PERBEDAAN EFEKTIVITAS PENURUNAN H2S DENGAN MENGGUNAKAN MEDIA ARANG AKTIF DAN ZEOLIT PADA LIMBAH CAIR INDUSTRI PENYAMAKAN KULIT DI BPTIK-LIK KABUPATEN MAGETAN

Industri penyamakan kulit merupakan industri yang mengolah kulit mentah (hides dan atau skin menjadi kulit tersamak leather dengan menggunakan bahan penyamak. Kadar sulfida (sebagai H2S pada limbah cair BPTIK-LIK adalah sebesar 5,36 mg/l, dimana kadar sulfida (sebagai H2S menurut Kep.Gub Jawa Timur No.45 Tahun 2002 adalah 0,8 mg/l. Penelitian ini bertujuan mengetahui perbedaan efektivitas penurunan H2S dengan menggunakan media arang aktif dan zeolit pada limbah cair industri penyamakan kulit di BPTIK-LIK Kabupaten Magetan. Jenis penelitian yang digunakan yaitu penelitian true eksperimental. Analisis data yang digunakan untuk menguji hipotesis adalah dengan uji one way anova dengan taraf signifikansi 95 %. Hasil penelitian menunjukkan adanya penurunan kadar H2S setelah perlakuan dengan media arang aktif dan zeolit. Kadar H2S air limbah sebelum melalui media arang aktif dan zeolit yaitu sebesar 1,014 mg/l, setelah melewati kontrol rata-rata 0,995 mg/l sehingga terjadi penurunan sebesar 0,019 mg/l. Setelah melewati media arang aktif diameter 0,3 mm adalah 0,665 mg/l,diameter 0,25 mm rata-rata adalah 0,703 mg/l dan diameter 0,18 mm rata-rata adalah 0,695 mg/l. Sedangkan kadar H2S setelah melewati media zeolit diameter 0,30 mm adalah rata-rata 0,797 mg/l, diameter 0,25 mm rata-rata adalah 0,785 mg/l dan diameter 0,18 mm rata-rata adalah 0,762 mg/l. Dari uji statistik one way anova didapatkan ada perbedaan yang signifikan pada a=0,05, antara kadar H2S sebelum dan sesudah melalui media arang aktif dan zeolit dengan pvalue= 0,0001. Tetapi tidak ada perbedaan yang signifikan pada a=0.05, antara kadar H2S sesudah melalui media arang aktif dan zeolit dengan pvalue = 0.893. Penelitian ini masih perlu diketahui kualitas dan jenis arang aktif dan zeolit dalam menurunkan karakteristik air limbah selain gas H2S. Kata Kunci: Kadar H2S, arang aktif, zeolit THE DIFFERENCE OF H2S DEGRADATION EFFECTIVENESS BY USING ACTIVE CHARCOAL AND ZEOLITE MEDIA IN WASTE WATER OF LEATHER TANNING INDUSTRY AT BPTIK-LIK MAGETAN REGENCY Leather tanning represents industry which manufactured raw leather(hides and or skin) become husk tanned (leather) by using tanner substance. sulfide concentration (as H2S)according to decision of Governor East Java No.45 year 2002 is 0,8 mg/l. This research aim to determine the difference of H2S degradation effectiveness by using active charcoal media and zeolite of liquid waste at leather tanning industrial in BPTIK-LIK Magetan Regency. Research type before and after design. Analyze data used to test hypothesis is by one way anova test with significant level is 95 %. Research result show the axistence of H2S concentration degradation after treatment with active charcoal media and the zeolite. H2S concentration of liquid waste before through active charcoal media and the zeolite that is equal to 1,014 mg/l, after through average control 0,995 mg/l so that occured the degradation equal to 0.019 mg/l. After through active charcoal media of diametre 0,3 mm average is 0,665 mg/l, diametre 0,25 mm average is 0,703 mg/l and diametre 0,18 mm average 0,695 mg/l. While H2S concentration after through diametre zeolite media 0,30 mm average is 0,797 mg/l, diametre 0,25 mm aof average is 0,785 mg/l and diametre 0,18 mm of average 0,786 mg/l. From one way anova statistical test got the difference which significant of a=0,05 between H2S concentration before and hereafter through filter of active charcoal and the zeolite by pvalue=0,0001. But there no difference which significant of a=0,05, between H2S concentration hereafter through active charcoal media and the zeolite by pvalue=0,893. This research still necessarily to determine quality and type of active charcoal and zeolite in degrading liquid waste characteristic besides gas H2S. Keyword : H2S Concentration, active charcoal, zeolit

