Judul: Some aspects of biology, ecology and control of Alternanthera philoxeroides (Mart) Griseb and its relevance to plant quaran time
Abstrak: Experiments were conducted to determine the part of alligatorweed (Alternanthera philoxeroides) stem that are capable of producing a complete plant, the growth analysis of alligatorweed, the quantitative description of the alligatorweed, the competing ability of this weed with rice, efficacy study of certain herbicides on this weed and viability study of stem cutting of alligatorweed.
Keyword: Alternanthera philoxeroides, biology, ecology, quarantine

Judul: Study Invasive Alien Insects and Plants Species in Indonesia.
Abstrak: Agricultural Quarantine Agency (AQA) is developing a duty to prevent the entry and spread of invasive alien species in Indonesia. This study was conducted to analyze the potency of alien species listed in quarantine pests, introduction intentionally through import, and introduction unintentionally through contamination of imports plant products to become invasive and quarantine pest, its revenue through import intentionally, and unintentionally income through contamination of plant products imports. This is done to make an inventory of invasive alien species, to know the character of invasive and existence in Indonesia. This study has focus on the species of insects and plants. Data were obtained from the inventory insects and plants listed as quarantine pests, sampling of imported agricultural and forestry products such as seed or non-seed to detect and identify contaminant species, the results AQA interception in 2010-2011, collection of interception at Agricultural Quarantine of Tanjung Priok Sea Port and Soekarno Hatta Air Port, as well as survey of plants to the nursery in Jabodetabek and Karawang. In addition, the data of imported living plants, seeds and non-seeds in 2010-2011 BARANTAN were also analyzed. All data were compared to the list of invasive species in Global Invasive Species Database (GISD). The dentified that were listed in GISD were classified as invasive species, and then were studied their bioecology, historical invasion, and impact. Species that are not included in the list of GISD performed invasive potential of information retrieval. The results showed that 12 species of insects and 3 species of weeds listed in the quarantine pests could be classified as invasive species. Five species as contaminants of imported products were invasive insect species and 37 were found plants. The invasive insects Agrilus sulcicollis and Megacyllene robiniae not exist in Indonesia and are not listed in the quarantine pests and GISD. Five of invasive plants which are not exist in Indonesia were Cirsium vulgare, Cirsium arvense (quarantine pest A1 category), Centaurea melitensis, Lepidium virginicum, and Melilotus albus. Introduction invasive alien plants were imported and the results of survey there are 18 invasive plants species of GISD. One of 18 plants species is known as quarantine pest A2 category (Asystasia gangetica subsp. micrantha). The invasive alien species that do not exist in Indonesia can be used as target material monitoring and revision is a list quarantine pest. Management of invasive species in the pre-border needs to be improved by making the target invasive species inspection, increased expertise of identification, improvement of the quality standards of imported products, and the acceptance of the application of Sanitary and Phytosanitary Measures as well as.
Keyword: insects, plants, alien, invasive, and quarantine

Judul: Membran Komposit Polistirena Tersulfonasi–SiO2 untuk Aplikasi Direct Methanol Fuel Cell
Abstrak: Nafion® merupakan membran elektrolit pada direct methanol fuel cell (DMFC) yang memiliki nilai permeabilitas metanol yang tinggi. Oleh karena itu, membran alternatif seperti polistirena tersulfonasi (PSS) yang ditambahi SiO2 dikembangkan untuk mengurangi tingginya permeabilitas metanol tersebut. Penelitian ini bertujuan menentukan pengaruh tambahan SiO2 pada kinerja PSS. Keberhasilan proses sulfonasi ditunjukkan oleh nilai derajat sulfonasi (DS) dari PSS dengan konsentrasi PS 15% sebesar 81%. Membran komposit dibuat dengan ragam konsentrasi 3%, 5%, dan 7%. Spektrum inframerah transformasi fourier membran komposit menunjukkan gugus sulfonat (-SO3) pada 1008 cm-1 dan O-Si-O pada 1013 cm-1. Nilai konduktivitas proton dan beda potensial tertinggi dihasilkan pada membran PSS-SiO2 3% dengan nilai berturut-turut 2.1 × 10-4 S/cm dan 79 mV. Berdasarkan hasil tersebut, membran komposit PSS-SiO2 dapat diaplikasikan untuk DMFC.
Keyword: membran komposit, SiO2, polistirena tersulfonasi, sel bahan bakar metanol