'Silent' DNA speaks up for the first time
...side cannot function. Our evidence indicates that heating the cells activates these proteins, causing a heat-responsive gene to be expressed at a very high rate." Using yeast as a model because it has many genes in common with humans, Gross and Sekinger raised the cells' temperature from its normal 86 ...Scientists monitor global air pollution from space
...missions from the burning of fossil fuels for home heating and transportation, a major source of air pollution during the wintertime in the Northern Hemisphere, can be seen wafting across much of the hemisphere. The most dramatic features, however, are the immense clouds of carbon monoxide from forest and ...Shift from forest to crops lowers temperatures
...he forestedNortheast. This was because the daytime heating of agriculturalstations across the Midwest was consistently lower than that of theforested northeastern stations. The result was a surprise, because previous regional climate studiesshowed that the Midwest should have a larger daily temperature range...Burning now an option to clean up ocean oil spills previously thought incombustible
... laboratory experiments, two electrically operated heating panels were used to supply an external radiant heat source. The panels were positioned over a pool of water about ten inches deep. The researchers poured oil and water emulsions to a desired thickness on the water and then applied the external heat...Earliest human ancestors discovered in Ethiopia
...hronology Center by employing an argon-argon laser heating method -- a process that determines the time elapsed since volcanic ashes and lavas were erupted by measuring the argon gas trapped in the rock after it cools. "The argon dating results were corroborated by geomagnetic polarity data, then further co...NTP plans to look at common viruses, radiation, cooking by-products for new carcinogen report
...oline (or MeIQ), a substance formed in food during heating or cooking and found in cooked meat and fish. Cob... like MeIQ (second item), is formed in food during heating and cooking and is found in cooked meat and fish. 4,4'-Thiodianiline, which is an intermediate in t...Researchers uncover a piece of nature's secret nitrogen formula
...rises in the world, involving a complex process of heating dangerously combustible hydrogen under very high pressures. Meanwhile, in the ground just outside these nitrogen-fixation factories, tiny bacteria are also pulling nitrogen from the air-but they are doing it at room temperature and at everyday pressu......in an electrophoresis gel. It works by selectively heating the gel molecules enough to release the proteins without breaking them. Once the molecules are freed, an electric field pushes them into a mass spectrometer, a conventional instrument that provides a precise measurement of the protein's mass, an impo...Univ. of Fla. professor: Air cleaning system destroys Anthrax, other pathogens
...ively inexpensively and quickly in office and home heating and air conditioning systems, says Yogi Goswami, a UF professor of mechanical engineering and director of UFs Solar Energy and Energy Conversion Laboratory.There are other technologies for air cleaning, but for air disinfection, there is no more effe...Holiday fruit ranks number one in antioxidants
...sgiving meal. In general, processing, storage and heating reduces the antioxidant levels in cranberries: uncooked fruit is the best, says Vinson. On the basis of serving size, 100 percent pure cranberry juice, found in some health food stores, has the highest antioxidant content. Many people prefer not to d...Canadian researchers find cancer suspect from grilled meat in human milk
...rolysis, a chemical reaction that is caused by the heating of muscle (meat), particularly the reaction between meat proteins and a nitrogenous compound called creatinine. The higher the temperature at which meat is heated, the more PhIP that is formed. The process also forms other heterocyclic amines, but Ph...Antarctic mud reveals ancient evidence of global climate change
...searchers, the most pristine continent on Earth is heating up primarily because of increased greenhouse gas emissions from cars, power plants and other human endeavors elsewhere on the planet. But new geologic evidence unearthed from deep-sea mud deposits strongly suggests that Antarctica experienced periods...Discovery of bacterial 'touch sensor' could lead to biofilm treatments
...t with antibiotics. Biofilms corrode pipes, infect heating and cooling devices and slow down ships by making the hulls move less smoothly through the water. Otto, a postdoctoral researcher in Silhavy's lab, used a variety of techniques to pinpoint the touch-sensing mechanism. First, she created a strain of b...Electrodes and nanoprobes signal new DNA detection method
...ates the expensive and currently necessary step of heating the gene chip and also improves upon optical detection methods reported previously by Northwestern in Science. Once optimized, the technology could be used to quickly and easily detect biological weapons such as anthrax and smallpox as well as a wide...The path to a folded protein, long a subject of debate, appears in many cases to be long and winding
... proteins with a one-nanosecond laser, momentarily heating them enough to unfold the proteins completely. Using infrared spectroscopy, they then observed, nanosecond by nanosecond, how quickly the cohort of proteins refolded into biochemically stable, three-dimensional shapes. It turned out that the time t...Scientists conduct first DNA field tests on Antarctic soil microbes
..., Cary says, but never above 0C unless we had some heating device. At best, we could get the temperature inside the tent up to 10C, so at least the pipettes worked and the buffers were liquid, instead of frozen. The scientists worked in the field for nearly two weeks. Every few days, they were helicoptered t...April GEOLOGY and GSA TODAY media highlights
...ntain range. It then poured out onto the seafloor, heating the seawater much above its usual icy temperatures and causing a brief flowering of deep-sea life. The source of the lava has been a subject of considerable debate among volcanologists and geophysicists. Some scientists thought that it must have come...May media highlights: GEOLOGY and GSA TODAY
...e traditionally been interpreted as the product of heating of the brecciated (broken) rocks beneath the many impact craters on the Moon by younger igneous intrusions or impact melt bodies. In the Vredefort dome in South Africa, however, fine-grained granulites displaying many similarities to the lunar granul...Global aluminium waste headache solved
...rial in the furnace. The fuel combusts at the tip, heating and melting the incoming feed materials, and the injected gases cause vigorous agitation and rapid reactions. Globally there are now 30 smelting plants using the core SIROSMELT technology which are used primarily for copper, zinc, lead and tin smelti...New research supports the link between cooking and carcinogens
...aining potato produced significant acrylamide upon heating in microwaves or conventional ovens. The study also found that more acrylamide forms as food is heated to higher temperatures. "I would say that boiling at 100 degrees Celsius is the only safe cooking method," said Margareta Trnqvist, Ph.D., lead aut...