Abstract: Disclosed is a dual pressure-boosting high wind speed fan, including a driving motor, a fan housing and a fan blade. An air duct of the housing is formed inside the fan housing; the fan blade is provided with a shaft mounting portion and a blade assembly, wherein the shaft mounting portion is tightly mounted on a power output shaft of the driving motor through a shaft mounting hole; and the fan housing includes a cylindrical wall of the housing, a spherical portion and a motor fixing portion. The dual pressure-boosting high wind speed fan features novel structural design, high working wind speed, small turbulent flow and noise and good mute effect.

Abstract: A non-road engine is provided. The non-road engine includes a carburetor and a combination switch for controlling on-off of a fuel supply pipe between a fuel tank and the carburetor, where the carburetor is provided with a control valve for controlling opening and closing of a main jet; the control valve is linked and matched with the combination switch; when the combination switch is in an on state, the control valve causes the main jet to be in an open state; and when the combination switch is in an off state, the control valve causes the main jet to be in a closed state.

Abstract: Disclosed is a method, device, and system for testing the static contact angle of reagent asphalt, the method includes the following steps: acquiring a side image of a stable droplet formed by a test reagent on asphalt surface, and determining the position of a baseline in the side image; cropping the side image to obtain a droplet image, and extracting droplet contour points in the droplet image; screening out effective contour points corresponding to contours of the two sides of the droplet from the droplet contour points; performing cubic polynomial fitting on the effective contour points to obtain curve function of contour curves on both sides; calculating contact angle value from the curve function and the position of the baseline. The beneficial effects of this disclosure are: this disclosure reduces the difficulty of fitting of the droplet contour and thus improves the calculation precision of the contact angle.

Abstract: Disclosed is method for evaluating influence of humidity on adhesion of asphalt-aggregate adhesion, the method includes the following steps: S1 putting multiple pull-out specimens into constant temperature and humidity phases with different relative humidity for curing, after the humidity reaches equilibrium, carrying out macroscopic mechanical pull-out test out and obtaining images of two aggregate surfaces of each broken pull-out specimen; S2 cropping the images, and then importing the cropped images into the Images Pro Plus software; S3 obtaining asphalt peeling rate according to the pixel value and calculation formula of asphalt peeling rate; S4 according to the asphalt peeling rate, asphalt cohesive energy and asphalt-aggregate binding energy, combined with calculation formula of asphalt-aggregate interface energy, obtaining asphalt-aggregate interface energy, and evaluating asphalt-aggregate adhesion according to the interface energy.

Abstract: Disclosed is a method for calculating surface energy matching index of specific surface area of asphalt mortar-aggregate, including the following steps: determining surface energy parameter of aggregate by vapor adsorption method; determining surface energy parameter of filler by improved capillary rising method; determining specific surface area of asphalt mixture aggregate by specific surface area coefficient method; using an automatic specific surface area and pore analyzer to determine the specific surface area of the filler; calculating adhesive bond energy of the asphalt mixture and adhesive bond energy under liquid condition; calculating the surface energy matching index of asphalt mortar-aggregate. The beneficial effects of this disclosure include: the water stability of asphalt mixture is improved because the influence of the surface energy matching index of the specific surface area of asphalt mortar-aggregate is considered.

Abstract: Thermoplastic compositions are described that exhibit heat stability in addition to flexibility. Methods for forming the thermoplastic compositions are also described. The compositions include a polyarylene sulfide, an impact modifier and a heat stabilizer. The composition includes the impact modifier in a relatively large amount in combination with the heat stabilizer to provide long term heat stability to the composition and products formed therefrom such as coated wires and cables.

Abstract: Disclosed is a dual pressure-boosting high wind speed fan, including a driving motor, a fan housing and a fan blade. An air duct of the housing is formed inside the fan housing; the fan blade is provided with a shaft mounting portion and a blade assembly, wherein the shaft mounting portion is tightly mounted on a power output shaft of the driving motor through a shaft mounting hole; and the fan housing includes a cylindrical wall of the housing, a spherical portion and a motor fixing portion. The dual pressure-boosting high wind speed fan features novel structural design, high working wind speed, small turbulent flow and noise and good mute effect.

Abstract: Disclosed is a method for measuring surface energy of aggregates based on static drop method, comprising (1) aggregates grinding and pretreatment; (2) obtaining the surface texture index; (3) calculating the surface energy based on static drop method experiment; (4) fitting to obtain a functional relationship between the surface texture index and surface energy; (5) calculating the surface energy of the original aggregate. The method considers the influence of the grinding process on the surface texture of the aggregates when measuring the surface energy of the aggregates, which significantly improves the accuracy of the static drop method test. The static drop method can be used to replace the vapor adsorption method to test the surface energy of aggregate, and the low-cost optical contact angle instrument can replace the expensive magnetic suspension weight balance system to test the surface energy of aggregate, which greatly reduces the test cost.

Abstract: A polyoxymethylene polymer composition is disclosed containing a formaldehyde stabilizer package. The formaldehyde stabilizer package, which contains at least two emission control agents, dramatically and unexpectedly reduces formaldehyde emissions. The formaldehyde stabilizer package includes at least two emission control agents selected from the group of benzoguanamine compounds, a hydantoin, a substituted hydantoin, an amino acid, and an alkylene urea such as ethylene urea.

Abstract: Polyoxymethylene polymer compositions and molded articles made from the composition are disclosed that are fuel resistant, particularly diesel fuel resistant, and resistant to highly acidic solutions. The polymer composition contains a polyoxymethylene polymer generally in an amount from about 90% to about 95% by weight. In addition, the polymer composition contains an acid neutralizing agent and a plasticizer at a weight ratio that has been found to significantly improve the acid resistant properties of the composition.

