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New insights into health and environmental effects of carbon nanoparticles
August 06, 2009A new study raises the possibility that flies and other insects that encounter nanomaterial "hot spots," or spills, near manufacturing facilities in the future could pick up and transport nanoparticles on their bodies, transferring the particles to other flies or habitats in the environment. The study on carbon nanoparticles - barely 1/5,000th the width of a human hair -is scheduled for the Aug. 15 issue of ACS' Environmental Science & Technology, a semi-monthly journal.
David Rand and Robert Hurt and colleagues note that emergence of a nanotechnology industry is raising concerns about the potential adverse health and environmental effects of nanoparticles. These materials show promise for use in a wide range of products, including cosmetics, pharmaceuticals, and electronics.
The study focused on determining how different kinds of exposure to nanoparticles affected larval and adult fruit flies. Scientists use fruit flies as stand-ins for humans and other animals in certain kinds of research. There were no apparent ill effects on fruit fly larvae that ate food containing high concentrations of nanoparticles. However, adult flies died or were incapacitated when their bodies were exposed to large amounts of certain nanoparticles. During the experiments, the researchers noted that contaminated flies transferred nanoparticles to other flies, and realized that such transfer could also occur between flies and humans in the future. The transfer involved very low levels of nanoparticles, which did not have adverse effects on the fruit flies. Since larvae can tolerate very high doses of nanoparticles in the diet, but adult flies show very different sensitivities, the environmental impact depends on the ecological context of nanoparticle release.
American Chemical Society
American Chemical Society
Nanoparticles Current Events and Nanoparticles News RSSRice physicists kill cancer with 'nanobubbles'
Using lasers and nanoparticles, scientists at Rice University have discovered a new technique for singling out individual diseased cells and destroying them with tiny explosions.
Smart Coating Opens Door To Safer Hip, Knee and Dental Implants
Researchers at North Carolina State University have developed a "smart coating" that helps surgical implants bond more closely with bone and ward off infection.
Nano imagining takes turn for the better
Stephan Link wants to understand how nanomaterials align, and his lab's latest work is a step in the right direction.
Engineers explore environmental concerns of nanotechnology
As researchers around the world hasten to employ nanotechnology to improve production methods for applications that range from manufacturing materials to creating new pharmaceutical drugs, a separate but equally compelling challenge exists.
Detecting cancer early
The earlier the doctor finds the tumor, the better the patient's chances of recovery. A new testing method aims to detect the disease in its initial stages.
SNM's nanomedicine summit advances molecular imaging
SNM's Nanomedicine and Molecular Imaging Summit wrapped up today in Albuquerque, N.M., with in-depth discussion-and a high sense of energy looking ahead.
New visible light photocatalyst kills bacteria, even after light turned off
In the battle against bacteria, researchers at the University of Illinois have developed a powerful new weapon - an enhanced photocatalytic disinfection process that uses visible light to destroy harmful bacteria and viruses, even in the dark.
New nanoparticles target cardiovascular disease
Researchers at MIT and Harvard Medical School have built targeted nanoparticles that can cling to artery walls and slowly release medicine, an advance that potentially provides an alternative to drug-releasing stents in some patients with cardiovascular disease.
Stevens earns publication spot in top-rated Journal of Advanced Materials
A research paper that has potential implications for homeland defense, work place safety, and health care has been published in the Journal of Advanced Materials (volume, issue, 2010) and reported by materialsviews.com.
Game-changing nanodiamond discovery for MRI
A Northwestern University study shows that coupling a magnetic resonance imaging (MRI) contrast agent to a nanodiamond results in dramatically enhanced signal intensity and thus vivid image contrast.
