’maturrakhmat Wahono, Puji Widyananto Basuki Aryono Wijayanto, Nurheni Yandra Arkeman Yuli Wibowo Yusli Wardiatno ZETH PARINDING Zeth Parinding