Got cancer Simple breath test can tell
Device Detects Disease Even Before Tumours Become Visible In X-Rays London: Scientists working on a breath test to detect cancer said they were now able to identify different types of the disease,in research to be published on Wednesday.
Their preliminary results,to be printed in the British Journal of Cancer,showed the researchers sensors could distinguish whether a patient had lung,breast,bowel or prostate cancer,irrespective of age,gender or lifestyle. Previous research,conducted at the Technion Israel Institute of Technology in the northern port city of Haifa,found that they could largely distinguish between the breath of healthy patients and cancer sufferers.
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“THESE KNOWLEDGE NOTES COULD ALSO BE PRESENTED AS A SEMINAR IN YOUR COLLEGE”
A brain-machine interface is a communication system that does not depend on the brains normal output pathways of peripheral nerves and muscles. It is a new communication link between a functioning human brain and the outside world. These are electronic interfaces with the brain, which has the ability to send and receive signals from the brain. BMI uses brain activity to command, control, actuate and communicate with the world directly through brain integration with peripheral devices and systems. The signals from the brain are taken to the computer via the implants for data entry without any direct brain intervention. BMI transforms mental decisions and/or reactions into control signals by analyzing the bioelectrical brain activity.
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BRAIN CANCER STOPPED BY SCORPION VENOM
Cutting the Spread of Tumors
Scientists have been looking at chlorotoxin, a peptide in scorpion venom
, for the past decade as a way to target cancer
cells. And the big payday has arrived. By combining nanoparticles with a scorpion venom mix already being investigated for treating brain
cancer, University of Washington
researchers found they could cut the spread of cancerous cells by 98 percent, compared to 45 percent for the scorpion venom alone (www.uwnews.org
This is the first time that nanoparticles, which are ultrafine particles
, have been combined with a treatment that physically stops cancer’s spread. “People talk about the treatment being more effective with nanoparticles but they don’t know how much, maybe 5 percent or 10 percent,” said Miqin Zhang, professor of materials science and engineering
. “This was quite a surprise to us.” She is lead author of the study.
binds to a surface protein on many types of tumors
, including brain cancer. Chlorotoxin also disrupts the spread of tumors.
The Whole is Greater than the Parts
The researchers investigated chlorotoxin when it is attached to nanoparticles and found that the treatment’s effect doubles compared to chlorotoxin alone. Adding nanoparticles often improves a therapy, partly because the combination lasts longer in the body and so has a better chance of reaching the tumor. Combining also boosts the effect because therapeutic molecules
clump around each nanoparticle.
Slowing the spread of cancer would be especially useful for treating highly invasive tumors, such as brain cancer. The technique could hypothetically also slow the spread of other tumors with the same kind of activity, such as breast, colon, skin, lung, prostate, and ovarian
Both Light and Sound Have Oscillating Waves
||Travels Through Vacuum?
||4 X 10^14
to 7 X 10 ^14
||About 700 mph
(about 340 m/sec)
(1 mile per 5 seconds)
||.02 to 20 meters
- Sound and light are waves in which the amplitude oscillates with time
- For pure tones or colors the oscillation is a sine wave with a fixed wavelength and frequency
- The wavelength is the distance between 2 peaks of the wave