Reversing life and death?A pig is dead, but the organs in its body are quietly "resurrected" | One week of technology

Welcome to the technology for a week, you will see: ① "resurrection" dead pig organs; ② mysterious small holes in the sea underwater; ③ All humans speak to babies in the same way; ④ suffering from sugar; ⑤ paper battery.

Resurrection

After the individual was declared death, the organs and cells in TA's body usually quickly fell to decline -however, the success of Yale University researchers prevented this process. They "resurrected" the organs in the dead pigs, allowing cell function to recover [1].

Pexels/pixabay

Their secret is a set of artificial system called "Organex". It can restart the blood in the dead pig's body and enter a specially prepared artificial solution in the blood to promote oxygen supply, anticoagulant, and inhibit cell death The role of the other. One hour after the experimental pig's heartbeat stopped, the researchers connected them to the ORGANEX system for 6 hours of irrigation. The results show that this treatment method has successfully restored the oxygen supply of the whole body, reduced tissue damage, and enables the cell metabolic function of important organs such as the heart and liver to be partially restored. Under a microscope, the treated organ organizations after death also seem similar to health organs.

This technology is far away from the real reversal of death, and researchers have not restored the brain function of dead pigs. However, it may be applied to human organ donors in the future, causing the transplanted organs to restore health after the death of the supply.

Small hole in the sea

Scientists have discovered a neatly arranged mysterious hole in the North Atlantic Ocean -now no one knows how these structures have formed [2].

The mysterious small hole structure found in the sea (the two laser red dots in the figure play the ruler, they are 10 cm apart) | Noaa Ocean Explration, voyage to the ridge 2022

On July 23, when the underwater drone was used to detect the North Atlantic ridge, the researchers found the small hole structure in the picture in the depression of about 2540 meters deep. More than a dozen small holes are arranged neatly, and a straight line is formed. Although it looks like an artificial product, it may be formed by a small stack of sediments on the entrance of the cave. Despite the attempt, the researchers failed to spy on the inside of the small hole.

Small Cave details | Noaa Ocean Explration, Voyage to the Ridge 2022

As early as 2004, scientists found similar structures in the same area. However, nearly 20 years have passed, and now people have not determined the cause of these small holes. This time, the detection equipment collected the sediment and environment DNA sample around the small hole. Subsequent analysis may reveal whether there is a mysterious marine life in the cave.

Baby language

When talking about the baby, people always unconsciously raise their sound and make a childish voice-a study published in "Nature-Human Behavior" confirms that this is a common phenomenon in the world. Regardless of modern urban residents or people who live and collect primitive life, all human beings are communicating with infants in the same way [3].

Research participants from South Sudan | University of Auckland

From the 21 different social groups of the six continents, the researchers collected a total of 1615 people speaking or singing, some of which were babies, and the other was adults. The researchers analyzed the acoustic characteristics of these audio through computers, and found that when facing infant communication, people with different languages ​​and cultural backgrounds always changed similar changes. For example, their words are always higher and more changing, and their singing will always be softer -but in different regions, there are differences in the degree of changes. The results of the study suggest that this human communication method of human beings may have a evolutionary foundation.

Suffer for sugar

If you endure some pain, you can get delicious food. Are you willing? The answer of the bear bee is: willing.

In order to eat more sugar, Bee Bee chose the feeder of the hot feet | pippa ager

In a recent study, scientists tried to explore the ability of Bombus Terrestris to feel damage and balance [4]. They gave a few choices for bear bees: if the concentration of sucrose water in the 2 feeders is different, the bear bees certainly choose the sweeter sugar water; if the two feeders are high concentrations of sugar water, but a feeder heated to 55 ° C to 55 ° C to 55 ° C , One without heating, they avoid high temperatures that make bees discomfort.

However, if the high concentration of sugar water is in the heated feeder, the non -heated feeder is equipped with low concentration sugar water, how will the bear bee choose? As a result, for the sweetest sugar water, the bear bee chose to endure the high temperature of the hot feet. This shows that bear bees can not only be weighed according to environmental information, but also perceive pain -although the latter needs more research, for insects, animal welfare may not be ignored.

Paper battery

Swiss researchers developed a disposable battery made by paper. It is more friendly to the environment than ordinary batteries, and you can activate it with just a few drops of water.

Power with a paper battery for alarm clock | Alexandre Poulin, Xavier Aeby Gustav Nysström

The cathode of this paper battery is printed from graphite ink, and the anode is made of zinc -containing ink. They are located on both sides of the paper. The paper contains salt. As long as a few drops of water are dripped, the formed salt solution will act as the electrolyte of the battery. After 20 seconds of wet paper, the battery can be activated, generating 1.2V voltage, and providing a maximum power supply per square centimeter. In the dissertation, the researchers demonstrated the alarm clock displayed with two paper battery units to power the alarm clock. At present, the output power of paper batteries is still very low, which is not enough to replace the standard battery on the market. However, it is still expected to be used for small electronic equipment that is low -energy consumption, such as some medical or environmental monitoring sensors.

references

[1] https://www.nature.com/articleS/d41586-022112-0

[2] https://oceanexplorer.noaa.gov/news/oer-updates/2022/mysterious-holes-safloor/mysterious-holes-saFloor.html

[3] https://www.nature.com/articleS/s41562-022-01410-x

[4] https://www.pnas.org/doi/full/10.1073/pnas.22058211119

[5] https://www.nature.com/articleS/S41598-022-15900-5

Author: Mai Mai, the window knocks on the rain

Edit: Window knocking rain

- END -