Today viewpoint

　　Aerospace gives people a special feeling of "high cold", which reminds them of advanced fighter planes and magnificent space stations that ordinary people can’t see, touch or use.

　　A few days ago, the well-known American website "GOBankingRates" took stock of 25 kinds of technologies originated from the National Aeronautics and Space Administration (NASA) in our daily life, which spread all over our "food, clothing, housing and transportation". They come from the distant sky, but they are convenient for our daily life.

　　Food: baby milk powder, freeze-dried fruit, food safety packaging.

　　At present, more than 90% of infant formula in the United States contains microalgae. It was originally the product of NASA research, the purpose of which was to test the potential use of algae as an oxygen "recycling agent" in space travel.

　　Freeze-dried fruit is a common snack. However, the purpose of NASA’s development of freeze-drying technology is to make the fruits in the Apollo mission easier to carry, and this technology can maintain 98% nutrition with 20% quality.

　　In order to ensure the safety and quality control method of space flight food development, NASA has now become a food industry standard to protect the food safety of consumers all over the world.

　　Life: memory foam mattress, scratch-resistant lenses, anti-ultraviolet sunglasses, cordless vacuum cleaner, Nike air-cushion sports shoes, space blankets, ski boots.

　　Comfortable memory foam mattress can fully fit the human body and relieve stress, which is necessary for many families. Memorable foam was not originally used to make mattresses. It was originally developed by NASA to cushion the impact of spacecraft landing on astronauts.

　　Compared with ordinary glass, scratch-resistant lenses have a longer life. In fact, the scratch-resistant coating is a "by-product" accidentally discovered by Jet Propulsion Laboratory (JPL) under NASA when researching the diamond hard coating for aerospace.

　　In 1980s, two scientists from JPL developed a kind of welding glasses, which can absorb, filter and scatter the strong light emitted during welding. Later, this technology was widely used in anti-ultraviolet sunglasses.

　　Initially, Black&Decker was ordered to develop a portable device for Apollo and Gemini missions, which was used to extract samples from below the surface of the moon. This technology has been improved to become a "cordless vacuum cleaner".

　　Nike air-cushioned sneakers use the patent of "Blow Rubber Molding" obtained by M. Frank Rudy, a former engineer of NASA. The initial application target of this technology is spacesuit.

　　The space blanket is insulated and heat-preserved, which is an essential item for survival in the wild and marathon. But it was originally developed by NASA to protect spacecraft and astronauts at low temperatures.

　　In addition, the technology used by NASA in the joints of spacesuits has been improved and used in ski boots, which improves the athletes’ control ability in skiing.

　　Home: swimming pool purification system, household heat insulation materials.

　　In order to resist the extremely low space temperature, NASA made an insulating material called "radiation barrier" from aluminized polyester. According to JPL, aluminized polyester is now used in most household insulation materials.

　　In 1960s, NASA developed an electrolytic silver iodide filter to provide clean drinking water for astronauts, and now it is widely used to purify swimming pools.

　　Travel: aircraft deicing system, precision GPS, anti-skid groove on highway, better tires.

　　According to NASA’s technology transfer plan, civil aircraft can fly in cold weather, mainly due to a thermoelectric deicing system called Thermawing developed by NASA.

　　Many mobile phones are equipped with precision GPS technology developed by JPL, and its data comes from JPL global GPS receiver network. Even if there is no wireless connection, you can still use GPS positioning on your mobile phone.

　　NASA’s Langley Research Center has developed anti-skid slot technology to prevent aircraft accidents on wet runways. Later, this technology was widely used in expressways.

　　In 1970s, Goodyear Company developed a new tire material for NASA Viking Mars probe, which was used in parachute system. This technology was later used to improve ordinary tires, increasing their life by 10,000 miles.

　　Electronic products: mobile phone camera, notebook computer, high-power solar cell, wireless headset, mouse, CAT scanner.

　　In the 1990s, NASA asked JPL scientists to make a miniature camera that can be installed on spacecraft while ensuring the quality of photography. According to JPL, one-third of mobile phone cameras now use this technology.

