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Cassava Peel Extract as Raw Materials for Making Paper : Utilization of Waste as Environmental Conservation Kurnia, Yogi; Jauhariyah, Durrul; Madiyo, Madiyo; Nugraha, Yoga; Akhmansyah, Muhammad; Widiani, Nurhaida
International Journal of Hydrological and Environmental for Sustainability Vol. 1 No. 3 (2022): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v1i3.170

Abstract

Today, the continuous use of paper makes various countries experience a tree crisis due to continuous logging. Therefore, the obstacle faced in making paper is the lack of availability of wood raw materials used in the manufacturing process. Currently, various countries are starting to think about other alternatives in paper making. In this study, the use of cassava peels in papermaking can be a solution in meeting the needs of raw materials for papermaking because the content contained in cassava peels can be used as material for making pulp. The experiment of making cassava pulp was carried out using the organosolv process, which is cooking to separate the fibers using organic chemicals. The chemical used in the cooking process is ethanol. The research method used was Completely Randomized Design (CRD). The experiment was carried out with 3 treatments and 3 repetitions. with each concentration of ethanol in the cooking treatment that is 50%, 70% and 90%. Data analysis was carried out by measuring the thickness, gram, age, and tensile strength of the paper. From the experiments conducted, it is proven that using cassava peel can be used as an additional material in making paper. The most effective concentration of ethanol is at a concentration of 90%.
Pengaruh Penggunaan Metode Drill pada Materi Kalor terhadap Hasil Belajar Fisika Siswa Jauhariyah, Durrul; Dardiri, Dardiri
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 6 No 1 (2017): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v6i1.907

Abstract

Penelitian ini bertujuan untuk mengetahui: (1) perbedaan hasil belajar kognitif siswa yang diajar menggunakan metode drill dengan siswa yang menggunakan metode ceramah; (2) pengaruh penggunaan metode drill terhadap hasil belajar kognitif siswa kelas X MAN 1 Bandar Lampung. Jenis penelitian ini adalah kuasi eksperimen dengan pretest posttest control group design. Populasi pada penelitian ini seluruh siswa kelas X MAN 1 Bandar Lampung. Pengambilan sampel dilakukan dengan teknik cluster random sampling, sehingga terpilih kelas X.MIA4 sebagai kelas eksperimen dan kelas X.MIA1 sebagai kelas kontrol. Instrumen yang digunakan adalah soal pre-test dan soal post-test. Teknik analisa data menggunakan uji-t dan regresi. Hasil penelitian menunjukkan bahwa: (1) terdapat perbedaan hasil belajar kognitif siswa yang diajar menggunakan metode drill dengan siswa yang menggunakan metode ceramah yang ditunjukkan oleh nilai signifikansi pada uji t sebesar 0,033; (2) terdapat pengaruh penggunaan metode drill terhadap hasil belajar kognitif siswa kelas X MAN 1 Bandar Lampung yang ditunjukkan oleh koefisien regresi positif sebesar 0,758.The Effect of Drill Method on Heat Material Toward Students’ Physics Learning OutcomesThe purpose of this research was (1) the difference of the students’ cognitive study results that used drill method and lecture method; (2) the effect of using drill methods concerning the study result of learning in class X MAN 1 Bandar Lampung. This was quasi-experiment research with Pretest-Posttest Control Group Design. The population was all of X grade students of MAN 1 Bandar Lampung. Taking samples in this research was done by a cluster random sampling technique, so X MIA4 was chosen as the experimental class and X MIA1 was chosen as the controlling class. The Instrument used in this research consist of pretest and posttest question. Then, the technique of analyzing data used T-test and regression. The results of this research show that (1) there was a difference of the student’ cognitive study results that used drill and lecture method with significance of t-test 0,033; (2) there was an effect of using drill method concerning about the students’ cognitive study result with coefficient of regression 0,758.