I! Pretending to Be Reborn, Director of Doomsday Hoax

Ouyang Tao frowned, and said, "It's like not having enough water and granaries. Once there is an unforeseen event such as a severe drought, there will be no water to drink, no food to eat, and no time to prepare for other things. remedy!"

"A small pure natural circulation artificial biosphere has a very low fault tolerance rate. Once a small problem occurs, it is easy to affect the whole body and seriously affect the circulation of other chains, just like dominoes."

Ouyang Tao thought carefully, and said solemnly: "We must use chemical methods and biological cycles to complement each other, and artificially intervene! For example, electrolysis of carbon dioxide in the absence of oxygen, artificial synthesis of nitrogen in the absence of nitrogen fertilizers, etc.!" "This is not only for us to maintain The project of survival is also the great cause of Fuze's descendants!"

Xu Qiu nodded, knocked on the table, and drew everyone's attention back.

His voice was flat, but with convincing power, he said: "I have also heard about the Biosphere [-] mentioned by Mr. Mei earlier."

"It can be said that Berry Country's Biosphere [-] is the human project closest to the natural biosphere so far!"

"Although there are many mistakes in it, there is also a lot of experience, which is worth learning from!"

"For example, after the Concrete Berry Country discovered that concrete would affect the atmospheric circulation in Biosphere [-], it directly coated the surface to shield it, but have you ever thought that we can completely use this characteristic of concrete!"

Xu Qiu's words stunned everyone.

Fan Shaoqi, dean of the School of Geography and Environment at Tsinghua University, and head of the Key Laboratory of Combining Human Engineering and Natural Environment, said: "Director Xu, you mean that concrete can be used?"

After several months of investigation and research, the scientists of Berry Country finally determined that the concrete would affect the gas circulation and lead to the disorder of the internal environment.

At that time, the scientists in Berry Country planned to knock out all the underground concrete and replace it with airtight and airtight synthetic materials.

09 But the estimated cost of knocking down the concrete with a thickness of two meters and an area of ​​more than 10,000 square meters is too high.

Not to mention, the average altitude of Ecosphere [-] has dropped by two meters, and how to deal with the complex issues of internal buildings and various small ecosystems.

Therefore, they had to use paint to completely seal the concrete surface to prevent exchange with gas.

This kind of thing that should be avoided can still be used?

Xu Qiu's voice broke the silence and said: "Concrete can absorb carbon dioxide, which means that concrete products absorb carbon dioxide and realize carbon storage."

"The three basic components of concrete, cement, fine sand, and aggregate, can all be used as carbon dioxide adsorbents to maximize carbon storage!"

"Another point......"

Xu Qiu's eyes were deep, and with an unquestionable momentum, he said: "Whether it is a national demolition or the construction of an underground city, a large amount of high-calcium steel slag and other industrial waste will be produced."

"A significant portion of that is probably not recyclable."

"And these, the aggregates that can be used to produce concrete!"

Xu Qiu's understanding of concrete is simply incomparable to others.

Zou Baitao, Lu Guangyuan and others are very aware of this point. Even Professor Yan Yan, the most authoritative expert in the concrete industry in Longguo, is ashamed of himself, let alone these ecologists!

Xu Qiu explained in a familiar manner: "A kind of cement called Portland can absorb about 14.00% of carbon dioxide after two hours of carbonization, and the strength of the material after carbonization is equivalent to seven hours of traditional curing."

"The ladle steel slag absorbing powder can absorb about 12.00% to [-]% of carbon dioxide and use it to replace river sand."

"The oxygen-blown blast furnace steel slag can absorb more than 12.00% of carbon dioxide!"

"In terms of specific data, the strength of coarse aggregate made of this material can be compared with that of limestone. A standard block of 20*20*20cm can absorb about [-]kg of carbon dioxide!!" Surprisingly, if the underground city is built in the future and the self-circulation system is perfected, then the carbon dioxide storage technology of concrete can be used on a large scale.

Blue Star has a greenhouse effect, but because the area is too huge, it will hardly affect humans in a short period of time.

But the dungeon ecosystem is small, only [-] hectares.

