In this nitric oxide (NO) generator, which can be incorporated into a mechanical ventilator or anesthesia machine, air is taken in through the inlet on the left and passes
by the electrode at the top of the vertical segment, where a series of sparks generates NO gas.
They found that the activity picked up
by the electrodes at the two «hot spots» tracked with peak activity at these sites, as measured by fMRI.
Not exact matches
The device, developed
by Dong Song, a professor of biomedical engineering
at the University of Southern California, consists of
electrodes implanted directly in the brain.
A copper - glass seal binding the insulator and terminal post center
electrode together helps protect against misfires
by ensuring the full required voltage
at the spark gap.
The new
electrode grid, developed
by a team of researchers
at the University of California San Diego and Massachusetts General Hospital, is about a thousand times thinner — 6 micrometers versus several millimeters thick — than clinical
electrode grids.
At Duke University Medical Center in North Carolina, researchers have surgically implanted electrodes in the brains of monkeys and trained them to move robotic arms at MIT, hundreds of miles away, just by thinkin
At Duke University Medical Center in North Carolina, researchers have surgically implanted
electrodes in the brains of monkeys and trained them to move robotic arms
at MIT, hundreds of miles away, just by thinkin
at MIT, hundreds of miles away, just
by thinking.
«This means that one can control
at will in which
electrode the heat is released
by simply using the proper molecule.»
Both of the painful procedures, but not the other stimuli, elicited an identically large response, detectable
by an
electrode placed
at the top of the head approximately half a second later.
The prosthesis proposed
by John Pezaris, an assistant in neuroscience
at Massachusetts General Hospital (MGH) in Boston —
at least as it's envisioned
at this early stage — would be worn like a pair of eyeglasses, with digital cameras over a person's eyes that connect to an array of
electrodes implanted in the brain.
The project, headed
by Mark Humayun, a professor of ophthalmology and biomedical engineering
at the Keck School of Medicine of the University of Southern California, involves an implant consisting of 60
electrodes attached to the retina that conduct information from an external camera to the retina to provide a rudimentary form of sight to patients with the implants.
Another planned clinical trial involves a miniaturized neural
electrode the size of a couple of kernels of corn, pioneered
by neuroscientist Richard Andersen
at Caltech.
The new system, developed
by neurologist Niels Birbaumer and his team
at the University of Tübingen in Germany, consists of a computer screen in front of a locked - in patient and connected to
electrodes that register the person's brain activity.
Usually, in small - molecule junctions, electrons «pushed» through the junction
by the applied bias make the leap continuously, from one
electrode into the other, so that the number of electrons on the molecule
at each instant of time is not well - defined.
An early version created
by Donald Sadoway, a materials scientist
at the Massachusetts Institute of Technology in Cambridge, and colleagues consisted of a top
electrode made from liquid magnesium, a bottom
electrode of antimony, and a molten salt electrolyte in between.
A fuel cell converts chemical energy into electricity
by reacting hydrogen and oxygen
at two different
electrodes.
(A) Development of the free calcium ions measured
by the calcium ion selective
electrode (black line)
at pH = 9.25 in comparison with the dosed amount of calcium ions (red line).
In 1999, a group led
by Mathieu Kociak and Helene Bouchiat
at the University of Paris, South, in Orsay, France, reported in Science (28 May 1999, p. 1508) that ropes of 100 or so nanotubes could carry supercurrent between two superconducting
electrodes.
To do this, they «chemically assembled a series of double - dot SETs
by anchoring two gold nanoparticles between the nanogap
electrodes with alkanedithiol molecules to form a self - assembled monolayer,» explained Yutaka Majima, a professor in the Materials and Structures Laboratory
at the Tokyo Institute of Technology.
Kensuke Kobayashi (Professor, Graduate School of Science, Osaka University) and Sadashige Matsuo (Assistant Professor, Graduate School of Engineering, The University of Tokyo), in cooperation with research groups led
by Teruo Ono (Professor, Institute for Chemical Research, Kyoto University) and Kazuhito Tsukagoshi (Research Fellow, International Center for Materials Nanoarchitectonics, National Institute for Materials Science), produced graphene samples capable of forming p - n junctions
by combining gate
electrodes and performed precise measurements of current - fluctuation («shot noise») in the graphene p - n junction in the QH regime in the strong magnetic fields and
at low temperatures.
