Virtual currency chat currency
Publish: 2021-05-27 10:53:34
1.
1、 Different definitions:
1. virtual currency:
virtual currency refers to non real currency
digital currency:digital currency is an alternative currency in the form of electronic currency. Both digital gold coin and cryptocurrency belong to digiccy
3. Cryptocurrency:
cryptocurrency is a kind of transaction medium that uses cryptography principles to ensure transaction security and control the creation of transaction units
4. Token (token):
a kind of article whose shape and size are similar to currency, but the scope of use is limited and has no currency effect, and its token is the homonym of token in English
Second, the characteristics are different:1; It can also be said that virtual currency is personalized currency. In another way, it can also be called information currency
2. Digital currency:
is an unregulated and digital currency, which is usually issued and managed by developers and accepted and used by members of specific virtual communities
Cryptocurrency:cryptocurrency is based on the decentralized consensus mechanism, which is opposite to the banking and financial system relying on the centralized regulatory system
4. Token (token):
usually needs to be exchanged for money, used in shops, playgrounds, mass transportation and other places, as a voucher to use services and exchange goods
extended data
at present, digital currency is more like an investment proct, because it lacks a strong guarantee agency to maintain its price stability, and its role as a value measure has not yet appeared, so it can not be used as a means of payment. As an investment proct, digital currency cannot develop without trading platform, operating company and investment company
digital currency is a double-edged sword. On the one hand, the blockchain technology it relies on has been decentralized and can be used in other fields except digital currency, which is one of the reasons why bitcoin is popular; On the other hand, if digital currency is widely used by the public as a kind of currency, it will have a huge impact on the effectiveness of monetary policy, financial infrastructure, financial market and financial stability
2.
It is. You should thank your friends for telling you about the coin digging, because the birth of a new thing is always faced with questions and doubts from relatives and friends, even slander. His willingness to share this information with you shows that he regards you as a true friend. Not everyone is willing to share this information at the risk of being misunderstood or even ridiculed by relatives and friends
At present, it has become a phenomenon currency in the currency circle. First of all, you don't need to invest a cent, so there is no money cost. Second, you just need to check in every day, and the time cost is almost zero. Third, it will eventually be able to trade, so the minimum guarantee is a steady profit. These characteristics determine that it is excellent to collect even a piece of wool Fourthly, its heat. In the currency circle, heat is almost several times more important than the underlying technology in determining how much a currency can be worth. At present, there are more than 5 million coin users in more than 140 countries and regions around the world. It is the first currency that has not yet been listed on the public chain of the main network and has been replaced by many exchanges. It is also the first currency that has not yet been listed on the main network and has been targeted by various capitals for investment. Therefore, it is a phenomenon currency in the currency circleas for the background of its founder, Stanford University has two Ph.D. and one MBA. These three people are the core start-up figures, which can be found on the official website of Stanford University. Both the Stanford daily and the guardian have reported on the project, so the background team is completely authentic
for half a year old users who want to get on the car, they can chat from the simplest small problems to troubleshooting. The link to the website of the practical operation course of pinetwork
(if you can't open it, please the link to the browser's website and open it again)
send money, pinetwork, the future can be expected! The point is not to rush to sell, but to focus on whether you have enough money in hand
if you look ahead and back, you will miss the opportunity. In a word, it's over
with pie in hand and love in heart, we have a future
3. In addition to bitcoin, there are many other virtual currencies in the virtual world< Liteoin (LTC) was released on October 7, 2011, and is currently the most valuable counterfeit currency, accounting for about 2% of BTC's market value. The current unit price is US $2.31, with a total currency value of US $38 million
this is also a distributed (decentralized) digital currency. Unlike the sha256 mining algorithm used by bitcoin, LTC adopts scrypt algorithm. Scrypt algorithm uses sha256 as its subroutine, and scrypt itself needs a lot of memory. Each hash is used as the seed of the input, and then it needs a lot of memory to store another pseudo-random sequence to generate the pseudo-random points of the sequence and output the hash value. In the mining of BTC (bitcoin), it is not enough to rely on simple graphics card mining (it takes about ten to dozens of days to dig a BTC with general configuration graphics card). The emergence of various expensive mining machines has raised the threshold for ordinary people to get BTC through mining, while LTC has certain advantages in using PC graphics card mining This passage comes from Zhihu.)
