Abstract: A screen overlay for a personal electronic device coupled with an educational application launched on the device provides a work surface for engaging in fluidic based chemistry experiments while shielding the device from the liquid used for the experiments. The screen overlay has liquid encapsulating regions for retention of a pooled liquid deposited on the overlay, and is transmissive of touch signals to a touch screen on the device. An educational application executing on the device renders predetermined regions on the device display that are coordinated with the fluid retention regions. A liquid deposition vessel such as a dropper has a conductive outer surface for engaging a user's grasp, and a wire or conductor is adapted to extend through the pooled liquid for contact with the screen overlay. The screen overlay is transmissive of capacitance signals emanating from the user for indicating fluidic presence to the educational application on the device.

Abstract: A visual rendering apparatus such as a telescope, microscope or attached tablet/led displays a magnified subject using the mapped rendering medium, in which the rendering medium includes at least one of actual visual transmissions of the subject and stored, high resolution images of the magnified subject. In an educational context, equipment for displaying true magnified images of, for example, celestial bodies or molecular structures can be beyond reach. Augmented reality provided by supplementing the true, rendered magnified subject with stored images corresponding to successive, higher magnification levels provides effective visualization with common educational tools, avoiding the need for extravagant scientific equipment.

Abstract: There is disclosed an educational system including a science experimental set and a computer system, the science experimental set comprising experimental set items, and the computer system including a processor, a detector and a display, the computer system configured to display educational media content on the display relating to the science experimental set in response to the detector detecting an item in the science experimental set, and the processor identifying the media content to be displayed based on the detection of the item. Related methods, computer program products and kits of parts are disclosed.

Abstract: Provided are an alloy member which is usable in organisms, makes use of features of bio-affinity and biodegradability of magnesium, and is able to realize required duration of biodegradability, and a production method therefor. According to the present invention, the alloy member usable in organisms includes a base body that contains a magnesium alloy, a first protective layer that contains an oxide derived from a component of the base body or a complex of an oxide and a hydroxide derived from a component of the base body, and a second protective layer that contains a hydroxide derived from a component of the base body.

Abstract: In at least one embodiment, a specimen holder includes a specimen holder shaft unit having a specimen and/or specimen mesh setting unit, an outer tubular unit capable of housing the specimen holder shaft unit, a thermal drift adjusting unit made of a material having a different thermal expansion coefficient from a thermal expansion coefficient of the specimen holder shaft unit and partially in contact with the specimen holder shaft unit, and a control mechanism which controls movement of the thermal drift adjusting unit toward a center direction of a specimen.

Abstract: The purpose of the present invention is to provide a specimen holder having a structure capable of maintaining a seal surface regardless of a change of environment. A specimen holder according to the present invention is characterized by comprising a specimen holder axis part having a specimen and/or a specimen mesh setting part, an external cylinder part capable of housing the specimen holder axis part, and a seal part for sealing the specimen and/or the specimen mesh setting part from atmosphere wherein the seal part is set to a step part which is set to a portion of the external cylinder part. Further, in a referred embodiment of a specimen holder according to the present invention, it is characterized in that the seal part set to the step part is as a first seal part, further the specimen holder has a second seal part which exists in a tip part of the specimen holder and exists in a direction of a central axis of an electron microscope comparing to the specimen and/or the specimen mesh setting part.

Abstract: Provided are an alloy member which is usable in organisms, makes use of features of bio-affinity and biodegradability of magnesium, and is able to realize required duration of biodegradability, and a production method therefor. According to the present invention, the alloy member usable in organisms includes a base body that contains a magnesium alloy, a first protective layer that contains an oxide derived from a component of the base body or a complex of an oxide and a hydroxide derived from a component of the base body, and a second protective layer that contains a hydroxide derived from a component of the base body.

