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caps in Biological News

February 2009 Geology and GSA Today media highlights

... Perron and Huybers ask whether the polar ice caps on Mars contain a similar record of orbital changes. The martian polar caps contain hundreds of meters of layers composed of ... of the polar cap. Because the age of the polar caps is unknown, it is not currently possible to ...

EPA and USDA should create new initiative to better monitor nutrients

... the larger process of allocating nutrient loading caps -- which entails delegating responsibilities for ... basin states should allocate nutrient loading caps for the river basin, including selecting an ... the experience gained in setting nutrient loading caps in the Chesapeake Bay watershed, as it provides ...

AGU journal highlights -- Jan. 28, 2008

... vulnerable. Noting that the plateau ice caps of Baffin Island, Arctic Canada, are sensitive ... 1958. Linear projections suggest that all ice caps on the island's plateau will disappear by 2070 ... margins have receded, the authors find that ice caps are now the smallest that they have been since at ...

'Experiment of nature' examines how mother's diet may impact on child's health

... effects can occur through a process known as DNA methylation, where methyl caps bind to our DNA and act like dimmer switches on our genes. Now, Dr ... growth, as adults. It found that the IGF2 gene had 5 per cent fewer methyl caps in "famine babies" than in their siblings born outside this period. ...

American Chemical Society's Weekly PressPac -- June 3, 2009

... synthetic cork, or screw caps. Boxed wine had less MPs up to 45 percent less than any other packaging. Bottles sealed with synthetic cork and screw caps performed best, with natural corks associated with the highest levels of MPs. One concern with the boxed wine, however, was evidence of greater ...

Jeepers creepers: Climate change threatens endangered honeycreepers

... extent of forest bird habitat, the authors wrote. The inversion layer forms as cool, dry air meets warm, moist air, creating an inversion layer that caps moisture and cloud development between 5,900 and 7,900 feet (1,800 and 2,400 meters). Over the past 24 years, the height of this layer has remained ...

Unlikely life thriving at Antarctica's Blood Falls

... environments, including the subglacial lakes of Antarctica and perhaps even on other icy planets in the solar system such as below the Martian ice caps or in the ice-covered oceans of Jupiter's moon Europa. ...

Origin of claws seen in 390-million-year-old fossil

... Unlike its ancestors from the Cambrian period, which reached three feet in length, Schinderhannes is only about 4 inches long. This finding caps almost 20 years of study by Briggs on the Hunsrck Slate. "Sadly, the quarry from which this fabulous material comes has closed for economic reasons, ...

Nano-tetherball biosensor precisely detects glucose

... ) The nanotubes extend out of the pores, and then palladium metal is deposited inside the pores, eventually forming cube-shaped caps at the top of each pore. This palladium nanocube is then coated with gold, which is compatible with biological molecules. The researchers then ...

Inflammation worsens danger due to atherosclerosis

... hyper-activated immune cells. They found that inflammation leads to a reduction of mature collagen in atherosclerotic plaques, leading to thinner caps that are more likely to rupture. They then identified a collagen-maturing enzyme, lysyl-oxidase (LOX), which represents a novel target in ...

CSHL scientists discover a new way in which epigenetic information is inherited

... is "silenced." How these DNA capping patterns, which are inherited, are precisely set is not yet known. But in some cases, enzymes that add these caps are guided to DNA by small RNA molecules. These guides themselves do not carry hereditary information, but they do mark the spots where DNA is to be ...

FSU joins coalition working to improve nation's power grid

... Center for Advanced Power Systems (CAPS) has joined a prominent national coalition that seeks to transform the nation's electric power systems. caps is now a member of the GridWise Alliance, a group of 69 leading companies and academic institutions whose goal is to combine their knowledge and ...

Photosynthesizing bacteria with a day-night cycle contain rare chromosome

... compounds. Oddly, the linear chromosome was missing some features that linear chromosomes in complex organisms display. Without obvious protective caps called telomeres, for example, Cyanothece must use an unidentified way to preserve the integrity of its linear chromosomes when it reproduces. ...

Sun Microsystems and Aware, Inc. Announce Integration of Aware's BioSP with Sun Identity Management Solutions

... biometric enrollment and enabling biometric credentials for smartcard issuance and multi-factor authentication." "The completion of this project caps off a substantial effort by technical staff of both companies to deliver and deploy an identity management solution with comprehensive biometric ...

