Abstract: A vision screening device, a vision screening system, a vision impairment screening device, vision impairment screening system, processes, method of assessments, and methods of use are presented. The present disclosure provides a vision screening system and device, including obtaining flash imagery in order to be used for analysis of visual function. More specifically, and without limitation, the present disclosure provides the state of the art with a system for attracting the gaze of a user and controlling accommodation for obtaining proper imagery as is needed for visual analysis. Furthermore, and without limitation, the present disclosure provides a vision system for capturing visual performance of a user.

Abstract: A portable monitoring strip reader may include one or more light sensors for reading urine monitoring strips. The monitoring strip reader may collect light intensity information and transmit the information to an application on a portable electronic device for analysis. The application may determine concentrations of analytes and diagnose conditions or illnesses where a concentration is too high or too low. In some aspects, the application may use machine learning models such as an anomaly detection model, diagnosis model, and measurement model.

Abstract: A portable monitoring strip reader may include one or more light sensors for reading urine monitoring strips. The monitoring strip reader may collect light intensity information and transmit the information to an application on a portable electronic device for analysis. The application may determine concentrations of analytes and diagnose conditions or illnesses where a concentration is too high or too low. In some aspects, the application may use machine learning models such as an anomaly detection model, diagnosis model, and measurement model.

Abstract: A laser comprises an end pump light source and a gain medium having a first end, a second end, and four sides comprising a first, a second, a third, and a fourth side. The end pump light source is optically coupled to the first end and pumps the gain medium. The first side and the third side are tapered inwardly from the first end to the first end to the second end at a taper angle ? relative to a longitudinal lasing axis and have a polished finish capable of reflecting light inside the gain medium. The second side and the fourth side are substantially parallel to the longitudinal lasing axis have a ground blasted finish. The first side is also tilted inwardly at a slant angle ? from the fourth side to the second side. A laser beam R0 exits the second end of the gain medium.

Abstract: A laser comprises an end pump light source and a gain medium having a first end, a second end, and four sides comprising a first, a second, a third, and a fourth side. The end pump light source is optically coupled to the first end and pumps the gain medium. The first side and the third side are tapered inwardly from the first end to the first end to the second end at a taper angle ? relative to a longitudinal lasing axis and have a polished finish capable of reflecting light inside the gain medium. The second side and the fourth side are substantially parallel to the longitudinal lasing axis have a ground blasted finish. The first side is also tilted inwardly at a slant angle ? from the fourth side to the second side. A laser beam R0 exits the second end of the gain medium.

Abstract: A laser comprises an end pump light source and a gain medium having a first end, a second end, and four sides comprising a first, a second, a third, and a fourth side. The end pump light source is optically coupled to the first end and pumps the gain medium. The first side and the third side are tapered inwardly from the first end to the first end to the second end at a taper angle ? relative to a longitudinal lasing axis and have a polished finish capable of reflecting light inside the gain medium. The second side and the fourth side are substantially parallel to the longitudinal lasing axis have a ground blasted finish. The first side is also tilted inwardly at a slant angle ? from the fourth side to the second side. A laser beam R0 exits the second end of the gain medium.

Abstract: A dielectric inset mountable within a conical horn antenna for focusing an impinging electromagnetic wave front as a planar wave front at an attached wave guide. In one construction a homogeneous inset having an ellipsoidal forward surface and conical aft surface is fitted into a double flared conical antenna including a cylindrical, hybrid mode matching section. In various alternative compound constructions, materials of differing dielectric constants and geometrical shapes are arranged to facilitate a size and weight reduction of the inset and focus the incident wave front relative to the wave guide. In other embodiments, still lower density materials, including suspended metallic particulates are used.

Abstract: An ion transfer membrane assembly, for electrochemical processes, is provided which includes a plurality of layers of capillary material and a structure for compressing the layers together to control the water permeability of the membrane. The membrane includes a plurality of layers of capillary material, each of the plurality of layers being formed from a corrosion-resistant relatively soft, film, such as a thermoplastic film, having surface manifestations formed on it, which manifestations define the capillaries. The surface manifestation may be formed by embossing, frosting, etching, etc. A plurality of layers of corrosion-resistant, springy, porous capillary material, such as a polyester non-woven web, may be interspersed with the capillary material film layers, and a plurality of layers of smooth-surfaced film may also be interspersed with the capillary material film layers.

