30results about How to "Measure is short" patented technology

The present invention provides an improved surgical blade and trocar system for accessing the retina and other parts of the eye while doing vitreo-retinal and cataract surgeries, including surgeries for macular degeneration. The eye surgeon uses an improved surgical blade for vitreo-retinal and cataract surgeries having a generally flat, V-shaped, W-shaped, or “extended W” shaped cross-section. Using the improved surgical blade, the surgeon creates a multi-planar, self-sealing surgical wound, first by directing the surgical blade substantially perpendicular to the eye surface, then redirecting the blade to follow the general curvature of the eye globe, and finally redirecting the blade to enter the interior of the eye. The improved surgical blade is used with an improved trocar system having two main parts-a relatively rigid, wide-mouthed outer segment and a generally thin-walled, collapsible plastic polymer or metal mesh sleeve that spans the surgical wound and substantially molds to its contour. The improved surgical blade and trocar system can be adapted for use in either vitreo-retinal or cataract surgeries.

A device for measuring electrical treeing of medium voltage cables. The device includes a plurality of test units connected in parallel. Each test unit includes: a test cup and an insulating base. The test cup includes an inner cavity for accommodating a salt solution, an insulating cover equipped with a first electrode, and an opening. The insulating base includes a side wall, an insulating washer, a second electrode, a conductor, and a through hole from top to bottom. The test cup is disposed on the insulating base. The lower part of the test cup is surrounded by the side wall and presses on the upper surface of the insulating washer. The lower part of the test cup is in threaded connection with the side wall. The space between the opening and the test sample is sealed by the insulating washer.

An object of the present invention is to provide a novel glucose dehydrogenase, a method for producing the glucose dehydrogenase, and applications of the glucose dehydrogenase. The flavin-binding glucose dehydrogenase of the invention has the following characteristics (1) and (4): (1) Molecular weight: the molecular weight of a polypeptide moiety in the enzyme is about 68 kDa as measured by SDS-polyacrylamide electrophoresis; (2) Km value: the Km value for D-glucose is about 15 mM or less; (3) Temperature stability: stable at a temperature of 55° C. or less; and (4) pH stability: stable at a pH range of 3.0 to 8.5.

In a measurement zone that is spaced apart in a Y-axis direction from an exposure zone that is located immediately below a projection unit, a detection area of an alignment system is moved in the Y-axis direction and a plurality of marks are sequentially detected, and therefore a movement distance of wafer stages in the Y-axis direction when performing the mark detection can be decreased compared with the case where only the wafer stages are moved while fixing the alignment system and mark detection is performed as in the conventional cases. Accordingly, a width of the measurement zone in the Y-axis direction can be reduced, which allows the apparatus to be downsized.

A polarizing device including a plurality of polarized light radiating units for radiating polarized light rays each of which is polarized in a particular direction, a rotary reflector for receiving light rays emitted by the plurality of polarized light radiating units while being rotated and for outputting reflected light in a certain direction, and an analyzer disposed midway an optical path of the reflected light from the rotary reflector to set a polarization direction of the reflected light in a certain direction, wherein each of the polarized light radiating units includes a light source, a polarizer for setting a polarization direction of light from the light source, and a first compensator for compensating for a change in a state of polarization attributable to the rotary reflector, and the plurality of polarized light radiating units are disposed in a radial arrangement that is centered at the rotary reflector.

A method for measuring the concentration of polynucleotide in a sample comprising the steps of: (1) preparing a sample, a Raman scattering active agent capable of bonding to a polynucleotide and a surface-enhanced Raman scattering (SERS) active substrate capable of capturing the agent; (2) mixing the sample, the agent and the substrate to capture the agent which has not been bonded to polynucleotide on the surface of the substrate; (3) irradiating the mixture; and (4) measuring the SERS radiation which is generated by the agent captured on the surface of the substrate.

An object of the present invention is to provide a novel glucose dehydrogenase, a method for producing the glucose dehydrogenase, and applications of the glucose dehydrogenase. An isolated flavin-binding glucose dehydrogenase comprising a polypeptide having an amino acid sequence with 80% or more identity to the amino acid sequence of SEQ ID NO: 1, and having glucose dehydrogenase activity is provided.

A biological optical measuring apparatus includes a light source probe and a light receiving probe, one of which is provided with a pressure sensor to detect a contact pressure of a skin of a subject. Pairs of plural values of the contact pressure and light detection signals are previously recorded as calibration data, an estimated value of a false signal is derived from a detection value of the pressure sensor at primary measurement and the calibration data, and a measurement signal waveform in which a noise component due to a movement of the subject is removed is acquired by subtracting the estimated value from a light measurement signal.

To provide a mercury measuring apparatus of a closed system capable of performing automatically a process ranging from collection to injection of the sample composed mainly of hydrocarbon, which is effective to accomplish a highly reliable measurement. The mercury measuring apparatus 100 includes a column 1 filled with a first adsorbent 11 and a reducing agent 13, an injecting unit 3 for injecting a sample into the column 1, a first heating unit 12, a second heating unit, a mercury collecting tube 18 filled with a second adsorbent 17, a third heating unit 19, a mercury measuring unit 2, gas flow passages FP1, FP2 and FP4, flow switching valves V1 to V3, V5 and V6 for selecting one of the gas flow passages FP1, FP2 and FP4, and a control unit 4.

The present invention provides a means of measuring the concentration of ozone dissolved in water or another solvent. Small, discrete samples are sparged with air or another unreactive gas for a short period of time to measure a profile of ozone vs time in the sparge gas. The total amount of ozone in the original sample is obtained by integrating under the ozone vs time profile. A correction may be made for ozone remaining in the sample after a finite sparge time by integrating under the profile tail using a decay constant obtained from the measured ozone vs time profile. The method differs from previous methods based on sparging of the sample in that a Henry's Law equilibrium or constant ratio of ozone present in the gas and liquid phases is not assumed and the flow rates of sample and sparge gas are not continuous. Instead, discrete samples are analyzed by nearly complete sparging. The new method is applicable to dirty (impure) water because the ozone is measured in the absence of UV-absorbing and scattering impurities that may be present in the sample. The method applies to high purity water as well.

The method for forming a laminate of the present invention is a method for forming a laminate, comprising a silane coupling agent treatment step of applying an aqueous solution of a silane coupling agent onto a surface of a metal layer, and drying the resultant applied film to form a silane coupling agent coating, and a lamination step of laminating a resin layer on the silane coupling agent coating, these steps being continuously performed, wherein when the formed silane coupling agent coating is analyzed in the silane coupling agent treatment step by FT-IR with a reflection absorption spectrometry and then the peak area of Si—O is turned to a value less than a predetermined threshold value, at least one part of the aqueous solution of the silane coupling agent is renewed, thereby conducting the silane coupling agent treatment while the peak area is controlled into a predetermined range.

An image formation apparatus includes a dot formation element; a voltage signal generation circuit configured to generate a voltage signal by using an amplification circuit including a transistor, the voltage signal including a plurality of driving voltage pulses each thereof driving the dot formation element, and at least one temperature measurement voltage portion each thereof being provided between two successive ones of the driving voltage pulses; a temperature measurement control unit configured to measure a temperature of the transistor on the basis of the voltage signal; and a switch circuit configured to output the voltage signal to the dot formation element during a period when the transistor amplifies a signal corresponding to each of the driving voltage pulses, and output the voltage signal to the temperature measurement control unit during a period when the transistor amplifies a signal corresponding to each of the at least one temperature measurement voltage portion.