Live Wilderness Adventure

The ninth day of Banna Rainforest Survival is late at night.

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Inside the shelter, a slight snoring sounded.

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On the soil **** not far away, a huge black shadow slowly protruded out of the bushes, staring at the shelter. A few minutes later, there was the sound of a thin rope turning the soil.

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The snoring stopped.

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Bi Fang opened his eyes and stared blankly at the roof of the shed. He sat up and scratched his hair. He picked up a piece of dry wood that was cut into a fish scale stick and dipped it in oil. After lighting it, he went outside the fence.

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Under the light of the fire, the sound of turning the earth stopped abruptly.

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After staring at each other for a few minutes, Bi Fang stumbled into the bamboo raft door and threw the torch into the bonfire.

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continue to sleep.

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. . . . . .

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The tenth morning.

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The sun shines in from outside the door.

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Bi Fang yawned, chewed on lemongrass mixed with charcoal, bit the stick for a while to brush his teeth, and washed his face with clean water.

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After taking care of personal hygiene and filling in charcoal ash and soil, Bi Fang started the live broadcast.

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"Morning, brothers."

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[Morning Boss Fang! 】

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[Why are there no sisters, woo woo woo]

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[Shouldering and cold, when can we women stand up]

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[Did the water monitor lizard attack at night? 】

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[Looking at Lao Fang, it seems that he slept well? Water monitor lizard gone? 】

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"It didn't go." Bi Fang greeted the drone to follow behind him and came to the opposite position from the door.

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There was originally a small soil **** covered with shrubs. There was a small stream and a large river in front, and there were soil **** shrubs in the back. The shelter could be regarded as a mountain and a river.

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But now, the small soil **** has become completely different. A dark cave appeared at the bottom of the soil slope. The dirt was dug out and the money was piled up in a circle in the cave, like a trench.

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"It's in there now."

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This is. . . . . .

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Zhou Weisheng straightened his waist and looked at this scene in surprise.

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Due to the appearance of water monitor lizards, Zhou Weisheng got up early in the morning to watch the live broadcast, just to get a better understanding of the state of the water monitor lizards in his reserve.

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Usually, the team research and tracking are carried out in large and small packages. At least seven or eight large teams are set up to set up camps. All kinds of instruments and animals are scared away when they see it. It is rare to sneak in secretly like this, and the opportunity is rare.

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Now, it seems that they are nesting here?

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Monitor lizards like to lay their eggs in tree holes and caves, which is indeed a familiar style.

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Bi Fang said speechlessly: "I was woken up once last night. I came out with a torch and saw that it had dug a hole here. I will look again this morning. The hole has been dug, and the whole family is there. Inside, I don't know when the fish in my fish pond will be eaten."

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Bi Fang took a few steps around and came to the front of the fence.

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He had already cleaned up the bushes in front of the shelter, leaving an open space. There were three large pits on the ground, all of which were half a person deep, and each had a different function.

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One pond for fish, one for iron bacteria, and the last for clay.

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If there is a harvest in the fishery, it must be taken away in time, otherwise a large number of fish will be crowded together, which will affect the subsequent harvest.

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There were originally six fish in the fish pond, but Bi Fang ate two yesterday, so there should be four left.

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As a result, when I saw it this morning, there were only two left. Bi Fang had no doubt that the culprit was the water monitor lizard not far away.

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It seems to have sensed some kind of resentment.

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The water monitor lizard emerged from the cave, staring at Bi Fang motionlessly, spitting out a long letter.

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"Your sister's."

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Bi Fang rarely made a big swear word, kicked a small clod, and smashed it on the soil slope, splashing a small piece of dust.

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【So deep resentment】

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[Wori, our hero and heroine are living together now? 】

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[Water monitor lizard: Oh yeah, the cafeteria is closer to the door, and fresh fish can be produced every day! 】

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[Yes, I did it, what can you do? Come hit me (paws vigorously slap the national first-class protected animal certificate)]

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【Bengbu live】

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[Is Guoyi so arrogant? Give me one at any time, I am also a first-class waste waiting to die, woo woo woo]

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Bi Fang shook his head, forget it, let it go, there is a big project waiting for him to do today.

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Perhaps the sun today is too good, and there is even fog in the Banna rainforest in the early morning.

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Looking at the mist in the forest, Bi Fang suddenly remembered the miasma he mentioned before, and a flash of lightning flashed through his mind.

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"I finally understand why many people think that miasma is a poisonous mist, and the ancients would attribute the cause of illness to words with obvious gaseous connotations like 'miasma'!"

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【Why? 】

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Many people scratched their heads and cooperated to ask questions.

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"The so-called running water does not rot. On the one hand, the flowing water involves oxygen into the water, and on the other hand, the water with low oxygen content below is turned up to absorb the oxygen, so the organic matter decomposes quickly, and it is not easy for microorganisms to accumulate."

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"Moreover, flowing water will wash away insect eggs, making it difficult for mosquitoes to breed. Therefore, although large rivers have a lot of water and bring moist air, they may not directly cause disease."

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Gu Zhen, "When the ancients talked about miasma, they generally didn't refer to the agricultural areas in the open valleys, but to the surrounding mountains. It can be seen that miasma cannot be simply described as hot and humid air."

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Bi Fang added some water to the clay pit and continued stirring.

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Evaporation overnight made the clay pit a little stagnant.

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"Stagnant water is the most likely to breed bacteria, which requires the existence of many depressions lower than the surrounding area to hold rainwater, and such depressions are common in most places."

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"Even if the surface is sloped, fallen trees and fallen stones often cause small depressions. Last year, I went to the Daxingan Mountains and saw many similar depressions, puddles, or small swamps. Of course, they are all frozen."

