Shanghai Oriental Pearl lightning strike fire like matches
Oriental Pearl TV tower fire close-up
Oriental Pearl TV Tower on fire
June 2006, the Oriental Pearl TV Tower over the lightning
At 23 o’clock on the April 12, 2010, the Shanghai Meteorological Observatory issued yellow warning lightning.
April 13, early morning lightning Huangpu River. Two twenty or so witnesses to see the Oriental Pearl TV top Burning like a match.
1 hour and 20 minutes later, fighting and rescue work has basically ended. Pearl of the Orient the responsible person, top of the tower caught fire because of strong lightning in the top of the tower transmitting antenna, antenna housings caused by combustion.
As a landmark in Shanghai, one of the high 467.9
M Pearl of the Orient is not the first time encountered by lightning. Lightning on the high-rise buildings in the “preference” does not impede the quest for the truth: the lightning incident, whether natural disaster or a man-made?
Current Guests: off like a stone, mine experts, the International Electrotechnical Commission IEC/TC81 (Working Group III) of China experts. Born in 1945, in lightning protection of nearly 20 years, has many achievements in the field of lightning protection standards.
Classic Quotes:
“The thunder outside antenna in a fiberglass cast, after the breakdown of the insulating layer of non-fire retardant asbestos.”
“Pearl of the Orient was a flank attack is a normal thing, the higher the building the greater the chance of being swiped.”
“Pearl of the Orient using less semiconductor lightning eliminator with long needle, the product of 90 years in the last century caused a great academic debate.”
Background:
Shanghai Oriental Pearl TV Tower, Beijing suspected the fire started by lightning Lightning Detection
Non-fire retardant asbestos induced Oriental Pearl
Tower to the top has been burned black
“Tower struck by lightning not uncommon, but the fire is the first time I heard.” Kwan, 65, as the stone of the last 20 years in lightning protection, lightning in the Pearl of the Orient after the incident, he was as usual to the media reports are collected up.
He said Shanghai is indeed a time when the fire tower is thunder, the day of the radar echoes can be proved. If lightning strikes in the Pearl of the Orient cement wall, cement down the lightning current will go down in a bar, “better, then even if the skin is nothing concrete, the situation of almost likely to play down a cement or brick.” However, according to the relevant analysis, as stone, hit the mine sideswipe outside antenna fiberglass cast, ignited after the breakdown of asbestos insulation.
Shanghai Fire Network news confirmed this is the signal launchers fire wall on the cable and housing on the asbestos Wasi. Stone said, as related on February 9 last year, the CCTV fire also because of the asbestos insulation ignited by fireworks.
According to his analysis, the Oriental Pearl non-asbestos insulation layer of flame retardant materials. He said this event gives us a big lesson is that high-rise buildings within the walls must use fire retardant insulation material, “Pearl of the Orient if the insulation is flame retardant material, will not fire.”
No lightning eliminator
Semiconductor few long needle eliminator
The International Electrotechnical Commission standard, wrote: “So far there is no one kind of equipment and methods to change the weather phenomena of nature to prevent the occurrence of lightning and the lightning in the vicinity of the building or buildings.” In the implementation of relevant norms, three types of lightning protection lightning protection device efficiency buildings were 95%, 90% and 80%.
“Some people believe that lightning protection devices installed after the building was perfectly safe. From an economic point of view, to achieve this is just a waste. Therefore, the special that” or reduce “to show it is not foolproof, because the design in accordance with this standard anti- mine safety device is not 100% mine. “” Building Lightning Protection Design Standards “provision in the Article 1 reads.
Therefore, in the final years of the last century, the once red-hot country, claiming up to 100% elimination of mine (usually occurs from high up the building run leader triggered lightning) and the main discharge current gradually weak 99.9% less semiconductor lightning eliminator with long needle caused controversy in academic circles. Pearl of the Orient is exactly this eliminator.
Since 1995-1998, China’s academic community for this one product, launched a major debate. Lightning experts debate by many as “the development of the mine a major impact on the industry one of the events.” In 1997, organized by the Beijing Municipal Disaster Reduction Association Symposium eliminator after the end of 22 in Beijing from various scientific research, design, and the University engaged in the work of scientists and joint mine wrote an article calling for the authorities strictly and promptly rectify mine standards, norms and product market.
This 22 scientists, including the originator of China’s mine, now 90 years old when Wang Xu, National Standard, “Lightning in design,” the drafters of Lin Weiyong to study the “Tiananmen Square, Great Hall of the lightning protection” horse simulation HTC et al.
