Judul: Tingkat Kenyamanan Kampus IPB Baranangsiang Berdasarkan Informasi WBGT (Wet Bulb Globe Temperature).
Abstrak: The measurement of wet bulb temperature (Twb), dry bulb temperature (Tdb), and black globe temperature (Tbg) are used to assess the comfort index of human outdoor and indoor at IPB Baranangsiang campus based on Wet Bulb Globe Temperature (WBGT) index. WBGT is a temperature composision to estimate the effect of air temperature, relative humidity, and solar radiation to human comfort. If Tbg data not available, Tbg can be predict by air temperature, relative humidity, and solar radiation. They explain the variability of Tbg data is 98,84% for outdoor and for indoor, without radiation explained, the variability is 98,65%. The average range of WBGT indoor and outdoor such as Botani, Fisika, Bsp01, Bsp02 class room and garden colection for morning are 24,3-24,8ºC, after noon are 28,2-31ºC, and evening are 26-27ºC. The relationship between WBGT with comfort index indicates is respondence feel comfortable when the value of WBGT is low and not comfortable when the value of WBGT is high. The results of this study show that the WBGT value is higher than WBGT standart in temperate region (subtropic)
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Judul: Dampak Perubahan Tutupan Lahan Terhadap Temperature Humidity Index (THI) Kawasan Kampus IPB Dramaga
Abstrak: The existence of IPB (Bogor Agricultural University) Dramaga campus doesn’t only give a possitive impact on economy aspect of the surrounding communities, but also give negative impact on the environment. One of which is the land cover change that cause reduction green open space. The presence of green open space can affect human comfort condition. The objective of this research is to determine the impact of land cover changes on air temperature and Temperature Humidity Index (THI) of IPB Dramaga campus area. THI is a method to determine the comfort index, which combines the air temperature and relative humidity. Air temperature are derived from Landsat using energy balance method. Land cover are classified using unsupervised method. Average air temperature in 1994, 1997, 2006 and 2009 respectively are 24.7°C, 26.9°C, 27.4°C and 27.7°C, while the THI values are 24.1oC, 25.8oC, 25.8oC and 26.4oC. Urban green space in the years above respectively are 80%, 74.4%, 52% and 36.4%. It shows that the reduced of green open space affects the temperature increase and the value of THI IPB Dramaga campus area is at a critical point of comfort
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Judul: Sintesis 1-Kloro-2-metoksi-6-propilnaftalena-1,3-dioksolana (1:1) sebagai Prekursor Asam (S)-(+)-(6-Metoksi-2-naftil)propanoat
Abstrak: Senyawa 1-kloro-2-metoksi-6-propilnaftalena-1,3-dioksolana (1:1) sebagai prekursor asam (S)-(+)-(6-metoksi-2-naftil)propanoat disintesis dari bahan awal 2-metoksinaftalena. Tahapan sintesis diawali dengan klorinasi menggunakan 2 jenis pereaksi klorinasi, yakni isosianurat terklorinasi dan NaOCl. Klorinasi dengan isosianurat terklorinasi berhasil menyintesis 1-kloro-2-metoksinaftalena sebagai produk monoklorinasi melalui pencirian dengan kromatograf gas-spektrometer massa (GC-MS). Nisbah konversi produk paling efisien diperoleh pada laju penambahan 2.5 mmol/jam. Sebaliknya, klorinasi dengan NaOCl menghasilkan produk triklorinasi. 1-Kloro-2-metoksinaftalena selanjutnya diasilasi dengan propanoil klorida, tetapi analisis dengan GC menunjukkan bahwa produk asilasi tidak terbentuk. Sistem bebas-air diperlukan untuk keberhasilan proses asilasi tersebut.
Keyword: isosianurat terklorinasi, NaOCl, nisbah konversi