Medical research

Novel nanoparticle enhances radiation tumor killing

Radiation kills tumors by creating oxygen free radicals that damage the tumor DNA. However, the lack of oxygen in the center of tumors blocks the production of free radicals, inhibiting radiation killing. NIBIB researchers ...

Medical research

Inhaled nanoparticles could treat lung cancer

QUT pharmaceutical scientist Dr. Nazrul Islam, from School of Clinical Sciences, said lung cancer was one of the most common cancers globally and one of the deadliest, being a leading cause of cancer deaths.

Diseases, Conditions, Syndromes

Imaging data reveals nanomedicines in lungs

The PneumoNP project aims at developing new inhaled nanotherapeutic formulations to combat lung infection. The novel drug is comprised of an antibiotic carried by a nanoparticle. For this project, Spanish researchers from ...

Immunology

Computer-designed vaccine elicits potent antibodies against RSV

A first-of-its-kind nanoparticle vaccine candidate for respiratory syncytial virus has been designed in an international research effort. RSV is second only to malaria as a cause of infant mortality worldwide. The new vaccine ...

Health

Arc welding fumes detrimental to human health

Working as part of an international group of toxicologists, scientists of the Far Eastern Federal University (FEFU) have found that harmful nanoparticles are formed in the process of arc welding using the most common types ...

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Nanoparticle

In nanotechnology, a particle is defined as a small object that behaves as a whole unit in terms of its transport and properties. It is further classified according to size: In terms of diameter, fine particles cover a range between 100 and 2500 nanometers, while ultrafine particles, on the other hand, are sized between 1 and 100 nanometers. Similarly to ultrafine particles, nanoparticles are sized between 1 and 100 nanometers, though the size limitation can be restricted to two dimensions. Nanoparticles may or may not exhibit size-related properties that differ significantly from those observed in fine particles or bulk materials .

Nanoclusters have at least one dimension between 1 and 10 nanometers and a narrow size distribution. Nanopowders are agglomerates of ultrafine particles, nanoparticles, or nanoclusters. Nanometer sized single crystals, or single-domain ultrafine particles, are often referred to as nanocrystals. Nanoparticle research is currently an area of intense scientific research, due to a wide variety of potential applications in biomedical, optical, and electronic fields. The National Nanotechnology Initiative has led to generous public funding for nanoparticle research in the United States.

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