How is it possible that combustible ice under the sea floor was formed?

How is it possible that combustible ice under the sea floor was formed? Combustible ice is formed by ocean plate activity. When the ocean plate sinks, the older seabed crust will sink into the earth's interior, and the oil and natural gas on the seabed will rush to the surface with the edge of the plate. When exposed to cold seawater and deep sea pressure, natural gas reacts with seawater to form hydrate. Scientists estimate that the distribution of combustible ice on the seabed accounts for about 10% of the total ocean area, equivalent to 40 million square kilometers. It is by far the most valuable mineral resource on the seabed, enough for human use 1000 years. There are three basic conditions for the formation of "combustible ice": first, the temperature should not be too high, it can be formed above zero, 0- 10℃ is appropriate, and the maximum limit is about 20℃, and then it will decompose. The second pressure should be enough, but not too great. At zero degree, it may be generated above 30 atmospheres. Third, there must be a gas source underground. Because, on land, only the permafrost in Siberia can form and maintain a stable solid state, and the sediments 300-500 meters deep in the ocean may have such low temperature and high pressure conditions.

Is it possible that submarine storms are unnatural on the seabed? It is possible, but not now, but a long time ago.

20. How is amber formed (imagine it yourself) urgently! 1. Some insects think amber is honey, so they get stuck after eating it.

The suicidal bug wanted to find a good coffin, so he went in.

3. Insects are stuffed into jiaozi by a boring person.

4. Some insects intrude by accident.

.........

Abdominal pain is likely to be what disease, first of all, to determine what causes abdominal pain, bloating, and then symptomatic treatment, you first look at the following diseases that cause abdominal pain and bloating.

Abdominal pain and abdominal distension are common in the following diseases:

1. Acute gastroenteritis

Abdominal pain, mainly in the upper abdomen and navel, presents paroxysmal spasmodic pain, accompanied by anorexia, abdominal distension, nausea and vomiting, acute watery diarrhea, or fever, dizziness and fatigue, which are mostly caused by alcoholism, sexual life or unclean food and drugs.

2. Chronic gastritis

Abdominal distension, discomfort or pain, especially after meals, fullness, belching, noisy acid swallowing, loss of appetite, nausea, tasteless tongue, loose stool, or anemia and emaciation after meals.

3. Peptic ulcer disease

-epigastric pain is a long-term recurrent disease, which is periodic and lasts for several days, weeks or longer, and then it is relieved for a long time, especially in spring and autumn; Pain and diet have obvious correlation and rhythm. The pain of duodenal ulcer occurs between meals and can be relieved after eating. The pain of gastric ulcer often occurs within 1 hour after meals, and gradually relieves after 1 ~ 2 hours. Accompanied by increased saliva secretion, nausea, acid swelling, belching, nausea and vomiting.

4. Bacillary dysentery

—— Fever, body temperature above 38℃, nausea and vomiting, followed by paroxysmal abdominal pain and diarrhea. Abdominal pain is mainly around the navel and left lower abdomen, defecation 10 ~ 20 times, purulent bloody stool every day, small amount, and acute diarrhea. Mostly in summer and autumn, with a history of unclean diet.

5. Allergic purpura

-Purple spots on the skin, more common in lower limbs and buttocks, symmetrically distributed, appearing in batches, with different sizes, purplish red, higher than the skin; 50% patients are accompanied by abdominal distension and abdominal pain, which is located around the umbilicus and lower abdomen, and may be accompanied by nausea, vomiting and bloody stool. Wandering pain or obvious redness and swelling pain occurs in joints such as knees and ankles. It is more common in children and young people, and there is often a history of upper respiratory tract infection 1 ~ 3 weeks before onset.

6. Urinary calculi

—— Severe pain in the upper abdomen or back, waist or rib abdomen, radiating to the lower abdomen, lateral side and inner thigh, accompanied by dysuria, nausea and vomiting, sweating and collapse, lasting for several minutes to several hours, accompanied by hematuria, or urgency, frequent urination and painful urination.

