Judul: Perbandingan Sifat Fisik Tanah  Lintasan Sepeda Gunung Dan Tanah Hutan  Di Hutan Pendidikan Gunung Walat,  Kabupaten Sukabumi, Provinsi Jawa Barat
Abstrak: Mountain bike track as along as 7.2 km was developed in Gunung Walat University Forest (GWUF) It was a part of development stragies of GWUF through sport-eco-tourism. Contruction and intensive utilization of mountain bike track in GWUF possibly cause changes in soil physical properties due to soil compaction, and increase the rate and amount of surface run-off and erosion. The objectives of this research are to analyze the physical properties of mountain bike track and forest soils, and to know the rate and amount surface run-off and erosion on mountain bike track in GWUF. Data collection and analysis were conducted from October 2010 until March 2011. The collected data consists of mountain bike tracks location, length, wide, area and slope steepness, types of land cover, soil physical properties, rainfall, surface run-off amount and rate, and sediment load. The location, length, wide, area, and slope steepness of mountain bike track were analyzed from mountain bike track mapping, overlaying with contour, land cover types, and soil types maps of GWUF using Geographic Information System software. Soil physical properties were analyzed through analysis of soil samples in the laboratory, except for the soil compactness was measured directly in the field using penetrometer. Soil samples were taken using the ring samples from mountain track bike track as well as forest soil at difference slope steepness, namely 8—15%, 15—25%, 25—40%, and >40%. Daily rainfall were measured using an automatic rain gauge. Amount of surface run-off and sediment loads were measured using erosion plot size of 1 m x 0.6 m. Rainfall, surface run-off and sediment load data are collected every day, during 30 days of rain events. The results of this research showed that the physical properties of soils of mountain bike track and forest were not different significantly. Surface run-off and erosion on mountain bike track were in the level of ”very low” hazard class. It means the rate of erosion was in the threshold of safe criteria. The highest surface run-off and erosion occures on the slope of 15-25%, those are 143.228,88 m³/ha/year and 206,74 ton/ha/year, respectively. Surface run-off and erosion are 187.424,42 m³/ha/year and 302,59 302,59 ton/ha/
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Judul: Indeks dan Tingkat Bahaya Erosi Kawasan Hutan Pendidikan Gunung Walat, Kabupaten Sukabumi
Abstrak: Gunung Walat Education Forest (GWEF) is dominated by forest (Google Earth Image 2010). The river flowing within GWEF show less sediment load when the rainy days, that indicate the actual erosion of GWEF land is low. However, the physical conditions (soil and land morphology) of GWEF are dominated by the physical characteritics of land that potentially high erosion. Mapping of potential and actual erosion hazard in the region of GWEF are necessary and important for land use planning to reduce the negative impacts of land management of GWEF. The actual erosion is predicted by using indexes of USLE, i.e rainfall erosivity, soil erodibility, length and slope, land cover, and soil conservation measures indexes. Potential erosion is predicted also by using those indexes except the indexes of land cover and soil conservation measure. The results show that GWEF area is dominated by the very high potential erosion hazard index (92 %). The highest potential erosion is about 482,170.7 tons/ha/year (40,180.9 mm/year) and total potential erosion is 13,195,922 tons/year. Nevertheless, the actual erosion in GWEF area is mostly very low (59 %). The highest actual erosion is about 2,147.1 tons/ha/year (178.9 mm/year) and the total actual erosion is about 39,643 tons/year. Sediment Delivery Ratio in HPGW of sub watersheds is less than 0.2. Potential erosion in most areas of GWEF is very high, that indicate the most areas of GWEF is sensitive to erosion, but actual erosion of GWEF mostly is low. This phenomena is caused the area of GWEF is dominated by dense forest and forest floor. In the bare land, the actual erosion is very high. Based on these results, forested land should be maintained, especially in areas where potential erosion hazard index high until very high. In the areas where potential erosion hazard index is low – medium, forest land cover change is possible with consider the soil conservation measures.
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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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