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All Journal Journal of Tropical Soils Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Penelitian Hutan dan Konservasi Alam Journal of Degraded and Mining Lands Management Lumbung Inovasi: Jurnal Pengabdian Kepada Masyarakat Jurnal Agriment Pengabdian Kampus: Jurnal Informasi Kegiatan Pengabdian Pada Masyarakat Prosiding Seminar Nasional Program Pengabdian Masyarakat International Journal of Multidisciplinary Approach Research and Science Jurnal Hukum & Pembangunan JSE Journal of Science and Engineering
Adi Jaya, Adi
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Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Mechanical Engineering Medicine & Pharmacology Social Sciences Transportation

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Water Retention and Saturation Degree of Peat Soil in Sebangau Catchment Area, Central Kalimantan Sajarwan, Akhmat; Jaya, Adi; Banuwa, Irwan Sukri
JOURNAL OF TROPICAL SOILS Vol. 26 No. 1: January 2021
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2021.v26i1.29-42

Abstract

Water is an essential factor in forming, utilization, management, and sustainability of peat soil. This study was to obtain characteristics of water retention and porosity of peat soil. Peat samples were taken from the Natural Laboratory of Peat Forest, Central Kalimantan at shallow, medium, and deep peat at 0-50cm (surface) and 50-100 cm (subsurface), while laboratory analyses carried out at Soil Laboratory, Universitas Gajahmada. The result shows that volumetric moisture content at the surface lower than subsurface, except for deep peat. The total pore for the surface was 84.67-86.98%, while subsurface layers were 83.53-86.93%. For surface layer, saturated degree (S) medium peat higher than shallow and deep peat, while for shallow subsurface peat higher than medium and deep peat. S value all pF levels of surface for medium and deep peat higher than the subsurface. Bulk density for surface was 0.094g.cm-3 (rb(wet)) and 0.22g.cm-3(rb (dry)) for shallow peat while medium peat are 0.084–0.087g.cm-3(rb(wet)) and 0.18–0.20g.cm-3(rb(dry)), deep peat 0.064–0.090g.cm-3(rb(wet)) and 0.11–0.16g.cm-3(rb(dry)). For subsurface, bulk density of medium peat are 0.094–0.107g.cm-3 (rb(wet)) and 0.16–0.20g.cm-3 (rb(dry)), deep peat are 0.067–0.090g.cm-3 (rb(wet)) and 0.10–0.17g.cm-3 (rb(wet)). The particle density of surface and subsurface for shallow peat higher than medium and deep peat, with values 0.67-0.77g.cm3, 0.61-0.66g.cm3, and 0.53-0.63g.cm3 for shallow, medium, and deep peat, respectively. Total pores for the surface layer decrease with increasing dry bulk density (R = 0.624) and particle density (R = 0.375). This fact seems to confirm a directly proportional relationship between parameters bulk and particle density with total pores.
Application of Biocom-Phosphate Solubilizing Fungi and Coal Fly-Ash to Increase P-Availability of Peat Soil in Kalimantan Ichriani, Gusti Irya; Ifansyah, Hairil; Maulana, Agus; Fauwziah, Ema Rizki; Syifa, Muhammad; Lautt, Bambang Supriyono; Jaya, Adi; Chusnul Chotimah, Hastin Ernawati Nur; Pasaribu, Wiranda
JOURNAL OF TROPICAL SOILS Vol. 27 No. 3: September 2022
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2022.v27i3.111-119

Abstract

The peatlands have the potential to support food security efforts. However, there is have constraints on soil fertility, especially the P nutrients availability. The biotechnology approach, the application of ameliorant (biochar-compost carrier medium (biocom)) enriched with phosphate solubilizing fungi (PSF) and coal fly ash (CFA), was expected to increase the P-availability in peat soils. The research aimed to study the application of biocom enriched with PSF and CFA to increase soil P-availability and plant P-uptake. The study was conducted using peat soil media with the formulation of CFA and biocom enriched with PSF and CFA as treatments. The treatment effect was observed through soil P available and plant P uptake of maize. The results showed PSF application was inconsistent in improving P available in peat soils in Kalimantan. In Central Kalimantan, Biocom + PSF was able to increase P available in peat soils by up to 406.18% (A. oryzae-Tb7) and 353.44% (N. fischeri-Tm8). However, in South Kalimantan P available in peat soil was only 8.04% (A. oryzae-Tb7) and 12.86% (N. fischeri-Tm8). The CFA+ (biocom+PSF) formulation increased P available in Central Kalimantan peat soils, but it was different from South Kalimantan peat soils. The application of biocom+PSF and CFA has not been able to increase the P uptake of maize plant in peatlands of South Kalimantan.
Innovation in Road Construction Materials: A Study on the Combination of Biochar and Cement in Improving Subgrade Bearing Capacity Respati, Rida; Salampak, Salampak; Sarie, Fatma; Jaya, Adi
JSE Journal of Science and Engineering Vol. 4 No. 1 (2025): Journal of Science and Engineering
Publisher : LPPI Universitas Muhammadiyah Kalimantan Timur (UMKT)

