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Regulating electrochemical performances of lithium battery by external physical field

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Rare Metals 2024年第6期43卷 2391-2417页

作者： Shi-Kang Wang Shuai Wu Yi-Cheng Song hassanien gomaa Cui-Hua An Qi-Bo Deng Ning Hu School of Mechanical Engineering School of Materials Science and EngineeringHebei University of TechnologyTianjin 300401China Shanghai Key Laboratory of Mechanics in Energy Engineering Shanghai 200444China Department of Chemistry Faculty of ScienceAl-Azhar UniversityAssiut 71524Egypt Tianjin Key Laboratory of Power Transmission and Safety Technology for New Energy Vehicles Tianjin 300401China State Key Laboratory of Reliability and Intelligence Electrical Equipment Key Laboratory of Advanced Intelligent Protective Equipment TechnologyMinistry of EducationHebei University of TechnologyTianjin 300130China

Lithium batteries have always played a key role in the field of new energy ***,non-controllable lithium dendrites and volume dilatation of metallic lithium in batteries with lithium metal as anodes have limited their ***,a large number of studies have shown that the electrochemical performances of lithium batteries can be enhanced through the regulation of external physical ***,it significantly hinders the growth of lithium dendrites and promoting the reaction *** review summarizes recent innovations in the investigation of various physical fields of lithium *** application of magnetic field in the synthesis of lithium battery electrode materials is *** influence factors and regulation mechanism of various physical fields on the electrochemical performance of lithium batteries are reviewed *** addition,the current research status and existing challenges,along with future directions for the evolution of lithium batteries,are minutely discussed and *** strategies for the further evolution of lithium batteries have also been provided.

关键词： Lithium battery External field assist Reaction kinetics Lithium dendrite

Depositional environment， petrophysical evaluation and electrical properties of Zeit Formation， Northwestern shore of gulf of Suez， Egypt

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Journal of Earth Science 2024年

作者： Mohamed M.gomaa Emad A.Abd El Aziz geophysical Sciences Department National Research Centre El-Behoos St. Dokki Cairo Egypt.

The Zeit sand reservoir is one of the most prolific formations at Northwestern side of the gulf of Suez. In this research we will try to coordinate between electrical， petrophysical properties， depositional environment and facies discrimination in order to evaluate the hydrocarbon potentiality of studied Zeit formation. The statistical parameters for potassium (K)， thorium (Th) and Th/U ratio contents have a general increase towards northwestern parts， whereas uranium (U) content has a general increase towards southeastern parts. The sandstone facies is distinguished from the other facies by its thorium content >4 ppm. U has high carbonate content (U ≥1 ppm). Rocks’ electrical properties vary greatly depending on a number of factors. Electrical measurements were taken at frequencies range of (5×10-4Hz–100 kHz) for fully saturated samples (clayey sandstone) with NaCl (20 gm/Littre). As salinity， clay content， and frequency increase， consequently does the electrical properties. The continental condition are present in northwestern part (back-sea) which is distinguished by high K percent， high Th， high Th/U ratio， and low U contents. Low K， Th， and Th/U ratio contents， with high U contents， characterize the marine depositional environment that existed around the east and southeastern parts (fore-sea coincide with the dipping of strata). Furthermore， the studied Zeit Formation has good petrophysical properties that coincide with marine conditions. The middle and eastern parts (around ISS-94 and CSS-288) is a good reservoir (porosity 36%–39%， shale content <15%， hydrocarbon saturation 71%–92%， and net pay thickness 17–63 feet).

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Strain engineering in electrocatalysis:Strategies,characterization,and insights

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Nano Research 2024年第5期17卷 3603-3621页

作者： Qibo Deng Peng Xu hassanien gomaa Mohamed A.Shenashen Sherif A.El-Safty Cuihua An Li-Hua Shao Ning Hu School of Mechanical Engineering Hebei University of TechnologyTianjin 300401China Department of Chemistry Faculty of ScienceAl-Azhar University71524AssiutEgypt Department of Petrochemical Egyptian Petroleum Research Institute(EPRI)Nasr City11727CairoEgypt Center for Functional Materials National Institute for Materials Science(NIMS)1-2-1 SengenTsukubaIbaraki-ken305-0047Japan State Key Laboratory of Reliability and Intelligence Electrical Equipment Key Laboratory of Advanced Intelligent Protective Equipment TechnologyMinistry of Educationand School of Mechanical EngineeringHebei University of TechnologyTianjin 300401China National Key Laboratory of Strength and Structural Integrity Institute of Solid MechanicsSchool of Aeronautic Science and EngineeringBeihang UniversityBeijing100191China Advanced Equipment Research Institute Co. Ltd.of HEBUTTianjin 300401China

