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Impedance spectroscopy and DFT/TD-DFT studies of diyttrium trioxide for optoelectronic fields

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Journal of Rare Earths 2023年第4期41卷 605-612页

作者： Ali A.Alkathiri A.A.Atta moamen S.Refat Sonam Shakya A.m.hassanien Saud A.Algarni Emad m.A.Ahmed Sultan E.Alomariy mohammed Alsawat Norah Algethami Department of Physics College of ScienceTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Department of Chemistry College of ScienceTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Department of Chemistry Aligarh Muslim UniversityAligarh202002India Department of Physics Faculty of Science and Humanity Studies at Al-QuwayiyahShaqra UniversityAl-Quwayiyah11971Saudi Arabia

Yttrium(Ⅲ)oxide or so-called diyttrium trioxide(Y_2O_3)is an excellent candidate ceramic material for optoelectronic ***,electrical conductivity,and dielectric relaxation properties of bulk yttrium(Ⅲ)oxide were studied.X-ray diffraction(XRD)results indicate that the yttrium(Ⅲ)oxide compound has a crystalline cubic *** transform infrared(FTIR)technique was used to ascertain the chemical structure of the yttrium(Ⅲ)oxide *** spectroscopy was used to analyze frequency-dependent electrical properties as a function of temperature in the range of 303-423 K and frequency range of 0.1 Hz-2 *** spectroscopy parameters such as dielectric constant,dielectric loss,loss factor,electric modulus,and complex impedance of the yttrium(Ⅲ)oxide compound were *** Nyquist plot describes the complex impedance of the yttrium(Ⅲ)oxide for different *** universal Jonscher's power law was used for the analysis of the complex electrical conductivity of the yttrium(Ⅲ)oxide *** is found that the real(σ')and imaginary(σ")parts of the complex conductivity increase with increasing *** exponent frequency(s)equals unity,which confirms that the predominant conduction mechanism is a nearly constant loss(NCL)***/TD-DFT studies using B3LYP/LanL2DZ level of theory were used to provide comparable theoretical data and electronic energy gap of HOmO→LUmO.

关键词： Yttrium(Ⅲ)oxidel Impedance spectroscopy DFT/TD-DFT Rare earths

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黑龙江西部半干旱区干旱特性评估

水文 2021年第4期41卷 95-101,108页

作者： mahmoud m.hassanien 黄金柏王斌顾准扬州大学水利科学与工程学院江苏扬州225009 埃及水资源与灌溉部埃及艾斯尤特71515 东北农业大学水利与土木工程学院黑龙江哈尔滨150030

研究干旱变化对区域生态环境保护和可持续发展具有重要意义。为评价黑龙江西部半干旱区的干旱变化特性,基于1961~2015年6个站点的气象数据,推求不同时间尺度(1、3、6、12、24个月)的标准化降水指数(SPI)和标准化降水-蒸散指数(SPEI);构... 详细信息

研究干旱变化对区域生态环境保护和可持续发展具有重要意义。为评价黑龙江西部半干旱区的干旱变化特性,基于1961~2015年6个站点的气象数据,推求不同时间尺度(1、3、6、12、24个月)的标准化降水指数(SPI)和标准化降水-蒸散指数(SPEI);构建线性回归模型评价主要气象因子对降雨的影响以及SPI和SPEI之间的线性拟合程度。结果表明:不同时间尺度的SPI和SPEI的变化过程相似,呈现轻微的湿润趋势;极端气象事件的评价结果与研究区历史上极端气象事件发生的年份一致;SPI与SPEI对时间步长为12个月的干旱评估准确性更高;在气温、日射量、湿度、风速四个因子中,气温对降雨的影响程度最大;步长为12个月的SPI与SPEI的拟合程度达80%以上。

关键词：黑龙江西部干旱标准化降水指数(SPI) 标准化降水-蒸散指数(SPEI)

A New Thioamide Derivative for Separation and Preconcentration of multi Elements in Aquatic Environment by Cloud Point Extraction

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American Journal of Analytical Chemistry 2011年第6期2卷 697-709页

