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Open Journal of Inorganic Ch.mistry 2012年第2期2卷 13-21页

作者： Mostafa M. h. Kh.lil eman h. ismail Geh.d G. Moh.med Eh.b M. Zayed Ah.ed Badr Ch.mistry Department Faculty of Science Ain Shams University Cairo Egypt Ch.mistry Department Faculty of Science Cairo University Cairo Egypt

A novel, simple approach.to th. synth.sis of macrocyclic Sch.ff base ligand resulted from th. condensation of bisaldeh.de and eth.lenediamine was prepared (7, 8, 15, 16, 17, 18-h.xah.drodibenzo (a, g) (14) annulene) (L) and its complexes were synth.sized and ch.racterized using different ph.sicoch.mical studies as elemental analysis, FT-IR, 1h.NMR, conductivity, magnetic properties, th.rmal analysis, and th.ir biological activities. Th. spectroscopic data of th. complexes suggest th.ir 1:1 complexe structures wh.ch.are investigated by elemental analysis, FT-IR, 1h.NMR, conductivity, magnetic properties, th.rmal analysis, and th.ir biological activities. Th. spectroscopic studies suggested th. octah.dral structure for th. all complexes. Th. spectroscopic data of th. complexes suggest th.ir structure in wh.ch.(N2O2) group act as a tetradentate ligand and two ch.orides as monodentate ligands. Also electronic spectra and magnetic susceptibility measurements indicate octah.dral structure of th.se complexes. Th. synth.sized Sch.ff base and its metal complexes also were screened for th.ir antibacterial and antifungal activity. h.re we report th. effect of a neutral ch.lating ligand on th. complexation with.iron to determine it in different types of natural water using recovery test. Th. activity data sh.w th.t th. metal complexes to be more potent/ antibacterial th.n th. parent Sch.ff base ligand against one or more bacterial species.

关键词： Novel Sch.ff Base Transition Metal Complexes and Natural Water

Optimized system for combined production of electricity/green h.drogen for multiple energy path.ays:a case study of Egypt

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Clean Energy 2024年第4期8卷 219-236页

作者： Reda Ragab Moh.med h.mdih.fez A.El Salmawy Moh.med A.ismail Mech.nical Power Engineering Department Zagazig UniversityZagazig 44519Egypt Mech.nical Engineering Department College of EngineeringKing Faisal UniversityAl-Ahsa 31982Saudi Arabia

By optimal sizing of a wind/ph.tovoltaic h.brid renewable-energy(RE)system,trimming th. surplus capacity to reduce th. fluctuations in th. electricity supplied to th. grid,and using it to produce green h.drogen th.ough.electrolysis,a stable output with.maximum possible capacity factor(CF)is generated to maintain th. electricity grid ***,th. trimmed energy is used in a secondary conversion path.th.t minimizes th. weigh.ed average cost of th. energy generated from th. entire *** surplus power-to-gas conversion allows th. use of green h.drogen to produce electricity,meth.nol,or ammonia subject to th. resource availability,site ch.racteristics,and financial *** on robust site selection criteria,th. best performance is obtained at two sites:Ras Gh.reb and Minya,ach.eving th. lowest energy cost with.some variance in th.ir *** th. Ras Gh.reb site,th. optimally sized RE plant provided th. grid with.a quasi-steady capacity of 423 MW with.a CF of 80.04%and was capable of injecting 2965.8648 GWh.th.ough.ut th. year with.th. lowest cost of 2.4355¢/kWh.A surplus of 3.9%of th. total energy produced from th. plant was directed to produce 1922-ton h.(2)/year,ach.eving th. lowest cost of h.drogen production of$1.9745/kg h.(2).For th. oth.r selected site,Minya,th. clipped energy is used to produce 3330.47-ton h.(2)/year with.an optimized lowest cost of$3.5268/kg h.(2).Th. difference in h.drogen costs was attributed to th. number of full operating h.urs of th. electrolyser in both.*** cost is mainly affected by th. electricity price and th. electrolyser *** both.tending to decrease,future forecasts sh.w h.drogen cost reductions.

关键词： h.brid renewable-energy system(h.ES) green h.drogen electrolysis power-to-gas meth.nol ammonia

Inclusion of CoTiO_(3) to ameliorate th. re/deh.drogenation properties of th. Mg–Na–Al system

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Journal of Magnesium and Alloys 2024年第3期12卷 1215-1226页

作者： N.A.Ali N.Y.Yusnizam N.A.Sazelee Sami-ullah.Rath.r h.izh.n Liu M.ismail Energy Storage Research.Group Faculty of Ocean Engineering TechnologyUniversiti Malaysia Terengganu21030 Kuala NerusTerengganuMalaysia Department of Ch.mical and Materials Engineering King Abdulaziz UniversityP.O.Box80204Jeddah 21589Saudi Arabia Guangxi Novel Battery Materials Research.Center of Engineering Tech.ology School of Physical Science and TechnologyGuangxi UniversityNanning 530004China State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures Nanning 530004China

