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Blockchain and garbage classification
Publish: 2021-03-24 03:52:02
1. bitcoin is a kind of virtual digital currency proposed by Nakamoto in 2009. It is characterized by no centralized issuing institution and a fixed total of 21 million pieces. It is not a one-time issue and needs to be proced by miners. Due to the decentralized structure, trust needs to rely on cryptography and consensus mechanism technology to achieve
blockchain is a general technology derived from bitcoin. It implements a decentralized database model. Bitcoin can be called blockchain 1.0 because it has no concept of smart contract. The key technologies of blockchain include cryptography encryption and decryption and consensus mechanism. Blockchain is generally used to combine with specific business logic, which needs to rely on smart contract, which provides an execution mode free from human interference
the IPO of ICO originates from the concept of initial public offering (IPO) in the stock market. It is the behavior of blockchain project to issue token for the first time, raise bitcoin and solve Ethereum and other common digital currencies.
blockchain is a general technology derived from bitcoin. It implements a decentralized database model. Bitcoin can be called blockchain 1.0 because it has no concept of smart contract. The key technologies of blockchain include cryptography encryption and decryption and consensus mechanism. Blockchain is generally used to combine with specific business logic, which needs to rely on smart contract, which provides an execution mode free from human interference
the IPO of ICO originates from the concept of initial public offering (IPO) in the stock market. It is the behavior of blockchain project to issue token for the first time, raise bitcoin and solve Ethereum and other common digital currencies.
2. It seems that it is in Changsha County. Now Changsha blockchain is quite popular. A SMIC blockchain has been built in Changsha Information Instry Park, which is aimed at enterprises to collect on the chain. When the time comes, transactions, declaration and loans are all blockchain + mode.
3. Garbage classification refers to a series of activities, such as classified storage, classified delivery and classified handling of garbage according to certain regulations or standards, so as to transform it into public resources. The purpose of classification is to improve the resource value and economic value of garbage, strive to make the best use of materials, rece the amount of garbage treatment and treatment equipment, rece the cost of treatment, and rece the consumption of land resources, which has social, economic, ecological and other benefits
in the stage of classified storage, garbage belongs to the private goods of the public. After classified by the public, garbage becomes the regional quasi public resources of the community where the public is located. After classified and transported to the garbage concentration point or transfer station, garbage becomes the non exclusive public resources. From the domestic and foreign cities of domestic waste classification methods, most of them are based on the composition of waste, proction, combined with local waste resource utilization and treatment methods<
the advantages of waste classification treatment are as follows:
rece land erosion
some substances in domestic waste are not easy to degrade, causing serious land erosion. Waste classification, remove recyclable, non degradable substances, rece the amount of waste by more than 60%<
rece pollution
China's waste disposal mostly adopts sanitary landfill or even simple landfill, occupying more than ten thousand mu of land; In addition, insects and flies fly around, sewage overflows and stinks, which seriously pollute the environment
waste plastics in soil will rece crop yield; The discarded waste plastics are eaten by animals, which leads to the death of animals from time to time. So recycling can also rece harm< Every year, China uses 4 billion plastic fast food boxes, 500-700 million instant noodle bowls and billions of disposable chopsticks, which account for 8-15% of domestic waste. One ton of waste plastics can be recycled to 600 kg of diesel oil. By recycling 1500 tons of waste paper, it can be avoided to cut down trees used to proce 1200 tons of paper. A ton of easy open can can be melted into a ton of good aluminum block, and 20 tons less aluminum ore can be mined. 30% ~ 40% of the domestic waste can be recycled, so we should cherish this resource with small cost and large profit. You can also use the can to make pen box, which is not only environmental protection, but also saving resources
in addition, other substances in garbage can also be transformed into resources, such as food, plants and fabrics, which can be composted to proce organic fertilizer; Waste incineration can generate electricity, heat or refrigeration; Brick and tile, lime soil can be processed into building materials and so on. If we can fully tap the potential resources contained in the recycling of domestic waste. It can be seen that the best way to solve the waste problem is to recycle the waste generated in the consumption link if it is classified in time
summary
the benefits of waste classification are obvious. After sorting, the waste is sent to factories instead of landfills, which not only saves land, but also avoids the pollution caused by landfill or incineration, and can turn waste into treasure. In this battle between man and rubbish, people turn rubbish from enemy to friend
therefore, waste sorting collection can rece the amount of waste treatment and treatment equipment, rece the cost of treatment, rece the consumption of land resources, and has social, economic and ecological benefits.
