摘要:
The present invention refers to a droplet-based miniaturized device with on-demand droplet-trapping, -fusion, and -releasing. The device makes use of different electrical fields for directing droplets into microwells and releasing them from the same. In another aspect, the present invention refers to a system comprising such a microfluidic device and a method of operating it.
摘要:
Described are devices and methods for detecting binding on an electrode surface. In addition, devices and methods for electrochemically synthesizing polymers and devices and methods for synthesizing and detecting binding to the polymer on a common integrated device surface are described.
摘要:
An electrical metering system capable of performing multiple metering functions, collecting data, and wirelessly provides the collected metering data to a utility operator. In the electrical metering system, at least one computing device for initiating a request for data. A first modem connects the computing device to an infrastructure. A wireless embedded modem for wirelessly connects an electric meter to an infrastructure, and the wireless electric modem receives a request from the computing device and wirelessly transmits the metering data to the computing device, thereby initiating the request.
摘要:
This invention relates to the development of a new Raman enhancing reagent and a surface-enhanced Raman scattering (SERS) method for rapid and ultra-sensitive detection and identification of perchlorate (ClO4−) and other anions such as technetium (TcO4−), uranium and nitrate in environmental samples. The method involves the synthesis of controlled gold nanoparticles which are modified with amine functional groups such as 2-(dimethylamino)ethanethiol and N,N,N-trimethylaminethiol. These functionalized Au nanoparticles were found to be reactive with perchlorate and other anions and can be used to detect these anions by Raman spectroscopy at ultra low concentrations in complex environmental matrices. This invention overcomes the limitations of currently-available analytical techniques by offering an inexpensive, rapid, ultra-sensitive, and real-time identification and detection of perchlorate and other anions. The technique is not only sensitive but also highly specific because of the unique Raman vibrational bands of perchlorate and other anions.
摘要:
An LED lamp includes a housing comprising a receptacle, first and second bossed holes in the receptacle, each bossed hole having internal threads, and a cover plate including parallel ribs projecting outward, and holes, the cover plate being secured to the receptacle by driving threaded fasteners therethrough into the second bossed holes; two opposite shoulders each formed lengthwise along a central line of an inner surface of either side of the receptacle; a PCB supported by the shoulder and the first bossed holes, the PCB being fastened in the receptacle by driving threaded fasteners therethrough into the first bossed holes; rows of units of LEDs electrically connected to the PCB wherein each row of units of LEDs is parallel to and adjacent the rib; and a waterproofing member in the housing for protecting the PCB. The LED lamp is shallow.
摘要:
A method and apparatus for assessing fertility in mammalian females comprising sampling cervical-vaginal fluid, measuring one or more of the sample's viscoelastic properties, and evaluating the measurement to determine fertility. Preferable embodiments of the current invention may utilize measurement of the viscoelastic property of die swell ratio, or other viscoelastic properties of cervical-vaginal fluid.
摘要:
A method for locating one or more interproximal tooth regions in a digital tooth image. The method can be executed at least in part on data processing hardware. The method includes generating the digital tooth image from a fluorescence image of one or more teeth and a reflectance image of the one or more teeth, so as to combine image data from the fluorescence and reflectance images. The digital tooth image has intensity values for pixels corresponding to the one or more teeth and background. The method identifies one or more tooth regions by processing the digital tooth image and locates the one or more interproximal tooth regions according to the one or more identified tooth regions.
摘要:
A system and method are directed towards automatically modifying an online dating service's search results based on adaptive personalizations from a user's activities. A user provides input to questions that seek information regarding the user. The invention employs the input to identify a list of candidates for a potential long-term social relationship with the user. The invention may then develop a unified search score for each candidate that represents a weighted sum of normalized search subscores. The subscores represent various user activities, affinities with a candidate, frequencies of viewing a candidate profile, and feedback about a candidate from the user. The unified search score for each candidate is then used to rank order the results presented to the user.
摘要:
The present invention broadly comprises a torque converter including a cover arranged to accept torque from a drive unit and an impeller. The cover and the impeller are joined by a crimped connection. In some aspects, the converter includes a sealing element disposed between the cover and the impeller and the sealing element is selected from the group consisting of an o-ring and a gasket. In some aspects, the cover is a cast piece. In some aspects, the cover is formed by a process selected from the group consisting of: molding, compression molding, and pressed metal forming. In some aspects, the cover is a stamped metal piece. The present invention also broadly comprises a torque converter including a cover, an impeller, and an induction brazed connection joining the cover and impeller. In some aspects, the cover further comprises axially disposed fingers engaged with the impeller.