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Liquid Crystalline Polymers Xiii Main Chain Thermotropic Copoly (Arylidene-Ether)s Containing 4-Teriary Butyl-Cyclohexanone Moiety Linked with Polymethylene Spacers

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Open Journal of Organic Polymer Materials 2013年第1期3卷 19-26页

作者： Nayef S. Al-Muaikel Kamal i. aly Chemistry Department College of Pharmacy Al-Jouf University Sakaka Saudi Arabian Polymer Research Laboratory Chemistry Department Faculty of Science Assiut University Assiut Egypt

A new homologous series of thermotropic liquid crystalline copoly(arylidene-ether)s based on 4-teriary butyl cyclohexanone moiety were synthesized by solution polycondensation of 4,4’-diformyl-α,ω-diphenoxyalkanes, ia-d or 4,4’- diformyl-2,2’-dimethoxy-α,ω-diphenoxyalkanes iia-d with the 4-teriary butyl-cyclohexanone iii and cyclopentanone. A model compound iV was synthesized from the monomer iii with benzaldehyde and characterized by elemental and spectral analyses. The inherent viscosities of the resulting polymers were in the range 0.22 - 0.92 di/g. All the copoly(arylidene-ether)s were insoluble in common organic solvents but dissolved completely in concentrated H2SO4 and formic acid. The mesomorphic properties of these polymers were studied as a function of the diphenoxyalkane space length. Their thermotropic liquid crystalline properties were examined by DSC and optical polarizing microscopy and demonstrated that the resulting polymers form nematic mesophases over wide temperature ranges. The thermogravimetric analyses of those polymers were evaluated by TGA and DSC measurements and correlated to their structural units. X-Ray analysis showed that copolymers having some degree of crystallinity in the region 2q = 5° -60°. in addition, the morphological properties of selected examples were tested by Scanning electron microscopy.

关键词： Liquid Crystal Thermotropic Synthesis Characterization Poly(Arylidene-Ether)s

A variety of novel closed-form soliton solutions to the family of Boussinesq-like equations with different types

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Journal of Ocean Engineering and Science 2022年第6期7卷 543-554页

作者： Dipankar Kumar Gour Chandra Paul aly R.Seadawy M.T.Darvishi Department of Mathematics Bangabandhu Sheikh Mujibur Rahman Science and Technology UniversityGopalganj 8100Bangladesh Department of Mathematics University of RajshahiRajshahi 6205Bangladesh Mathematics Department Faculty of ScienceTaibah UniversityAl-Madinah Al-MunawarahSaudi Arabia Mathematics Department Faculty of ScienceBeni–Suef UniversityBeni SuefEgypt Department of Mathematics Razi UniversityKermanshah 67149Iran

This paper deals with the closed-form solutions to the family of Boussinesq-like equations with the effect of spatio-temporal *** sine-Gordon expansion and the hyperbolic function approaches are efficiently applied to the family of Boussinesq-like equations to explore novel solitary,kink,anti-kink,combo,and singular-periodic wave *** attained solutions are expressed by the trigonometric and hyperbolic functions including tan,sec,cot,csc,tanh,sech,coth,csch,and of their *** addition,the mentioned two approaches are applied to the aforesaid models in the sense of Atangana conformable derivative or Beta derivative to attain new wave ***-dimensional and two-dimensional graphs of some of the obtained novel solutions satisfying the corresponding equations of interest are provided to understand the underlying mechanisms of the stated *** the bright wave solutions in terms of Atangana’s conformable derivative,the amplitudes of the bright wave gradually decrease,but the smoothness increases when the fractional parametersαandβ*** the other hand,the periodicities of periodic waves *** attained new wave solutions can motivate applied scientists for engineering their ideas to an optimal level and they can be used for the validation of numerical simulation results in the propagation of waves in shallow water and other nonlinear *** performed approaches are found to be simple and efficient enough to estimate the solutions attained in the study and can be used to solve various classes of nonlinear partial differential equations arising in mathematical physics and engineering.

