Chapter 94

After lunch time, Lu Zhou went back to the library and sat down.

Thinking back to what Professor Tang said, Lu Zhou calmly looked at the data and draft paper spread out on the table, with a thoughtful expression on his face.

Is it mathematical modeling...

The tip of the pen tapped lightly on the draft paper, and Lu Zhou's eyes searched on the A4 papers spread out one by one.

Senior Brother Qian provided him with comprehensive data, but in other words, it is messy.

There is only one road to the truth, and useless data will not broaden the horizons of researchers, but will become an obstacle to the truth.

"The problem is that the CNTs material affects the hydration reaction at an early age when it is incorporated into Portland cement, so the data of sample No. 2 are only useful."

"Comparing the FTIR images of samples 2 and 4 with sample 27 shows that this effect has nothing to do with the surface functional modification of CNTs materials, and the experimental data from samples 24 to 28 can be deleted..."

After crumpling a few pieces of A4 paper and throwing them into the trash can in the corner, Lu Zhou wrote down two lines of formulas on the paper.

【Di={kCMe/(2dμ)}·(2Pw/ρw)】

[Vi=(2Pw/ρw)^n]

Looking at these two lines of formulas, the corners of Lu Zhou's mouth curled up in a smug arc.

This is a good beginning……

It may not be within his professional scope to let him study the influence of carbon nanotubes on matrix materials, but if he is only asked to mine data from FTIR images and use mathematical tools to analyze the laws, he can still do it.

Time passed by, and the sky outside the window gradually dimmed.

During the whole afternoon, Lu Zhou completed the preliminary sorting of the data, and followed the idea of ​​mathematical modeling to establish a set of simple mathematical models.

This set of mathematical models includes multiple samples of CNTs materials on Portland cement hydration reaction speed, reaction temperature, sample mechanical properties, FTIR characteristic peak area and other parameters, as well as the relationship between specific parameters.

When setting up these formulas, Lu Zhou directly quoted the paper he had published in "Theoretical and Applied Mathematics Letters". Among them are several generalization theories about Fourier inversion transform, and it is found that a large amount of calculation can be unexpectedly saved here.

With the establishment of the first mathematical model, the difficulty of the original complex problem has dropped by a level, just like seeing the sun through the clouds.

Lu Zhou leaned back on the chair and stretched.

Staring at the Matlab interface opened on the screen, his pupils rekindled a strong fighting spirit.

In the next step, he will use code to compile this model into a program!

With the help of the power of the computer, dig out the "invisible" data buried there!

...

It seems that he has regained the state he had when he wrote Zhou's Conjecture proof paper. For three whole days, Lu Zhou maintained a two-point and one-line life in the library and dormitory. Apart from showing up at the cafeteria on time for meals, this regular life has hardly changed.

However, even so, by the evening of the third day, Lu Zhou had only completed the establishment of the second set of models. He had just used an iterative algorithm to find out that when CNTs materials are mixed with Portland cement, the hydration of each age Gradual law of the effect of reaction temperature.

There are still three unknown parameters to be calculated.

From an overall assessment, Lu Zhou only completed 60% to 70% of the work.

But this point has been reached, the rest of the work is very easy, just keep calculating and recalculating!

At half past five, Lu Zhou dropped his pen on the table and went to the cafeteria.

While walking on the road, I thought about it and called Senior Brother Qian.

As soon as the phone was connected, an urgent voice came from the other end.

"How's the progress?"

Restraining the urge to yawn, Lu Zhou rubbed the bridge of his nose and replied, "Give me another two days, and I'll definitely get it done in two days."

The difficulty of semi-scientific competitions like mathematical modeling is still incomparable with such serious scientific research projects. And the most important thing is that there are no teammates, from mathematical modeling to programming, and the final thesis writing, all the work can only be done by himself.

During the Mathematical Modeling Contest, at least there was a programming expert who could help write programs and use SAS to make charts, and a monster who could bring food and shout 666.

Thinking of this, Lu Zhou couldn't help but sigh in his heart.

Sure enough, there is still a need for a miscellaneous assistant...

"...Can you do it?" Senior Brother Qian's tone was full of doubts.

It's not that he doubts Lu Zhou's strength in the field of mathematics. After all, the prover who proved Zhou's conjecture bears the name of this great man.

