Judul: Stability Analysis of Dinamic Model Stray Cat Populations with Sterilization: Case Study IPB Dramaga Bogor Campus Supervised
Abstrak: Model yang dibahas merupakan dua model dinamika populasi kucing liar dengan sterilisasi yaitu pada model tanpa kedatangan kucing luar (populasi tertutup) dan model dengan kedatangan kucing luar (populasi terbuka). Model ini dirancang untuk mengontrol populasi kucing liar dengan cara program steriliasi di kampus IPB Dramaga Bogor. Langkah yang dilakukan adalah merekonstruksi model, menganalisis kestabilan titik tetap, melakukan simulasi numerik untuk mengkaji perubahan nilai parameter tertentu pada sistem. Model populasi tertutup dan model populasi terbuka memiliki tiga titik tetap dengan sifat kestabilannya bergantung pada nilai parameter. Dalam penelitian ini dibahas perubahan nilai parameter laju sterilisasi pada model populasi tertutup dan laju sterilisasi dengan laju imigrasi pada model populasi terbuka. Pada model populasi tertutup, populasi kucing liar dapat punah saat laju sterilisasi lebih besar dari laju pertumbuhan. Pada model populasi terbuka laju sterilisasi belum memberikan banyak dampak pengurangan kucing liar akibat adanya imigrasi kucing liar ke dalam lingkungan kampus.
Keyword: closed population, immigration rate, open populatin, stability, sterilization rate

Judul: Infestasi Pinjal dan Infeksi Dipylidium caninum pada Kucing Liar Di Kampus Institut Pertanian Bogor Dramaga
Abstrak: This study was conducted to investigate flea infestation and Dipylidium caninum infection on stray cat in Bogor Agricultural University Dramaga. The totals of 30 stray cats were collected from various places which found commonly in Bogor Agricultural University Dramaga. The stray cats were collected purposifelly which showed pruritus and alopecia. The whole body of cat powdered by gamexan powder, after that the fleas were collected by manual and examined microscopically. The D. caninum were examined from 30 fecal samples of stray cats used McMaster methode, flotation methode and observed by existence of proglotids. Fleas identification were conducted in Laboratory Entomology, while fecals were examined in Laboratory Helminthology, Faculty of Veterinary Medicine Bogor Agricultural University. The identification showed that was only one spesies of flea namely Ctenocephalides felis, while D. caninum were not found. Twenty one (70%) from thirty cats were infestated by the flea with density average of fleas per cat was 3.8±1.9.
Keyword: Ctenocephalides felis, Dipylidium caninum, Prevalence, Stray cat.

Judul: Kualitas Kayu Ampupu (Eucalyptus urophylla S. T.Blake) Berbagai Umur Tanam Sebagai Bahan Baku Pulp dan Kertas
Abstrak: Ampupu wood a fast growing species, has been a major raw material for pulp and paper production. Ampupu wood (Eucalyptus urophylla S. T. Blake) of 4, 5, 6, and 7 years old were determine the fiber dimension and chemical content of the wood. Pulp was then produced by Kraft pulping process. The operating conditions were active alkali of 17%, sulphidity of 30%, liquor/wood ratio of 4/1, maximum temperature of 1650C, and 3.5 hours total cooking time. The resulting pulp was then bleached by an ECF bleaching method following DEDD sequences. The result was determine fiber dimension and its derivative values, E. urophylla were classified into quality class of II for the raw material of pulp and paper. The age of wood influence chemical content but did not influence pulping yield and kappa number. It was found that the highest mechanical properties of pulp resulted from 6 years old E. urophylla. E. urophylla of 7 year old have stain on the sheets of pulp so it's poorly to used as raw material for pulp and paper
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