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  Subjects -> EDUCATION (Total: 2256 journals)
    - ADULT EDUCATION (22 journals)
    - COLLEGE AND ALUMNI (9 journals)
    - E-LEARNING (31 journals)
    - EDUCATION (1931 journals)
    - HIGHER EDUCATION (137 journals)
    - INTERNATIONAL EDUCATION PROGRAMS (4 journals)
    - ONLINE EDUCATION (35 journals)
    - SCHOOL ORGANIZATION (14 journals)
    - SPECIAL EDUCATION AND REHABILITATION (38 journals)
    - TEACHING METHODS AND CURRICULUM (35 journals)

EDUCATION (1931 journals)                  1 2 3 4 5 6 7 8 | Last

Showing 1 - 200 of 857 Journals sorted alphabetically
#Tear : Revista de Educação, Ciência e Tecnologia     Open Access   (Followers: 4)
(Pensamiento), (palabra) y obra     Open Access   (Followers: 2)
21. Yüzyılda Eğitim Ve Toplum Eğitim Bilimleri Ve Sosyal Araştırmalar Dergisi     Open Access  
21st Century Pedagogy     Open Access   (Followers: 3)
@tic. revista d'innovació educativa     Open Access  
Abant İzzet Baysal Üniversitesi Eğitim Fakültesi Dergisi     Open Access   (Followers: 2)
ABDIMAS ALTRUIS : Jurnal Pengabdian Kepada Masyarakat     Open Access  
About Campus     Hybrid Journal   (Followers: 6)
Academic Medicine     Hybrid Journal   (Followers: 72)
Academic Psychiatry     Full-text available via subscription   (Followers: 30)
Academic Questions     Hybrid Journal   (Followers: 9)
Academy of Educational Leadership Journal     Full-text available via subscription   (Followers: 64)
Academy of Management Learning and Education     Full-text available via subscription   (Followers: 61)
Accounting & Finance     Hybrid Journal   (Followers: 57)
Accounting Education: An International Journal     Hybrid Journal   (Followers: 22)
Açıköğretim Uygulamaları ve Araştırmaları Dergisi     Open Access  
ACM Transactions on Computing Education (TOCE)     Hybrid Journal   (Followers: 10)
Acta Didactica Norge     Open Access   (Followers: 2)
Acta Educationis Generalis     Open Access  
Acta Paedagogica Vilnensia     Open Access   (Followers: 1)
Acta Scientiarum. Education     Open Access  
Action in Teacher Education     Hybrid Journal   (Followers: 71)
Action Learning: Research and Practice     Hybrid Journal   (Followers: 41)
Action Research     Hybrid Journal   (Followers: 48)
Active Learning in Higher Education     Hybrid Journal   (Followers: 338)
Actualidades Pedagógicas     Open Access  
Adelphi series     Hybrid Journal   (Followers: 15)
Adiyaman University Journal of Educational Sciences     Open Access   (Followers: 1)
Administração Educacional     Open Access  
Administration & Society     Hybrid Journal   (Followers: 15)
Administrative Science Quarterly     Full-text available via subscription   (Followers: 204)
Adult Education Quarterly     Hybrid Journal   (Followers: 205)
Advanced Education     Open Access   (Followers: 15)
Advances in Building Education     Open Access   (Followers: 5)
Advances in Health Sciences Education     Hybrid Journal   (Followers: 34)
Advances in High Energy Physics     Open Access   (Followers: 22)
Advances in School Mental Health Promotion     Partially Free   (Followers: 11)
AERA Open     Open Access   (Followers: 10)
Africa Education Review     Partially Free   (Followers: 25)
African Journal of Chemical Education     Open Access   (Followers: 5)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 7)
African Journal of Health Professions Education     Open Access   (Followers: 6)
African Journal of Research in Mathematics, Science and Technology Education     Full-text available via subscription   (Followers: 10)
Agora     Full-text available via subscription   (Followers: 6)
AGORA Magazine     Open Access  
Ahi Evran Üniversitesi Kırşehir Eğitim Fakültesi Dergisi     Open Access  
Ahmad Dahlan Journal of English Studies     Open Access   (Followers: 3)
AIDS Education and Prevention     Full-text available via subscription   (Followers: 8)
Ainedidaktiikka     Open Access  
Akadémiai Értesítö     Full-text available via subscription  
Akademos     Open Access   (Followers: 1)
AKSIOMA Journal of Mathematics Education     Open Access   (Followers: 2)
Aksis : Jurnal Pendidikan Bahasa dan Sastra Indonesia     Open Access  
Al-Idarah : Jurnal Kependidikan Islam     Open Access  
Al-Jabar : Jurnal Pendidikan Matematika     Open Access   (Followers: 1)
Al-Mudarris : Journal of Education     Open Access   (Followers: 1)
Al-Tadris : Jurnal Pendidikan Bahasa Arab     Open Access  
Al-Tadzkiyyah : Jurnal Pendidikan Islam     Open Access  
Al-Tanzim : Jurnal Manajemen Pendidikan Islam     Open Access  
Alan Eğitimi Araştırmaları Dergisi     Open Access  
Alexandria : Revista de Educação em Ciência e Tecnologia     Open Access  
Alotrop     Open Access  
