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Latest Colloidal gold Stories

2008-10-09 03:00:19

By Valenzuela, Stella Cortie, Michael Gold nanoparticles can target and kill the parasite Toxoplasma gondii, opening the way for a new treatment for parasitic infections in humans. Over the ages, people worldwide have revered gold as a precious metal, with its uses being many and varied. In cultures where the Sun was worshiped as a deity, gold was viewed as its representative form on Earth. It has also commonly been used for decorative purposes in art, food and jewellery. Other uses include...

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2008-06-23 10:55:00

Nanoparticles of gold too small to be seen with the naked eye have been created in laboratories, but up until now, have never been seen in nature. The search for these natural but "Ëœinvisible' nanoparticles is important. If they can be proved to exist, the knowledge will help give us a deeper understanding of how gold can be transported and deposited by geological processes, and therefore help explorers to find new gold deposits in Australia. Now, hard evidence that gold...

2007-11-13 06:00:22

By Jain, Kewal K Background: Nanobiotechnologies are being applied to molecular diagnostics and several technologies are in development. Methods: This review describes nanobiotechnologies that are already incorporated in molecular diagnostics or have potential applications in clinical diagnosis. Selected promising technologies from published literature as well as some technologies that are in commercial development but have not been reported are included. Results: Nanotechnologies enable...

2007-09-28 06:00:00

By Xiao, Yabing Ling, Jie; Qian, Shahua; Lin, Anqing; Et al ABSTRACT: A novel method of preconcentration of trace arsenite and arsenate by using titanium dioxide nanoparticles as adsorbent was described. The concentrations of preconcentrated arsenite and arsenate were determined by a silver diethyldithiocarbamate spectrophotometric method without desorption. Batch adsorption experiments were carried out as a function of the pH, contact time, amount of titanium dioxide nanoparticles, and...

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2007-02-26 15:40:00

Common Ingredient in Big Macs and Sodas Can Stabilize Gold Nanoparticles for Medical Use, Researchers Find Gold nanoparticles could be used to detect and treat cancer and other diseases COLUMBIA, Mo. "“ The future of cancer detection and treatment may be in gold nanoparticles "“ tiny pieces of gold so small they cannot be seen by the naked eye. The potential of gold nanoparticles has been hindered by the difficulty of making them in a stable, nontoxic form that can be injected...

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2006-10-11 12:30:00

UPTON, NY - The speed of nanoparticle assembly can be accelerated with the assistance of the molecule that carries life's genetic instructions, DNA, a team of researchers at the U.S. Department of Energy's Brookhaven National Laboratory recently found. Nanoparticles, particles with dimensions on the order of billionths of a meter, could potentially be used for more efficient energy generation and data storage, as well as improved methods for diagnosing and treating disease. Learning how to...

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2005-11-29 14:02:08

Nanomaterials are increasingly gaining the attention of not only the scientific community, but also the public due to their unique properties which endear them to new and exciting applications. These special properties can vary markedly from those of the analogous bulk materials. The physical and chemical properties of the nanomaterials tend to be exceptionally closely dependent on their size and shape or morphology. As a result, materials scientists are focusing their efforts on developing...

2005-10-24 20:57:48

A team of 13 U.K. researchers and one U.S. researcher reported in the Oct. 20 issue of the British journal that the carbon-supported gold catalysts can be fine-tuned with high selectivity for desired products through the addition of trace amounts of bismuth. The gold catalysts can also carry out partial oxidations under solvent-free conditions, the researchers said, making them more environmentally friendly than oxidation processes that use chlorine, and less costly than those employing...

2005-10-07 13:50:37

Researchers from the University of California, San Francisco and Georgia Institute of Technology have found a new way to kill cancer cells. Building on their previous work that used gold nanoparticles to detect cancer, they now are heating the particles and using them as agents to destroy malignant cells. The researchers are a father and son, working together on opposite coasts. Their study findings are reported in the on-line edition of the journal Cancer Letters, found at Sciencedirect.com...

2005-06-03 19:17:14

Binding gold nanoparticles to a specific antibody for cancer cells could make cancer detection much easier, say medical researchers from the University of California, San Francisco and Georgia Institute of Technology. The researchers are a father and son, working together on opposite coasts. Their study findings are reported in a recent edition (May 11) of the journal Nano Letters, published by the American Chemical Society. Principal author is Ivan El-Sayed, MD, assistant professor of...


Word of the Day
cruet
  • A vial or small glass bottle, especially one for holding vinegar, oil, etc.; a caster for liquids.
This word is Middle English in origin, and ultimately comes from the Old French, diminutive of 'crue,' flask.
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