An international team led
by researchers from the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) used advanced techniques in electron microscopy to show how the ratio of materials that make up a lithium - ion battery
electrode affects its structure
at the atomic level, and how the surface is very different from the rest of the material.
The
electrode stunt was dreamed up
by a group of US army reservists working as military policemen
at the prison.
Two years ago, an international team of researchers showed that
by manipulating electron spin
at a quantum magnetic tunneling junction — a nanoscale sandwich made of two metal
electrodes with an insulator in the middle — they could induce a large increase in the junction's capacitance.
Later, the flies» hearing was tested
by playing a series of song pulses
at a naturalistic volume, and measuring the physiological response
by inserting tiny
electrodes into their antennae.
They did it
by penning the plasma in with magnetic fields generated
by electrodes and magnets
at each end of the long tube.
This mapping pinpointed the origin of Owen's seizures in the left temporal lobe, enabling physicians to target the optimal location for placement of the NeuroPace RNS Neurostimulator, a titanium microprocessor measuring about one
by two inches, which is connected to
electrodes implanted
at the site of seizure origin.
Scalp
electrodes worn
at night
by nine villagers during nine nights revealed biological signs of relatively light sleep compared with Westerners, including shorter periods of slow - wave and rapid eye movement sleep.
By applying the method developed in this research, measurement of the negative ion flow
at places still closer to the plasma
electrode is possible for clarifying more detailed mechanism of the negative ions extracted as a beam.
Developed
by a team
at Pusan National University in South Korea, the battery is made from
electrode strands coiled into a hollow core and surrounded
by an outer
electrode tube.
I am sitting in a darkened, closet - size lab
at Tufts University, my scalp covered
by a blue cloth cap studded with
electrodes that detect electric signals from my brain.
When one attempts to recharge a battery
by reversing the direction of electric current flow, the opposite takes place: a reduction reaction proceeds
at the negative
electrode, and an oxidation reaction takes place
at the positive
electrode.
In the single - atom qubit used
by Morello's team, and which Tosi's new design applies, a silicon chip is covered with a layer of insulating silicon oxide, on top of which rests a pattern of metallic
electrodes that operate
at temperatures near absolute zero and in the presence of a very strong magnetic field.
In 2003, however, researchers
at the University of Groningen in the Netherlands who mounted single molecules of diarylethene between gold
electrodes found that, even though the switches could be turned off
by visible light, they could not then be turned back on
by ultraviolet.
In March 2002, the journal Nature detailed the work of scientists
at Brown University in Rhode Island who implanted
electrodes in the brains of monkeys that allowed the primates to move a computer cursor just
by thinking about it.
â $ œWe canâ $ ™ t be that hard on Penfield, because the number of cases where he was able to study head movement was quite limited, and studying head motion as he did,
by applying an
electrode directly to the brain, creates some challenges, â $ says lead author Buz Jinnah, MD, professor of neurology, human genetics and pediatrics
at Emory University School of Medicine.
«Capturing the Transient Species
at the
Electrode - Electrolyte Interface
by In Situ Dynamic Molecular Imaging.»
A new study
by neuroscientists
at the University of Chicago shows how amputees can learn to control a robotic arm through
electrodes implanted in the brain
Scientists
at Wake Forest Baptist Medical Center and the University of Southern California (USC) Viterbi School of Engineering have demonstrated a neural prosthetic system that can improve a memory
by «writing» information «codes» (based on a patient's specific memory patterns) into the hippocampus of human subjects via an
electrode implanted in the hippocampus (a part of the brain involved in making new memories).
By contrast, he says, «I need
at least a fifty - year survival of the
electrode.»
By carefully controlling the voltages at electrodes positioned on the edges of the pixels, it is possible to spread the colored particles across the pixel or remove them from view altogether by hiding them behind the electrodes, says Lensse
By carefully controlling the voltages
at electrodes positioned on the edges of the pixels, it is possible to spread the colored particles across the pixel or remove them from view altogether
by hiding them behind the electrodes, says Lensse
by hiding them behind the
electrodes, says Lenssen.
By employing proprietary pretreatment and processing, researchers
at Oak Ridge National Laboratory and Drexel University have produced flexible polymer carbon composite films from scrap tires for use as
electrodes for supercapacitors.
The graph shows the degree of shyness or behavioral inhibition (BI) and the N400 amplitude evoked
by anger
at the Pz
electrode for each subject.