Judul: Simulation of determination fan position for uniformity pattern  heat air flow at Greenhouse Effect (GHE) solar dryer rack type with Computational Fluid Dynamics (CFD)
Abstrak: Pengering Efek Rumah Kaca (ERK) adalah bangunan pengering berdinding transparan, di dalamnya terdapat plat absorber sebagai pengumpul panas dan wadah produk (rak atau bak) serta kipas untuk mengeluarkan uap air hasil pengeringan atau sebagai penyeragaman suhu di dalam pengering. Sumber energi pada pengering ERK diperoleh dari surya dan pembakaran biomassa. Masalah ketidakmerataan aliran udara panas di dalam ruang pengering, masih menjadi salah satu yang selalu terjadi. Pemecahan masalah ketidakmerataan aliran udara panas dapat dilakukan dengan metode Computational Fluid Dynamics (CFD). Penelitian ini bertujuan untuk mensimulasikan aliran udara panas dalam ruang pengering, lalu memvalidasikan hasil tersebut dan memodifikasi posisi kipas untuk sebaran udara panas yang lebih seragam. Metode simulasi dengan CFD dapat digunakan untuk mengetahui pola aliran udara panas dalam pengering. Validasi suhu dilakukan pada pukul 08.00, 12.00 dan 16.00 dengan kondisi tanpa beban, menunjukkan hasil simulasi yang sesuai dengan kondisi nyata. Modifikasi posisi penempatan kipas menggunakan 5 skenario. Pada simulasi modifikasi dengan kondisi memakai beban pada pukul 12.00 hari pertama pengeringan. Menunjukkan bahwa modifikasi 5, yaitu posisi kipas pada outlet atas sebelah kiri dan kanan pengering memberikan hasil distribusi suhu udara pengering yang paling seragam.
Keyword: heat air flow, GHE, CFD

Judul: Penentuan Putaran pada Pengering Surya Tipe Rak Berputar dan Pemodelan Pengering dengan Metode Computational Fluid Dynamics
Abstrak: Greenhouse Effect (GHE) Solar Dryer is a transparent wall structure, consists of an absorber plate as solar collector, product holders (rack, tray or batch) that can be rotated vertically, and fans to discharge vapor evaporated from product The GHE solar dryer uses thermal energy source from the sun and biomass combustion. Un-uniformity of rack temperature problem can be solved by rotate the rack within the dryer. The aim of the study is to determine the properly of rack rotation and the temperature distribution by using Computational Fluid Dynamics (CFD) method. There are six scenarios of rack rotation condition to be simulated. The best result is scenario 5 at 135o with rotation per hour shown by the best uniformity of drying temperature indicated by the lowest temperature standar deviation. Validation of CFD result drying temperature whichis performed at eight and twelve o’clock without product, have shown similar trend to the experiment drying temperature distribution indicated by error value of 10%.
Keyword: Rack Temperature, GHE, CFD

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