Sentences with phrase «by electrical devices»

Positive ions are generated by electrical devices, by scented candles, by walking across carpet, and even by heating / cooling systems.

If you stay awake past dark, light emitted by electrical devices hampers your body's ability to produce melatonin.

Not exact matches

The Los Angeles - based company has developed technology that transmits ultrasonic waves (at a register well beyond what's audible) that are translated by devices as a microscopic quiver; this vibration is converted back into an electrical charge to power anything with a battery, no wires or wall plugs required.

On LinkedIn, the company says it «seeks to change the paradigm in energy storage by developing a completely new class of electrical energy device.»

Widely used by doctors and physical therapists to control pain and stimulate healing by passing electrical current through affected areas, the devices cost thousands of dollars and can be tricky to use, but Rahimi experienced immediate, lasting relief the first time he used it.

An electric car is an automobile that is propelled by one or more electric motors, using electrical energy stored in rechargeable batteries or another energy storage device.

Feb. 19, 2013 — A team at the NUS Department of Electrical & Computer Engineering led by Dr Qiu Cheng - Wei has come out with an optical device to «engineer» ghosts.

This was achieved by the transformer, an electrical device that only works with AC.

«By moving aberration estimation and correction out to computation, we can create a compact device that gives us the same surface area as the lens we want without the size, weight, volume and cost,» said Cossairt, an assistant professor of electrical engineering and computer science at Northwestern.

We drew blood samples to measure hormone levels and detected shivering by special devices placed on the skin that sense muscle electrical activity.»

The device, called a subcutaneous defibrillator, protects patients from sudden cardiac arrest by providing an electrical impulse to muscles surrounding the heart.

When they turned on a test lamp, the electrical efficiency of the device jumped by a couple of percent, he says.

The researchers tested the device prototype by applying their rehabilitation protocol — which combines electrical and chemical stimulation — to paralyzed rats.

Chua's equations suggested that a memristor's electrical resistance, or conductivity, would not be constant, like a lightbulb's, but dynamic, and determined by the history of the current that had flowed through the device.

Led by Professor Christopher James, Director of Warwick Engineering in Biomedicine at the School of Engineering, technology has been developed which allows electronic devices to be activated using electrical impulses from brain waves, by connecting our thoughts to computerised systems.

By contrast, most processors and random access memory (RAM) chips store information using electrical charge which is fast, but dissipates when the device is powered down.

NiO is a promising material for spintronic devices, where signals are transmitted not by electrical currents but rather by spin waves, consisting of propagating disturbances in the ordering of magnetic materials, in a domino - like fashion.

The creation of neural dust at Berkeley, led by Maharbiz and Jose Carmena, a Berkeley professor of electrical engineering and computer sciences and a member of the Helen Wills Neuroscience Institute, has opened the door for wireless communication to the brain and peripheral nervous system through tiny implantable devices inside the body that are powered by ultrasound.

By storing information using both spins and electrical charge, spintronic devices should have greater storage capacity and process data more quickly — although researchers still have years to go to figure out how to connect and process spintronically stored information in futuristic computers, conventional and quantum.

The ingenious device he employed for measuring G, called a torsion balance, had been built by the clergyman and amateur naturalist John Michell and was invented simultaneously by the French electrical pioneer Charles Coulomb, but in Cavendish's skillful hands it revolutionized the science of precision measurements.

Electrical energy is created when the device is compressed by human motion, or mechanical energy.

Implanted devices send targeted electrical stimulation to the nervous system to interfere with abnormal brain activity, and it is commonly assumed that neurons are the only important brain cells that need to be stimulated by these devices.

Many touch screens are made of layered thin (billionths of a meter thick) films of indium - tin oxide, an inorganic material that is electrically conductive, which allows electrical signals to travel from the «touch» to the edges of the display, where they are sensed by the device — as well as optically transparent.

Elizabeth Heidrich, a PhD student at Newcastle University in England and lead author of the new study, studies microbial fuel cells — devices that generate electrical current by capturing the electrons freed as bacteria break down organic matter in wastewater.

This new device was created by a team co-led by Erkan Tüzel, associate professor of physics, biomedical engineering, and computer science at WPI, and Utkan Demirci, professor of radiology and electrical engineering (by courtesy) at Stanford University.

