Abstract: A target system may include a carrier. The carrier may include a housing, at least one wheel rotatably coupled to an interior of the housing, at least one gear coupled to the at least one wheel, a motor coupled to the at least one gear to drive the at least one wheel via the at least one gear, and a controller to activate the motor based on user input. The target system may also include at least one arm coupled to the carrier, and a coupling device to couple a panel to the at least one arm.

Abstract: A power conversion apparatus supplies power to a load, and the power conversion apparatus includes a power switch, a transformer, and a control module. The control module alternately turns on and turns off a power switch of the power conversion apparatus to convert an input voltage into an output voltage through the transformer. When the power switch is turned off, a primary side of the transformer generates a resonance voltage. The control module sets a predetermined counting threshold according to the output voltage, and sets a blanking time interval according to a feedback signal related to the load. After the blanking time interval ends, the control module counts a number of an oscillation turning point generated by the resonance voltage due to the oscillation of the resonance voltage. When the number reaches the predetermined counting threshold, the control module turns on the power switch.

Abstract: A dynamic two-dimensional code group generation method for generating a two-dimensional code group for dynamically displaying, repeatedly in sequence, a plurality of two-dimensional codes arranged in a time series includes a base identifying step of determining a first setting value of a base two-dimensional code serving as a base from among first setting values identified by evaluation values each associated with a corresponding one of the two-dimensional codes in the two-dimensional code group; and a data block arrangement step of generating and arranging a data block in a storage two-dimensional code identified on the basis of a second setting value corresponding to the first setting value determined in the base identifying step, the data block being based on content of target information to be coded.

Abstract: A bioreactor includes a scaffold, a scaffold support, and a manifold. The scaffold is seeded with a plurality of cells. The scaffold has an extended state and a non-extended state. The scaffold support that selectively modifies a state of the scaffold from the non-extended state to the extended state. A manifold is configured to provide a medium to the scaffold. The state of the scaffold from the non-extended state to the extended state is modified at a rate tuned to maintain a cell density associated with the plurality of cells within a particular density range.

Abstract: A system for culturing cells includes a bioreactor including a scaffold on which the cells tend to adhere. The system further includes a circulatory system that intermittently flows fluid over the scaffold.

Abstract: Modular frames for instructional use that provide secure mounts for geometric solids are presented. Some contemplated modular frames can be assembled into three dimensional modular devices and are particularly suitable for instructional purposes. Modular devices comprising two or more frames could be coupled via a clip in two or more different configurations. Containers including conductive material and configured to provide a Faraday cage around their contents are also provided.

Abstract: A workspace device having a body which is collapsible to a collapsed state to fit through a laparoscopic passageway in a body cavity wall, and expandable to an expanded state within a body cavity into which the passageway extends, including: a workspace body having a workspace wall including a plurality of expandable segments defining an internal lumen, and a plurality of radial rigidizers positioned within the wall; wherein in the expanded state: the workspace device extends defining a workspace axis, and has an opening to the internal volume; and the plurality of expandable segments rigidize the workspace body to resist collapse by intra-abdominal forces, and the plurality of radially extending rigidizers positioned within the wall resist radial forces.

Abstract: A voltage supply circuit includes a charging circuit, a window adjustment circuit, a driving voltage adjustment circuit, a sampling and feedback circuit and a storage circuit. The charging circuit includes a modulation input terminal for receiving a control voltage; and an energy supply terminal for selectively outputting a charging energy according to the control voltage. The window adjustment circuit is used to adjust the control voltage according to a sampling output voltage corresponding to an output voltage signal, and output the control voltage. The driving voltage adjustment circuit is used to keep the control voltage within a clamping voltage according to the output voltage signal. The sampling and feedback circuit is used to generate the output voltage signal according to a voltage at the energy supply terminal. The storage circuit is used to store the charging energy to pull up the voltage at the energy supply terminal.

Abstract: A bioreactor includes a plurality of spargers and a plurality of vertical circulation loops. A first vertical circulation loop of the plurality of vertical circulation loops includes a first sparging region and a first return region. The first vertical circulation loop is in liquid communication with one or more other loops of the plurality of vertical circulation loops. The first vertical circulation loop is characterized by an individual loop mass transfer coefficient. A controller is coupled to the plurality of spargers and configured to control the plurality of spargers together such that a cumulative mass transfer coefficient of the plurality of vertical circulation loops is within a threshold of the individual loop mass transfer coefficient associated with the first vertical circulation loop.

