Tag: "particles" at biology news
Brain Protein "Rescues" Neurons From Atrophy
...ue involved first coating minute fluorescent latex particles
with the neurotrophins. The scientists then injected the neurotrophin-soaked beads into the ferrets' visual cortexes. The beads were taken up by the brain cells, spreading throughout each cell and revealing themselves by glowing in color under the mi...
Researchers Use Hydrated Lime To Reduce Toxic Selenium Emissions
...at can be retro-fitted to existingplants. The lime particles
capture selenium and sulfur dioxide.As the flue ga...s upward, an electrostatic precipitator removesthe particles
by electrical charging. The method, called dry sorbent injection, has been studied forseveral years ...
Photosystem I -- An Intermediate Step -- May Not Be Necessary For Plants
...dent reactions of photosynthesis. When photons -- particles
of light -- enter a plant cell, their energy is used to power two sequential light-dependent reactions. In Photosystem II (PSII), the light energy is used to split water, producing oxygen and electrons. In Photosystem I (PSI), these electrons are u...
Ocean Sediments Contain Record of Past Vegetation Fires in Africa
...ght there by winds." The charcoal is a mixture of particles
from both rainforest and savanna trees, as well as grasslands. Research on modern-day air mass routes for the eastern tropical Atlantic region indicates that the sediment in the core lies below several large-scale circulation pathways originating in...
Newly Discovered Bacteria Produce Magnetic Material
...se newly discovered bacteria produce tiny particles
of magnetic iron oxides, as shown under a scanning...e iron hydroxide to magnetic iron. These magnetite particles
serve as catalysts, easing the breakdown ofchlorocarbon compounds. The bacteria can also reduce othe...
Antarctic Science Season Gears Up With Searches for Meteorites, Neutrinos, and New Life Forms
... seeks to map the sources of the ghostly subatomic particles
called neutrinos -- whether they come from active ...onths of observations, AMANDA has spotted about 12 particles
that seem to be evidence of incoming neutrinos. This season, hot-water drillers will bore out holes...
Pinpoint Gene Control Holds Promise For Nervous System Studies
... replication-defective herpes ampliconviral vector particles
into their brains, mice are more activethan their normal counterparts, running around their cages moreand rearing up on their hind legs many times as often as theirnormal counterparts. The genetic alteration also leads to a greater than 10-foldi...
Scientists Urge Further Study Of Alarming Coral Reef Decline
...tiny animals that use their tentaclesto catch food particles
floating in the water. Certain types ofcorals produce calcium carbonate skeletons -- the coral reefs.Once attached to the chalky white skeleton, the tiny animals arecalled polyps. The corals provide critical habitats for a multitude ofother aqu...
Herpes-Based Gene Therapy Is Key To Promising Liver Tumor Vaccine
...s Dr. Federoff, a world leader in the useof herpes particles
in gene therapy. He and Dr. Fong hope to trythe therapy on human patients in the future....
Herpes-Based Gene Therapy Is Key To Promising Liver Tumor Vaccine
... Dr. Federoff, a world leader in the use of herpes particles
in gene therapy. He and Dr. Fong hope to try the therapy on human patients in the future. Memorial Sloan-Kettering is the world's oldest and largest private institution devoted to prevention, patient care, research and education in cancer. Throughou...
Study Focuses On How Plants Help Toxic Pollutants Travel Around The World
....Fiberglass filters will be used to ensure that no particles
get into the foam. Because the chemicals to be studied degrade so slowly and are believedto have such a negative impact on health, it is important that researchers havea better understanding of how chemicals are disbursed through the atmosphe...
Basin Traps Air Pollution In Mexico City: International Study Has Implications For U.S. Cities
...ants." The study may help explain how fine particles
form in the atmosphere.These particles
are potentially the most hazardous because they can lodge in thelungs, and the U.S. Environmental Pr...
UC Geologist "Flip-Flops" On Understanding Of Crinoid Life Style
...ould also make iteasy for the crinoid to pull food particles
and microscopic plankton out of the water, since that food tends to accumulateright at the sea's surface. Finally, the model explains whyUintacrinus fossils are always found in huge slabs with hundredsof individuals per colony. "We know they lived to...
New Ultrafine Metal Powder Production Process
...sible 1 to 100 nanometer range, the individual particles
are smaller than the smallest bacteria or abou...e solid particles, porous particles, composite particles
and even hollow nanotubes of an silver-nickel alloy. Unfortunately, he says, so far, the pro...
3-D Structure Of HIV Components May Pave The Way For New Anti-AIDS Drugs
...part, resultsin uninfectious viral particles. The particles
form, but their genetic materialis missing, so they can't spread to other cells," said Dr. Janna Wehrle of theNIGMS Division of Cell Biology and Biophysics. Pharmaceutical companies took an immediate interest in these previous results,said Dr. Summe...
Argonne Researchers Develops Simple, Inexpensive Method For Cleaning Industrial Waste Streams
...ne chemist and process developer Luis Nuez. These particles
(from Cortex Biochem, Inc., San Leandro, Calif.) a...o theplant. The extractants placed on the magnetic particles
can be tailored to theneed, for example, to remove radionuclides. Compared to ion exchange processe...
DNA Used To Create Self Assembling Conducting Wire: Breakthrough Will Lead To Next Leap In Emerging Nanoelectronics
...icalmolecule that makes up genes, to assemble tiny particles
of silver into aconductive wire 1,000 times thinne... because it has thepower to bind molecules or tiny particles
of matter to specific addressesspelled out in its chemical code. The linear DNA molecule res...
Sex Differences In Heart Disease May Be Due To Enzyme That Breaks Down Fat
...he adds.Evidence is mounting that small, dense LDL particles
are the "baddest of thebad" because they are most ... says. Having apredominance of small, compact LDL particles
causes about a three-fold increasein a person's risk of heart disease compared to people whose LDL p...
EPA Should Redirect Some Research on Toxic Airborne Particles
...t the most serious public health risksposed by the particles
are addressed, says a new report by a committee of...A should devote more funds tostudying the types of particles
most likely to be harmful to human health, theways the particles
cause damage, and the levels of exp...
Shuttle Mission's "Neurolab" To Study Nervous System
...brain when they are "triggered" by small,rock-like particles
of calcium carbonate, referred to as statoliths in snails and otolithsin fish (and in humans). In humans, this system is a component of the inner ear. "Gravity is always present on earth, so it's been hard to explore itsrole in development ...
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