Chapter 124 Mathematics is just going in circles?!(2/3)
If Qiao Yu didn't understand something, he would explain it in a few words.
In this way, the morning passed quickly. At noon, I asked the junior fellow in the laboratory to bring everyone lunch boxes.
"Okay, I probably understand. I think this is not difficult. Just build a differential equation model, perform piecewise fitting with the data based on your temperature dependence analysis, and then process the data.
The abnormal fluctuations in the rate constant may be caused by the large error in the experimental data under high temperature conditions. I will make adjustments in this regard. By the way, I feel that the most critical point of your experiment lies in the step of reducing formic acid to generate formaldehyde.
And I think the overall reaction rate is unstable at 500K, most likely because of this step. The increase in temperature will make this step a bottleneck for conversion. Your results are always unstable, which may be related to the activity of the catalyst.
So you just need to work on this step, and don’t worry about the other steps. There should be no problem. My suggestion is to try to increase the activity of the catalyst surface combined with HCOOH. Give me three hours for the specific model."
After eating, less than half an hour later, Qiao Yu gave his opinion.
"Huh? Three hours? Also, can you determine where the problem lies?" Liu Hao was a little confused.
Qiao Yu pointed at the data and said: "Brother Liu, you should have studied mathematics as an undergraduate in the School of Chemistry, right? This is actually simple differential equations, linear algebra, statistics and data analysis.
The papers you recommended all have something to do with reaction path optimization. After analyzing your data, it is probably this problem. This thing is really not difficult, and the overall reaction rate can be calculated with a system of ordinary differential equations.
Then use your data to perform Arrhenius fitting for each temperature segment separately to find the relationship between the rate constant and temperature. Perform regression fitting on the data for each temperature segment separately, such as nonlinear least squares method.
Then use regularization technology to reduce overfitting under high temperature conditions, and design a penalty term to be added to Ki and added to the objective function... In short, you can rest assured that three hours is enough. I will get it done before four o'clock, you can use it first, I think it's a big deal The probability is no problem."
Liu Hao fell silent.
On the other hand, other people in the office area who were still hard at work looked at Qiao Yu in surprise.
But no one said much...
It's not the first time that a guy from the School of Mathematics is so confident. Everyone is used to it. It's just that this guy is younger. After staying in the laboratory for a long time, he is actually very resistant to bragging.
Whether it works or not, we will know in a few hours. Everyone can afford to wait.
When Qiao Yu got into working mode, he naturally didn't care what others thought of him. He simply thought that chemistry was really simple.
As for Liu Hao, he had already called everyone else together and ran to the small conference room next to the group meeting to start the discussion.
"Did you all hear what Qiao Yu said just now? If it is really because of the catalyst surface activity problem in step three, we can directly infer the results through the catalyst formula we put in the previous experiments.
"It's not Brother Liu. That Qiao Yu just came into contact with chemical experiments today. Do you really think he is right? In the laboratory just now, he didn't even recognize the equipment." Zhang Haoyuan couldn't help but complain.
"They judged it through data, and it doesn't have to be a laboratory. Why do we have to stay in the laboratory? They can sit next to the computer and do calculations and guide us in our work. Can you have some idea in your mind?" Liu Hao? He glared at Zhang Haoyuan and said.
Qin Zhongliang pushed up his glasses and said, "Well, let me say a few words about that. In fact, I think what Qiao Yu said may be reasonable. In order to reduce by-products when we prepared the catalyst before, we used polyethylene glycol for surface modification. . Theoretically speaking, the purity of polyethylene glycol still has a great impact on the surface structure.
If polyethylene glycol is doped with impurities, or some incompletely polymerized monomers may indeed cause inhomogeneity in the polymer layer and affect the formation of porous structure. This will indeed directly affect the surface structure and activity.
We don’t seem to pay much attention to this. Each batch of polyethylene glycol we receive is used directly according to the specifications marked by the supplier. We have not done a purity test, right? I haven’t done it anyway.
And one thing everyone should know is that PEG is stable at a certain temperature, but it may decompose at a high temperature of 500K, causing the surface structure to change or even become deactivated. Although we chose high molecular weight polyethylene glycol, There’s no way to guarantee that the quality of every batch is up to standard, right?”
Suddenly no one said anything in the conference room.
Who would bother to do a purity test for such commonly used materials... They are all used directly after receiving them. If you put it this way, it seems possible...
