Abstract: Disclosed is an analytical method for analyzing a test substance contained in a measurement sample, the method comprising: generating a data set based on a plurality of optical spectra acquired from a plurality of locations in the measurement sample; inputting the data set into a deep learning algorithm having a neural network structure; and outputting information on the test substance, on the basis of an analytical result from the deep learning algorithm.

Abstract: The present invention provides, among other things, QMAX card based assays in different forms for various analytes, offering simpler, fast, more sensitive assaying.

Abstract: A microdevice includes: a microchannel to which a measurement target solution containing a measurement target substance is introduced; an antibody being fixed to at least one sidewall surface of the microchannel and specifically binding to the measurement target substance; a fluorescence-labeled derivative being specifically bound to the antibody and being acquired by fluorescence-labeling the measurement target substance; and a light blocker blocking excitation light exciting fluorescent light radiated by the fluorescence-labeled derivative. The measurement target substance and the fluorescence-labeled derivative specifically bind to the antibody in a competitive manner, and the antibody is fixed to the sidewall surface of the microchannel in a state of specifically binding to the fluorescence-labeled derivative. The light blocker blocks the excitation light entering the fluorescence-labeled derivative specifically binding to the antibody.

Abstract: Compositions and methods are provided for detection, diagnosis and prognosis of Lyme disease (LD), including a method for confirming Borrelia spp. infection by contacting, in vitro, whole blood samples from subjects suspected of having LD with synthetic peptides comprising T-cell epitope-containing regions derived from Borrelia proteins that are expressed at different stages of Lyme disease, and indirectly detecting LD-specific activated T-cells by determining production of a T-cell immune response indicator (e.g., interferon-Y) in response to stimulation by the peptides.

Abstract: Disclosed is information related to determining Escherichia coli from a sample such as urine. According to the method, part of sample is admixed with a reagent including a lanthanide(III) ion, a transition metal ion, and a transition metal ion/E. coli-specific M13 phage, and another part of the sample is admixed with the reagent including lanthanide(III) ion, the transition metal ion a wild-type M13 phage. The signals derived from the lanthanide(III) ions in the admixtures were detected with time-gated luminescence measurement. The presence of E. coli in the sample was determined by comparing the lanthanide(III) ion signal in the presence transition metal ion/E. coli-specific M13 phage and the wild type M13 phage.

Abstract: An object of the present invention is to elucidate the cause of degradation of the reliability of detecting causative bacteria of environmental mastitis such as Escherichia coli, Klebsiella bacteria, Streptococcus bacteria, and CNS, and to provide a highly reliable detection means. Another object of the present invention is to provide a highly reliable detection means based on the immunochromatographic method, which enables quicker determination compared with the cultivation-based method, and a diagnosis kit using it.

Abstract: The present disclosure provides methods and kits for detecting Group A Streptococcus in biological samples. More particularly, the present disclosure provides methods for enhancing the specificity and sensitivity of Group A Streptococcus immunoassays by including N-propionyl-D-glucosamine, 2-N-butanoyl-D-glucosamide, Bis-(2-(D-2-deoxy-glucosaminyl))-PEG3-amide, m-PEG4-glucosamine, m-PEG6-glucosamine, or m-PEG10-glucosamine. The methods and kits disclosed herein are thus useful for reliable and early diagnosis of streptococcal infections in a subject.

Abstract: Methods, devices, systems, and apparatuses are provided for the image analysis of measurement of biological samples.

Abstract: The invention relates to the field of flow cytometry and more particularly to a panel of antibody reagents conjugated to fluorescent compounds. Provided are reagent compositions, comprising at least eight distinct fluorochrome-conjugated antibodies comprising a set of at least there identification antibodies for the identification of a leukocyte population of interest and at least four characterization antibodies for further characterization and/or classification of said leukocyte population. Also provided are kits and methods related to the reagent compositions.

Abstract: The invention relates to methods of assessing a patient's risk of developing Progressive multifocal leukoencephalopathy (PML).

Abstract: The invention relates to a method for prognosing ACS in a subject, the method comprising determining plasma MIF and Nt-proBNP (or BNP) concentrations in a sample from the subject, diagnosing ACS when the subject plasma concentrations are greater than a reference MIF and Nt-proBNP (or BNP) plasma concentration, and prognosing the magnitude of ACS from the subject plasma MIF and Nt-proBNP (or BNP) concentrations. Also provided is a method of treating ACS in a subject, a device, a kit, and a cardiac biomarker related to the methods of prognosing ACS.

