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spectroscopic and Fluorescence studies on the Trivalent Ce,eu,Nd and La Metal Ions Rhodamine CFlorescent Dye Complexes

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光谱学与光谱分析 2021年第10期41卷 3311-3315页

作者： Moamen s.Refat mahmoud salman Akram M.el-Didamony Hammad Fetooh ema. s.e.abd el-ma.soud Mohamed Y.el-sayed Department of Chemistry College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Department of Chemistry Faculty of ScienceAl-Hussein Bin Talal UniversityP.O.Box 20 Ma’anJordan Department of Chemistry Faculty of ScienceZagazig UniversityEgypt Chemistry Department College of ScienceJouf UniversityP.O.Box:2014 SakakaSaudi Arabia

The four isolates solid complexes:[La(RHC)(NO_(3))_(2)]·3H_(2)O,[Nd(RHC)(NO_(3))_(2)]·4H_(2)O,[eu(RHC)(NO_(3))_(2)]·2H_(2)O,and[Ce(RHC)(NO_(3))_(2)]·5H_(2)O that obtained by the reaction of the nitrate salts of the Ce(Ⅲ),eu(Ⅲ),Nd(Ⅲ)and La(Ⅲ)ions and rhodamie C(RHC)ligand were interpretative using elemental analysis(C,H and N),molar conductivity,infrared,electronic,fluorescence and 1H-NMR spectra to achieve the speculated suitable *** low molar conductance values of the synthesized RHC complexes concluded the non-electrolytic *** infrared spectra recorded the absence of stretching vibrationν(OH)of the—COOH and presence of two new vibration bands at 1597~1601 and 1383~1399 cm^(-1)which were assigned toνas(COO-)andνs(COO-).The difference between them revealed that the carboxylate group acts as a bidentate ligand.1HNMR spectra of europium and lanthanum(Ⅲ)complexes were supported the FTIR results based on the absent of proton of the carboxylic ***,the microanalytical and spectroscopic results deduced that RHC acts as a monobasic bidentate ligand,and coordinated to the central metal(Ⅲ)ions via the two oxygen atoms of deprotonated carboxylic *** studies were performed on the metal complexes of Ce^(3+),Tb^(3+),Th^(4+),Gd^(3+)and La^(3+),that referred a quenching in the fluorescene intensity of rhodamine C in the aqueous state after *** antimicrobial assessment against some kind of bacteria and fungi were also checked and recorded enhancement in case of their complexes.

关键词： Rhodamine C Chelation spectroscopic Thermogravimetric Lanthanides

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Gradient microstructure and superior strength-ductility synergy of AZ61 magnesium alloy bars processed by radial forging with different deformation temperatures

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Journal of materials science & Technology 2024年第3期170卷 65-77页

作者： Jingfeng Zou Lifeng ma Yanchun Zhu Ling Qin Yuan Yuan school of Mechanical engineering Taiyuan University of Science and TechnologyTaiyuan 030024China Heavy machinery engineering Research Center of the Ministry education Taiyuan University of Science and TechnologyTaiyuan 030024China Department of engineering University of HullCottingham RdHull HU67RXUK National engineering Research Center for magnesium Alloys Chongqing UniversityChongqing 400044China

Gradient microstructure modification is a cost-efficient strategy for high strength without compromising ductility,which is urgently needed in the fundamental science of engineering *** this study,heterogeneous structures of AZ61 alloy bars with anisotropic gradients(with different grain size distributions from the surface to the center)were observed to exhibit strong strength-ductility synergies under different deformation tem *** results reveal that the grain refinement process under mediumlow temperature deformation conditions(≤350℃)consists of four transition stages along the radial direction,i.e.,twin activations and deformation band formations,dislocation cells and pile-ups,ultrafine sub-grains,and randomly orientated quasi-micron *** deformation temperatures have a great influence on twin activations and deformation band formations,and the high temperature can easily provoke the initiation of non-basal *** deformation bands were determined as a primary nucleation site due to their highly unstable dislocation hindrance *** in combination with the Radial forging(RF)deformation process,the differences of dynamic precipitates can be attributed to microstructural difference and solubility limit of Al at different tem *** summarizing the tensile test results,the sample forged at 350℃exhibited the best strength-ductility synergy,exhibiting the highest elongation(el)of 23.2%with a 251 MPa yield strength(Ys)and 394 MPa ultimate tensile strength(UTs)in center region,and combined with the highest strength value of 256 MPa Ys and 420 MPa UTs in the center region,while the el was slightly degraded to 19.8%.

