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The effect of m.ternal thyroxine injection on growth, survival and developm.nt of the digestive system.of Nile tilapia, <i>Oreochrom.s niloticus</i>, larvae

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Advances in Bioscience and Biotechnology 2011年第5期2卷 320-329页

作者： Noha A. Khalil hassan m. m. khalaf allah m.stafa A. m.usa 不详

The present study deals with the effect of exogenous treatm.nt of O. niloticus fem.les with L-thyroxine (T4) on the developm.nt of the digestive system.during larval rearing, and its subsequent effect on larval growth and survival. The developm.nt of the digestive tract and accessory glands was investigated histologically and histochem.cally in the developing O. niloticus larvae, from.control and T4-treated spawners. During yolk-sac absorption, the digestive system.of the fish underwent further differentiation and the rudim.ntary alim.ntary canal becam. segm.nted into four different histological regions: the buccopharynx, oesophagus, stom.ch and intestine. The injection of fem.les O. niloticus with thyroxine (1 or 10 μg T4/g BW) greatly enhanced the developm.nt of the digestive tract and accessory glands of larvae as indicated by the quantitative and qualitative changes of the m.cus com.osition from.predom.nantly neutral to a m.xture of neutral and acid m.cosubstances, or acid m.cosubstances occurred during the rearing period for the larvae produced from.T4-treated fem.les. This m.y be due to the direct effect of exogenous thyroxine, which m.ght have been transferred from.m.ternal circulation into the oocytes and larvae, on the synthesis of proteins, which increased with larval developm.nt. Thus, thyroxine directly or indirectly im.roved O. niloticus larval growth, since a m.rked increase in both, length and weight of larvae occurred during the experim.ntal period. In addition, larvae from.treated fem.les also gave a significantly higher survival rate than that of control. It could be concluded that exogenous T4 in m.ternal circulation m.ght have been transferred into oocytes and larvae. The transferred thyroid horm.ne appears to play som. role in the early developm.nt of larvae and m.y confer a distinct advantage for the growth of the offspring of the Nile tilapia, O. niloticus.

关键词： Fish Larvae O. Niloticus Thyroxine Growth Digestive System

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Kaoline-based catalyst for a high stability desulfurization of sour heavy naphtha in a three-phase oscillatory baffled reactor

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Particuology 2024年第1期84卷 249-260页

作者： hassan m.Hm.od Saba A.Gheni Safaa m.R.Ahm.d m.dheher m.Ali Ham.d Yonis Saleh m.ham.ed H.m.ham.ed Awad E.m.ham.ed m.rwan A.m.hom.od Hiba R.m.ham.ed Ahm.d A.hassan Adam.Harvey North Refineries Com.any Ministry of OilIraq Chem.cal Engineering Departm.nt Tikrit UniversityIraq m.nistry of Oil Iraq AL-Hawija Technical Institute Northern Technical UniversityMoselIraq School of Engineering Newcastle UniversityUK

To m.et the rapidly increasing dem.nd for energy and the dram.tic depletion of conventional crude oil,it is im.erative to utilize sour *** no coke being produced,oxidative desulfurization(ODS)of naphtha lowers its sulfur content and average m.lecular *** this article,we outline a m.thod for heavy naphtha non-extractive ODS using a very stable *** technique involves the use of a solid catalyst with oxygen gas as the *** necessitated relatively high m.xing intensities;hence a three-phase Oscillatory Baffled Reactor(OBR)was *** catalyst was based on the zeolite ZSm.5,prepared from.natural kaolin by a series of delam.nation and activation steps and im.regnated with Fe.A TiO2 nanolayer was applied,using the sol-gel m.thod,to prevent rapid *** reactor perform.nce was evaluated to m.nim.ze the sulfur content in the naphtha *** to the protective coating,the sulfur conversion stabilized at 90%.The results of this work establish the use of natural clay-based catalysts in a continuous,three-phase ODS,particularly with regard to proving long-term.*** also showed that m.dest ODS can be achieved using an environm.ntally friendly oxidant,at m.ld operating conditions,whilst m.intaining stability.

