3:46:00
Recommended
Polypropylene is one of the most widely used types of general plastics. It has the advantages of low density, good rigidity, resistance to flexing, chemical corrosion, and good insulation. Its shortcomings are poor low-temperature impact performance, easy aging, and large molding
Is polypropylene shrinkage difficult to control? What are the influencing factors? "Attached is a table of shrinkage rates of common materials"
06/05
1063
Don’t study eternal life. Eternal life will tie humans to the earth. I know that many people are afraid of death. The body is getting younger and younger, at least the mind is getting younger and younger, and it is getting smarter and smarter. If this thing really happens, then I
The pursuit of immortality will trap humans on earth
06/05
1978
What I find fascinating is how the proteins themselves actually become molecular machines, much like the kinesin GIF above or the ribosome below where some of the proteins assemble into biological machines.
What are some examples of the strangest and strangest proteins found in nature?
06/06
1053
Suddenly a warm breeze arrives, followed by a slight summer heat. July 7 ushered in the Xiaoshu solar term. Xiaoshu is the 11th solar term among the twenty-four solar terms and the fifth solar term in summer. "Shu" means hot. Xiaoshu means "little heat". It is not very hot at thi
It’s a slight heat today! The warm wind is coming, the mild summer is coming, and the long summer is at its peak.
06/05
1662
In Chongming, the mouth of the Yangtze River, there is a group of people responsible for a small but important part of this large project - fishing management. July 4th, sunny to cloudy, southeasterly wind of level 4-5 in the Yangtze River waters.
They shouted in the Yangtze River: This matter cannot be done
06/05
1613
A sand battery works like a solar panel: it collects heat and stores it as energy. But sunny days are extremely rare in Finland, especially in winter. So Finnish experts have invented something similar - an eco-friendly battery with ordinary sand inside. New eco-friendly battery
The world's first sand battery has started working | It helps store thermal energy and heat places
06/06
1379
01: The largest bird sculpture in the world is located in the southwestern state of India, Kerala. It is 61 meters long, 45.72 meters wide and 21.3 meters high, and is decorated with intricate details.
28 Miracles of Humanity and Nature That Are So Amazing and Depressing
06/06
1984
High-end polyolefin - one of the eight new chemical materials, is a polyolefin product with high technical content, high application performance and high market value.
The over-trillion high-end polyethylene industry explodes! Have you seized this new blue ocean market?
06/05
1697
No matter from which angle you look at it, Peng Yongzhen is not one of those who wins at the starting line. This academician of the Chinese Academy of Engineering and professor of Beijing University of Technology cut wood in the mountains when he was young, and did not enter univ
Academician Peng Yongzhen: Don’t let “late start” become an excuse
06/05
1510
Academician Wu Jianqi (first from right) guides scientific researchers in equipment testing in the microwave anechoic chamber of the 38th Institute of China Electronics Technology. Radar is known as "clairvoyance" and can detect and locate aircraft at long distances. "After the e
"Approach Academician" Wu Jianqi: Make invisible aircraft visible
06/05
1322
Relation Video
science Relation Video
Site video recommendation
science Latest News
The proposal of dual carbon targets has not only made new energy industries such as electric vehicles and hydrogen fuel vehicles soar, but also provided scientists with a research topic, that is, how to turn carbon dioxide into waste through new technologies to achieve carbon red
New applications for solar energy! Michigan professor proposes new process to use CO2 and water to prepare chemical fuels to achieve carbon reduction goals
06/07
1010
This strange, fluid-like electronic behavior could be used in the next generation of low-power electronics, potentially making them more efficient. Although they are discrete particles, water molecules flow collectively as a liquid, creating streams, waves, eddies, and other clas
Scientists observe for the first time 'electron vortices' that could help design more efficient electronics
06/07
1885
In the classic Korean drama "Blue Life and Death", there is this sentence: "In my next life, I want to be a tree, so that I can always stay in one place and never leave." From ancient times to the present, trees have always been "rooted in the earth" "The image of "appeared", and
Did you know that trees can walk?
06/07
1595
Close your eyes and imagine that you eat some purple grapes and then your whole body turns purple. Isn't this scary? Of course, such bizarre things don't happen to humans. But Melissa Abramovitz told me that this is exactly what happens in sea caries.
How do sea slugs change color?
06/07
1411
How cold is space, and does it drop to absolute zero? What would happen if you fell in without a spacesuit? While science fiction movies would have us believe that space is very cold — even very cold — space itself is not entirely cold. In fact, it actually has no temperature at
How cold is space? The physics behind the temperature of the universe
06/07
1950
[CNMO News] Weight loss has always been a hot topic among people. Some people eat too much and don’t gain weight, while some people gain weight even if they drink water. Therefore, losing weight also troubles many people. They have tried various methods but still have no effect.
It may be possible to eat dry without gaining weight. German scientists discovered signaling molecules that promote fat burning
06/07
1217
Site Latest News
On the 7th, Tianjin officials issued a 2022 pension adjustment notice, which clarified that the replacement payment will be in place on July 31, and the replacement payment will also be issued from January to June, which means that the wages received by retirees will increase. Bu
Tianjin will raise pensions for 2022. Which category of people will see the biggest increase? How much can I get if I have 15 or 20 years of service?
06/07
1543
French biologist Georges Cuvier once said: Genius is, first of all, attention. Montessori, an Italian child educator, once said: The great discoveries that have brought progress to mankind are not so much due to the scientists' education or their knowledge, but rather to the abil
Pediatrician Wang Ling said: How to cultivate attention to improve children's learning ability?
06/07
1962
Corporal punishment of dogs is something that many owners will do after their dogs make mistakes. Although corporal punishment is possible for dogs, many people don’t know that smart owners will never hit these four lower parts of their dogs! When punishing a dog, which 4 parts s
Corporal punishment of dogs works! But a smart owner will never hit these four parts of it
06/07
1953
"Many small and medium-sized enterprises have risen to the challenge, overcome difficulties, fully carried forward the spirit of struggle, and passed through difficult passes." "'For the sake of sacrifice, we have great ambitions and dare to teach the sun and the moon to create a
The Central Party Branch and the Association Party Branch organized all party members to carry out the "July 1" speech contest theme party day activities
06/07
1351
Europe's manufacturing industry has been dependent on Russian energy for decades, and now it is about to be cut off. Can the EU really bear it? According to Russian Prime Minister Vladimir Putin: Due to internal ambitions and the pressure of US hegemony, European countries are de
Sanctions have been imposed, but not completely. The EU is still the largest buyer of Russian energy.
06/07
1733
Nanning is the capital of Guangxi. The city is green all year round and is known as the "Green City". Ask locals where they go to eat delicious food, and they will usually tell you Jianzheng Road and Zhongshan Road. Today we will take you to Jianzheng Road first to check out the
Food check-in guide on Jianzheng Road, Nanning, Guangxi! Do you love spicy, sour, sweet and salty?
06/07
1443