摘要:
The present invention provides a sensor for detecting mercury, comprising: a first polynucleotide, comprising a first region, and a second region, a second polynucleotide, a third polynucleotide, a fluorophore, and a quencher, wherein the third polynucleotide is optionally linked to the second region; the fluorophore is linked to the first polynucleotide and the quencher is linked to the second polynucleotide, or the fluorophore is linked to the second polynucleotide and the quencher is linked to the first polynucleotide; the first region and the second region hybridize to the second polynucleotide; and the second region binds to the third polynucleotide in the presence of Hg2+ ions.
摘要:
The present invention provides a sensor system kit for detecting an analyte, consisting essentially of: a nucleic acid enzyme, wherein the nucleic acid enzyme cleaves a substrate in the presence of the analyte; the substrate for the nucleic acid enzyme, comprising a polynucleotide; an aggregator; and particles.
摘要:
The present invention provides a sensor for detecting mercury, comprising: a first polynucleotide, comprising a first region, and a second region, a second polynucleotide, a third polynucleotide, a fluorophore, and a quencher, wherein the third polynucleotide is optionally linked to the second region; the fluorophore is linked to the first polynucleotide and the quencher is linked to the second polynucleotide, or the fluorophore is linked to the second polynucleotide and the quencher is linked to the first polynucleotide; the first region and the second region hybridize to the second polynucleotide; and the second region binds to the third polynucleotide in the presence of Hg2+ ions.
摘要:
Embodiments of a method for nucleic acid-mediated control of a nanoparticle shape are disclosed. In some embodiments, one or more nucleic acid oligomers are adsorbed to a metal nanoseed, and additional metal is deposited onto the nanoseed to produce a shaped nanoparticle. In certain embodiments, the nanoseed is gold and the oligomers are 5-100 nucleotides in length. The nanoparticle shape is determined at least in part by the nucleic acid sequence of the oligomer(s). Shaped nanoparticles produced by embodiments of the method include nanoflowers, nanospheres, nanostars, and nanoplates. Embodiments for using the shaped nanoparticles also are disclosed.
摘要:
The present invention provides a method for preparing a nanoassembly that includes the step of reacting the assembly template with at least one nanomaterial to form the nanoassembly using a bifunctional linker.
摘要:
The described implementations relate to distributed computing. One implementation provides a system that can include an outlier detection component that is configured to identify an outlier task from a plurality of tasks based on runtimes of the plurality of tasks. The system can also include a cause evaluation component that is configured to evaluate a cause of the outlier task. For example, the cause of the outlier task can be an amount of data processed by the outlier task, contention for resources used to execute the outlier task, or a communication link with congested bandwidth that is used by the outlier task to input or output data. The system can also include one or more processing devices configured to execute one or more of the components.
摘要:
A method for rapidly measuring melatonin adulteration of Chinese patent medicines and healthcare foods comprises: (1) extracting melatonin added to a Chinese patent medicine or healthcare food by using ethyl acetate; and (2) adding p-dimethylaminocinnamaldehyde to the extracted solution, and observing color. The method is rapid, simple and convenient, has strong specificity, high accuracy, reaction sensitivity, and a wide application range, and is applicable to on-site detection of melatonin adulteration of a Chinese patent medicine or healthcare food.
摘要:
A fitting set, including a battery assembly and a receiver having a recess for receiving the battery assembly are disclosed. The battery assembly may include a casing having a top wall, a bottom wall, two first sidewalls, and two second sidewalls. The battery assembly may further include a resilient member and a self-locking block. The first sidewalls may include notches extending to the bottom wall. The recess may include lugs on one or more of the inners walls, each of which may be engaged with a corresponding notch. The second sidewalls may each include a first stopper and one or more second stoppers, the first and second stoppers having a difference in height. The resilient member at both ends may abut against the first stopper and self-locking block, respectively, and may also press the self-locking block against an edge of the recess.
摘要:
Discovery of services between devices is provided prior to establishing a connection between devices, including wireless-enabled devices or devices that are communicatively coupled to wireless access points or other wireless communication devices. Discovering services prior to establishing a connection may facilitate finding a desired service. The services that may be discovered may be, for example, print services, camera services, PDA services or any other suitable services. Services may be discovered using 802.11, UWB or any other suitable wireless technology. As one example, particular services may be requested. As another example, services that are provided by a device may be advertised.