Judul: Nilai dan manfaat ekonomi keberadaan Taman Kota Menteng, Jakarta Pusat sebagai salah satu bentuk pemanfaatan ruang terbuka hijau
Abstrak: The availability of land for open green space (OGS) in Jakarta competes with other development sector such as infrastructure, building, and property. This condition will affect environmental degradation. Therefore, DKI Jakarta Government tend to increase the number of OGS. One of the government effort was building Menteng Urban Park in Central Jakarta which was originally a sport area of Persija Football Stadium. The development concept was expected to harmonize three functions of the Menteng Park; ecological functions, social and cultural functions, and aesthetics functions. On the other side, the existence of Menteng Urban Park that draws visitors was expected to be economically beneficial for people, especially for entrepreneurs who will see it as job opportunity. The economic value of the existence of Menteng Urban Park was counted with apply willingnes to pay (WTP) by using the contingent valuation method (CVM). Other economic benefit can be seen from the contribution of the labors creation, raise income of community, and did the income which generate from the Menteng Urban Park is the main income. This research aimed to confirm whether the essential value of Menteng Urban Park for the society is suitable with the intention and the objective of government, since the footbal stadium was convert urban park.
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Judul: The Value of Green Open Space in the Forest Park of Penjaringan, North Jakarta
Abstrak: Kepadatan penduduk dan aktivitas ekonomi yang terus meningkat dapat menyebabkan perubahan penggunaan lahan yang dapat menurunkan kualitas lingkungan terutama di wilayah perkotaan. DKI Jakarta termasuk kota yang merasakan dampak dari penurunan kualitas lingkungan. Keberadaan Ruang Terbuka Hijau merupakan salah satu upaya untuk menyeimbangkan dan memperbaiki kualitas lingkungan. Pada saat ini RTH di DKI Jakarta baru berjumlah 9,8% dari 30% target minimal yang ditetapkan berdasarkan Undang-undang Nomor 26 Tahun 2007. Taman Hutan Kota Penjaringan (THKP) merupakan bentuk dari RTH yang berada di DKI Jakarta. Keberadaan THKP mempunyai fungsi ekologis seperti daerah resapan air, penyerap karbon,dan kesejukan. Penelitian ini bertujuan untuk (1) Menganalisis persepsi pengunjung terhadap keberadaan Taman Hutan Kota Penjaringan, (2) Mengestimasi nilai WTP pengunjung terhadap keberadaaan Taman Hutan Kota Penjaringan, (3) Mengestimasi nilai ekonomi guna tidak langsung Taman Hutan Kota Penjaringan.Metode yang digunakan dalam penelitian ini adalah skala likert, Contingent Valuation Method (CVM), Pendekatan harga pasar, benefit transfer dan replacement cost. Hasil pada penelitian ini menunjukkan bahwa persepsi pengunjung terhadap keberadaan Taman Hutan Kota Penjaringan adalah sangat baik. Estimasi nilai total WTP pengunjung sebesar Rp 28, Population density and economic activity that continues to increase can lead to changes in land use that can reduce environmental quality, especially in urban areas. DKI Jakarta is one of the cities that feel the impact of the decline in environmental quality. The existence of Green Open Space is one of the efforts to balance and improve the quality of the environment.. Currently, green open space in DKI Jakarta is only 9.8% of the 30% minimum target set based on Law No. 26 of 2007. Penjaringan City Forest Park (THKP) is a form of green open space located in DKI Jakarta. The existence of THKP has ecological functions such as water catchment areas, carbon sinks, and coolness. This study aims to (1) analyze visitors' perceptions of the existence of the Penjaringan City Forest Park, (2) estimate the WTP value of visitors to the existence of the Penjaringan City Forest Park, (3) estimate the economic value for the indirect use of the Penjaringan City Forest Park. The method used in this study These are Likert scale, Contingent Valuation Method (CVM), market price approach, benefit transfer and replacement cost. The results of this study indicate that the visitor's perception of the existence of the Penjaringan City Forest Park is very good. The estimated total WTP value for visitors is IDR 8,615,503,707 / year. The total economic value for indirect use is IDR 224.563.442,30/year.
Keyword: Contingent Valuation Method, Hutan Kota, Nilai guna tidak langsung, Valuasi ekonomi, Willingness to pay, Economic Value, Indirect use value

Judul: Excretory/secretory antigen of ascaridia galli L3 stage to trigger yolk immunoglobulin in laying hens
Abstrak: Ascaridiosis caused by the nematode Ascaridia galli. A study was carried out to characterize excretory/secretory antigen of A. galli from larval stage to trigger anti-ascaridiosis yolk immunoglobulin in laying hens. A. galli L3 were recovered from intestines of 100 heads chickens 7 days after oesophagus inoculation with 6000 L2. L3 recovered in this manner were cultured (5 – 10 ml-1) in flasks containing rosswell park memorial institute (RPMI) 1640 media, pH 6.8, without phenol red. Cultures were incubated at 370C in 5% CO2 and culture fluid was collected after 3 days in culture. To prepare excretory/secretory antigen, culture medium were concentrated with vivaspin 30.000 MWCO, and antigen protein concentration were counted as described in Bradford method. The molecular weight of excretory/secretory antigen was determined with sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS PAGE). Active immunizations were applied intra muscularly of chickens with an initial dose of 80 μg. The immunizations were repeated three times with dose of each 60 μg with an interval of one week. The first immunizations were excretory/secretory antigen mixed with fruend adjuvant complete and subsequently mixed with freund adjuvant incomplete. The chicken’s eggs were collected from 49 day after immunizations. Anti-ascaridiosis yolk immunoglobulin (IgY) was extracted from egg yolks by means of ammonium sulphate and purified using fast performance liquid chromatography (FPLC). The purity of anti-ascaridiosis IgY was determined by Bradford method (λ = 280 nm). Antibody was detected by agar gel precipitation test (AGPT) and enzyme linked immunosorbant assay (ELISA). Antigen were detected with immunohistochemistry. Chickens were challanged with dose of 1000 L2 A. galli. Passive immunizations were applied ten times with dose of each 0,875 mg IgY with an interval of one day intra orally. IgY anti-ascaridiosis was tested against A. galli survival in vitro.
Keyword: Unggas, Isolasi dan karakterisasi antigen, Purifikasi imunoglobulin yolk, Pengukuran antibodi ayam petelur, Metode Imunohistokimia, Ascaridiosis