Sari SLA, Pangastuti A, Susilowati A, Purwoko Tj, Mahajoeno E, Hidayat W, Mardhena I, Panuntun DF, Kurniawati D, Anitasari R. 2016. Cellulolytic and hemicellulolytic bacteria from the gut of Oryctes rhinoceros larvae. Biodiversitas 17: 78-83. Lignocellulose is very potential as raw material for biofuel production because it is cheap, abundant and renewable. The main carbohydrate constituents of lignocellulosic material are cellulose and hemicelluloses (a group of heteropolymers that includes xylans and mannans). The most important process in bioethanol production from lignocellulose is the bioconversion of polysaccharides into fermentable sugar. Enzymatic hydrolysis has been developed because it is the more environmentally approach. Since the cost of hydrolytic enzyme production is the major problem of the process, many type of research has been focused on lowering the cost of enzyme production, including screening for organisms with a novel enzyme. This present study was conducted to isolate and screen of the cellulolytic and hemicellulolytic Bacteria from the gut of Oryctes rhinoceros L. larvae. The 3 rd instars were used in this research. The research succeeded to isolate 11 bacterial isolates from the gut of O. rhinoceros larvae. The screening result demonstrated that bacterial isolates had cellulolytic (63.6% of total isolates), xylanolytic (72.7% of total isolates), and mannanolytic (100% of total isolates) activity. Based on the 16S rDNA sequence, 10 isolates were classified into Bacillus and only 1 isolate was classified into Citrobacter. The GOR2 which was closely related to Bacillus pumilus vit bac1 has the highest cellulolytic and xylanolytic activities. The isolate with the highest mannanolytic activity was the GOR7 which was closely related to Bacillus aryabhattai strain IHB B 6821.
Basic Programming is a productive subject in the study of ICT Vocational High School programs that require students to develop information systems in accordance with the times. Lack of applicative material in basic programming subjects is a problem that is often encountered so that the level of critical thinking of students is less than optimal. In addition, the level of student interest in these subjects is less than optimal because of the monotonous implementation of learning. The solutions offered through this study aim to produce gamification-based mobile applications as innovative and communicative learning media. The development method used is the ADDIE model (Analyze, Design, Development, Implementation, and Evaluation). The result shows the total usability level is in 81.75%. Material validation shows the results in 88.89% and validation from media experts is 80.83%. Test results on the small group trial subjects shows 84.4% valid and the large group 85.22% valid. Based on the results of product usability testing and field trials, it can be concluded that the product is suitable for use as a medium in the learning process. The concept of gamification in this media also increases the attractiveness and motivation of users in order to obtain maximum testing results.
AbstrakPengintegrasian produk Teknologi Informasi dan Komunikasi (TIK) di dalam pembelajaran asinkron merupakan langkah yang tepat untuk meningkatkan keahlian komunikasi yang efektif, memecahkan masalah, dan berpikir kritis, kreatif, adaptif, dan reflektif. E-learning adalah sebuah bentuk pembelajaran yang mengintegrasikan produk TIK. E-learning dilengkapi dengan fitur tata kelola seperti fasilitas komunikasi, pemantauan, dan evaluasi. Edmodo adalah alternatif media pembelajaran di lingkungan e-learning yang mampu memberikan tata kelola pembelajaran yang baik, mudah dioperasikan, dan memfasilitasi kelas digital yang besar. Sebuah eksperimen telah dilakukan untuk menguji Edmodo sebagai media pembelajaran yang bersifat asinkron dengan menggunakan metode penelitian pre-experimental design tipe one-group pretestposttest. Eksperimen dilakukan pada perkuliahan matakuliah Manajemen Proyek Sistem Informasi (MPSI), Fakultas Ilmu Komputer, Universitas Brawijaya. MPSI adalah matakuliah yang membekali mahasiswa dengan kompetensi komunikasi yang efektif, memecahkan masalah, berpikir kritis, dan kreatif dalam merencanakan sebuah proyek. Tujuan dari eksperimen yang dilakukan adalah apakah pemanfaatan Edmodo mampu meningkatkan kualitas perencanaan proyek dan apakah Edmodo merupakan media pembelajaran yang efektif untuk proses pembelajaran yang bersifat asinkron. Hasil eksperimen menunjukkan bahwa pemanfaatan Edmodo sebagai media e-learning yang bersifat asinkron untuk meningkatkan kualitas proyek pada matakuliah MPSI adalah