compared with BTC, litecain has made a little improvement in technology. If BTC is gold now, LTC is silver for the time being
the biggest advantage of litecoin is that it can confirm the authenticity faster. The virtual currency is designed and maintained by Charles Lee. Bitcoin transactions need to be verified, and the average verification time is more than 10 minutes. Most transaction websites need 1 hour to verify. The average transaction confirmation time of liteoin is 2.5 minutes. Developers claim that shortening the verification time increases the practicability of virtual currency. The bitcoin mining efficiency of customized machine and AMD GPU is the highest, making it almost unprofitable for miners using CPU mining. Litecain's mining excludes GPUs and custom processors, so it doesn't rely too much on a small number of professional miners
ppcoin
ppcoin (PPC) was released on August 19, 2012, which has improved the original technology of BTC. Use proof of make and add the concept of coin age
ppcoin is a bifurcated project of bitcoin, which aims to achieve energy efficiency and maintain the best performance of the original bitcoin as far as possible. The unit price of ppcoin is US $0.22 and the total currency value is US $4 million
ppcoin does not have a fixed upper limit of money supply, but it does not mean that ppcoin has obvious inflation compared with bitcoin. Bitcoin can be compared to gold. The annual inflation rate of gold is about 1-3%. Although gold has no known upper limit of money supply, we still know that it is a reliable scarce commodity
ppcoin has two types of casting: work certificate and equity certificate. The coinage rate of working proof is affected by Moore's law, which depends on the doubling of our working proof ability. What we all know is that Moore's law will eventually come to an end. By then, the ppcoin of inflation may be close to the gold level. The annual maximum inflation rate of certificate of equity is 1%. At the same time, ppcoin's transaction costs were destroyed to fight inflation. So on the whole, the coin design of ppcoin is still a very low inflation design in the future, which can be comparable with bitcoin<
ppcoin's reward is similar to lottery, which will determine the winning probability according to the number of ppcoin held by miners. Sunny king, one of the founders, said that their design is based on a new concept of long-term energy efficiency
terracoin
terracoin (TRC) was released on October 26, 2012, with a total currency of 42 million. The speed of each block is 2 minutes, slightly faster than LTC. There is not much special in technology, similar to the proction of BTC halved every four years
however, the operation team seems to have a strong business background and may be better than other bitcoins in circulation. The development of virtual currency is getting more and more attention. Now some teams with business background will accelerate the development of virtual currency
namecoin
namecoin is a distributed domain name system based on bitcoin technology. Its principle is the same as bitcoin. The first release date of this open source software is April 18, 2011
namecoin is generated from an original block which is different from bitcoin's main trading block. It uses a new blockchain, which is independent of bitcoin's blockchain. Because it is based on bitcoin, the security, distribution, robustness, encryption and migration of domain names are guaranteed mathematically. You can dig bitcoin and namecoin at the same time
this project was discussed and proposed by bitdns, which is mainly dissatisfied with the defects of DNS. The only top-level domain name of namecoin is. Bit. It costs namecoin to register a. Bit domain name
in addition, Q currency, Shanda currency, starting point currency and various online game currencies are also virtual currencies.
this is also a distributed (decentralized) digital currency. Unlike the sha256 mining algorithm used by bitcoin, LTC adopts scrypt algorithm. Scrypt algorithm uses sha256 as its subroutine, and scrypt itself needs a lot of memory. Each hash is used as the seed of the input, and then it needs a lot of memory to store another pseudo-random sequence to generate the pseudo-random points of the sequence and output the hash value. In the mining of BTC (bitcoin), it is not enough to rely on simple graphics card mining (it takes about ten to dozens of days to dig a BTC with general configuration graphics card). The emergence of various expensive mining machines has raised the threshold for ordinary people to get BTC through mining, while LTC has certain advantages in using PC graphics card mining This passage comes from Zhihu.)
