Judul: Aktivitas Antidiare Biji Jamblang (Syzygium cumini) pada Mencit (Mus musculus), Aktivitas Antidiare Biji Jamblang (Syzygium cumini) pada Mencit (Mus musculus)
Abstrak: Di Indonesia, diare masih dikategorikan sebagai penyakit yang umumnya ditemukan di daerah atau populasi tertentu, dan memiliki potensi untuk menyebabkan wabah dan kematian. Pengobatan tradisional sangat umum digunakan dan diterima di Indonesia, terutama di daerah pedesaan yang aksesnya terbatas pada fasilitas kesehatan modern. Tanaman Jamblang (Syzygium cumini) populer dalam praktik pengobatan tradisional karena efek terapinya. Bagian-bagian dari tanaman Jamblang (Syzygium cumini) seperti akar, batang, biji, dan daun telah banyak dimanfaatkan dalam pengobatan tradisional untuk mengobati masalah pencernaan. Penelitian ini bertujuan untuk menentukan efek pelindung usus dari infus biji Jamblang. Penelitian ini menggunakan metode perlindungan usus dan transit usus untuk mendapatkan data dan informasi ilmiah tentang aktivitas antidiare dari infus biji Plum Jawa terhadap diare yang diinduksi minyak jarak pada tikus. Dalam penelitian ini, 25 mencit dibagi menjadi lima kelompok: kontrol negatif (tween 1%), kontrol positif (Loperamida HCL), dan tiga kelompok perlakuan yang diberikan infus biji Plum Jawa dengan konsentrasi 50%, 75%, dan 100% secara oral. Hasil penelitian menunjukkan bahwa infus biji Plum Jawa memiliki efek antidiare terhadap minyak jarak. Ketiga konsentrasi tersebut memiliki efek antidiare dalam metode perlindungan usus, sedangkan hanya konsentrasi 50% dan 75% yang memiliki efek antidiare dalam metode transit usus. Infus biji Jamblang dengan konsentrasi 50% menunjukkan efek antidiare terbaik dalam kedua metode pengujian., In Indonesia, diarrhea is still categorized as an intestinal disorder that is commonly present in a particular region or population, and it also has the potential to cause outbreaks and fatalities. Traditional medicine is widely used and accepted in Indonesia, especially in rural areas where access to modern healthcare facilities is limited. Java Plum (Syzygium cumini) is popular in the practice of traditional medicine due to its therapeutic properties. Parts of Java Plum (Syzygium cumini L.) such as roots, stems, seeds and leaves have been widely utilized in traditional medicine to treat digestive problems. This study aims to determine the intestinal protective effects of Java Plum seed infusion. This study used intestinal protection and intestinal transit methods to obtain scientific data and information about the antidiarrheal activity of Java Plum seed infusion against castor oil-induced diarrhea in mice. In this study, 25 mice were divided into five groups: negative control (tween 1%), positive control (Loperamide HCL), and three treatment groups which were given Java Plum seed infusion with concentrations of 50%, 75%, and 100% orally. The results showed that Java Plum seed infusion demonstrates an antidiarrheal effect against castor oil. All 3 concentrations had an antidiarrheal effect in the intestinal protection method, whereas only 50% and 75% had an antidiarrheal effect in the transit intestinal method. Java Plum seed infusion with 50% concentration demonstrates the best antidiarrheal effect in both test methods.
Keyword: Java Plum seed, antidiarrhea, infusion, traditional medicine

Judul: Effectiveness Test of Watery Rose Apple Leaves  Decoction (Syzygium samarangense Blume) as Antidiarrheal in Mice (Mus  musculus)
Abstrak: Tanaman jambu air telah banyak digunakan sebagai obat herbal dalam mengatasi penyakit, akan tetapi belum ada penelitian mengenai aktivitas antidiare pada tanaman ini. Penelitian ini bertujuan mengetahui aktivitas antidiare dari daun jambu air dengan dua metode yakni metode proteksi intestinal dan transit intestinal. Penelitian ini menggunakan 30 ekor mencit jantan yang dibagi menjadi enam kelompok perlakuan: kelompok kontrol positif (Loperamide HCl), kelompok kontrol negatif (Tween-80 [1%]), dan empat kelompok perlakuan dekok daun jambu air dengan konsentrasi 12,5%, 25%, 50%, dan 100%. Parameter yang diamati pada metode proteksi intestinal yaitu frekuensi defekasi dan konsistensi feses, sedangkan pada metode transit intestinal yaitu rasio lintasan penanda usus. Berdasarkan kedua metode tersebut, dekok daun jambu air dengan konsentrasi 12,5%, 25%, 50%, dan 100% mempunyai aktivitas antidiare. Dekok daun jambu air dengan konsentrasi 12,5% menunjukkan aktivitas antidiare yang paling efektif., Watery rose apple plants have been widely used as herbal medicine in overcoming diseases, but there has been no research on the antidiarrheal activity of this plant. This study aims to determine the antidiarrheal activity of watery rose apple leaves with two methods, namely intestinal protection and intestinal transit methods. This study used 30 male mice which were divided into six treatment groups : the positive control group (Loperamide HCl), the negative control group (Tween-80 1%), and four treatment groups of watery rose apple leaf decoction with concentrations of 12.5%, 25%, 50%, and 100%. The parameters observed for intestinal protection method were defecation frequency and stool consistency, while for intestinal transit method intestinal were marker passage ratio. Based on both methods, watery rose apple leaves decoction with concentrations of 12.5%, 25%, 50%, and 100% had antidiarrheal activity. Watery rose apple leaves decoction with a concentration of 12.5% showed the most effective antidiarrheal activity.
Keyword: antidiarrheal, intestinal protection, intestinal transit, watery rose apple

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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