I am a super cop

Chapter 819 Looking for the Dragon Ruler [Seeking Monthly Pass]

2:20pm.

The lecture hall of the Yangcheng Criminal Division was already overcrowded.

Forensic students from all over the country sat in the corners of the lecture theater.

Everyone has a relaxed face, exchanging anecdotes that they like to hear and see in their work with each other, and some people laugh out loud from time to time.

At first, Gu Chen planned to sit in the middle seat, but when he accompanied Lu Weiwei to the toilet and came back, it seemed that someone was already sitting in his seat.

Lu Weiwei stepped forward and knocked on the table: "This classmate, is this seat ours?"

"Your ones?" A middle-aged female student glanced at Lu Weiwei, then at Gu Chen behind Lu Weiwei, and said displeasedly, "But I didn't see anything on the table."

Lu Weiwei didn't speak, but looked around, and then found the notebooks of herself and Gu Chen in the drawer under the table.

"Hey! Things are always here." Lu Weiwei said.

The middle-aged female forensic doctor suddenly looked embarrassed, but smiled politely: "I'm sorry, when we were sitting here before, we really didn't see what was on the table."

"And your eldest sister's eyes are very bad, and myopia is also very serious. You see, the front row is full of people, sit in the back row, I can't see the projection and whiteboard clearly, how about you look..."

The middle-aged female forensic doctor glanced at the last row of the lecture theater, folded her palms together, and said embarrassedly: "How about you see if you can sit in the back? I'm really embarrassed."

"But we can't see clearly when we sit in the back row." Lu Weiwei glanced at the back row seats, only to find that there were only a few vacant seats in the corner of the back row, and she was a little unhappy.

This is obviously a special seat for scumbags, but everyone who came to the Yangcheng Criminal Bureau came to learn knowledge. Sitting there, Lu Weiwei was afraid that she might fall asleep while listening to the class.

It will be embarrassing if you fail the exam.

"Please." The middle-aged female forensic doctor narrowed her eyes and put her hands together to express her apology.

"How about... let's sit in the back." Gu Chen said indifferently.

When Lu Weiwei heard the words, although there were 1 dissatisfaction in her heart, she could only agree: "That's fine, I'll listen to you."

Taking out two notebooks from the drawer, Lu Weiwei reluctantly followed Gu Chen and sat in the far corner of the auditorium.

From this perspective, it is indeed possible to overlook the entire lecture hall, but it is too far away from the podium.

The two threw the notebook on the table and sat down quietly.

Lu Weiwei suddenly felt that if this seat was placed in the student days, it would definitely be the best seat for couples.

But the situation is different now. Everyone has to learn the real skills, take what they have learned back home, and undertake the task of training.

Therefore, Lu Weiwei did not dare to slack off...

Police officer Wang searched for the two of them for a long time, and finally found Gu Chen and Lu Weiwei in the back row, so he also hugged the notebook and approached them.

"Why did you come here?" Officer Wang asked.

Lu Weiwei was quite disappointed and said, "It's just... quite suddenly, when I went to the toilet, my seat was taken away."

"You guys are real." Officer Wang seemed to realize that his voice was a little too loud, so he quickly lowered his tone: "Next time, remember to ask Gao Chuanfeng to help you watch your seat."

"Yes." Lu Weiwei nodded and said yes.

But looking back, I suddenly felt something was wrong.

"Eh? Then what are you old Wang doing here? Your seat was also taken by someone?"

"No." Police officer Wang waved his hand and turned his chin to the seat just now: "The people sitting next to me are all professional forensic doctors. I don’t understand, I don’t even know some simple things.”

"So... you chose to sit with the scumbag?" Lu Weiwei asked.

Police officer Wang smiled: "At least the instructor will ask questions later, and we won't be called. It's safer to sit here."

"Hehe." Lu Weiwei laughed dryly, and said in a bad mood: "I said, Lao Wang, you really think too highly of yourself. When the instructor asks a question, will you choose a half-baked student like you? Are you thinking too much? Talk to Gao Chuan Wouldn't it be nice for Feng and Liu forensic doctor to sit together?"

"Hey, one thing is one thing. After all, the three of us are together and cannot be separated."