　　According to the Smithsonian National Air and Space Museum, "Grid Compass" is the first notebook computer in the world. It was first used in the space shuttle mission in 1983, which is one of the inventions of NASA.

　　The crystalline silicon solar cells used in the home originally came from the lightweight solar energy system developed by the Environmental Research Aircraft and Sensor Technology Alliance under NASA for electric aircraft.

　　NASA has developed wireless headphones for astronauts to facilitate their communication. Now this technology has entered thousands of households.

　　According to JPL, a NASA researcher developed a computer mouse in the 1960s, which allowed users to operate on the computer screen and made the computer more interactive.

　　JPL initially developed a CAT scanner to scan aerospace components to get advanced digital images to detect defects. Now, it has become a commonly used medical instrument.

　　Medical care: cochlear implant, invisible dental appliance, ear temperature thermometer.

　　Adam Kiser, an engineer at Kennedy Space Center, used his working experience in electronic, sound and vibration sensor systems in the space shuttle project to develop early cochlear implants by using electric pulses instead of sound amplification technology.

　　Compared with the traditional metal appliance, the invisible dental appliance is more beautiful. It is made of transparent polycrystalline alumina, which was originally developed by NASA to track heat-seeking missiles.

　　Nowadays, many parents use ear thermometer to measure the temperature of sick babies or young children. According to JPL, this thermometer adopts infrared dissection technology invented by NASA and Diatek.

　　There is always one of these 25 technologies that you have seen, touched and used. Aerospace technology can not only be used in high space, but also improve our quality of life after landing, which is one of the driving forces for human beings to explore and fly higher and farther.

　　(Science and Technology Daily, Beijing, July 8 th)

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　　　　乒乓球是中国的“国球”，中国乒乓球队有着辉煌的历史，已获得16枚奥运金牌。胡锦涛来到乒乓球馆，了解国家女子乒乓球队训练情况。

胡锦涛来到乒乓球馆，了解国家女子乒乓球队训练情况。

　　　 张怡宁、王楠代表国家女子乒乓球队，向胡锦涛和习近平分别赠送了球队集体签名的乒乓球拍。

胡锦涛在球拍上签名，回赠给国家女子乒乓球队。

　　乒乓球台上银球飞动，队员们正在激烈对攻。胡锦涛兴致勃勃地在一旁观战。

　　一轮比赛结束后，运动员们围拢到领导同志身边。张怡宁、王楠代表国家女子乒乓球队，向胡锦涛和习近平分别赠送了球队集体签名的乒乓球拍。总书记高兴地接过球拍，笑着说，这个礼物很珍贵，我一定保存好！接着他又在另外3块球拍上签名，回赠给国家女子乒乓球队。得到这意外的礼物，队员们激动不已。

　　胡锦涛说，看到乒乓球队全体队员士气高涨、状态良好，我们感到十分高兴。希望你们发扬优良传统，坚持“从零开始”，加强针对性和实战性训练，在奥运会赛场上为祖国争得更多的荣誉。也希望你们与各国运动员多切磋、多交流，共同推动世界乒乓球运动发展。

　　临行前，胡锦涛对乒乓健儿们说，我等着你们的好消息！

责编：王超

On November 6th, Beijing time, let’s take a look at the European football situation yesterday morning.

1. Barcelona 2-0 almeria at home.

Levan missed a penalty, De Jong and Dembele each scored a goal, and Barcelona beat almeria 2-0 at home, winning four consecutive league games. Recently, Barcelona scored 10 goals in four league matches, but kept 0 goals.

After the game, 35-year-old Pique delivered a tearful farewell speech at Camp Nou, officially ending his 14-year career in Barcelona.

2, AC Milan home 2-1 spezia
Gill, 36, came off the bench in the 72nd minute and scored the winner in the 89th minute, helping AC Milan beat spezia 2-1 and scored the crucial 3 points, overtaking Atalanta and rising to the second place in Serie A..

Gill was sent off after taking off his clothes to celebrate the goal. It was his second yellow card in just seven minutes. He had just been warned by the referee for complaining too much.

