Judul: Analisis Kenyamanan Termal dengan Metoda Computational Fluid Dynamics pada Ruang Kuliah Fateta, Institut Pertanian Bogor
Abstrak: Kenyamanan termal merupakan suatu kondisi yang sangat penting untuk menunjang fungsi dari segala akvitas di dalam ruang. Faktor-faktor yang berpengaruh terhadap kenyamanan termal antara lain: suhu, kelembaban, dan aliran udara. Pada penelitian ini dilakukan pengukuran kondisi kenyamanan pada RK.V 03.1, FATETA, IPB dengan menggunakan metoda computational fluid dynamics (CFD) dan menganalisis nilai overall thermal transfer value (OTTV). Hasil perhitungan OTTV pada RK.V 03.1 sebesar 31,81 W/m2 yang berarti sudah sesuai dengan SNI 03-6389-2000. Hasil simulasi kenyamanan termal pukul 14:00 pada ruang RK.V 3.01 menunjukkan suhu udara 33,39°C, kelembaban 58,71%, dan kecepatan aliran udara sebesar 0,14 m/detik pada titik 4. Ruangan ini menurut SNI 6390:2011 dikatakan tidak nyaman. Setelah dilakukan modifikasi pada ventilasi atap bangunan maka suhu udara di titik 4 mengalami penurunan sebesar 0,78°C sedangkan kelembaban mengalami peningkatan sebanyak 0,48%, dan kecepatan aliran udara 0,16 m/ detik.
Keyword: kenyamanan termal, overall thermal transfer value, ruang kuliah, simulasi, ventilasi atap

Judul: Analisis Kenyamanan Thermal Ruang Kelas B1 FEM IPB Menggunakan Teknik Simulasi Berdasarkan Computational Fluid Dynamics
Abstrak: Classrooms contstruction have to consider about thermal comfort, so that learning activities can be done effectively. The thermal comfort can be achieved by saving our nature with minimizing energy consumption and environment damage. This research is analyze thermal comfort of B1 Classroom FEM IPB which now used an outdoor concrete roof. The research objective is to determine the climate of B1 classroom using simulation technique. The simulation is done to determine and compare the dynamics of airflow pattern, temperature, and humudity of concrete and plant yard. The simulation was conducted based on Computational Fluid Dynamics method. The result shows that plants yard is can decrease temperature and increase the comfortable in B1 classroom than existing condition. The compare of thermal comfort condition in existing, concrete and plant outdoor yard are 28.5oC, 28.3oC, dan 26oC. The airflow rate in B1 classroom with plants yard is 0.237 m3/min/person and it reach a suitable condition based on SNI 03-6572-2001.
Keyword: concrete yard, plant yard, shades, simulation, thermal comfort

Judul: Lejeuneaceae Subfamily Ptychanthoideae (Hepaticae) in  West Java
Abstrak: Subfamily Ptychanthoideae of the family Lejeuneaceae (Hepaticae) in West Java is still poorly known. Publications on this subfamily are out of dated and written in the 19th or early of 20th century. The last taxonomic treatment of Ptychanthoideae of West Java was in 1933, many species names have changed since then. Studies on Ptychanthoideae of West Java are urgently needed. Studies on the Ptychanthoideae were based on the specimens collected from West Java. A total number of 361 of specimens deposited in the Herbarium Bogoriense (BO), Herbarium Biotrop (BIOT), Gottingen Herbarium (GOET) and Bangi Herbarium (UKMB) were examined, those are old and several recent specimens collected in West Java. Recent collections were made from Telaga Warna, Ciater, Gunung Halimun Salak National Park, Cibodas Botanical Garden, Bodogol Education Center and Conservation (Gunung Gede Pangrango National Park), University of Indonesia Campus Depok, including several collections from Banten Province. Twenty four species of Lejeuneaceae subfamily Ptychanthoideae are known from West Java, belonging to 8 genera namely Acrolejeunea (Spruce) Schiffn. (2 species), Archilejeunea (Spruce) Schiffn. (1 species), Lopholejeunea (Spruce) Schiffn. (10 species), Mastigolejeunea (Spruce) Schiffn. (3 species), Ptychanthus Nees (1 species), Schiffneriolejeunea Verd. (1 species), Spruceanthus Verd. (2 species) and Thysananthus Lindenb. (4 species). Two new records of Ptychanthoideae: Mastigolejeunea indica Steph. and Thysananthus minor Verdoorn are reported for Java. A determination key to the species is presented including their descriptions and illustrations.
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