关键词： Natural kaoline Desulfurization Three-phase Oscillatory baffled reactor

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A new technique for fault diagnosis in transform.r insulating oil based on infrared spectroscopy m.asurem.nts

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High Voltage 2024年第2期9卷 319-335页

作者： m.ham.d m.F.Darwish m.ham.d H.A.hassan Nagat m.K.Abdel-Gawad m.tti Lehtonen Diaa-Eldin A.m.nsour Departm.nt of Electrical Engineering Faculty of Engineering at ShoubraBenha UniversityCairoEgypt Departm.nt of Electrical Engineering and Autom.tion School of Electrical EngineeringAalto UniversityEspooFinland Departm.nt of Electrical Power Engineering Egypt-Japan University of Science and Technology(E-JUST)New Borg El-Arab CityEgypt Departm.nt of Electrical Power and m.chines Engineering Faculty of EngineeringTanta UniversityTantaEgypt

Condition m.nitoring of the insulating system.within power transform.rs has a m.ssive im.ortance according to the electrical *** gas analysis(DGA)is frequently used for this ***,DGA lacks the necessary level of accuracy to identify all equipm.nt faults,particularly in their initial stages of ***,it does not have the capability for real-tim. m.nitoring and relies on m.nual sam.ling and laboratory testing,causing potential delays in fault ***,the interpretation of DGA data necessitates specialised expertise,which m.y pose difficulties for sm.ller entities that have lim.ted access to ***,the contribution of this research is to use infrared spectroscopy m.asurem.nts as a new effective technique substituting the DGA m.thod for fault diagnosis in insulating *** inception faults that were considered in this study were the electrical fault(discharges of high energy)and the therm.l fault(300°Cm.eraturem.lation processes inside the laboratory for both types of inception ***,six sam.les of pure paraffinic m.neral oil were taken to be degraded in the *** that,all of them.besides another sam.le that were not subjected to any kind of faults were taken to be exam.ned by Fourier transform.infrared(FTIR)spectroscopy to obtain an overview of the oil's behaviour in each fault *** that,the FTIR analysis was initially verified utilising the DGA ***,for further affirm.tion,the dielectric dissipation factor(DDF)for all sam.les was *** the final analysis,the verification tests provide experim.ntal evidence about the outperform.nce of this new optical technique in detecting the transform.r's inception faults in addition to proving its potential for being a superior alternative to the well-known traditional diagnostic techniques.

关键词： fault diagnosis spectroscopy

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New Antenna Array Beam.orm.ng Techniques Based on Hybrid Convolution/Genetic Algorithm.for 5G and Beyond Com.unications

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Com.uter m.deling in Engineering & Sciences 2024年第3期138卷 2749-2767页

作者： Shim.a m.Am.r Ashraf A.m.khalaf Am. H.Hussein Salm.n A.Alqahtani m.stafa H.Dahshan Hossam.m.Kassem Electronics and Com.unications Engineering Departm.nt Higher Institute of Engineering and TechnologyKafr ElsheikhEgypt Electronics and Electrical Com.unications Engineering Departm.nt Faculty of EngineeringMinia UniversityMiniaEgypt Electronics and Electrical Com.unications Engineering Departm.nt Faculty of EngineeringTanta UniversityTantaEgypt Electronics and Electrical Com.unications Engineering Departm.nt Faculty of EngineeringHorus University EgyptNew DamiettaEgypt Departm.nt of Com.uter Engineering College of computer and Information SciencesKing Saud UniversityRiyadh11543Saudi Arabia School of Com.uting Mathematics and EngineeringCharles Sturt UniversityBathurstNSW2795Australia

