I Have a Research Support System

At 6:00 p.m., the freshmen of the Department of Materials Science and Engineering were organized to participate in the course Safety and Management of Materials Engineering Laboratory.

The teacher is an old professor in the department, Wang Shaoxian, his hair is already gray, and his age seems to be 60+.

Wang Shaoxian and Xu Qiu have heard about him. He is a veteran who came in when the Department of Materials was first established. His qualifications are very old, but he does not have a strong sense of presence in the eyes of the students, because the course he teaches is a relatively obscure professional elective course X-Ray. Diffraction, not many people study it.

Not long ago, there was an announcement in the Department of Materials that Professor Wang Shaoxian was appointed as the Safety Director of the Department of Materials.

This safety director position did not exist before, and it is a newly established position in response to the call of the country.

To put it simply, it is responsible for the safety issues of the laboratories in the Department of Materials, that is, it is a bad face.

Therefore, certain qualifications are needed to be able to stand in the field. If you choose a green pepper scholar in his 30s, it will definitely be difficult to convince the public.

On the other hand, doing this job can also offend people.

For example, in such a situation, a Yangtze River or Jieqing laboratory needs to be shut down and rectified due to safety problems.

If a Qingjiao scholar without a hat is in charge of this matter, in order to prevent being settled by Qiuhou, he will most likely not have the courage to fire at Yangtze River and Jieqing, but will choose to turn a blind eye.

Of course, if this kind of thing is exposed on the Internet, this green pepper will definitely be attacked by keyboard warriors from all walks of life.

But what is said is easier said than done. Most people can give advice on various social events on the Internet. When they are in a conflicted situation, most of them will make the same choice as the parties concerned, seeking compromise.

Looking back to the classroom, all the more than 60 freshmen in the Materials Department were on the spot.

The reason is also very simple. This class requires roll call, and the instructor Bao Wei and several deputy deans of the material department are present to observe. Who would dare not come.

So, sixty or seventy people sat together and watched the PPT, which showed some videos, pictures, and texts of laboratory safety accidents.

Wang Shaoxian draws a long tone: Today...we mainly...talk about...recently...accidents that happened in domestic laboratories....

This is a case that was just reported not long ago. An explosion occurred in a laboratory of the School of Chemistry, Chemical Engineering and Biological Engineering of Dongfa University located in the Songjiang University Park. Two students were seriously injured and one student was slightly scratched.

Xu Qiu had also heard about this accident, but the popularity of this incident did not last long. The relevant reports were forwarded in various group chats for about six or seven days, and then disappeared. He vaguely remembered that the final investigation result was It is caused by the student's operation error.

The memory of the Internet is limited. As long as it is not an event of the level of 911, most of the other things that seemed to be big at the time, as long as they do not continue to report, how many people can remember it after three years.

Wang Shaoxian's hypnotic voice continued to sound: Looking back, at around 10:10 am on December 18, 2015, an explosion and fire accident occurred in a laboratory on the second floor of Hetian Building, Department of Chemistry, Qingbei University. The postdoctorate of the experiment died on the spot. The cause of the accident was that he did not realize that there was a hydrogen leak, and the high temperature experiment caused a hydrogen explosion.

If someone is dead, then this matter is still quite serious.

However, Xu Qiu hadn't heard or seen any reports before, so Qingbei University's public relations might be better.

In general, laboratory accidents in colleges and universities, minor injuries and serious injuries are more common, and the cases of direct casualties are relatively rare, because usually when doing laboratories, the dosage of dangerous reagents is relatively small, which may have chronic toxicity, but Generally, it will not cause too much direct harm.

That is to say, hydrogen is special because hydrogen is gaseous. Once it explodes, the flame will spread to the entire space instantly, causing a large area of ​​high temperature and shock waves. People are directly bombarded to death by the map gun before they can escape.

At about 16:30 on June 17, 2015, an explosion occurred in the laboratory on the second floor of the physics building of Sioux City University when processing lithium blocks. Sioux City Fire Department mobilized 7 fire engines to participate in the rescue, and no one was injured.

At about 6 pm on March 6, 2012, a fire broke out in the laboratory building of the Peking University Medical Center located in the southeast of the Xueyuan Bridge on the North Fourth Ring Road. Fortunately, there were no casualties, but the smoke filled the entire building. The windows on the first floor and the platform on the second floor were evacuated to the outside of the building.

At about two o'clock in the afternoon on February 15, 2012, a formaldehyde leak occurred on the 6th floor of the chemistry building on the Drum Tower Campus of Jinling University, and about 200 teachers and students were evacuated. Three police cars and four fire engines rushed to the scene. Many students in the accident had throat Pain, tears, feeling unwell.

...

On August 8, 2005, a laboratory of the Department of Chemistry of Capital Normal University caught fire on the second floor of the laboratory building. No casualties were reported.

Although the effect of the old professor's lectures is so-so, the freshmen still have a certain understanding of the importance of laboratory safety after watching the PPT.