Alsic : Apprentissage des Langues et Systèmes d'Information et de Communication     Open Access   (Followers: 17)
Alteridad     Open Access  
Amasya Universitesi Egitim Fakültesi Dergisi     Open Access  
Ambiente & Educação : Revista de Educação Ambiental     Open Access  
American Annals of the Deaf     Full-text available via subscription   (Followers: 13)
American Educational Research Journal     Hybrid Journal   (Followers: 202)
American Journal of Business Education     Open Access   (Followers: 14)
American Journal of Distance Education     Hybrid Journal   (Followers: 35)
American Journal of Education     Full-text available via subscription   (Followers: 239)
American Journal of Educational Research     Open Access   (Followers: 68)
American Journal of Health Education     Hybrid Journal   (Followers: 32)
American Journal of Physics     Full-text available via subscription   (Followers: 54)
American String Teacher     Full-text available via subscription   (Followers: 2)
Ana Dili Eğitimi Dergisi / Journal of Mother Tongue Education     Open Access  
Anadolu Journal Of Educational Sciences International     Open Access  
Anadolu University Journal of Education Faculty     Open Access  
ANALES de la Universidad Central del Ecuador     Open Access   (Followers: 3)
Annales Universitatis Mariae Curie-Sklodowska, sectio N – Educatio Nova     Open Access  
Annali dell'Universita di Ferrara     Hybrid Journal  
Annals of Dyslexia     Hybrid Journal   (Followers: 10)
Annals of Modern Education     Full-text available via subscription   (Followers: 6)
Anuario Pilquen : Sección Divulgación Científica     Open Access  
Apertura. Revista de innovación educativa‏     Open Access   (Followers: 2)
Apex : New Zealand Journal of Gifted Children     Open Access   (Followers: 1)
Applied Environmental Education & Communication     Hybrid Journal   (Followers: 17)
Applied Measurement in Education     Hybrid Journal   (Followers: 10)
Aprender     Open Access  
AR-RIAYAH : Jurnal Pendidikan Dasar     Open Access  
Arabia     Open Access  
Arabiyatuna : Jurnal Bahasa Arab     Open Access  
Archivos de Ciencias de la Educación     Open Access   (Followers: 1)
Areté, Revista Digital del Doctorado en Educación de la Universidad Central de Venezuela     Open Access  
Ars Educandi     Open Access  
Art Design & Communication in Higher Education     Hybrid Journal   (Followers: 24)
Arts and Humanities in Higher Education     Hybrid Journal   (Followers: 40)
Arts Education Policy Review     Hybrid Journal   (Followers: 5)
Artseduca : Revista electrónica de educación en las ARTES     Open Access  
ASEAN Journal of Education     Open Access   (Followers: 1)
ASHE Higher Education Reports     Hybrid Journal   (Followers: 20)
Asia Pacific Education Review     Hybrid Journal   (Followers: 12)
Asia Pacific Journal of Education     Hybrid Journal   (Followers: 23)
Asia-Pacific Education Researcher     Hybrid Journal   (Followers: 13)
Asia-Pacific Journal of Health, Sport and Physical Education     Hybrid Journal   (Followers: 9)
Asia-Pacific Journal of Teacher Education     Hybrid Journal   (Followers: 26)
Asian Journal of English Language Teaching     Full-text available via subscription   (Followers: 15)
Asian Journal of Legal Education     Full-text available via subscription   (Followers: 4)
ASp     Open Access   (Followers: 4)
Assessing Writing     Hybrid Journal   (Followers: 11)
Assessment & Evaluation in Higher Education     Hybrid Journal   (Followers: 208)
Assessment for Effective Intervention     Hybrid Journal   (Followers: 15)
Assessment in Education: Principles, Policy & Practice     Hybrid Journal   (Followers: 45)
Assessment Update     Hybrid Journal   (Followers: 5)
AStA Wirtschafts- und Sozialstatistisches Archiv     Hybrid Journal   (Followers: 5)
At-Ta'dib Jurnal Kependidikan Islam     Open Access  
At-Taqaddum     Open Access  
At-Turats     Open Access  
Atenas : Revista Científico Pedagógica     Open Access   (Followers: 1)
Athenea Digital     Open Access  
ATIKAN : Jurnal Kajian Pendidikan (Journal of Educational Studies)     Open Access  
Aula Abierta     Open Access   (Followers: 1)
Aula de Encuentro     Open Access  
Australasian Journal of Educational Technology     Open Access   (Followers: 20)
Australasian Journal of Gifted Education     Full-text available via subscription   (Followers: 7)
Australasian Marketing Journal (AMJ)     Hybrid Journal   (Followers: 4)
Australian Art Education     Full-text available via subscription   (Followers: 8)
Australian Educational Computing     Open Access   (Followers: 1)
Australian Educational Researcher     Hybrid Journal   (Followers: 31)
Australian Journal of Adult Learning     Full-text available via subscription   (Followers: 15)