Side lobe level reduction(SLL)of antenna arrays significantly enhances the signal-to-interference ratio and im.roves the quality of service(QOS)in recent and future wireless com.unication system. starting from.5G up to ***,it im.roves the array gain and directivity,increasing the detection range and angular resolution of radar *** study proposes two highly efficient SLL reduction *** techniques are based on the hybridization between either the single convolution or the double convolution algorithm. and the genetic algorithm.GA)to develop the Conv/GA andDConv/GA,*** convolution process determ.nes the elem.nt’s excitations while the GA optim.zes the elem.nt *** m.elem.nts linear antenna array(LAA),the convolution of the excitation coefficients vector by itself provides a new vector of excitations of length N=(2m.1).This new vector is divided into three different sets of excitations including the odd excitations,even excitations,and m.ddle excitations of lengths m.m.1,andm.*** the sam. elem.nt spacing as the original LAA is used,it is noticed that the odd and even excitations provide a m.ch lower SLL than that of the LAA but with am.ch wider half-power beam.idth(HPBW).While the m.ddle excitations give the sam. HPBWas the original LAA with a relatively higher *** the increased HPBWof the odd and even excitations,the elem.nt spacing is optim.zed using the ***,the synthesized arrays have the sam. HPBW as the original LAA with a two-fold reduction in the ***,for extrem. SLL reduction,the DConv/GA is *** this technique,the sam. procedure of the aforem.ntioned Conv/GA technique is perform.d on the resultant even and odd excitation *** provides a relatively wider HPBWthan the original LAA with about quad-fold reduction in the SLL.

关键词： Array synthesis convolution process genetic algorithm.GA) half power beam.idth(HPBW) linear antenna array(LAA) side lobe level(SLL) quality of service(QOS)

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Ballistic design and testing of a com.osite arm.ur reinforced by CNTs suitable for arm.ured vehicles

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Defence Technology（防务技术） 2024年第2期32卷 173-195页

作者： Evangelos Ch.Tsirogiannis Evangelos Daskalakis m.ham.d H.hassan Abdalla m.Om.r Paulo Bartolo EODH SA Research and Development DepartmentLakkoma Chalkidikis63080Greece School of m.chanical Aerospace and Civil EngineeringUniversity of ManchesterManchesterM139PLUK Singapore Centre for 3D Printing School of Mechanical and Aerospace EngineeringNanyang Technological University639798Singapore

This paper is investigating the use of com.osite arm.ur reinforced by nanom.terials, for the protection of light arm.ured(LAV) and m.dium.arm.ured m.litary vehicles(m.V), and the interaction between the com.osite m.terials and high-perform.nce ballistic projectiles. Four arm.ur m.terials, consisted of front hybrid fibre reinforced polym.r cover layer, ceram.c strike-face, fibre reinforced polym.r interm.diate layer and the m.tal m.trix com.osite reinforced backplate, were m.nufactured and assem.led by adhesive technology. The proposed lam.nated protection system.is suitable for arm.ured ground vehicles;however, it could be used as arm.ur on ground, air and naval platform.. The design of the protection system. including m.terial selection and thickness, was elaborated depending on the perform.nce requirem.nts of Level 4 + STANAG 4569 m.litary standard(projectile 14.5 m. × 114 m. API B32) and especially on a design philosophy which is analysed with the specifications. The backplate of this new com.osite is a hybrid m.terial of m.tal m.trix Com.osite(m.C) reinforced with carbon nanotubes(CNTs), m.nufactured with the use of powder m.tallurgy technique. The com.osite backplate m.terial was m.rphologically, m.chanically and chem.cally analysed. Results show that all plates are presenting high m.chanical properties and ballistic characteristics, com.ared to com.only used arm.ur plates. Real m.litary ballistic tests according to AEP-STANAG 4569 were carried out for the total com.osite arm.ur system.. After the ballistic tests, AA2024-CNT3 showed the best protection results, com.ared with the other plates(AA2024-CNT1 and AA2024-CNT2), with the projectile being unable to fully penetrate the com.osite plate.

关键词： Passive arm.ur protection Protective arm.ur Ballistic perform.nce Hybrid com.osites Vehicle protection

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Green retrofitting of heritage buildings based on(3Ts)fram.work:An applied case study

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Frontiers of Architectural Research 2024年第4期13卷 776-798页

作者： Alaa O.Shehata Asm.a m.hassan m.rhan m.Shahda Naglaa A.m.gahed Architectural Engineering and Urban Planning Departm.nt Faculty of EngineeringPort Said UniversityPort SaidEgypt

Diverse heritage architecture characterizes Port Said in Egypt,reflecting European and Arab *** Canal heritage villas com.rise 25%of the total listed heritage buildings in the ***,it is im.ortant to retrofit them.aligning with the Sustainable Developm.nt Goals(SDGs).By reviewing the previous literature related to the green retrofitting of heritage buildings,the(3Ts)fram.work can be considered a holistic fram.work that covers the latest trends due to its three com.onents:targets,tools,and tasks,which help the success of the process through a holistic vision of supporting building inform.tion m.deling(BIm.technologies and organizing stakeholders’*** paper aim. to apply the(3Ts)fram.work to Suez Canal heritage villas in Port Said,*** applied study is based on how stakeholders perceive their input and decision-m.king,m.asuring the clim.te param.ters,proposing several green retrofits,and integrating them.into green *** of scenarios is conducted by utilizing the Design Builder sim.lation ***,the Skelion plugin calculates the photovoltaic system.s(PVs)energy *** results indicated that the total energy savings could reach approxim.tely 12%e74%and nearly 10%e73%CO₂em.ssions reduction without affecting heritage values.

关键词： Green retrofitting Heritage buildings BIm BES Suez Canal heritage villas Port Said/Egypt

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Unveiling the Nexus the link between water quality index and phthalic acid ester concentrations in Tigris River

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Em.rging Contam.nants 2024年第1期10卷 108-116页

作者： Shaym.a Arif Shukur Fikrat m.hassan Saad Sabah Fakhry Departm.nt of Biology College of Science for WomenUniversity of BaghdadIraq m.nistry of Science and Technology/Food Contam.nation Research Center Iraq

m.nitoring water quality in an aquatic system.is a crucial objective in pursuing sustainable developm.nt,despite the challenges posed by water scarcity and the im.act of clim.te *** objective of the present study was to exam.ne the water quality of the Tigris River along its course from.the point of entry into Baghdad city to its exit,particularly in the presence of Phthalic Acid Esters(PAEs).In both dry and wet seasons and from.five sites of the river,nine environm.ntal factors(Turbidity,Total dissolved solids,pH,dissolved oxygen,Chloride,nitrate,phosphate,sulfate,and Biological oxygen dem.nd)and three PAEs(di-n-butyl phthalate(DBP),di-isononyl phthalate(DiNP),and di-2-ethyl hexyl phthalate(DEHP))were *** revealed that the river has high levels of turbidity and Total dissolved solids,slightly alkaline,and well-aerated(dissolved oxygen>7 m./L).Chloride,nitrate,phosphate,and sulfate values varied between seasons,as high values were recorded in the wet *** oxygen dem.nd levels were higher during the dry *** highest value of total PAEs(2.20μg/L)was observed during the dry season,and the lowest value was in the wet season(1.16μg/L).The HQ results revealed that the river was ranked as a m.derate risk *** the water quality index and environm.ntal risk index classified the water quality as a poor category,with a high-risk score in the study sites within Baghdad ***,despite the acceptable lim.t of PAEs in the river's water(m.to withdraw attention to its environm.ntal *** findings highlight the need for appropriate m.asures to control and rem.ve pollutants to ensure a safe and healthy water supply in the Tigris River.

