Judul: Estimating the Potential of Above-Surface Biomass in the Mbeliling Forest Area of East Nusa Tenggara Using Landsat 8 Satellite Imagery
Abstrak: Pemanasan global terjadi akibat akumulasi gas efek rumah kaca seperti CO2, CH4, NO2, HFCs, PFCs, dan SF6 di atmosfer. Hutan memiliki peran sebagai penyimpan dan penyerap karbon, hal ini sangat penting dalam mengatasi terjadinya pemanasan global yang diakibatkan oleh gas rumah kaca. Penelitian ini bertujuan menduga potensi biomassa menggunakan indeks vegetasi dan nilai digital Citra Landsat 8 serta membuat peta sebaran biomassa berdasarkan model pendugaan terbaik. Penghitungan biomassa lapangan menggunakan rumus allometrik. Model regresi terbaik dipilih berdasarkan parameter uji-F, nilai koefisien determinasi (R2), nilai koefisien determinasi terkoreksi (R2-adj) dan nilai RMSE. Model regresi Multiplikatif terpilih menjadi model terbaik dengan persamaan Y = 10^-1.576 x BAND6^-0.673 x BAND9^-1.176., Global warming occurs due to the accumulation of greenhouse gases such as CO2, CH4, NO2, HFCs, PFCs and SF6 in the atmosphere. Forests have a role as a carbon store and absorber, this is very important in overcoming global warming caused by greenhouse gases. This study aims to estimate the biomass potential using the vegetation index and digital values of Landsat 8 imagery and to create a biomass distribution map based on the best estimation model. Calculation of field biomass using the allometric formula. The best regression model was selected based on the F-test parameters, the value of the coefficient of determination (R2), the value of the corrected coefficient of determination (R2-adj) and the RMSE value. Multiplicative regression model was chosen to be the best model with the equation Y = 10^-1.576 x BAND6^-0.673 x BAND9^-1.176 .
Keyword: biomass, citra landsat 8, mapping, regression

Judul: Pendugaan Potensi Biomassa Atas Tegakan Jati (Tectona Grandis Linn. F) Menggunakan Citra Landsat 8 Di BKPH Wilangan Selatan, KPH Saradan
Abstrak: Landsat 8 merupakan satelit pemantau sumberdaya alam yang memiliki sensor Onboard Operational Land Imager (OLI) dan Thermal Infrared Sensor (TIRS) dengan 10 buah kanal multispektral dan satu buah kanal pankromatik. Penelitian ini bertujuan untuk merumuskan model pendugaan potensi biomassa berdasarkan nilai digital band dari Citra Landsat 8 dan nilai digital indeks vegetasi serta membuat peta sebaran potensi biomassa dari persamaan model terbaik. Perhitungan biomassa dilakukan dengan menggunakan persamaan alometrik. Pemilihan model terbaik dilakukan berdasarkan parameter uji-F, nilai koefisien determinasi terkoreksi (R2 adj) dan nilai RMSE. Hasil menunjukan bahwa model regresi terbaik, yaitu model eksponensial Y = e (28.24 – 0.00594 Band 5 + 0.00316 Band 6 – 21.88 TVI) dengan nilai R2 dan R2 adj paling besar yaitu 80.66 % dan 79.95 % dengan nilai RMSE paling kecil sebesar 0.598. Model regresi terbaik digunakan sebagai dasar dalam pembuatan peta sebaran biomassa. Hasil dari evaluasi akurasi menunjukan nilai overall accuracy sebesar 92.12 % dan kappa accuracy sebesar 87.64 % pada pemetaan dengan 3 kelas.
Keyword: biomassa, landsat 8, model penduga, pemetaan

Judul: Studi Kasus Liver Neoplasia pada Anjing Shih Tzu
Abstrak: Liver neoplasia is the excessive and uncontrolled replication of hepatocytes that forms nodules visible in ultrasonography. The purpose of this study is to study and discuss the characteristic, diagnosis and treatment of liver neoplasm through the interpretation of ultrasonography and hematology in a Shih Tzu dog. Ultrasonography is conducted with a Chison Q8 ultrasound machine with a 5 to 7 MHz frequency convex probe on lateral recumbency. The blood cells, liver enzymes and nodules sizes were the main parameters in this study. The results in the period of three years from 2021 to 2023 were interpreted and supported with secondary data sources. The Shih Tzu dog is 14 years old in the year 2023 with a body weight of 5.21kg. No obvious clinical signs were observed during previous examinations. However, lethargy, vomiting and anorexia were recorded in its latest examination. Thrombocytosis, granulocytosis, high liver enzymes and hypoglycemia, which are some of the neoplastic clinical manifestations were also presented by this patient. Besides, liver neoplasm, spleen neoplasm and biliary sludge were the sonogram findings of this patient. The liver and spleen neoplasm was observed stable, while the biliary sludge volume fluctuated. The treatment strategy recorded is Ondansetron, Samylin®, Ornipural and Ursodeoxycholic acid.
Keyword: Blood biochemistry profile, Hematology, Liver Neoplasia, Shih Tzu, Ultrasonography