Abstract: Compounds and methods for use in detecting gabapentin in a sample suspected of containing gabapentin are disclosed. Gabapentin derivatives are used to produce gabapentin conjugates. A gabapentin-immunogenic carrier conjugate may be used as an immunogen for the preparation of an anti-gabapentin antibody. A gabapentin-detectable label may be used in a signal producing system in gabapentin assays.

Abstract: A flotation device for providing emergency flotation for a person swimming or passing through a body of water, comprising a container filled with a charge of a gaseous material under a pressure such that it is in its liquid phase at normal environmental temperatures. The container is connected to a flexible flotation chamber through a passage which remains normally closed until actuated by the user. When the device is actuated by opening the passage, the charge expands into the flotation chamber, thereby inflating it, and providing support to the user in the water. The gaseous material has thermodynamic properties such that it remains in its liquid phase right up to the maximum temperatures to which the device is expected to be exposed to. Consequently, its volume, and hence the internal pressure within the gas container, does not increase significantly, thereby enabling the container to be of lightweight construction.

Abstract: Modular frames configured to couple with one another without external fasteners are provided. Some contemplated frames include magnetic fasteners positioned within an edge covering portion, and are configured to removably couple with at least one of another frame and a frame holder.

Abstract: Disclosed is a photoplethysmography-based non-invasive diabetes prediction system, comprising an optical signal transmitter, a driving circuit, a receiving circuit and a processor module. The optical signal transmitter, when driven by the driving circuit, obtains and emits an optical signal of a fixed wavelength and intensity. The receiving circuit converts a received optical signal of photoplethysmography into an electrical signal of photoplethysmography, performs amplification, filtering, digital-analog conversion, and sends the digital photoplethysmography signal to the processor module. The processor module performs signal processing, feature extraction, modeling and prediction on the digital photoplethysmographic signal, and visually displays same. The photoplethysmography-based non-invasive diabetes prediction system and method can achieve non-invasive, real-time and convenient diabetes screening and disease risk prediction.

Abstract: A semiconductor device includes an epitaxial layer on a substrate, a first body region and a first trench gate structure in the epitaxial layer, a first planar gate and a first source electrode on the epitaxial layer, a first source region in the first body region, and a drain electrode under the substrate. The first trench gate structure is extended along a first direction and adjacent to the first body region. The first planar gate is extended along a second direction and at least partially located directly above the first body region. There is a non-zero included angle between the second direction and the first direction. The first source electrode is extended downward into the first body region. The first source region is at least partially adjacent to the first source electrode.

Abstract: A semiconductor device includes a substrate and a well region both having a first conductivity type, a trench in the substrate and directly above the well region, a first trench gate and a second trench gate disposed in the trench and laterally separated from each other, a dielectric isolation portion disposed in the trench and between the first and second trench gates, and a dielectric liner in the trench and under bottom surfaces of the first and second trench gates. A middle region of a bottom surface of the dielectric isolation portion protrudes downward and is lower than two side regions of the bottom surface of the dielectric isolation portion. Below a horizontal line of the bottom surfaces of the first and second trench gates, the thickness of the dielectric isolation portion is greater than the thickness of the dielectric liner.

Abstract: A semiconductor device includes a substrate having a first conductivity type, a well region having a second conductivity type and disposed on the substrate, a first trench and a second trench disposed in the well region. In addition, a first field plate and a first dielectric layer surrounding the first field plate are disposed in the first trench. A second field plate and a second dielectric layer surrounding the second field plate are disposed in the second trench. A first gate is disposed above the first field plate. A source electrode is disposed on a first side of the first trench, and a drain electrode is disposed on a second side of the second trench. The source electrode, the first trench, the second trench and the drain electrode are sequentially arranged along a first direction.

Abstract: A constant-current control device for a power supply including a primary side switch and a secondary winding includes a voltage waveform detector, configured to generate a discharging period signal within a time length when the secondary winding is discharging according to a first feedback voltage and a control voltage; and a constant-current controller, wherein an integrator of the constant-current controller is configured to receive one of a first current source and a second current source according to the discharging period signal and a current detecting voltage to generate an integrator result voltage, wherein the current detecting voltage is related to a secondary winding current value flowing through the secondary winding and the secondary winding current value is positively related to a secondary output current value of the power supply.