Nano springs eternal; Protozoan 'engine' posts nano records
... the stalk. At rest, the stalk is elongated like a stretched telephone cord. When it contracts, the spasmoneme winds back in a flash, forming a tight coil. To find out how fast and how hard Vorticella recoils, France and colleagues used modern microscopes and tools to measure the force and speed of the spring....Researchers learn how blood vessel cells cope with their pressure-packed job
UCSD researchers stretched cells in a workout chamber the size of a credit ca...ineering at UCSD. When Chien and his collaborators stretched the cells back and forth along one axis in the miniature workout chambers, the cells formed stress f......ns has a total surface area of about five feet, if stretched out. The cortex is separated into large areas of specialized function, such as the motor and visual cortex, but is also organized on a finer scale into vertical "functional columns" within the .05-inch thickness of the cortex. Research in the 1960s s...Satellites spot mighty Mississippi - in the Atlantic
...he water discharge, appearing as a dark plume that stretched from the Mississippi Delta, around Florida and up to the Georgia coast. MODIS detects the color of the ocean due to changes in the amount of tiny ocean plants floating on the ocean's surface known as phytoplankton, or algae and other decaying materia...Chemical 'band-aid' prevents heart failure in mice with muscular dystrophy
...end of a single cardiac myocyte. As the myocyte is stretched between the carbon fibers, a transmitter on one fi...tiffer and resistant to stretching. When they were stretched repeatedly, they started shaking and eventually contracted and died." "It's a physiologically releva...Now scientists think you'd be 'roasted' in a black hole
...re strongly than your head, and your body would be stretched out like spaghetti. For a small black hole with the mass of several suns, this should still be true. But for a supermassive black hole weighing millions or billions of suns, explains Professor Hamilton, the tidal forces which cause spaghettification ...New findings in taste and smell research
...navigational mechanism used by sperm. Fluid motion stretched the tryptophan plume around eggs, vastly increasing broadcast distances. Moreover, stretching of the plume caused shallow gradients to dominate plume structure, in contrast to the sharp gradients found in diffusion. Examining the kinetics of sperm be...Survivors to revisit the polio scare
..., the family could bypass the line of autos, which stretched for blocks. Patients and beds sometimes had to wait outside until space opened up on the wards. Several staff members were stricken with polio, and two patients had babies while at Children's, one needing help with breathing throughout the birth. Sa...Basis for DNA ejection from single phage particles
...fferent stages of the ejection process after being stretched by applied hydrodynamic flow. The study demonstrated that DNA release is not an all-or-none process, but rather is unexpectedly complex. DNA release occurred at a very high rate, reaching 75,000 base pairs of DNA/sec, but in a stepwise fashion. Paus...Tree-ring data reveals multiyear droughts unlike any in recent memory
...cause they persisted for years, including one that stretched for 12 years. "Imagine what a drought lasting that long would do to the resources and economy of the region today," says Dave Peterson of the U.S. Agriculture Department's Forest Service Pacific Northwest Research Station and the University of Washi...Weill Cornell team develops fast-acting anthrax vaccine
...001 attacks requires that troops receive six doses stretched over 18 months. Populations threatened by the sudden dispersal of deadly anthrax spores won't have the luxury of that much time. So Cornell researchers turned their attention to faster-acting passive vaccines. "We looked especially at the use of gene...Needling chromosomes yields insights into cell division
...e smallest misstep could result in broken needles, stretched chromatids or ripped-apart cells. However, he said, Paliulis mastered the delicate technique and performed numerous experiments pulling the chromatids apart at different points along their length and at different times during cell division. The exper...Scientists find impaired chromatin structure formation & imprinted gene involvement in Rett Syndrome
...responsible. Imagine DNA like a slinky that can be stretched out or compacted. Rather than wire, a basic struct..., and therefore that section of the slinky must be stretched out. Tightly compacted sections are silent because the genes cannot be accessed. In normal mice, the...Say goodbye to Rudolph and other reindeer if global warming continues
...Interglacial Stage, another period of warming that stretched from 130,000 to about l16,000 years ago. The range of reindeer, as they are called in the Old World, and caribou, the name used for the same species in the New World, has varied over time. Today they extend from Scandinavia across northern Russia i...Delays in cutting greenhouse gasses could harm environment
...hooting scenarios, some ecosystems would likely be stretched beyond their ability to adapt to rising temperatures. For example, a controlled increase in carbon dioxide to 500 parts per million would likely keep the average rise in global temperature to 1 degree Celsius, but a scenario that overshoots that targ...Stretching the supply of flu vaccine: Solution offered in new SLU research in New England Journal
...y for younger healthy persons conceivably could be stretched 2.5 times using the scheme published in this study. People in this age group for whom the CDC recommends vaccinations (even with this year's shortages) include health care workers and all people who have contact with babies under 6 months. The public......nformation, the group will build a device in which stretched DNA molecules would be made to pass between sharp electrodes spaced 2 to 5 nanometers apart. It will then test the device to see if it is possible to distinguish between the four types of nucleotides based on differences in a phenomenon called electr...