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Tag: "mass" at biology news

A frog's life is food for thought

...ssive meals equivalent to 50 percent of their body mass and maximise their digestive capability from the o...leled with the small intestine having increased in mass by 450 percent within just 36 hours." The results of Ms Cramp's study could have important implicat...

Biodiversity hotspots identify conservation priorities

...ost famous wildlife spectacles, the over wintering mass of monarch butterflies (Danaus plexippus) in the pine forests of Michoacan. Threats to the hotspot include logging and intentional burning to clear land for livestock or agriculture. Hotspots Revisited was produced by CEMEX, one of the world's large...

Low level of extinction during ice age linked to adaptability

...ture and sea levels. Those that were not died in a mass extinction that heralded the ice age's onset. "These results not only clue us in to what happened many millions of years ago, but they also have implications for understanding the modern marine ecosystem," said Matthew Powell, a doctoral candidate i...

Increased risk of osteoporosis associated with gene that one in five people have

...ty in both the spine and the upper femur. The bone mass of the spine proved not to be affected by genetic ...te peak bone density and would lose even more bone mass after menopause. If we can catch them at an early age, we can maximize their chances to avoid osteop...

Microbial forensics: The next great forensic challenge

...fense Analysis. Murch created the FBI's weapons of mass destruction forensic unit in 1996 and has been a leader in this area of our national response since then. "An effective program requires relevant, exploitative, fully validated methods and uses in all aspects of the forensic investigative process," ...

Super predators and mass extinctions

...d to cycles that correspond to our 26 million year mass extinctions. Previous models that do not show these sorts of cycles could be faulty, according to Lipowski, because they failed to account for the effects of limited living spaces shared by a large number of different species. A. Lipowski Phys. Rev...

NASA study finds snow melt causes large ocean plant blooms

... and evaporation of wet soil. As a result the land mass heats up more in summer creating a larger temperature difference between the water of the Arabian Sea and the Indian subcontinent landmass. The temperature difference is responsible for a disparity in pressure over land and sea, creating a low press...

Integration of Agilent's MS technology, Proteome Systems' software to help scientists in proteomics research

...lycomIQ software, a comprehensive platform for the mass spectrometric analysis of protein-associated glyca...h the Agilent XCT, XCT Plus and XCT Ultra ion trap mass spectrometers. Proteome Systems developed GlycomIQ to address the emerging field of glycomics, whic...

Scientists discover that three overlapping signals in embryo help get the backbone right

... Spemann and his student Mangold found that as the mass of cells in the embryo started to take form, a region in the embryo - what they called the "organizer" - seemed to be the source of signals to nearby cells, telling them to form back structures. What clinched their experiment was taking the organizer...

Oceans more vulnerable to agricultural runoff than previously thought, study finds

...on, caused by excessive algae growth. As the algal mass sinks, it is consumed by bacteria, which use up most of the oxygen in the water as they multiply. The result is an oxygen-depleted dead zone at the bottom of the sea where few creatures can survive. A massive dead zone appears every summer in the Gul...

Elephant seal pups suffer from ocean warming

...arching for food. As a result, they gain less body mass while pregnant and have fewer reserves to draw on ...raging time of about 36% (as well as a decrease in mass gained). After 1999, however, the declining trend abruptly stopped and the weaning weight of the pup...

Product improves peptide identification for proteomics research

...E: A) today introduced a high-performance ion trap mass spectrometer (MS) that allows pharmaceutical and a... improved scan cycle times, enabling collection of mass spectra at rates up to three times faster than its predecessors. "The combination of the new LC/MSD...

Low oxygen likely made Great Dying worse, greatly delayed recovery

The biggest mass extinction in Earth history some 251 million years... extinction rate and slowed recovery following the mass extinction, Huey said. "Biologists have previously thought about the physiological consequences of ...

Scientists reveal the shape of a protein that helps retroviruses break into cells

The biggest mass extinction in Earth history some 251 million years... extinction rate and slowed recovery following the mass extinction, Huey said. "Biologists have previously thought about the physiological consequences of ...

Scientists generate patient-specific stem cells, Science study says

.... Stem cells were then derived from the inner cell mass of the blastocyst. In laboratory culture, these cell lines displayed signs of immunological compatibility with the patients' cells, Science authors reported. Oocyte donors and patients who donated non-reproductive cells were all unpaid volunteers. A...

SuperLigands - a database of ligand structures derived from the Protein Data Bank

.... Stem cells were then derived from the inner cell mass of the blastocyst. In laboratory culture, these cell lines displayed signs of immunological compatibility with the patients' cells, Science authors reported. Oocyte donors and patients who donated non-reproductive cells were all unpaid volunteers. A...

Python a 'hearty' eater

...n experiments, the python's ventricle increased in mass by 40 percent within 48 hours. Unlike a human hea...ng humans, a 10-30 percent increase in ventricular mass can occur following several weeks to months of intense aerobic training," said Hicks. In the snake,...

Research shows smoking adds a decade to reproductive age of IVF patients

...F and more than 7% were overweight i.e. had a body mass of 27kg/m2 or more. Older women had lower success rates no matter what was the cause of subfertility, with the live birth rate decreasing by 2% for each additional year of age. "In all subgroups smokers had a lower delivery rate per treatment cycle...

Unlike other mammals, newborn dolphins and orcas stay active 24/7 during first months of development

...om predators, help maintain body temperature until mass and blubber insulation develop, allow frequent respiration at the surface, and facilitate rapid growth of brain and body and related behavioral development. "Somehow these seafaring mammals have found a way to cope with sleep deprivation, facilitati...

NASA probe could reveal comet life, scientists claim

...ble pile, nor a conglomerate of ices, but a porous mass of organics and ice under the black asphalt crust." Comets are thought to have accumulated from a mixture of ices and organic interstellar dust at the time the solar system was formed some 4.6 billion years ago. "This material is quite porous, so i...

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