compared with BTC, litecain has made a little improvement in technology. If BTC is gold now, LTC is silver for the time being
the biggest advantage of litecoin is that it can confirm the authenticity faster. The virtual currency is designed and maintained by Charles Lee. Bitcoin transactions need to be verified, and the average verification time is more than 10 minutes. Most transaction websites need 1 hour to verify. The average transaction confirmation time of liteoin is 2.5 minutes. Developers claim that shortening the verification time increases the practicability of virtual currency. The bitcoin mining efficiency of customized machine and AMD GPU is the highest, making it almost unprofitable for miners using CPU mining. Litecain's mining excludes GPUs and custom processors, so it doesn't rely too much on a small number of professional miners
ppcoin
ppcoin (PPC) was released on August 19, 2012, which has improved the original technology of BTC. Use proof of make and add the concept of coin age
ppcoin is a bifurcated project of bitcoin, which aims to achieve energy efficiency and maintain the best performance of the original bitcoin as far as possible. The unit price of ppcoin is US $0.22 and the total currency value is US $4 million
ppcoin does not have a fixed upper limit of money supply, but it does not mean that ppcoin has obvious inflation compared with bitcoin. Bitcoin can be compared to gold. The annual inflation rate of gold is about 1-3%. Although gold has no known upper limit of money supply, we still know that it is a reliable scarce commodity
ppcoin has two types of casting: work certificate and equity certificate. The coinage rate of working proof is affected by Moore's law, which depends on the doubling of our working proof ability. What we all know is that Moore's law will eventually come to an end. By then, the ppcoin of inflation may be close to the gold level. The annual maximum inflation rate of certificate of equity is 1%. At the same time, ppcoin's transaction costs were destroyed to fight inflation. So on the whole, the coin design of ppcoin is still a very low inflation design in the future, which can be comparable with bitcoin<
ppcoin's reward is similar to lottery, which will determine the winning probability according to the number of ppcoin held by miners. Sunny king, one of the founders, said that their design is based on a new concept of long-term energy efficiency
terracoin
terracoin (TRC) was released on October 26, 2012, with a total currency of 42 million. The speed of each block is 2 minutes, slightly faster than LTC. There is not much special in technology, similar to the proction of BTC halved every four years
however, the operation team seems to have a strong business background and may be better than other bitcoins in circulation. The development of virtual currency is getting more and more attention. Now some teams with business background will accelerate the development of virtual currency
namecoin
namecoin is a distributed domain name system based on bitcoin technology. Its principle is the same as bitcoin. The first release date of this open source software is April 18, 2011
namecoin is generated from an original block which is different from bitcoin's main trading block. It uses a new blockchain, which is independent of bitcoin's blockchain. Because it is based on bitcoin, the security, distribution, robustness, encryption and migration of domain names are guaranteed mathematically. You can dig bitcoin and namecoin at the same time
this project was discussed and proposed by bitdns, which is mainly dissatisfied with the defects of DNS. The only top-level domain name of namecoin is. Bit. It costs namecoin to register a. Bit domain name
in addition, Q currency, Shanda currency, starting point currency and various online game currencies are also virtual currencies.
4. The mother currency is the total number of virtual coins issued by the system at the beginning. Please accept it
5. Virtual currency refers to the currency that does not exist in reality and exists in a virtual state, such as bitcoin, lightcoin, Ethereum and so on; Token refers to the form of money that can be used as a monetary function and can be used to purchase goods
virtual currency can be used for shopping transactions in certain situations, such as in some places abroad; At this time, it counts as a token and plays the role of currency
but token, such as the shopping card voucher printed by the company itself, can be used for the internal consumption of the company. To some extent, it is equivalent to token; However, it is not a virtual currency
that is to say, virtual currency may be token; But token is not necessarily a virtual currency.
virtual currency can be used for shopping transactions in certain situations, such as in some places abroad; At this time, it counts as a token and plays the role of currency
but token, such as the shopping card voucher printed by the company itself, can be used for the internal consumption of the company. To some extent, it is equivalent to token; However, it is not a virtual currency
that is to say, virtual currency may be token; But token is not necessarily a virtual currency.
6. Virtual currency is a kind of data spread on the Internet. Different from the traditional paper money, its circulation is more rapid and fast, so we can feel the pursuit of the majority of Internet users.
7. Connecting with the wallet on the first floor is equivalent to calling LTC to him. It's really bad. It's a cheat for novices
please accept if you are satisfied
please accept if you are satisfied
8. Blood donation flow chart
1,
health status survey of physical examination registration, such as nutritional development, weight, height, blood pressure, etc; Fill in the registration form of unpaid blood donors, such as: name, gender, date of birth, certificate type and number, work unit or correspondence address, etc
2, blood samples were collected from blood donors and blood samples, and blood samples were taken for rapid screening of hepatitis B surface antigen.
