Abstract: A light-colored polycarboxylated polysaccharide tanning agent, and a preparation method and use thereof are provided. The light-colored polycarboxylated polysaccharide tanning agent includes the following raw materials: a polysaccharide, an organic solvent, a catalyst, and hydrogen peroxide. Based on a weight of the polysaccharide, a weight of the organic solvent accounts for 1 wt % to 15 wt %, a weight of the catalyst accounts for 0.05 wt % to 2 wt %, and a weight of the hydrogen peroxide accounts for 30 wt % to 80 wt %. The preparation method provided by the present disclosure adopts a two-phase solution system. Compared with the existing preparation technologies, the preparation method of the present disclosure can efficiently extract and remove colored substances produced during an oxidation process, and can timely block a polymerization reaction of the colored substances with an oxidized polysaccharide, such as to significantly reduce a chromaticity of an oxidized product.

Abstract: A cationic hyaluronic acid coated spanlastic, comprising a drug-loaded vesicle. The surface of the drug-loaded vesicle is modified by cationic hyaluronic acid, the drug-loaded vesicle comprises a vesicle membrane and a hydrophobic drug wrapped by the vesicle membrane, and the vesicle membrane comprises a nonionic surfactant and an edge activator.

Abstract: Disclosed is a camera optical lens including nine lenses, the nine lenses from an object side to an image side being: a first lens with a negative refractive power, a second lens with a positive refractive power, a third lens with a positive refractive power, a fourth lens with a negative refractive power, a fifth lens with a negative refractive power, a sixth lens with a positive refractive power, a seventh lens with a negative refractive power, an eighth lens with a positive refractive power and an ninth lens with a negative refractive power. The camera optical lens satisfies: ?4.50?f1/f??2.00; 5.50?d5/d6?32.00. The camera optical lens has good optical performance, and meets the design requirements of large apertures, wide-angle and ultra-thin.

Abstract: The present disclosure relates to optical lens, and provides a camera optical lens including from an object side to an image side in sequence: a first lens having a positive refractive power, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens; wherein the camera optical lens satisfies the following conditions: 0.95?f/TTL; ?5.00?f2/f??3.20; and 3.00?(R15+R16)/(R15?R16)?20.00. The camera optical lens can achieve good optical performance while meeting design requirements for a large aperture, a long focal length and ultra-thinness.

Abstract: A camera optical lens is provided. The camera optical lens includes, from an object side to an image side, a first lens, a second lens having a negative refractive power, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens. The camera optical lens satisfies following conditions: 0.60?f1/f?1.50; and 2.50?d7/d8?12.00, where f denotes a focal length of the camera optical lens, f1 denotes a focal length of the first lens, d7 denotes an on-axis thickness of the fourth lens, and d8 denotes an on-axis distance from an image side surface of the fourth lens to an object side surface of the fifth lens. The camera optical lens according to the present disclosure satisfies design requirements for large-aperture, wide-angle, and ultra-thin lenses while achieving good optical performance.

Abstract: The present invention provides a camera optical lens, including, from an object side to an image side, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a positive refractive power, and a fifth lens having a negative refractive power. The camera optical lens satisfies: ?2.00?f2/f??1.25; ?1.50?f4/f5??0.80; 1.50?d6/d8?3.00; ?1.50?(R1+R2)/(R1?R2)??1.00; and 6.00?R9/R10?15.00. The camera optical lens has excellent optical performance while meeting the design requirements of a large aperture, a wide angle, and ultra-thinness.

Abstract: A camera optical lens includes first to fifth lenses from an object side to an image side, which are first and fourth lenses having positive refractive power, and second, third and fifth lenses having negative refractive power. The camera optical lens satisfies 0.90?f1/f?1.30; ?5.00?f3/f??2.50; 10.00?d1/d2?25.00; and 0?(R7+R8)/(R7?R8)?0.90, where f, f1 and f3 respectively denote focal lengths of the camera optical lens, the first lens, and the third lens, R7 denotes a curvature radius of an object side surface of the fourth lens, R8 denotes a curvature radius of an image side surface of the fourth lens, d1 denotes an on-axis thickness of the first lens, and d2 denotes an on-axis distance from an image side surface of the first lens to an object side surface of the second lens. The camera optical lens has good optical performance and satisfies design requirements of a large angle, a wide angle and ultra-thinness.

