Experiment of Industrial Waste Absorption Using Activated Carbon From Coal of Tanjung Tabalong, South Kalimantan

DOI: 10.17014/ijog.v6i4.130Activated carbon made from Tanjung Tabalong coal was investigated its absorption capability to organic and inorganic elements in industrial waste. Coal was carbonized at low temperature of 600C to produce semicoke, and then was activated at temperature of 700C with activation time of 120 minutes with water steam flow. The absorption capability of activated carbon to chemical oxygen demand (COD) was performed using 2.5 and 9.0 g activated carbon for 250 ml and 300 ml COD waste respectively. The agitation time of each experiment were 30, 60, and 90 minutes. Atomic absorption spectrophotometer (AAS) was used to analyze the COD waste. The result shows that 2.5 g activated carbon could absorb COD waste ranging from 6.9-67.5 %, while the utilization of 9 g could absorb COD waste ranging from 88.9 - 100 %. The more activated carbon and the longer time of agitation used in this experiment, the more the absorption of COD waste

Penerapan Pembelajaran Model Problem Based Learning (Pbl) Untuk Meningkatkan Keterampilan Proses Sains Dan Motivasi Belajar Siswa Pada Materi Alat-alat Optik

Penelitian ini bertujuan untuk mengetahui peningkatan keterampilan proses sains dan motivasi belajar siswa terhadap penerapan model pembelajaran Problem Based Learning. Penelitian ini dilakukan dengan menggunakan rancangan eksperimen dengan The Randomized Pre-test Post-test, Control Group Design yang dilaksanakan pada SMP Negeri 1 Gandapura, semester genap Tahun Akademik 2014/2015. Pada siswa kelas VIII (delapan) yang terdiri dari kelas eksperimen 25 siswa dan kelas kontrol 24 siswa. Pengumpulan data dilakukan dengan tes awal dan tes akhir untuk keterampilan proses sains, angket untuk mengetahui motivasi belajar siswa, lembar observasi untuk mengetahui kegiatan guru dan siswa selama proses belajar mengajar dengan menggunakan model Problem Based Learning. Hasil uji normalitas dan homogenitas menunjukkan bahwa data berdistribusi normal dan homogen. Uji t terhadap N-Gain kedua kelas menunjukkan nilai 0,00<0,05 yang artinya terjadi perbedaan yang signifikan antara kedua kelompok. N-Gain tertinggi keterampilan proses sains setiap indikator kelas eksperimen 0,63 pada indikator mengklasifikasi individual/kelompok dan terendah 0,24 pada menerapkan konsep. N-Gain tertinggi pada kelas kontrol 2,88 pada mengklasifikasi sedangkan N-Gain terendah 0,13 pada indikator berkomonikasi. Berdasarkan hasil penelitian maka dapat disimpulkan bahwa penerapan pembelajaran Problem Based Learning dapat meningkatkan keterampilan proses sains dan motivasi belajar siswa

PROFANITIES FOUND IN TONY KAYE’S FILM “AMERICAN HISTORY X”

Penelitian ini bertujuan untuk menganalisis jenis-jenis profaniti yang ditemukan dalam film Tony Kaye "American History X" berdasarkan teori Patridge. Penelitian ini menggunakan metode deskriptif kualitatif. Data diperoleh dari Film 'American History X' dalam bentuk kata, frasa, dan kalimat. Data dikumpulkan dengan cara menonton film secara intensif, mengidentifikasi ujaran yang mengandung profaniti yang digunakan oleh karakter dan menulis kata-kata yang ditemukan dalam film. Hasil penelitian menunjukkan bahwa dalam film "American History X" oleh Tony Kaye terdapat ada lima tipe yang ditemukan, yaitu seven dirty words, strong other words, excretory words, sexual words, dan mild other words

Biodistribusi Radiofarmaka Tc99m DTPA pada Pemeriksaan Renografi

Reasearch about biodistribution on 25 patients with renography examination using the technique of in-vivo and in-vitro in nuclear medicine has conducted. The purpose of this reasearch is to determinate the value of activity on examination of kidney and bladder, determine biodistribution Tc99m DTPA on examination of the kidney and bladder, futhermore to determine biological half-life time in the kidney. Reasearch carried out by using radioisotope Tc99m with DTPA which carrier substances for examination of the kidney. Renography examination is done by injecting Tc99m DTPA intravenously into the patient\u27s arm as much as 4 to 8 mCi conjuction with posterior imaging in the kidney area in 10 to 15 minutes by using a gamma camera. Based on percentage of activity in getting from both kidneys, the left kidney is higher in compared to the right kidney. As for the bladder in second patients increased very significant due to illness in patients with chronic renal failure so that the kidney function is not functioning properly and radiopharmaceutical absorbed more in the bladder. The results of biodistribution activity Tc99m DTPA percentage is high on the bladder. The results obtained from the average half-life time (0,235 ± 0,001) hours. While the results of Tc99m DTPA effective half-life time in the body of each patient in the range of 0,5 to 2 hours. First patients has a longest biological half-life time. Differences in the effective half-life time of each patient is affected by the elimination of biological or biological half-life time of each patient is different too

Pengaruh Penggunaan Media Pembelajaran Power Point dan Audiovisual terhadap Hasil Belajar Ipsekonomi Siswa Kelas VII SMPN 6 Siak Hulu Kabupaten Kampar

The learning result is the ability of the student after he received alearning experience, to determine the results of the study carried out using the test.Basically, student learning outcomes in social studies Economics at SMPN 6 Siak HuluKampar regency still low. This happens because teachers often use the conventionalmethod of learning which is still dominated by lectures so monotonous, and the lack ofuse of media subjects during teaching and learning process. Given this research, aimsto determine the effect of the use of instructional media and audiovisual power pointtowards learning outcomes IPS Economy class VII SMPN 6 Siak Hulu Kampar regency.This study uses primary data and secondary data. The population in this study were allstudents or a student of class VII SMPN 6 Siak Hulu Kampar numbered 80 students.samples taken in this study 54 students appointed intentionally (purposive). This studyshows that in general learning media in the form of power point, pictures and videossignificant effect by 19%

Peranan Orang Tua Dan Guru Dalam Memotivasi Belajar Siswa SMP Di Kawasan Letusan Gunung Kelud Kabupaten Blitar Jawa Timur

Left without adequate school learning facilities the SMPN students at the 3 villages, namely Garum, Gandusari and Nglegok in the district area of Blitar, are now studying at various learning centers located in some private houses. This study is aimed at obtaining empirical data concerning the role of parents as well as of teachers in motivating these students to study by using limited available facilities. The result show among others that there is no significant correlation between the role of teachers correlates significantly

Perancangan Website Pendukung Pemasaran Rumah Sakit Promedika

Internet berkembang sangat cepat. Orang-orang dapat mengakses internet dengan mudah. Banyak informasi yang dapat dikumpulkan melalui internet. Seperti informasi tentang penjualan barang online dan pemasaran secara online. Internet adalah tempat yang baik untuk memasarkan informasi tentang Perusahaan yang bergerak di bidang jasa dan pelayanan. Internet sangat murah dan efektif karena dapat diakses kapan pun jug