3. Manchester City 2-1 Fulham at home

In the 95th minute, De Braune made a point, Harland hit a penalty kick, and 10-man Manchester City beat Fulham 2-1 at home. At first, they thought they were going to lose 2 points, but in the end, they got 3 points narrowly. Finally, they temporarily overtook Arsenal, who had one game less, by one point, and reached the top of the Premier League.

4, Bayern away 3-2 Hertha Berlin

Shu Bo-Mo Ting rang twice in two minutes. Bayern beat Hertha Berlin 3-2 away, winning 8 consecutive victories in all competitions and 4 consecutive victories in the Bundesliga, and temporarily surpassing Berlin by 2 points to reach the top position. In the last seven competitions, Shu Bo-Mo Ting scored nine goals for Bayern.

Bayern was chased by Hertha Berlin for 4 minutes with a 3-0 lead in the first half, but it was almost a draw by Hertha Berlin in the final stage of the second half.

5, Naples away 2-1 Atlanta

Osmain scored the winning goal, Elmas scored the winning goal, Napoli defeated Atalanta 2-1 away, won 9 consecutive victories in the league, and continued the unbeaten start of 13 rounds (11 wins and 2 draws), holding AC Milan at the top of the list by 6 points.

When it comes to exercise, many people are worried about hurting their knees.

So what kind of exercise hurts the knee the most?

The answer is

Sitting for a long time hurts your knees the most!

Long-term sedentary articular cartilage will gradually lose nutrition and "starve to death"

So exercise properly.

To prolong the life of the knee.

But the premise is to master scientific methods.

Avoid unnecessary damage.

Chen xingzuo

china japan friendship hospital

Deputy chief physician of orthopedics

Climb mountains and stairs

Risk of knee injury: ★★★★★★★

When going up the mountain (stairs), your knees will bear about three times your own weight.

When going down the mountain (stairs), the knee will not only bear the impact of the ground, but also increase the wear of the knee.

Therefore, it is not recommended to climb mountains and stairs as daily exercise.

Click on the picture below to see the correct posture of going up and down the stairs.

Key points of climbing without hurting knees:

The center of gravity is slightly forward when going up the mountain and slightly backward when going down the mountain.

Hold the railing to help or use the trekking pole.

Knee injury, good leg first when going upstairs, bad leg first when going downstairs.

Tip: Old people, overweight people and people with knee injuries are best to crawl less. Don’t insist on climbing if your knees are uncomfortable.

rope skipping

Risk of knee injury: ★★★☆☆☆

The risk of skipping rope to knee joint is mainly related to the venue.

Generally, the concrete floor downstairs in a residential area can’t provide an effective buffer for the impact force when skipping rope falls to the ground, and it is easy to hurt the knee for a long time.

Key points of skipping rope without hurting knees:

Choose plastic floor or cement floor to lay plastic mats.

When jumping, keep your feet close together to avoid bending your knees greatly.

The take-off height is 2 cm ~ 4 cm, so as to ensure that the skipping rope just passes through the soles of the feet.

Shake the rope with wrist strength and keep the big arm close to the torso.

jogging

Risk of knee injury: ★★☆☆☆

Jogging rarely causes knee injuries as long as it is not excessive.

A few people with obvious O-leg, X-leg deformity or knee joint disease and overweight should exercise reasonably according to the doctor’s advice.

Key points of running without hurting knees:

Warm up for 5-10 minutes before jogging, and run for 30-60 minutes every day, without paying too much attention to the distance.

Lean forward slightly, swing your arms naturally, and touch the ground with your forefoot.

Keep the speed "breathing, heartbeat is slightly faster but you can talk normally"

Plastic ground and asphalt road are selected for the site, and cement ground is not recommended.

Tip: Treadmill needs to be used with caution. If the setting is unreasonable and the speed is too fast, it is difficult for the average person to keep up with muscle strength and coordination after fatigue, but it is easy to get injured. In addition, the weight is too large, and the injured knee joint should be guided by a doctor.

At the same time, don’t be a "weekend hero" and suddenly go to exercise. Exercise should be gradual, gradually increase the amount, and the weekly increase should not exceed 10%. Don’t be a "weekend hero" and suddenly exercise.

a kind of traditional Chinese shadowboxing (tai chi chuan)

Risk of knee injury: ★★☆☆☆

Some people think that Tai Ji Chuan’s squats like "Ma Bu" will put too much pressure on his knees.

