Judul: Transportation Cost Planning of Rice Straw as Bio-Liquid  Natural Gas Raw Material in Cirebon Regency
Abstrak: Jerami padi merupakan hasil samping dari proses produksi beras, sehingga tingginya produksi beras di Indonesia beriringan dengan tingginya produksi jerami padi. Namun, sebagian besar jerami padi tidak dimanfaatkan dan dibakar, menyebabkan masalah kerusakan lingkungan yang beragam. PT X merupakan salah satu perusahaan bahan bakar alternatif di Indonesia yang berencana membangun pabrik Bio-LNG berbahan baku jerami padi di Kabupaten Cirebon. Penelitian ini dilaksanakan di Kabupaten Cirebon selama 4 bulan pada rentang Desember 2022-Maret 2023 dengan tujuan menganalisis perencanaan biaya pengangkutan jerami padi dalam persiapan pembangunan pabrik tersebut. Solusi optimum biaya transportasi diperoleh dengan menggunakan metode Vogel’s Approximation Method dengan uji optimalitsas Modified Distribution. Hasil penelitian menunjukkan bahwa biaya pengangkutan jerami padi dari setiap pemasok ke pabrik bervariasi. Variasi disebabkan oleh perbedaan jarak antar setiap pemasok ke lokasi pabrik, dimana semakin jauh jarak pemasok ke pabrik maka biaya transportasi semakin besar. Variasi juga disebabkan oleh perbedaan total jerami yang diangkut dari pemasok ke pabrik.
Keyword: Bio-LNG, Modified Distribution, rice straw, transportation cost, Vogel’s Apptoximation Method

Judul: Transportation Cost Planning of Rice Straw as Raw Material for Bio-LNG Manufacturing in Indramayu Regency
Abstrak: Industri bioenergi di Indonesia memiliki persentase terkecil sebesar 4% dari total penghasil emisi gas metana di sektor energi. Hal ini membuka peluang untuk mengembangkan Bio-LNG sebagai salah satu bentuk bioenergi dan sesuai dengan Rencana Umum Energi Nasional dan mendukung SDG 7 Energi Bersih dan Terjangkau. Jerami padi merupakan salah satu bahan baku Bio-LNG. PT XY yang merupakan perusaahaan pengembangan energi, berencana membangun pabrik pengolahan Bio-LNG di Kabupaten Indramayu dengan bahan baku dari jerami padi. Penelitian dilaksanakan di Kabupaten Indramayu pada bulan Desember 2022 sampai dengan Maret 2023 dengan tujuan menganalisis perencanaan biaya transportasi dan total biaya pengadaan jerami padi sebagai bahan baku Bio-LNG di Kabupaten Indramayu. Solusi optimum awal diperoleh menggunakan Vogel’s Approximation Method dan uji optimalitas menggunakan Modified Distribution. Hasil penelitian menunjukkan bahwa biaya transportasi jerami padi di Kabupaten Indramayu dipengaruhi oleh jarak dari pemasok ke pabrik dan jumlah jerami padi yang dapat diangkut dalam satu kali perjalanan. Semakin jauh jarak dari pemasok ke gudang mengakibatkan biaya transportasi semakin besar., The bioenergy industry in Indonesia has the smallest percentage of 4% of the total methane gas emitters in the energy sector. This opens up opportunities to develop Bio-LNG as a form of bioenergy and is in line with the National Energy General Plan and supports SDG 7 Clean and Affordable Energy. Rice straw is one of the raw materials for Bio-LNG. PT XY, an energy development company, plans to build a Bio-LNG processing plant in Indramayu Regency with raw materials from rice straw. The research was conducted in Indramayu Regency from December 2022 to March 2023 with the aim of analyzing transportation cost planning and the total cost of procuring rice straw as raw material for Bio-LNG in Indramayu Regency. The initial optimum solution was obtained using Vogel's Approximation Method and optimality test using Modified Distribution. The results showed that the transportation cost of rice straw in Indramayu Regency is influenced by the distance from the supplier to the factory and the amount of rice straw that can be transported in one trip. The longer the distance from the supplier to the warehouse results in greater transportation costs.
Keyword: bio-lng, rice straw, transportation, Sdgs

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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