Australian Journal of Career Development     Hybrid Journal   (Followers: 4)
Australian Journal of Dyslexia and Learning Difficulties     Full-text available via subscription   (Followers: 8)
Australian Journal of Education     Hybrid Journal   (Followers: 42)
Australian Journal of Environmental Education     Full-text available via subscription   (Followers: 9)
Australian Journal of Indigenous Education, The     Full-text available via subscription   (Followers: 10)
Australian Journal of Learning Difficulties     Hybrid Journal   (Followers: 5)
Australian Journal of Music Education     Full-text available via subscription   (Followers: 4)
Australian Journal of Public Administration     Hybrid Journal   (Followers: 469)
Australian Journal of Teacher Education     Open Access   (Followers: 28)
Australian Mathematics Teacher, The     Full-text available via subscription   (Followers: 7)
Australian Primary Mathematics Classroom     Full-text available via subscription   (Followers: 5)
Australian Screen Education Online     Full-text available via subscription   (Followers: 3)
Australian TAFE Teacher     Full-text available via subscription   (Followers: 4)
Australian Universities' Review, The     Full-text available via subscription   (Followers: 4)
Autism     Hybrid Journal   (Followers: 311)
Avaliação : Revista da Avaliação da Educação Superior (Campinas)     Open Access  
Azalea: Journal of Korean Literature & Culture     Full-text available via subscription   (Followers: 4)
Bahastra     Open Access  
Balkan Region Conference on Engineering and Business Education     Open Access   (Followers: 2)
Barn : Forskning om barn og barndom i Norden     Open Access   (Followers: 1)
BC TEAL Journal     Open Access  
BELAJEA : Jurnal Pendidikan Islam     Open Access  
BELIA : Early Childhood Education Papers     Open Access   (Followers: 9)
BELT - Brazilian English Language Teaching Journal     Open Access   (Followers: 4)
Berkeley Review of Education     Open Access   (Followers: 9)
Biblioteca Escolar em Revista     Open Access  
Biblioteka i Edukacja     Open Access   (Followers: 4)
Bildung und Erziehung     Hybrid Journal   (Followers: 6)
Bio-Lectura     Open Access  
Bioedukasi : Jurnal Pendidikan Biologi FKIP UM Metro     Open Access  
Bioma : Jurnal Ilmiah Biologi     Open Access  
Biosaintifika : Journal of Biology & Biology Education     Open Access   (Followers: 7)
Biosfer : Jurnal Biologi dan Pendidikan Biologi     Open Access  
Biosfer : Jurnal Tadris Biologi     Open Access  
Biuletyn Historii Wychowania     Open Access  
BMC Medical Education     Open Access   (Followers: 49)
BMJ Simulation & Technology Enhanced Learning     Hybrid Journal   (Followers: 9)
Boletim Cearense de Educação e História da Matemática     Open Access  
Boletim de Educação Matemática     Open Access  
Boletim Técnico do Senac     Open Access  
British Educational Research Journal     Hybrid Journal   (Followers: 223)
British Journal of Educational Studies     Hybrid Journal   (Followers: 185)
British Journal of Educational Technology     Hybrid Journal   (Followers: 189)
British Journal of Music Education     Hybrid Journal   (Followers: 24)
British Journal of Religious Education     Hybrid Journal   (Followers: 9)
British Journal of Sociology of Education     Hybrid Journal   (Followers: 61)
British Journal of Special Education     Hybrid Journal   (Followers: 50)
British Journal of Visual Impairment     Hybrid Journal   (Followers: 13)
Brookings Trade Forum     Full-text available via subscription   (Followers: 3)
Buabandit Journal of Educational Administration     Open Access  
Buletin Fisika     Open Access  
Bulletin De L' Association Thaïlandaise Des Professeurs de Français     Open Access  
Bulletin of the Council for Research in Music Education     Full-text available via subscription   (Followers: 6)
Business, Management and Education     Open Access   (Followers: 20)
Caderno Brasileiro de Ensino de Física     Open Access  
Caderno de Educação     Open Access  
Caderno Intersabares     Open Access  
Cadernos CEDES     Open Access   (Followers: 1)
Cadernos de Educação     Open Access  
Cadernos de Estudos e Pesquisa na Educação Básica     Open Access  
Cadernos de Pesquisa     Open Access  
Cadernos de Pesquisa     Open Access   (Followers: 2)
Cadernos de Pesquisa em Educação     Open Access   (Followers: 1)
Cadmo     Full-text available via subscription  
Cahiers de la recherche sur l'éducation et les savoirs     Open Access   (Followers: 4)
Cakrawala Pendidikan     Open Access  
Calidad en la educación     Open Access   (Followers: 1)
Cambridge Journal of Education     Hybrid Journal   (Followers: 97)
Campus Legal Advisor     Hybrid Journal   (Followers: 2)
Campus Security Report     Hybrid Journal  