关键词： Gradient microstructure Radial forging strength-ductility synergy magnesium alloy strengthening mechanism

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From Fostering to Delusional Disorder of Filiation

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Open Journal of Psychiatry 2024年第4期14卷 283-286页

作者： Momar Camara Wissem masmoudi el Hadji makhtar Ba sokhna seck maïmouna Dieye Aïda sylla Department of Psychiatry and Medical Psychology Cheikh Anta Diop University Dakar Senegal Thiaroye National Psychiatric Hospital Center Dakar Senegal Fann National University Hospital Center Dakar Senegal Albert Royer Childrens Hospital Dakar Senegal

Introduction: Fostering is a widespread practice in West Africa. It played an essential role in the circulation of children. The failure of its community regulation, not compensated by a legal framework, has made its practice precarious. Observation: A case study was conducted on Dior, who was hospitalised in a psychiatric ward for a delusional disorder of filiation. Dior was entrusted to her maternal grandmother and aunt at ages 2 and 9. During these fosterings, the place of the symbolic father was not substituted, causing a void that challenged her imagination. The outcome was an inscription in a genealogy where she had found herself with prestigious parents. Discussion: Fostering has strongly disrupted the family dynamics in Dior’s case. One of her options was to assume the paternal function, the use of which was perceived as a defiance or even a transgression. This same function would be a starting point of a psychosis whose filial character would only be an attempt at rectification where reality and imagination collide. Conclusion: Our study reveals the importance of stable parental figures at stake in fostering contexts, which constitute a risk factor for the development of a subsequent psychosis.

关键词： Delusional Disorder of Filiation Psychopathology Interactions Fostering Family

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Temperature trends and its elevation-dependent warming over the Qilian Mountains

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Journal of Mountain science 2024年第2期21卷 500-510页

作者： ZHAO Peng He Zhibin ma Dengke WANG Wen QIAN Lihui school of Computer science Huainan Normal UniversityHuainan 232038China Linze Inland River Basin Research station Key Laboratory of Inland River Basin ScienceNorthwest Institute of Eco-Environment and ResourceChinese Academy of SciencesLanzhou 730000China University of Chinese Academy of sciences Beijing 100049China

Understanding temperature variability especially elevation dependent warming(eDW)in high-elevation mountain regions is critical for assessing the impacts of climate change on water resources including glacier melt,degradation of soils,and active layer *** means that temperature is warming faster with the increase of *** this study,we used observed temperature data during 1979-2017 from 23 meteorological stations in the Qilian Mountains(QLM)to analyze temperature trend with mann-Kendall(MK)test and sen’s slope *** showed that the warming trends for the annual temperature followed the order of T_min>T_mean>T_max and with a shift both occurred in *** and summer temperature have a higher increasing trend than that in autumn and winter.T_mean shifts occurred in 1996 for spring and summer,in 1997 for autumn and winter.T_max shifts occurred in 1997 for spring and 1996 for summer.T_min shifts occurred in 1997 for spring,summer and winter as well as in 1999 for *** mean diurnal temperature range(DTR)shows a significant decreasing trend(-0.18°C/10a)from 1979 to *** mean DTR shows a significant decreasing trend(-0.26°C/10a)from 1979 to 2017 with a shift occurred in *** removing longitude and latitude factors,we can learn that the warming enhancement rate of average annual temperature is 0.0673°C/km/10a,indicating that the temperature warming trend is accelerating with the continuous increase of *** increase rate of elevation temperature is 0.0371°C/km/10a in spring,0.0457°C/km/10a in summer,0.0707°C/km/10a in autumn,and 0.0606°C/km/10a in winter,which indicates that there is a clear eDW in the *** main causes of warming in the Qilian Mountains are human activities,cloudiness,ice-snow feedback and el Nino phenomenon.