PENGGUNAAN STRATEGI JOYFUL LEARNING UNTUK MENINGKATKAN HASIL BELAJAR MATEMATIKA SISWA SMP KELAS VII A PADA MATERI PERSAMAAN LINIER SATU VARIABEL

Abstrak: Penelitian Tindakan Kelas (PTK) dengan menggunakan Strategi Joyful Learning ini dilakukan dengan tujuan untuk meningkatkan hasil belajar matematika siswa kelas VII pada materi Persamaan Linier Satu Variabel. Yang menjadi subjek dalam penelitian ini adalah siswa kelas VII A SMP Negeri 5 Kota Bengkulu yang berjumlah 32 siswa. Teknik pengumpulan data yang dilakukan pada peneliltian ini antara lain observasi, wawancara, tes dan dokumentasi. Penggunaan strategi joyful learning dilakukan dalam 2 siklus yang terdiri dari tahap perencanaan, tahap pelaksanaan, tahap observasi serta tahap refleksi. Nilai rata-rata kelas pada pra siklus sebesar 48,75%, setelah diberikan tindakan pada siklus I dengan menggunakan strategi joyful learning nilai rata-rata kelas mengalami sedikit peningkatan yaitu sebesar 67,65%%, sehingga dilakukan siklus II yang menunjukkan peningkatan nilai rata-rata kelas yaitu sebesar 85% dengan 27 siswa yang tuntas atau 84,37% . Berdasarkan hasil pada siklus I dan II hal ini menunjukan bahwa adanya peningkatan hasil belajar siswa dengan Penggunaan strategi joyful learning, sehingga dapat disimpulkan bahwa strategi joyful learning dapat meningkatkan hasil belajar matematika siswa. Kata kunci: strategi joyful learning, hasil belajar, Persamaan Linier Satu Variabel.

PEMBELAJARAN FISIKA MELALUI METODE EKSPERIMEN UNTUK MELATIHKAN PERILAKU BERKARAKTER PADA SISWA MAN TLOGO BLITAR

The aims from this research to describe the behavior of students when they experiments in teaching Physics process. The subject from this research are students in MAN Tlogo Blitar at grade x year 2009/2010 they are 80 students. Instrument and technique for collect the data use questionnaires and interviews to students about the experimental method that has been done on the learning of teaching Physics process. Descriptive analysis of quantitative data. Some of the findings in the field man Tlogo Blitar students in conducting experiments in physics learning: (1) was critical of 69%, (2) be persistent and tenacious 73.2% (3) greatly appreciate the time 60%, and (4) train the environmentally conscious nature 77.5%. Based on the results of the study, suggested the following matters: (1) improvement of facilities related to physics, (2) reward and motivation in students, (3) preparation of schedules in the laboratory practicum and (4) division of picket duty to keep clean laboratories. Kata kunci: Physic, Experiment, Character

KENDALA-KENDALA GURU DALAM MENGIMPLEMENTASIKAN KURIKULUM 2013 DI SD NEGERI 7 TEUPAH BARAT KABUPATEN SIMEULUE

Banda Ace

CARA MEMBUAT MEDIA PEMBELAJARAN ONLINE MENGGUNAKAN EDMODO

Saat ini peserta didik terbiasa menggunakan internet. Penggunaan Internet untuk belajar bukan hanya untuk media sosial dan game online sebagai media pembelajaran namun dapat yang dapat mendukung pembelajaran. Penggunaan pembelajaran online sebagai media pembelajaran sistem baru, mendorong pelaksanaan pembelajaran lebih efektif. Dengan media pembelajaran online dimungkinkan banyak pelajaran sehingga dapat memberikan layanan yang lebih memuaskan kepada siswa. Salah satu aplikasi di internet yang dapat digunakan untuk pembelajaran online adalah media yang Edmodo. Edmodo adalah jaringan berbasis lingkungan sekolah sosial (lingkungan berbasis sekolah). Edmodo dapat membantu guru membangun kelas virtual sesuai dengan kondisi pembelajaran di kelas, berdasarkan pembagian kelas nyata di sekolah, di mana kelas-kelas yang terkandung dalam tugas, kuis dan tugas pada akhir setiap pelajaran. Dengan menggunakan media Edmodo pembelajaran online, interaksi dan komunikasi di dalam kelas dapat didirikan seperti di kelas konvensional, di mana setiap siswa dapat dengan bebas berkomunikasi dan berbagi dengan guru dan teman sekelas, untuk menanggapi materi yang disampaikan.Kata Kunci: Internet, e- learning, Edmod

