Thesis nanoparticle

Il reste encore 1 mois et 1 semaine pour investir.

Thesis nanoparticle

Abstract Purpose Characterisation of chitosan-tripolyphosphate nanoparticles is presented with the aim of correlating particle shape and morphology, size distribution, surface chemistry, and production automatisation with preparation procedure, chitosan molecular weight and loaded protein.

Methods Nanoparticles were prepared by adding drop wise a tripolyphosphate-pentasodium solution to chitosan solutions under stirring. Trehalose, mannitol and polyethylene-glycol as bioprotectants were used to prevent particle aggregation and to reduce mechanical stress during freezing and drying processes.

Results As a novel result, time evolution of the particle size distribution curve showed the presence of a bimodal population composed of a fraction of small particles and of a second fraction of larger particles attributed to the rearrangement of particles after the addition of tripolyphosphate.

Storage for 4 weeks resulted in a slight increase in average size, due to the continuous rearrangement of small particles. Improvement of nanoparticle stability after lyophilisation and spray-drying was observed in the presence of all bioprotectants.

Trehalose was the best protectant for both methods.

Supplementary files

Finally, in vivo tests using chick embryos assessed the biocompatibility of chitosan, tripolyphosphate and the nanoparticles. Conclusion The simple ionotropic gelation method with low-MW chitosan was effective in achieving reproducible nanoparticles with the desired physico-chemical and safety characteristics.[mtb15.com] - CaltechTHESIS.

A nanoparticle is defined as having one dimension nm or less in size. Environmentally toxic or biologically hazardous reducing agents are typically involved in the chemical synthesis of nanoparticles so there has been a search for greener production alternatives. Current research has shown that microorganisms, plant extracts, and fungi can produce nanoparticles through biological pathways.

Student Profiles - IITB-Monash Research Academy

Kruk, Katie [email protected] Alma mater: Grand Valley State University 1 st year in the MSTP Research interests: I have an interest in studying neural networks (including how their anatomy influences their function, how individual neurons contribute to a whole network, and how particular neural networks act as a whole).

The Economist offers authoritative insight and opinion on international news, politics, business, finance, science, technology and the connections between them.

A nanoparticle is defined as having one dimension nm or less in size.

Thesis nanoparticle

Environmentally toxic or biologically hazardous reducing agents are typically involved in the chemical synthesis of nanoparticles so there has been a search for greener production alternatives.

Current research has shown that microorganisms, plant extracts, and fungi can produce nanoparticles through biological pathways.

Prof. dr. A.G.J.M. van Leeuwen MSc PhD

Resume of Dr. Santimukul Santra Page 1 Santimukul Santra, Ph.D. Associate Professor Department of Chemistry, Pittsburg State University.

S. Broadway Street, Pittsburg, KS

Damjana Drobne - Bionanoteam – Nanobiology and Nanotoxicology Research