Off as the stone is one of the 22 science and technology workers. He took out a 22 year joint editor of a letter addressed Science and Technology Daily, which wrote: “your newspaper published an article entitled” Order of nine days, P Plus Green Lightning protection – less semiconductor lightning eliminator with long needle development and promotion of Revelation . “After reading our long-term construction, electricity and other departments engaged in research and run the comrades, on paper, and a distorted view of the fact that shocked. For a long time, international academic organizations did not recognize the eliminator, the international standardization bodies to resist Such products will be included in the standard. at home, since the consumer since the advent of lightning, because it has no scientific basis is controversial, especially without a scientific experiment to validate its performance kept it a lot of promotion to the market, used in engineering, causing huge losses of state property, people feel sad. To this end, numerous discussions, we have drawn out the views to be published in your newspaper to set the record straight. “
In a debate, the electricity sector, the Ministry of Posts and Telecommunications issued a document to other units to stop using the eliminator. But “45 years ago, Pearl of the Orient looking from another time, for the or the eliminator of new products,” Stone said this off as a lightning event at least prove that the “eliminator does not eliminate the mine.”
High-rise building measures should be done against a flank attack
“Pearl of the Orient was a flank attack is quite normal, not a small probability event,” said Kwan as stone.
The world’s first tower was struck by lightning is known as “Europe’s first tower,” Austin Tan Jinnuo Moscow TV Tower, 573.5 m high. It was in 1972 statistics, it is 4 years and a half years was a 143 times by lightning. Ray often played the middle position in the Moscow television tower, this phenomenon has aroused the concern of mine academia, lightning EGM theory was born.
Lightning EGM decided to high-rise buildings flank attack might occur, the higher the building the greater the chance of being swiped. In the 2000 edition of “Lightning in design”, according to the height of the building on the first class, second class, third class Fanglei separately anti sideswipe building requirements. Pearl of the Orient in the second class of mine buildings, standard construction requirements for this type of “high degree of more than 45m of reinforced concrete structures, steel structures, still should take the following anti-flank attack and other potential protective measures.”
But Kwan learned as stone, and many buildings not designed to do against a flank attack, “some are too ugly.” According to his analysis, this time the site was struck by lightning do not measure against a flank attack. After the incident, the most so that he worried about whether the ball has done a tour level measures against a flank attack. Tourist layer on the sphere diameter 45 meters 263 meters high, is the best place overlooking the Greater Shanghai and another in the revolving restaurant 267 meters, DISCO dance hall, piano bar and is located in 271 meters of the 20 KTV private rooms. The ball was struck by lightning in the area with the same glass-steel housings are, “If there is no anti-flank attack on the trouble.”
Standing more than the consumption of physical strength to walk! Jie Mi subvert traditional health Mistakes
Easy to mistake the world of common sense, even more than you know. Taiwan’s latest issue of “Healthy” magazine will tell you, many of our customary knowledge is wrong.
Error 1: 100 per day under the healthy hair
Too much hair on the scalp will stimulate the sebaceous glands, especially oily hair person, but the less hair. If the hair is dry hair, more hair on more suitable. But the best is made with natural bristles comb, which is more difficult to scalp injury.
Error 2: walk, stand consuming than physical
Because, standing, his legs had been to bear the weight of the body, two legs can not relax. The walk is a leg to bear weight, the other one in the relaxation.
Error 3: Blood sweet person easy to mosquitoes
Mosquitoes not smell the smell of blood. But the mosquitoes are particularly sensitive to heat, even the difference between 0.05 degrees Celsius can tell the difference. Therefore, when we exhale carbon dioxide and water vapor, they will recruit a mosquito.
Error Four: Toilet is very healthy place
Regular cleaning of the toilet water than people stereotypes cleaner. Researchers found that the family of bacteria, germs are hiding at home most of the inside surfaces of the pipes, the rag on the more bacteria than the toilet.
Error 5: A wise man big head
Brain size is not the key decision of whether or not clever, brain structure is most important. Human brain function is determined by the neural network, while people with low IQ because some of the features in this area have died, with brain size.
Error 6: nosebleeds elevation when jaw
The only advantage of this approach is not the nosebleed flow on the floor, but will not stop nosebleed, but let nosebleed flows into the throat and may even cause vomiting and suffocation. Correct approach is stuck in the nosebleeds of the nostrils of a group of small cotton ball, soft reduction, nose and head leaning forward, or an ice towel around his neck or wet towel can stop the bleeding.
Error 7: shaved armpits, sweating can be reduced
Shaving armpits to stop the sweat produced no effect, but rather after shaving armpit hair, armpit because the discharged water can not be hidden in the clothes left on the perspiration. Moreover, the scratch armpit hair are likely to cause hair root abscess. Correct approach is to decompose the sweat armpit sweat can wash before.