3. Arm cleaning before blood collection: to prevent infection and blood pollution at blood collection site
pre collection check: answer the questions of blood collection personnel, such as name, blood type, blood volume, etc
disinfect the arm: disinfect the arm with iodine tincture, deionize the arm with alcohol, and do not touch the disinfected part after disinfection
4. According to the requirements of blood collection personnel, blood collection personnel should cooperate with blood collection. After the blood collection needle enters the vein, blood donors should do the movements of loosening and clenching fist intermittently, and the blood collection process takes about 3-6 minutes
5. After compression hemostasis and blood collection, press the needle eye with three fingers for 5-10 minutes. Do not twist the cotton ball to avoid subcutaneous hematoma. Rest for 10-15 minutes before leaving, disinfection cotton ball should be maintained for more than 4 hours
the nutritional supplement after blood donation is generally appropriate to increase various nutrients necessary for hematopoiesis. Hemopoietic raw materials mainly include: protein, iron, folic acid and vitamin B12, etc
the foods with high quality protein are: milk, lean meat, eggs, bean procts, etc
the foods with more iron are: animal liver, jellyfish, shrimp, sesame, kelp, black fungus, laver, mushroom, pea, jujube, Guiyuan, etc. In addition, you can use iron pot when cooking
the foods with more folic acid are: pig liver, kidney, beef, etc
foods with more vitamin B12 include animal liver, pig or sheep kidney, sufu, etc
in a word, it is not necessary to eat anything after blood donation. As long as you eat scientifically and reasonably, with nutritional value, delicious, comfortable and appropriate amount, you can recover the lost part of blood in a short time
how to move or exercise after blood donation
do not take part in strenuous exercise or overnight entertainment activities on the day after blood donation<
is blood donation harmful to health
blood is a kind of fluid tissue, which circulates in the cardiovascular system under the promotion of the heart. It is an important part of the human body, accounting for about 7-8% of the body weight. A person with a weight of 50 kg has a total blood volume of about 3000-4000 ml. under normal circumstances, only 80% of the blood runs in the blood vessels, The other 20% of the blood is stored in the liver and spleen in case of urgent need. A normal person's blood donation or traumatic bleeding 300-400 ML will not have any impact on human health, because the rection of body blood volume will stimulate the hematopoietic function of red bone marrow. If the nutrition is appropriate after blood transfusion, the water in the blood can be supplemented in two to three days. Within one month, iron, protein, vitamins, folic acid, etc. can graally recover, and its core component hemoglobin can also return to the amount before blood donation in two to three months. Therefore, a healthy person's blood transfusion of no more than 400ml per time will not affect his health
What are the rules that citizens should abide by when donating blood
(1) the blood donation registration form should be filled in truthfully, and the past medical history should not be concealed
(2) a blood donation is generally 200 ml, not more than 400 ml at most, and the interval between two collections is not less than 6 months< (3) after the blood donation is qualified, they should participate in the blood donation according to the specified time, so as not to affect the blood use plan of the hospital
who can't donate blood for the time being< (1) tooth extraction or other minor operations within half a month< (2) three days before and after menstruation, less than six months after pregnancy and abortion, less than one year after delivery and lactation< (3) patients with cold or acute gastroenteritis less than one week, acute urinary tract infection less than one month and pneumonia less than three months< (4) some infectious diseases, such as dysentery, typhoid, brucellosis and malaria, were less than half a year, one year, two years and three years respectively< (5) transfusion of whole blood and blood components in the past five years< (6) less than half a year after major surgery, less than three months after appendectomy, hernia repair and tonsillectomy
(7) less than one week after the healing of localized inflammation, less than two weeks after the healing of extensive inflammation
who can't donate blood
(1) sexually transmitted diseases, leprosy and AIDS patients and HIV infected persons. (2) patients with hepatitis B, HBsAg positive and HCV antibody positive< (3) patients with allergic diseases and recurrent allergic episodes, such as frequent measles, bronchial asthma and drug allergy (simple measles can not be donated ring acute episode)
(4) all kinds of TB patients, such as tuberculosis, renal tuberculosis, lymphatic tuberculosis and bone tuberculosis. (5) patients with cardiovascular diseases, such as various heart diseases, hypertension, hypotension, myocarditis and thrombophlebitis< (6) patients with respiratory diseases, such as chronic bronchitis, emphysema, bronchiectasis and pulmonary insufficiency< (7) patients with digestive system and urinary system diseases, such as severe gastric and odenal ulcer, chronic gastroenteritis, acute and chronic nephritis, chronic urinary tract infection, nephrotic syndrome and chronic pancreatitis< (8) patients with hematological diseases, such as anemia, leukemia, polycythemia vera and various hemorrhagic and coagulative diseases