Liu Hao took a deep breath, and then said: "Okay, let's try it first. This time we don't need polyethylene glycol for surface modification. Since Qiao Yu said that the key to the third step is to increase the specific surface area, let's just apply activated carbon directly. .”
"But activated carbon cannot provide precise acid-base control, so the selectivity is still a bit poor, right?" Qin Zhongliang raised objections again
"But activated carbon is cheap and convenient. Let's see if this is the problem first. If the results are good, we will directly use carbon nanotubes." Liu Hao made the final decision. Carbon nanotubes are for laboratory results.
After all, the cost of this thing is very high. If it really needs to be promoted industrially, the cost will increase.
But if used in the laboratory, the conversion efficiency may be greatly improved. Moreover, the technology can be retained for now. Maybe in the future, when the cost of carbon nanotubes comes down, they can be used in industry.
If you can achieve results with carbon nanotubes, you can then start looking for other low-cost materials to replace them. Such as silicon dioxide, alumina and other materials... The most critical thing now is to determine whether the problem really lies here. .
So the small meeting ended, and the others ran to the laboratory to get busy. As for Liu Hao, he returned to the office area and sat next to Qiao Yu.
Looking at Qiao Yu in front of the computer, who had already started programming seriously, Liu Hao was distracted for a moment.
If the problem that had been bothering them for more than half a month was solved easily by this sixteen-year-old kid... He suddenly felt a little embarrassed to face his boss when he turned around.
Understand the experimental process, read a paper, and then analyze the data, and you can directly find the key points. In Liu Hao's view, this is simply a holy body of chemistry, and he is born to be a chemical conductor...
"Senior Brother Liu, you don't have to worry about me, I'll be here for a while."
"Oh, it's okay, I was just checking the data. Hey, your cup is empty? I'll get you a glass of water. By the way, do you want some tea or coffee?" "Well, milk tea?"
"Um...what does it taste like?"
"Just the one on the third floor of the Home Canteen with a particularly strong milk flavor will do." "No problem. I'll have it delivered right away."
Soon, the only master's student in the research group took off the gloves for washing bottles and hurried out of the laboratory. Twenty minutes later, he brought back six cups of milk tea and swiped Liu Hao's card.
Drinking the sweet and rich milk tea, Qiao Yu felt more focused. He finally took the last step, stretched and then stood up.
"Okay, Senior Brother Liu, just use this model. If you have any questions, please contact me on WeChat at any time. I will help you make adjustments." "Is that done?"
"Well, I think there should be no problem. I just went through the data again. Although I don't know what exactly caused the 500K fluctuation, according to the data analysis, there may only be a problem in that step. As long as you can guarantee the response If the activity is consistent, the subsequent results will definitely become stable. I’m leaving now.”
"No, it's almost time for dinner. Let's have a meal together."
"No, I have something else to do. Brother, you don't know. I still have a project at hand, and I am cooperating with Huaqing. That one is really a headache. It's better for you. The problem given is easy to solve. Do Sheva The two-dimensional generalization of Lai’s theorem, hey...thinking about it makes my head feel big.”
"Then...shall I give it to you?"
"No, I'm going to clean the car and then go back. Goodbye, senior brother." "Goodbye!"
Watching Qiao Yu walk out of the laboratory with relaxed steps, Liu Hao was filled with emotions.
Of course, at this time, he couldn't say whether it would be successful or not. Although Qiao Yu pointed out the problem and the materials were ready, it would take another day to re-do the basic characterization of the activation, and it would take about a week to complete the preliminary test.
As for formal experimental data collection, it normally takes one or two weeks. But since they have already done formal collection before, this time can be greatly shortened.
After all, only the reaction conditions under 500K are done, and the time required to do the three types together is different. If the direction pointed out by Qiao Yu is correct, it can be verified in three days.
Seeing Qiao Yu's confident look, Liu Hao suddenly felt relaxed. Without thinking about other messy things, he could successfully finish this topic and he could have a good rest for a few days.
"Brother Liu, this Qiao Yu is so cool. He also cooperates with Huaqing? Are you bragging?" A master's degree student who had gone to buy milk tea came up to Liu Hao and couldn't help but comment. "It's natural that someone is cool." "The truth is, you can search his name on the Internet later, and then see if he is pulling him or not." Liu Hao glared at his younger brother and lectured him.
"Huh?" The young man felt a little aggrieved. In the past, Brother Liu always stood with them and spoke unanimously to the outside world, including Professor Lu, who he often collaborated with. Everyone complained about it and it was okay. Only this time he was scolded for complaining.
