Abstract: The disclosure provides a new method for preparing a WPU synthetic leather foaming layer based on a Pickering foam template method. The key of the method is to use the soft waterborne polyurethane as raw materials, add waterborne crosslinking agent and hydrophobic inorganic solid particles as Pickering waterborne foam stabilizers to obtain Pickering waterborne foam slurry of polyurethane latex particles through high-speed emulsification; and dry the slurry to obtain the waterborne polyurethane foam layer. The preparation process does not use any organic solvents, is clean and environmentally-friendly, and is simple to operate, making it easier to realize industrialized production. In addition, the Pickering foam has strong interface stability, which effectively solves the problem of difficult adjustment of the pore size caused by the accumulation and collapse of bubbles during the drying process of the mechanical foaming method, and the prepared synthetic leather foam layer has good hygienic properties.

Abstract: Pre-impregnated nonwoven mats having improved fire performance are provided. The pre-impregnated nonwoven mats contain a nonwoven base layer and an impregnation composition, wherein the impregnation composition comprises a thermoset resin material. The selection of both a particular basis weight and a particular caliper index for the nonwoven base layer enables an improved absorption and cure of the impregnation composition during the manufacturing process, which provides a desired fire performance for the pre-impregnated non-woven mat without the need for further fire-retardant coatings.

Abstract: A composite nonwoven mat and a method of making a composite nonwoven mat are provided. The composite nonwoven mat includes a nonwoven base layer having a first surface and a second surface, and a polymer layer formed on and adhered to the first surface of the nonwoven base layer. The polymer layer extends partially into the nonwoven base layer. The composite nonwoven mat has an average Gurley porosity of at least 2,000 seconds.

Abstract: The present disclosure discloses a low-power display mechanism applied to a low-energy-storage device, comprising a circuit board assembly, a storage battery, and a low-power display screen. The low-power display screen comprises a top transparent electrode layer, a color developing particle layer, and a bottom electrode layer. In the present disclosure, the low-power display screen only consumes electricity when changing display content, and the display content can be maintained for long time and will not disappear even if there is a power outage. Furthermore, the display content can be clear and visible under strong light. The design significantly reduces the energy consumption by reducing the frequency of applying an electric field, and is suitable for being used in various low-energy-storage devices.

Abstract: Disclosed is a high-precision smart ring. Blood oxygen emitters are disposed on both sides of a blood oxygen receiver. The axial distance d between the blood oxygen emitter and the blood oxygen receiver at an inner-side wall surface of a ring holder is kept between 3.8 mm and 7 mm. In addition, a light shield is covered on the periphery of the blood oxygen receiver for preventing infrared light generated by a light source of the blood oxygen emitter from interfering with the receiving accuracy of the blood oxygen receiver, thereby greatly improving the accuracy of the heart rate and blood oxygen sensor. Then, the electrical devices on a flexible circuit board are arranged circumferentially around the ring holder in the sequence of the blood oxygen emitter, the blood oxygen receiver, blood oxygen emitter, a main control chip, an antenna, a storage battery, a charging interface and a temperature sensor.

Abstract: The present disclosure discloses a smart ring, including a ring body; a circuit board assembly and a storage battery are packaged in the ring body; a control chip and a near field communication (NFC) chip are packaged on the circuit board assembly; the ring body includes a finger ring stand; a coil is laid on a circumferential wall surface of the finger ring stand; and the coil is arranged around the circumferential wall surface of the finger ring stand, and is electrically connected to the circuit board assembly. Compared with the traditional arrangement of the NFC signal communication antenna in a partial region, the circumferential arrangement can effectively expand a signal receiving range and improve the signal receiving sensitivity, making wireless communication more sensitive and more stable.

Abstract: Embodiments of the present disclosure relate to a permission setting method and apparatus, a device, and a medium. The method includes: displaying a permission customization control, in response to a trigger operation on a permission setting object of task information, the permission setting object including a first information object and/or a second information object, the second information object being subordinate to the first information object; displaying a permission editing interface, in response to a trigger operation on the permission customization control, and receiving customization permission information via the permission editing interface; and displaying the customization permission information corresponding to the permission setting object. Therefore, a hierarchy structure based on the task information satisfies a setting need for content-based permission customization, and improves a permission management efficiency.

Abstract: A reinforced composite facer, an insulation assembly, and a method of making a reinforced composite facer are provided. The reinforced composite facer includes a carrier substrate, a scrim, and a thermoplastic coating that covers the scrim and contacts the carrier substrate and adheres the scrim to the carrier substrate. An insulation assembly including a reinforced composite facer has a pull-through strength that allows the insulation assembly to be installed using fewer fasteners, while also rendering the insulation assembly relatively impermeable.

Abstract: A coated reinforced composite facer. an insulation assembly, and a method of making a coated reinforced composite facer are provided. The coated reinforced composite facer includes a carrier substrate, a scrim, a thermoplastic coating, and a mineral coating. The thermoplastic coating adheres the scrim to one surface of the carrier substrate and the mineral coating is adhered to an opposite surface of the carrier substrate. An insulation assembly including a coated reinforced composite facer has a pull-through strength that allows the insulation assembly to be installed using fewer fasteners, while also rendering the insulation assembly relatively impermeable.

