西安夜生活网论坛,西安耍耍网,西安品茶网 – 第 2 页

Don’t buy the ＂back from the dead＂ flowers that are screened by friends!

　　Cctv newsRecently, in the circle of friends and the homepages of various social media, many people are drying a flower that can bring life back to life.

　　A dead branch without roots.

　　Soak it in water for a few days and it will bloom again.

　　This kind of dry branch is called "Rhododendron in Daxinganling"

　　Is it really that amazing?

　　The flowers that came back to life in the circle of friends were warned to destroy the ecological environment.

　　The WeChat circle of friends of Ms. Liu, a native of Hangzhou, was screened by this magical "dead wood in spring": "Many people are taking pictures. I also bought one to 20 yuan, which is much cheaper than the flowers in the flower shop. "

　　After receiving the dead branch, Ms. Liu put it in the water. In less than two weeks, the branch bloomed with pink and purple flowers, which had a literary beauty. In another week, the flowers have fallen, and young leaves are beginning to come out from the branches, which is a different scenery.

　　She exposed this moment of witnessing "miracle" to a circle of friends, but received a dissuasion message from a friend: "Don’t buy this again! This dead branch is broken from wild rhododendron, which will destroy the ecological environment! "

　　She is not the only one who received dissuasion messages in the circle of friends. Weibo netizen "Xicheng Green" also said that he was told not to buy this kind of flowers after drying them in a circle of friends.

　　Is this true or not? Will it really damage the environment to buy azaleas and raise them at home?

　　A bunch of online shops in 20 yuan sell wild rhododendrons.

　　The reporter browsed a shopping website, and the pictures below the keywords "Rhododendron hydroponics, dry branches, soaked flowers, dry wood and dead trees meet spring flowers" are all Rhododendron flowers in Xing ‘an, and the store specially added the words "artificial cultivation" and "home planting". Only a few stores still write "dry branches of rhododendron in Xing ‘an" in the product description.

　　But the commodity maps are all similar, with pink and purple flowers on the dead branches. People who know a little about flowers can recognize this as azaleas at a glance.

　　According to the commodity details of these azaleas, dead branches can bloom in about 7-10 days after being inserted in water and changed once every 3-4 days. If you don’t want it to open for a while, just put the dead branches in the refrigerator for preservation.

　　Some stores focus on "wild", and in the product details, they have exposed many photos of flowers and trees in the snowy mountains, as if to prove to buyers that these branches were indeed picked from the mountains.

　　According to the customer service of an online shop, these dead branches were imported from the local flower and bird market. People in the market told them that it was wild in the mountains of Daxinganling. As for whether it was true or not, the seller was not sure himself.

　　Among these shops selling dead branches, the one with the highest sales volume sells 7,787 orders a month, and the price is 40 sticks in a bunch of 23 yuan. The more you buy, the lower the unit price. In this way, the number of dead branches to be sold every month is not a small number.

　　Flowers can bring back the dead? It’s not that amazing!

　　Why do dead branches that look lifeless bloom quickly when inserted in water? Experts say that these dead branches are actually not dead at all, just "hibernating"!

　　This kind of rhododendron, which grows in Daxing ‘anling and Xiaoxing ‘anling areas, is scientifically called Rhododendron Xing ‘an, also known as Tartar Fragrant, and is the city flower of Yichun City, Heilongjiang Province. It belongs to semi-green shrub, leaves fall and sleep in winter, waiting for the next spring to bloom again. In the dormant period, the branches are broken down, inserted into the water, and then placed in a warm room. The temperature and moisture have reached the conditions for flowering, and the buds on the dead branches naturally bloom.

　　This "magical" process can be done not only by cuckoo, but also by branches such as peach blossom and winter jasmine. Therefore, the so-called "coming back to life" is not a "miracle", but just a gimmick of the merchants.

　　Expert: wanton logging will destroy the ecological balance.

　　However, because of the "magic" stunt, Rhododendron Xing ‘an has been cut down a lot.

　　In fact, in 2017, Huzhong District, Daxing ‘anling, Heilongjiang Province issued the Notice on Prohibiting the Collection and Sale of Rhododendron Xing ‘an, because the growth of wild Rhododendron Xing ‘an is slow, only 10 cm long a year, and the rampant deforestation has seriously affected the ecological environment.

　　 According to experts, the natural environment is a house with balanced distribution. If a large number of azaleas are cut, its ability to absorb sunlight and water will be weakened. This energy will be taken up by other plants, and the cuckoo will only become weaker and weaker.

　　In addition, as a woody plant, Rhododendron itself grows slowly, and it takes 5-6 years from sowing to first flowering; If it grows into a branch that can be broken by dozens of centimeters, it is at least twenty or thirty years old. If you want to make it grow back, it will not be so fast.

　　Appeal: Don’t pick and buy wild plants.

　　Although the local government has taken measures, rhododendrons in Xing ‘an will still be cut and sold in winter.

　　Beauty should not be at the expense of injury. I appeal to everyone: don’t buy rhododendron in Xing ‘an, and don’t pick wild plants at will. Let these plants live in their original homes!

　　Source: Sichuan Daily WeChat WeChat official account

China FAW Yancheng Branch put into production, the first model Pentium pony was officially mass-produced.

On May 17th, China FAW Yancheng Branch was put into production and the first car mass production ceremony was officially held. Pentium pony, the first model born in the new factory, was mass-produced and shipped to its dealers all over the country. With the mass production of the first car, the new energy factory of China FAW Yancheng Branch was officially unveiled for the first time, which opened the Pentium brand of China FAW and accelerated the development of new energy industry layout.

Relevant responsible persons from Yancheng Municipal Party Committee and Municipal Government, China FAW, FAW Pentium, Yancheng Economic and Technological Development Zone and Jiangsu yueda Group came to the scene to witness this important moment. The main responsible comrades of Yancheng Municipal Party Committee and Municipal Government, Wang Guoqiang, director and deputy secretary of the Party Committee of China FAW Group Co., Ltd., Yang Chang, chairman and secretary of the Party Committee of FAW Pentium Automobile Co., Ltd., and Kong Dejun, general manager and deputy secretary of the Party Committee of FAW Pentium Automobile Co., Ltd. jointly launched the commissioning and first car mass production ceremony of China FAW Yancheng Branch.

