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4-[α-(苯甲酰甲基)苄基]-1,3-二苯基-2-吡唑啉-5-酮的合成与反应

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化学学报 1985年第12期43卷 1215-1221页

作者： EL-SHEKEIL,A.G. hassan,m.a. BABAQI SHIBA,S.A. Chemistry Department Faculty of Science Sena's University Yemen Arab Republic Chemistry Department Faculty of Science Sena's University Yemen Arab Republic A.S.Chemistry Department Faculty of Science Sena's University Yemen Arab Republic Chemistry Department Faculty of Science Sena's University Yemen Arab Republic

1,3-二苯基-2-吡唑啉-5-酮（1）对查而酮（苯丙烯酰苯,2）的碱性催化加成,生成相应的michael加成物,4-[α-（苯甲酰甲基）苄基]-1,3-二苯基-2-吡唑啉-5-酮（3）,3在沸醇中经肼或羟胺处理得腙或肟（4）,4经沸乙酸处理生成1和2的吡唑啉衍... 详细信息

1,3-二苯基-2-吡唑啉-5-酮（1）对查而酮（苯丙烯酰苯,2）的碱性催化加成,生成相应的michael加成物,4-[α-（苯甲酰甲基）苄基]-1,3-二苯基-2-吡唑啉-5-酮（3）,3在沸醇中经肼或羟胺处理得腙或肟（4）,4经沸乙酸处理生成1和2的吡唑啉衍生物（5）的混合物,3的还原产物为相应的仲醇（6a～c）.Grignard试剂与3反应生成叔醇（6d～1）,新化合物的结构经元素分析,IR,1H和13C NmR证明。

关键词： OCH 吡唑啉甲基链烷基苯甲酰 ppm 二苯基二芳基苄基苯甲基芳基反应

1-芳基-3-(5-氯-1,3-苯基-1H-4-吡唑基)-2,3-环氧-1-丙酮的新重排反应

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化学学报 1988年第7期46卷 724-726页

作者： El-Shekeil,A.G. Babaqi,A.S. hassan,m.a. Shiba,S.A. Department of Chemistry Faculty of Science Sana’a UniversitySana’aYemen Chemistry Department Faculty of ScienceAin-Shams UniversityAbbasiaEgypt

本文报道标题化合物在碱作用下重排成为3的反应,提出了反应机理.用IR,^(1)H NmR,^(13)C NmR和微量分析证实了新化合物的结构.

关键词： IR NaOH NmR

An Online Fake Review Detection Approach Using Famous machine Learning Algorithms

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Computers, materials & Continua 2024年第2期78卷 2767-2786页

作者： Asma hassan Alshehri Department of Computer Sciences College of Computer Engineering and SciencesPrince Sattam bin Abdulaziz UniversityAl KharjSaudi Arabia

Online review platforms are becoming increasingly popular,encouraging dishonest merchants and service providers to deceive customers by creating fake reviews for their goods or *** Sybil accounts,bot farms,and real account purchases,immoral actors demonize rivals and advertise their *** academic and industry efforts have been aimed at detecting fake/fraudulent product or service evaluations for *** primary hurdle to identifying fraudulent reviews is the lack of a reliable m.a.s to distinguish fraudulent reviews from real *** paper adopts a semi-supervised machine learning method to detect fake reviews on any website,among other *** reviews are classified using a semi-supervised approach(PU-learning)since there is a shortage of labeled data,and they are ***,classification is performed using the machine learning techniques Support Vector machine(SVm.a.d Nave *** performance of the suggested system has been com.a.ed with standard works,and experimental findings are assessed using several assessment metrics.

关键词： Security fake review semi-supervised learning mL algorithms review detection

model Reference Adaptive Controller for Simultaneous Voltage and Frequency Restoration of Autonomous AC microgrids

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Journal of modern Power Systems and Clean Energy 2024年第4期12卷 1194-1202页

作者： Farahnaz Ahmadi Yazdan Batmani hassan Bevrani Department of Electrical Engineering University of KurdistanSanandajIran

In an autonomous droop-based microgrid,the sys-tem voltage and frequency(VaF)are subject to deviations as load *** the existence of various control methods aimed at correcting system frequency deviations at the second-ary control level without any communication network,the chal-lenges associated with these methods and their abilities to simul-taneously restore microgrid VaF have not been fully *** this paper,a multi-input multi-output(mImO)model ref-erence adaptive controller(m.a.)is proposed to achieve VaF restoration while accurate power sharing among distributed generators(DGs)is *** proposed m.a.,without any communication network,is designed based on two meth-ods:droop-based and inertia-based *** the microgrid,the suggested design procedure is started by defining a model reference in which the control objectives,such as the desired settling time,the maximum tolerable overshoot,and steady-state error,are ***,a feedback-feedforward con-troller is established,of which the gains are adaptively tuned by some rules derived from the Lyapunov stability *** some simulations in mATLAB/SimPowerSystem Tool-box,the proposed m.a. demonstrates satisfactory perfor-mance.

