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Comprehensive chemical characterization of PM_(2.5) in the large East Mediterranean-Middle East city of Beirut,Lebanon

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Journal of Environmental Sciences 2023年第11期133卷 118-137页

作者： Nansi Fakhri Marc fadel Fatma Ozturk Melek Keles Minas Iakovides Michael Pikridas Charbel Abdallah Cyril Karam Jean Sciare Patrick L.Hayes Charbel Afif EMMA Research Group Centre d’Analyses et de RechercheFaculty of SciencesUniversitéSaint-JosephBeirutLebanon Department of Chemistry Faculty of SciencesUniversitéde MontréalMontréalQuébecCanada Environmental Engineering Department Faculty of EngineeringBolu Abant Izzet Baysal UniversityBoluTurkey Climate and Atmosphere Research Center(CARE-C) The Cyprus InstituteNicosiaCyprus

The chemical composition of PM_(2.5) at two sites in Lebanon,a country in the East Mediterranean-Middle East region,is investigated in the spring and summer *** average PM_(2.5) concentrations were of(29±16)μg/m 3 for Beirut urban site and(32±14)μg/m 3 for Beirut suburban *** study showed that the geographic location of the East Mediterranean region,such as its proximity to the Mediterranean Sea and the dust storm intrusion are a significant contributor to the high PM levels from natural sources,which cannot be mitigated,rendering the PM_(2.5) WHO annual Air Quality guideline unattainable due to high natural background,which also applies to the entire Middle East *** and Eastern Europe are the dominant origin of air masses throughout our sampling days,suggesting the long-range transport as an important potential contributor to the high observed concentrations of V,Ni,and sulfate in this region most probably in other East Mediterranean countries than Lebanon *** local sources determined through the chemical speciation including organics are road transport,resuspension of dust and diesel private generators.A health risk assessment of airborne metals was performed and the carcinogenic risk for all the metals exceeded by 42(adults)and 14(children)times the acceptable risk level(10^(-6))at both *** was the predominant carcinogenic metal,emphasizing the need to replace energy production with cleaner energy on a regional level and highlighting the severe impact of air pollution on the health of inhabitants in this region’s main cities.

关键词： Chemical composition PM_(2.5) Eastern Mediterranean Middle East Organic aerosols Health risk assessment

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基于状态观测和反馈的伺服系统位置控制器

清华大学学报（自然科学版） 2008年第1期48卷 24-27页

作者：郑泽东李永东 fadel M 肖曦清华大学电机工程与应用电子技术系北京100084 法国图卢兹国家理工学院LAPLACE CNRS-UMR 5213实验室法国图卢兹31071

为了提高永磁同步电机伺服系统中的位置控制性能,提出一种基于状态观测器和状态反馈的位置控制器。状态观测器可以利用较低精度的位置传感器来准确观测负载转矩、转子位置和转速。基于状态空间算法的位置控制器通过合适的零极点配置,可... 详细信息

为了提高永磁同步电机伺服系统中的位置控制性能,提出一种基于状态观测器和状态反馈的位置控制器。状态观测器可以利用较低精度的位置传感器来准确观测负载转矩、转子位置和转速。基于状态空间算法的位置控制器通过合适的零极点配置,可以提高位置控制性能。利用观测的负载转矩可以把负载的变化作为系统扰动进行补偿。仿真和实验结果表明:该控制器与传统的比例积分微分控制器相比,位置控制快速准确并且没有超调,在负载变化时系统仍然能够保持很好的稳定性和控制精度。

关键词：永磁同步电机状态观测器负载转矩状态反馈位置控制

Cosmological Distances in Closed Model of the Universe

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International Journal of Astronomy and Astrophysics 2013年第2期3卷 199-203页

作者： fadel A. Bukhari Department of Astronomy Faculty of Science King Abdulaziz University Jeddah Saudi Arabia

Four Cosmological distances were determined in the light of the closed cosmic model which was presented in a previous study. Each of these distances was obtained in terms of the redshift of an extragalactic object. It is found that the luminosity distance of the extragalactic object in the closed cosmic model, the observed model and model are approximately the same up to z = 0.1535. However, the luminosity distance in the close cosmic model approximately agrees with its value in the observed model up to z = 0.6442. Estimations of the horizon distance of the universe, the total mass and the mass of matter within the horizon distance, the equivalent numbers of the Milky Way-like galaxies and the Coma-like clusters of galaxies to the mass of matter were computed in the closed cosmic model at the present time.

关键词： Extragalactic Distances Cosmology Cosmic Dynamics Cosmological Parameter

Mechanical Sensorless Control of SPMSM Based on HF Signal Injection and Kalman Filter

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Mechanical Sensorless Control of SPMSM Based on HF Signal In...