Wang Guoqiang said in his speech that as an important part of the strategic layout of China FAW’s new energy industrial chain, the commissioning of China FAW Yancheng Base greatly supplemented the production capacity layout of China FAW’s independent new energy vehicles, marking a key step in the strategic layout of China FAW’s new energy. As the first new energy strategic model of Pentium brand, Pentium Pony will further enhance the competitiveness and influence of Pentium in the new energy market, and bring more scene and personalized car experience to consumers.

As a new energy passenger car production base established by China FAW, Yancheng Branch will undertake the production tasks of various new energy main models of Pentium brand in the future, which will become an important guarantee to support the development of China FAW’s own brand and promote the transformation of FAW Pentium’s new energy. With the accelerated transformation, FAW Pentium will launch seven new energy vehicles, covering pure electric, plug-in hybrid, extended range power and other types of products.

Pentium pony is the first product of FAW Pentium’s new energy transformation, which will be officially launched on May 28th. Since the pre-sale, it has become the new "budding master" of the micro pure electric travel market with the five good experiences of "good-looking, fun, easy to open, economical and safe".

In addition, the brand-new new energy vehicle of Pentium brand, code-named E311, also made its debut at the event. This vehicle is an all-electric SUV with high price-performance ratio and high quality-price ratio, which will bring consumers a brand-new travel experience with cutting-edge technology.

The commissioning of China FAW Yancheng Branch will bring sufficient capacity support and quality assurance for the planning and landing of new energy products of FAW Pentium. By the end of this year, China FAW Yancheng Branch will invest and transform 30 production lines one after another, reaching the annual output of 100,000 vehicles, and the production capacity will exceed 150,000 vehicles by the end of 2025, making it an intelligent, green and efficient modern manufacturing enterprise. In terms of manufacturing quality, it can realize 100% automation, high precision and zero error in body welding, and 100% data upload in final assembly can realize traceability of vehicle quality. In terms of quality inspection, the laser radar with a measurement accuracy finer than the hair ensures the uniform and beautiful gap between vehicles, and the detection intensity of rain around 360 degrees reaches more than twice the national standard. Through more than 16 kinds of complex road conditions tests, 19 rigorous tests in 4 categories are carried out in the whole process, which reflects the quality standards of China FAW.

From the official mass production of Pentium pony to the surprise appearance of E311, and then to the high standard landing of Yancheng New Energy Factory, FAW Pentium has entered a new round of strategic transformation. Relying on more than 70 years’ accumulation of China FAW and Yancheng’s complete industrial supporting facilities, FAW Pentium will reinforce its advantages in the Yangtze River Delta market, which is the core of new energy vehicle consumption, showing a new pattern of coordinated layout of North-South bases and common development of North-South markets.

Be alert! These bacteria may cause diseases such as sepsis and meningitis.

　　In summer, the weather is hot, and the growth and reproduction of bacteria are increasingly active. The so-called "illness from the mouth", when cooking dishes, do you think that there may be "dangerous elements" hidden in the kitchen? What diseases will they cause?

　　What are the common pathogens in the kitchen?

　　1. Escherichia coli

　　● Can cause diseases: sepsis, infective endocarditis, liver abscess, peritonitis, pelvic inflammatory disease and urinary system infection.

　　● Symptoms after infection: abdominal pain, diarrhea, fever, nausea, dizziness, vomiting and shock.

　　E. coli is harmless to human body under normal circumstances, but it is easy to cause disease once it is overdosed and human immunity is weak.

　　● E.coli has low requirements for living conditions, and it will grow in the kitchen where there is a little water or food residue, such as chopping boards, rags and sinks that have not been dried. It is warm and humid in summer, and the growth and reproduction of Escherichia coli is very fast.

　　● Escherichia coli is not resistant to high temperature. Generally, it can be killed in plain areas by boiling at 100℃ for about 15 minutes to 30 minutes. When the temperature is about 4℃, the growth rate of Escherichia coli slows down; When the temperature is below MINUS 20℃, it enters a dormant state and stops breeding.

　　2. Listeria

　　● Can cause diseases: fetal arrest, abortion, meningitis.

　　● Symptoms after infection: abdominal pain, diarrhea, fever, nausea, dizziness, vomiting and shock.

　　Listeria is known as the "refrigerator killer" and can still grow at 4℃. Milk, yogurt, eggs, meat, cold drinks and vegetables in the refrigerator may be parasitic.

　　Low high temperature environment is easy to kill Listeria, and refrigerated food can be sterilized by boiling and heating. In addition, regular cleaning and disinfection of the refrigerator will help to eliminate Listeria.

　　3. Vibrio parahaemolyticus

　　● Can cause diseases: gastroenteritis, acute renal failure and wound infection.

　　● Post-infection symptoms: severe abdominal pain, diarrhea, fever, nausea, dizziness, vomiting and shock may occur.

　　● Vibrio parahaemolyticus mainly lives in seafood such as fish, shrimp, crab, shellfish and seaweed. Eating food containing this bacterium or being scratched by food containing this bacterium can cause infection.

　　● Vibrio parahaemolyticus can be killed by heating at high temperature. If sterilized with boiling water, it is recommended to boil for more than 15 minutes.

　　4. Salmonella

　　● Can cause diseases: bacteremia, septicemia, gastroenteritis, osteomyelitis, meningitis, vascular implant infection and bone and joint infection.

　　● Post-infection symptoms: persistent high fever, abdominal pain, diarrhea, nausea, dizziness, vomiting and shock may occur.

　　Salmonella is easy to appear in kitchen knives, chopping boards, vegetables, fruits, eggs, chicken legs and other foods.

　　Salmonella can be killed by heating at high temperature.

　　5. Staphylococcus aureus

　　● Can cause diseases: meningitis, otitis media, septicemia, pneumonia, folliculitis, wound infection and paronychia.

　　● Post-infection symptoms: skin pustules, abdominal pain, diarrhea, fever, vomiting, dizziness, etc.

　　● It is often parasitic on human and animal skin, nasal cavity, throat, stomach and other tissues, and is also found in air and sewage. When eating food contaminated by the bacteria, or when the body wound comes into contact with pollution sources, it can cause infection.

　　Staphylococcus aureus has a certain tolerance to high temperature, and it can be killed in a high temperature environment above 80℃ for 30 minutes. 70% ethanol can also be used for disinfection.

