Judul: Aktivitas Antidiare Dekok Kayu Bajakah Tampala (Spatholobus littoralis Hassk.) pada Mencit (Mus musculus)
Abstrak: Secara empiris, kayu bajakah tampala telah digunakan oleh masyarakat Dayak secara turun-temurun sebagai pengobatan untuk berbagai macam penyakit. Penelitian ini bertujuan mengetahui kandungan senyawa kayu bajakah tampala dengan menggunakan skrining fitokimia, rebusan kayu bajakah tampala memiliki khasiat sebagai antidiare dan konsentrasi paling efektif yang memberikan efek antidiare terbaik pada mencit. Pengujian Kelompok eksperimen terdiri dari 2 kelompok kontrol (positif dan negatif) dan 3 kelompok perlakuan dengan konsentrasi rebusan kayu bajakah tampala (25%, 50%, 100%). Mencit diinduksi secara oral dengan rebusan kayu bajakah tampala sebelum pemberian minyak jarak. Hasil tes fitokimia kayu bajakah tampala mengandung senyawa metabolit sekunder yaitu alkaloid, flavonoid, saponin, dan tannin. Hasil penelitian ini menunjukkan bahwa konsentrasi terbaik menunjukan pada konsentrasi 25% dan kayu bajakah tampala mampu memberikan perlindungan terhadap diare yang disebabkan oleh minyak jarak., Empirically, bajakah tampala wood has been used by Dayak people for generations as a treatment for various diseases. This study aims to find out the content of bajakah tampala wood compounds using phytochemical screening, to determines bajakah tampala wood decoction has efficacy as an anti-diarrhea and the most effective concentration that provides the best antidiarrheal effect in mice. The experimental groups consisted of two control groups (positive and negative) and three treatment groups with bajakah tampala wood decoction concentrations (25%, 50%, 100%). Following treatment, observations were conducted on the test parameters, including diarrhea frequency, stool consistency, onset of diarrhea, duration of diarrhea, and recovery time. Animals were orally treated with bajakah tampala wood decoction before administering castor oil. The results of phytochemical screenings of bajakah tampala wood contain secondary metabolite compounds, namely alkaloids, flavonoids, saponins, and tanninss. The results of this research show that the best concentration is 25% and bajakah tampala wood can provide protection against diarrhea caused by castor oil.
Keyword: antidiare, fitokimia, kayu bajakah tampala, obat tradisional, proteksi intestinal

Judul: Effectiveness of Bajakah Ji Xue Teng (Spatholobus suberectus Dunn) Decoction as an Antidiarrheal in Mice (Mus musculus)
Abstrak: Tanaman bajakah ji xue teng telah banyak digunakan dalam pengobatan tradisional untuk mengatasi penyakit selama hampir 1000 tahun. Penelitian ini bertujuan mengetahui efektivitas antidiare dekok bajakah ji xue teng menggunakan metode proteksi intestinal serta menentukan konsentrasi yang efektif pada mencit. Mencit dibagi menjadi lima kelompok yang terdiri atas kelompok kontrol positif (loperamid HCl), negatif (tween 80 [1%]), dan tiga kelompok perlakuan dekok bajakah ji xue teng dengan konsentrasi bertingkat (25, 50, dan 100%). Parameter yang diujikan dalam penelitian ini adalah konsistensi feses, frekuensi feses, dan durasi defekasi. Hasil skrining fitokima menunjukkan bahwa terdapat kandungan senyawa metabolit sekunder yang ada pada tanaman bajakah yaitu saponin, flavonoid, fenolik, dan tanin. Hasil pengujian proteksi intestinal menunjukkan dekok bajakah ji xue teng memiliki efek antidiare dengan hasil paling baik ditunjukkan pada kelompok konsentrasi bajakah ji xue teng 50%., The Bajakah Ji Xue Teng plant has been widely used in traditional medicine to treat diseases for nearly 1,000 years. This study aims to determine the antidiarrheal effectiveness of Bajakah Ji Xue Teng decoction using the intestinal protection method and to identify the effective concentration in mice. Mice were divided into five groups: a positive control group (loperamide HCl), a negative control group (tween 80 [1%]), and three treatment groups with Bajakah Ji Xue Teng decoction at varying concentrations (25, 50, and 100%). The parameters tested in this study were stool consistency, stool frequency, and defecation duration. Phytochemical screening results indicated the presence of secondary metabolite compounds in the Bajakah plant, such as saponins, flavonoids, phenolics, and tannins. The results of intestinal protection testing showed that the decoction of bajakah ji xue teng has antidiarrheal effects, with the best results observed in the group with a 50% concentration of bajakah ji xue teng.
Keyword: kayu bajakah tampala, dekok, antidiarrhea, decoction, intestinal protection, mice

Judul: Approximation of the Median of Poisson Distribution Using the Relation of Poisson-Gamma Distribution
Abstrak: A major drawback of median is that median cannot usually be defined in closed form, even in the cases where their distribution functions are known. This study gives an approximation of the closed form for the median of the Poisson distribution by using the relation of Poisson-Gamma distribution. The approximation uses elementary techniques based on the monotonicity of certain sequences involving tail probabilities of the Poisson distribution and the Central Limit Theorem. Furthermore, a closed form expression for the mean absolute deviation 􀜧|􀜰􀰒 􀵆 􀜯􀝁􀝀􁈺􀜰􀰒􁈻| is also studied. The median is relevant because of the fact that it minimizes the mean absolute deviation of a Poisson random variable (􀜰􀰒􁈻 by considering median as central tendency.
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