Judul: Aktivitas Inhibisi Enzim α-Glukosidase dan Antioksidan dari Ekstrak Etanol Daun Wungu (Graptophyllum pictum (L.) Griff) dan Partisinya
Abstrak: Wungu leaves (Graptophyllum pictum (L.) Griff) is a plant that is widely used in treating a variety of ailments, including diabetes and known to contain phenolic compounds that have antioxidant activity. The purpose of this study was to determine the inhibition of the enzyme α-glucosidase and antioxidant activities of ethanol extracts and fractions of diethyl ether, ethyl acetate, and butanol from wungu leaves (Graptophyllum pictum (L.) Griff) by in vitro studies. Extraction of wungu leaves was done by maceration and the fractination was done through liquid-liquid extraction. Results showed that ethanol extracts and its fraction have no inhibitory activity toward α-glucosidase, but it was potentially as antioxidant through inhibition of radical DPPH. Ethyl acetate fraction (500 ppm) can capture the DPPH radical 74.105% with IC50 values of 68.11 ppm which is the highest antioxidant activity and is followed by the fraction of butanol, ethanol, and diethyl ether.
Keyword: DPPH, wungu leaves, α-glucosidase, antioxidant, antidiabetic

Judul: Profil Lipid Peroksida Tikus Sprague Dawley Hiperglikemia yang diberi Ekstrak Daun Wungu (Graptophyllum pictum L. Griff)
Abstrak: Ethanol extract of the wungu leaf has an antioxidant according to an in vitro test. The purpose of this study was to determine the antioxidant activity of the ethanol extract and its partitions in an in vivo study by analyzing the lipid peroxide concentrations of liver in the hyperglycemic Sprague Dawley rats. Solvents used for the multilevel partition of the etanol extract were diethyl ether, ethyl acetate, and n-butanol. Further step was a phytochemical compounds qualitative test for the extracts. Lipid peroxide analysis was done by taking four livers from each group, there were seven treatment groups; normal group (K-1), glybenclamide control (K-2), hyperglycemia control (K-3), ethanol (K-4), diethyl ether (K-5), ethyl acetate (K-6), and n-butanol (K-7). The ethyl acetate extract contains bioactive compounds such as saponins, steroids, and tannins with a yield of 0,23%. The ethyl acetate extract can reduce the lipid peroxide of the liver by 57,19% and this is significant (p <0,05) with other groups.
Keyword: hyperglyemic, antioxidant, wungu leaf, lipid peroxide

Judul: Pembangunan Content Streaming untuk Sistem Pembelajaran Jarak  Jauh (SIRANJAJA) pada Jaringan Piconet Menggunakan Java API JSR-82
Abstrak: Handphone kini telah dilengkapi dengan berbagai piranti tambahan (seperti kamera, bluetooth, dan lain-lain) sesuai dengan tuntutan kebutuhan konsumen. Handphone kini telah menjadi perangkat yang multiguna. Seiring dengan hal itu, kegiatan pembelajaran jarak jauh juga semakin banyak dikembangkan. Kegiatan belajar mengajar tidak lagi dibatasi dengan pertemuan fisik dalam satu ruang perkuliahan. Dengan kemajuan teknologi, ruang perkuliahan bisa digantikan dengan ruang kelas virtual (virtual class). Virtual class yaitu kelas virtual di mana dosen dan mahasiswa tidak harus bertatap muka dalam satu kelas, tetapi dapat digantikan dengan aplikasi video streaming. Bluetooth adalah suatu teknologi radio jarak pendek yang memungkinkan konektivitas tanpa kabel antar perangkat yang bersifat mobile. Ketersediaan kamera dan bluetooth pada handphone memungkinkan peluang untuk memanfaatkannya sebagai media pembangunan content streaming untuk berbagai keperluan, di antaranya untuk sistem pembelajaran jarak jauh.
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