Judul: Pola Sebaran Jenis Keruing (Dipterocarpus spp.) di Areal Konsesi Hutan PT. Salaki Summa Sejahtera, Pulau Siberut, Sumatera Barat
Abstrak: Keruing (Dipterocarpus elongatus, Dipterocarpus retusus, and Dipterocarpus hasseltii) are categorized as commercial timber which has endangered status according to the IUCN. Keruing has been utilized by PT. Salaki Summa Sejahtera. Sustainability of Keruing can be indicate by the distribution pattern and it factors. The purpose of this study is to identify Keruing’s (Dipterocarpus spp.) distribution pattern, community similarity between primary forest and various former condition of logged over areas, the association and disassociation between Keruing and the other dominant species. Data was collected from tree stands that represent the condition of primary forest and various logged over areas (1 year, 4 year and 20 year). Lines plot with 20 m x 500 m, identifying tree species and measuring tree which has diameter for more than 10 cm was made for each condition of tree stands. Distribution pattern of D. elongatus and D. hasseltii is same. Distribution pattern of D. retusus can not be analyzed because it’s found only one tree. Species of D. hasseltii associate with H. merrillianus, H. woodii and H. grandiflorum. Species of D. elongates associate with H. woodii and S. ovalis.
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Judul: Persamaan Alometrik Biomassa Pohon Keruing di Pulau Siberut, Sumatera Barat
Abstrak: This research aims to develop an allometric equation biomass of keruing tree (Dipterocarpus sp) which is the commercial and dominant species in forest concessions area, Siberut Island, West Sumatera. The allometric equation is indispensable to estimate tree biomass in forest carbon stock inventory. As many as 30 keruing trees on various size of diameter cutdown for drafting purpose of the allometric equation of keruing tree. The best allometric equation to estimate above ground biomass of keruing tree is the equation using two variables such as diameter and high of free branch is B_Tot = 152 - 4.88Dbh + 0.0425Dbh2Hbc. But, for practically purposes, the B_Tot = exp (-1.75 + 2.43LnDbh) equation which uses only diameter variable is enough to estimate the keruing tree biomass. The allometric equation can be used to estimate biomass of keruing tree with a range of diameter 10-143 cm.
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Judul: Infeksi Virus Parainfluenza Pada Anjing
Abstrak: Virus parainfluenza anjing termasuk famili Paramyxoviridae, berbentuk pleomorf dengan ukuran bervariasi (bergaris tengah antara 100-500 nm), berpembungkus peka ether, berisi genom RNA dan secara serologis mempunyai kesamaan dengan virus SV-5 kera; dikenak sebagai salah satu kausa penting dari sindrom "kennel cough". Infeksinya dapat mengenai anjing semua umur yang belum pernah terinfeksi atau mendapatkan vaksinasi mengakibatkan gejala klinis ringan yang terbatas pada traktus respirasi atu infeksi yang secara klinis tidak memperlihatkan gejala nyata. Gejala klinis yang nampak setelah masa inkubasi (1-5 hari) terlewati berupa batuk yang tidak berat selama beberapa hari, berbagai tingkat tonsilitis dan pharyngitis dan kadang-kadang ditemukan kenaikan temperatur rektal antara 1-2 derajat C dari temperatur normal rat-rata. Anjing terinfeksi mengandung virus pada traktus respirasi bagian atas dan bawah serta limfonoduli sampai hari ke 9 setelah infeksi. Penyebaran virus antar anjing terjadi secara aerogen.
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