Fanny Chathyoka, a midwife at a rural clinic in landlocked Malawi in southern Africa, used to use light from her cell phone when treating patients at night.
For this to work, the light from the cancer cell has to go through the round filtering lenses in a straight line.
The near-infrared photoactive polymer absorbs more near-infrared light but is less sensitive to visible light, balancing solar cell performance and transparency in the visible wavelength region.
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When illuminated, these "opsin" proteins change the flow of electrically charged ions within the cell, to help the cell turn light into energy or as a sensory cue.
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Following his arrest in Oaxaca last year, Habacuc Cruz Cruz, a union organiser in the state, says that he was severely beaten and kept for three to eight days at a time in a tiny cell without light or ventilation, which measured just one square metre.
In a process called LED photomodulation, the light stimulates the production of cell-producing proteins under the skin's surface.
If I take a nanoshell and I attach it or place it directly next to a cell that I want to destroy and shine light on it then it will convert the light to heat and it will very gently destroy the cell.
The most high-end product, called the S250, provides up to 12 hours of light per day, and includes a cell phone charger.
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They found the voltage generated when the liposomes were exposed to light was high enough to make a nerve cell fire.
In a corner of the cell, in a pool of light directly under a small window, a veiled woman has just finished her prayers.
In 2002 MIT professors started a not-for-profit called BioBricks that has collected 2, 000 biological components, including gene sequences that sense light, produce light, send messages between cells and switch cell functions on and off.
To remedy this problem, Kylie Catchpole of the Australian National University in Canberra and Albert Polman of the Institute for Atomic and Molecular Physics in Amsterdam have been trying to redirect the light that falls onto the surface of a cell in such a way that all colours are efficiently absorbed.
Fifteen years from now, people will write how your light bulb contains more processing power than your first cell phone.
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Scientists have for the first time created laser light using living biological material: a single human cell and some jellyfish protein.
After Baldwin refused to turn off his cell phone, with the seat belt light on for departure, he walked into the toilet with his phone, the airline said.
In September, 1986, after several months of sharing a cell with another hostage, Anderson was, for no apparent reason, returned to solitary confinement, this time in a six-by-six-foot cell, with no windows, and light from only a flickering fluorescent lamp in an outside corridor.
Additional cell sites in Northeast and Central Wisconsin will light up throughout 2012 as the company continues its 4G rollout.
That means a smaller area of cell can be used to convert a given amount of light into electricity.
When the light hits the cytochromes inside the fibroblasts' mitochondria, it stimulates the cell's energy transport system.
By changing the composition of the dye, G24's engineers ensure that the maximum sensitivity of the cell coincides with whatever frequency mix is appropriate for the artificial light concerned.
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The UCLA team describes a new kind of polymer solar cell (PSC) that produces energy by absorbing mainly infrared light, not visible light, making the cells nearly 70% transparent to the human eye.
ENGADGET: UCLA creates transparent solar cell, dreams of current generating windows
The all-carbon formula doesn't need to be thickly spread to do its work, and it simply lets visible light through -- it could layer on top of a traditional solar cell to catch many more of the sun's rays.
It transforms only around 0.1% of the infra-red light thrown at it into electricity (compared with 20% for an ordinary solar cell).
To measure the refractive indices of different parts of a cell they use a technique called interferometry, which involves splitting a beam of light in two.
The judges ordered an investigation after Gabriele said that for more than two weeks he had been kept in a cell so small that he could not extend his arms, and that the light had been left on day and night.
Organic polymers are a fundamentally new way of converting electricity to light, a process at the heart of all displays--TVs, computer monitors, cell phone screens.
Should we avoid talking on cell phones, place our beds far away from electric outlets, or stop using CFL light bulbs?
Today the agency proposed a new requirement that, if finalized, will require warnings on the use of ultraviolet light-emitting tanning beds by individuals under age 18 because of the increased risk of melanoma, squamous cell carcinoma, eye damage, and premature skin aging.
Concerns exist over the application of solar energy in portable devices such as cell phones, which are typically stored in pockets or purses and therefore are not constantly exposed to light.
It is intended to deliver ambient light rather than directed light for tasks, and contains a nickel-metal-hydride battery, rather than a cheaper nickel-cadmium cell.
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