Abstract: Methods and systems for training a model include pre-training a backbone model with a pre-training decoder, using an unlabeled dataset with multiple distinct sensor data modalities that derive from different sensor types. The backbone model is fine-tuned with an output decoder after pre-training, using a labeled dataset with the multiple modalities.

Abstract: A driving device, a surgical instrument, and an operation method of the surgical instrument. The driving device is driven by a power assembly. The driving device includes a first driving assembly and a first motion conversion assembly. The first motion conversion assembly includes a first effective stroke structure and a first idle stroke structure. The driving device has a first state and a second state. In the first state, the power assembly drives the first effective stroke structure by the first driving assembly; and in the second state, the power assembly is coupled with the first idle stroke structure by the first driving assembly.

Abstract: A driving device, a surgical instrument, and an operation method of the surgical instrument. The driving device is driven by a power assembly. The driving device comprises a first driving assembly and a first motion conversion assembly. The first driving assembly comprises a first effective stroke structure and a first idle stroke structure. The driving device has a first state and a second state. In the first state, the power assembly is engaged with the first effective stroke structure, and the first effective stroke structure drives the first motion conversion assembly; in the second state, the power assembly is coupled with the first idle stroke structure, and the first motion conversion assembly is disengaged from the driving of the power assembly.

Abstract: A driving device, a surgical instrument, and an operation method of the surgical instrument. The driving device is driven by a power assembly. The driving device comprises a first driving assembly and a first motion conversion assembly. The first driving assembly comprises a first effective stroke structure and a first idle stroke structure. The driving device has a first state and a second state. In the first state, the power assembly is engaged with the first effective stroke structure, and the first effective stroke structure drives the first motion conversion assembly; in the second state, the power assembly is coupled with the first idle stroke structure, and the first motion conversion assembly is disengaged from the driving of the power assembly.

Abstract: A footrest driving apparatus includes a seat frame (2), a footrest member (4), a driving mechanism (3) and a footrest linkage mechanism (5) connected to the seat frame (2), the driving mechanism (3) and the footrest member (4). The seat frame (2) has two mounting boards (21), and each mounting board (21) has a curved guide slot (22). The driving mechanism (3) has two driving arms (32). Each driving arm (32) has a guide rod (33) matching with a corresponding curved guide slot (22), and a pin (34) rotatably connected with the corresponding mounting board (21). The guide rod (33) of each driving arm (32) correspondingly moves between a first position and a second position in the curved guide slot, allowing the driving mechanism (3) to drive the footrest linkage mechanism (5) to move the footrest member (4) between a stowed position and a reclined position.

Abstract: A self-locking mechanism includes a frame (1), a transmission member (3), a rotating member (2), and a locking rod (4), forming a four-bar linkage mechanism. A supporting member (6) is movable relative to the frame (1). The rotating member (2) has an upper end rotatably connected with the supporting member (6), a lower end provided with a guide slot (22), and a middle portion therebetween. The transmission member (3) has two ends rotatably connected with the frame (1) and the middle portion respectively. The locking rod (4) has an upper end rotatably connected with the frame (1), and a lower end provided with a guide rod (41) movable in the guide slot. The locking rod (4) is rotatable between multiple positions. When the locking rod (4) is in a locking position, the guide rod (41) abuts against the guide slot to prevent the supporting member (6) from moving upward.

Abstract: A footrest driving apparatus includes a seat frame (2), a footrest member (4), a driving mechanism (3) and a footrest linkage mechanism (5) connected to the seat frame (2), the driving mechanism (3) and the footrest member (4). The seat frame (2) has two mounting boards (21), and each mounting board (21) has a curved guide slot (22). The driving mechanism (3) has two driving arms (32). Each driving arm (32) has a guide rod (33) matching with a corresponding curved guide slot (22), and a pin (34) rotatably connected with the corresponding mounting board (21). The guide rod (33) of each driving arm (32) correspondingly moves between a first position and a second position in the curved guide slot, allowing the driving mechanism (3) to drive the footrest linkage mechanism (5) to move the footrest member (4) between a stowed position and a reclined position.

Abstract: A vacuum cleaner, which is a portable vacuum cleaner, including a tank body, a head portion disposed above the tank body, and a battery connection portion that is disposed at the head portion and is capable of connecting to a battery. A part of an upper end portion of the tank body has a bent shape or a curved shape, and the rest part of the upper end portion of the tank body has a shape neither bending inward nor curved inward. The vacuum cleaner may further include a battery connection portion disposed at the head portion and a brushless motor disposed at the head portion. The vacuum cleaner is easy to assemble, portable, convenient in checking the battery level, waterproof and has a good performance of drainage, high efficiency in dust vacuuming, small size and compact structure, light weight, and improved service period.

