Abstract: The present disclosure provides an adhesive film for a photovoltaic module and a photovoltaic module. The adhesive film includes an edge portion, a transition portion, and a middle portion. The edge portion is provided with a first embossment recessed towards the interior of the edge portion. The transition portion is provided with a second embossment recessed towards the interior of the transition portion. The middle portion is provided with a third embossment recessed towards the interior of the middle portion. The edge portion is connected to the middle portion through the transition portion, a recessed space volume per unit area of the third embossment is greater than a recessed space volume per unit area of the second embossment, and the recessed space volume per unit area of the second embossment is greater than a recessed space volume per unit area of the first embossment.

Abstract: A photovoltaic module includes a first cover plate, a first adhesive film, a cell string, a second adhesive film and a second cover plate. The first cover plate has a first surface, facing the cell string and including a central area and an edge area surrounding the central area. The first adhesive film includes a first sub-adhesive film located on at least part of the edge area, and a second sub-adhesive film located on a surface of the first sub-adhesive film away from the first surface and having an orthographic projection on the first surface at least covering the central area and part of the edge area. Material of part of the first sub-adhesive film facing the cell string is the same as material of part of the second adhesive film facing the cell string, and material of part of the second sub-adhesive film facing the cell string is POE.

Abstract: A photovoltaic module includes a first sealing member, a pad strip, a solar cell string, and a second sealing member. A cross-linking rate of a material of the second sealing member is higher than that of a material of the first sealing member. The first sealing member, the solar cell string, and the second sealing member are sequentially arranged along a thickness direction of the photovoltaic module. The pad strip is located around the solar cell string and located between the first sealing member and the second sealing member. The pad strip is made of a same material as the first sealing member. A thickness of the first sealing member, a thickness of the second sealing member, and a thickness of the pad strip all gradually decrease along a length direction of the photovoltaic module towards an edge of the photovoltaic module.

Abstract: A fermented beverage and a preparation method are disclosed. The method uses ripened fruits and/or vegetables as raw materials. The method includes performing a natural ripening on a fruit and/or a vegetable at 15° C. to 30° C. for 5 days to 10 days to obtain a ripened fruit and/or vegetable; and inoculating lactic acid bacteria into the ripened fruit and/or vegetable, and performing a fermentation for 10 days to 30 days at 15° C. to 30° C. to obtain the fermented beverage. After 23 days of fermentation, the fermented beverage has a total flavonoid content up to 0.5 mg/mL to 2.0 mg/mL, which is beneficial to human health, a pH of 3.2 to 3.8 and a total titratable acidity of up to 12 mg/mL to 18 mg/mL. The fermented beverage requires a short fermentation cycle, which is beneficial to industrial production.

Abstract: A splicing adhesive film, a manufacturing method thereof, and a photovoltaic module are provided. The splicing adhesive film includes a first portion and a plurality of second portions. The first portion includes a first material, and each second portion includes a second material. The first portion is located in the central region, and the plurality of second portions each are at least partially located in the edge region. The first portion and each second portion are at least partially overlapped in the first direction. The maximum thickness of each second portion located in the edge region is P, and the maximum thickness of the first portion located in the central region is Q, P>Q.

Abstract: A fermented beverage and a preparation method are disclosed. The method uses ripened fruits and/or vegetables as raw materials. The method includes performing a natural ripening on a fruit and/or a vegetable at 15° C. to 30° C. for 5 days to 10 days to obtain a ripened fruit and/or vegetable; and inoculating lactic acid bacteria into the ripened fruit and/or vegetable, and performing a fermentation for 10 days to 30 days at 15° C. to 30° C. to obtain the fermented beverage. After 23 days of fermentation, the fermented beverage has a total flavonoid content up to 0.5 mg/mL to 2.0 mg/mL, which is beneficial to human health, a pH of 3.2 to 3.8 and a total titratable acidity of up to 12 mg/mL to 18 mg/mL. The fermented beverage requires a short fermentation cycle, which is beneficial to industrial production.

