摘要:
The invention provides methods for designing ophthalmic lenses, and lenses produced by this method, which lenses corrects both low order and high order wavefront aberrations of the lens wearer's eyes.
摘要:
The invention provides a lens useful in correction of low and high order ocular wavefront aberrations order aberrations, and methods for designing and producing the lens, in which excessive variations in lens thickness are minimized.
摘要:
Devices and methods for controlling myopia are provided. The devices and methods relate to the inventors discovery of the relationship between near work, the forces applied to the eye by the eyelids and myopia. The devices include a contact lens comprising a region that disperses force applied to the eye by an eyelid. The devices also include a device designed by measuring first wavefront aberrations of an eye before pre-near work and measuring second measured wavefront aberrations of the eye post-near work. The methods include a method for controlling myopia including identifying optical changes associated with near work and correcting the optical changes with an optical device.
摘要:
Devices and methods for controlling myopia are provided. The devices and methods relate to the inventors discovery of the relationship between near work, the forces applied to the eye by the eyelids and myopia. The devices include a contact lens comprising a region that disperses force applied to the eye by an eyelid. The devices also include a device designed by measuring first wavefront aberrations of an eye before pre-near work and measuring second measured wavefront aberrations of the eye post-near work. The methods include a method for controlling myopia including identifying optical changes associated with near work and correcting the optical changes with an optical device.
摘要:
An instrument and associated method are disclosed for preparing samples for column chromatography. The method includes the steps of applying microwave energy to a sample composition containing at least one solvent to encourage a chemical reaction and generate desired products, thereafter mixing an absorbent media with the sample to absorb the solvent, the media being compatible with liquid chromatography that will separate the expected products, being chemically inert to the expected products, and being added in an amount sufficient to provide a substantially dry mixture of the media and the sample, but less than an amount that overly broadens the resolution of the sample during liquid chromatography, thereafter applying microwave energy to the dry mixture of the media and the sample to thereby encourage the solvent to evaporate under the influence of the microwave energy, and thereafter adding the dry mixture of the media and the remaining sample to a liquid chromatography column and separating the components of the remaining sample for identification and purification purposes.
摘要:
The invention is a method and associated instrument for microwave assisted chemistry. The invention includes the steps of directing a continuous flow of fluid through a microwave cavity while applying microwave radiation to the cavity and to the continuous flow of materials therein, monitoring the pressure of the fluid in the cavity; and cooling the fluid in the cavity when the pressure exceeds a predetermined setpoint pressure.
摘要:
The invention is an instrument and method for microwave-assisted chemical synthesis. The instrument includes a source of microwave radiation for applying microwave energy to a sample, a microwave cavity in wave communication with the source for holding the sample during the application of microwave energy, and a substantially monochromatic radiation source in electromagnetic communication with the cavity for applying substantially monochromatic light to the sample. The instrument further includes a detector positioned to detect Raman scattering of light from the monochromatic source by the sample, and a controller in signal communication with the microwave energy source and the Raman scattering detector for moderating the application of microwave energy to the sample based upon the detected Raman scattering.
摘要:
An instrument and associated method are disclosed for preparing samples for column chromatography. The method includes the steps of applying microwave energy to a sample composition containing at least one solvent to encourage a chemical reaction and generate desired products, thereafter mixing an absorbent media with the sample to absorb the solvent, the media being compatible with liquid chromatography that will separate the expected products, being chemically inert to the expected products, and being added in an amount sufficient to provide a substantially dry mixture of the media and the sample, but less than an amount that overly broadens the resolution of the sample during liquid chromatography, thereafter applying microwave energy to the dry mixture of the media and the sample to thereby encourage the solvent to evaporate under the influence of the microwave energy, and thereafter adding the dry mixture of the media and the remaining sample to a liquid chromatography column and separating the components of the remaining sample for identification and purification purposes.
摘要:
A system for launching a target disk above a terrestrial surface, including a first support, a first bracket attached to the first support, a second support connected to the first bracket and configured to pivot with respect to the first bracket in a first plane, and a second bracket attached to the second support and configured to pivot with respect to the second bracket in a second plane, the second plane being generally perpendicular to the first plane. A launching structure is attached to the second bracket, and the second support is configured to pivot with the second bracket. A track is configured to hold and direct the target upon launching, the track being configurable to present the target to be launched in a first presentation generally parallel to the terrestrial surface and a second presentation generally perpendicular to the terrestrial surface.
摘要:
Systems for monitoring or control can include reconfigurable input and output channels. Such reconfigurable channels can include as few as a single terminal and a ground pin, or such channels can include three or four terminal configuration such as for use in four-terminal resistance measurements. Channel reconfiguration can be accomplished such as using software-enabled or firmware-enabled control of channel hardware. Such channel hardware can include analog-to-digital and digital-to-analog conversion capability, including use of a digital-to-analog converter to provide field power or biasing. In an example, the interface circuit can provide a selectable impedance.