POD: Practicing With Violet \/\/FREE\\\\
Turn pots regularly to keep flowers from reaching for the light. Place growing African violets 3 feet (1 m.) from a south- or west-facing window for the right lighting. If this light cannot be maintained for eight hours, consider supplementing with fluorescent lights.
POD: Practicing with Violet
Bacteria have a cell wall made up of peptidoglycan. This cell wall provides rigidity to the cell, and protection from osmotic lysis in dilute solutions. Gram-positive bacteria have a thick mesh-like cell wall, gram-negative bacteria have a thin cell wall and an outer phospholipid bilayer membrane. The crystal violet stain is small enough to penetrate through the matrix of the cell wall of both types of cells, but the iodine-dye complex exits only with difficulty (Davies et al. 1983)
Long beans are ready to harvest 40 to 70 days after seeding, depending on location. This crop should be harvested at an immature stage when seeds are not fully matured. It is manually harvested daily when the pods are 10 to 12 inches long. Alternatively, it can be harvested as dried beans after seeds are fully developed and matured. Young leaves can be used to feed livestock, and the plant's large, attractive violet flowers with draping pods can serve as an ornamental plant in urban parks and gardens (Lawrence 2012).
The International Ultraviolet Association (IUVA) believes that UV disinfection technologies can play a role in a multiple barrier approach to reducing the transmission of the virus causing COVID-19, SARS-CoV-2, based on current disinfection data and empirical evidence. UV is a known disinfectant for air, water and surfaces that can help to mitigate the risk of acquiring an infection in contact with the COVID-19 virus when applied correctly. "The IUVA has assembled leading experts from around the world to develop guidance on the effective use of UV technology, as a disinfection measure, to help reduce the transmission of COVID-19 virus. Established in 1999, the IUVA is a nonprofit dedicated to the advancement of ultraviolet technologies to help address public health and environmental concerns," says Dr. Ron Hofmann, Professor at the University of Toronto, and President of the IUVA.
Sorption of dyes from aqueous solution is an efficient process of remediating dye-contaminated water. It has been described as one of the most effective and economically feasible methods for the removal of dyes from aqueous solutions (El Haddad et al. 2013). Adsorption using activated carbon as sorbent has been cited by the US Environmental Protection Agency (USEPA) as one of the best environmental control technologies (Asenjo et al. 2011). However, the high cost of commercial activated carbon sometimes makes its use limited. This economic disadvantage has directed research into the use of agro-wastes as alternative low-cost and renewable precursors for the production of activated carbon. In the last few years, the utilization of activated carbon derived from agro-wastes has attracted the attention of the research community due to their availability and very low-cost. There have been several reports on the use of agro-waste derived activated carbon to successfully remove dyes from aqueous media, such as, activated carbons derived from groundnut shells (Malik et al,2007), cocoa shell (Ahmad et al. 2012), and plantain peel (Inam et al,2017). In the present study, activated carbon derived from Millettia thonningii seed pods an agricultural residue, with little commercial value, is used as a sorbent in the remediation of crystal violet and methylene blue-contaminated water. 350c69d7ab