Whether it is humans, trees, plants, animals, etc., they will continuously produce carbon dioxide, and it is far from enough to only use plants to absorb it. It is too expensive to use the autocirculatory system to completely absorb it.

Using Portland concrete or a superior variety can perfectly solve this problem!

Mei Shufang said: "In the later stage of the ecosystem, we can use this characteristic of concrete to absorb carbon dioxide in the underground city."

Xu Qiu nodded.

The most mature at present is the carbon curing technology.

This technology is to precisely inject the waving carbon dioxide into the concrete being mixed. During this process, the carbon dioxide undergoes a chemical reaction to become a fixed mineral, which is permanently sealed in the concrete.The mechanism of its occurrence is that carbon dioxide and water molecules react to form carbonate ions.

The carbonate radical reacts quickly with the calcium ions diluted in the concrete to form nano-scale calcium carbonate minerals.

In this way, the carbon dioxide can be permanently bound in the concrete and will not be released back into the atmosphere.

Xu Qiu had a thoughtful look on his face, and said, "Carbon curing technology is not enough!"

"We just solved the problem of too much carbon dioxide, but not too little carbon dioxide!"

The more brutal method is to burn fossil fuels wantonly in the underground city, and the carbon dioxide produced will be terrible.

But this method is impossible to use in reality. In addition to seriously affecting this small ecology, the combustion of fossil fuels will also emit a large amount of toxic gases.

Once these poisonous gases are expelled and gather in the dungeon, everyone will become a victim.

Xu Qiu said: "So, we need a brand new technology... that can absorb when there is too much carbon dioxide, and release the stored carbon dioxide when the carbon dioxide is below a certain level!"

"Use materials with such characteristics to create an entire dungeon!"

The crowd was horrified.

Treat all houses as part of the ecosystem? !

If this is the case, then [-] hectares of land is not too small!

Even dense buildings are part of maintaining the stability of the ecosystem. Under such large-scale artificial regulation, maybe this artificial ecosystem can really be successful! !

Mei Shufang, Huang He and others were all shocked by this wonderful and bold idea!

They seem to see that in the near future, in the underground city, countless buildings will rise from the ground, and each building, as if it can breathe, forms part of the underground city's own circulation system...

Countless old men with yellow hair and bream back looked at Xu Qiu with disbelief, and all of them sat on their chairs dumbstruck.

It was so unexpected to turn the building into a link of the ecosystem.

Xu Qiu's face remained unchanged, and he continued, "The autologous circulatory system, or dungeon artificial ecosystem, is theoretically feasible."

"To do all of this, one condition must be met, the system is stable."

Mei Shufang was too familiar with all this. After getting Xu Qiu's permission, she expressed her opinion, saying:

"The behavior of an ecosystem is ultimately determined by the energy flow through the system and its internal material circulation, and Berry Guo once proposed a model of a linear trophic chain. In that model, any two levels of biomass and energy flow are Bilinear sum of biomass of all existing species."

"And, the system is stable only if species energy increases with ascending trophic chains."

"Although producers generally have lower species energies than consumers, there are only small or no significant differences in the species energies of different consumers."

"The implication of this model is to remind us that the stability of trophic chains is fragile, and it is affected by small differences in the energy of different levels of species."

"But I think this is due to ignoring the movement of organisms to decompose inorganic substances! In this model, a very important link is missing-decomposition!"

"However, this is also the most helpless part. These things are basically impossible to measure."

Xu Qiu frowned. This seemed to involve a problem at the level of physics, and said: "According to the law of indestructibility of elements and matter, if all the factors in this model follow a certain law, then it should be able to guarantee stability."

At this moment, Liu Mingying, who was sitting in the second row, suddenly widened his eyes.

The general designer of the "Moon Palace Project" has been studying the problem of closed ecological circles, and has built hundreds of closed models!

And the most practical model among them is based on the law of indestructibility of elements and substances! !

"Director Xu!"

Liu Mingying boldly stood up, and she said excitedly: "Director Xu, I am Liu Mingying, the chief designer of 'Moon Palace No. !"

Xu Qiu, Mei Shufang, and everyone present focused their attention on this [-]-year-old expert in outer space ecology and space base ecological construction.

Xu Qiu looked over, gave him an approving look, and said, "Professor Liu, please tell me!"

