目前显示的是 一月, 2022的博文

Invading man

   In the middle of the night, Lao Kan was sleeping soundly when he suddenly heard a noise in the room.   He opened his eyes with difficulty and listened carefully for a while. There was someone in the room.   His wife was sleeping soundly, he didn't disturb her, but got out of bed to check.   There is a carpet next to the bed, so there is no sound of feet on the ground. He didn't even wear slippers at all, and tiptoed to the living room. Under the moonlight, a man was struggling to open his door. When Lao Kan came back, he locked the door and needed fingerprint identification to go out. The man was eager to go out, and he carried a black bag on his back.   "Who is it!" Lao Kan shouted, turning on the lamp. Suddenly, a bright light exploded out of the darkness, and the two men confronted each other.   "Bring out the valuables!" said the man fiercely.   At this time, the wife also woke up and came over with her slippers on. Seeing the battle, she cried out in

Civilian drones change the world of air spirits

   For more than half a century, due to war and commercial needs, UAVs have achieved unprecedented development in both military and civilian fields, and have become the most popular technology "darling" nowadays, and are highly praised by countless people. A century of history stems from war   UAV is a general term for unmanned aerial vehicles, usually referred to as unmanned aircraft, and its English abbreviation is UAV. Autonomous operation is performed intermittently. From a technical point of view, UAVs can be divided into unmanned fixed-wing aircraft, unmanned vertical take-off and landing aircraft, unmanned airships, unmanned helicopters, unmanned multi-rotor aircraft, and unmanned paragliders. Compared with manned aircraft, UAV has the advantages of small size, low cost, convenient use, and low requirements for the flight environment.   UAVs were originally designed and built primarily for military use, first appearing in the 1920s. In 1914, when World War I was in ful

How did the universe make the first element?

   We've all heard the story of the Big Bang at one point or another. It all started in an incredibly high temperature and dense state, and then the universe continued to expand. This expansion spreads everything out in the universe while reducing its energy and temperature and forcing particles to interact, decay and freeze...   4 seconds after the big bang, there are no free quarks in the universe , no more antimatter, and no more neutrinos to collide or interact with any remaining particles. At this time, there is more matter than antimatter in the universe, each proton or neutron corresponds to 1 billion photons, and the temperature of the universe is only slightly lower than 1010 K at this time. However, it can't make any elements yet.   How was the first element of the universe created? This needs to start with what happened in the 3 seconds after the big bang, which is especially important for the production of the following elements. unstable protons and neutrons   The

Don't take alcohol without alcohol

 | Non-alcoholic beer |   Vitality Brewing Company is headquartered in Stratford, Connecticut. Last June, I went to the company's bar demo. On the day of the visit, the sun was shining, and when I walked to the door, I smelled the long-lost smell of hops.   Bill Schuffett, 38, is the company's co-founder, and in 2017 he co-founded Vitality Craft with John Walker. He gave me a pint of Double Hedge, a cloudy Indian ale. The beer, developed by Schuffett and Walker, is still in the testing phase. I've been sober for a long time and this is the first time I've touched alcohol in 1888 days.   For the past 20 years, Americans have had a hard time drinking no-alcohol craft beer, a situation that has only recently improved. Back in 2016, you could find a bottle of Anheuser-Busch non-alcoholic beer in the corner of the refrigerator in the convenience store, even if you were lucky; in 2021, if you go to a chain winery, you can see the non-alcoholic beer of more than ten manufactur

Eye disease linked to increased dementia risk, study shows

   According to reports, a research paper published in the "British Journal of Ophthalmology" in mid-September showed that people suffering from age-related macular degeneration (AMD, Age-related macular degeneration), cataracts and diabetes-related eye diseases, elderly There is an increased risk of dementia, but no link has been found between glaucoma and Alzheimer's.   Alzheimer's disease is becoming more and more common, but so far, we still have no effective drugs to prevent or stop its development. At present, relevant research has found that some factors may increase the risk of Alzheimer's disease, such as people with diseases such as weight-related diseases, depression, high blood pressure, diabetes, coronary heart disease and stroke, their risk of Alzheimer's disease will also be rise.   One of the early manifestations of Alzheimer's disease is heart blindness, also known as imaginative disorder and visual deficit disorder. For example, when you

