Brightening prospects of using fluorescent nanotubes in medical applications
..., says Hertel. These factors include: Nanotubes emit light in a very narrow range of wavelengths, or colors. This makes it easier to pick out their signal against background noise. Furthermore, they produce light in a part of the spectrum the near infrared where skin and other tissue is transparent t...WFU to host international conference of physicists
...tillators are substances, generally crystals, that emit pulses of light when they absorb high-energy radiation such as gamma rays. Improvements in scintillator crystals are yielding not only important findings in high-energy particle research and astrophysics but timely and practical applications in oil e...Texas A&M study proves pollution from China And India affecting world's weather
...power plants to sustain such growth. All of these emit immense quantities of pollution much of it soot and sulfate aerosols into the atmosphere, which is carried by the prevailing winds over the Pacific Ocean and eventually worldwide. Using satellite imagery and computer models, Zhang says that in r...In presence of fragrant cleaning products, air purifiers that emit ozone can dirty the air
...rticles, scientists found. Certain ionic purifiers emit ozone as a byproduct of ionization used for chargi...ing them to metal electrodes. Ozonolysis purifiers emit ozone at higher levels on purpose with the ostensible goal of oxidizing volatile organic compounds i...Custom-made cancer cell attacks
...such as radioiodine decay in a predictable way and emit radiation while that is happening. Bearing that principle in mind, researchers can make custom types of radioactive chemicals or radioisotopes that will attack cancer cells in a more efficient way than current cancer treatments. Ruth will disc...National Inventors Hall of Fame announces 2007 inductees
...ombination of chemicals caused living organisms to emit light, Chappelle facilitated important findings within the fields of biology and chemistry, including developing techniques for detecting bacteria in such items as food and water. David Cushman (1939-2000) and Miguel Ondetti (1930-2004) Captopril ...Cell phone use not linked to cancer risk
...bout health risks among users. Cell phone antennas emit electromagnetic fields that can penetrate into the human brain, and scientists have wondered if this might cause tumors in the head or neck. Joachim Schz, Ph.D., of the Danish Institute of Cancer Epidemiology in Copenhagen, Denmark, and colleagues p...Pure carbon nanotubes pass first in vivo test
...d Smalley, discovered that nanotubes fluoresce, or emit near infrared light. Because near-infrared light passes harmlessly into the body, biomedical researchers are keen to use carbon nanotubes for the noninvasive diagnosis and treatment of diseases such as cancer and atherosclerosis. In the current stu...Soot from wood stoves in developing world impacts global warming more than expected
... in developing countries suggest that these stoves emit more harmful smoke particles and could have a much greater impact on global climate change than previously thought, according to a study scheduled to appear in the Nov. 1 issue of the American Chemical Society journal Environmental Science & Technolo...German researchers develop first non-invasive test to measure skin aging
...es of laser infrared light to stimulate tissues to emit light at shorter wavelengths -- blue in the case of collagen, and green in the case of elastin. Since the upper layer of the skin, called the epidermis, is virtually transparent to infrared light, the infrared laser can reach the dermis with intense...MIT researchers watch brain in action
...(so-called because it uses two infrared photons to emit fluorescence in tissue), which allows imaging of living tissue up to 1 millimeter deep, enough for researchers to see proteins expressed within individual neurons within the brain. They then created a mouse model in which a coding portion of the A...Cell phone emissions excite the brain cortex
... million people in the world use cell phones which emit electromagnetic fields (EMFs). Though many studies have looked at the effects of EMFs on the body, few have focused on their effects on the brain. Such effects could be harmful, neutral, or beneficial and might be particularly important for individua...New contrast agents may be on horizon for better medical imaging
...at these little particles capture the neutrons and emit alpha and gamma rays, and that energy -- sent out from an accelerator -- is what can be used to kill cancer cells. "In looking at this, we both said, 'Holy cow!' These little gadolinium particles capture neutrons at four times a greater rate than bo...How to cut energy waste in China, India, Brazil said crucial to forestalling climate change
...major greenhouse gas emitters. Although today they emit just 10% as much greenhouse gas per capita as North America, their national emissions are rising far faster. China's emissions, for instance, are expected to double by 2020, in which case China will surpass the US as the leading source of climate-alt...Many cleaners, air fresheners may pose health risks when used indoors
... many common household cleaners and air fresheners emit toxic pollutants at levels that may lead to health...devices marketed as "air purifiers" that purposely emit ozone into the indoor environment.) The research team's first task was to determine which household ...Carbon-based quantum dots could mean 'greener,' safer technology in medicine and biology
.... Scientists believe that metal-based quantum dots emit light by a somewhat different mechanism. The two-sided polymer coating allows researchers to attach antibodies or other labeling materials to the carbon dot, says Sun. This could lead to improved dyes for medical imaging and also the development of s...Indoor air purifiers that produce even small amounts of ozone may be risky for health
...trostatically attracting them to metal electrodes, emit ozone as a byproduct of ionization. Depending on the design, some ionic purifiers emit a few milligrams of ozone per hour, which is roughly equal to the amount emitted by a dry-process ph...New engineering center to transform sensor technology
...r advantage of quantum cascade lasers is that they emit light in regions of the spectrum known as the mid-infrared. The ability to produce and detect these wavelengths allows scientists to "see" certain chemicals in the same way that sunlight and the human eye reveal everyday objects. "When viewed in the ...Counseling children about skin cancer important, but rarely done
...d tanning beds (manufactured after 1970) typically emit 0.5 percent to 5 percent UVB radiation. Older units can produce 22 percent to 44 percent UVB. Studies indicate that both types of ultraviolet light may be responsible for melanoma formation. Research strongly points to a link between natural sun exp...Viral, gold nanoparticles can assemble themselves to potentially find and treat disease
...y - could possibly be "tuned" to destroy tissue or emit signals that can be detected by imaging devices. The system also can be adapted to form a flexible scaffold that can carry drugs, genes or even cradle restorative stem cells. "Gold is a perfect metal to perform these different functions, and scientis...