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How does pressure calculate force

Publish: 2021-04-24 12:57:51
1. Pressure = pressure * force area (F = PS), pressure = pressure / pressure area (P = f / s). Pressure in physics refers to the force acting on the contact surface of two objects, or the vertical force of gas on the surface of solid and liquid, or the vertical force of liquid on the surface of solid. Traditionally, in mechanics and most engineering disciplines, "stress."
2. There is no solution to this question. Because the pressure that the vessel wall can bear is related to the material, thickness and diameter of the vessel wall. The allowable stress should be determined according to the type of steel plate, and the wall thickness should be calculated according to the formula according to the diameter and pressure of the vessel. Please refer to books on pressure vessels&# 92; r\ N further: & 92; r\ The design, manufacture, installation and operation of pressure vessels have strict rules and regulations, which are managed by the Labor Department of the government. The relevant units need to have certain qualifications and be approved before they can carry out the design, manufacture and installation. Operators must also be trained&# 92; r\ N 150 atmospheric pressure is already a high-pressure vessel, so you can't do it casually.
3. Work is the accumulation of force in space, which reflects the action of the outside world on the object. The mathematical expression of work is
W = fscos α
F is the force acting on the object, s is the displacement of the object, α It is the angle between the positive direction of force F and displacement s
the work done by gravity on the inclined plane is the proct of the distance of the object moving along the direction of force and the force
4. I think the central hospital is OK

What do you do in such a famous hospital<

the salary is about the same, and the most important thing is that if you can't learn something, you should find a hospital that is not very good but not bad
5.

The main responsibilities of 120 emergency center include:

1. Responsible for the reception of local "120" call for help

2. Be responsible for the command and scheling of pre hospital emergency medical treatment in the county, so as to rece the radiation radius of emergency, accelerate the emergency response as the goal, treat patients conveniently, quickly, effectively and systematically, make rational use of health resources, and better serve the patients

The whole system consists of digital dispatching switch (programmable voice card), digital synchronous recording time system based on computer information network, electronic map system (GIS), satellite positioning monitoring system (GPS) and 120 medical emergency alarm system

Emergency command vehicle, equipped with multi parameter monitor, ventilator, electrocardiograph, defibrillation pacemaker, sputum aspirator and other advanced emergency medical equipment and emergency medicine, 24-hour on ty, responsible for their own urban pre hospital emergency medical services

Strengthen the contact and communication with pre hospital emergency personnel, listen to the opinions of the masses and accept the supervision of the masses&# 8194;

reference source: network-120

reference source: phoenix net - first aid, whether it is necessary to "let professionals do professional things"

6. Do you mean the salary of a surgeon or a physician or a nurse? The basic salary of general doctors is not very high. They all depend on the bonus
7. For reference:
a typical sample of the work of emergency doctors
in addition to being busy with rescuing and seeing a doctor all day long, Liu Yong, as the director of the emergency department, often thinks about China's current 120

compared with foreign 120 emergency system, China's 120 emergency system is not comparable, "the gap is too big", which is the consensus of many emergency doctors, "China's emergency system still has a lot to do"

the threshold for doctors to enter the emergency system should be raised, and the quality of talents should be guaranteed. This kind of threshold setting is not only reflected in the entrance examination and graation examination, but also should increase the difficulty in the entrance examination“ Of course, the assessment of emergency doctors is not only limited to the level of knowledge, but also the assessment of doctors' moral level. Liu Yong stressed that this kind of moral level is manifested in reverence for life, love for patients and good communication skills for patients

at present, it is a common fault for most hospitals to pay more attention to technical level than humanistic level in selecting emergency doctors

in addition, emergency doctors have to undertake all the first aid work before patients enter the emergency room. As an emergency doctor, every time there is a scene, he just faces the sudden scene by himself. He also needs strong pressure resistance and independent bearing ability

a "cruel" reality is that it is usually difficult to recruit suitable talents in hospital emergency department<

a month ago, Liu Hongmei, head of the personnel department of Beijing Emergency Center, went all over the major job fairs in Beijing and announced the recruitment information to the major networks, media and medical institutions in the city. However, as of June 28, Liu Hongmei had only received 14 resumes

since 2005, the number of undergraate graates recruited by Beijing Emergency Center has been decreasing year by year. This year to catch up with the economic crisis, Liu Hongmei originally thought that the "harvest" would be better, but after the relevant audit proceres, only four people were finally admitted

