摘要:
A calibration technique for a measurement device that produces a spark in an interpane space of an insulating glass unit to determine the content of an inert gas, in particular, argon. Standard calibration units are created which have the same construction as an IGU produced an assembly line. The standard calibration units are filled with varying percentages of argon/oxygen mixture. The calibration technique can be performed on an assembly line by aiming the measurement device at a particular insulating glass unit produced on the assembly line. The measurement device is activated to take a reading of the unit on the line. One of a plurality of calibration standard units of insulating glass units is selected that has substantially an identical construction as the unit on the line except that the calibration standard unit selected has a known, specific amount of certified argon gas that should be the same as the unit on the line. The measurement device is aimed at the calibration standard unit. The measurement device is activated to take a reading of the calibration standard unit. The measurement taken of the calibration standard unit is compared to the known amount of argon gas in the standard calibration unit. And, finally adjusting the calibration of the measurement device if the comparison shows a discrepancy.
摘要:
A method of measuring an analyte in a biological fluid comprises applying an excitation signal having a DC component and an AC component. The AC and DC responses are measured; a corrected DC response is determined using the AC response; and a concentration of the analyte is determined based upon the corrected DC response. Other methods and devices are disclosed.
摘要:
Disclosed are methods for evaluating the environmental impact of various chemical components as a function of their proposed functional use in a chemical product, methods for formulating products based on those evaluations, and databases for assisting in those methods. Consumer products can be environmentally improved using these methods. Environmental criteria are in part developed based on the nature of the ultimate use of the product, and usually vary for a given chemical between types of proposed uses. The environmental classes for components are adjusted by their weight representation in the final product.
摘要:
Water-based chemical indicator inks for ethylene oxide sterilization processes and methods for its use. The chemical indicator ink contains at least one pH indicator dye selected from the group consisting of Bromocresol green, Bromophenol blue, Methyl red, Ethyl orange, and combinations thereof. The pH indicator dye undergoes an irreversible color change when exposed to ethylene oxide vapor in the presence of low-temperature steam, but when exposed to other sterilization processes either does not undergo a color change or undergoes a color change that is different than is obtained when exposed to ethylene oxide.
摘要:
Methods and systems for controlling evaporative drying processes using environmental control process parameters to provide a specified product quality are described. In an environmental equivalency-based control system, measured values are received by environmental equivalency calculation hardware or software. An environmental equivalency value is calculated based on the measured parameters. One or more of the process parameters may then be varied to maintain the environmental equivalency value for the process within a predetermined range of environmental equivalency values.
摘要:
A mobile home-land intelligent system's technology nullH-LISTnull for monitoring suspicious terrorist activities and for tracking biological and chemical gases, and explosives, including detection of stationary and portable weapons of mass destruction such that are likely carried on the body of a terrorist person or suicide bombers, or that are likely planted in a parked vehicle or carried inside a moving vehicle, wherein a sensory platform is made effective in a jacket worn by officers, security officers, bus drivers, hostesses and the like for sensing deadly gases and explosives while patrolling a defined and assigned vicinity. A receptor is attached on a waist belt worn by at least security personnel and connected to the sensory jacket output connection by at least a wireless means for empowering the sensory platform on the outfit and for receiving signal communication wirelessly indicative of detecting a sensed agent. Detected signals are transported wirelessly through radio frequency signals to a central security monitoring station to enable initiating for at least a backup security personnel or agents to the vicinity of the detection. The sensors are multifunctional and coded to recognize wavelike pattern of gases and explosives through generated radio wave frequencies from a transmitter and modulated by a frequency-modulating receiver.
摘要:
The use for biological screening purposes of a subset (library) of a large combinatorially accessible chemical universe increases the efficiency of the screening process only if the subset contains members representative of the total diversity of the universe. In order to insure inclusion in the subset of molecules representing the total diversity of the universe under consideration, valid molecular descriptors which quantitatively reflect the diversity of the molecules in the universe are required. A unique validation method is used to examine both a new three dimensional steric metric and some prior art metrics. With this method, the relative usefulness/validity of individual metrics can be ascertained from their application to randomly selected literature data sets. By the appropriate application of validated metrics, the method of this invention selects a subset of a combinatorial accessible chemical universe such that the molecules of the subset are representative of all the diversity present in the universe and yet do not contain multiple members which represent the same diversity (oversample). The use of the neighborhood definition of a validated metric may also be used to combine (without oversampling the same diversity) any number of combinatorial screening libraries.
摘要:
A system for the detection of contaminates of a fluid in a conduit. The conduit is part of a fluid distribution system. A chemical or biological sensor array is connected to the conduit. The sensor array produces an acoustic signal burst in the fluid upon detection of contaminates in the fluid. A supervisory control system connected to the fluid and operatively connected to the fluid distribution system signals the fluid distribution system upon detection of contaminates in the fluid.
摘要:
A method for processing chemical analysis data is disclosed. The method includes including a step of cluster analysis, the cluster analysis using a distance metric of the form: 1 D xy = null i null ( ( x i - c i s i ) - ( y i - c i s i ) ) 2 ( null i null ( x i - c i s i ) 2 ) null ( null i null ( y i - c i s i ) 2 ) In performance of cluster analysis, the value of the metric increases with difference in angle cc between vectors rx and ry starting in the co-ordinate centre and pointing at the points X and Y. The value of the metric also increases with difference between lengths of vectors rx and ry but this difference is normalised by their length. This means that points located on the tail of the distribution can pass the threshold even though they are further away from each other than points inside the standard deviation range.
摘要:
The present invention provides methods, devices, and systems for analyzing defects in an object such as a semiconductor wafer. In one embodiment, it provides a method of characterizing defects in semiconductor wafers during fabrication in a semiconductor fabrication facility. This method comprises the following actions. The semiconductor wafers are inspected to locate defects. Locations corresponding to the located defects are then stored in a defect file. A dual charged-particle beam system is automatically navigated to the vicinity defect location using information from the defect file. The defect is automatically identified and a charged particle beam image of the defect is then obtained. The charged particle beam image is then analyzed to characterize the defect. A recipe is then determined for further analysis of the defect. The recipe is then automatically executed to cut a portion of the defect using a charged particle beam. The position of the cut is based upon the analysis of the charged particle beam image. Ultimately, a surface exposed by the charged particle beam cut is imaged to obtain additional information about the defect.