A health analysis fixture includes a receptacle. A volume of water and a body fluid sample form a water line within the receptacle. A light-emitting device and a light-sensing device are disposed within the receptacle. A measurement device determines a height of the water line before and after an introduction of the body fluid sample. A computer processor is configured to receive sensor data from the light-sensing device, receive the determined height of the water line before and after the introduction of the body fluid sample from the measurement device, calculate a dilution factor for the body fluid sample from the received height of the water line before and after the introduction of the body fluid sample, receive sensor data from the light-sensing device, and interpret the received sensor data based on the dilution factor to generate health information therefrom.

A wood stove monitoring and control device can include a mounting flange mountable to a chimney exhaust pipe of a wood stove. The device can include a ring removably mountable on top of the mounting flange, where the flange is suitably positioned vertically along the exhaust pipe so that the ring is positioned at least partially above an end of the exhaust pipe. The device includes an optical beam source disposed on the ring, and which generates and outputs an optical beam. The device includes an optical sensor positioned on the ring opposite the optical beam source to detect the optical beam output by the optical beam source as the optical beam passes through smoke exhausted by the wood stove through the exhaust pipe. The device can include a temperature probe disposed on the ring to measure a temperature of heat exhausted by the wood stove through the exhaust pipe.

Embodiments of the present invention include a backscatter reductant anamorphic beam sampler. The beam sampler can be implemented to measure a power of a reference beam generated by an electromagnetic radiation source in proportion to a power of a working beam. The beam sampler can provide astigmatic correction to a divergence of the working beam along one axis orthogonal to a direction of propagation. The beam sampler can further be implemented to prevent backscatter from impinging upon a photodetector of the beam sampler resulting in a reduction of error and instability in measurements taken by the beam sampler.

A 3D time series vector sediment trap includes a base disposed with trap pipes which includes water flow pipes and sedimentation pipes. The water flow pipes have a horizontal water inlet at the front end, a vertical downward water outlet at the back end and the water flow pipe is internally provided with a filter screen which tilts towards the water inlet. The filter screen is internally tangential to the water flow pipe, and the sedimentation pipes are vertically fixed underneath the water flow pipes. The top end of the sedimentation pipes have an opening and bottom end thereof is closed. The opening is connected to the water flow pipe and directly faces the filter screen so that materials with a diameter greater than the screen pore diameter are intercepted by the filter screen in the water flow pipe and collected in the sedimentation pipe.

Hydrocarbon condensate detection and control. The hydrocarbon condensate detection and control system includes detecting hydrocarbon in an aqueous mixture and controlling the flow of the aqueous mixture based on the hydrocarbon content of the aqueous mixture.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, that generate from a first pair and a second pair of images of livestock that are within an enclosure and that are taken at different times using a stereoscopic camera, at least two distance distributions of the aquatic livestock within the enclosure. The distance distributions can be used to determine a measure associated with an optical property of the water within the enclosure. A signal associated with the measure can be provided.

A multisensor employs an optical system that is modified by the index of refraction of fluid passing between a light emitter and light detector to successfully distinguish between air and water (of any turbidity) and between water of different turbidity values. The optical system may employ lenses contacting the fluid to change their focal length and thus to focus and defocus light on the light detector depending on an index of refraction of the fluid.

Obtaining in-situ, at a first time, first optical spectral data associated with a formation fluid flowing through a downhole formation fluid sampling apparatus, and then obtaining in-situ, at a second time after the first time, second optical spectral data associated with the formation fluid flowing through the downhole formation fluid sampling apparatus. A wavelength-independent scattering intensity within the formation fluid flowing through the downhole formation fluid sampling apparatus is then determined based on the first and second optical spectral data, and a wavelength-dependent scattering intensity within the formation fluid flowing through the downhole formation fluid sampling apparatus is determined based on the first and second optical spectral data.

A chamberless indoor air quality monitor system includes a detector body. A resistive heater is operatively connected to the detector body. An active temperature sensor operatively connected to the resistive heater and operatively connected to an outer surface of the detector body configured to take an active temperature measurement. A method for measuring temperature in a chamberless indoor air quality monitor system includes generating an active temperature measurement with an active temperature sensor operatively connected to an outer surface of the detector body. The method includes heating the active temperature sensor with a resistive heater operatively connected to the detector body. The method includes comparing the active temperature measurements to one another to generate a corrected active temperature measurement based on a temperature difference over time between one or more of the active temperature measurements.

An exhaust detecting safety switch assembly for turning off an oil burner when a disruptive quantity of exhaust is detected includes an oil burner. The oil burner ignites oil to define a flame when the oil burner is turned on. An ignition is positioned in and is in electrical communication with the oil burner. The ignition is actuated to ignite the oil. A shutoff is electrically coupled to the ignition and is actuated to turn the oil burner off when the shutoff no longer detects the flame. A safeguard unit is mounted on and is in fluid communication with the oil burner. The safeguard unit is electrically coupled to the ignition. The safeguard unit detects when the oil burner emits a disruptive quantity of opaque exhaust and when detected turns the oil burner off. The safeguard unit is positioned to inhibit access to the safeguard unit.