"it has a lot to do with the treatment of emergency doctors," Liu Yong said. Emergency doctors have high labor intensity, hard working environment, high responsibility risk and limited business development. However, this is not reflected in their salary. On the contrary, in some hospitals, the "status" of emergency doctors is quite low

another reason for most medical students to give up entering the emergency system is the high risk faced by emergency doctors“ It is necessary to establish a fair and scientific evaluation mechanism of medical malpractice. Liu Yong said that the role of this evaluation mechanism lies in "it is necessary to distinguish between the absolute misdiagnosis caused by the limitation of medical technology level and the relative misdiagnosis caused by the personal problems of doctors (such as the medical technology level and attitude of doctors)"

take myocarditis as an example, when an ordinary febrile patient is sent to the emergency room, most doctors will not consider the possibility of "myocarditis". It is understood that the incidence rate of "myocarditis" in febrile patients is 1/10000. "If every fever patient is sent in, they suspect myocarditis. All patients are allowed to perform ECG. The only response of the patient is the doctor's indiscriminate examination."

What if an emergency doctor happens to hit the "one in ten thousand" probability? Is it reasonable to attribute the "one in ten thousand" probability to doctors? Liu Yong said

in addition, for the medical disputes that doctors always encounter, from the perspective of maintaining the normal operation of the hospital and the legitimate rights and interests of doctors, Liu Yong believes that "hospitals should buy medical liability insurance for doctors"

and this proposal has already reached the consensus of the medical community. As early as 2007, in view of the rising trend of violence in hospitals in Guangzhou, which seriously interferes with the normal working order of hospitals, deputies to the Guangzhou Municipal People's Congress suggested that local laws and regulations should be formed as soon as possible and medical liability insurance should be promoted according to the practice of other regions<

under the current framework of solving medical trouble, medical trouble is usually a minor matter, which often ends with huge compensation from hospitals. "Medical liability insurance can recover the economic losses caused by medical treatment as much as possible."

the most important thing is "the government should do something and not do something". Liu Yong said“ When hospitals are violently attacked by some organizations with ulterior motives, such as medical trouble, the government should resolutely suppress them“ When the doctor-patient disputes cross the legal boundary, the inaction of the government and the law enforcement forces can not be explained by any "pains and pains"

and the "Inaction" lies in that the government should hand over the rewards and punishments of doctors, the identification of medical accidents and the settlement of medical disputes to the local medical association, and the government had better not intervene“ Only in this way can the medical disputes be solved peacefully< It is not easy to interview Liu Yong. Not because of the big name, but because he really doesn't have time. On the afternoon of the 6th, when he made an interview appointment with him, he interrupted 39 Health's request in a hurry. The noise from the microphone told me that the emergency department was "busy". Sure enough, Liu Yong politely told me that he was "busy now". Liu Yong was contacted for the second time until 8:36 p.m. at this time, Liu Yong's phone call was still busy. After trying to dial again several times, the author finally called in, but Liu Yong kindly reminded the author, "I'm not busy now. If I'm busy, I can't continue to accept the interview, please forgive me."

instead of taking out the interview outline in a stylized way, I had a casual chat with Liu Yong. This way allows me to capture more details and feel the image of a flesh and blood emergency doctor. This image is not "Gao Daquan" or "resentful wife". Like all doctors who stick to the front line of medical treatment, Liu Yong has a love for this job, a grievance for patients, and a helplessness for current systems. But despite the thorny road, Liu Yong has been in this position for 12 years and said he would choose to continue. The reason is that when he watched the dying lives being dragged back by himself and his colleagues from the hand of death, he was very happy and intoxicated

ring the interview, when it comes to the sense of achievement and the scene of the construction worker's resurrection, Liu Yong felt like yesterday. As for more deeds, Liu Yong said he would not talk more about them, because it is the doctor's "should" to save the dying and heal the wounded. But for the patients who don't understand the doctor, for the scenes of medical trouble, Liu Yong's mood is difficult to calm down. Like the scars on the body, good and rotten, perhaps, this pain will always be

