ask sword 2

Chapter 81 Centrifugal
"Doctor Li Xiao?"

The old housekeeper of the Duke Yan's mansion looked at Li Ang who suddenly visited with a look of astonishment.

"How is Duke Yan?"

Li Ang said, "I found a way."

"plz follow me."

The old butler suddenly became serious and led Li Ang to the lobby.

Along the way, you can still see the medicine pot and smell the lingering smell of medicine.

The descendants of the Yan family, including Yan Lin, were standing in the lobby, looking helplessly at Yan Yundang, who was sitting with a golden sword on his face—

His face was still yellow, and he closed his eyes, listening to what the Taoist man in front of him was saying.

". The general was born in Shuozhou, and naturally he should return the leaves to their roots. In the northwest of Shuozhou, there are two mountains, one is Pingding Xingshan and the other is Gaoshan. There is a ditch in the middle called the earth. The wind disperses, and the boundary water stops."

Well, this is already looking at the cemetery Feng Shui.

Li Ang complained in his heart, but it wasn't very strange.

The average life expectancy of people in the country of Yu is not very high, and it is very rare in the old age. Most of the old people will let their families prepare coffins, shrouds and cemeteries early to prevent them from leaving in a hurry and being buried in a decent manner.

The reason why Yan Lin and others were sad was that Yan Yundang, as a martial arts master, fell ill too suddenly and did not give them any psychological preparation.

The housekeeper stepped forward lightly and said softly, "Lang Jun, Dr. Li Xiao is here."

"Ok?"

Yan Yundang opened his eyes, looked back at Li Ang, and said with a smile: "Li Xiaolangjun. The method you said last time is really good. Those pigeons will get sick if they only eat polished rice, and they will recover after eating brown rice.

It seems that I really have a problem with my stomach and I can't absorb the strange substances you mentioned. "

"The Duke of Yan,"

Li Ang cupped his hands and said: "The younger generation is here for this - I have found a new method, which may relieve the pain."

"what?!"

Before Yan Yundang said anything, Yan Lin took two steps forward excitedly, "Doctor Li Xiao, do you really have a solution?"

Li Ang nodded and said, "It's just a way. The probability of a successful cure is about [-]%."

Yan Yundang's jaundice symptoms did not subside, which proved that it was not a pernicious anemia caused by a lack of folic acid.But because of vitamin b12.

"Seven percent?"

Yan Lin turned her head to look at Yan Yundang. During this time, Yan's residence invited many famous doctors to prescribe some medicines including the treatment of stomach and intestines, but Yan Yundang's pernicious anemia still failed to improve.

"Father, why don't you give it a try."

"Um,"

Yan Yundang took a deep breath. Although he was ready for death, if he could live another day and watch his children and grandchildren grow up, he would fully accept it, "Come here, wait for Doctor Li to open the door. prescription"

"Guo Gong, there is no prescription for this medicine."

Li Ang said: "What I need is fresh pork liver, the more the better;
Cool boiled cold water, the more the better;
Several bottles of pure wine produced by the school;
Four ceramic mortars; four thin balsa boards cut into circles; sixteen sturdy strings;
A drilled awl; eight chopsticks;

four fine cloth bags;

a casserole and a porcelain bowl;
a carload of white clay;
In addition, 36 glass tubes are needed - basically like this. "

Li Ang asked the housekeeper for a pen and paper, and drew the top, side, and front views of the small glass test tube on the paper, and marked the dimensions on the three pictures.

Li Ang asked, "Can this kind of glass tube be made at the level of Chang'an's craftsmen?"

"can."

Yan Lin glanced at it, then got up and said to Li Ang: "The best glass workshops and Liuli workshops in Chang'an are all dedicated to chanting masters, who can use mind power to change the shape of fiery glass and make exquisite instruments."

"That's good."

Li Ang breathed a sigh of relief, "After all these are ready, we can start making medicine. By the way, General Yan, in the end, we still need four strong men and a light-tight room."

"it is good."

Yanlin immediately asked his subordinates to prepare - although these things were irrelevant, after seeing hundreds of pigeons fall ill and recover according to Li Ang's experimental method,
He could only trust Li Ang.

"Doctor Li Xiao,"

The Yan family members were all nervous and busy, but Yan Yundang sat on the seat calmly and asked a little curiously, "Isn't montmorillonite white clay used to stop diarrhea? Does it take a whole car?"

Li Ang shook his head, "This time it's not to stop diarrhea, but to filter."

Concerning Yan Yundang's illness, the entire Yan Kingdom's mansion was running at full strength, and soon everything was ready for Li Ang.

"I need to make medicine in a dark room, please cover the windows with straw mats or something.

If you want to watch from the side, you can enter the house together, but only one oil lamp can be lit. "

Li Ang said something casually and asked the servants of Yan's residence to enter the sealed room with all the utensils.

Yan Yundang followed curiously, but Yan Lin couldn't beat him, so he had no choice but to follow with an oil lamp.

"The dosage of this medicine is quite large. I will only demonstrate it once. You should keep it in mind. In the future, it will be up to you to obtain medicine for the imperial system of the Yan Kingdom."

Li Ang said to the servants of the Yan House in the room, and by the light of the oil lamp in Yan Lin's hand,
First wash your palms with pure wine, and then wash the fresh pork liver with pure wine to remove the blood on it.

