Judul: Potential Biomass, Carbon and CO2 Emissions on Necromass in Gunung Walat Educational Forest, Sukabumi Regency
Abstrak: Nekromassa merupakan bagian dari pohon yang telah mati baik yang masih berdiri tegak ataupun telah tumbang dan terletak di permukaan tanah. Potensi tegakan yang berada di Hutan Pendidikan Gunung Walat sangat beragam yang didominasi oleh tumbuhan berkayu dengan umur tegakan yang relatif tua. Pohon dengan diameter >30 cm dapat memberikan sumbangan yang cukup tinggi terhadap total biomassa pohon. Penelitian ini bertujuan mengetahui potensi biomassa, simpanan karbon dan emisi CO2 pada nekromassa. Teknik pengambilan data menggunakan metode simple random sampling. Plot contoh yang digunakan berbentuk persegi panjang dengan ukuran plot (20 m x 30 m) sebanyak 83 plot yang terbagi menjadi dua sub plot yaitu sub plot A (20 m x 30 m) untuk pengukuran kayu mati sedangkan sub plot B (20 m x 20 m) untuk pengukuran pohon mati. Pengambilan data di laboratorium dengan mengoven kayu mati pada suhu 105°C selama 24 jam. Hasil penelitian menunjukkan bahwa rata-rata potensi biomassa, karbon, dan emisi CO2 pada nekromassa berturut-turut yaitu sebesar 3,362 ton/ha, 1,543 ton/ha, dan 5,769 ton CO2/ha., Necromass is part of dead tree that is either still standing upright or has fallen and located on the ground. The potential of stands in Gunung Walat Educational Forest is very diverse, which is dominated by woody plants with relatively old stands. Trees with a diameter >30 cm can provide a high enough contribution to total tree biomass. This study aims to determine the potential of biomass, carbon storage and CO2 emissions in necromass. Data collection technique used simple random sampling method. The sample plot used is rectangular with plot size (20 m x 30 m) as many as 83 plots, which is divided into two sub plots, namely sub plot A (20 m x 30 m) for measuring dead wood while sub plot B (20 m x 20 m) for measuring dead tree. Data were collected in the laboratory by roasting dead wood at a temperature of 105°C for 24 hours. The results showed that the average potential for biomass, carbon, and CO2 emissions in necromass was 3,362 tons/ha, 1,543 tons/ha, and 5,769 tons CO2/ha.
Keyword: biomass, carbon, CO2 emissions, Gunung Walat, necromass

Judul: Estimation of Potential Biomass, Carbon, and CO2 Absorption in Six Types of Stands in Gunung Walat Educational Forest, Sukabumi
Abstrak: Forest is an area that is mainly overgrown with trees and other woody plants that occupy a fairly large area. Forests play an important role as carbon stores and absorbers of carbon dioxide (CO2) where the biomass of trees and forest vegetation contains very large carbon stocks. This study aims to estimate the potential for biomass, carbon stocks, and to determine the potential for CO2 uptake in six stands in the Gunung Walat Educational Forest (HPGW), Sukabumi, West Java. Field data were collected on stands of Acacia (Acacia sp.), Gamal (Gliricidia sp.), Mahogany (Swietenia macrophylla), Pinus (Pinus sp.), Sengon (Albizia chinensis), Sonokeling (Dalbergia latifolia). The sample plots are 83 square plots with a plot size of (20 x 20) m for trees with subplots (10 x 10) m for poles, (5 x 5) m for saplings, and (2 x 2) m for seedlings. Estimation of biomass value using allometric equations. The results of the study showed the total biomass value of acacia 15,03 tons ha-¹, gamal 1.057,76 tons ha-¹, mahogany 586,50 tons ha-¹, pine 15782,31 tons ha-¹, sengon 0,03 tons ha-¹, sonokeling 8,14 tons ha-¹. Total carbon stock of acacia 7,06 tons ha-¹, gamal 519,58 tons ha-¹, mahogany 275,66 tons ha-¹, pinus 7.417,69 tons ha-¹, sengon 0,00 tons ha-¹, sonokeling 3,82 tons ha-¹. Total CO2 absorption acacia 25,92 tons ha-¹, gamal 1824,53 tons ha-¹, mahogany 1.011,66 tons ha-¹, pine 27.222,91 tons ha-¹, sengon 0,02 tons ha-¹, sonokeling 14,04 tons ha-¹.
Keyword: Biomass, carbon, carbon dioxide, education forest, HPGW, Biomass, carbon, carbon dioxide, education forest, HPGW

Judul: Deteksi Imunoglobulin Y Pada Telur Asin Anti Diare Dan Flu Burung Dengan Metode Agar Gel Precipitation Test (AGPT) Dan Hemagglutination Inhibition Test (Hi Test)
Abstrak: This study was conducted to detect specific IgY (anti Enteropathogenic Escherichia coli (EPEC), anti Salmonella Enteritidis, and anti Avian Influenza Virus H5N1) in salted egg. The laying hens were vaccinated with EPEC and Salmonella Enteritidis inactive-vaccine and AI H5N1 vaccine (IPB-Shigeta). Nine eggs were salted by NaCl solution (1:2). The eggs were salted by three times of long-term salting (10 days, 15 days, and 20 days). The IgY was detected using AGPT and haemagglutination inhibition (HI) test. The AGPT result showed that specific IgY of EPEC and Salmonella Enteritidis detected at 10 days and 15 days long-term salting. The mean titer of anti AI-IgY (over 24) was detected using by HI at all long-term salting. In conclusion, salted egg yolk still have specific IgY which is potential for production functional salted egg.
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