Abstract: The present disclosure provides methods for blood-based examination useful to identify subjects with A? amyloidosis and/or to identify subjects who should or should not undergo further testing or treatment for A? amyloidosis, as well as methods for treating subjects diagnosed with A? amyloidosis by the methods disclosed herein.

Abstract: Magnetic cell levitation and cell monitoring systems and methods are disclosed. A method for separating a heterogeneous population of cells is performed by placing a microcapillary channel containing the heterogeneous population of cells in a magnetically-responsive medium in the disclosed levitation system and separating the cells by balancing magnetic and corrected gravitational forces on the individual cells. A levitation system is also disclosed, having a microscope on which the microcapillary channel is placed and a set of two magnets between which the microcapillary channel is placed. Additionally, a method for monitoring cellular processes in real-time using the levitation system is disclosed.

Abstract: Provided are methods of detecting the presence or amount of a dihydroxyvitamin D metabolite in a sample using mass spectrometry. The methods generally comprise ionizing a dihydorxyvitamin D metabolite in a sample and detecting the amount of the ion to determine the presence or amount of the vitamin D metabolite in the sample. In certain preferred embodiments the methods include immunopurifying the dihydroxyvitamin D metabolites prior to mass spectrometry. Also provided are methods to detect the presence or amount of two or more dihydroxyvitamin D metabolites in a single assay.

Abstract: Disclosed are a method and a reagent for quantifying HDL3 in a test sample without requiring laborious operations. The method for quantifying cholesterol in high-density lipoprotein 3 comprises reacting a test sample with one or more surfactants which react specifically with high-density lipoprotein 3, and quantifying cholesterol. When one surfactant is used, the surfactant is one selected from the group consisting of polyoxyethylene polycyclic phenyl ethers having an HLB of 12.5 to 15. When two or more surfactants are used, at least one of the surfactants is at least one selected from the group consisting of polyoxyethylene polycyclic phenyl ethers, and the two or more surfactants are combined so as to provide the total HLB of 12.5 to 15 of the combined surfactants.

Abstract: An inspection result of a specimen inspection automation system can be reported within a prescribed time, even if a large number of urgent specimens have been input. An instruction reception unit receives turn around time (TAT) information and a discharge instruction. The necessity of discharging a specimen for which the instruction was issued with the discharge instruction is determined and a discharge instruction unit creates a discharge destination and a conveyance route to the discharge destination for the specimen. A discharge mechanism discharges the specimen for which the instruction was issued. Even for a specimen which is caused to wait for processing due to the occurrence of specimen congestion and for which there is a risk of an inspection result reporting delay, an inspection result can be reported within a prescribed time by switching from automatic processing by the system to manual processing by an operator.

Abstract: The present invention relates to a system for performing assays on a solid phase to measure the level of analyte in a sample. Such a system may perform immunoassays using electrochemiluminescence (ECL) including a counterbalanced orbital shaking apparatus for assay consumables. The counterbalanced orbital shaking apparatus also incubates the assay consumables, and has a cooling system to maintain a preset temperature within the shaking apparatus.

Abstract: This substrate for sample analysis, which transfers a sample-containing liquid by means of rotation and analyzes a specific substance in a sample, is provided with: a space which holds the sample-containing liquid in a substrate having a rotary shaft; a reaction chamber having an inlet and an outlet connected to the space; and a dried reagent disposed in the space of the reaction chamber. The space has a first end and a second end spaced apart from each other in a circumferential direction. The inlet and the outlet are arranged at the first end and the second end, respectively. The space has a capillary portion, and a first non-capillary portion which is connected to the capillary portion, is located at the second end, has an opening, and extends in a radial direction. The outlet is connected to the outer peripheral side of the first non-capillary portion.

Abstract: A vibrating meter comprises a vibrating element with a longitudinal direction and a cross-sectional area in a plane perpendicular to the longitudinal direction. The vibrating element moves between a first position and a second position in a plane perpendicular to the longitudinal direction of the vibrating element. An electronics is operable to drive the vibrating element between the first position and the second position. A boundary element and the vibrating element define a fluid velocity boosting gap having an average gap distance between the boundary element and the vibrating element. The vibrating element includes a gap-facing perimeter section facing the fluid velocity boosting gap having a gap perimeter length. In embodiments, a ratio of the gap perimeter length to the average gap distance is at least 160. In further embodiments, the average gap distance is 0.25 mm or less.

