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sheet in Biological News

Sediment yields climate record for past half-million years

... to gauge the extent of the ancient Laurentide Ice sheet that covered much of North America during the last 130,000 years. As that ice sheet calved off icebergs into the Atlantic, Rashid ... been released to carry it, meaning that the ice sheet itself had to have been larger. "Based on ...

January-February GSA Bulletin media highlights

... and implications for sensitivity of the Irish Ice sheet to climate change Jorie Clark et al., School ... mud identify two re-advances of the Irish Ice sheet from the north and central lowlands of Ireland ... of near-contemporaneous retreat of the Irish Ice sheet from its maximum Killard Point stadial limit. A ...

From sheet metal elements to host cells: DFG launches 10 new collaborative research centers

... Developing a range of optimisation options for sheet metal elements is the aim of the new ... Complex Functional Elements using Fine Gauge sheet Secondary Forming Elements sheet Metal Mass Forming" the scientists involved aim ...

AGU journal highlights: Nov. 11, 2008

... 1. Ups and downs of Greenland's ice sheet Studies have indicated that the Greenland ice sheet is thinning, likely because of increasing average ... this correlation, they determine that the ice sheet lost mass during the warm period before 1970, ...

March GEOLOGY and GSA TODAY media highlights

... the Amundsen Sea sector of the West Antarctic Ice sheet have been observed during the last two decades, ... that a major retreat of the West Antarctic Ice sheet is in progress. Until now, however, there has ... long-term evidence that current rates of ice sheet thinning in this part of the West Antarctic ...

Tipping elements in the Earth's climate system

... politics. Arctic sea-ice and the Greenland Ice sheet are regarded as the most sensitive tipping ... due to global warming. The West Antarctic Ice sheet is probably less sensitive as a tipping element, ... elements, smallest uncertainty: Greenland Ice sheet - Warming over the ...

Exploration of lake hidden beneath Antarctica's ice sheet begins

... that could drain ice from the West Antarctic Ice sheet to the ocean and contribute to sea-level rise. ... have been discovered beneath Antarcticas vast ice sheet and so far little is known about them. Getting ... to the ice above they may influence how the ice sheet flows. Their potential for unusual life forms ...

Antarctic ice loss

... colleagues estimated the flux of ice from the ice sheet into the ocean from satellite data that cover 85% ... The authors conclude that the Antarctic ice sheet mass budget is more complex than indicated by the ... are significant and may in fact dominate the ice sheet mass budget. This conclusion is contrary to model ...

Got calcium? UWM researcher finds that food labels confuse consumers

... of the women were given a one-page calcium fact sheet including the formula for converting %DV to ... of calcium. The women who were given the fact sheet consumed significantly more average daily calcium ... than women who were not given the fact sheet (a mean of 988.24 milligrams). Current ...

Cell movements totally modular, Stanford study shows

... They were looking to see the movements of individual cells and overall sheet movements as cells filled the open space. "We stained the nuclei and ... don't need to activate and inactivate thousands of proteins to control sheet movements," Vitorino said. "Instead they simply coordinate the activity of ...

Digital zebrafish embryo provides the first complete developmental blueprint of a vertebrate

... from the single cell stage to 20,000 cells: a Digital Scanned Laser Light sheet Microscope, that scans a living organism with a sheet of light along many different directions so that the computer can assemble ...

Antarctic fossils paint a picture of a much warmer continent

... global warming, there was no significant melting of the East Antarctic ice sheet inland of the Dry Valleys, nor were there dramatic changes in ... If this conclusion stands the test of time, it suggests a very robust ice sheet in this sector of Antarctica, and stresses the complex and potentially ...

The good, the bad and the smelly: USGS at the 2008 Coral Reef Symposium

... ext. 221, caroline_rogers@usgs.gov . Also, check out the new fact sheet on coral diseases following the massive bleaching event in 2005; it can be ... Muller at 321-674-7323, emuller@fit.edu . Also, check out the new fact sheet on coral diseases following the massive bleaching event in 2005; it can be ...