7. Acute viral hepatitis

-swelling and dull pain in the right upper abdomen, palpable mass, yellow skin and sclera, yellow urine, loss of appetite, nausea and vomiting, aversion to oil, and may be accompanied by chills, fever and fatigue.

8. Chronic hepatitis

-Chronic hepatitis, more than half a year, dull pain in the right upper abdomen, swelling, tenderness, loss of appetite, fatigue, or dark skin, spider nevus, palm redness like pig liver color.

9. Chronic interstitial hepatitis

-Abdominal distension, dull pain in the right upper abdomen, presence or absence of lumps, anorexia, weight loss, fatigue and diarrhea; Nosebleeds, bleeding gums, ecchymosis and petechiae on the skin, dark complexion, spider nevus, palm redness as pig liver color; Fever, skin and sclera yellowing, abdominal wall blood vessels exposed, ascites. Most patients have a history of hepatitis for several years.

10. Chronic cholecystitis and gallstones

—— Recurrent abdominal distension and abdominal pain, accompanied by persistent dull pain and severe knife-like pain, are mostly caused or aggravated by overeating or greasy and spicy food, accompanied by symptoms such as nausea and vomiting, heartburn, belching and acid reflux. Some patients feel cystic masses in the right upper abdomen.

1 1. Chronic pancreatitis

-Puncture pain or dull pain in the upper abdomen is often severe, aggravated rapidly and lasts for a long time. Some patients can touch the mass in the left upper abdomen or umbilical region, with tenderness, accompanied by indigestion, loss of appetite, anorexia and greasy weight loss. Have a history of acute pancreatitis.

12. hysteromyoma

-female, abdominal distension and pain, some patients touch the mass, waist pain and discomfort; Shortened menstrual cycle, excessive menstrual flow, prolonged menstrual period, irregular bleeding and increased leucorrhea; Or frequent urination, constipation, poor stool, infertility.

13. Chronic pelvic inflammatory disease

-Female, abdominal distension pain, lumbosacral pain, often aggravated after fatigue, * * and before and after menstruation; Leucorrhea, menorrhagia or menstrual disorder; Sometimes there is low fever, fatigue or listlessness, general malaise and insomnia.

14. Dysmenorrhea

—— Abdominal pain and bloating before and after menstruation or during menstruation, with varying degrees of pain, lasting for 2 ~ 3 days. Sometimes accompanied by nausea, vomiting, diarrhea, dizziness and fatigue. , serious, pale, cold sweat or collapse.

15, threatened abortion

-Before the 28th week of pregnancy, there was bleeding and pain in the lower abdomen. Early abortion, first bleeding, then paroxysmal lower abdominal pain; Late abortion, abdominal pain first, abdominal pain is paroxysmal contractile pain, followed by bleeding, bleeding is not much.

16. Appendicitis

First there is pain in the upper abdomen or umbilicus, then it moves to the right lower abdomen several hours later, with obvious tenderness, sometimes touching the mass, accompanied by fever, nausea and vomiting or diarrhea.

17. Gastroptosis

-common in women, slender. Abdominal fullness is not suitable for aggravation after meals, standing more or less tired, anorexia, nausea, belching, diarrhea, constipation or diarrhea alternating with constipation, sometimes deep abdominal pain, or standing syncope, hypotension, palpitation and fatigue.

18. Chronic nonspecific colitis

-Abdominal pain is mild to moderate spasmodic pain, mostly in the left lower abdomen and left abdomen, with frequent defecation, such as sticky stool, sticky stool and bloody stool. It is aggravated by improper diet, cold, menstrual cycle or gastrointestinal infection, with varying degrees of illness and slow onset.

Abdominal distension is a common clinical symptom, which is caused by excessive gas in gastrointestinal tract. There are two phenomena: abdominal distension and abdominal gas retention. When gastrointestinal pneumatosis is excessive, patients may feel abdominal discomfort, which is manifested as belching, abdominal distension and hyperactivity of bowel sounds.