Management of Water Resources in a Hyper-Arid Area: Strategy and Issues (Case of Oued-Souf Valley-South Eastern of Algeria)

第11届国际电机与系统学术会议

作者： Maurice fadel Lab.LAPLACE CNRS-INPT-UPS-ENSEEIHTToulouse31071France

＜正＞To reduce control system’s cost and complexity of permanent magnet synchronous motors（PMSM）,mechanical sensorless control is becoming a research *** paper presents a novel high frequency（HF） signal injection method for the mechanical sensorless control of surface mounted permanent magnet synchronous motors（SPMSM） in low speed and even zero speed regions based on the little saturation effects of stator circuit. Adaptive Kalman filter is used to deal with the signal processing instead of traditional filters to simplify the control system and improve *** and experimental results have shown the performance of the proposed method.

关键词： high frequency signal injection PMSM Kalman filter mechanical sensorless control low speed

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Journal of Water Resource and Protection 2012年第11期4卷 922-928页

作者： Salim Khechana El-fadel Derradji Laboratory of Geology Badji Mokhtar University Annaba Algeria

Rising Groundwater in Oued-Souf valley is result to errors committed by human in their interventions on the ecosystems and the mismanagement of this resource, witch principally marked in overexploitation of depth groundwater and the used sewerage system, leading the region to a truly dramatic and almost desperate, palms were turned into sort of marshes, where reeds take the place of dead palm trees. This situation lead us to search a model of water resources management, according to sustainability criteria taking into account the socio-economic (social, agricultural, industrial, tourism ) and ecosystem aspects (environmental and territorial). This by adapting and implementing the Integrated Management of Water Resources (IMWR) in this unit of water resources, so as to guide and mobilize progressively human, informational, financial and material resources, as well as the various sectors private and public to research concrete and measurable results, for water and ecosystems those are associated and that people wanted to see protected and restored.

关键词： Rising Groundwater Oued-Souf Valley Integrated Management of Water Resources Confrontation Resources-Needs

Maturation of “Neocortex Isol” in vivo

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Maturation of “Neocortex Isol” in vivo

革吉最高海相层约束班怒残留海消亡时间(～94 Ma)

中国神经科学学会第九届全国学术会议暨第五次会员代表大会

作者： fadel Tissir Andr *** Institute of Neuroscience Universite catholique de Louvain

＜正＞How much neocortical development depends on connections remains ***,we show that Celsr3|D1x mutant mice have no extrinsic neocortical connections yet survive to postnatal day 20,acquire a basic behavioral repertoire,and display spontaneous hyperactivity,with abnormal light/dark activity *** for hallmarks related to thalamic input,such as barrels in somatosensory cortex,cortical arealization and laminar maturation proceeded ***,the tangential extension of the mature cortex was diminished,with radial thickness less severely *** layer neurons were reduced in number,and their apical and basal dendritic arbors were blunted,with reduced synapse *** reached the cortex,and their density was comparable with wild *** excitability of mutant pyramidal neurons,measured in vitro in patch-clamp experiments in acute slices,was ***,their firing activity in vivo was quite similar to the wild type,except for the presence of rapid firing exhaustion in some mutant *** field potential and electrocorticogram showed similar range of oscillations,albeit with higher frequency peaks and reduced left-right synchrony in the ***,"protomap" formation,namely cortical lamination and arealization,proceed normally in absence of extrinsic connections,but survival of projection neurons and acquisition of mature morphological and some electrophysiological features depend on the establishment of normal cortical-subcortical relationships.

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科学通报 2019年第15期64卷 1620-1636页

作者：叶加鹏胡修棉孙高远 K. M. boudagher-fadel 南京大学地球科学与工程学院内生金属矿床成矿机制研究国家重点实验室南京210023 河海大学海洋学院南京210098 Department of Geological Sciences University College London London WC1E 6BT UK

长期以来,班怒(班公湖-怒江的简称)残留海何时消亡及消亡的方式等关键科学问题仍存在较大争议.本文对革吉地区发育的一套晚白垩世沉积进行了系统的地层学、沉积学和岩相学研究,发现其明显不同于北拉萨地体上广泛分布的竟柱山组陆相沉积... 详细信息

