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        Paramagnetic Zn<sub>(1-x)</sub>Mn<sub>x</sub>O (0.00≤x≤0.06) Nanoparticles Prepared by The Coprecipitation Method

        Harsono, Heru,Wardana, I Nyoman Gede,Sonief, Achmad As'ad,Darminto, Darminto The Korean Institute of Electrical and Electronic 2017 Transactions on Electrical and Electronic Material Vol.18 No.1

        The Zn1-xMnxO ($0.00{\leq}x{\leq}0.06$) samples have been synthesized in the form of powder by the coprecipitation method at low temperature using $Zn(CH_3COO)_2$. $2H_2O$ and $Mn(CH_3COO)_2$. $4H_2O$ powders, as well as HCl and $NH_4OH$ solutions as starting materials. Characterization was conducted using XRD, TEM, XRF, FTIR and VSM. The result shows that the $Zn_{(1-x)}Mn_xO$ ($0.00{\leq}x{\leq}0.06$) nanoparticles have the wurtzite phase with a hexagonal structure and particle sizes ranging from 17.48 to 118.83 nm. In a qualitative analysis of XRF, the peaks that confirm the existence of the manganese element in Mn-doped ZnO samples were observed. Meanwhile, FTIR test result shows that there are peaks at around $500cm^{-1}$ and $400cm^{-1}$ in the FTIR spectra for Mn doped ZnO samples which clearly reveal the existence of the (Zn, Mn)-O strain mode. The (Zn, Mn)-O absorption peak positions have shifted to a lower wave number with increasing Mn doping content. The peak intensity is also lower if compared to that of the ZnO sample without doping. From the VSM test, it is shown that $Zn_{(1-x)}Mn_xO$ ($0.00{\leq}x{\leq}0.06$) nanoparticles are all paramagnetic having monotonically increased susceptibility as increasing Mn content.

      • KCI등재후보

        Drawing method can improve musculoskeletal anatomy comprehension in medical faculty student

        Muliani Joewono,I Nyoman Mangku Karmaya,Gede Wirata,Yuliana,I Gusti Ayu Widianti,I Nyoman Gede Wardana 대한해부학회 2018 Anatomy & Cell Biology Vol.51 No.1

        The Chinese philosophy of Confucianism said “What I heard I forgot, what I see, I remember, what I do, I understand.” During this time, most of the teaching and learning process relies on viewing and listening modalities only. As a result, much information does not last long in memory as well as the material understanding achieves became less deep. In studying anatomy science, drawing is one of effective important methods because it is an integration of ideas and knowledge of vision thereby increasing comprehension and learning motivation of college students. The purpose of this research is to know the musculoskeletal anatomy comprehension by drawing learning method in Medical Faculty student. This research uses observational analytic design with the cross-sectional design. Total sampling was done to the entire student of Physiotherapy Study Program in 2012, 2013, and 2014, Medical Faculty of Udayana University. The average value of musculoskeletal anatomy of the student in 2012, 2013, and 2014 sequentially are 31.67, 33.57, and 45.00, respectively. Normality test with Shapiro-Wilk and homogeneity with Levene’s test showed normal results and homogeneous. One-way ANOVA test between groups showed a significant result that is 11.00 (P<0.05). It is concluded that the drawing method can improve the musculoskeletal anatomy comprehension in Medical Faculty student.

      • KCI등재

        Paramagnetic Zn(1-x)MnxO (0.00≤x≤0.06) Nanoparticles Prepared by The Coprecipitation Method

        Heru Harsono,I Nyoman Gede Wardana,Achmad As'ad Sonief,Darminto 한국전기전자재료학회 2017 Transactions on Electrical and Electronic Material Vol.18 No.1

        The Zn1-xMnxO (0.00≤x≤0.06) samples have been synthesized in the form of powder by the coprecipitation methodat low temperature using Zn(CH3COO)2. 2H2O and Mn(CH3COO)2. 4H2O powders, as well as HCl and NH4OH solutionsas starting materials. Characterization was conducted using XRD, TEM, XRF, FTIR and VSM. The result shows that theZn(1-x)MnxO (0.00≤x≤0.06) nanoparticles have the wurtzite phase with a hexagonal structure and particle sizes rangingfrom 17.48 to 118.83 nm. In a qualitative analysis of XRF, the peaks that confirm the existence of the manganeseelement in Mn-doped ZnO samples were observed. Meanwhile, FTIR test result shows that there are peaks at around500 cm-1 and 400 cm-1 in the FTIR spectra for Mn doped ZnO samples which clearly reveal the existence of the (Zn,Mn)-O strain mode. The (Zn, Mn)-O absorption peak positions have shifted to a lower wave number with increasingMn doping content. The peak intensity is also lower if compared to that of the ZnO sample without doping. Fromthe VSM test, it is shown that Zn(1-x)MnxO (0.00≤x≤0.06) nanoparticles are all paramagnetic having monotonicallyincreased susceptibility as increasing Mn content.

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