Chapter 60: summer vacation

　　 July 31, afternoon.
　　 When Xu Qiu came to the laboratory, he found that the other three had already arrived.
　　 There are two men and two women, and the division of labor begins.
　　 Xu Qiu and Duan Yun each assigned a glove box.
　　 Xu Qiu is responsible for the spin-coated glove box:
　　First of all, clean the inside of the glove box, find out the packaging bags scattered in the corners, discarded disposable centrifuge tubes, and even the needles of syringes, and treat them as solid waste;
　　Secondly, treat the unused or unclaimed solution that has been prepared for a long time, and the last bit of solvent remaining in the reagent bottle as waste liquid.
　　Pour them into the waste liquid bottle, and mark the main components on the bottle, and finally collect them in a special waste liquid bucket. Of course, pay attention to matters such as acid and alkali cannot be mixed, oxidant and reducing agent cannot be mixed.
　　 In addition, the used reagent bottles should also be collected and handed over to the school designated recycling place along with the waste liquid.
　　 is mainly because the internal space of the glove box is limited. If it is not cleaned regularly, its interior will become more and more chaotic. This is also the embodiment of the second law of thermodynamics, the principle of entropy increase.
　　 Finally, we must guard against the impact of accidents.
　　 For example, during the summer vacation, the oxygen level in the glove box may exceed the standard due to power outages and other reasons. Therefore, it is necessary to protect precious drugs and reagents that are sensitive to oxygen.
On the outside of the spin-coating glove box, in addition to the small conveying compartment used to convey petri dishes and reagent bottles, there is also a large conveying compartment, which can convey a glue spreader and a slightly larger scale instrument, but the frequency of use is Very low.
　　At this time, its function is manifested. It can be used as a warehouse. Put precious medicines and reagents into it and fill it with nitrogen. The internal nitrogen atmosphere is no problem for 15 days.
　　 Duan Yun is in charge of the vapor deposition glove box.
　　Because this glove box is only used for vapor deposition and testing operations, there are no solvents, reagents, etc., so the interior is relatively clean and the cleaning is relatively simple.
　　 However, the evaporation residue left in the evaporation chamber needs to be cleaned up.
　　The vapor deposition cabin has two doors, one of which is inside the glove box. This door is usually used for deposition.
　　 The other door is directly connected to the outside world and can be opened from the outside.
　　 When cleaning, it is necessary to tightly close the inner door, open the outer door, and then extend the vacuum cleaner into the evaporation cabin to clean.
　　 After cleaning up, close the outside hatch and vacuumize the cabin.
Since air is filled into the cabin during the cleaning process, some oxygen molecules will be adsorbed inside the cabin. If vacuuming is carried out according to normal operation, it will take a long time to reach a vacuum of the order of 1E-5 Pa. time.
　　 Therefore, it is necessary to heat the outside of the vapor deposition chamber while pumping a vacuum to accelerate the desorption rate of oxygen molecules and greatly shorten the time required for the vacuum to reach the standard.
　　 The work of the two girls is relatively simple, mainly cleaning and organizing the laboratory.
　　 In addition to the regular sweeping and mopping, it also includes organizing the objects that are randomly placed in the laboratory.
　　 Tools such as tape, hex wrench, multimeter, etc. sometimes forget to put them back after use. When they are used again, they are difficult to find, so they need to be organized regularly.
　　 The four people worked together, and it only took more than two hours to complete the cleanup.
　　 They closed the windows, the air conditioner was turned on, set it to 20 degrees, and finally turned off the lights and closed the door and left the laboratory.
　　 The air conditioner is always on, because the temperature in the laboratory usually needs to be lower than 26 degrees, otherwise there will be safety hazards.
　　…………
　　Madu Station.
　　 Xu Qiu pulled a small suitcase, carrying a school bag, and got on the train home.
　　His hometown is a small five-tier city, and there is no high-speed rail and high-speed train directly from the city, so he bought a hard sleeper.
　　 A green leather car with the prefix Z takes more than 20 hours in total.
　　 "Dang Dang Dang Dang"
　　……
"Welcome to take this train. I will disturb you for a few minutes. I would like to introduce you a green health food dried blueberries from Tianshan, Xinjiang Province. The dried blueberries are small blue fruits, the fruit is similar to the round shape, and the flesh is delicate, sweet and delicious. "
　　……
　　 "Beer, beverage, mineral water, peanut and melon seed porridge, come, do you need it?"
　　……
　　 "Is there any need for the hot box lunch? The box lunch just out of the pot is 25 yuan per box."
　　 As the salesperson walked away, the two young people next to Xu Qiu exchanged:
　　 "I guess the price will be reduced when he comes back to sell the box lunch, 10 yuan or 15 yuan, believe it or not?"
　　 "I don't believe it, I'd better eat bubble noodles."
　　 Another person shook his head and said, digging out a box of sauerkraut noodles from the bag, and walked towards the hot water spot of the car.
　　……
　　 "Is there a need for a box lunch, it's the last one."
"how much is it?"
　　 "25 yuan."
　　 The young man hesitated for a while, and still said:
　　 "Come and support WeChat payment."
　　 "Scan the QR code here."
　　 Smelling the scent of rice, Xu Qiu also turned out a big bag from the bag, which contained supermarket-bought potato chips, braised eggs, sausages, spicy beef, instant noodles, yogurt and other foods.
　　 There are also two burgers I bought from Kaifengcai just before getting on the bus, which are still warm.
　　 Xu Qiu opened a hamburger box and gnawed.
　　…………
　　 After a day and night journey, the train finally arrived.
　　 Xu Qiu contacted his parents in advance and learned that his father Xu Hongwen was driving his mother Bai Xiaofen, and UU Reading www.uukanshu.com picked up the station together.
　　 In the fifth-tier cities, there is not much traffic at the station. As soon as he got out of the station, Xu Qiu saw his parents and walked towards them.
　　Bai Xiaofen looked at Xu Qiu carefully and said:
　　 "I lost weight, didn't you eat well at school?"
　　 "I have never missed three meals a day," Xu Qiu said in disbelief:
　　 "Besides, where did I lose weight, my weight hasn't changed for three to five years, and the fluctuation is less than ten kilograms."
　　 "How about at school, have you talked about your girlfriend?" Bai Xiaofen said.
"not yet."
　　 "You have to hurry up," Bai Xiaofen said bitterly:
　　 "Let me tell you, if you are not looking for a girlfriend at school now, it will be difficult to find a girlfriend when you leave the campus."
　　 "I know, I will work hard." Xu Qiu felt a little big head, and looked at the driver's seat asking for help.
　　 But Xu Hongwen just smiled and didn't speak.
　　 "How about the insurance research, have you contacted the tutor?" Bai Xiaofen asked again.
　　……
　　The topic all the way around is Xu Qiu.
　　…………
　　 When he got home, Xu Qiu came to his room while his parents went to the kitchen to prepare dinner.
　　 He put his luggage away, lay on his big bed, and began to think about his schedule during the summer vacation.
　　 The vacation is only 15 days. Excluding the time on the road, it is actually less than 13 days. In addition to walking with relatives, it takes time to eat out. Basically, there are no days of vacation.
　　 Therefore, he does not plan to arrange time for experiments, and there is no experimental direction at the moment.
　　 In the end, he decided to exercise for almost 1 hour a day, 1 hour to read literature, and 2 hours to write articles.
　　 This is almost the end of the holiday, and the article is basically completed.