Science

Why are the fish in the deep sea not crushed to death by the pressure of water?
We all know that with the depth of the water, the pressure will get bigger and bigger. The more people dive into the water, the greater the water pressure will be. In the general pressure of the atmosphere, nitrogen is not dissolved in the blood, when the pressure reaches 3 atmospheres nitrogen can be dissolved in the blood, if the stronger the pressure, the solubility will gradually rise a lot. 100 meters underwater position, the blood may be dissolved in a large amount of nitrogen, and the body needs a lack of oxygen. Eventually, nitrogen involuntarily runs out from the blood and is blocked in the blood vessels, and eventually may let the blood vessels rupture, if the rupture occurs in the body's important blood vessels, people will die directly.
By Roseto4 years ago in Earth
Zhu Rong discovers that water also exists on Mars recently | Global scientific news
? COVID-19 epidemic? China's cancellation of zero clearance policy may trigger a wave of O'Micron infection. China's dynamic zeroing policy, designed to cut off the chain of transmission and quickly fight the epidemic, has been used to deal with the more contagious mutant novel coronavirus since August 2021. Recently, researchers from Fudan University predicted COVID-19 's disease burden after China abolished the dynamic zero clearance policy. The results show that if the current dynamic zero clearance policy is abolished, it may lead to a large number of O'Micron infection. The study is published in Nature Medicine.
By jsyeem shekels4 years ago in Earth
New O'Micron variants BA.4 and BA.5 are spreading rapidly in South Africa, faster than BA.2. | Global science news
? Novel coronavirus? New O'Micron mutants BA.4 and BA.5 are spreading rapidly in South Africa. New Omicron variants BA.4 and BA.5, first detected by the South African Genome Monitoring Network in mid-December 2021 and January 2022, are spreading rapidly in South Africa, according to Nature's website. According to Science News, from 17 April to 7 May, the number of new cases per day in South Africa increased rapidly from about 1000 to 10,000. At present, these two seed variants have been found in more than a dozen countries (mainly in Europe). BA.4 and BA.5 spread slightly faster than Omicron's BA.2 sublineage, while BA.2 was more contagious than the first Omicron variant BA.1.
By jsyeem shekels4 years ago in Earth
This may be the ugliest robot you've ever seen, but it can deform at will like venom, be cut off and be reborn.
There is an alien life form that can be parasitic on humans and gives the host a powerful ability to deform and stretch at will like a fluid and enter a narrow space to carry out acts of destruction. It is venom.
By gaisndm Hawkshaw4 years ago in Earth
Discovery of the largest comet so far, about the size of Tianjin | Global scientific news
? Astronomy? The largest known long-period comet On January 8 this year, a team of researchers at the University of California, Los Angeles (UCLA) used the Hubble Space Telescope to identify comet Cmax 2014 UN??? Five pictures were taken. Combined with radio data from the Atacama large millimeter / submillimeter wave array (ALMA), the team confirmed that the effective diameter of the comet's nucleus is 119 ±15km, making it the largest known long-period comet. The results are published in the Astrophysical Journal KuaiBao. Tianjin has an area of 11966 square kilometers and an equivalent diameter of about 120km. The diameter of the comet is about the same as that of Tianjin.
By gaisndm Hawkshaw4 years ago in Earth
The biggest confusion for cat owners: why do cats have to wake people up in the early hours of the morning?
When you have to attend an important meeting in the morning, you are in a sweet dream at 4: 00 in the morning, but you are suddenly woken up by a cat jumping up and down. Why is the cat owner "crazy" in the middle of the night? How can shoveling officials keep their sleep?
By jsyeem shekels4 years ago in Earth
As long as it is slightly heated, it can help fat burn?
Local heating can activate beige fat in mice and humans, which may be a treatment for obesity, according to a study published in the journal Cell on March 4.
By gaisndm Hawkshaw4 years ago in Earth
Why can birds fly so well?
A collection of journals and services under Nature, dedicated to serving the scientific community, we provide a range of high-quality products and services covering life sciences, physics, chemistry and applied sciences. Among them, the journal Nature (Nature), founded in 1869, is a leading international science weekly.
By jsyeem shekels4 years ago in Earth
13 days, make skin cells 30 years younger and restore their ability to produce collagen | Global scientific news
? Regenerative medicine? 13 days, make the skin 30 years younger. In 2007, Shinya Yamanaka first used cell reprogramming technology to transform normal cells with specific functions into pluripotent stem cells (iPSC), and won the Nobel Prize for this, but normal cells lose their specific function in the process. Recently, a study published in eLife builds on this work by stopping partial reprogramming during stem cell redifferentiation, preserving the specific function of skin cells and "rejuvenating" skin cells.
By gaisndm Hawkshaw4 years ago in Earth
Tianzhou IV was successfully launched and docked with the space station; Chinese team has developed an aerial robot that can "think independently" | Global science news
? Botany? Motuo, Tibet discovers the tallest tree known to Chinese mainland According to People's Daily, a research team led by Peking University (including Peking University, Xizijiang Ecological Conservation Center, Landscape Conservation Center and Beijing Digital Green soil Science and Technology Co., Ltd.) cooperated with the Forestry and grassland Bureau of Motuo County, Tibet. A 76.8-meter-high Budan pine was recorded in Green Village, back collapse Township, Motuo County, Tibet. It broke the previous record for the 72-meter king of Sequoia flousiana located in Gaoligong Mountain, Yunnan Province, and became the tallest tree found so far in the range of Chinese mainland.
By jsyeem shekels4 years ago in Earth
In 17 days, I photographed the International Space Station 400 kilometers away with 600 lines of code.
Tu Yuan Zhu Yijing & Xu Chengcheng, authorized However, at present, several common methods for shooting celestial bodies are not suitable for taking higher-precision photos of the space station.
By gaisndm Hawkshaw4 years ago in Earth
A satellite that has been lost for more than 40 years signals again, but scientists are in deep thought
Nowadays, human space technology is more and more developed, not only can we go to the moon and explore the moon, but also can launch more and more artificial satellites into the earth's orbit.
By Kevin Buttigieg4 years ago in Earth