News tagged with electric signal
Abnormal EKG can predict death in stroke patients
People who suffer an ischemic stroke and also have an abnormality in the heart's electrical cycle are at a higher risk of death within 90 days than people who do not have abnormal electrical activity at the time of emergency ...
Medicine & Health / Diseases, Conditions, Syndromes
Mar 20, 2009 |
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Link between epilepsy and Alzheimer’s uncovered
(PhysOrg.com) -- Scientists have discovered what could be causing Alzheimer’s disease sufferers to go on to develop epilepsy.
Medicine & Health / Neuroscience
Mar 19, 2009 |
4 / 5 (2) |
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Shifting sound to light may lead to better computer chips
By reversing a process that converts electrical signals into sounds heard out of a cell phone, researchers may have a new tool to enhance the way computer chips, LEDs and transistors are built.
Mar 16, 2009 |
4.2 / 5 (5) |
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The Day the Sun Brought Darkness (w/Video)
On March 13, 1989 the entire province of Quebec, Canada suffered an electrical power blackout. Hundreds of blackouts occur in some part of North America every year. The Quebec Blackout was different, because ...
Space & Earth / Space Exploration
Mar 13, 2009 |
4.4 / 5 (10) |
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Researchers Design Electronic Amplifier Capable of Functioning in Extreme Temperatures
(PhysOrg.com) -- Missions to space require 'warm' boxes, which protect electronic circuitry from extreme temperatures and exposure to radiation. Electrical engineering researchers at the University of Arkansas ...
Mar 09, 2009 |
5 / 5 (4) |
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Novel electric signals in plants
Using ion-selective micro-electrodes electrical signals in plants moving from leaf to leaf could be measured. The speed of the signals spreading as voltage changes over cell membranes ranged from 5 to 10 cm ...
Mar 09, 2009 |
4 / 5 (1) |
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Cats' eye diseases genetically linked to diseases in humans
About one in 3,500 people are affected with retinitis pigmentosa (RP), a disease of the retina's visual cells that eventually leads to blindness. Now, a University of Missouri researcher has identified a genetic ...
Medicine & Health / Medical research
Mar 04, 2009 |
5 / 5 (1) |
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Self-Programming Hybrid Memristor/Transistor Circuit Could Continue Moore's Law
(PhysOrg.com) -- As researchers strive to increase the density and functionality of circuit elements onto computer chips, one newer option they have is a memory resistor (or “memristor”), the fourth passive ...
Feb 26, 2009 |
4.5 / 5 (46) |
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Engineers tune a nanoscale grating structure to trap and release a variety of light waves
People debating politics are well-advised to shed more light than heat. Engineers working in optical technologies have the same aspiration.
Feb 17, 2009 |
4.6 / 5 (5) |
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De-multiplexing to the max: 640 Gbits/second
Sliced light is how we communicate now. Millions of phone calls and cable television shows per second are dispatched through fibers in the form of digital zeros and ones formed by chopping laser pulses into bits. This slicing ...
Feb 02, 2009 |
5 / 5 (3) |
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Researchers examine developing hearts in chickens to find solutions for human heart abnormalities (Video)
When it is head versus heart, the heart comes first. The heart is the first organ to develop and is critical in supplying blood to the rest of the body. Yet, little is known about the complex processes that regulate the heartbeat. ...
Medicine & Health / Medical research
Jan 21, 2009 |
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