Abstract: In a method for determining metallogenic potential of a porphyry by using trace elements and a B isotope of tourmaline, redox properties of magma is determined with Fe3+/(Fe2++Fe3+) of tourmaline; then a water content and a content of metal Cu of the magma are determined with contents of H2O and Cu in the tourmaline; and a source of the magma is determined with a B isotope of the tourmaline, the water content, oxygen fugacity and metal content and source of the magma are finally determined, and finally, whether the magma has metallogenic potential of a porphyry is comprehensively determined. The present disclosure determines a key control factor of porphyry copper with a mineral of the tourmaline, and overcomes the difficulties in low efficiency, a long period and high cost of a traditional method for determining metallogenic potential.

Abstract: The present disclosure relates to a clock distribution method and apparatus in a network. A method performed at a clock distribution apparatus comprises: receiving a first clock signal; receiving a second clock signal; calculating an offset difference between the first clock signal and the second clock signal; compensating the second clock signal, based on the offset difference; and outputting a clock signal, based on the compensated second clock signal. The offset difference between the first clock signal and the second clock signal is calculated and used to compensate the second clock signal. The switching of the clock signal will be smoother for the downstream.

Abstract: A non-woven chopped fiber mat includes a mixture of glass fibers and synthetic fibers. The non-woven mat is formed using a binder composition that includes a binder resin, a coupling agent, and a corrosion inhibitor. The non-woven mat is non-corrosive and resistant to volatile unsaturated monomers such as styrene, but still remains fully compatible with solvent-containing polyester resins, such that it can be used in various pultruded products.

Abstract: Embodiments of the present disclosure relate to a permission setting method and apparatus, a device, and a medium. The method includes: displaying a permission customization control, in response to a trigger operation on a permission setting object of task information, the permission setting object including a first information object and/or a second information object, the second information object being subordinate to the first information object; displaying a permission editing interface, in response to a trigger operation on the permission customization control, and receiving customization permission information via the permission editing interface; and displaying the customization permission information corresponding to the permission setting object. Therefore, a hierarchy structure based on the task information satisfies a setting need for content-based permission customization, and improves a permission management efficiency.

Abstract: In one embodiment, a wireless access point receives, from a mobile system, a broadcast beacon that includes a roaming notification indicating that the mobile system intends to roam to the wireless access point. The wireless access point allocates, after receiving the broadcast beacon from the mobile system, an orthogonal frequency-division multiple access resource unit for use by the mobile system. The wireless access point sends a trigger message to the mobile system that includes an indication of the orthogonal frequency-division multiple access resource unit. The wireless access point performs, after sending the trigger message, a handoff exchange with the mobile system using the orthogonal frequency-division multiple access resource unit to attach the mobile system to the wireless access point.

Abstract: Disclosed is a method for discriminating ore prospecting types based on compositional change of epidote, in particular including the following steps: metallogenic zone delineation; sample collection and analysis: collecting bedrock samples containing epidote from the metallogenic zone according to certain sampling units; trace element analysis and testing; data processing and interpretation: processing obtained initial recorded data using LADRlib software; and ore prospecting type discrimination.

Abstract: A method for preparing a novel waterborne polyurethane foam layer for synthetic leather is disclosed. The method includes first preparing a charged cellulose nanofiber by using a wood pulp as a raw material; meanwhile, subjecting a polyisocyanate, a macromolecular diol, a hydrophilic chain extender and a small molecular chain extender to a polyaddition reaction and an acid-base neutralization reaction in sequence, to obtain a cationic or anionic waterborne polyurethane; adding the charged cellulose nanofiber and a certain amount of a crosslinking agent to the oppositely charged ionic waterborne polyurethane emulsion, stirring the resulting mixture, forming a bimolecular layer at the gas/liquid interface by a self-assembly of the cellulose nanofiber and waterborne polyurethane nanoparticles through electrostatic interactions to obtain a stable Pickering foam; using the stable Pickering foam as a template, drying and solidifying to obtain the waterborne polyurethane foam layer for synthetic leather.

Abstract: A binder composition for use in the manufacture of a nonwoven mat including a low-density fiber, and nonwoven mats made with the binder, are disclosed. The low-density fiber is able to reduce the acoustic openness of the nonwoven mats made therefrom while also capable of being delivered with existing binder technology and equipment.

Abstract: A nonwoven mat and a method of making a nonwoven mat are provided. The nonwoven mat includes reinforcing fibers and a binder composition that includes a polycarboxy polymer and polymer microspheres. The binder composition may also include low-density fibers, such as microfibrillated cellulose fibers. The polymer microspheres have a thermoplastic shell that encapsulates a blowing agent. The thermoplastic shell has magnesium hydroxide on its outer surface. The components of the binder composition interact with one another and/or the reinforcing fibers to form a nonwoven mat having a less permeable structure and a higher caliper.

Abstract: An uncoated nonwoven fibrous mat having a reduced air porosity is disclosed comprising a first plurality of fibers having a length between about 10 mm and 20 mm and an average diameter between about 9 ?m and 15 ?m; a second plurality of fibers having a length between about 3 mm and 8 mm and an average diameter between about 5 ?m and 8 ?m; and a binder composition. The uncoated nonwoven fibrous mat has an air porosity less than about 550 CFM.

Abstract: A composite nonwoven mat and a method of making a composite nonwoven mat are provided. The composite nonwoven mat includes a nonwoven base layer having a first surface and a second surface, and a coating layer formed on, penetrating into, and adhered to the first surface of the nonwoven base layer. The coating layer includes a polymer material and a carrier composition. The composite nonwoven mat has an average Gurley porosity of at least 500 seconds.