Judul: Pemetaan sawah baku Kabupaten Subang Bagian Timur dengan Citra Satelit Alos
Abstrak: The existing production estimation system for rice plant is not optimum yet. Therefore, the change of estimation system from list frame to area frame is needed. The area frame approach begin by using remote sensing with satellite image, where the baseline mapping rice field can be made. The purpose of this research is to map and to identify each single rice field parcel include its perimeter (galengan). This research take place in eastern part of Kabupaten Subang by using ALOS PRISM and ALOS PALSAR satellite imageries. Furtheremore, the resulted digitized rice field map is compared with the existing tabular data. Based on that data analysis, it was found that digitazed rice field map had a significant discrepancies compared to the existing data. Further exercise to reconcile the result is required through village base validation.
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Judul: Pemetaan Sawah Baku Kawasan Berbukit Dengan Citra Quickbird dan TerraSAR-X
Abstrak: Estimasi produksi padi saat ini dilaksanakan oleh beberapa instansi antara lain: Badan Urusan Logistik (BULOG), Badan Pusat Statistik (BPS) dan Dirjen Bina Produksi Tanaman Pangan dan Hortikultura, Departemen Pertanian. Oleh karena cara pendekatan, kriteria penilaian, dan metode yang digunakan berbeda maka informasi yang diperoleh juga berbeda. Hal ini menyulitkan pengguna informasi dalam pemanfaatannya. Semua metode tersebut merupakan metode berbasis daftar (list frame), walapun telah digunakan alat GPS. Metode seperti ini sulit mengatasi tantangan menuju pertanian presisi yang terkait dengan akurasi estimasi (sampling error dan non-sampling error) dan jaminan lahan pangan abadi. Penelitian ini bertujuan untuk mendapatkan peta sawah baku di daerah non sentra produksi padi berdasarkan paradigma area frame dengan menggunakan teknologi inderaja resolusi tinggi optik dan radar. Dalam hal ini citra satelit radar asal Jerman, TerraSAR-X dan QUICKBIRD (standard imagery) .
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Judul: Durability of Specific Immunoglobulin (Ig) Y Againts Influenza and Covid-19 in Sunscreen
Abstrak: The benefit of specific immunoglobulin Y (Ig Y) as an active ingredient in personal care products such as sunscreen has not been properly studied. Our study aims to evaluate the reliability of specific IgY against influenza and the COVID-19 virus in a sample sunscreen product. Specific IgY influenza and COVID-19 viruses were inserted in the sample sunscreen at two concentrations of 0.1% and 0.25%. Three treatments were observed: control (C) sunscreen without IgY, treatment 1 (T1) sunscreen with 0.1% IgY, and treatment 2 (T2) sunscreen with 0.25% IgY. Organoleptic observations were carried out to monitor changes in aroma, color, and texture, and sunscreen sampling was done every week for 6 weeks. The durability of IgY was evaluated using an enzyme-linked immunosorbent assay (ELISA) and a neutralization assay. Organoleptic observation from weeks 1 to 6 showed consistency in its aroma, color, and texture. Enzyme-linked immunosorbent assay and neutralization assay (NA) results of the T1 and T2 groups showed negative results except for sample T1 at week 5, which showed a positive result in the Influenza A ELISA. Based on the results, it seems that IgY concentrations of 0.1% or 0.25% were not optimal. However, this negative result might be due to low concentration of the IgY and the presence of beeswax, which inhibits IgY and causes it to dissolve in distilled water, thus preventing it from being detected in the assay.
Keyword: Immunoglobulin Y, Sunscreen, Influenza, COVID-19, Biological Activity