Judul: Pembuatan karbon aktif dari strobilus pinus (Pinus merkusii) sebagai elektroda superkapasitor
Abstrak: Superkapasitor merupakan salah satu perangkat penyimpanan yang saat ini banyak diteliti karena memiliki keunggulan jika dibandingkan dengan kapasitor konvensiaonal. Pada penelitian ini dibuat superkapasitor dengan menggunakan elektroda yang terbuat dari karbon aktif, yang memanfaatkan strobilus pinus atau lebih dikenal dengan bunga pinus. Strobilus pinus terlebih dahulu dikarbonisasi dan diaktifasi secara kimia dan fisika. Dengan variasi KOH (1 N, 3 N, 5 N) yang dilakukan untuk memperlihatkan perubahan dari karakteristik karbon aktif. Selanjutnya karbon aktif yang telah dibuat diukur resistansinya dengan menggunakan LCR, untuk selanjutnya dikarakterisasi dengan XRD untuk melihat perubahan struktur kristal yang terjadi. Selanjutnya karbon aktif dibentuk menjadi elektroda dengan mencampurkan Poly (vinylidene fluoride) polytetra dan 1-methyl-2-pyrrolidone, yang kemudian diletakan diatas stainles steel. Selanjutnya dilakukan pengukuran besarnya nilai kapasitansi elektroda yang didapat dengan menggunakan potensiostat. Besarnya kapasitansi yang didapat adalah sebesar 0.118 F∙g-1 pada elektroda dengan variasi KOH 3 N yang diukur pada laju 10 mV∙s
Keyword: Electrodes, activated carbon, supercapacitors, strobilus pine

Judul: Pembuatan Nanokarbon dari Limbah Baterai untuk Aplikasi Elektroda pada Superkapasitor
Abstrak: Carbon material is waste battery electrodes for supercapacitors are high potentially, since it has a high surface area, good chemical stability, and high conductivity. These carbon-based electrodes are promising candidates for energy storage devices with high performance is supercapacitor. Supercapacitor which has great potential in the storage of electrical charge, so it can be used as of equivalent fuel oil for motor vehicles, but it also wastes the battery can be recycled, thus reducing the danger of environmental pollution and public. Carbon material waste converted into nano-size batteries using High Energy Milling (HEM), to find out in the form of nano size using Particle Size Analyzer (PSA) produced 148.54 nm particle size. Furthermore, carbon material is a mixed nano size Poly (vinylidene fluoride) Polytetra and 1-methyl-2-pyrrolidone, glued in stainless steel. Results of carbon morfology form characterized using Scanning Electron Microscopy (SEM), crystallinity characterization of structures using X-Ray Diffraction (XRD), with a conductivity value of 7374.00 S/m. This suggests that carbon is a semiconductor material. Results of capacitance value with potentiostat 179.40 F/g for scan rate 5 mV/s.
Keyword: PSA, potentiostat, Carbon waste batteries, HEM, supercapacitor electrodes

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