1. Amin R, Sohrabi MR, Zali AR, Hannani K. Five consecutive epidemiological waves of COVID-19: a population-based cross-sectional study on characteristics, policies, and health outcome. BMC Infect Dis. 2022;22(1):906. doi:10.1186/s12879-022-07909-y CrossRef Google Scholar

Nanocrystals of ZnO were prepared by microwave irradiation using Zn (II) acetate and triethanol amin (TEA) as the starting materials and water as solvent. The nanocrystals of ZnO with hexagonal (Wurtzite) structure were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), UV-Vis absorption and FTIR Spectroscopy techniques.

SMP Al-amin is a private school located in the district of Kandanghaur - Indramayu. The learning resources provided by Government only provide books for teachers and do not worksheet to students. Therefore researcher wants make PowerPoint-assisted worksheets increase enthusiasm, student interest learning, motivation while studying. purpose this research produce assisted Microsoft PowerPoint. me...

Abstract: point of view. In this study, a shaking-table was used for concentrating a manganese ore sample from the Ghasem Abadarea in Kerman, Iran. Experiments were designed by using LThe influence of each variable and their interactions on the operation of the device was studied. The variables underinvestigation were: table slope, table frequency, water flowrate, feed rate, and particle size. ...