Abstract: Disclosed is a preparation method for preparing diphenylmethane diisocyanate. The preparation method comprises: under a catalyst condition, performing a pyrolysis reaction on diphenylmethane dicarbamate in an inert solvent having a boiling point lower than that of diphenylmethane diisocyanate to obtain diphenylmethane diisocyanate.

Abstract: A chronic disease prediction system based on a multi-task learning model. The system includes a computer memory, a computer processor and a computer program which is stored in the computer memory and executable on the computer processor, wherein a trained chronic disease prediction model is stored in the computer memory, and the chronic disease prediction model is composed of a shared layer convolutional neural network and a plurality of chronic disease branch networks; and when executing the computer program, the computer processor implements the following steps: preprocessing a to-be-predicted physical examination record and then inputting the record into the shared layer convolutional neural network of the chronic disease prediction model for feature extraction to obtain a feature map, and inputting the obtained feature map into each chronic disease branch network and performing feature extraction and prediction respectively to obtain a chronic disease prediction result.

Abstract: A volatile material dispensing system (100) includes a base (104) and a refill (102) attached to the base (104). The refill (102) includes a substrate (108) having a volatile material thereon. The dispensing system (100) further includes a cover (106). In an inactive state, the refill (102) is compressed within the cover (106) and the cover (106) is attached to the base (104) and in an active state, the cover (106) is removed from the base and the refill (102) automatically expands such that the volatile material is released from the substrate (108) and into the ambient environment.

Abstract: An antenna includes a coupling device having first and second coupling plates, e.g. rectangular plates, connected at opposite ends of a conducting bar that acts as a stripline signal feed. A radio-frequency (RF) source may be connected to the conducting bar via a signal feed network. Multiple instances of the device may be arranged vertically in an antenna array assembly to operate together such that the radiation pattern of the antenna assembly is generally directed horizontally. The array may operate to provide a relatively flat azimuthal gain up to 180° across the UHF or VHF bands.

Abstract: An elliptically polarized cavity backed wideband slot antenna with a planar log-periodic dipole is provided. Sufficiently large bandwidth is achieved with careful design of the dipole. Also, the antenna has constant E-field distribution and good impedance properties, and ensures a constant power ratio for vertical polarization and horizontal polarization over a broad frequency band.

Abstract: The invention relates to a cavity resonator device (1000) comprising at least two adjacent cavity resonators (1010, 1020) for radio frequency, RF, signals, separated by a common side wall (1030) having an opening (1032) wherein said cavity resonator device (1000) comprises at least one coupling element (100) for coupling two adjacent cavity resonators (1010, 1020) of said cavity resonator device (1000) wherein said at least one coupling element (100) comprises a base section (110) and a top section (120), wherein said top section (120) is displaced vertically from said base section (110) by a first distance (d1) along a longitudinal axis (a1) of said coupling element (100), and wherein said coupling element (100) comprises at least a first coupling arm (130) and a second coupling arm (140), each of said coupling arms (130, 140) connecting said base section (110) with said top section (120), wherein said at least one coupling element (100) is arranged rotably around an axis of rotation with respect to said wal

Abstract: The present disclosure relates to a method for thermal desorption treatment of organic-contaminated soil. The method includes: subjecting thermal desorption flue gas with a temperature of 120-700° C. and the organic-contaminated soil to a countercurrent contact reaction for 5-30 min to obtain desorption waste gas comprising an organic pollutant and thermally desorbed soil; drying biomass to a water content of ?12%, and crushing to a length of ?20 cm to obtain a biomass segment; uniformly mixing the thermally desorbed soil with the biomass segment to obtain a mixture A, carrying out low-temperature pyrolytic carbonization of the biomass in the mixture A at a temperature of 250-450° C., heating the soil to obtain remedied soil including organic carbon and pyrolysis gas from the low-temperature pyrolytic carbonization. The disclosure mixes the thermally desorbed soil with the biomass for pyrolytic carbonization, greatly improving the content of an organic matter, recovering a soil function.

Abstract: An elliptically polarized cavity backed wideband slot antenna with a planar log-periodic dipole is provided. Sufficiently large bandwidth is achieved with careful design of the dipole. Also, the antenna has constant E-field distribution and good impedance properties, and ensures a constant power ratio for vertical polarization and horizontal polarization over a broad frequency band.

Abstract: A digital sight-singing piano is disclosed with a fixed-solfège keyboard, continuous keys and adjustable tones by kneading piano keys, wherein the key can be varied continuously and the frequency of a piano key can be slightly adjusted by kneading the piano key during playing. The keyboard of the digital sight-singing piano has fixed solfège, wherein no matter what key is used for playing, the piano keys in a solfège key set always have the same correspondence to the solfège syllables of the numbered musical notation in one octave. A color graphic vector numbered musical notation is also disclosed, wherein extended solfège is used to describe pitch, different colors are used to indicate the positions of the piano keys to press, notation frames with fixed width are used to represent the beat unit, and font (i.e., bold or not) of musical notes are used to show the strength of pressing piano keys. The color graphic vector numbered musical notation is suitable for computer-aided notation.