However, the strength in the field of mathematics cannot be directly equivalent to the scientific research ability in other fields. Many people have spent their entire lives in pure number research and have excellent mathematical skills, but their achievements in their lifetime have only stopped in the field of pure numbers.

Although this is nothing, after all, there are specializations in the art industry, and not everyone is an applied talent.

But at this juncture, he didn't want to see Lu Zhou suddenly lose the chain.

The corner of Lu Zhou's mouth twitched: "Hehe, you will know if I can do it in two days."

"..."

This sound is very spiritual.

Although he was suspicious, Senior Brother Qian didn't say anything.

I've waited for three days, is there still two days left?

The only thing that makes him and Professor Li Rongen feel uneasy is that Zheda has been silent lately, something is wrong, as if holding back a big move. The two parties have a lot of overlap in the research project of "carbon nanotube modified cement-based composite materials", and even the base material in the project is Portland cement.

This makes people panic.

Especially when their project hit a bottleneck...

After hanging up the phone, Lu Zhou, who had already walked into the cafeteria, just put his phone back into his pocket, when another call came suddenly.

He took out his mobile phone and saw that it was Fatty Wu calling.

After pressing the connect button, Lu Zhou took out his rice card and swiped it on the card reader in the window of barbecue bibimbap, while yawning and saying.

"Hey?"

Fatty Wu: "What have you been up to recently? I haven't seen you in the past few days."

Lu Zhou thought for a while and said, "The scientific research project of the academy is related to carbon nanotube materials."

Fatty Wu: "666, Carbon Nanotube Materials Research Institute? That's amazing!"

Lu Zhou was surprised and asked: "You know?"

Fatty Wu chuckled: "Didn't we relocate the laboratory last year? I took someone to install their broadband and routers there."

Lu Zhou: "..."

Fatty Wu coughed lightly, and continued, "Tomorrow afternoon, I plan to call people together for a meeting to discuss the promotion plan after the new version is launched. Do you have time to come over?"

"No time, I'm too busy these days," Lu Zhou put the meal card back into his pocket with the phone under his arm, took the plate from the aunt in the cafeteria, and said, "Why don't you... have a look Can you organize the meeting yourself?"

Fatty Wu didn't know whether to laugh or cry and said, "Boss, you wouldn't be the shopkeeper from the very beginning, would you?"

Lu Zhou also felt that this was not very good, but he really didn't have time, so he coughed dryly and said, "Isn't this a stage for you, not to mention that I probably couldn't come up with any good opinions when I went there. Come on! I Look forward to you, the future general manager!"

Fatty Wu: "...?"

There is nothing wrong with it, and he also thinks that he is the material to be the general manager.

However, Lu Zhou's last few words.

Why does he feel that there is something familiar?

...

time flies.

Another two days passed in a blink of an eye.

Looking at the stack of draft paper piled up at the corner of the table, Lu Zhou, who was sitting in the empty classroom, was filled with emotion.

It is already one o'clock in the morning.

After the library closed, he found an empty classroom with his computer bag on his back and worked hard for several hours, finally completing the final steps.

How much he has paid for this project, I am afraid that only he knows in his heart.

Lu Zhou sighed in his heart, entered several sets of data into the computer, and with the help of the computer's powerful computing power, he completed the final blow to the enemy's spring.

Then, import the resulting sets of data into the formula...

Suddenly, Lu Zhou was stunned staring at the draft paper, and unconsciously stopped the pen in his hand.

Looking at the numbers on the draft paper and then at the numbers on the computer screen, a strange expression appeared on his face.

α=0?

This is impossible!

no, wait...

Think from another angle.

If his calculations are correct, the final alpha parameter is indeed equal to zero.

This also means...

When CNTs material is incorporated into Portland cement, it does not have any impact on the early-age hydration reaction at all!

hell...

-

(PS: The source of conclusions and proof ideas is Issue 03, Journal of Composite Materials, 2017 edition. The time point of the novel is only in 2014. Compared with this time point, it should be regarded as "black technology". In addition, a digression, after all, science fiction, for The rhythm of the plot, some places will definitely be artistically processed. I can only make it close to reasonable in the field I know. In the future, as the plot progresses, more and more black technologies will definitely appear. I hope the big guys will pat it Well, let’s talk about the digression this time, and save more words for the testimonials on May 1st. The important thing is to ask for a recommendation ticket~~~~)