Papers – Page 451 – TechConnect Briefs

Phagocytizing cells recruitment and activity in response to pulmonary deposition of magnetite particles of different size in nanometer and micrometer ranges

Privalova L.I., Katsnelson B.A., Kuzmin S.V., Degtyareva T.D., Sutunkova M.P., Yeremenko O.S., Khodos M.Y., Kositsina A.N., Malakhova N.A., Glazyrina J.A., Medical Research Center for Prophylaxis and Health Protection in Industrial Workers, RU

It is often maintained that nanoparticles are poorly recognized by host’s defence mechanisms and, specifically, cause weak attraction of phagocytes and are therefore removed from lungs ineffectively. However, intratracheal instillation of water-suspended magnetite nanoparticles caused [...]

The Effect of Nanoparticles on Bacteriophage Infection

Nickel A.L., Pedulla M.L., Kasinath R.K., Montana Tech, US

We present the results of our recent findings that the introduction of apatite nanoparticles (~10 nm) in a classical phage-bacteria infection scenario increases the efficacy of the phage infection as investigated through plaque formation. The [...]

Behaviour of Aerosol Nanoparticles Released into Simulated Workplace Environment

Wu Q., Marion S., Seipenbusch M., Kasper G., DNV, NO

In this work we report results from our EU research project NANOTRANSPORT. This project addressed the occupational health risks associated with aerosols released during manufacture of nanoparticles. The main objective of this project was to [...]

Applying Basic Risk Management Principles to Nanomaterial Processes

Geraci C.L., National Institute for Occupational Safety and Health, US

Health, safety, and environmental issues continue to be a high priority area to be addressed during the commercialization of nanomaterials or nanomaterial-enabled products. Facilities engaged in the production or use of engineered nanomaterials, specifically nanoparticles, [...]

Lessons learned from the field, how to protect yourself from occupational exposure to engineered nanomaterials

Hodson L.L., Geraci. M. Methner C.L., Crawford C., CDC/NIOSH, US

NIOSH has visited over 26 nanomaterial facilites, evaluated workplace exposures and created recommended guidance to reduce potential exposures to nanomaterials. A summary of lessons learned about effective control strategies will be shared.

Modeling Aggregation and Size Distribution of Nanoparticles with Monte Carlo Simulation

Liu H., Surawanvijit S., Rallo R., Orkoulas G., Cohen Y., University of California, Los Angeles, US

The size distribution of the nanoparticles and their aggregates is crucial for predictions of the fate and transport of nanoparticles in the environment. A computational model was developed in the present work based on a [...]

A Non-contact Co-Culture Model of Peripheral Neural Cells for Nanotoxicity, Tissue Engineering and Pathophysiological Studies

Jaiswal A., Wong Y.Y.W., Bhushan A., Daniels C., Lai J.C.K., Idaho State University, US

Cell culture models in vitro have long served as tools for the elucidation of pathophysioligcal cellular and molecular mechanisms of diseases. Recently these versatile model systems have permeated into toxicology and tissue engineering research. Although [...]

The Use of Nanoscale Zero Valent Iron for Environmental Remediation – Benefits and Possible Pitfalls

Chan-Remillard S., Borda M., Crawford A., Kloschinsky T., Stenroos P., Marques L., Goudey J.S., HydroQual Ltd and Golder Associates Ltd/Inc., CA

Nanoscale zero valent iron (nZVI) is the primary nanoscale particle that is being used for environmental remediation of contaminated groundwater and soils. Golder Associates Ltd. and HydroQual Laboratories (a wholly owned subsidiary of Golder) has [...]

Functional polymer hydrogels for water purification applications

Liu Y., State University of New York at Stony Brook, US

Filtration is necessary in many engineering field. Polymeric membranes have been used in filtration application for more than a decade. However, some of the contaminants, e.g. radiounuclides and toxic metals, present in soluble form in [...]

Polyethylene-oxide (PEO) linear nano-polymer directly stimulates endothelium and protects myocardium from focal ischemia-reperfusion injury via eNOS pathway in rats

Uryash A., Arias J., Wu H., Adams J.A., Mount Sinai Medical Center, US

Medical grade Nano-polymers (NP) used to enhance circulation, drug and gene delivery. Injection of Polyethylene-oxide (PEO) increase tissue perfusion and decrease mean blood pressure in animal models. Polyethylene-oxide (PEO) NP’s ultra high molecular weight (2-5 [...]