Police officer Wang also has his own set of fallacies, mainly because he is sitting in the pile of forensic doctors and has no sense of security.

If someone asked me some small questions, it would be a trivial matter not to be able to answer them, but it would be a major matter to embarrass the Furong branch.

Police officer Wang will not understand this truth.

……

……

2 points.

Zhang Hui, the bald instructor, with a thick stack of materials in his hands, came to the podium of the auditorium accompanied by two other first-level police inspectors.

As before, everyone sat at the long table on the podium, facing everyone.

Yang Ting, on the other hand, came to the multimedia operation platform and was responsible for broadcasting the projection copy and writing on the whiteboard.

Obviously, Yang Ting is Zhang Hui's assistant.

"Hey, hello, hello." The bald instructor Zhang Hui patted the microphone, and after confirming that the equipment was normal, he said:

"Okay, are everyone here?"

"Everything is here," said assistant teacher Yang Ting.

"Okay, let's start now." Zhang Hui raised his voice, picked up the thermos cup on the table, took a sip of wolfberry tea, and then said to everyone:
"There are many excellent forensic doctors here from all over the country, some are old forensic doctors, some are young forensic doctors, and some are even non-specialized in forensic medicine."

Having said this, everyone at the scene involuntarily looked in Gu Chen's direction.

Zhang Hui didn't care about these details, and said directly: "So, here, I must take care of all the students, and try to use easy-to-understand language to teach, so that everyone can understand, learn, take away, and help everyone Successfully completed this term of study."

"Crack, clap, clap."

I don't know who took the lead in applauding, but soon, the applause was enthusiastic.

Zhang Hui squeezed his hands, and seeing the applause dissipated, he said: "Old rules, first ask a simple question."

"If...you find a corpse in the water, how can we, as forensic doctors, determine the cause of death?"

"Drowning should have some characteristic manifestations, and we can judge based on these manifestations." Zhang Wenbo, a forensic doctor with a big face sitting in the front row, replied eagerly.

"That's right, then... what if it's a highly corrupted corpse? The corpse is beyond recognition, is there anything our forensic doctor can do?" Zhang Hui asked again.

"Diatom detection." In the crowd, I don't know who shouted.

Zhang Hui nodded in satisfaction: "Yes, the answer is yes, then this method is the diatom test."

Glancing in Yang Ting's direction, Yang Ting immediately turned off the lights in the front row and released the slideshow pictures.

At this moment, the blue background copywriting is ready to come out.

Zhang Hui said in a loud voice: "As a single-celled plankton, diatoms probably never dreamed that their inadvertent positional movement can provide assistance to our forensic work."

"However, I am honored to tell you that our team of researchers from the Yangcheng Institute of Criminal Science and Technology in Guangdong Province has conducted long-term research on the issue of diatom detection in forensic medicine and achieved fruitful results."

"We have established a forensic diatom detection system based on membrane enrichment, which has the characteristics of high efficiency, accuracy, pollution prevention, and high sensitivity."

"It solves the major problem of traditional forensic diatom detection, greatly improves the application value of diatom detection in drowning diagnosis, and polishes the 'golden brand' for forensic diatom detection."

"Clap clap clap."

Facing Zhang Hui's confident introduction, the students in the audience also applauded cooperatively.

Zhang Hui squeezed his hands, looked back at the PPT picture, and then said with a smile: "The picture you are seeing now is the picture of our team accepting the award at the annual National Science and Technology Award Conference held in Beijing two years ago. "

"Our Yangcheng Institute of Criminal Science and Technology presided over the completion of the 'Forensic Diatom Inspection Key Technology and Equipment' project, which won the second prize of the National Science and Technology Progress Award."

"And this is the second honor the project won after winning the first prize of the Ministry of Public Security's Science and Technology Award five years ago."

"So, this is enough to see that we have conducted in-depth exploration of the project's key technologies such as diatom digestion and extraction, enrichment extraction, observation and analysis, as well as technological innovation and application in equipment research and development."

"And diatoms are the 'dragon-finding ruler' of our forensic medicine."

"Looking for the Dragon Ruler?" Gu Chen's eyes lit up when he heard the instructor Zhang Hui say this term, and he quickly wrote these three words on the blank notebook.