Then take the scissors, cut the liver into pieces, put it in the mortar and grind it quickly and carefully, adding water every now and then to grind it further into crumbs.

The significance of this step is to crush the pig liver rich in vitamin B12, and the next thing to do is centrifugation.

'The centrifugation procedure in a normal laboratory is to pour the pig liver fragment solution into a centrifuge tube and put it in a centrifuge.Spin at 3500 rpm for 10 minutes.

The solid debris and liquid in the pig liver solution were separated.Obtain a supernatant with a higher vitamin b12 content.

And in the absence of a modern centrifuge, one can only make one.'

Li Ang took the awl, drilled four button-shaped holes in the middle of the thin circular wooden board, and used two strings to pass through the holes and loop them back, and fix them on the chopsticks on both sides.

Yan Lin wondered: "This is."

"Centrifugal, spinning flywheel children's toy."

Li Ang picked up two chopsticks with a smile, flicked the string lightly, held the chopsticks and pulled them away, and the circular wooden board in the middle immediately turned on its own.

Nice, smooth rotation.

Li Ang put down the flywheel toy with satisfaction, poured the pig liver solution into glass tubes of the same size, and plugged the cork stoppers. A total of eight glass tubes were filled.

And each glass tube is firmly tied to both sides of the circular Frisbee by perforating the wooden board with ropes.

Achieving the same effect as balancing weights in a laboratory centrifuge.

Next.
Li Ang picked up the flywheel toy, held the chopsticks and pulled and closed it, causing the circular wooden plate to rotate continuously, faster and faster.

This is the most primitive and simple artificial centrifuge in Li Ang's otherworld memory, but the effect is not bad.

The centrifuge was invented by Saad Bhamla, a bioengineer at Georgia Tech.

Conventional centrifuges spin the drum, creating centrifugal force that separates the fluid into layers within the sample tube by density.All centrifuges run on electricity and are bulky and difficult to transport.

And this kind of artificial centrifuge, which imitates the principle of children's toys, can achieve a maximum speed of thousands or even [-] using only ropes and plastics. It is the fastest rotating object driven by human beings.And it doesn't need electricity at all.

The original intention of the invention of the artificial centrifuge is to solve the problem of blood testing in Africa, to separate plasma in the shortest time, and to identify whether there is malaria parasite in the blood.

Now, however, it can also be used for centrifugation of vitamin B12 in pig liver solutions.

Li Ang unhurriedly pulled the wheel tool, and asked the other four servants to follow his own example, breaking the pig liver and centrifuging.

After 10 minutes, Li Ang stopped pulling the wheel, and took down the eight glass test tubes on both sides of the wooden disc,
Pour all the supernatant into the casserole, and pour a small amount of white clay into it, stirring constantly.

Clay has large specific surface area and pore volume, and has special adsorption capacity and ion exchange performance, which can adsorb vitamin B12.

When the clay had almost absorbed the solution, Li Ang put the clay into a clean fine cloth bag and drained the water.

Then pour the white clay that has absorbed vitamin B12 into a porcelain bowl, add water, and stir vigorously for 10 minutes.

Finally, the stirred solution was filtered, poured out,

A high content of vitamin B12 solution was obtained - because vitamin B12 is easily decomposed by light, all must be carried out in a dark room.

"finished."

Li Ang looked at less than a bottle of clear liquid extracted from dozens of pieces of pig liver, heaved a sigh of relief, and said to Yan Yundang: "This is the special substance extracted from pig liver.

This substance can relieve anemia and promote development - it can be given to poultry and livestock first, mixed with bran and fed for a long time, and it should promote the rapid growth of livestock to observe the effect. "

"no need."

Yan Yundang was also very straightforward. He read the whole process and saw clearly that Li Ang did not add anything special to the solution.
Only the pig liver, water, and white soil prepared by the Yan Mansion would not be poisoned—and there was no need for it. He knew the severity of Yan Yundang's pernicious anemia.

"give it to me."

Yan Yundang took the bottle, "Can you take it orally?"

"You can take it orally."

Li Ang nodded and said: "This medicine needs to be taken for life, once a day for seven days. After seven days, it is taken once every half month, and no process can be changed.

If it works successfully, within two or three days, you will feel a marked improvement, your appetite will increase, and your tongue pain will subside. "

Oral vitamin B12 can also relieve the symptoms of pernicious anemia to a great extent, but the effect is not as good as that of intramuscular injection, so it is necessary to increase the dose to prevent the recurrence of anemia.

"Use it for life"

Yan Yundang grinned, "I don't know how many years the old man will live."

After saying that, he raised the bottle and drank it proudly, wiping the corner of his mouth.

"Father,"

Yan Lin asked subconsciously, "What does it taste like?"

"What else could it smell like, the smell of blood."

Yan Yundang glanced at his son and muttered, "It's better than expected.

correct,"

He turned around and looked at Li Ang, "Doctor Li Xiao, I heard that you were sentenced by Xi Yangyu to be unable to cultivate for life?"

　Putting vitamin b12 in the bran feed can indeed promote the rapid development of piglets.

　　In addition, py pushes books.

　　"The First Cause of All Realms" by Pei Tugou

　　
　
(End of this chapter)