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All Journal Jurnal Penelitian Fisika dan Aplikasinya (JPFA) JPSE (Journal of Physical Science and Engineering) Jurnal Pembelajaran Sains
Heriyanto Heriyanto
Universitas Negeri Malang
Astronomy Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Materials Science & Nanotechnology Mathematics Physics Other

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 1 
INTENSIVE ONLINE TRAINING DURING THE COVID-19 PANDEMIC FOR INDONESIAN SCIENCE TEACHERS TO WRITE GOOD SCIENTIFIC ARTICLES Sentot Kusairi; Nurul Hidayat; Heriyanto Heriyanto; Atsnaita Yasrina
Jurnal Pembelajaran Sains Vol 4, No 2 (2020)
Publisher : Prodi Pendidikan IPA FMIPA Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um033v4i2p42-47

Abstract

Writing works in the form of scientific articles is one of the skills that teachers must have. Not only for promotion needs, but mainly to contribute to academic society on research results in the realm of teaching. Scientific articles written by teachers will enrich an scientific documentations. Moreover when the topics raised in the scientific article are the actual representations of the conditions of teaching and learning in the classroom or school. If many teachers write their scientific works in the form of articles, the above goals will be maximally achieved. However, the counterproductive situation that is still observed today is that very few teachers submit their articles for publication in national journals or proceedings. It is because the lack of knowledge of how to publish their research work and writing skill, then the training for publication in needed for this gap. Therefore, intensive assistance needs to be done so that the gap can be covered. In this present paper, a description of the implementation of scientific article writing training for secondary school science and physics teachers is reported. The training was conducted online with participating teachers spread across various schools in Indonesia. The online training was held for three days and assistance in writing scientific articles for approximately one month, during the COVID-19 pandemic, until the participants succeeded in collecting the final product in the form of scientific articles.
Combination of Coprecipitation and Sonochemical Methods in Synthesizing Spinel Hausmannite Nanomaterial Nurul Hidayat; Ahmad Taufiq; Sunaryono Sunaryono; Samsul Hidayat; Heriyanto Heriyanto; Era Budi Prayekti
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 8 No. 1 (2018)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v8n1.p1-9

Abstract

As it has been widely known that the spectacular characteristics of nanomaterials are strongly dependent on their particle size, crystal structure, and molecular arrangement. The fine structure formation of nanomaterials is inevitable in an attempt of optimizing their promising applications in various fields. One of the notable nanomaterials up to now is hausmannite or Mn3O4. This paper presents a combination of coprecipitation and sonochemical routes in a concurrent way to produce spinel-structured hausmannite nanomaterials. The pH was varied during the synthesis at values of 9, 10, 11, 11.5, and 12. The crystal structure properties were evaluated by X-ray diffractometry (XRD) with the diffraction angle range of 15° - 80°. The functional groups were investigated by Fourier transform infrared (FTIR) spectrometry having wavenumber from 400 to 4000 cm-1. In this study, pH 10 was found to be the best synthesis parameter in producing Mn3O4. Both XRD and FTIR data analyses have agreed on the formation of spinel hausmannite nanomaterials.
Measuring System of Temperature, Humidity, and Light Intensity for Plant Monitoring in BALITJESTRO, Batu City Tomy Andre Ansyah; Heriyanto Heriyanto; Buyung Al Fanshuri
JPSE (Journal of Physical Science and Engineering) Vol 6, No 1 (2021): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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Abstract

Therefore, a tool is needed to make it easier for researchers, so there is no need to go back and forth to retrieve data. This research has the following research method stages, (1) literature study of theories to design the system from the tools to be made, (2) system design, (3) analysis of device requirements, (4) tool calibration process (data can be said to be valid if the error does not exceed one per cent), and (5) data processing is according to agricultural research needs. In this research, a tool that has calibrated with an appropriate measuring instrument produced. Measuring temperature, humidity, and light intensity designed with a microcontroller and other sensors with a data storage base on an SD card. The measuring results show that the temperature values fluctuate between 16.9 °C to 28.2 °C. The value of air humidity tends to remain at the value of 99.9 per cent. At the same time, the value of light intensity ranges from 332 to 606 Cd. The relative error of temperature, humidity, and light intensity is 0.007, 0.082, and 0.016 per cent respectively. Therefore, each measurement indicator has a relative error value of less than one per cent so that the designed tool has valid and under the standardized measuring instrument.DOI: 10.17977/um024v6i12021p033
Co-Authors Ahmad Taufiq Atsnaita Yasrina Buyung Al Fanshuri Era Budi Prayekti Nurul Hidayat Samsul Hidayat Sentot Kusairi Sunaryono Tomy Andre Ansyah