But Zhang Hui continued to smile at everyone and said: "As a single-celled plankton, this diatom probably never imagined that its inadvertent positional movement can provide help for forensic work."

"This small diatom can play a huge role in judging the cause of death of corpses in the water."

Speaking of this, Zhang Hui suddenly stopped speaking, and suddenly asked: "Then the question is, when the drowning person drowned, these diatoms were inhaled due to choking water, and then by what function, they were brought to the drowning person's lungs. , liver, kidney and bone marrow and other organ tissues?"

"blood circulation."

As soon as Zhang Hui finished speaking, Gu Chen connected seamlessly.

It's just that Gu Chen sat in the back row, and his voice was relatively low, so Zhang Hui didn't hear clearly.

On the contrary, Zhang Wenbo, the forensic doctor with a big face sitting in the front row, heard it, so he repeated loudly: "It is through blood circulation."

"Very correct." Zhang Hui nodded slightly, and also waved his right index finger and said involuntarily: "It is through our blood circulation that it is brought to the lungs, liver, kidneys, bone marrow and other organs and tissues of the drowning person."

"However, diatoms can be observed by a microscope." Zhang Hui said here, his tone suddenly became gentle again, and his eyes scanned the audience.

At this moment, all the students were taking notes with their heads down, looking very serious.

But in the corner of the last row of the lecture theater, Zhang Hui found Gu Chen, who was holding his chin, as if listening to a book.

Gu Chen rested his chin with one hand, as if he had no intention of writing, but simply looked at himself.

Zhang Hui frowned immediately, and could only continue: "Generally speaking, if diatoms are found in the tissues and organs of the corpse in the water, it means that the victim died by drowning."

"On the contrary, it means that the victim was not drowned, but was killed by other means and then thrown into the water."

"So taking it a step further, if the diatoms found in the organs are significantly different from the diatoms found in the water sample where the body was found, that means the victim drowned somewhere else, so diatoms can also play a role in inferring the place of drowning." .”

Seeing that everyone was taking notes quickly, but Gu Chen remained motionless, Zhang Hui, the bald instructor, was immediately displeased.

I wondered why this student didn't even take notes?

If you don’t take notes, how can you review when you go back?

However, due to the large number of students in the audience, Zhang Hui couldn't point it out in person. He just suppressed his anger and continued to ask the assistant teacher Yang Ting to play the slides.

"Okay, what you are seeing now are a few sample pictures. I hope you will record what I just said."

"Therefore, how to detect diatoms from corpses in water, especially from systemic organs, has always been the focus of forensic scientists, and it is also a recognized problem in forensics all over the world."

Looking at everyone, Zhang Hui said again: "Why are diatoms so popular?"

When Gu Chen began to rest his chin with one hand to hold his chin with both hands, Zhang Hui couldn't bear it anymore.

But he didn't name Gu Chen directly, but called Police Officer Wang next to Gu Chen and said, "The student sitting in the last row who is taking notes, tell me, what is diatom?"

After the voice fell, everyone in the audience turned their heads to take a look.

Officer Wang's expression froze suddenly, and he quickly looked around, thinking that it wouldn't be so unlucky, right?Sitting in the last row can't escape the roll call?
But for a while, I couldn't say it, so I quickly pretended not to know, and continued to take notes.

"It's you, you don't need to look at anyone else, it's the male student sitting in the back row, in the corner." Zhang Hui took a sip of wolfberry tea and reminded him intentionally or unintentionally.

Lu Weiwei quickly lowered her head, kicked Police Officer Wang, and then reminded in a low voice, "Old Wang, I'm talking about you."

"I know." Officer Wang frowned and responded to Lu Weiwei in a low voice, then bowed his back and stood up reluctantly.

When everyone saw that it was Police Officer Wang from the Criminal Investigation Team of Furong Sub-bureau in Jiangnan City, they suddenly felt secretly happy.

I thought that instructor Zhang Hui really knows how to pick people.

It's not good to pick anyone, but they even picked a police officer Wang who is not a medical professional. Now it's a good show.

Everyone waited for Comrade Wang to make an embarrassment on the spot.

Seeing that Police Officer Wang did not respond for a long time, Zhang Hui, who put down the thermos, asked disdainfully, "What? I don't know?"