Abstract: A composite structure comprising a resinous component that is adhered to a surface of a metal component is provided. The resinous component is formed from a polymer composition that comprises a polyarylene sulfide, inorganic fibers, and an impact modifier. The inorganic fibers have an aspect ratio of from about 1.5 to about 10.

Abstract: Disclosed are porous elements that include sintered polymeric particles. The polymeric particles can be formed of a thermoplastic composition that includes a polyarylene sulfide. The polymeric particles sintered to form the porous elements have a very narrow size distribution. The porous elements can maintain their functionality and morphology even when utilized in high temperature applications.

Abstract: Methods and systems for cloud computing service integration with an end-user application are described. The methods receive connection information necessary to connect to a cloud platform, the cloud platform being an architecture hosting the cloud computing services, and request, at runtime by submitting the connection information to the cloud platform, endpoint information of one or more components hosted by the cloud platform. The methods then receive, from the cloud platform, in response to the submitted connection information, endpoint information of the one or more components hosted by the cloud platform. The endpoint information includes at least parameters required to invoke the one or more components. The methods also generate metadata for each component of the one or more components, the metadata of each component comprising endpoint information enabling the end-user application to invoke the respective component of the cloud platform. The systems are configured to implement the described methods.

Abstract: A screening kit for paroxysmal supraventricular tachycardia contains a reagent for detecting a human CACNA1B gene c. 1700A>G mutation site at base No. 1700 in a coding region of CACNA1B gene from A to G.

Abstract: Disclosed is a method for calculating surface energy matching index of specific surface area of asphalt mortar-aggregate, including the following steps: determining surface energy parameter of aggregate by vapor adsorption method; determining surface energy parameter of filler by improved capillary rising method; determining specific surface area of asphalt mixture aggregate by specific surface area coefficient method; using an automatic specific surface area and pore analyzer to determine the specific surface area of the filler; calculating adhesive bond energy of the asphalt mixture and adhesive bond energy under liquid condition; calculating the surface energy matching index of asphalt mortar-aggregate. The beneficial effects of this disclosure include: the water stability of asphalt mixture is improved because the influence of the surface energy matching index of the specific surface area of asphalt mortar-aggregate is considered.

Abstract: A screening kit for paroxysmal supraventricular tachycardia contains a reagent for detecting a human CACNA1B gene c. 1700A>G mutation site at base No. 1700 in a coding region of CACNA1B gene from A to G.

Abstract: The present disclosure belongs to the technical field of lithium battery cathode materials, and discloses a preparation method of multiple carbon-coated high-compaction lithium iron manganese phosphate, comprising the following steps: (1) synthesizing a carbon and vanadium co-doped ferromanganese phosphate precursor through a co-precipitation method, sintering, and removing crystal water to obtain an anhydrous ferromanganese phosphate precursor; (2) adding lithium phosphate, a supplemental phosphorus source, an organic carbon source, a dopant and deionized water, and performing ball milling, wet sanding, spray drying and sintering to obtain an intermediate material; and (3) adding deionized water and the organic carbon source, then performing ball milling, sanding, spray drying, sintering and air jet pulverization to obtain multiple carbon-coated high-compaction lithium iron manganese phosphate.

Abstract: A method for predicting and calculating aggregate surface energy is provided and includes steps: (1) raw aggregate screening and treatment; (2) surface texture index acquirement of a polished aggregate and an untreated raw aggregate; (3) powdered aggregate testing by a capillary rise method; (4) polished aggregate testing by a sessile drop method; (5) function relationship formula fitting; and (6) surface energy calculation of raw aggregate. The method not only considers the influence of aggregate's own composition on the surface energy, but also considers the influence of the polishing treatment on the aggregate surface texture, analyzes actual surface texture conditions of the aggregate, and significantly improves the test accuracy by combining the sessile drop method and the capillary rise method. Moreover, it can replace vapor adsorption method to test the surface energy of aggregate, which greatly reduces the test cost and operation difficulty.

Abstract: Disclosed is a method for measuring surface energy of aggregates based on static drop method, comprising (1) aggregates grinding and pretreatment; (2) obtaining the surface texture index; (3) calculating the surface energy based on static drop method experiment; (4) fitting to obtain a functional relationship between the surface texture index and surface energy; (5) calculating the surface energy of the original aggregate. The method considers the influence of the grinding process on the surface texture of the aggregates when measuring the surface energy of the aggregates, which significantly improves the accuracy of the static drop method test. The static drop method can be used to replace the vapor adsorption method to test the surface energy of aggregate, and the low-cost optical contact angle instrument can replace the expensive magnetic suspension weight balance system to test the surface energy of aggregate, which greatly reduces the test cost.

Abstract: A method and system for selecting chemical reagents in measurement of asphalt surface energy are provided. The method includes: selecting different chemical reagents and obtaining contact angle values formed between the respective chemical reagents and asphalt slides; obtaining asphalt surface energy parameters corresponding to each of combinations of the chemical reagents according to the contact angle values; obtaining variation coefficients of the asphalt surface energy parameters corresponding to each of the combinations of the chemical reagents and selecting a group of combinations of the chemical reagents according to the variation coefficients; and obtaining numbers of abnormal values of asphalt surface energy components in the group of combinations of the chemical reagents and obtaining a target combination of the chemical reagents according to the numbers of the abnormal values. The combination of the chemical reagents with high stability of testing data can be selected by using the method.