作者： mohamed m. hassanien Ali m. Hassan Wael I. mortada Ahmed A. El-Asmy 不详

2-(pyridine-2-yl)-N-p-chlorohydrazinecarbothioamide (HCPTS) was synthesized, characterized and successfully applied for the preconcentration of Cu(II), Ni(II), Zn(II), Cd(II), Co(II), Pb(II), Fe(II), and Hg(II) in water, blood, and urine samples prior to graphite furnace atomic absorption determination (GFAAS);Hg was determined by cold vapor technique. Under the optimum experimental conditions (i.e. pH = 8, 10–4 m of HCPTS, 0.05% w/v of Triton X-114), calibration graphs were linear in the range of 0.02 to 200 ng?mL–1 for Co(II), Cd(II), Pb(II) and Ni(II);0.03 to 200 ng?mL–1 for Cu(II);0.07 to 200 ng?mL–1 for Fe(II) and Zn(II) and 0.02 to 150 ng?mL–1 for Hg(II). The enrichment factors were 43, 51, 41, 46, 54, 40, 45 and 52 for Cu(II), Ni(II),Zn (II), Cd(II), Co(II), Pb(II), Fe(II), and Hg(II), respectively. The limit of detection were found to be 0.019, 0.094, 0.0514, 0.052, 0.0165, 0.047, 0.068 and 0.041 ng?mL–1 for Cu(II), Ni(II), Zn(II), Cd(II), Co(II), Pb(II), Fe(II), and Hg(II), respectively. The developed method was applied to the determination of these metal ions in water, blood and urine samples with satisfactory results.

关键词： Heavy metals Preconcentration Cloud Point Extraction 2-(Pyridine-2-Yl)-N-P-Chlorohydrazinecarbothioamide

Locomotion-based Hybrid Salp Swarm Algorithm for Parameter Estimation of Fuzzy Representation-based Photovoltaic modules

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Journal of modern Power Systems and Clean Energy 2021年第2期9卷 384-394页

作者： Rizk m.Rizk-Allah Aboul Ella hassanien the Faculty of Engineering Menoufia UniversityShebin El-KomEgypt Scientific Research Group in Egypt CarioEgypt the Faculty of Computers and Artificial Intelligence Cairo UniversityCairoEgypt

Identifying the parameters of photovoltaic(PV)modules is significant for their design and *** of the instabilities in the weather action and land surface of the earth,which cause errors in measuring,a novel fuzzy representation-based PV module is formulated and *** this paper,a novel locomotion-based hybrid salp swarm algorithm(LHSSA)is presented to identify the parameters of PV modules accurately and *** the LHSSA,better leader salps based on particle swarm optimization(PSO)are incorporated to the traditional salp swarm algorithm(SSA)in a serialized scheme with the aim of providing more valuable information for the leader salps of the *** this integration,the proposed LHSSA can escape the local optima as well as guide the seeking process to attain the promising *** proposed LHSSA is investigated on different PV models,i.e.,single-diode(SD),double-diode(DD),and PV module in crisp and fuzzy *** comparing with different algorithms,the comprehensive results affirm that the LHSSA can achieve a highly competitive performance,especially on quality and reliability.

关键词： Salp swarm algorithm(SSA) particle swarm optimization(PSO) photovoltaic(PV)model hybridization

Influences of greenhouse-integrated semi-transparent photovoltaics on microclimate and lettuce growth

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International Journal of Agricultural and Biological Engineering 2017年第6期10卷 11-22页

作者： Reda hassanien Emam hassanien Li ming Solar Energy Research Institute Yunnan Normal UniversityKunming 650500China Agricultural Engineering Department Faculty of AgricultureCairo UniversityGiza 12613Egypt

Shading in greenhouses is a simple and cheap method usually used to reduce the intensity of solar radiation and air ***,combining Photovoltaic(PV)panels and crops on the same cropland could alleviate the increasing competition for the agricultural land between food and energy *** addition,the integration of PV with greenhouses could reduce,or partially replace the energy consumption for greenhouse crop ***,the aim of this study was to investigate the shading effect of semi-transparent mono-crystalline silicon double glazing photovoltaic panels(STPV),mounted on top of an agricultural greenhouse,which occupied 20%of the roof area,on the microclimate conditions and the growth of lettuce plants inside a *** showed that the combination of STPV and polyethylene cover decreased the solar radiation by 35%to 40%compared to the use of polyethylene cover only for clear days which was in the acceptable range of photosynthetically active radiation for lettuce ***,STPV shading decreases the air temperature by 1℃-3℃ and had no effect in the relative humidity under natural ***,there were no significant differences(pmodules can decrease the solar irradiation and the internal air temperatures as well as generate electric energy for environmental control systems without significant influence on the growth of lettuce ***,it can decrease the water consumption by decreasing the evapotranspiration rate.

