Abstract: The present disclosure provides a solar reflecting film and a preparation method thereof. The solar reflecting film includes a substrate and a functional layer stacked on each other. The functional layer includes a first reflecting layer, a barrier layer, and a second reflecting layer stacked on the substrate in order. The barrier layer includes a first barrier layer and a second barrier layer stacked on the first barrier layer. The first barrier layer is metal fluoride, inorganic non-metallic oxide, metal oxide or a combination thereof. The second barrier layer is metal oxides, metal nitrides, semiconductor doped compounds or a combination thereof. And a material of the first barrier layer is at least partially different from that of the second barrier layer.

Abstract: A radiative cooling film and a product thereof are provided. The radiative cooling film includes a carrier layer, a reflective layer and an emissive layer stacked together. A light shines on the radiative cooling film from the emissive layer. The emissive layer includes a polymer containing a C—F bond. The carrier layer includes a polymer containing at least one of a C—C bond and a C—O bond. After disposing at 120 degrees centigrade for 30 minutes, a transverse direction heat-shrinkage rate of the carrier layer is less than or equal to 2%, and a machine direction heat-shrinkage rate of the carrier layer is less than or equal to 3%. A thickness of the radiative cooling film is in a range of 50 ?m to 170 ?m, and a thickness of the emissive layer accounts for 20% to 90% of the thickness of the radiative cooling film.

Abstract: A main stream reservoir ecological modulation method considering incoming water from interval tributaries is provided. The method determines the contribution ratio of the incoming water from interval tributaries to first-day's water rising in a high-flow surge process and when to start ecological modulations of spawning ground sections, determines a river course routing method after a main stream and its tributaries joining and calibrating parameters, based on past hydrological data, performing river flow calculation on the discharge volume of upstream reservoirs and the flow after interval tributaries joining, and determines a main stream reservoir ecological modulation mode considering incoming water from interval tributaries.

Abstract: A radiative cooling film and a product thereof are provided. The radiative cooling film includes a carrier layer, a reflective layer and an emissive layer stacked together. A light shines on the radiative cooling film from the emissive layer. The emissive layer includes a polymer containing a C—F bond. The carrier layer includes a polymer containing at least one of a C—C bond and a C—O bond. After disposing at 120 degrees centigrade for 30 minutes, a transverse direction heat-shrinkage rate of the carrier layer is less than or equal to 2%, and a machine direction heat-shrinkage rate of the carrier layer is less than or equal to 3%. A thickness of the radiative cooling film is in a range of 50 m to 170 ?m, and a thickness of the emissive layer accounts for 20% to 90% of the thickness of the radiative cooling film.

Abstract: A main stream reservoir ecological modulation method considering incoming water from interval tributaries is provided. The method determines the contribution ratio of the incoming water from interval tributaries to first-day's water rising in a high-flow surge process and when to start ecological modulations of spawning ground sections, determines a river course routing method after a main stream and its tributaries joining and calibrating parameters, based on past hydrological data, performing river flow calculation on the discharge volume of upstream reservoirs and the flow after interval tributaries joining, and determines a main stream reservoir ecological modulation mode considering incoming water from interval tributaries.

Abstract: The present disclosure provides a solar reflecting film and a preparation method thereof. The solar reflecting film includes a substrate and a functional layer stacked on each other. The functional layer includes a first reflecting layer, a barrier layer, and a second reflecting layer stacked on the substrate in order. The barrier layer includes a first barrier layer and a second barrier layer stacked on the first barrier layer. The first barrier layer is metal fluoride, inorganic non-metallic oxide, metal oxide or a combination thereof. The second barrier layer is metal oxides, metal nitrides, semiconductor doped compounds or a combination thereof. And a material of the first barrier layer is at least partially different from that of the second barrier layer.