Abstract: Provided are an LED chip and a light emitting device, which include a light emitting epitaxial layer, a first insulating layer covering the light emitting epitaxial layer, and a first pad and a second pad located on the first insulating layer. Each of the first pad and the second pad includes a stress buffer layer, a nickel metal layer, and a protective layer. The stress buffer layer includes aluminum metal layers; and by adjusting the thickness distribution of the aluminum metal layers, an aluminum metal layer closest to the nickel metal layer is set to be the thickest, and the aluminum metal layers are thickened, especially the thickness of the aluminum metal layer closest to the nickel metal layer is greater than or equal to the thickness of the nickel metal layer, therefore, the ductility and tensile property of aluminum metal are utilized to play a role in stress buffering.

Abstract: The present disclosure discloses a waterborne epoxy resin for an anti-corrosion coating, and a preparation method and use thereof. In the preparation method, a strongly-hydrophilic polyethylene glycol (PEG) branch is introduced into a molecular chain of epoxy resin to realize the self-emulsification function of epoxy resin. Moreover, due to the short molecular chain, a solid content can reach up to 66.7% under the action of PEG. In addition, the waterborne emulsion can be prepared without adding any additional alcohol-soluble solvents and other high-boiling-point organic solvents, and a production process and a product use process both are very environmentally friendly. The waterborne epoxy resin can be mixed with a waterborne ammonia curing agent to form a film for corrosion protection.

Abstract: A high-temperature gas-cooled reactor steam generating system comprises a plurality of nuclear steam supply systems, a high-pressure cylinder (21), a low-pressure cylinder (22), a condenser (23), a condensate pump (24), a low-pressure heater (25), a deaerator (26), a water supply pump (27), and a high-pressure heater (28) which are sequentially connected end to end to form a close steam loop. On one hand, the inherent safety of the reactor is guaranteed and the generating system is simplified with the inherent safety. On the other hand, the scale economy of the steam engine system and other systems of a whole power station is guaranteed through batch copy, a shared auxiliary system and a scale effect.

Abstract: A high-temperature gas-cooled reactor steam generating system comprises a plurality of nuclear steam supply systems, a high-pressure cylinder (21), a low-pressure cylinder (22), a condenser (23), a condensate pump (24), a low-pressure heater (25), a deaerator (26), a water supply pump (27), and a high-pressure heater (28) which are sequentially connected end to end to form a close steam loop. On one hand, the inherent safety of the reactor is guaranteed and the generating system is simplified with the inherent safety. On the other hand, the scale economy of the steam engine system and other systems of a whole power station is guaranteed through batch copy, a shared auxiliary system and a scale effect.

Abstract: A functional material is proposed in which by developing colors, the degree of volatilization of a volatile agent can be visually checked, and the color is stabilized. A volatile agent having desensitizing property, a coloring agent, a developer and an embedding material are mixed while heating and melting, and retained on a carrier.

Abstract: A functional material is proposed in which by developing colors, the degree of volatilization of a volatile agent can be visually checked, and the color is stabilized. A volatile agent having desensitizing property, a coloring agent, a developer and an embedding material are mixed while heating and melting, and retained on a carrier.