Abstract: A method of determining density of a fluid within a system includes actuating a piston of a hydraulic cylinder at a target velocity. Additionally, the method includes determining differential pressure and volumetric flow rate of the fluid flowing through an orifice under actuation of the piston. The density of the fluid is determined based on the first differential pressure and the volumetric flow rate of the fluid, which is used by the system to regulate a mass flow rate of fluid within the system.

Abstract: The present invention relates to an apparatus and method for improving resolution and attitude estimation accuracy of an inertial measurement unit (IMU) sensor using deep learning. The apparatus for improving the resolution and the attitude estimation accuracy of the IMU sensor using deep learning according to the present invention includes an input unit configured to acquire data of an IMU sensor, a memory configured to store a performance improvement program of the IMU sensor, and a processor configured to execute the program, wherein the processor serves to improve accuracy and resolution of acceleration and angular velocity of the data of the IMU sensor by performing deep learning.

Abstract: An encoder device including: a position detection unit for detecting position information of a moving part; a magnet having a plurality of polarities along a moving direction of the moving part; an electric signal generation unit for generating an electric signal, based on a magnetic characteristic of a magnetosensitive part, the electric signal generation unit having the magnetosensitive part whose magnetic characteristic is changed by a change in magnetic field associated with movement of the moving part and a first magnetic body for guiding magnetic flux lines of the magnet toward the magnetosensitive part; and a second magnetic body for guiding magnetic flux lines of a part having one polarity of the magnet toward a part having other polarity of the magnet, the second magnetic body being disposed between the magnet and the magnetosensitive part.

Abstract: A triboelectric nanogenerator with slit effect (SE-TENG) and a self-driven wind speed and wind direction sensing device. The TENG includes a wind cavity with slit effect, a triboelectric layer, a hydroxyethyl cellulose (HEC) film, and indium tin oxide (ITO) electrodes. The wind cavity is provided with an inlet end and an outlet end. A layer of the electrode and a triboelectric layer are fixedly adhered to the upper surface and the lower surface of an inner wall of the wind cavity. The wind cavity is provided with a horizontally arranged support bar perpendicular to a wind direction in a middle close to the inlet end. The HEC film includes one end fixedly adhered to the support bar, and the other end extending freely toward the outlet end. The sensing device includes a plurality of SE-TENGs which are fixed on a circumference of a ring. The sensing device can be used in an agricultural environment.

Abstract: The present invention is directed to multiple arrangements of a self-disengaging pitot tube cover, which can be triggered by a plurality of different environmental conditions while the cover admits to a plurality of different latching mechanisms and opening configurations to guarantee the expeditious, automatic removal of the pitot tube cover while avoiding damage or contamination of the pitot tube itself.

Abstract: A testing apparatus for a semiconductor package includes a circuit board, testing patterns and a socket. The circuit board has a testing region and includes a plurality of testing contacts and a plurality of signal contacts distributed in the testing region. The testing patterns are embedded in the circuit board and electrically connected to the testing contacts, where each of the testing patterns includes a first conductive line and a second conductive line including a main portion and a branch portion connected to main portion. The first conductive line is connected to the main portion. The socket is located on the circuit board and comprising connectors electrically connected to the circuit board, wherein the connectors are configured to transmit electric signals for testing the semiconductor package from the testing apparatus.

Abstract: A conductive particle-disposed film of the present invention useful for a test probe unit for a continuity test of a fine-pitch continuity test object such as a semiconductor device is configured so that conductive particles are disposed in the surface direction of the elastomer film. The thickness of the elastomer film approximately coincides with the average particle diameter of the conductive particles. Ends of the conductive particles are positioned in the vicinity of respective outermost faces of both surfaces of the elastomer film. The same or different conductive particle-disposed films may be layered. A pressure-sensitive adhesive layer may be formed on at least one surface of the conductive particle-disposed film.

Abstract: A semiconductor device includes a leadframe having a first level and a second level. The semiconductor device includes a semiconductor die and a conductive alloy. The conductive alloy is between the semiconductor die and the first level of the lead frame. The conductive alloy is configured to be a current sense element. The semiconductor device further includes a first conductive post coupling the semiconductor die to the conductive alloy, a second conductive post coupling the semiconductor die to the conductive alloy, and a third conductive post coupling the semiconductor die to the second level of the lead frame. The second conductive post is configured to be a first sense terminal. The third conductive post is configured to be a second sense terminal.

