Judul: Pembangunan Aplikasi Android Informasi Tumbuhan Berbasis Geospasial di Kebun Raya Bogor
Abstrak: Kebun Raya Bogor merupakan tempat penelitian dan pariwisata edukasi tumbuhan tropis. Papan tumbuhan adalah salah satu fasilitas yang disediakan Kebun Raya Bogor. Papan tumbuhan berfungsi untuk menginformasikan jenis tumbuhan yang dilestarikan. Sedikitnya informasi yang dimuat dan kerusakan pada beberapa papan tumbuhan menyebabkan fungsinya menjadi kurang efisien. Penelitian ini berupaya menghadirkan sebuah solusi atas permasalahan tersebut. Solusi yang diajukan adalah membangun aplikasi informasi tumbuhan pada smarthphone Android. Aplikasi tersebut dapat meningkatkan efisiensi informasi tumbuhan melalui sebuah antarmuka yang ditampilkan. Global positioning system menjadi salah satu teknologi yang dimanfaatkan untuk mendeteksi informasi tumbuhan berbasiskan geospasial. Formula Haversine berfungsi untuk mengkalkulasi jarak dari lokasi relatif tumbuhan terhadap lokasi user saat ini. Pengujian aplikasi pada 2 tipe smartphone yang berbeda memberikan performa yang cukup baik. Persentase rata-rata akurasi tepat mendeteksi sebesar 66% dan 73%. Aplikasi yang telah dibangun mampu mendeteksi posisi dan menampilkan antarmuka informasi tumbuhan yang lebih lengkap.
Keyword: Android, Bogor Botanical Garden, Geospatial, Plant information, Smartphone, Efisiensi informasi, Global positioning system, Akusisi data, Informasi tumbuhan

Judul: Pengembangan Sistem Informasi Tanaman di Kebun Raya Bogor Berbasis Android
Abstrak: Bogor Botanical Gardens (BBG) is the third largest botanical garden in Indonesia. There are 13697 specimens in BBG, which are grouped into 3441 species, 1265 genus, and 220 families in an area of 87 hectares. The absence of an application which can provide information about the plant and its location causing difficulties for users to gain detail information and location of a plant to be visited. The purpose of this research was to build a plant information systems at BBG by integrating geographic information system (GIS) on Android. This system was expected to help users to see detail information of plants and can guide them to the area location they want to visit. The research was conducted in several stages, started with planning, analyzing system requirements, system design, system implementation, and maintenance. The test results shown that the system was able to work well and produce the expected output
Keyword: Bogor Agricultural University (IPB), Information System., GIS, Bogor Botanical Garden, Android

Judul: Karakteristik Carboxymethyl Chitosan Dengan Variasi Konsentrasi NaOH
Abstrak: Carboxymethyl chitosan is chitosan derivative product obtained from chemical modification. CMCh were made by alkalization process and carboxymethylation process. Factors that affect CMCh characteristics were excess sodium hydroxide in alkalization process, ratio between chitosan and monochloroacetic acid, and carboxymethylation temperature. The objectives of this research were to study the NaOH effect to CMCh characteristics, to learn process of making CMCh, to set the proper concentration of NaOH, and to analyze CMCh characteristics. CMCh yields were 110.72%-114.22%. CMCh pH value were 3.74-4.31. The optimum NaOH concentration to obtain the best CHCh was 10 M. Percentage of CMCh moisture content was 10.70%-11.42%. Ash content and nitrogen content of CMCh were 0.49%-0.50% and 4.52%-4.81%. CMCh viscousity was 8.25 cps. Percentage of CMCh solubility was 61.61%-91.50%. The different functional groups from chitosan which observed in CMCh were C=O group, CH group from alkene functional group, C−O group, and C−O−C group.
Keyword: solubility., functional group, CMCh characteristics, chitosan, carboxymethyl chitosan