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 Post subject: Implanted Electrodes Loaded With Drugs Could Monitor Brain A
PostPosted: Fri Jun 10, 2011 7:03 pm 
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Implanted Electrodes Loaded With Drugs Could Monitor Brain And Treat It When Necessary

Electrode Implants Electrodes are already implanted in patients brains to help monitor and mitigate the effects of several neurological conditions (in this case, Parkinsons). By giving them the ability to administer drugs, microelectrodes could also become first responders when the brains chemistry or electrical signaling gets out of sync. Thomasbg via Wikimedia

Microelectrode arrays implanted in the brain monitor neurological conditions in living patients all the time, sometimes even influencing brain activity if it gets out of line. So, thought researchers at the University of Pittsburgh, why not load one up with drugs so it can deliver chemical therapy to problem sites immediately upon detecting an issue?


The team is developing a new polymer-coated electrode that can both monitor and treat a patient immediately, a capability that could be life-changing--or even life-saving--for those living with conditions like epilepsy. Their device is basically a microelectrode like any other, but it has been covered in a conductive polypyrrole film. Chambers in the film are loaded up with different drugs and neurotransmitters like dopamine or GABA.


Under certain electrical conditions, the polymer warps in certain ways, and when it does so its pharmaceutical payloads are released. By matching up certain tell-tale electrical signals associated with things like seizures to drugs that inhibit that activity, a microelectrode array can detect something like a seizure at its onset and begin delivering treatment straight to the brain immediately.


Once the polymer coating delivers its drugs, however, it is pretty much impossible to resupply it without basically replacing it--a procedure patients really dont want to undergo too terribly often. The team is now looking at ways add drug reservoirs, possibly in the form of carbon nanotubes.


[New Scientist]




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 Post subject: Re: Nano-tecnology
PostPosted: Fri Jul 15, 2011 11:11 am 
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Nanotechnology is the engineering of functional systems at the molecular scale. This covers both current work and concepts that are more advanced.nanotechnology refers to the projected ability to construct items from the bottom up, using techniques and tools being developed today to make complete, high performance products.

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Last edited by sjanny01 on Fri Jul 15, 2011 11:22 am, edited 1 time in total.

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 Post subject: Re: Nano-tecnology
PostPosted: Fri Jul 15, 2011 11:12 am 
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Quote:
[b:6b5fv7fu]Nanotechnology is the engineering of [/b:6b5fv7fu][b:6b5fv7fu] functional systems at the molecular scale[/b:6b5fv7fu]. This covers both current work and concepts that are more advanced.nanotechnology refers to the projected ability to construct items [i:6b5fv7fu]from the bottom up[/i:6b5fv7fu], using techniques and tools being developed today to make complete, high performance products.

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If the engineering of functional systems at the molecular scale is, then I´ll be very surprised
What does "this" refer to
Who or what is the bottom up using techniques and tools being developed today to make complete high performance products


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 Post subject: Re: Nano-tecnology
PostPosted: Fri Jul 15, 2011 11:12 am 
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Quote:
[b:6b5fv7fu]Nanotechnology is the engineering of [/b:6b5fv7fu][b:6b5fv7fu] functional systems at the molecular scale[/b:6b5fv7fu]. This covers both current work and concepts that are more advanced.nanotechnology refers to the projected ability to construct items [i:6b5fv7fu]from the bottom up[/i:6b5fv7fu], using techniques and tools being developed today to make complete, high performance products.

Thanks

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I've been waiting for you.


When do you think artificial intelligence will replace lawyers?What does "this" refer to?
Not many people express themselves that way.


Do you like Star Wars?Don't mention it.

My brain contains more than 22,000 patterns, but not one that matches your last input.


What kind of food do you like?


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 Post subject: Re: Nano-tecnology
PostPosted: Fri Jul 15, 2011 11:12 am 
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Quote:
[b:6b5fv7fu]Nanotechnology is the engineering of [/b:6b5fv7fu][b:6b5fv7fu] functional systems at the molecular scale[/b:6b5fv7fu]. This covers both current work and concepts that are more advanced.nanotechnology refers to the projected ability to construct items [i:6b5fv7fu]from the bottom up[/i:6b5fv7fu], using techniques and tools being developed today to make complete, high performance products.

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What else is the engineering of b 6b5fv7fu b 6b5fv7fu functional systems at the molecular scale b 6b5fv7fu? What does "this" refer to? Don't mention it. Are you free? The ALICE chat robot can follow many things, like our discussion about size 6b5fv7fu font 6b5fv7fu font 3d4deitn table tr td url http 58. Try being more or less specific.


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 Post subject: Re: Nano-tecnology
PostPosted: Fri Jul 15, 2011 11:12 am 
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Quote:
[b:6b5fv7fu]Nanotechnology is the engineering of [/b:6b5fv7fu][b:6b5fv7fu] functional systems at the molecular scale[/b:6b5fv7fu]. This covers both current work and concepts that are more advanced.nanotechnology refers to the projected ability to construct items [i:6b5fv7fu]from the bottom up[/i:6b5fv7fu], using techniques and tools being developed today to make complete, high performance products.

