Judul: Pengaruh Migrasi Sirkuler Terhadap Kondisi Sosial Rumah Tangga Petani
Abstrak: The objectives of this research was to identify the push and pull factors that influence household decisions farmers circular migration, as well as analyzing the effect arising from circular migration to changes in children's education, social roles, patterns of farmers working hours, and the division of labor in farm households. The research was conducted in the Desa Pamanukan Hilir, Kecamatan Pamanukan, Kabupaten Subang. The research uses a quantitative approach to qualitative data supported by survey research methods. In the study it was found that circular migration affects the social conditions of farming households, among them: 1) The main factor farmers kepememiliki circular migration due to lack of land that affect the level of income (economics); (2) Farmers who migrated circularly adjust the division of labor in the household; (3) Households of migrant farmers have more motivation to achieve higher education of children; (4) Farmers use the grace period to work outside the agricultural sector, which affects the reduction of working hours in farming; and (5) Most of the social role of husband and wife when the husband is replaced doing migration.
Keyword: social role, division of labor, change in hours of work, the level of education of children, circular migration, Bogor Agricultural University (IPB)

Judul: The Analyses Impact of Circular Migration to Development Of Rural Economics: Case Study at Informal Trade Households Sector in Two District in Lamongan Regency East Java
Abstrak: This Research analyses impact of circular migration to development of rural economics in two district in Lamongan Regency East Java. By using descriptive analysis, Index of Gini Ratio (IGR), Make An Index To Good Service Ratio (IGSR) and primary data (field survey during 6 months in the year 2005), and also data of Skunder (data of Susenas and data of Podes) please find that: (1)factor especial influencing decision of household to conduct migration of circular is economic factor (lower wages and earnings of agricultural sector), to the number of member responsibilities of household, the so small ownership of agriculture farm, easy to information him concerning work in area of target, and more expand transportation medium him, and personal orientation, (2)characteristic informal sector migrant is farmer household 100 %, most men’s 75 % with domination of agriculture farm less than 1 ha., (3)income and earning distribution become bitterly [of] migration having taken steps of circular, (4)compared to consumption of non food, food consumption become highly. Reinforcement of development is efforts non-farm capitalised by remittances require to be instructed to the make-up of rural development economics.
Keyword: 

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.
Keyword: