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Optimization of Coupled Periodic Antenna Using Genetic Algorithm with Floquet Modal Analysis and MoM-GEC

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Open Journal of Antennas and Propagation 2022年第1期10卷 1-15页

作者： nader Ben Latifa Taoufik Aguili Laboratory of the Communication Systems National Engineering School of Tunis Le Belv&#233 dè re Tunis Tunisia

In this paper Genetic Algorithm has been integrated with Fouquet modal analysis to optimize radiation pattern of coupled periodic antenna. Floquet analysis is used with MoM-GEC (Moment-Generalized Equivalent Circuit) method to study a finite periodic array with uniform amplitude and linear phase distribution. This method is very advantageous for studying large antenna array since it considerably reduces the computation time and the number of operations. In this way, Genetic algorithm is introduced and combined with Floquet analysis to optimize the radiation pattern distribution of this coupled periodic antenna. The goal of the optimization is to provide a better radiation characteristic for the coupled periodic antenna with maximum side lobe level reduction.

关键词： Periodic Antenna Floquet Analysis MoM-GEC Method Genetic Algorithm

Coronary artery aneurysm:A review

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World Journal of Cardiology 2021年第9期13卷 446-455页

作者： Anthony Georges Matta Nabil Yaacoub Vanessa nader Nicolas Moussallem Didier Carrie Jerome Roncalli Department of Cardiology Toulouse University HospitalRangueilToulouse 31400France Faculty of Medicine Holy Spirit University of KaslikJounieh 961Lebanon Faculty of Pharmacy Lebanese UniversityHadath 961Lebanon Division of Cardiology Faculty of MedicineHoly Spirit University of KaslikJounieh 961Lebanon Department of Cardiology University Hospital RangueilToulouse 31059France Department of Cardiology University Hospital of Toulouse/Institute CardiometToulouse 31400France

Coronary artery aneurysm(CAA)is a clinical entity defined by a focal enlargement of the coronary artery exceeding the 1.5-fold diameter of the adjacent normal *** is the main cause in adults and Kawasaki disease in *** is a silent progressive disorder incidentally detected by coronary angiography,but it may end with fatal complications such as rupture,compression of adjacent cardiopulmonary structures,thrombus formation and distal *** pathophysiological mechanisms are not well ***,proteolytic imbalance and inflammatory reaction are involved in aneurysmal *** from previously published studies are scarce and controversial,thereby the management of CAA is individualized depending on clinical presentation,CAA characteristics,patient profile and physician *** therapeutic approaches including medical treatment,covered stent angioplasty,coil insertion and surgery were ***,we provide an up-to-date systematic review on the pathophysiology,complications and management of CAA.

关键词： Coronary artery aneurysm Complications Atherosclerosis Coronary artery ectasia

以金属硫酸氢盐为催化剂在无溶剂条件下高效合成3,4-二氢嘧啶-2(1H)-酮

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催化学报 2007年第7期28卷 591-595页

作者： Khodabakhsh NIKNAM Mohammad Ali ZOLFIGOL Zahra HOSSIENINEJAD nader DANESHVAR 波斯湾大学科学院化学系布-阿里大学化学学院

以金属硫酸氢盐M(HSO4)n(Ca(HSO4)2,Zn(HSO4)2和过硫酸氢钾制剂oxone○R)为催化剂催化醛、1,3-二羰基化合物和尿素进行缩合反应,在90℃及无溶剂的条件下高收率、一锅法合成了3,4-二氢嘧啶-2(1H)-酮.

关键词：金属硫酸氢盐 Biginelli反应二氢嘧啶无溶剂硫酸氢钙硫酸氢锌过硫酸氢钾制剂

Fabrication, Characterization and Thermophysical Property Evaluation of SiC Nanofluids for Heat Transfer Applications

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Nano-Micro Letters 2014年第2期6卷 178-189页

作者： nader Nikkam Mohsin Saleemi Ehsan B.Haghighi Morteza Ghanbarpour Rahmatollah Khodabandeh Mamoun Muhammed Bjrn Palm Muhammet S.Toprak Department of Materials and Nano Physics KTH Royal Institute of Technology Department of Energy Technology KTH Royal Institute of Technology

