Judul: Analisis jalur faktor-faktor yang mempengaruhi ketahanan pangan rumahtangga di Kabupaten Lebak, Provinsi Banten
Abstrak: The objective of this research were to: 1) identificate household socio economic characteristics and food acses, 2) analyze household consumption level and household food security level, 3) analyze relation of socio economic factors and household food security, 4) analyze impact of direct factors and indirect factors to household food security. This research was conducted by using cross sectional design. The location was in Pasindangan and Banjarsari Village, Cileles and Warunggunung Subdistrict, Lebak Distric that chosen purposively with concideration that farmer's household. The sample were 101 househholds. The result of the research shows that almost all (62.4%) household were household food security, household food insecurity in heavy level (7%), household food insecurity in moderate level (5%), and household food insecure (26%). factors that significantly relation with household food security were size of household, own of land, and household expenditure per capita. Direct factor that influence household food security was household expenditure expenditure per capita. Indirect factors that influence household food security were size of household – household expenditure per capita – household food security.
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Judul: Peran Kelompok Tani dalam Ketahanan Pangan Rumahtangga Petani (Desa Banjarsari dan Desa Tanjungsari, Kecamatan Sukaresik, Kabupaten Tasikmalaya, Propinsi Jawa Barat)
Abstrak: The purpose of this study was to identify the level of household food security of farmers who have been realized, analyze factors that affect household food security of farmers and formulate farmer groups roles in farmers households to achieve food security. Research approach design by survai, the reasearch respondents were 60 head of household the members of farmer farmer group from Banjarsari and Tanjungsari villages, Sukaresik District, Tasikmalaya District, West Java Province. The research uses quantitative and qualitative statistical method with Rank Spearman Correlation to examine variables. Results from the study showed that farmers' household food availability is adequate but is not stable when the season facing famine, drought or shortly before harvest. Need to increase the role of farmer groups to achieve household food security of farmers.
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Judul: Synthesis of Apatite - Chitosan Composite Using Duck Eggshell and Chitosan with Temperature and pH Control
Abstrak: Composite of apatite-chitosan was prepared by using chitosan as polymer matrix. Calcium phosphate was prepared from CaO and (NH4)2HPO4, which the ratio Ca : P had to be 1.67. Chitosan is produced by deacetilase from biopolymer chitin. Duck eggshell (95% CaCO3) as starting material was converted to be calcium oxide (CaO) through calcinations with temperature 1000oC for 5 hours. In-situ and ex-situ methods were prepared from apatite and chitosan (dissolved with acetate acid 2%). Calcium phosphate prepared for bone implantation, but it is too fragile and brittle to be implant into the body. So addition of chitosan can decrease crystalinity and increase mechanic characteristic (tougher). Composite apatite-chitosan was resulted by fast precipitation. Fast precipitation was held in a breaker glass with nitrogen atmosphere, under controlled temperature at 37oC and pH 7, in order to increase amount of hydroxyapatite. Precipitation with CaO which was dropped by (NH4)2HPO4. Hydroxyapatite and chitosan were appearing at samples with in-situ and ex-situ methods which indicating by peak matching of XRD (closed lattice parameter, crystal size), overlapping at FTIR spectra and supporting by SEM picture (homogenous and agglomerated particle). However, it still needs further research to examine biocompatibility osteoconductive degree of sample by in-vivo and in-vitro test.
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