Judul: Pemetaan Kemiringan Lereng berbasis Data Elevasi dan Analisis Hubungan Antara Kemiringan Lereng dengan Bentuklahan.
Abstrak: Slope is part of a landform determined by various factors which derived from endogenic and exogenic geomorphic processes. Topographic map is one of the most frecuently used data for slope steepnes mapping. Elevation data from satellite record such as Shuttle Radar Topography Mission (SRTM) or others recently also used to build topographic data. The aim of this research are (1) slope steepnes mapping based on Indonesian Topographical Map (Rupa Bumi Indonesia or RBI) scale 1:25.000 and SRTM, and (2) landform mapping and analysis for landform and slope relationship. The Cileungsi Watershed was selected for research area since it has various landforms. Mapping method was done visually for printed RBI, whereas for digital RBI and SRTM data were done digitally using geographic information system software (ArcGIS). Stratified random sampling approach has been used for field work upon interpertated landform and slope analysis maps. The result show that the widest slope class in Cileungsi watershed was quite different for each method. By visual method mapping (printed RBI), the widest slope steepnes was B-class (32%), as for digital RBI was A-class (41%), and for SRTM data was C class (35%). To know where the similar slope steepnes classes having the same spatial location (overlap), the overlay processes have been done between 3 slope steepnes maps i.e. derived from printed-RBI, digital- RBI, and digital-SRTM. By these operations, it reveal that the average of overlap area were 38% for visual-RBI vs. digital-RBI, 50% for digital-SRTM vs. digital- RBI, and 59% for digital-SRTM vs. visual-RBI. Thus, the latter comparasion indicated the better one in common results. Geomorphologically, Cileungsi watershed composed by 17 types of landforms where the denudational-claystone hills, was the widest landforms in study area (18,18%). In relation to the slope steepnes, the morphography of plains were generally characterized by A and B slope steepnes classes; for the river valley, such as floodplain & terraces were characterized by A-class, but for the river valley of upper slopes (in hilly and mountainous areas) were characterized by C and D-classes. For hills morfography, the characterized of dominant slope varies from B to D-classes and so did for mountains morfography. However the typical characteristic of hilly or mountainous landforms were the heavier of incision the greater of slope steepnes class.
Keyword: Bogor Agricultural University (IPB), topographic map (RBI)., SRTM Indonesia, slope, landform, Cileungsi watershed

Judul: Hubungan Geomorfometri dengan Bentuklahan dan Penggunaan Lahan (Studi Kasus: DAS Cileungsi-Citeureup, Kabupaten Bogor).
Abstrak: The image interpretations for landform mapping are mostly carried out visually, since the landforms can’t be indentified solely from land cover spektral. To reduce the subjectivity of visual interpretation, the quantitative analysis of geomorfology (geomorphometry) is expected to facilitated for landform’s identification and delimitation objectively. TWI (Topographic Wetness Index) and TRI (Terrain Ruggedness Index) are some of geomorphometric analysis that can be attempted to that purpose, especially for erosional and depositional landforms. This study took place in the Cileungsi- Citeureup Watershed, Bogor Regency, and aims to: (1) determine the type and distribution of landform in the study area, assess the value of TWI and TRI, and understand the relationship between landforms to TWI and TRI; (2) determine the type and distribution of land cover/land use and to understand the relationship between land cover/land use to TWI and TRI. The method for landforms and land use mapping is visual interpretation and on-screen digitization respectively on Shuttle Radar Topography Mission (SRTM) hillshade (30m resolution) and IKONOS imageries. The TWI and TRI were assessed from SRTM’s digital elevation models (DEMs) using SAGA and ArcGIS softwares. The result shows that the landforms of study area can be divided into 24 types, and based on the morphography and morphogenesis the dominant landforms are denudational hills. The relationship between landforms and TWI is illustrated by the distribution of TWI’s dry class on mountainous areas, the moderate class covers almost all of landforms, and the moderately to wet classes covers the valley and plain landforms. As for the relationship to TRI, it is illustrated by the dominant distribution of TRI’s rough class on the mountainous landforms, the moderate class on the hillslopes, and the smooth class on the plains landforms. According to the land use interpretation and classification, it can be divided into 5 type where the mixed gardens and dry field crops are the most widely types, respectively 45.31 km2 (25.70%) and 42.08 km2 (23.86%) of study area and covering the hilly areas. In relation to TWI and TRI, the mixed gardens and dry field crops spread out dominantly in the moderately dry TWI areas and in the moderately smooth TRI areas.
Keyword: geomorphometry, TRI, TWI, landforms, land cover/land use, Cileungsi-Citeureup Watershed, Bogor

Judul: Pengaruh vaksin aktif dan inaktif terhadap kekebalan dalam pencegahan penyakit newcastle pada ayam
Abstrak: Penyakit Newcastle adalah penyakit yang bersifat infeksius dan kontagius yang menyerang unggas terutama ayam dan kalkun; menimbulkan kematian, penurunan produksi dan kwalitas telur sehingga menimbulkan kerugian ekonomi yang besar; disebabkan oleh paramyxovirus yang termasuk ke dalam golongan virus yang berinti asam ribonukleat. Virus penyebab penyakit ini terdiri atas beberapa galur yaitu velogenik, mesogenik dan lentogenik. Vaksinasi adalah salah satu cara untuk mencegah timbulnya penyakit dan kerugian yang ditimbulkannya. Vaksin terdiri atas vaksin aktif dan inaktif atau vaksin dalam emulsi minyak. Vaksinasi pada umur dini adalah cara yang paling baik dilakukan. Umur ayam yang tepat mulai dilaksanakan vaksinasi adalah pada umur 4 hari, karena pada saat ini titerantibodi asal induk sudah mulai turun dan kondisi ayam sudah mulai kuat untuk dilakukan vaksinasi jika melakukannya pada ayam umur sehari. ...
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