Judul: Studi infestasi ektoparasit pada anjing di Pondok Pengayom Satwa Jakarta^cGrady Priasdhika
Abstrak: Dog is the most common pet animal reared by humans. The problem that often found is the presence of ectoparasites such as ticks, fleas, mites, and louse. This study aim to determine the prevalence ectoparasite infestations in dogs at Pondok Pengayom Satwa Jakarta (PPSJ) from 2009 to 2013. The medical record data grouped based on sex, breed, and age. The result showed that there were 538 from 3 478 dogs that come at PPSJ infested by ectoparasites (15.47%). Types of ectoparasites recorded from 2012 to 2013 were ticks (41.96%), louse (23.94%), fleas (21.48%), and mites (12.63%). The infestation of ectoparasites found more in the male dog (16.55%) than the female dog (14.15%). In addition, pure breed dog (17.87%) had the highest prevalence of ectoparasites followed by mixed (13.27%), and local breed (12.43%). The dog which above 1 year old (17.21%) was more infested than the dog which 1 year old or less (13.59%). The result of Chi-square test (p<0.01) showed there were significant different between sex, breed, and age with the ectoparasites infestations in dogs.
Keyword: Bogor Agricultural University (IPB), sex, prevalence, infestation, ectoparasite, dogs, breed, age

Judul: Sebaran Infestasi Ektoparasit Pada Anjing di Bandung
Abstrak: Anjing merupakan hewan kesayangan yang paling diminati selain kucing, anjing juga merupakan sahabat dan teman bermain, selain itu dimanfaatkan untuk berburu dan penjaga rumah yang handal. Infestasi ektoparasit pada anjing dapat mengganggu kesehatan anjing dan pemiliknya. Penelitian ini bertujuan untuk mempelajari sebaran infestasi ektoparasit pada anjing di kota Bandung. Pengamatan dilakukan berdasarkan data rekam medik dari tahun 2008 sampai 2014 dari 7 Klinik Hewan yang terdapat di Bandung. Hasil penelitian menunjukkan bahwa Prevalensi infestasi ektoparasit sebesar (0.91%) dari 70800 ekor anjing yang datang ke klinik. Ragam jenis ektoparasit yang umum menyerang anjing adalah caplak Rhipicephalus sanguineus (19.9%), kutu Frichodectes canis (74.6%), dan pinjal Ctenocephalides felis (5.5%). Infestasi ektoparasit lebih banyak ditemukan pada anjing jantan (60.24%) daripada anjing Betina (39.4%). Anjing dengan ras murni memiliki sebaran tertinggi yaitu 65.46%) diikuti oleh anjing ras campuran (23.09%) dan anjing lokal (11.45%). Berdasarkan umur, anjing berumur di atas 1 tahun lebih sedikit terserang @ktoparasit (20.48%) daripada anjing berumur di bawah 1 tahun (41.57%) dan sisanya (39.7%) tidak terdata. Hasil uji Chi-square (p>0.01) menunjukkan tidak adanya hubungan yang signifikan antara jenis kelamin, jenis anjing, dan umur dengan infestasi ektoparasit pada anjing di Bandung dengan P-value jantan 0.319 Ban P-value betina 0.982…
Keyword: Dog, Ectoparasites, Infestation, Pure Breed, Mix Breed, Local Breed, Ectoparasite distribution, Medical records, Lice, Trichodectes canis, Flea, Chi square test, Sex, Breed

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.
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