        1 2 3 4 5 6 7 8 | Last

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Alotrop
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2252-8075 - ISSN (Online) 2615-2819
Published by Universitas Bengkulu Homepage  [25 journals]
  • UJI AKTIVITAS ASAP CAIR CANGKANG BUAH KARET (Hevea brassiliensis) DAN
           APLIKASINYA DALAM PENGHAMBATAN KETENGIKAN DAGING SAPI

    • Authors: Haulia Dwi Putri, Sumpono Sumpono, Nurhamidah Nurhamidah
      Abstract: This research was aimed to know the degree of Fenol compound, total acid and the activity of liquid smoke of Rubber (Hevea brassiliensis) Seed Shell also the application in obstructing the rancidity of beef. The Fenol compound was determined by using Reagen Follon-Ciocalteu. The total acid was determined by using the method of titrated acids.The ability as the antioxidant was tested by DPPH method and the ability of obstructing the rancidity of beef was done by measuring the alteration of TBA value in beef as long as saved. The result was shown the fenol compound in liquid smoke of Rubber Seed Shell as much as 0,84 % and the acetic acid content was 4.725%. The antioxidant test was produced IC50 value as much as 101.27 ppm. According to the IC50 value which got from the test that the liquid smoke of Rubber Seed Shell were included in moderate category. The increment of the liquid smoke of Rubber Seed Shell were able to suppress the rancidity of beef during the storage time. It was marked by the decreasing of TBA value in beef as given in treatment A1 (liquid smoke 4% ) and A2 liquid smoke 6%. The treatment without the liquid smoke (A0) increased the TBA value from 0.05 mgMDA/Kg on day (0) to 0.615 mgMDA/Kg on day 6. The treatment of concentration liquid smoke 4% (A1)  increased  from  0.039  mgMDA/Kg  on  day  (0) to  0.395  mgMDA/Kg  on  day  6.  The  treatment  of concentration liquid smoke 6% (A2) increased from 0.031 mgMDA/Kg on day 0 to 0.209 mgMDA/Kg on day 6.
      PubDate: 2019-05-21
      Issue No: Vol. 2, No. 2 (2019)
       