Strain engineering,as a cutting-edge method for modulating the electronic structure of catalysts,plays a crucial role in regulating the interaction between the catalytic surface and the adsorbed *** electrocatalytic performance is influenced by the electronic structure,which can be achieved by introducing the external forces or stresses to adjust interatomic spacing between surface *** challenges in strain engineering research lie in accurately understanding the mechanical impact of strain on *** paper first introduces the basic strategy for generating the strain,summarizes the different strain generation forms and their advantages and *** progress in researching the characterization means for the lattice strains and their applications in the field of electrocatalysis is also ***,the challenges of strain engineering are introduced,and an outlook on the future research directions is provided.

关键词： strain electrocatalysis characterization chemical reaction kinetics lattice mismatch

Review of analytical methods for stress and deformation analysis of buried water pipes considering pipe-soil interaction

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Underground Space 2023年第6期13卷 205-227页

作者： Yingxu Huo Sherif Mohsen Mohamed hassan gomaa Tarek Zayed Mohamed Meguid Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHung HomHong Kong 999077China Department of Building and Real Estate The Hong Kong Polytechnic UniversityHung HomHong Kong 999077China Structural Engineering Department Faculty of EngineeringMansoura UniversityMansoura 35516Egypt Department of Civil Engineering McGill UniversityMontrealQuebec H3A 0G4Canada

Buried water pipelines are vulnerable to fail or break due to excessive loading or ground *** evaluation of pipe performance and serviceability relies on the proper understanding of pipe-soil interactions(PSI).Analytical methods are important approaches to studying ***,a systematic and thorough literature review to analyze the existing research trends,technological achievements and future research opportunities is not *** work investigates analytical methods that analyze the stress and deformation of pipes in terms of cross-sectional,transverse and longitudinal PSI ***,scientometric analysis is performed to acquire relevant research works from online databases and analyze the existing data of influential authors,productive research sources and frequent key word occurrence in the fields of ***,a qualitative discussion is performed in the three categories of PSI:(1)cross-sectional,including ovalization and circumferential behaviours;(2)transverse,including seismic fault crossing,weak soil zones,ground settlement and pipe uplift;and(3)***,six research opportunities are discussed,including the role of friction in cross-sectional deformation,combined effects of bending and compression,choice of soil reaction models and calibration of key parameters,effect of pipe flaws,soil spatial variability and behaviours of curved *** study helps beginners familiarize themselves with PSI analytical methods and provides experienced researchers with ideas for future research directions.

关键词： Pipeline Analytical methods Pipe-soil interactions Seismic fault Settlement Uplift Buckling Tunnelling

Pituitary macroadenoma apoplexy as a rare complication of Bruton tyrosine kinase inhibitor in chronic lymphoid leukaemia

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Chinese Neurosurgical Journal 2023年第4期9卷 320-325页

作者： Aysha gomaa Robert Skelly East Sussex Healthcare NHS Trust EastbourneUK East Suffolk and North Essex NHS Foundation Trust ColcchesterUK

Background Pituitary apoplexy is a neurosurgical emergency and is a known yet rare complication of pituitary *** typically present with visual field defects,headache and altered *** are multiple risk factors for this complication and a thorough drug history is essential to exclude iatrogenic causes of *** present an extremely rare case of newly diagnosed pituitary insufficiency unveiled by ibrutinib therapy(a Bruton tyrosine kinase inhibitor).Furthermore,after initial withdrawal of ibrutinib because of the erroneous diagnosis of Syndrome of Inappropriate Antidiuretic Hormone Secretion(SIADH),its re-administration led to the development of classical pituitary apoplexy 4 months after treatment was *** presentation A male patient in his 60s with a background of chronic lymphocytic leukaemia(CLL)on ibrutinib and venetoclax presents with acute confusion and deranged *** is found to be hyponatraemic and is diagnosed with Syndrome of Inappropriate Antidiuretic Hormone Secretion(SIADH)and treated with fluid *** represents again 3 weeks later with hyponatraemia and further investigations reveal pituitary insufficiency and *** was restarted on ibrutinib and venetoclax at the time of *** months later,he presents with sudden retro-orbital headache associated with *** findings include cranial nerve III,IV and XI ***’s visual field examination revealed a left visual field index(VFI)of only 1%while the right was 64%with temporal *** pupils were mid-dilated and poorly reactive to *** pituitary with contrast showed features of pituitary apoplexy and optic nerve *** was urgently referred to the neurosurgical team and underwent an emergency trans-sphenoidal hypophysectomy with circumferential excision of the ***-operative recovery was uneventful with marked improvement in vision *** patient was restarted on ibruti

