Implementasi Media Pembelajaran Teknik Pengkodean Barcode Berbasis Multimedia dalam Meningkatkan Kualitas Kegiatan Belajar Mengajar

Science information and communication technology, especially the use of computers is growing rapidly every year. One is the application in multimedia. Multimedia has changed the way people interact with computers. Multimedia applications can quickly attract the attention of someone, to be used according to their individual needs. Today, many multimedia functions involved in various fields of activity. Not only in entertainment but also used in the learning process. Media multimedia-based learning is one application that can be used for students in education today. Because it can provide an interactive learning materials and supported various aspects such as audio, video, animation, text, and graphics. Software development methods of learning media using the Multimedia Development Lifecycle. Multimedia Development is carried out by eleven stages, namely defining the problem, feasibility studies, system requirements analysis, design a concept, designing the content, designing text, graphics designing, producing system, test system, using the system, maintaining the system. Application of instructional media barcode-based multimedia coding techniques to assist teachers in improving the quality of teaching and learning activities so that it becomes more attractive for students

Lunar Phase-Dependent Expression of Cryptochrome and a Photoperiodic Mechanism for Lunar Phase-Recognition in a Reef Fish, Goldlined Spinefoot

Lunar cycle-associated physiology has been found in a wide variety of organisms. Recent study has revealed that mRNA levels of Cryptochrome (Cry), one of the circadian clock genes, were significantly higher on a full moon night than on a new moon night in coral, implying the involvement of a photoreception system in the lunar-synchronized spawning. To better establish the generalities surrounding such a mechanism and explore the underlying molecular mechanism, we focused on the relationship between lunar phase, Cry gene expression, and the spawning behavior in a lunar-synchronized spawner, the goldlined spinefoot (Siganus guttatus), and we identified two kinds of Cry genes in this animal. Their mRNA levels showed lunar cycle-dependent expression in the medial part of the brain (mesencephalon and diencephalon) peaking at the first quarter moon. Since this lunar phase coincided with the reproductive phase of the goldlined spinefoot, Cry gene expression was considered a state variable in the lunar phase recognition system. Based on the expression profiles of SgCrys together with the moonlight's pattern of timing and duration during its nightly lunar cycle, we have further speculated on a model of lunar phase recognition for reproductive control in the goldlined spinefoot, which integrates both moonlight and circadian signals in a manner similar to photoperiodic response