Abstract: Provided herein are compounds and compositions for treating, managing or preventing coronaviral related diseases. In particular, provided herein are compounds which are inhibitors of SARS-CoV-2 main protease (Mpro), pharmaceutical compositions comprising such compounds, method for synthesizing such compounds and methods of using such compounds and compositions for the treatment, management or prevention of coronaviral related diseases.

Abstract: Disclosed are a material supply mechanism, a tray assembly, a 3D printer and a 3D printing method. The material supply mechanism is configured to add a printing material to a tray of the 3D printer, and includes: a conveying assembly including a storage body and a conveying member, the storage body is internally provided with a storage cavity, the storage cavity is configured to store the printing material, and the conveying member is arranged in the storage cavity; a transmission assembly connected to the conveying member in a transmission manner and configured to drive the conveying member to move in the storage cavity when driven; and an output assembly connected to the storage body and configured to guide the printing material out into the tray. The disclosure improves in the related art that it is inconvenient to add a printing material for a 3D printer.

Abstract: An ink composition for ink-jet printing includes a functional material and an alkylene glycol derivative, wherein the functional material includes OTPD.

Abstract: Provided is a light-emitting element including: a first electrode; a first layer provided on the first electrode and including at least a light-emitting layer, the first layer being non-polar; an electron transport layer that is a second layer provided directly on the first layer and including at least one aromatic derivative selected from an aromatic derivative having a benzene ring skeleton containing one or more carboxyl groups and an aromatic derivative having a biphenyl skeleton containing one or more carboxyl groups, and metal oxide nanoparticles having electron transport properties; and a second electrode provided on the electron transport layer serving as the second layer.

Abstract: A light-emitting element includes an anode, a cathode, a light-emitting layer provided between the anode and the cathode, and a hole injection layer made of nickel hydroxide, the hole injection layer being provided between the anode and the light-emitting layer.

Abstract: Provided is a wearable sensor with enhanced light sensitivity. The wearable sensor is to be worn by a subject, the wearable sensor including: a supporting substrate; and sensor elements placed on the supporting substrate. The sensor elements each include: a light emitter which is an organic light emitting diode or an inorganic light emitting diode; and a reflected light receiver configured to measure a quantity of light emitted from the light emitter and reflected in a living body of a subject. Preferably, in a plan view, at least part of the reflected light receiver does not overlap the light emitter.

Abstract: A light-emitting element includes an anode, a cathode, a light-emitting layer, and a hole injection layer, and the hole injection layer includes a nickel oxide nanoparticle and dimethyl sulfoxide that chemically modifies the nickel oxide nanoparticle.

Abstract: Devices for controlling to remove food waste digestion foam are provided. The device includes a digestion tank. The digestion tank includes two hermetically sealed boxes. Each of the two boxes is opened with a liquid inlet connected to an interior of each of the two boxes. A conveying mechanism is connected between the two boxes. The conveying mechanism conveys a gas in the two boxes in a reciprocal manner. The gas in the two boxes is conveyed in the reciprocal manner through the conveying mechanism to generate a pressure difference between the two boxes distributed left and right to remove the foam, which adopts physical defoaming without adding any reagent, is cost-effective and efficient, and does not affect an anaerobic reaction process due to addition of a chemical defoaming agent. The entire device has a simple structure and is easy to operate, and the process is controllable.

Abstract: The disclosure provides a resin cleaning device and method. The resin cleaning device includes a control system, a treatment unit, a driving unit, and a feedback assembly. The treatment unit, the driving unit, and the feedback assembly are respectively in communication connection with the control system. The treatment unit is configured for treating a member-to-be-cleaned so as to reduce a viscosity of resin on the member-to-be-cleaned. The driving unit is configured for driving the member-to-be-cleaned to rotate. The feedback assembly is configured for acquiring a position signal of the member-to-be-cleaned and feeding the position signal back to the control system, such that the control system controls the treatment unit and the driving unit according to the position signal. Through the above manner, a more intelligent resin cleaning process with a better cleaning effect may be realized.

Abstract: An illuminating lens is provided, and light passing through a lens body is emitted to a first illumination area and a second illumination area, a first optical portion is provided on the side of a main optical axis corresponding to the first illumination area; a second optical portion, which is provided to be neighboring the first optical portion and The second optical portion is provided adjacent to the first optical portion, includes a second total reflective surface; and a third optical portion is provided adjacent to the second optical portion on the other side relative to the first optical portion. The illuminating lens of the present invention converges light from a light source at different angles, realizes separate illumination effects for different irradiation surfaces near and far, and has the effect of simplifying installation and reducing costs.

Abstract: An illuminating lens is provided, and light passing through a lens body is emitted to a first illumination area and a second illumination area, a first optical portion is provided on the side of a main optical axis corresponding to the first illumination area; a second optical portion, which is provided to be neighboring the first optical portion and The second optical portion is provided adjacent to the first optical portion, includes a second total reflective surface; and a third optical portion is provided adjacent to the second optical portion on the other side relative to the first optical portion. The illuminating lens of the present invention converges light from a light source at different angles, realizes separate illumination effects for different irradiation surfaces near and far, and has the effect of simplifying installation and reducing costs.

