ɦ 䣺 2014-05-0810:52:51123.Chapter 123 Dealing with the Killer

Artificial stone and artificial wood are almost the same, are based on waste utilization, with unsaturated polyester resin as binder, stone powder, stone slag as filling materials, when unsaturated polyester resin in the curing process of stone slag, stone powder evenly and firmly bonded together, that is, the formation of hard artificial marble. There are also artificial stones made from non-natural mixtures such as resins, cement, glass beads, aluminite powder, etc., plus crushed stone binders.

The artificially improved stone has the advantages of non-toxic, non-radioactive, flame retardant, non-sticky oil, non-seepage, antibacterial and mildew-proof, wear-resistant, impact-resistant, easy to maintain, seamless splicing, and arbitrary modeling. One of the more puzzling is that it is non-radioactive, is it possible that natural stone is still radioactive? You guessed it.

Since the Crimean War, the military distributed large quantities of cigarettes free of charge in order to boost morale, the consumption of cigarettes has skyrocketed, and this "drug", which is addictive to more than marijuana, has quickly continued from the battlefield and has become the health killer of the common people, it is the first killer of the lungs, and the honor of the second killer of the lungs is due to a substance that the average person is not aware of today and even for many generations - radon.

This is a radioactive substance, and the ultimate source is uranium. There are several isotopes of radon, the main one is radon-222, which is a decay product of radium-226, which is a decay product of uranium-238. Uranium and radium are commonly found in soils and rocks, and radon is constantly being produced, especially in soils, which are more easily released because they are loose. Therefore, radon can be said to be ubiquitous, but the radon released in the soil and rocks outdoors is quickly diluted, but it is different indoors, and the radon produced will accumulate. Because the specific gravity of radon is heavier than air, it is eventually deposited at the lowest level of the house.

The half-life of radon is only 3. After 8 days, it will further decay into polonium, and eventually decay into stable lead. Alpha rays are emitted during this process. Because of its large mass and poor penetrating ability, alpha particles cannot penetrate the skin, so it can be said that they are not dangerous to health when they are outside the body. But once inhaled, it's different. Radon is a gas that is inhaled into the lungs with air, and its decay products are deposited in the lung tissue, emitting alpha rays. This is the ray emitted by the cell, which can enter the cell, interrupt the DNA, cause DNA mutations, and then lead to cancer. Theoretically, the impact of just one alpha particle may cause a mutation that leads to cancer, so there is no safe dose of radon, and low concentrations of radon outdoors can also increase the risk of lung cancer. However, the higher the concentration, the greater the risk, and for every 100bq/m3 increase in radon concentration, the risk of lung cancer increases by 10%. Radon and cigarettes work synergistically to increase the risk of lung cancer, so the effects of radon are greater for smokers, and the risk is 10 times greater for non-smokers.

Basements are not a safe place to live at any given time, and the use of stone indoors exacerbates this health hazard. Artificial stone can be screened with low radioactivity in the ingredients, so the radon produced by the stone can be controlled.

In order to screen the radioactivity of stone, it seems that a testing instrument has to be invented, for the sake of human health, radioactivity, which plays a key role in human understanding of the internal structure of the atom, has to be "discovered" in advance.

Alpha rays are essentially nuclei of two neutrons and two protons, that is, helium nuclei moving at high speed, which are positively charged, so they can be detected by the electromagnetic effect, but how to detect this phenomenon is more difficult to explain to the public. Downing decided not to explain, anyway, you didn't call me the Pope of Scientology, now is the time to play a religious miracle.

Tang Ning likes to dig out female anchors from operas and dramas, because she is not only beautiful and has acting skills, but also often has a good voice. This time, he found a Swedish anchor again, of course, although he didn't understand Swedish very well, the first time he did a talk show with Elise he still used English, the people of Scandinavia can speak more than one foreign language There are still quite a lot of people, because their own mother tongue is less spoken in the world, in order to compete with the European powers, they have to learn foreign languages, especially English, with the British national power of the world, now it is an international language, if you want to develop in science and technology, business, and industry, you have to learn it. Academics still had the habit of using Latin, but Downing, as the Pope of Science, did not know Latin at all, and the vast majority of his papers and writings were in English, which made the language even stronger.

The program he and Elise did was about the popularization of radioactive phenomena, and after writing an article in the journal "Nature" that attracted the attention of the academic community, because this event was related to the lives of ordinary people, it was necessary to explain it in the mass media, and no one was more suitable for this matter than Downing himself, and many scientists did not believe in such a thing as radioactivity. （http：／／.）。

When he introduced radon, the second killer of lung organs, Elise asked the audience a question: "So, Monsieur Grand Duke, what should we do about the first killer, cigarettes?" What should you do if you say that not only the smokers themselves will be harmed, but also the people around the smoker, almost the same effect? Do you have a solution? Is there any medication that can prevent it or something. ”

In addition to the idea of banning smoking in public, the Grand Duke also thought of a big trick: "For mass consumer goods, it may be difficult to completely ban them, and it will also be difficult for ordinary people to do long journeys on the train, so I wonder if it is possible to invent a smokeless cigarette, so that smoking is only harmful to the smoker itself, but does not produce public harm, it should be a more appropriate compromise, of course, it is best to dissuade everyone from smoking." ”

Not only is it difficult to completely ban mass consumer goods, but such a policy is also easy to lead to smuggling, so after the fact, Tang Ning really seriously set up the research and development of pollution-free cigarettes, mainly through atomizing appliances to heat propylene glycol or glycerol solution into a mist, directly inhaled into the human body, at first glance it looks like smoking, but no tar is produced in the process. Pollution-free cigarettes are like nicotine to give smokers too much addiction.