Judul: Analisis administrasi program gerakan nasional rehabilitasi hutan dan lahan (GNRHL/ Gerhan)
Abstrak: Program Gerakan Nasional Rehabilitasi Hutan dan Lahan (GNRHL/ Gerhan) merupakan salah satu upaya pemerintah untuk mengatasi kerusakan hutan dan lahan yang terjadi di Indonesia. Program tersebut merupakan gerakan rehabilitasi yang melibatkan banyak pihak dalam pelaksanaannya. Pihak yang terlibat terdiri dari Pemerintah Pusat, Pemerintah Daerah, LSM, instansi terkait, dan masyarakat. Meski telah melibatkan banyak pihak, namun tujuan dari program tersebut untuk merehabilitasi hutan dan lahan belum sepenuhnya terlaksana. Untuk itu diperlukan analisis terhadap program tersebut.
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Judul: Performance Analysis of National Forest and Land Rehabilitation Movement (GERHAN) in Ambon
Abstrak: Critical land areas increasing vast by year accros Indonesia because of forest and land degradation. Those phenomenon and its negative impact also happened in the Province of Moluccas. Critical land occupied 59.24% from the total area of Moluccas. Due to this situation, since 2004 Indonesian Ministry of Forestry made Moluccas as one of the priority target for GERHAN. This study aimed to analyze the technical, sosioeconomics, and institutional aspect of GERHAN, analyze factors that cause fluctuations on GERHAN achievment, and formulate a stategic recomendations for the future implementation of forest and land rehabilitation. The study used an evaluation approach by comparing the implementation of GERHAN at Moluccas with a standard performances for GERHAN setting up by Indonesian Ministry of Forestry. Study result showed that GERHAN were carried out on three types of tenure, wich is private land, clans land, and state forest area. The community whose join the program generally did not understand the technical aspect, especially in the planning stages. From financial point of view referring to the analysis of BCR, NPV, and IRR, using 15% interest rate and 30 years as a program period, GERHAN are feasible on all typologies, with first typology as an exception. The failure of investment in GERHAN mainly caused by forest fire and without any involvement from the local institutions. The farmer institusion is ad hoc and not permanent.
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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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