return of spontaneous circulation algorithm
Mining mines prone to spontaneous combustion and spontaneous combustion of coal seams
A series of fire prevention and extinguishing measures should be taken in mines that are prone to spontaneous combustion and spontaneous combustion coal seams. These measures include setting up observation stations or observation points for spontaneous combustion, arranging them in rock formations or coal seams that are not easy to spontaneously combust, adopting retreating mining, leaving no roof protection coal, etc. In addition, it was necessary to prepare a special design for mine fire prevention and extinguishing, and adopt technical means such as injecting mortar, injecting noble gas, spraying chemical inhibition agent, etc. to implement active prevention. The mine should also establish a natural combustion monitoring system to detect and discover changes in gas concentration and temperature in a timely manner, and carry out early warning and measures to improve and improve. Comprehensively consider the management of the goaf after mining, the fire prevention and extinguishing needs of the adjacent working faces and adjacent coal seams to ensure safe mining.
1 answer
2024-12-24 01:54
What are the best spontaneous stories?
A best spontaneous story could be a family picnic. The family wakes up one sunny morning and just decides to pack some food and head to the park. There, they start playing games, and then some stray dogs come over. Instead of being scared, they befriend the dogs and have a great time together. It was all unplanned but filled with so much joy and laughter.
1 answer
2024-11-03 13:23
Reverse spontaneous reaction conditions
For a chemical reaction, one could judge the spontaneous nature of the reaction by the Gibbs free energy (? G=? H-T? S). When AG>0, the reaction proceeded spontaneously in reverse.
1. ** Analysis from the perspective of the change in the change in the temperature (? H) and the change in the temperature (? S)**
- When a reaction that absorbs heat (Delta H>0) and reduces the entropies (Delta S<0), it must be a non-spontaneous reaction (forward), which is a reverse spontaneous reaction, because according to Delta G= Delta H-T Delta S, in this case, Delta G must be greater than 0.
- For the reaction of decreasing entropies (? S<0) with an exothermic reaction (? H<0), increasing the temperature will make the reaction reverse spontaneously, because it is necessary to ensure that? G>0 (from? G=? H-T? S, when? H<0,? S<0, increasing T will increase? G and make it greater than 0).
- For a reaction with an increase in entropies (? S>0) that is an encircling heat (? H>0), lowering the temperature will make the reaction reverse spontaneously, because it is necessary to ensure that? G>0 (from? G=? H-T? S, when? H>0,? S>0, a decrease in T will increase? G and make it greater than 0).
2. ** Analysis from the perspective of equilibrium constant (for a irreversible reaction)**
- If the equilibrium constant of a reaction is K, when the reaction quotient J>K, the reaction will proceed spontaneously in the opposite direction. The equilibrium constant K is related to the standard mole Gibbs free energy change of the reaction, which can be calculated by the formula, where R is the gas constant and T is the temperature. The expression of the reaction quotient J is similar to the equilibrium constant K, except that the concentration or partial pressure is the actual value of the reaction at a certain time. When J>K, the reaction proceeded spontaneously in the opposite direction according to the equation:
<a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
1 answer
2026-09-29 02:37
What is the difference between biological circulation and lung circulation?
There were differences between the circulatory system and the lung system in the following aspects:
1. ** Cycle Starting Point **:
- The circulation of the body started from the left atrium. After the blood was pumped out of the left atrium, it flowed through the main artery and its branches to reach all parts of the body.
- The lung circulation started from the right heart. Venous blood was pumped out by the right heart and reached the capillaries around the lungs through the lung artery.
2. ** Loop Path **:
- The pathway of the body circulation was left ventriculus, main artery, small arteries, capillaries, small veins, superior and inferior venae cava, and right atrium. The blood flowed through the main artery and its branches to reach the capillaries of the whole body. After exchanging substances and gases in the tissues, it then flowed into the superior and inferior cava through various veins and returned to the right atrium.
- The pathway of the lung circulation was the right ventriculus, the lung artery, the capillaries around the lung, the lung vein, and the left atrium. The blood reached the lungs through the pulmonic artery. After completing the gas exchange in the lungs, it returned to the left atrium through the pulmonic vein.
3. ** Cycle Distance **:
- The circulation of the body was long and could reach all parts of the body.
- The lung circulation pathway was shorter than the body circulation, and it only passed through the lungs.
4. ** Changes in blood properties **:
- In the circulatory system, the oxygen and nutrients in the blood were absorbed by the tissues, while the carbon dioxide and other metabolism products in the tissues entered the blood, turning the artery blood into venous blood.
- In the lung circulation, the venous blood would expel carbon dioxide from the lungs, absorb fresh oxygen, and turn into artery blood.
