目前显示的是 四月, 2022的博文

The bluestone of Stonehenge was migrated?

   When it comes to "Stonehenge", everyone is familiar with it, and there are many related studies. Earlier in 2021, the publication of the findings of the Stonehenge project by Mike Parker Pearson and colleagues at UCL caused a media sensation. To determine the origin of Stonehenge bluestone (the smaller stone, not the larger one), the scientific team led by Pearson has been researching for a long time. Using geochemistry to analyse the elemental composition of the stone pillars, Pearson's team confirmed that the bluestone came from the Karn Godog and Craig Rose Evelyn quarries in West Wales, Presley Hills.   Previous research suggests that at least some of the bluestone must have come from quarries in and around Cammenin in the Preseli Mountains. But rumor has it that the stones were first erected locally before being transported to their final destination on the Salisbury Plain, 282km away. This statement seems to be derived from Geoffrey's History of the Kings of

Missing Malaysia Airlines 370 found?

   Malaysia Airlines 370 has been missing for 8 years. Where did this 60-meter-long plane go? Just when people were about to lose their confidence, there was suddenly a big news that detonated the world: Malaysia Airlines 370 has been found, and the wreckage of the plane is located on the seabed 1933 kilometers west of Perth, Australia, where the water depth is about 4 kilometers.   As soon as the news came out, the whole world was in an uproar. You must know that since the disappearance of Malaysia Airlines Flight 370 on March 8, 2014, more than 20 countries have participated in the search and rescue operation, including the United States and China, costing more than 200 million US dollars, and the search and rescue work has continued. For several years, the search area has exceeded 120,000 square kilometers, but it has never been found.   It is said that the artificial satellite technology is very powerful, it can be positioned and tracked, and the highest resolution on the ground ca

Artificial intelligence boosts research and development of new materials

 The development of artificial intelligence is booming. With the continuous extension of its application fields, other disciplines are also gaining unexpected gains from the combination of artificial intelligence, and new materials is one of them. At present, there have been cases of artificial intelligence assisting the research and development of new materials reported abroad. Researchers at the University of Liverpool in the UK have developed a robot that engineered chemical reactions on its own in eight days, completing 688 experiments and finding a highly efficient catalyst to improve the photocatalytic properties of polymers, an experiment that would have taken months to complete manually. Recently, a professor at Osaka University in Japan used 1,200 kinds of photovoltaic cell materials as a training database to study the relationship between polymer material structure and photoelectroinduction through machine learning algorithm. He successfully selected compounds with potential

New technology makes DNA data storage possible

 In a new study, scientists at the Massachusetts Institute of Technology have developed a technique to tag and retrieve DNA data files, which could make DNA data storage possible. At this point, there are about 10 trillion gigabytes (gigabytes) of data on the planet, and every day, humans churn out another 2.5 million gigabytes of data in emails, photos, social media feeds and other digital files. Much of this data is stored in huge facilities called exabyte data centers (1EB is 1 billion gigabytes), which can be the size of several football fields and cost about $1 billion to build and maintain. Many scientists believe another solution to the massive data storage problem lies in the biological macromolecule that contains our genetic information: deoxyribonucleic acid (DNA). Since the beginning of life on Earth, DNA has evolved to store huge amounts of information at extremely high densities. Mark Barth, a professor of bioengineering at the Massachusetts Institute of Technology, says a

New research may shed light on the cause of Mercury's iron core

 Why does Mercury have a large iron core? Now, new research from the University of Maryland suggests that proximity to the sun's magnetic field determines the planet's interior, which may shed light on the mystery of Mercury's iron core. The study contradicts the common assumption that Mercury has a large core, with a size relative to its mantle (the layer between the planet's core and crust). For decades, scientists have assumed that a "hit-and-run" collision between Mercury and other celestial bodies during the formation of the solar system blew away much of mercury's rocky mantle, leaving behind a huge, dense metal core inside, but new research suggests the sun's magnetic field was not the culprit. New research suggests that after the formation of the inner planets, the sun's magnetic field gradually drew iron to the center of the solar system, which explains why Mercury, the closest planet to the Sun, has a larger, denser iron core than the out

From Hibernating Animals, How Humans Learned to Hibernate

Animals that hibernate naturally enter a phase of decline in core body temperature and metabolic rate during hibernation, a state known as torpor. Since ancient times, human beings have never stopped thinking and exploring the universe. "The earth is the cradle of mankind, but mankind cannot live in the cradle forever," said Tziolkovsky, the founder of modern spaceflight and known as the father of spaceflight. In the 1960s and 1970s, though, man had already set foot on the moon. But until now, we were confined to cislunar space. That's because it would take 500 days to get to Mars, our nearest habitable planet, and back. The nearest star to our solar system, Proxima Centauri, is 4.22 light-years away. In addition to the long distance, a series of physical and psychological problems faced by astronauts in long-term space flights and the extremely limited resources on the spacecraft are also obstacles to our journey to deep space. In science fiction and movies, astronauts o

Wrong kidnapping target

    Donald is very rich, but he hides it. He never drives a luxury car, never wears famous watches and accessories, and only lives in a humble villa on the outskirts of the city. Neighbors could not see that his net worth reached 1 billion euros.    In recent years, Donald has become more interested in politics, and his future goal is to run for federal parliament. His wife Lucia was not low-key. She liked fancy clothes and expensive accessories. Donald was worried that she would provoke trouble, but he couldn't control her.    Lucia's high profile eventually led to disaster. On this day, Lucia was kidnapped by three kidnappers on her way home from the beauty salon and taken to an abandoned warehouse in the suburbs. Immediately, Donald received a call from the kidnapper: "Your wife is in our hands, don't call the police, take 500,000 euros in cash, and we'll let them go."    At first, Donald was panicked, but when he heard "500,000 euros" , breathed

How far is the new crown cure from us?