关键词： Climate change Qilian Mountains Warming rates DTR elevation-dependent warming

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Ore Controls and Metallogenesis of Au-Ag Deposits at Atalla Mine,Central eastern Desert of egypt

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Acta Geologica sinica(english edition) 2020年第5期94卷 1451-1470页

作者： Mohamed abd el MONseF Geology Department Faculty of ScienceTanta UniversityTanta 31527Egypt Institute of Geological sciences Faculty of ScienceMasaryk UniversityBrnoCzech Republic

Gold-silver deposits in the Atalla area occur as hydrothermal quartz veins in Ne–sW pre-existing fractures within the Atalla granitic *** orientation of such quartz veins has been attributed to extensional behavior related to the Atalla shear Zone(AsZ).The Atalla area is covered by a variety of lithologies that are(from oldest to youngest):metasedimentary rocks,metavolcanic rocks,ophiolite assemblage(serpentinites/talc-carbonates),Atalla granite and Dokhan volcanic ***,Atalla granite ranges in composition from granodiorite to *** geochemistry constrains the calc-alkaine affinity of the Atalla granite that was intruded within an orogenic(syncollision)tectonic *** ore minerals are represented by gold/silver(electrum),pyrite(Py1&Py2),arsenopyrite,pyrrhotite,sphalerite,chalcopyrite,galena,covellite and *** temperature of ore formation ranges from 240 to 285℃and the estimated fluid pressure is in the range of 20–100 *** on the geological setting,ore textures and fluid characteristics;the Atalla Au-Ag deposits are considered to be orogenic in nature,formed from a continental collision(~653-590 ma),synchronous with the emplacement of calc-alkaline magmatism during the evolutionary history of the Arabian Nubian shield(ANs).The initial ore-forming fluid was primarily derived from a metamorphic source related to ophiolitic-serpentinite rocks under deep regional conditions of greenschist-amphibolite facies,where the Atalla granitic eruption provided the required temperature conditions for the metamorphic process to take *** such conditions,the transportation of ore metals as bisulfide complexes is *** deposition of ore minerals was triggered by fluidwallrock interaction through fracture pathways in conjunction with a temperature-pressure drop that is likely to have been related to uplift into the crustal levels.

关键词： Gold-silver arsenopyrite geothermometry fluid inclusions orogenic deposits Atalla shear Zone(AsZ)

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Neoproterozoic Tectonic events of egypt

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Acta Geologica sinica(english edition) 2021年第4期95卷 1366-1405页

作者： Mohamed abd el-WAHeD Zakaria HAMIMI Geology Department Faculty of ScienceTanta UniversityTanta 31527Egypt Department of Geology Faulty of ScienceBen ha UniversityBenha 13518Egypt

The egyptian Nubian shield(eNs)represents the northwestern part of the Arabian-Nubian shield and the northern extension of the east African *** eNs is regarded as being formed due to northward-directed escape *** is characterized by mild accretion and suture zones dominated by major strike-slip zones with a commonly sinistral sense of movement;some shear zones display a dextral sense of *** is dominated by gneisses and migmatites in the south,arc volcaniclastic metasediments and highly dismembered ophiolites in the central parts,whereas its northern part is dominated by late-to post-tectonic *** southern sinai,the Neoproterozoic rocks are grouped into four complexes,namely Feiran–solaf,sa’al–Zaghra,Kid and *** eNs ophiolites were formed between 730–750 ma,mainly in a supra-subduction zone *** eNs has undergone a Neoproterozoic deformation history involving three successive phases:(1)early N–s shortening phase(D1),(2)syn-accretionary phase(D2)and(3)Post-accretionary phase(D3).The initial island-arc stage(780–730 ma)is a N–s shortening phase initiated by collision between the eastern Desert tectonic terrane to the north with both the Gebeit and Gabgaba terranes to the south(830–720 ma).During the arc-splitting and back-arc spreading stage(730–620),voluminous syn-tectonic granitoids intruded into the eNs(750–610 ma).The e–W-directed compressional/transpressional phase(620–450 ma)led to the overall uplift of the central part of the eNs and consequently the development and exhumation of the core complexes in oblique convergent *** e–W intense shortening deformation resulted also in the formation of NW-and Ne-striking sinistral and dextral strike-slip shear zones,*** latest periods of the e–W-directed compressional/transpressional regime were characterized by deposition of the molasse-type Hammamat sediments unconformably over the Dokhan Volcanics,or interbedded with *** combined thrusting,folding and sin