Abstract: A membrane assembly for electrochemical processes, and a method of constructing an electrochemical cell utilizing the membrane assembly, are provided. A self-supporting thick block consisting essentially of membrane material has an electrode chamber formed therein extending the length of the height thereof. The membrane assembly block comprises a plurality of layers of material contacting each other and forming the membrane with the chamber extending through the layers, perpendicular to them. An electrode and electrolyte are disposed in the electrode chamber.

Abstract: The invention relates to a membrane assembly and processes for the utilization of the membrane assembly, or membrane assemblies having like properties. The membrane assembly comprises intermixed layers of capillary material and high dielectric constant impermeable material, forming capillary channels parallel to the direction of ion transport through the membrane. The membrane is anion permeable, does not have membrane potential and will not foul even over extended operation, allows cross-flow of anions and cations, and is highly efficient. It is possible to remove complex metals from any contaminated acid by electrodialysis, such as removing vanadium and uranium in recoverable form from contaminated phosphoric acid, while producing food grade phosphoric acid in the process. Additionally, simple metals may be removed from mine waste liquids (from leaching), chlorine can be produced from a chloride containing salt, and chromium can be removed from chromium contaminated water by electrolysis.

Abstract: Apparatus and method for the dewatering of slimes and sludges. An anode and cathode are provided with the sludge disposed between the electrodes, and with a material for providing a continuation of the boundary layer of the sludge disposed in intimate contact with at least the cathode between the cathode and the sludge, the material allowing the passage of water therethrough, and the cathode being constructed to allow passage of water therethrough. The sludge to be treated is maintained between the electrodes during treatment, and structure is provided to ensure continuous contact between the electrodes and the sludge or the like during treatment even as the volume of the sludge decreases due to water removal.

Abstract: The invention relates to a membrane assembly and processes for the utilization of the membrane assembly, or membrane assemblies having like properties. The membrane assembly comprises intermixed layers of capillary material and high dielectric constant impermeable material, forming capillary channels parallel to the direction of ion transport through the membrane. The membrane is anion permeable, does not have membrane potential and will not foul even over extended operation, allows cross-flow of anions and cations, and is highly efficient. It is possible to remove complex metals from any contaminated acid by electrodialysis, such as removing vanadium and uranium in recoverable form from contaminated phosphoric acid, while producing food grade phosphoric acid in the process. Additionally, simple metals may be removed from mine waste liquids (from leaching), chlorine can be produced from a chloride containing salt, and chromium can be removed from chromium contaminated water by electrolysis.

Abstract: The invention relates to an oxidation and coagulation apparatus and method especially suitable for use with aquariums (especially salt-water aquariums). Water is withdrawn from the aquarium by a pump, and is fed into the oxidizer and coagulator. The oxidizer and coagulator includes a chamber into which the pump discharges water under pressure, a plurality of electrodes disposed in the chamber and connected up to a source of e.m.f. (AC), a plurality of electrically conductive particles (e.g., graphite) disposed in the chamber, a structure for violently continuously circulating the particles within the chamber so that they continuously impact all of the electrodes, and structure for preventing movement of the electrically conductive particles out of the chamber. An outlet is provided from the chamber and a filter is provided for separating particles and coagulants from the water after discharge from the chamber, and then returning the now-purified water to the aquarium.

Abstract: An electrochemical process for reducing the level of contaminants in an aqueous electrolyte containing the contaminants comprising: suspending particles in the electrolyte in a reaction zone defined by a pair of electrodes to obtain a suspension containing from 1 to 40% by volume of the particles, establishing high turbulence sufficient to maintain the particles in a state of violent agitation, and passing an electric current between the electrodes to generate an electric field in the turbulent electrolyte in the reaction zone. Advantageously the turbulence of the electrolyte corresponds to a Reynolds number above about 3,000 and preferably is in the range of about 10,000 to 50,000. Apparatus for carrying out the process is also disclosed.

Abstract: A porous layer is provided on one or both surfaces of a mass-transfer membrane to enhance or modify the passage of ions. The membrane may be a film of any of a variety of polymeric materials, and the porous layer may be a surface layer on the membrane or a separate porous structure placed in contact therewith. The porous layer or layers render certain normally ion-impermeable polymeric films capable of passing ions in an electrodialysis-type system.