Judul: Pengelolaan Lanskap Habitat Musim Dingin Sikep Madu Asia (Pernis ptilorhynchus) Berbasis Satellite Tracking di Kawasan Talaga Bodas, Jawa Barat
Abstrak: Oriental Honey Buzzard (OHB) (Pernis ptilorhynchus) is one of migratory raptor that had been satellite-tracked since 2003. One of area which chosen by OHB was Talaga Bodas, placed in West Java. The objectives of this study were to identify and to compare the core and edge landscape characteristics of OHB‟s winter habitat in West Java, to compare characteristics of OHB‟s winter habitat in West Java with South Kalimantan, and to obtain the landscape management plan of OHB‟s winter habitat in Talaga Bodas area. Principal Component Analysis (PCA) combined with Geographical Information System (GIS) was used to identify and to compare the landscape characteristics. The results of this study were defined by twelve principal components (PCs) and eleven PCs, which were explained by 76% and 76,3% of the data variance in landscape characteristics of core and edge habitats respectively. The basic characteristics of core and edge ii habitats in West Java were related to the nearest distance by semi-plain area (3-8 % slope), the nearest distance by open land, and the nearest distance by paddy field. The difference of core and edge habitats in West Java and South Kalimantan was the conservation areas, where conservation areas of South Kalimantan placed in core habitat, whereas conservation areas of West Java area placed in edge habitat. Landscape management of winter habitat based on period (short and long term) was planned, and the ecotourism based on raptor migration was developed in Talaga Bodas area.
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Judul: Pengelolaan Lanskap Habitat Musim Dingin Sikep Madu Asia (Pernis ptylorhynchus) Berbasis Satellite Tracking Di Kalimantan Tengah
Abstrak: Knowledge about landscape characteristic of oriental honey buzzard (OHB) in the context of wintering habitat is a prerequisite for understanding their wintering as well as managing their habitats. This study intends to identify landscape characteristic of wintering habitat of OHB (core and edge habitat) in Central Kalimantan and to recommend management plan of wintering landscape habitat of OHB in Central Kalimantan. Geospatial Information System (GIS) combined with Principal Component Analysis (PCA) was used for analyzing several environmental variables in order to identify the characteristic in both core and edge habitats. Nine principal components (PCs) were retained and explained by 78,7% and 77,9% of the data variance in landscape characteristic of core and edge habitat, respectively. T-Student test method was used to compare environmental variables between core and edge habitat and also to compare with previous study in South Kalimantan, then the result was significantly different. Management of wintering habitat can be planed within a certain period (short term and long term) and specific location (core and edge habitat).
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Judul: Katalis Zink Ferit Tersubstitusi Cu untuk Oksidasi Benzil Alkohol
Abstrak: Katalis berperan dalam menurunkan energi aktivasi. Katalis ZnFe2O4 dan ZnFe2O4 tersubstitusi Cu disintesis menggunakan metode kopresipitasi untuk digunakan dalam oksidasi benzil alkohol. Katalis dicirikan dengan spektrofotometer inframerah (FTIR) dan difraktometer sinar-X. Spektrum FTIR menunjukkan puncak serapan dari ikatan Zn-O dan Fe-O masing-masing pada rentang 559‒575 cm-1 dan 419‒447 cm-1. Difraktogram menunjukkan terbentuknya fase tunggal Zn0.6Cu0.4Fe2O4 pada katalis ZnFe2O4 tersubstitusi Cu 20%. Benzil alkohol dioksidasi dengan sistem refluks. Konversi benzil alkohol meningkat dengan meningkatnya suhu. Kadar benzaldehida yang dihasilkan dengan katalis ZnFe2O4 tersubstitusi Cu 20% lebih tinggi dibandingkan dengan katalis ZnFe2O4 yang tidak tersubstitusi dan yang tersubstitusi Cu 60 dan 80%. Hal tersebut menunjukkan bahwa katalis ZnFe2O4 tersubstitusi Cu 20% memiliki kinerja yang lebih baik dalam oksidasi benzil alkohol menjadi benzaldehida dengan kadar benzaldehida 8.763%.
Keyword: Benzil alkohol, katalis, oksidasi, ZnFe2O4