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Nanoparticles: From Theory to Application by Günter Schmid (Editor) An introduction to the science of nanoparticles, from fundamental principles to their use in novel applications. As a basis for understanding nanoparticle behavior, the book first outlines the principles of quantum size behavior, nanoparticles architecture, formation of semiconductor and metal nanoparticles. It then goes on to describe the chemical syntheses of nanoparticles with defined characteristics, their structural, electrical and magnetic properties, as well as current methods to monitor these properties. Among others, the following nanoparticle-based applications are discussed: * Single-electron devices * Ultra dense recording media * Bioelectronic devices and sensors * Labeling of proteins, nucleic acids and other biomaterials. ... |
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Nanoparticle Technology Handbook by Masuo Hosokawa (Editor), Kiyoshi Nogi (Editor), Makio Naito (Editor), Toyokazu Yokoyama (Editor) Nanoparticle technology, which handles the preparation, processing, application and characterisation of nanoparticles, is a new and revolutionary technology. It becomes the core of nanotechnology as an extension of the conventional Fine Particle / Powder Technology. Nanoparticle technology plays an important role in the implementation of nanotechnology in many engineering and industrial fields including electronic devices, advanced ceramics, new batteries, engineered catalysts, functional paint and ink, Drug Delivery System, biotechnology, etc.; and makes use of the unique properties of the nanoparticles which are completely different from those of the bulk materials. This new handbook is the first to explain complete aspects of nanoparticles with many application examples showing... |
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International Journal of Nanoparticles by Inderscience Enterprises Ltd | |
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Nanoparticles: Building Blocks for Nanotechnology (Nanostructure Science and Technology) by Vincent Rotello (Author) The diverse structures and properties of nanoparticles make them useful tools for both fundamental studies and pragmatic applications in a range of disciplines. This volume is intended to explore this diversity. The first section covers on formation of nanoparticles, and assembly of these systems into structured systems. The second section focuses on both the fundamental physical properties of nanoparticles and pragmatic applications of these systems in the areas of device and materials fabrication. The book will approach the subject from a chemical standpoint, in contrast to most books which are oriented towards materials science or physics. It will also appeal to materials scientists and physicists who are becoming aware of the contributions that chemists can make here. |
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Moisturizing Face Screen SPF 30, Light Tint by Marie Veronique Organics zinc oxide sunscreen no harmful chemicals no nanoparticles |
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Nanoparticles Synthesis, Stabillization, Passivation and Functionalization (Acs Symposium Series) by Ramanathan Nagarajan (Editor), T. Alan Hatton (Editor) Recent advances in the synthesis, stabilization, passivation and functionalization of a wide range of metal, metal oxide, semiconductor and other inorganic, polymer, organic, carbon and biological nanoparticles are reported in this book. Diverse shapes of nanoparticles are discussed here including spheres, cubes, nanorods, nanowires, nanotubes, nanocapsules, and nanopyramids. In the section on metals, one can find description of colloidal and wet chemical approaches to synthesize nanoparticles, methods to control number of functional groups and to attain aqueous dispersibility, impact of stabilizers on SERS activity, and ways to tune plasmon resonance via nanoparticle shapes. A time dependent density functional theory to evaluate adsorption properties of passivating ligands is also... |
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60 Minutes - The Kanzius Machine (April 13, 2008) Airdate: 04/13/08 John Kanzius has no medical degree. In fact, he doesn't even have a college degree. But Kanzius does have terminal cancer, and that has motivated him to invent a radio-wave machine with the idea of treating cancer without the debilitating side effects of chemotherapy and radiation. Lesley Stahl tells this remarkable story of a leukemia patient so moved by the suffering of children with cancer that he has devoted himself to finding a cure. This product is manufactured on demand using DVD-R recordable media. Amazon.com's standard return policy will apply. |
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Nanoparticles and Catalysis by Didier Astruc (Editor) Written by international experts, this monograph combines two of the most important aspects of modern chemistry, presenting the latest knowledge on these environmental friendly applications. This result is a comprehensive overview of the application of nanoparticles in catalysis, focusing on synthesis and the most important reaction types, providing all the information needed by catalytic, organic and solid state chemists, as well as those working with or on organometallics, materials scientists, and chemists in industry. |
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Nanoparticles in Biomedical Imaging: Emerging Technologies and Applications (Fundamental Biomedical Technologies) by J.W. Bulte (Author), J.W. Bulte (Editor), Mike Modo (Editor) Fundamental Biomedical Technologies features titles in multidisciplinary, technology-driven areas, providing the foundations for breakthrough advances in medicine and biology. The term technology refers, in a vigorously unrestrictive sense, to a broad array of engineering disciplines, the sciences of computation and informatics, mathematical models exploiting and advancing methods of mathematical physics, and the development of novel, experimental discovery devices. Titles in this series are designed and selected to provide high-level visionary input for specialists, while presenting overviews of emerging fields for those in related areas. Volumes in this series aim to provide technologists with the material to gain competent entry into biomedical research and biomedical researchers to... |
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Metal Nanoparticles: Synthesis Characterization & Applications by Daniel L. Feldheim (Author) Offers the latest research on the synthesis, characterization, and applications of nanoparticle structural, optical, and electronic properties. |
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