Judul: Transmisi Radiasi Surya dan Koefisien Pemadaman Tajuk Tanaman Kentang (Solanum tuberosum L.) di Galudra Cipanas – Jawa Barat
Abstrak: Potatoes are one of the important vegetable crops in Indonesia. In general, potato can grow in the tropics and subtropics. In an effort to develop this plant in Indonesia is necessary to study the environmental conditions suitable for the growth and development, in relation to climate variables. One of the important climatic variables is the solar radiation. The study was conducted in the Village of Galudra, Cipanas, West Java with the aim to find the proportion of radiation transmitted by the potato crop and canopy extinction coefficient. Transmission of radiation is the radiation energy that passes on the ground under the canopy while the canopy extinction coefficient is the rate of reduction of radiation by the plant canopy. Transmission of radiation is a function of LAI, where LAI higher LAI will result in reduced transmitted radiation. The canopy extinction coefficient and radiation interception (Qint) increased with LAI. This is because the ability of canopy to cover the soil surface decreases by which so much radiation escapes into the ground under the canopy.
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Judul: Efisiensi penggunaan radiasi surya pada tanaman kentang (Solanum tuberosum L.) varietas Granola di Galudra, Cianjur
Abstrak: The production of potatoes crop is influenced by solar radiation. Radiation use efficiency is a gradient of relationship between cumulative intercepted radiation and total dry matter. The aim of this experiment is to measure intercepted solar radiation and total dry matter to find out radiation use efficiency (RUE). An experiment was conducted in April-Juni 2010 at Galudra, Cianjur. The intercepted radiation was calculated by equation of Beer’s law, Qint = Qo (1-t), with t = 0,0393 e1,3718LAI and Qo = solar radiation measured at Stasiun Klimatologi Pacet. The result shows that the intercepted solar radiation by crop canopy increased with increased LAI, and therefore total crop dry matter. Radiation use efficiency of potato crop in Galudra was 1,55 gMJ-1 (above ground biomass), and 4,49 gMJ-1 (total biomass, including dry tuber).
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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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