As a matter of fact, many scientific studies actually show that playing Tai Ji Chuan twice a week can not only protect the knee but also relieve psychological stress.

Key points of Tai Chi without hurting knees:

You need to warm up before playing Tai Ji Chuan.

Don’t squat too much in pursuit of beautiful movements.

You need to stand on one foot or rotate your body slowly.

Once knee discomfort occurs, don’t endure it and stop immediately.

Ride a bike

Risk of knee injury: ★★☆☆☆

When riding, people’s weight mainly presses on the seat cushion, and the force on the knees is relatively small, which also helps to strengthen the muscles around the joints.

However, if you ride too hard or take some wrong riding posture habits, it will also have certain health risks to your knees.

Key points of cycling without hurting knees:

Adjust the height of the seat to: when the foot steps on the lowest position, the knee joint slightly bends about 170.

Hold your head high while riding, keeping your knees and toes facing forward.

Keep riding at a constant speed, and don’t suddenly increase the speed by force.

Exert your thigh, and step on the pedal with the first third of the sole of your foot.

Tip: If there is obvious discomfort in front of the knee joint when riding a bicycle, it is necessary to minimize such activities.

Click on the picture below to see the details of riding a bike correctly.

swim

Risk of knee injury: ★☆☆☆☆☆

When swimming, the body is basically parallel to the water surface, and the knee joint is basically free of load, so it is best for the knee joint.

However, patients with knee injuries should avoid breaststroke as much as possible. Water resistance will impact the knee joint when breaststroke kicks, and long-term high-intensity breaststroke may aggravate the symptoms.

Tip: Freestyle and backstroke are more recommended to protect the knee joint.

Can knee pads help maintain your knees?

Many functional knee pads only sell a conceptual thing, and one thing that all functional knee pads do is actually heating. Keeping warm is a very important part of knee joint maintenance, because the joint itself is afraid of wet and cold.

Therefore, normal knee pads have two main functions.

1. Keep the knee warm

2. Increase the stability of joints.

If the functional kneepad is non-invasive to the knee joint, it is actually no problem to use. However, some people may be allergic to drugs for knee pads, so they need to be careful.

Knee pads used in osteoarthritis, the most important function is to keep warm;

The main function of knee pads used in traumatic arthritis is to provide extra stability for joints;

Primary synovitis and gouty arthritis may not be particularly important for the use of knee pads.

point out

1. Don’t rely too much on knee pads.

Long-term dependence will lead to muscle atrophy inside the joint, which is actually more unfavorable for the protection of the whole joint.

Especially for relatively young people, we must not rely too much on knee pads, but should make muscle strength stronger.

2, the temperature must not be too high, not too long.

3. Observe whether there is drug allergy in time.

4. Don’t wear too tight knee pads.

Too tight kneepads can easily lead to blood stasis, resulting in poor blood return, which may lead to thrombotic diseases of lower limbs, which may even be fatal.

Guide to the risk of knee injury in sports

Risk of knee injury by climbing mountains and stairs: ★★★★★★★

Risk of knee injury by skipping rope: ★★★☆☆☆

Risk of knee injury due to jogging: ★★☆☆☆

Risk of knee injury in Tai Ji Chuan: ★★☆☆☆.

Risk of knee injury by cycling: ★★☆☆☆

Risk of knee injury in swimming: ★☆☆☆☆☆

Source: CCTV life circle

Culture is not knowledge, culture is the pursuit of beauty! Expressed in more concise words, it can be abbreviated as: culture is the sum of language and words.

"Culture" can be expressed in four sentences:

1. Self-cultivation rooted in the heart:

Self-cultivation can be divided into two main contents. First, knowledge literacy is reflected in a person’s IQ; The second is humanistic accomplishment, which is reflected in a person’s emotional intelligence. Therefore, self-cultivation is improved through learning and cultivation the day after tomorrow, so as to achieve the realm of internalization in the heart, externalization in behavior, and integration of knowledge and practice.