Clinically, the causes of abdominal distension can be roughly divided into the following six types:

1. Gastrointestinal diseases

(1) Gastropathy: It is common in chronic gastritis, gastric ulcer, gastroptosis, gastric dilatation and pyloric obstruction.

(2) Intestinal diseases: common in intestinal tuberculosis, dysentery, intestinal obstruction and habitual constipation.

(3) Others: gastrointestinal neurosis.

2. Acute and chronic hepatitis, liver cirrhosis, chronic cholecystitis, gallstones, pancreatitis and other hepatobiliary and pancreatic diseases.

3. Peritoneal diseases are common in acute peritonitis and tuberculous peritonitis.

4. Cardiovascular diseases are common in heart failure, mesenteric arteriosclerosis and mesenteric artery infarction. Angina pectoris and arrhythmia can also cause abdominal distension reflexively.

5. Acute infectious diseases such as septicemia, severe pneumonia and typhoid fever.

6. Others can be seen in postoperative intestinal paralysis, emphysema, asthma, hypokalemia, malabsorption syndrome, myelopathy, drug reaction, chronic pelvic inflammatory disease, adnexitis, connective tissue disease and hypothyroidism. And functional diseases, such as dyspepsia and malabsorption symptoms, gastrointestinal autonomic nerve dysfunction, etc., can all cause aggravation of pneumatosis and abdominal distension.

Does combustible ice only exist at the bottom of the sea? Natural Gas Hydrate (abbreviated as gas hydrate) is also called "combustible ice" or "solid gas" or "gas ice" because it looks like ice and can burn when it meets fire.

It is an ice-like crystalline substance distributed in deep-sea sediments or permafrost on land, which is formed by natural gas and water at high pressure and low temperature.

About 27% of the earth's land is a potential area where natural gas hydrate can be formed, and about 90% of the world's marine waters are also such potential areas. Natural gas hydrate is mainly found in the permafrost region of the Arctic and in the seabed, continental slope, land-based and trench all over the world.

So combustible ice doesn't just exist at the bottom of the sea.

Is it possible that the universe was formed by huge white holes? At present, there are no signs of "white holes" in the universe.

At present, the "white hole" only exists in the equations of physicists and mathematicians.

Who is likely to be the MVP of this year's CBA Finals? Upstairs Zhu has gradually grown from a three-point shooter to the core of a club and even the national team (although there is Yao Ming, there will definitely be great progress in the future). From the Olympic Games, we can see her spirit in the competition now, especially the rebound in the frontcourt and the key ball shooting. If Guangdong beats Xinjiang as expected, Zhu will become the number one hero, and the real MVP hopes to adopt 3Q.

Men's scrotum is always wet, which is probably the reason. Dampness of scrotum means that there is no change in the surface of scrotum skin, but there are abnormal feelings such as sweating, dampness or chills. In diet, eat more fresh fruits and vegetables, and don't eat or eat less spicy products.

Amber described in this paper may also be formed in this way. "Bear infestation attention" is to remind people to pay attention to the bears in Hokkaido, Japan, and play a warning role. Sticking it on the car is nothing more than telling others that the owner is better, be careful and stay away from the car. But there are too many posts now, and there is nothing new. The original intention of "paying attention to bears" is this: there are two kinds of symbolic animals in Hokkaido, one is an owl and the other is a bear. You can always see these two in the shops of tourist attractions and resorts all over the world. In the past, there were probably enough bears in Hokkaido, so people put up warning signs of "Bear haunt" in places where bears often haunt. Now, this warning slogan has become a trademark, with black characters on a yellow background. It has become a feature of Hokkaido in many commodities such as T-shirts and wine glasses. Now, many people are typical of Kazakhstan and Japan because they don't know this. I remember the last time a pure girl wore a T-shirt with the words "No Underwear" written on it. I sincerely suggest: Don't wear English words that you don't understand; Don't use the sign that you don't know the source! ! !

02 1-5 1589240 Shanghai number is probably a harassing call! May harass the phone, pull the black to intercept

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