Abstract: The disclosure provides a flexible substrate, a manufacturing method thereof, and a flexible display device. The flexible substrate includes a cell and a plurality of liquid crystal molecules disposed in the cell. The cell includes a plurality of sub-pixel display areas arranged in an array and a non-display area disposed outside the sub-pixel display areas. The liquid crystal molecules are disposed in each of the sub-pixel display areas and the non-display area, extending directions of the liquid crystal molecules in each of the sub-pixel display areas are perpendicular to a plane on which the flexible substrate is disposed, and extending directions of the liquid crystal molecules in the non-display area are parallel to the plane on which the flexible substrate is disposed. Risk of damage to electrically driven devices in the flexible display device having the flexible substrate can be reduced. As a result, reliability of products is improved.

Abstract: The disclosure provides a flexible substrate, a manufacturing method thereof, and a flexible display device. The flexible substrate includes a cell and a plurality of liquid crystal molecules disposed in the cell. The cell includes a plurality of sub-pixel display areas arranged in an array and a non-display area disposed outside the sub-pixel display areas. The liquid crystal molecules are disposed in each of the sub-pixel display areas and the non-display area, extending directions of the liquid crystal molecules in each of the sub-pixel display areas are perpendicular to a plane on which the flexible substrate is disposed, and extending directions of the liquid crystal molecules in the non-display area are parallel to the plane on which the flexible substrate is disposed. Risk of damage to electrically driven devices in the flexible display device having the flexible substrate can be reduced. As a result, reliability of products is improved.

Abstract: A nucleic acid extraction composition, reagents and kits containing the same and uses thereof. Provided is a nucleic acid extraction and purification reagent free of volatile organic solvents, which prevents the damage of volatile organic solvents to people and greatly improves the timeliness of nucleic acid extraction and purification, making the operation extremely simple, and the nucleic acid can be obtained within 10 minutes. The obtained nucleic acid may be used for biological reactions such as PCR, NASBA, LAMP and RPA. Moreover, the reagents of the present disclosure may be used to extract nucleic acids of cells, bacteria, fungi, DNA viruses and RNA viruses from various samples such as blood, throat swab preserving fluid, saliva, urine, sputum, excrement and the like, and very suitable for clinical and scientific research uses.

Abstract: A whole-process biological detection device is provided. The whole-process biological detection device belongs to the technical field of biological detection, and includes at least one reactor, where the reactor includes at least one sample-loading unit, at least one liquid release-control unit, at least one extraction unit, at least one liquid switch-control unit, at least one liquid collection unit, at least one liquid transfer unit, at least one liquid flow-control unit, at least one liquid quantitative dispersion unit and multiple reaction cells. The product of the solution has the characteristics of high integration, no need for additional reagents, simple operation, stable and reliable, etc., thereby achieving the goal of sealing the whole process of biological detection and effectively avoiding cross-contamination between samples and equipment.

Abstract: A sample extraction chip and a biological reaction device are disclosed according to the present disclosure. The sample extraction chip includes a chip body and a sample extraction module provided on the chip body, the sample extraction module includes a sample-loading lysis unit, a liquid release-control unit, an extraction unit, a liquid switch-control unit, a liquid collection unit and a sample collection unit, which are connected through flow channels in a sequence of extraction. The liquid release-control unit is configured to store and release liquid reagents, and the liquid switch-control unit is configured to switch between communication of the liquid collection unit and the extraction unit and communication of the sample collection unit and the extraction unit. The sample collection unit includes a front collection portion and a rear collection portion which are both in communication with the liquid switch-control unit.

