Judul: The Effects of Avocado Oil (Persea americana Mill.) as Hair Growth Promoters on Rats (Rattus novergicus)
Abstrak: Essential oils and carrier oils are commonly used as pharmacology cosmetics in promoting hair growth. Avocado oil is one of the carrier oils rarely discussed as a hair growth-promoting cosmetics as compared to other oils. This study determined the effects of avocado oil (Persea americana Mill.) as hair growth promoter on rats (Rattus norvegicus). A total of 6 rats were used and each rat was divided into 4 treatment areas: control, 1 smear a day, 2 smears a day, and 3 smears a day. The parameters are hair length and irritation reaction. Data were collected on day 6th, 9th, 12th and 15th. Descriptive analysis was initially performed to examine the trend of the data. Based on the trend of the data, the treatment of 1 smear a day showed a slight increase in hair length. Subsequently, ANOVA one-way and Tukey tests were conducted to determine the statistical significance of the results. The statistical analysis results indicated that avocado oil did not have a significant effect as a hair growth promoter. Furthermore, no signs of irritation were observed on the application site of the rats. In conclusion, while the descriptive analysis suggested 1 smear a day of avocado oil show effects as hair growth promoter, however the subsequent statistical analysis only support little significant effect.
Keyword: avocado oil, hair growth, irritation

Judul: Efektivitas Minyak Kemiri (Aleurites moluccana L.) sebagai Penumbuh Rambut pada Tikus (Rattus norvegicus).
Abstrak: Rambut rontok merupakan masalah yang banyak dijumpai dan mengakibatkan kebotakan. Kebotakan dapat dicegah dengan produk sintetis maupun herbal, namun produk sintetis dapat menimbulkan efek samping. Minyak kemiri mampu menjadi alternatif pengobatan karena terbuat dari bahan alam dan aman digunakan. Penelitian ini bertujuan menguji efektivitas minyak kemiri sebagai penumbuh rambut. Kelompok perlakuan terdiri atas kelompok kontrol tanpa pengolesan (A), kelompok dengan pengolesan sekali sehari (B), kelompok dengan pengolesan dua kali sehari (C), dan kelompok dengan pengolesan tiga kali sehari (D). Panjang rambut diukur dan uji iritasi dilakukan pada hari ke-6, 9, 12, dan 15 dengan perlakuan diberikan setiap hari secara topikal pada punggung tikus yang telah dicukur. Hasil penelitian menujukkan bahwa minyak kemiri memiliki efektivitas sebagai penumbuh rambut. Uji efektivitas minyak kemiri sebagai penumbuh rambut menunjukkan pertumbuhan rambut yang lebih cepat secara statistik dibandingkan kontrol pada frekuensi pengolesan tiga kali sehari dan tidak berbeda nyata dibandingkan dengan pengolesan satu kali dan dua kali sehari. Uji iritasi yang dilakukan tidak menunjukkan adanya iritasi pada punggung tikus., Hair loss is a common problem and it can cause baldness. Baldness may be prevented with synthetic or herbal product, however synthetic products may have side effects. Candlenut oil can be used as an alternative treatment because it is made from natural ingredients and also safe to use. This study aims to test the effectiveness of pure candlenut oil as hair growth promoters. The treatment groups consisted of control rats without smearing of candlenut oil (A), rats receiving smearing of candlenut oil once a day (B), rats receiving smearing of candlenut oil twice a day (C), and rats receiving smearing of candlenut oil three times a day (D). Hair length was measured and irritation tests were carried out on day 6th, 9th, 12th, and 15th with the topical treatment daily on the shaved areas at the back of the rats. The results of the study show that pure candlenut oil has effectiveness as hair growth promoter. The fastest hair growth was found in rats receiving smearing of candlenut oil three times a day. There was no significant difference in hair growth in rats receiving smearing of candlenut oil once and twice a day compare to control. The irritation test did not show any sign of irritation on the rat's back.
Keyword: baldness, candlenut oil, hair, hair growth promoters, herbal products

Judul: Closed Knight’s Tour pada Papan Catur Berbentuk Persegi Panjang dengan Ukuran Maksimal 8 × 8
Abstrak: Closed Knight’s Tour merupakan langkah kuda yang mengunjungi setiap kotak pada papan catur tepat satu kali dengan langkah kuda berawal dan berakhir pada kotak yang sama. Graf yang terbentuk dari closed knight’s tour dinotasikan sebagai graf G(m,n), dengan m adalah banyaknya baris dan n adalah banyaknya kolom. Graf tersebut memuat Hamiltonian cycle. Sebuah graf terhubung G adalah graf bipartite jika dan hanya jika graf tersebut tidak memiliki cycle dengan panjang ganjil. Papan catur yang memenuhi syarat cukup untuk memiliki closed knight’s tour adalah papan catur berukuran 5 × 6, 5 × 8, 6 × 6, 6 × 7, 6 × 8, 7 × 8, dan 8 × 8.
Keyword: bipartite, closed knight’s tour, hamiltonian cycle, knight’s tour, teori graf