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: Nilai Ekonomi Taman Kota di Jakarta
Abstrak: Kota Jakarta memiliki beragam permasalahan lingkungan, mulai dari kepadatan penduduk, urban heat island (UHI), semakin bertambahnya kendaraan bermotor hingga berkurangnya lahan hijau. Permasalahan ini saling kait mengait. Suhu udara dan kelembaban udara sebagai bagian dari unsur iklim mikro berpengaruh pada tingkat kenyamanan yang pada akhirnya mempengaruhi produktivitas seseorang. Ruang terbuka hijau (RTH) kota dapat menghasilkan iklim mikro menjadi lebih nyaman. Permasalahannya taman kota ini belum diperhitungkan atau belum disadari betapa besar nilainya bagi penyelesaian masalah lingkungan di Jakarta karena manfaatnya intangible. Penelitian ini bertujuan menganalisis persepsi pengunjung dan masyarakat terhadap manfaat taman kota, menganalisis iklim mikro dan kenyamanan udara taman kota di Jakarta, dan menduga nilai ekonomi taman kota di Jakarta. Penelitian ini dilakukan di Hutan Kota Srengseng (Kelurahan Srengseng, Jakarta Barat), Taman Menteng (Kelurahan Menteng, Jakarta Pusat), Taman Suropati (Kelurahan Menteng, Jakarta Pusat), Taman Langsat (Kelurahan Kramat Pela Jakarta Selatan), dan Taman Ayodia (Kelurahan Kramat Pela, Jakarta Selatan). Data penelitian dikumpulkan selama bulan November 2016 - Februari 2017. Persepsi dan motivasi responden disajikan dalam bentuk tabulasi dan dianalisis secara deskriptif kualitatif. Iklim mikro dianalisis secara deskriptif dan kenyamanan udara dianalisis menggunakan rumus Tempereture Humidity Index (THI). Analisis regresi berganda untuk memperoleh model willingness to pay (WTP) dari metode Contingent Valuation Method (CVM) dan Hedonic Price Method (HPM). Hasil penelitian ini menunjukkan bahwa persepsi masyarakat dan pengunjung terhadap manfaat taman kota dinilai positif. Kenyamanan udara dan keberadaan taman kota dinilai penting bagi masyarakat. Kenyamanan udara taman kota Jakarta termasuk dalam kategori tidak nyaman dengan nilai THI >28 namun masyarakat mempersepsikan taman kota nyaman. Selain itu, nilai THI di luar taman kota nilainya lebih tinggi dibanding di dalam taman kota. Nilai ekonomi taman kota di Jakarta dengan metode CVM menunjukkan nilai total WTP per tahun dari pengunjung dan masyarakat periode kunjungan diduga yaitu senilai Rp 29.924.977.728/tahun, dan periode perbulan yaitu Rp 6.276.064.800/ tahun. WTP pengunjung dipengaruhi oleh faktor jenis kelamin, umur, status pernikahan, jumlah tanggungan pendidikan, dan pendapatan bagi pengunjung taman kota, dan tambahan faktor kategori penduduk dan lama domisili bagi WTP masyarakat. Analisis hedonic price menunjukan adanya pengaruh keberadaan taman kota terhadap harga properti tempat tinggal dilihat dari nilai jaraknya ke taman kota. Semakin dekat 1 meter dari taman kota akan meningkatkan harga properti milik pribadi senilai Rp 41.960/m2 dan sewa properti sebesar Rp 5.412/m2 per bulan.
Keyword: ekonomi, nilai, taman kota

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