Using a device engineered by Nan Marie Jokerst, Ph.D., a professor of electrical and computer engineering at Duke's Pratt School of Engineering, the researchers showed that UVB caused calcium to flow into the skin cells, but only when the TRPV4 ion channel was present.

The Nanoscale Advanced Integrated Systems (NAIS) Lab Team at Korea Advanced Institute of Science and Technology (KAIST), led by Professor Hyeon - Min Bae of the Electrical Engineering Department and researchers at OBELAB, a spin - off startup of NAIS Lab (hereinafter «the KAIST team»), is ready to launch its first NIRS device, NIRSIT, to the neuroimaging world as early as March 2016.

Most plasma cutters work best when the material being cut is a conductor, as the material can therefore complete the circuit and send the arc's electrical current back to the cutter device by means of a cable clamped to the target.

The findings highlight the ineffectiveness of passwords and device PINs in stopping unauthorized access by insiders, added electrical and computer engineering professor Kosta Beznosov, the paper's other senior author.

After two or more weeks of recording the activity, doctors program the device to specifically respond to these abnormal signals by delivering imperceptible electrical pulses to the brain that normalize the activity.

These defects were observed by measuring tiny electrical currents created when charges that were frozen in the traps at extremely cold temperatures escape by receiving a jolt of thermal energy as the device is heated, a process called thermally stimulated current.

«Our work has fundamental contributions by introducing electrical bias as a way to control the phase of an active material, and by laying the basic scientific groundwork for such novel energy and information processing devices,» Yildiz adds.

Medical therapies, airplanes and electrical devices are tested by independent entities before they can be used routinely: the public demands that this be done and takes for granted that it has occurred.

But now, after taking part in a clinical trial of a new device designed to quell the electrical storms in his brain, Hughes hopes he may never be laid low by a migraine again.

For example, the Internal Revenue Service will revamp its facility in Andover, Md., to reduce energy use by more than 25 percent through light monitors, rooftop photovoltaic solar cells, efficient electrical devices, and a geothermal heating and cooling system.

He and his colleagues say the electrical potential of the device could be driven up further by improving how the gels repel the ionised atoms and by making the gel layers even thinner.

The nanoscale refrigerator developed by the research group at Aalto University solves a massive challenge: with its help, most electrical quantum devices can be initialized quickly.

These predictions, which were verified by comparisons with high - resolution microscopic images of real molecules on metal surfaces, may lead to controlled, large - scale fabrication of tiny electrical wires and other nanomaterials for future devices.

Now, for the first time, a team of scientists led by Professor Simon Schultz and Dr Luca Annecchino at Imperial College London has developed a robot and computer programme that can guide tiny measuring devices called micropipettes to specific neurons in the brains of live mice and record electrical currents, all without human intervention.

In the journal Applied Physics Letters, which is produced by AIP Publishing, the scientists describe the theoretical framework for an acoustic diode — a device that achieves a one - way transmission of sound waves much the same as an electrical diode controls the one - way transmission of electrical impulses.

The findings could have significant implications for the development of brain - computer interfaces and neuro - prosthetics, which would allow a person to control a prosthetic device by tapping into the electrical activity of their brain.

Scientists in Australia have developed a «mind switch» which allows people to activate electrical devices - turn on a light, power up a radio - by thinking.

Understanding the electrical signals produced by, and the limits of this technology will contribute to next - generation devices with higher informational content.

The performance of biosensors, analytical devices that converts biological responses into electrical signals, can be improved by including nanoparticles as detection reagents.

Because this is the first device capable of providing both optical and electrical stimulation to neurons in the spinal cord, the new fiber shows promise to benefit not only future studies by CSNE members, but also spinal cord research conducted by members of the neuroscience and neural engineering communities at - large.

For example, electromechanical devices, e.g., micro actuators, microelectromechanical devices, or piezoelectronics, could have movable physical components that move up and down when stimulated by a mechanical force or an electrical or magnetic signal, thereby moving the overlying surface.

Regardless of the machine, the devices work by sending tiny electrical impulses through the body and measuring how quickly those impulses return.

In a world in which we're constantly surrounded by people, traffic and electrical devices, it can be easy to detach from what is real and lose touch...

The only hint that the monsters are around is that they juice up all electrical devices - including lights, cell phones, car alarms, whatever - so that their presences are announced by flickering lights and other spooky shit.

A rechargeable device most often made of lead plates covered in an electrolyte and protected by a plastic shell which supplies consistent electrical energy to a motor vehicle.