Judul: Representasi Sosial Pertanian pada Pemuda Tani di Komunitas Pertanian Lahan Kering (Kasus Desa Pasawahan, Kecamatan Banjarsari, Kabupaten Ciamis, Jawa Barat)
Abstrak: Lack of interest in the young labor force to work in the agricultural sector became one of concern for agricultural sustainability in Indonesia. The decline would have youth-related social representations of farm youth. How young people view rural agriculture is an interesting thing to learn. The purpose of this research was to determine the social representation of children of farmers for agriculture and how this relates to socio-economic characteristics, in Desa Pasawahan, Kabupaten Ciamis, Jawa Barat. The number of respondents in this research were 40 people with incidental sampling, with 16-25 years age and they are farmer's son. In general, the social representations of youth tends to positive. However, farm youth still see agriculture in terms of workload, so they are unwilling to work in the agricultural sector for the future. Both social representation of agriculture and farm work in farm youths are the same. In general, youth farm represented that agriculture and work of farmers as an agricultural activities which is related to physical strength on farms. In contrast to agriculture and farm work, the young peasant farmers represent a positive affection from professional farmers. To land, a young peasant represent as a means of working agricultural land conditions that are less satisfying. Meanwhile, dry land, farm youth in general represent the negative affection of dry land. Individual characteristics associated with farm youth social representations shown on the social representation of farmers, land, and dry land. While socialization farm jobs associated with the social representations of social representations shown on dry land.
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Judul: Hubungan Orang Tua, Media Massa, dan Teman dengan Sikap Pemuda terhadap Pekerjaan di Bidang Pertanian (Kasus Pemuda di Desa Cipendawa dan Desa Sukatani, Kecamatan Pacet, Kabupaten Cianjur)
Abstrak: The study about youth attitude was conducted in order to identify about kinds of behavior that would be performed by the youth towards agricultural livelihood. By identifying their attitude, people could be able to estimate response from youth about agricultural livelihood. The objectives of this study were: 1). To identify youth attitude towards agricultural activities. 2). To identify internal characteristics of youth, socialization from parents, mass media exposure, and interaction with peers. 3). To analyze the correlations between internal factors and youth attitude towards agricultural livelihood. 4). To analyze the correlations between socialization from parents, mass media exposure, and interaction with peers with youth attitude towards agricultural livelihood. 5). To analyze the correlations between perception toward rural condition and youth attitude towards agricultural livelihood. A number of 65 respondents were taken as sample. This study resulted several important outputs namely, 1). Majority of youth supported and agreed to work at agricultural setting 2). Majority of the youth were categorized late adolescence, low level of education, their parents were owner of their own farmland, low level in farmland mastery, low level in cosmopolite, low frequency from parents on telling about agriculture, average level on youth involvement in helping parents in farming activities, low frequency on mass media exposure, less than 20 minutes in every opportunity of watching television and also listening radio, low interaction with peers on agricultural sector, and good perception toward rural condition 3). There were several variables correlated to youth attitude towards agricultural livelihood i.e. age, gender, youth involvement in helping parents in farming activities, intensity on watching television, closeness with peers, and perception towards further condition of agricultural development.
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Judul: Kendali Ukuran Nanopartikel Magnetik Oksida Besi (Fe3O4/γ-Fe2O3) dengan Modifikasi Kekuatan Ionik untuk Aplikasi Biomedis
Abstrak: Nanopartikel yang digunakan dalam bidang biomedis harus stabil terdispersi. Untuk itu, diperlukan penyalutan dengan material lain. Salah satu material yang dapat digunakan adalah apoferitin yang hanya memiliki ukuran diameter bagian dalam 8 nm. Penelitian ini bertujuan mengendalikan kekuatan ionik dari media dengan modifikasi NaNO3 dan agen peptisasi HNO3 agar diperoleh magnetit dengan ukuran partikel 8 nm yang stabil terdispersi dan memiliki nilai magnetisasi saturasi tinggi. Partikel magnetit dengan ukuran 8 nm berhasil disintesis dengan modifikasi NaNO3. Hasil analisis difraktometer sinar-X dan mikroskop elektron transmisi menunjukkan modifikasi NaNO3 menyebabkan penurunan ukuran kristalit dan ukuran partikel magnetit. Ukuran partikel yang diperoleh kurang dari 10 nm. Hasil analisis sifat magnet dengan vibrating sample magnetometer menunjukkan partikel magnetit yang diperoleh memiliki nilai magnetisasi saturasi tinggi. Pola distribusi ukuran partikel menunjukkan pengaruh tambahan HNO3 menyebabkan nanopartikel magnetit menjadi lebih terdispersi serta waktu penambahan NaNO3 sebelum atau setelah presipitasi berpengaruh pada keseragaman ukuran partikel magnetit yang diperoleh. Kondisi optimum sintesis nanopartikel diperoleh saat konsentrasi NaNO3 6 M yang ditambahkan sebelum presipitasi serta dengan tambahan agen peptisasi HNO3 1 M.
Keyword: Fe3O4, nanopartikel magnetik, NaNO3, ukuran partikel