Judul: Evaluasi Kualitas Nutrien Hasil Biofermentasi Pelepah Sawit (Elaeis guineensis Jacq.) dengan Phanerochaete chrysosporium pada Dosis Inokulan dan Lama Fermentasi yang Berbeda
Abstrak: Pelepah sawit sebagai bahan pakan alternatif memiliki kandungan serat tinggi dengan kadar nutrien rendah. Biofermentasi dengan Phanerochaete chrysosporium dapat meningkatkan kandungan nutrien pelepah sawit (PS). Penelitian ini bertujuan untuk mengevaluasi interaksi lama fermentasi dan dosis inokulan terhadap perubahan kualitas nutrien pelepah sawit, pH dan aktivitas air (aw) selama proses biofermentasi PS. Penelitian ini menggunakan metode rancangan acak lengkap (RAL) pola faktorial (3x3) dengan 3 ulangan. Faktor pertama adalah dosis inokulan : 105 CFU ml-1 , 106 CFU ml-1 , dan 107 CFU ml-1 , faktor kedua adalah lama fermentasi : 10 hari, 15 hari, dan 20 hari. Tidak terdapat interaksi antara dosis inokulan dan lama fermentasi pada hasil biofermentasi PS untuk parameter pH, aw, dan seluruh kandungan nutrien (P<0.05). Dosis 106 CFU ml-1 per 15 gram sampel pelepah kelapa sawit (as fed) dan 15 hari fermentasi optimum meningkatkan kadar Protein kasar dan BETN, serta menurunkan serat kasar, dengan nilai pH 4.96 dan aw 0.893.
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Judul: Evaluasi Komponen Serat Hasil Biofermentasi Pelepah Sawit (Elaeis guineensis Jacq.) dengan Phanerochaetae chrysosporium pada Dosis Inokulan dan Lama Fermentasi yang Berbeda
Abstrak: Oil palm frond (OPF) is a crop residue which containing high fiber, so that if it is used as animal feed, it can decrease the digestibility. Biofermentation with Phanerochaetae chrysosporium is a way to solve this problem. This research aimed to evaluate the interaction between inoculant dose and the length of fermentation with P. chrysosporium on pH, water activity (aw), and fiber components. This research used factorial completely randomized design (3x3). The first factor was inoculant doses: 105 CFU ml-1, 106 CFU ml-1, and 107 CFU ml-1, while the length of fermentations (10, 15, 20 days) as a second factor. The results showed that there ware interaction between two factors to fiber components, but interaction was not detected between two factors to pH and aw. Combination of 107 CFU ml-1 inoculant dose with 10 days fermentation were the most effective to decrease NDF, ADF, hemicelluloses, lignin, and cellulose of OPF.
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Judul: Sistem Informasi Geografis untuk Pola Aktivitas Manusia dengan Pemodelan Data Spatio-Temporal
Abstrak: The human activity in a given time period will shape its pattern. This research develops a spatiotemporal data model to support the prediction of human existence based on activity-pattern and also visualizes the activity locations in a GIS environment. This so-called mobility oriented spatiotemporal data model conceptualizes the spatial and temporal interaction of activity behaviour using the concept of mobility. In other words, activity patterns are conceptualized as a sequence of staying at or traveling between activity locations. The model can support the analysis and queries of activities from different perspectives, i.e. queries can be time-oriented, person-oriented, activity-oriented, and location-oriented. A prototype system based on the activity data modelling is implemented in MySQL 5.0.27 as DBMS with using PhpMyAdmin 2.9.1.1 software. Spatial database is developed with using software QuantumGIS and ArcView. The system could be accessed online through a web browser with MySQL as its database storage and Pmapper framework as the tools used in visualizing the activity locations.The information were provided in the form of activity attribute-data as the user requested and graphical-data (map) which contains information about its activity locations.
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