　　The doctor reminded that the symptoms caused by these pathogenic bacteria when invading the human body have many similarities, such as diarrhea, abdominal pain, fever, etc. Therefore, once an infection occurs, it is necessary to go to the hospital for examination and test to accurately identify which kind of bacteria is caused, and then take medicine for the symptoms.

　　Transferred from CCTV Finance

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Baojun responded to Yue brake failure, and software BUG caused brake degradation.

Recently, some car owners posted on social platforms that the brakes of the 2023 smart driving version were abnormal, which attracted the attention of netizens.

On January 4th, Baojun Automobile issued a statement in the official Weibo to respond to the relevant situation. The statement said: "This Yueye incident is not the’ brake failure’ described by the network, but the existence of some vehicles.Software BUG, resulting in the brake assist degradation. This part of the vehicle will enter the speed limit protection state when it is reminded by the indicator light when it is started. "

"After receiving relevant feedback, we intervened in the first time and solved the user’s vehicle problem. Please feel free to use it." Baojun Automobile said, "Without knowing the facts, the relevant media described the words such as’ brake failure’ as inaccurate."

Previously, many car owners reported on social media that the brakes of Baojun Yueye had failed, mainly focusing on the 2023 Baojun Yueye Flagship Edition and Zhizun Edition. The vehicle reported eps code, and the "yellow turtle" fault light appeared on the dashboard. The owner stepped down.brake pedalThe rear vehicle cannot slow down.

A car owner described the problem as follows: "When I was driving on the morning of December 31, 2024, I found that the car slipped after the car was powered on, and there was no response when I stepped on the brakes. I started the car several times without power, and the problem still existed. At the same time, the vehicle dashboard reported the EBS fault light and the drive system fault light, so I called for rescue and dragged the car to the 4s shop for maintenance. So far, the cause of the vehicle problem and the after-sales plan have not been clearly answered."

Stephy’s American-born daughter came back to take a selfie, showing good looks and recovering quickly.

Stephy takes selfies.

Weibo screenshot

　　 1905 movie network news Recently, Stephy Nathan Scott Lee showed up at Beijing Capital Airport with his daughter, which proved that the whole family had returned to Beijing. At 19: 31 on April 8th, Stephy Weibo took a selfie. In the photo, Stephy took a selfie with a camera in one hand and made an "OK" gesture in the other. Different from the past, the neat short hair has turned into a long hair, which is more charming, and the skin is white and smooth. Postpartum recovery can be called rapid.

　　 After the exposure of this Weibo, netizens sent blessings one after another, and some netizens ridiculed: "Does this gesture mean a baby brain for three years?"

　　 It is reported that in August 2013, Stephy and American Han Xing Nathan Scott Lee were photographed by the media returning to the apartment together after a barbecue in the middle of the night, and their love affair was open. On August 25th, 2014, Stephy officially announced the wedding news through Weibo, and took a photo with her fiance Nathan Scott Lee. On September 8th, Stephy and Nathan Scott Lee formally married at Caesar Palace Hotel in Las Vegas, USA. On January 17th, 2015, Stephy had a baby girl in Hoag Beach, California. She was nicknamed "Lucky" and weighed 3145g at birth.

Some lesions in the annual physical examination can’t be found？ Expert： Physical examination needs a ＂sense of design＂

　　Medical Guidance/Professor Wang Fangjun from the First Affiliated Hospital of Guangzhou University of Chinese Medicine

　　No matter on the Internet or in real life, I can always hear people asking similar questions angrily and helplessly: one of my relatives and friends has a physical examination every year, and no problems have been found. Who knows that lung cancer has been found recently, or it is in the advanced stage! Therefore, people often ask bluntly: What is the use of physical examination? Why are some diseases still undetected? The reporter interviewed Professor Wang Fangjun from the First Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine.

　　Text, Figure/Guangzhou Daily All-Media Reporter Weng Shuxian Correspondent Fang Ning and Zhang Qiuxia

　　Don’t wait for the body to "hold on" before doing the examination.

　　"Physical examination is of course useful! The use is not small! " Wang Fangjun explained that the so-called physical examination is the abbreviation of "physical examination", which is a process in which doctors use their own senses, auxiliary examination instruments and experimental equipment to collect objective information on the health of patients or normal people and conduct health assessment.

　　In the past, many people went to the hospital after they felt obvious symptoms of the disease, or even "unbearable". As everyone knows, many diseases have no discomfort in the early or even the middle stage, especially cancer. When the symptoms are obvious, they often have developed to a serious stage, and the treatment effect is difficult to guarantee, even for life. Physical examination is a process in which people take the initiative to evaluate the health status of their bodies. Without waiting for the body to send out an obvious "unbearable" signal, they can find hidden dangers of diseases as early as possible and block the progress of diseases in time.

　　Why didn’t the physical examination find early lesions?

　　Why do you insist on physical examination every year, or are some early lesions not found in time? What do you think about this problem that puzzles many people?

　　"We should be clear about the fact that the health examination of normal people is not the same as the disease examination of patients who go to the hospital to see a doctor!" Wang Fangjun said that the examination of diseases is clear-cut, targeted, accurate and meticulous, and will make a relatively accurate diagnosis of diseases in a "positioning, quantitative, qualitative and regular" manner; The physical examination is only a screening process, and we don’t know whether the body is sick or not, which is equivalent to "casting a net". Therefore, we usually only choose some simple and cheap items that can reflect important organ functions.

　　If we sort out these "casting a net" health examination items, he thinks they can be roughly divided into three categories:

　　1. General examination: It belongs to the most basic examination items, and usually includes blood pressure measurement, heart and lung examination, electrocardiogram examination, palpation of liver, gallbladder, spleen and lymph nodes, etc., so as to roughly judge whether there are diseases of organs such as hypertension, heart disease, lung disease and liver and gallbladder.

　　2. Laboratory examination: generally including blood analysis (blood routine), urine routine, liver and kidney function, blood lipid analysis, tumor markers and thyroid function, to judge whether there are anemia, infection, hepatitis, nephritis, hyperlipidemia, tumor, leukemia and hyperthyroidism.

　　3. Imaging examination: it is essential in the current physical examination, which usually includes chest X-ray photos, B-ultrasound (liver, gallbladder, spleen, kidney, thyroid, etc.) and other items.