Abstract: A method for testing a semiconductor device comprises obtaining an alignment signal between one or more auxiliary pins of a test probe and one or more auxiliary pads of a test key of the semiconductor device before a probing test of the semiconductor device. The obtaining of the alignment signal comprises: performing a vertical alignment between the one or more auxiliary pins of the test probe and the one or more auxiliary pads of the test key; and gradually reducing a vertical distance between the one or more auxiliary pins of the test probe and the one or more auxiliary pads of the test key for bringing into an electrical contact until the alignment signal there-between satisfies an alignment condition.

Abstract: A sensor device according to an embodiment of the present technology includes a sensor head and a measurement unit. The sensor head includes a first probe and a second probe, the first probe including a first antenna section used for transmission, the second probe including a second antenna section used for reception, the second probe being situated at a specified distance from the first probe and facing the first probe. The measurement unit includes a signal generator that generates a measurement signal that includes information regarding characteristics of a propagation of an electromagnetic wave in a medium between the first and second antenna sections.

Abstract: Probes for contacting electronic components include a plurality of compliant modules stacked in a serial configuration, which are supported by an exoskeleton or an endoskeleton which allows for linear longitudinal compression of probe ends toward one another wherein the compliant elements within the compliant modules include planar springs (when unbiased). Other probes are formed from single compliant modules or pairs of back-to-back modules that may share a common base. Module bases may include configurations that allow for one or both lateral alignment and longitudinal alignment of probes relative to array structures (e.g., array substrates, guide plates) or other modules they contact or to which they adhere.

Abstract: An information processing apparatus includes an extraction unit, a determination unit, a display control unit, and a display unit. The extraction unit is configured to extract, by predetermined pattern matching, candidate peaks in a certain arbitrary period of time from among at least one or more pieces of waveform data. The determination unit is configured to determine, from among the candidate peaks of the waveform data, a single peak based on a score related to the pattern matching. The display control unit is configured to output display information for displaying a position of the peak. The display unit is configured to display the display information.

Abstract: A sensored insulation plug for a separable connector in a MV/HV power distribution network of a national grid, operable to sense the MV/HV elevated voltage. The sensored insulation plug includes a plug body formed by a solidified insulating material, a contact piece, and a discrete coupling capacitor embedded in the insulating material and operable to harvest energy from the elevated voltage of the contact piece and optionally operable to superimpose a communication voltage signal over the elevated voltage. The sensored insulation plug further includes an integrated sensing capacitor, operable as a high-voltage capacitor in a sensing voltage divider for sensing the elevated voltage. The sensing capacitor comprises a high-voltage electrode comprising the coupling electrode and the contact piece, a tubular sensing electrode, and a dielectric comprising a portion of the insulating material.

Abstract: An apparatus for sensing current on a conductor of an electrical panel includes at least one sensing system, which comprises a ferromagnetic body and a sensor. The body can be formed of a ferro-magnetic material, such as for example steel. The ferromagnetic body can have two legs, which when placed on a load-side of the electrical panel, is configured to form, together with a back plane of the electrical panel, a magnetic path around the conductor. The ferromagnetic body comprises at least two parts with a first air gap therebetween along the magnetic path. The sensor, which is arranged in the first air gap, is configured to measure a current or other electrical property representative of current on the conductor based on the magnetic field across the first air gap.

Abstract: A current measurement device includes: four or more triaxial magnetic sensors arranged to have predefined positional relationships such that magnetism-sensing directions thereof are parallel to each other; and a calculator configured to calculate currents flowing through a pair of conductors to be measured, which are arranged in proximity to each other, based on detection results of the four or more triaxial magnetic sensors and the positional relationships between the four or more triaxial magnetic sensors, the currents flowing in mutually opposite directions.

Abstract: An electro-wetting on dielectric (EWOD) device, comprises first and second substrates defining a fluid chamber therebetween, a plurality of electro-wetting electrodes on the first substrate, and at least one first electrode and at least two second electrodes on the second substrate. The device further includes a current sensor for sensing a difference between (1) a first current flowing between the first electrode and one of the second electrodes via a first fluid package in the fluid chamber of the EWOD device and (2) a second current flowing between the first electrode and another of the second electrodes via a second fluid package in the fluid chamber of the EWOD device.

