Abstract:
A unique fiber core sampler composition, related systems, and techniques for designing, making, and using the same are described. The sampler is used to interface with existing field instrumentation, such as Ion Mobility Spectrometer (IMS) equipment. Desired sampler characteristics include its: stiffness/flexibility; thermal mass and conductivity; specific heat; trace substance collection/release dependability, sensitivity and repeatability; thickness; reusability; durability; stability for thermal cleaning; and the like. In one form the sampler has a glass fiber core with a thickness less than 0.3 millimeter that is coated with a polymer including one or more of: polymeric organofluorine, polyimide, polyamide, PolyBenzImidazole (PBI), PolyDiMethylSiloxane (PDMS), sulfonated tetrafluoroethylene (PFSA) and Poly(2,6-diphenyl-p-phenylene Oxide) (PPPO). Multiple polymer coatings with the same or different polymer types may be included, core/substrate surface functional ization utilized, and/or the core/substrate may be at partially filled with thermally conductive particles.
Abstract:
L'invention concerne un système (1) de prélèvement d'aérosols et d'iode contenus dans une atmosphère comprenant: -un dispositif (100) de prélèvement d'aérosols comprenant: -un conduit (110) d'alimentation en air, -un filtre (130) pour retenir des aérosols contenus dans l'air, -une pompe (140) adaptée pour prélever et faire circuler un débit d'air dans ledit conduit, et -un module de prélèvement d'iode(200),comprenant: -un conduit de circulation d'air (220), raccordé au conduit d'alimentation en air en aval du filtre(130), -une cartouche (210) de piégeage d'iode contenant une quantité de matériau adsorbant, -une pompe (230) adaptée pour prélever un débit d'air du conduit d'alimentation en air (110), le module de prélèvement d'iode comprenant en outre un dispositif de chauffage (240) de l'air s'écoulant dans le conduit de circulation d'air, et un système de régulation (250) du taux d'humidité de l'air circulant dans ce conduit, commandant le dispositif de chauffage de l'air (240) en fonction du taux d'humidité de l'air.
Abstract:
A target odor detection apparatus and system configured to temporarily house one or more animate odor detectors for screening air passed across odor emitters or conveyances that pass through the target odor detection apparatus. Various types of sensor technologies are incorporated in certain embodiments to provide consistent detection results by, inter alia, consistently interpreting trained signals from animate odor detectors. Various communication technologies are incorporated in certain embodiments to provide enhanced control over an apparatus or system located in multiple and, in some cases, very distant, geographic locations. A target odor detecting apparatus and method the apparatus including a rotatable door assembly is disclosed for screening odor emitters for target odors. A screening zone is defined within the rotatable door assembly wherein air is moved to an observation room for screening by an animate odor detector to detect one or more target odors.
Abstract:
A target odor detection apparatus and system configured to temporarily house one or more animate odor detectors for screening air passed across odor emitters or conveyances that pass through the target odor detection apparatus. Various types of sensor technologies are incorporated in certain embodiments to provide consistent detection results by, inter alia, consistently interpreting trained signals from animate odor detectors. Various communication technologies are incorporated in certain embodiments to provide enhanced control over an apparatus or system located in multiple and, in some cases, very distant, geographic locations. A target odor detecting apparatus and method the apparatus including a rotatable door assembly is disclosed for screening odor emitters for target odors. A screening zone is defined within the rotatable door assembly wherein air is moved to an observation room for screening by an animate odor detector to detect one or more target odors.
Abstract:
A method for employing canines to identify target specimens from among a stream of sets of olfactory specimens, the method comprising for each set, sending at least two canines to sniff a sequenced set of specimens; and if a first of the two canines gives a positive indication to at least one specimen in the set and a second of the two canines gives a negative indication to at least one specimen in the set, re-sequencing the set, repeating the sending step and deciding as to whether or not at least one specimen in the set is contaminated, using a processor to combine a computerized representation of results of both canines and both repetitions of the sending step.
Abstract:
The invention relates to a method and device for detecting explosive-substance particles in a gas flow (46), wherein the gas flow (46) is conducted through an adsorption net (12) for a specified time period, wherein explosive-substance particles (18) are adsorbed onto the adsorption net, the adsorption net (12) is subsequently heated to a heating temperature, at which the explosive-substance particles (18) desorb, and a gas flow containing the desorbed explosive-substance particles is fed to a detector (40) in order to detect the explosive-substance particles, wherein a microfilter (12) having a pore size of less than the particle size of the explosive-substance particles (18) is used as the adsorption net. Thus it is possible to collect practically all explosive-substance particles (18) contained in the gas flow (46) and to feed said explosive-substance particles to a subsequent detection process, whereby the sensitivity of the detection process is increased.
Abstract:
A method for employing canines to identify target specimens from among a stream of sets of olfactory specimens, the method comprising for each set, sending at least two canines to sniff a sequenced set of specimens; and if a first of the two canines gives a positive indication to at least one specimen in the set and a second of the two canines gives a negative indication to at least one specimen in the set, re-sequencing the set, repeating the sending step and deciding as to whether or not at least one specimen in the set is contaminated, using a processor to combine a computerized representation of results of both canines and both repetitions of the sending step.
Abstract:
A chemical sample collection and detection system is disclosed. The chemical sample collection and detection system includes a sample collection device and a detection device. The sample collection device includes a housing having two opposite sides and at least one openings on each side to allow a fluid sample passing through the housing; and a sorbent material placed between the two opposite sides of the housing or a sorbent coated screen. The sorbent material adsorbs chemical vapors, and traps particles and aerosols in the fluid sample when the fluid sample passes the housing through the openings. The detection device includes an atmospheric pressure ionization source and an ion detector. The atmospheric pressure ionization source desorbs and ionizes the chemicals trapped/sorbed on the sorbent material and the ion detector analyzes the ions for the presence of the sorbed chemical.