What Bi Fang said was the time when he went to Mohe, the ground was freezing cold, and the ground was full of frozen "ice puddles". Combining what he had seen and heard this time, he completely understood why the "miasma" was "the miasma". ", rather than "miasma water" or "miasma soil".

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"It's just that there is little rainfall in the north, and the depressions will dry up on sunny days and freeze in winter. In the south, there is often more rainfall and high temperatures, so the depressions have become a 'bacterial soup' rich in organic matter and a 'nursery' for mosquitoes."

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"These become a serious threat to humans, mammals that have no body surface hair. It is especially terrifying for northerners who are not adapted to the southern flora, bringing harm far beyond 'acclimatization'."

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"Usually these depressions emit water vapor, which re-condenses into fine water droplets on the top of the forest, forming fog. These fogs are therefore a sign of mosquitoes and bacteria breeding, and are considered 'miasmas'. Coupled with many large groups of mosquitoes, it can be seen from a distance. Like clouds, the ancients thought there was something wrong with the air in the south."

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In the old days, it was smoky and rainy, and it is miasma to talk about a tiger's discoloration.

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From a purely geographical point of view, Bi Fang understood for the first time what the so-called "miasma" is.

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The fog often appears between the mountains and forests,

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Before, he only knew that this was a misnomer by the ancients for bacterial and parasitic diseases, but he didn't know why such a misunderstanding occurred.

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At this moment, seeing the fog in the forest, and thinking of what I saw and heard in Mohe, I suddenly realized.

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"You still have to read thousands of books and travel thousands of miles."

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Bi Fang wiped the mixed liquid of water mist and sweat on his head, dug out the mixed clay, and shoveled it into the dustpan frame woven by rattan.

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"Three pits are not enough, we need to dig another one to build the furnace."

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"Temperature is the key to iron making. The underground furnace can accumulate heat more efficiently, and the deeper we dig, the higher the furnace will be."

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The length is one piece, and the deeper the underground, the more the overall length of the furnace is in disguised form.

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The fire will be more vigorous.

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"Using the chimney effect, the higher the furnace, the faster the airflow, and the faster the flow rate, the lower the pressure, and the pressure difference between the furnace and the bottom will make the fire more prosperous, and our combustion rate will also increase."

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[666, it's been ten days, and finally it's time for some dry goods! 】

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[There are eleven days left, can Lao Fang have time? 】

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[Big brother, go back and apologize to your sister-in-law]

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[Wait for the reactor, when will a nuclear furnace be built? 】

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[Nuclear reactor? It's coming soon, don't rush it]

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[I didn't understand a single sentence of such a long passage, the storm was crying. 】

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"Ha, can't you understand?" Bi Fang scratched his eyebrows, the black mud on his hands made his face smudged, but he didn't care at all.

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"To put it simply, everyone knows the flow of hot and cold air. This also belongs to junior high school knowledge. Heat expands and contracts cold. Therefore, under normal conditions, cold air of the same volume will be heavier, it will fall, and hot air will be more It's light, so it rises, creating convection."

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The audience nodded, which was easy to understand.

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"The bottom of our furnace is burning, the air will heat up and expand, and then rise, and the cold air above will sink. The relative flow rate depends on the temperature difference. As long as the chimney is high enough, the air above us will be closer to the natural temperature, It's colder, the temperature difference is bigger, and the flow speed is faster, can you understand?"

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The audience continued to nod.

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"Once the air is flowing, and the speed is fast enough, we have enough oxygen to support the combustion, increasing the combustion efficiency and temperature, which is equivalent to a natural blower."

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Using the principle of hot air rising, hot flue gas is discharged from the upper air outlet, and the fresh cold air outside is drawn in from the inlet, which increases the oxygen required for fuel combustion, makes the fuel more fully burned, and enhances the fire.

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This is the principle of the blast furnace.

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Blast furnace ironmaking, it sounds amazing, but in fact it literally means iron made with blast furnaces.

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One of the main reasons for limiting materials throughout the ages is the combustion temperature and the high temperature resistance of the furnace.

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The audience was stunned.

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[Fuck, I understand! 】

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[Damn it, is it so scientific? I always thought that Boss Fang was from the metaphysical world, dog head]

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[You think I am science, but I am actually metaphysics! 】

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[There are always people in the guise of science who show us magic. 】

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"The same is true for high-rise buildings. The hot air caused by low-level fires will flow up through the passages, allowing high-heat gas to continuously accumulate at the top. As a result, the fire is caused by convection through the air, creating another on the top floor of the building. fire."

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"So to escape from fire, don't run up, you must go down."

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Bi Fang dug a hole that could accommodate his half body and began to build a stove out of clay.

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[Is it really reliable for iron bacteria to make iron? It feels to me like Magneto sucking out the iron element in the human body]

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[I also think it's a bit mysterious, but if I say no, I bet fifty cents, and Boss Fang will hit me in the face. funny】

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"There is no problem, whether in theory or in practice, it can be successful."

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Bi Fang piled a large piece of clay on the ground, spread it out in the pit, and glued a layer around it.

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"Iron bacteria can oxidize ferrous iron to ferric iron and obtain energy from it. In water, it can oxidize ferrous compounds and cause ferric hydroxide to precipitate."

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"The sediment collects around the bacteria and produces a lot of brown slime, which causes pitting and rust formation on equipment and pipes, which is often the brown rust we see inside pipes."

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"Because of this, it can oxidize ferrous hydroxide and ferrous carbonate dissolved in water to form ferric hydroxide and deposit, which can concentrate and accumulate iron in the environment. Many scientists also believe that it may be natural limonium iron. participants in the formation of mines.”

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"The final iron hydroxide can be used to make iron!"

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