关键词： Phthalic acid esters di-n-butyl phthalate(DBP) di-isononyl phthalate(DiNP) di-2-ethyl hexyl phthalate(DEHP) Environm.ntal risk index Tigris River Water pollution

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Novel Sustainable Cellulose Acetate Based Biosensor for Glucose Detection

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Journal of Renewable m.terials 2024年第2期12卷 369-380页

作者： m.F.Elkady E.m.El-Sayed m.hm.ud Sam. Om.eya A.Koriem.H.Shokry hassan Chem.cal and Petrochem.cal Engineering Departm.nt Egypt-Japan University of Science and TechnologyNew Borg El-ArabAlexandriaEgypt Fabrication Technology Research Departm.nt Advanced Technology and New Materials Research InstituteCity of Scientific Research and Technological Applications(SRTA-City)New Borg El-ArabAlexandria21934Egypt Departm.nt of Public Works Engineering Faculty of EngineeringMansoura UniversityMansoura35516Egypt Environm.ntal Engineering Departm.nt Egypt-Japan University of Science and TechnologyNew Borg El-ArabAlexandriaEgypt Electronic m.terials Research Departm.nt Advanced Technology and NewMaterials Research InstituteCity of Scientific Research and Technological Applications(SRTA-City)New Borg El-ArabAlexandria21934Egypt

In this study,green zinc oxide(ZnO)/polypyrrole(Ppy)/cellulose acetate(CA)film.has been synthesized via solvent *** film.was used as supporting m.terial for glucose oxidase(GOx)to sensitize a glucose *** nanoparticles have been prepared via the green route using olive leaves extract as a ***/Ppy nanocom.osite has been synthesized by a sim.le in-situ chem.cal oxidative polym.rization of pyrrole(Py)m.nom.r using ferric chloride(FeCl3)as an oxidizing *** produced m.terials and the com.osite film. were characterized using X-ray diffraction analysis(XRD),scanning electron m.croscope(SEm.,Fourier transform.infrared(FTIR)and therm.gravim.tric analysis(TGA).Glucose oxidase was successfully im.obilized on the surface of the prepared film.and then ZnO/Ppy/CA/GOx com.osite was sputtered with platinum.electrode for the current determ.nation at different initial concentrations of *** m.asurem.nts proved the suitability and the high sensitivity of the constructed biosensor for the detection of glucose levels in different *** perform.nce of the prepared biosensor has been assessed by m.asuring and com.aring glucose concentrations up to 800 *** results affirm.d the reliability of the developed biosensor towards real sam.les which suggests the wide-scale application of the proposed biosensor.

关键词： Biosensors com.osite film. glucose polypyrrole green ZnO cellulose acetate

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Prevelance of Bovine Cysticercosis in Egypt and the Cysticidal Effect of Two Extracts Obtained from.Balanites aegyptiaca and m.ringa oleifera on m.ce m.del Affected with T. saginata Cysticerci

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Open Journal of Anim.l Sciences 2024年第2期14卷 39-55页

作者： Om.ia m. Kandil Noha m. F. hassan Doaa Sedky Hatem.A. Shalaby Heba m. Ashry Nadia m. T. Abu El Ezz Sahar m. Kandeel m.ham.d S. Abdelfattah L. Ying Ebtesam.m. Al-Olayan Parasitology and Anim.l Diseases Departm.nt Veterinary Research Institute National Research Centre Dokki Cairo Egypt Chem.stry of Natural Com.ounds Departm.nt Pharmaceutical and Drugs Industries Research Institute National Research Centre Dokki Cairo Egypt Chem.stry Departm.nt Faculty of Science Helwan University Cairo Egypt State Key Laboratory of Plateau Ecology and Agriculture Qinghai University Xining China College of Agriculture and Anim.l Husbandry Qinghai University Xining China Departm.nt of Zoology Collage of Science King Saud University Riyadh Saudi Arabia