Abstract: An antenna includes a coupling device having first and second coupling plates, e.g. rectangular plates, connected at opposite ends of a conducting bar that acts as a stripline signal feed. A radio-frequency (RF) source may be connected to the conducting bar via a signal feed network. Multiple instances of the device may be arranged vertically in an antenna array assembly to operate together such that the radiation pattern of the antenna assembly is generally directed horizontally. The array may operate to provide a relatively flat azimuthal gain up to 180° across the UHF or VHF bands.

Abstract: A digital sight-singing piano is disclosed with a fixed-solfège keyboard, continuous keys and adjustable tones by kneading piano keys, wherein the key can be varied continuously and the frequency of a piano key can be slightly adjusted by kneading the piano key during playing. The keyboard of the digital sight-singing piano has fixed solfège, wherein no matter what key is used for playing, the piano keys in a solfège key set always have the same correspondence to the solfège syllables of the numbered musical notation in one octave. A color graphic vector numbered musical notation is also disclosed, wherein extended solfège is used to describe pitch, different colors are used to indicate the positions of the piano keys to press, notation frames with fixed width are used to represent the beat unit, and font (i.e., bold or not) of musical notes are used to show the strength of pressing piano keys. The color graphic vector numbered musical notation is suitable for computer-aided notation.

Abstract: A method of detecting the vascular condition based on point fluctuation conduction characteristics of the heart and a device utilizing the same are disclosed in this patent.

Abstract: The invention relates to a cavity resonator device (1000) comprising at least two adjacent cavity resonators (1010, 1020) for radio frequency, RF, signals, separated by a common side wall (1030) having an opening (1032) wherein said cavity resonator device (1000) comprises at least one coupling element (100) for coupling two adjacent cavity resonators (1010, 1020) of said cavity resonator device (1000) wherein said at least one coupling element (100) comprises a base section (110) and a top section (120), wherein said top section (120) is displaced vertically from said base section (110) by a first distance (d1) along a longitudinal axis (a1) of said coupling element (100), and wherein said coupling element (100) comprises at least a first coupling arm (130) and a second coupling arm (140), each of said coupling arms (130, 140) connecting said base section (110) with said top section (120), wherein said at least one coupling element (100) is arranged rotably around an axis of rotation with respect to said wal

Abstract: A dispensing device for release of an air treatment material includes a semi-permeable substrate having a mesh size between about 15 strands per cm to about 79 strands per cm and a support component for supporting the semi-permeable substrate. The dispensing device releases the air treatment material at a rate of at least about 0.05 mg/hr at about 25° C.

Abstract: A conductor is formed of a first portion to define a first area in a plane that is substantially perpendicular to a first magnetic field direction in a first cavity resonator and a second portion to define a second area in a plane that is substantially perpendicular to a second magnetic field direction in a second cavity resonator. Inductive current generated in the first portion flows in substantially the same direction as current in the second portion. The conductor may be deployed in an aperture between the first and second cavity resonators to couple or cross-couple the first and second cavity resonators. The conductor may also be deployed to couple or cross-couple cavity resonators in a filter implemented in a broadcast- or base station.

Abstract: A conductor is formed of a first portion to define a first area in a plane that is substantially perpendicular to a first magnetic field direction in a first cavity resonator and a second portion to define a second area in a plane that is substantially perpendicular to a second magnetic field direction in a second cavity resonator. Inductive current generated in the first portion flows in substantially the same direction as current in the second portion. The conductor may be deployed in an aperture between the first and second cavity resonators to couple or cross-couple the first and second cavity resonators. The conductor may also be deployed to couple or cross-couple cavity resonators in a filter implemented in a broadcast- or base station.

Abstract: A volatile material dispensing system (100) includes a base (104) and a refill (102) attached to the base (104). The refill (102) includes a substrate (108) having a volatile material thereon. The dispensing system (100) further includes a cover (106). In an inactive state, the refill (102) is compressed within the cover (106) and the cover (106) is attached to the base (104) and in an active state, the cover (106) is removed from the base and the refill (102) automatically expands such that the volatile material is released from the substrate (108) and into the ambient environment.

Abstract: A method for preparing polymethylene polyphenyl polycarbamate is provided. The method includes dissolving phenylcarbamate in a water-immiscible organic solvent to form a solution A, formulating an aqueous acid catalyst solution to form a solution B, forming a reaction system comprising an organic phase and an aqueous phase by firstly adding a methylating reagent to the solution B and then mixing the solution A and the solution B, wherein the organic phase comprises phenylcarbamate and the aqueous phase comprises the acid catalyst and the methylating reagent. The method further includes reacting the reaction system under stirring at a reaction temperature of 30° C. to 200° C. and a reaction pressure of 0.05 MPa to 5 MPa to produce a polymethylene polyphenyl polycarbamate product mixture dissolved in the organic phase, and separating the polymethylene polyphenyl polycarbamate product mixture by allowing the organic phase and the aqueous phase to stand still and stratify.