Abstract: Disclosed are a method and device for detecting system failure, a computer device, and a storage medium. The method includes obtaining, when a system to be detected is powered on or off, a real-time voltage oscillation signal acquired by a voltage sensor arranged in a detection circuits of the system. The detection circuit is a circuit where a source and drain of a switching device in the system are located. A degradation trend of the system is determined according to the real-time voltage oscillation signal and a reference voltage oscillation signal corresponding to the detection circuit of the system. A failure detection for the system is performed according to the degradation trend of the system.

Abstract: A current measurement apparatus for a three-phase inverter, according to one embodiment of the present invention, comprises: a current detection element connected to a lower end of one of three lower switches constituting the inverter; a current measurement unit measuring currents by using the current detection element and the two lower switches that are not connected to the current detection element; and a current correction unit for correcting, on the basis of the relationship between a first current value measured by means of the current detection element and second and third current values measured by means of the two lower switches, the second and third current values.

Abstract: Techniques, methods, systems and articles are described for monitoring electrical equipment of a power grid, identifying installation and/or configuration errors of such electrical equipment, and automatically correcting the errors. In one example, a system includes at least one processor and a plurality of sensors coupled to a multi-phase power line comprising a plurality of electrical cables that are each associated with a respective phase. The plurality of sensors are configured to generate sensor data that is indicative of one or more conditions of the electrical cables. The at least one processor is configured to receive the sensor data and determine, based at least in part on the sensor data, whether a sensor of the plurality of sensors is installed correctly. The at least one processor is also configured to perform an action in response to determining that the sensor is not installed correctly.

Abstract: Test system for an intelligent electronic device in an electric sub-station. Examples of a test switch unit are described. Each test switch unit may be utilized for opening of the trip circuit, the shorting of the CT and subsequently isolation of the VT circuits, respectively. Once the trip circuits have been opened, and the CT/VT circuits have been shorted and isolated, respectively, the IED may be tested by providing the appropriate test signals.

Abstract: Calculating energy loss during an outage, including: determining that windspeed data indicating device windspeeds measured at an energy generating device are unavailable within a particular time duration; receiving meteorological data associated with a site location of the energy generating device, the meteorological data including meteorological windspeed data collected within the particular time duration; and predicting one or more estimated device windspeeds at the energy generating device during the particular time duration based on the meteorological data using a trained model for the energy generating device, the trained model being trained using a machine learning algorithm that utilizes historical meteorological windspeed data associated with the site location collected during a previous time duration and corresponding historical device windspeed data measured at the energy generating device during the previous time duration.

Abstract: A method of determining a spectrum of energies of individual quanta of radiation received in a radiation detector is disclosed. Spectrum sensitive statistics are computed from a time series of digital observations from the radiation detector, defining a mapping from a density of amplitudes of the pulses to the spectrum sensitive statistics. The spectrum is determined by estimating the density of amplitudes of the pulses by applying an inversion of the mapping to the spectrum sensitive statistics. The statistics may be based on a first set of nonoverlapping time intervals of constant length L at least as long as a duration of the pulses without regard to entirety of clusters of the pulses; and a second set of nonoverlapping time intervals of constant length L1 less than L also without regard to entirety of clusters of the pulses. A method of estimating count rate is also disclosed.

Abstract: A method for detecting low-frequency oscillations, in particular subsynchronous resonances, in an electrical supply grid is provided. The grid has a line voltage with a rated line frequency. The method comprises recording first and second series of measurements each for performing a frequency analysis (FFT). The method includes performing a lower frequency analysis for the first series for a lower frequency range and forming a lower amplitude spectrum. The method includes performing an upper frequency analysis for the second series for an upper frequency range and forming an upper amplitude spectrum. The method includes testing whether a low-frequency oscillation component can be identified in the lower amplitude spectrum, and testing whether a low-frequency oscillation component can be identified in the upper amplitude spectrum, where the presence of a low-frequency oscillation is assumed when a low-frequency oscillation component is identified in at least one of the lower and upper amplitude spectra.