PENGARUH PERSEPSI SISWA TENTANG GAYA MENGAJAR GURU DAN GAYA BELAJAR TERHADAP HASIL BELAJAR SISWA KELAS XI JURUSAN AKUNTANSI SMK NEGERI 12 JAKARTA

NURITA HIDAYATI. The Influence of Student Perceptions of Teaching Styles and Learning Styles Of Learning Outcome Student SMK Negeri 12 Jakarta. Faculty of Economics, University of Jakarta. 2015. This research purpose is to find out the influence of Student Perceptions of Teaching Styles and Learning Styles to Learning Outcome Student SMK Negeri 12 Jakarta, either partially or simultaneously. This type research is survey method with quantitative approach. Data recording, interview and questionnaire are research technique. Total population in this study were 72 students with a sample of 62 student of XI Accounting class in SMK Negeri 12 Jakarta. The data analysis technique used is multiple linear regression, the classic assumption test, and test hypotheses consisting of t test and F test. Based on the analysis of the data found that there was a partial effect between the perception of teaching styles to learning outcomes. Can be seen from the results of data analysis showed t count 3.605 t greater than 1,987. Meanwhile, the partial use of Learning styles are effected by learning outcome, it is seen from the results of data analysis showed t table count 4.893 t greater than of 1,987. Simultaneously there is influence between the perception of teachers teaching styles and learning styles on learning outcomes. Can be seen from the results of data analysis showed F table value of 42.546 is greater than the value of 3.15 F . There was a significant positive influence of perceptions of teachers' teaching styles and learning styles to learning outcomes of students on the subjects of accounting with R for 0,768 and determination coefisien for (R) 2 table was 59.1%. Key word : teaching style, learning style and learning outcome coun

TEACHERS’ DIFFICULTIES IN TEACHING NARRATIVE ESSAY AT THE FIRST YEAR OF SMAN 1 TEMPULING INDRAGIRI HILIR

The subject of the research was English teachers of SMAN I Tempuling, and the object of this research was the difficulties encountered by teachers in teaching narrative essay. While, the formulations of the problems consisted of; how is the teachers’ difficulty in teaching narrative essay at the first year of SMAN I Tempuling?, and what factors influence the difficulties of teaching writing narrative essay at the first year of SMAN I Tempuling?. Furthermore, the aims of the research were to find out and reveal the information about the difficulties encountered by teachers in teaching narrative essay and the factors that influence difficulties of teaching writing at the first year of SMAN I Tempuling In this research, the data were collected by using observation technique. From the data gathered, the most dominant factors that cause teachers difficult in teaching narrative essay at the first year of SMAN I Tempuling such as; various of the students, because every students had different in age, need and ways in getting knowledge. Lack of media for supporting teaching and learning process. In teaching the teacher seldom changed their method. They often use speech method. There was not program interaction with the environment moreover foreigner. In the classes, there are only 1 - 5 students like English so that learning process was not alive and the student’s ability in narrative is uneven. There was not many respond from the students in teaching and learning process, and they are just quite and do not want to ask even if they did not understand. Level of anxiety, the students were nervous when teacher asked them something. In analyzing the data, the writer used descriptive qualitative with percentage technique by using the four categories based on Anas Sudjana’s; If the difficulties acquired is 76%-100%, it is categorized into high, 51%-75% is categorized enough, 26%-50% is categorized less, and less than 25% is categorized low. Based on the data analysis, the difficulties encountered by the teachers in teaching narrative essay at the first year of SMAN I Tempuling is categorized into high. This can be evidenced from the percentage acquired is that 76.6%. Then, there are some factors that influence the difficulties encountered by teachers in teaching narrative essay; facilities, environment, the cultures in the classroom, and the students’ attitude

ANALISIS FAKTOR-FAKTOR KEBIJAKAN HUTANG YANG BERPENGARUH TERHADAP NILAI PERUSAHAAN (Pada Perusahaan Manufaktur Industri Logam Yang Terdaftar Di Bursa Efek Indonesia Periode 2011-2015)

