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Philippe Jean
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- 257 Posts
To observe, to learn, to understand!
@cwdolunt Indeed, I got excited and mind blowned.
@cwdolunt Hmm. Indeed. Moisture Electricity Generators (MEGs), also known as hydrovoltaic generators, still in early prototyping phase. My bad.
+ Moisture electricity generation: Mechanisms, structures, and applications (https://link.springer.com/article/10.1007/s12274-023-5465-9)
Moisture electricity generation: Mechanisms, structures, and applications - Nano Research
With the increasing concern of energy crisis and global warming, the whole globe is in an urgent need to develop clean energy that comes from renewable sources and does not harm the environment to fulfill the carbon neutralization and green earth commitments. Water is the most abundant substance on earth and has been historically used as the major energy carriers in watermill, water wheel, and hydroelectricity. Moisture electricity generation is another emerging technology that can convert low-grade energy in the widely-accessible moisture to electricity simply by the integration of moisture, electrodes, and deliberately-designed hygroscopic films. Recent research on moisture electricity generators (MEGs) led to the creation of a series of self-powered sensors and in some occasions they have replaced conventional batteries to power miniaturized devices. In this review, the basic mechanisms of MEGs are firstly clarified, and three categories of them, i.e., gradient structure, homogeneous structure, and heterogeneous structure depending on the structure of hygroscopic films, are then introduced. Furthermore, recent advances in the fabrication, characteristics, and performance of MEGs are summarized, and MEGs with continuous or transient output that could be applied in self-powered sensors and power sources are discussed. Finally, some remaining challenges and our perspectives on MEGs are highlighted.
Wild Killer Whales (Orcinus orca) used prey and other items to instigate interactions with humans. Offering items to humans could simultaneously include opportunities for killer whales to practice learned cultural behavior, explore, or play and in so doing learn about, manipulate, or develop relationships with us.
Astronomers have witnessed the birth of a #planetary system that could one day resemble the solar system. The discovery offers scientists a proxy to study how our home planetary system formed around the sun around 4.6 billion years ago.
The team was able to pinpoint the moment specks of material that will one day forge planets began to form around the infant star HOPS-315, located around 1,300 light-years away.
In the new study, researchers sampled a different section of #rock from the belt and estimated its age using the previous two dating techniques — measuring how one radioactive element decays into another over time. The result: The rocks were about 4.16 billion years old.
#Earth formed about 4.5 billion years ago from a collapsing cloud of dust and gas soon after the solar system existed.
In the early Bronze Age, a piece of bread was buried beneath the threshold of a newly built house in what is today central Turkey.
Now, more than 5,000 years later, archaeologists have unearthed it, and helped a local bakery to recreate the recipe -- with customers lining up to buy it.
https://uk.news.yahoo.com/ancient-bread-rises-again-turkey-053159365.html
De l’individualisme et de la preuve sociale | Of Individualism and The social proof
Dans une exploration nuancée de l’autonomie et de la liberté, cette analyse synthétise des perspectives issues du libertarianisme individualiste et du libéralisme social. Elle soutient que la véritable autonomie dépasse la simple isolation, en intégrant judicieusement l’expérience extérieure, tandis que la liberté se relie fondamentalement à l’acquisition non contrainte du savoir et à…
Scientists believed that plants lost most of their water through their pores to cool down. They could then simply close these pores in extreme heat.
The study, published in the scientific journal New Phytologist in December, shows that with rising temperatures, plants lose more water through their cuticle, the waxy layer on their leaves, than through their pores. The thinner the cuticle, the greater the water loss.
#phytology #botany #plants #drought #ClimateChange
https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.20346
