Abstract: In cell instance segmentation of an original cell image obtained by microscopy, the original cell image is rotated by a rotation angle to yield a rotated cell image. A first machine-learning model for cell instance segmentation processes the original and rotated cell images such that effectively, horizontal and oblique boxes are used in bounding cells of the original cell image for enhancing cell-segmentation accuracy. A set of predictions is generated for each cell instance identified from the original and rotated cell images, yielding a plurality of sets of predictions for all cell instances. The plurality of sets of predictions is processed to remove any set having predicted space not simply connected, any unwanted set classified by a second machine-learning model as a poor indicator according to a certain performance criterion, and any redundant set. The plurality of sets of predictions then produces a segmentation map for the original cell image.

Abstract: An exemplary embodiment of the present disclosure provides an electrochemical device comprising a tube having an outer surface defining an interior volume of the tube; a first hollow fiber positioned in the interior volume of the tube, the first hollow fiber comprising: a first membrane defining an interior volume of the first hollow fiber; one or more first electrodes positioned in the interior volume of the first hollow fiber; and at least a first portion of a first electrolyte fluid positioned in the interior volume of the first hollow fiber; one or more second electrodes positioned in the interior volume of the tube and outside of the interior volume of the first hollow fiber; and a second electrolyte fluid positioned in the interior volume of the tube and outside of the interior volume of the first hollow fiber. Also disclosed herein are methods of making an electrochemical device.

Abstract: A composite release film may be configured to separate a current cured layer from a photocuring surface during a photocuring three-dimensional (3D) printing process. The composite release film may include a plastic layer and an elastic layer. An upper surface of the plastic layer may be the photocuring surface, and a lower surface of the plastic layer may fit with an upper surface of the elastic layer. The elastic layer may include an elastic medium of the elastic layer and a reinforcing scaffold. The elastic medium of the elastic layer may be filled in pores of the reinforcing scaffold. The reinforcing scaffold in the elastic layer may include a plurality of protrusions on a lower surface of the elastic layer. In addition, a device and a method using the composite release film to prepare a 3D object through a photocuring 3D printing technique in the field of additive manufacturing are disclosed.

Abstract: A composite release film may be configured to separate a current cured layer from a photocuring surface during a photocuring three-dimensional (3D) printing process. The composite release film may include a plastic layer and an elastic layer. An upper surface of the plastic layer may be the photocuring surface, and a lower surface of the plastic layer may fit with an upper surface of the elastic layer. The elastic layer may include an elastic medium of the elastic layer and a reinforcing scaffold. The elastic medium of the elastic layer may be filled in pores of the reinforcing scaffold. The reinforcing scaffold in the elastic layer may include a plurality of protrusions on a lower surface of the elastic layer. In addition, a device and a method using the composite release film to prepare a 3D object through a photocuring 3D printing technique in the field of additive manufacturing are disclosed.

Abstract: An exemplary embodiment of the present disclosure provides an electrochemical device comprising a tube having an outer surface defining an interior volume of the tube; a first hollow fiber positioned in the interior volume of the tube, the first hollow fiber comprising: a first membrane defining an interior volume of the first hollow fiber; one or more first electrodes positioned in the interior volume of the first hollow fiber; and at least a first portion of a first electrolyte fluid positioned in the interior volume of the first hollow fiber; one or more second electrodes positioned in the interior volume of the tube and outside of the interior volume of the first hollow fiber; and a second electrolyte fluid positioned in the interior volume of the tube and outside of the interior volume of the first hollow fiber. Also disclosed herein are methods of making an electrochemical device.

Abstract: A portable steam generator includes a power source in a housing, a water tank in the housing, a heating element in the housing and configured to heat water in the water tank to produce steam using power from the power source, and a track on the housing configured to support the portable steam generator in an installation position and allow manual removal from the installation position. A pre-plumbed integrated bathroom panel includes a plumbing inlet configured to provide water to the panel, a water outlet connected to the plumbing inlet, a steam outlet connected to the plumbing inlet and a heating element, a sanitizing outlet connected to the plumbing inlet and an additive generator, valves for directing water from the plumbing inlet to the at least one water outlet, the at least one steam outlet, and the at least one sanitizing outlet, and a controller configured to operate at least the plurality of valves.

Abstract: An organic-inorganic perovskite solar cell with directional arrangement of intrinsic perovskite dipoles is provided, and includes a conductive substrate, an electron transport layer, a perovskite film with directional arrangement of intrinsic dipoles, a hole transport layer and a metal counter electrode arranged from bottom to top; or the conductive substrate, the perovskite film with directional arrangement of intrinsic dipoles, the hole transport layer and the metal counter electrode arranged from bottom to top; a preparation method of the perovskite film includes: adding sulfonamide into perovskite precursor solution, and evenly mixing; spin coating on the electron transport layer or the conductive substrate and annealing.

Abstract: Various embodiments of the present disclosure are directed towards a semiconductor device including a dielectric structure disposed on a first substrate. An edge coupler is disposed within the dielectric structure and comprises a plurality of optical core segments. A deflector structure is disposed within the dielectric structure and is laterally adjacent to the edge coupler. The deflector structure is configured to redirect an optical signal traveling along a first direction to a second direction towards the edge coupler.

Abstract: A display screen, an electronic device, and a fingerprint recognition method are provided in the present disclosure. The display screen has a display region. The display screen is provided with multiple pixels and multiple capacitors arranged at intervals in the display region. Each capacitor is corresponding to a region between two adjacent pixels. Each capacitor is configured to generate a fingerprint ridge detection signal corresponding to a fingerprint ridge region and/or generate a fingerprint valley detection signal corresponding to a fingerprint valley region. The display screen is provided with the multiple capacitors in the display region, and each capacitor is corresponding to the region between two adjacent pixels.

Abstract: An optical fingerprint sensor and an electronic device having same are provided. The optical fingerprint sensor includes a light-sensing element, an optical filter layer and an optical lens. The light-sensing element includes: a light-sensing base layer having a groove in a side surface thereof; a first light-sensing layer configured to receive visible light and arranged in the groove; and a second light-sensing layer configured to receive invisible light, and arranged between an inner wall surface of the groove and an outer wall surface of the first light-sensing layer. The optical filter layer is stacked on a side of the light-sensing element where the groove is formed. The optical lens is configured for focusing and stacked on a side of the optical filter layer facing away from the light-sensing element.

Abstract: A genetically engineered bacterial strain that produces N-acetylglucosamine, as well as a method of construction and use thereof. The genetically engineered bacterial strain can ferment N-acetylglucosamine under a condition of 40-50° C. Through knocking out genes for glucosamine 6-phosphate deaminase, N-acetylglucosamine-6-phosphate deacetylase and the N-acetylglucosamine transporter protein from a parental bacterium, an N-acetylglucosamine catabolism pathway is blocked. Moreover, overexpression genes for glucosamine 6-phosphate synthase and glucosamine 6-phosphate acetylase are introduced, enabling extra cellular accumulation of N-acetylglucosamine and high-temperature fermentation of N-acetylglucosamine at a temperature higher than 40° C.