E-portfolio: a practical tool for self-directed, reflective, and collaborative professional learning

This chapter discusses the role of an e-portfolio in professional learning and development. We begin by providing a better understanding of the concept of a portfolio by discussing its meaning, purpose and uses in different contexts as well as the role of technological innovations, which paves the way for new practices in developing portfolios. This is followed by a comprehensive discussion about the use of electronic portfolios in light of recent research in order to provide an overview of the advantages and disadvantages of using e-portfolios. Current research suggests that e-portfolios are practical tools for supporting self-directed and reflective learning. In addition, e-portfolios have the potential to support collaborative learning among learners who are interested in sharing their works and in gaining feedback. At the end of the chapter, we discuss an approach to designing professional learning and development plans, which serves as a guide fo

A Purely Green Synthesis of Silver Nanoparticles using Carica papaya, Manihot esculenta and Morinda citrifolia: Synthesis and Antibacterial Evaluations.

Green procedure for synthesizing silver nanoparticles (AgNPs) is currently considered due to its economy and toxic-free effects. Several existing works on synthesizing AgNPs using leaves extract still involve the use of physical or mechanical treatment such as heating or stirring, which consume a lot of energy. To extend and explore the green extraction philosophy, we report here the synthesis and antibacterial evaluations of a purely green procedure to synthesize AgNPs using Carica papaya, Manihot esculenta, and Morinda citrifolia leaves extract without the aforementioned additional treatment. The produced AgNPs were characterized using the ultraviolet–visible spectroscopy, field emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, and antibacterial investigations. For antibacterial tests, two bacteria namely Escherichia coli and Bacillus cereus were selected. The presently employed method has successfully produced spherical AgNPs having sizes ranging from 9 to 69 nm, with plasmonic characteristics ranging from 356 to 485 nm, and energy-dispersive X-ray peak at approximately 3 keV. In addition, the smallest particles can be produced when Manihot esculenta leaves extract was applied. Moreover, this study also confirmed that both the leaves and synthesized AgNPs exhibit the antibacterial capability, depending on their concentration and the bacteria type