2, don’t need to remind others consciously:

Self-awareness means that you know something and take the initiative to do it. The difference between humans and animals is that there are two lives: one is the life of the body; The second is the life of culture. Take away the "culture" tendon, people are just ordinary animals, and people are conscious.

3. Freedom on the premise of constraint:

Freedom is self-determined, without restrictions and constraints. The freedom advocated is a kind of freedom that is harmless to others in society, and it is based on goodness and justice. We should realize that freedom not only means the desire to be liberated from bondage, but also means the responsibility to respect the value of others’ existence. Only within reasonable limits and by using reasonable means can we achieve real freedom.

4. Kindness for others:

The first paragraph of the classic of Chinese studies "San Zi Jing" says: "beginning of life, human nature is good. Sex is similar and learning is far away. " This means that when people are born, their nature is good and their temperament is very similar. But with the different changes and influences of their living environment, everyone’s habits will be different.

If you treat others well, others will treat you well. If you are full of kindness, you can warm the people around you. In daily life and work, it is necessary to be helpful and kind to others, unite with leaders and colleagues, actively create a relaxed and pleasant working atmosphere, and construct harmonious interpersonal relationships.

According to the traditional concept of human beings, culture is a social phenomenon, which is the product of long-term human creation, but also a historical phenomenon and the accumulation of human society and history. To be exact, culture is the way of thinking, values, lifestyle, behavior norms, art and culture, science and technology of a country or a nation that can be passed down and spread. It is a universally recognized ideology that can be passed down for human communication and a sublimation of perceptual knowledge and experience of the objective world.

Culture is the total system of symbols (mainly words, supplemented by images) and sounds (mainly language, supplemented by phonology and notes) created and commonly recognized and used by people in the process of constantly knowing and transforming themselves and nature.

Culture, the afterlife of this life, is the behavior of some people to carry out their life beliefs. When the noblest place in a person’s temperament blooms in all aspects of life, when a person’s aesthetic taste is enough to give life a kind of elegance and flavor-that is culture.

Culture is the best nourishment.

Everything in the world is supported.

The grass and trees are in the wild, and the rain and dew are born to help; Body and mind are in the study, and kissing ink can nourish them.

If the study is a person’s spiritual sanctuary, then the long thing in the study is the pearl in this sanctuary.

Ancestors said: when writing, you can raise pens, when grinding, you can raise ink, when washing, you can raise paper.

When the library is in the library, the supplies of the study room can be spent over the years; If you are always close to things, your body and mind will be spiritually influenced.

Culture is the best nourishment.

The nourishment of life comes from the pursuit of life interest, but also from the immersion of long things.

In the rooms of ancient literati in China, there must be pens, ink, paper and inkstone for the case, and piano, chess, books and paintings for the lent. Besides, there are all kinds of elegant things.

Nowadays, when we see these old things in the study from a distance, we can hear the excited voices of the ancients and see their sincere faces as long as we understand them with our hearts.

They camped in the study, or played in Tibet, or lived in seclusion … and nourished by culture, which built a bright world for us.

Playing with Wen Zang can nourish the heart.

Culture is formed over time, and the way to hide and play can nourish the heart.

Elegance and vulgarity are often the first criterion in the way literati look at artifacts.

Whenever you see a thing, you should judge its advantages and disadvantages, define the realm of elegance with the mind of a gentleman, and create a true rhyme and taste that conforms to the literati’s aesthetics.

There are many beautiful things in the room, and the world is better than Taoyuan.

In the name of the post, the truth is orderly, and Mo Chi is fragrant; Appreciate the boxing stone, clear the supply, exquisite smoke and clouds, and the muscles and bones are towering;

Product green grass and bamboo, elegant room, case into a secluded field; Virtual Lu Qing Kuang, sitting in the dust to release concerns, elegant things Ming Zhen Yun;

Open-minded, all wonderful; Xuan Lang in Zhang’s room is natural and unrestrained.

By writing things in style, you can nourish your spirit.

Gewu, when there is an aesthetic seed, nourishes itself from the traditional scale.

