摘要:
A loudspeaker system with viscoelastic material affixed between two flexible panels is disclosed. The loudspeaker system dissipates the energy of motion, resulting in less pronounced resonant peaks. The effect may be especially evident at high frequencies, where energy is dissipated over many cycles in a shorter period of time. Also disclosed are the method of making the loudspeaker system and a method of using the loudspeaker system.
摘要:
Describes are methods of contacting printing with a shape-memory stamp. For example, disclosed herein are methods of patterning thin films using shape memory contact printing.
摘要:
Systems and methods of driving plate loudspeakers with different parameters based on frequency region in a way similar to typical cone driver crossover networks are described. These systems and methods may be implemented using arrays of independently controlled drivers which allow a designer to emphasize or de-emphasize certain modes in certain frequency bands. Tuning the characteristics of the plate's motion can also affect the acoustical properties in a larger space rather than just at a single location. The systems and methods described herein can grant a designer a degree of control over the characteristics and performance of the plate.
摘要:
A loudspeaker system composed of a flexible panel with an affixed array of force actuators, a signal processing system, and interface electronic circuits is described. The system described is capable of creating a pattern of standing bending waves at any location on the panel and the instantaneous amplitude, velocity, or acceleration of the standing waves can be controlled by an audio signal to create localized acoustic sources at the selected locations in the plane of the panel.
摘要:
A loudspeaker system composed of a flexible panel with an affixed array of force actuators, a signal processing system, and interface electronic circuits is described. The system described is capable of creating a pattern of standing bending waves at any location on the panel and the instantaneous amplitude, velocity, or acceleration of the standing waves can be controlled by an audio signal to create localized acoustic sources at the selected locations in the plane of the panel.
摘要:
Methods and compositions for depositing a monolayer onto a surface of a substrate are described. The method can include contacting the surface with a vapor phase comprising a carbene source, and reacting a carbene group from the carbene source with a functional group on the surface, to obtain a covalently bound monolayer on the surface of the substrate. The carbene source can be a diazirine compound. The functional group on the surface can be a C—H containing group, a Si—H containing group, among others, or combinations thereof. The method can further involve removing physisorbed molecules from the surface of the substrate.
摘要:
Compositions and methods for separating double-stranded nucleic acids out of a mixture comprising single-stranded nucleic acids and/or dNTPs and/or enzymes. The method uses spatially inhomogeneously functionalized nanoporous materials. For example, the compositions and methods of the present invention can be used to purify DNA amplification reaction products.
摘要:
Disclosed herein are compositions of Formula I and an optional anticancer drug. Also disclosed herein are methods of treating or preventing cancer using the same.
摘要:
Provided herein is a transgenic animal whose genome comprises a first nucleic acid sequence encoding a fusion polypeptide, wherein the fusion polypeptide comprises a Cre recombinase and a mutated ligand binding domain of human estrogen receptor (CreER), wherein the first nucleic acid is operably linked to a chondrocyte-specific promoter and a second nucleic acid sequence encoding a β-catenin polypeptide, wherein the second nucleic acid sequence comprises one or more loxP sequences. Also provided is a method of modifying a transgenic animal comprising administering tamoxifen to the transgenic animal. Also provided are methods of screening for an agent that reduces or prevents Cre-Negative Control one or more symptoms of osteoarthritis or intervertebral disc disease in a subject. Methods for identifying a subject with or at risk of developing osteoarthritis or intervertebral disc disease are also provided, as well as methods of treating or preventing osteoarthritis or intervertebral disc disease in a subject.
摘要:
The present invention relates to compounds capable of acting as androgen receptor antagonists, pharmaceutical formulations containing the same, and methods of use thereof. Such uses include, but are not limited to, use as antitumor agents, particularly for the treatment of cancers such as colon, skin and prostate cancer and to induce androgen receptor antagonist activity in a subject afflicted with an androgen-related affliction. Examples of androgen-related afflictions include, but are not limited to, baldness, hirsutism, behavioral disorders, acne, and uninhibited spermatogenesis wherein inhibition of spermatogenesis is so desired.