Anonymous ID: c06750 Sept. 23, 2021, 8:21 p.m. No.14647873   🗄️.is 🔗kun   >>7883

New device blends secrets of beetles and cacti to pull water from fog

 

https://massivesci.com/articles/water-biomimicry-cactus-beetle-desert/

 

Yahui adapted the lessons from the cactus and the beetle. Everything about these organisms’ natural water collection processes happens on the surface, so Yahui’s team created their device on a piece of aluminum foil. To encourage condensation, they pressed bumps into the foil, which is coated with a pattern of alternating hydrophilic and hydrophobic spots, just like on the beetle’s back. Fog collection devices rely on the movement of fog across the surface, but air comes to a near standstill when it gets close enough to the surface to condense. (This slowdown at surfaces is the same reason why blowing dust off of your glasses doesn’t work for some of the smaller, more stubborn specks.) However, at the top of each bump on the foil, the air will move faster, so it is constantly refreshed with more fog.

 

Once the water is condensed it must be moved out of the way, so a pattern of holes is cut into the foil to allow the water to flow out underneath. The bottom of the foil is treated with a more hydrophilic coating than on its top, so just like on the cactus spines, water is forced toward the bottom. In this case, the gradient in hydrophobicity causes each droplet to be sucked away through the hole.

 

For a landlocked or arid regions, desalination of oceanwater is not an option and other methods like wastewater treatment can be inaccessible. Extracting water from the air, however, requires no electricity and mostly likely little maintenance. In the remote areas of Peru, mesh nets are suspended above misty hillsides to collect water, just like a spider’s web collects dew in the morning. Cacti and desert beetles provide examples of specialized adaptations. But nature is teeming with even more, like unidirectional water flow on the mouths of pitcher plants and the superhydrophobic surface of the lotus leaf.

 

#WatchTheWater

Anonymous ID: c06750 Sept. 23, 2021, 8:41 p.m. No.14647981   🗄️.is 🔗kun

North Korea rejects South Korea’s call for end-of-war declaration

 

https://www.irishexaminer.com/world/arid-40705256.html

 

Mr Ri said in a statement carried by state media: “It should be clearly understood that the declaration of the termination of the war is of no help at all to stabilizing the situation of the Korean Peninsula at the moment but can rather be misused as a smokescreen covering up the U.S. hostile policy.”

 

#EnjoyTheShow

Anonymous ID: c06750 Sept. 23, 2021, 8:56 p.m. No.14648081   🗄️.is 🔗kun

Covid-19: End to lockdown in sight for NSW as it nears 80% double dosed

 

https://www.rnz.co.nz/news/world/452225/covid-19-end-to-lockdown-in-sight-for-nsw-as-it-nears-80-percent-double-dosed

 

NSW to come out of lockdown

October 11 is firming as the date NSW will come out of lockdown, although Premier Gladys Berejiklian said she was reluctant to use the phrase "freedom day".

 

Across NSW, 84.1 percent of adults have now had a first dose of Covid-19 vaccine and 56.6 percent have had both doses.

 

A third of 12-15 year olds in the state have received one dose.

 

Berejiklian said communities in Western and south-western Sydney had done an "unbelievable job" in getting vaccinated.

 

"We saw vaccination rates go through the roof and in every local government area (LGA) of concern we have had at least 80 percent of first doses," she said.

 

Some communities had more than 90 percent and in Camden 95 percent of the eligible population had received their first dose.

 

***Out of lockdown 10-11