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Human Errors Monitoring in Electrical Transmission Networks

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Journal of Energy and Power Engineering 2012年第3期6卷 425-428页

作者： gheorghe Grigoras Cecilia Barbulescu gheorghe Cartina Daniela Comanescu Faculty of Electrical Engineering Technical University Gheorghe Asachi Iasi 700050 Romania The National Power Grid Company Bucharest 030786 Romania The ＂Hidroelectriea ＂ Company Bistrita Hydropower Subsidiary Piatra Ne amt 610125 Romania

The electrical transmission networks are complex systems that are commonly run near their operational limits. Such systems can undergo major disturbances that have serious consequences. Individually, these disturbances can be attributed to specific causes, such as lightning strikes, ice storms, equipment failure, shorts resulting from untrimmed trees, excessive customer demand, or human errors. In the paper, the human errors from electrical transmission networks of Romanian Power Grid Company over period of 10 years are analyzed. It is hoped that obtained results will provide engineers a better understanding so they can cater to the needs of the human operators when to implement new interfaces for network monitoring tasks, not for the other technical objectives.

关键词： Electrical transmission monitoring human errors accidental events clustering techniques.

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关于最佳风场和风轮尺寸的研究

太阳能学报 1993年第1期14卷 77-84页

作者： gheorghe Olaru Adriau Radu 罗马尼亚电工研究所布加勒斯特

为了降低风力发电成本,使其具有较好的经济性,应选择最佳的风场和与之匹配的风力机。以安装在罗马尼亚加拉茨(Galati)和苏利纳(Sulina)的10kW和1000kW风力发电机为例进行了分析讨论。

关键词：风力发电风电场风力发动机风轮

ANTIBACTERIAL ACTIVITY OF SINGLE AND MIXED AMMONIUM AND PHOSPHONIUM SALTS GRAFTED ON "GEL-TYPE" STYRENE-DIVINYLBENZENE COPOLYMERS

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Chinese Journal of Reactive Polymers 2000年第2期9卷 118-128页

作者： Adriana POPA Corneliu-Mircea DAVIDESCU Smaranda ILIESCU gheorghe ILIA gheorghe DEHELEAN Lavinia MACARIE Radu TRIF Rumanian Academy Institute of Chemistry24 M.Viteazul Str.1900 TimisoaraRoumania. "Politehnica"University Faculty of Industrial Chemistry and Enviromental EngineeringPhysical Chemistry DepartmentBul.V.Parvan 61900 TimisoaraRoumania. Banat University of Agricultural Science and Veterinary Medicine Microbiology DepartmentCalea Aradului 1191900 TimisoaraRoumania

A systematic study on the synthesis and antibacterial activity of the quaternary "onium" salts grafted on an insoluble "gel-type" styrene-7% divinylbenzene copolymer by polymer-analogous reactions is showed. Antibacterial activity of quaternary ammonium and/or phosphonium salts grafted on polymer-supports has been studied against Staphylococcus aureus and Escherichia coli. A wide variety of "onium" salts bound to macromolecular supports with different quaternary groups and different quaternary chain length substituents were examined. The antibacterial activity of mixed "onium" salts increases as a consequence of the association of ammonium and phosphonium salts grafted on the same polymeric support.

关键词： Antibacterial activity Staphylococcus aureus Escherichia coli Quaternary ammonium and/or phosphonium salts grafted on polymer-supports`

Auto-Scale Factor Circuit Realisation for MIMO Hardware Simulator

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Circuits and Systems 2013年第4期4卷 369-385页

作者： Bachir Habib gheorghe Zaharia Ghais El Zein Institute of Electronics and Telecommunications of Rennes (IETR) Rennes France

A hardware simulator reproduces the behavior of the radio propagation channel, thus making it possible to test “on table” the mobile radio equipments. The simulator can be used for LTE and WLAN 802.11ac applications, in indoor and outdoor environments. In this paper, the input signals parameters and the relative power of the impulse responses are related to the relative error and SNR of the output signals. After analyzing the influence of these parameters on the output error and SNR, an algorithm based on an Auto-Scale Factor (ASF) is analyzed in details to improve the precision of the output signals of the hardware simulator digital block architecture. Moreover, the circuit needed for the validation of this algorithm has been introduced, verified and realized. It is shown that this solution increases the output SNR if the relative powers of the impulse responses are attenuated. The new architecture of the digital block is presented and implemented on a Xilinx Virtex-IV FPGA. The occupation on the FPGA and the accuracy of the architecture are analyzed.

