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All Journal Lensa: Jurnal Kependidikan Fisika
Sukainil Ahzan
Program Studi Pendidikan Fisika, FPMIPA IKIP Mataram
Astronomy Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Physics

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Time Stirring Effect of Chitosan from Shrimp Shells as Gold Absorbent Dwi Sabda Budi Prasetya; Sukainil Ahzan
Lensa: Jurnal Kependidikan Fisika Vol 7, No 2: December 2019
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (717.822 KB) | DOI: 10.33394/j-lkf.v7i2.2685

Abstract

This study aims to analyze the effect of chitosan stirring time from shrimp shells as gold absorber. Experimental research was conducted in this study, where the manufacture of chitosan from shrimp shells began with demineralization (mineral removal) using 1.5 M HCl, deproteination (protein removal) using 3.5% NaOH and deacetylation (acetyl removal) using 60% HCl. The chitosan formed was weighed 0.1 gram (as many as five samples) and then stirred in a 10 ppm Au solution, with a stirring time of 0, 10, 20, 30, and 40 minutes, and its absorption ability to gold was analyzed using AAS (Atomic Absorbsion Spectroscopy) and obtained percentage of absorption respectively 24.79%, 50.89%, 45.64%, 40.52% and 37.87%. From the results of the study, it was found that there was an effect of chitosan stirring time from shrimp shells as gold absorber and the highest absorption at 10 minute stirring was 50.89%.
THE EFFECT OF OSILATION AND WAVE ANIMATION TOWARD STUDENT’S PHYSIC LEARNING ACHIEVEMENT Neneng Rulyati; Sukainil Ahzan; M. Fuaddunazmi
Lensa: Jurnal Kependidikan Fisika Vol 4, No 1: June 2016
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (464.379 KB) | DOI: 10.33394/j-lkf.v4i1.31

Abstract

This research was aimed at find out the effect of using vibration animation and swell toward students physics in academic year 2015/2016. This research was experimental research. The population in the research is all of the students VIII SMP Negeri 3 Monta Bima. The researcher uses cluster random sampling for took the sample, those were took two class VIIIA as experimental class, and VIIIB as control class. The result in this research used normality uses SPSS 17 was significant > 0,05 in succession was 0,185 and 0,033 for experimental class, although for  control class was 0,173 and 0,023. Although the result of homogenytas experimental class was 3,263 and control class was 1,831. Based on the test result SPSS 17 by using test T-test provided the value of T count it  1.498 with the standard of significant 0,151 for class experimental, as for the control T count it  2.172 with the standard of significant 0,041. And so what happen is T count it  < T table. So Ho rejected and Ha accepted. Therefore can be concluded that there is vibration animation and swell have significant effect in learning students physics SMP Negeri 3 Monta Bima academic year 2015/2016.
Co-Authors Dwi Sabda Budi Prasetya M. Fuaddunazmi Neneng Rulyati