　　"Whether you apply for a medical examination on your own initiative or a medical examination organized by your work unit, you only choose a few inspection items to do." Wang Fangjun said that even "people who are not poor in money" have designed an expensive "luxury medical examination package" according to their own requirements, and in fact it is impossible to include all kinds of examination items in the hospital. Therefore, in theory, it is impossible for physical examination to "exhaust all items", and there will always be some early lesions that will be missed. Some people only check a few small items, and they are not necessarily targeted. Therefore, some early lesions have failed to be detected.

　　Tips: Optimize physical examination items to improve inspection efficiency.

　　So, how to improve the effect of physical examination more pertinently?

　　"In fact, the physical examination is also ‘ Technical work ’ , also need to have ‘ Sense of design ’ 。” Wang Fangjun analyzed that the above-mentioned physical examination items can be regarded as the preferred basic items, and it is recommended that all the subjects can be seriously examined. In addition, some targeted projects should be optimized according to the characteristics of age, gender and occupation, so as to improve the inspection efficiency. And how to choose the best, it is suggested that we can communicate with the doctor appropriately and design the best physical examination plan with the help of the doctor.

　　For example, he said that people over the age of 40 should appropriately increase items such as bladder, prostate, uterus and accessories when doing basic B-ultrasound (liver, gallbladder, spleen, kidney, thyroid, etc.) during physical examination; Women at risk of breast cancer should increase mammography and breast ultrasound; People at risk of heart disease can add items such as cardiac color Doppler ultrasound on the basis of ECG. If you are an older "smoker" or a patient with other high-risk factors of lung cancer, you should "upgrade" the chest X-ray photos to a low-dose CT examination of the chest to avoid missing the diagnosis of early lung cancer.

　　If some parts of the body are obviously uncomfortable, that is to say, some symptoms or signs have appeared, then the goal of the examination is more clear. Wang Fangjun reminded that the physical examination at this time may wish to refer to the contents of "disease examination" and ask the specialist to "tailor-made" the examination items, so as not to miss the early or even middle and late lesions.

Shenzhen CDC expert： If you get A stream, you may be infected with B stream again.

　　According to the report of the National Health and Wellness Commission, at present, influenza is still the main respiratory disease, and the proportion of influenza B virus in southern provinces has continued to rise in the past three weeks. What’s the difference between stream B and stream A? On January 15th, Shenzhen CDC experts interpreted it.

　　According to Shenzhen CDC experts, the seasonal epidemic of influenza is mainly caused by influenza A and B viruses. There is little difference between the symptoms of influenza A and influenza B, so it is difficult to distinguish them according to the symptoms. It is still necessary to go to the hospital and cooperate with tests to diagnose them. Whether it’s A stream or B stream, their main manifestations are systemic symptoms, such as fever and muscle aches all over, while respiratory symptoms such as runny nose and cough will be lighter. Fever is persistent, and it often burns again after taking antipyretics for a few hours.

　　Disease control experts believe that this epidemic season has been infected with influenza A, and it is also possible to be infected with influenza B. Influenza A and B are two different subtypes of influenza, and they do not have cross-immune mechanism. After getting influenza A or B, if the patient’s constitution is relatively weak, it is still possible to be infected with another subtype of influenza virus. Shenzhen disease control experts do not recommend that citizens use antibiotics without authorization when they have a fever, or they should follow the doctor’s advice and treat them.

　　How to prevent influenza? Shenzhen CDC experts said that the influenza virus is highly contagious, and people are generally susceptible. People can get flu vaccine and do personal protection. Members of the public can be vaccinated against influenza before the start of the influenza epidemic season and at any time during the epidemic period. Free flu vaccine in Shenzhen is currently provided to primary and secondary school students and elderly people aged 60 and above (elderly people require Shenzhen household registration or purchase Shenzhen medical insurance). In addition, the public should also pay attention to personal protection such as frequent hand washing, frequent ventilation, wearing a mask, and covering your mouth and nose when coughing or sneezing to reduce the risk of infection. (Chief reporter Luo Liqiong correspondent Shen CDC)

Science popularization： five kinds of particles that ＂don’t exist＂ but can change the world

　　Particles refer to the smallest component of matter that can exist in a free state, including electrons and neutrons. The cornerstone of modern physics — — The physical standard model is essentially a "family tree" of a particle family, and its members are familiar to everyone. The Higgs boson, which finally revealed its beauty, was sought after by scientists from all walks of life as soon as it came out.

　　But there is an equally important class of particles that nobody cares about Of course, this is understandable, because these "quasi-particles" do not really exist, but their unique physical properties are enough to change modern science and technology. In a recent report, the British magazine New Scientist listed five quasi-particles that "don’t exist" but can change the face of the world.

　　Phonon: electric cowboy

　　In 2012, the Large Hadron Collider (LHC) at CERN discovered the Higgs boson, which is the mass source of other particles. So far, all 62 kinds of elementary particles have been discovered, and the standard model of particle physics has been perfected.

　　But without phonon, all this would not have happened.

　　The concept of phonon is developed in the process of studying lattice vibration. Li Baowen, director of the Center for Phononics and Thermal Energy Science of Tongji University, once explained that phonons are not real particles, but quasi-particles, which are quantized lattice vibrations. It is called a phonon because the essence of "sound" is the "vibration" of an object. In fact, the Greek word for phonon means sound.

　　The name phonon was first put forward by Igor Tamm, a physicist in the former Soviet Union, in 1932. He pointed out that just as light corresponds to electrons, sound waves can be associated with some particles we call "phonons". In solids, especially in semiconductors and insulators, "heat" is conducted through lattice vibration, that is, "phonons" are carriers of heat.

　　At room temperature, phonons are quasi-particles, and the heat conduction of solid materials is mainly realized by phonons. But at extremely low temperature, these quasi-particles "incarnate" into a group of "cowboys", driving away the "cattle" composed of electrons. These electrons act uniformly, and their resistance is almost zero, which is the principle of low temperature superconductivity.

　　It is the huge electromagnetic field created by superconducting magnets that makes protons bend in the large circular orbit of LHC. In the magnetic resonance imaging (MRI) scanner, these superconducting magnets "transform" as a command, guiding oxygen atoms in human tissues to "dance" and releasing traceable radio signals. In addition, phonons also play an important role in the field of thermoelectric materials. These thermoelectric materials can convert thermal energy into electrical energy, and it is also expected to realize scientists’ dream of reusing waste heat from automobile engines to supply power for electronic products.