UNH researchers test sediment-scrubbing technology in NH river

... feet of sand. But dredging is expensive, disrupts habitats and poses the problem of how to move and where to put all that toxic sediment. Sand caps have questionable long-term effectiveness and can hinder boat traffic and impact aquatic life. "There's no silver bullet. What we are exploring is ...

NASA expert to address Earth's vanishing polar ice, April 10, at UD

... nine field expeditions to remote regions of the Greenland Ice Sheet, which is a frozen reservoir for 8 percent of the fresh water on Earth, and ice caps in the Canadian Arctic. As head of NASA's Cryospheric Sciences Branch, Abdalati leads a group of scientists who work with satellites and aircraft ...

Cellular scale drug delivery from the inside out

... "capped" to safely seal the drug inside. Once the caps are in place, the nanospheres are "washed" to ... they're released is the focus of Lin's work. The caps can be dendrimers, biodegradable polymers, genes, ... the target cells, a trigger is used to pop the caps off and release the drug. "We're looking at ...

Adult stem cells from human cord umbilical cord blood successfully engineered to make insulin

... engineered adult stem cells derived from human umbilical cord blood to produce insulin. The researchers announced their laboratory finding, which caps nearly four years of research, in the June 2007 issue of the medical journal Cell Proliferation, posted online this week. Their paper calls it "the ...

Iowa State scientists demonstrate first use of nanotechnology to enter plant cells

... nanoparticle has a unique "capping" strategy that seals the chemical goods inside. In previous studies, his group successfully demonstrated that the caps can be chemically activated to pop open and release the cargo inside of animal cells. This unique feature provides total control for timing the ...

Short chromosomes put cancer cells in forced rest

... carrying a mutation that predisposed them to Burkitt’s lymphoma, a rare but aggressive cancer of white blood cells. Telomerase helps maintain the caps or ends of chromosomes called telomeres, which shrink each time a cell divides and eventually - when the chromosomes get too short - force the cell ...

Osteoarthritis may be sign of faster 'biological ageing'

... ageing" in white cell DNA. Biological ageing is likely to be reflected by the gradual shortening of telomeres, the length of DNA which caps the tips of chromosomes. A host of factors make them shorten over time, including insufficient repair of the damage caused by oxygen free radicals ...

New GI technologies improve internal organ visualization

... first injected 24 patients (12 colonoscopy and 12 endoscopy) with a single dose of fentanyl as pre-medication, then administered propofol using the caps system and its dosing algorithm and safety shell--a control safeguard software program. Data was downloaded from the sedation device to a laptop ...

Aging cells, aging body: Fresh evidence for a connection

... the most important biomarker is telomere dysfunction-induced foci, or TIFs. Presence of these structures signals that the protective chromosome caps called telomeres have dwindled enough to halt cell division. Scientists painstakingly counted the cells with aging biomarkers. What they found: ...

Rice bioengineers pioneer techniques for knee repair

... were tailored three-dimensionally to fit a specific rabbit femur. "If you told me 10 years ago that we would be making entire articular end caps via self assembly I would have said you were crazy," said Athanasiou. "The fact that we can do this is an indication of how far the discipline of ...

Scientists map one of biology's critical light-sensing structures

... die at the end of the growing season." The accomplishment of the Wisconsin researchers, including first author graduate student Jeremiah Wagner, caps a 30-year quest by biologists to drill down to the inner workings of how plants, fungi and bacteria use light to guide their development. It will ...

Census of Marine Life explorers surprised by diversity, density of Arctic creatures

... Baseline data about such long-inaccessible marine species will have growing importance for measuring impacts of climate change and, should polar caps continue receding, hypothetical new disturbances on the northern ocean such as energy exploitation, fishing and shipping. The research compares ...

Biochemists report discovery of structure of major piece of telomerase; implications for cancer

... of a major domain of telomerase, the enzyme that helps maintain telomeres ?small pieces of DNA on the ends of chromosomes that act as protective caps -- allowing DNA ends to be copied completely when cells are replicated. This is the first major piece of telomerase for which the structure is ...
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