Judul: Analysis of landslide hazard and risk in the upstream of Ciliwung Watershed and its relationship with spatial planning
Abstrak: The upstream of Ciliwung watershed geomorphology was characterized by hills and mountains relief which were formed by volcanic processes. The steep slopes dominating the region and the high rate of human activities reflected by the dynamic land use change had turned the upstream of Ciliwung watershed region into landslide hazard area. Some landslide cases continue to occur in the rainy season every year, causing a lot of losses. This indicates that the mitigation of landslide hazard and risk by the government has not optimal yet. This study aims: (1) to analyze and map the landslide hazard in the upstream of Ciliwung watershed based on several estimation models, (2) to analyze and map the landslide risk area based on the level of landslide hazard, the society vulnerability, and the region capacity in the upstream of Ciliwung watershed, (3) to analyze the consistency of land use with spatial planning map, (4) to formulate the spatial plan/spatial arrangement guidance as an attempt to minimize the landslide disaster. The methods used in this study were spatial analysis, attribute analysis and descriptive analysis. Spatial and attribute analysis were conducted by utilizing geographic information systems (GIS) with the score and weight for each parameter, which is further classified into five classes, namely very low, low, moderate, high, and very high class. The higher the score and the weight, the higher the impact of the landslide cases, and vice versa. Spatial and attribute analysis included the mapping of landslide hazard, the mapping of vulnerability, the mapping of capacity, the mapping of landslide risk and the mapping of land use consistency. Descriptive analysis was performed to determine the relationship between spatial arrangement and landslide hazard, consistency level and landslide risk. The results of the study showed that the upstream of Ciliwung watershed has: (1) quite varied classes of landslide hazard, ranging from low to very high class, with the largest percentage is at the moderate class (54.89%); (2) very varied classes of society vulnerability, ranging from very low to very high class, dominated by the moderate class (53.25%); (3) high and very high region capacity classes; (4) the landslide risk classes which are spread almost evenly in very low class (39.75%), low class (32.02%), and moderate class (27.16%); (5) the land use of spatial plan is still at moderate to very high class of landslide risk and hazard; (6) the level of land use consistency toward spatial plan is still low (69.22%).
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Judul: Pemetaan Kawasan Rawan Bencana dan Analisis Resiko Bencana Tanah Longsor dengan Sistem Informasi Geografis (SIG) (Studi Kasus Kawasan Kaki Gunung Ciremai, Kabupaten Majalengka)
Abstrak: Landslide disaster is one of the natural disasters that often occur in Indonesia and is generally common in mountainous regions, the rainy season and is closely related to natural conditions such as soil type, rock type, rainfall, land slope and land cover. The aim of this study is to mapping hazard landslide areas and to analyze the risk of landslides in the Ciremai foothills region Majalengka district. Puslittanak (2004) is using to be a model of analyzing landslide susceptibility prediction in study area, the formula is Total Score = 0,3 FRain Falls +0,2 FGeology +0,2 FLand Slope +0,2 FLand Cover +0,1 FSoil Types. Risk analysis was analyzed by quantitative models based on research of Alhasanah (2006) through the overlaying property map score (infrastructure map, road map and land cover) with landslide vulnerability map. In study area, low landslide susceptibility class dominated by flat topography, the dominant rock type is Qa (Aluvium), soil type is Latosol and rainfall intensity 2500-3000 mm/year. Medium landslide susceptibility occur in flat to a relatively steep slope with the type soil dominated by Andosol and level of rainfall intensity is 2500-3000 mm/year. At high landslide susceptibility, dominated land cover is forest with steep topography (15-30%), rock type is dominated by Qvu and the soil type is Andosol with rainfall 3000-3500 mm / year. Very high vulnerability to landslides mostly located in forest areas with very steep slope (>45%), high rainfall intensity 3000-3500 mm/year and dominated by Qyu rock type and Andosol soil type. Based on the analysis of vulnerability map, in area study obtained low vulnerability covered area 2160,45 hectares, medium vulnerability with covered 15319,71 hectares, 21992,49 hectares of high landslide vulnerability and very high vulnerability covered 6191, 91 hectares. Very high vulnerability mostly located in Argapura with 2811,78 hectares (45,41%). Based on the analysis of risk maps, the area of research has a low risk area with a wide level of 13212,36 hectares (28,93%), medium risk level covered 31507,38 hectares (69,00%), high risk level covered 806,94 hectares ( 1,77%) and very high risk level covered 137,88 hectares (0,30%). Areal distribution of very high risk level areas are the largest in the Maja with covered area 32,67 hectares (23,69%).
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Judul: Keberadaan Antibodi Asal Induk Newcastle Disease (ND) dan Infectious Bronchitis (IB) pada Broiler yang Divaksinasi Vaksin Rekombinan HVT-IBD
Abstrak: Penelitian ini bertujuan untuk mempelajari keberadaan antibodi asal induk terhadap virus Newcastle Disease (ND) dan Infectious Bronchitis (IB) pada broiler yang divaksinasi dengan vaksin rekombinan Herpesvirus of Turkey (HVT) - Infectious Bursal Disease (IBD). Pada penelitian ini digunakan dua kelompok ayam yaitu: Kelompok Vaksinasi dan Tidak Vaksinasi. Kelompok vaksinasi menerima vaksin rekombinan HVT-IBD pada umur 1 hari. Sampel serum dikoleksi pada umur 3, 6, 9, 12, 15, 19, 22, 26, 29, dan 33 hari. Titer antibodi ND ditentukan dengan uji Hemaglutinasi Inhibisi (HI), sedangkan Enzyme-linked Immunosorbent Assay (ELISA) digunakan untuk menentukan titer antibodi IB. Antibodi ND pada kedua kelompok masih terdeteksi sampai broiler berumur 33 hari, namun titer antibodi ND positif hanya sampai umur 6 hari dan tidak mencapai level protektif. Antibodi IB masih pada level positif sampai dengan umur 6 hari pada kelompok divaksin dan 3 hari pada kelompok tidak divaksin. Hasil penelitian ini mengindikasikan bahwa diperlukan vaksinasi ND pada broiler berumur 3 hari dan vaksinasi IB pada broiler berumur lebih dari 6 hari.
Keyword: Antibodi asal induk, broiler, Infectious, Bronchitis, Newcastle Disease