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if you don't understand virtual currency, don't touch it. The water of virtual currency is very deep. If you are interested, pay attention to bitcoin, Ruitai coin and vitality coin, which are the mainstream digital currencies.
[classification and alias] Leguminosae, Caragana. Its alias is Caragana korshinskii
[geographical distribution] it is distributed in Ningxia, Inner Mongolia, Shanxi and Shaanxi provinces in China. It is mainly distributed on the Loess Hilly slopes in Shanxi and Shaanxi provinces. It also grows on the high mountains with precipitation of about 300 mm and altitude of 2800 M. It was introced into Gansu Province in the 1950s and has been planted in a large area
[biological and ecological characteristics] Caragana intermedia likes light, grows poorly in shade and affects fruit setting; It is resistant to high temperature, and no damage can be seen when the ground temperature reaches 55 ℃, but sunburn can be seen in the southwest slope of high altitude area; Cold resistant, can adapt to - 32.7 ℃ cold and winter frozen soil layer up to 1.28 meters environment; It is drought resistant. It can grow normally on the loess hilly area with annual rainfall less than 350 mm, on the barren slope with 6% soil water content and on the sandy land with 2% - 3% soil water content, and can only grow sparsely on the barren mountain with annual rainfall about 250 mm; It is not resistant to water and humidity. It grows poorly in places with high groundwater level, and often causes death in places with accumulated water. The root has nole, can enre barren, suitable for loess hilly land, rocky mountain, valley terrace, sandy land, etc. The underground part is larger than the aboveground part. The life span is 70-100 years. It has strong germinating ability, can enre flat stubble, and grows faster after flat stubble
[afforestation technology] when pods change from dark red to yellowish brown, they should be harvested in time. Caragana intermedia is usually planted by direct seeding and soaked in 60 ℃ warm water for one day and night before sowing. It can be sown in spring, summer (rainy season) and autumn. Sowing on demand is suitable for steep slopes with broken topography. New species are sown 10-15 seeds per hole, old species are sown 20-25 seeds per hole, and the spacing between plants and rows is 1 meter × 1 m, 3-4 cm soil cover, 3.6-9 kg seed per hectare. It is suitable for flat ridge and barren slope with row spacing of 1.5m; 7-0.8 m in furrow, 10-15 seeds per cluster, 3.0-5.2 kg per hectare. In Inner Mongolia, the planting method is usually adopted, with two rows of one columbine, two or three columbines in the belt, and the belt spacing is 3-5 meters
[economic value] Caragana intermedia can be used as civil fuel and retting green manure, which is a high-quality feed for livestock. The branches are firm and flexible, and can weave baskets and back buckets. Leather is rich in fiber, which is the raw material of rope and bag making. The branch can make paper. Oil is extracted from seeds. It has a long flowering period and is a good nectar source plant
The Internet "compares" the two symbols of human civilization - words and money, but the right is still unclear and vulnerable. Information exchange and wealth circulation still rely heavily on centralized organizations, such as credit extension and credit reference services
the underlying logic of blockchain is to store information in a common competitive accounting mode. Each page of encrypted account book is equivalent to a "block", and the transaction audit results are covered with tamperable time stamps and stored throughout the network. This "distributed general ledger technology" brings the ownership of rights and interests and the mutual trust of strangers, and brings the dawn for the free transaction of assets
as the underlying technology of bitcoin, why can blockchain become the most popular financial technology? As of June 18, a bitcoin is about 18750 yuan, and the total market value of global digital assets has exceeded 110 billion US dollars. There are 4321 kinds of digital assets, and there are more than 40 kinds of digital currencies with a market value of 100 million US dollars; Then, the free circulation between currencies, between chains, between digital currencies and legal currencies, and between physical assets and bit assets has become a huge pain point. How can we build a bridge from the atomic world to the bit world? What kind of sparks will the combination of artificial intelligence (AI), which is as hot as blockchain, proce? This paper tries to make a solution