A warming climate can support glacial ice

... lead author of the study, with strong evidence to conclude that an ice sheet about 50-60 percent the size of the modern Antarctic ice cap existed for ... large glaciers on the poles prior to the development of the Antarctic ice sheet about 33 million years ago, said Richard Norris, professor of paleobiology ...

October Geology and GSA Today media highlights

... of interglacial lake sediment preserved beneath the Laurentide Ice sheet J.P. Briner, University at Buffalo, Department of Geology, 876 NSC, ... quickly, and thus more attention should be given to the Greenland Ice sheet when predicting future sea level, particularly within the context of ...

AGU journal highlights -- Sept. 6, 2007

... observed reconnection. When local collision rates are lowered, the current sheet is shortened and the effective dissipation is enhanced, both of which ... rate. At the global scale, when collision rates are fixed, the current sheet length increases along with the global size, effectively lowering the ...

LSU professor looks for life in and under antarctic ice

... that large quantities of liquid water exist beneath the Antarctic ice sheet have changed the way biologists view life in Antarctica. More than 150 ... required for microbes in the atmosphere to be transported through the ice sheet and enter an Antarctic subglacial lake. Even though cells are preserved ...

August 2009 Geology and GSA Today media highlights

... employ a coupled ice sheet-atmospheric general circulation model in an attempt to simulate both observed glacioeustatic changes and inferred ice sheet volumes. Their simulations present paradoxical results. While ice volumes of similar size to those implied by proxy evidence are simulated, sea-level ...

Seals quickly respond to gain and loss of habitat under climate change

... population. The Antarctic population crashed and much diversity was lost." This habitat was released after the retreat of the grounded ice sheet in the Ross Sea Embayment 7,500-8,000 years ago, and is within the range of modern foraging excursions from the Macquarie Island colony. Using ...

Biologist discovers pink-winged moth in Chiracahua Mountains

... Walsh discovered L. leeae while collecting one evening at Onion Saddle, at about 7,700 feet in the Chiracahuas. Collecting involves illuminating a sheet with mercury vapor lamps. Moths are attracted by the lights and will land on the sheet. "This large moth flew in and we didn't think much of it ...

Preclinical work shows how one gene causes severe mental retardation

... period seen in Angelman syndrome, typically when children are between one and two years old. It is during this time in humans that the cortex, the sheet of convoluted folds at the surface of the brain, undergoes profound rearrangements driven by sensory experiences the experience of seeing ...

Wetlands likely source of methane from ancient warming event

... ever for a climate change study. The researchers cut away 15 tons of ice from a site called Pakitsoq at the western margin of the Greenland ice sheet to collect the ancient air trapped within. Methane exists in low concentrations in this air and only a trillionth of any given amount contains the ...

Unlikely life thriving at Antarctica's Blood Falls

... is two-to-three-stories thick. Even less forgiving are the conditions found below the Taylor Glacier, an outlet glacier of the East Antarctic Ice sheet in the otherwise ice-free Dry Valleys. The lack of light beneath the glacier makes the process of photosynthesis improbable, causing researchers to ...

Two innovative University of Texas at Austin biologists become HHMI Early Career Scientists

... in a dish of pond water. He later found that activating a single gene in the embryos triggers a series of shape-shifting events that curl a flat sheet of cells into a closed neural tube. This tube later develops into the spinal cord and brain. Improper closure of the neural tube leads to birth ...

Making a point: Picoscale stability in a room-temperature AFM

... away and return to exactly the same spot (potentially useful for nanoscale manufacturing). At this scale, its like trying to hold a pen and draw on a sheet of paper while riding in a jeep, observes NIST physicist Thomas Perkins. A few instruments in specialized labs, including some at NIST, solve this ...

'Climate change: Global risks, challenges and decisions'

... which our society and economy have developed and thrived. These parameters include global mean surface temperature, sea-level rise, ocean and ice sheet dynamics, ocean acidification, and extreme climatic events. There is a significant risk that many of the trends will accelerate, leading to an ...

CO2 drop and global cooling caused Antarctic glacier to form

... in about 100,000 years, which is an "overnight" shift in geological terms. "Just over thirty-five million years ago, 'poof,' there was an ice sheet where there had been subtropical temperatures before," said Co-author Matthew Huber of Purdue University. Another theory refuted by this study is ...

