Analisis Kinerja Sistem Proteksi Berdasarkan Frekuensi Gangguan di Gardu Induk 150 KV Garuda Sakti

With the disruption that can not be predicted, we need a safety equipment (protection system) are precise and reliable. The purpose of this study was to determine the quantity of interference, protection system performance, reliability and power transformer protection system installation requirements in the area power transformer substation of 150 KV Garuda Sakti. Data obtained from the recording in substation Garuda Sakti analyzed using Descriptive Analysis Techniques percentage. The survey results revealed that from 2013 to 2015 occurred 28 times transformer disorders namely: in 2013 occurred 9 times transformer interference, in 2014 occurred 7 times transformer interference, and in 2015 the 12 times the transformer interference. Protection system that works in the event 28 times disruption in Substation Garuda Sakti 2013 to 2015 there are 6 kinds of relays, namely: Rele differential, Rele OCR / GFR, Rele OVR / UVR, Rele REF / SBEF, Rele UVLS and Rele DF / DT is the whole relay has a 100% reliability and got up fairly well. From 2013 to 2015 the reliability of Power Transformer Substation of Garuda Sakti by long outages caused by the interference, the Transformer Power1 reaches the percentage 99.97203%, the Transformer Daya2 reaches 99.983364%, the Transformer Daya3 reach 99.99258% and the Transformer Daya4 reaching 99.99081%. From the data analysis, in general, the protection system in the substation Garuda Sakti it can be argued that meets the requirements of the protection system selectivity, Reliability, Free Labor, Sensitivity and Economic

Sonneratia Alba sebagai Sumber Senyawa Antibakteri Potensial

Four different organic solvents, methanol, N- heksana, kloroform, and etil acetate were used to extracted some bioactive compounds from bark of mangroves plant Sonneratia alba (kayu buli) for screening of antibacterial activity against three pathogen bacteria, Staphylococcus aureus,Eschericha coli, and Bacillus subtillis by agar diffusion method. All extracts were able to inhibit the growth of these bacterial significantly in concentration of 5%. Etil acetate ekstract showed highest antibacterial activity.Methanol, chloroform, and etil acetate were effective solvent to extract bioactive compound that have a antibacterial properties from this plant

Laju Transpirasi Tumbuhan Dominan Pasca Kebakaran Lahan Gambut dan Pemanfaatannya untuk Rancangan Media Flipchart Biologi SMA

This study aims to determine the characteristics of transpiration of dominant plants post fire peatland in Rimba Panjang Village, Kampar District. The results of the research will be utilized for flipchart media design of the influence of external factors on the growth and development of plants in Class XII Senior High School. This research was conducted in February-June 2017 by using 2 phases namely (1) Stage measurement of transpiration rate of dominant plants; (2) Stage design of Senior High School Biology flipchart media. The research used survey method with observation in Rimba Panjang Village, Kampar District. Determination of sampling location was done by purposive random sampling based on the gradient of fire time and the samples were taken by using the line method. Flipchart media design is done by analysis and design phase. The main parameters in this study were the transpiration rate of dominant plants of sapling level and environmental factors namely soil moisture, light intensity, temperature and humidity as supporting parameters. The results showed that the transpiration characteristics of dominant plants after fire were influenced by the time of the fire. The transpiration rate tends to decrease from the observation site with the longest fire incident time (2009) to the new site experiencing the fire incident (2017). After a fire incident, plants need time to recover from damage both in function and physiology of plants. Differences in environmental conditions at each site with a gradient time observation of the fire is influenced by the high and low intensity fires. Based on the research results developed as a teaching material that will be presented in the design of Senior High School Biology flipchart media

The Excellence Class Learning Atmosphere of English for Biology II Biology Education Study Program Faculty of Teacher Training and Education University of Riau

A descriptive study on learning atmosphere in the excellence BiologyTeacher\u27s Education Program, The Faculty of Teacher Training and Education,University of Riau has been conducted in the Even Semester of the AcademicYear 2012/2013. The objective was to find out the learning atmosphere inEnglish for Biology II courses. As much as eighteen students have been defined asthe total respondents by total sampling technique. Data of seven indicatorslearning atmosphere, namely: (1) cohesiveness, (2) lecture support, (3)involvement, (4) investigation, (5) task orientation, (6) cooperation, and (7)lecture equity obtained by questionnaire What Is Happening In this Class(WIHIC). The questionnaire was valid (rxy0,54>critical values0,3) dan reliabel(r110,96>critical values0,7). The questionnaires were directly ditributed to therespondents at the end of the semester. Supplements data were taken by videorecording during the learning process. All data were analyzed descriptively. Theresults showed that learning atmosphere English for Biology II were consideredvery conducive from aspects of cohesiveness of relationship between students,task orientation, cooperation and lecture equity. While the lecture support,involvement, and student investigations were considered is enough conducive. Inclonclusion, the learning atmosphere of English for Biology II by using Research-based teaching were considered was enough conducive. However, the learningatmosphere of English for Biology II is still needs to be improved in order tobecome very conducive, especially with regard to indicators of lecturer support,student involvement and investigation

Desain Rencana Pembelajaran Berbasis Pedagogi Hijau untuk Mahasiswa Calon Guru Biologi Fkip Universitas Riau

