Judul: The Impact of Conversion Irrigated Paddy Fields on Availability of Rice Staple Food in Java Island
Abstrak: Pulau Jawa merupakan wilayah yang mengalami petumbuhan ekonomi dan pertambahan jumlah penduduk yang cepat. Semakin banyak jumlah penduduk semakin banyak pula kegiatan pembangunan dan permintaan akan lahan untuk pemukiman, industri, perkantoran, dan lain-lain. Kebutuhan lahan ini akan mendorong terjadinya konversi atau alih fungsi lahan pertanian khususnya lahan sawah, dimana lahan sawah irigasi yang memiliki luas lebih besar daripada jenis sawah lain. Tujuan dari penelitian ini adalah untuk mengetahui laju alih fungsi lahan sawah irigasi di Pulau Jawa, mengetahui faktor-faktor apa saja yang memengaruhi alih fungsi lahan sawah irigasi, dan bagaimana dampak alih fungsi lahan sawah irigasi terhadap produksi padi dan pengaruhnya terhadap ketersediaan pangan di Pulau Jawa. Hasil penelitian menunjukkan bahwa luas lahan sawah irigasi di Pulau Jawa mengalami penurunan sebesar 438.793 hektar dari tahun 2009-2018. Laju alih fungsi lahan sawah irigasi yang terjadi Pulau Jawa tahun 2009-2018 berfluktuasi dengan rata-rata sebesar -0,86 persen. Faktor-faktor yang memengaruhi alih fungsi lahan sawah irigasi adalah jumlah penduduk dan proporsi luas sawah terhadap luas wilayah. Dampak yang terjadi terhadap produksi adalah hilangnya produksi padi pada sepuluh tahun terakhir sebesar 5.150.080,99 ton atau bernilai sekitar Rp. 24.837.837.694.692. Berdasarkan perkiraan luas lahan dan dampaknya terhadap ketersediaan pangan diketahui bahwa pada tahun 2032 prediksi produksi beras di Pulau Jawa sudah tidak bisa memenuhi kebutuhan beras dengan kekurangan sebesar 121.970,98 ton., Java Island is an area that have rapid economic growth and population growth. Increasing population, is also increasing development activities and land demand for settlements, industry, offices, and others. Land requirements will encourage conversion of agricultural land, especially rice fields, where irrigated rice fields have a larger area than other types of rice fields. The purpose of this study was to determine the rate of conversion irrigated rice fields in Java, to find out what factors influence the conversion of irrigated rice fields, and how the impact of conversion of irrigated rice fields to rice production and its effect on food availability in Java Island. The results showed that the area of irrigated rice fields on Java island decreased by 438,793 hectares from 2009-2018. The rate of conversion irrigated rice fields that occurred in Java in 2009-2018 fluctuated by an average of -0.86 percent. The factors that influence the conversion of irrigated rice fields are the population and the proportion of rice fields to the area. The impact on production is the loss of rice production in the last ten years amounting to 5,150,080,99 tons or a value of around Rp. 24,837,837,694,692. Based on the estimated land area and its impact on food availability, it is known that in 2032 the prediction of rice production in Java Island will no longer be able to meet the rice needs with a shortage of 121,970.98 tons.
Keyword: land use change, food availability, paddy field area, rice production, panel data regression

Judul: Dampak Konversi Lahan Sawah dan Industrialisasi terhadap Transformasi Tenaga Kerja di Pulau Jawa
Abstrak: Java is the biggest rice supplier with the largest wetland compared to other islands in Indonesia. However as the most of non-agricultural activities occur in Java, Java suffered from largest wetland conversion. The aims of the reseach were analyzing the wetland conversion in Java spatially, comparing the wetland conversion rate and rice productivity, economic and population growth as well as viewing the influence of wetland conversion rate, industrialization and other factors to the rate of labor transformation from agricultural to industrial sector. Result of spatial analizing using Arc View showed largest wetland conversion from 1986 to 2010 occured in biggest cities and composing economic regions. From the linear trends of wetland availability and rice production, the rice production still increased annually although the availability of wetland decreased. In every region there is disparity of relative productivity between industry and agricultural sector. From 2000 to 2010, some disparities are convergent and some other are divergent due to fluctuation of share of GDP and amount of labor. The econometric result using Eviews 7 in estimating panel data from 2001 to 2010 to predict the effect of GDP and population showed that GDP and population significantly effect on wetland availability. In predicting some factor that influence the labor transformation, the multiple regression model showed only education index that significantly effect the labor transformation from agricultural to industry sector. Other factors such as rate of wetland conversion, disparity of relative productivity between agricultural and industry sector do not significantly cause the shift of labor from agricultural to industrial sector. Tipology of labor based industry presented the biggest addition to transformation rate compare to capital based and natural resources based industries.
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Judul: Light Microscope Study of ConnectiveTissue in The Spleen of Common Rousette Bat (Rousettus amplexicaudatus)
Abstrak: The spleen is the largest lymphoid organ. As a secondary lymphoid organ, in addition to its immune function, the spleen also has functions as blood filtration, storage, and hematopoiesis. The spleen has different morphologies between species that support different physiological functions, one of which is the difference in the structure of the capsule and trabeculae. Capsule and trabeculae of the spleen generally consist of connective tissue and smooth muscle. The thickness of smooth muscle composed together with connective tissue in the capsule and trabecula determines the function of the spleen that is divided spleen into three storage, defense, and intermediate. Bats are the reservoir of various zoonotic diseases. Bats are thought to have unique immune systems compared to other mammals but the characteristics of its immune organs such as the spleen have never been studied before. This study was conducted to examine the characteristics of capsulae and trabecula of the Common Rousette (Rousettus amplexicaudatus).
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