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All Journal Jurnal Pendidikan dan Pengajaran Jurnal Ilmu Dasar Berkala Ilmiah Pertanian Jurnal Kawistara : Jurnal Ilmiah Sosial dan Humaniora JURNAL FOKUS KONSELING Biogenesis: Jurnal Ilmiah Biologi Jurnal Ilmu-Ilmu Peternakan (Indonesian Journal of Animal Science) Suluh Pembangunan: Journal of Extension and Development AGRIVITA, Journal of Agricultural Science Jurnal Penelitian Humaniora Jurnal Pendidikan Ilmu Sosial The Journal of Educational Development Kelola: Jurnal Manajemen Pendidikan AGRISAINTIFIKA Jurnal Ilmu-ilmu Pertanian Scholaria: Jurnal Pendidikan dan Kebudayaan Taman Cendekia : Jurnal Pendidikan Ke-SD-an Dinamika Ilmu Jurnal Basicedu WIDYA LAKSANA Jurnal Ilmiah Sekolah Dasar FLUIDA Efektor Jurnal Revolusi Pendidikan (JUREVDIK) Agro Bali: Agricultural Journal Jurnal Abdi Insani JIIP (Jurnal Ilmiah Ilmu Pendidikan) Didache: Journal of Christian Education International Journal on Food, Agriculture and Natural Resources (IJFANRES) These proceedings represent the work of researchers participating in The International Conference on Elementary Education (ICEE) which is being hosted by the Elementary Education Study Programme School of Postgraduate Studies, Universitas Pendidikan Journal of Applied Agricultural Science and Technology DINAMIKA ILMU: Jurnal Pendidikan Jurnal Basicedu Journal of Scientific Research, Education, and Technology PAPUMA: Journal of Comunnity Services Jurnal Kawistara
Slameto Slameto
Balai Pengkajian Teknologi Pertanian Lampung, Jln. Z.A. Pagar Alam No.Ia, Rajabasa, Bandar Lampung dan saat ini sebagai Mahasiswa Program Studi PKP, Sekolah Pascasarjana, Universitas Gadjah Mada, Yogyakarta
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The Effect of Using Fast Roast and Slow Roast Roasting Techniques on the Chemical and Organoleptic Characteristics of Robusta Coffee Beans (Coffea robusta L.) Santoso, Aji; Slameto, Slameto; Savitri, Dyah Ayu; Kusbianto, Dwi Erwin; Suud, Hasbi Mubarak
International Journal on Food, Agriculture and Natural Resources Vol 5, No 1 (2024): IJ-FANRes
Publisher : Food, Agriculture and Natural Resources - NETWORKS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46676/ij-fanres.v5i1.261

Abstract

One of the commodities with the highest economic value in the plantation sector in Indonesia is coffee. In 2016 there was a significant difference between the area of robusta and arabica coffee, with the area of robusta coffee being superior. The wide difference between robusta and arabica coffee plantations is because robusta coffee is considered a potential opportunity in developing the community's economy compared to arabica coffee with a particular market. To improve the taste or quality of coffee production, one of the factors is the roasting process. Currently, the demand for coffee production is increasing with the need for maximum quality and taste of coffee beans, so the processing of coffee plants must be very concerned and improved. Therefore this study aims to determine the roasting technique with a roasting machine and its effect on improving the quality and taste of coffee beans that are popular with consumers. This study used a Split Plot Design (SPD) using the basic pattern of a completely Randomized Design consisting of 2 levels. The first factor is the roasting time as the main plot with four levels. Then the second factor is the roasting temperature with two levels. Each factor was repeated four times so there were 32 experimental units. The results of this study indicate that in the roasting process using slow roast and fast roast techniques, roasting time affects all observation parameters, namely moisture content, pH value, brix value, flavor, aroma, and caffeine. However, the roasting temperature only affects moisture content, brix value, and caffeine.
The Influence of Tube Thickness on the Shell Side of the Air preheater As a Form of Corrosion Prevention Ulyasa, Kinanti; Slameto, Slameto; Widarti, Sri
Fluida Vol. 16 No. sp1 (2023): FLUIDA x IRWNS Special Edition
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16isp1.5326

Abstract

Air preheater as a heat recovery technology is generally applied in the powerplant industry and used to heat combustion air, which increases the efficiency of the combustion chamber in the boiler. In this case, air preheater has tubular recuperative type typically located at the bottom of the circulating fluidized boiler for utilizing the lowest temperature exhaust gas. A significant presence of SO2 in the exhaust gas can lead to cold-end corrosion and cause leaks. The low tube thickness in the air preheater provides a good heat transfer performance unfortunately the corrosion issue has not been considered. By increasing the tube thickness, its aimed to extend the life time of the tubes with good corrosion resistance. This study is performed with calculations using empirical equations and validated results using Heat Transfer Research Inc (HTRI) software. Increasing the tube thickness impacts decreasing the heat transfer coefficient, increasing the flue gas (shell) pressure drop, and increasing the fouling factor. The tube thickness which determined for the corrosion prevention design of the air preheater give an overdesign of 18.14%, a heat transfer rate coefficient of 1.726 Btu/hr. ft2. °F, a shell pressure drop of 0.000541 psi, and a fouling factor of 0.114 hr. ft2. °F/Btu.
GROWTH AND PRODUCTION OF SHALLOT (Allium ascalonicum L.) WITH GUANO ORGANIC FERTILIZER AND TRICHODERMA SP APPLICATION Widuri, Laily Ilman; Amalia, Dita; Fariroh, Indri; Harsanti, Restiani Sih; Slameto, Slameto
Agrisaintifika: Jurnal Ilmu-Ilmu Pertanian Vol. 9 No. 3 (2025): Agrisaintifika
Publisher : Universitas Veteran Bangun Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32585/ags.v9i3.7475