After all, no one wants to be used as an example in the safety education PPT in the future.

After Wang Shaoxian finished the PPT, the counselor Bao Wei took his place, coughed lightly and said: Let me introduce the way of laboratory safety assessment, which is conducted in the form of electronic test papers, including true and false questions, multiple choice questions and indefinite items. There are 50, 30 and 20 multiple-choice questions, 1 point for each question, 1 point for a correct answer, and two cases for wrong answers, one is zero points, and the other is deducted 100 points.

When I heard that 100 points would be deducted for wrong answers to some questions, the audience was in an uproar.

Bao Wei explained: There are not many questions that deduct 100 points. There are 10 questions in total. They are all of the type that can never be answered wrongly, so don't worry. The full score of the assessment is 100 points, and 90 points pass. If you pass the test, you will not be allowed to do experiments in the research group until you pass the make-up exam.

Xu Qiu nodded slightly. The department had made a compromise. It did not force the students to take the exam before starting the experiment. Instead, it assumed that you passed the exam.

In this case, the difficulty of policy implementation will be much smaller.

The assessment time is set after the National Day holiday. The questions are randomly selected from the question bank. After the course is over, I will send the question bank to everyone. Our freshman class is the first batch to participate in the assessment. After that, we will arrange the second and third studies. The old students will be assessed. After a pause, Bao Wei continued:

In addition, before the National Day, there will be a course on the theme of 'Academic Standard Education', and the teacher is also Professor Wang Shaoxian.

After listening to the lesson, Xu Qiu and the three returned to Caiyi 216 together.

Seeing Duan Yun and Chen Wanqing at the desk, Xu Qiu suddenly had an idea: I have good news for you.

Duan Yun turned his head: What good news?

Xu Qiu said mysteriously, Mo Wenlin, tell me.

Mo Wenlin paused, and asked tentatively, You mean what we just heard...

Xu Qiu nodded, and gave him a look of children can be taught.

The senior couldn't help asking, What's the matter?

Mo Wenlin complained about Xu Qiu's bad taste in her heart, and then explained in detail with a smile on her face: It's the safety assessment, specifically...

Chen Wan gave Xu Qiu an innocent look: Is this the good news you said?

Han Jiaying cheerfully interjected: So, I'm the only one in the group who doesn't have to take the exam. I'm still an undergraduate student. That's great.

There is also Wu Shengnan, she is a post-doctoral fellow and doesn't need to be assessed, Duan Yun sighed softly, Hey, I thought we graduates didn't need to be tested. By the way, have you checked the question bank? Are there many questions?

I have already received the question bank from the counselor, Sun Wo said, Three PDF files contain a total of 1700+ questions.

1700, so much? Xu Qiu opened the mailbox, downloaded the file, and browsed roughly.

Most of the questions are quite satisfactory, and test some common sense.

For example, which of the following substances is liable to explode when mixed with ethanol? ()

A. Hydrochloric acid B. Diethyl ether C. Perchloric acid D. Acetone

Xu Qiushou chose C, because perchloric acid is a strong acid with higher acidity than sulfuric acid, and it is a strong oxidizing agent. If the concentration is relatively high, when it encounters reducing ethanol, a violent redox reaction will occur, showing Come out and it's a blast.

Some topics are slightly flawed.

For example, when taking reagents, what is the wrong statement? ()

A. Do not touch the reagent with your hands, so as not to endanger health and contaminate the reagent

B. The bottle stopper should be turned upside down on the table to avoid contamination. After taking the reagent, immediately cover it tightly and put the reagent bottle back to its original place with the label facing outward.

C. Use a clean medicine spoon to take the solid reagent, and the used medicine spoon must be washed and dried before reuse

D. The excess reagent can be returned to the original bottle to avoid waste

Xu Qiu knew that the answer to this question must be D, but in fact, during the actual experimental operation, sometimes the excess reagents can be poured back into the original bottle.

Just like polymer materials such as 1W per gram of PCE10, as long as the bottle used for weighing is clean when preparing the solution, if you weigh too much, you can pour the material back and weigh it again, otherwise you only need to waste 10 mg Just a waste of 100 bucks.

In addition, when evaporating gold, if two gold targets are planned to be placed, and one more gold target is poured out, then the extra target cannot be discarded directly, and it must be put back into the reagent bottle.

In other words, for low-value reagents, it is definitely problematic to return to the original bottle; but for high-value reagents, it is still necessary to analyze the specific situation.

In addition, Xu Qiu also discovered some very strange topics.

For example, when you enter the laboratory and find garbage on the ground, what should you do? ()

A. Pretend not to see B. Pick it up and throw it into the trash can C. Kick it to the shadow under the table D. Give it to the teacher

Xu Qiu was immediately stunned. The two options A and C are fine, after all, they conform to the thinking of normal people.

What kind of brain hole is this for the person who made the question, to be able to design option D.