摘要:
The present application provides an application method, system, medium and device of digital assets based on digital product. This method includes: receiving a request from a requester for the display of a digital asset; sending a first identity authentication instruction to the owner of the digital asset according to the display request; receiving a first identity verification instruction sent by the owner of the digital asset according to the first identity authentication instruction; displaying the digital asset to the requester according to the first identity verification instruction, and recording the display of the digital asset to the requester on a transaction block of the blockchain platform. The application can not only improve the security performance of the transaction, but also improve the user experience.
摘要:
The present invention provides a flow duct type jet reactor and a process for preparing isocyanates using it. The flow duct type jet reactor situates flow ducts in inner feed pipe which form whirlpool and reinforce vortex, thereby amine steam rapidly admixes and reacts with phosgene, and the byproducts are reduced. In addition, the present process uses a jet-absorption apparatus which rapidly cools the high temperature gas discharged from the reactor to a temperature at which the product is thermally stable, and at the same time provides negative pressure for the reaction process of the system, and thus saving bulky vacuum system.
摘要:
A metal optical grayscale mask includes a layer of metal film which is deposited on transparent substrate, and different transparency pattern which is formed by laser writing on the surface of the metal film. The pattern is continuous, in type of array or random pattern. The grayscale is within 3.0 OD-0.05 OD. The thickness of the metal film is 5-100 nm. A manufacturing method of the metal optical grayscale mask includes that the selected transparent substrate is rinsed by the general semiconductor rinse process, the metal film is deposited on the transparent substrate then different transparency pattern is formed by laser writing on the surface of the metal film. The pattern is continuous, in type of array or the random pattern. The grayscale mask is low in price, antistatic electricity performance is good, the resolution can surpass optical diffraction limit. The manufacturing method is simple. There is a wide band application for micro-optical components and large-scale production of micro-electro-mechanical systems.
摘要:
The present invention provides a flow duct type jet reactor and a process for preparing isocyanates using it. The flow duct type jet reactor situates flow ducts in inner feed pipe which form whirlpool and reinforce vortex, thereby amine steam rapidly admixes and reacts with phosgene, and the byproducts are reduced. In addition, the present process uses a jet-absorption apparatus which rapidly cools the high temperature gas discharged from the reactor to a temperature at which the product is thermally stable, and at the same time provides negative pressure for the reaction process of the system, and thus saving bulky vacuum system.
摘要:
An absorbable blood vessel stent (100) has a near end and a far end. A tubular patterned structure is formed between the near end and the far end. The patterned structure comprises a plurality of support bars and connection bars (2, 3). The support bar or the connection bar (2, 3) comprises a straight line section, a U-shaped section, or an S-shaped section, and at least one through groove or through hole (5, 6) is provided on at least one support bar. Because of the special structure of the blood vessel stent (100), the performance of an iron blood vessel stent can be improved, and blood vessel stents made of other absorbable materials can be decomposed more rapidly.
摘要:
An absorbable blood vessel stent (100) has a near end and a far end. A tubular patterned structure is formed between the near end and the far end. The patterned structure comprises a plurality of support bars and connection bars (2, 3). The support bar or the connection bar (2, 3) comprises a straight line section, a U-shaped section, or an S-shaped section, and at least one through groove or through hole (5, 6) is provided on at least one support bar. Because of the special structure of the blood vessel stent (100), the performance of an iron blood vessel stent can be improved, and blood vessel stents made of other absorbable materials can be decomposed more rapidly.
摘要:
A metal optical grayscale mask includes a layer of metal film which is deposited on transparent substrate, and different transparency pattern which is formed by laser writing on the surface of the metal film. The pattern is continuous, in type of array or random pattern. The grayscale is within 3.0 OD-0.05 OD. The thickness of the metal film is 5-100 nm. A manufacturing method of the metal optical grayscale mask includes that the selected transparent substrate is rinsed by the general semiconductor rinse process, the metal film is deposited on the transparent substrate then different transparency pattern is formed by laser writing on the surface of the metal film. The pattern is continuous, in type of array or the random pattern. The grayscale mask is low in price, antistatic electricity performance is good, the resolution can surpass optical diffraction limit. The manufacturing method is simple. There is a wide band application for micro-optical components and large-scale production of micro-electro-mechanical systems.