Thanks

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i dont know


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 Post subject: Dogs Can Reliably Sniff Out Lung Cancer, German Study Shows
PostPosted: Mon Aug 22, 2011 3:50 pm 
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Making A Diagnosis This sniffer dog is going through training. European Lung Foundation

A dog can accurately detect the early presence of lung cancer by sniffing patients breath, doctors in Germany say. While researchers have known for some time that dogs can sniff out the telltale signs of other forms of cancer, this is the first study that proves dogs can reliably smell this exacting kind.


This is a breakthrough for lung cancer researchers who have been trying to figure out if there are explicit volatile organic compounds associated with the presence of the disease. The dog study suggests that there are.


Researchers at Schillerhoehe Hospital in Germany worked with specially trained dogs who were asked to smell the breath of 220 volunteers. The group included healthy patients, as well as people with lung cancer and chronic obstructive pulmonary disease. The dogs correctly identified 71 positive lung cancer samples out of a possible 100, the researchers write in the European Respiratory Journal. They also correctly identified 372 non-cancerous samples out of a possible 400.


Whats interesting about this is that the dogs were capable to detect cancer even in the presence of other factors, like tobacco smoke and COPD. Current lab tests for lung cancer cant do this. This suggests that there is indeed a VOC associated directly with lung cancer, which can be detected - at least by a dog - even in the presence of other compounds.


VOCs are emitted from the surface of cells as they undergo tumor-induced gene and protein changes. Identifying the VOCs that certain cells make can go a long way toward early diagnosis, when a scan might not be capable to detect anything.


Other researchers have been working on lab chips that can make the same diagnosis, without using dogs. Israeli researchers reported last year that their gold nanoparticle e-nose could differentiate among lung, breast, prostate and colon cancer - by differentiating among the VOCs.


But as weve seen before, sometimes dogs are simply the best sniffing technology out there. The Defense Department figured this out after spending billions of dollars on research. This new study suggests that doctors may be learning the same thing.


[ScienceDaily]




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 Post subject: Re: Nano-tecnology
PostPosted: Fri Oct 07, 2011 10:27 am 
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I need to do a 15-20 page research paper and I picked nanotechnology but I need to get more focused. I am thinking about doing it on the implications of nanotechnology on society.


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 Post subject: Quantum Dots Can Tag Individual Molecules With A Fluorescent
PostPosted: Tue Nov 29, 2011 8:18 pm 
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Quantum Dots Can Tag Individual Molecules With A Fluorescent Glow

Color-Changing Tagging Particles Gang Ruan, Ohio State University

A team of engineers at Ohio State University have filled a nanoparticle full of fluorescent blinking quantum dots. When the particle is attached to a single molecule, it functions as a gaudily glowing beacon.


With their bright, continuous fluorescent glow that transitions between red, green and yellow, the nanoparticle is a better way to tag molecules, both in its function and in its good looks.


Earlier attempts to tag molecules with bright quantum dots were hindered by the dots" on-and-off blinking, like trying to follow a blinking flashlight through a dark room. The Ohio State engineers fixed the faulty flashlight. Led by assistant professor Jessica Winter and research scientist Gang Ruan, the team placed a group of quantum dots inside a slightly larger plastic nanoparticle. Whenever a single quantum dot within the nanoparticle blinked off, the team simply followed the glow of its neighbors.


The team used green and red quantum dots. Nanoparticles filled with red dots glow red, while those with green dots glow green. The almost magical color changes occur in the nanoparticles containing a fuse of red dots and green dots. When a green dot blinks at the same time as a red dot neighbor, the light appears yellow to the eye. The quantum dot flashes fuse together to become blobs of color that melt away as other colored blobs materialize, making the nanoparticle look like a miniature lava lamp.


Using the new technology, which the Ohio State research team is trying to patent, scientists could gain a better glimpse of biological processes at a cellular level.


[ScienceDaily]




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 Post subject: Thermoelectric "Power Felt" Fabric Lets You Sit on
PostPosted: Thu Feb 23, 2012 8:14 am 
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Thermoelectric "Power Felt" Fabric Lets You Sit on Your Phone to Power It

Power Felt Wake Forest University

A team from Wake Forest Universitys Center for Nanotechnology and Molecular Materials has created a new thermoelectric fabric they call Power Felt. Its constructed of "tiny carbon nanotubes locked up in flexible plastic fibers," though the final product looks and feels like fabric, and creates and electrical charge from changes in temperature--like, say, touching it with your hot finger, or sitting on it with your hot butt (hot in this case referring to temperature and thus wholly inoffensive science).


Thermoelectrics isnt a new field, but its mostly been hampered by expensive materials that can cost up to $1,000 per kilogram. But Corey Hewitt, a graduate student at Wake Forest and member of the Power Felt team, says the new plan could drastically bring down the price. For something small, like a cellphone case, the addition of Power Felt could cost as little as a dollar extra. And there are all kinds of possible applications, from apparel to car seats.




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