长期以来,班怒(班公湖-怒江的简称)残留海何时消亡及消亡的方式等关键科学问题仍存在较大争议.本文对革吉地区发育的一套晚白垩世沉积进行了系统的地层学、沉积学和岩相学研究,发现其明显不同于北拉萨地体上广泛分布的竟柱山组陆相沉积,而以发育海相灰岩和混积岩为特征,野外露头呈现被竟柱山组不整合覆盖的接触关系.本文将这套地层命名唐杂组,代表着拉萨地体和班怒带迄今发现的最高海相层.沉积环境分析表明,唐杂组记录了早期由扇三角洲平原相到前扇三角洲相的水深加深过程,随后海水逐渐消退并变为扇三角洲相砂砾岩沉积.有孔虫化石约束这套地层的时代为Cenomanian期(101~94 Ma);砂岩碎屑组分、碎屑锆石U-Pb年代学和Hf同位素等数据指示唐杂组沉积物源发生了一次明显的变化:早期由北拉萨地体和班怒带向南供给,后期转变为来自沉积区南侧的中拉萨地体和下白垩统郎山组灰岩.结合区域古地理分析,本文认为革吉地区唐杂组约束了班怒海在西段消失的时间为~94 Ma,同时确认班怒海并非由东向西退出,而是大致同时退出中北拉萨地体.

关键词：唐杂组晚白垩世拉萨地体物源分析班怒洋特提斯

Analysis, Design, and Test of CDMA LFSR with Offset Mask Using Standard ICs

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Engineering（科研） 2016年第4期8卷 226-231页

作者： Mouhamed fadel Diagana Serigne Bira Gueye Engineering Institute of Computer Science and Telecommunications (I3T) Dakar Senegal Department of Physics Faculty of Sciences and Techniques Cheikh Anta Diop University Dakar Senegal

Hardware implementation of Linear Feedback Shift Register (LFSR) plays a great and very important role in communication systems, and in many security devices. In this paper, a design of LFSR with offset mask has been presented, for Direct Sequence Code Division Multiple Access (DS-CDMA) applications. Integrated electronic components have been used. An accessible model facilitating the synthesis on Printed Circuit Boards (PCB) and implementation on Field Programmable Gate Array (FPGA) is offered. In addition, a temporal and spectral analysis of the circuit is performed in order to validate the design. This latter facilitates the generation of pseudo-random codes based on LFSR and their integration into electronic systems.

关键词： LFSR CDMA DS-CDMA PCB FPGA Integrated Circuit (IC) Spread Spectrum (SS) Modular Shift Register (MSRG)

Methyl gallate isolated from Mangifera pajang kernel induces proliferation inhibition and apoptosis in MCF-7 breast cancer cells via oxidative stress

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Asian Pacific Journal of Tropical Biomedicine 2022年第4期12卷 175-184页

作者： Ranneh Yazan Abu Bakar Mohd Fadzelly Rahim Azlen-Che Kassim Nur Kartinee Stanslas Johnson Teh Yuan-Han fadel Abdulmannan Ellulu Mohammed S Department of Technology and Natural Resources Faculty of Applied Science and TechnologyUniversiti Tun Hussein Onn MalaysiaPagoh CampusKM1 Panchor RoadMuar JohorMalaysia Department of Chemistry Faculty of ScienceUniversiti Putra MalaysiaSerdang 43300Malaysia Department of Medicine Faculty of Medicine and Health SciencesUniversiti Putra MalaysiaSelangorMalaysia Sport and Exercises Sciences School Faculty of ScienceLiverpool John Moores UniversityLiverpoolUK Department of Clinical Nutrition Faculty of Applied Medical SciencesAl-Azhar University of GazaGaza CityState of Palestine

Objective:To determine the lead bioactive compound in kernel extract of Mangifera pajang and its anti-cancer activity against human breast cancer cell lines with positive estrogen receptor(MCF-7).Methods:The methanolic extract of dried powder kernel of Mangifera pajang was exposed to column chromatography for *** structural elucidation of the isolated compound was characterized using infrared,nuclear magnetic resonance,mass ***,cytotoxicity,morphological changes,flow cytometry and cell cycle arrest analyses were performed to examine the mechanism of anti-proliferation and apoptosis induced by methyl gallate against ***:One compound was isolated from the methanolic extract of Mangifera pajang kernel and identified as methyl *** flow cytometric results demonstrated induction of apoptosis in MCF-7 cells by three concentrations of methyl *** cell cycle arrest showed a significant(P<0.05)decrease in cell progression at G2/M phase of MCF-7 after treatment with 100μM of methyl *** cell percentage of early and late apoptosis was significant at 10 and 100μM of methyl ***,methyl gallate treatment induced up-regulation of reactive oxygen species levels in MCF-7 cells with a reduction in superoxide dismutase ***:These findings indicate that isolated methyl gallate from Mangifera pajang kernel extracts induces growth inhibition and apoptosis in MCF-7 cells via up-regulating oxidative stress pathway.

关键词： Mangifera pajang Methyl gallate Breast cancer Cell cycle Apoptosis Oxidative stress