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: Influenza Specific Immunoglobulin Y Purification from Egg Yolk with Sodium Chloride Precipitation Method
Abstrak: Imunoglobulin Yolk (IgY) yang terdapat dalam kuning telur telah banyak dimanfaatkan untuk imunoterapi dan imunodiagnostik. Salah satu kendala dalam pemurnian IgY dari kuning telur adalah pemisahan Ig dengan lemak, sehingga teknik pemurnian Ig selalu berkembang. Penelitian ini bertujuan untuk melakukan pemurnian IgY dari kuning telur dengan metode pengendapan menggunakan sodium chloride (NaCl) serta melakukan karakterisasi IgY spesifik influenza. Sodium chloride dipilih karena bahan kimia ini relatif murah, ramah lingkungan, dan tidak merusak imunoaktivitas IgY. Kuning telur yang digunakan dalam penelitian ini berasal dari telur ayam layer yang divaksinasi dengan vaksin influenza Flubio® yang berisi virus Influenza A/H3N2, A/H1N1 dan B/Washington. Pemurnian IgY hanya dilakukan pada kuning telur yang mengandung antibodi spesifik influenza. Deteksi keberadaan antibodi spesifik influenza ditentukan dengan uji agar gel presipitasi (AGP) dan metode enzyme linked immunosorbent assay (ELISA). Konsentrasi IgY hasil pemurnian dihitung dengan spektrofotometer dan karakterisasi protein dilakukan dengan metode Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis (SDS-PAGE). Konsentrasi protein dari hasil pemurnian IgY memiliki nilai rata – rata 50,403 mg/mL. Hasil SDS-PAGE menunjukkan enam pita protein, yaitu struktur IgY utuh (174,63 kDa), Apoprotein-LDL (129,77 kDa), rantai berat IgY (66,54 kDa), Fab ( 47,65 kDa), rantai ringan IgY (21,85 kDa), dan β-livetin (36,74 kDa). IgY hasil pemurnian masih dapat berikatan dengan antigen influenza berdasarkan uji ELISA. Hasil penelitian ini menunjukkan bahwa pemurnian IgY menggunakan metode pengendapan NaCl dapat memurnikan IgY dengan struktur utuh, meskipun masih ada dua protein tidak spesifik hasil pemurnian. IgY yang dapat berikatan dengan antigen influenza mengindikasikan prospek pemanfaatannya untuk pencegahan influenza dan imunodiagnostik., Yolk immunoglobulin (IgY) contained in egg yolk has been widely used for immunotherapy and immunodiagnostics. One of the obstacles in IgY purification from egg yolk is separating Ig from fat, so that IgY purification techniques are always developing. This study aimed to purify IgY from egg yolk using sodium chloride (NaCl) precipitation method and to characterize influenza-specific IgY. Sodium chloride was chosen because this chemical is relatively unexpensive, environmentally friendly, and does not impair IgY immunoactivity. The egg yolks used in this study were collected from layer eggs vaccinated with the Flubio® influenza vaccine, which contains the Influenza A/H3N2, A/H1N1 and B/Washington viruses. IgY purification was only carried out on egg yolks containing influenza specific antibodies. The presence of influenza-specific antibodies was determined by the agar gel precipitation (AGP) test and the enzyme linked immunosorbent assay (ELISA) method. The purified IgY concentration was determined using spectrophotometer, and protein characterization was performed using the Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis (SDS-PAGE) method. Protein concentration from purification has a mean value of 50,403 mg/mL . SDS-PAGE result showed six protein bands, namely intact IgY structure (174,63 kDa), Apoprotein-LDL (129,77 kDa), IgY heavy chain (66,54 kDa), Fab (47,65 kDa), IgY light chain (21,85 kDa), and β-livetin (36,74 kDa). The purified IgY still able to bind with influenza antigen based on the ELISA test. The results of this study indicate that purification of IgY using the NaCl precipitation method can purify IgY with intact structure, although there are still two unspecific proteins in the purification results. The resulting IgY can bind to influenza antigens indicating the
Keyword: Immunoglobulin Y, influenza, egg yolk, purification, sodium chloride