Judul: Keterkaitan nilai land rent lahan sawah dengan kemiringan lereng, jarak terhadap jalan dan sungai di Kecamatan Padarincang Kabupaten Serang
Abstrak: Subdistrict Padarincang is one of the districts that have the largest paddy fields area in Serang is 3.709,22 ha. In general, the economic value of paddy fields is lower when compared to undeveloped land,so which will accelerate the transfer of paddy fields. This study aims to (1) identify the land rent value of paddy fields based on slope, distance to roads, and rivers, (2) analyze the relationship paddy fields land rent value with slope, distance to roads, and rivers, and (3) analyze the subsistence farmers level from farming results. Implementation of the research include: (1) mapping of paddy fields use, (2) analysis of the value of land rent and subsistence farmers, (3) analysis of land rent rate link with slope, distance roads, and rivers. Value of the land rent in District Padarincang paddy fields which is highest in paddy fields at slope located (0-3 %), is 0-500 m from the road, and within 200- 400 m from the river with a value of Rp 1.148,49 /m2/yr. While the land rent value was lowest for the wetland area located ramps slope (>8-15 %), within 1.000-1.500 m from the road, is 1.400 to 1.600 m from the river with a value of Rp 385,60 /m2/yr. The Linkage land rent value paddy fields located in Padarincang district with slope paddy fields has a strong relationship, so that the slope greatly affect the value of the land rent paddy fields. The relationship between income and expenditure for the owner or tenant farmers unreal with R2 respectively 0,358 and 0,038. It is shown that the value is smaller income than expenses (deficit). At the farmer owners of 60 % deficit, while sharecroppers all respondents 100 % deficit.
Keyword: Bogor Agricultural University (IPB), road  dan river, slope, Land rent

Judul: Analisis land rent pemanfaatan lahan tambak di wilayah pesisir kabupaten Serang provinsi Banten
Abstrak: Pond fisheries is an activity whereby coastal land is used as the major of income for Serang Coastal Community. Tirtayasa Zona lies north of Serang Region and is established as the centre for pond fisheries. The major activity there, is the culture of milk fish (Bandeng). This research aim to identify the characteristic of milk fish culture, measure the land rent based on factor of fertility and distance, and to measure the effect of exogenous variabel changes to the land rent. The result shows that Subdistrict Pontang has the highest productivity and either highest production cost, while Subdistrict Tanara has the longest distance from the market. Based on Ricardian land rent concept, Subdistrict Pontang has the highest land rent that is Rp 1.571.237,00 while Subdis trict Tirtayasa assess land rent equal to Rp 1.327.500,00 and Subdistrict Tanara has the lowest land rent, that is Rp 513.000,00. Using multiple regresion analysis, obtained an equation that expressing the correllation between land rent with factor of productivity and distance. The equation shows, that productivity has a positif correllation with land rent, while distance has a negatif corellation with land rent. Result of optimalization analysis from the activity of Milk Fish culture in each subdistrict, shows that activity of Milk Fish culture practiced by farmers in Zona Tirtayasa almost reaching optimal condition. The result of sensitivity analysis , suggests that the increase of oil prices reduces the value of land rent and the magnitude of change in value of land rent is affected by the distance of the pond location from the market.
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Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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