Abstract: Systems and methods are described herein for charge-based capacitor measurement. The system includes a first pseudo-inverter circuit and a second pseudo-inverter circuit. The system also includes a control circuit coupled between the first inverter circuit and the second inverter circuit. The control circuit is configured to generate independent and non-overlapping control signals for the first pseudo-inverter circuit and the second pseudo-inverter circuit. A shielding metal is coupled to the first pseudo-inverter circuit, the second pseudo-inverter circuit, and the control circuit. The shielding metal is configured to dissipate parasitic capacitance of at least one of the first pseudo-inverter circuit or the second pseudo-inverter circuit. A device under test is coupled to each of the first inverter circuit and the second inverter circuit.

Abstract: Systems, methods, and circuits for determining a duty cycle of a periodic input signal are provided. A delay element is configured to delay the periodic input signal based on a digital control word. A digital circuit is configured to generate a first digital control word used to delay the periodic input signal a first amount of time corresponding to a period of the periodic input signal, generate a second digital control word used to delay the periodic input signal a second amount of time corresponding to a portion of the periodic input signal having a logic-level high value, and generate a third digital control word used to delay the periodic input signal a third amount of time corresponding to a portion of the periodic input signal having a logic-level low value. A controller is configured to determine the duty cycle based on the first, second, and third digital control words.

Abstract: Provided are a directional pattern calculation method and apparatus for a beam pointing adjustable antenna. In the design method, key control factors are quantized, for example, a arrangement and combination modes for a plurality of slot units and wave-controlled codes for conducting and cut-off states of a slot unit, and different combinations of slot units and a far-field directional pattern of a controlled array antenna are evaluated, so that electrical performance indicators of the array antenna can be further evaluated. Weighting calculation is implemented for a directional pattern of a beam pointing adjustable antenna. Key information such as a form of a slot unit and a arrangement and combination modes for slot units can be globally optimized.

Abstract: A device for testing faults and non-conformities in a waveguide, such as a coaxial cable or a coaxial line such as those used in radio and television broadcast towers or in cellphone towers. The device is arranged for injecting a signal in the waveguide and for receiving a backscattered signal, characterizing a nonconformity or a fault. The injected signal may be a digital UWB signal.

Abstract: An insulation resistance detection circuit is coupled to a positive end and a negative end of a DC power source, and is used to detect a positive insulation resistance between the positive end and a ground point and detect a negative insulation resistance between the negative end and the ground point. A detection unit sets a first estimated resistance and a second estimated resistance, and acquires a first voltage based on turning on the switch and acquires a second voltage based on turning off the switch. The detection unit calculates a third voltage and a fourth voltage according to the first estimated resistance and the second estimated resistance so as to detect the positive insulation resistance and the negative insulation resistance when the third voltage is equal to the first voltage and the fourth voltage is equal to the second voltage.

Abstract: An air blow guide member 100 for cooling an electrical component accommodated in an electrical component socket 10 is configured to guide flowing air K supplied from a ventilation unit 3 toward the electrical component socket 10. Further, a test device unit 2 including the air blow guide member 100 and the electrical component socket 10 is configured so that the flowing air K supplied from the air ventilation unit 3 is guided toward the electrical component socket 10 by the air blow guide member 100. Further, a test device includes a plurality of the test units 2 arranged from an upstream side toward a downstream side of the flowing air K supplied from the ventilation unit 3.

Abstract: System and method, in the field of device control, for detecting and processing one or more deviations from an acceptable electrical behavior in an electrical device are provided here. The system may include a sampling unit for receiving at least one activity indication, a storage to store acceptable values related to the acceptable electrical behavior, an active time measurement unit to receive the activity indication and measure an active time duration, an inactive time measurement unit to receive the activity indication and measure an inactive time duration and a deviation processor to compute values derived from the activity indication, the active time duration and the inactive time duration, detect and analyze one or more deviations between the acceptable values and the derived values.

Abstract: A socket for an electrical component including a socket main body 11 including a contact pin, an operating member 12 provided in the socket main body 11 in a vertically movable manner and urged upward, an opening/closing body 14 provided in the socket main body 11 as being capable of being opened and closed and configured to press an electrical component arranged in the socket main body 11 by being closed, an opening/closing link mechanism 15 connected to the opening/closing body 14 with a base end part 15a thereof connected to the socket main body 11 and the operating member 12 to close the opening/closing body 14 when being lifted by the operating member 14, and a depression mechanism 16 which depresses a leading end part 15b of the opening/closing link mechanism 15 when the opening/closing body 14 is closed.