Tag: "sunlight" at medical news
Study shows light therapy to effectively treat mood disorders, including SAD
...od attempts to recreate the increased intensity of sunlight
that occurs in nature in the summer when the sun rises earlier in the day. "The logic here is that it might put people with seasonal affective disorder into remission," Golden said. Still, the exact mechanisms by which light therapy works remain uncl...
Sunshine mapping from space means brighter solar energy future
... market in photovoltaics the direct conversion of sunlight
to electricity has an annual turnover of 600 mill...from the Sun, and photovoltaic plants that convert sunlight
into electricity. In both cases precise, long-term irradiance data is needed for choosing plant loc...
Mood lighting: Penn researchers determine role of serotonin in modulating circadian rhythm
...eatment of SAD, a mood disorder related to reduced sunlight
during winter. "People with seasonal affective disorder will respond to medications such as Prozac to increase serotonin," says Sehgal. "Patients also respond to light therapy. We now believe that light is also increasing serotoninperhaps this is why...
South Polar ozone hole makes big comeback
...polar spring arrives, the combination of returning sunlight
and the presence of polar stratospheric clouds leads to splitting of chlorine into highly ozone-reactive radicals that break ozone down into individual oxygen molecules. A single molecule of chlorine has the potential to break down thousands of molec...
Breath of the dragon: ERS-2 and Envisat reveal impact of economic growth on China's air quality
...MACHY is a spectrometer, and it works by measuring sunlight
either transmitted, reflected or scattered by the Earth's atmosphere or surface in the ultraviolet, visible and near infrared regions. Mathematical inversion of these data yields the amounts and distribution of trace gases, ozone and related chemica...
Timing of women's labor may determine effectiveness of pain medication
...d body temperature. Some rhythms are controlled by sunlight
and others are controlled internally. The researchers found that women who labored between noon and 6 p.m. got an average of 27 percent longer pain relief from a single dose of the spinal-epidural medication fentanyl than women whose labor was betwe...
Talk therapy more effective long term treatment for SAD than light therapy, study finds
...e fluorescent or full-spectrum light will simulate sunlight
and make them feel better. The treatment works re...o the shortening of daylight hours and the lack of sunlight
in winter. The theory goes that as seasons change there is a shift in people's "biological internal ...
Expert dispels bird flu paranoia
...for four to five days, but can be stopped by heat, sunlight
and most detergents. Authorities have confirmed the dangerous H5NI strain of bird flu in South East Asia, Russia and Eastern Europe but not in Australia. They fear an epidemic if this strain mutates to spread into a people-to-people virus. "We nee...
In SAD patients, autumn antidepressants can prevent winter depression
...nknown, SAD appears related to reduced exposure to sunlight
during the fall and winter in northern latitudes-genetic factors likely play a role as well. As in the current study, many patients with SAD are not treated with antidepressant medications, despite having many previous episodes of seasonal depressio...
MSG-2 will advance long-term monitoring of Earth's energy balance
...backward by air molecules in the atmosphere. Other sunlight
is absorbed by trace gases, dust, or water vapour ... or ocean. The air, land or sea that absorbs this sunlight
becomes heated up by it, and this heat is eventually emitted back into space at longer, thermal wave...
Melanoma risk only partially associated vith exposure to UVB from sunlight
...sure to ultraviolet B (UVB) radiation, the rays in sunlight
that increase in summer and cause sunburn. The rep...ay that ultraviolet A (UVA) radiation, the rays in sunlight
that reach the deeper layers of skin and are associated with signs of aging, can damage the DNA in m...
Vitamin D supplementation during pregnancy could reduce osteoporosis in children
...if they are pregnant during the winter months when sunlight
levels are low, should help their children's bones grow stronger. Professor Cooper states: "These findings provide evidence that maternal vitamin D status during pregnancy influences the bone growth of the offspring, and their risk of osteoporosis in...
Counseling children about skin cancer important, but rarely done
...anning and melanoma." UV light occurs naturally in sunlight
and is responsible for the tanning and burning eff...age to cells than UVA. The composition of natural sunlight
on a sunny day is about 90 percent to 95 percent UVA and 5 percent to 10 percent UVB. Newer sunlamps...
Space suit technology can protect workers from heatstroke
...tect astronauts carrying out space walks in direct sunlight
is now being used to develop protective clothing t...event them from overheating when exposed to direct sunlight
during space walks." In Europe alone, the inability to shed excess heat and moisture through clothi...
Researchers reveal possibility of separating anticancer properties of vitamin D
...amin D is responsible for the protective effect of sunlight
exposure on the incidence of several other cancers besides colon, including breast and prostate. Byers and the research team suspected that beta catenin may interact with vitamin D in some fashion because of another known fact -- activation of beta c...
Small study points to addictive effects of frequent tanning
... in tanning behavior. UV light occurs naturally in sunlight
and is responsible for the tanning and burning effects of the sun. Artificial UV light is used in tanning beds and sunlamps. In 2004, the Wake Forest researchers reported on a study in which participants had tanning sessions in two identical-looking ...
Skin disease common among Hispanic farmworkers in North Carolina, research shows
...cer as a potential health problem, yet exposure to sunlight
is a major risk factor for the disease. The interv... the delayed effects of some risk factors, such as sunlight
exposure, need to be stressed."...
New engineering center to transform sensor technology
...ts to "see" certain chemicals in the same way that sunlight
and the human eye reveal everyday objects. "When viewed in the mid-infrared, the world is alive with chemicals like ammonia, carbon, methane, carbon dioxide, carbon monoxide and benzene," said Fraser. "The ability to detect or monitor these gases wit...
UCI scientists find chlorine may contribute to ozone formation
...han expected. It must be rapidly produced, because sunlight
destroys it so quickly," Saltzman said. "Most likely the process involves airborne marine particles, but research is needed to understand how it occurs." Inland ozone levels typically are higher than on the coast, mainly because of meteorological con...
New sunscreen ingredient to heal sunburn and help prevent skin cancer
...produce harmful radicals during exposure to bright sunlight
in order to prevent the unwanted side reactions th... children Then use factor 15+ sunscreen "UVB sunlight
is associated with the hottest part of the day, between 10am and 3pm, when the sunlight