Tag: "sunlight" at biology news
Hanging baskets of sex and death help fruit growers
... a cover that shields the virus supply from direct sunlight
one application of virus could serve for an extend...cess for the moths while protecting the virus from sunlight
and other elements, and the best form of pheromone lure. That test also helped them choose between a...
Coming to the Arctic near you: The longer, hotter summer
...s high-latitude albedo a measure of the amount of sunlight
reflected off a surface - a change most pronounced in winter. "Summer warming is more pronounced over land than over sea ice, and atmosphere and sea-ice observations can't explain this," said Terry Chapin, professor of ecology at the University of A...
MERIS monitoring tracks planetary photosynthesis levels
... process called photosynthesis to convert incoming sunlight
into chemical energy, along the way producing all the oxygen we breathe. The fraction of incoming solar radiation useful for photosynthesis that is actually absorbed by vegetation a value known as the Fraction of Absorbed Photosynthetically Activ...
Research advances understanding of how hydrogen fuel is made
...have enzymes known as hydrogenases that simply use sunlight
and water to generate hydrogen-based energy. "Understanding how oxygen reaches the active site will provide insight into how hydrogenase's oxygen tolerance can be increased through protein engineering, and, in turn, make hydrogenase an economical sou...
North Sea efficient sink for carbon dioxide
...algae fixing carbon dioxide under the influence of sunlight
(photosynthesis). This mechanism is important in the North Sea. Algae grow in the surface water and form their cell material by assimilating carbon dioxide from the seawater. This reduces the carbon dioxide concentration in the seawater thereby allow...
$6.5M nanomedicine center includes Yale engineer
...k Foundation to develop novel materials to convert sunlight
into electricity, will oversee design of the biobattery for the Center. "This focus is intended to leverage our significant understanding of ion transport at the molecular level," said LaVan, who chaired a group at the 2004 National Academies Keck Fu...
Odd energy mechanism in bacteria analyzed
...ntained by photosynthesis, in which plants convert sunlight
into biological energy through a process that requ... now clear that SAR11 has its own mechanism to use sunlight
energy that does not involve chlorophyll. Rather, it uses retinal, the same protein used by the eye...
Discovering the first steps in transcription-coupled repair
...paired preferentially. In XP patients, exposure to sunlight
typically causes hyper-pigmented skin that is dry ...pauses and sometimes grinds to a halt. Exposure to sunlight
causes decreased transcription when ultraviolet-induced DNA damage blocks RNAPII. Transcription-coup...
Ozone levels may raise risk of underweight births
...al solvents and natural sources and is worsened by sunlight
and heat. The study findings echo results from the few, smaller studies examining the relationship between ozone and birth weight. Animal studies support the role of O3 in reduced birth weight: in these models, pregnant rats were particularly vulnera...
Plants reveal a secret and bring researchers nearer a cleaner future
to power our homes and offices is an unaccomplished dream due to the still inefficient technology for a better use of solar energy. The study of photosynthesis in plants could provide new clues by explaining how they absorb almost 100% of the sun-lig...
Study: Temperate forests could worsen global warming
...end to warm the Earth because they absorb a lot of sunlight
without losing much moisture. In one simulation, t...uptake of carbon dioxide would offset warming from sunlight
absorption. But after several decades, carbon dioxide would begin diffusing from the ocean into the ...
Fish gene sheds light on human skin color variation
...ible for humans to live outside the tropics, since sunlight
is essential to generate the vitamin D required to prevent rickets, a condition causing bones to become weak. Team members suggest that the gene they have identified played an important role in that adaptation in Europeans....
Ultraviolet B light exposure associated with increased risk of skin cancer
... Cancer Institute. Exposure to UV radiation from sunlight
is a risk factor for the two most common skin cancers, basal cell carcinoma and squamous cell carcinoma, and for the less common and potentially lethal skin cancer cutaneous malignant melanoma. UV-B radiation can cause strands of DNA to break in sun-...
Sun protection for plants
...ca and rice producers in Asia. Very high levels of sunlight
can be hazardous to plants, overwhelming their ability to photosynthesise. This effect is exaggerated when there is a shortage of water or extreme temperatures. The resulting damage to the delicate photosynthetic membranes in the plant leads to impai...
NJIT solar physicists report paradox: Less sunlight, but temps rise
reaching the Earth's surface has not translated in...has increased since 2000. The result has been less sunlight
reaching the Earth's surface. "Our findings have significant implications for the study of climat...
Satellite portrait of global plant growth will aid climate research
... (BAE), the area of green leaf exposed to incoming sunlight
for photosynthesis, known as Leaf Area Index (LAI), the sunlight
actually absorbed for photosynthesis, known as the Fraction of Absorbed Photosynthetically Active Ra...
Virginia Tech researcher examining malignant melanoma in horses
...de pale complexion and hair, exposure to excessive sunlight
and sunburns and aging. Horses at risk also have a pale coat of grey to white and there seems to be a correlation to aging, which could be a result of chronic exposure to sunlight, he said. In each, the disease is an infiltrated pigmented malignanc...
Plant enzyme efficiency may hold key to global warming
...g photosynthesis, plants and some bacteria convert sunlight
and carbon dioxide into usable chemical energy. Scientists have long known that this process relies on the enzyme rubulose 1,5-bisphosphate carboxylase/oxygenase, also called RuBisCO. While RuBisCO is the most abundant enzyme in the world, it is al...
Study finds no safe level for ozone
...ns react with sunlight. Levels typically rise when sunlight
and heat are highest in the summer. "Over 100 million people in the United States live in areas that exceed the National Ambient Air Quality Standard for ozone. Elevated concentrations of ozone are also a growing concern for rapidly developing nation...
The critical importance of mangroves to ocean life
.... Once in the ocean, however, the intense tropical sunlight
destroys some of the most delicate dissolved organ... dissolved organic matter survives the attack from sunlight
or bacteria. The authors measured the chemical signature in water samples from the massive mangrove...
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