摘要:
Various embodiments disclose a colorimetric absorbance measurement method and a system for performing the same. The method comprises driving a reaction tray carrying a plurality of reaction cuvettes to rotate at a speed; transferring or rotating filters on a filter wheel to a light path of a light beam, starting from a filter of a first wavelength; and sampling photoelectric data when the light beam has passed through each reaction cuvette in some embodiments. The method ensures consistency in the measurement and synchronization between the calibration and the sample test and reliability of the measurements. Various embodiments simplify data processing and reduce the complexity of the system.
摘要:
A bolt locking structure for a waterproof LED lamp contains: a first casing and a second casing. The first casing includes multiple first protrusions and multiple first recesses which are arranged on each of four peripheral walls thereof respectively. The second casing includes multiple second protrusions and multiple second recesses which are arranged on each of four peripheral walls thereof respectively. The multiple first protrusions retain with the multiple second recesses, and the multiple first recesses retain with the multiple second protrusions. Multiple through holes are coaxial and form on each peripheral wall of each of the first casing and the second casing respectively, wherein each of the multiple through holes passes through each of the multiple first protrusions and the multiple second protrusions, such that each of multiple connection bolts inserts into the multiple through holes, thus locking the first casing and the second casing together.
摘要:
A packaging structure for an LED lamp contains: a casing, a substrate, a printed circuit board (PCB), and at least one locking element. The casing, the PCB, and the substrate are stacked and adhered together. The at least one locking element respectively inserts into and retains with two connection gaps between the casing and the substrate so as to fix the casing and the substrate together. The substrate includes a stepped groove defined on a central portion thereof and facing the casing, and the stepped groove of the substrate has a first accommodation part and a second accommodation part. A size, a profile, and a depth of the first accommodation part correspond to a size, a profile, and a thickness of the casing. A size, a profile, and a depth of the second accommodation part correspond to a size, a profile, and a thickness of the PCB.
摘要:
An axial flow impeller includes a hub, at least three base blades, and a cover blade detachably mounted to each base blade. When the impeller is applied in a medium environment having a high density and viscosity, the impeller will meet the requirement only by virtue of the base blade with the cover blade being removed. When the impeller is applied in a medium environment having low density and viscosity, the cover blade can be mounted in the front and/or rear of the base blade in order to improve the efficiency of the impeller. In this case, the consumption of electrical power can be reduced significantly while producing an equivalent propulsive force, thereby being advantageous for energy conservation. Therefore, the impeller can be adaptable to different medium environments and efficiency requirements, and thus can have good adaptability, need minimal investment cost and can be convenient to use.
摘要:
A document scanner comprises a first image sensor unit (32) and a second image sensor unit (30) and a scanning mechanism (70, 72, 76, 80) for causing relative movement between a document and the units so that the units scan the document in a scanning direction. The first unit (32) is situated ahead of the second unit (30) in the scanning direction and partially overlaps the second unit. Each sensor unit has a respective linear array (44) of electromagnetic radiation detectors and one or more light guides (48, 49) for directing light from a respective one of two imaging lines (63) on to the detectors, wherein, in use, the imaging lines scan the document to capture data representative of two respective sets of scan line portions for combination to obtain a succession of scan lines for the document, the one or more light guides of the first unit (32) are angled rearwardly with respect to the scanning direction, whilst the one or more light guides of the second unit (30) are angled forwardly with respect to the scanning direction, so as to reduce the distance with respect to the scanning direction, between the imaging lines (63).
摘要:
Embodiments of the present invention disclose an interference elimination method and apparatus for a multi-antenna system. The method includes: generating an equalization coefficient according to a baseband signal received on a receiving antenna, a channel estimation matrix, and an obtained cross-correlation matrix of transmitted signals of a downlink channel on multiple transmit antennas; and performing interference elimination processing on the baseband signal according to the equalization coefficient.
摘要:
The invention features methods and compositions for the synthesis of multimerizing agents. An exemplary method for producing AP20187 may comprise: (a) coupling 2-N,Ndimethylaminomethyl-1,3-diaminopropane with AP20792 to produce the dimeric alcohol, AP20793; and (b) coupling the AP20793 so produced with API7362 to yield AP20187. In particular embodiments, the method further includes the step of producing API7362 by coupling API7360 with methyl-L-pipecolic acid, or a salt thereof.
摘要:
Disclosed is a hybrid propulsion system, comprising an engine, a first motor, a second motor, a power coupling device and a drive shaft. The power coupling device includes a first propeller shaft connected with said engine via a first clutch, a second propeller shaft connected with the rotor of said first motor, and a third propeller shaft connected with the rotor of said second motor. By a planetary gear mechanism with an inner ring gear, said first propeller shaft, said second propeller shaft and said third propeller shaft come into driving engagement with one another. Said inner ring gear and said third propeller shaft are individually selectively in driving engagement with said drive shaft.
摘要:
Various technologies described herein pertain to evaluating service provider compliance with terms of a performance service level agreement (SLA) for a tenant in a multi-tenant database system. The terms of the performance SLA can set a performance criterion as though a level of a resource of hardware of the multi-tenant database system is dedicated to the tenant. An actual performance metric of the resource can be tracked for a workload of the tenant. Further, a baseline performance metric of the resource can be determined for the workload of the tenant. The baseline performance metric can be based on a simulation as though the level of the resource as set in the performance SLA is dedicated to the workload of the tenant. Moreover, the actual performance metric can be compared with the baseline performance metric to evaluate compliance with the performance SLA.
摘要:
The disclosure discloses a method and a system for switching a working mode for a backward compatible broadband wireless network, in order to solve the technical problem of switching between each working mode when various compatible modes based on different channelized sets exist in the broadband wireless network. In the disclosure, an access point (AP) indicates its current working mode by a system configuration message; the AP instructs a non-AP associated with the AP to switch a working mode by a mode switching message or a frame exchange sequence; and the non-AP switches the working mode according to instruction information included in the mode switching message or the frame exchange sequence after receiving the mode switching message or the frame exchange sequence. Through the scheme of the disclosure, a wireless point can be switched between each working mode when various compatible modes based on different channelized sets exist in the broadband wireless network, thereby setting up a broadband wireless network supporting backward compatibility.