in the stage of classified storage, garbage belongs to the private goods of the public. After classified by the public, garbage becomes the regional quasi public resources of the community where the public is located. After classified and transported to the garbage concentration point or transfer station, garbage becomes the non exclusive public resources. From the domestic and foreign cities of domestic waste classification methods, most of them are based on the composition of waste, proction, combined with local waste resource utilization and treatment methods<
the advantages of waste classification treatment are as follows:
rece land erosion
some substances in domestic waste are not easy to degrade, causing serious land erosion. Waste classification, remove recyclable, non degradable substances, rece the amount of waste by more than 60%<
rece pollution
China's waste disposal mostly adopts sanitary landfill or even simple landfill, occupying more than ten thousand mu of land; In addition, insects and flies fly around, sewage overflows and stinks, which seriously pollute the environment
waste plastics in soil will rece crop yield; The discarded waste plastics are eaten by animals, which leads to the death of animals from time to time. So recycling can also rece harm< Every year, China uses 4 billion plastic fast food boxes, 500-700 million instant noodle bowls and billions of disposable chopsticks, which account for 8-15% of domestic waste. One ton of waste plastics can be recycled to 600 kg of diesel oil. By recycling 1500 tons of waste paper, it can be avoided to cut down trees used to proce 1200 tons of paper. A ton of easy open can can be melted into a ton of good aluminum block, and 20 tons less aluminum ore can be mined. 30% ~ 40% of the domestic waste can be recycled, so we should cherish this resource with small cost and large profit. You can also use the can to make pen box, which is not only environmental protection, but also saving resources
in addition, other substances in garbage can also be transformed into resources, such as food, plants and fabrics, which can be composted to proce organic fertilizer; Waste incineration can generate electricity, heat or refrigeration; Brick and tile, lime soil can be processed into building materials and so on. If we can fully tap the potential resources contained in the recycling of domestic waste. It can be seen that the best way to solve the waste problem is to recycle the waste generated in the consumption link if it is classified in time
summary
the benefits of waste classification are obvious. After sorting, the waste is sent to factories instead of landfills, which not only saves land, but also avoids the pollution caused by landfill or incineration, and can turn waste into treasure. In this battle between man and rubbish, people turn rubbish from enemy to friend
therefore, waste sorting collection can rece the amount of waste treatment and treatment equipment, rece the cost of treatment, rece the consumption of land resources, and has social, economic and ecological benefits.
4.
Garbage classification (English Name: garbage classification) generally refers to a series of activities of garbage classified storage, classified delivery and classified transportation according to certain regulations or standards, so as to transform into public resources. The purpose of classification is to improve the resource value and economic value of garbage, and strive to make the best use of it
in the stage of classified storage, garbage belongs to the private goods of the public. After classified by the public, garbage becomes the regional quasi public resource of the community where the public is located. After classified and transported to the garbage concentration point or transfer station, garbage becomes the public resource without exclusion. From the domestic and foreign cities of domestic waste classification methods, generally according to the composition of waste, proction, combined with local waste resource utilization and treatment methods to classify
garbage sorting collection can rece the amount of garbage treatment and treatment equipment, rece the cost of treatment, rece the consumption of land resources, and has social, economic, ecological and other benefits
from May 1, 2020, the regulations of Beijing Municipality on the management of domestic waste will be implemented
5. Hello, landlord, it's legal. EP environmental volunteers aim to promote the nationwide learning of waste classification and make great contributions to environmental protection!