  • PERBEDAAN HASIL PEMBELAJARAN PROBLEM BASED LEARNING (PBL) MENGGUNAKAN MIND
           MAPPING DAN SUMMARIZES PADA KELAS XI IPA MAN 1 KOTA BENGKULU TAHUN AJARAN
           2017/2018

    • Authors: Alfia Novera Indah Esa Kasih, Amrul Bahar, Salastri Rohiat
      Abstract: This study aims to determine differences in ProblemBased learning (PBL) using mind mapping ( PBL-mind mapping) and summarizes (PBL –summarizes) on the subject of ionic equilibrium in saline solution. The type of research used is quasi experimental research with population class XI IPA in MAN 1 Kota Bengkulu 2017/2018 academic year which amounted to 152 people and samples taken from normal and homogenous population by random sampling technique so that got sample that is class XI IPA 1 (PBL -Mind Mapping) as an experiment 1 with 36 people and class XI IPA 2 (PBL-Summarizes) as an experiment 2 which is 38 people.Data obtained in the form of cognitive domain learning results obtained from test results in the form of pretest and post-test. Data analysis used were mean score, normality test, homogeneity test, and hypothesis / t test with significance value ' = 0.05 calculated with SPSS 16.0 for Windows. Student learning outcomes in this study seen from the value of difference between pretest and post-test values. The average of pretest and post-test difference of experimental class 1 and 2 students were 56.11 and 49.21 and t-test obtained t-count value is greater than t-table (2.088> 1.99).The results of the data show that there are significant differences between the experimental classes 1 and 2 and show that the result of learning PBL using mind mapping is better with KKM achievement of 83.4% than the result of learning PBL using summarizes with KKM exhaust amounted to 68.4%.
      Issue No: Vol. 2, No. 2
       
  • BIOSORPSI ION LOGAM BERAT Cu(II) DAN Cr(VI) MENGGUNAKAN BIOSORBEN KULIT
           KOPI TERXANTHASI

    • Authors: Renaldi Adriansyah, Elyn Novta Restiasih, Nessi Meileza
      Abstract: There are several methods that have been used to remove and reduce the contamination of heavy metal ions.Among theseveral methods, biosorpsi is a cheap and high efficiency method. One of the organic materials that have potential to become heavy metal ion biosorbent was coffee skin.However, to improve the performance of coffee skin in adsorption of  heavy metal ions Cu (II) and Cr (VI) then biosorbent need to be modified through xanthation process.This xanthation process carried out by reacting the coffee skin with carbon disulfide compounds in an alkaline condition.This study aims to determine the ability of xanthated  coffe  skin biosorbentin adsorption of  Cu (II) and Cr (VI) metal ions and to know the optimum condition of the metal ion adsorption process byxanthated  coffe  skin biosorbent. From this research we got the optimum mass of Cu (II) and Cr (VI) metal ion adsorption of 0.45 and 0.6 gram. The optimum pH of Cu(II) and Cr(VI) metal ions adsorption occurs at pH 4.While the optimum contact time occurs at 100 minutes for Cu (II )metal ion adsorption  and 80 minutes for Cr (VI) metal ion adsorption. In addition, the maximum biosorption capacity of xanthated coffeskin biosorbent in adsorption of Cu (II) and Cr(VI) metal ions respectively 62.5 mg/g and 8.064 mg/g.  So it can be concluded that xanthated  coffe  skin biosorbenthave a better ability to adsorb Cu (II) metal ions than Cr (VI) metal ions.

