Chapter 95 Part-time Senior Sister
From noon to evening, from sunset to bright lights, Xu Chuan stretched out in the dormitory.
After eight or nine hours of busy work, he finally finished sorting out the experimental data in his hands.
Glancing at the programming modeling software such as MATLAB, Lingo, Cplex, python, etc. that were being downloaded on the computer, Xu Chuan saw the jumping traffic of 68.3Kb/s, 72.1Kb/s and less than one-tenth of the progress. I just feel my balls hurt.
Can this campus network be even more broken?
It's been almost ten hours, and the progress has only come so far.
Looking at the time in the lower right corner, it was around nine o'clock in the evening. He touched his stomach and got up to eat.
It was another day with an irregular schedule. If this continued, sooner or later he would get a stomach bug and end up eating soft food.
Shaking his head, Xu Chuan went straight to the Second Canteen of Nan University. At this time, the only second canteen was still open.
After ordering two dishes at random, Xu Chuan sat in the corner and started eating. Suddenly, a figure came into his eyes.
The part-time girl I met at dinner last time actually came out of the back door of the cafeteria, holding a rag and a bucket of water
Xu Chuan didn't pay attention at first. After taking two bites of food, he felt something was wrong.
He raised his head suddenly and glanced at the girl who was wiping the dining table, feeling a sense of familiarity welling up in his heart.
"Isn't this Professor Zhou Hai's student, the senior sister who gave him medicine?"
Xu Chuan was stunned for a moment to reflect. No wonder the senior sister always felt familiar when she delivered medicine to him. It turned out that she was working part-time here.
"Hi, senior."
Xu Chuan said hello.
Across the way, Liu Jiaxin, who was wiping the table, heard the sound and couldn't help but tremble. She has been working part-time here for a year, and this is the second time someone has greeted her.
The first time was her teacher Professor Zhou Hai.
Carefully raising her head, she looked for the source of the sound, and a face with a bright smile came into her eyes.
Seeing that it was a familiar person, Liu Jiaxin felt slightly relieved.
"Yes, it's you."
After saying hello in a low voice, her face turned a little red. She was a little embarrassed when a familiar person bumped into her and she was working part-time here.
"Do you have to work part-time here every night? Senior sister." Xu Chuan asked casually after taking a bite of the food.
He didn't think too much about it, it was just a part-time job, and it wasn't like he had never done it before.
In his previous life, his family was far less wealthy than in this life. Both his parents were farmers, and they had to provide for a son and a daughter to go to school. Moreover, they both went to prestigious schools in the provincial capital. His family was not well-off until he entered graduate school and made his own achievements. Things only got better after a big bonus.
In order to supplement his living expenses, he also worked part-time jobs when he was in college, including distributing flyers and tutoring.
Liu Jiaxin nodded and continued to wipe the dining table and arrange the tables and chairs.
Xu Chuan didn't care. After he finished eating, the second cafeteria was almost closed. The next day, Xu Chuan found his mentor Chen Zhengping in the materials research and development building with the data calculated yesterday afternoon.
"Are you saying that the concentration of the hydrogen reducing agent has no effect on the synthesis and collapse curling of tungsten diselenide nanosheets?"
Chen Zhengping asked again in surprise, took the manuscript paper hesitantly, and started to read it.
Xu Chuan nodded and said: "From the data calculation point of view, it does not have much impact. I calculated three sample data yesterday. The synthesis and collapse curling deviation of tungsten diselenide nanosheets was 0.03%. To about 0.05%, this deviation can be said to be very small.”
On the other side, Fan Pengyue from Master Xiong who came over to listen quickly retorted: "How is this possible? The concentration of the reducing agent cannot have no effect on the synthesis and collapse curling of tungsten diselenide nanosheets."
"After dissolving sodium borohydride in an organic solvent, selenium powder and sodium tungstate are added successively to prepare a mixed solution, and then a hydrogen reducing agent can effectively increase the generation rate of tungsten diselenide."
"If there is no effect or even a very small effect, what else is it called a reducing agent? There is no need for us to add a hydrogen reducing agent."
Xu Chuan shrugged and didn't mind Fan Pengyue's rebuttal. He knew that Master Xiong had always had this straightforward character.
"But the result I calculated is like this. Maybe it goes against common sense, but mathematics will not lie."
"That may be a problem with your calculations"
"No, there is no problem with Xu Chuan's calculation data. The problem may really occur in the hydrogen reducing agent."
On the side, Chen Zhengping suddenly interrupted Fan Pengyue and continued: "Maybe the concentration of the hydrogen reducing agent is too high? And it is saturated in the hot solvent. This will also cause it to be ineffective no matter how we change the concentration of the hydrogen reducing agent. Increase the production rate of tungsten diselenide”
Fan Pengyue frowned and said: "But the concentration of the hydrogen reducing agent was obtained through our previous experiments. There cannot be a problem. If there is a problem, we should have discovered it in the previous experiments."
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"Furthermore, judging from the hydrogen reduction papers and experimental data of tungsten diselenide in other laboratories, including the United States, Germany and other countries, the hydrogen reducing agent is the most suitable for the generation of tungsten diselenide."
Hearing this, Chen Zhengping smiled and said: "Perhaps it is these things and our experience that have harmed us. We have only experimentally confirmed the effect of hydrogen reducing agent on selenium powder and sodium tungstate before, and have not completely examined the entire Experimental process for new testing ”
"And this time we used brand-new means and methods to synthesize tungsten diselenide nanosheets through the hot solvent method. Previous experience and data may not be applicable, so problems are possible."
"Xuchuan, what do you think?"
When the conversation changed, Chen Zhengping suddenly asked Xu Chuan.
Caught off guard, Xu Chuan almost revealed his previous experimental theory, but luckily he held it back midway.
After calming down his thoughts, he said: "I don't know about this, after all, I am not familiar with the material."
"But I think it might be possible to establish a mathematical model to simulate the effects of temperature, pressure, reducing agent concentration, time and other parameters on the collapse and curling of tungsten diselenide nanosheets?"
"Do you know how to model? Have you learned it?"
Hearing this, Chen Zhengping looked at Xu Chuan in surprise.
Xu Chuan was about to nod, but then he thought of something, shook his head and said, "I'm not very familiar with this area, but I can recommend someone."
"Who?" Chen Zhengping asked.
(End of chapter)