摘要:
System and method for charged particle beam. According an embodiment, the present invention provides a charged particle beam apparatus. The apparatus includes a charged particle source for generating a primary charged particle beam. The apparatus also includes at least one condenser lens for pre-focusing the primary charge particle beam. Furthermore, the apparatus includes a compound objective lens for forming the magnetic field and the electrostatic field to focus the primary charged particle beam onto a specimen in the charged particle beam path. The specimen includes a specimen surface. The compound objective lens includes a conical magnetic lens, an immersion magnetic lens, and an electrostatic lens, the conical magnetic lens including an upper pole piece, a shared pole piece being electrically insulated from the upper pole piece, and an excitation coil.
摘要:
This invention relates generally to the field of cell seperation. In particular, the invention provides processes for isolating a target cell, cellular organelle or virus from a sample, using inter alia, nonspecific binding between a target cell, cellular organelle or virus with a magnetic microbead modified to comprise hydroxyl, carboxyl or epoxy groups.
摘要:
The present invention includes an electron beam device for examining defects on semiconductor devices. The device includes an electron source for generating a primary electron beam, wherein the total acceleration potential is divided and is provided across the ground potential. Also included is at least one condenser lens for pre-focusing the primary electron beam, an aperture for confining the primary electron beam to ameliorate electron-electron interaction, wherein the aperture is positioned right underneath the last condenser lens, and a SORIL objective lens system for forming immersion magnetic field and electrostatic field to focus the primary beam onto the specimen in the electron beam path. A pair of grounding rings for providing virtual ground voltage potential to those components within the electron beam apparatus installed below a source anode and above a last polepiece of the SORIL objective lens.
摘要:
A method and an apparatus for calculating blood pressure with signal transformation are provided, wherein said apparatus comprises: a pressure sensor, a pressure and pulse wave amplification circuit, an A/D converter, a microprocessor, a control circuit, an air pump and a valve component connected with the cuff gas circuit, a signal processing module and a ratio analysis module; and the method includes the steps of carrying out signal transformation of a time sequence of a sampled PW digital signal, calculating a maximum amplitude value and a corresponding frequency value based on the transformed signal, taking the maximum amplitude value as a amplitude value under the present pressure, carrying out continuously signal transformation of the time sequences of the PW digital signals at different pressure in order to constitute a PW amplitude-pressure curve and obtain an average pressure and a corresponding pulse rate from the PW amplitude-pressure curve, and finally calculating the systolic pressure and diastolic pressure with ratio method. With the method and apparatus according to the present invention, the measurement error can be reduced in case of the shiver, muscular fibrillation and the like of the human body being examined, and the measurement accuracy of blood pressure can be improved.
摘要:
A method and an apparatus for calculating blood pressure with signal transformation are provided, wherein said apparatus comprises: a pressure sensor, a pressure and pulse wave amplification circuit, an A/D converter, a microprocessor, a control circuit, an air bump and a valve component connected with the cuff gas circuit, a signal processing module and a ratio analysis module; and the method includes the steps of carrying out signal transformation of a time sequence of a sampled PW digital signal, calculating a maximum amplitude value and a corresponding frequency value based on the transformed signal, taking the maximum amplitude value as a amplitude value under the present pressure, carrying out continuously signal transformation of the time sequences of the PW digital signals at different pressure in order to constitute a PW amplitude-pressure curve and obtain an average pressure and a corresponding pulse rate from the PW amplitude-pressure curve, and finally calculating the systolic pressure and diastolic pressure with ratio method. With the method and apparatus according to the present invention, the measurement error can be reduced in case of the shiver, muscular fibrillation and the like of the human body being examined, and the measurement accuracy of blood pressure can be improved.
摘要:
An integrated circuit that includes a processor also has an on-chip current test circuit that indirectly measures quiescent current in the processor. A supply voltage pin of the integrated circuit receives a supply voltage from an external test unit to provide power to the processor. The on-chip test circuit measures a voltage change across the processor during a predetermined test period T when the processor is isolated from the supply voltage and the clock signal is stopped. The voltage change provides an indication of quiescent current corresponding to the processor.
摘要:
An integrated circuit that includes a processor also has an on-chip current test circuit that indirectly measures quiescent current in the processor. A supply voltage pin of the integrated circuit receives a supply voltage from an external test unit to provide power to the processor. The on-chip test circuit measures a voltage change across the processor during a predetermined test period T when the processor is isolated from the supply voltage and the clock signal is stopped. The voltage change provides an indication of quiescent current corresponding to the processor.
摘要:
Various embodiments of a low-power-consumption analog-to-digital converter (“ADC”) for a touchscreen or touch panel in a capacitive sensing system are disclosed. The ADC is configured to operate in a first mode or a second mode. The first mode is characterized by a first resolution having a first number of ADC bits and a first level of power consumption associated therewith. The second mode is characterized by a second resolution having a second number of bits and a second level of power consumption associated therewith. The ADC operates under control of the controller and is configured such that the first number of bits is greater than the second number of bits and the first power level is greater than the second power level. The controller causes the ADC to switch from operating in the first mode to operating in the second mode when low radio frequency (RF) noise conditions are detected by sense circuitry, the ADC and/or the controller.
摘要:
The present disclosure describes an information matching method and information system. The method collects characteristic data of category plurality of categories of network behavior of a plurality of network users; groups the network users into a plurality of clusters based on the characteristic data; sets weight of the characteristic data; receives a search request from one of the plurality of network users; obtains search results according to the search request; inquires a historical record of clicking operation on at least some of the search results made by at least some of the network users in one of the clusters which contains the one of the plurality of network users; calculates a respective rank value of each of the at least some of the search results based on the historical record of clicking operation of at least some of the network users and the weight of the characteristic data; sorts of the search results to arrange the search results according to the rank values of the search results in a descending order from high rank to low rank; and causes the sorted search results to be displayed.