      Issue No: Vol. 2, No. 2
       
  • PERBANDINGANHASIL BELAJAR SISWA MENGGUNAKAN MODEL PEMBELAJARAN KOOPERATIF
           TIPE MAKE A MATCH (MM) DANTEAM GAMES TOURNAMENT (TGT) PADA MATA PELAJARAN
           KIMIA DI KELAS X IPA MAN 1 KOTA BENGKULU

    • Authors: Nova Syofiana, Salastri Rohiat, Hermansyah Amir
      Abstract: This study aimed to determine differences in students’learning outcomes using cooperative learning model with Make A match and Team Games Tournament on chemistry subject of X IPA in MAN 1 Kota Bengkulu.A quasi-experimental (quasi experiment) was used as research model.Population of this research was all of  X IPA students which was137 students,then,there were 74 students as sample of this research taken from two classes, X IPA1 and X IPA 3.The techniques in data analysis used mean value,questionnaire analysis,normality test,homogeneity test,and t-test with significant ' = 0,05.The data collecting technique was done by usinga SPSS16 program for windows.The data on students learning outcomes were seen by differences between pre-test and post-test.Experiment 1class had 47.44  as the average of the differences and Experiment 2 class had43.79 as the average of the differences.The result showed that the students learning outcomes were influenced by learning motivation.Additionally,the data of students learning outcomes in both classes obtained from the learning motivation percentage which were 83,84% categorized as very good and 7,49% as good.From the resultof this study,it could be concluded that, generally,either the learning outcomes or students learning motivation in applying cooperative learning model,TGT type is higher than MM type.It showed that t count > t table,where 1.7515 > 1.6662 forlearning outcomes and 8.9804 > 1.6662 for students learning motivation.In the sameway,there is a significant difference between learning outcomes and students learning motivation by applying cooperative learning model in two types,namely Make A Match (MM) and Team Games Tournament (TGT). 
      Issue No: Vol. 2, No. 2
       
  • PEMANFAATAN SILIKA DARI PASIR PANTAI LINAU UNTUK MENGURANGI KADAR AMMONIUM
           DALAM LIMBAH CAIR TAHU

    • Authors: Chrisnia Nurbaiti, Rina Elvia, I Nyoman Chandra
      Abstract: The purpose of this study was to synthesize silica from Linau beach sand and its application as an adsorbent in reducing ammonium content in tofu liquid waste. Silica synthesis was carried out using the Sol-gel method using raw materials of 20 grams of refined sand, by dissolving sand into 160 mL NaOH 4 M while being heated and stirred constantly at 1050C for 90 minutes, and then filtered using filter paper. The residue obtained was calcined at 500oC for 30 minutes. The solid obtained is dissolved into 200 mL aqua DM so that it becomes a sodium silica solution. The sodium silicate solution was obtained, then added 1 M HCl solution drop by drop until it was obtained pH 7, and then left for 18 hours until a gel was formed and continued with washing using aqua DM and filtered with filter paper. The gel obtained was then dried at 1050C for 8 hours in the oven to obtain silica powder. Silica redemen produced from silica synthesis from Linau beach sand was obtained at 0.405%. The results showed that the synthesis silica from Linau beach sand was able to reduce ammonium content in tofu wastewater with the yield parameters in the form of tofu waste content decreasing at optimum mass 0, 25 grams, contact time 15 minutes with adsorption efficiency of 32.59%
      Issue No: Vol. 2, No. 2
       
  • PERBANDINGAN AKTIVITAS DAN HASIL BELAJAR KIMIA SISWA SMAN 2 ARGAMAKMUR
           PADA PEMBELAJARAN MENGGUNAKAN TEAM ASSISTED INDIVIDUALIZATION DAN GROUP
           INVESTIGATION BERBASIS KURIKULUM 2013

    • Authors: Ria Kemala Dewi, Sumpono Sumpono, Salastri Rohiat
      Abstract: This research was aimed to know  the differences between the student’s chemical learning activities and achievement by using a models called Team Assisted Individualization and Group Investigation based on Curriculum 2013. The samples in this research is class X MIA 3 (Team Assisted Individualization) and X MIA 6 (Group Investigation). The result of this research is learning activities and achievement and than the analysis used are the score and percentage of mean, normality tests, homogeneity tests, hypothesis tests. The observation result of student’s learning activities in the 1 and 2 of experimental class was 78.79% and 68,18%. The mean score of student’s achievement for experimental class 1 and 2 was 80,56 and 75,31. The result of t test obtained tcount > ttable, 10,6 > 1,0 for learning activities and 3,36 > 2,30 for achievement. It means there was a significant differences between the student’s chemical learning activities and achievement by using both models of learning.
      Issue No: Vol. 2, No. 2
       
