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All Journal Komunikasi Fisika Indonesia Tunjuk Ajar: Jurnal Penelitian Ilmu Pendidikan
Sumarti Sumarti
Universitas Riau
Earth & Planetary Sciences Electrical & Electronics Engineering Energy Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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PENGARUH PENAMBAHAN LOGAM TRANSISI NIKEL TERHADAP SIFAT FISIS NANOROD ZnO Sumarti Sumarti; Iwantono Iwantono; Awitdrus Awitdrus
Komunikasi Fisika Indonesia Vol 17, No 3 (2020)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.17.3.155-159

Abstract

Nickel-doped ZnO nanostructures have been successfully grown using seed mediated hydrothermal method. The growth of ZnO nanostructures has been done by concentration of the Ni-doped solution, is 8 mM with the growth temperature of  90°C in 7 hours. The grown ZnO nanostructures were characterized by using UV-Vis Spectroscopy, FESEM, and XRD. The UV-Vis spectra of the samples showed that the ZnO nanorod is hexagonal in shape with a strong absorption occured in the wavelength range of 300-380 nm. The FESEM images showed that geometrical shape of Ni-doped ZnO nanostructures are nanorod with a hexagonal and nanoflower faced shapes. XRD patterns observed show five diffraction peaks at 2θ: 32,09°; 34,76°; 36,65°; 47,95° and 56,97° for Ni doped ZnO nanostructures with crystal orientation of (100), (002), (101), (102) and (110) respectively. The strongest line was found in the crystal plane of (101).
PENGARUH KEPEMIMPINAN KEPALA SEKOLAH DAN MOTIVASI KERJA GURU TERHADAP DISIPLIN KERJA GURU SD NEGERI SEKECAMATAN BANDAR SEI. KIJANG KABUPATEN PELALAWAN Sumarti Sumarti; Gimin Gimin; Erni Erni
Tunjuk Ajar: Jurnal Penelitian Ilmu Pendidikan Vol 5, No 2 (2022)
Publisher : Jurusan Ilmu Pendidikan, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jta.v5i2.291-319

Abstract

This study aims to (1) find out that the principal's leadership affects the teacher's work discipline, (2) work motivation affects the teacher's work discipline, (3) the principal's leadership and work motivation have a joint effect on teacher work discipline. The respondents to the study were teachers of State Elementary Schools in Bandar Sei Kijang District, Pelalawan Regency, totaling 176 people with a sample of 122. Data collection is carried out through the dissemination of questionnaires. The data analysis used is descriptive analysis, inferential statistical analysis. The reliability coefficient of the instrument is calculated using the cronbach alpha formula. The results showed that there was a positive and significant influence of the principal's leadership on teacher work discipline by 0.533, and there was a positive and significant influence of work motivation on teacher work discipline of 0.666. Meanwhile, together there is an influence of the principal's leadership and work motivation on teacher work discipline of 0.702.
Co-Authors Awitdrus Awitdrus, Awitdrus Erni Erni Gimin Gimin Iwantono Iwantono