关键词： Boussinesq-like equations The sine-Gordon expansion approach The hyperbolic function approach Wave solutions Atangana conformable derivative

Buffalo stirred yoghurt fortified with grape seed extract:New insights into its functional properties

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Food Bioscience 2022年第3期47卷 1330-1336页

作者： Suzan H.Tami Esmat aly Aliaa A.Darwish Esmat S.Mohamed Department of Clinical Nutrition College of Applied Medical SciencesKing Faisal UniversitySaudi Arabia Dairy Research Department Food Technology Research InstituteAgricultural Research Center12613GizaEgypt Biotechnology Department Higher Institute for Agriculture Co-Operation13766ShobraCairoEgypt

Grape seed extract(GSE)is considered one of the major byproducts,which are rich in phenolic content and possess several health-promoting activities including antibacterial,anticancer,and *** current research was devoted to improve the bioactive properties of stirred yoghurt through supplementation with GSE at three concentrations(0.1,0.25,and 0.5 g/100 g yoghurt).The obtained stirred yoghurts were analyzed for determining their composition,pH,syneresis,viscosity,and sensory ***,some functional properties including antioxidant,antibacterial,anticancer activities were *** increments(p≤0.05)were observed in total solids,ash contents,pH,water holding capacity,and viscosity values,especially when 0.5%GSE was ***,adding 0.5%GSE showed higher(p≤0.05)in vitro antioxidant,antibacterial,and anticancer ***,the improved bioactive properties resulting from adding GSE,even at the higher concentration,were not accompanied by any change in sensory *** particular,the color descriptor was mostly preferred by panelists when 0.5%GSE was *** assessors did not observe any off-flavors in any of the tested stirred yoghurt ***,the functional properties of stirred yoghurt could be improved by adding GSE preparation without affecting its organoleptic properties.

关键词： Stirred yoghurt Grape seed extract Bioactive properties Antibacterial and anticancer activities Antioxidant

influence of anthropic and eco-hydrological factors on the floristic diversity of the herbaceous vegetation around the temporary ponds in Ferlo,northern Senegal

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Journal of Plant Ecology 2022年第1期15卷 26-38页

作者： Ndiabou Faye aly Diallo Moustapha BassimbéSagna Jean Luc Peiry Papa Saliou Sarr Aliou Guisse Département de Biologie Végétale UniversitéCheikh Anta DiopDakarSenegal iRL3189 Environment SantéSociétésCentre National de la Recherche Scientifiques(CNRS)ParisFrance iRL3189 Environnement SantéSociétésUniversitéCheikh Anta DiopDakarSenegal Observatoire international Hommes Milieux-OHMi Tessekere UniversitéCheikh Anta DiopDakarSenegal Observatoire international Hommes Milieux-OHMi Tessekere Centre National de la Recherche Scientifique(CNRS)ParisFrance Departement d’Agroforesterie UniversitéAssane Seck de ZiguinchorZinguinchorSenegal Département de Géographie Universitéde Clermont FerrandClermont-FerrandFrance Japan international Research Center for Agricultural Sciences(JiRCAS) TsukubaIbarakiJapan

Temporary ponds play substantial roles in preserving biodiversity in the *** study investigated the influence of anthropic and eco-hydrological factors on the plant diversity around two grazed ponds and one ungrazed pond in Ferlo,northern *** phytoecological transects were established per *** each transect,homogenous herbaceous vegetation units were identified and characterized(herbaceous cover,exposure,soil texture,soil moisture and pH,average height and slope).The herbaceous flora comprised 55 species,41 genera and 22 families across the three *** of the Poaceae,particularly Eragrostis tremula and Enteropogon prieurii,mostly colonized the grazed ponds,while the ungrazed pond favored other families’species such as Achyranthes sp.,Commelina forsskaolii,Corchorus *** Shannon’s diversity index(H′)of Wendu Marodi(ungrazed pond)was slightly higher(4.9 bits)than that of Belel Lougal and Belel Sow(grazed ponds)with 4.8 and 4.5 bits,*** equitability indices were relatively high in the three ponds(0.85,0.83 and 0.78).Eco-ecological factors distinguished four species’groupings:a Tribulus terrestris grouping colonizing the constraining and over-grazed zones,a Digitaria horizontalis grouping,and Chloris barbata grouping found in the transition zones,and an Achyranthes aspera grouping in the wetlands,where woody plants were strongly present and the anthropic action *** study highlighted the importance of maintaining a landscape mosaic of ungrazed or semi-protected ponds and grazed ponds to preserve the herbaceous floristic diversity in the center of Ferlo(Senegal)and the Sahel in general.

