• Title/Summary/Keyword: electric potential

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Differences in electric potential of meridian system -Comparing electrical potentials of patients with Lumbago due to the kidney deficiency- (신허요통 환자의 12 경맥 전위측정 연구)

  • Nam, Bong-Hyun;Choi, Hwan-Soo
    • Korean Journal of Oriental Medicine
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    • v.9 no.1
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    • pp.103-111
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    • 2003
  • Objectives : Assuming that the characteristic of meridian system has been similar to this of electric potentials in human body and that measurements of electric potential at well(井穴) and sea(合穴) points in branches of the twelve meridians(WSBTM) will be representative of measurements of the twelve meridians, to measure the electric potentials of 16 patients with Lumbago due to the kidney deficiency(腎虛腰痛, LKD), to find out the characteristic of meridian system in patients with LKD. Methods : Electric potentials of welt and sea points in the meridians in twenty one patients with the pain in the lion diagnosed as LKD were repeatedly measured by physiograph(PowerLab). Measurements of those electrical potentials were analyzed by factor analysis. Results : The electric potentials of WSBTM at the left side were divided into five factors. On the other hand those at the right side Were divided into t1vee factors. Conclusions : In conclusion, their electrical potentials at the left and right side were four different factors search side. Thus electrical potentials of welt and sea points might be the representative meridian to show their characteristics.

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Bridge-edges Mining in Complex Power Optical Cable Network based on Minimum Connected Chain Attenuation Topological Potential

  • Jiang, Wanchang;Liu, Yanhui;Wang, Shengda;Guo, Jian
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.15 no.3
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    • pp.1030-1050
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    • 2021
  • The edges with "bridge characteristic" play the role of connecting the communication between regions in power optical cable network. To solve the problem of mining edges with "bridge characteristic" in provincial power optical cable network, the complex power optical cable network model is constructed. Firstly, to measure the generated potential energy of all nodes in n-level neighborhood local structure for one edge, the n-level neighborhood local structure topological potential is designed. And the minimum connected chain attenuation is designed to measure the attenuation degree caused by substituted edges. On the basis of that, the minimum connected chain attenuation topological potential based measurement is designed. By using the designed measurement, a bridge-edges mining algorithm is proposed to mine edges with "bridge characteristic". The experiments are conducted on the physical topology of the power optical cable network in Jilin Province. Compared with that of other three typical methods, the network efficiency and connectivity of the proposed method are decreased by 3.58% and 28.79% on average respectively. And the proposed method can not only mine optical cable connection with typical "bridge characteristic" but also can mine optical cables without obvious characteristics of city or voltage, but it have "bridge characteristic" in the topology structure.

Exploring Socially Responsible Corporate Management & Policy Preparation for Electric Vehicle Adoption & Global Sustainability

  • Yooncheong CHO
    • The Journal of Economics, Marketing and Management
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    • v.11 no.3
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    • pp.1-10
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    • 2023
  • Purpose: The purpose of this study is to explore how to apply socially responsible corporate management and public policy to perceive awareness and adoption of electric vehicles for global sustainability. This study examined i) how perceived factors such as economic, environment, convenience, uncertainty, and efficiency factors differ based on experiences of electric vehicles, ii) how actual and potential customers perceive management and policy issues on electric vehicles differently, iii) how proposed factors including policy planning for the management of electric vehicle, prospect of electric vehicles, and socially responsible corporate activities affect overall attitudes toward electric vehicles? iv) how overall attitudes affect growth of electric vehicle industry and development of automobile industry? Research design, data and methodology: This study conducted an online survey and applied t-test, ANOVA, factor and regression analysis. Results: This study found that policy planning for the management of electric vehicles, prospect of electric vehicles, and corporate activities affect overall attitudes toward electric vehicles and actual and potential customers showed mean differences on management and policy on electric vehicles. Conclusions: This study provides managerial and policy implications. This study suggests promoting policies for better adoption of electric vehicles and regulatory policies to enhance global sustainability and prospect of electric vehicles.

Effects of Electric Current and Potential on the Electrokinetic Removal of Heavy Metals from an Abandoned Mine Tailings

  • Shin, Hyun-Moo;Lee, Chang-Eun
    • Journal of Environmental Science International
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    • v.13 no.2
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    • pp.149-159
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    • 2004
  • In the removal of heavy metals from the mine deposit using electrokinetic processes, the effects of operation under both constant current and constant potential conditions were estimated. The results of soil pH distributions for DDW-20 V and DDW-100 mA cases after the electrokinetic remediation tests were observed. In the former case, soil pH was not much changed and kept to almost constant value just little higher than initial soil pH of 3.52, except near the cathode, which was about pH 5. While in the latter case, soil pHs of anode and the cathode regions were less than pH 3 and about 6, respectively. The electroosmotic flow to the cathode increased rapidly till 10 hrs and decreased steadily and then maintained to constant rate until the end of operation at constant current condition. Electric potential gradient was continuously increased to as much as 34.375 V/cm. At the steady state, values of the apparent electric conductivity for DDW-20 V and DDW-100 mA were around 40 ${\mu}\textrm{s}$/cm and 30 ${\mu}\textrm{s}$/cm, respectively. In the DDW-100mA test, Cu, Cd, and Zn except Pb showed the tendency of moving toward the cathode. While in the DDW-20 V case, it was observed that Cu, Zn, and Pb except Cd were not moved to any directions. The results of the tests demonstrated that the electrokinetic soil remediation process could be operated better under constant current condition than constant electric potential condition.

