Monday, August 13, 2018
Wednesday, August 8, 2018
Years ago I had an environmental activist knock my door. His agenda was that his organization wanted tighter government controls on mercury emissions. I wasn't particularly interested at the time.
When it comes to poisons, concentration is everything. What could be deadly in one dose could also be harmless in trace amounts. Chemical structure is also important.
Tuesday, August 7, 2018
Monday, August 6, 2018
Sunday, August 5, 2018
Saturday, August 4, 2018
Tuesday, July 31, 2018
Saturday, July 28, 2018
Friday, July 20, 2018
Wednesday, July 18, 2018
Saturday, July 14, 2018
Wednesday, July 11, 2018
Tuesday, July 3, 2018
Sunday, July 1, 2018
But as the team conducted its research, it found high quantities of an isotope of helium, which comes almost exclusively from mantle, Loose said.
"When you find helium-3, it's like a fingerprint for volcanism. We found that it is relatively abundant in the seawater at the Pine Island shelf.
"The volcanic heat sources were found beneath the fastest moving and the fastest melting glacier in Antarctica, the Pine Island Glacier," Loose said. "It is losing mass the fastest."
He said the amount of ice sliding into the ocean is measured in gigatons. A gigaton equals 1 billion metric tons.
Saturday, June 30, 2018
Saturn moon Enceladus is first alien 'water world' with complex organics
Wednesday, June 27, 2018
Friday, May 18, 2018
This process, called hydrodynamic focussing, helped to align the nanofibres in the right direction as well as their self-organisation into a well-packed macroscopic thread. No glue or any other component is needed, the nanofibres assemble into a tight thread held together by supramolecular forces between the nanofibres, for example electrostatic and Van der Waals forces
Measurements showed a tensile stiffness of 86 gigapascals (GPa) for the material and a tensile strength of 1.57 GPa. "The bio-based nanocellulose fibres fabricated here are 8 times stiffer and have strengths higher than natural dragline spider silk fibres," says Söderberg. "If you are looking for a bio-based material, there is nothing quite like it. And it is also stronger than steel and any other metal or alloy as well as glass fibres and most other synthetic materials." The artificial cellulose fibres can be woven into a fabric to create materials for various applications. The researchers estimate that the production costs of the new material can compete with those of strong synthetic fabrics