Error 8: Khan is the smelly
Khan is no taste. But a lot of sweat contains organic matter, bacteria, these substances are all nutrients, but the bacterial decomposition of sweat, the only unpleasant waste generated.
Error 9: brush your teeth immediately after a meal
Brush your teeth immediately after eating, acid erosion cause food enamel, this will only strengthen the food damaging effects of acid on the teeth. Correct approach is to first rinse, more than half an hour after brushing.
Error 10: effect of drugs on the same men and women
New research shows that the absolute efficacy of drugs on men and women are different. For example, aspirin can help prevent heart attack men, but has little effect on women. Anesthetics such as oil-soluble drugs, women with a dose greater than men.
Zhang Yimou film scripts North 30 years ago writing comparable exposure, “Xu Jinglei”
Zhang Yimou’s pretty neat scripts
1 users yesterday drying out 30 years ago, Zhang Yimou’s first film scripts in the North, Zhang Yimou answer write neatly and friends have exclaimed, even users that can create “font on president,” comparable “Xu Jinglei font.”
By drying the respondents in the Internet is “Photo 78 Class Photo lighting technology unit” of the open-book exam, in a column that is filled with students, “Zhang Yimou.” When he was not only a pen computer, by contrast Zhang Yimou’s handwriting, then the answer really is Zhang Yimou. Up to three of the respondents, did not receive the film as a “debate”, but have been friends a praise, “really is not an ordinary neat ah, and print out the same, not Dage also wrote not crooked … …” “word as it were, “” rules, clean, “” worship plus learning “, even friends say,” Zhang Yimou should be to write and create on president fonts when copybook, Xu Jinglei can emulate them! “
Ping Qiu to a greater passive constraints, “China” move was criticized
750)
this.width = 750 “>
Cai Zhenhua
Uneven development of table tennis world problems has become increasingly prominent, the ITTF’s many reforms often fail, table tennis seems to have caught more and more reform of the cycle. Deputy Secretary General Administration of Sport, President of Asia-Ping Lian Cai Zhenhua and Chinese Table Tennis Association recently said to this reporter’s interview, the ITTF’s reform often fail because too utilitarian, and the ITTF does not understand the fundamental research and the charm of table tennis, work-oriented thinking of the obvious bias.
Asian Table Tennis Championships 2010, Asia-Europe race ended in Beijing this evening, two rounds, Asia and Europe teams have equal shares. However, this is not the table tennis sport in the world the true portrayal of the development pattern. The Asia-Europe Meet, the Chinese team sent a veteran Wang Liqin only competition can be said that the strength of the Asian team and do not represent the highest level of table tennis in Asia. But Samsonov, Gomez as the main force of the European team in Europe today is basically encompasses the elite men’s table tennis players.
While the European teams and Asian teams, regardless of the up and down, but it is the main force in the Chinese team did not send the premise of playing, so this does not cover more than a decade, the European Table Tennis embarrassment in decline. When Schrage, Pearson, Samsonov and a number of more than 30 years “old” or even over 40-year-old veteran, one by one in order to “evergreen” image appeared when the track, like Bohr, Mei ‘re so fresh blood is to become the European table tennis
“Rare”; even Asian table tennis, also only limited areas in the East better, but China does not remove that too few bright spots; in Asia and Europe than other continents, table tennis to carry out the largely still in the “literacy” stage.
Cai Zhenhua said the table tennis world faced the biggest problem is the strength of the Chinese team too. “Ten years ago, the development of table tennis world is still relatively balanced between the level of very strong teams. But with the growing strength of the Chinese team, problems will emerge.”
With the Chinese team hegemony in the world become increasingly strong, the Chinese team’s case, the outcome of international table tennis events the gradual loss of suspense, races also are gradually weaken the charm.
Over the past decade, the ITTF continuous series of reform measures introduced, the system from the big ball, 11 points system, inorganic adhesive system to the Olympic competition system, repeatedly adjust the aim is to pressure the Chinese team’s advantage.
However, the results of the reform but always with the mind runs counter to the Chinese team’s strength to a greater power, the uneven development of table tennis in the world’s problems to a greater prominence.
Cai Zhenhua said: “The ITTF has experienced repeated failure of reform, did not realize that only rely on the Chinese team strength advantage to weaken the reform measures will not work.”
