Judul: Potret Kehidupan Pemulung di Kota Depok (Studi Kasus Lapak Pemulung di Kelurahan Beji, Kecamatan Beji, Kota Depok, Provinsi Jawa Barat)
Abstrak: This research has been carried out in the slum of scavengers, at Beji Village, Beji Subdistrict, Depok, West Java. The Objectives of this research are: First, to know the characteristic, family, activity and settle description of scavengers. Second, to analyze the social interaction among scavengers, the social interaction between scavengers and their boss, and with their local community. Third, to know the existing institution among scavengers within its establishment and development process. The method of this research is qualitative approach that supported by case study technic consisting of in depth interview to focus on some cases, limited observation, and document analysis. Five families or nine scavengers have been selected as the representative cases of this research by purposing after determining spesific criteria in terms of this. The result of this research shows that there are several particular characteristics which reflected scavengers’ proffession. The pattern of social interaction among scavengers and their friends, scavengers and their boss have been running well. The scavengers have rarely social interaction to their local community in their surrounding slum based on this research. It is caused by their ashamedness to interact with the local community. The institution which related with the existence of scavengers is deemed to be important as one of the way for fulfilling their ultimate of life. The regulation concerned to the scavengers is initiated from interaction process among them till attain a collective agreement.
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Judul: Tinjauan Tentang Fenomena Pemulung Dan  Penanganan Sampah di Wilayah DKI Jakarta  dan Bailtar Gebang Bekasi
Abstrak: Perkembangan wilayah di Indonesia terutama kota-kota seperti Jakarta seringkali menyebabkan perubahan struktur ekonomi yang terjadi tidak didukung oleh perubahan struktur tenaga keja secara proporsional. Akibatnya tidak tejadi penyerapan tenaga keia pada sektor industri seperti yang diharapkan sehingga tenaga keja yang menganggur beralih ke sektor informal. Salah satu contoh kegiatan sektor informal adalah pengumpulan barang bekas yang dilakukan oleh orang yang disebut sebagai pemulung.
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Judul: Pembentukan Tanaman Haploid Ganda dengan Perlakuan Oryzalin Secara In Vitro pada Biji Jagung (Zea mays) Diduga Haploid
Abstrak: BC2 maize purple kernels estimated haploid were resulted from a cross between Bisma variety with haploid inducer line (3490) by backcross. Chromosome doubling to these kernels was done to produce doubled haploid plants (pure lines). This study was conducted to get an in vitro diploidisation method by oryzalin treatment as a chromosome doubling agent, with concentration of 0, 5, 10, and 15 mM for 24 hours on seeds and root of seedlings. Chromosome analysis on the control of purple kernels showed 66.7% of the seeds was haploid and 33.3% was diploid. Oryzalin treatment affected in doubling the chromosome number from haploid to doubled haploid or from diploid to tetraploid. The higher concentration of oryzalin increased the opportunity of chromosome doubling, but increased death rate. Combination of treatment that is most efficient was 5 mM oryzalin on seedling roots that produced the highest number of doubled haploid plants was found by 71.4% with a low mortality rate by 30%. Increasing of the chromosome number caused the growth of the longer canopy length and more number of leaves and the lower stomata density.
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