5. ** Biological meaning **:
- The circulatory system nourished all parts of the body with the blood from the arteries and transported the metabolism products and carbon dioxide back to the heart.
- The main function of the lung circulation is to transform venous blood into the blood of the arteries, which is rich in oxygen.
<a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
1 answer
2026-10-01 17:00
What does spontaneous action mean?
Self-motivation refers to a situation that occurs naturally without being affected by external forces. As opposed to " self-awareness," it is an activity that people do not know or master objective laws. For example, in the absence of external coercion or guidance, the family committee decided to buy paint to renovate the classroom and let the parents share the cost, the villagers decided to collect fees from the people who went into the mountains to dig wild vegetables, and the animals interacted with the staff without any external special guidance.
1 answer
2026-07-15 16:52
g greater than 0 is a spontaneous reaction
According to the Gibbs free energy criterion, the reaction can proceed spontaneously if G<0, but not if G<0. Therefore, the reaction is not spontaneous when G>0.
<a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
1 answer
2026-07-02 03:13
vegetable recognition algorithm
0 answer
2025-01-04 16:54
Distance measurement algorithm
The following is an algorithm for measuring distance with fingers (using the thumb as an example): Raise your right arm horizontally, make a fist with your right hand, and raise your thumb. Using his right eye (left eye closed), he overlapped the left side of his thumb with the target in a straight line. If the right arm and thumb were still, he would close his right eye and observe the left side of the thumb with his left eye. He would find that the boundary was a distance away from the right side of the target. He estimated the distance and multiplied it by 10. The result was the approximate distance to the target. This method required a certain amount of experience, and there were some objective things that could provide some reference. For example, the size of the house and the distance between the houses were generally about 10 meters, or the distance between the utility poles was 50 meters, the town utility poles were 100 meters, and the high-voltage power was 200 meters. He still needed to practice more to be able to use it skillfully, and the measurement error would be smaller. The other way was to place your thumb in front of you (with your arm fully extended) and close one eye. Hover your thumb over an object of known size (such as a car). In the case of not moving the thumb, close the open eye and open the other eye to estimate the distance that the thumb has "moved" relative to the object you are looking at. For example, the length of a car is known to be about 4.5 meters. If the thumb moves half of the length of the car (about 2.25 meters), multiply the result by 10 to obtain the approximate distance between the car and you (in this case, about 22.5 meters).
<a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
1 answer
2026-06-29 03:23
The most accurate algorithm
Here are some betting tips:
1. ** Cold Tracking **: Cold refers to the phenomenon of missing numbers in the process of individual or group numbers gradually increasing in the lottery period. It is another form of hidden numbers after the dominant number.
2. ** N-Code Duplicated Pack Number **: Duplicated N-Code Double-Throw was widely used in the lottery market. The advantage of this method was that it was easy to bet after killing several numbers accurately, and the probability of winning was high.
3. Single Stare Double Shot: When the trend is extremely symmetrical and the inspiration is strong, it is even more wonderful to hit the bullseye with a single Stare Double Shot.
4. [Pyramid Betting Method (applicable when multiple cold states appear at the same time): List all the popular numbers, then rank them according to the comprehensive index, and then carry out multiple bets of different amounts. Finally, select a multi-bet single-number multiple bet.]
It should be noted that although there are these betting techniques, there is no guarantee that you will win the game with absolute accuracy. Buying lottery tickets should be rational and calm to avoid over-investment.
The novel "Watching the Moon on Fish Island" is equally exciting. Everyone is welcome to click and read it!
1 answer
2026-06-29 01:04
Fated star algorithm
There were two commonly used formulas for calculating male and female Fated Stars. For a man's life,(100 minus the year of birth) divide by 9; for a woman's life,(two numbers after the year of birth minus 4) divide by 9, and the remainder will be the life hexagram. If there is no remainder, the remainder will be regarded as 9. According to the Postnatal Book of Luo, people's fate hexagrams were Kan 1, Kun 2, Zhen 3, Xun 4, Qian 6, Dui 7, Gen 8, and Li 9. Men's life is 5 hours, and it is Kun's life when they are in Kun Palace. Women's life is 5 hours, and it is Gen's life when they are in Gen Palace. There was another method: add the number of the Gregorian calendar until you get a number within ten (represented by A). Male life = 11 - A, female life = 4 + A. If the result was greater than nine, then nine would be deducted. With this number and the eight trigrams, the male and female fate hexagrams would be obtained.
The TV series "Heavenly Couple" had the same name as the original novel. The original plot was equally exciting. Everyone could click on the link below to read the original novel.
1 answer
2026-07-23 19:55
Popular Answers
Popular Searches
a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
s
t
u
v
w
x
y
z