The expected scene of the rival in love did not appear, and the boys watching on the playground couldn't help but feel a little uninterested. The girls looked at Ouyang Yun walking towards the office building and felt that his not-tall figure suddenly became clear - no one thought he was a coward, but on the contrary, this added to him the charm of a lot of mature men. Many people couldn't help but bit their lips, and in a trance there was a secret belonging to summer.

When Ouyang Yun just glanced at the crowd, he didn't find the students from the Special Service Brigade. He was very pleased. At this time, they should still be in the laboratory, right? He was ashamed to say that, after all, he only knew some theoretical knowledge, and his hands-on ability was worse than those students. Things like cultivating penicillin primitive bacteria can only be left to them to do - this is the sorrow of plagiarists, just pseudo-experts, and they are not useful!

The main projects of the Special Service Brigade's current scientific research are transistors and penicillin.

Historically, the emergence of transistors was first invented on December 23, 1947 by Shockley's group at the famous American Bell Laboratory, and then quickly replaced the position of electron tubes in the electronics industry, thus creating a milestone in the modern electronics industry. The so-called transistors are solid electronic components made of semiconductors, and the most common application materials are germanium and silicon. Since germanium and silicon both exist in natural substances in chemical states, there is no high-purity germanium and silicon, the first step in the research of a group of scholars is to find a way to purify germanium and silicon from substances such as soot and silicate.

Penicillin, that is, penicillin, can only produce natural penicillin under the conditions that Ouyang Yun can use at present. In order to achieve large-scale production of penicillin, there are only two steps: first, strain fermentation: inoculate Penicillium yellow-producing bacteria on solid culture medium, and cultivate at 25℃ for 7 to 10 days to obtain penicillium spore culture culture. Then use sterile water to make a suspension and inoculate the sterilized culture medium in the seed tank, pass it into sterile air, stir, and cultivate it at 27℃ for 24 to 28 hours, and then inoculate the seed culture medium into the fermentation tank.

The culture medium containing phenylacetic acid precursor was introduced into the culture medium containing phenylacetic acid precursor, stirred, and cultivated at 27°C for 7 days. During the fermentation process, the phenylacetic acid precursor and an appropriate amount of culture medium were added. Then, the extraction and purification: the penicillin fermentation liquid was cooled and filtered. The filtrate was extracted with butyl acetate in the extraction machine under pH 2 to 2.5 to obtain the butyl ester extract, and then transferred to the buffer solution of pH 7.0 to 7.2, and then transferred to butyl ester. The butyl ester extract was decolorized by activated carbon, added to salt agent, and azeotropic distillation to obtain the penicillin G potassium salt.

Since Ouyang Yun’s so-called mass production method of penicillin was plagiarized and is a relatively modern production method, and in China, due to the weak chemical foundation, such as butyl acetate and phenylacetic acid, they must find ways to find other alternative culture fluids and extracts - this is also one of the reasons why Ouyang Yun wanted to start a chemical company.

Speaking of military industry, Ouyang Yun originally planned to plagiarize some designs and other things as much as possible, and it is best to be super affordable and easy to build. China's current industrial strength is like this. Although he wore the hat of an American overseas Chinese, he suddenly made something like Su 27. Who knows what the surrounding countries would think. The so-called big tree attracts wind and causes eye effects may not be a good thing. In terms of light weapons, he originally wanted to fix the AK-47 and get some grenades, but he read too much computer information.

He found that at about the same time, there was a gun that was even more powerful than the AK-47, that was the G3 automatic rifle launched by the Federal Republic of Germany in 1957. Compared with the AK-47, the G3 not only had a range of about 100 meters, but also because stamping parts were generally used and machined parts were fewer, so the production process was not high. More importantly, since the G3's barrel was longer and the caliber was 7.62MM, and with a slight improvement based on this, a variety of gun types including submachine guns and blocking rifles could be derived.

In terms of machine guns, Germany's MG42 universal machine gun is naturally the first choice. It only needs to change the mode of supplying ammunition. Then it can not only provide main fire cover for the squad and platoons as a light machine gun, but also provide important fire support for large units such as battalions and companies. What's more valuable is that it can also crash into armored vehicles and tanks and become a vehicle-mounted machine gun. If the two guns are equipped together, it can become an anti-aircraft machine gun.

Since the domestic army generally lacks air defense weapons, if this machine gun once it becomes large, with the arrogant and domineering habits developed by the Japanese aviation army on the Chinese battlefield, it is estimated that once the Pingjin war begins, the MG42 will definitely become a nightmare for Japanese pilots.

