Judul: Populasi dan Habitat Lutung Jawa (Tracyphitecus auratus E. Geoffrey 1812) di Resort Balanan, Taman Nasional Baluran.
Abstrak: Baluran National Park is a one of the habitat used by javan langur. The aims of this research were to get the actual condition of population, habitat and to describe the characteristics of habitat used by Javan langur especially in Balanan Resort, Baluran National Park. Field observation had been done in March to April 2014. Population of javan langur was estimated using Concentration Count Method. Influence of biotic factor, including vegetation as their feeds and cover as well as abiotic factor including altitude, slope, distance from river, distance from disturbance (road and villages) were analyzed by using Principal Component Analysis (PCA). Result showed that there were 6 groups consisted 93 individuals, with average size 15,5 ± 5,381. Factors that contributed to the existence of javan langur could be summarized into four (4) component, which represented biotic factors namely regeneration vegetations, and climax vegetations, and abiotic factors as well as physics factors of vegetations.
Keyword: abiotic, biotic, habitat, javan langur, population

Judul: Population Distribution and Exploration Area of Javan Langur (Trachypithecus auratus) at Cimande Resort, Gunung Gede Pangrango National Park
Abstrak: Lutung jawa (Trachypithecus auratus) merupakan salah satu primata endemik Pulau Jawa yang dilindungi. Sedikitnya data mengenai lutung jawa menjadikan penelitian ini penting untuk dilakukan. Penelitian ini bertujuan mengidentifikasi sebaran populasi dan mengukur wilayah jelajah lutung jawa di Resor Cimande, Taman Nasional Gunung Gede Pangrango serta mengetahui faktor yang memengaruhi pergerakannya. Pengumpulan data dilakukan dengan metode eksplorasi serta penandaan pada Global Positioning System (GPS) dan Avenza Maps lalu diolah dan dipetakan dengan ArcMap 10.8. Populasi lutung jawa di Resort Cimande ditemui 10 kelompok pada 4 blok hutan yang berbeda dengan estimasi total populasi sebanyak 52 individu, jumlah individu per kelompok terdiri dari 1-9 individu, kepadatan populasi lutung jawa 0,33 ind/ha, nisbah kelamin adalah 1:2, dan persentase struktur umur menurun (piramida terbalik). Wilayah jelajah lutung jawa di Resort Cimande berkisar 2,45 - 21,75 ha. Faktor biotik yang memengaruhi pergerakan lutung adalah ketersediaan pohon pakan, keberadaan manusia dan satwa lain terutama primata. Faktor abiotik yang paling memengaruhi pergerakan lutung adalah curah hujan., Javan langur (Trachypithecus auratus) is one of the endemic primates of Java Island that is protected. The lack of data about Javan langurs makes this research important. This research aims to identify the population distribution and measure the home range of the Javan Langur in Cimande Resort, Gunung Gede Pangrango National Park and to determine the factors that influence its movement. Data collection was carried out using the exploration method and marking on the Global Positioning System (GPS) and Avenza Maps, then processed and mapped with ArcMap 10.8. The Javan langur population in Cimande Resort was found in 10 groups in 4 different forest blocks with an estimated total population of 52 individuals, the number of individuals per group consisted of 1-9 individuals, the population density of Javan langurs was 0.33 ind/ha, the sex ratio was 1:2, and the percentage of age structure was decreasing (inverted pyramid). The home range of the Javan Langur in Cimande Resort ranged from 2.45 - 21.75 ha. Biotic factors that influence langur movement were the availability of food trees, the presence of humans and other animals, especially primates. The abiotic factor that most influences langur movement was rainfall.
Keyword: home range, javan langur, population distribution

Judul: Membran Komposit Kitosan-Zeolit untuk Aplikasi Direct Methanol Fuel Cell
Abstrak: Direct methanol fuel cell (DMFC) is a fuel cell that utilize methanol as the fuel source. The electrolyte membrane used in the DMFC system in this research was chitosan-zeolite composite membrane. The composite membrane was synthesized with chitosan-zeolite composition variation of 1:1, 1:2, 1:3, and 2:1. The membranes were analyzed by Fourier transform infrared spectrophotometer (FTIR) and scanning electron microscope, and for the specific gravity. Membrane performances were tested with methanol uptake, methanol permeability, conductivity, and potential difference in the DMFC system. The FTIR spectrum showed no formation of new functional groups inducating that the composite membrane was a result of physical mixing. Morphological analysis showed that the membrane was nonporous. Chitosan-zeolite 1:3 composite membrane had the highest specific gravity and methanol uptake, 1.4226 g/mL and 41.44%, respectively. The highest proton conductivity was showed by the 1:2 chitosanzeolite composite membrane, namely 7.2946× 10-7 S/cm. Based on this research results, chitosan-zeolite composite membrane can be applied in DMFC system.
Keyword: