Judul: Estimation of Carbon Dioxide Emissions Due to Forest and Land Fires in Muaro Jambi Regency, Jambi Province
Abstrak: Kebakaran hutan memiliki dampak serius terhadap perubahan iklim karena menghasilkan emisi gas karbon dioksida. Kabupaten Muaro Jambi adalah kabupaten dengan kebakaran hutan dan lahan terparah di Provinsi Jambi. Penelitian bertujuan menduga emisi gas karbon dioksida yang dihasilkan di Kabupaten Muaro Jambi. Metode yang dilakukan adalah dengan menduga luasan area terbakar menggunakan citra Sentinel-2, kemudian dilakukan perhitungan emisi karbon dioksida menggunakan persamaan Seiler dan Crutzen. Hasil penelitian menunjukkan bahwa jumlah hotspot yang terdeteksi di Kabupaten Muaro Jambi secara berurutan pada tahun 2019, 2020, 2021 dan 2022 sebesar 3367, 18, 6, dan 2 titik. Sementara itu, emisi gas karbondioksida yang dihasilkan pada tahun 2019, 2020, 2021 dan 2022 di tanah mineral sebesar 615,913,55 ton, 4.353,76 ton, 415,90 ton, dan 2.895,54 ton. Sedangkan di lahan gambut emisi yang dikeluarkan sebesar 8.922,62 ton, 4.761,38 ton, 36,14 ton, dan 121,35 ton., Forest fires have a serious impact on climate change because they produce carbon dioxide gas emissions. Muaro Jambi District is the district with the worst forest and land fires in Jambi Province. The study aims to estimate the carbon dioxide gas emissions generated in Muaro Jambi Regency. The method used was to estimate the burned area using Sentinel-2 imagery, then calculate carbon dioxide emissions using the Seiler and Crutzen equation. The results showed that the number of hotspots detected in Muaro Jambi Regency in 2019, 2020, 2021 and 2022 amounted to 3367, 18, 6, and 2 points, respectively. Meanwhile, carbon dioxide gas emissions generated in 2019, 2020, 2021 and 2022 on mineral soil amounted to 615,913.55 tons, 4,353.76 tons, 415.90 tons, and 2,895.54 tons. While in peatlands the emissions released were 8,922.62 tons, 4,761.38 tons, 36.14 tons, and 121.35 tons.
Keyword: Emisi gas karbon dioksida, Hotspot, Kabupaten Muaro Jambi, Tutupan lahan

Judul: Analysis of Forest and Peatland Fire  Vulnerability in Muaro Jambi Regency, Jambi Province
Abstrak: Provinsi Jambi dikenal sebagai wilayah yang rentan terhadap kebakaran karena hampir setiap tahun wilayahnya mengalami insiden kebakaran pada lahan gambut yang memiliki luas cukup signifikan. Tujuan dari penelitian ini adalah untuk menganalisis distribusi dan jumlah hotspot, menganalisis korelasi antara curah hujan dengan hotspot sebagai indikator terjadinya kebakaran hutan dan lahan gambut, serta menganalisis kegiatan masyarakat terkait pembakaran hutan dan lahan gambut. Pemetaan sebaran hotspot dilakukan dengan analisis spasial data hotspot, sebaran lahan gambut, dan data administrasi Kabupaten Muaro Jambi. Data sebaran hotspot, dan curah hujan harian yang telah direkapitulasi kemudian dilakukan uji korelasi bivariate pearson menggunakan aplikasi SPSS. Wawancara secara in depth interview dengan jenis teknik sampling kuota yang telah disediakan untuk menentukan kegiatan masyarakat yang dapat memicu kebakaran. Distribusi hotspot di Kabupaten Muaro Jambi selama periode 2019- 2023 mencapai total 5974 titik. Hasil penelitiam menunjukkan bahwa hubungan antara curah hujan dan hotspot di Muaro Jambi tidak signifikan dan berkorelasi negatif yang berkategori sedang dengan nilai P value sebesar 0,493 > 0,05., Jambi Province is known as an area vulnerable to fires because almost every year it experiences fire incidents on peatlands, which have a significant extent. The purpose of this study was to i) analyze the distribution and number of hotspots, ii) analyze the correlation between rainfall and hotspots as indicators of forest and peatland fires, and iii) analyze community activities related to forest and peatland burning. Mapping of hotspot distribution was conducted using spatial analysis of hotspot data, peatland distribution, and administrative data of Muaro Jambi Regency. The distribution of hotspots and daily rainfall data that had been recapitulated were then subjected to bivariate Pearson correlation tests using SPSS software. In-depth interviews with a quota sampling technique were conducted to determine community activities that could trigger fires. The distribution of hotspots in Muaro Jambi Regency during the period 2019-2023 reached a total of 5,974 points.. The analysis shows that the relationship between rainfall and hotspots in Muaro Jambi is not significant and moderately negatively correlated, with a P-value of 0.493 > 0.05
Keyword: Rainfall, hotspot, kebakaran lahan gambut, pembukaan lahan, Land clearing

Judul: Optimization of Alginate-Chitosan Microcapsules Formation for Leydig Cells Encapsulation
Abstrak: Hypogonadism is a clinical condition characterized by low concentrations of testosterone. It is caused by malfunction of Leydig cells in producing testosterone. Encapsulation method will protect the transplanted cells from the immune system rejection. The aims of this study was to optimize the formation of microcapsules for Leydig cells encapsulation. The microcapsules were made of alginate and chitosan as the first and the second coating agents, respectively. The result showed that the minimum concentration of alginate was 1.5% (w/v) with a viscosity of 33.8 cPs, resulted spherical microcapsules with diameters of 230-270 µm. The optimum concentration of chitosan as the second coating agent was 0.5% (w/v), resulted spherical microcapsule with mechanical stability in 4 hours. Leydig cells can be trapped inside the capsule with a density that proportional with concentration of cells used in the encapsulation.
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