Judul: Hubungan Beberapa Karakteristik dan Perilaku Komunikasi Pemuka-Pemuka Tani dalam Diseminasi Teknologi Model Farm di Daerah Aliran Sungai (DAS) Citanduy Ciamis Jawa Barat
Abstrak: Penelitian ini bertujuan untuk: (1) mengetahui distribusi pemuka tani model farm dan dampak diDAS Citanduy menurut karakteristik mereka yang diamati, (2) mengetahui perilaku komunikasi pemuka tani itu dalam proses diseminasi teknologi model farm, dan (3) mengukur derajat hubungan antara perilaku komunikasi pemuka tani itu dengan beberapa karakteristik sosial ekonomi mereka yang diamati.
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Judul: Analisis efektivitas komunikasi model prima tani sebagai diseminasi teknologi pertanian di Desa Citarik Kabupaten Karawang Jawa Barat
Abstrak: This research is aiming to know the analyze of Prima Tani model communication effectiveness as a agricultural technology disseminations in Citarik Village, Karawang Region, West Java Province. The analyze was formed to find out personal characteristics, community of farmer institutions, accessibility, essential and support factors in agricultural development, Prima Tani communication media, Prima Tani communication effectiveness in agricultural business (planting rice) development model. This research was designed as a correlated descriptive survey and using cluster random sampling method for 80 farmer respondents. The analyze of correlations were done by rank Spearman and chi-square. The results of research are: age, formal education, non-formal education, farming experience, average income, agricultural business status, land usage, interpersonal communication farming orientations, and farmer status that personal characteristics as an internal factors have a highly significant correlation with spread out technology and Prima Tani clinic in usefull of communication media. Spread out technology and Prima Tani clinic in usefull of communication media have a significant correlation with external factors. The usefull of communication media have a highly significant correlation with Prima Tani communication effectiveness in agricultural business development model, except affective. Internal factors have a significant correlation to Prima Tani communication effectiveness in agricultural business development model, except affective. External factors have a significant correlation to Prima Tani communication effectiveness in agricultural business model
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Judul: In Vitro Release of Ibuprofen from Microcapsules Coated Polyblend of Poly(lactic acid) and Poly(ε-caprolactone)
Abstrak: Ibuprofen is an anti-inflammatory drug that has a short biological half-life and imposes adverse gastrointestinal reaction. Microencapsulation could be used to minimize its disadvantages. In this experiment, microencapsulation of ibuprofen was done by emulsification method. Coating material which was used were polyblend of poly(lactic acid) and poly(ε-caprolactone) which are biodegradable and biocompatible. Polyvinylalcohol was used as an emulsifier at concentrations of 1.5%. The microencapsulation was carried out with various quantities of ibuprofen. The increase in quantities of ibuprofen would improve encapsulation efficiency. Encapsulation of ibuprofen showed an efficiency of more than 71% with the highest score of 84.13% in microcapsule with ratio of polyblend-ibuprofen 5:1.5. The dissolution test results in basic medium showed that the encapsulation efficiencies affected ibuprofen release from the microcapsule. Microcapsules with the higest encapsulation efficiency released ibuprofen ranged from 26.71 to 28.78% for 6 hours. Kinetic of ibuprofen release followed first order kinetic model. The microcapsules particle sizes ranged from 38 to 250 μm.
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