The magnetic nano-particle synthesized from natural iron sand had been successfully done. Generally, this natural iron sand is a kind of natural waste in Indonesia that has not been optimally used. This research is expected to explain the utilization of Indonesian local natural iron sand as an advanced magnetic material resource. Therefore the reader of this article can develop it for further application. Magnetic particles are a material that is very promising in supporting developments of science and technology. One of them is the development in medical fields. Most previous researchers carried out the magnetic synthesis of particles using chemicals as precursors. In this study, the researchers would like to report how to synthesize magnetic particles using local natural iron sand. The applied method consisted of three steps, namely chemical ablation, co-precipitation, and hydrothermal method. The results of this research showed that Zn-dopped magnetic particles in Quasi-spherical structures become hollow-microsphere morphological structures even though they had not been perfected yet. The Zn-dopped treatment broadens the frequency wave absorptions and magnetism properties. The Zn-dopped Ion had stronger magnetic properties than that of organic factor effects from C-dot that theoretically can decrease the magnetic properties. This article briefly describes the synthesis mechanism of magnetic material from natural iron sand as material resources to substitute highly expensive mainstream chemical material. However, this study still needs to be deeply investigated to produce the optimum scientific application.
The waters of the Bay of Bengal (BoB) are influenced by the northeast monsoon (November-February) and the southwest monsoon (June-September). This study aims to determine the relationship between sea surface temperature (SST), sea surface salinity (SSS), and chlorophyll-a (Chl-a) during January 2021 in the BoB. The method used in this study is the method of correlation analysis, hypothesis testing, and analysis of variance using monthly average data for January 2021. The data comes from the Copernicus Marine Environment Monitoring Service (CMEMS) portal. Our analysis showed that high Chl-a was inversely related to low SST and SSS conditions and vice versa. This finding confirms the results of other previous studies. Medium and negative correlations occurred for the Chl-a - SST and Chl-a - SSS pairs. Meanwhile, the SST- SSS pair shows a strong and positive correlation. The hypothesis test shows that the conclusions drawn from these correlation relationships are acceptable. Furthermore, from the analysis of variance obtained, it was found that Chl-a had a significant effect on variations in SST and SSS, while SST had a significant effect on variations in SSS.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.