Tag: "floor" at biology news

What we can learn from the biggest extinction in the history of Earth

...e Permian and early Triassic periods. As the ocean floor sank, new, younger layers of limestone formed on top of deeper, older ones. Since then, plate tectonics have turned these rocks on their side. Now, Payne and his colleagues can walk back in time across the formerly horizontal layers. Marine fossil ...

Indo-Pacific coral reefs disappearing more rapidly than expected

...urveys tallied coral cover, a measure of the ocean floor area covered by living corals. Scientists rely on coral cover as a key indicator of reef habitat quality and quantity, similar to measuring an area covered by tree canopy as a gauge of tropical forest loss. Coral cover declined from 40 percent in t...

Coelacanth fossil sheds light on fin-to-limb evolution

...with their heads down, hovering just above the sea floor using an organ in their nose to detect living things in the mud. It was astonishing luck that we found it, Friedman said, adding that the fossil had fallen off a cliff a couple of hundred feet high and landed in a different set of rocks. The four-...

MIT team building robotic fin for submarines

...orm a variety of functions, from mapping the ocean floor to surveying shipwrecks. But the MIT team hopes to create a more maneuverable, propeller-less underwater robot better suited for military tasks such as sweeping mines and inspecting harbors-and for that they are hoping to mimic the action of the blue...

NJIT professor says certain home shapes and roofs hold up best in hurricane

...hurricane-prone regions. A home with a square floor plan (or better a hexagonal or octagonal plan) with a multiple-panel roof (4 or more panels) was found to have reduced wind loads. Roofs with multiple slopes such as a hip roof (4 slopes) perform better under wind forces than gable roofs (2 slope...

Salvage logging, replanting increased biscuit fire severity

...val, the addition of more fine fuels to the forest floor during the logging operation, or the growth of new trees that for several decades may be very vulnerable to new fires. The study is not, researchers said, an indictment of salvage logging it may still have value for economic purposes or to assure ...

Swabs not reliable for detecting lead dust in homes

...ns, a person rubs the swab onto a small patch of a floor to collect a dust sample. The yellow tip will turn pink or red if lead is present. The instructions say the swabs will instantly detect lead in dust at levels that exceed the EPA standard of 40 micrograms per square foot for floors. It is not clea...

Studies assess effectiveness of serotonin and nerve stimulants on irritable bowel syndromes

... with laxatives and biofeedback (retraining pelvic floor muscle coordination using exercises and electronic aids that create feedback when successful muscle contraction occur) underwent test stimulation, each serving as their own control. The effect of temporary sacral nerve stimulation was assessed by a ...

New deep-sea hydrothermal vents, life form discovered

...ence Foundation (NSF) to explore the Pacific Ocean floor off Costa Rica. Scientists from Duke University,...(R/V) Atlantis, the researchers are studying ocean floor geology of the East Pacific Rise, one of the mid-ocean ridge systems where new crust is made as the ...

Mystery of fossilized trees is solved

.... Branches from the trees would have fallen to the floor and decayed, providing a new food chain for the bugs living below. "This was also a significant moment in the history of the planet. The rise of the forests removed a lot of Carbon Dioxide from the atmosphere. This caused temperatures to drop and t...

AACR Annual Meeting showcases significant developments in understanding and targeting cancers

...nd the Next Generation," a day-long program on the floor of the AACR meeting that will feature educational lectures and a tour of poster displays and exhibits as well as a networking reception. Many of these high school students will be paired with mentors among the AACR membership for guidance and educati...

Invasive grass may impede forest regeneration

...ly, often forming thick organic mats on the forest floor that directly impede the regeneration of native woody species by blocking sunlight, and indirectly by blocking seeds from reaching the soil in order to germinate," says Chris Oswalt. "This grass, which can be easily overlooked in the understory, shou...

Microfossils unravel climate history of tropical Africa

...al properties. When such molecules sink to the sea floor and are buried in sediments where oxygen does not penetrate, they can be preserved for thousands of years. The ratios between the different molecules from the algal cell membrane can be used to approximate the past temperature of the sea surface. The...

Story tips from the Department of Energy's Oak Ridge National Laboratory, March 2007

...pathway for carbon in solution to move from forest floor carbon sources to the mineral soil, where it can contribute to the buildup of carbon stocks. The research, funded by the Department of Energy's Office of Science, provides another step toward predicting the fate of terrestrial carbon. [Contact: Ron W...

Smithsonian study concludes Caribbean extinctions occurred 2M years after apparent cause

...easured which animals and plants dominated the sea floor by weighing the fossils and monitoring changes in the proportional weights of different ecological groups through time. Ken Johnson and Jon Todd of London's Natural History Museum documented exact timing of coral and snail species, showing that up to...

Pioneering research into health benefits of beauty treatment

...s of our patients try different tablets and pelvic floor exercises but at least a third of them will not be better. At the moment the only alternatives are to put up with it, or consider a very big operation which often means the patient ends up with a stoma bag. Many patients just suffer in silence, but t...

UT-Houston scientists develop new procedure to differentiate human embryonic stem cells

... out and placed side by side, they would cover the floor of a classroom. According to Wetsel, transplantable alveolar epithelial type II cells can be explored as treatments for pulmonary genetic diseases, acquired lung disease, as well as lung trauma caused by car accidents, gunshot wounds and sports in...

Genes and genius: Researchers confirm association between gene and intelligence

...ild holding a vase, the vase broken to bits on the floor and the child crying. The person taking the test would have to put those pictures into an order that tells the story of how the child dropped the vase and broke it and then cried." The researchers studied DNA gathered as part of the Collaborative S...

Antarctic marine explorers reveal first biological changes after collapse of polar ice shelves

...ead clamshells littering an area on the dark ocean floor and pointing to the presence of a very rare "cold seep" essentially a sea floor vent spewing methane and sulphide. Seeps can create a temporary habitat for animal life in otherwis...

Looking for life on Jupiter's icy moon Europa

...s floor, associated with hydrothermal vents on the floor of the oceans, at different levels in the water column as plankton and nekton, and in and on the ice cover itself," Lipps noted. "Some of these might contain complex associations of life forms, including both micro- and macroscopic forms and consumer...

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(Date:8/22/2014)... the birds and the bees. But that old ... fertilized. The fertilization process for flowering plants is ... male and female reproductive cells. New research from ... Munich, and including Carnegie,s Wolf Frommer, David Ehrhardt, ... signaling process that guides flowering plant fertilization. It ...
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