摘要:
Described herein is a technology for facilitating a user-configurable model for managing synchronization, transfer, or copying of one or more subsets of a collection of digital data items between source and target computing systems.
摘要:
The development of a high-throughput multi-antigen microfluidic fluorescence immunoassay system is illustrated in a 100-chamber PDMS (polydimethylsiloxane) chip which performs up to 5 tests for each of 10 samples. Specificity of detection is demonstrated and calibration curves produced for C-Reactive Protein (CRP), Prostate Specific Antigen (PSA), ferritin, and Vascular Endothelial Growth Factor (VEGF). The measurements show sensitivity at and below levels that are significant in current clinical laboratory practice (with SIN>8 at as low as 10 pM antigen concentration). The chip uses 100 nL per sample for all four tests and provides an improved instrument for use in scientific research and “point-of-care” testing in medicine.
摘要:
A media browsing system prepares various media content and synchronizes the content with a media player for playback. A user can specify the content and preconfigure the manner in which the content will be subsequently accessible through a common user interface on the media player. A variety of media players having configurable, common user interfaces promote a consistent media browsing experience across media players for users accessing a variety of preconfigured media content.
摘要:
A system and methods enable switching between a plurality of online media services from within an application, such as a media player application. A user can switch to any one of a number of online services made available in a services menu and thereby make that service the active service. The active service has customization opportunities that permit the service to customize parts of the media player or other application. Advantages include providing online media services with an ability to control the way in which customers discover and purchase media from within the feature rich environment of various user applications such as a PC-based media player application. From a user's perspective, the advantages include an uninterrupted media experience that can involve the entire process of discovering, purchasing and using of a wide variety of media content all from within the feature rich environment of a media player application.
摘要:
A retroviral vector comprising a first retroviral envelope protein and at least one modified retroviral envelope protein, wherein said first retroviral envelope protein includes a surface protein comprising (i) a receptor binding region; (ii) a hypervariable polyproline region; and (iii) a body portion, and said modified retroviral envelope protein, prior to modification, includes a surface protein which includes (i) a receptor binding region; (ii) a hypervariable polyproline region; and (iii) a body portion, characterized in that said modified retroviral envelope protein has been modified such that at least 90% of the amino acid residues of the receptor binding region of said surface protein of said modified retroviral envelope protein have been removed and replaced with a non-retroviral protein or peptide.
摘要:
Using basic physical arguments, a design and method for the fabrication of microfluidic valves using multilayer soft lithography is presented. Embodiments of valves in accordance with the present invention feature elastomer membrane portions of substantially constant thickness, allowing the membranes to experience similar resistance to an applied pressure across their entire width. Such on-off valves fabricated with upwardly- or downwardly-deflectable membranes can have extremely low actuation pressures, and can be used to implement active functions such as pumps and mixers in integrated microfluidic chips. Valve performance was characterized by measuring both the actuation pressure and flow resistance over a wide range of design parameters, and comparing them to both finite element simulations and alternative valve geometries.
摘要:
Nucleic acid from cells and viruses sampled from a variety of environments may purified and expressed utilizing microfluidic techniques. In accordance with one embodiment of the present invention, individual or small groups of cells or viruses may be isolated in microfluidic chambers by dilution, sorting, and/or segmentation. The isolated cells or viruses may be lysed directly in the microfluidic chamber, and the resulting nucleic acid purified by exposure to affinity beads. Subsequent elution of the purified nucleic acid may be followed by ligation and cell transformation, all within the same microfluidic chip. In one specific application, cell isolation, lysis, and nucleic acid purification may be performed utilizing a highly parallelized microfluidic architecture to construct gDNA and cDNA libraries.
摘要:
A recombinant replication competent retrovirus for gene deliver and gene therapy is provided. The recombinant retrovirus has a heterologous nucleic acid sequence, a sequence encoding a cell- or tissue-specific ligand or a sequence for transcriptional targeting, or a combination of both a cell- or tissue-specific ligand and a cell- or tissue-specific transcriptional targeting sequence.
摘要:
A method of treating a tumor (in particular osteosarcoma or Ewing's sarcoma) in a host by administering to a host or to the tumor cells an agent which inhibits cyclin G1 protein in an amount effective to inhibit cyclin G1 protein in tumor cells of the host. The agent may be an antisense polynucleotide which is complementary to at least a portion of a polynucleotide encoding cyclin G1 protein, or an antibody or fragment or derivative thereof which recognizes cyclin G1 protein. Also contemplated within the scope of the present invention are (i) the immortalization of cell lines by transducing cells with a polynucleotide encoding cyclin G1 protein; (ii) increasing the receptiveness of cells to retroviral infection by transducing cells with a polynucleotide encoding cyclin G1 protein; and (iii) the detection of cancer by detecting cyclin G1 protein or a polynucleotide encoding cyclin G1 protein in cells. In addition, the present invention provides expression vehicles, such as, for example, retroviral vectors and adenoviral vectors, which include polynucleotides which encode agents which inhibit cyclin G1 protein, and expression vehicles which include a polynucleotide encoding cyclin G1 protein.
摘要:
By use of the vias a microfluidic autoregulator is fabricated comprising an origin of a fluid, a sink for the fluid, a main flow channel coupling the origin and the sink, a valve communicated to the main flow channel to selectively control flow of fluid therethrough, and means dependent on flow through the main flow channel for creating a pressure differential across the valve to at least partially activate the valve to control flow of fluid through the main flow channel. The means for dependent on flow for creating a pressure differential comprises either a dead-end detour channel from the flow channel to the valve, or a loop channel fed back to the control chamber of the valve.