Ancestors said: the piano is silent, the staff is light, the cup is elegant, the bamboo is cold, and the stone is impressive …

In addition to leisure and entertainment, there is a poetic charm in the study, which makes people physically and mentally idle.

If you do what you want from your heart, you will be a man, and you will not be detained, but you will not go beyond the rules.

It is the highest state to understand the nature within a certain statute, conform to the rules and set an example for future generations.

From things and devices, from devices and people, we can make our conscience in things and nourish our true qi in edification.

Living in seclusion with literature can raise your ambition.

China’s philosophy is a philosophy of leisure, and living in leisure can raise one’s ambition.

As the poet Ni Si said:

Reading books on righteousness and reasoning, learning the words of calligraphy and calligraphy, sitting quietly, talking with friends, drinking half drunk, watering flowers and planting bamboo, listening to the piano and playing with cranes, burning incense and frying tea, and going to the city to watch the mountains mean playing chess. Apart from the above, although I have other pleasures, it is not easy for me.

Life is leisure, and long things are companions. Whether reading, posting, burning incense, playing the piano, playing chess or drinking tea, long things in the study are the carriers.

Getting a period of leisure and happiness constitutes a brilliant aesthetic philosophy, which affects the world’s pursuit of leisure and elegance.

Today, we are far away from the luxury of spirit, and today’s dignitaries and rich people do not have such a life, because cultural life is not only material wealth, but also spiritual nobility, which is a real affair.

In this sense, the pursuit of beauty with culture is to immerse beauty in life.

If life is a flower, then culture is soil. May you and I live in peace in our daily life and drop the seeds of beauty and bloom the most wonderful flower.

END

The word "culture": its appearance in China can be traced back to the Western Han Dynasty. "Culture" is not only a system of civilizing and educating, but also a system of rites and music. This understanding has been maintained in our country until modern times. The meaning of the word "culture" that we use today is obviously different from that of ancient times. It was introduced from the west through Japanese translation at the end of the 19th century. At that time, there was no definition of the word, and people only used the word "culture" according to their own understanding and needs. According to analysis, there were about three meanings at that time; First, it is synonymous with "civilization"; Second, in a broad sense, it includes spiritual and "civilization" contents; Three, narrow sense, refers to the spiritual content. To this day. The meaning of culture is broader; There are also many people who agree that culture refers to "ideology", and everything outside politics and economy is among them; Others make a broader understanding that everything created by human beings (that is, the integration of material civilization and spiritual civilization) is culture; Besides, some people have other explanations.

In view of the fact that scholars at home and abroad have different opinions on the concept of "culture", it has been suggested that the word "culture" may be a vague concept naturally, and it is difficult to make a clear and complete definition. Instead of pursuing a simple and precise definition, people should determine a flexible range from the perspective of set.

Although there are many definitions of culture, I personally think that it should be the same in many aspects, and we can roughly summarize it into the following three aspects;

First, ideology (also known as ideology) means people’s world outlook, way of thinking, religious beliefs, psychological characteristics, values, moral standards, cognitive ability and so on.

Second, the way of life, that is, people’s attitude towards their food, clothing, housing and transportation, marriage, birth, illness, family life and social production activities, and some forms taken in these aspects.

Third, spiritual materialized products, that is, from the formal point of view, are some material things, but through the material form, they can reflect people’s differences and changes in ideas.

From the above three parts, the scope of culture is basically outlined. But we should pay attention to: the word culture; It should be an organic whole, which is not only the simple addition of the contents of these three parts, but also the mutual influence and premise of the contents of these three parts, and should be organically combined according to a specific sequence.

Culture is the lifeblood of a nation.

China’s traditional culture is profound and has a long history.

What are the top ten famous teas and four famous embroideries?

Who are the Eight Masters in Tang and Song Dynasties and the Eight Immortals in Drinking?

Where do the three mountains and the five mountains refer to?
The People’s Daily has compiled 55 common knowledge of China culture, and those that can’t be answered should be collected quickly.

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Culture is the lifeblood of a nation.

For thousands of years, precious cultural heritage has been handed down, which has cultivated the interest and character of China people.

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Source: People’s Daily Weibo

Editor: Hang Yifan

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