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Biotechnical system based on fuzzy logic prediction for surgical risk classification using analysis of current-voltage characteristics of acupuncture points

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Journal of Integrative Medicine 2022年第3期20卷 252-264页

作者： Sergey Filist Riad Taha Al-Kasasbeh Olga Shatalova Nikolay Korenevskiy Ashraf Shaqadan Zeinab Protasova Maksim Ilyash Mikhail Lukashov Department of Biomedical Engineering Southwest State UniversityKursk 305040Russian Federation Electrical Energy Department Balqa Applied UniversityAmman 11937Jordan Civil Engineering Department Zarqa UniversityZarqa Governorate 13222Jordan Saint-Petersburg National Research University of Information Technologies Mechanics and OpticsSaint-Petersburg 197101Russian Federation Pediatric Faculty Kursk State Medical UniversityKursk 305041Russian Federation

Objective:This study aimed to develop expert fuzzy logic model to assist physicians in the prediction of postoperative complications of prostatic hyperplasia before ***:A method for classification of surgical risks was *** effect of rotation of the current–voltage characteristics at biologically active points(acupuncture points)was used for the formation of classifier *** effect determined reversible and non-reversible changes in electrical resistance at acupuncture points with periodic exposure to a sawtooth probe ***,the developed method was tested on the prediction of the success of surgical treatment of benign prostatic ***:Input descriptors were obtained from collected data including current-voltage characteristics of 5 acupuncture points and composed of 27 arrays feeding in the *** maximum diagnostic sensitivity of the classifier for the success of a surgical operation in the control sample was 88%and for testing data set prediction accuracy was 97%.Conclusion:The use of tuples of current-voltage characteristic descriptors of acupuncture points in the classifiers could be used to predict the success of surgical treatment with satisfactory *** model can be a valuable tool to support physicians’diagnosis.

关键词： Biologically active point Acupuncture current-voltage characteristic Descriptor Neural network

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Vortex pinning and rectification effect in a nanostructured superconducting film with a square array of antidot triplets

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Chinese Physics B 2018年第5期27卷 458-463页

作者： An He Cun Xue Youhe Zhou College of Science Chang'an UniversityXi'an 710064China School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi'an 710072China Key Laboratory of Mechanics on Disaster and Environment in Western China attached to the Ministry of Education of China and Department of Mechanics and Engineering SciencesLanzhou UniversityLanzhou 730000China School of Aeronautics Northwestern Polytechnical UniversityXi'an 710072China

We study the stability of vortices pinning and dynamics in a superconducting thin strip containing a square array of antidot triplets by using the nonlinear Ginzburg–Landau(GL)*** with the regular square array of circular holes,the vortices are no longer pinned inside the circular holes,but instead stabilized at the center of the antidot triplets depending on the geometry ***,the influences of the geometry parameters and the polarity of the applied current on the current–voltage(I–V)characteristics are also *** critical current for the sample turning into a normal state becomes smaller when the hole diameter D is smaller and the spacing B between the holes is *** to the asymmetric pinning sites,our numerical simulations demonstrate that the positive and negative rectified voltages appear alternately in the resistive state of the sample under an ac current of square pulses.

关键词： matching effect antidot triplets current-voltage characteristic critical current

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Formation of Large-Volume High-Pressure Plasma in Triode-Configuration Discharge Devices

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Plasma Science and Technology 2006年第2期8卷 185-189页

作者：江超王又青 State Key Laboratory of Laser Technology Huazhong University of Science and Technology Wuhan 430074 China Hubei Key Laboratory of Bioanalytical Technique Hubei Normal University Hubei 435002 China Department of Physics Hubei Normal University Hubei 435002 China State Key Laboratory of Laser Tehnology Huazhong University of Science and Technology Wuhan 430074 China

A ＂plane cathode micro-hollow anode discharge （PCHAD）＂ is studied in comparison with micro-hollow cathode discharge （MHCD）. A new triode-configuration discharge device is also designed for large-volume, high-pressure glow discharges plasma without glow-to-arc transitions, as well as with an anode metal needle, and a cathode of PCHAD. It has a ＂needle-hole＂ sustained glow discharge. Its discharge circuit employs only one power supply circuit with a variable resistor. The discharge experiments have been carried out in the air. The electrical properties and the photoimages in PCHAD, multi-PCHAD and ＂needle-hole＂ sustained discharge have been investigated. The electrical and the optical measurements show that this triode-configuration discharge device can operate stably at high-pressure, in parallel without individual ballasting resistance. And the electron density of the plasma is estimated to be up to 10^12cm^-3. Compared with the twosupply circuit system, this electrode configuration is very simple with lower cost in generating large-volume plasma at high pressures.

