Abstract: Disclosed is a method for evaluating the underground hydrogen storage (UHS) capacity in porous media of depleted gas reservoirs using CO2 as cushion gas, including the following steps: S1: obtaining physical parameters required for UHS capacity evaluation based on geological and production data of the target depleted gas reservoir; S2: calculating the cap-rock breakthrough pressure and fault-slip pressure of the UHS based on the cap and fault properties of the target depleted gas reservoir to further estimate the highest operating pressure of the UHS; S3: developing the H2—CO2—CH4 multi-component material balance equation in underground porous media by considering the dissolution of three components in formation water; S4: substituting the parameters obtained from S1 and S2 into the multi-component material balance equation to calculate the proportion of different gas components in the pore space to finally determine the UHS capacity of the target depleted gas reservoir.

Abstract: In one aspect, the invention provides a sampling apparatus for taking a representative milk sample in a predetermined quantity range from a conveying line in which milk is conveyed at conveying intervals of unknown length.

Abstract: An instrument panel has an aperture in which a display may be arranged. The instrument panel further comprises a rotatable display mechanism. The mechanism comprising at least three display surfaces supported on a rotatable support. A first display surface comprises a touch sensitive display screen; a second display surface comprises at least one dial or gauge; and a third display surface comprises a trim element. The support is mounted for rotation with respect to a mount and the mount is movable away from and towards the aperture in the instrument panel. In use each display surface may be arranged in the aperture. To change from one display surface to another display surface, the mount is moved away from the instrument panel, the support is rotated and the mount is then moved back towards the instrument panel so as to align another display surface in the aperture.

Abstract: The present invention relates to a maritime distress signal transmission device which transmits a distress signal to an arbitrary rescue station to rescue a person in distress by transmitting a distress signal of the person in distress at sea wearing a life jacket and precise location information based on the Global Positioning System (GPS) to the rescue station as audible sound, and the maritime distress signal transmission device includes a holder-cradle which is coupled to the life jacket of the person in distress by a clip and a main body which is coupled to the holder-cradle and transmits the rescue signal to an arbitrary receiver using a preset frequency band.

Abstract: Tools, methods, and systems for evaluating a demulsifier performance from an emulsion mixture are described. The systems include a measuring instrument including a body with an open end, a cover attachable to the body, a sample holder sized to hold the emulsion mixture and to be received inside the body, the body and the cover define a sealable chamber; a sensor system positioned inside the sealable chamber an environmental control system positioned to enclose the sealable chamber; a data acquisition and processing system is in electronic communication with the sealable chamber, the sensor system, and the environmental control system. The sensor system includes a handle attached to and extruding from the cover of the measuring instrument; and a sensor loaded onto the handle, sized to be submerged inside the emulsion mixture of the sample holder, and operable to measure performance of the demulsifier.

Abstract: The present invention discloses a circulating multidimensional liquid chromatography and application thereof. The liquid chromatography comprises an infusion device, a sampling device, a collecting-resampling device, a chromatographic column switching device and a detecting device which are connected sequentially, wherein the collecting-resampling device comprises a collecting valve and a sample ring, and the collecting valve is connected with the sample ring; the sampling device is successively connected with the collecting valve and the chromatographic column switching device; the detecting device is also connected with the collecting valve; and the collecting valve is a three-slot three-position multi-way valve.

Abstract: The present disclosure relates to a crude oil flow metering device, which includes a measuring part and a metering part; the measuring part includes a measuring tube and a float assembly; the float assembly is in-built in the measuring tube, and includes a float and a float connection rod integrally connected with the float; an end of the float connection rod is connected to a detection part; the detection part protrudes out of the measuring tube when the float rises from a bottom end; the metering part includes a position detection module and a processing module; the position detection module is arranged in a detection cavity located above the measuring tube and formed by a first housing; when the detection part at the end of the float connection rod extends into the detection cavity, the position detection module detects a position of the detection part at the end of the float connection rod to obtain a float height detection signal; and the processing module calculates a flow rate of measured crude oil acc

Abstract: A method is provided for detecting leaks in a disposable medical fluid cassette that includes a base and a flexible membrane attached to the base in such a way that the base and the flexible membrane cooperate to at least partially form a fluid passageway. The method includes applying a first force to the flexible membrane, measuring a first physical property of a system that includes the medical fluid cassette a medical fluid pumping machine, removing the first force from the flexible membrane, applying a second force to the flexible membrane, measuring a second physical property of the system, and determining whether the medical fluid cassette leaks based on a comparison of the first physical property and the second physical property.

Abstract: Fluid holdups within a downhole sampling tool are identified by comparing high- and low-resolution measurements of fluid samples.

Abstract: A smell detection device includes an ion sensor having a sensitive film and outputting an output signal in accordance with a potential change of the sensitive film, a substance adsorption film disposed on the sensitive film and changing its state by adsorbing a smell substance to be detected to cause the potential change of the sensitive film, and an adjuster acquiring the output signal of the ion sensor and adjusting a drive signal for driving the ion sensor to reduce an offset from a predetermined reference value in the output signal.