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Abstract

Road infrastructure development often faces significant challenges due to low bearing capacity of the subgrade, especially when dealing with peat soil. This condition can lead to excessive settlement, deformation, and premature damage to the road pavement, resulting in high maintenance costs. Peat soil is inherently poor in quality, making it uneconomical to use as a subgrade for road pavements. The condition of peat soil significantly impacts road construction in Central Kalimantan Province. Therefore, one effective way to address this issue is through soil stabilization. This research aims to explore the potential of biochar and cement as stabilizing agents to improve the bearing capacity of peat soil. The study involves a series of laboratory tests, including initial physical property tests of the original peat soil, as well as index and mechanical strength tests after the addition of a combination of biochar and cement. The biochar used in this research is derived from coconut shells.The conducted tests include compaction tests to determine the maximum dry density and optimum moisture content, and CBR (California Bearing Ratio) tests to evaluate the soil's bearing capacity. The variations in biochar and cement addition were: 5% biochar with 5% cement, 5% biochar with 6% cement, 5% biochar with 7% cement, and 5% biochar with 8% cement. The research results indicate that the addition of biochar to peat soil stabilization mixtures using cement significantly increases the CBR value. Specifically, adding 8% cement and 5% biochar to peat soil was able to increase the CBR value by up to 9% from the original soil's CBR of 2.2%. Therefore, it can be concluded that the combination of biochar and cement can transform peat soil into a usable subgrade for road construction
Chemical Properties of Inland Peat in Horticultural Crops and Oil Palm Plantation, Central Kalimantan Silalahi, Artha Theresia; Yulianti, Nina; Jaya, Adi; Damanik, Zafrullah; Darung, Untung
JURNAL AGRIMENT Vol. 9 No. 2 (2024): Desember 2024
Publisher : Politeknik Pertanian Negeri Samarinda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51967/jurnalagriment.v9i2.3175

Abstract

The purpose of the study was to determine the differences in soil chemical properties in horticultural crops and oil palm plantations in Central Kalimantan. The research was conducted in Kalampangan (horticulture) and Tumbang Nusa (oil palm) using quantitative analysis. Soil samples were taken at a depth of 0-30 cm with a soil drill, and data were analyzed by regression and correlation using Microsoft Excel 2022 presented in tables and graphs. The results showed that the chemical properties of peat in the mustard field were classified as low with a pH of 3,98 (very acidic), C-organic content of 53,5% (very high), ash content of 6,3% (low) and moisture content of 159.56% (high). The chemical properties of the peat in the corn field were low with a pH of 3,84 (very acidic), a C-organic content of 54,1% (very high), an ash content of 5.5% (low) and a moisture content of 216,04% (high). The chemical properties of the peat on the oil palm land were low with a pH of 3,41 (very acidic), a C-organic content of 57,5% (very high), an ash content of 0.8% (low) and a moisture content of 242,07% (high). Based on the results of the Correlation Test at the Kalampangan and Tumbang Nusa locations, it was found that there was no difference in the strength of the relationship between variables in both Kalampangan and Tumbang Nusa. Regression test results show that the relationship between C-organic and ash content is negative (opposite). The relationship between C-organic and moisture content is positive (unidirectional). The relationship between C-organic and soil pH is negative (opposite). The relationship between pH and ash content is positive (unidirectional). The relationship between pH and water content is negative (opposite). The relationship between water content and ash content is negative (opposite). The results of the T test on soil pH, C-organic and ash content showed that there was a significant difference between horticultural crops and oil palm plantations, while the results of the T test on soil water content showed that there was no significant difference between horticultural crops and oil palm plantations.
Pengabaian Hak Cipta Musik dalam Pelatihan Algoritma Artificial Intelligence: Analisis Penggandaan Karya dan Implikasi Hak Moral Pencipta Jaya, Adi; Setianingrum, Reni B
Jurnal Hukum & Pembangunan
Publisher : UI Scholars Hub