Abstract: The invention provides a method for establishing a separable regeneration system for verifying regeneration effect between two antioxidants, which belongs to the field of regeneration effect of antioxidants. According to different solubilities of two antioxidants, lipid-soluble antioxidant is first combined into PE film, and water-soluble antioxidant is dissolved into deionized water and a separable regeneration system where antioxidants can contact with other but not dissolve in each other is formed. This method compares the differences of change of antioxidant capacity in aqueous phase with and without lipid-soluble antioxidant so that to judge whether the added lipid-soluble antioxidant has regeneration effect on aqueous-soluble antioxidant. The present invention effectively verifies the regeneration effect between different antioxidants, and has advantages of simple operation, less interference factors, intuitive and high efficiency.

Abstract: Disclosed is a method for non-destructive detection of egg freshness based on Raman spectroscopy technology, which belongs to the field of food detection. Partial least squares regression models are built using Raman spectroscopic data and measured values of physicochemical indexes for egg freshness, which can be used to predict egg freshness based on Raman spectrum of egg shell surface. The Raman spectroscopic data are collected in the waveband of 100-3000 cm?1. The physicochemical indexes used in the invention include the Haugh unit, the albumen pH, the air chamber diameter and the air chamber height. By using the partial least squares model, values of physicochemical index for egg freshness can be obtained from Raman spectra collected on egg shell surfaces, thus achieving the goal of non-destructive detection of egg freshness.

Abstract: The invention provides a method for establishing a separable regeneration system for verifying regeneration effect between two antioxidants, which belongs to the field of regeneration effect of antioxidants. According to different solubilities of two antioxidants, lipid-soluble antioxidant is first combined into PE film, and water-soluble antioxidant is dissolved into deionized water and a separable regeneration system where antioxidants can contact with other but not dissolve in each other is formed. This method compares the differences of change of antioxidant capacity in aqueous phase with and without lipid-soluble antioxidant so that to judge whether the added lipid-soluble antioxidant has regeneration effect on aqueous-soluble antioxidant. The present invention effectively verifies the regeneration effect between different antioxidants, and has advantages of simple operation, less interference factors, intuitive and high efficiency.

Abstract: The present invention discloses a molecularly imprinted fluorescence sensor based on carbon dots for detecting chloramphenicol (CAP) and its preparation method and its application. This invention uses carbon dots (CD) as fluorescence carrier and molecularly imprinted membrane (MIP) as enrichment container to synthesize fluorescent molecularly imprinted material with core-shell structure so that to achieve a rapid and specific detection of CAP. The reverse micro-emulsion method was used, firstly a reverse microemulsion system was established, CAP was used as a template molecule in the water phase, and a molecularly imprinted membrane was synthesized on the surface by using CD as a carrier. The prepared material is nano-sized microspheres with excellent water-dispersibility and stability. It has good sensitivity to the target substance CAP, rapid detection speed, strong specific selectivity, strong chemical stability and low cost, and has good application prospects in the detection of CAP.

Abstract: A method for rapidly detecting S. typhimurium in milk through a Raman spectrum based on heavy water marking. The method comprises the steps of adding to-be-detected milk possibly containing S. typhimurium into culture media containing heavy water for culturing, then collecting cultured S. typhimurium cells and conducting Raman spectrum scanning, and analyzing and processing an obtained original Raman spectrum, so that S. typhimurium in the to-be-detected milk is detected. According to the method of the invention, D2O marking is adopted, and the Raman spectrum is used for rapidly detecting S. typhimurium in milk, so that the method has the advantages of being short in detection time (4-8 h), high in sensitivity, low in cost, easy to operate, convenient and fast to implement and the like; the detection limit is 104-108 cfu/mL, interference from the matrix in a milk sample is small, and the method is an ideal method for rapidly detecting S.

Abstract: A method for representing the quality change process of beef fat during repeated freezing and thawing through a Raman spectrum. The method comprises the steps of (1) setting operating parameters of a laser Raman spectrometer, wherein the operating parameters include the wavelength of exciting light, the laser power and the scanning time; (2) repeatedly freezing and thawing beef, extracting fat in the thawed beef, and then conducting Raman spectrum scanning on the extracted fat; (3) analyzing and processing an obtained original Raman spectrum, so that the quality change process of beef fat during repeated freezing and thawing is represented. The Raman spectrum is used for monitoring the quality change process of beef fat during repeated freezing and thawing, the method is flexible and simple, the analysis speed is high, and the fat quality of beef which is repeatedly frozen and thawed can be represented efficiently and accurately; in addition, analysis solvent consumption is low, and the detection cost is low.