Abstract: Use of a combination of a histone deacetylase inhibitor and a protein kinase inhibitor in the preparation of a medicament for the treatment or prevention of tumors, a pharmaceutical composition comprising a histone deacetylase inhibitor and a protein kinase inhibitor as active ingredients, and a method for treating or preventing cancers by combining a histone deacetylase inhibitor and a protein kinase inhibitor.

Abstract: The present application provides a display panel and a manufacturing method of the display panel. When an electrochromic layer is completely closed, a metasurface structure and an electrowetting structure reflect a light with corresponding wavelength to form a reflection state. When the electrochromic layer is partially closed, the metasurface structure and the electrowetting structure corresponding to a part of the closed electrochromic layer reflect the light with corresponding wavelength to form the reflection state, and the light penetrates through the wetted metasurface structure and a part of the unclosed electrochromic layer to form a transparent state.

Abstract: A material of a light emitting layer, a manufacturing method thereof, and an electroluminescent device are disclosed. The material of the light emitting layer includes a spiral nanotube structure and luminescent particles. The manufacturing method of the material of the light emitting layer includes steps of manufacturing the spiral nanotube structure and steps of manufacturing a guest-host structure. The manufacturing method is easily achieved, and a compatibility of the material is high.

Abstract: A rollable display device is provided, including: a flexible display panel including a plurality of edges; a fixing portion including a plurality of fixing rods for fixing some of the plurality of edges of the flexible display panel when the flexible display panel is in a second state; and a receiving portion including a cavity. In a first state, the flexible display panel is rolled and received into the cavity of the receiving portion with a first direction as an axis; and the plurality of fixing rods extends in the first direction and is received into the cavity of the receiving portion. In the second state, the flexible display panel is at least partially unrolled outside the receiving portion, and the plurality of fixing rods is located outside the cavity, extends in a second direction and supports the flexible display panel. The first direction intersects with the second direction.

Abstract: Methods of making luminescent perovskite-polymer composites are provided and structures using the same. Perovskite-polymer composites made by the method described herein are provided. The perovskite-polymer composite is useful in many applications including downconverters for backlight units (BLU) of liquid crystal displays (LCDs), as well as for and could be used for light emitting devices, lasers or as active absorber or passive luminescent concentrators for solar photovoltaic applications.

Abstract: A rollable display device is provided, including: a flexible display panel including a plurality of edges; a fixing portion including a plurality of fixing rods for fixing some of the plurality of edges of the flexible display panel when the flexible display panel is in a second state; and a receiving portion including a cavity. In a first state, the flexible display panel is rolled and received into the cavity of the receiving portion with a first direction as an axis; and the plurality of fixing rods extends in the first direction and is received into the cavity of the receiving portion. In the second state, the flexible display panel is at least partially unrolled outside the receiving portion, and the plurality of fixing rods is located outside the cavity, extends in a second direction and supports the flexible display panel. The first direction intersects with the second direction.

Abstract: A method of in-situ remediation of arsenic-contaminated soil, the method including: 1) inoculating a bacterial strain including Pseudomonas putida MnB1 in a culture medium where the addition amount of the bacterial strain accounts for 2-10% (v/v) of the culture medium; shaking the culture medium including the bacterial strain at the rotation speed of 100-180 rpm at 15-35° C. for 1-5 days under the aerobic condition thereby yielding an enriched bacterial strain; and 2) adding the enriched bacterial strain, manganese carbonate, ammonium ferrous sulfate, sodium citrate, and yeast extract to an arsenic contaminated soil; adding water to the soil until the soil has a moisture content of 50-70%, stirring the soil for 5-30 min, and culturing the bacterial strain in the soil under the aerobic/microaerobic condition at 10-40° C. for 2-6 weeks.

Abstract: Disclosed is a system including a substrate having a first side and a second side and a layer of photoacoustic material disposed on the first side of the substrate. The layer of photoacoustic material is configured to generate a directional ultrasound wave in response to a laser beam impinging on the layer. A conduit may be coupled to the housing and have an opening adjacent to the layer of photoacoustic material; the directional ultrasound wave may be directed through fluid that is contained in the conduct to generate a liquid jet in a liquid.