关键词： Neoproterozoic deformation N–s shortening syn-accretionary phase post-accretionary phase egyptian Nubian shield

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The Tibetan Plateau bridge:Influence of remote teleconnections from extratropical and tropical forcings on climate anomalies

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Atmospheric and Oceanic science Letters 2024年第1期17卷 28-33页

作者： Yimin Liu Wei Yu Jilan Jiang Tingting ma Jiangyu mao Guoxiong Wu state Key Laboratory of Numerical Modeling for Atmospheric sciences and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina University of Chinese Academy of sciences BeijingChina school of Atmospheric sciences Sun Yat-sen UniversitySouthern Marine Science and Engineering Guangdong Laboratory(Zhuhai)ZhuhaiChina Guangdong Province Key Laboratory for Climate Change and Natural Disaster studies Sun Yat-sen UniversityZhuhaiChina

本文回顾了青藏高原桥梁作用方面的最新研究进展,涉及北大西洋气候异常对春,夏亚洲季风和厄尔尼诺-南方涛动(eNsO)事件的遥相关影响,热带海洋异常和中国东部极端气候异常之间的联系以及华南春雨的季节内变化等.介绍了年际时间尺度上,冬... 详细信息

本文回顾了青藏高原桥梁作用方面的最新研究进展,涉及北大西洋气候异常对春,夏亚洲季风和厄尔尼诺-南方涛动(eNsO)事件的遥相关影响,热带海洋异常和中国东部极端气候异常之间的联系以及华南春雨的季节内变化等.介绍了年际时间尺度上,冬-春季北大西洋海表温度强迫如何影响南亚季风的季节性转变以及随后eNsO事件的触发.5月份青藏高原上空显著的负感热斜压结构,为北大西洋影响亚洲季风和eNsO提供了桥梁效应,夏季北大西洋涛动与华东夏季降水变化显著相关,高原潜热在这一关系中起着桥梁作用.另一方面,这种高原桥梁效应也存在于从热带海洋异常到东亚夏季极端降水事件的连接中,以及从中纬度波列到华南春雨准双周振荡的联系中.

关键词：青藏高原桥梁作用遥相关北大西洋厄尔尼诺-南方涛动热带对流气候异常和极端事件

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An enhanced Deep Learning Method for skin Cancer Detection and Classification

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Computers, materials & Continua 2022年第10期73卷 1109-1123页

作者： Mohamed W.Abo el-soud Tarek Gaber Mohamed Tahoun abdullah Alourani Department of Computer science and Information College of Science in ZulfiMajmaah UniversityAl-Majmaah11952Saudi Arabia Faculty of Computers and Informatics Suez Canal UniversityIsmailia41522Egypt school of science Engineeringand EnvironmentUniversity of SalfordUK

The prevalence of melanoma skin cancer has increased in recent *** greatest risk from melanoma is its ability to broadly spread throughout the body by means of lymphatic vessels and ***,the early diagnosis of melanoma is a key factor in improving the prognosis of the *** learning makes it possible to design and develop intelligent systems that can be used in detecting and classifying skin lesions from visible-light *** systems can provide early and accurate diagnoses of melanoma and other types of skin *** paper proposes a new method which can be used for both skin lesion segmentation and classification *** solution makes use of Convolutional neural networks(CNN)with the architecture two-dimensional(Conv2D)using three phases:feature extraction,classification and *** proposed method is mainly designed for skin cancer detection and *** the public dataset International skin Imaging Collaboration(IsIC),the impact of the proposed segmentation method on the performance of the classification accuracy was *** obtained results showed that the proposed skin cancer detection and classification method had a good performance with an accuracy of 94%,sensitivity of 92%and specificity of 96%.Also comparing with the related work using the same dataset,i.e.,IsIC,showed a better performance of the proposed method.