　　Magneton: the king of spin

　　Since Tam put forward the concept of "phonon", scientists have gradually found many such quasi-particles in solids. Another such particle originates from spin, a quantum property that is the basis of magnetism. Spin is like an arrow on an atom, pointing south or north; When all spins in matter are aligned, a magnetic field appears. However, when this spin state is constantly reversed, a wave effect is created, which scientists call "magnon".

　　Ordinary computers and smart phones need electricity to store information, but the information of equipment power failure cannot be obtained. If a magnon is used, the information storage will depend entirely on the magnetic field without electricity, which is called Spintronics. The advantage of this method is that it consumes little power — — Excessive power consumption is one of the main problems encountered in miniaturization of transistor chips. If the magnetic oscillator is controlled by electromagnetic waves, the computer can completely get rid of the shackles of wires and electricity.

　　Exciton: the secret weapon of plants

　　The earth gets more energy from the sun in an hour than all mankind consumes in a year. Plants play the role of energy catchers, and excitons are the "secret weapons" for plants to perform this task.

　　In any substance, electrons exist in different energy levels. When a photon strikes the surface of an object, it will excite electrons to a higher energy level, leaving a hole. Electrons are negatively charged and holes are positively charged. Under certain conditions, the Coulomb attraction between them will bind them together in space, so the complex formed is called excitons.

　　The leaves of plants contain light-trapping proteins, and the electrons in the light-trapping proteins will be excited to absorb photons and leave their positions, leaving a hole, electrons — Excitons formed by hole pairs will float around the photosynthesis production line of plants.

　　When excitons arrive at specific positions where they are needed, electrons recombine with holes and release energy, which plants use to decompose water into hydrogen and oxygen.

　　This photosynthesis is the root of life on earth, and human beings have been looking forward to simulating this reaction in solar cells. In 2013, researchers at the Massachusetts Institute of Technology found a way to "photograph" excitons directly, which took a key step towards the ultimate goal.

　　According to the online edition of Science magazine in 2009, Leonid Butov, a physics professor at the University of California, San Diego, and his colleagues have made several transistors based on excitons. These transistors are expected to become the basic modules of new computers, and the circuits assembled by them will become the first computing device using excitons in the world.

　　Mayorana Fermion: Quantum Hero

　　If you want to have a real multi-process computer, you can turn to a quantum computer for help. The quantum computer, which is still in its infancy, makes use of subtle and uncertain quantum states and can give multiple solutions to the same problem at the same time. As long as the external environment does not disturb the "magic" of the quantum computer, it can run stably.

　　Majorana quasiparticles can provide "qubits" for quantum operations, which makes quantum computers more powerful.

　　The information in an ordinary computer is stored in "bits", and each bit is coded as 0 or 1; Information bits in a quantum computer can exist as 0 and 1 at the same time, but this superposition state is very fragile. For this reason, physicists have been looking for ways to make qubits more stable.

　　In 1930s, Italian theoretical physicist ettore majorana predicted that there must be a particle, which is the same as its antiparticle. The concept of "majorana particle" was born. It has no mass and no charge. It is its own antiparticle and always appears in pairs. Because of its special properties, majorana particles are electrically neutral and rarely interact with the environment, so it becomes an ideal carrier for quantum information coding.

　　Since majorana particles always appear in pairs, which means that there are two copies of the information they contain, theoretically speaking, majorana qubits are more tolerant to external noise. However, according to Attila Geresdi of QuTech Institute in the Netherlands, these qubits exist in the background of huge electronic effects, and it is very tricky to extract the information of majorana quasiparticles.

　　In June this year, the research team of Jia Jinfeng of Shanghai Jiaotong University wrote in the Physical Review Express that they had successfully captured the Mayorana fermion in the laboratory through a special artificial film composed of topological insulator materials and superconductor materials, which not only contributed to the development of quantum computers, but also helped to further uncover the mystery of dark matter.

　　Wilfermion: Double-faced Jiaowa

　　"Weyl fermions" are like shy "cousins" of electrons. In 1929, the German scientist H. Weyl proposed that there is a kind of electron with no "mass" and can be divided into two different "chirality" of left-handed and right-handed, and this electron is called "Wilfermion".

　　The fermion has two key characteristics: massless and chiral. The lack of mass means that it can move at high speed, and at the same time, it is extremely resistant to interference that is inconsistent with its chirality, which makes it difficult to scatter: two different types of fermion streams can be close together without interaction. It has been suggested that these properties can make it the basis of computers beyond spintronics computing power.

　　However, for more than 80 years, scientists have not observed the fermion in the experiment, and the semi-metallic materials with the characteristics of fermion have only recently appeared. On July 16, last year, Science magazine published the experimental results of the team of physicist Zaid Hassan of Princeton University. The team announced that they found "Waier Fermion" in "Waier Semimetal"; On July 20th, official website, Institute of Physics, Chinese Academy of Sciences, announced that the research team led by Fang Zhong, a researcher from the Institute, had successfully discovered the Verfermion in TaAs crystal for the first time. Therefore, the era of "Weyl Weyltronics" has appeared on the horizon, but there is still a long way to go.

Responsible comrades of the Department of Veterans Affairs answered reporters’ questions on ＂Opinions on Promoting Employment and Entrepreneurship of Veterans in the New Era＂

　　Xinhua News Agency, Beijing, August 2 nd: The responsible comrades of the Department of Veterans Affairs answered questions on the Opinions on Promoting the Employment and Entrepreneurship of Veterans in the New Era.

　　Xinhua News Agency reporter Mei Shixiong

　　On the occasion of the publication of the Opinions on Promoting the Employment and Entrepreneurship of Retired Soldiers in the New Era (hereinafter referred to as the Opinions), the responsible comrades of the Department of Veterans Affairs answered questions from Xinhua News Agency reporters on the main spirit of the Opinions.

　　1. Why did you issue this Opinion?

　　A: The formulation of the Opinions is mainly based on the following considerations:

　　First, it is an important guarantee to unite the morale of the military and achieve the goal of strengthening the military. Without a people’s army, there would be nothing for the people. At present, the situation at home and abroad is undergoing profound and complex changes, and the security environment challenges facing China are very severe. The task of safeguarding national sovereignty, security and development interests is arduous and arduous, and it is urgent to build a strong people’s army. Retirement and active service are different stages of a soldier’s life. The employment and entrepreneurship of retired soldiers have been done well, and their personal values have been well realized, which not only has a "calming effect" on retired soldiers themselves and their families, but also helps to relieve the worries of the majority of active soldiers, promote them to serve with peace of mind, effectively fulfill the lofty mission of the army in the new era, and help attract more high-quality talents to actively participate in national defense and army building, and truly transform their national defense potential into national defense strength.