Tujuan penelitian ini adalah untuk menganalisis pengaruh dari variabel Faktor-faktor Kebijakan Hutang yaitu, likuiditas (CR), Struktur Aktiva, Profitabilita (GM) terhadap kebijakan hutang (DER) dan pengaruh kebijakan hutang  terhadap nilai perusahaan (PBV) pada perusahaan manufaktur yang tercatat di Bursa Efek Indonesia periode 2011-2015. Penelitian menggunakan metode purposive sampling untuk pengambilan sampel. Data diperoleh berdasarkan publikasi Indonesian Capital Market Directory (ICMD), diperoleh jumlah sampel sebanyak 15 perusahaan manufaktur. Hasil analisis menunjukkan bahwa besarnya kemampuan prediksi dari ketiga variabel independen ( Likuiditas 96,3%, Struktur Aktiva 52,1%, Profitabilitas 13,9 %) terhadap kebijakan hutang yang ditunjukkan dari besarnya adjusted R2, sisanya dipengaruhi oleh variabel lain diluar model. Sedangkan untuk variabel dependen price book value adjusted R2 berarti bahwa besar variasi variabel price book value yang dapat diterangkan oleh variasi variabel kebijakan hutang (DER) adalah sebesar 77,2% persen sedang sisanya dipengaruhi variabel lain di luar model penelitian

Asas Beban Pembuktian Terbalik Terhadap Tindak Pidana Korupsi Dalam Sistem Hukum Di Indonesia

The reverse system of evidence as regulated in as stipulated in Indonesian positive law, namely as stipulated in Law No. 31/1999 on the Eradication of Corruption. Law No. 31/1999 on the Eradication of Corruption. Then The next problem that arises is whether the application of the reversed system of evidence in proving corruption cases can prevent or prevent corruption. system in proving corruption cases can prevent or reduce and even eliminate corruption in Indonesia completely. reduce or even eliminate corruption in Indonesia completely. This research is based on the theoretical framework of Roscoe Pound argues that Law as a tool of social engineering, law as a tool of society reform. society renewal. This concept was reported by Muchtar Kusumaatmadja and adapted to the conditions of Indonesia into law as a means of social engineering. adapted to Indonesian conditions into law as a means of community renewal. society. Law must be used as a means to renew and solve all problems in society. solve all problems that exist in society, including the problem of corruption. corruption. The reverse proof system is a special rule established by the government through the issuance of the government through the issuance of the provisions of Law No. 31 of 1999, as amended by Law No. 20 of 2001 on the Eradication of Corruption. as amended in Law No. 20 of 2001 concerning the Eradication of Corruption. Corruption. Because the evidentiary system applied in corruption crimes is different from that applied in corruption crimes. corruption is different from that applied in procedural law in general. procedural law in general. Keywords: Reverse proof, criminal offense crime, corruptio

Water Management “Tabat System” in Carbon Dioxide Mitigation and Vulnerability to Fire on Peatland

The conservation measures of peat or peat maintain under natural conditions many proposed to address the increase in carbon emissions from land use change and efforts to minimize of fire, but it can not entirely implemented due to peat land has the potential for development of the agricultural commodities is supported by extensive area. Peatlands can be productive agricultural land with appropriate methods. Water management is required to regulate groundwater levels which is suitable for plants, nature conservation and restore hydrological conditions, such as reducing the vulnerability to fire. The percentage of water content vertically and functional groups of organic materials that have both hydrophilic and hydro phobic properties can be an indicator of vulner ability to fire. This research was conducted by survey method and then field sampling on land use rubber. Water management carried out with the installation of water-gate in the drainage channels (Tabat System). There are two experimental units in peatland, namely: 1) the drainage channel is equipped with the water-gate/Tabat (KST), Tabat size adjusted to the channel dimensions, and 2) there are no water-gate on the drainage channel (KNT). The parameters are observed of CO2 fluxes, ground water levels, water content and functional groups of organic matter. The purpose of this study was to determine the role of “tabat system” in mitigating CO2 emission sand vulner ability tofire. The results showed that the water management “tabat system” can reduce CO2 emissions by 47.6%, reducing hydrophobic properties of peat (0-50 cm soil depth) of 6.6% and is able to prevent loss of water-holding ability of fibric peat by 26.6%. This indicates that water management measures is required as one effort to maintain of peat to remain moist condition, so that changes in peat properties of hydrophilic become hydrophobic can be prevented, and reduce peat vulnerability to fire.Keywords: Carbon dioxide emissions, Peatland, Vulner ability to fire, Water management [How to Cite: Siti Nurzakiah, Nurita and Dedi Nursyamsi. 2016. Water Management “Tabat System” in Carbon Dioxide Mitigation and Vulnerability to Fire On Peatland. J Trop Soils 21: 41-47. Doi: 10.5400/jts.2016.21.1.41][Permalink/DOI: www.dx.doi.org/10.5400/jts.2016.21.1.41]&nbsp