Judul: Kajian Toksikopatologi Pemberian Capsaicin Peroral terhadap Organ Lambung dan Usus Mencit C3H
Abstrak: Capsaicin is an active compound grouped in capsaicinoid in pepper plants. Capsaicin has many pharmacologic effect including cluster headcache therapy, postherpetic neuralgia, chronic pain, arthritis, diabeticneuropathic pain, and against a wide variety of tumor and cancer cells. The researcch was conducted to identify toxic effect of stomach and intestine that can be caused by capsaicin administered orally. Twelve mice straint C3H were divided into three groups: groups K1 (control), groups K2 (2 weeks treatment), and groups K3 (4 weeks treatment). Capsaicin was administered perorally for 2 weeks in K2 and 4 weeks in K3. The mice was necropsed, then the stomach and intestine were fixed in Buffer Neutral Formalin (BNF) for histopathological preparation. The results showed that capsaicin causes congestion, infiltration of inflammatory cell, and epithelium desquamation of the stomach and intestines. Based on these results, oral capsaicin is not safe for stomach and intestine.
Keyword: toxicopathology, stomach, C3H mice, capsaicin, Bogor Agricultural University (IPB)

Judul: Gambaran Toksikopatologi Organ Hati dan Ginjal Mencit C3H Pasca Pemberian Capsaicin
Abstrak: Capsaicin is the mayor compound founds in chilli peppers of the Capsicum genus. Capsaicin has been shown to have antiproliferative activity to intestine, liver, prostate, and leucocytes cancer cells in vitro. The liver and kidney are the main target of toxic effect. The research was conducted to know the effect of capsaicin to liver and kidney toxicopathology of C3H mice. Twelve mice strain C3H were divided into 3 groups. Groups 1 as a negative control were not administered capsaicin. Groups 2 were administered capsaicin for 2 weeks. Groups 3 were administered capsaicin for 4 weeks. The capsaicin was administered perorally with 10 mg/kgBW dose. Clinical observations made throughout the treatment period. Then, the mice euthanized and their organs were observed and preparated for histopathology stained hematoxylin-eosin (HE) and immunohistochemistry (CPI) using TNF-α antibody. The gross anatomy and histopathology showed that the mice treated capsaicin for 2 weeks showed average damage to the liver and kidney, while mice treated capsaicin for 4 weeks suffered severe damage to the liver and kidney. This shows the lack of security levels of capsaicin to the liver and kidneys.
Keyword: toxicopathology, liver, kidney, C3H mice, capsaicin, Bogor Agricultural University (IPB)

Judul: Best Difference Equation Aproximation to Duffing 's Equation
Abstrak: Persamaan Duffing merupakan persamaan yang sering muncul sebagai model masalah sistem ayun mekanis atau pada masalah rangkaian listrik. Umumnya penyelesaian persamaan ini secara numerik memberikan hampiran dengan gala! yang tinggi, seperti dengan metode Runge-Kutta. Tulisan ini mengkonstruksi suatu persamaan beda untuk menghampiri persamaan Duffing tersebut. Penyelesaian dari persamaan beda ini melibatkan fungsi-fungsi eliptik Jacobi. Berdasarkan penyelesaian ini diperoleh basil bahwa penyelesaian hampirannya persis sama dengan penyelesaian analitiknya. Penyelesaian analitik yang diperolehjuga melibalkan fungsi-fungsi eliptik Jacobi.
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