Tag: "rotation" at biology news

Core Spins Faster Than Earth, Scientists Find

...arth and slightlyfaster, completing its once-a-day rotation about two-thirds ofa second faster than the entire Earth. Over the past 100 yearsthat extra speed has gained the core a quarter-turn on the planetas a whole, the scientists found. Such motion is remarkably fastfor geological movements -- some 100,000...

New Ultrafine Metal Powder Production Process

... of the particle by altering the laser energy, rotation speed and constituents of the reaction. He can make solid particles, porous particles, composite particles and even hollow nanotubes of an silver-nickel alloy. Unfortunately, he says, so far, the production rate of carbon nanotubes ha...

Crop Devastation To Be Discussed At National Head Blight Forum

... acres planted to susceptiblehost crops, and short rotation intervals between crops compoundthe problem. Scientists, including plant pathologists, agronomists,and plant breeders, attending this meeting hope to share researchresults and reinforce cooperative efforts to reduce the damagefrom this disease. Our f...

Corn Rootworm Changing Behavior, Posing New Threat To Crops

CHAMPAIGN, Ill. -- Crop rotation is failing as a defense against Westerncorn rootwo...ields instead of corn. The conclusion isthat crop rotation itself has selected for a rootworm strain that circumventscrop rotation. By laying their eggs in so...

National Network Provides Update On Devastating Corn Disease

... Using resistant hybrids in combination with crop rotation willdefinitely restrict yield losses." Although th...r one to two years Plant more, different crops in rotation with corn Monitor fields throughout growing season and harvest early if high amounts ofdisease deve...

Press Events At Spring Meeting

... the atmosphere, which have induced achange in the rotation rate of the Earth. This has resulted in a meaningfulincrease in the length of the day, as well as other impacts on motions of theEarth and on the oceans. (Meeting sessions on El Niño will take place all daytoday.) 6:00 PM. Wine and cheese r...

ESA Corporate Award Goes To Precious Woods Ltd.

...t ofapproximately 2,000 ha is cut each year with a rotation cycle of 25 years. Atany one time, 91 percent of the rainforest is in permanent or temporary reserve. Species distributions of 40 tree species are mapped with a GeographicalInformation System. The data is entered into a forest growth model used toe...

Vanderbilt Researcher: Human Brain Has Great Sense Of Timing

...erclockwise. Each pinwheel changed its directionof rotation at random time intervals. When a cluster of pinwheels changed theirdirections at the same time, they appeared to form a coherent shape that stoodout from the remaining pinwheels. "Viewers were able to distinguish the synchronized group of pinwheels ...

USGS study casts doubt on role of fire suppression in causing catastrophic shrubland wildfires

...prevent fire from spreading over large areas. Fire rotation intervals --the time it takes to burn the equivalent of the total shrublands within anygiven area -- has decreased in all but two counties. This, coupled with the factthat throughout this century September has remained the peak month of wildfires,imp...

UW team to examine effects of change in southern Africa on air pollution

... southern Africa and travels in a counterclockwise rotation thousands of miles to the east, north and finally ...ended particles, or aerosols, are pumped into that rotation from three primary sources: fossil-fuel burning and other industrial activities; agricultural fires,...

Cows and conservation: a round-up of speakers to discuss new ideas on ranching

...orts, he uses innovative watering systems, pasture rotation programs, and monitoring. Lee stresses the importance of ranchers working within and as part of their environment, rather than working against it. The Lee Family was lauded in 1997 for their management ideas by the National Cattleman's Beef Associa...

Study reveals structure of DNA packaging motor in virus

...s, noting that such a motor is used to produce the rotation of flagella of E. coli. "The flagella rotate, and when they rotate synchronously, the bacterium can swim quite rapidly towards a source of food, or carbohydrates, along a concentration gradient." The enzyme that manufactures ATP, called ATP synthas...

One answer for cleaner air, water: better agricultural practices

... implement either no-till farming or crop rotation practices to reduce erosion. No-till farming means a farmer doesn't plow his fields between growing seasons. The 5 billion tons of carbon lost to the atmosphere because of ...

Yale physicists first to create a 'squeezed state' of atoms, which could lead to improved sensitivity ofnavigation systems used on planes and ships

...matically improve the sensitivity of detectors for rotation and acceleration, and gradients in gravity. Accelerometers andgyroscopes (rotation detectors) are currently used in navigation systems for planes and ships, and gravity gradiometers have applications insubmarine navigation, and in locating ore deposi...

Texas tortoise and cattle can co-exist

...re had up to 23 steers/acre for a three-eight week rotation between October and May, when the tortoises typically hibernate. To compare the tortoise populations, Kazmaier and his colleagues evaluated a variety of factors, including abundance, size, growth rate and adult survival. They found no differences in...

Scientists map the complete genome of an important agricultural bacterium

...n-fixing bacteria before planting, along with crop rotation in which clover and other legumes are planted and plowed under in alternate years to improve the nitrogen content of the soil. Another alternative to fertilization is to breed peas, beans and other legumes that can produce large yields in nitrogen-p...

Battle to save last stronghold of the red squirrel

...forest. The harvesting of timber is carried out on rotation and the life expectancy of a plantation depends on the type of tree, the soil and the 'wind-throw hazard' - older trees are at risk of being blown down by strong winds which rip their shallow roots out of the peaty forest soil. Suggested plans to r...

Molecular motor packs DNA into viruses at greater than champagne pressures, researchers report

...een studied," said Douglas Smith. "We suspect that rotation of the rings may pull the double helical DNA through the portal similar to the way a rotating nut can pull on a bolt." They also hope to determine once and for all whether the virus injects its DNA into cells by mere passive diffusion, or whether, as...

Johns Hopkins researchers find more extensive bone defects caused by bladder exstrophy

...ward flare of the upper part of the hip bone and a rotation of the entire pelvic girdle from the bottom forward. Gearhart says the research broadens surgeons understanding of those bone defects so that more effective adjustments can be made in realigning and repositioning bones of the pelvis. Gearhart also sa...

NYU scientists advance toward nanorobots

... figure 1) molecule pairs and produced a half-turn rotation by converting them into JX2 (see figure 1) molecule pairs by removing the set strands with fuel strands and replacing them with new set strands that reconfigure the structure of the device (see figure 2). The data presented include both bulk measure...

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