关键词： Pituitary apoplexy Pituitary macroadenoma Chronic lymphocytic leukaemia Chemotherapy

Double-antibody-based nano-biosensing systemfor the onsite monitoring of SARS-CoV-2 variants

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Microsystems & Nanoengineering 2023年第4期9卷 247-262页

作者： Heba A.Hussein Ahmed Kandeil Mokhtar gomaa Rabeay Y.A.hassan Virology Department Animal Health Research Institute(AHRI)Agricultural Research Center(ARC)Giza 12619Egypt Biosensors Research Laboratory Zewail City of Science and Technology6th October CityGiza 12578Egypt Center of Scientific Excellence for Influenza Viruses Environmental Research DivisionNational Research CentreGiza 12622Egypt Nanoscience Program University of Science and Technology(UST)Zewail City of Science and TechnologyGiza 12578Egypt

The fast and reliable diagnosis of COVID-19 is the foremost priority for promoting public health ***, double-antibody-based immunobiosensor chips were designed, constructed, and exploited for clinicaldiagnosis. gold nanoparticles/tungsten oxide/carbon nanotubes (AuNPs/WO3/CNTs) were used as the active workingsensor surface to support the chemical immobilization of a mixture of SARS-CoV-2 antibodies (anti-RBD-S and anti-RBD-S-anti-Llama monoclonal antibodies). The morphology and chemical functionalization of the fabricateddisposable immunochips was characterized using scanning electron microscopy (SEM), Fourier transform infrared(FTIR) spectroscopy, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). After full assayoptimization, the immunobiosensor showed a high sensitivity to detect SARS-CoV-2-S protein with limits of detectionand quantification of 1.8 and 5.6 pg/mL, respectively. On the other hand, for the SARS-CoV-2 whole virus particleanalysis, the detection and quantification limits were determined to be 5.7 and 17 pg/mL, respectively. The biosensorshowed a highly selective response toward SARS-CoV-2, even in the presence of influenza, nontargeting humancoronaviruses, and Middle East respiratory syndrome coronavirus (MERS-CoV). The immunochips exhibited distinctresponses toward the variants of concern: B.1>C.36.3>Omicron> Delta> Alpha coronavirus variants. For biosensorvalidation, twenty-nine clinical specimens were analyzed, and the impedimetric responses were positively detected fortwo Delta samples, eighteen Omicron samples, and six B.1-type samples in addition to three negative ***, the immunobiosensor was fabricated in the form of ready-to-use chips capable of sensitive detection ofvirus variants, especially variants of concern (VOC) and interest, in a specimen within 15 min. The chips providedinstantaneous detection with the direct application of clinical samples and are considered a point-of-care

关键词： system limits optimization

Hydrogel-based catalysts for hydrogen generation by the hydrolysis of B–H compounds under external physical fields

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Journal of Energy Chemistry 2023年第11期86卷 518-535,I0011页

作者： Chunling Qin Wenliu Wu hassanien gomaa Shuai Wu Cuihua An Qibo Deng Ning Hu Key Laboratory of Hebei Province on Scale-span Intelligent Equipment Technology School of Mechanical Engineeringand School of Materials Science and EngineeringHebei University of TechnologyTianjin 300401China State Key Laboratory of Reliability and Intelligence Electrical Equipment Hebei University of TechnologyTianjin 300130China Advanced Equipment Research Institute Co. Ltd.Of HEBUTTianjin 300401China

Hydrogen is a popular clean high-energy-density ***,its utilization is limited by the challenges toward low-cost hydrogen production and safe hydrogen ***,these issues can be addressed using promising hydrogen storage materials such as B–H *** stored in B–H compounds can be released by hydrolysis at room temperature,which requires catalysts to increase the rate of the ***,several effective approaches have been developed for hydrogen generation by catalyzing the hydrolysis of B–H *** review summarizes the existing research on the use of nanoparticles loaded on hydrogels as catalysts for the hydrolysis of B–H ***,the factors affecting the hydrolysis rate,such as temperature,p H,reactant concentration,and type of nano particles,were ***,the preparation methods(in situ reduction,one-pot method,template adsorption,etc.)for the hydrogel catalysts and the types of loaded catalysts were ***,the hydrogel catalysts that can respond to magnetic fields,ultrasound fields,optical fields,and other physical fields are ***,the issues and future developments of hydrogel-based catalysts are *** review can inspire deeper investigations and provide guidance for the study of hydrogel catalysts in the field of hydrogen production via hydrolysis.

