Judul: Interrelated Study between Land Rent and Agriculture Land Conversion has been conducted in Pancoran Mas Sub-District, Depok County
Abstrak: The more development activity and population growth happened, generated the higher land demand. This was not supported by availability and permanent land capacity. As an impact, there was a land conversion especially frorn green open space into non green open space. The largest land conversion occurred from agriculture land to urban land. One of the reasons that enhanced conversion process was low agriculture land rent compared with non agriculture land rent.
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Judul: Analisis Dampak Ekonomi dari Alih Fungsi Lahan Pertanian ke Non Pertanian Terhadap Ketahanan Pangan di Kabupaten Bogor.
Abstrak: Population growth in Bogor Regency increasing year by year. Along with population growth, there is also increasing food needs that related to agricultural sector. Currently, changes to the transformation of the economic development towards the direction of industrial development and manufacturing. In addition, increasing population growth requires residential development. This case, indicated agricultural land conversion. The aims of the study were to know the rate of agricultural land conversion in Bogor Regency, to find out the factors which affect, and to analyze the economic effect and an appropriate policy in the control of agricultural land conversion. Agricultural land conversion in Bogor Regency has been fluctuated year by year. The average of land conversion in Bogor Regency was 0,01 percent per year or 7,1 hectar per year. On this study showed that the increasing density of society and the paddy productivity were affected to the agricultural land conversion. Meanwhile, the agricultural land conversion will affect change of the farmer‟s total income before and after land conversion amount of Rp 52.176 in month. The average income before the conversion amount of Rp 1.931.157 and the average income amount of Rp 2.878,96. Beside the farmer‟s total income, the agricultural land conversion also caused the reducing of paddy production. The average loss of paddy production per hectare converted land was 2.878,96 tons per year, while the average loss production value was Rp 7.771.656.534,60 in paddy forms and Rp 8.518.512.570,00 in rice forms. The estimation result of food security in Bogor Regency showed that rice production has not adequated the needs of rice in 2002- 2011.
Keyword: Effect, Bogor Regency, Agricultural land conversion, Bogor Agricultural University (IPB)

Judul: Natural Pearlescent Pigment Dari Kristal Guanin Sisik Ikan Bandeng (Chanos Chanos)
Abstrak: Pearlescent pigment yang dikenal dengan nama pearl essence atau fish silver merupakan pigmen berwarna keperakan yang memiliki kenampakan seperti mutiara. Natural pearlescent pigment diperoleh dari sisik ikan dengan kandungan guanin 75-97%, dan kini mulai banyak digunakan pada industri personal care dan produk kosmetika. Penelitian ini bertujuan untuk menentukan teknologi ekstraksi natural pearlescent pigment dan karakteristik kualitatif kristal guanin pada sisik ikan bandeng (Chanos chanos). Perlakuan dalam penelitian ini meliputi ekstraksi menggunakan air deionisasi dengan sisik yang dibekukan terlebih dahulu, air deionisasi 10 οC, dimetil sulfoksida 15%, dan 25% (v/v). Hasil spektrum absorbansi UV-Vis menunjukkan kristal guanin merupakan pigmen berwarna putih berdasarkan serapan pada panjang gelombang 200-800 nm. Hasil terbaik diperoleh pada ekstraksi menggunakan air deionisasi dengan sisik beku nilai kristalinitas 68,4%, serapan gugus amina pada 3410 cm-1 dan gugus amida pada1681 cm-1, puncak intensitas 2θ pada sudut 27,7° yang menunjukan identitas dari kristal guanin anhidrat. Tingkat kandungan guanin sebesar 0,0455 ± 0,0033 g (0,46%).
Keyword: Dimetil sulfoksida, guanin, kosmetik, kristalinitas, pearlescent pigment