Judul: Keanekaragaman dan Pola Sebaran Spesies Tumbuhan Asing Invasif di Resort Gunung Butak Taman Nasional Gunung Halimun Salak
Abstrak: dapat hidup serta berkembang di luar habitat alaminya dan dapat mendominasi suatu habitat. Penelitian ini bertujuan mengindentifikasi keanekaragaman spesies tumbuhan asing invasif dan pola sebaran spesies tumbuhan asing invasif di Resort Gunung Butak Taman Nasional Gunung Halimun Salak. Metode yang digunakan adalah metode analisis vegetasi kombinasi jalur berpetak pada hutan dan analisis petak ganda pada savana. Tumbuhan asing invasif di Resort Gunung Butak Taman Nasional Gunung Halimun Salak yang teridentifikasi sebanyak 24 spesies dari 12 famili yaitu Achmella paniculata, Ageratum conyzoides, Axonopus compressus, Bellucia axinanthera, Calliandra calothyrsus, Centella asiatica, Chromolaena odorata, Clidemia hirta, Commelina diffusa, Crassocephalum crepidioides, Ipomea cairica, Lantana camara, Maesopsis eminii, Melastoma malabathricum, Mikania micrantha, Mimosa pudica, Musa acuminata, Paspalum conjugatum, Piper aduncum, Solanum torvum, Stachytarpheta indica, Tihtonia diversifolia, Imperata cylindrica, dan Sphagneticola trilobata.
Keyword: pola sebaran, resort gunung butak, tumbuhan asing invasif

Judul: Keanekaragaman Spesies Tumbuhan Asing Invasif di Resort Ranu Pani Taman Nasional Bromo Tengger Semeru
Abstrak: Invasive Alien Species (IAS) is species of flora or fauna, including the microorganisms that live out of the native habitat. The IAS are growing rapidly cause it doesn’t has natural enemy, therefore it becoming weeds, pests, and diseases on native species. This study conducted on forest and savanna in Ranu Pani Resort. Vegetation analysis in the forest was using combination of strip and line quadrat method. Five species of IAS that belong into 3 families are identified based on analysis result. Vegetation analysis in savanna was using quadrat method, and the result is 2 species of IAS was identified which is also found in the forest. Seven invasive species identified in this study and the result from Morishita index showed that 5 species has a clumped distribution patterns, there are Acacia decurrens, Ageratina riparia, Austroeupatorium inulifolium, Imperata cylindrica, and Tithonia diversifolia. Furthermore, the exploration result is 2 species of IAS has found, there are Ricinus communis and Lantana camara.
Keyword: 

Judul: Sintesis dan Pencirian Membran Komposit Polistirena Tersulfonasi-Zeolit untuk Aplikasi Direct Methanol Fuel Cell
Abstrak: This study focused on synthesis and characterization of sulfonated polystyrene (SPS)-zeolit composite membrane as a proton exchange membrane for direct methanol fuel cell (DMFC). Sulfonation of polistyrene was done by using SO3 gas from oleum at 60 oC. The composite membrane was then synthesized with zeolite composition variation of 3%, 5%, and 7%. The success of the sulfonation process was indicated by the highest degree of sulfonation of PSS membrane with 15% concentration of polystyrene, that was 99.93%. The PSS Fourier transform infrared spectra of the composite membranes showed sulfonate group (-SO3) at 910.44 cm-1 and O-Si-O at 1091 cm-1. Topography study by using atomatic force microscope showed that the sulfonate groups of PSS were covered by the zeolite. The highest water uptake, proton conductivity, and potential difference were showed by the composite membrane with 5% of zeolite, that were 10.17%, 2.0339 10-6 S/cm, dan 15 mV respectively, showing that the PSS membrane can be applied in DMFC system.
Keyword: zeolite, sulfonation, polystyrene, DMFC, composite