Abstract

Shallot (Allium ascalonicum L.) is an important horticultural commodity with high economic value, but its productivity has declined, especially in several production centers, including Probolinggo Regency. Disease attacks are one of the factors causing the decline in production, prompting farmers to use chemicals to control the disease. The use of chemical fungicides frequently poses risks to the environment and food safety, thereby highlighting the need for eco-friendly alternatives such as biological agents (e.g., Trichoderma sp.) and organic fertilizers like guano. This study aimed to determine the effect of Trichoderma sp. and guano fertilizer on the growth and yield of shallots. The study used a Factorial Randomized Block Design (RBD) with the first factor being the dose of Trichoderma sp 0 (T1), 15 (T2), 25 (T3), 35 (T4) g/plant, and the second factor was guano fertilizer treatment at doses of 0 (G1), 35 (G2), 45 (G3), and 55 (G4) g/plant. The results showed that there was no interaction between Trichoderma sp. and guano fertilizer treatments on the growth and yield of shallots. However, both separately had a significant effect on several growth and yield parameters. Guano fertilizer had a significant effect on crown height, stem diameter, fresh and dry bulb weight, and root volume with an optimum dose of 45 g/plant. Meanwhile, the application of Trichoderma sp. had a significant effect on bulb diameter. The combination of biological agents and organic fertilizers demonstrated significant potential to enhance shallot productivity in a sustainable and environmentally responsible way. Keywords: Biofertilizer, Biological agents, Environmentally friendly, Organic fertilizer,
Co-Authors . Usmadi AA Sudharmawan, AA Abda Abda Adi, Logistya Royyan Afriyanto, Muhlis Agus Setiyawan Agustiani, Mala Agustina Tyas Asri Hardini Ahnaf, Yusuf Dary Aji Santoso Ali Mashar Ali Wafa Amalia, Dita Amam, Amam Andhika Imam Kartomo, Andhika Imam Anjaswari, Puji Aritonang, Firman Arum, Ayu Puspita Astiti Rahayu Argiani, Astiti Rahayu Astuti, Dwi Afnan Puji Ayuningtyas, Aih Ervanti Azmi Saleh Budha, Al Sura Tri C. Kifli, Gontom Cahyoadi Bowo D. Suretno, Nandari Damayanti, Elok Dewi, Nilasari Diptaningsari, Danarsi Dwi Aryani, Dwi Dwi Erwin Kusbianto Dwi Priyanto Dyah Ayu Savitri Eka Rizki Widayanti, Eka Rizki Elvira Hoesein Radia Eunice Widyanti Setyaningtyas Farchan Mushaf Al Ramadhani Firmansyah, Toni Hakim, Mohammad Sulton Harsanti, Restiani Sih Hidhayah, Arum Puspa Indri Fariroh Ivianti, Erni Jekti Prihatin Johan, Destiny Khairyan JT Lobby Loekmono Khozin, Mohammad Nur Kristiani, Maria Laily Ilman Widuri, Laily Ilman Lasmono, Agung Leinora Juliana Kaipatty, Leinora Juliana Lenny Widjayanthi Liliek Sulistyowati Liliek Sulistyowati Lita Latiana Maharani, Ariq Dewi Maria Tri Erowati, Maria Tri Mawardi, Rahadian Meidaliyantisyah, Meidaliyantisyah Meliala, Susan Barbara Patricia Sembiring Muhammad Hazmi Munandar, Denna Eriani Mustofa, Ardesta Angga Andien Niagra, Risnanda Deva Martha Nisak, Fauziatun Novitasari, Erliana Nur Basuki Nur Basuki Nurvita, Senja Ayu Pakpahan, Tioma Stephani Parawita Dewanti Permata, Dian Pranoto, Sugiyo Pranoto, Sugiyo Prayoga, Mohammad Candra Purwoko, Agus Rahayu Rahayu Ratih Sulistyowati, Ratih Restanto, Didik Restanto, Didik Pudji Retna Qomariah Robet Asnawi Romdhon, Mochammad Syihab Rusdiana, Riza Yuli Samsudi . Saptajiah, Intan Saptajiah Saputra , Muhamad Wahyu Saputro, Iwan Adi Sari , Vega Kartika Sari, Fanny Puspita SATRIYAS ILYAS Setiawati , Tri Candra Setiyono Setiyono Sholeh Avivi Sigit Soeparjono Simamora, Endah Cahyani Siti Patimah Sri Hartatik Sri Widarti, Sri Sugiyo Sugiyo, Sugiyo Suhandi Astuti Sumaryanto Sumaryanto, Sumaryanto Sundahri, Sundahri Suprih Danurwati, Suprih Suud, Hasbi Mubarak Syamsiar, Syamsiar Tri Agus Siswoyo TRI HANDOYO Ulyasa, Kinanti Virgo, Egidius Wahyu Jatmiko Wahyuni, Indra Wasitohadi - Widya Kristiyanti Putri Wulanjari, Distiana Wylis A, Ratna Yari Dwikurnaningsih Yaumidin, Umi Karomah Yayi Suryo Prabandari Zahara Zahara Zahrosa, Dimas Bastara