关键词： Hydrogel Nanoparticlec atalyst B-H compounds Hydrolysis reaction External physical field

DNA Binding and Antitumor Activity of a New Fluores cent ProbeEu(Ⅲ)-Complex Containing 4-Methyl-Coumarin Moiety

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光谱学与光谱分析 2018年第11期38卷 3611-3621页

作者： Belal H M Hussein Mostafa A gouda Omer Sakin Abdulla Faluji Mohamed gomaa hassan A Azab Walid Fathalla Sherin Arabi Sa wsan Mosa Chemistry Department Faculty of Science&ArtsAl UlaTaibah UniversityAl Madina Al MonawarahKSA Department of Chemistry Faculty of ScienceSuez Canal UniversityIsmailiaEgypt Chemistry Department Faculty of ScienceMansoura UniversityAl MansouEgypt Biotechnology Research Center Suez Canal Universitylsmailia 41522Egypt Medicinal Chemistry Department Faculty of PharmacySuez Canal Universitylsmailia 41522Egypt Department of Mathematical and Physical Sciences Faculty of EngineeringPort-Said UniversityPort-SaidEgypt Department of Mathematical and Physical Sciences Faculty of EngineeringSuez Canal UniversitylsmailiaEgypt Department of Chemistry Faculty of Educationel Arish UniversityEgypt

A new europium(Ⅲ)complex containing(4-Methyl-2-oxo-2 H-chromen-7-yloxy)-acetic acid moiety(CMMC)was synthesized,characterized,and confirmed as antitumor agent and fluorescent *** spectroscopic measurements of Eu(Ⅲ)in the presence of CMMC were obtained in different *** results show that the strongest Eu(Ⅲ)emission bands were monitored in iso-propyl alcohol while the weakest Eu(Ⅲ)emission band was observed in *** interaction of Eu(Ⅲ)-(CMMC)2 complex with DNA was monitored using absorption and emission *** fluorescence titration measurements,the binding constants of DNA with Eu(Ⅲ)-(CMMC)_2 complex were found to be 1.04×10~5 L·mol^(-1) in Tris-HCl and 1.17×10~7 L·mol^(-1) in DMSO-Tris-HCl buffer(9∶1 V/V).Hypochromism was observed from the absorption titration experiment which indicates the intercalation of Eu(Ⅲ)-complex between the base pair of *** result further confirmed by fluorescent Ethidium bromide displacement *** fluorescence calibration curve was used for the determination of DNA with LOD of 1.2 ng in DMSO-Tris-HCl buffer(9∶1 V/V)and 5 ng in Tris-HCl *** preliminary antitumor investigation shows promising cytotoxicity against MDA-MB-231,MCF-7(mammary cancer),and PC-3(prostate carcinoma)cell lines with IC50 values of 40.63,25.42 and 30.25μmol·L^(-1),respectively.

关键词： Europium (4-Methyl-2-oxo-2H-chromen-7-yloxy)-acetic acid DNA sensing Spectroscopic properties Antitumor activ ity

Mechanism of Cluster Formation on Cerium Borosilicate glasses Based on TEM-EDP and SEM-EDEX Investigations

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Journal of Minerals and Materials Characterization and Engineering 2022年第2期10卷 153-162页

作者： Salma Ahmeed gomaa El Damrawi Physics Department Sirte University Sirte Libya Physics Department Faculty of Science Mansoura University Mansoura Egypt

Cerium oxide has a great capacity to remove nonbridging oxygen atoms (NBO) from the glass network and serves as glass former units. The well formed CeO4 units played the role of decreasing NBO from the silicate network and cause a reduction in the concentration of tetrahedral boron groups (N4). The highest content of NBO in glass of lower CeO2 (1 mol%) has a dominant role in constructing crystalline clusters in the glass. Higher CeO2 concentration leads to formation of an amorphous glass network as documented by XRD and TEM-EDP spectra. Coordination of cerium with oxygen atoms gives uniform units of spherical morphology in the pure CeO2 as well as in cerium rich glass. Clustered species has a great benefit in the field of application, used as a shielding material for ionized radiations.

关键词： TEM-EDP SEM-EDEX Cluster Formation Cerium Borosilicate glasses