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A POWER CONSUMPTION ANALYSIS OF ULTRA-LOW POWER MICROCONTROLLERS
Koji TOMINAGA,Koichiro TANAKA 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
This paper reports the measurement results of the power consumption provided to an ultra-low-power microcontroller. Recently, mobile devices equipped with wireless communication capabilities have been effectively used by many people. Therefore, there are quite a lot of demands to adapt the capabilities to mobile devices without them. However, mobile devices which are required long battery life might not operate correctly when the module equipped with the capabilities simply connects them because the module consumes a big electric power. Ultralow-power microcontrollers will be able to reduce the power consumption of the system including their communication modules by controlling them. However, it is necessary to decrease the power consumption of the microcontroller to achieve this. Then, we measure the power consumption of MSP430 microcontrollers made by Texas Instruments. In the experiment, the power consumption value in some microcontrollers which only the internal memory size is different is measured. Moreover, the power consumption of the microcontroller in four of low-power modes (LPMs) are investigated. As a result, the microcontrollers with different internal memory size have showed the same power consumption. In addition, the power consumption of it has decreased when the LPM rise. In this paper, these results are shown in detail. In addition, the system that transmits the digital data converted from analog data by wireless communication.
송사리(Oryzias latipes)를 이용한 매립지에서의 내분비 교란물질 모니터링 시스템
( Makiko Tanaka ),( Kazuhiko Fukatsu ),( Ryota Shinohara ),( Koji Arizono ),( Hiroshi Ishibashi ),( Masataka Hanashima ),( Sotarou Higuchi ),( Keijirou Tomoda ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.2
본 논문의 목적은 매립지와 매립지 주변환경에 대해서 송사리를 사용하여 실제 내분비교란물질에 대한 모니터링 시스템을 수립하는데 있으며, 그 모니터링 시스템은 2개phase 구성되어 있다. 첫번째 phase는 물에 대한 실험이며, 두번째 phase는 생태적 모니터링이다. 본 논문에서는 첫번째 phase에 관해서 나타내었으며, 이 실험에서는 처리되지 않는 침출수와 고도 처리된3가지(전기투석, 역삼투압, DT module system)의 침출수를 사용하여 실험을 실시하였다. 이때의 침출수는 일본의 若 松區北九州市에 위치한 매립지의 침출수를 이용하였다. 실험항목은 송사리의 태아, 치어, 성어의 급성 독성, 송사리의 생산성, 에스트로젠 활성도로써의 vitellogenesis 실험을 실시하였으며, 침출수의 의독성은 TOC농도에 따라 증가하였다. 송사리의 치어는 침출수의 독성 지표로 유용하였다. 비록, GC/MS를 이용하여 EDCs로 의심되는 물질이 검출될지라도, 처리되지 않은 침출수로부터의 2주간 노출시 vitellogenin는 유도되지 않았다. HIS는 희석된 침출수 (TOC 농도 107, 214mg/l)에 노출시 증가하였다. 침출수는 강한 복합독성을 가지고 있으므로, 오직 vitellogenin 변형만으로 침출수를 평가하기에는 어려움을 가지고 있으며, 생상성과 vitellogenesis는 2%농도에서 1-2주일간의 노출시 어떤 영향도 없었다. 고도처리된 침출수는 급성독성, 생산성과 vitellogenesis의 변화가 없었다. Our study aims to establish a practical monitoring system by using Japanese Medaka (Oryzias latipes) for drainage from a landfill site and the environment around k. The monitoring system consists of 2 phases. The first phase is water testes, and the second phase is ecological monitoring. In this paper, we reported the first phase. We carried out the first phase experiment using untreated leachate and treated leachate processed by 3 types of advanced processes (Electric dialysis, RO, and DT module system). Untreated and treated leachate from the processing plant, Wakamatsu-ku, Kitakyushu city, Japan was used. The test items were acute toxicity of embryo, juvenile and adult, fecundity, and vitellogenesis as an estrogenic activity. Toxicity of leachate increased according to TOC concentration. Juvenile of Medaka was a very useful indicator of the toxicity of the leachate. No vitellogenin was induced after 2 weeks exposure to untreated leachate, although suspected EDCs were detected by GC/MS or targeted analysis. HSI increased in the case of exposure to diluted leachate (TOC concentration, 107, 214 mg/l). As the leachate has strong complex toxicities, it is difficult to evaluate the leachate by vitellogenin inducing only. Fecundity and vitellogenesis ware not effected by exposure to 2% concentration of leachate for 1 and 2 weeks exposure. Advanced treated leachate induced no acute toxicity, vitellogenesis, and reproduction.
( Makiko Tanaka ),( Kazuhiko Fukatsu ),( Ryota Shinohara ),( Koji Arizono ),( Hiroshi Ishibashi ),( Masataka Hanashima ),( Sotarou Higuchi ),( Keijirou Tomoda ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.1
Our study aims to establish a practical monitoring system by using Japanese Medaka (Oryzias latipes) for drainage from a landfill site and the environment around it. The monitoring system consists of 2 phases. The first phase is water testes, and the second phase is ecological monitoring. In this paper, we reported the first phase. We carried out the first phase experiment using untreated leachate and treated leachate processed by 3 types of advanced processes (Electric dialysis, RO, and DT module system). Untreated and treated leachate from the processing plant, Wakamatsu-ku, Kitakyushu city, Japan was used. The test items were acute toxicity of embryo, juvenile and adult, fecundity, and vitellogenesis as an estrogenic activity. Toxicity of leachate increased according to TOC concentration. Juvenile of Medaka was a very useful indicator of the toxicity of the leachate. No vitellogenin was induced after 2 weeks exposure to untreated leachate, although suspected EDCs were detected by GC/MS or targeted analysis. HSI increased in the case of exposure to diluted leachate (TOC concentration, 107, 214 mg/1). As the leachate has strong complex toxicities, it is difficult to evaluate the leachate by vitellogenin inducing only. Fecundity and vitellogenesis ware not effected by exposure to 2% concentration of leachate for 1 and 2 weeks exposure. Advanced treated leachate induced no acute toxicity, vitelogenesis, and reproduction.
( Toshikazu Tanaka ),( Yoshihito Suda ),( Tomoyuki Kamenaga ),( Akira Saito ),( Takaaki Fujishiro ),( Koji Okamoto ),( Takafumi Hiranaka ) 대한슬관절학회 2022 대한슬관절학회지 Vol.34 No.-
Background: This study aims to assess the influence of intramedullary rods on the implantation positions of femoral components using Microplasty instrumentation in Oxford unicompartmental knee arthroplasty. We hypothesized that femoral components can be laterally implanted incorrectly when using intramedullary rods. Methods: This prospective study included all 45 consecutive patients (53 knees) who underwent Oxford unicompartmental knee arthroplasty surgery for anteromedial osteoarthritis or spontaneous osteonecrosis of the knee at our hospital during the study period. A custom-made toolset comprising a triangular caliper and circular trial bearings was used to evaluate the distance between the bearing and the vertical wall of the tibia implant (wall-bearing space) using the caliper at 90° flexion both with and without intramedullary rods. Results: The wall-bearing space was significantly larger when the intramedullary rod was used than when intramedullary rod was not used (1.8 ± 1.1 mm versus 3.4 ± 1.2 mm, P < 0.001). The mean difference of wall-bearing space with and without intramedullary rod was 1.6 ± 0.7 mm. Conclusions: Femoral components can be laterally implanted incorrectly by an average of 1.6 mm when using intramedullary rods. The wall-bearing space should be evaluated using trial components, and if the relationship is improper, it should be corrected before keel slot preparation.