Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

Chapter 111 The Discovery on the Corpse
The Haizhou Criminal Investigation Detachment has had a little more financial support in recent years.

Since there are several murders every year, autopsies are relatively frequent.

Five years ago, after Wang Changjiang put forward more than a dozen rationalization suggestions for many years, the forensic doctor finally had his own dissecting room.

Since then, Wang Changjiang's main workplace has shifted from the funeral home to the Criminal Investigation Detachment.

In the spacious and bright anatomy room, the walls are covered with square white tiles, and the floor is covered with square white tiles.

Compared with the eerie funeral home, Wang Changjiang often told Shen Yan that your generation of forensic doctors is much happier.

What he did back then, speaking out now, is no different from telling horror stories.

Of course, there is no difference. When the conditions were not good a few years ago, Wang Changjiang basically slept in the funeral home when he encountered a case.

A dissecting table made of bricks and cement placed the corpse, and a camp bed placed Wang Changjiang.

In the cold storage next door are a dozen or even dozens of neighbors who cannot speak.

In this way, in the middle of the night, he might be woken up by the leader who came to ask for the results of the autopsy.

Dissecting a dead body so tired that I fell asleep and was woken up...

Wang Changjiang will never forget the experience of that year for the rest of his life.

Shen Yan graduated from the Public Security University and is a lesbian. She was always fully armed when performing autopsies.

Three-layer rubber gloves, isolation clothing, and two KN95 masks.

Since the corpse was frozen and had no smell, Shen Yan didn't wear a gas mask today.

In fact, these things are already standard equipment for forensic doctors, but as a senior forensic doctor, Wang Changjiang doesn't think so.

"Xiao Lu, do you want to do the examination now, or wait for the body to thaw?"

It's not the first time Lu Chuan has come to the dissection room. He has been here many times when he was helping to analyze the bones.

"Now, when the body is thawed, there will be water stains on the body surface, and some small traces may be destroyed by then."

Wang Changjiang nodded: "Okay, let Xiao Shen help you, call me if there is anything you can't fix."

Wang Changjiang is also someone who has been there, and knows what is romantic and what is the beauty of an adult.

"What do you need me to do?"

Shen Yan, who was wearing a mask, blinked her two big eyes, and her long eyelashes could move the heartstrings.

Lu Chuan shook his head: "I'll check the front of the corpse first, and just turn over the corpse for me later."

Trace physical evidence collection is somewhat different from general physical evidence collection.

Need to use some special equipment, such as magnifying glass, such as strong light source, such as ultraviolet inspection lamp and so on.

The first thing Lu Chuan used was an ultraviolet inspection lamp.

This is the standard configuration tool for trace inspection and forensic medicine.

It is generally portable, and its working principle is similar to that of the ultraviolet light of the banknote detector, but the light wavelength of the two is different.

The wave band of the police ultraviolet inspection lamp used by current survey and forensic medicine is generally at 365 nanometers, and the ultraviolet light band on the money detector is at 395 nanometers.

Shen Yan also often used ultraviolet light to check the surface of the corpse during the dissection, and turned around naturally to turn off the conventional light source in the dissection room - the lighting.

The inspection lamp glowing with purple light irradiated the surface of the corpse from top to bottom.

Huh?
When the light inspected her wrist, Shen Yan said softly: "Is this... tape marks?"

Lu Chuan nodded: "It should be traces of tape binding."

Bundled with tape, because of the large force-bearing area, it will not leave strangulation marks on the corpse, but the glue on the tape will remain.

Under the irradiation of ultraviolet inspection lamps, it is undoubtedly revealed.

After checking, the two found similar marks on the ankle of the corpse.

"Wait a minute, I will go again with the lantern."

Lu Chuan's so-called horse lantern is actually an LED strong light, which is an important tool for Lu Chuan to collect trace evidence this time.

The utilization of light sources is an important tool for site survey work.

For example, the last time Lu Chuan used a variable frequency laser scanner to extract fingerprints on envelopes non-destructively.

For example, the tape tie mark that the UV inspection lamp just found.

Different light sources play an important role in field surveys and forensic autopsies.

Strong light, which can emit more intense light than the sun, has great energy characteristics.

This high-energy light source can make some subtle items invisible to the naked eye glow or brighten.

Including tiny fibers, hairs, etc.

The reason why it is called a horse lantern is because the first application of this kind of strong light source in site surveys originated abroad.

Abroad, this kind of light source is called Luma lantern, but in China, it is generally referred to simply as horse lantern.

The horse lantern beams worn above the head were like laser beams, sweeping over the corpse inch by inch.

"here!"

Shen Yan pointed to a place that reflected a light yellow halo, which was located on the lower left rib of the corpse: "There is something here."

Holding tweezers in his right hand, Lu Chuan twisted up a few hairs that looked transparent to the naked eye, and put them into a special transparent plastic tube.

For the storage of trace evidence, ordinary evidence bags cannot be used, but plastic tubes.

After sealing, Lu Chuan continued to scan: "The front is gone, let's look behind the corpse."

Shen Yan nodded, and stepped forward to help Lu Chuan: "I haven't used these things before."

In the past two years, although Shen Yan had dissected several corpses, it was obvious that she had never done such meticulous work.

Frozen corpses, very heavy.

Generally speaking, the ratio of female forensic doctors is relatively small, about fifty to one.

The reason isn't that women are timid, it's quite the opposite, women can be bolder than most men.

Nurses, for example, have a very large proportion of women.

No matter what department the nurses are in, they will always see blood, but it is rare to hear anyone saying that they are afraid.

The main reason why the proportion of women in forensic medicine is small is that it is a physical activity.

Unlike doctors and nurses, their working objects are living people.

Although it may be a living person who will not live soon, but it is alive after all.

A living person can move, but a dead person is different, as a dead person cannot move.

Opening the mouth, sawing the bones and turning the internal organs, any of these items are extremely labor-intensive.

Shen Yan has been in the police for two years, and the autopsies she did were all auxiliary in nature, and Wang Changjiang had to do the hard work.

The subsequent examination was relatively simple and smooth. Under the illumination of the lantern, hairs similar to those on the left lower rib were found on the back and buttocks of the deceased.

Then, Lu Chuan extracted residual substances from the mouth, cheeks and lower body of the deceased.

There are also fine substances in the crevices of the nails, which are also extracted with bamboo sticks.

This set of tossing down took almost two hours.

The tired Shen Yan was out of breath, her majestic chest rose and fell one after another.

"Okay, all that's left is to send these things to the provincial department and wait for the analysis results."

Lu Chuan also did his best to obey the destiny.

Trace physical evidence is useful, but in actual cases, it is rarely used.

This time, Lu Chuan also decided to give it a try after he obtained the intermediate survey skills and was capable of collecting trace evidence.

Shen Yan took off her mask, isolation suit and gloves: "The body will almost be thawed tomorrow morning, and we will do an autopsy."

(End of this chapter)