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Quantum computing - 15=3x5 about half of the time

Computing prime factors may sound like an elementary math problem, but try it with a large number, say one that contains more than 600 digits, and the task becomes enormously challenging and impossibly time-consuming. Now, a group of researchers at UC Santa Barbara has designed and fabricated a quantum processor capable of factoring a composite number - in this case the number 15 - into its constituent prime factors, 3 and 5.

Posted: Aug 19th, 2012

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Photonic-plasmonic microcavity for ultrasensitive protein detection

Measuring proteins in real-time down to fM solution concentration levels, corresponding to only a few thousand of protein molecules, has been demonstrated for the first time using a hybrid photonic-plasmonic Whispering Gallery Mode biosensor. Its unprecedented sensitivity is due to optical trapping of proteins at highly sensitive plasmonic hotspots.

Posted: Aug 19th, 2012

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Nanoparticle enhances anticancer immune therapy with a one-two punch

Researchers have developed a novel system to simultaneously deliver a sustained dose of both an immune-system booster and a chemical to counter the cancer's secretions, resulting in a powerful therapy that, in mice, delayed tumor growth, sent tumors into remission, and dramatically increased survival rates.

Posted: Aug 17th, 2012

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Polymer nanoparticle overcomes anticancer drug resistance

In a nanotechnology two-for-one, researchers at the Johns Hopkins University Center of Cancer Nanotechnology Excellence have created a polymer nanoparticle that overcomes tumor resistance to the common anticancer agent doxorubicin and that protects the heart against drug-triggered damage, a therapy-ending side effect that limits doxorubicin's effectiveness. This novel nanoparticle incorporates both doxorubicin and curcumin, a major component of the bright yellow spice turmeric.

Posted: Aug 17th, 2012

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Gold nanorods hitch ride on immune cells that target breast tumors

One of the challenges in treating cancer, whether using nanotechnology or not, is that tumors can often be inaccessible to the therapies designed to kill them. Mostafa El-Sayed, of the Georgia Institute of Technology, and his colleagues are attempting to overcome this obstacle by designing drug-loaded gold nanorods that attract the attention of tumor-associated immune cells known as macrophages.

Posted: Aug 17th, 2012

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Lessons learned in creating biomedical nanoparticles for human use

Over the past six years, the National Cancer Institute's Nanotechnology Characterization Laboratory has characterized more than 250 different nanomaterials developed by over 75 research groups. This extensive experience has given NCL staff a unique perspective on how to design safe and biocompatible nanomaterials for human use.

Posted: Aug 17th, 2012

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