Solutions

http://www.sci-news.com/othersciences/materials/high-performing-water-desalination-membranes-09209.html

Biological membranes can achieve remarkably high permeabilities while maintaining ideal selectivities by relying on homogeneous internal structures in the form of membrane proteins. In new research, a team of scientists led by Penn State University and the University of Texas at Austin applied such design strategies to desalination polyamide membranes.

Dr. Enrique Gomez, Dr. Manish Kumar and their colleagues from Iowa State University, Penn State University, the University of Texas at Austin, DuPont Water Solutions, and Dow Chemical Co. found that creating a uniform membrane density down to the nanoscale of billionths of a meter is crucial for maximizing the performance of reverse-osmosis, water-filtration membranes.

 .... Public health officials stress that the COVID-19 vaccines will provide the best hope for returning to “normal.” Yet, a recent study from Kaiser Family Foundation revealed one-quarter of the population “probably or definitely would not take the coronavirus vaccine.”   

Much is at stake. For life to return to anything approaching normal, 75% of the population must be immunized. If enough people avoid the vaccine, COVID-19 transmission will continue. Honest, fact-based conversations about the vaccine among family and close friends have an urgency that strikes close to the heart. Since some conversations are likely to be emotionally charged, it’s important to be able to communicate and listen actively. You’ll need to understand your own feelings about the issues, and also deal with someone else’s strong feelings — all while being able to think clearly and stay focused — basic psychoanalytic technique!