“Chinese team’s advantage to establish a broad mass base, strong reserve force and a strong training and research capacity on. In fact, for every ITTF reform, the Chinese team are the first to adapt to the adverse impact on always the smallest; and other associations, because they do not have the basic strength of the Chinese team, but take a higher price and a longer process to adapt to the new system of rules and competition. This is the strength of the more reform, the stronger the Chinese team, Table Tennis in the uneven development of the world the more fundamental reason. “
However, the ITTF has until now insisted on the reform of the Chinese team line. Not long ago, Sharara ITTF President also raised the London Olympic Games Association, the number of participants from up to 3 reduced to two of the reform proposals, of course, affected the greatest talents of the Chinese team, while many lower-level association to take this opportunity to get the Olympics. Chinese team did not oppose the reform proposal, in fact, in recent years, in order to show that the active support of the position of development of table tennis world, the Chinese Table Tennis Association to all for their own reform measures, have chosen to support the attitude of tolerance and even the few oppose. However, the main European Ping Lian Xi Boxi Table Tennis Competition Asia and Europe in this period, the ITTF has openly opposed the new reform proposals. Bossi said: “If in order to increase participation of table tennis competition cut is very dangerous places, which may reduce the competitive level of the Olympic Games table tennis top. I think the Olympics should be the elite Olympic Games, the best should be win! “Bossi that in the ITTF after the implementation of new reform measures, although Table Tennis Association of backward regions get more opportunities to send athletes to the Olympics, but Olympic table tennis competition will lead to emergence of more low- level of competition, exciting level will naturally be affected.
The ITTF also suspected Cai Zhenhua, “Shafujipin” whether the reform measures to achieve the desired results. Past history has proven that the reform of the ITTF has always deviated from the intended result of the track, or even cause more problems. Cai Zhenhua said: “For example, a prominent phenomenon is that, after such a large reform of the ball and inorganic glue, table tennis players showing more and more aristocratic tendencies.” In recent years, causing players to compensate for the reform of the ball, rotation, etc. loss, have the equipment on brains, and now, Table Tennis rackets cost may reach several thousand or even million yuan, it pushed up the cost of the development of table tennis players to the high threshold. In table tennis as a whole rather low level of market circumstances, the ITTF’s similar reforms, table tennis athletes in fact led to further reduce the rate on the popularity of table tennis has also increased the difficulties.
The current world sports, football, basketball and tennis and other sports a high degree of market-oriented, individual sports associations of these sports can be, “is very rich” to describe, the ITTF is very envy. According to Cai Zhenhua introduction, the ITTF has withdrawn the table tennis events in Europe the right to operate. However, this is a race makes the European Pinglian heavy blow to the enthusiasm, had the highest international level table tennis the European market, but in recent years because of the contradiction between the European Ping Lian and ITTF into the development dilemma.
Cai Zhenhua said the world the development of table tennis, table tennis events need to increase the fun and interactive, to expand the influence and audience and, more efforts need to be popular and attract more young people involved in such basic work. Rather than to treat the head feet hurt a headache to treat the foot, or what method can make money regardless of the consequences on how to on how to think.
Scientists Jiemi frequent reason for this earthquake: crustal deformation caused by groundwater
Since 2010, some of the world seems to frequent earthquakes: from Haiti, Chile, Turkey, Japan, Mexico to Indonesia earthquake, magnitude are more than seven. Global seismic activity unusual yet? Experts say “high earthquake of that” controversy exists.
Google announced in Haiti before and after the earthquake image (left before the earthquake, right after the earthquake)
Park will open the “dawn of Disaster Prevention Education Park” demonstration zone earthquake science education
France Demeter earthquake satellite
April 11, in the Solomon Islands this year, more than magnitude 7 earthquake in the second. Since 2010, some of the world seems to frequent earthquakes: from Haiti, Chile, Turkey, Japan, Mexico to Indonesia earthquake, magnitude are more than seven. Global seismic activity unusual yet? Does this mean – According to statistics, this year more than the global level 6 earthquake would have been more than 10 times. Seismic gap in the large magnitude earthquake is smaller after another, from the information available to the China Earthquake, April 6 have occurred in the world for more than 4 earthquake.
According to the U.S. Geological Survey provides the data 134 times the world average in each of the magnitude 6 to 6.9 earthquake, 18 from magnitude 7 and 7 earthquakes. However, so far this year have occurred in the earthquake of similar magnitude over the most years of the same figure. Online People joke, and now the Earth has been as mobile as he was transferred to a “vibration mode.” Well, now it has entered the world of high earthquake? Earthquake experts have different views on this.