关键词： ponds Ferlo grazing herbaceous vegetation transect

Hepatocellular injury and the mortality risk among patients with COViD-19: A retrospective cohort study

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World Journal of Hepatology 2021年第8期13卷 939-948页

作者： Ali Madian Ahmed Eliwa Hytham Abdalla Haitham A Azeem aly Division of Gastroenterology and Hepatology Department of Internal MedicineFaculty of MedicineAl-Azhar University-AssiutAssiut 71524Egypt Division of Gastroenterology and Hepatology Department of Internal MedicineFaculty of MedicineAl-Azhar University-CairoCairo 11754Egypt Department of Chest Diseases Faculty of MedicineAl-Azhar University-AssiutAssiut 71524Egypt Department of internal Medicine Faculty of MedicineAl-Azhar University-AssiutAssiut 71524Egypt

BACKGROUND Clearly,infection with severe acute respiratory syndrome coronavirus 2 is not limited to the lung but also affects other *** need predictive models to determine patients’prognoses and to improve health care resource allocation during the coronavirus disease 2019(COViD-19)*** treating COViD-19,we observed differential outcome prediction weights for markers of hepatocellular injury among hospitalized *** To investigate the association between hepatocellular injury and all-cause inhospital mortality among patients with *** This multicentre study employed a retrospective cohort *** adult patients admitted to Al-Azhar University Hospital,Assiut,Egypt and Abo Teeg General Hospital,Assiut,Egypt with confirmed COViD-19 from June 1,2020,to July 30,2020 were *** categorized our cohort into three groups of(1)patients with COViD-19 presenting normal aminotransferase levels;(2)patients with COViD-19 presenting one-fold higher aminotransferase levels;and(3)patients with COViD-19 presenting two-fold higher aminotransferase *** analysed the association between elevated aminotransferase levels and all-cause in-hospital *** survival analysis was performed using the Kaplan–Meier method and tested by log-rank *** in total,376 of 419 patients met the inclusion criteria,while 29(8%)patients in our cohort died during the hospital *** median age was 40 years(range:28-56 years),and 51%were males(n=194).At admission,54%of the study cohort had liver *** pattern of liver injury was hepatocellular injury with an aspartate aminotransferase(AST)*** AST levels were independently associated with all-cause in-hospital mortality in the logistic regression analysis.A one-fold increase in serum AST levels among patients with COViD-19 led to an eleven-fold increase in in-hospital mortality(Pission AST levels correlated with C-reactive protein(r=0.2;P<0.003)and serum fer

关键词： COViD-19 Liver injury Aspartate amino transferase All-cause in-hospital mortality Serum ferritin SARS-CoV-2

An Efficient Machine Learning Based Precoding Algorithm for Millimeter-Wave Massive MiMO

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Computers, Materials & Continua 2022年第6期71卷 5399-5411页

作者： Waleed Shahjehan Abid Ullah Syed Waqar Shah Ayman A.aly Bassem F.Felemban Wonjong Noh Department of Electrical Engineering University of Engineering and Technology PeshawarPakistan Department of Mechanical Engineering College of EngineeringTaif UniversityTaif21944Saudi Arabia School of Software Hallym UniversityChuncheon24252Korea

Millimeter wave communication works in the 30–300 GHz frequency range,and can obtain a very high bandwidth,which greatly improves the transmission rate of the communication system and becomes one of the key technologies of fifth-generation(5G).The smaller wavelength of the millimeter wave makes it possible to assemble a large number of antennas in a small *** resulting array gain can compensate for the path loss of the millimeter *** this feature,the millimeter wave massive multiple-input multiple-output(MiMO)system uses a large antenna array at the base *** enables the transmission of multiple data streams,making the system have a higher data transmission *** the millimeter wave massive MiMO system,the precoding technology uses the state information of the channel to adjust the transmission strategy at the transmitting end,and the receiving end performs equalization,so that users can better obtain the antenna multiplexing gain and improve the system *** paper proposes an efficient algorithm based on machine learning(ML)for effective system performance in mmwave massive MiMO *** main idea is to optimize the adaptive connection structure to maximize the received signal power of each user and correlate the RF chain and base station *** results show that,the proposed algorithm effectively improved the system performance in terms of spectral efficiency and complexity as compared with existing algorithms.