The only problem is that since G3 uses 7.62MM caliber bullets and MG42 uses 7.92 caliber bullets, solving the universality of bullets has become a problem that the three groups of scholars must consider. Since Ouyang Yun provided the drawings, the three groups of scholars quickly made a model with wood, and then with the help of the ideas provided by Ouyang Yun, a single MG42 was designed with a light, heavy and double-connected style. The drawings of MG42 given to them were single, and the reason for this was to cultivate their hands and brain-operating capabilities. The MG42 changed from a light machine gun to a heavy machine gun, and only changed the bullet supply method, but only double-connected and air-to-air sights were installed to change to an anti-aircraft machine gun. However, since air-to-air sights involved the problem of curved shooting, the corresponding data must be obtained through actual experiments, so the scholars could not come up with a specific plan for a while.

The Special Service Brigade is Ouyang Yun's treasure. In his mind, its importance is no less than the computer that traveled through time. So his security work has always been emphasized. He came here today to check the security status, and to take three groups of students to Ren Qiu.

Speaking of which, Stu Leiden, an old American man, is really good. I don’t know if it’s because he has been in China for a long time. He does not have the inherent dullness of Westerners. He not only allocated a small building as the residence of the Special Service Brigade and the security forces, but also arranged a training place for them. These places, including the laboratory, are all controlled by the Hu Tong and Ren Qiu Special Police Squadron, and outsiders cannot enter. Ouyang Yun just appeared twenty meters outside the gate of the experimental building. A Hu Tong scholar stood out from behind a tree and instinctively said: "Please stop..." Before he finished speaking, he saw clearly that it was a brigade seat and hurriedly said: "Report to the brigade seat, Hu Tong soldier Hou Jiaqiang is on duty! Are you going to the experimental building?"

"Yes!" Ouyang Yun saluted a military salute and took out his pass.

Hou Jiaqiang took it over and took a closer look, then put him in.

Hou Jiaqiang's serious and responsible attitude made Ouyang Yun appreciate it very much, and he was a little proud, thinking that he looked like a regular army. Then he passed two more guard posts before entering the laboratory.

Yanda Laboratory has three buildings, two floors and two floors. It turned out that there were only two laboratories. One of the other rooms was used as a warehouse, and three were vacant. Under the rearrangement of the Special Service Brigade, one became a guard room, the laboratory became three, and the other was a conference room.

Ouyang Yun first walked into the mechanical laboratories of three groups. Several scholars were debating the issue of bullet diameter around the MG42 and G3 models. He listened quietly for a while and finally reached an agreement. He thought that changing the G3 bullet diameter to 7.92 was better. He smiled and said, "Yes, as a machine gun, especially for airborne, the impact effect will be greatly reduced. But you haven't considered this. The aircraft is steel or alloy products. Can bullets usually penetrate?"

The students only noticed him at this time, and many people shouted in surprise: "Hostel?" and then saluted one after another.

Ouyang Yun returned a military salute, then smiled and picked up the MG42 model, played with it for a while and said, "It's not bad, who made it? The carpenter's skills are good."

Everyone looked at Gao Tian, ​​who touched his head and smiled silly, "My father used to be a carpenter, so I followed him and learned a little."

"Bring the model with me and go back to Renqiu, our military factory is about to be started."

"Really?!" "That's great!"...

Ouyang Yun greeted them for a while, asked them to go back to the dormitory to pack their luggage, waited for him to ask them to go back to Renqiu together, and then went to the laboratories of Group One and Group Two on the second floor, visited the other two groups of students, and checked their experimental progress. Since they were in an unknown field and there was no precedent for reference at all, most people were looking through the data, and the corn used as culture medium in the second group is still intact.

He knew that this matter was too urgent and he had no good ideas for reference. He encouraged them and went downstairs to the principal's office to ask for Stu Leiden.

The old American man really helped him a lot. He came to him to thank him in person for the matter of the Special Service Brigade, and in addition, he wanted to ask him to help apply for a visa.

Originally, the Americans did not set up a consulate in Peking. For the sake of visa, Jiang Shuren also traveled to Nanjing with the certificate issued by Stu Leiden. However, due to the change in the inspection team, many of the merchants withdrew, and that visa was a waste of time. Now, due to Song Zheyuan's instruction, the gang forces in Ping and Tianjin began to take some "road" measures against the Japanese; coupled with Jiang Shuren's efforts, an iron ore screening factory was opened in the Yidong area and a steel mill was built in southeastern Renqiu. With the role of Gu Xudong and Shanglang as the role model, the inspection team added fresh blood and finally could go on a journey. Fortunately, just a few days ago, the Americans actually set up a consulate in Peking, so that the visa was much more convenient.

The Americans' actions were somewhat strange, and even caused the imagination of many politicians. You should know that the 29th Army is now clearly a local government, and Peking is equivalent to the "capital" of this small kingdom. What is the intention of the Americans to open a consular office here? If someone is lucky enough to know two American spies, George and Robson, it may not be difficult to find the answer; of course, it may also be related to Gu Lianyun.
Chapter completed!