  • KAPASITAS ADSORPSI ARANG AKTIF CANGKANG BINTARO (Cerbera odollam) TERHADAP
           ZAT WARNA SINTETIS REACTIVE RED-120 DAN REACTIVE BLUE-198

    • Authors: Siti Zaya Aisyahlika, M. Lutfi Firdaus, Rina Elvia
      Abstract: The objective of this research was to utilize bintaro shell waste (Cerbera odollam). The morphology of bintaro shell is similar with coconut shell and the contains of lignin and cellulose is higher than coconut. Bintaro shell waste used as activated charcoal to remove environmental pollution caused by synthetic dyes waste of batik industry. The adsorbents were then applied to remove of Reactive Red-120 (RR) and Reactive Blue-198 (RB) dyes in aqueous solution using Visible Spectrophotometer analysis method. Bintaro shell was dried, cut and carbonized at 400°C for 1 hour, then activated with ZnCl2 20% for 24 hours at 27°C and dryed in oven at 105°C for 30 minutes. The activated charcoal of bintaro shell has proven afford to adsorbing RR and RB dyes. The optimum conditions (pH, contact time, adsorbent weight and temperature) were determined to obtain best adsorption capacity. The optimum of conditions for RR occured at pH 2, contact time of 40 minutes and adsorbent weight 100 mg while RB occurred at pH 11, contact time of 60 minutes and adsorbent weight 50 mg and with each the temperature 30°C. At optimum conditions the adsorption isotherm followed Freundlich model with maximum adsorption capacity obtained for RR and RB were 332.6 and 243.9 mg/g, respectively.
      Issue No: Vol. 2, No. 2
       
  • PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE COURSE REVIEW HORAY(CRH)
           UNTUK MENINGKATKAN MOTIVASI DAN HASIL BELAJAR KIMIA SISWA SMA N 1 KOTA
           BENGKULU

    • Authors: 1Nurul Zulhulaifah, Nurhamidah Nurhamidah, Elvinawati Elvinawati
      Abstract: This study is a classroom action research applying the Course Review Horay learning model on the subject of basic chemical laws and chemical reaction equations in three cycles with four stages: planning, implementation, observation and reflection on each cycle aimed at improving motivation, activity and results learning chemistry of students of class X IPA 5 SMA N 1 Kota Bengkulu academic year 2017/2018. The study was conducted in March-April of 2018 with a total of 27 students, consisting of 17 women and 10 men. The data were obtained using questionnaire of motivation, posttest and observation sheet of teacher and student activity, which was processed using simple quantitative analysis technique, mean score of motivation questionnaire and observation sheet, percentage of classical absorption and classical learning completeness. From the results of this study it can be concluded that the application of CRH learning model proved able to increase the students' motivation, activity and chemistry learning achievement to reach the minimum mastery criteria of '75 in the third cycle. Student learning motivation increased every cycle from pre cycle up to cycle III 35,69% (low), 38,95% (low), 59,71% (medium) and 78,96% (high) respectively. The activities of teachers and students also increased each cycle in a row: teacher activity scores: 36, 38 and 38.5 with good category and student activity score: 29 (enough), 37,5 and 38 with good category. Student learning outcomes in cycle I obtained an average value of 54.3; 54.3% classical absorption and 16% classical learning completeness. In cycle II, the average score is 72.5; 72.5% classical absorption and 57.69% classical learning completeness. In cycle III, the average score is 78.76; 78.76% classical absorption and 84.61% classical learning completeness
      Issue No: Vol. 2, No. 2
       
