Pengembangan Instrumen Tes Diagnostik Model Testlet Sebagai Pendeteksi Kesulitan Belajar Peserta Didik Pada Pokok Bahasan Larutan Penyangga

The development of instrument diagnostic test as a testlet model for learning difficulties detection on chemistry is a kind of reserach development which is used ADDIE model. The ADDIE model has consisted some stages such as: Analysis, Design, Development, Implementation and Evaluation. Because some limitations, The research stage just until is done until Implementation stage, that use some doing trial in limited subjects used, is trialed at SMAN 12 and the istruments is done validated by some lectures of Pendidikan Kimia-FKIP, UR. The study aims to: (1) develop of instrument diagnostic test as a testlet model for learning difficulties detection on chemistry is a kind on buffer, (2) Know the learning difficulties detection using on chemistry is a kind diagnostic test model testlet instrument, (3) Know the reliability of the problem, the level of difficulty of the problem, and the differentiation of the problem. The results of the research shows that: (1) The diagnostic test instrument of developed testlet model is stated valid from material aspect, construction aspect, and language aspect, (2) students of class XI IPA 2 SMAN 12 Pekanbaru have difficulty studying on indicators 4, 5 and 6 Students of class XI IPA 3 SMAN 12 Pekanbaru have difficulty studying on indicator 2, 4, and 6. (3) reliability matter 0,55; The difficulty level of the item consists of 15 items of easy category, 12 items on medium category, and 13 items on the difficult category; The problem of differentiator of item item consists of 2 items of good category, 2 items about good category, 9 items about enough category, and 27 items about bad category

Potensi Mikroba Indigenus Asal Tanah Gambut Desa Rimbo Panjang Kabupaten Kampar Riau Dalam Menghambat Pertumbuhan Ralstonia Solanacearum

Ralstonia solanacearum is one of soil pathogen bacteria that attack horticulture plant.Chemical pesticides are used commonly to control bacteria. Using chemical pesticidescontinously can give negative effect for living things and the evironment. Some soilmicrobes produce antibacterial compounds. This study aimed to test the potential ofpeat land microbes at Rimbo Panjang Kampar to inhibit Ralstonia solanacearum. Thisstudy used agar disk method to calculate the ratio activity between the inhibition zoneand the colony diameter (Z/K) and then grouped into high, medium and low criteria.Twenty isolates of fungi that produced antibacteria against Ralstonia solanacearumconsisted of genus Penicillium and Trichoderma. Isolate RPL2-29 (Penicillium) had thehighest ratio (2.12) and isolate RPL2-38 (Penicillium) had the lowest ratio (1.14).Eleven isolates of actinomycetes that produced antibacteria consisted of Streptomyces,Micromonospora while 2 isolates has not been unidentified.Isolate RB3S51(Streptomyces sp.) had the highest ratio (2.87) and RB3S57 (Streptomyces sp.) had thelowest ratio (1.29).The high criteria was dominated by actinomycetes isolates of thegenus Streptomyces. Isolate RB3S51 (Streptomyces sp.) had the highest ratio (2.87) andthe lowest ratio of fungal isolates RPL2-38 with ratio 1.14. Based on thecharacterization, the fungi were classified into the genus Penicillium

VERBALIZATION OF “FAMILY” AS A CULTURAL NOTION IN THE NOVELS “WAR AND PEACE” BY L. TOLSTOY AND “IN CHANCERY” BY J. GALSWORTHY

Purpose: The paper is devoted to the study of verbalizing the social and cultural notion "family" in the second volume of the novel “War and Peace” by L. Tolstoy and the novel “In Chancery” by J. Galsworthy. It describes the stylistic devices enabling to realize positive and negative connotative components of the meaning of linguistic units verbalizing the notion “family”. Methodology: In order to achieve the goal of our research we conducted a thorough comparative analysis of the texts of the works under study. Result: The results of our study allow us to draw a conclusion regarding the linguistic means enabling to realize ameliorative and pejorative connotative components in the meaning of the word “family” used in combination with it. Furthermore, the evidence from this study allowed us to compare the images of the British and Russian in the studied works represented by the analyzed linguistic means. Applications: This research can be used for universities, teachers, and students. Novelty/Originality: In this research, the model of Verbalization of “Family” as a Cultural Notion in the Novels “War and Peace” BY L. Tolstoy and “In Chancery” by J. Galsworthy is presented in a comprehensive and complete manner

