摘要:
Disclosed is a monitoring system for collecting and/or transdermally rediffusing air containing environmental contaminants. The inventive monitoring system generally includes at least one diffusion collector and/or an equilibrium diffuser. The diffusion collector is provided with at least three layers, i.e. an adhesive layer that is in direct contact with the skin of a living being, a barrier layer, and a collecting layer on the exterior face of the monitoring system. The equilibrium diffuser includes an adhesive layer and a collecting layer. The collecting layers and the adhesive layers of the two components of the monitoring system are preferably made of the same material and have the same dimensions.
摘要:
A security screening and support system for a venue having a plurality of access points includes a plurality of screening centers connected to a central control. The plurality or screening centers are arranged so as to be located in relation to the plurality of access points of the venue. The screening centers collect threat samples from subjects entering the venue, with the samples being screened for a threat signature, such as explosives. If a subject tests positive, an alert status is sent to the central control and a response, which is preferably randomized from a plurality of standard operating procedures, is enacted. The central control enables security personnel to view, monitor, respond and analyze threat situations.
摘要:
A method and an apparatus for detecting and quantifying bacterial spores on a surface. In accordance with the method: bacterial spores are transferred from a place of origin to a test surface, the test surface comprises lanthanide ions. Aromatic molecules are released from the bacterial spores; a complex of the lanthanide ions and aromatic molecules is formed on the test surface, the complex is excited to generate a characteristic luminescence on the test surface; the luminescence on the test surface is detected and quantified.
摘要:
Systems and methods for acquiring laser capture microdissection samples are disclosed. An integral portion of a biological reaction vessel includes a transfer film carrier having a substrate surface; and a laser capture microdissection transfer film coupled to the substrate surface of the transfer film carrier. The systems and methods facilitate quick and accurate laser capture microdissection while simultaneously minimizing contamination.
摘要:
Systems and methods for laser capture microdissection are disclosed. An inverted microscope includes a translation stage joystick subsystem. The systems and methods provide the advantages of increased speed and much lower rates of contamination.
摘要:
A process to determine aerosol particles in gaseous samples, specifically in the exhaust of diesel motors, includes the at least indirect deposit of aerosol particles on a piezoelectric oscillating crystal and the determination of the oscillation parameters of the piezoelectrically stimulated oscillation of the crystal. In order to assure the required reproducibility reliably and independently of the type of aerosol particles, and thus to achieve a high quality of measurements, the piezoelectric crystal is charged to oscillation during less than half the period of deposit of aerosol particles.
摘要:
A method and device for collection and concentration of microbes via selectively attracting microbes to specific substrates chemically conjugated to a solid surface, such as a particle, are provided. Further, a method for selectively enriching for specific microorganisms using a device for collecting populations of microorganisms from an environmental sample comprising a solid support having a surface for attachment of an enrichment media is provided. The method for selectively enriching one or more populations of microorganisms from an in situ environment includes providing a device which has a container having a plurality of solid support particles in the container and a selective microbial enrichment media chemically attached thereto the particles. The container also has permeable openings for the microorganisms to provide entry of them therein so that the microbes will contact the enrichment media. The microorganisms are collected and concentrated in the device by placing it into the environment and the microorganisms are attracted to it and thereby migrate into the device through the permeable openings. The populations of microorganisms may be enriched in the device with a microbial attractant and growth inhibitor in the media and removed therefrom the device. The microorganisms enriched in the device include extremophiles. The solid support particles include glass, silica aerogel or a combination thereof. Glass beads may also be used as the solid support particles.
摘要:
The present invention relates to a method for collecting and concentrating microbes from complex or dilute microbial populations in aqueous or terrestrial environments. The present invention also relates to a method for collecting and concentrating microbes using monomers of polymeric substances conjugated to surface materials.
摘要:
A thermoplastic film for LCM tissue transfer is thermally coupled to a broadband energy-absorbing material. The broadband energy-absorbing material may either be introduced into the film composition as a dopant or may be in thermal contact with the film.
摘要:
A method and an apparatus for detecting removable particulates initially on a test surface or surface to be inspected. The removable particles are transferred to a portion of a tacky surface on a carrier by adhering and then removing the portion of the tacky surface from the test surface. The carrier is received by a positioning means and passed through the field of view of a surface inspection means guided by a controller. Signals from the surface inspection means are combined with coordinates from the controller to produce particle coordinates, which indicate particulates initially on the test surface. Particle coordinates on the tacky surface measured before the tacky surface is adhered and removed from the test surface can be compared with particle coordinates measured after the tacky surface is adhered and removed from the test surface. Several test surfaces can be sequentially inspected using the same carrier by storing particle coordinates after each measurement and comparing the most recent measurement with the cumulative previous measurements. The tacky surface and the associated particle coordinates can be conveyed to other analytical instruments for subsequent analysis.