The Seven Years Pain of the Malaysia Airlines Mystery

   2021 is coming to an end, and Malaysia Airlines MH370, which has been missing for seven years, has new clues.   On November 30, a British aerospace engineer named Richard Godfrey issued a report saying that the crash location of the crashed passenger plane Malaysia Airlines MH370 had been found.   In his report, Godfrey mentioned the investigation of MH370's track by using GDTAAA, a system for global detection and tracking of aircraft anytime, anywhere, and WSPRnet, a digital radio communication tool designed for weak signal propagation. The results show that the crash site is located at 33.177 degrees south latitude and 95.300 degrees east longitude—this coordinate is located in the Indian Ocean waters 1993 kilometers west of Perth, Australia. between the volcanoes.   This time, the mystery of Malaysia Airlines is finally about to be revealed? Memories of the crash that never go away   Back in time to March 8, 2014, at 0:41 am, Malaysia Airlines MH370 flew from Kuala Lumpur Int

The bigger the brain, the longer the yawn

   Do animals other than humans yawn too? The answer is obvious, yes! We are familiar with cats, dogs, rabbits, voles, hedgehogs, koalas and other small animals, as well as horses, tigers, lions and other large animals, all yawn. Snakes, turtles, iguanas, etc., among reptiles, as well as birds and even fish, all yawn. In conclusion, yawning behavior is present in all vertebrates.   There is a saying - the bigger the brain, the longer the yawn! is this real?   To confirm this claim, the researchers collected 1,291 separate pieces of yawning data from zoos and online videos, involving 55 mammal species and 46 bird species, and found that the animals yawned when they yawned and the size of their brains. There is a "strong positive correlation" between them.   After careful observation and statistical comparison of the duration of yawning in various animals, the researchers found that although the pattern of yawning is fixed, its duration is positively related to the size of the

The wind blows the hometown to be safe every year

   Dear grandmother:   I am all right.   The rain outside the window was pattering like Acacia.   When I woke up this morning, I saw my hometown again, saw the smoke from the cooking, saw the large orange grove behind our house, and saw you standing at the intersection with an umbrella and watching me go home.   Open the window, the air is filled with the fragrance of grass and trees, and the hawkers are screaming on the street. Every time on a windy day, the air will smell of hometown, and the clouds today are very similar to the one in front of our house. Duo, but it is impossible for me after all. Every windy day, I think of you, but today you are not by my side.   I often think that I am the wind, the end of the road is the road, and there is the sky beyond the sky, only the wind, only the wind can blow through every piece of land in my hometown that is budding or about to sprout, blowing every morning that will not fall Dew drops, blowing over every ignorant magnolia tree in front

Less "Carbon" Score!

   In the summer of 2500, a spacecraft from the star Gliese 581 Libra, 20 light-years away, entered the solar system. After the spacecraft intercepted the Voyager 1 probe, it learned the existence of the earth and humans from the copper disk storage carried by the probe, and then passed through the comet zone and barren land at the edge of the solar system, and galloped excitedly towards the center of the solar system. , eager to reunite with mankind as soon as possible. However, the Gliese people on the spaceship saw that the earth in front of them was covered by a white sea of ​​clouds, and it was not at all the blue appearance described in the copper plate. The Gliese decided to first release a probe robot to investigate the earth's environment. The robot landed on the earth through the sea of ​​clouds and found that the concentration of carbon dioxide in the earth's atmosphere is very high, the ground is full of deserts, there are no human beings who speak 55 languages ​​on

warm meaning

   There is a kind of home heating equipment called "carbon crystal wall heating", and its appearance is a very ornamental and beautiful landscape painting. This heating device can be hung on the wall, does not occupy indoor space at all, keeps the home warm all day, and is waterproof, anti-leakage, no noise, no dust, etc. It can be said to be a kind of humanized heating equipment.   It is said that the appearance of this device was originally conceived from a painting. When the inventor bought a watercolor painting, he was deeply moved by the warmth of the picture: on the picture, an old couple in their sixties sat around a warm fireplace, the old man was drinking coffee leisurely, the old lady was knitting a sweater, The warm and calm family atmosphere in the picture makes people seem to reach out and touch. Isn't this kind of simple and warm life what everyone wants most? Because of this painting, he was inspired to create.   Warmth is the quality of life, and no one d

Every good has a memory

    Parents are going to build a new house in their old home. I was not very motivated at first to build such a house. I don't have an older brother or younger brother, my older sister and three younger sisters are all married out, and they all built very beautiful houses. I bought two houses in the city myself, one for my wife and I and one for my parents. The only child works in a college along the coast and has a house, so I can't think of a reason to build a house in my hometown. But my parents are farmers, and they hope to return to the countryside after a hundred years. There should be a place to put a life vessel in the village to hold a happy event. They are eager to build a house, and I am not too opposed to it. After thinking about it for two or three months, I finally decided to support it.    The foundation is ready-made, and the old house can be demolished to rebuild it. My parents also have the funds for building the house. Even if I add a little, the amount will