first, the blockchain instry is in full swing, and the "comparative advantage" of domestic entrepreneurs is highlighted
blockchain was proposed by the foundational paper bitcoin: a peer-to-peer e-cash system published by zhongbencong in 2008, and bitcoin is the reward that zhongbencong created to reward participants for competitive bookkeeping, Mainly through the proof of work (POW) to "mine" and get the bonus. The "mining" is a process of competing the ability of consensus algorithm, which requires huge energy consumption. It is worth mentioning that at present, the four big bitcoin "mines" in the world are mainly concentrated in Southwest China and Inner Mongolia
in the public chain, any node is open, everyone can participate in the calculation of the blockchain, and can download and obtain the complete blockchain data (all accounts). With the improvement of the security level of the blockchain itself, many nodes in the private chain have access rights, and only specific licensed nodes can be publicly accessed
the emergence of "smart contract" is to solve the problem of converting the legal currency protocol into the protocol in the bit world. Smart contract can accelerate the real currency to become "programmable currency" in the blockchain. How to connect the legal currency and digital currency, and then connect the atomic world and the bit world, and promote the interaction and application of assets between the two worlds? It needs to be solved by "Bi Yuan chain"
"Bi Yuan chain" is built by Babbitt, the largest developer community in the domestic blockchain instry. Compared with other single asset blockchains, the "better than the original" blockchain interaction protocol is more suitable for complex interaction and interoperability of multiple bit assets, such as digital currency, usufruct, unlisted equity, creditor's rights, etc., based on smart contracts
China has the largest amount of investment in financial technology in the world, and blockchain is a parallel track with mobile payment, insurance, etc. bat has laid out blockchain in recent two years, network has reached strategic cooperation with circle (cross border payment), Alibaba and Ethereum have cooperated to develop financial cloud, Tencent's Micro bank has done alliance chain cloud service based on Tencent cloud, etc. By the end of April 2017, there were 455 blockchain companies in the world with a total financing amount of US $1.947 billion, and 61 domestic blockchain entrepreneurs financing companies
the mainstream workload proof mechanism (POW) in the blockchain is criticized for its narrow application range of "hash" calculation, resulting in a great waste of mining machinery and energy; Compared with the original chain, matrix operation and convolution operation are introced in the hashing process of mining, which makes the mining machine more friendly to artificial intelligence ASIC. The prosperity of mining machinery market in the blockchain has stimulated the supply chain of AI companies to ASIC chips, and the eliminated or idle "mining machinery" can also be applied to AI acceleration
conclusion:
although blockchain "burns brain", it does not affect the exploration passion of developers. This is not only the interest demand of bitcoin, but also the desire to truly return to the "value Internet" of freedom, openness and cooperation. Just as don Tapscott, the father of digital economy, compares blockchain technology to "Aladdin's magic lamp" that opens up a well-off society for human beings, with the birth of the public chain platform that opens up all kinds of currencies, chain areas and traditional financial asset transactions, multi asset biting is graally becoming a reality, and can provide artificial intelligence with open big data, controllable intelligent contracts and mining machinery acceleration, The era of currency and free assets predicted by Hayek, as well as the future convenience for people to invest and trade assets, must be based on the win-win and mutual promotion of artificial intelligence and blockchain technology
Author: Li Xing, reliable a Xing, science and technology columnist
