Judul: Economic Potential Analysis and Sustainable Green Shell (Perna viridis) Waste Management Strategy (Case Study: Ketapang Village, Mauk District, Tangerang Regency)
Abstrak: Salah satu komoditas unggulan wilayah pesisir adalah kerang. Berdasarkan survei di lapang terdapat enam pengusaha produksi perebusan kerang hijau di Desa Ketapang, Kecamatan Mauk, Kabupaten Tangerang. Kegiatan tersebut memberikan dampak negatif terhadap lingkungan berupa timbulan limbah cangkang kerang hijau. Pengelolaan limbah cangkang kerang hijau yang berkelanjutan sangat dibutuhkan untuk mengurangi timbulan limbah cangkang kerang di Desa Ketapang. Oleh karena itu, penelitian ini bertujuan untuk: (1) Mengidentifikasi kerang hijau di Desa Ketapang; (2) Mengidentifikasi manfaat pengelolaan cangkang kerang hijau di dalam sircular economy; (3) Menganalisis potensi ekonomi pengelolaan limbah cangkang kerang hijau; (4) Menganalisis strategi pengembangan pengelolaan limbah cangkang kerang hijau berkelanjutan. Metode analisis yang digunakan yaitu perhitungan rendemen, analisis biaya dan manfaat dan Analytical Hierarchy Process. Hasil penelitian menunjukkan bahwa limbah yang dihasilkan Desa Ketapang dalam sebulan mencapai 155,5 ton. Potensi ekonomi yang timbul dari pengelolaan limbah cangkang kerang hijau menjadi tepung cangkang kerang hijau di Desa Ketapang sebesar Rp432.000.000,00 per tahun. Strategi pengembangan pengelolaan limbah cangkang kerang hijau berkelanjutan di Desa Ketapang, Kecamatan Mauk, Kabupaten Tangerang menghasilkan prioritas kriteria kelembagaan dengan prioritas alternatif yaitu, melibatkan karang taruna dalam pengelolaan, melakukan pemasaran kemitraan dalam pengelolaan limbah cangkang kerang hijau, dan melakukan pengembangan usaha berbasis sircular economy., Shellfish is one of the leading commodities in coastal areas. Based on a survey in the field, there are six producers of green mussel stew production in Ketapang Village, Mauk District, Tangerang Regency. These activities negatively impact the environment in the form of waste generation. Sustainable management of green mussel shell waste is very much needed to reduce the generation of shellfish waste in Ketapang Village. Therefore, this study aims to: (1) Identify green mussel shell waste in Ketapang Village; (2) Identify the benefits of green mussel shell management in a circular economy; (3) Analyze the economic benefits of green mussel shell waste management; (4) Analyzing the development strategy of sustainable green mussel shell waste management. The analytical methods used are yield calculation, cost and benefit analysis, and Analytical Hierarchy Process. The results showed that the waste produced by Ketapang Village in a month reached 155.5 tons. The economic potential arising from managing green mussel shell waste into green mussel shell flour in Ketapang Village is Rp432.000.000,00 annually. The strategy for developing sustainable green mussel shell waste management in Ketapang Village, Mauk District, Tangerang Regency produces institutional priority criteria with priority alternatives, namely involving youth groups in management, marketing partnerships in managing green mussel shell waste, and conducting business development based on a circular economy.
Keyword: cost and benefit analysis, circular economy, circular economy, yield calculation

Judul: Valuasi Ekonomi dan Model Pengendalian Dampak Pencemaran Wilayah Pesisir Studi Kasus Dampak Pencemaran terhadap Budidaya Keranghijau (Perna viridis) di Teluk Jakarta
Abstrak: ADRIANTO AND DEWAYANY SUTRISNO. Waters of Jakarta Bay is one of Indonesia's waters are teeming with various kinds of human activities. Jakarta Bay waters also the last of the water bodies that collect waste from industrial and waste disposal in Jakarta and surrounding areas who dispose of their waste directly or indirectly through the 13 rivers that empty into the Bay of Jakarta. Therefore, the main problem in the waters of Jakarta Bay is the presence of pollution, such as heavy metal pollution. The purpose of this study was to analyze heavy metal ; analyze the economic losses caused by pollution, and develop strategies to control pollution by using green mussels as biofilters. The experiment was conducted in Jakarta Bay coastal region into the North Jakarta in February-December 2012. Economic valuation is done by using the approach effect on production (EOP), as well as economic analysis environment desire to receive compensation (WTA). To get control strategies do impact on the dynamic system approach is based on the actual conditions of the study results and existing theory with the help of Stella version 8 software. The results showed the content of heavy metals Hg and Cd in the water in the Bay of Jakarta in some locations has exceeded a predetermined threshold, so that only Pb is generally not exceed a predetermined threshold. Heavy metals in mussel were high. The value of the economic benefits Jakarta Bay waters by its function as a place of green mussel cultivation of potentially economic-ecological value losses when there is contamination amounting to Rp 5 485 067 304, - per hectare. The total value of the benefits of green mussel farming activities carried out in the Bay of Jakarta is Rp. 35 149 103 520, - The calculation result shows that the willingness to accept the reduced pollution per individual to be associated with the cultivation of mussels, amounting to Rp. 40 632 299 / individual / year. Based on this, the total economic value of the willingness to accept the possibility of loss of revenue due to pollution in the Bay of Jakarta is Rp 63 223 857 870, -per year. Based on the scenarios in dynamic system. the scenario with the increasing number of green mussel chart at 20 % per year, making green mussel production will increase by 50%. In this case the prediction in 2020, the number of charts of 5,375 units, the green mussel production will increase to 385 260 tonnes. In these conditions the expected mercury content decreased to 0.005592 mg / liter, the content of Cd decreased to 0.001807 mg / liter and the concentration of Pb decreased to 0.001601 mg / liter. The existing green mussels in the Bay of Jakarta will be more suitable if used as a purifier. Strategy to increase the amount of green mussels in the waters of Jakarta Bay may be an alternative strategy for the control of heavy metal pollution in Jakarta Bay...dst
Keyword: akumulasi, kerang hijau, logam berat, valuasi ekonomi

Judul: Comparison of HIV Model with and without Time Delay
Abstrak: Acquired immunodeficiency syndrome (AIDS) is the reduction of the human immune system. AIDS is caused by human immunodeficiency virus (HIV). No medicine has been found for this desease until recently. An AIDS therapy is usually performed with highly active antiretroviral therapy, namely reverse transcriptase inhibitors, protease inhibitors and combination of both. Various models have been developed to explain the immune system of patients with AIDS, namely the HIV, response and the time delay model. This paper discusses the comparison between the dynamics of the HIV virus, the dynamic response of protease inhibitors and dynamics of time delay. The dynamics model of HIV is influenced by the level of white blood cells produced and the rate of its death. Dynamics of protease inhibitors on the response and the time delay model is influenced by the death rate of infected white blood cells and the failure rate of treatment.
Keyword: