Judul: ANALYSIS OF SILVOPASTURE DEVELOPMENT POTENTIAL (Case Study of Mount Walat Educational Forest in Sukabumi Regency, West Java)
Abstrak: Silvopastural merupakan kombinasi pengelolaan pohon dan hewan peliharaan sebagai sistem saling berkesinambungan dengan hasil panen ganda di lahan yang sama. Sumber daya Hutan Pendidikan Gunung Walat (HPGW) yang melimpah dan sektor peternakan yang mengalami peningkatan dari segi permintaan menjadi potensi yang dapat dikembangkan. Penelitian ini bertujuan untuk mengidentifikasi potensi silvopastural dan menganalisis kelayakan usaha berdasarkan aspek ekonomi, sosial, dan ekologi. Metode yang digunakan, yaitu Analisis Hierarki Proses (AHP), Analisis Finansial dengan kriteria Break Even Point (BEP), Net Present Value (NPV), Benefit Cost Ratio (BCR), dan Internal Rate of Return (IRR), serta Analisis Ekologi dengan kriteria kondisi lingkungan dan senyawa berbahaya limbah ternak. Hasil dari penelitian ini didapatkan bahwa potensi silvopastural berdasarkan perhitungan AHP, ialah usaha Sapi Brahman manjadi pilihan pertama, Kambing Etawa pilihan kedua, Domba Garut pilihan ketiga, dan Sapi Friesien Holstein pilihan keempat. Aspek finansial menunjukkan bahwa usaha Sapi Brahman, Sapi Friesein Holstein, dan Kambing Etawa layak untuk dijalankan serta usaha Domba Garut tidak layak untuk dijalankan. Aspek sosial menunjukkan bahwa usaha silvopastural dapat membuka lapangan pekerjaan dengan penyerapan tenaga kerja 5–10 orang dan menjadi sumber pendapatan tambahan sebesar Rp3.064.218,08. Aspek ekologi menunjukkan bahwa Sapi Brahman dan Sapi Friesein Holstein dapat beradaptasi terhadap kondisi ketinggian tempat, suhu udara, dan curah hujan di Hutan Pendidikan Gunung Walat, akan tetapi kelembaban udara di Hutan Pendidikan Gunung Walat relatif lebih tinggi dibandingkan dengan kelembaban udara optimal pemeliharaan Sapi Brahman dan Sapi Friesein Holstein. Kambing Etawa dan Domba Garut dapat beradaptasi terhadap kondisi ketinggian tempat dan suhu udara di Hutan Pendidikan Gunung Walat, akan tetapi curah hujan dan kelembaban udara di Hutan Pendidikan Gunung Walat relatif lebih tinggi dibandingkan dengan curah hujan dan kelembaban udara optimal pemeliharaan Kambing Etawa dan Domba Garut. Senyawa berbahaya yang dihasilkan dari limbah ternak kegiatan silvopastural, yaitu ammonium, hydrogen sulfida, CO2, dan CH4., Silvopastural is a combination of tree and pet management as a mutually sustainable system with double yields on the same land. The abundant resources of the Mount Walat Educational Forest (HPGW) and the livestock sector that has increased in terms of demand are potential that can be developed. This study aims to identify silvopastural potential and analyze business feasibility based on economic, social, and ecological aspects. The methods used are Process Hierarchy Analysis (AHP), Financial Analysis with Break Even Point (BEP), Net Present Value (NPV), Benefit Cost Ratio (BCR), and Internal Rate of Return (IRR) criteria, as well as Ecological Analysis with criteria for environmental conditions and hazardous compounds of livestock waste. The results of this study found that the silvopastural potential based on AHP calculations, is the business of Brahman Cattle as the first choice, Etawa Goats the second choice, Garut Sheep the third choice, and Friesien Holstein Cattle the fourth choice. The financial aspect shows that the Brahman Cattle, Friesein Holstein Cattle, and Etawa Goats businesses are viable to run and the Garut Sheep business is not feasible to run. The social aspect shows that silvopastural businesses can create jobs by absorbing 5-10 people and become an additional source of income of IDR 3,064,218.08. The ecological aspect shows that Brahman Cattle and Holstein Friesein Cattle
Keyword: Silvopatural, Aspek Finansial, Aspek Sosial, Aspek Ekologi, Silvopasture, Financial Aspects, Social Aspects, Ecological Aspects

Judul: Feasibility Study of S3FMU based Agrosilvopastoral on Critical Land in BKPH Parung Panjang KPH Bogor
Abstrak: Lahan kritis merupakan wilayah yang mengalami penurunan atau kehilangan fungsi ekologisnya akibat dari kerusakan secara fisik, kimia, dan biologi. Terdapat lahan kritis di Bagian Kesatuan Pemangkuan Hutan (BKPH) Parung Panjang yang memiliki potensi untuk dikembangkan menjadi sebuah usaha agrosilvopastural dengan menerapkan konsep Smart Small Scale Forest Management Unit (S3FMU) pada pengelolaannya. Penelitian ini bertujuan untuk mengidentifikasi potensi pengembangan usaha agrosilvopastural dengan menerapkan konsep S3FMU pada pengelolaannya, serta menganalisis kelayakan finansial, sosial, dan ekologi usaha agrosilvopastural di BKPH Parung Panjang. Metode pada penelitian ini adalah Analytical Hierarchy Process (AHP) untuk menentukan komoditas jenis sapi perah dan jenis Multy Purpose Tree Species (MPTS) pada usaha agrosilvopastural. Usaha agrosilvopastural ini mencakup agroforestri buah naga dengan MPTS rambutan, peternakan sapi perah dengan jenis sapi holstein friesian, dan wisata petik buah naga dan sapi perah. Usaha agrosilvopastural ini memiliki NPV mencapai Rp63.627.320.477,13 nilai BCR 1,97 dan IRR mencapai 26,45% serta payback period 5,2 tahun., Critical land is an area that has experienced a decline or loss of its ecological function due to physical, chemical, and biological damage. There is critical land in the Parung Panjang Forest Management Unit (BKPH) that has the potential to be developed into an agrosilvopastoral business by applying the Smart Small Scale Forest Management Unit (S3FMU) concept to its management. This study aims to identify the potential for developing an agrosilvopastoral business by applying the S3FMU concept to its management, as well as to analyze the financial, social, and ecological feasibility of an agrosilvopastoral business in BKPH Parung Panjang. The method in this study is Analytical Hierarchy Process (AHP) to determine the type of dairy cow and type of Multy Purpose Tree Species (MPTS) in the agrosilvopastoral business. This agrosilvopastoral business includes dragon fruit agroforestry with rambutan MPTS, dairy farming with Holstein Friesian cows, and dragon fruit and dairy cow picking tourism. This agrosilvopastoral business has an NPV of Rp63,627,320,477.13, a BCR value of 1.97, an IRR of 26.45%, and a payback period of 5.2 years.
Keyword: Analytical Hierarchy Process (AHP), lahan kritis, S3FMU, Agrosilvopastural, Kelayakan Usaha

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4