A Study on the Characteristic of Electric-Shock Mechanism in the Water (수중에서의 감전 메카니즘 특성에 관한 연구)

  • Do, Bum-Sung
    • Journal of the Korean Society of Hazard Mitigation
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    • v.7 no.5
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    • pp.111-118
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    • 2007
  • Recently electric shock accidents constantly occurs caused by the street lamps. Especially the chance of electric shock accident is high when the street lamp submerges by heavy rainfall. Electric shock accident occurs mostly on the low voltage facilities of 220V, but the awareness of its danger is insufficient. The electric shock accident by street lamp voltage of 220V is very dangerous because it is installed in the street which is easily in contact with people. But there are insufficient investigation concerning the affect to hwnan body of underwater electric potential distribution as the distance changes from the leakage object in case of short circuit. In this thesis, the analysis will be made on the affect of underwater Earth leakage to human body and electric potential distribution in underwater, and to draw a comparison between electric shock channel and electric shock mechanism by experimenting on the affect to human body of underwater electric shock as the distance changes from the leakage object.

A Study on the Characteristics of Electric Shock in Water due to the Leakage of Submerged Electric Facility (침수된 전기설비의 누전으로 인한 수중에서의 감전특성에 관한 연구)

  • 김두현;강동규
    • Journal of the Korean Society of Safety
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    • v.17 no.3
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    • pp.61-65
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    • 2002
  • A study on the characteristics of electric shock in fresh water due to the leakage of submerged electric facility is conducted by using a reduced scale model at a scale of 1:10 in laboratory. Electric potential as a function of distance from leakage source, type of the leakage source, magnitude of the source voltage, submerged depth and diameter of a copper rod electrode is measured. On the basis of safety standard, separation for guarantee of safety is determined by the measured potential. Also supposing that body resistance is 500[$\Omega$], the human reaction was estimated by calculating body current for some shock duration. Thus, in this paper, the hazard of the electric shock is assessed by introducing representative safety factors, body voltage and body current due to leakage source.

Optimal Design of Preform in Hot forging (열간 단조에서의 최적 예비형상 설계)

  • Lee, S.R.;Lee, Y.G.;Park, C.H.;Yang, D.Y.
    • Proceedings of the KSME Conference
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    • 2000.04a
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    • pp.780-785
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    • 2000
  • The equi-potential lines designed in the electric field are introduced to find the preform shape in axisymmetric hot forging. The equi-potential lines generated between two conductors of different voltages show similar trends of the minimum work paths between the undeformed shape and the deformed shape. Base on this similarity, the equi-potential lines obtained by arrangement of the initial and final shapes are utilized fur the design of preform, and then the artificial neural network is used to find the range of initial volume and potential value of the electric field.

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Simultaneous uptake of arsenic and lead using Chinese brake ferns (Pteris vittata) with EDTA and electrodics

  • Butcher, David J.;Lim, Jae-Min
    • Analytical Science and Technology
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    • v.32 no.1
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    • pp.1-6
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    • 2019
  • Chinese brake fern (Pteris vittata) has potential for application in the phytoremediation of arsenic introduced by lead arsenate-based pesticides. In this study, Chinese brake ferns were used to extract arsenic, mainly in field and greenhouse experiments, and to assess the performance of simultaneous phytoaccumulation of arsenic and lead from homogenized soil in the greenhouse, with the application of EDTA and electric potential. The ferns have been shown to be effective in accumulating high concentrations of arsenic, and extracting both arsenic and lead from the contaminated soil, with the addition of a chelating agent, EDTA. The maximum increase in lead accumulation in the ferns was 9.2 fold, with a 10 mmol/kg addition of EDTA. In addition, the application of EDTA in combination with electric potential increased the lead accumulation in ferns by 10.6 fold at 5 mmol/kg of EDTA and 40 V (dc), compared to controls. Therefore, under application of EDTA and electric potential, Chinese brake fern is able to extract arsenic and lead simultaneously from soil contaminated by lead arsenate.

Differences in Electric Potential of Meridian System - Comparing Electric Potentials of Patients with Arthroncus of Knee - (슬안풍 환자의 십이경맥 전위측정 연구)

  • Nam, Bong-Hyun;Choi, Hwan-Soo
    • Korean Journal of Acupuncture
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    • v.21 no.4
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    • pp.21-30
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    • 2004
  • Objectives : Assuming that the characteristic of meridian system has been similar to this of electric potentials in human body and that measurements of electric potential at well(井穴) and sea(合穴) points in branches of the twelve meridians(WSBTM) will be representative of measurements of the twelve meridians, to measure the electric potentials of 13 patients with Arthroncus of Knee(슬안풍<膝眼風>, AK), to find out the characteristic of meridian system in patients with AK. Methods : Electric potentials of well and sea points in the meridians in twenty one patients with the pain in the lion diagnosed as AK were repeatedly measured by physiograph(PowerLab). Measurements of those electric potentials were analyzed by factor analysis. Results : Their electric potentials at the left and right side were factors which are different from each side. In the left side, Factor 1 included Small Intestine, Pericardium, Spleen, Kidney meridian, and Factor 2 included Heart, Tripple Energizer, Bladder, Liver meridian. Factor 3 included Large Intestine, Stomach, Gall bladder meridian, and Factor 4 included Lung meridian. In the right side, Factor 1 included Heart, Pericardium, Tripple Energizer, Spleen, Bladder meridian and Factor 2 included Lung, Liver, Gall bladder meridian. Factor 3 included Small Intestine, Stomach, Kidney meridian and Factor 4 included Large Intestine Meridian. Conclusions : The electric potentials of AK differ from those of normal bodies as well as of bodies with other diseases-shoulder lesions, waist lesions, Lumbago due to Strain and Contusion-. Thus electric potentials of well and sea points might be the representative meridian to show their characteristics.

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