关键词： gas discharge high-pressure plasma plane-cathode current-voltage characteristic

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Fabrication and electrical properties of p-CuAlO_2/(n-, p-)Si heterojunctions

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Journal of Semiconductors 2014年第4期35卷 32-36页

作者：吴素贞邓赞红董伟伟邵景珍方晓东 Anhui Provincial Key Laboratory of Photonic Devices and Materials Anhui Institute of Optics and Fine MechanicsChinese Academy of Sciences Key Laboratory of Novel Thin Film Solar Cells Chinese Academy of Sciences

CuA1O2 thin films have been prepared by the chemical solution deposition method on both n-Si and p-Si substrates. X-ray diffraction analysis indicates that the obtained CuA1O2 films have a single delafossite structure. The current transport properties of the resultant p-CuA1O2/n-Si and p-CuA1O2/p-Si heterojunctions are investigated by current-voltage measurements. The p-CuA1O2/n-Si has a rectifying ratio of -35 within the applied voltages of -3.0 to ＋3.0 V, while the p-CuA1O2/p-Si shows Schottky diode-like characteristics, dominated in forward bias by the flow of space-charge-limited current.

关键词： CuAIO2 heterojunction current-voltage characteristic

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Electrical properties of structures based on varistor ceramics and polymer nanocomposites with carbon filler

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Journal of Advanced Dielectrics 2019年第3期9卷 19-24页

作者： A.S.Tonkoshkur A.V.Ivanchenko Department of Physics Electronics and Computer Systems Oles Honchar Dnipro National University72 Gagarin Ave.Dnipro 49010Ukraine

The characteristics of a two-layer structure on the basis of the layers of varistor ceramics and polymeric PPTC nanocomposite being in thermal contact for the purpose of using it as a limiter of constant voltage and long-term varying electrical overvoltages are analyzed.A theoretical model of such a structure has been developed,and its main electrical characteristics are *** is shown that the provision of the required output voltage limitation is performed by selecting the classification voltage of the varistor *** maximum current of the varistor layer required for heating the structure is determined by the intensity of heat transfer to the *** has established a satisfactory agreement between the theoretical and experimental electrical characteristics for the structure based on the layers used in commercial varistors and PPTC fuses.

关键词： Varistor ceramics polymer positive temperature coefficient(PPTC)nanocomposite overvoltage limiter current-voltage characteristic

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Boosting the Performance of Solar Cells with Intermediate Band Absorbers--The Case of ZnTe：O

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Journal of Energy and Power Engineering 2017年第6期11卷 417-426页

作者： Othmane Skhouni Ahmed E1 Manouni Hamza Bayad Bemabe Maria Laboratory of Atmospheric Physics Materials and Modeling (LPAMM) Department of Physics University Hassan II Faculty of Sciences and Technics Mohammedia 20650 Morocco Department of Applied Physics-ETSED Polytechnic University Valencia Carol de Vera s/n 46022 Spain

Abstract： This work reports on modeling IB （intermediate band） solar cells based on ZnTe：O semiconductor and determination of their photovoltaic parameters using SCAPS （solar cell capacitance simulator） software. A comparative study between photovoltaic performance of ZnTe and ZnTe：O based solar cells has been carried out. It has been found that the energy conversion efficiency r/, short-circuit current density Jsc, EQE （external quantum efficiency） and FF （fill factor） increased with increasing oxygen doping concentration Nt up to the shallow acceptor density NA and decreased when Nt was higher than NA. The open circuit-voltage Voc remained constant for N lower than the acceptor doping concentration NA and decreased for Nt higher than NA. The increase of , Jsc and FF is due to the fact that IB is fully empted, so sub-bandgap photons can be absorbed by hole photoemission process from the VB （valence band） to the IB. The decrease of r/, J, EQE and FF is attributed to overcompensation for the base doping NA making electron photoemission process from IB to the CB （conduction band） maximized. This indicates that there is a competition between oxygen doping and intrinsic acceptor defects. The optimal concentrations of oxygen and shallow acceptor carriers were found to be Nr 1015 cm-3 and NA 1014 cm3, The corresponding photovoltaic parameters were r/= 41.5%, J = 31.2 mA/cm2, Voc = 1.80 V and FF = 75.1%. Finally, the EQE spectra showed a blue shift of absorption edge indicating that the absorption process is extended to the sub-bandgap photons through lB.

关键词： ZnTe:O IB solar cell energy conversion efficiency current-voltage characteristic SCAPS.

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