Judul: Forest Carbon Storage Estimation at the Top of Mahogany (Swietenia macrophylla) at Plot 30 BKPH Pandeglang
Abstrak: BKPH Pandeglang merupakan salah satu dari 8 Bagian Kesatuan Pemangkuan Hutan (BKPH) yang berada di KPH Banten. Nilai karbon hutan yang didapat dari setiap daerah umumnya bebeda-beda. Penelitian ini bertujuan untuk menghitung potensi simpanan karbon di atas permukaan tanah pada Petak 30 BKPH Pandeglang serta menganalisis kesesuaian lingkungan tumbuh terhadap pertumbuhan tegakan mahoni. Hasil penelitian menunjukkan nilai rata-rata biomassa bagian atas tegakan mahoni di Petak 30 BKPH Pandeglang sebesar 335,18 ton/ha sehingga nilai simpanan karbon yang didapat sebesar 157,53 ton/ha. Nilai biomassa dan karbon dipengaruhi oleh kerapatan vegetasi dan juga kondisi lingkungan dari tempat tumbuhnya. Kondisi lingkungan penelitian memiliki kesesuaian untuk tempat tumbuh mahoni yaitu dengan suhu berkisar antara 21-24˚C, curah hujan 1780 mm/tahun dan ketinggian tempat 1400 mdpl. Kondisi lingkungan yang cocok sebagai tempat tumbuh mahoni ini yang menjadi salah satu penyebab nilai biomassa dan simpanan karbon yang didapatkan tinggi., BKPH Pandeglang is one of 8 Forest Management Units (BKPH) located in KPH Banten. Forest carbon values obtained from each region are generally different. The study aimed to calculate the carbon storage potential of the upper part of mahogany stands in Plot 30 BKPH Pandeglang and analyze the suitability of the growing environment for the growth of mahogany stands. The results showed that the average value of biomass at the top of mahogany stands in Plot 30 BKPH Pandeglang was 335.18 tons/ha so that the carbon storage value obtained was 157.53 tons/ha. The value of biomass and carbon is influenced by the density of vegetation and also the environmental conditions of the place where it grows. The environmental conditions of the study are suitable for growing mahogany with an around temperature of 21-24˚C, rainfall of 1780 mm/year and an altitude of 1400 meters above sea level. This suitable environmental condition as a place to grow mahogany is one of the causes of the high biomass and carbon storage values obtained.
Keyword: biomass, BKPH Pandeglang, carbon storage, environmental conditions, mahogany

Judul: Pendugaan potensi simpanan karbon pada tegakan Pinus (Pinus merkusii Jungh. et de Vriese) di KPH Cianjur, Perum Perhutani Unit III Jawa Barat dan Banten
Abstrak: Global warming is one of the major environmental issues that currently concern to the various parties. Because of global warming, increasing in average temperature of earth's sea and land caused by industrial activity and reduction of forest cover due to deforestation, especially lately. Based on these evolving issues and considering the importance of the role of forests in absorbing carbon from the air and store it in forest biomass, it is necessary a lot of research that could encourage the continued development of carbon in biomass. One important aspect of research is to know the potential of carbon stored in the stands of pine. The experiment was conducted in KPH Cianjur, Perum Perhutani Unit III West Java and Banten in April 2010 to May 2010. Materials used in this research were planting stands of pine in 1994 on square 27A RPH West Hanjawar BKPH South Sukanagara and planted stands of Pine year 1995 on square 48I RPH East Hanjawar BKPH North Sukanagara in KPH Cianjur, Perum Perhutani Unit III West Java and Banten. The tools used in this study include scales, digital scales, ovens, machete, newsprint, chalk, plastic bags, plastic rope, stationery, tally sheets, calculator, tape measure, camera, and software SAS. In the area of stands are made each 5 plots with a size of 20 m x 20 m to measure the trees and also made small plots measuring 2 m x 2 m by 4 pieces located at each corner for analysis and retrieval of vegetation and litter. Results obtained from these data are processed through the approach of biomass which is then converted to carbon savings in ton/ha. To know the factors that influence the use of carbon deposits by using ANOVA analysis and Duncan Multiple Range Test (DMRT). The results showed that the potential of carbon storage on plots planted in 1995 is 77,1580 ton/ha greater than the potential carbon storage on plots planted in 1994 which only amounted to 64,6372 ton/ha. The test results using ANOVA statistical analysis showed the value of R-Sq = 96,01% and significant level 5%, there is a difference between the carbon potential on one of the object variabel (tree, manure, below plant) which is found on the stands of pine planted in 1994 and stands pine planting in 1995, where the variable is a tree. There needs to be further research on the estimation of carbon stock potential using a different method of harvesting method with the same kind of pine stands.
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Judul: Desain Sistem Transfer Energi Nirkabel Berbasiskan Tesla Coil
Abstrak: Tesla coil merupakan alat yang ditemukan oleh Nikola Tesla yang dapat mentransmisikan daya tanpa kabel dengan memanfaatkan prinsip induksi elektromagnetik. Pada penelitian ini dibuat sebuah prototype Tesla Coil dengan menggunakan transistor C1970 dan receiver menggunakan rangkaian LC. Identifikasi alat meliputi pengaruh daya input transmitter terhadap receiver, bentuk signal yang dipancarkan transmitter, pengaruh jarak transmitter dan receiver, nilai efisiensi serta efek alat terhadap perangkat lain. Hasil pengamatan menunjukkan bahwa semakin besar daya input maka semakin besar daya yang dipancarkan oleh transmitter. Bentuk sinyal yang dipancarkan oleh transmitter berupa gelombang listrik AC sinusoidal dengan frekuensi ~2.9 MHz. Semakin jauh jarak receiver terhadap transmitter maka semakin kecil amplitudo gelombang AC yang diterima oleh receiver, menyebabkan semakin kecil daya yang diterima oleh receiver. Adapun nilai efisiensi terbesar penangkapan daya oleh receiver yaitu sebesar 0.00516 % serta terdapat gangguan pada alat-alat tertentu seperti monitor komputer dan radio.
Keyword: rangkaian LC, receiver, tesla coil, transistor C1970, transmitter