“Period of high seismic say” there is controversy
High-fat, said China Earthquake Networks Center research fellow Shih-Hung Sun that now the world may be in a time of frequent earthquake activity. He said the comparison with the past one hundred years the history of seismic activity in 1964 and 2004, it did not happen 40 years more than 8.5 earthquakes have occurred twice this year, more than magnitude 8.7 earthquake, which is more than 40 years of relatively low level of activity The state took place, indicating that more than eight years of global seismic activity level was high, and the first half of last century, almost equal to the level of seismic activity. The first half of last century when a higher level of seismic activity, is relatively weak when the latter half of the 21st century there are increased signs of seismic activity. “If there is a hundred years seismic activity period features, it may now and again into the high-magnitude earthquakes frequent stage.” He believes that the era of high seismic activity may continue for some time, estimated that at least 40 years.
Normal that the “single from the data point of view, does intensive earthquake in recent years, indicating a relatively strong earth movement, but not that the earthquake has entered a period of frequent earthquakes, earth science theories and observations so far not been can give a clear conclusion. “Earth and Space Sciences, Peking University, Associate Professor Dr. Lei Jun said that this year’s seismic activity is normal area, and eight more earthquakes occur, indicating that a very large seismic energy release has been released. Future earthquakes will continue for quite some time, but in time may be elongated, although the magnitude will be maintained at a certain intensity, but will be alleviated.
Institute of Geology, China Seismological Bureau, said researcher Jian-Dong Xu, global earthquake is still in the normal level, and now all over the world more and more advanced communication system, people can learn more about the news of the earthquake. China Seismological Bureau requested the domestic four earthquakes have been announced, making reports increased the public feeling more and more frequent earthquakes.
Circum-Pacific seismic belt most active
Institute of Geophysics, China Seismological Bureau, said Dr. Chen Bin, the world’s three major seismic zone, are circum-Pacific seismic belt, the Eurasian seismic zone and the ocean ridge seismic belt. According to available statistics, the circum-Pacific seismic belt is the world’s most widely distributed, the largest earthquake in the earthquake zone, the energy released more than 80% cent of the world, in other words, about 90% of the world’s earthquakes occur in the circum-Pacific seismic band, while seven or more than 80% of earthquakes occurred in this region, the global outbreak of more than magnitude 7 earthquakes have also occurred in most Pacific seismic belt.
Why Pacific seismic belt of frequent earthquakes? According to theory of plate movement, the world is divided into several sections, the middle of the Pacific plate rapid expansion of mid-ocean ridges, so what both sides of the plate edge and plate and the Americas, Asia-Europe plate collision, causing frequent seismic Pacific region. That the earthquake was not evenly distributed in the earth, but rather focus on the plate boundary zone. In general, the internal plate, the crust is relatively stable, while the junction plate and the plate is the crust more activity areas, where volcanic and seismic activity and fracture, extrusion fold, rising magma, crustal subduction and so frequent. The Pacific plate boundary in the plate is the most active, so earthquakes and volcanism are the most frequent.
Scientists have discovered new causes of earthquakes – water
In general, the production includes three causes of earthquakes:
Tectonic origin: This earthquake is also known as fault earthquake, the rock from the ground caused by a sudden dislocation, this type of earthquake most widely distributed, its intensity is the highest, about 90% of the earth and the most destructive earthquake earthquakes are fault earthquake;
Volcanoes: volcanic eruptions that time because of the impact of gas caused by the earthquake, the earthquake intensity of this small area around the volcano is more significant impact, the total number of volcanic earthquakes accounted for 7% of the earthquake;
Fall Cause: In the limestone areas of development, a huge rock formation is underground dissolution cavity, or exploitation of mineral resources, the formation of mined areas, the earthquake caused the collapse of overlying strata, the scope of this earthquake is small, less destructive, accounting for the total number of earthquakes 3%.
Published in the recent “Nature” magazine on the study expands our understanding of the causes of earthquakes. University of Utah Institute of Energy and Earth Sciences geophysicist using a known method of magnetotelluric sounding (similar to CT scanning the patient using X-rays), on the South Pacific on the Pacific Plate and the Australian plate the subduction zone research and found the water on the earthquake generated an important role. New Zealand South Island’s east coast following the Pacific plate began to sneak into the Australian plate under the ground about 10 miles, hydrated minerals in the water contained is released, most of the water to rise over the Australian plate crust, further damage rock, expanding cracks. This grid-like structure of the fault rupture undermine the stability of the crust, and promote new formation of strike-slip faults. Here, the past 200 years, there had been close to eight major earthquake, these earthquakes are all with the strike-slip fault. The role of fluids makes the crustal deformation and earthquake generation to create the conditions.