"Uh, diatoms are just...just..."

Seeing that he was about to be embarrassing, but at this moment, Police Officer Wang suddenly realized that a notebook was pushed from Gu Chen.

The blank notebook is filled with several rows of neat words.

Officer Wang's eyes lit up immediately, and he raised his head and straightened his chest and said, "Diatom is a kind of aquatic single-celled plant, which is widely distributed in natural water bodies such as oceans, lakes, rivers, reservoirs, ponds, ditches, and puddles, and some of them also grow on wet soil, and other surfaces."

When the voice fell, everyone at the scene was suddenly shocked.

Officer Wang, who was still slurring just now, suddenly seemed to be a different person, which caught everyone by surprise.

Instructor Zhang Hui was also taken aback. After looking around at the colleagues around him, he raised his head and asked, "Is there anything else? Do you have anything to add?"

"Supplement... Supplement?" Officer Wang was stunned, and quickly scratched the back of his head.

But at this moment, Gu Chen's transcript was pushed in front of him again calmly.

The corner of Police Officer Wang's mouth raised, and he said loudly: "Diatoms vary in size, from a few microns to several millimeters, and have different shapes."

"Diatoms, on the other hand, have a shell of silica and pectin, the cell wall."

"The shell surface has a specific symmetrical pattern and fine microstructure, resulting in a very large number of diatom species with morphological differences."

After police officer Wang's voice fell, he also took a deep breath.

This stunned everyone present.

A non-medical professional police officer can describe diatoms in such detail.

This level of fragrant breath, let alone an ordinary forensic doctor, is a professional old forensic doctor. When saying this information, he has to carefully consider the professional terminology.

But Police Officer Wang blurted out, and he was absolutely right.

Now it was Zhang Hui's turn to be dumbfounded.

Originally, he wanted to use the colleagues around Gu Chen to beat Gu Chen who had deserted, but he didn't expect that the person sitting next to Gu Chen was actually a bully?
Zhang Hui was a little embarrassed, but still refused to give up.

He first pressed his hand to let Officer Wang sit down first, and then asked: "Then does anyone know what are the characteristics of the shape and structure of the diatom cell wall?"

All the students at the scene quickly bowed their heads and remained silent.

Xin said that at the very beginning of this, the instructor Zhang Hui had questions one after another. Everyone was not familiar with diatom detection, so they came here to participate in the training.

But Zhang Hui is fine, one question after another, how do you answer it?What if the answer is wrong?
Personal embarrassment is small, but embarrassing the unit is big.

Zhang Hui didn't seem to have any intention of asking other people, so he pointed directly at Lu Weiwei who was beside Gu Chen and said, "Then... that female student should answer the question, yes, the one sitting next to the male student who answered the question just now Female student, it's you."

Lu Weiwei was also named inexplicably, thinking that this is a misfortune, and Lao Wang's answering the question actually got herself involved?
Lu Weiwei also stood up awkwardly, lowered her head, and scratched the back of her head.

But at this time, Gu Chen's transcript was pushed in front of Lu Weiwei again.

Lu Weiwei chuckled, glanced around for a few seconds, and then said loudly to the podium: "The morphological structure of the diatom cell wall...has the characteristics of specificity, stability, and diversity. This is an important basis for the identification of diatom species."

"You know that too?"

After Lu Weiwei finished speaking, instructor Zhang Hui was stunned again.

Xin said that beside the student who deserted, there was not one Xueba sitting next to him, but two?

Thinking of this, Zhang Hui also had a headache, but before Zhang Hui spoke.

Lu Weiwei, who had already finished answering the question, added loudly:
"Also, in addition to morphological characteristics, diatoms also have many other important characteristics, including huge biomass, sensitivity to changes in living environment, and indication of paleoenvironment."

"These characteristics make diatoms widely used in red tide detection, aquaculture, water quality monitoring, resource investigation, paleoenvironmental analysis, oil exploration, forensic identification and other fields."

Zhang Hui:? ? ?
Why don't you play your cards out of routine?

……

　Some easter egg chapters seem to have a two-day review period, so it will be delayed, please know
　　
　
(End of this chapter)