Abstract: The present disclosure provides a preparation method of resveratrol nervonic acid ester, comprising the following steps of: step 1: weighing resveratrol, a nervonic acid and thiocarbonyldiimidazole according to a molar ratio of 1:1:0.8 to 1:7:11.2 in a reactor; step 2: adding a certain amount of solvent into the reactor to completely dissolve the reactants; and step 3: stirring for reaction at room temperature for 30 min to 180 min. The preparation method is safe, efficient and clean, and enables synthesis of the resveratrol nervonic acid ester with high conversion rate, high purity and high yield.

Abstract: The disclosure provides a resin cleaning device and method. The resin cleaning device includes a control system, a treatment unit, a driving unit, and a feedback assembly. The treatment unit, the driving unit, and the feedback assembly are respectively in communication connection with the control system. The treatment unit is configured for treating a member-to-be-cleaned so as to reduce a viscosity of resin on the member-to-be-cleaned. The driving unit is configured for driving the member-to-be-cleaned to rotate. The feedback assembly is configured for acquiring a position signal of the member-to-be-cleaned and feeding the position signal back to the control system, such that the control system controls the treatment unit and the driving unit according to the position signal. Through the above manner, a more intelligent resin cleaning process with a better cleaning effect may be realized.

Abstract: A light-emitting element includes a first electrode, a hole transport layer formed on the first electrode, a light-emitting layer formed on the hole transport layer, and a second electrode formed on the light-emitting layer, wherein the hole transport layer contains a first hole transport material having a 3D mesh structure with molecules including a hole-transportability skeleton and at least two thermosetting functional groups being joined together to constitute a high molecule and contains a second hole transport material including a plurality of molecules having hole transportability.

Abstract: Embodiments of the present disclosure provide a device for kitchen waste digestion, including: a first treatment container, provided with a feed pipe and an exhaust pipe at a top, and internally configured with a plurality of pole plate pairs, the pole plate pairs including two pole plates, one of the pole plates being connected to a positive pole of a power source and another being connected to a negative pole of the power source, and a plurality of sieve holes being provided in each of the pole plates; and a second treatment container, a top of the second treatment container connecting to a bottom of the first treatment container, a middle part being configured with a plurality of filler layers spaced apart in a vertical direction, and a bottom being configured with an iron-carbon filler; and a filler in the filler layers including calcium peroxide and magnetite particles.

Abstract: The embodiments of the present disclosure provide a centralized treatment device for kitchen waste. The centralized treatment device includes an upper box, an outer cover, a pulverizer, an inner cover, a filter press, a drying granulator, a lower box, an electrolysis device, a hanging basket, a material box, an exhaust fan, and a linkage mechanism. Smashed kitchen waste is subjected to solid-liquid separation by the filter press. Filter residues enter the drying granulator to be partially carbonized, and partially carbonized filter residues and mixed powder treatment agent form solid residue particles. The solid residue particles degrade and adsorb pollutants in the water after being activated by an acidic solution. Meanwhile, accumulated water-absorbing solid residue particles help to degrade the pollutants in the water through the electrolysis device. A separation area is configured to separate oil and discharge the oil separately.

Abstract: Devices for controlling to remove food waste digestion foam are provided. The device includes a digestion tank. The digestion tank includes two hermetically sealed boxes. Each of the two boxes is opened with a liquid inlet connected to an interior of each of the two boxes. A conveying mechanism is connected between the two boxes. The conveying mechanism conveys a gas in the two boxes in a reciprocal manner. The gas in the two boxes is conveyed in the reciprocal manner through the conveying mechanism to generate a pressure difference between the two boxes distributed left and right to remove the foam, which adopts physical defoaming without adding any reagent, is cost-effective and efficient, and does not affect an anaerobic reaction process due to addition of a chemical defoaming agent. The entire device has a simple structure and is easy to operate, and the process is controllable.

Abstract: A method, computer program product, and computer system are provided. Based on an insert/update/delete (IUD) feature being enabled, and based on receiving an IUD request at a massively parallel processing (MPP) database management system (DBMS) engine, identifying a partition optimized for the IUD request. A partition map is loaded corresponding to a partition optimized for only IUD requests. Based on the IUD request being an insert row operation, a new distribution key is calculated by hash. A new partition map is generated, the insert row operation is executed using the new partition map.

Abstract: Embodiments of the present disclosure provide a device for kitchen waste digestion, including: a first treatment container, provided with a feed pipe and an exhaust pipe at a top, and internally configured with a plurality of pole plate pairs, the pole plate pairs including two pole plates, one of the pole plates being connected to a positive pole of a power source and another being connected to a negative pole of the power source, and a plurality of sieve holes being provided in each of the pole plates; and a second treatment container, a top of the second treatment container connecting to a bottom of the first treatment container, a middle part being configured with a plurality of filler layers spaced apart in a vertical direction, and a bottom being configured with an iron-carbon filler; and a filler in the filler layers including calcium peroxide and magnetite particles.

Abstract: The embodiments of the present disclosure provide a centralized treatment device for kitchen waste. The centralized treatment device includes an upper box, an outer cover, a pulverizer, an inner cover, a filter press, a drying granulator, a lower box, an electrolysis device, a hanging basket, a material box, an exhaust fan, and a linkage mechanism. Smashed kitchen waste is subjected to solid-liquid separation by the filter press. Filter residues enter the drying granulator to be partially carbonized, and partially carbonized filter residues and mixed powder treatment agent form solid residue particles. The solid residue particles degrade and adsorb pollutants in the water after being activated by an acidic solution. Meanwhile, accumulated water-absorbing solid residue particles help to degrade the pollutants in the water through the electrolysis device. A separation area is configured to separate oil and discharge the oil separately.