Proteaceae spread by continental drift and transoceanic dispersal
...ught that these plants merely moved with the newly formed continents. But now a new study published in the Journal of Biogeography has shown that, while this is the case for some of these plants, others are far too recent to have lived at the time when the super-continent broke up. They must therefore have ...What we can learn from the biggest extinction in the history of Earth
...limestone fossil beds at the Great Bank of Guizhou formed in shallow ocean waters during the late Permian an...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...Preclinical study links gene to brain aneurysm formation
...ol groups. Mice with the NOS-3 knock out, however, formed intracranial aneurysms. ...Human knowledge is based upon directed connectivity between brain areas
...them and group them into categories that have been formed and shaped constantly through every day's experience. Categorization during visual perception is exceptionally fast. Within just a fraction of a second we effortlessly access object-based knowledge, in particular if sufficient sensory information is ...American Chemical Society's Weekly PressPac -- July 25, 2007
... had predicted that certain metabolites compounds formed in the bodies of people exposed to diesel exhaust should appear in the urine. One of those compounds is known by the acronym 1-NP and its metabolites are OHNAAPs and OHNPs. This is the first study to demonstrate that the 1-NP metabolites, OHNAAPs ...New aerogels could clean contaminated water, purify hydrogen for fuel cells
...ossess a consistent long-range structure, the gels formed by the Northwestern and Argonne researchers are highly disordered. As a result, conventional crystallographic techniques would not have effectively revealed the structure and behavior of the gels. The high-energy X-rays produced by the APS, however, ...Risk genes for multiple sclerosis uncovered
...ive Research Award from the National MS Society we formed a truly effective international consortium that was able to deliver the most exhaustive search for MS risk factors ever published. In an effort to see the work extended, we are now committed to making the entire data set available to MS researchers w...Nottingham biosciences million pound injection
... use gradually degrades, leaving behind only newly formed bone tissue. RegenTec has developed an extensive portfolio of patents and hopes that its injectable technology can reach clinics within three years. Its first product Injectabone will be used as a replacement for bone grafting, which can be beset...Study points to new way to predict death risk from torn aorta
.... Often, small openings at the bottom of the newly formed channel will allow the blood to flow out. But if t...sections because they involve a bulge in the aorta formed by a weakened area of blood vessel, but the layers of the vessel wall stay together. The patients...Researchers watch antibiotics, bacteria meet at atomic level
...ailed image of the elongation complex, a structure formed by RNA polymerase. RNA polymerase is the enzyme responsible for setting gene expression in motion, a process called transcription. Without a properly functioning RNA polymerase, a cell will die. RNA polymerase spends most of its working hours as th...News tips from the Journal of Neuroscience
...al requirements for the synapse formation at newly formed spines. The authors used two-photon laser-scanning...tructures. Only older (and wiser") spines (1519 h) formed full-fledged synapses. Recognizing Human Bodies, Upright and Inverted Cosimo Urgesi, Beatriz C...Fruit fly gene from 'out of nowhere' is discovered
Scientists thought that most new genes were formed from existing genes, but Cornell researchers have ...who are discovering that many of the most recently formed functional genes in any species also are expressed in male testes and appear related to spermatogene...Rise of dinosaurs in Late Triassic more gradual than once thought
... bones. None of the remains described in the paper formed a complete skeleton. Most came from a 20- by 10-foot site. The research team continues to excavate at three sites in the quarry and is sifting through the debris for smaller fossils of mammals, lizards and fish. "Randy and Sterling were clever to f...First genome-wide study of infectious disease opens new avenues for HIV treatment, vaccines
... from several European countries and Australia who formed a consortium, EuroCHAVI, to perform this study. The investigators identified three gene variants, two of which are linked to an infected persons ability to control HIV viral load and a third that is implicated in disease progression to AIDS. The rese...JCI table of contents: July 19, 2007
...h and spread by enhancing the envelopment of newly formed vessels with stabilizing pericytes, and rendering new vessels more resistant to anti-angiogenic therapies. In a surprising study appearing online on July 19 in advance of publication in the August print issue of the Journal of Clinical Investigation,...Coming soon -- Protein synthesis without amino acids?
...ory, the backbone of polypeptide chains is usually formed by the linking of an amino group with the acid group of individual amino acids. Like pearls on a string, the amino acids then line up. However, to get to such a structure, it isnt absolutely necessary to start from amino acids. Imines, compounds with...Microscopic jets, diamonds unlikely on Uranus, and amazing mosquito legs
...dds are exceedingly slim that a diamond could have formed under the conditions that exist in Uranus in the entire lifetime of the universe. - JR Miraculous Mosquito Legs C. W. WU, X. Q. King, and Diane Wu Physical Review E Mosquitoes walk on water better than water striders, cling to smooth ceilings ...A new plant-bacterial symbiotic mechanism promising
..., erosion or desertification. The plant cover thus formed can help achieve ecological restoration, by enriching the soils in nitrogen. However, the symbiotic processes studied predominantly concern the leguminous plants of temperate zones, very little those of the tropics. The team from the IRDs Laboratoir...New perspectives for the geosciences and climate research
... the ability to study specific nuclides, which are formed in the earths atmosphere by cosmic radiation, using high sensitivity, high resolution mass spectrometry. They permit conclusions to be drawn about geomorphological processes and concerning the course and development of oceanic and atmospheric current...New way to target and kill antibiotic-resistant bacteria found
...Redinbo and his colleagues have filed a patent and formed a small company to further develop the technology....