Lower increases in global temps could lead to greater impacts than previously thought, study finds

... additional contributions to sea level rise from melting of both the Greenland and possibly Antarctic ice sheets may be larger than projected by ice sheet models assessed in the AR4, and that several meters of additional sea level rise could occur on century time scales. The United Nations ...

January GEOLOGY media highlights

... where Arabia and Africa are separating to create a new ocean. Observations of earthquakes and the motion of Earth's surface show that each new sheet of volcanic rock is about 10 km long, about 2 m wide, and created rapidly over approximately hour-long time scales. The new sheets of rock are ...

Timetable for Puget Sound restoration suffers setback

... 2005, from a location near Seattle and adjacent to Tacoma, Wash. This careful chemical analysis of the sediment layers provided a historical rap sheet of toxins including lead, arsenic and copper. Like the concentric rings of a tree, each centimeter of mud delicately displayed a historical ...

USGS Science Picks

... instrumentation used to measure movement of the Earth's crust. For more information on USGS presentations at the conference, you can view our tip sheet at http://www.usgs.gov/newsroom or contact Leslie Gordon at 650-329-4006 or lgordon@usgs.gov. For meeting information, visit ...

bioMETRX, Inc. Highlights 3rd Quarter 2008 Financial Results

... represents a 430% increase over second quarter revenues of $100,000. -- The Company added $300,000 of intangible assets to its balance sheet as a result of the Sequiam asset purchase. "We have seen a steady increase in sales of our products over the last three months. Today, ...

Orchid Cellmark Reports Third Quarter 2008 Financial Results

... However, we believe the fundamentals of our core business are sound; we have achieved efficiencies in our operations; and we have a strong balance sheet with $15.9 million in cash at the end of the quarter. The DNA identity testing market offers growth opportunities with market dynamics favorable in ...

New life beneath sea and ice

... lakes have yet to be obtained, the lower 80m or so of the Vostok ice core represents lake water that progressively freezes onto the base as the ice sheet slowly traverses the lake. "Microbial cell and organic carbon concentrations in this accreted ice are significantly higher than those in the ...

Measuring water from space

... orbit the planet, it is possible to measure the change in mass of water or ice in different regions. The method has shown that the Greenland ice sheet is losing about 150 gigatonnes of ice each year, two thirds of which is large chunks of ice flowing rapidly into the sea. The combined effect of ice ...

What is really happening to the Greenland icecap?

... radio waves have a problem with penetration of the signal into the snow. And, yet another method from satellites, measuring the 'weight' of the ice sheet covers too large areas - so you also detect weight changes outside the ice sheet." But at least these multiple sources of data have the potential of ...

Communication Intelligence Corporation Reports Third Quarter 2008 Financial Results

... Weighted average common shares outstanding 129,057 111,530 129,057 108,891 Selected Consolidated Balance sheet Information (Dollars in thousands) 09/30/08 12/31/07 ...

Collegiate Inventors Competition recognizes top student inventors

... of Michigan (Advisor: Nicholas Kotov) Ultra-strong and Stiff, Optically Transparent Plastic Nanocomposite An ultra-strong, transparent plastic sheet with properties approaching the values of steel and its alloys. "This year's finalists are immersed in innovative, important work," said Jeffrey ...

Salk researchers successfully reprogram keratinocytes attached to a single hair

... amounts of biological samples. "We plucked a single hair from a co-worker's scalp and cultured the keratinocytes, which are found in the outer root sheet area," recalls Aasen. He then successfully reprogrammed these cells into bona fide KiPS cells. Just why keratinocytes appear to be much more ...

AGU journal highlights -- Oct. 16, 2008

... paper 10.1029/2008GL034698, 2008; http://dx.doi.org/10.1029/2008GL034698 5. Antarctica ice-sheet loss modeled The West Antarctic Ice sheet has been rapidly losing mass to the oceans over recent decades. The most significant losses have occurred across the Amundsen Sea coastline, where ...
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