Nanofluids(NFs) are nanotechnology-based colloidal suspensions fabricated by suspending nanoparticles(NPs) in a base liquid. These fluids have shown potential to improve the heat transfer properties of conventional heat transfer fluids. In this study we report in detail on fabrication, characterization and thermo-physical property evaluation of SiC NFs, prepared using SiC NPs with different crystal structures,for heat transfer applications. For this purpose, a series of SiC NFs containing SiC NPs with different crystal structure(α-SiC and β-SiC) were fabricated in a water(W)/ethylene glycol(EG) mixture(50/50 wt%ratio). Physicochemical properties of NPs/NFs were characterized by using various techniques, such as powder X-ray diffraction(XRD), scanning electron microscopy(SEM), transmission electron microscopy(TEM),Fouriertransform infrared spectroscopy(FTIR), dynamic light scattering(DLS) and Zeta potential ***-physical properties including thermal conductivity(TC) and viscosity for NFs containing SiC particles(α- and β- phase) weremeasured. The results show among all suspensions NFs fabricated with α-SiC particles have more favorable thermo-physical properties compared to the NFs fabricated with β-*** observed difference is attributed to combination of several factors, including crystal structure(β- vs. α-), sample purity,and residual chemicals exhibited on SiC NFs. A TC enhancement of ～20% while 14% increased viscosity were obtained for NFs containing 9 wt% of particular type of α-SiC NPs indicating promising capability of this kind of NFs for further heat transfer characteristics investigation.

关键词： SiC nanoparticles Nanofluids Thermal conductivity Viscosity Thermo-physical property

Validation of the Persian version of the Compassionate Care Assessment Tool

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International Journal of Nursing Sciences 2021年第1期8卷 95-101,I0007页

作者： Aliakbar Vaisi-Raygani Asghar Dalvandi Kian Nourozi Abbas Ebadi Mahdi Rahgozar Rostam Jalali nader Salari Alireza Abdi Department of Nursing School of Nursing and MidwiferyKermanshah University of Medical SciencesKermanshahIran Nursing Department University of Social Welfare and Rehabilitation SciencesTehranIran Behavioral Sciences Research Center Life Style InstituteBaqiyatallah University of Medical SciencesTeheranIran

Objectives:The present study aimed to translate and determine the psychometric properties of the Persian version of the Compassionate Care Assessment Tool(CCAT)■.Methods:The study was carried out to translate and validate of the CCAT■.After securing permission from the designer of the tool and translating it,the psychometric properties were determined through examining face validity,construct validity,internal consistency,and test/retest *** regard to construct validity,confirmatory factor analysis was used so that 300 patients in internal and surgery wards were selected by a simple random sampling method from three *** were analyzed using SPSS(v.24.0)and LISREL statistical software version ***:The results of the confirmatory factor analysis supported the validity and reliability of the Persian version of the CCAT■and its four *** reliability of the tool and internal consistency were confirmed through test/retest method with two weeks’*** the two areas of importance and provision of compassionate care,Cronbach’sαcoefficient equaled to 0.918 and 0.933 and intraclass consistency equaled to 0.848 and 0.907 ***:The results showed that the Persian version of the CCAT©was adequately valid and reliable for Iranian *** the acceptable psychometric parameters of the tool,using it in future studies to measure importance and provision of compassionate nursing care to Iranian patients at internal and surgery wards is recommended.

关键词： Compassionate care Iran Nursing care Psychometrics Statistical factor analysis

Synthesis of Novel 3-Substituted PyridothienopyrimidineDerivatives with Biological Evaluation as Antimicrobial Agents

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Chemical Research in Chinese Universities 2016年第6期32卷 967-972页

作者： Farag A. E1-Essawy nader M. Boshta Ayman K. EI-Sawaf Areal A. Nassar Mohamed S. Khalafalah Preparatory Year Deanship Basic Science Department Prince Sattam Bin Abdulaziz University KSA Chemistry Department Faculty of Science Menoufia University Shebin EI-Koam Egypt Collage of Science and Humanitles Prince Sattam Bin Abdulaziz University KSA Faculty of Education for Girls Prince Sattam Bin Abdulaziz University KSA

Novel 3-substituted pyridothienopyrimidine derivatives have been synthesized via the reaction of 2-{7,9-dimethyl-4-oxopyrido[3′,2′：4,5]thieno[3,2-d]pyrimidin-3（4H）-yl}acetohydrazide（5） with a variety of activereagents and chemicals. Structures of the newly synthesized compounds were established based on spectral *** resulting pyridothienopyrimidine derivatives were evaluated for their possible antimicrobial activity and some ofthem represent a new class of potentially antimicrobial compounds, especially compounds 9 and 18 which displayedthe highest activity against Gram-positive bacteria, Gram-negative bacteria, and Fungi in MIC range of 0.12--1.95 μg/mL.

