Judul: The Effect of Rainfall and Forest and Land Fires in East Tanjung Jabung Regency, Jambi Province
Abstrak: Kabupaten Tanjung Jabung Timur merupakan salah satu kabupaten paling timur dari Provinsi Jambi dengan luasan lahan gambut terluas di Provinsi Jambi. Penelitian bertujuan untuk mengetahui pengaruh curah hujan dan kaitannya dengan hotspot sebagai indikator terjadinya kebakaran hutan dan lahan gambut di Kabupaten Tanjung Jabung Timur, Provinsi Jambi. Data yang digunakan dalam penelitian ini bersumber dari NASA FIRMS untuk hotspot dan NASA POWER untuk curah hujan yang dianalisis secara deskriptif dan korelasi. Hasil penelitian menunjukkan jumlah hotspot tahunan dari tahun 2018 – 2022 sebanyak 1696 titik dengan 1075 titik berada pada lahan gambut dan 621 lainnya pada lahan mineral. Peningkatan terjadi di tahun 2019 sebanyak 1636 titik disebabkan kejadian kebakaran yang menjangkau 5151,02 ha. Hasil analisis korelasi menunjukkan curah hujan dengan hotspot tidak memiliki korelasi yang signifikan dengan koefisien korelasi negatif kuat sehingga peningkatan hotspot diikuti dengan penuruan curah hujan, dan sebaliknya., East Tanjung Jabung Regency is one of the easternmost districts of Jambi Province and has the largest peatland area in Jambi Province. The research aims to determine the effect of rainfall and its relation to hotspots as an indicator of forest and peatland fires in East Tanjung Jabung Regency, Jambi Province. The data used in this study were sourced from NASA FIRMS for hotspots and NASA POWER for rainfall, which were analyzed descriptively and correlationally. The results of the study show that the number of annual hotspots from 2018 to 2022 is 1696, with 1075 points on peatlands and 621 others on mineral lands. The increase occurred in 2019 by 1636 points due to fire incidents that covered 5,151.02 ha. The results of the correlation analysis show that rainfall with hotspots does not have a significant correlation with a strong negative correlation coefficient, so an increase in hotspots is followed by a decrease in rainfall, and vice versa.
Keyword: Curah Hujan, hotspot, Kabupaten Tanjung Jabung Timur, Kebakaran Hutan dan Lahan

Judul: Analysis of Hotspots, Precipitation, and Sea Surface Temperature Anomalies in East Tanjung Jabung Regency, Jambi
Abstrak: Kebakaran hutan dan lahan merupakan permasalahan serius yang terjadi setiap tahun di Indonesia. Penelitian ini bertujuan mengidentifikasi keterkaitan antara titik panas (hotspot), curah hujan, dan anomali Sea Surface Temperature (SST) sebagai indikator potensi terjadinya kebakaran gambut di Kabupaten Tanjung Jabung Timur. Penelitian ini dilaksanakan pada bulan September-Desember 2023. Data yang digunakan adalah data sekunder. Uji korelasi dilakukan antara data hotspot, curah hujan bulanan, dan SSTA Nino 3.4 pada tahun 2015-2022 untuk mengetahui adanya hubungan antara curah hujan dengan jumlah hotspot yang terdeteksi dan faktor yang memengaruhinya. Hasil dari penelitian ini adalah hubungan hotspot dengan curah hujan berkorelasi negatif dengan nilai r sebesar -0.401 yang termasuk dalam kategori cukup, dan hubungan hotspot dengan anomali SST berkorelasi positif. Hal ini menunjukkan bahwa jumlah hotspot di Kabupaten Tanjung Jabung Timur pada tahun 2015-2022 berkaitan erat dengan curah hujan, namun tidak terlalu erat dengan SST anomalies., Forest and land fires are a serious problem that occurs every year in Indonesia. This research aims to identify the relationship between hotspots, precipitation and Sea Surface Temperature Anomalies (SSTA) as indicators of the potential for peatland fires in East Tanjung Jabung Regency. This research was conducted in September-December 2023. The data used is secondary data. Correlation tests were carried out between hotspot data, monthly precipitation, and SSTA Nino 3.4 in 2015-2022 to determine the relationship between precipitation, the number of hotspots detected, and the factors that influence them. The results of this research are that the relationship between hotspots and precipitation is negatively correlated with an r value of -0.400 which is included in the sufficient category, and the relationship between hotspots and anomaly SST is positively correlated. These findings showed that the number of hotspots in East Tanjung Jabung Regency is closely related to precipitation but not too closely with SST anomalies.
Keyword: curah hujan, titik panas, kebakaran gambut, nino 3.4

Judul: Synthesis of Apatite - Chitosan Composite Using Duck Eggshell and Chitosan with Temperature and pH Control
Abstrak: Composite of apatite-chitosan was prepared by using chitosan as polymer matrix. Calcium phosphate was prepared from CaO and (NH4)2HPO4, which the ratio Ca : P had to be 1.67. Chitosan is produced by deacetilase from biopolymer chitin. Duck eggshell (95% CaCO3) as starting material was converted to be calcium oxide (CaO) through calcinations with temperature 1000oC for 5 hours. In-situ and ex-situ methods were prepared from apatite and chitosan (dissolved with acetate acid 2%). Calcium phosphate prepared for bone implantation, but it is too fragile and brittle to be implant into the body. So addition of chitosan can decrease crystalinity and increase mechanic characteristic (tougher). Composite apatite-chitosan was resulted by fast precipitation. Fast precipitation was held in a breaker glass with nitrogen atmosphere, under controlled temperature at 37oC and pH 7, in order to increase amount of hydroxyapatite. Precipitation with CaO which was dropped by (NH4)2HPO4. Hydroxyapatite and chitosan were appearing at samples with in-situ and ex-situ methods which indicating by peak matching of XRD (closed lattice parameter, crystal size), overlapping at FTIR spectra and supporting by SEM picture (homogenous and agglomerated particle). However, it still needs further research to examine biocompatibility osteoconductive degree of sample by in-vivo and in-vitro test.
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