"have you ever complained about medical emergency for 12 years"? There was a long silence over the microphone

"yes, but not for the work itself, but for some patients and their families," said Liu Yong

it's nearly ten o'clock in the night after the interview. When the prosperous city tends to be quiet, when busy people are ready to rest, emergency doctors are waiting for a new call.
8. I feel like it's "lost battle scene". If not, let's see if it's "the moon"
synopsis of the moon ······
in the future, with the rapid progress of science and technology, the pollution of the earth will become more and more serious. In order to curb this situation, an enterprise named YUENENG Instry Co., Ltd. came into being. The company is committed to the development of lunar energy, by collecting helium-3 to meet the earth's energy needs. Moon energy company has a base on the moon, Sam bell (SAM Rockwell) is the only staff on the base. Sam is a contract worker employed by the company. He has lived alone on the moon for three years, accompanied by intelligent robot Gotty (Kevin Spacey). Sam's boring life makes him want to return home. When he leaves the moon in two weeks, Sam encounters an accident. When he wakes up, he finds that Gordy seems to be hiding something from him, and the company's top management also refuses his return request. Sam took the opportunity to escape from the base, but found another himself at the site of the accident
9. This is not a movie, but an article from the 10th issue of 1998 - campus science fiction, written by Han Nan. This is an old Japanese fable - a lazy snake is so hungry that it can't find food, so it eats its tail. Then, when he felt hungry again, he quickly made a decision to eat the bottom half of himself. When he was hungry again, he ate his upper body... In this way, he ate his whole body
I used to think that this fable is just about laziness, and it is as unreal as a fairy tale
everything is e to an unfortunate accident. Now, I can only stand by the radio station on this red planet, waiting for the rescue in four months
in fact, I should be glad for my good luck. At least there is no bad weather here, and sufficient oxygen will not suffocate me. But there was a dead silence around me. I knew at a glance that I couldn't find any food here. And my current task is simple and clear: find food and live until the rescue ship arrives
I only have a little dry food, an old revolver that I love best - if I can't hunt with it, at least I can kill myself with it, a clone machine and some high-energy fuel. Although high-energy fuel can't be used as food, it can at least make a fire to keep warm, or barbecue food - although I don't have food. Although cloner is perfect, if you give it high-energy fuel and put a little more my skin, it will jump out of thin air. But now I am not in a hurry to an "I" to talk with me and share my meager dry food. The most annoying thing is that dry food can't be cloned
I need energy to sustain my life. Here, I just need to find food for four months. But what a distant wish it is...
a few days later, I sat on the ground and tried to consume as little energy as possible. I had finished my dry food. Well, when there is no food, men can support for seven days. Holding that gorgeous pistol, I think half of my mind is suicide or starvation. The other half of my mind continues to think about the source of food. Although I have been thinking for several days and have no idea, I still feel like a drowning man trying to catch a straw. Now, the feeling of hunger is eating me, I'm already eating my own arm
high energy fuel also decomposes into light and heat in the furnace. I look at the warm flame in despair, and can't help thinking about it. An idea like a flash: cloning machine is my hope. I was so excited that I turned the feeling of hunger into motivation, and immediately took action to strive for survival...
it was only after the meat in the cloning machine was shaped that I realized that the piece of meat I was salivating for was a fetus, in fact, it was me
of course, what I subconsciously put in is my skin. But he's me, and in a few hours, he'll be as big as me, with the same way of thinking and face, and my memory. He will come out of the clone machine and be my food for many days to come. I'm afraid, I can't face the cruel reality, but I don't have the courage to stop cloning, he is my hope for survival. I know that if I want to support for four months, this process will not be only once, and a can not let me eat for four months. I'm at a loss between hope and fear
time, as I struggle with my remorse and desire, flows away quietly. During those hours, I played with the pistol, thinking about my choice of "to live or to die.". I gave myself many reasons to live: it's just the form of energy. Since the chicken or pig that the energy becomes, I will eat it without hesitation, why can't I eat the person who is also the proct of energy
