Abstract: An aeronautical aluminum alloy minimum-quantity-lubrication milling machining device includes a machine tool worktable and spindle connected with a machine tool power system. The spindle is connected with a tool holder that is fixed with a cutting tool. The machine tool worktable is provided with a machine tool fixture, the tool holder is connected with a minimum-quantity-lubrication mechanism, the machine tool fixture includes a fixture body that is fixedly provided with a limit block for contact with two adjacent side surfaces of a workpiece, the fixture body is provided with a plurality of clamping elements capable of pressing the workpiece against an upper surface of the fixture body, and a top of the clamping element is provided with a detection member for detecting a relative position between the clamping element and the spindle. The device can avoid interference and contact between a nozzle and the clamping element.

Abstract: The application relates to an anti-back-transfer intake structure of a rotating detonation combustion chamber including a Tesla valve communicating with the rotating detonation combustion chamber and arranged at an inlet of the rotating detonation combustion chamber. The Tesla valve includes a casing and a flow passage, the casing is coaxially connected with an outer wall of the rotating detonation combustion chamber, the flow passage is arranged in the casing, and the flow passage has an inlet end for introducing air, and an outlet end connected with an annular passage of the rotating detonation combustion chamber.

Abstract: A light-folding element includes an object-side surface, an image-side surface, a reflection surface and a connection surface. The reflection surface is configured to reflect imaging light passing through the object-side surface to the image-side surface. The connection surface is connected to the object-side, image-side and reflection surfaces. The light-folding element has a recessed structure located at the connection surface. The recessed structure is recessed from the connection surface an includes a top end portion, a bottom end portion and a tapered portion located between the top end and bottom end portions. The top end portion is located at an edge of the connection surface. The tapered portion has two tapered edges located on the connection surface. The tapered edges are connected to the top end and bottom end portions. A width of the tapered portion decreases in a direction from the top end portion towards the bottom end portion.

Abstract: An electrically-driven vibratory hammer is provided, which has a power supply, is wirelessly controlled, can increase the vibration amplitude and can detect the data of the vibratory hammer in real time. Through the arrangement of storage batteries, workers can also directly work through the built-in storage batteries during construction in some remote areas, without laying additional lines, and the cost is reduced. Furthermore, a movable toothed plate previously driven by a hydraulic cylinder is changed into a clamping electric cylinder capable of directly working through the storage batteries, so that a pile body can be directly clamped without an external hydraulic pump station during working. Through the improvement, the workers can directly work without additionally laying basic equipment during construction in construction sites with incomplete facilities, the construction period is shortened, the construction cost is saved, intelligent control is achieved.

Abstract: The application relates to an assembly for controlling detonation wave mode of a rotating detonation combustion chamber, which includes an inner barrel, an outer plate and at least one sectoral direction-changing block. The outer plate is sleeved outside the inner barrel. An annular cavity is formed between the outer plate and the inner barrel. At least one groove is arranged on one side of the outer plate close to the inner barrel. The groove wall comprises an arc edge and a straight edge. The groove is connected with the annular cavity. The sectoral direction-changing blocks are arranged in the grooves in one-to-one correspondence. An arc edge of the sectoral direction-changing block is positioned far away from the inner barrel.

Abstract: A method for preparing 1,3-diacylglycerol by immobilizing Sn-2 lipase. The present application obtains the Sn-2 lipase adsorbed by the macroporous resin by adsorbing the Sn-2 lipase on the resin, cross-links and immobilizes the Sn-2 lipase, and obtains 1,3-diglycerol by one-step hydrolysis with the lipase. The method improves the utilization times, hydrolysis activity and specificity of the Sn-2 lipase during hydrolysis, and determines the optimal parameters by improving the experimental conditions. This makes up for the shortcomings of immobilization and realizes the one-step hydrolysis of 1,3-diacylglycerol. Under optimal conditions, the hydrolase activity of immobilized lipase CAL-A is 1937.86U/g, and the immobilization rate can reach 94.49%, and has good operational stability and storage stability. Secondly, the DAG content can reach 36.

Abstract: An electrically-driven vibratory hammer is provided, which has a power supply, is wirelessly controlled, can increase the vibration amplitude and can detect the data of the vibratory hammer in real time. Through the arrangement of storage batteries, workers can also directly work through the built-in storage batteries during construction in some remote areas, without laying additional lines, and the cost is reduced. Furthermore, a movable toothed plate previously driven by a hydraulic cylinder is changed into a clamping electric cylinder capable of directly working through the storage batteries, so that a pile body can be directly clamped without an external hydraulic pump station during working. Through the improvement, the workers can directly work without additionally laying basic equipment during construction in construction sites with incomplete facilities, the construction period is shortened, the construction cost is saved, intelligent control is achieved.