关键词： AC microgid communication-free secondary control droop-based method inertia-based method model reference adaptive controller(m.a.) simultaneous voltage and frequency restoration

Kaoline-based catalyst for a high stability desulfurization of sour heavy naphtha in a three-phase oscillatory baffled reactor

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Particuology 2024年第1期84卷 249-260页

作者： hassan m.Hmood Saba A.Gheni Safaa m.R.Ahmed mudheher m.a.i Hamid Yonis Saleh mohammed H.mohammed Awad E.mohammed marwan A.mahomood Hiba R.mohammed Ahmed A.hassan Adam Harvey North Refineries Com.a.y Ministry of OilIraq Chemical Engineering Department Tikrit UniversityIraq ministry of Oil Iraq AL-Hawija Technical Institute Northern Technical UniversityMoselIraq School of Engineering Newcastle UniversityUK

To meet the rapidly increasing demand for energy and the dramatic depletion of conventional crude oil,it is imperative to utilize sour *** no coke being produced,oxidative desulfurization(ODS)of naphtha lowers its sulfur content and average molecular *** this article,we outline a method for heavy naphtha non-extractive ODS using a very stable *** technique involves the use of a solid catalyst with oxygen gas as the *** necessitated relatively high mixing intensities;hence a three-phase Oscillatory Baffled Reactor(OBR)was *** catalyst was based on the zeolite ZSm-5,prepared from natural kaolin by a series of delamination and activation steps and impregnated with Fe.A TiO2 nanolayer was applied,using the sol-gel method,to prevent rapid *** reactor performance was evaluated to minimize the sulfur content in the naphtha *** to the protective coating,the sulfur conversion stabilized at 90%.The results of this work establish the use of natural clay-based catalysts in a continuous,three-phase ODS,particularly with regard to proving long-term *** also showed that modest ODS can be achieved using an environmentally friendly oxidant,at mild operating conditions,whilst maintaining stability.

关键词： Natural kaoline Desulfurization Three-phase Oscillatory baffled reactor

Assessment of liquefaction potential based on shear wave velocity:Strain energy approach

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Journal of Rock mechanics and Geotechnical Engineering 2024年第9期16卷 3733-3745页

作者： moham.a. hassan Baziar mahdi Alibolandi School of Civil Engineering Iran University of Science and TechnologyTehran16846-13114Iran

Liquefaction assessment based on strain energy is significantly superior to conventional stress-based *** main purpose of the present study is to investigate the correlation between shear wave velocity and strain energy capacity of silty *** dissipated energy until liquefaction occurs was calculated by analyzing the results of three series of comprehensive cyclic direct simple shear and triaxial tests on Ottawa F65,Nevada,and Firoozkuh sands with varying silt content by weight and relative ***,the shear wave velocity of each series was obtained using bender element or resonant column ***,for the first time,a liquefaction triggering criterion,relating to effective overburden normalized liquefaction capacity energy(WL=s’c)to effective overburden stresscorrected shear wave velocity(eVs1)has been *** accuracy of the proposed criteria was evaluated using in situ *** results confirm the ability of shear wave velocity as a distinguishing parameter for separating liquefied and non-liquefied soils when it is calculated against liquefaction capacity energy(WL=s’c).However,the proposed WL=s’c-Vs1 curve,similar to previously proposed cyclic resistance ratio(CRR)-Vs1 relationships,should be used conservatively for fields vulnerable to liquefaction-induced lateral spreading.