finally, I had to face him, and then I found that all my reasons were so powerless in front of him. How can I reason with him first and persuade him to be my lunch? no way. I'm ready to shoot him without saying a word, and I thought that would make me feel better< However, he spoke first
he seems to come leisurely with a malicious smile, just like when I am still full of food: "I know what you want to do. Do you wish I didn't hate you? Of course, I know you have to. " I was so moved“ Of course, I was cloned. I was born after you. You have a gun in your hand, so I made lunch instead of you. By the way, don't forget to fill my intestines with meat to make sausage. It's not easy to deteriorate. " He gloated as if it had nothing to do with him. This asshole, he knows my weakness in heart best. He knows that his words will be engraved in my heart forever and become a nightmare of my life
there was a vicious smile in his eyes. I'm starting to hate him. He's supposed to be the victim, and I'm going to be the murderer. He has determined to use the last chance to deepen my pain, which is my consistent style. I hope he can taste the pain, even at the cost of my life. So I decided
as like as two peas, I try to keep my mood stable: "you see, we are exactly the same, so we should have the same opportunity." He was silent“ We should all have a chance to live. " I know he can't refuse, "come on, make a bet." I grabbed the pistol, put in a bullet, and turned the wheel. It's an old and cruel gamble. Within six shots at most, the bullet will penetrate one of us in the head and turn one of us into a corpse, a piece of meat and a pile of food. The one who survives will suffer from the attack of conscience and humanity, gnawing at his own bones and drinking his own blood. In fact, I don't know which ending is better
he laughs bitterly: "well, you know I can't refuse." He came over, picked up the gun, we four eyes relative, the heart seems to have experienced a lot of vicissitudes in an instant“ I'll come first. After all, I'm a clone. " He held the pistol against his temple. Really, we will not know when the death will happen in the first shot, will fall on whose head; But we all know that one of us has to die. Death may be in the first shot...
he suddenly remembered that he had no last words and said, "if I die, don't be afraid, I won't blame you. It's all for survival. " I replied, "if it's me, don't waste it!" We all laughed, but we all shed tears...
maybe a good story doesn't need an ending, but I hope the story is complete
after four months, I can't remember how many times I gambled like this, and I don't know whether I was the original me. All I know is that there are a lot of "I" wrecks buried in a few simple mounds outside. I only know that at the beginning, I had little chance to survive in "gambling", because I escaped once and waited for the second time. I only know that all for survival is my deep-rooted belief
in the distance, there was the roar of the rescue ship
one nightmare is over at last, but I know that another eternal nightmare has just begun
10.

To determine the type of organizational structure of the enterprise. Organizational structure types are divided into: limited company system, subsidiary system, chain system, business division system, branch system. According to the specific situation (such as the division of departments, the division of department personnel functions), the enterprise should formulate a specific, overall and personalized organization chart, and each department should also formulate a specific, specific and subdivided organization chart

after a single, specific and subdivided organization chart of a small department is completed, it is combined to form the organization chart of the whole department, and then the organization chart of each department (such as proction center, administrative center, marketing center and other departments) is combined to form the organization chart of the whole enterprise

extended data

organization chart is not a fixed format. The key is to consider whether it meets the needs of the company's development strategy. The function of organization structure is to divide the related work in order to achieve the strategic effect. Therefore, it is necessary to formulate a specific personalized organization chart according to the specific situation of the enterprise

there may be various types of combinations when an enterprise actually formulates an organization chart. For example, business unit system + limited company system, business unit system + branch / subsidiary system, etc. The organization chart of each instry is different, the division of different instry departments, the functions of department personnel, and the required personnel are different

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