Judul: Pola Ekologi Owa Jawa Liar (Hylobates moloch) di Pulau Jawa, Indonesia: Efek Faktor Lingkungan
Abstrak: The geographical (latitude, longitude, and altitude) and environmental variables (rainfall and temperature) would be important constraints on forest structure, food abundance, other resources’ distribution and availability. These can affect dietary habits, behavior, and dayly travel distance. This study aims to examine environmental determinant(s) of behavioral and social aspects of Javan gibbons through meta-analysis. This study compiled previous publications about gibbons through database searching. Employed statistical analyses were Spearman’s rank correlation and Kruskal-Wallis tests. The results showed that there were no significant correlations between geographical/environmental variables and behavioral/social aspects, except for relationship with latitude and number of animals per group. This study also found no significant differences in behavioral/social aspects among forest types.
Keyword: Activity budget, dietary composition, forest types, gibbons, latitude, Activity budget, dietary composition, forest types, gibbons, latitude

Judul: Faktor-Faktor yang Memengarahui Perubahan Perilaku Owa Jawa (Hylobates moloch, Audebert 1798) di Taman Margasatwa Ragunan Jakarta
Abstrak: Javan gibbon (Hylobates moloch Audebert, 1798) is one of the animals with Endangered conservation status according to the IUCN. One of the conservation activities at the Schmutzer Primate Center, Ragunan Wildlife Park, is breeding the Javan gibbon. the Covid-19 pandemic was an event that affected the behavior of the Javan gibbon but there is no data on the behavior of the Javan gibbon after the pandemic ended. The purpose of this study was to describe the behavior of the Javan gibbon after the Covid-19 pandemic, to identify differences in the behavior of the Javan gibbon during and after the Covid-19 pandemic, as well as the factors that influenced the behavior of these animals. The research was conducted from January to March 2023 at TMR. Behavioral data collection method with instantaneous scan sampling. The results data obtained after the Covid-19 pandemic showed 3 new behaviors during the post-Covid-19 pandemic: shelter-seeking, agonistic and sex. The frequency of moving behavior after the Covid-19 pandemic had the highest percentage, while during the Covid-19 pandemic, the behavior of resting had the greatest frequency. Factors that influence the behavior of the Javan gibbon include the size of the cage, the weather, and the presence of visitors.
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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