Judul: Estimation of Biomass, Carbon and CO2Emissions in Litter and Humus in Gunung Walat Educational Forest, Sukabumi Regency
Abstrak: Hutan Pendidikan Gunung Walat (HPGW) sebagai hutan tanaman memiliki kontribusi serasah dan humus yang cukup tinggi terhadap potensi biomassa, karbon dan emisi CO2. Hal itu dikarenakan serasah dan humus di HPGW sangat melimpah. Penelitian ini bertujuan untuk menduga potensi biomassa, karbon dan menduga emisi CO2 di HPGW. Pengambilan data di lapangan dilakukan secara destruktif dengan metode simple random sampling yaitu peletakan plot contoh secara acak agar menggambarkan dan mewakili tiap tegakan yang ada di HPGW. Plot contoh berbentuk persegi dengan ukuran (2 x 2) m dengan total plot sebanyak 83 plot dengan total sampel yang diambil sebanyak 166 sampel. Pengambilan data di laboratorium dengan mengoven serasah dan humus pada suhu 105 °C selama 24 jam. Hasil dugaan biomassa serasah dan humus secara berturut-turut sebesar 3,91 ton/ha dan 0,923 ton/ha. Pendugaan karbon serasah dan humus secara berturut-turut sebesar 1,839 ton/ha dan 0,434 ton/ha. Emisi CO2 dari proses dekomposisi serasah dan humus secara berturut-turut diperkirakan sebesar 6,74 ton CO2/ha dan 1,59 ton CO2/ha., Gunung Walat Educational Forest (HPGW) as a plantation forest has a high litter and humus contribution to the potential for biomass, carbon and CO2 emissions. because the litter and humus in HPGW is very abundant. The purpose of this research is to estimate the potential of biomass, carbon and to estimate CO2 emissions in HPGW. Data collection in the field was carried out destructively with the simple random sampling method, namely the placement of sample plots at random in order to describe and represent each stand in the HPGW. The sample plots are square with the size (2 x 2) m with a total plot of 83 plots with a total of 166 samples taken. Data were collected in the laboratory by roasting the litter and humus at a temperature of 105 °C for 24 hours. The estimated results of litter and humus biomass were 3.91 tons/ha and 0.923 tons/ha, respectively. Estimation of litter and humus carbon was 1.839 tons/ha and 0.434 tons/ha, respectively. CO2 emissions from the decomposition of litter and humus were estimated at 6.74 tons CO2/ha and 1.59 tons CO2/ha, respectively.
Keyword: biomass, carbon, CO2 emissions, humus, litter

Judul: Pendugaan Potensi Biomassa, Karbon, dan Serapan CO2 pada Tumbuhan Bawah di Hutan Pendidikan Gunung Walat (HPGW), Sukabumi
Abstrak: Tumbuhan bawah adalah suatu jenis vegetasi dasar yang terdapat di bawah tegakan hutan meliputi rerumputan, herba, perdu, dan paku-pakuan. HPGW merupakan hutan tanaman yang telah berubah menjadi hutan alam, sehingga potensi tumbuhan bawah di lokasi tersebut melimpah. Penelitian bertujuan untuk mengetahui potensi biomassa dan cadangan karbon pada tumbuhan bawah serta mengetahui potensinya dalam menyerap karbon dioksida (CO2). Teknik pengambilan data menggunakan metode simple random sampling, dimana plot sampel ditempatkan secara acak tanpa memperhatikan strata yang ada dalam populasi. Plot contoh yang digunakan adalah persegi dengan ukuran (2 × 2) m, total plot contoh yang digunakan dalam penelitian ini adalah 83 plot. Pengambilan data dilakukan di lapangan dan di laboratorium. Pengambilan data lapangan menggunakan metode destructive sampling (memanen seluruh bagian tumbuhan bawah, kecuali akar). Pengambilan data di laboratorium menggunakan oven dengan suhu 105°C dalam waktu 24 jam. Hasil penelitian menunjukkan bahwa rata-rata potensi biomassa, karbon, dan serapan karbon dioksida pada tumbuhan bawah berturut-turut yaitu sebesar 1,16 ton ha-1, 0,55 ton ha-1, dan 2,01 ton ha-1., The undergrowth is a type of base vegetation found under forest stands including grasses, herbs, shrubs, and ferns. HPGW is a plantation forest that has changed into a natural forest, so the potential for undergrowth in that location is very abundant. This study aims to determine the potential for biomass and carbon stock stored in understory plants and determine their potential to absorb carbon dioxide (CO2). The data collection technique used a simple random sampling method, where the sample plots were placed randomly without regard to the existing strata in the population. The sample plot used is a square with a size of (2 × 2) m, the total sample plot used in this study is 83 samples. Data collection is carried out on the ground and in the laboratory. Data collection in the field used the destructive sampling method (harvesting all parts of the understory, except for the roots). Data were collected in the laboratory using an oven with a temperature of 105°C for 24 hours. The result showed that the average potential for biomass, carbon stock, and carbon dioxide absorption in the undergrowth was 1,16 ton ha-1, 055 ton ha-1, and 2,01 ton ha 1, respectively.
Keyword: biomass, carbon dioxide, carbon stock, HPGW, undergrowth

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