centipede is a terrestrial arthropod, its body is composed of many segments, and each segment has a walking foot, so it is a multi legged creature. Centipede is also called Tianlong, Baijiao insect and Shaoji centipede. There are three kinds of common centipedes: red head, green head and black head. The back of the red head is red black, the abdomen is light red, and the feet are light orange or yellow. The back and feet of Qingtou are blue, and the abdomen is light blue. It is small and about half the length of Hongtou centipede. Black headed centipede has black back and feet, light yellow abdomen and smaller body. The red headed centipede is the best of the three species. It has large size, high yield, docile temperament, strong adaptability and fast growth. Generally, it is more common in rural areas. It is often located in damp corners, under bricks, under rotten leaves, and in dilapidated and damp houses. It is more common in summer. Centipede is a carnivorous animal with a wide range of recipes, especially like to prey on various insects. The first pair of feet of centipede is like a pair of pincers. There are poison glands in it to secrete poison. It can be used for medicine. It is suitable for artificial breeding
centipede (centipede) is a long flat arthropod carnivore with a pair of feet in each segment. Since the Silurian period, 2800 species have survived. Like arthropods, they are known for their many arthropods
centipede is an arthropod. They like to live in damp and dark places. Artificial breeding mostly simulates the natural environment, and makes it inhabit under the gap of rotten wood and stone and on the barren and wet grass ground. Distributed in Jiangsu, Zhejiang, Anhui, Henan, Hubei, Hunan, Guangdong, Guangxi, Shaanxi, Sichuan and other places. It is mainly proced in Jingzhou, Yichang, Xiaogan, Yunyang and some counties of Laohekou, Xiangfan, Jingmen and Zaoyang in Hubei Province. The annual purchase volume of the whole province accounts for more than 80% of the whole country, and the procts are sold and exported to the whole country; Zhejiang, Jiangsu, Anhui, Henan and Hunan also have a small number of acquisitions, most of which are self-proced and self sold. In the 1970s, Zhejiang began to raise artificially, but the problems of diseases, natural enemies, food and so on have not been completely solved, and the progress is slow. By catching wild centipedes for medicine, the supply is tight
centipede is flat and long, 9-17 cm long and 0.5-1 cm wide. The whole is composed of 22 links, and the last section is slightly small. The head is dark red with 1 pair of antennae and 1 pair of poisonous hooks; The back is brown green or dark green, glossy, with 2 longitudinal edges; Abdomen pale yellow or brown yellow, wrinkled; From the second segment, each segment has a pair of feet, which are yellow or reddish brown and hook shaped. It is brittle with cracks in the section. The smell is slightly fishy, with a special pungent odor, pungent and slightly salty. The best quality is dry body, complete length, red head and green body
centipede is a commonly used medicinal material, which is warm in nature, pungent in taste and toxic. It has the functions of relieving wind and spasm, attacking poison and dispersing knot, dredging collaterals and relieving pain. It is used for infantile convulsion, convulsion, stroke, mouth and eye deviation, hemiplegia, tetanus, rheumatism, sore, scrofula and snake bite
Centipede's feet are hook shaped and sharp, with a poisonous glanlar mouth at the end of the hook, commonly known as poisonous claw and poisonous tooth, which can discharge venom. After being bitten by a centipede, its venom glands secrete a large amount of venom, which is injected into the skin of the bitten person along the mouth of the venom glands, causing poisoning. The toxin is not strong, and it will cause pain but not fatal after being stung< There are only 21 pairs of walking feet and 1 pair of jaw feet in the medicinal centipede“ Qianchuanzi is a close relative of centipede. It has only 15 pairs of walking feet and 1 pair of jaw feet“ The stone centipede has only 15 pairs of feet. There are also some centipedes with many and short feet, 35 pairs and 45 pairs, and the most is 191 pairs, so they are commonly known as hundred feet< The digestive system consists of digestive tract and digestive gland. Food from the mouth into the digestive tract, through mechanical action and chemical decomposition process, can be absorbed and used by centipede. The digestive tract is simple, from mouth to anus is a straight pipe running through the center of the body, behind the mouth is the expanded pharynx, its contraction is concive to sucking food. The retropharyngeal digestive tract consists of foregut, midgut and hindgut. The foregut and hindgut are very short, but the midgut is very long. Foregut mainly plays the role of receiving, transporting and digesting food. The midgut is the main place for food digestion and absorption, and the hindgut is responsible for the formation of feces and the excretion of feces to the caudal segment. The digestive gland is a pair of grape shaped salivary glands, which are opened in the foregut through the salivary tube. The salivary gland can secrete saliva containing digestive enzymes, which can moisten and preliminarily decompose food