"Ah, what? If you are so young and only use your brain, you still have to wash the bottles every day? If you are not convinced, go to the Institute of Mathematics for further study, take the time to learn this ability, and you can do this every day in the future. I can even clean your shoes when you enter the laboratory." Liu Hao criticized again.
The young man shook his lips in embarrassment, then walked aside silently and looked up his name online.
After a while, I probably understood what it means to be spinning, what it means to be unfair in the world, and what it means for men to be afraid of getting into the wrong profession... No, it's not that he really wants to study chemistry. The main reason is that the School of Medicine doesn't love him...
Hey, that Qiao Yu is not a 16-year-old student, he is the future’s thigh!
At this time, Qiao Yu had already walked out of the chemistry laboratory building, still feeling a little uneasy. He still felt that he still couldn't level the bowl of water.
Hua Qing came up with high-intensity mathematical propositions, but Director Tian assigned him such a simple task... Of course, this was not his choice, so he should not be blamed.
It's just a bit emotional. This is probably because he had no choice but to let his heart shine on the moon, but the moon shines on the ditch, right?
But then again, although this task was simple, the rewards were still great. For example, he learned how to make money by publishing papers. He was too embarrassed to talk to Director Tian about this, so after Qiao Yu returned to the research center, Take the initiative to go up to the third floor, Senior Brother Chen's office.
Although Senior Brother Chen's scientific research ability is average, he has been in school for a long time and knows a little bit about everything. He is the best person to inquire about information.
Moreover, at this time, even if there was a meeting, it was over, so I could take him to have a meal with me and study this matter carefully.
For example, Qiao Yu didn't originally plan to write a paper specifically on his newly discovered conjugation singularity. He thought it was meaningless. But if this paper is published in a district SCI school and really wants to award 100,000 yuan, then This paper must be written.
And it is very simple, it is nothing more than precisely defining this type of special singularity through mathematical expressions.
Then he analyzes a set of methods for constructing such singular points, and discusses how such singular points are applied to the characteristics of the Langlands Program in geometry. This is a very good paper. Qiao Yu feels that he can solve this problem in one day Done.
Who can resist the temptation of making 100,000 yuan a day?
And this is just the beginning. If necessary, he can publish another paper in the future that extends this type of singular points to higher-dimensional algebraic varieties. By the way, he will also propose the types and properties of other possible singular points. Who dares to say this? It's meaningless?
..
"Bang bang." Hearing the knock on the door, Chen Zhuoyang stood up and opened the door. He was very surprised when he saw Qiao Yu.
Although the two have been neighbors for so long, this is the first time that Qiao Yu has come to his office. In the past, he would go downstairs to find Qiao Yu. "Junior brother, why are you here? At this time, it's time Don't you want to treat me to dinner?" Chen Zhuoyang joked.
"Yes, I just want to treat senior brother to a meal. Let's go to the school cafeteria and treat senior brother to a big meal." Qiao Yu said grandly. As long as he invites him to eat in the school cafeteria, Qiao Yu is really very generous.
Firstly, the meal card given to him by Director Tian has money in it every month. Secondly, eating in the Yanbei University cafeteria is really cheap, and he doesn’t care about any treat. Anyway, the money in the card cannot be used up.
Not to mention that he also has a Huaqing all-in-one card, which has more money.
"No, little junior brother, if you have anything to do, just tell me. Now you have to treat me to a meal. To be honest, I'm a little panicked." Chen Zhuoyang said. My junior brother has become so famous. If he encounters trouble, it will definitely not be him. It can touch porcelain.
"Hey, it's mainly because I saw Senior Brother Chen speaking for me on Zhihu. I'm very grateful. I just want to treat Senior Brother to a meal. It's such a simple thing. Don't think about it being complicated." Qiao Yu glanced at Wu Dan
Senior brother, he said grandly.
"Well, is there a possibility that the one on Zhihu is not me? "Haha..."
"Forget it, let's go. Wait for me to put on a coat." "Okay."
...
After chatting for a while, Qiao Yu got to the point: "By the way, senior brother, I heard today that there are cash rewards for publishing papers in the School of Chemistry? SCI will give you 100,000 yuan for one area. Is it true? Let's count.
Are there any similar rewards at the research center?”
Chen Zhuoyang didn't think too much and answered directly: "That must be true. For example, if your paper is published on Ann.Math, there will be a reward of at least 200,000 yuan. If Director Tian wants to help you apply for more,
, three hundred thousand is also possible.
To be continued...