The purpose of this research is design of lesson plan based green pedagogy for Biology pre-teacher students FKIP University of Riau. The development was conducted at Biology Education University of Riau. The research held on January until June 2015. Datawere collected byfillingthe validity of the assessment sheet by each validator. Collected datas were analyzed by descriptive statistics. Results of the validity of development lesson plan green pedagogy meet I-XVI are; 3,18; 3,16; 3,19; 3,27; 3,17; 3,28; 3,22; 3,29; 3,17; 3,21; 3,17; 3,28; 3,18; 3,15; 3,16 and 3,20 with valid category. Results of limiting test is 86,25% with very valid. On the last stage of the research, a limiting test on the biology students. Based on the research's results can be concluded that the design of lesson plan based green pedagogy for Biology pre-teacher students FKIP University of Riau was done with the ADDIE model that consists of some phase, start from analyze, design, develop until limiting test. Based on the results of validation, lesson plan design green pedagogy could be implemented with the field test

Desain Lembar Kerja Mahasiswa (Lkm) Berbasis Pedagogi Hijau untuk Mahasiswa Calon Guru Biologi Fkip Ur

The purpose this study was to design Student Worksheet (LKM) based Green Pedagogy. Research conducted at the campus of the Faculty of Sciences of Education University of Riau (Biologi FKIP UR) in January-June 2015. The LKM is designed to help students explore biology pre- teacher to understanding of the environment and sustainability to foster competence ESD biology teacher, LKM development is based on a 5-dimensional model of burn that content contains of LKM contained sustainability issues that context is local and close to the student. The issues raised trying to dig critically reflective abiding students to be able to think and act green through experiential learning and active participation in learning. Type this study was research and development by using ADDIE's model. Instrument in this study were used observation sheets, interviews sheet, validation sheets and questionnaire responses sheets. The development of LKM was validation by 3 validator. Aspects assessed on LKM which aspects of design, pedagogy, and the content and language. There are 13of LKM based Pedagogy Green was develop, validation values showed that average score validation in the range of 3.06 to 3.19 with a valid category. Advice given validator for LKM serve as revision material prior to LKM before preliminary field test. preliminary field test held on 20 students of Biology Education. Based on student responses to the use of the LKM was excelent with obtained a score of 85.83% on aspects of design, 86.56% on aspects of pedagogy, and 85.50% on aspects of language and content

SPRITE and ASSAM: web servers for side chain 3D-motif searching in protein structures

Similarities in the 3D patterns of amino acid side chains can provide insights into their function despite the absence of any detectable sequence or fold similarities. Search for protein sites (SPRITE) and amino acid pattern search for substructures and motifs (ASSAM) are graph theoretical programs that can search for 3D amino side chain matches in protein structures, by representing the amino acid side chains as pseudo-atoms. The geometric relationship of the pseudo-atoms to each other as a pattern can be represented as a labeled graph where the pseudo-atoms are the graph's nodes while the edges are the inter-pseudo-atomic distances. Both programs require the input file to be in the PDB format. The objective of using SPRITE is to identify matches of side chains in a query structure to patterns with characterized function. In contrast, a 3D pattern of interest can be searched for existing occurrences in available PDB structures using ASSAM. Both programs are freely accessible without any login requirement. SPRITE is available at http://mfrlab.org/grafss/sprite/while ASSAM can be accessed at http://mfrlab.org/grafss/assam/

The Glaciozyma antarctica genome reveals an array of systems that provide sustained responses towards temperature variations in a persistently cold habitat

Extremely low temperatures present various challenges to life that include ice formation and effects on metabolic capacity. Psyhcrophilic microorganisms typically have an array of mechanisms to enable survival in cold temperatures. In this study, we sequenced and analysed the genome of a psychrophilic yeast isolated in the Antarctic region, Glaciozyma antarctica. The genome annotation identified 7857 protein coding sequences. From the genome sequence analysis we were able to identify genes that encoded for proteins known to be associated with cold survival, in addition to annotating genes that are unique to G. antarctica. For genes that are known to be involved in cold adaptation such as anti-freeze proteins (AFPs), our gene expression analysis revealed that they were differentially transcribed over time and in response to different temperatures. This indicated the presence of an array of adaptation systems that can respond to a changing but persistent cold environment. We were also able to validate the activity of all the AFPs annotated where the recombinant AFPs demonstrated anti-freeze capacity. This work is an important foundation for further collective exploration into psychrophilic microbiology where among other potential, the genes unique to this species may represent a pool of novel mechanisms for cold survival

The inclusion of fisheries and tourism in marine protected areas to support conservation in Indonesia

With the rapid growth of Indonesia’s marine protected area (MPAs) estate in Indonesia, reaching 23.9 million hectares by January 2020, attention needs to be focused on strengthening the effectiveness of MPA management. Consolidating and expanding protection of Indonesia’s marine resources is critical with increasing pressure from a fast-expanding population, illegal, unreported, and unregulated fishing, pollution, coastal development, unsustainable tourism and climate change. Biodiversity conservation must therefore concurrently consider multiple economic sectors such as fisheries and tourism, and their synergies with MPA management. This paper aims to outline the current landscape of fisheries and marine tourism pertaining to area-based conservation in Indonesia, to inform and support improved integration into effective MPA management. Four areas to focus efforts were identified: diversification of governance types of community-based management, improved coordination between fisheries and MPAs during planning and management implementation, the development and support of pathways for sustainable tourism, and planning for future conditions. Sustainable development for fisheries and tourism must be incorporated into all aspects of MPA management, whilst recognising that current management systems are insufficient to ensure long-term sustainability for natural resources and local communities, and strategies need to increase resilience of social-ecological systems in anticipation of future conditions