  • Pembuatan Biofuel dari Limbah Cair PMKS dengan Katalis MoCo-HZ

    • Authors: Tyas Sri Muryati, Agus Sundaryono, Dewi Handayani
      Abstract: This research aims to convert vegetable oils contained in Palm Oil Mill waste (PMKS) into biofuels through the cracking process with MoCo-HZ catalyst . PMKS Liquid waste will be prepared with a process of a filtering, degumming, bleaching, warming, and free Fatty Acids determination.  The results obtained are then converted into biofuel with catalytic cracking with use of MoCo-HZ catalyst . Then the cracking products will to test for specified physical characteristics of biofuel eq : acid number , density, viscosity, pour point and cloud point. . The research results showed that the MoCo-HZ catalyst is able to convert vegetable oils contained in the PMKS liquid waste will be cracked into biofuel. Conversion yield obtained is amounting to 48.19%. The physical characteristics of the test results against biofuels produced from the cracking process has not met the standard of comparison from gasoline and kerosene. This is shown by the still high number of biofuel produced acids amounting to 1.72 mg KOH/gr. higher than the numbers of  sour gasoline (0.748 mg KOH/gr) and Kerosene (0.935 mg KOH/gr). The result of the test of density, viscosity, pour point and cloud point against biofuels produced from the cracking process have meet standard compared to gasoline and kerosene respectively 0.807 gr/cm for density, 1.056 cSt viscosity for viscosity , and 0 º C and 1.33 each º C to the freezing point and the cloud point..
      Issue No: Vol. 2, No. 2
       
  • PERBANDINGAN HASIL DAN MINAT BELAJAR KIMIA SISWA KELAS X IPA MENGGUNAKAN
           MODEL PEMBELAJARAN KOOPERATIF SNOWBALL THROWING DAN TALKING STICK PADA
           KURIKULUM-2013 DI SMAN 10 KOTABENGKULU

    • Authors: Rika Juwita Saputri, Sumpono Sumpono, Rina Elvia
      Abstract: The purpose of this research to determine the difference in learning outcome and interest of students on chemistry learning between class which applied snowball throwing and class which applied talking stick learning model on nomenclatur of  chemical compounds material in curriculum-2013 of  grade X IPA in  SMA Negeri 10 Bengkulu City. Research conducted is a research with the type of quasi experiment. Analysis of the data used are mean values, normality test, homogeneity test, and t-test. Chemistry learning outcome data obtained pretest and posttest value where average improvement value of cognitive learning result for snowball throwing class and talking stick class are 56,970 and 45,606. While the interest of students learning of  both experiment classes procure percentage are 81,567% and 75,373%. The result of t test with significant level (' = 0,05), then got value for tcount   >ttable is 4,734 > 1,669 for learning result and 3,596 > 1,669  for interest learning. The results showed that there were significant differences in learning outcomes and learning interest between classes that applied snowball throwing learning and classes that applied the talking stick learning model.
      Issue No: Vol. 2, No. 2
       
  • POTENSI SITOTOKSIK DAN ANTIBAKTERI EKSTRAK DAUN Laportea interrupta (L.)
           Chew (JELATANG AYAM) TERHADAP Staphylococcus aureus

    • Authors: Okti Mindi Safitri, Nurhamidah Nurhamidah, Hermansyah Amir
      Abstract: This research aims to determine the profile of phytochemicals, determine the level of cytotoxic extract toward the larva of Artemia salina Leach by using Brine Shrimp Lethality Test (BSLT) method, and to measure how much the activity of  antibacteria leaf ekstract of Laportea Interrupta (L.) Chew  (Jelatang Ayam )  toward the Staphylococcus aureus bacteria. The leaf of L. interrupta  (L.) Chew are dried and grinded well. The half of grinded sample are tested by phytochemical  profile and another one are ekstracted by using etanol liquid for three days then they are evaporated. The result of fitokimia leaf L. interrupta  (L.) Chew test contains secondary metabolite alkaloid,  tanin, terpenoid,  and saponin. The result of cytotoxic extract of leaf L. interrupta  (L.) Chew toward the A. salina Leach is obtained LC50 for 93,33 ppm, so, the L. interrupta  (L.) Chew is toxic because it is in the range of 31 ppm to 1000 ppm and it can be potentially as a anticancer agents. The eksract of Jelatang Ayam leaf can obstruct the growth of S. aureus, on 5 x 104 clear zone concentration that formed 9 mm being medium categorized. The more concentration of the Jelatang leaf ekstract then more its obstruction energy.
      Issue No: Vol. 2, No. 2
       
 
 
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