关键词： semi-transparent photovoltaics greenhouse shading lettuce growth microclimate energy consumption

Neurogenesis dynamics in the olfactory bulb:deciphering circuitry organization, function, and adaptive plasticity

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Neural Regeneration Research 2025年第6期20卷 1565-1581页

作者： moawiah m.Naffaa Department of Psychology and Neuroscience Duke UniversityDurhamNCUSA Department of Cell Biology Duke University School of MedicineDurhamNCUSA

Adult neurogenesis persists after birth in the subventricular zone, with new neurons migrating to the granule cell layer and glomerular layers of the olfactory bulb, where they integrate into existing circuitry as inhibitory interneurons. The generation of these new neurons in the olfactory bulb supports both structural and functional plasticity, aiding in circuit remodeling triggered by memory and learning processes. However, the presence of these neurons, coupled with the cellular diversity within the olfactory bulb, presents an ongoing challenge in understanding its network organization and function. moreover,the continuous integration of new neurons in the olfactory bulb plays a pivotal role in regulating olfactory information processing. This adaptive process responds to changes in epithelial composition and contributes to the formation of olfactory memories by modulating cellular connectivity within the olfactory bulb and interacting intricately with higher-order brain regions. The role of adult neurogenesis in olfactory bulb functions remains a topic of debate. Nevertheless, the functionality of the olfactory bulb is intricately linked to the organization of granule cells around mitral and tufted cells. This organizational pattern significantly impacts output, network behavior, and synaptic plasticity, which are crucial for olfactory perception and memory. Additionally, this organization is further shaped by axon terminals originating from cortical and subcortical regions. Despite the crucial role of olfactory bulb in brain functions and behaviors related to olfaction, these complex and highly interconnected processes have not been comprehensively studied as a whole. Therefore, this manuscript aims to discuss our current understanding and explore how neural plasticity and olfactory neurogenesis contribute to enhancing the adaptability of the olfactory system. These mechanisms are thought to support olfactory learning and memory, potentially through increased

关键词： network adaptability neurogenesis neuronal communication olfactory bulb olfactory learning olfactory memory synaptic plasticity

Approach for Training Quantum Neural Network to Predict Severity of COVID-19 in Patients

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Computers, materials & Continua 2021年第2期66卷 1745-1755页

作者： Engy El-shafeiy Aboul Ella hassanien Karam m.Sallam A.A.Abohany Department of Computer Science Faculty of Computers and Artificial IntelligenceUniversity of Sadat CitySadat City32897Egypt Faculty of Computers and Artificial Intelligence Cairo University12613Egypt Faculty of Computers and Information Zagazig University44519Egypt Faculty of Computers and Information Kafrelsheikh University33516Egypt

Currently,COVID-19 is spreading all over the world and profoundly impacting people’s lives and economic *** this paper,a novel approach called the COVID-19 Quantum Neural Network(CQNN)for predicting the severity of COVID-19 in patients is *** consists of two phases:In the first,the most distinct subset of features in a dataset is identified using a Quick Reduct Feature Selection(QRFS)method to improve its classification performance;and,in the second,machine learning is used to train the quantum neural network to classify the *** is found that patients’serial blood counts(their numbers of lymphocytes from days 1 to 15 after admission to hospital)are associated with relapse rates and evaluations of COVID-19 ***,the severity of COVID-19 is classified in two categories,serious and *** experimental results indicate that the proposed CQNN’s prediction approach outperforms those of other classification algorithms and its high accuracy confirms its effectiveness.

关键词： Predict COVID-19 lymphocytic count quantum neural network dynamic change

mitochondria–cGAS–STING axis is a potential therapeutic target for senescence-dependent inflammaging-associated neurodegeneration

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Neural Regeneration Research 2025年第3期20卷 805-807页

作者： Josém.Izquierdo Centro de Biología molecular Severo Ochoa(CBm) Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid(CSIC-UAM)MadridSpain

The word “senescence” comes from the Latin senescens, meaning “to begin to age”, and is characterized by a long-lasting but reversible block in proliferation, resulting from stress-induced cell cycle arrest of pre... 详细信息

关键词： Latin potential lasting

Brain-penetrating neurotrophic factor mimetics: HER-096 as a disease-modifying therapy for Parkinson’s disease

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Neural Regeneration Research 2025年第4期20卷 1094-1095页

作者： Natalia Kulesskaya Kira m.Holmström Henri J.Huttunen Herantis Pharma Plc EspooFinland

Neurotrophic factors as a therapeutic approach in neurodegenerative diseases:A major unmet need in the field of central nervous system diseases is disease-modifying *** for decades there have been various symptomatic treatments available to alleviate the symptoms of the disease,disease-modification,*** that stop,significantly delay,or reverse the progression of the disease,has been turned out to a difficult goal to achieve.

关键词： diseases treatment therapeutic