   The new crown epidemic broke out for more than two years and affected billions of people around the world. The vaccine that people had high hopes for failed to completely control the epidemic. Therefore, people shifted their expectations to specific drugs. If specific drugs are available, even if they are sick, He will recover soon, and we won't have to talk about the disease's discoloration. So, how long will it take for the cure to come? How to do antiviral drugs   We already know that virus invasion of cells is roughly divided into three stages: entering cells, dividing and replicating, and finding a home. If we can interfere with any of these steps, we will achieve the purpose of anti-virus. Pharmaceutical experts are in the same vein.   HIV has the "key" to open the door of human immune T cells. When it encounters T cells, it will quickly open a small opening in its cell membrane that only genetic material RNA can enter. Then HIV will abandon its own protein c

The road to promotion is not hard work and crowning

   The most important transition early in the workplace is from waiting for recognition to gaining support.   As a leader, in fact, I dare not.   Beginning as a project manager, I have become one of many excellent middle-level members of McKinsey.   Around the same time, I started to focus on gender issues. At that time, there were many excellent women at the managerial level, but at the top, there were significantly fewer women. There were structural restrictions on women in the workplace. But I don’t know if female friends have asked themselves, if there are no external constraints, do we dare and want to be big leaders?   At the time, I honestly didn't want to.   At the time, I was an excellent project manager, experienced the first two stages of growth, worked beautifully, and was confident. On the one hand, I am very "high" and disdain to think about promotion; on the other hand, I am not used to some things in the company and do not want to "mix" with the

Why are people in the workplace always being targeted at work?

   Once, I was also the "imaginary enemy in the workplace" in the eyes of others.   Here's the thing: I was pulled into the program as a contributing writer on a major event newsletter, and as soon as I got in, a contributor (let's call it A) spoke to me in a weird way. Later I learned that because I had been praised by the leaders for a good draft before, and the previous draft of A was repeatedly uncorrected, she was afraid that after I officially participated in the project, the leader would be even more dissatisfied with her, so she turned on the cynicism mode to me.   In the workplace, there are many people like A who often feel "I'm being targeted". Of course, it is not ruled out that sometimes it is true, but more often it may be that you have fallen into some thinking traps.   The first kind of thinking trap is called "excessive brain supplementation", commonly known as "playing the upper body".   People who fall into this kin

The Douyin Algorithm Turns: KOE's Outlet Is Coming

   Recently, a series of actions by Douyin have provided a better platform for the rise of KOE (Key Opinion Employee). From the public domain to the private domain, Douyin intends to enhance the stickiness of fans   The basic algorithm of Douyin is based on public domain traffic. The public domain traffic is like individual customers in the square, and the Douyin algorithm will push these individual customers to those accounts or live broadcast rooms that are more efficient in e-commerce. This method has extremely high requirements for anchors to keep people, but at the same time, it also leads to the low value of Douyin fans. A large size with 10 million fans, if the fans are not vertical enough, its sales conversion rate may not catch up with a mid-waist account with 20,000 to 300,000 fans.   As Douyin e-commerce matures, its requirements for GMV (gross merchandise transactions) are also higher. As a result, Douyin needs more accounts with sticky fans and strong consumer appeal, whic

Artificial intelligence is accelerating changes in production and life

 In the medical, travel, government and other fields landing "Face brushing" on airplanes, self-driving cars actively recognize and avoid pedestrians, and help doctors diagnose diseases. Typical application cases of ARTIFICIAL intelligence enterprises published by the Cyberspace Administration of China (CAC) have attracted attention. Driven by new technologies such as mobile Internet and big data, ARTIFICIAL intelligence has ushered in a new round of development boom and really entered the stage of implementation, accelerating the change of people's production and life. Vivid scenes, at your fingertips "It's so convenient to brush your face through the gate." Wen Sijing, who was born after 1995 and works for an Internet company in Shenzhen, praised his flight experience at Shenzhen Bao 'an International Airport. Because of his busy work, he often flies for business. He said that since the introduction of smart security checks at airports, people do not h

Microplastics invade the human placenta

 Man uses science to create an "eternal" material, uses it and then wants to throw it away. But for now that seems impossible, every piece of plastic ever created is still with us. When we were kids, we were often warned "don't swallow gum because it sticks to your intestines." Of course, we later learned that swallowed gum leaves your body in your poop. The base of many modern gums is made of synthetic rubber, and gum is also known to contain plastic. Plastic does not digest, eat "through the intestines", just pull out. But it's not as simple as that. While plastic bags or water bottles in the environment can break down to the point where they're no longer an eyesore, tiny pieces can still be ingested by animals and humans. In fact, microplastics have already been found in fish and mammals, and now, new research has found that microplastics are ubiquitous, as well as in the human placenta. Microplastics found in human placenta for the first ti