关键词： Liquefaction Strain energy capacity Shear wave velocity Cyclic triaxial test Cyclic direct simple shear test Resonant column test Bender element test

Ballistic design and testing of a composite armour reinforced by CNTs suitable for armoured vehicles

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Defence Technology（防务技术） 2024年第2期32卷 173-195页

作者： Evangelos Ch.Tsirogiannis Evangelos Daskalakis mohamed H.hassan Abdalla m.Omar Paulo Bartolo EODH SA Research and Development DepartmentLakkoma Chalkidikis63080Greece School of mechanical Aerospace and Civil EngineeringUniversity of ManchesterManchesterM139PLUK Singapore Centre for 3D Printing School of Mechanical and Aerospace EngineeringNanyang Technological University639798Singapore

This paper is investigating the use of composite armour reinforced by nanomaterials, for the protection of light armoured(LAV) and medium.a.moured military vehicles(mAV), and the interaction between the composite materials and high-performance ballistic projectiles. Four armour materials, consisted of front hybrid fibre reinforced polymer cover layer, ceramic strike-face, fibre reinforced polymer intermediate layer and the metal matrix composite reinforced backplate, were manufactured and assembled by adhesive technology. The proposed laminated protection system is suitable for armoured ground vehicles;however, it could be used as armour on ground, air and naval platforms. The design of the protection system, including material selection and thickness, was elaborated depending on the performance requirements of Level 4 + STANAG 4569 military standard(projectile 14.5 mm × 114 mm.a.I B32) and especially on a design philosophy which is analysed with the specifications. The backplate of this new composite is a hybrid material of metal matrix Composite(mmC) reinforced with carbon nanotubes(CNTs), manufactured with the use of powder metallurgy technique. The composite backplate material was morphologically, mechanically and chemically analysed. Results show that all plates are presenting high mechanical properties and ballistic characteristics, com.a.ed to commonly used armour plates. Real military ballistic tests according to AEP-STANAG 4569 were carried out for the total composite armour systems. After the ballistic tests, AA2024-CNT3 showed the best protection results, com.a.ed with the other plates(AA2024-CNT1 and AA2024-CNT2), with the projectile being unable to fully penetrate the composite plate.

关键词： Passive armour protection Protective armour Ballistic performance Hybrid composites Vehicle protection

Distributed Hybrid model Predictive Secondary Control of DC microgrids with Random Communication Disorders

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Journal of modern Power Systems and Clean Energy 2024年第3期12卷 925-935页

作者： meysam Yaribeygi Zeinab Karami Qobad Shafiee hassan Bevrani the Department of Electrical Engineering K.N.Toosi University of TechnologyTehranIranand he is now with the Sportradar CompanyTrondheimNorway the Department of Engineering Cybernetics(ITK) Norwegian University of Science and Technology(NTNU)TrondheimNorway the Smart/micro Grids Research Center Department of Electrical EngineeringUniversity of KurdistanSanandajIran

A reliable and robust communication network is essential to exchange information between distributed generators(DGs)and accurately calculate their control actions in microgrids(mGs).However,the integration of the communication network and mGs poses challenges related to the flexibility,availability,and reliability of the ***,random communication disorders such as time delays and packet loss can negatively im.a.t the system ***,it is essential to design a suitable secondary controller(SC)with a fast dynamic response to restore voltage and appropriate powersharing,while ensuring that the effects of random communication disorders are *** this regard,an optimal distributed hybrid model predictive secondary control method is presented in this *** simulations are carried out in a mixed simulation environment based on mATLAB and OmNET++,by considering IEEE 802.11(Wi Fi)using the recently developed Internet networking(INET)*** the implemented application layer,the recovery Unit is responsible for reducing the im.a.t of random communication *** effectiveness and performance of the proposed method in com.a.ison with a conventional model predictive control are verified by simulation results.

关键词： microgrid model predictive control random communication disorder secondary control

An Adaptive Data-driven method Based on Fuzzy Logic for Determining Power System Voltage Status

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Journal of modern Power Systems and Clean Energy 2024年第3期12卷 707-718页

作者： Sirwan Shazdeh Hêmin Golpîra hassan Bevrani the SmGRC University of KurdistanSanandajIran Power Systems modeling&Simulation Lab Department of Electrical EngineeringUniversity of KurdistanKurdistanSanandaj 66177-15175Iran

This paper proposes an adaptive method based on fuzzy logic that utilizes data from phasor m.a.urement units(PmUs) to assess and classify generating-side voltage trajectories. The voltage variable and its associated derivatives are used as the input variables of a fuzzy-logic block. In addition, the voltage trajectory is com.a.ed with the pre-selected pilot-bus voltage to make a reliable decision about the voltage operational state. Different types of short-term voltage dynamics are considered in the proposed method. The fuzzy membership functions are determined using a systematic method that considers the current situation of the voltage trajectory. Finally, the voltage status is categorized into four classes to determine appropriate remedial actions. The proposed method is validated on a IEEE 73-bus power system in a mATLAB environment.

关键词： Fuzzy logic fault-induced delayed voltage recovery phasor m.a.urement unit(PmU) short-term voltage stability situational awareness voltage classification