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Screening the Insecticidal Efficacy of Nano ZnO Synthesized via in-situ Polymerization of Crosslinked Polyacrylic Acid as a Template

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Journal of Materials Science & Technology 2012年第11期28卷 961-968页

作者： M. Mekewi ahmed shebl A.I. Imam M.S. Amin T. Albert Chemistry Department Faculty of Science Ain Shams University Plants Protection Department Desert Research Center

Nano zinc oxide （ZnO） is a very useful and important material in many industrial and biological applications. In the present work, ZnO was synthesized by post thermal degradation of the precursor ＂zinc acetate di-hydrate＂ templated in crosslinked polyacrylic acid （PAA）. The crosslinked PAA template was prepared through an in-situ polymerization process adopted in presence of ammonium per sulphate, as an initiator, and N, Nt- methylene bis-acrylamide as the crosslinker. Variation of preparation parameters and their impact on the oxide stoichiometry, crystal structure, crystallite size and surface texture of the oxide were investigated. Energy dispersive X-ray technique （EDX）, X-ray diffraction （XRD） and scanning electron microscopy （SEM） were convincingly used to reveal the oxide structural features and characteristics. The performed bioassay tests indicated the efficacy of this method of preparation to produce nano ZnO with novel insecticidal activity against the greater wax moth, Galleria rnellonella.

关键词： Nano ZnO in-situ polymerization Polymer template Insecticide Bioassay Galleria mellonella

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Mapping Structurally Controlled Alterations Sparked by Hydrothermal Activity in the Fatira–Abu Zawal Area,Eastern Desert,Egypt

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Acta Geologica Sinica(English Edition) 2023年第2期97卷 662-680页

作者： Mohamed BADAWI Mahmoud ABDELATIF Ali shebl Farid MAKROUM ahmed SHALABY Norbert NéMETH Institute of Exploration Geosciences University of MiskolcMiskolc 3515Hungary Department of Geology Mansoura UniversityMansoura 35516Egypt Department of Geology South Valley UniversityQena 83523Egypt Department of Mineralogy and Geology University of DebrecenDebrecen 4032Hungary Department of Geology Tanta UniversityTanta 31527Egypt

The Eastern Desert of Egypt suffered a protracted period of deformation triggered by cratonization of the new juvenile crust known as the Arabian Nubian Shield(ANS),which has been proposed for potential gold discoveries associated with the corresponding tectonic *** Fatira area,on the border of Egypt’s Northern and Central Eastern Deserts,is covered with metavolcanic rocks twisted by a dextral relocation of the Fatira Shear Zone(FSZ)relative to the Barud magmatic *** recent study evaluated many deformed post-orogenic granitic intrusions and felsite dikes associated with promising mineralization localities,notably orogenic gold *** combination of various field observations and remote sensing data,followed by the analysis of aeromagnetic enhanced maps,allowed the differentiation of distinct lithologies,structural features,and hydrothermal alterations in the study ***,the integrated results obtained from the different interpretation techniques are utilized to identify and confirm the previously supposed mineralized localities in the Fatira and Abu Zawal areas and predict other matched *** final ASTER,Sentinel 2 hydrothermal alteration,and orientation entropy heat maps demonstrate the association between these mineralized regions and major structures related to the FSZ late stage of deformation rather than other structures studied throughout the area of interest.

关键词： gold granite island arc association Pan-African Orogeny Egypt

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Expression levels ofβcatenin and galectin-3 in meningioma and their effect on brain invasion and recurrence:a tissue microarray study

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Cancer Biology & Medicine 2017年第3期14卷 319-326页

作者： Rehab Allah ahmed Abdelhadi M shebl Hany Onsy Habashy Department of Pathology Mansoura UniversityFaculty of MedicineMansoura DK 35516Egypt

Objective:Meningiomas are neoplasms that arise from the meninges of the central nervous system(CNS).They constitute about25.6%of CNS tumors diagnosed in *** morphological variants of meningiomas display aggressive behavior,leading to brain-invasive growth *** meningiomas are usually treated by complete surgical excision,the risk of postoperative recurrence ***,additional biomarkers for predicting aggressive behavior must be *** study aims to explore the clinical and biological relevance of the protein expression levels ofβ-catenin and galectine-3 in meningioma and to understand the pathobiology of this ***:This retrospective study was carried out on 153 cases of meningioma by using tissue microarrays and immunohistochemistry forβ-catenin and ***:Highβ-catenin expression was significantly associated with transitional and meningiotheliomatous meningiomas,low tumor grade,low recurrence rate,and low incidence of brain ***,high galectin-3 expression was associated with brain invasion,recurrence,high tumor grade,and tumor *** regression analysis indicated that among all variables included in the model,β-catenin and galactin-3 expression levels were significant predictors of tumor recurrence(P<0.001).Conclusions:Galectin-3 andβ-catenin are involved in meningioma recurrence but not in brain *** molecules could be important potential therapeutic targets and predictors for meningiomas.

关键词： Immunohistochemistry meningioma recurrence brain invasion galectin-3 and β-catenin

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