Judul: Analisis kelayakan finansial usaha peternakan sapi perah pondok ranggon Jakarta Timur
Abstrak: Usaha peternakan sapi perah dalam perkembangannya di Indonesia cukup pesat. Hal ini terlihat dari kontribusinya yang luas, baik untuk meningkatkan pendapatan, mendukung kebutuhan akan protein hewani berupa susu yang dipenuhi oleh produksi dalam negeri dan sebagian besar dihasilkan oleh peternakan rakyat. Salah satu pusat usaha peternakan sapi perah rakyat adalah usaha peternakan yang berada di Kelurahan Pondok Ranggon, Kecamatan Cipayung, Kota Jakarta Timur. Lokasinya yang dekat dengan sentra konsumen memudahkan peternak dalam memasarkan susu yang dihasilkan. Di sisi lain, peningkatan jumlah penduduk di DKI Jakarta mengakibatkan meningkatnya kebutuhan lahan untuk perumahan. Fenomena tersebut dikhawatirkan akan menggeser penggunaar lahan yang dapat digunakan untuk areal peternakan, dan dapat mempengaruhi keberadaan usaha peternakan sapi perah rakyat di kawasan Pondok Ranggon.
Keyword: sapi perah, peternakan

Judul: Analisis usaha tani dan perhitungan harga pokok susu segar pada peternakan sapi perah rakyat  : (Studi kasus di Kelurahan Kuningan Timur, Kecamatan Setia Budi, Jakarta Selatan)
Abstrak: Usaha peternakan sapi perah di Indonesia telah ada sejak abad ke-19, yaitu dengan adanya impor sapi perah dari Australia, Kemudian pada awal abad ke-20 disusul dengan pengimporan sapi perah jenis "Fries Holland" (FH) dari Negeri Belanda. Pada tahun 1962 PN Perhewani mengimpor sapi perah FH dari Denmark guna mencukupi kebutuhan. susu pada pesta olah raga "Asian Games IV" di Jakarta. Kemudian pada tahun 1965 kembali diimpor sapi- sapi bibit FH dari Negeri Belanda oleh Jawatan Kehewanan. Pusat untuk meningkatkan produksi susu dalam negeri. DKI Jakarta merupakan salah satu daerah yang memiliki potensi cukup besar dalam usaha peternakan sapi perah. Permasalahan uBom yang dihadapi peternak dalam upaya pengembangan usaha peternakan sapi perah rakyat di DKI Jakarta khususnya di wilayah Kecamatan Setia Budi adalah sulitnya lahan untuk usaha peternakan, makin sulitnya ketersediaan hijauan ternak dan makin terdesaknya lahan usaha oleh adanya pembangunan/pengembangan wilayah serta adanya protes masyarakat terhadap dampak limbah usaha peternakan sapi perah. ...
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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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