Judul: Keanekaragaman Cacing Tanah pada Tipe Habitat dan Ketinggian Tempat yang Berbeda
Abstrak: A research on earthworm diversity was conducted on three types of habitats, the abandoned land, rice fields and horticultural plantations at different heights of Bogor and Bekasi. This study aims to determine earthworm diversity in different habitat and heights. A quadrat measuring 30x30 cm2 was used in 5x5 m2 plot in collecting the earthworm. Ten species of earthworms were obtained in the Bogor region, namely Metaphire houlleti, Pontoscolex corethrurus, Perionyx excavatus, Perionyx sp 1, Eudrilus eugeniae, Dichogaster sp., Glyphidrilus sp., and three unidentified species. Earthworms obtained in Bekasi were also of 10 species, namely Amynthas Agrestis, Metaphire houlleti, Pontoscolex corethrurus, Perionyx excavatus, Perionyx sp 2, Polypheretima elongata, Glyphidrilus sp., and three unidentified species. The highest diversity was in the horticultural plantations (H '= 0.65) for Bogor area. The horticultural plantation in Bogor region also has the highest uniformity index value (E = 0.80), and has the lowest value of Simpson's dominance index (C = 0.56).
Keyword: Bogor Agricultural University (IPB), habitat type, diversity, earthworms

Judul: Peranan Cacing Tanah sebagai Bioindikator Kesuburan Tanah pada Berbagai Tipe Tutupan Lahan di Dramaga Bogor
Abstrak: Rapid population growth accompanied by improved quality of life for the better cause of human dependence on natural resources increases. In a natural resource ecosystems, plants have an important role in maintaining the ecological functions of ecosystems natural resources through its ability to regulate micro-climate conditions, water management and soil fertility. Soil fertility is the ability of the soil provides nutrients for plant growth. In this case, the earthworm is one of the terrestrial ecosystem biotic factors that served to increase soil fertility. The role of earthworms are very important for the process of decomposition of soil organic matter significantly affect the soil fertility. Research aims: (1) determine the type of land cover in Dramaga, (2) identify and analyze the various types of plants on land cover, (3) analyzing the fertility of the soil on the following types of land cover history management, (4) identify the type and abundance suspect earthworms as indicators of soil fertility, and (5) examine the relationship of the abundance of earthworms in soil fertility and plant abundance. Research activities carried out in Dramaga, West Bogor District, West Java. The research lasted for 3 (three) months, from February to April 2013. At the study site was the interpretation of Landsat imagery to identify and interpret the land cover type (landuse) at the study site. Then on each type of land cover is an inventory / treatise against three research objects that is plants, earthworms and soil fertility. Sampling design of the study using a two stage sampling. Primary sampling units in the form of squares measuring 20 m x 20 m three units per land cover type plants to the minutes of the tree level. As for the minutes of the level of regeneration is made smaller squares by three squares units each measuring 2 m x 2 m for seedlings, 5 m x 5 m for sapling and 10 m x 10 m for the pole in each primary sampling unit. Being for the benefit of earthworms treatise made secondary sampling unit size of 1 m x 1 m by one unit per primary sampling unit. In this study the identification or interpretation of land cover types is done using ArcGIS 9 software on Landsat imagery in 2012. The analysis of vegetation data (density, frequency, dominance, importance value index) using analysis of vegetation (Misra, 1974) and species diversity are analyzed according to the Shannon-Wiener formula (Krebs, 1978), soil fertility by the Research and Development of the Agriculture Department of Agriculture, 2005 and estimate the abundance of earthworms in each land cover type calculation procedures used by two stage sampling design. Based on the results of processing of Landsat imagery in the study site using ArcGIS 9 software, there are five types of land cover that bare ground, grasses, shrubs, forest plantations, and mixed forest. Results of data acquisition fifth land cover types dominated by species of different plants, namely: Digitaria sanguinalis (L.) in grasses, Waltheria indica (L.) in the bush, in Tectona grandis plantations, as well as Mimosa pudica (undergrowth), Hopea bancana (sapling), Baccaurea racemosa (pole), and
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Judul: Sintesis 1-Kloro-2-metoksi-6-propilnaftalena-1,3-dioksolana (1:1) sebagai Prekursor Asam (S)-(+)-(6-Metoksi-2-naftil)propanoat
Abstrak: Senyawa 1-kloro-2-metoksi-6-propilnaftalena-1,3-dioksolana (1:1) sebagai prekursor asam (S)-(+)-(6-metoksi-2-naftil)propanoat disintesis dari bahan awal 2-metoksinaftalena. Tahapan sintesis diawali dengan klorinasi menggunakan 2 jenis pereaksi klorinasi, yakni isosianurat terklorinasi dan NaOCl. Klorinasi dengan isosianurat terklorinasi berhasil menyintesis 1-kloro-2-metoksinaftalena sebagai produk monoklorinasi melalui pencirian dengan kromatograf gas-spektrometer massa (GC-MS). Nisbah konversi produk paling efisien diperoleh pada laju penambahan 2.5 mmol/jam. Sebaliknya, klorinasi dengan NaOCl menghasilkan produk triklorinasi. 1-Kloro-2-metoksinaftalena selanjutnya diasilasi dengan propanoil klorida, tetapi analisis dengan GC menunjukkan bahwa produk asilasi tidak terbentuk. Sistem bebas-air diperlukan untuk keberhasilan proses asilasi tersebut.
Keyword: isosianurat terklorinasi, NaOCl, nisbah konversi