　　The second is the inherent requirement of giving full play to the role of talents and boosting economic development. The army is a melting pot and a big school. After the training and training of the army, the vast number of retired soldiers have excellent political quality, will quality and ability style. At present, there are tens of millions of retired soldiers in China, and hundreds of thousands of soldiers are discharged from active service every year, which is an indispensable and important force in socialist modernization. At the same time, the military occupation has its particularity. After retiring to the local area, soldiers have a process of psychological adjustment, role transformation and ability transformation, which needs support and assistance. Formulate and issue the Opinions, improve the employment and entrepreneurship ability of retired military personnel, help them take a key step in job transition, career transformation and life transition, create conditions for them to integrate into society faster and play their role better, and contribute wisdom and strength to socialist modernization.

　　2. What veterans are the Opinions applicable to?

　　A: The Opinions mainly apply to three types of retired soldiers: first, self-employed retired soldiers; The second is to choose jobs independently and turn the army into cadres; Third, demobilized cadres.

　　3. What are the main features of the Opinions?

　　A: The Opinions mainly have four characteristics: First, it is an important declaration. For the first time, it is proposed that the employment and entrepreneurship policy for retired military personnel should be given priority, so as to ensure that retired military personnel will be given preferential treatment on the basis of enjoying inclusive employment and entrepreneurship support policies and public services, fully reflecting the concern and care of the party and the government for retired military personnel, and implementing the important instruction of the Supreme Leader General Secretary on "making military personnel a respected profession of the whole society". The second is problem-oriented. A series of policies and measures are put forward to solve the problems existing in different degrees, such as insufficient employment and entrepreneurship ability, insufficient support and imperfect service system. The third is to make overall plans. According to the existing policies and actual needs of various groups of retired military personnel, a relatively unified, standardized and orderly policy system will be gradually established in line with the principle of high and low. Fourth, innovation in inheritance. On the one hand, make full use of the existing policies and continue to adhere to the relevant policies that are generally welcomed by retired soldiers and have good practical effects; On the other hand, the good policies introduced in some areas have become national policies, and the experience and practices in the work have been solidified into policies; At the same time, according to the new situation and new requirements, some forward-looking innovative measures are put forward.

　　4. What is the general idea of the employment and entrepreneurship of retired military personnel?

　　A: It is clear in the Opinions that the employment and entrepreneurship of retired military personnel in the new era is guided by Socialism with Chinese characteristics Thought of the Supreme Leader in the New Era, and a specific requirement of 32 words is put forward. First, the government promotes and gives priority to policies. The government plays an active role in supporting the employment and entrepreneurship of retired military personnel, and earnestly shoulders its responsibilities in policy support, public service, publicity and guidance, organization and coordination. The second is market orientation and demand traction. In the final analysis, employment and entrepreneurship belong to market behavior. We should give full play to the decisive role of the market in resource allocation and improve the pertinence and effectiveness of employment and entrepreneurship services according to market demand. The third is voluntary choice and independent action. The key to promoting the employment and entrepreneurship of retired soldiers lies in their own efforts, speeding up the transformation of their roles and identities, courageously participating in the tide of reform and opening up, and actively participating in socialist modernization. Fourth, social support and multi-party participation. The employment and entrepreneurship of retired military personnel is a systematic project and the common responsibility of the whole society. It is necessary to mobilize the forces of the government, market and society to jointly promote it.

　　5. What measures are there to improve the employment and entrepreneurship ability of retired military personnel?

　　A: Promoting the employment and entrepreneurship of retired military personnel is the foundation. In recent years, the state has introduced some targeted measures to strengthen the vocational skills training of retired military personnel and enhance their employment and entrepreneurial ability, but there are also problems such as scattered policies, insufficient preferential treatment, low training quality and inflexible training methods. The Opinions put forward six measures:

　　First, improve the multi-level and diversified education and training system. Incorporate the education and training of ex-servicemen into the academic education and vocational education system, and rely on educational resources such as ordinary universities and vocational colleges to promote the connection between the education and training of active servicemen and ex-servicemen, and the academic education and skills training complement each other.

　　The second is to carry out pre-retirement skills reserve training. We will carry out in-depth activities of "sending policies to military camps", strengthen economic and social development and employment situation introduction, policy consultation, psychological adjustment, and "one-on-one" career planning, and strive to turn the qualities tempered by retired soldiers during their service into advantages in employment and entrepreneurship.

　　The third is to strengthen vocational skills training after retirement. Relax the time limit for participating in free training, and relax the current "you can participate in free training within one year after retirement" to "you can participate at any time after retirement"; Relax the geographical restrictions on participating in free training, and allow cross-provincial education and training with the consent of the provincial veterans affairs department.

　　The fourth is to implement lifelong vocational skills training. Encourage employers to regularly organize retired military personnel to participate in job skills upgrading and knowledge updating training; Incorporate laid-off and unemployed veterans into special vocational training plans and vocational skills training, and subsidize them according to regulations.

　　The fifth is to encourage participation in academic education. Encourage all localities to include retired soldiers who meet the requirements for college entrance examination into the enrollment scope of separate examinations in higher vocational colleges; Retired soldiers take part in the college entrance examination and postgraduate examination and enjoy extra care; During their service, military personnel participated in continuing education with open education, self-study exams and other academic qualifications. After retiring, they can continue to complete their studies and obtain the corresponding national higher education diploma.

　　Sixth, strengthen the management of education and training. It is proposed to establish a catalogue of vocational skills training institutions, training enterprises and institutions of higher learning for retired military personnel, and to make it public and implement regular assessment and dynamic management to ensure the teaching level of training units. Strengthen the assessment of the quality of education and training of training units and establish an incentive mechanism.

　　6. What measures are there to support the employment of veterans?

　　A: The Opinions put forward specific measures in terms of relaxing recruitment conditions, broadening employment channels and strengthening employment services.

　　In terms of relaxing the recruitment conditions, it is clear that organs, social organizations, enterprises and institutions recruit retired military personnel, appropriately relax the age and academic qualifications, and give priority to recruitment under the same conditions.

