A method for determining a source-dependent particle size distribution of an aerosol by an aerosol measuring device. First, a fraction parameter is determined that corresponds to a fraction of a source-dependent aerosol part of the aerosol. In addition, a particle size distribution of the aerosol particles is determined such that the source-dependent particle size distribution of the aerosol is determined from the fraction parameter and the particle size distribution. In terms of the device, the invention comprises an aerosol measuring device for determining a source-dependent particle size distribution of an aerosol, by means of which aerosol measuring device a fraction parameter can be determined that corresponds to a fraction of a source-dependent aerosol part of the aerosol. A particle size distribution of the aerosol particles can be determined such that the source-dependent particle size distribution of the aerosol can be determined from the fraction parameter and the particle size distribution.

A particle measurement system and method of operation thereof are described. The system and method render a characteristic for a set of particles measured while passing through a measurement volume. The system includes a source that generates a particle-laden field containing the set of particles. The system further includes a sensor that generates a raw particle data corresponding to the set particles passing through the measurement volume of the particle measurement system, where the raw particle data comprises a set of raw particle records and each of one of the raw particle records includes a particle data content. A preconditioning stage carries out a preconditioning operation on the particle data content of the set of raw particle records to render a conditioned input data. A machine learning stage processes the conditioned input data to render an output characteristic parameter value for the set of particles.

A particulate matter sensing device includes an inlet through which air is introduced, a particle classifying unit classifying particles included in air introduced through the inlet, a corona discharging unit electrifying the particles passing through the particle classifying unit, and a sensing unit collecting the particles electrified by the corona discharging unit, in which the sensing unit includes an electrode having a plurality of intervals to collect the particles electrified by the sensing unit, and a control unit determining whether fine particles are detected, based on a result of monitoring an output signal change of the electrode.

The present invention generally relates to the manipulation of species using acoustic waves such as surface acoustic waves. In some aspects, a channel such as a microfluidic channel may be provided having two or more outlets, and acoustic waves applied to species within the channel to determine which outlet the species is directed to. For instance, surface acoustic waves may be applied to a species such as a cell or a particle to deflect it from the channel into a groove or other portion that directs it to a different outlet. In some cases, surprisingly, this deflection of species may be in a different direction than the incident acoustic waves on the channel. Other embodiments of the present invention are generally directed to kits including such systems, techniques for producing such systems, or the like.

A bubble measurement device for measurement of bubbles moving in a liquid includes a measurement chamber having an image capturing surface; an image capturing device that captures an image of the bubbles passing along the image capturing surface; an introduction pipe that introduces the bubbles into the measurement chamber; a retaining tank that stores the liquid; a supply pump that draws up the liquid; a drain pipe that returns the liquid into the retaining tank; and a flow velocity adjusting mechanism that adjusts a flow velocity of the liquid passing along the image capturing surface. The flow velocity adjusting mechanism adjusts the flow velocity of the liquid passing along the image capturing surface to be within a range in which the bubbles are measurable. The range is obtained in advance in accordance with an image resolution and a shutter speed of the image capturing device.

A bubble measurement device for measurement of bubbles moving in a liquid includes a measurement chamber having an image capturing surface; an image capturing device that captures an image of the bubbles passing along the image capturing surface; an introduction pipe that introduces the bubbles into the measurement chamber; a retaining tank that stores the liquid; a supply pump that draws up the liquid; a drain pipe that returns the liquid into the retaining tank; and a flow velocity adjusting mechanism that adjusts a flow velocity of the liquid passing along the image capturing surface. The flow velocity adjusting mechanism adjusts the flow velocity of the liquid passing along the image capturing surface to be within a range in which the bubbles are measurable. The range is obtained in advance in accordance with an image resolution and a shutter speed of the image capturing device.

The invention relates to a method for detecting a dengue infection in a patient blood sample, comprising the steps: a) Performing an analysis of prespecified parameters of blood platelets and prespecified types of blood cells in the sample and determining parameter values for the prespecified parameters of the platelets and the prespecified types of cells; b) Obtaining sample parameters from the values determined in step a); and c) Evaluating the sample parameters in relation to a prespecified criterion, wherein, if the criterion is fulfilled, a dengue infection is present.

The present disclosure provides a self-propelled pathogen detection device in which a place where a pathogen is highly likely to be present in a space such as an inside of a facility is allowed to be configured preferentially to be a target region of detection. The self-propelled pathogen detection device according to the present disclosure comprises a housing; a detection part for detecting a pathogen; a movement mechanism for moving the housing; a position acquirement part for acquiring position information representing a current position of the housing in a space; and a control part which determines a target region in the space on the basis of traffic line information on a person in the space, and controls the movement mechanism to move the housing in the target region on the basis of the position information. The detection part detects the pathogen in the target region.

In order to achieve improved determination of fine dust particles, a method is provided for determining particles of an aerosol whereby, in a first measuring step, aerosol is fed to an optical aerosol measuring device without being influenced by a controllable centrifugal separator, at least in a further measuring step aerosol is guided to the optical measuring device while being influenced by the centrifugal separator rotating at least at a speed deviating from the speed 0, and properties of the particles of the aerosol are determined from the received measurement signals of the optical measuring device in the first and in at least one further measuring step. A device is also provided, which has an optical sensor unit forming the measuring volume for recording particles, and is designed such that a separator for size- and/or mass-sensitive separation of particles is arranged upstream of the sensor unit.

The present disclosure provides apparatuses, systems, and methods for performing particle analysis through flow cytometry at comparatively high event rates and for gathering high resolution images of particles.