Judul: Gambaran Imunohistokimia Antioksidan Superoksida Dismutase pada Jaringan Hati Tikus Diabetes Mellitus yang diberi Virgin Coconut Oil (VCO).
Abstrak: Virgin coconut oil atau minyak kelapa murni saat ini umum digunakan antara lain untuk pengobatan beberapa penyakit. Secara empiris dilaporkan, minyak kelapa murni bermanfaat dalam menurunkan kadar glukosa darah. Penelitian ini bertujuan untuk melihat pengaruh pemberian minyak kelapa murni/VCO terhadap profil antioksidan intraseluler copper,zinc-superoxide dismutase (Cu, Zn-SOD) pada jaringan hati tikus diabetes mellitus. Kondisi diabetes mellitus didapat dengan cara induksi alloxan yang dapat merusak sel β Pulau Langerhans. Sebanyak 25 ekor tikus jantan galur Sprague dawley dikelompokkan menjadi 5 kelompok, yaitu (1) kelompok kontrol negatif (K-), (2) kelompok kontrol positif/diabetes (K+), (3) kelompok diabetes dengan pemberian VCO A (VA), (4) kelompok diabetes dengan pemberian VCO B (VB), (5) kelompok diabetes dengan pemberian minyak goreng (MG). Dosis aquadest, VCO, dan minyak goreng yang diberikan 5ml/ekor/hari selama 28 hari. Jaringan hati diambil di akhir perlakuan lalu diproses dengan metode embedding paraffin. Potongan jaringan hati diwarnai dengan Hematoxylin Eosin (HE) dan imunohistokimia terhadap Cu,Zn-SOD. Pemberian VCO menunjukkan gambaran morfologi hati yang lebih baik dibandingkan dengan kelompok kontrol positif dan kelompok minyak goreng. Pemberian VCO dapat meningkatkan kandungan Cu,Zn-SOD pada jaringan hati tikus diabetes mellitus dibandingkan dengan kelompok kontrol positif dan minyak goreng. Pemberian VCO A menunjukkan profil antioksidan Cu,Zn-SOD yang lebih baik dibandingkan kelompok perlakuan VCO B.
Keyword: 

Judul: The effect of virgin coconut oil (VCO) on the profile of immunohistochemical antioxidant superoxide dismutase (SOD) in the kidney of diabetes mellitus rat.
Abstrak: The aim of this research is to evaluate the effect of virgin coconut oil (VCO) on the profile of copper zinc-superoxide dismutase (Cu,Zn-SOD) in the kidney tissue of rats. A total of 25 male white rats (Rattus novergicus), Sprague Dawley were used for this study. They were divided into 5 groups ; (1) negative control group (K-), (2) positive control/diabetic rats group which was orally treated with aquadest (K+), (3) diabetic rats treated with VCO A (VA), (4) diabetic rats treated with VCO B (VB), (5) diabetic rats treated with coconut oil (MG). Diabetic condition was achieved by alloxan injection (IP, 110 mg/kgBW). The dose of aquadest, VCO, and coconut oil was 5ml/rat/day. The treatment were done for 28 days. The kidney were obtained at the end of treatment and then processed using paraffin embedding standard methods. The tissue were then stained with Hematoxillin-Eosin and immunohistochemical technique for Cu,Zn-SOD. The kidney tissues of diabetic rats group treated with VCO showed better morphological feature and higher content of Cu,Zn-SOD compared to that of diabetic rats group treated with aquades only or coconut oil. The treatment of VCO A gave better effect on the profile of antioxidant Cu,Zn-SOD compared to VCO B. Key words : Virgin coconut oil, diabetes mellitus, superoxide dismutase (SOD), kidney, rat
Keyword: 

Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
Keyword: