Assunta Marrocchi is currently Associate Professor at the Department of Chemistry, Biology and Biotechnology of the University of Perugia. She earned a PhD in Chemical Sciences at the same Institution. In 2008 she conducted research at Northwestern University, Evanston, IL (USA), as visiting scientist. Her research expertise and interests encompass the fields of 1) organic functional materials, with a special emphasis on the sustainable synthesis of photoactive organics for solar cells; 2) biomass sustainable conversion to high added value chemicals.
Sensitive and label free detection of Prostate Specific Antigen (PSA) is still a challenge in prostate cancer diagnosis. Recently we have developed a label-free PSA aptasensor based on graphene quantum dots-gold nanorods (GQDs-AuNRs) modified screen printed electrodes. GQDs-AuNRs hybrid provides excellent platform for immobilization of PSA specific aptamers and further electrochemical sensing of PSA. For the first time multi-detection of PSA is demonstrated using three techniques simultaneously, viz. cyclic voltammetry (CV), differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS). Under optimum conditions, sensor shows reproducible results with limit of detection (LOD) of 0.14 ngmL-1. Aptasensor is also demonstrated in real samples with satisfactory results.
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Before describing current methodology and theoretical approaches to problem solving research, an exposition of the different definitions found in the literature will be presented, such as:
Posted by Michael McKinney at 09:24 AM | |
Title of Talk: Purification of water using advanced technology: Photomineralization of water-organic contaminants by ZnO nanoparticles under direct solar light
Posted by Michael McKinney at 09:44 AM | |
I just wanted to share my experience with Olaplex. I am a licensed cosmetologist and after seeing rave reviews I wanted to try this product on my platinum blond waste length hair. But what came afterwards was a horrifying experience! My hair broke off in big clumps and now months later I am still experiencing breakage along the same breakage area line. I have done my own hair for years and have never had this horrid experience happen. I have half as much hair as I use to and all I can do now is wear it slicked back with clip in extensions to hide the breakage and thinness. So of course I was devastated and I re-read the directions making sure I did not make a mixing mistake and I did not. So I searched out to find a represenitive to tell about my horror story! I was given a email address for a company represenitive at which time I sent her this email….
I was given your email address to share my experience with olaplex. I have been platinum blond for years. I am a licensed cosmetologist. I used olaplex this last time I did my regrowth and my hair broke off. And not like a little breakage this is massive breakage in my crown and Mohawk area. My hair is maybe a inch now in those areas and I have hair almost to my butt! This is extremely bad for business when your know for blonding. I now must ware my hair back and hair sprayed down. My hair is extremely dry and every time I wash my hair more breaks off! I am really trying not to have a melt down over my hair damage. I just wanted to share my experience and voice my concerns.
I used 1 oz Schwartzkopf bleaching powder with 1/4 oz Olapex and 40 volume developer because instructions say to boost the developer one level higher than my usual 30V and I do not use heat. This is a on the scalp application. I let it process about 40 min. I have never had problems lightening my hair before and having breakage. I’m gonna have to cut my hair to a short pixie cut now! My hair is to my butt! Every time I wash my hair more and more breaks off!!! This is even with me washing in cold water and letting my hair air dry with no heat! Honestly I’m devastated!
Posted by Michael McKinney at 03:03 PM | | ,
Dr. Bhavani Puttaswamygowda is working as Assistant Professor of Biotechnology at College of Agriculture, V.C. Farm, Mandya, University of Agricultural Sciences, Bangalore. She is working on synthesis of slow release nanofertilizers to enhance nitrogen use efficiency. She is also exploring different dimensions of exploiting nanotechnolgy to develop alternative effective strategies in various fields of agriculture.