Abstract: A mesoporous cerium oxide nano-material and a preparation method and an application thereof are provided in the present disclosure, belonging to the technical field of porous materials. The preparation method includes the following steps: using porous organic frameworks material as a templating agent, impregnating and adsorbing cerium salt precursor under an action of alkali, and removing the templating agent by roasting pyrolysis to obtain the mesoporous cerium oxide nano-material. POFs is carbonized into mesoporous carbon materials by calcination in inert atmosphere, which supports the mesoporous channels of cerium oxide, and then the carbonized carbon materials of POFs are removed by calcination in air atmosphere, forming the mesoporous structure of cerium oxide. The mesoporous cerium oxide nano-material prepared by the present disclosure has a high specific surface area and mesoporous structure, and is used as a catalytic material or catalyst carrier.

Abstract: The present disclosure provides a preparation method of a mesoporous CeO2-loaded Au catalyst, products and applications thereof, and belongs to the technical field of fine organic chemical industry. According to the present disclosure, firstly, COFs material COFs-41 is employed to prepare mesoporous CeO2 carrier material with high specific surface area; then, Au nanoparticles loaded on the surface of mesoporous CeO2 carrier pores are anchored by impregnation-reduction method to produce Au@CeO2 catalyst with high specific surface area; and then, mesoporous Au@CeO2 catalyst with high specific surface area, aromatic alcohols are added to a reactor, anhydrous methanol is used as a solvent, and heating is carried out to react in an atmosphere of atmospheric oxygen for a certain period of time at room temperature, and this catalyst catalyzes the oxidative transesterification of aromatic alcohols for synthesis of aromatic esters in a highly selective manner.

Abstract: The present invention discloses a built-in detection device and a detection method thereof for disposable diapers which relates to the technical field of intelligent diapers and includes a circuit substrate attached inside the diaper and an alarm module placed outside the diaper, wherein the circuit substrate is provided with a core circuit region, a temperature sensor, a urine-wet sensor group and a bioelectrogenesis module. The core circuit region includes a power management module, a data acquisition module and a wireless transmitting module. The data acquisition module is electrically connected to the power management module, the urine-wet sensor group, the wireless transmitting module, and the temperature sensor, respectively. The power management module is electrically connected to the bioelectrogenesis module. The wireless transmitting module is connected to the alarm module in wireless transmission.

Abstract: The present invention discloses a built-in detection device and a detection method thereof for disposable diapers which relates to the technical field of intelligent diapers and includes a circuit substrate attached inside the diaper and an alarm module placed outside the diaper, wherein the circuit substrate is provided with a core circuit region, a temperature sensor, a urine-wet sensor group and a bioelectrogenesis module. The core circuit region includes a power management module, a data acquisition module and a wireless transmitting module. The data acquisition module is electrically connected to the power management module, the urine-wet sensor group, the wireless transmitting module, and the temperature sensor, respectively. The power management module is electrically connected to the bioelectrogenesis module. The wireless transmitting module is connected to the alarm module in wireless transmission.

Abstract: A method for exfoliating and/or dispersing hexagonal boron nitride comprises mixing hexagonal boron nitride with a solvent system comprising at least two solvents. The use of a solvent system with at least two solvents provides improved benefits to the exfoliation process compared to the use of individual solvents.

Abstract: The present technology provides an electrical insulating material comprising a plurality of insulating dielectric layers and a thermally conductive layer disposed between adjacent dielectric layers, the thermally conductive layer comprising a thermally conductive filler. Additionally, the present technology also provides a method of manufacturing the electrical insulating material. The present technology also provides an electrically conductive apparatus comprising an electrically conductive material and an electrical insulating material disposed about the conductive material, the electrical insulating material comprising a first dielectric layer, a second dielectric layer overlying the first dielectric layer, and a thermally conductive layer disposed between the first and second dielectric layers, the thermally conductive layer comprising a thermally conductive filler, e.g., born nitride.

Abstract: A multi-functional composition including high aspect boron nitride particles providing improved properties such as thermal conductivity, electrical insulation, barrier to moisture, vapor, and gasses, lubrication, friction modification, optical properties, suspension stability, and a system and method for forming such compositions. The high boron nitride particles have an average aspect ratio greater than 300. The multifunctional composition may comprise of a polymer material, fluids, metals, ceramics, glasses, other non-BN fillers and the high aspect ratio boron nitride. Also provided are methods for making such boron nitride particles and compositions.

Abstract: The present invention provides a method for detecting a chicken Beard trait. Copy number variations of three DNA fragments were found to be present in the chromosomes of bearded chicken number 27, in the physical locations 1702269-1721521 bp, 4470331-4503417 bp, 3578409-3592890 bp; 3 molecular markers were determined, and 3 pairs of primers were designed for said molecular markers; the method of PCR is used for testing the chicken genome to be tested for the described 3 molecular markers; if the three target fragments of the PCR amplification reaction are 3200 bp, 501 bp, and 411 bp, then the detection result is positive; otherwise, the result is negative.