关键词： Convolution neural networks activation function separable convolution 2D batch normalization max pooling classification

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Inter-annual variations of dissolved oxygen and hypoxia off the northern Changjiang River(Yangtze River) estuary in summer from 1997 to 2014

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Acta Oceanologica sinica 2024年第6期43卷 119-130页

作者： Anqi Liu Feng Zhou Xiao ma Qiang Zhao Guanghong Liao Yuntao Zhou Di Tian Xiaobo Ni Ruibin Ding College of Oceanography Hohai UniversityNanjing 210098China state Key Laboratory of satellite Ocean environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Observation and Research station of Changjiang River Delta marine ecosystems Ministry of Natural ResourcesZhoushan 316022China Ningbo marine Center Ministry of Natural ResourcesNingbo 315000China school of Oceanography Shanghai Jiao Tong UniversityShanghai 200240China Institute of Polar and Ocean Technology Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China

Hypoxia off the Changjiang River estuary has been the subject of much attention,yet systema.ic observations have been lacking,resulting in a lack of knowledge regarding its long-term change and *** revisiting the repeated surveys of dissolved oxygen(DO) and other relevant hydrographic parameters along the section from the Changjiang River estuary to the Jeju-do in the summer from 1997 to 2014,rather different trends were revealed for the dual low-DO *** nearshore low-DO core,located close to the river mouth and relatively stable,shows that hypoxia has become more severe with the lowest DO descen ding at a rate of -0.07 mg/(L·a) and the thickness of low-DO zone rising at a rate of 0.43 m/*** offshore core,centered around 40-m isobath but moving back and forth between 123.5°-125°e,shows large fluctuations in the minimum DO concentration,with the thickness of low-DO zone falling at a rate of -1.55 m/*** probable factors affecting the minimum DO concentration in the two regions also *** the nearshore region,the decreasing minimum DO is driven by the increase in both stratification and primary productivity,with the enhanced extension of the Changjiang River Diluted Water(CDW) strengthening *** the offshore region,the fluctuating trend of the minimum DO concentration indicates that both DO loss and DO supplement are *** DO loss is primarily attributed to bottom apparent oxygen utilization caused by the organic matter decay and is also relevant to the advection of low-DO water from the nearshore *** DO supplement is primarily due to weakened *** analysis also shows that the minimum DO concentration in the nearshore region was extremely low in 1998,2003,2007 and 2010,related to el Ni?o signal in these summers.

关键词： dissolved oxygen low-DO Changjiang River estuary interannual variations dual-core

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Corrosion inhibition of carbon steel in hydrochloric acid by cationic arylthiophenes as new eco-friendly inhibitors: experimental and quantum chemical study

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Chinese Journal of Chemical engineering 2021年第12期34卷 197-217页

作者： abd el-Aziz s.Fouda Mohamed A.Ismail abdulraqeb A.Al-Khamri Ashraf s.Abousalem Department of Chemistry Faculty of ScienceEl-Mansoura UniversityEl-Mansoura 35516Egypt Department of Chemistry Faculty of EducationArts and SciencesUniversity of Saba RegionMaribYemen Quality Control Laboratory Operations DepartmentJotunEgypt

This study describes the adsorption behavior of three arylthiophene derivatives namely:2-(4-amidino-3-fluorophenyl)-5-[4-methoxy phenyl] thiophene dihydrochloride salt(ma-1217),2-(4-amidinophenyl)-5-[4-chlorophenyll thiophene dihydrochloride salt(ma-1316) and 2-(4-amidino-3-fluorophenyl)-5-[4-ch lorophenyllthiophene dihydrochloride salt(ma-1312) at C-steel in 1.0 mol·L^(-1) HCl interface using experimental and theoretical *** and mass loss measurements showed that the inhibition efficiency(Ie) of the arylthiophene derivatives increases with increasing concentrations and exhibited maximum efficiency 89% at 21×10^(-6) mol·L^(-1)(ma-1217) by mass loss *** investigated arylthiophene derivatives obey the Langmuir adsorption *** polarization studies the arylthiophene derivatives act as mixed-type *** analysis were carried out and *** mode of orientation and adsorption of inhibitor molecules on C-steel surface was studied using molecular dynamics(MD) *** chemical parameters as well as the radial distribution function indices and binding energies confirm the experimental results.

关键词： Carbon steel Corrosion inhibition Adsorption Arylthiophene derivatives Polarization electrochemical frequency modulation

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