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PENGEMBANGAN BUKU PANDUAN PRAKTIKUM KIMIA HIDROKARBON BERBASIS KETERAMPILAN PROSES SAINS DI SMA

Jurnal Penelitian Pendidikan Kimia: Kajian Hasil Penelitian Pendidikan Kimia Vol 1, No 1 (2014)
Publisher : Jurnal Penelitian Pendidikan Kimia: Kajian Hasil Penelitian Pendidikan Kimia

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Abstract

Development of Cemistry Lab Manual for Hydrocarbons Based Science Process Skills at Senior High School. This research aims to produce a high school chemistry lab manual for hydrocarbons subject with science process skill-based which is valid, practical and has a potential effect. The method used is Development Research with the reference of model ADDIE (Analysis, Design, Development, Implementation, Evaluation) and the formative evaluation of Tessmer, such as Evaluation Expert Review, One-to-One, Small Group, and Field Test. The results show the score of validity is 128 which is included in the category of very valid, the practicality score is 1337 which is included in the category of very practical and the students’ final test results indicate that the manual book has the potential effect of 81,21. These results show that the chemistry lab manual with science process skill-based is valid, practical and has a potential effect.

Pemanfaatan Jerami Padi Sebagai Penyerap Zat Warna Procion Sisa Pencelupan Industri Kain Jumputan Palembang

Jurnal Penelitian Sains Vol 11, No 2 (2008)
Publisher : Faculty of Mathtmatics and Natural Sciences

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Abstract

Telah dilakukan penelitian penggunaan jerami padi sebagai material penyerap zat warna procion dari limbah cair jumputan. Jerami padi diaktivasi dengan aktivator NaOH 15%. Kondisi terbaik penyerap zat warna procion oleh jerami padi dilakukan dengan cariasi berat jerami, waktu kontak, ukuran partikel jerami dan Ph media penyerap. Konsentrasi zat procion pada semua perlakuan ditentukan dengan menggunakan Spektronik G 20. Hasil penelitian menunjukkan bahwa penyerapan terbaik jerami padi terhadap procion pada berat 1,5 g, waktu kontak 60 menit, ukuran partikel 60 mesh dan pH 5 untuk 50 mL procion murni berkonsentrasi 50 mg/L. Konsentrasi procion awal di limbah adalah 376,27 mg/L. Efektivitas penyerapan jerami padi terhadap procion yang terkandung dalam sisa pencelupan industri kain jumputan pada kondisi terbaik sebesar 34,98%.

ANALISIS DINAMIKA SEBARAN SPASIAL SEDIMENTASI MUARA SUNGAI CANTUNG MENGGUNAKAN CITRA LANDSAT MULTITEMPORAL

Jurnal Fisika FLUX Vol 11, No 1 (2014): Jurnal Fisika FLUX Edisi Februari 2014
Publisher : Lambung Mangkurat University Press

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Abstract

ABSTRACT: Given the pivotal role played by the Cantung River for the supervision and management of the public good becomes important. Incoming sediment load can damage the uncontrolled flow conditions of the Cantung river and estuary. Observations of suspended sediment can take advantage of multitemporal Landsat imagery. This study uses Landsat satellite image data corrected 5TM March 5, 1992 data acquisition path/row 117/62, Landsat data acquisition 5TM 22 May 1997 path/row 117/62, Landsat data acquisition 5TM March 27, 2000 the path/row 117/62. Several stages in processing the image, that is the conversion of DN to reflectance values, cropping, water-not water secession, and the class divide sediment concentration by density slicing technique. Spatial distribution of suspended sediment in the estuary of the Cantung River Landsat image processing results 5TM March 5, 1992, Landsat 5TM May 22, 1997, and March 27, 2000 Landsat 5TM show distribution patterns of suspended sediment from the River Cantung the same direction, that is northeast. Sediment concentrations were detected in the Landsat image processing 5TM March 5, 1992 the largest-value 27,564096 mg/l and the smallest 14,886048 mg/l. Sediment concentrations were detected in the Landsat image processing 5TM May 22, 1997 the largest-value 121,476776 mg/l and the smallest 12,647415 mg/l. Sediment concentrations were detected in the Landsat image processing 5TM March 27, 2000 most valuable 159,256704 mg/l and the smallest 10,584161 mg/l. Getting away from the effect Cantung River estuary sediment concentration of river flow Cantung tends to get smaller. Changes in the distribution area of the sediments of March 5, 1992 until March 27, 2000 amounted to 450 m2/year. Keywords: Remote Sensing, Sedimentation, Landsat, Cantung River