sangat baik. Hal ini terbukti dengan kualitas perencanaan proyek yang meningkat dan nilai efektivitas yang sangat tinggi. Kata Kunci: E-learning, Edmodo, asinkron, proyek AbstractIntegrating Information and Communication Technology (ICT) product in asychronous learning was the right step to improve the skills of effective communication, problem solving, thinking critically, creatively, and reflectively. E-learning was a form of media learning that integrates ICT products. E-learning was equipped with learning management features such as communication facilities, monitoring, and evaluation. Edmodo was an alternative medium of e-learning that provide good learning management, easy to operate, and facilitate large digital classroom. An experiment was conducted to test Edmodo as an asynchronous learning medium. The experiment used pre-experimental research design, one-group pretest-posttest type. Experiment was conducted in Project Management of Information System (PMIS) lecture, Faculty of Computer Science, Brawijaya University. PMIS was subjects that equip students with the competencies of effective communication, problem solving, critical thinking, and creativity in planning a project. The purpose of the experiment was whether the use of Edmodo could improve the quality of project planning and whether Edmodo was an effective learning media for asynchronous learning process. The experiment results showed that the use of Edmodo as an asychronous e-learning media to improve the quality of the project in PMIS cour...
There is a paradigm shift in curriculum development and learning in 21-st century universities. The curriculum is no longer organized in a separate but in integrated manner or commonly referred to as transdisciplinary approach. Several transdisciplinary learning strategies need to be considered, to be studied and developed as learning innovations. One strategy initiated through this paper is the Personalized Online Training System (POTS). POTS provided opportunities for students to search, process, analyze, interpret, and communicate data and information obtained on POTS media. POTS developed based on Generation Z characteristics that are very familiar with technology, have a good self-confidence, high initiative, creative and innovative. The research instrument used questionnaire with a Likert scale using the UEQ framework to 118 students. The result showed that user experience score, usability score, learning design validation score, and students’ response from the interview session indicate that the system is good; yet an improvement is needed.
The aims of this research are to know about mathematical problem-solving ability student of senior high school towards trigonometry material, mathematical reasoning ability student of senior high school towards the statistical material, and self-efficacy ability in mathematics learning students of a senior high school. The research used descriptive qualitative research, and the research object is XI IPA of senior high school. The chosen students are students who have learned about trigonometry and statistic. The chosen students who become sample are 30 students. In this research, the technic used tests, with the instruments used are question and questionnaire. The test consists of 5 question about mathematics problem-solving, 5 question of mathematical reasoning, and 40 questionnaires of self-efficacy ability. According to the results of our research, it can be concluded that the students' ability in problem-solving and reasoning mathematics is low, while students' ability in self-efficacy is good. It can be seen that the students have good self-efficacy ability along with the problem-solving ability and reasoning ability that are still low.
The small island has a very unique hydrological characteristics. The unique character are low rainfall, rain catchment narrow and high vulnerability to seawater intrusion. This study aims to (1) analyze the groundwater hydrogeochemistry facies in Panggang Cay and (2) to analyze the evolution of groundwater hydrogeochemistry in Panggang Cay. Data used include major element analysis results of the groundwater samples taken from the study site. Hidrogeochemistry fasies of groundwater determined the type of diagram analysis stiff, while the analysis of the hydrogeochemistry evolution of groundater analyzed using piper diagram. Groundwater hydrochemical facies in Panggang Cay is MgCl2 with hydrogeochemical evolution of CaCO3 into MgCl2. The evolution of hydrogeochemistry fasies that occur indicate the sea water intrusion process.
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