centipedes breathe through the trachea. The trachea is an elastic tubular structure formed by invagination of the body wall. There are chitin spiral filaments on the wall, which can support the trachea to facilitate gas flow. The trachea has many branches, which are distributed between cells and tissues in the body wall. There are six pairs of stomata in the centipede, which are in the 4th, 6th, 9th, 13th and 16th segments respectively. The other segments are degenerated and only a little trace is left. The valve can be opened and closed by the relevant opening device. When the valve is opened, the gas flow in and out is unobstructed. When it is closed, the water evaporation in the body and the invasion of foreign substances can be prevented
the Centipede's circulatory system is an open tube type, but it is relatively developed. The tubular heart runs through the trunk at the back of the digestive canal and is surrounded by pericardium. It enters the cephalic artery from back to front and leads to various organs of the head. In addition to the anterograde dorsal vessels, there is a pair of lateral arteries surrounding the digestive canal and converging into supraneural vessels on the ventral surface of the digestive canal. These vessels have branches into the blood cavity. In addition, in addition to the terminal segments, each segment of centipede has a pair of cardiac foramen, which is the opening for blood to enter the heart from the blood sinus
the excretory trachea of centipede is Malpighian tube. It is a non branching blind tube at the junction of midgut and hindgut. The blind end of the Malpighian canal is free in the blood cavity, and the waste proced by metabolism is absorbed from the blood and sent to the hindgut. After the hindgut reabsorbs water, it is discharged from the body through the anus and feces
the nervous system of centipede is similar to that of earthworm. There are two nerves connected to the inferior esophageal ganglion. The inferior esophageal ganglion has nerves connected to the maxilla, two pairs of mandibles and the jaw foot. After that, there are two posterior ventral nerve cords and a pair of ganglia in each segment. With the healing of somites, ganglia also heal, and each pair of ganglia send nerves to each somite to regulate the body's activities
centipede is dioecious. The gonads of the reproctive system of centipede are located at the back of the digestive tract, which is a single ovary or testis. It consists of one reproctive tube, namely fallopian tube or vas deferens. Later, it is divided into two, which go down around the digestive tract and open in the male and female reproctive foramen respectively. In addition, there are two pairs of accessory gonads which pass through the end of the reproctive tube. The female centipede has two seminal vesicles, and the male centipede has two seminal vesicles, which all lead to the end of the ovict and vas deferens. The female centipede fills the body cavity when the egg is mature. The mother before parturition stores sperm in the seminal vesicle, so that the fully developed egg can combine with the sperm when ovulating and become a fertilized egg
centipede is a kind of hermaphroditic animal. The identification of male and female is of great significance for the reasonable matching of male and female, recing the cost of raising male centipede and improving the reproctive rate. The male and female identification of centipede is complex, which can only be determined by comprehensive analysis of head, body shape and physique. The head is flat and large, the back edge of the 21th dorsal plate is flat and round, the body is large and wide, the abdomen is thick, and the body is soft; The head is oval in shape, the posterior edge of the 21th dorsal plate is slightly raised and pointed, the body is small and narrow, the abdomen is thin and the body is hard, and there is one pair of degenerated reproctive limbs in the tail reproctive area
in stressed closed syllables, the vowel letter e usually pronounces a short vowel / &/ When pronouncing, the tip of the tongue is close to the lower teeth, the front part of the tongue is raised, the tongue position is moderate, does not touch the upper jaw, has no friction, the gums are between half closed and half open, and the lip shape is flat. This sound appears at the beginning and end of the word, but rarely at the end of the word, such as:
egg
well
Red
pen
hen hen hen net
bed
bell
I hope I can help you.
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