Tag: "sun" at biology news
Leader in cancer treatment and prevention research honored
...lecular targets in the skin, thus reversing severe sun
damage, and we have initiated diagnostic studies of early precancerous lesions in the breast, using novel nipple lavage capabilities." Dr. Alberts will give an award lecture, entitled "Cruising Down the Chemoprevention Superhighway with my Awesome Re...
Bush nominates NJIT space explorer Louis Lanzerotti to NSF governing board
...to investigate many unanswered questions about the sun
and its effects on the earth's space environment. Over a career spanning four decades, he has contributed to research that includes studies of space plasmas and geophysics, and engineering problems related to the impact of space processes on terrestr...
Green tea research leads to gum and other products
...ering ROS are inadvertent; for instance, excessive sun
exposure can increase ROS to the point of irreversible cell damage. Chronic exposure to carcinogens and certain drugs also can damage salivary gland cells. Dr. Hsu and his colleagues found that when they added EGCG to cells, the polyphenols increased...
Analysis of biological clock may lead to greater understanding of human disease
... system that takes its cues from the sun. When the sun
rises it affects the light-sensitive neurons of the brain of the fruit fly, setting off reactions of proteins at a certain rate depending on the amount of light. The reactions set the clock. There are key proteins and two key feedback loops involved,...
Unicellular organisms contribute more nitrogen to ocean that reported earlier
...turally occurring gases that traps energy from the sun
and helps maintain hospitable temperatures on Earth, creating the "greenhouse effect." But studies indicate that greenhouse gases that form from vehicle and industrial emissions are enhancing the greenhouse effect and contributing to global climate w...
Continents played key role in collapse and regeneration of Earth's early greenhouse, geologists say
...6 billion years to the Earth's birth, we'd see our sun
shining 20 to 25 percent less brightly than today. Without an earthly greenhouse to trap the sun's energy and warm the atmosphere, our world would be a spinning ball of ice. Life may never have evolved. But life did evolve, so greenhouse gases must...
Concerns remain about UVB damage to amphibians
...s in warm, shallow waters because they are seeking sun
and heat, and they need to hatch and grow quickly before the water evaporates or freezes. "Those types of behavior do not change overnight just because the Earth's atmosphere may have changed," he said. "It's not that simple. Moreover, as ponds dry ...
Promising research: From employment issues to virology
...ial System" focuses on the interaction between the sun
and the earth's atmosphere. Solar physicists, envi... fluctuations in solar radiation on the earth. The sun
"flickers", so that different amounts of radiation reach the earth's surface at different times. The...
Other highlights in the May 19 JNCI
...color, eye color, skin color, and skin reaction to sun
exposurehave focused on families in which melanoma...s enhanced by three risk factors: number of moles, sun
exposure, and sunburn. Studies such as this one may help to improve the prediction of melanoma risk...
The UV advantage
...lishment by demonstrating how moderate exposure to sun
has powerful health benefits in his new book, The ... die of diseases that can be prevented by sensible sun
exposure. I am not advocating a return to the baby oil and sun
reflector tanning days of the past. ...
Model shows long-held constant in ocean nutrient ratio may vary as ecological conditions change
...lausmeier explained. "They capture energy from the sun
and have a big role in biogeochemical cycles -- how elements cycle through the biosphere. Phytoplankton have a main role in the carbon cycle. They need carbon dioxide to grow, so they suck it out of the atmosphere, controlling its presence there. And...
Transplant rejection averted by simple light exposure in Stanford animal study
... cells - to ultraviolet light using a sunlamp. The sun
exposure depleted the Langerhans cells and effectively protected the mice from the disease, said Merad, who is now based at the Mount Sinai School of Medicine. The researchers said the results present a promising option for transplant patients and co...
Newfound grasshopper takes to the trees on Konza Prairie
... large, dark-colored female hoppers basking in the sun
on the stone wall of the old ranch house at Konza in mid-October 2002. Wright, also an entomologist, subsequently collected five males and females from hackberry tree trunks in October 2003. Melanoplus punctualatus, the Grizzly grassho...
How do animals exposed to 24-hour light retain their wake-sleep habits?
...rodents, which had undergone 82 days of continuous sun
above the horizon, had a crisp, 24-hour day-night ...nset. The researchers hypothesize that because the sun
during this period is nearer the horizon at one part of the day, this might act as a clue for the bi...
National Academies advisory: NAS Annual Meeting April 17-20
...arming and the extent to which observations of the sun
have influenced our interpretations of global temperature increases since the late 1970s. APRIL 19, 8 P.M. TO 9 P.M. -- AWARD CEREMONY. Recipients of NAS awards in 2004 will be honored, including MAURICE F. STRONG, who received the Academy's mos...
'Knock out' rose receives Texas superstar and earthkind designation
...e leaves and receive eight hours or more of direct sun
each day," said George. "Then incorporate three to four inches of finished compost into the soil prior to planting. Keep the soil surface covered with three inches of organic material year round." "If someone tells me that roses are too hard or need...
Brood X cicadas will cause limited damage to trees, yard plants across eastern U.S.
...le," Clay said. "They are not very active when the sun
goes down, so the massive noise we'll hear in the daytime will subside, allowing people to sleep." In addition to filling knowledge gaps in scientists' understanding of Brood X, Clay's NSF project, which officially began March 1, will also explore t...
'Meeting of the minds' leads new era in fight against cancer
... proteomics to fight ovarian cancer; the effect of sun
on cancer prevention, immune response. Symposia and Forums: covering a diverse range of timely topics of critical interest to the broad cancer community, as well as state-of-the-art cancer research development reviews....
Cancer rates in teens and early 20s rising
...ntributing. For example, melanoma rates (linked to sun
exposure) had almost doubled over 21 years and in the 20-24 year age group now accounted for one in 10 of all cancers. "Exposure of a young child or fetus to environmental carcinogens during periods of rapid growth and development might lead to high...
Molecular mechanisms that trigger flowering in spring
... as the movement of leaves to optimise exposure to sun
light, or the opening and closing of pores on the leaves to reduce water loss during the day. These behaviours are controlled by the circadian clock, an internal timer that takes 24 hours to complete one cycle. Bnning proposed that the circadian cloc...
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