Abstract: The present disclosure provides a wireless vehicle leveling system. The wireless vehicle leveling system comprises a base module and a remote module. The base module comprising a plurality of extendable legs incorporating one or more first LED indicators. The remote module is configured to perform wireless communication with the base module. The remote module comprising one or more second LED indicators. The plurality of extendable legs is extendable along predefined directions and is configured to capture a level data associated with a vehicle along each of the predefined directions. Both the one or more first LED indicators and the one or more second LED indicators are configured to simultaneously indicate a leveling status of the vehicle.

Abstract: Systems and methods for detecting leaks in flexible packets with a test bed, a pressure chamber to apply a first pressure and a second pressure to the packet, producing a first volume and second volume for the packet. An illumination source and an illumination detector to produce a first image dataset of the packet at the first pressure and a second image dataset of the packet at the second pressure, a processor connected to the illumination detector to receive the first and second image datasets and determine the first volume and the second volume and use the first volume and the second volume to determine a change in volume, compare the change of volume with a threshold and when the change of volume is greater than the threshold determine the packet is leak-free and when the change of volume is less than the threshold determines the packet has a leak.

Abstract: An optical reading device for a pointer instrument which has a pointer and a scale face or dial with different degrees of reflectance in each case, includes an illumination device for illuminating the scale face or dial and a plurality of light sensor elements which are arranged in a circular arc about the rotational axis of the pointer in order to detect the light of the illumination device reflected back by the scale face or dial, wherein the illumination device is configured to uniformly illuminate the scale face or dial and each light sensor element is configured with an isosceles triangle outline, where each light sensor element is offset with respect to one another by half of the base width in the circumferential direction of the circular arc.

Abstract: The present disclosure generally relates to a standalone gas extraction and detection system comprising a gas extraction chamber operable to receive a wellbore fluid and a carrier gas; a gas detection chamber in fluid communication with the gas extraction chamber, the gas detection chamber comprising reflective surfaces operable to receive infrared radiation (IR) and an extracted gas sample from the gas extraction chamber; an open-path detector operable to detect the IR in the gas detection chamber; and a shaft extending through the gas extraction chamber and the gas detection chamber of the standalone gas extraction and detection system.

Abstract: A bicycle bell includes a fixing seat on a pipe clamp, a bell cover, and an elastic support. The elastic support has two curved arms and a horizontal section. The two curved arms extend upward from two ends of the horizontal section. The two curved arms have engaging ends extending outwardly and laterally. The horizontal section is mounted to the fixing seat. The engaging ends are connected to the bell cover in a snap-on manner. In the bicycle bell, the fixing seat and the bell cover are assembled through the elastic support. The elastic support is a relatively flexible medium with poor energy conductivity, so that to the vibration amplitude of the bell cover is large, the energy loss is small, and the vibration is longer and louder.

Abstract: Provided is a force sensor capable of expanding the application range of an electrically conductive member having an isotropic gauge factor. The electrically conductive member is placed in a designated latitude region on a main face of the strain body to annularly extend around a pole and to be divided at a position. The designated latitude region is a latitude region in which the magnitude of the sum of a first strain amount in the longitude line direction of the strain body relative to the pole and a second strain amount in the latitude line direction is not less than a reference value when a force having a component in the perpendicular direction to the main face is applied to the strain body.

Abstract: A case configured to receive a plurality of mechanical watch movements in the wound state, each movement being housed inside a compartment, configured to receive and maintain the movement according to a predefined orientation. In this position, the winding buttons of the movements are positioned facing respective microphones which are mounted inside the case. The microphones are configured such that they cancel the noises detected, such that the acoustic measurements of each of the movements are essentially not disturbed by the noises produced by the adjacent movements. Also, a method for testing a plurality of mechanical movements installed in the case, and to a testing system which includes the case. The movements are measured by a plurality of cycles of consecutive and successive measurement periods.

Abstract: A measurement device and method for measuring concrete curing. The measurement device includes a closed air-filled chamber, chamber walls defining a closed air-filled chamber space inside the closed air-filled chamber, and a pressure sensor provided inside the air-filed chamber space of the closed air-filled chamber. The chamber walls are arranged air and water vapour permeable allowing air and water vapour flow into the closed air-filled chamber space and out of closed air-filled chamber space.

Abstract: A laser level meter, comprising a housing, wherein a laser assembly is mounted on the housing, the lower end portion of the housing is further provided with an end cover, the end cover is recessed towards the interior of the housing to form a cavity, and an air suction port is provided in the cavity. The laser level meter further comprises a suction device arranged in the housing, wherein the suction device comprises a fan, and the fan rotates so as to suck air between the cavity and a mounting surface of the laser level meter from the air suction port.

Abstract: Embodiments of the present disclosure provide a method and apparatus for determining a pressure reference value, and a chip and an electronic device. The method includes: consecutively acquiring N pressure signals by a pressure sensor; acquiring consecutive N pressure values on the basis of the N pressure signals; and determining a latest pressure reference value on the basis of the consecutive N pressure values and time characteristics of the consecutively acquired N pressure signals; wherein each of the pressure values is a difference between a sampling value corresponding to a pressure signal and the pressure reference value, and the consecutively acquired N pressure signals are acquired within a duration where a pressure is applied to the pressure sensor once, N being a positive integer greater than 0.