Abstract: A self-sampling device used for collecting a homogenized sample of cells from different areas within the vaginal canal by a user. The device, comprises a hollow, cylindrical elongated tubing, a cell collecting area which is covered by an adhesive collecting element is disposed at one end, a channel disposed along the length of the cell collecting area for collecting the cells from different areas along length of the vaginal canal via one insertion, so as to mix the cells within the channel resulting in the homogenized collection of cells, further the collecting element has plurality of organized ridges arranged along the length of the cell collecting area to facilitate cell collection and a handle comprising an ergonomically shaped finger grip, wherein one end of the finger grip having a design or marking to facilitate easy counting of the complete rotations of the device, the handle and the tubing is designed to form a unitary structure.

Abstract: An optical fiber connector embedded with a Bragg grating includes: a ferrule formed with a reception unit for inserting and fixing a temperature compensation connection port from one end, a space unit extended from the reception unit toward inside, and an optical fiber insertion hole penetrating a side surface of the other end along a center of an axial direction from an inclined surface gradually narrowed toward inside of the space unit; the temperature compensation connection port formed with a connection unit contacting with the reception unit of the ferrule, an optical fiber support unit having an outer diameter smaller than an inner diameter of the space unit of the ferrule from the connection unit and protruding to be spaced apart from an inlet of the ferrule by a predetermined distance to form a space for accommodating the Bragg grating and support an optical fiber, and the optical fiber insertion hole penetrating both ends along the center of the axial direction to insert the optical fiber; an optical

Abstract: In at least one embodiment, a specimen holder tip part comprises a specimen setting seat, a specimen mesh for mounting a specimen, a specimen holding part for holding the specimen mesh and a clamping part that clamps the specimen holding part.

Abstract: In at least one embodiment, a specimen holder tip part comprises a specimen setting seat, a specimen mesh for mounting a specimen, a specimen holding part for holding the specimen mesh and a clamping part that clamps the specimen holding part.

Abstract: Provided is an optical communication system including: a remote control device for generating OAM (Operation, Administration, and Maintenance) signal including OAM information for equipment, converting the OAM signals to OAM optical signals, overlaying the OAM optical signals and communication upstream signals transmitted to a Communication Stations device, and controlling the transmission of the overlaid signals to the Communication Stations device; and the Communication Stations device for generating OAM control signals, converting the OAM control signal to OAM optical control signals, overlaying the OAM optical control signals and optical communication downstream signals transmitted to the remote control device, and controlling the transmission of the overlaid control signals to the remote control device.

Abstract: Provided is a wavelength tunable external cavity semiconductor laser module by a thermo-optic effect of a semiconductor optical waveguide. The wavelength tunable external cavity semiconductor laser module includes: a light source generating wideband light; a semiconductor optical waveguide having one end optically coupled to the light source; a Bragg grating formed on the optical waveguide; a thin film heater provided at an upper portion of the Bragg grating and controlling a reflection band of the Bragg grating by a thermo-electric effect; a first temperature sensor provided at an upper portion of the optical waveguide; a thermoelectric cooler (TEC) provided at a lower portion of the optical waveguide; a heat insulating layer provided between the optical waveguide and the TEC; and an optical fiber optically coupled to the other end of the optical waveguide.

Abstract: The method of computerized grading of formula-based multi-step problems includes the steps of providing a memory for storing problems and data to enable and facilitate assessment of correctness of problems, storing at least one formula-based multi-step problem in the memory, a complete solution to the problem requiring calculation of at least one intermediate answer and a subsequent calculation using said intermediate answer to arrive at said complete solution, providing a computer program that can grade submitted answers to the steps of said problem, providing a user interface with selective access to the memory and the computer program, and providing a global computer network with which the user interface can be connected to the memory and grading program.

Abstract: A collection, storage and dispensing system (10 or 30) for shopping carts (E) including an elongated tubular conduit sized to allow a shopping cart (E) to rollably pass therethrough. The conduit includes a novel upright or a sloped first end section (38 or 14) defining an entrance opening (16 or 36) through which shopping carts (E) enter the system (10 or 30), a generally horizontal mid section (12, 32 or 52), and a sloping or an upright second end section (18 or 38) which defines an exit opening (20 or 40) through which shopping carts (E) exit the system (10 or 30). The mid section (12 or 32) is preferably buried below grade, but may also be elevated above a parking lot surface of a store for vehicles to drive beneath. A floor (62) is provided within the conduit (52) atop which shopping carts (E) roll.