News tagged with ferric sulfate


Model Suggests Origins of Mars Gullies

Model Suggests Origins of Mars Gullies

Space & Earth / Earth Sciences

created Feb 09, 2009 | popularity 4.6 / 5 (8) | comments 4

University of Arkansas researchers have used chemistry and geology to create a model that may explain the mystery of how modern-day gullies form on the surface of Mars.





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Sandtrapped Rover Makes a Big Discovery

Sandtrapped Rover Makes a Big Discovery

Space & Earth / Space Exploration

created Dec 03, 2009 | popularity 4.8 / 5 (54) | comments 11

Homer's Iliad tells the story of Troy, a city besieged by the Greeks in the Trojan War. Today, a lone robot sits besieged in the sands of Troy while engineers and scientists plot its escape.


NASA to Begin Attempts to Free Sand-Trapped Mars Rover

NASA to Begin Attempts to Free Sand-Trapped Mars Rover

Space & Earth / Space Exploration

created Nov 12, 2009 | popularity 5 / 5 (6) | comments 0

(PhysOrg.com) -- NASA will begin transmitting commands to its Mars exploration rover Spirit on Monday as part of an escape plan to free the venerable robot from its Martian sand trap.


Additive copper-zinc interaction affects toxic response in soybean

Space & Earth / Environment

created Nov 10, 2009 | popularity 3 / 5 (2) | comments 0

Agricultural soils accumulate trace metals, particularly copper and zinc, as a result of their presence in wastes (sewage biosolids and manures) and fungicides that are applied over long periods of time. Regulations and guidelines ...


Scientists successfully reprogram blood cells

Biology / Cell & Microbiology

created Nov 09, 2009 | popularity 5 / 5 (6) | comments 0

Researchers have transplanted genetically modified hematopoietic stem cells into mice so that their developing red blood cells produce a critical lysosomal enzyme -preventing or reducing organ and central nervous system damage ...


Forget all about it: Traumatic memories can be erased

Medicine & Health / Research

created Nov 09, 2009 | popularity 5 / 5 (2) | comments 0

It is well known that fear memories are permanent. However, a recent paper in Science, evaluated by three Faculty Members for F1000, reports an extraordinary finding that supports the use of a drug to control recollections of tra ...


Magnetic nanoparticles to simultaneously diagnose, monitor and treat

Nanotechnology / Bio & Medicine

created Nov 06, 2009 | popularity not rated yet | comments 0

(PhysOrg.com) -- Whether it's magnetic nanoparticles (mNPs) giving an army of 'therapeutically armed' white blood cells direction to invade a deadly tumour's territory, or the use of mNPs to target specific nerve channels ...


Interactions with Aerosols Boost Warming Potential of Some Gases

Interactions with Aerosols Boost Warming Potential of Some Gases

Space & Earth / Earth Sciences

created Oct 29, 2009 | popularity 3.2 / 5 (5) | comments 0

(PhysOrg.com) -- For decades, climate scientists have worked to identify and measure key substances -- notably greenhouse gases and aerosol particles -- that affect Earth’s climate. And they’ve been aided ...


Previously Unknown Volcanic Eruption Helped Trigger Cold Decade

Previously Unknown Volcanic Eruption Helped Trigger Cold Decade

Space & Earth / Earth Sciences

created Oct 29, 2009 | popularity 4.3 / 5 (27) | comments 9

(PhysOrg.com) -- A team of chemists from the U.S. and France has found compelling evidence of a previously undocumented large volcanic eruption that occurred exactly 200 years ago, in 1809.


A new wrinkle in ancient ocean chemistry

Ancient ocean chemistry: Effects of biological oxygen production 100 million years before it accumulated in atmosphere

Space & Earth / Earth Sciences

created Oct 29, 2009 | popularity 4.8 / 5 (13) | comments 4

(PhysOrg.com) -- Scientists widely accept that around 2.4 billion years ago, the Earth's atmosphere underwent a dramatic change when oxygen levels rose sharply. Called the "Great Oxidation Event" (GOE), the ...


Researchers evaluate new bowel prep approaches

Medicine & Health / Diseases

created Oct 26, 2009 | popularity not rated yet | comments 0

While there is little doubt concerning the effectiveness of colonoscopy procedures to detect colon cancer, a new study presented at the American College of Gastroenterology's 74th Annual Scientific Meeting in San Diego places ...



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