Abstract: The application relates to an anti-back-transfer intake structure of a rotating detonation combustion chamber including a Tesla valve communicating with the rotating detonation combustion chamber and arranged at an inlet of the rotating detonation combustion chamber. The Tesla valve includes a casing and a flow passage, the casing is coaxially connected with an outer wall of the rotating detonation combustion chamber, the flow passage is arranged in the casing, and the flow passage has an inlet end for introducing air, and an outlet end connected with an annular passage of the rotating detonation combustion chamber.

Abstract: The application relates to a mode control flow channel structure of a rotating detonation combustion chamber, which includes an inner barrel, an outer plate and at least one sectoral direction-changing block. The outer plate is sleeved outside the inner barrel. An annular cavity is formed between the outer plate and the inner barrel. At least one groove is arranged on one side of the outer plate close to the inner barrel. The groove wall comprises an arc edge and a straight edge. The groove is connected with the annular cavity. The sectoral direction-changing blocks are arranged in the grooves in one-to-one correspondence. An arc edge of the sectoral direction-changing block is positioned far away from the inner barrel.

Abstract: Provided herein are kits, compositions and methods for biomarker detection, and the use of relative or absolute levels of these markers for non-invasive detection of stress and/or relaxation levels in human subjects. In particular, the present invention relates to cortisol, isomer and metabolite markers for stress and/or relaxation levels.

Abstract: The present invention relates to a method of recycling mother liquid of a PTA refining unit. The present invention recycles waste heat and PT acids of a PTA mother liquid to effectively utilize heat in the PTA mother liquid, solves influence of crystallization of the PT acids on subsequent system, reduces pollution to the environment, and can produce huge economic benefits by using high efficient multistage flash distillation technology, low temperature cogeneration technology, heat pump heating and cooling technology, and low temperature crystallization technology.

Abstract: The present invention relates to an improved variant of a D-psicose 3-epimerase and its uses.

Abstract: The present invention relates to a method of recycling mother liquid of a PTA refining unit. The present invention recycles waste heat and PT acids of a PTA mother liquid to effectively utilize heat in the PTA mother liquid, solves influence of crystallization of the PT acids on subsequent system, reduces pollution to the environment, and can produce huge economic benefits by using high efficient multistage flash distillation technology, low temperature cogeneration technology, heat pump heating and cooling technology, and low temperature crystallization technology.

Abstract: An electrical pulse stimulation system includes a pulse generator, a first lead electrically connected to the pulse generator, and a second lead electrically connected to the pulse generator. The pulse generator is configured to deliver a left sacral nerve electrical pulse stimulation signal to the first lead and deliver a right sacral nerve electrical pulse stimulation signal to the second lead. The pulse generator is further configured to determine and adjust a stimulation quantity proportion of the left sacral nerve electrical pulse stimulation signal and the right sacral nerve electrical pulse stimulation signal according to a sacral nerve data of a patient.

Abstract: Provided herein are kits, compositions and methods for biomarker detection, and the use of relative or absolute levels of these markers for non-invasive detection of stress and/or relaxation levels in human subjects. In particular, the present invention relates to cortisol, isomer and metabolite markers for stress and/or relaxation levels.

Abstract: The present invention relates to an improved variant of a D-psicose 3-epimerase and its uses.

Abstract: The disclosure relates to an electrical stimulation therapy method. The method includes applying a variable frequency stimulation pulse to target nerve tissue of the patient suffering from dysfunction of a nerve circuit in the brain selected from the group consisting of motor circuit, associative circuit and limbic circuit, wherein the variable frequency stimulation pulse comprises at least two kinds of electrical stimulation pulse trains at different frequencies; and each of the at least two kinds of alternate electrical stimulation pulse trains in each of the plurality of pulse train periods has a duration in a range from about 0.1 seconds to about 60 minutes. The target nerve tissue is a part of the nerve circuit. The different frequencies of the electrical stimulation pulse trains are in a range from about 10 Hz to about 250 Hz.

Abstract: A method and device are provided for purifying and recycling water vapor from a coal drying process. Included are a temperature-lowering and dehumidifying process, a flash distillation stripping process, and a vacuum condensing process. A condensing tower receives a temperature-lowered exhaust gas with high humidity from a cooling tube and a condensed water of 5˜60° C. from a flash distillation tank, allowing the exhaust gas and the condensed water to contact each other in a vapor-liquid reverse manner, to lower the temperature and dehumidify the exhaust gas. The flash distillation tank performs a vacuum flash distillation to the condensing water pumped therein from the condensing tower. Water vapor of 5˜60° C. evaporated through flash distillation in the flash distillation tank enters into the demisting washer to be dehumidified and then is condensed. The condensed water in the vapor condenser is transferred into a recycled water tank. Non-condensable gas is discharged out.

Abstract: The present invention relates to an improved variant of a D-psicose 3-epimerase and its uses.