　　In terms of broadening employment channels, the first is to increase the recruitment of civil servants. College graduate soldiers who have served in the army for more than 5 years (inclusive) can apply for the position of orientation examination for service-oriented grassroots project personnel after retirement, and share the orientation examination plan for civil servants with service-oriented grassroots project personnel; All localities, especially border areas and deep poverty-stricken areas, have set up a certain number of grass-roots civil servant positions to recruit veterans in combination with the implementation of strategies such as rural revitalization and poverty alleviation; Party and government organs at all levels should pay attention to selecting and transferring outstanding college students with service experience when organizing the work in Selected Graduates; Broaden the channels for recruiting the people’s police of public security organs from retired soldiers such as anti-terrorism special operations. The second is to encourage enterprises to recruit. Enterprises that absorb the employment of retired military personnel can enjoy tax incentives; Enterprises that have made outstanding contributions to the employment of retired military personnel shall be commended and rewarded. The third is to explore new employment channels. Study and formulate a job directory suitable for the employment of retired military personnel, increase the proportion of retired military personnel recruited for service guarantee and security, and give priority to recruiting retired military personnel under the same conditions for auxiliary police posts; Demobilized soldiers are selected to participate in key tasks such as social governance, stabilizing the border, and tackling poverty, and retired soldiers are encouraged to work as full-time staff in the party’s grassroots organizations and urban and rural communities.

　　In strengthening employment services, it is clear that ex-servicemen enjoy priority treatment in public employment service institutions at all levels, and local people’s governments at or above the county level organize at least two special recruitment activities for ex-servicemen every year. At the same time, it is required to do a good job in follow-up support, establish employment accounts for retired military personnel, implement real-name management, track the employment of retired military personnel, and provide necessary services.

　　7. What measures are there to support veterans’ entrepreneurship?

　　A: Entrepreneurship is a higher level of employment and plays an important role in promoting employment. The "Opinions" highlight the guidance and services for retired military personnel who are willing to start a business. The first is to strengthen entrepreneurship training. All localities should organize and carry out entrepreneurship awareness education, entrepreneurship project guidance, enterprise management and other training for retired military personnel with entrepreneurial will, so as to enhance entrepreneurial confidence and enhance entrepreneurial ability. The second is to give priority to providing entrepreneurial places. Encourage the establishment of business incubation bases, creative spaces and business parks for retired military personnel, solve the problems of lack of venues, funds and technology in a targeted manner, and create conditions for their innovation and entrepreneurship. The third is to enjoy financial and tax incentives. Ex-servicemen who set up small and micro enterprises can apply for business start-up guarantee loans and enjoy loan discount according to regulations, and all localities can increase their support in light of the actual situation. Encourage social capital to set up veterans’ venture funds and broaden the channels of fund guarantee. Ex-servicemen engaged in self-employment can enjoy tax incentives. In the next step, relevant departments will also study and improve the preferential tax policies for employment and entrepreneurship of retired military personnel.

　　8. What measures are there to improve the employment and entrepreneurship service system for retired military personnel?

　　A: According to the requirements of the new situation and the ideas of platform informationization, team specialization and strength diversification, the goal and structure of service system construction are defined. The first is to build an information platform. Emphasis is placed on the supporting role of information construction in accurate service, and it is proposed to speed up the establishment of a nationwide, real-time sharing and up-and-down linkage information platform for retired military personnel’s employment and entrepreneurship services, and make full use of big data to provide accurate services. The second is to build a guidance team. Give play to the guiding team’s role in career planning, entrepreneurship guidance and employment absorption of retired military personnel, and attract entrepreneurs, experts and scholars with rich entrepreneurial experience, caring for retired military personnel and loving public welfare undertakings to improve the professional level of service guidance. The third is to build a training base. In accordance with the principle of classified management, accelerate the establishment of a regional training base with complementary advantages, resource sharing and special service for veterans, and bring it into the scope of national policy support and give appropriate subsidies. The fourth is to make good use of social forces. Advocate the whole society to participate in the employment and entrepreneurship of retired military personnel, combine the government’s provision of public services, supplementary services from social forces and self-service of retired military personnel, and support social organizations that serve the employment and entrepreneurship of retired military personnel to carry out their work according to law.

　　9. What measures does the Opinions take to improve and perfect the employment and entrepreneurship mechanism of retired military personnel?

　　A: There are many departments involved in the employment and entrepreneurship of retired military personnel, and an effective mechanism needs to be established. The Opinions put forward three measures: First, improve the working mechanism. Clarifying the working mechanism led by the Party committee, promoted by the government, led by the veterans affairs department, supported by the relevant military and civilian departments, and participated by all sectors of society, and refining the specific division of labor among departments are conducive to the formation of joint efforts. The second is strict accountability. Take the employment and entrepreneurship of retired military personnel as a political task and incorporate it into the annual performance appraisal of various regions and departments to ensure the implementation of the central policy. Resolutely clean up and correct those who add conditions and raise the threshold outside the central policy; If the policy implementation is not in place and the work is not promoted effectively, timely supervision and supervision will be carried out; Serious violations of policies and regulations, resulting in adverse effects, seriously investigate the responsibility of relevant personnel. The third is to strengthen publicity and education. Emphasis is placed on strengthening the education of retired military personnel’s ideological, political and job-hunting concepts, vigorously publicizing the typical employment and entrepreneurship of retired military personnel, publicizing the advanced deeds of all sectors of society that care for and support the employment and entrepreneurship of retired military personnel, and creating a good atmosphere conducive to the employment and entrepreneurship of retired military personnel.

　　10. What are the requirements for the implementation of the Opinions?

　　A: The vitality of the policy lies in its implementation. Even the best policy will be a castle in the air if it is not implemented. It is a very urgent task at present to publicize and implement the spirit of the Opinions, ensure that all requirements are implemented and benefit the vast number of veterans. The next step is to focus on the following tasks: First, strengthen policy interpretation. Publicly report the Opinions through various media, especially on the issues of concern to veterans, and actively solve doubts and doubts, so that the majority of veterans can accurately grasp the spirit of the policy. The second is to refine policy measures. All localities should formulate specific implementation measures in light of the actual situation and implement the requirements of the Opinions in detail. The third is to pay attention to typical guidance. Summarize and popularize the good practices and experiences implemented in various places in a timely manner, and promote the work from point to area. The fourth is to strengthen supervision and inspection. It is necessary to establish a task ledger, insist on tracking and asking for results, evaluate and check regularly, and promote the work in a strong and orderly manner.