6. The difference between code chain and blockchain:
blockchain originates from the underlying technology of bitcoin and is the blockchain technology of Internet. IP is connected by blockchain technology to form distributed accounting. It is not easy to tamper with and decentralize
code chain technology is the code chain technology of the Internet of things, which superimposes the Internet of things IDS one by one in a two-dimensional way to form personal records. The application of "code chain" technology will bring more efficient link forms of "people to people", "people to things" and "things to things"
Introction to code chain:
"code chain" refers to a "two-dimensional code chain" formed by using a smart phone to aim at the "two-dimensional code" and "scan", that is, to "generate a new two-dimensional code containing the scanner's DNA" and access to the "service". The whole process can be traced, supervised and managed
"code chain technology" is the most widely used two-dimensional code "scan" payment technology
code chain technology can realize more efficient link form of people to people, people to things and things to things
Introction to blockchain:
blockchain is an important concept of bitcoin. Blockchain is a series of data blocks generated by cryptography. Each data block contains the information of a bitcoin network transaction, which is used to verify the validity of the information (anti-counterfeiting) and generate the next block
in a narrow sense, blockchain is a kind of chain data structure that combines data blocks in chronological order in a sequential way, and it can not be tampered with and forged by cryptography
broadly speaking, blockchain technology is a new distributed infrastructure and computing paradigm, which uses blockchain data structure to verify and store data, uses distributed node consensus algorithm to generate and update data, uses cryptography to ensure the security of data transmission and access, and uses intelligent contract composed of automated script code to program and operate data
the difference between code chain digital currency and blockchain digital currency:
the difference between "code chain digital currency" based on code chain technology and the existing blockchain digital currency is that "code chain digital currency" is based on the control of property rights, and uses "intelligent two-dimensional code" as the medium to transform the contracts of various instry chains into divisible, tradable, transferable, exchangeable Traceable "smart contract" and real right exchange within the code chain alliance. In the code chain monetary system, "intelligent two-dimensional code" means "SGR". That is to say, each commodity corresponds to a "smart QR code", and this "QR code" represents the "special reference property" of the commodity. Through special reference to the exchange of property rights, the exchange of goods (barter) can be realized. This two-dimensional code, which represents "special mention of property rights", can be used as the carrier and payment means of digital currency at the same time, and payment can be completed through "two-dimensional code scanning".
blockchain originates from the underlying technology of bitcoin and is the blockchain technology of Internet. IP is connected by blockchain technology to form distributed accounting. It is not easy to tamper with and decentralize
code chain technology is the code chain technology of the Internet of things, which superimposes the Internet of things IDS one by one in a two-dimensional way to form personal records. The application of "code chain" technology will bring more efficient link forms of "people to people", "people to things" and "things to things"
Introction to code chain:
"code chain" refers to a "two-dimensional code chain" formed by using a smart phone to aim at the "two-dimensional code" and "scan", that is, to "generate a new two-dimensional code containing the scanner's DNA" and access to the "service". The whole process can be traced, supervised and managed
"code chain technology" is the most widely used two-dimensional code "scan" payment technology
code chain technology can realize more efficient link form of people to people, people to things and things to things
Introction to blockchain:
blockchain is an important concept of bitcoin. Blockchain is a series of data blocks generated by cryptography. Each data block contains the information of a bitcoin network transaction, which is used to verify the validity of the information (anti-counterfeiting) and generate the next block
in a narrow sense, blockchain is a kind of chain data structure that combines data blocks in chronological order in a sequential way, and it can not be tampered with and forged by cryptography
broadly speaking, blockchain technology is a new distributed infrastructure and computing paradigm, which uses blockchain data structure to verify and store data, uses distributed node consensus algorithm to generate and update data, uses cryptography to ensure the security of data transmission and access, and uses intelligent contract composed of automated script code to program and operate data
the difference between code chain digital currency and blockchain digital currency:
the difference between "code chain digital currency" based on code chain technology and the existing blockchain digital currency is that "code chain digital currency" is based on the control of property rights, and uses "intelligent two-dimensional code" as the medium to transform the contracts of various instry chains into divisible, tradable, transferable, exchangeable Traceable "smart contract" and real right exchange within the code chain alliance. In the code chain monetary system, "intelligent two-dimensional code" means "SGR". That is to say, each commodity corresponds to a "smart QR code", and this "QR code" represents the "special reference property" of the commodity. Through special reference to the exchange of property rights, the exchange of goods (barter) can be realized. This two-dimensional code, which represents "special mention of property rights", can be used as the carrier and payment means of digital currency at the same time, and payment can be completed through "two-dimensional code scanning".
7. To be exact, blockchain and traditional server cannot be compared together, because blockchain is a technical model, while server is a kind of hardware resource
but if we have to compare them, we can first see the differences or connections between the two characteristics
the traditional server is centralized
take a look at the figure below, it is a typical centralized network, the most central is the server, the others are clients, the server is responsible for providing services to all clients, and the client obtains services from the server, such as downloading files.
but if we have to compare them, we can first see the differences or connections between the two characteristics
the traditional server is centralized
take a look at the figure below, it is a typical centralized network, the most central is the server, the others are clients, the server is responsible for providing services to all clients, and the client obtains services from the server, such as downloading files.
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