关键词： Hardware Simulator FPGA MIMO Radio Channel 802.11ac LTE

MIMO Hardware Simulator: Algorithm Design for Heterogeneous Environments

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Circuits and Systems 2013年第2期4卷 217-226页

作者： Bachir Habib gheorghe Zaharia Ghais El Zein Institute of Electronics and Telecommunications of Rennes Rennes France

A wireless communication system can be tested either in actual conditions or by a hardware simulator reproducing actual conditions. With a hardware simulator it is possible to freely simulate a desired type of a radio channel and making it possible to test “on table” mobile radio equipment. This paper presents an architecture for the digital block of a hardware simulator of MIMO propagation channels. This simulator can be used for LTE and WLAN IEEE 802.11ac applications, in indoor and outdoor environments. However, in this paper, specific architecture of the digital block of the simulator is presented to characterize a scenario indoor to outdoor using TGn channel models. The switching between each environment in the scenario must be made in a continuous manner. Therefore, an algorithm is designed to pass from a considered impulse response in the environment to another in other environment. The architecture of the digital block of the hardware simulator is presented and implemented on a Xilinx Virtex-IV FPGA. Moreover, the impulse responses are transferred into the simulator. The accuracy, the occupation on the FPGA and the latency of the architecture are analyzed.

关键词： Hardware Simulator MIMO Radio Channel FPGA 802.11ac Signal Time-Varying TGn Channel Models

The Use of Drones in Forestry

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Journal of Environmental Science and Engineering(B) 2016年第11期5卷 557-562页

作者： Tiberiu Paul Banu gheorghe Florian Borlea Constantin Banu Department of Sustainable Development Banat's University of Agricultural Sciences and Veterinary Medicine "King Michael I ofRomania" Timioara 300645 Romania Department of Forestry Banat's University of Agricultural Sciences and Veterinary Medicine "King Michael I of Romania"Timioara 300645 Romania

Recently, drones have found applicability in a variety of study fields, one of these being forestry, where an increasing interest is given to this segment of technology, especially due to the high-resolution data that can be collected flexibly in a short time and at a relatively low price. Also, drones have an important role in filling the gaps of common data collected using manned aircraft or satellite remote sensing, while having many advantages both in research and in various practical applications particularly in forestry as well as in land use in general. This paper aims to briefly describe the different approaches of applications of UAVs （Unmanned Aircraft Vehicles） in forestry, such as forest mapping, forest management planning, canopy height model creation or mapping forest gaps. These approaches have great potential in the near future applications and their quick implementation in a variety of situations is desirable for the sustainable management of forests.

关键词： Drones UAV remote sensing forest management.

Radiation protection for the interventional cardiologist:Practical approach and innovations

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World Journal of Cardiology 2022年第1期14卷 1-12页

作者： Alejandro Gutierrez-Barrios Dolores Cañadas-Pruaño Inmaculada Noval-Morillas Livia gheorghe Ricardo Zayas-Rueda German Calle-Perez Department of Cardiology Hospital Puerta del MarCadiz 11009Spain

Use of ionizing radiation during cardiac catheterization interventions adversely impacts both the patients and medical *** recent years,radiation dose in cardiac catheterization interventions has become a topic of increasing interest in interventional cardiology and there is a strong interest in reducing radiation exposure during the *** review presents the current status of radiation protection in the cardiac catheterization laboratory and summarizes a practical approach for radiation dose management for minimizing radiation *** review also presents recent innovations that have clinical potential for reducing radiation during cardiac interventions.

关键词： Radiation Cardiac catheterization Quality improvement Cathlab Ionizing radiation

Digital image display

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Effect of a Guaiazulene-Containing Ointment on Nipple and Areola Area Health of Women

1000年

作者： Berbecel gheorghe.

来源：畅想之星图书光盘版（南... 评论

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Journal of Cosmetics, Dermatological Sciences and Applications 2016年第4期6卷 167-173页

作者： Cristian Furau Harry Grossmann gheorghe Furau Jürgen Vormann Department of Gynecology Medical Faculty Western University "Vasile Goldis" Arad Romania MCS Pharma GmbH Hanau Germany Institute for Prevention and Nutrition Ismaning/Munich Germany

Guaiazulene-containing ointments are routinely used for breast care during breastfeeding. It has also been proposed that nipple and areola area of non-breastfeeding women might benefit from use of this azulene. In a study with 51 women, it was investigated whether the use of a guaiazulene-containing ointment (Garmastan?) would improve look, elasticity and sensitivity of nipple and areola area within 4 month daily application. About one third of study participants reported improvement in sensitivity, elasticity and look of the investigated area of the breast. Assessment of doctors revealed a clear improvement in elasticity and sensitivity of the nipple and areola area over study period. Nearly all women wished to continue the use of the ointment after end of the study. In conclusion, the use of Garmastan? ointment is able to improve sensitivity and elasticity of the nipple and areola area of the breasts of non-breastfeeding women.

关键词： Guaiazulene-Containing Ointment Breast Care Breastfeeding