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: Effectivity of Bajakah Kalalawit (Uncaria  gambir Roxb) Stem Decoct as Antidiarrhea on Mice (Mus musculus)
Abstrak: Diare merupakan salah satu masalah kesehatan pada manusia maupun hewan. Tanaman bajakah kalalawit sering digunakan sebagai obat tradisional untuk mengatasi penyakit namun belum ada penelitian mengenai efektivitasnya sebagai antidiare. Penelitian ini bertujuan mengetahui efektivitas antidiare dari batang bajakah kalalawit dengan metode proteksi intestinal dan menentukan konsentrasi yang paling efektif. Mencit sebanyak 25 ekor dibagi menjadi lima kelompok perlakuan: kelompok kontrol negatif (tanpa terapi), kontrol positif (loperamide HCl), dan tiga kelompok perlakuan dekok batang bajakah kalalawit dengan konsentrasi 100%, 50%, dan 25%. Parameter yang diamati meliputi hasil fitokimia, dan pengujian pada mencit. Parameter pengujian pada mencit yaitu frekuensi defekasi, konsistensi feses, onset diare, durasi diare, dan waktu persembuhan. Hasil skrining fitokimia menunjukkan adanya kandungan alkaloid, flavonoid, saponin, dan tanin pada batang bajakah kalalawit. Konsentrasi 100% memiliki kemampuan dalam menurunkan frekuensi defekasi dan efektif dalam menekan onset diare. Konsentrasi 50% hanya memiliki kemampuan dalam menurunkan frekuensi defekasi. Sedangkan konsentrasi 25% memiliki kemampuan dalam menurunkan frekuensi defekasi, memperbaiki konsistensi feses, mempersingkat durasi diare, dan mempercepat waktu persembuhan. Berdasarkan hasil tersebut, konsentrasi 25% merupakan konsentrasi yang paling efektif sebagai antidiare pada mencit., Diarrhea is a health problem in humans and animals. The bajakah kalalawit plant is often used as a traditional medicine to treat disease, but there has been no research on its effectiveness as an antidiarrhea. This study aims to determine the antidiarrheal effectiveness of bajakah kalalawit stems using the intestinal protection method and determine the most effective concentration. Twenty-five mice were divided into five treatment groups: negative control group (no therapy), positive control (loperamide HCl), and three groups treated with bajakah kalalawit stem decoction with concentrations of 100%, 50%, and 25%. The parameters observed included phytochemical results and tests on mice. The test parameters in mice are defecation frequency, stool consistency, onset of diarrhea, duration of diarrhea, and recovery time. The results of the phytochemical screening showed that there were alkaloids, flavonoids, saponins and tannins in the bajakah kalalawit stems. The 100% concentration has the ability to reduce the frequency of defecation and is effective in suppressing the onset of diarrhea. The 50% concentration only has the ability to reduce defecation frequency. Meanwhile, the 25% concentration has the ability to reduce the frequency of defecation, improve stool consistency, shorten the duration of diarrhea, and speed up healing time. Based on these results, the 25% concentration is the most effective concentration as an antidiarrhea in mice.
Keyword: antidiare, proteksi intestinal, bajakah kalalawit, dekok

Judul: Sistem Instrumentasi Berbasis Kristal Fotonik Satu Dimensi untuk Pengukuran Parameter Gas NO2 pada Indeks Standar Pencemar Udara
Abstrak: The objective of this research was to build an integrated instrumentation based on one dimensional photonic crystal for NO2 gas measurement. The phenomenon of photonic pass band has been used as an optical detection for liquid concentration measurement. Photonic crystal, light emitting diode, and photodiode were designed to operate in NO2 absorption spectra that are in the range between 500 – 600 nm. The integrated optical instrument consists of three major subsystems i.e. optical sensor based on photonic crystal, signal conditioning, as well as control and data processing. The experimental results showed that the instrument was able to detect and measure the variation of NO2 gas concentration with resolution about 8 bit per μg/m3 equivalent to 14 bit/ppb.
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