Abstract: A self-locking mechanism includes a frame (1), a transmission member (3), a rotating member (2), and a locking rod (4), forming a four-bar linkage mechanism. A supporting member (6) is movable relative to the frame (1). The rotating member (2) has an upper end rotatably connected with the supporting member (6), a lower end provided with a guide slot (22), and a middle portion therebetween. The transmission member (3) has two ends rotatably connected with the frame (1) and the middle portion respectively. The locking rod (4) has an upper end rotatably connected with the frame (1), and a lower end provided with a guide rod (41) movable in the guide slot. The locking rod (4) is rotatable between multiple positions. When the locking rod (4) is in a locking position, the guide rod (41) abuts against the guide slot to prevent the supporting member (6) from moving upward.

Abstract: A microdevice for monitoring a target analyte is provided. The microdevice can include a field effect transistor comprising a substrate, a gate electrode, and a microfluidic channel including graphene. The microfluidic channel can be formed between drain electrodes and source electrodes on the substrate. The microdevice can also include at least one aptamer functionalized on a surface of the graphene. The at least one aptamer can be adapted for binding to the target analyte. Binding of the target analyte to the at least one aptamer can alter the conductance of the graphene.

Abstract: A MEMS-based calorimeter includes a reference channel, a sample channel, and a thermopile configured to measure a temperature differential between the reference channel and a sample channel. The reference channel and the sample channel each include a passive mixer such as a splitting-and-recombination micromixer. The passive mixer can be formed by a first set of channels in a first layer and a second set of channels in a second layer. Methods for fabricating the MEMS-based calorimeter and methods of using the calorimeter to measure thermodynamic properties of chemical reactions are also provided.

Abstract: A microdevice for monitoring a target analyte is provided. The microdevice can include a field effect transistor comprising a substrate, a gate electrode, and a microfluidic channel including graphene. The microfluidic channel can be formed between drain electrodes and source electrodes on the substrate. The microdevice can also include at least one aptamer functionalized on a surface of the graphene. The at least one aptamer can be adapted for binding to the target analyte. Binding of the target analyte to the at least one aptamer can alter the conductance of the graphene.

Abstract: A vacuum cleaner, which is a portable vacuum cleaner, including a tank body, a head portion disposed above the tank body, and a battery connection portion that is disposed at the head portion and is capable of connecting to a battery. A part of an upper end portion of the tank body has a bent shape or a curved shape, and the rest part of the upper end portion of the tank body has a shape neither bending inward nor curved inward. The vacuum cleaner may further include a battery connection portion disposed at the head portion and a brushless motor disposed at the head portion. The vacuum cleaner is easy to assemble, portable, convenient in checking the battery level, waterproof and has a good performance of drainage, high efficiency in dust vacuuming, small size and compact structure, light weight, and improved service period.

Abstract: A microdevice for monitoring a target analyte is provided. The microdevice can include a field effect transistor comprising a substrate, a gate electrode, and a microfluidic channel including graphene. The microfluidic channel can be formed between drain electrodes and source electrodes on the substrate. The microdevice can also include at least one aptamer functionalized on a surface of the graphene. The at least one aptamer can be adapted for binding to the target analyte. Binding of the target analyte to the at least one aptamer can alter the conductance of the graphene.

Abstract: An array substrate, a manufacturing method thereof and a display device are disclosed. The array substrate comprises a plurality of pixel unit regions each including a thin-film transistor (TFTs) and a pixel electrode. A first insulating layer provided with a first through hole and a second through hole is formed between an active layer of the TFT and the pixel electrode. A source electrode of the TFT is connected with the active layer through the first through hole. A drain electrode of the TFT is lapped onto the pixel electrode and connected with the active layer through the second through hole. The array substrate can prevent the oxidization of metal such as copper in the process of patterning a transparent conductive film.

Abstract: A MEMS-based calorimeter includes a reference channel, a sample channel, and a thermopile configured to measure a temperature differential between the reference channel and a sample channel. The reference channel and the sample channel each include a passive mixer such as a splitting-and-recombination micromixer. The passive mixer can be formed by a first set of channels in a first layer and a second set of channels in a second layer. Methods for fabricating the MEMS-based calorimeter and methods of using the calorimeter to measure thermodynamic properties of chemical reactions are also provided.

Abstract: A receptor capable of binding to the target analyte can be used in monitoring a target analyte in a bodily fluid or a sample. A microdevice in accordance with the disclosed subject matter can include a substrate and a conductance elements with receptors grafted on the surface of the conductance element. A microdevice in accordance with the disclosed subject matter can also include a substrate, a first and second conductance elements, and synthetic polymers grafted on the surface of the first and second conductance elements. The first conductance element can be grafted with a sensing polymer that binds the target analyte, and the second conductance element can be grafted with a reference polymer that is insensitive to the target analyte. Differential measurement of the graphene conductance can allow determination of target analyte concentration in a bodily fluid.

Abstract: An array substrate, a manufacturing method thereof and a display device are disclosed. The array substrate comprises a plurality of pixel unit regions each including a thin-film transistor (TFTs) and a pixel electrode. A first insulating layer provided with a first through hole and a second through hole is formed between an active layer of the TFT and the pixel electrode. A source electrode of the TFT is connected with the active layer through the first through hole. A drain electrode of the TFT is lapped onto the pixel electrode and connected with the active layer through the second through hole. The array substrate can prevent the oxidization of metal such as copper in the process of patterning a transparent conductive film.