Judul: Anatomical Properties and Demarcation Point of Bambang Lanang Wood Juveniles Area Due to Differences in Planting Distances
Abstrak: Bambang lanang telah dibudidayakan secara luas di Provinsi Sumatera Selatan sebagai kayu pertukangan. Penelitian ini bertujuan untuk menganalisis karakteristik anatomi dan batas pembentukan juvenil kayu bambang lanang yang ditanam pada jarak tanam yang berbeda. Bahan yang digunakan berupa tiga buah lempeng kayu setebal 2 cm dari pohon bambang lanang yang berasal dari Kawasan Hutan Dengan Tujuan Khusus di Sumatera Selatan. Pohon tersebut ditanam dengan jarak tanam 3 m x 3 m, 4 m x 2,5 m, dan 6 m x 3 m berumur 12 tahun. Karakteristik anatomi dianalisis secara makroskopis dan mikroskopis, sedangkan batas juvenil kayu ditentukan berdasarkan variasi radial dari tiga parameter, yaitu sudut mikrofibril, panjang serat, dan kerapatan. Hasil penelitian menunjukan bahwa perbedaan jarak tanam tidak berpengaruh terhadap karakteristik anatomi kayu bambang lanang. Secara umum ciri makroskopis kayu bambang lanang adalah kayu berwarna coklat kekuningan, tekstur kayu agak halus hingga halus, arah serat terpadu, permukaan kayu agak mengkilap, dan kesan raba agak kasar, sedangkan ciri mikroskopisnya adalah pori-pori tata baur, ada yang soliter, dan juga berganda 2-3 sel, serta tidak ditemukan tilosis. Sementara itu, perbedaan jarak tanam juga tidak memengaruhi batas area kayu juvenil, yaitu belum dapat diketahui batas juvenilnya., Bambang lanang wood has been widely cultivated in South Sumatra Province as carpentry wood. This study analyze the anatomical and boundary characteristics of bambang lanang wood juveniles planted at different planting distances. The materials used were three wooden disk from the bambang lanang trees from the Forest for Specific Purpose in South Sumatra with a thickness of 2 cm. The trees were planted at with spacing of 3 m x 3 m, 4 m x 2,5 m, and 6 m x 3 m 12 years old. Anatomical characteristics were analyzed for macroscopic and microscopic, at the same time the determination of wood juvenile boundary based on the radial variation of three parameters microfibril angle, fiber length, and wood density. The result showed that the difference in planting distances did not affect the anatomical characteristics of bambang lanang wood. In general, the macroscopic characteristic of bambang lanang wood are yellowish brown, wood texture is rather smooth to smooth, intergrated fiber direction, the wood surface is rather shiny, and the tactile sensation is rather rough, while the microscopic characteristics are mixed pores, some are solitary, and multiple radial with 2-3 cells and no tylosis is found. Meanwhile, difference in planting distances also did not affect the boundaries of juvenile wood areas, that is, the boundaries of juvenile could not be determined.
Keyword: fiber lenght, Magnolia champaca, microfibril angle, wood density

Judul: Penentuan Masa Transisi Kayu Juvenil ke Kayu Dewasa pada Bagian Tengah Batang Sengon (Falcataria moluccana (Miq.) B. Grimes) dan Jabon (Anthocephalus cadamba Miq.)
Abstrak: Sc. Wood is an important forest resources which has been processed in large quantities to meet growing human needs. To meet the increasing demand for wood, wood supplies are able to be taken from fast-growing species planted in plantations and community forests. These fast growing species tend to be harvested in short rotation and have a high proportion of juvenile wood. The objective of this research is to determine the characteristics of juvenile wood in order to use wood Jabon and Sengon properly. The approach of segmented regression model is used to describe the development of juvenile wood to mature wood while non-linear procedures at the level of two orthogonal polynomial equation is used to identify the starting point of the formation of mature wood. To determine the transition of juvenile to mature wood in Sengon and Jabon, samples of two trees with ages 5, 6 and 7 years are taken from the community forest in Sukabumi. Disk with a thickness of 5 cm is taken at a height of 3.5 meters from each sample tree for measuring fiber length, MFA, density and moisture content. Wood moisture content from pith to bark is measure by using gravimetric method. Fiber length and MFA are measured on each circle grows as wide as 1 cm from pith to bark by using maceration and microtome technique. That was an analysis of segmented regression model in radial to fibers and MFA, showing that Sengon and Jabon wood were young wood until the age of 7 years. Fiber length and MFA were the best indicator to determine the transition from juvenile to mature wood, although the transition point varied to their properties. The proportion of juvenile wood on Sengon and Jabon wood at the age of 7 years were respectively 80-100% and 100%.
Keyword: juvenile wood, Microfibril angle

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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