Re-opening of Spring Festival in 2023： The high-quality market of scheduled films shows a recovery trend.

Special feature of 1905 film network According to the preliminary statistics of the National Film Bureau, the total box office of the Spring Festival in 2023 was 6.758 billion yuan, setting a new record for the second box office of the Spring Festival in film history. Six films covered suspense, science fiction, comedy, animation and other topics, and presented audiences with one Spring Festival feast after another. With a box office score of 2.606 billion yuan, it led the Spring Festival with a harvest of 2.164 billion yuan, followed closely. What are the different features of this year’s Spring Festival? What about other films in the same period?

The Spring Festival in 2023 ended perfectly, and several films can be said to have their own points of view, with a total box office of 6.758 billion yuan. Liu Zhenfei, a data analyst of Cat’s Eye Research Institute, started from the market data and analyzed which data are worthy of attention and resumption: "The announcement period and pre-sale period of the Spring Festival this year are relatively tight, showing a trend of backward alignment or long-term announcement. The box office of 1.35 billion yuan on the first day of this year reached the level of previous years, but it can only rank fourth in the Spring Festival file in history. By the end of the schedule, it has ranked second in the history of the schedule, indicating that from the first day to the sixth day, the box office trend is more stable. This year’s Spring Festival file can achieve this more stable trend. On the one hand, the audience is constantly returning to the cinema, on the other hand, the overall film is better. "

This year’s Spring Festival movies are not only diversified in types, but also different in the duration of a single film. Among them, the head film Wandering Earth 2 lasted for three hours, and Manjianghong also lasted for two and a half hours. According to the box office weight, the average duration of this year’s Spring Festival movies is as long as 150 minutes. Compared with previous years, the longest duration of movies is about 130 minutes. As a direct result, the number of national screenings will definitely drop. From the data point of view, the number of movies this year is less than that in previous years, but the total number of people watching movies this year continues to increase, whether the length of time is increased or the number of movies is decreased.

The audience will not only pay attention to the type and duration of the film, but also pay attention to the ticket price. The average ticket price this year is 52.3 yuan, which is the first time that the ticket price has been lowered for seven consecutive years. Spring Festival is a popular consumption schedule that is in short supply, especially under the premise that the operation of cinemas in the past three years is not ideal, the price increase of the schedule is also within the audience’s understanding. However, this year’s Spring Festival stalls may be influenced by the negative comments on the price increase of last year’s Spring Festival stalls, or because of the pursuit of allowing profits to welcome guests, but the fare has been lowered, and this move is also conducive to the audience to enter the theater for consumption. According to the data, this year’s low-frequency movie users have improved significantly compared with last year; For high-frequency movie users, the proportion of ticket purchases has also increased slightly compared with the past. It can be said that this year’s Spring Festival file has made the film market show a thriving recovery trend because of the benefits of welcoming guests and the richer types of film supply.

Before the Spring Festival, many people would predict the situation of each film. In previous years, there was often a situation of one super and many strong, but this year was very special. Wandering Earth 2 and Manjianghong went hand in hand in the past few days, and you chased me and there was a situation of "two heroes standing side by side". Liu Zhenfei mentioned: "This situation is really rare. In the past, it was said that the counter-attack of the schedule or the birth of the dark horse all started from the low position and rushed to the high position, or fell down because of word of mouth, forming a big deficit. This year is different, "Man Jiang Hong" is gradually improving, and "Wandering Earth 2" has basically not dropped much, and there is such a so-called "dual-core drive" that goes hand in hand. "

In this situation, users of high-frequency movies will choose to have them all, while users of low-frequency movies will choose to watch either the hottest movie or the best one, which is reflected in the previous slots. No matter how much the total box office is, the audience’s flow or the bonus of the slots must be concentrated on the individual movies in the head, and the slots have been improved as a whole, but the capacity has not been improved.

This year’s "Wandering Earth 2" and "Man Jiang Hong", first, the audience is very different. The audience of "Wandering Earth 2" is mostly elderly or male, including those in first-and second-tier cities; The opening of "Man Jiang Hong" will be biased towards women or sink into the market, and then it will flow to large-scale users. From the genre point of view, one of the two films is more large-scale production and big scenes, and the other one has achieved layer-by-layer inversion and endless jokes in the plot, which has produced a good form of distinguishing the audience from the temperament. It can be said that one is literary and one is martial, which absorbs different audiences and finally forms a win-win situation that keeps pace with each other.

Under the premise of quantity, the types of this year’s Spring Festival stalls are very diverse, with as many as 11 types. Liu Zhenfei said: "Judging from the different types of films in this year’s Spring Festival, there are also some differences in urban areas across the country. For example, first-and second-tier cities will be more concentrated, such as Northeast China and North China, and the most prominent is "Man Jiang Hong"; In the southern region, it may be biased towards such fantasy animation, such as Wandering Earth 2, which will be biased towards some areas in East China and South China. Therefore, the richness of the types of Spring Festival files is also a different movie-watching map formed throughout the country, and audiences all over the country will choose a movie they really like. "

Therefore, the box office performance of this year’s Spring Festival file really gave all film practitioners a shot in the arm. Next, there will be a relay release of films. Behind the brilliant achievements of this year’s Spring Festival, we can find that the third and fourth lines have sunk into the market and returned to the market very quickly. Compared with the past few years, the whole trend of returning home has taken shape again.

In 2018 and 2019, the box office peak of audience in third-and fourth-tier cities reached around the third grade, and then slowly fell back; This year, it was not only on the first day of New Year’s Day, but also on the third day of the following year, the third-and fourth-tier cities reached the high point again, which played a timely supplementary role in the Spring Festival stalls. From the market point of view, it was the tide of returning home that brought the biggest benefits to the Spring Festival stalls.

With the popularity of movies, whether it’s "When the Wind Comes Again" or "China Ping-Pong’s Jedi Fight Back", there are still many popularity movies to be released in the future movie market. What can attract the audience to the cinema continuously is that these popularity movies are released every week, so as to train moderate and heavy fans to enter the cinema frequently, which has a regulating effect on the whole market and is a benign development for the cultivation of the schedule.

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