Judul: Diversity of tree species as sun bear food in conservation area of PT. RAPP Meranti Estate, Riau
Abstrak: Beruang madu termasuk salah satu spesies langka yang ada di Sumatera dan Kalimantan. Areal konservasi PT. RAPP Estate Meranti merupakan habitat beruang madu di Riau, Sumatera. Informasi keanekaragaman jenis pohon pakan beruang madu di areal konservasi PT. RAPP Estate Meranti sampai saat ini belum tersedia. Informasi tersebut dapat dijadikan acuan pengelolaan habitat beruang madu untuk mencegah kurangnya ketersediaan pakan beruang madu.
Keyword: conservation area, distribution pattern, environment factor, tree species as sun bear food

Judul: Population Size and Spatial Distribution of Activity Tracks of Sun Bears (Helarctos malayanus, Raffles 1821) at the PBPH Area of PT Telaga Mas Kalimantan
Abstrak: Informasi tentang ukuran populasi dan sebaran yang menentukan keberadaan beruang madu diperlukan oleh PT. TMK sebagai salah satu bahan pertimbangan dalam merumuskan strategi konservasi keanekaragaman hayati khususnya beruang madu. Penelitian ini bertujuan untuk mengidentifikasi ukuran populasi dan sebaran spasial jejak aktivitas beruang madu serta hubungannya dengan karakteristik habitat di areal kawasan. Data dikumpulkan menggunakan metode album melalui camera trap, pengamatan jejak aktivitas dengan transek jalur dan analisis vegetasi. Data dianalisis ukuran populasi dengan menentukan jumlah individu yang teridentifikasi, menentukan sebaran jejak aktivitas secara spasial untuk menentukan pola sebaran, serta uji chi-square untuk menentukan hubungan antara sebaran jejak aktivitas beruang madu dengan karakteristik habitat. Berdasarkan hasil camera trap ukuran populasi didapatkan enam individu beruang madu dengan data persebaran 27 jejak aktivitas yang meliputi 26 cakaran dan satu bongkahan, tersebar secara mengelompok yang dipengaruhi oleh jarak dari sumber air dan kerapatan vegetasi pada tingkat pertumbuhan tiang., Information on population size and distribution that determine the presence of sun bears is needed by PT TMK as one of the considerations in formulating biodiversity conservation strategies, especially sun bears.. This study aims to identify the population size and spatial distribution of sun bear activity tracks and their relationship with habitat characteristics in the area. Data were collected using the album method through camera traps, observation of activity tracks with transect lines and vegetation analysis. Data were analyzed for population size by determining the number of individuals identified, determining the distribution of activity traces by spatial and morisita index, and chi-square test to determine the relationship between the distribution of sun bear activity traces and habitat characteristics. Based on the results of the camera trap population size, six sun bears were found with distribution data of 27 activity traces including 26 scratches and one chunk, scattered in groups influenced by distance from water sources and vegetation density at the pole growth level.
Keyword: Activity trace, habitat characteristics,, population size, spatial distribution, sun bear

Judul: The Isolation of Silver (Ag) from Fixer Sludge with Electrolysis methode
Abstrak: with the variations concentration, electrode of carbon, and voltages. The aim of research are looking for the easiest and eficient electrolysis. Among of 272.79 ppm of silver (impurities) could be produced from electrolysis fixer which used 300 times maintain the film. For 400, 500, and 600 times electrolysis were produced recently 49.42, 137.04, and 55.22 ppm. Futhermore, it was increased to 220.00 ppm from 700 times. These were possible because of density the solutions. From the electrode of carbon, 68.2222 g Ag (impurities) could be processed from size 14 cm x 3 cm x 3 cm. The next results 41.2050 g and 43.7559 g from the sizes 16 cm x 3 cm x 3 cm and 18 cm x 3 cm x 3 cm. The reasoned of this part any faster reaction on the most litle electrode. By the way, from voltages variation, the processed showed that 47.4575 g of Ag (impurities) could be produced from 11 volt. It’s caused the bigest voltages are also the bigest kinetics power on the reactions. Sampel and product were analized by AAS. Consentration has potential to be indicator, because of the used 700 times was given trend high Ag (impurities) became increase optimally at 11 volt, and much sediment that is 47.4575 g. The best rendemen is 13.33%. The other finding is that the strength of the time and the voltages strongly enfluence the electrolysis shown by the bigger result on F(calculation) than that of the F(table).
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