关键词： MiMO phased array precoding scheme machine learning optimization

Optical dromions for complex Ginzburg Landau model with nonlinear media

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Applied Mathematics(A Journal of Chinese Universities) 2023年第1期38卷 111-125页

作者： Syed T.R.Rizvi aly R.Seadawy Muhammad Younis S.O.Abbas Abdul Khaliq Department of Mathematics COMSATS University IslamabadLahore CampusPakistan Mathematics Department Faculty of ScienceTaibah UniversityAl-Madinah Al-Munawarah 41411Kingdom of Saudi Arabia Punjab University College of information Technology University of the PunjabLahore Pakistan Mathematics Department Riphah Institute of Computing and Applied SciencesRiphah International UniversityLahorePakistan

This manuscript studies the optical dromions with beta derivative(BD)applied to the Complex Ginzburg Landau equation(CGLE)with Kerr law,parabolic law,cubic quintic septic law and quadratic cubic *** obtain bright dromians by using the sine-cosine method(SCM).We will also obtain domain walls with the assistance of Bernoulli equation approach(BEA).Constraint conditions are also listed.

关键词： CGLE optical dromians non-Kerr laws

Synthesis, Characterization and Utilization of Starch Hydroxypropyl Sulphate for Cationic Dye Removal

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international Journal of Organic Chemistry 2014年第3期4卷 208-217页

作者： aly A. Hebeish Amal A. aly Textile Research Division National Research Center Cairo Egypt

The best conditions for synthesis of starch hydroxypropyl sulphate as per the dry method were firstly established. This was done through a thorough investigation into factors affecting the synthesis including concentrations of both the NaOH catalyst and the 2-hydroxy-3-chloropropyl sulphate along with duration and temperature of the reaction. The resultant newly synthesized 2-hydroxy-3-chloropropyl sulphate was then reacted with starch to obtain starch hydroxypropyl sulphate ultimately. After being characterized by making use of iR spectroscopy analysis and scanning electronic microscope, the starch hydroxypropyl sulphate samples were submitted to evaluation for cationic dye removal using Methylene Blue (MB). Cationic dye removal was studied under a variety of conditions. Factors involved encompass initial dye concentration, duration, sulphur %, pH and adsorbent dose. 100% dye removal could be achieved under certain conditions which were described in the text.

关键词： Starch Cationic Dye Starch Sulphate Dye Removal Methylene Blue

industrial Recycling Process of Batteries for EVs

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Computers, Materials & Continua 2023年第2期74卷 4571-4586页

作者： Abdallah Abdallah Muhamed Dauwed Ayman A.aly Bassem F.Felemban imran Khan DagФivind Madsen School of Engineering Technology Al Hussein Technical University(HTU)Amman11831Jordan Department of Medical instrumentation Techniques Engineering Dijlah University CollegeBaghdadIraq Department of Mechanical Engineering College of EngineeringTaif UniversityTaif21944Saudi Arabia Department of Electrical Engineering University of Engineering and TechnologyPeshawar814Pakistan University of South-Eastern Norway Bredalsveien 143511 H?nefossNorway

The growing number of decarbonization standards in the transportation sector has resulted in an increase in demand for electric *** energy sources have the ability to bring the fossil fuel age to an *** storage devices,particularly lithium-ion batteries,are critical for this transition’s *** is owing to a combination of favorable characteristics such as high energy density and minimal *** the environmental degradation caused by hazardous wastes and the scarcity of some resources,recycling used lithium-ion batteries has significant economic and practical *** efforts have been undertaken in recent years to recover cathode materials(such as high-value metals like cobalt,nickel,and lithium).Regrettably,the regeneration of lower-value-added anode materials(mostly graphite)has received little ***,given the widespread use of carbon-based materials and the higher concentration of lithium in the anode than in the environment,anode recycling has gotten a lot of *** a result,this article provides the most recent research progress in the recovery of graphite anode materials from spent lithium ion batteries,analyzing the strengths and weaknesses of various recovery routes such as direct physical recovery,heat treatment recovery,hydrometallurgy recovery,heat treatment-hydrometallurgy recovery,extraction,and electrochemical methods from the perspectives of energy,environment,and economy;additionally,the reuse of recycled anode mats is ***,the problems and future possibilities of anode recycling are *** enable the green recycling of wasted lithium ion batteries,a low energy-consuming and ecologically friendly solution should be investigated.

关键词： industrial recycling process lithium ion batteries electro-chemical process remanufacturing