Judul: Komposisi Jenis dan Struktur Tegakan di Hutan Penelitian Haurbentes Jasinga, Kabupaten Bogor
Abstrak: The Haurbentes Special Purpose Forest Area which functioned as a reaserch forest has various types of stands. This study was purposed to obtain informations on the species composition and stand structure in Harbuentes Research Forest. Unit samples taken by using purposing sampling method on 20 ha Haurbentes forest area. Observed variables in this study are number of vegetation individuals for seedlings and saplings, also diameter and number of individuals vegetation level from trees which diameter greater than 10 cm in 10 m x 50 m pots with seedlings, saplings and tree measuring on each type. Estimation of forest stands potential calculated with Dipterocarpaceae volume estimation and Berkhout linier transformation equation. Based on the observation, biodiversity index forest (H') in Haurbentes Research Forest for all levels of growth were categorized as moderate classification since it had biodiversity index forest values between 1,5 to 3,5. The species richness for seedling and trees growth rate were categorized as low classification and the sapling growth rate were categorized as high classification. The highest number of plants was founded in sapling growth rate and the lowest number of plants was founded in seedling and trees growth rate, with the value of 20 species of seedling, 51 species of saplings and 15 species of trees. Species of Shorea mecistopteryx was the dominant species at every stages of growth because these species are found in large numbers and spread almost evenly throughout the area. The stand structure of Haurbentes Forest was characterized as the larger the size of the diameter of the rod the more reduced the number of individuals of the species (the inverted "J" letter curve graphic). Based on 2012 tree treatise at the Haurbentes research forest in the area of 20 ha were found 2987 trees. Total of Dipterocarpaceae wood volume potential obtained in Haurbentes research forest is 592,77 m3 or 29,64 m3/ha.
Keyword: stand structure, species composition

Judul: Struktur dan Potensi Tegakan Hutan Tanaman Meranti (Shorea spp.) di KHDTK Haurbentes Kabupaten Bogor
Abstrak: Structure and potency of forest stand meranti (Shorea spp.) in Forest Area with a Specific Purpose (FASP) Haurbentes is very interesting to be studied. FASP Haurbentes is a plantation forest area that built in 1940-1986. Variety compositions and vegetation covers of FASP Haurbentes are similar to the natural forest condition. Important Value Index (IVI) are used to measure the forest stand structure. IVI can be used to determine the compositions of vegetation type in various stage of growth level on the observation plots. Furthermore, forest stand potency needs to be estimated through volume estimation testing models that is already made. Research method use a line plots method. In the observation plots, forest stands structure in FASP Haurbentes forms an inverted J curve. Varieties that have the highest IVI in seedlings, saplings, poles and trees stage respectively are Shorea pinanga (47.1%), Shorea pinanga (80.1%), Shorea mecisopteryx (90.9%), and Shorea selenica (87.3%). Meranti Stands potency in FASP Haurbentes is in the amount of 434.66- 551.94 m3/ha. Meranti volume estimation model in FASP Haurbentes is V = 0.000234423 Dbh2.37.
Keyword: Bogor Agricultural University (IPB), volume equation, structure, potential, meranti

Judul: Leukemia pada kucing
Abstrak: Leukemia pada kucing adalah suatu penyakit yang sangat patogen, disebabkan oleh sejenis virus. Virus ini dikenal sebagai Feline Leukemia Virus atau FeLV. FeLV ini oleh beberapa ahli dikatakan hanya bersifat ganas pada hewan kucing. Penularannya bisa secara horizontal maupun congenital. Kucing pada semua tingkat umur dapat terserang oleh FeLV ini. Khusus pada bentuk "thymic leukemia", virus ini hanya menyerang anak-anak kucing berumur diba- wah 1 tahun. Kucing-kucing liar atau yang tidak terpeli- hara jarang sekali terinfeksi FeLV. Selain dari serangan virus FeLV itu sendiri, maka penyakit leukemia ini bisa disebabkan oleh beberapa fak- tor yang sudah ada dalam tubuh hewan dan sangat menunjang perkembangan penyakit ini, yaitu antara lain tumor, agen toksik, cedera oleh kecelakaan dan gangguan hemopoiesis. FeLV menyerang sel-sel darah dalam tubuh hewan se- hingga pembentukan darah berjalan tidak normal. Terlihat sel-sel darah yang belum dewasa sudah beredar dalam sir- kulasi darah. Bentuk dan jumlahnya tidak lagi seimbang dalam tubuh hewan kucing tersebut. Gejala klinis antara lain kekurusan, ikterus, anemia, lemah, anoreksia, dyspnoe, sulit menelan, batuk, dan membran mukosa pucat. Selain itu kelenjar pertahanan tubuh juga membengkak, kemudian terjadi hepatomegali, spleenomegali dan pembengkakan pada ginjal. Terbentuk massa tumor pada beberapa tempat. Secara biopsy pada sumsum tulang akan terlihat be- berapa perubahan. Sumsum tulang berwarna merah tua atau abu-abu. Konsistensinya lunak dan terdapat banyak sekali memproduksi sel darah putih. Melalui gambaran darah leukemia ini lebih mudah didiagnosa. Jumlah retikulosit rendah sekali. PCV 8-15%, hemoglobin menurun, sel darah putih (WBC) meningkat, lim- fosit meningkat, Alfaglobulin juga ada peningkatan, dan banyak eosinofil yang belum dewasa beredar dalam darah…dst
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