We report the design of a cost effective, highly sensitive cw laser power meter with a large dynamic range based on a photodiode. The power meter consists of a photodiode, a current to voltage converter circuit, an offset balancing circuit, a microcontroller, an analog to digital converter, reed relays, and an alphanumeric liquid crystal display. The power meter can record absolute laser power ...

The article entitled, Performance of the CONTOUR® TS Blood Glucose Monitoring System, by Frank and colleagues in this issue of Journal of Diabetes Science and Technology, demonstrates that the CONTOUR® TS glucose meter exceeds current regulatory expectations for glucose meter performance. However, the appropriateness of current regulatory expectations, such as International Organization for Sta...

dc measurements are made in a superconducting, persistent current qubit structure with a time-ordered meter. The persistent-current qubit has a double-well potential, with the two minima corresponding to magnetization states of opposite sign. Macroscopic resonant tunneling between the two wells is observed at values of energy bias that correspond to the positions of the calculated quantum level...

According to the related technology about power meter, single-phase power meter based on Ethernet is designed and researched. Single-chip processor MC9S12NE64 is used as system’s CPU and in charge of the system control and information processing. Power measurement chip CS5460A is applied to calculate electrical parameters. EMAC and EPHY modules which are MC9S12NE64’s inter parts are adopted to ...

Rashid, M. T., Voroney, P. and Parkin, G. 2005. Predicting nitrogen fertilizer requirements for corn by chlorophyll meter under different N availability conditions. Can. J. Soil Sci. 85: 149–159. Nitrogen management strategies that enhance fertilizer use efficiency and maximize profitability in corn require a rapid and accurate method to determine the crop N needs of current hybrids. The object...

Development of very large arrays of small antennas has been proposed as a way to increase the downlink capability of the NASA Deep Space Network (DSN) by two or three orders of magnitude, thereby enabling greatly increased science data from currently configured missions or enabling new mission concepts. The current concept is for an array of 400 × 12-meter antennas at each of three longitudes. ...

Karon et al. (1 ) modeled the effects of glucose meter error on insulin dosing errors. They refer to an earlier model that I had pointed out was incomplete (2 ). Although Boyd and Bruns (3 ) agreed with my assessment, the current simulation is, once again, incomplete and the same as the previous simulation. We have reviewed the statistics for glucose meter performance (4 ) and noted that Lawton...