Tag: "introduction" at biology news

Freshwater Sponges May Pose Threat To Zebra Mussels

...initively say there is a correlation between the introduction of the zebra mussel and the increase in freshwater sponges, the timing suggests a relationship." Changes in water chemistry due to waste by zebra mussels or increases in water clarity, which could also be caused by zebra mussels, may have made the...

UC Berkeley, U.S.G.S. Scientists Discover Microscopic Invader Of San Francisco Bay, The First Known Marine Microbe Invader Of U.S. Waters

...eological Survey in Menlo Park, Calif., report the introduction of a single-celled amoeba-like organism, the foram...ound in large numbers at many sampling sites. The introduction of an exotic organism that spreads as rapidly as T. hadai is a matter of considerable concern, Sloan...

KU Researcher Eyes The Rain Forest Through The Trees

...o a young sapling," she said. "From this research, introduction of a species whose economic value is already recognized could be accomplished."...

Purdue Study Aims To Boost MRI Capabilities

... and other organs. Their work played a role in the introduction of new "fast-scan" MRI systems last year, including the echo planar and hybrid imaging systems. Though these new systems have improved image quality and speed, Bourland says there is room for more improvement. "The MRI scanners used in hospitals are ...

Wild Plant Genes Increase Food Production

...d fruit size has been increased in tomato lines by introduction of genes, identified through genetic mapping, from the tomato ancestor L. pimpinellifolium. In tomato and rice plant varieties, the researchers sampled a variety of wild species available in seed repositories and found a high proportion -- almost a ...

CTC Visualizations Help Ecologists See The Forest And The Trees

... TheoryCenter) present readers with an interactive introduction to and analysisof the workings of SORTIE, a computer model of forest dynamics based onindividual-trees. The paper, "Scaling From Trees to Forests - Analysis of a ComplexSimulation Model," can be viewed at http://www.sciencemag.org/feature/data/deut...

MIT Biologists Identify Aging Mechanism

...epresent a cause of aging,"wrote the authors in an introduction to the December 26th article in Cell. "Wethus sought to identify the molecular events embodied by the enlarged andfragmented nucleoli of old cells." First, the researchers tackled nucleolar enlargement. This, they discovered, wascaused by ERCs -- th...

Plasminogen-related Growth Factors

...de by Ermanno Gherardi E. Gherardi Chairman's introduction R. F. Doolittle, G. Spraggon and S. J. Everse Evolution of vertebrate fibrin formation and the process of its dissolution Discussion E. Gherardi, R. Gonzalez Manzano, A. Cottage, K. Hawker and S. Aparicio Evolution of plasminogen-related growth...

Good Ergonomics Is Good Economics

...-ms reduction in average call operating time after introduction of the ergonomically redesigned CRT display. Altho...le attention and debate that has resulted from the introduction of proposed workplace ergonomics regulations at both the federal and state (e.g., California) levels...

Candidate Regulator Of The Temporal Component Of Neurotransmitter Release Identified

...d robustness of this synapse preparation allows introduction of several electrophysiological recording electrodes, paired with injection of molecules directly into the presynaptic nerve terminal, where synaptic vesicles are located. Peptides that were inhibitory in vitro also inhibited synaptic ...

New Tuberculosis Vaccine Candidate Developed: Improved Delivery Of Antigens By Current Vaccine BCG (Bacille Calmette-Gurin)

...lls which in turn represents a route for increased introduction of antigens into MHC class I presentation pathways. Their data suggest that Hly secretion endows r-BCG with an improved capacity to stimulate CD8 T cells. Because CD8 T cells play a major role in protection against M.tuberculosis in...

Max Planck Scientists Report Molecular Details On The Interaction Of The Stress Hormone Corticotropin-Releasing Factor (CRF) And Its Receptor

...could be rendered ligand-selective by introduction of amino acids recognized to be crucial for the ligand-specificity of frog CRF-R1. The strategy and results of these experiments have very recently been published in the Proceedings of the National Academy of Sciences (Frank...

Biggest Acoustics Meeting Ever

...zona (3pBV3) will describe how ultrasound aids the introduction of geneticmaterial in living cells. The Comprehensive Nuclear-Test-Ban Treaty India's recent display of its nuclear weapons capability has heightened the importance of theComprehensive Nuclear-Test-Ban Treaty, the global moratorium on nuclear tes...

Fish Farmers Must Learn Zebra Mussel Prevention From A To Z

... operation that may be susceptible to zebra mussel introduction and put measures in place to avoid infestation," Swann says. "The fish farmers would also establish a scouting program for the pest and decide in advance what to do if they find any." For example, operators may decide to thoroughly filter surface wat...

Georgia Scientists Study Salt Marsh To Understand Global Warming

...ology based,according to the researchers. With the introduction of biogeochemists, oceanographers andmicrobiologists, the researchers were able to gather more quantitativedata that will help them better understand the factors controlling thecycling of these vital materials in salt marsh sediments. "Clearly, not e...

Plant Pathologists Collaborate Worldwide To Combat Sorghum Ergot

... "This cooperative effort reducesthe risk of ergot introduction and provides controls that can rapidly beimplemented as ergot is introduced," says Gary Odvody, plant pathologist atTexas A & M University and member of APS. "It's a time consuming process -- thatis why global cooperation with fungicidal control, hos...

Destructive Algae Overtaking Mediterranean Waters

...ations to "regulate the intentional or accidental introduction of non-indigenous species" and advised that European nations prohibit the aquarium trade or anyone else from selling or housing the invasive algae....

Deliberate Self Harm Is An Overlooked Tragedy In The Developing World

...cute self poisoning is currently poor and that the introduction of better management protocols would reduce mortality. Contact: Dr Michael Eddleston, Research Fellow, Centre for Tropical Medicine, Nuffield Department of Clinical Medicine, John Radcliffe Hospital, Oxford...

Ear Infection Complications On The Rise, University of Florida Researchers Report

...nt hasbeen almost nonexistent since the widespread introduction of antibiotics inthe 1940s. "It has been extremely...nfection complicationswere not uncommon before the introduction of antibiotics," Antonelli said. During the course of the study, the number of complications from ea...

Penicillin Gets A "Checkmate" Against Antibiotic-Resistant Bacteria

...s an antibiotic has diminished since itswidespread introduction in the 1940s, due to the ability of various bacteria todevelop resistance to the drug. Researchers at the University of Limerick inIreland have taken a major first step forward by developing a "uniquemodification to the penicillin structure," accord...

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