Judul: Pengaruh Aromaterapi Minyak Atsiri Jahe Terhadap Kadar Trigliserida dan Kolesterol Darah Tikus yang Diberi Pakan Tinggi Lemak
Abstrak: The study aims to determine the effect of ginger (Zingiber officinale) essential oil via inhalation on blood triglyceride, total cholesterol, High Density Lipoprotein (HDL) cholesterol, and Low Density Lipoprotein (LDL) cholesterol level of rats that fed high fat diet. Eighteen albino rats (Rattus norvegicus) were devided into three treatments groups. The treatments were K1 (standard diet) as negative control, K2 (high fat diet) as positive control, and K3 (high fat diet + ginger essential oil inhalation). Blood samples were collected after 5 weeks of treatment period. The result showed the level of triglyceride, cholesterol, and HDL cholesterol at treatment K3 tend to be lower than treatment K2. LDL cholesterol level at treatment K3 show higher result than treatment K2. From the result of this study cocluded that inhalation of ginger essential oil can lowering triglyceride, total cholesterol, and LDL cholesterol level and raise HDL cholesterol level.
Keyword: 

Judul: Fraksionasi senyawa aktif minyak atsiri jahe sebagai pelangsing aromaterapi secara in vivo
Abstrak: Ginger is an Indonesian aromatic plant containing essential oil. The objectives of this research were to separate constituents of ginger essential oil and to evaluate the active components as aromatherapy for obesity using in vivo analysis. The essential oil was collected by steam distillation method as much as 1.57% (w/v) from ginger rhizomes. Fractionation of the essential oil was performed by silica gel column chromatography (gradient elution) resulting 11 fractions. Fraction 2, fraction 4, and ginger essential oil were analyzed for their activities as aromatherapy for antiobesity in vivo by using male Sprague-Dawley rats. Inhalation of fraction 2, fraction 4, and ginger essential oil showed lower response of rats body weight compared with the positive control (high cholesterol feed). From the three groups of rats, the essential oil inhalation group gave the lowest response for body weight increment, that is 6.17% (w/w). Based on gas chromatograpy-mass spectrometry analysis, the main component in ginger essential oil which affected the body weight of rats was camphene
Keyword: 

Judul: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
Keyword: