civil forensic

Chapter 274 Lion Head
Jiang Yuan currently masters LV3 forensic anthropology and LV3 forensic clinical science.

Compared with forensic doctors of the same level, his ability has a little advantage, that is, his knowledge system is extremely complete.

It's something in the category of forensic anthropology LV3, he just knows it.It is knowledge within the LV3 category of forensic clinical science, and he does not fall behind at all.

This is actually very buggy.

That is to say, if a set of test papers is based on the LV3 level of forensic anthropology, Jiang Yuan can basically answer 100 points.

But the reality is that most people, even expert forensic doctors, are actually a bit biased.

For example, Shannan Province’s own TOP2 forensic doctor Zhang Fengtian, his forensic anthropology may also be at the level of LV3, but if he is asked to take the LV2 paper, he will definitely get a full score. If he takes the LV3 paper, he may score 80 points, or It looks like 90 points.

There are always some special details, relatively unpopular, or unpopular knowledge, which he has never studied or researched carefully.

This is actually not affected in daily work.

There is never just one way to go about a criminal case.In many cases, in the eyes of some people, there is only one clue or none, but in the eyes of others, there may be multiple clues.

Just like ordinary criminal police, when they arrive at the crime scene, they just look for DNA, fingerprints, surveillance, mobile phones, and witnesses if they can't. Blood itself is rare in this era.

But for Jiang Yuan, these are all targets within his range, and he can make a breakthrough if he chooses a weak link.

It is equivalent to saying that the criminal suspect needs to pay attention to all these links and reach a considerable degree of concealment before he can escape punishment.

The same is true for Zhang Fengtian, the TOP2 forensic doctor in Shannan Province.He has many technical means, but it does not mean that he needs to master all the relevant knowledge—especially the niche knowledge that has not yet had a clear conclusion, such as the shrinkage rate of bone burning. Wait, in a few days, I can't figure it out.

As for which shrinkage rate is more suitable in the end, there is still only a rough idea, and no accurate conclusion can be drawn.

That is to say, even if Zhang Fengtian started to make up for his lack of knowledge based on the shrinkage rate of bone burning, he would have to delay for several days, and secondly, the conclusion he drew was still probabilistic, which meant that there was still the possibility of making mistakes.

Similar to Jiang Yuan, in this case, Yu Wenshu had to be the final person in charge.

Even so, he could only give the victim's possible age, gender and height in the end...

As a long-established forensic doctor, Zhang Fengtian probably didn't want to take this path.

Jiang Yuan didn't care.

He is a little famous now, but he has no idol baggage, nor should he.

Sitting in the corner of the conference room, Jiang Yuan first measured each bone fragment with a ruler.

The shrinkage rate is hovering around one or two percentage points. It would be too bad if there was a mistake with the previously measured data.

Jiang Yuan measured it several times by himself, recorded it, and then analyzed the degree of carbonization or porcelainization of each bone fragment.

Carbonization is 800 degrees, and porcelain is 1000 degrees, but these two values ​​are beyond the level of existing literature, and are also beyond the level of ordinary civilian furnaces.

Jiang Yuan sketched on the straight surface for a moment, and estimated a value of 17% for the porcelain bone fragment.

Then, estimate a value of 15% for the carbonized bone slices.

In this way, data such as the length and width of the fresh bone slice can be obtained by reverse calculation.

Then apply the regression equation to get the height of the deceased.

As for gender, it depends on several characteristic points.

To sum up, in the middle of this series of calculations, there must be three valuations. If it is a little bit skewed, the final result may be quite different.

Jiang Yuan understood Zhang Fengtian's conservatism more and more, but if he was afraid of making mistakes in a case, he couldn't do it.

Those who do criminal cases spend most of their time on trial and error, just like those who watch surveillance or check fingerprints, they find mistakes and dead ends again and again, so they withdraw and choose other more difficult roads to go on.

The same goes for forensic anthropology.

If you make a mistake, start over.

Even so, Jiang Yuan did it meticulously to reduce errors as much as possible.

……

Everyone else in the meeting room can see Jiang Yuan's work status.

At this time, the 513 case was basically over, and everyone had nothing else to do, so they had to study this current case individually.

Those who are good at doing PPT are more comfortable. No matter how little evidence there is in the case, it will not affect them to do PPT.

The police officer who really had nothing to do went straight out to pick up the iron.

Changyang Municipal Bureau's conditions are relatively good. There is a gymnasium in the office building. It doesn't cost money for exercise or even private training, as long as people go.

Jiang Yuan looked at the burnt bone fragments over and over.

On his notebook, the values ​​are gradually listed:
Gender: Female.

Height: 165-172 cm.

Age: 22-25 years old.

When Jiang Yuan wrote the last entry, there was almost no one in the meeting room.

"Go back to the guest house and rest." Jiang Yuan edited a text message and sent it to the detachment leader Yu Wenshu.Call Wei Zhenguo again.

Wei Zhenguo rubbed his eyes, looked at his watch, and said with a smile, "It's past dinner time, am I asleep?"

"No snoring." Jiang Yuan comforted him.

"Have you figured out the bones?" Wei Zhenguo saw that Jiang Yuan had put away the evidence box.

Jiang Yuan nodded and said, "I don't know if it's useful or not. Let's look back at the feedback from the front line."

"You don't like it?" Wei Zhenguo and Jiang Yuan are too familiar, and he can easily guess part of his thoughts.

Jiang Yuan nodded slightly, and said: "Although it is an active case, it has been 15 days since the discovery of the case. It takes time to burn the corpse. It may take several days to burn the body to this extent."

"So, you're looking for someone who disappeared 20 days ago?"

"En. At least." Jiang Yuan nodded.This information is still too little, although it is extremely troublesome to get it.

When Jiang Yuan left the police station, Yu Wenshu's text message also came back, just a short "good" word, not redundant.

Jiang Yuan glanced at Wei Zhenguo and said, "Go back and rest, and see the results of the investigation tomorrow."

The next day.

Jiang Yuan, Wei Zhenguo and the others went to the unit after eating and drinking, and saw a group of people playing and beating in front of the detachment building, and there were things bouncing around.

When I got closer, I was sure that the jumping up and down was a lion dance, and Yu Wenshu was opposite the lion.

"Jiang Yuan, come here." Yu Wenshu beckoned Jiang Yuan over.

Jiang Yuan: "What's the matter?"

"This is the lion dance costume of Ruan Sijing's family." Yu Wenshu said: "His family will take the lion dance team out every year when it comes to festivals, especially during the Spring Festival, and perform everywhere. Ruan Sijing's case has been solved, and he The family came directly with the lion's head."

Jiang Yuan hesitated for a moment, and said, "The case hasn't been judged yet."

Yu Wenshu said: "For many families, knowing who it is is enough."

In a daze, the lion rushed up, shaking his head at Jiang Yuan.

Jiang Yuan reached out and touched the lion's head unconsciously.

The lion head stopped quietly, allowing Jiang Yuan to stroke it.

(End of this chapter)