Judul: Analisis kelayakan finansial pembenihan dan pendederan ikan nila wanayasa pada kelompok pembudidaya mekarsari, desa tanjungsari, kecamatan pondoksalam, Kabupaten Purwakarta
Abstrak: Ikan Nila Wanayasa merupakan varietas barn yang dlharapkm dapat meningkatkan pendapatan pembudidaya benih h Nila Lkan Nila yang beredar di pernbudidaya saat ini telah mengalami penurunan mutu yang disebabkan oleh tidak terkontrolnya induk yang digudcan. Hal inilah yang mendorong BPBI Wanayasa untuk melakukan perbaikan genet& temadap Lkan Nila yang ada saat ini. Ikan Nila yang dihasilkan adalah &an Nila Wanayasa. Penelitian ini bertujuan untuk mengetahui gambaran umurn usaha pembenihan dan pendederan Ikan Nila Wanyaca yang dilakukan oleh anggota Kelonlpok Pembudidaya Mekarsari di Desa Tanjungsari, menganalisis keuntungan usaha, rnenganalisis kelayakan investasi yang ditanamkan dan menganalisis sensitivitas usaha terhadap perubahan harga faktor produksi, dalam hal ini adalah pakan. Kelayakan usaha dan sensiti\itas dinilai berdasarkan kriteria investasi yang terdiri atas IVPV, Net B/C, dan IRR.
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Judul: Analisis Kelayakan Pengusahaan Pembenihan Ikan Nila GMT di Kelompok Tani Buni Sari, Caringin Wetan, Sukabumi
Abstrak: Analisis kelayakan merupakan salah satu bentuk analisa untuk menilai kelayakan dari suatu kegiatan usaha dan tingkat keuntungan bagi petani sebagai pengembalian atas investasi atau modal yang digunakan. Tujuan dari penelitian ini adalah untuk menganalisis kelayakan berdasarkan non finansial dan aspek finansial pada pengusahaan pembenihan ikan nila GMT (Genetically Male Tilapia) yang terbagi dalam tiga skenario. Disamping itu, dilakukan juga analisis mengenai tingkat kepekaan sebagai akibat adanya perubahan dalam suatu variabel usaha. Pemilihan responden sebanyak 14 orang petani ikan menggunakan teknik purposive. Data diolah menggunakan program Microsoft excel yang disajikan dalam bentuk tabulasi. Perhitungan biaya dan manfaat disusun dalam bentuk cash flow. Secara finansial dan non finansial, kegiatan pengusahaan pembenihan pada ketiga skenario layak untuk dilakukan. Empat kriteria investasi yakni NPV, Net B/C, IRR, dan Payback Period menunjukkan hasil yang melebihi standar kelayakan suatu usaha. Analisis sensitivitas menunjukkan bahwa penurunan jumlah produksi benih ikan nila GMT memiliki pengaruh lebih besar dibandingkan peningkatan harga pitik.
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Judul: Enhancement of photon absorbtion on BaxSr1-xTiO3 thin films semiconductor using photonic crystals.
Abstrak: In this research, has been conducted BaxSr1-xTiO3 (BST) thin films manufacturing for mole fraction x = 0.25, 0.35, 0.45, and 0.55; and concentration of 1 molar using chemical solution depositon (CSD) method. The materials, which are used in this research, are barium acetate [Ba(CH3COO)2, 99%], strontium acetate [Sr(CH3COO)2, 99%], titanium isopropoxide [Ti(C12O4H28), 97.999%], gallium trioxide [Ga2O3], 2-methoxyethanol [H3COOCH2CH2OH, 99%] and 1 x 1 cm of transparent conductive oxide (TCO) glass as substrate. Two BST thin films are made that for BST thin films which are doped by 10% galium (BGST) as p-type layer and pure BST solution as n-type. BST solution is made by reacting barium acetate [Ba(CH3COO)2, 99%], strontium acetate [Sr(CH3COO)2, 99%] and titanium isopropoxide [Ti(C12O4H28)] into 2-methoxyethanol solvent [H3COOCH2CH2OH, 99%] in accordance with mass gram for each x value. While, BGST solution is made in the same way as BST solution, plus adding gallium at 10% of the mass of BST. Once all materials are reacted, then vibrated using ultrasonic for 90 minutes, and followed by coating BGST / BST on the TCO substrate. Once the layer is formed, then annealed for 15 hours at temperature of 500 °C with increasing rate of 1.67 oC/minute. Characterizations of BST thin films with or without photonic crystals include the absorbance and transmittance in the visible light spectrum, as well as the electrical photoconductivity characterizations. From BST thin films without photonic crystals indicate that our thin films have light absorption area on almost the entire range of the visible light spectrum even to the infrared range with absorption value over than 67.6%, in addition, it can be seen that the maximum absorbance of BST thin films for all mole fractions lie in blue to green light spectrum region, 457 nm ≤ λ ≤ 570 nm and the minimum in yellow to red light spectrum region, 570 nm ≤ λ ≤ 678 nm. The largest absorbance is found at x = 0.25 with average absorbance value of 92.04% and maximum and minimum absorbance peaks at wavelength of 500.89 and 657.72 nm, respectively. At x = 0.35, average absorbance value decreased to 83.55% with maximum and minimum peaks at 505.73 and 613.68 nm, respectively. Then increased to 91.16% at x = 0.45 with maximum and minimum peaks at 506.04 and 618.56 nm, respectively. At x = 0.55, average absorbance value decreased to 80.12% with maximum and minimum peaks at 507.85 and 608.79 nm, respectively. Moreover, it can be seen that the addition of barium mole fraction leads to wider maximum absorbance or minimum transmittance peaks and narrower minimum absorbance or maximum transmittance peaks in the same range of the green and blue & red light spectrums, respectively. BST thin films with photonic crystals show increasing in absorption for all x values in the range of 3.04 into 13.33%. At x = 0.25, average absorbance percentage increased 3.96% from 92.4 into 95.68%, for x = 0.35 average percentage increased 7.07% into 89.45 from 83.55%. Furthermore, average absorbance of BST thin films at x = 0.45 increased 3.04% from 91.16 into 93.93% and x = 0.55 has
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