Liu Mingying closed his eyes and said: "We assume a linear chain of several nutritional levels and use X to represent the number of moles of a specified element at the i-degree nutritional level."

"According to the Ulnowicz-May model and predator and inorganic material uptake and uptake, following the model of the Lotka-Voiterra~ subterm..."

"Our basic assumption is that at the i-degree level, substances are directly converted into inorganic substances at a certain rate. Xo is used to represent the mole number of a certain element in the storage table of inorganic substances. Then the evolution of the ecosystem can be described by an equation!"

"Among them, as you mentioned the law of indestructibility of elements and matter, this model is easy to imagine under the premise that all the data satisfy the above equation!"

"When using carbon elements, the respiration rate constant, photosynthesis rate constant and the existing amount of Xo in carbon dioxide can be obtained. M

"For other elements, it means the common effect of natural death and decomposition!"

"The self-evident assumption is, first, that the presence of decomposers has no appreciable effect on the rate of supply of substances for decomposition. Second, that the rate of decomposition is so rapid that the time error of the decomposition process can be neglected. This assumption, which may be reasonable for the tropics and subtropics, is not necessarily justified for northern systems, where the decomposition time is calculated in years!"

"As long as the system of the above equations is in a stable state, all existing quantities are positive, then this system is always stable!!"

Liu Mingying's words made Mei Shufang and the others' pupils dilate, and their expressions were full of surprise.

They are all experts in this field, and they can understand everything.

If the equation in Liu Mingying's mouth is true, it will be the theoretical support for the dungeon's own circulatory system! !

Liu Mingying said to herself in a daze, "There are too many things involved, too many! Soil ecosystem, state factor equation, forest site, and multiple ecosystems in the dungeon..."

"On the blue star, there are extreme ecosystems such as tundra ecosystems, estuary ecosystems, and alpine meadows. In addition, lakes, oceans, swamps, land, and sand dunes are also important components. They are indispensable. If you want to balance this Equations, difficult, but not unsolvable!!"

Huang He looked solemn and said, "But if the equation cannot be balanced, we will witness a mass extinction!"

"Creatures on land die inexplicably."

"The fish in the pool overpopulated, resulting in a lack of oxygen in the water, and they all died."

"Bees are extinct, the reproductive and pollination pathways of plants are almost interrupted, and a large number of plants are also dead. On the contrary, ants and beetles reproduce unscrupulously and flood, and in a short time, these tenacious animals will also become extinct"

.

Everyone is also thinking, as long as the equations can be coordinated and stable, then the closed ecosystem can also be maintained in a stable state.

It's just that the amount of work required in this process may not be able to be completed by humans at all.

It took Blue Star billions of years to evolve today's system. Is it really possible for the Dragon Kingdom to complete all this within ten months?

Xu Qiu's voice was calm and calm, and said: "This formula is the key and the foundation for us to overcome the self-circulation system of the dungeon."

"Professor Liu, your research on Moon Palace-[-] is currently the furthest project in the field of man-made ecological circles in Longguo. It can be said that in this field, your achievements are the highest."

"The Moon Palace Project has a certain similarity to the ecological system construction of the dungeon. This equation is related to the ecological construction of the entire dungeon. It is the foundation and the skeleton. It is indispensable." He could hear the meaning in Xu Qiu's words.

Mei Shufang stood up, and said in a hoarse voice, "Director Xu, Professor Liu is more experienced than all of us in this equation. Moreover, she has been conducting research on the Moon Palace Project. It can be said that she has never Interrupted the pace of exploration of the artificial ecosystem..."

"I think that this significant project should go to the capable! Professor Liu will do his part!"

Seeing Mei Shufang's voice, Huang He and Ouyang Tao also hurriedly stood up and said, "We also agree with Teacher Mei's suggestion! Although Professor Liu is young, he dares to do it when he is young! Taking buildings as the breath and pulse of the ecosystem, etc. A great idea cannot be put into practice without a ruthless spirit!"

Many high-ranking and powerful people stood up one after another at this moment to express their support.

In this kind of occasion, the status is not high enough to even have the qualifications to stand up and speak.

Xu Qiu silently nodded, this result was exactly what he wanted.