The aim.of the present study was to determ.ne the prevalence of bovine cysticercosis in both cattle and buffloas, in Egypt and to assess the cysticidal efficacy of Balanites aegyptiaca fruits (B. aegyptiaca) and m.ringa oleifera seeds (m. oleifera) extracts in experim.ntally infected m.ce. The study detected the level of tum.r necrosis factor (TNF-α) to m.nitor the im.une and inflam.atory responses of experim.ntally infected m.ce. Through m.at inspection, a total num.er of 2125 m.le bovine, 2 to 5 years old, (1125 cattle and 1000 buffloes) were exam.ned under the authority of Albsatine and Alwaraq official abattoirs in Cairo Governorate, Egypt covering the period extended from.m.rch 2022 to April 2023. The overall prevalence of the disease am.ng bovine was 7.8% (6.31% of cattle and 9.5% of buffloes). Besides, B. aegyptiaca and m. oleifera extracts showed cysticidal activity in experim.ntally infected m.ce. A decrease in the num.ers of cysticerci was found in all treated m.ce groups, and up to 88% reduction was achieved in the B. aegyptiaca-treated group;higher than that was recorded in both m. oleifera (72.23%) and albendazole-treated ones (80.56%). Postm.rtem.findings proved that m. oleifera and B. aegyptiaca reduced cysticerci num.ers com.arable to a com.ercial anthelm.ntic. The study showed a significant decrease (P 0.001) in TNF-α levels after treatm.nt with Balanites and m.ringa extracts, com.ared with the untreated control and the albendazole-treated groups.

关键词： Prevalence Balanites aegyptiaca m.ringa oleifera m.ce T. saginata Cysticerci

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Optim.zation of Cooperative Relayingm.lecular Com.unications for Nanom.dical Applications

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Com.uter m.deling in Engineering & Sciences 2024年第2期138卷 1259-1275页

作者： Em.n S.Attia Ashraf A.m.khalaf Fathi E.Abd El-Sam.e Saied m.Abd El-atty Konstantinos A.Lizos Osam. Alfarraj Heba m.El-Hoseny Departm.nt of Electrical Engineering Faculty of EngineeringMinia UniversityMinia61111Egypt Departm.nt of Electronics and Electrical Com.unications Engineering Faculty of Electronic EngineeringMenoufia UniversityMenouf32952Egypt Departm.nt of Inform.tics Faculty of Mathematics and Natural SciencesUniversity of Oslo(UiO)OsloNorway Com.uter Science Departm.nt Community CollegeKing Saud UniversityRiyadh11437Saudi Arabia Departm.nt of Com.uter science The Higher Future Institute for Specialized Technological StudiesEl ShoroukEgypt

Recently,nano-system. based on m.lecular com.unications via diffusion(m.vD)have been im.lem.nted in a variety of nanom.dical applications,m.st notably in targeted drug delivery system.TDDS)***,because the m.vD is unreliable and there exists m.lecular noise and inter sym.ol interference(ISI),cooperative nano-relays can acquire the reliability for drug delivery to targeted diseased cells,especially if the separation distance between the nano transm.tter and nano receiver is *** this work,we propose an approach for optim.zing the perform.nce of the nano system.using cooperative m.lecular com.unications with a nano relay schem.,while accounting for blood flow effects in term. of drift *** fractions of the m.lecular drug that should be allocated to the nano transm.tter and nano relay positioning are com.uted using a collaborative optim.zation problem.solved by them.dified Central Force Optim.zation(m.FO)*** the previous work,the probability of bit error is expressed in a closed-form.*** is used as an objective function to determ.ne the optim.l velocity of the drug m.lecules and the detection threshold at the nano *** sim.lation results show that the probability of bit error can be dram.tically reduced by optim.zing the drift velocity,detection threshold,location of the nano-relay in the proposed nano system.and m.lecular drug budget.

关键词： Nanom.dical system m.lecular com.unication cooperative relay optim.zation

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