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Characterization and Food Application of an Amperometric Needle-Type L-Lactate Sensor 总被引:1,自引:0,他引:1
There have been increasing needs for biosensing in the food industry because it is accurate, rapid and efficient. A needle-type L-lactate sensor with a three-layer membrane system which uses lactate oxidase as the biological component was prepared. The sensor had an optimum pH around 9–10 and an optimum temperature at 45 C. The current response was stable over 40 days and specifically responded to L-lactic acid. The sensor gave accurate L-lactate measurements in kimchi and yogurt of 187.4 ± 4.1 and 734.1 ± 34.5 mg/dL, similar to those of a spectrophotometric L-lactate kit. 相似文献
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To increase battery life in IEEE 802.16e systems, it is essential to efficiently manage energy in mobile stations. The sleep-mode operation in power management helps to increase the life of a station by saving energy consumption. In power management, there are two important performance metrics energy consumption and the response delay of awakening medium access control (MAC) service data unit (SDU). While in a base station (BS) initiation of awakening, the two performance metrics should be simultaneously considered, in a mobile subscriber station (MSS) initiation of awakening, the response delay is not considered because it is self-operational. There performance metrics are affected by the minimum sleep interval (Tmin), the maximum sleep interval (Tmax), and the average interarrival time of awakening MAC SDUs (TI) during sleep-mode operation. Therefore, it is imperative to evaluate the two initiations of awakening depending on TI. To reach a fuller understanding of the performance, this paper shows an analytical mode and simulations results for the standard sleep-mode operation in the IEEE 802.16e MAC. 相似文献
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SANGKI HAN D. W. SHIN Y. KIM Y. P. JUN S. R. MAENG J. W. CHO 《Applied Artificial Intelligence》2013,27(2):93-127
A new hybrid system called Sphinx is presented which combines classification-based reasoning with logic programming technique. It consists of two major components: a terminological component and an assertional one. The former uses a frame-based knowledge representation scheme based on classification and the latter is a theorem prover based on Horn logic. The assertional component can also handle a first-order query language and wh-questions. A new knowledge base maintenance mechanism based on the negation as failure inference rule enables Sphinx to support incremental assertions and retractions. In addition, Sphinx provides explanation capability to help the user in developing and debugging knowledge bases. 相似文献
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We have developed a playmate robot system for playing the rock-paper-scissors game with humans. The playmate robot recognizes
the hand motions of a human using image processing without attaching any additional units to the human. The playmate robot
system consists of three parts: a game management part, a hand motion recognition part, and a robot hand control part. The
system functions as follows. (1) Before the game is played, the game management part decides on the motion of the robot hand
from amongst rock, paper, and scissors. After the game is played, the robot develops a reaction using speech and facial expressions
depending on the result of the game. (2) The hand motion recognition part recognizes the hand motion of the human. It does
not use any additional units on the human’s body, only a camera on the robot. (3) The robot hand control part shows the motion
of the robot hand. A robot hand has four fingers that are controlled independently. We have played the rock-paper-scissors
game with this playmate robot. 相似文献
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对国内某难处理金精矿高压氧化渣进行氯化浸出及吸附试验。结果表明,在下述最佳条件下浸金率达到96.5%:次氯酸钠浓度10g/L、pH=4、氯化钠浓度75g/L、温度40℃、液固比3∶1、搅拌速度300r/min、时间120min。浸金液在室温采用1g/L的717阴离子交换树脂吸附30min,金吸附率达到99.2%。该方法污染少、操作简单、反应速度快。 相似文献