(9) patients with endocrine or metabolic disorders, such as pituitary and adrenal diseases, hyperthyroidism, acromegaly, diabetes insipis and diabetes. (10) patients with organic nervous system diseases or psychosis, such as encephalitis, brain trauma sequelae, epilepsy, schizophrenia, hysteria, severe neurasthenia, etc< (11) patients with parasitic diseases and endemic diseases, such as Kala Azar, schistosomiasis, filariasis, hookworm, cysticercosis, paragonimiasis, Keshan disease and Kaschin Beck disease
(12) patients with various malignant tumors and benign tumors affecting health
(13) the patients who had undergone the operation of stomach, kidney, spleen and other important internal organs< (14) patients with chronic skin diseases, especially infectious, allergic and inflammatory systemic skin diseases, such as tinea lutea, generalized eczema and systemic psoriasis< (15) patients with ophthalmic diseases, such as keratitis, iritis, optic neuritis and high myopia with funs changes< (16) autoimmune diseases and collagen diseases, such as systemic lupus erythematosus, dermatitis, scleroderma, etc
(17) drug users< (18) homosexuals and multiple sexual partners
(19) patients with other diseases considered by physical examination doctors unable to donate blood
What are the physical examination standards for blood donors< (1) age: 18-55 years old< (2) weight: Male & gt= 50kg, female & gt= 45 kg< (3) blood pressure 12-20 / 8-12 kPa (90-140 / 60-90 mmHg), pulse pressure difference & gt= 4 kPa (> 30 mmHg)< (4) pulse: 60-100 beats / min, high enrance athletes = 50 beats / min< (5) the body temperature was normal< (6) there was no skin yellowing, wound infection, large area skin disease and superficial lymph node enlargement< (7) there were no serious diseases of facial features, sclera and goiter
(8) no severe disability of limbs, no severe functional disorder and no swelling of joints< (9) chest: normal heart and lung (physiological murmur of heart can be regarded as normal)
(10) abdomen: the abdomen is flat and soft, without mass or tenderness, and the liver and spleen are not swollen.
1,
health status survey of physical examination registration, such as nutritional development, weight, height, blood pressure, etc; Fill in the registration form of unpaid blood donors, such as: name, gender, date of birth, certificate type and number, work unit or correspondence address, etc
2, blood samples were collected from blood donors and blood samples, and blood samples were taken for rapid screening of hepatitis B surface antigen.
3. Arm cleaning before blood collection: to prevent infection and blood pollution at blood collection site
pre collection check: answer the questions of blood collection personnel, such as name, blood type, blood volume, etc
disinfect the arm: disinfect the arm with iodine tincture, deionize the arm with alcohol, and do not touch the disinfected part after disinfection
4. According to the requirements of blood collection personnel, blood collection personnel should cooperate with blood collection. After the blood collection needle enters the vein, blood donors should do the movements of loosening and clenching fist intermittently, and the blood collection process takes about 3-6 minutes
5. After compression hemostasis and blood collection, press the needle eye with three fingers for 5-10 minutes. Do not twist the cotton ball to avoid subcutaneous hematoma. Rest for 10-15 minutes before leaving, disinfection cotton ball should be maintained for more than 4 hours
the nutritional supplement after blood donation is generally appropriate to increase various nutrients necessary for hematopoiesis. Hemopoietic raw materials mainly include: protein, iron, folic acid and vitamin B12, etc
the foods with high quality protein are: milk, lean meat, eggs, bean procts, etc
the foods with more iron are: animal liver, jellyfish, shrimp, sesame, kelp, black fungus, laver, mushroom, pea, jujube, Guiyuan, etc. In addition, you can use iron pot when cooking
the foods with more folic acid are: pig liver, kidney, beef, etc
foods with more vitamin B12 include animal liver, pig or sheep kidney, sufu, etc
in a word, it is not necessary to eat anything after blood donation. As long as you eat scientifically and reasonably, with nutritional value, delicious, comfortable and appropriate amount, you can recover the lost part of blood in a short time
how to move or exercise after blood donation
do not take part in strenuous exercise or overnight entertainment activities on the day after blood donation<
is blood donation harmful to health
