Provided is filtration member for use in a filtration device, said filtration member comprising a layer of woven or nonwoven fabric having two primary surfaces and a layer of chemically functionalized graphite flakes deposited on at least one of the two primary surfaces or embedded in the layer of woven or nonwoven fabric, wherein said graphite flakes comprise chemical function contain 1%-50% by weight of a non-carbon element selected from O, N, H, F, Cl, Br, I, or a combination thereof. Also provided is a face mask comprising: (a) a mask body configured to cover at least wearer's mouth and nose; and (b) a fastener to hold the mask in place on the wearer's face; wherein the mask body includes (i) an air-permeable outer layer, (ii) an inner layer located on a wearer's side when the mask is worn, and (iii) the filtration member comprising graphite flakes.

Provided is filtration member for use in a filtration device, said filtration member comprising a layer of woven or nonwoven fabric having two primary surfaces and a layer of chemically functionalized graphite flakes deposited on at least one of the two primary surfaces or embedded in the layer of woven or nonwoven fabric, wherein said graphite flakes comprise chemical function contain 1%-50% by weight of a non-carbon element selected from O, N, H, F, Cl, Br, I, or a combination thereof. Also provided is a face mask comprising: (a) a mask body configured to cover at least wearer's mouth and nose; and (b) a fastener to hold the mask in place on the wearer's face; wherein the mask body includes (i) an air-permeable outer layer, (ii) an inner layer located on a wearer's side when the mask is worn, and (iii) the filtration member comprising graphite flakes.

Described herein is a construction comprising a microsphere layer comprising a plurality of microspheres, wherein the microspheres comprise glass, ceramic, and combinations thereof; a bead bonding layer, wherein the plurality of microspheres is partially embedded in the bead bonding layer forming a first surface comprising exposed microspheres, wherein the plurality of microspheres on the first surface are truncated. Also disclosed herein are articles comprising the construction and methods of making thereof.

The invention relates to an array type paper chip for 2019-nCoV virus high-throughput detection and a manufacturing method of the array type paper chip. The array type paper chip comprises a glass substrate layer, a paper unit layer and a cell grid layer which are arranged in sequence from bottom to top, wherein the grid layer comprises N circular paper detection units with a diameter R being arranged in the form of an array; and the unit grids of the unit grid layer are in one-to-one correspondence to the paper detection units to separate the paper detection units. The array type paper chip is simple in structure, the manufacturing process is simple and stable, the finished products are stable, requirements on the processing environment and conditions are very low, and processing equipment is low in price. Moreover, the processing process does not revolve any chemical reagent, and therefore, the method is more environmentally friendly than methods such as ultraviolet lithography.

The invention relates to an array type paper chip for 2019-nCoV virus high-throughput detection and a manufacturing method of the array type paper chip. The array type paper chip comprises a glass substrate layer, a paper unit layer and a cell grid layer which are arranged in sequence from bottom to top, wherein the grid layer comprises N circular paper detection units with a diameter R being arranged in the form of an array; and the unit grids of the unit grid layer are in one-to-one correspondence to the paper detection units to separate the paper detection units. The array type paper chip is simple in structure, the manufacturing process is simple and stable, the finished products are stable, requirements on the processing environment and conditions are very low, and processing equipment is low in price. Moreover, the processing process does not revolve any chemical reagent, and therefore, the method is more environmentally friendly than methods such as ultraviolet lithography.

A biodegradable and compostable sheet of material for picking up and disposing of dog excrement in an environmentally friendly manner. The sheet comprises paper or paperboard that is made grease resistant. The sheets may be stored in individual sheets or on an elongated sheet that may be folded and rolled for use with dispensing units.

In operation, a user grabs or tears off an individual sheet and then places the sheet over the dog excrement so that it is located generally about the sheet's center. The corners or top edges of the sheet may then be grasped and rotated in a direction opposite of the rotation of the central section so that a twist end is formed to retain the dog excrement within a sack. The sack may then be disposed of in a trash can or composter, wherein it will degrade in an environmental safe way.

Compounds useful for formulating inks, 3D printing resins, molding resins, coatings, sealants and adhesives which exhibit reduced shrinkage stress and high hardness and stiffness when cured are described which include a single free radical-polymerizable functional group, one or more urethane and/or ureido linkages and one or more cyclic structural elements per molecule.

The present disclosure provides adhesive articles that can be removed from surfaces without damage by having reduced or eliminated contribution of a core backing to peel force generated by the adhesive during removal. In some instances, this can be accomplished by a core that loses structural integrity in a direction normal to a plane defined by a major surface. In other instances, the contribution is reduced by compromising the interface between the core and a peelable adhesive layer.

In a method of producing a resin frame member for a fuel cell, a processing die is used. The method includes a processing step of moving an upper die toward a lower die to thereby form an inclined surface on each of side parts of a resin film. In the processing step, shearing is performed while maintaining a predetermined clearance between the lower processing section and the upper processing section and in a state where each of the side parts is at least partially positioned at a cutout so that each of the side parts is inclined downward toward the inside. The cutout is formed by cutting off an edge part of a placement surface that is positioned on the lower processing section side.

The present invention provides a graphite sheet having a ratio of thermal diffusivity in horizontal and vertical directions of 300 or more. Also, the present invention provides a graphite sheet having a ratio of thermal diffusivity in a vertical direction of 2.0 mm.sup.2/s or less. The graphite sheet has excellent thermal conductivity in horizontal and vertical directions and excellent flexibility at the same time and can be produced at low manufacturing cost, thereby holding an economic advantage.