Tag: "bottom" at biology news

Alcohol consumption can damage hearing

... of the hearing performance can be possible." The bottom line, she added, is that "even an amount of alcohol consumption which is normally accepted by society can have a damaging effect on the auditory system." Smith said that future studies may examine the relationship between chronic alcohol consumption ...

Household activities release a cloud of dust, increasing exposure to particulate pollution

..." she says. Dancing on a wooden floor was near the bottom of the list. Not only did Ferro design the study, but she also performed the activities. What kind of dance did she do? "Probably best described as solo salsa," she says. "Luckily, I did not take any videotape." Vacuuming was also a large source of p...

Veterinarians, wildlife experts applaud China's ban of wild bird trade

...l balances, including reducing crop pests. "The bottom line is that whenever you bring wild and domestic birds, or other species, from wide ranging locations together, then keep them in cramped, stressful conditions, you will always run the risk of disease outbreaks," said Dr. William Karesh, Director of...

1,136 scientists call for protection of deep-sea corals

... being destroyed by commercial fishing, especially bottom trawling. Trawls are huge nets armed with steel we...allows. Deep-sea researchers have also found that bottom trawling is rapidly eliminating coral and sponge ecosystems from Tasmania to Alaska, from Florida to...

New technologies reveal mysteries of marine megafauna

...our porpoises can become entangled in nets set for bottom dwelling fish like cod and flounder. Unable to reach the surface to breathe, they suffocate and die. Fisheries managers have implemented a series of conservation measures in an effort to reduce the number of porpoise deaths, including banning bottom...

Bighorn sheep threatened by climate change

...ge. It doesn't take too much to push them off. The bottom line is that more than one-third of the populations that were once known are now gone," said Epps. From 1901 to 1987, the mean annual temperature in the deserts of the southwestern United States increased by about 1.8 degrees Fahrenheit, which is con...

Earliest evidence of humans affecting aquatic ecology in Canada, United States

...istory, the team collected sediment cores from the bottom of the pond and analyzed the fossil "markers" (tiny algal cells) preserved in each layer. As sediments slowly accumulate over time, they represent an archive of past environmental change. Diatom algae, characterized by glass walls, provide an excelle...

Waste motor oil management may pose threat to health and the environment

...average 4,500 miles to more than 9,000 miles. "The bottom line is that motor oil quality has continually improved, but the oil filters have stayed basically the same for the last 30 years," Boughton says. Most filters are made of a paper element that gets clogged after 5,000 miles, so the oil needs to be ch...

AGU journal highlights - 6 January 2004

...ix the water further from the surface and forceice bottom melting during the winter when new ice is usuallyforming. Title: Effects of keels on ice bottom turbulence exchange Authors: Eric D. Skyllingstad, Clayton A. Paulson, W. Scott Pegau, OregonState ...

Endurance of plants under quartz rocks possible model for life on early Earth, Mars

...ad rings of plant life around those parts of their bottom edges where sunlight could penetrate through the s... "That's like photosythesizing by moonlight on the bottom of the thickest rocks." "The growth of hypolithic (beneath rocks) algae under diaphanous quartz pe...

Bacteria discoveries could resemble Mars, other planets

...e. "We think there could be bacteria living at the bottom of the hole, some 3,000 meters below the surface. If microorganisms can live in these kinds of conditions on Earth, it is conceivable they could exist below the surface on Mars as well." The study was funded by NASA, the Jet Propulsion Laboratory, C...

New way to lock DNA-slicing enzyme onto chromosomes could lead to novel anti-cancer drugs

...cule. St. Jude investigators modified the top and bottom ends of the C-shaped enzyme so that the tips of the open ends of the enzyme were pulled together and locked Top 1 into place around the DNA. The Top 1 then acted as a roadblock to the enzyme machinery behind it. "We found that Top 1 didn't even have...

NASA learning to monitor coral reef health from the sky

...aking the top-down approach, we are going from the bottom up to the airplane, and later to satellite-sensing of coral health," Guild said. "Ultimately, we plan to fly 'hyperspectral' instruments,containing many detectors that collect information in the visible light range," Guild explained. These ins...

Scientists decipher genome of bacterium that remediates uranium contamination, generates electricity

...electronic devices in remote locations such as the bottom of the ocean, as well as the conversion of sewage and renewable biomass to electricity and the development of improved microbial fuel cells. One of the surprises from the G. sulfurreducens genome was the high percentage of its genes devoted to sensin...

Fishing gear fallout

...y of various fishing gears, the authors found that bottom gears--such as dredges and trawls--as well as midw...ggests that because of their severe impact, mobile bottom gears and midwater gillnets should not be used at all, or only minimally in ecologically sensitive a...

Chemical gradient steers nerve growth in spinal cord

...m back to front (dorsal-ventral) and toward top to bottom (anterior-posterior). At that point, Wnt proteins take over, drawing the axons up toward the brain. Without the Wnt/Frizzled signaling, the axons wander aimlessly, "knotting and stalling," noted the authors. These findings will also allow scientists...

USGS December science picks!

...of individuals, encrusting and smothering hard sea bottom and organisms attached to it. According to researchers, the Georges Bank infestation may exceed documented occurrences on hard bottoms and structures in shallow coastal waters, where this animal can reach very high densities. The creatures exude a no...

Marine scientists discover nutrient pollution boosts fungi, bacteria killing Caribbean reefs

...ommon species that covered 60 to 70 percent of the bottom were just wiped out, becoming functionally extinct and changing possibly forever the structure of those marine communities. It was analogous to losing all the pine trees in the Carolinas down into Georgia." Since no one had gone into the field to te...

Golfing toward a greener environment

... measured the concentration that seeped out of the bottom gravel layer. The main goal of the experiments, says Park, was to determine if the rubber layers would filter out chemical compounds carried in the water without affecting the health or quality of the grass. In all experiments, the researchers found...

Scientists believe ancient arachnids may have spun silk like modern spiders

...ds died in or near an ancient lake and sank to the bottom where they were eventually buried, he said. Still, William Ausich, a professor and former chair of geological sciences at Ohio State, was surprised that the site yielded complete trigonotarbid remains. Insects and arachnids are fairly delicate, Ausic...

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