Effective Use of Simulation Means in Collective Mission Simulation

Mission training and rehearsal are vital to successful operations. Advances in modeling and simulation (M&S) technology now allow for Collective Mission Simulation (CMS). The Royal Netherlands Armed Forces have exploited CMS through participation in a number of virtual exercises. The potential of collective mission simulation has been recognized and the requirement for a CMS capability was formalized. Such a capability is characterized by effective realism, interoperable systems across domains, and seamless information flow. Within the next few years the Royal Netherlands Armed Forces want to establish a validated, reusable, interoperable mission simulation environment that will support the distributed simulation of tactical and operational missions at varying degrees of security classification

Analisis Fisiologi Bakteri Lignoselulolitik dan Aktinomisetes Selulolitik dan Ligninolitik dari Tanah Gambut Desa Rimbo Panjang Kabupaten Kampar sebagai Agen Biokompos

During a composting process, microorganisms such as bacteria, fungi, and actinomycetes have a role in degradation of organic matter. Temperature and pH also influence composting process. This research was aimed to obtain bacterial isolates and actinomycetes with the best ability to be applied as biocompost agent by analyzing the ability of those isolates to grow in different temperature and pH. Isolates of actinomycetes and bacteria were isolated from peatsoils in Rimbo Panjang, Kampar Regency, Riau. Bacterial isolates were inoculated into Nutrient Broth medium and actinomycetes isolates were inoculated into Starch Casein Broth medium. The cultures were incubated at room temperature (±27°C), 40°C, 50°C, 60°C, 70°C and 80°C in pH of 5 and pH of 7. The results showed that 3 isolates of bacteria and 90 actinomycetes isolates were able to grow at room temperature (±27°C) and 40°C in pH of 5 and pH of 7. A total of 28 actinomycetes isolates grew at 50°C in pH 5 and pH 7 with 2 isolates were considered as the most potential, which were Rhodococcus sp. and Streptomyces sp.

Perbedaan Hasil Belajar Ekonomi Siswa yang Menggunakan Model Cooperatif Learning Teknik Talking Chips (Kancing Gemerincing) dengan Pembelajaran Konvensional pada Siswa Kelas X SMA N 1 Ranah Pesisir

Abstract This research was motivated by the results of studying economics class X SMA N 1 Ranah Pesisir is still low, still centered learning to teachers, so that students are less active, creative and motivated. One attempt to improve student learning outcomes is by applying economic models Talking Chips learning techniques. This study to determine the differences in students learning outcomes using economic models Talking Chips learning technique with conventional learning in class X SMA N 1 Ranah Pesisirs. This study is the type of experiment. The study population is a X grade students of SMA Negeri 1 Ranah Pesisir, while the sample is X5 class learning model that uses the technique as a class experiment Talking Chips and X4 class as class control with conventional learning. Instrument used was a written test in the form of an objective matter. Data were analyzed by descriptive and inductive analysis through Z. Based on the test results of the test scores of students studying Economics, the average grade obtained by the experiment is 82.23 with a standard deviation of 12.52 and an average grade of control was 75.68 with a standard deviation of 11,60. From the analysis of the Z test is obtained Zhitung (2.782) > Ztabel (1.960) which means H0 is rejected and H1 is accepted . Thus it can be concluded that there are significant differences in learning outcomes of students who use the economic model of learning techniques Talking Chips with conventional learning class X SMA N 1 Ranah Pesisir of the school year 2013/2014

Uji Potensi Antifungi Aktinomisetes Selulolitik Dan Ligninolitik Dan Bakteri Lignoselulolitik Isolat Lokal Terhadap Pertumbuhan Jamur Ganoderma Boninense Dan Colletotrichum Capsici

Colletotrichum capsici fungi, causing agent of anthracnose in Chili, and Ganoderma boninense, fungi causing agent of basal stem rotten in oil palm, can reduce the productivity of Chili and oil palm. These disease are increasing so that it is necessary to find local biological agents that are environmentally friendly. The purpose of this research was to determine the potential isolates of lignocellulolyltic bacteria and cellulolytic and ligninolytic actinomycetes from peat soil of Rimbo Panjang Kampar, Riau as an antifungal agent to inhibit the growth of C. capsici and G. boninense.Antifungal activity was screened using agar disc method by measured the inhibition zone for seven days. The results showed that 13 isolates of actinomycetes haveantifungal activity against C. capsici with the highest inhibition zone 13,3 mm by RB2S40. Six isolates of actinomycetes have antifungal activity against G. boninense with the highest inhibition zone 29,15 mm by RB1S4. Five isolates have the ability to inhibit both fungi which were targeted