A contaminant detection system for a portable computer with the computer having a camera, an integral screen and central processing unit (CPU; a. an enclosure having at least one grasper disposed for coupling the system to the portable computer; b. a light emitter capable of generating light of with least one excitation wavelength for a contaminant present in its output spectrum with output of the emitter oriented into the field of view of the camera; c. electronic communication between the computer and the emitter; c. software loaded onto the computer capable of (1) activating the emitter, (2) comparing a scene recorded by the camera to at least one emission wavelength for the specific contaminant corresponding to the excitation wavelength, and (3) displaying an output on the computer's screen corresponding to the areas within the camera's field of view where the contaminant is present in amounts greater than a detection threshold.

A method for monitoring cleaning of a surface includes applying an amount of transparent indicator material to an area of a surface and measuring the amount of transparent indicator material remaining on the surface. The transparent indicator material may be fixed on the surface by drying and, when a fluorescent material, may be measured through exposure to ultraviolet radiation.

A method is useful for automated detection of antibodies in a liquid biological sample with an antigen chip having antigen spots which are applied thereon and which have an identical, common dye. The antigen spots form respective antigen spot sets which form corresponding respective, regular antigen spot patterns. Furthermore, reference spots comprising the identical dye are applied, and form a reference spot set which forms a regular reference pattern. The reference pattern differs with respect to its regularity from the antigen spot patterns. Through a first image information item which represents a color of the reference spots and of the antigen spots due to the identical, first dye and through a second image information item which represents a potential color of the antigen spots due to a second dye after an incubation, binding of antibodies of the biological sample to respective antigen types is then determined by image processing.

A method of applying a trivalent chromium or chromium-free conversion coating to a metallic substrate including mixing a dye compound that interacts with electromagnetic radiation outside the human visual spectrum but not electromagnetic radiation that is within the human visual spectrum to produce an observable emission into the trivalent chromium or chromium-free conversion coating mixture to allow for inspection of the coating after applied with a correlating electromagnetic radiation source.

A filter set for simultaneously observing fluorescent and non-fluorescent object regions, and an observation system and a method in which the filter set is used are disclosed. The illumination and observation light filters of the filter set each have two separate passbands with high transmission, which are spectrally defined such that illumination light outside the emission spectrum of fluorescence can pass through the illumination and observation light filters and fluorescent light is not swamped by the illumination light. The transmission of the passbands is defined such that non-fluorescent object regions can be observed substantially with color fidelity.

A polymer-matrix fiber-reinforced composite structure includes a plurality of polymer composite layers having at least one polymer composite layer that includes a first polymer-matrix and a first fluorescent agent interspersed through the first polymer-matrix. Damage to the polymer composite structure results in a change in fluorescence at the point of damage. A method for detecting damage in the polymer composite structure described above including the steps of applying light having a wavelength selected to induce fluorescence in the first fluorescent agent to the polymer composite structure, detecting a detected fluorescence pattern, and comparing the detected fluorescence pattern to a predetermined normal fluorescence pattern.

Embodiments related to methods of use of an image analysis system for identifying residual cancer cells after surgery are disclosed. In some embodiments, a patient-specific threshold used to detect abnormal cells in a surgical site can be determined. A medical imaging device can be configured to produce a set of images of an anatomy of a patient. An image analysis system, comprising one or more processors, can be configured to receive the set of images, and analyze the set of images to determine a patient-specific threshold to use to detect abnormal tissue of the patient.

Chemical probes and methods for detecting and/or quantifying hydrogen sulfide are disclosed. More particularly, this application discloses chemical probes and methods for their use for detecting and/or quantifying hydrogen sulfide in industrial and environmental samples and effluents, including samples of crude oil and sour water produced by petrochemical and other industrial processes.

A handheld contamination detection device for a healthcare setting includes a body having a top surface, a bottom surface, and an end surface extending between the top surface and the bottom surface. A light source is coupled to the end surface. The light source emits ultraviolet light away from the body. A user-interface is coupled to the top surface of the body. The user-interface includes a touch screen. A controller is communicatively coupled with the light source and the user-interface. The controller receives a command input from the user-interface and activates the light source in response to the command input.

Apparatus for ensuring adequate sunscreen protection includes a light-activated sunscreen product, and an illuminator including a battery, a switch and a light source that causes the light-activated sunscreen product to glow when illuminated with the light source. The light-activated sunscreen product may include a zinc-oxide-based lotion and a fluorescent substance such as fluorescein dye causing the lotion to glow in any available color when applied to the skin and illuminated by the light source. The closure may be a cap with a threaded attachment to the container, and the light source may comprise one or more ultraviolet light-emitting diodes. The illuminator may be disposed in a cap with top and side surfaces, and the switch may be positioned on the side of the cap, and the light source on the top of the cap, or vice versa. The switch is preferably a momentary contact switch.