Judul: Persamaan Matematika untuk Struktur Tegakan Horizontal Hutan Mangrove di Pantai Timur Kota Surabaya
Abstrak: Mangrove forest is one of the coastal ecosystems which have important roles in development and management of East Coast Surabaya so information about species and stand structure of the mangrove forest are needed. The purpose of this study is arranging mathematic equation for horizontal stand structure which describe horizontal stand structure according dominant species and stand conditions, includes undisturbed natural stand, disturbed natural stand, and unnatural stand. Data was collected from 10  10 m sample plot and selected by purposive sampling. Composing and analyzing of mathematic equation used negative exponential function N = N0e-kD. Undisturbed natural stand and unnatural stand which dominated by api-api (genus Avicennia) specieses have high density, composed by large numbers of small diameter trees, and a sharp decline number of larger diameter trees. Instead, the trees distribution of undisturbed natural stand dominated by bogem (Sonneratia caseolaris) are proportioned enough but it has less regeneration, a low density, and the ability of natural regeneration is relatively slow.
Keyword: horizontal stand structure, mangrove

Judul: Komposisi Jenis dan Persamaan Matematika untuk Struktur Tegakan Horizontal Hutan Rakyat di Desa Kalimendong
Abstrak: Stand structure can be used to identify the plantation characteristic. That is important for determining treatment of silviculture. This research purpose is to find out the information of mathematic equation in every private community forest in Kalimendong Village. This research was conducted in Kalimendong Village, Wonosobo Distrct in May 2014 (2 weeks). Data was collected using census method, where the measurement was done in every stands on private lands. Processed data was confined to dominating stands which is Sengon with 519 Sengon trees. Sengon’s variables is diameter and basal area presented in histogram. In order to explain more about stands distribution, data analyzed using normal distribution function. The result showed that the mathematic equation in every private land can be accepted with coefficient of determination (R²) more than 0.5 and p-value less than 0.05. Distribution form obtained from this research is polynomial function and negative exponential. Plantation characteristic specifically known from inverted bell curve but Sutarman and Waluyo land has inverted ‘’J’’ c
Keyword: Bogor Agricultural University (IPB), stands structure, mathematic equation

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