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[Plumbing Valve Network News] Valve corrosion is one of the main reasons for valve failure. There are several forms or causes of corrosion, which can be roughly divided into six forms of corrosion. Corrosion is a natural wasteful way of drawing metals into their ores.
How are hotel valves corroded?
06/05
1747
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
Cockroaches are commonly known as Xiaoqiang, and I believe everyone is familiar with them. Cockroaches are one of the oldest insects on earth, living at the same time as dinosaurs and other ancient creatures. It is even more than 100 million years earlier than the birth of the fi
Should you step on a cockroach if you see one at home?
06/06
1039
Genome-wide association analysis (GWAS) shows that more than 90% of disease-related mutations are distributed in non-coding regions, and the "tail" of the gene, that is, the 3'UTR (3' untranslated regions) region is more enriched, but its functional and direct Causal analysis is
Cell | High-throughput functional analysis of non-coding mutations that directly affect disease and evolution
06/05
1926
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
Many people don't know why astronauts wear spacesuits even in the return capsule when they return to Earth. Since Gagarin entered space in 1961, more than 500 astronauts have launched into space to perform missions, of which 22 astronauts died during the mission.
Three Soviet cosmonauts are sleeping in space, and a special "remains" will fly out of the solar system
06/04
1583
Octopus is an invertebrate animal in the ocean, but compared with other earth creatures, octopus has too many unique characteristics, such as certain physiological structures and behavioral characteristics, that even more advanced vertebrates cannot compare with. . Judging from t
It’s too harsh on yourself! After mating, octopuses sometimes eat themselves. Why do they do this?
06/05
1990
Many oligonucleotide drugs require modifications where their phosphate bonds are connected to improve their absorption efficiency and stability (1). Oligonucleotide drugs usually need to be modified to improve stability and absorption efficiency (1). However, this also brings abo
Science | More flexible oligonucleotide synthesis
06/05
1612
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
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
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[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
A bus-sized planet will pass close to Earth today, Thursday, July 7, passing within just 56,000 miles (90,000 kilometers), or 23 percent of the average distance between Earth and the moon. The asteroid, called 2022 NF, is expected to pass safely by our planet, according to calcul
Scientists detect a bus-sized planet that will approach Earth tonight
06/07
1270
In the eyes of many people, "alien" and "alien civilization" are synonymous with advanced civilization, and their civilization is much higher than human civilization. In many science fiction novels and movies, this point is particularly prominent. Aliens always appear to be omnip
Fears that aliens visiting Earth will wipe out human civilization may be unfounded
06/07
1641
As we all know, since humans have known about the universe, they have always wanted to explore its mysteries. At present, the scientific community generally believes that the earth will not be the only oasis in the universe. After all, the vastness of the universe is beyond our i
Astronaut encounters aliens in space, tells the story of the origin of intelligent life and the cause of the universe, shocking the world
06/07
1206
In the movie, the dungeon lord Gruishka is waiting for a major makeover in order to capture Alita, with his head and spine hanging in the air and twisting around.
He is gone, "Peter 2.0" lives forever! Cyborg Evolution Design Guide, are you interested?
06/07
1197
According to relevant records, very "weird" creatures actually appeared in Japan as early as the 1960s and 1970s. At that time, this strange-looking species had a "protruding mouth, hairless body, wrinkled skin, like a dog and a monkey, and walked with a tremble." On the one hand
Mysterious hairless animal with long face discovered in Japan! Experts warn: Don’t touch it, what exactly is it and why?
06/07
1192
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The Shenzhou 14 astronauts will give scientific lectures in the "Wentian" experimental module of the China Space Station, which is scheduled to be launched this month. Left to right: Cai Xuzhe (operator), Chen Dong (commander) and Liu Yang (operator), crew members of China's Shen
Shenzhou 14 astronauts will give scientific lectures in the "Wentian" experimental module of the China Space Station
06/07
1711
Currently, there are 15 domestic suppliers providing materials, components and assembly services for the A220, and every A220 aircraft has parts made in China.
Airbus A220 has 15 Chinese suppliers and domestic airworthiness certification is in progress
06/07
1530
He was a soldier. In December 2000, he bid farewell to his military career, returned to Linhe, and became a new recruit on the tax front.
[Strive forward on a new journey and build a new era of meritorious service] Wu Peng: a tax blue and a sincere heart
06/07
1981
The 47-ton K9 has a range of over 40 kilometers using conventional 155 ammunition and it can move at speeds of up to 67 kilometers per hour. A three-round burst can be achieved in less than 15 seconds, with a maximum rate of fire of 6 to 8 rounds per minute for 3 minutes.
Why is the Korean-made K9 self-propelled howitzer so popular?
06/07
1868
Taurus Taurus people are very low-key, sharp and witty in speech, thoughtful in everything, and will not tell other people's secrets easily. They act according to the rules. Sometimes they are too worried and take everything into consideration, which makes them thankless.
Stay up for another 7 hours, the four zodiac signs will be full of confidence in the future, live a happy life, and have many happy events
06/07
1511
Sagittarius Sagittarius people are responsible at work, think rationally, have the spirit of self-sacrifice, are frank and lively, often hesitate when encountering problems, have a bad temper, act recklessly, and are very persistent in their rights.
If you stay up for another 7 days, your money will double for the four zodiac signs and you will have good luck again and again.
06/07
1670