blood is a kind of fluid tissue, which circulates in the cardiovascular system under the promotion of the heart. It is an important part of the human body, accounting for about 7-8% of the body weight. A person with a weight of 50 kg has a total blood volume of about 3000-4000 ml. under normal circumstances, only 80% of the blood runs in the blood vessels, The other 20% of the blood is stored in the liver and spleen in case of urgent need. A normal person's blood donation or traumatic bleeding 300-400 ML will not have any impact on human health, because the rection of body blood volume will stimulate the hematopoietic function of red bone marrow. If the nutrition is appropriate after blood transfusion, the water in the blood can be supplemented in two to three days. Within one month, iron, protein, vitamins, folic acid, etc. can graally recover, and its core component hemoglobin can also return to the amount before blood donation in two to three months. Therefore, a healthy person's blood transfusion of no more than 400ml per time will not affect his health
What are the rules that citizens should abide by when donating blood
(1) the blood donation registration form should be filled in truthfully, and the past medical history should not be concealed
(2) a blood donation is generally 200 ml, not more than 400 ml at most, and the interval between two collections is not less than 6 months< (3) after the blood donation is qualified, they should participate in the blood donation according to the specified time, so as not to affect the blood use plan of the hospital
who can't donate blood for the time being< (1) tooth extraction or other minor operations within half a month< (2) three days before and after menstruation, less than six months after pregnancy and abortion, less than one year after delivery and lactation< (3) patients with cold or acute gastroenteritis less than one week, acute urinary tract infection less than one month and pneumonia less than three months< (4) some infectious diseases, such as dysentery, typhoid, brucellosis and malaria, were less than half a year, one year, two years and three years respectively< (5) transfusion of whole blood and blood components in the past five years< (6) less than half a year after major surgery, less than three months after appendectomy, hernia repair and tonsillectomy
(7) less than one week after the healing of localized inflammation, less than two weeks after the healing of extensive inflammation
who can't donate blood
(1) sexually transmitted diseases, leprosy and AIDS patients and HIV infected persons. (2) patients with hepatitis B, HBsAg positive and HCV antibody positive< (3) patients with allergic diseases and recurrent allergic episodes, such as frequent measles, bronchial asthma and drug allergy (simple measles can not be donated ring acute episode)
(4) all kinds of TB patients, such as tuberculosis, renal tuberculosis, lymphatic tuberculosis and bone tuberculosis. (5) patients with cardiovascular diseases, such as various heart diseases, hypertension, hypotension, myocarditis and thrombophlebitis< (6) patients with respiratory diseases, such as chronic bronchitis, emphysema, bronchiectasis and pulmonary insufficiency< (7) patients with digestive system and urinary system diseases, such as severe gastric and odenal ulcer, chronic gastroenteritis, acute and chronic nephritis, chronic urinary tract infection, nephrotic syndrome and chronic pancreatitis< (8) patients with hematological diseases, such as anemia, leukemia, polycythemia vera and various hemorrhagic and coagulative diseases
(9) patients with endocrine or metabolic disorders, such as pituitary and adrenal diseases, hyperthyroidism, acromegaly, diabetes insipis and diabetes. (10) patients with organic nervous system diseases or psychosis, such as encephalitis, brain trauma sequelae, epilepsy, schizophrenia, hysteria, severe neurasthenia, etc< (11) patients with parasitic diseases and endemic diseases, such as Kala Azar, schistosomiasis, filariasis, hookworm, cysticercosis, paragonimiasis, Keshan disease and Kaschin Beck disease
(12) patients with various malignant tumors and benign tumors affecting health
(13) the patients who had undergone the operation of stomach, kidney, spleen and other important internal organs< (14) patients with chronic skin diseases, especially infectious, allergic and inflammatory systemic skin diseases, such as tinea lutea, generalized eczema and systemic psoriasis< (15) patients with ophthalmic diseases, such as keratitis, iritis, optic neuritis and high myopia with funs changes< (16) autoimmune diseases and collagen diseases, such as systemic lupus erythematosus, dermatitis, scleroderma, etc
(17) drug users< (18) homosexuals and multiple sexual partners
(19) patients with other diseases considered by physical examination doctors unable to donate blood
What are the physical examination standards for blood donors< (1) age: 18-55 years old< (2) weight: Male & gt= 50kg, female & gt= 45 kg< (3) blood pressure 12-20 / 8-12 kPa (90-140 / 60-90 mmHg), pulse pressure difference & gt= 4 kPa (> 30 mmHg)< (4) pulse: 60-100 beats / min, high enrance athletes = 50 beats / min< (5) the body temperature was normal< (6) there was no skin yellowing, wound infection, large area skin disease and superficial lymph node enlargement< (7) there were no serious diseases of facial features, sclera and goiter
(8) no severe disability of limbs, no severe functional disorder and no swelling of joints< (9) chest: normal heart and lung (physiological murmur of heart can be regarded as normal)
(10) abdomen: the abdomen is flat and soft, without mass or tenderness, and the liver and spleen are not swollen.
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