关键词： Nitrogen-containing heterocycle Pyridothienopyrimidine Thieno[2,3-b]pyridine Antimicrobial

Cost Optimization of Hybrid Solar, Micro-Hydro and Hydrogen Fuel Cell Using Homer Software

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Energy and Power Engineering 2015年第8期7卷 337-347页

作者： nader Barsoum Pearl Dianne Petrus Department of Electrical and Electronics Engineering Faculty of Engineering Universiti Malaysia Sabah Kota Kinabalu Malaysia

The main purpose of this paper is to present the analysis of cost optimization of Hybrid Renewable Energy System in remote area where grid connection is impossible. The analysis of hybrid system is modeled using HOMER software. Homer software is utilized as an assessment with modeling tools that simplifies the task of evaluating designs option for both off-grid and on-grid-connected system that allows load data and parameters to be inputted. In this paper, HOMER is used to find the most cost effective configuration among set of different simulated system to achieve the objective of least possible Levelized Cost of Energy (LCOE) for a given system under a propose load of 75 kW.

关键词： Cost Optimization LCOE HOMER

Partial IVC Clamping Improves Intraoperative Hemodynamic Parameters in the Rodent Portacaval Anastomosis Model

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Surgical Science 2011年第2期2卷 102-108页

作者： Mehrdad Asgeri Nisheet Waghray Kevin Mullen nader nader Henri Brunengraber Juan Sanabria 不详

The mechanisms involved in the development of hepatic encephalopathy still remain uncertain. The rodent portacaval shunt is a model that reproduces many of the pathological features observed in humans (1), but is a technically demanding exercise. While the traditional technique involves complete occlusion of the IVC, a c-clamp was fashioned to partially clamp the IVC thereby sustaining venous return and cardiac output. The aim of this study is to determine if the c-clamp technique provides greater hemodynamic stability and enhances the success rate of the portacaval shunt procedure. To answer this question, two experimental groups, c-clamp (N = 7) and cross-clamp (N = 7), and a sham group (N = 3) were included. Intraoperative hemodynamic parameters were recorded at specific times during the procedure. The c-clamp group showed greater hemodynamic stability when compared to the cross-clamp group. It was manifested by 1) significantly higher mean arterial blood pressure [63 (range, 8) vs 47 (range, 10) mmHg, p < 0.05], 2) faster capillary refill [4 (range, 2) vs 6 (range, 2) seconds, p < 0.05], 3) higher urinary output [0.18 (range, 0.02) vs 0.14 (range, 0.02) ml, p < 0.05], and 4) lower bowel wet-to-dry ratio [4.168 (range, 0.258) vs 4.731 (range, 0.271), p<0.05]. We conclude partial IVC clamping improves hemodynamic stability during the construction of the rat portacaval shunt model.

关键词： Portacaval Anastomosis Portosystemic Shunt Microvascular Surgery Ivc Clamping Surgical Technique Encephalopathy-Like Rodent Model

Simulation of Power Flow and Protection of a Limited Bus Grid System with Injected Solar Power

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Energy and Power Engineering 2013年第1期5卷 59-69页

作者： nader Barsoum Chai Zen Lee Department of Electrical and Computer Engineering Curtin University Sarawak Miri Malaysi Department of Electrical and Computer Engineering Curtin University Sarawak Miri Malaysia

In recent years, injection of renewable energy such as solar power into the power grid is increasing. However, inclusion of large-scale intermittent-type renewable energy requires better management in proper understanding of grid’s variable characteristics and its protection systems. In this paper, the investigation on overvoltage issue is illustrated. Overvoltage in distribution feeder occurs when large amount of solar power is injected at low power demand. Another investigation is on false operation of overcurrent relays due to reverse power to the 33 kV loads. The potential solutions to the two issues are illustrated in the small-sized power grid system using bi-directional inverters on AC buses in charging battery banks and adjusting the relay current settings. The benefits of solar power injection are illustrated whereby output power from generators is decreased and transmission losses are reduced. Electrical Transient Analysis Program (ETAP) was used for investigations.

关键词： Grid Systems Solar Power Overvoltage Overcurrent Relay Bi-Directional Inverter Relay Current Setting