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Abstract

The development of Artificial Intelligence in the music industry raises new legal challenges within copyright law, particulary regarding the use of copyrighted musical works as training data for AI algorithms, AI training processes typically involve digital reproduction, dataset storage, and musical pattern extraction, often conducted without consent or attribution, thereby posing risks to the protection of authors moral rights. This article examines whether AI training activities ca be legally classified as reproduction under Indonesia’s Copyright Law (Law No. 28 of 2014) and analyzes their implications for the protection of moral rights. Using a normative legal research method with statutory, conceptual, and limited comparative approaches, particularly referencing the European Union’s regulation of Text and Data Mining and AI governance. This study finds that AI training processes normatively fulfill the elements of reproduction, both temporary and permanent. Furthermore, such practices result in systemic neglect of author’s moral rights duet o the loss of attribution and the opacity of algorithmic system. The article argues that Indonesia’s copyright framework including the 2025 Draft Copyright Bill, remains largely output-oriented and does not adequately regulate the use of copyright works as input for AI training. Therefore, a legal reform is necessary to explicitly recognize AI training as a form of copyright relevant use to ensure effective protection of authors moral rights in the artificial intelligence era.
Assessing the effects of water flow patterns on dam construction in degraded tropical peatlands Jaya, Adi; Baru, Franssico H.R.H.; Nahan, Alderina Rosalia; Dohong, Salampak
Journal of Degraded and Mining Lands Management Vol. 10 No. 1 (2022)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2022.101.4019

Abstract

Tropical peat swamp forest becomes degraded through forest removal and drainage, usually followed by land use change and fire. Restoration of the degraded peatland requires rewetting, which involves canal blocking and water level management. The purpose of canal blocking is to rewet the peat so that peat-forming trees can re-establish or crops be grown with minimal greenhouse gas emissions and peat subsidence. In addition, wet peat is more fire resistant than degraded dry peat. Canal construction faces several technical problems, including stress that causes bending, water seepage under the dam, and erosion of peat by water forcing its way around the sides when the water level upstream exceeds the dam height. This research examined the behaviour of water flows in canals in peatland in Central Kalimantan after blocking with dams of different designs. This study used a survey method and hydraulic physical model test with a horizontal scale of 1:30 and a vertical scale of 1:10. Field measurements were carried out on the primary canal of the former Mega Rice Project (MRP) Block C to build a physical model test prototype for laboratory research, includes measurement of cross-sections, canal length and water flow for a distance of 100 metres upstream and downstream of the construction. The test included three types of the physical model, reviewed for the effect of flow patterns caused by flood discharge frequencies of 5, 25, 50 and 100 years. The effects of flow patterns on canal dam construction in peatland were obtained from the physical model test.
Co-Authors Adji, Fengky Florante Adventa, Alma Agus Maulana Anam, Muhammad Rizqy Anjani, Divanti Sylvia Baba Barus Baru, Franssico H.R.H. Birawa, Cakra Damanik, Zafrullah Dohong, Salampak Evnaweri Evnaweri Evnaweri, Evnaweri Fadhillah, Azzara Nur Fauwziah, Ema Rizki GUSTI IRYA ICHRIANI, GUSTI IRYA Hairil Ifansyah HASTIN ERNAWATI NUR CHUSNUL CHOTIMAH, HASTIN ERNAWATI NUR Herman Daryono Inoue, Takashi Ivone Christiana Kusnendar, Muhamad Lautt, Bambang S. Lautt, Bambang Supriyono Lesmana, Dhia Adi Ludang, Yetrie Maryani Mochamad Anwar Mofit Saptono Muhammad Ardiansyah Nahan, Alderina Rosalia Nopembereni, Eti Dewi Page, Susan E. Pasaribu, Wiranda Prastiawan, Hendri Puspita, Gita Putri, Safira Nabila Rasidi, Muhammad Rida Respati Rosana Elvince Sajarwan, Akhmat Salampak Dohong Saragih, Osi Karina Sarie, Fatma Setianingrum, Reni B Shepiani, Nuril Silalahi, Artha Theresia Sona Suhartana Subianto, Pratiwi Supriati, Lilies Sutriadi, Mas Teddy Suwido Hester Limin, Suwido Hester Syifa, Muhammad Ulfah Juniarti Siregar Untung Darung Upton, Caroline Usup, Sidik R. Utama, Andean Ilham Nuralivian Widiastuti , Lusia Winerungan, Shella Yulianti, Nina