Swimming Proficiency Of Marine Mammals Ranks Them Among The World's Elite Animal Athletes
... some 60 million years ago, they had to adapt to a medium 800 timesdenser and 60 times more viscous than air. The spectacular success of theirdescendants illustrates the remarkable power of natural selection. According to a new study comparing the athletic abilities of different types ofanimals, modern mar...UB Stroke Researchers Develop New Technique To Measure Blood Rate-of-flow, Treat Brain Malformations
...wo approaches, both involving injecting a contrast medium into the AVM through a tiny catheter threaded thro...in until it reaches the damaged area. The contrast medium is tracked via digital X-ray imaging. One approach involves injecting a soluble contrast medium, w...Microbiologist Develops Method For Dyeing Fabrics With Gold
...ill color about 380 miles of spunviscose yarn at a medium level of intensity. With some of the other elements,the cost is less than one penny per liter of the solution." Colorfastness is another of the benefits of the metal dyes. "Common organic dyes bleach out through the sun and chemicals...History Of The Rainforest Told In Song
...orests is being decipheredfrom an utterly original medium - the music of the birds which have inhabited itfo...seful in documenting vegetation changes onshort to medium time scales, or in documenting the impact of change on birdpopulations." Birdsong is adding to infor......ng infection. Sperm will swim in a culture medium for a day or more. But even in thesamples with low concentrations of bacteria, only 1 per cent of the sperm werestill moving after 18 hours. At the highest dose, they all stopped moving after3 hours. Molnar says that the bacteria may inhibit...NASA Using Space Incubator To Understand Breast Cancer
...ctor turns, the cells continually fall through the medium yet never hit bottom. Under these quiet conditions, the cells "self assemble" to form clusters that sometimes grow and differentiate much as they would in the body. Eventually, on Earth, the clusters become too large to fall slowly and research has t...Computer Simulation To Predict Forest Fires
...found that the frequency distribution of small and medium fires can be used to assess the risk of larger fir...revent the largest fires is to allow the small and medium fires to burn. The scientists found that actual forest fires have fractal distributions over many ...Bioreactor Grows Cells That Produce Possible Anti-Cancer Protein
...vice that grows human tumor cells in an artificial medium in order to produce a protein for possible cancer treatment. The device, called a fibrous-bed bioreactor (FBB), is capable of growing cells for a variety of applications including fermentation, animal cell culture, tissue engineering, a...Duke Studies Show That Environmental Effects Of Dams Extend To Insect Life
...hectare on the smallest islands,compared to 2.3 on medium sized islands and only 0.72 on the largest. The reason seems to be linked to the presence or absence of a major leafcutter ant predator: armadillos. "They're totally absent from the smallislands," she said. "Each armadillo requires three or f...Scientists Identify Key Protein Involved In Progressive Blindness
...," Swaroopsaid. "It also may provide a connecting medium for communication betweendifferent components of the retina." In future research, U-M scientists will try to determine exactly where the USH2Aprotein is located in the retina and precisely what its function is. Oncescientists understand what the pro...Ionotropic Glutamate Receptors Share Tetrameric Structure With The Voltage GatedPotassium Channel
...flow when two glutamate were bound, a medium sized current when three molecules were bound and was fully open with four molecules bound. The easiest interpretation of that result is that the receptor has a tetrameric structure, similar to most voltage dependent channel...Raymond Receives $113,000 NIH Grant To Support Cell Cycle Regulation Research
...baker's yeast, has proven to be the most effective medium for performing these experiments with mutant cells. Her NIH grant will support work that specifically addresses, through genetic and molecular approaches, the role that CDC-14, a cell division cycle gene required for the completion of telophase, pl...University Of Cincinnati Biologists Find Evidence For Unusual DNA Repair InArchaea
...nt. The mutant requires a supplement in its growth medium toreplace a particular nutrient a normal cell could produce on its own. For example, onemutant might need the amino acid histidine while another requires tryptophan in its diet.Finding these mutants was a chore, to say the least. "The amino acid mut......ra-violet range, whichhumans can't see, up through medium wavelengths to yellow-green. Humans see ina spectrum that extends from violet to red. Mice lack the photopigment or protein that allows them to see long-waveor red light. To expand the spectral range of mouse vision, the researchersintrodu...Composting Livestock Waste Provides Benefits
...ting manure solids offers these advantages for the medium to large livestock producer: The total volume is reduced by as much as 80 percent, which results in less hauling and spreading. "Composting offers a more efficient use of labor, which is a considerable cost savings," Hawkins says. The composting...Echocardiography Is Effective In Measuring Microvascular Damage From Heart Attacks
... contrast echocardiography (CE) -- using acontrast medium with ultrasound waves to study heart function -- could detectblockage of the small vessels of the heart leading to a reduction in tissueblood flow to 60 percent of normal functioning. Magnetic resonance imaging(MRI) detected reduced tissue blood flo......s not attached to a virus or another"Trojan horse" medium to transport the DNA inside the cell. The "naked" DNA wasadministered twice, four weeks apart. A total dose of 4,000 micrograms of the"naked" DNA of what is known as the 165-amino-acid isoform of human vascularendothelial growth factor (phVEGF165) ...Cancer Cells Self-Destruct When "Sweet Tooth" Is Thwarted
...n we bathed cells with high c-Myc levels in a cell medium with noglucose, they destroyed themselves by triggering a cell suicide process called apoptosis,"says Dang. "Cells we hadn't altered stopped moving through the cellular life cycle, staying in thefirst two stages of cell development, and appeared fin...Penn State Researchers Study Used Mushroom Compost
...tate researchers will study mushroomsubstrate, the medium in which commercial mushrooms are grown, with an e... than 500,000 tons of compost each year.The growth medium is composed of a mixture of straw, hay, and horse and othermanures, and is composted before use. ...No Such Luck: Nitrogen From Air Pollution Unlikely to Moderate Global Warming
...n and showed no net storage of carbon. Further, at medium and high rates of nitrogen addition, the native prairie species went extinct, the diversity of vegetation dropped sharply, and the ability of the prairie grasslands to store carbon disappeared. "From a global change perspective, this is the f...