The trash can steal pizza, and no one can stop these parrots from becoming fine!| One week technology

Welcome to technology for a week. This week you will see: ① The trash can of parrots and humans; ② crow's mouth dumplings; ③ painless tattoo; ④ the secret of survival of water bears; ⑤ new therapy for immune diseases.

Dispute between trash bins

In Australia, the wild cods are fighting wisdom with humans -for the garbage in the trash bin. This week, a study published in "Contemporary Biology" shows the details behind this phenomenon [1].

Video: Proficiently open the brick to open the trash can to open the trash bin | | Barbara Klump/Current Biology

The coden parrot has learned to open the trash bin on the roadside, and it is very fast to the pizza and bread inside. This is not a good thing -they are picking and picking up the garbage; and human food may also damage their health. Nearby residents moved out of some countermeasures. They pressed the bricks, metals, or bottle filled with water on the lid of the trash can, but the parrot quickly learned how to deal with these obstacles. What is even more terrible is that they can also learn from each other. As long as there is a method of studying the Birds of the Bird, other parrots can learn from the observation.

Someone put the door pads on the trash can, and some people stuck the lid with shoes | Barbara Klump

As a result, the fight between human birds began to upgrade. Some people fix the heavy objects on the lid, some people tie the lid with elastic rope, some people are filled with nails to prevent them from landing, and some people try to scare the parrot with plastic snake ... It works for a few days, and some are completely useless. This competition is not so easy to end, who is the last winner, and you have to look at it.

Victory of the cracker: eat pizza today, hee hee | DR John Martin / Twitter

Crow's mouth

The crow's mouth is also unexpected. Researchers at the University of Tsukuba use it as a design inspiration to create a good new type of mule [2].

Design is inspired by the crow's tunnel | TAKAHITO MURAKAMI et al.

This "crow's mouth" borrowed from the shape of the bird's beak of Xin Kaay and was printed with 3D. Tests show that this kind of tadar can easily pinch various challenging objects, such as slippery small tomatoes, raw egg yolk and fragile tofu. This new type of sister -in -law is very good at pinching smooth spherical objects. It uses it to transfer small glass balls faster than bare hands or traditional mules. However, when facing small objects, it is not better than traditional design performance.

Demonstration of objects | DIGITAL NATURE Group

Painless tattoo

Researchers at Georgia Institute of Technology have developed a new method of painless tattoos. As long as a microneedic patch is pressed on the skin, he can easily get a clear and long -lasting tattoo pattern [3].

With a microneedle, tattoo can be as simple as a plaster | Georgia Tech

On this patch, each micro -needle is made of tattoo ink particles and water -soluble polymer materials. Press the patch on the skin, pierce the microneedle into the skin. As the polymer dissolves, the tattoo ink can be deposited in the skin, leaving a pre -designed small -sized dot matrix pattern. This tattoo has no pain, no bleeding, and less risk of infection, and the operation is faster than traditional tattoos. And because the microneedle will dissolve in the skin, there will be no sharp dangerous waste after the tattoo operation.

The effect of tattoo patterns tested on rats | Song li et al.

Tests on rats show that this tattoo pattern can be kept clear for at least one year. In addition to decoration, this tattoo is also expected to be used as a mark in the medical field.

Dehydration secret

Some species of water bears are known for their extremely tenacious vitality. They can dehydrate and enter a dormant state, carry a series of rigorous environments such as drying, high temperature, radiation, and then recover again. Ramazzottius Varieornatus | Daiki D. Horikawa

What is the principle behind this survival stunts? Recently, researchers have discovered some new clues. New studies have shown that the unique cytoprotein (CAHS protein) of a water bears (CAHS protein) plays a key protection role in their dehydration. [4] When the cells are water loss, this protein can spontaneously form a cell -like silk -like mesh structure, and causes cytoplasm to form gel. This can provide extra support for cells to prevent the cell structure from collapsed in dehydration. When hydration and cell recovery, these structures will soon disappear, allowing cells to restore the original state.

However, this cannot fully explain the super resistance of water -bears dehydration. Researchers will continue to explore other ingredients in this magical creature in the future.

New therapy for immune diseases

There was a new breakthrough in autoimmune treatment: Through Car-T cell therapy, German researchers successfully treated 5 severe cure lupus erythematosus [5]. These conventional treatment patients are now completely alleviated and no longer need to use drugs.

T cells under electronic microscope. The transformed T cells can be used to treat autoimmune diseases. | Niaid/nih

Systemic lupus erythematosus is a disease that produces abnormal antibodies to attack its own disease. It affects joints and skin, and can also cause a variety of organs to damage and endanger life. Here, the researchers have transformed the patient's own T cells, allowing them to remove B cells that produce abnormal antibodies, thereby terminating the immune system's attack on themselves. After receiving treatment, the symptoms of five patients were relieved, the internal organs were reduced, and their own antibodies related to disease disappeared from their bodies. The side effects of the treatment are mild, and there is no significantly increased risk of infection.

At present, the researchers have only observed the patient for a maximum of 17 months, and the long -term effects of this therapy still need to be further verified.

references

[1] https://www.cell.com/current-biology/FullText/s0960-9822 (2)01285-4-4

[2] https://www.researchgate.net/publication/362300029_kuchibashi_3d-printed_tweezers_BIOINSPIRED_BY_THE_CALEDONIAN_BEAK

[3] https://www.cell.com/iscience/fulltext/s2589-0042 (22) 01286-x

[4] https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.3001780

[5] https://nature.com/articleS/S41591-022-02017-5

Author: Cat swallow, the window knocks on the rain

Edit: Window knocking rain

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