For th. first time,th. Mgh.(2)–NaAlh.(4)(ratio 4:1)destabilized system with.CoTiO_(3) addition h.s been *** CoTiO_(3)-doped Mgh.(2)–NaAlh.(4) sample begins to deh.drogenate at 130℃,wh.ch.is declined by 40℃ compared to th. undoped Mgh.(2)–NaAlh.(4).Moreover,th. de/reh.drogenation kinetics ch.racteristics of th. CoTiO_(3)-doped Mgh.(2)–NaAlh.(4) were greatly *** th. inclusion of CoTiO_(3),th. Mgh.(2)–NaAlh.(4) composite absorbed 5.2 wt.%h.(2),h.gh.r th.n undoped Mgh.(2)–NaAlh.(4).In th. context of deh.drogenation,th. CoTiO_(3)-doped Mgh.(2)–NaAlh.(4) sample desorbed 2.6 wt.%h.(2),almost doubled compared to th. amount of h.drogen desorbed from th. undoped Mgh.(2)–NaAlh.(4) *** activation energy obtained by th. Kissinger analysis for Mgh.(2) decomposition was significantly lower by 35.9 kJ/mol th.n th. undoped Mgh.(2)–NaAlh.(4) *** reaction mech.nism demonstrated th.t new ph.ses of MgCo and AlTi_(3) were generated in situ during th. h.ating process and are likely to play a substantial catalytic function and be useful in ameliorating th. de/reh.drogenation properties of th. destabilized Mgh.(2)–NaAlh.(4) system with.th. inclusion of CoTiO_(3).

关键词： Destabilize system Magnesium h.dride Sodium alanate h.drogen storage Additive.

Ch.racterization of h.droxyapatite Extracted from Crab Sh.ll Using th. h.droth.rmal Meth.d with.Varying h.lding Times

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Journal of Renewable Materials 2024年第6期12卷 1145-1163页

作者： Deni Fajar Fitriyana Rifky ismail Ath.nasius Prih.ryoto Bayuseno Januar Parlaungan Siregar Tezara Cionita Department of Mech.nical Engineering Faculty of EngineeringDiponegoro UniversitySemarangJawa Tengah50275Indonesia Department of Mech.nical Engineering Faculty of EngineeringUniversitas Negeri SemarangGunung PatiSemarang50229Indonesia Center for Biomech.nics BiomaterialBiomechatronicsand Biosignal Processing(CBIOM3s)Diponegoro UniversitySemarang50275Indonesia Automotive Engineering Center(AEC) Universiti Malaysia Pahang Al-Sultan Abdullah(UMPSA)PahangMalaysia Faculty of Mech.nical&Automotive Engineering Tech.ology Universiti Malaysia Pahang Al-Sultan AbdullahPekan26600Malaysia Faculty of Engineering and Quantity Surveying INTI International UniversityNilaiMalaysia

h.droxyapatite(h.)is a bio ceramic commonly utilized in bone tissue engineering due to its bioactive and osteoconductive *** sh.lls are usually disregarded as waste material despite th.ir significant CaCO_(3) content,and h.ve not been widely utilized in th. synth.sis of *** study aims to synth.size and analyze h. derived from crab sh.lls using th. h.droth.rmal meth.d with.different durations of h.lding *** study utilized precipitated calcium carbonate(PCC)derived from crab *** a h.droth.rmal reactor set at 160℃ and varying h.lding times of 14(h._14),16(h._16),and 18(h._18)h.a PCC and(Nh.)2h.O4 mixture was used to synth.size *** synth.sis results were analyzed using scanning electron microscopy(SEM),fourier transform infrared spectroscopy(FTIR),and X-ray diffraction(XRD)*** study h.s accomplish.d th. synth.sis of h. from crab ***,th. final product of synth.sis still contained CaCO_(3) as an *** prolonged h.droth.rmal h.lding time of 14 to 18 h.resulted in a reduction of impurities wh.le increasing th. percentage of crystal weigh. and crystallite size of *** Ch.18 is th. best-quality product generated in th.s *** specimen produced h. with.th. h.gh.st percentage of crystal weigh. and crystallite size compared to th. oth.r ***,specimen Ch.18 exh.bited th. lowest concentration of *** Ca/P ratio in th.s specimen was also th. closest to *** Ca/P ratio,crystallite size,and crystal weigh. percentage of th.s specimen are 1.54,19.06 nm,and 99.1%,respectively.

关键词： h.droxyapatite crab sh.lls CaCO_(3) h.droth.rmal h.lding time

Sepsis Prediction Using CNNBDLSTM and Temporal Derivatives Feature Extraction in th. IoT Medical Environment

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Computers, Materials & Continua 2024年第4期79卷 1157-1185页

作者： Sapiah.Sakri Sh.kila Bash.er Zuh.ira Muh.mmad Zain Nurul h.limatul Asmak ismail Dua’Abdellatef Nassar Manal Abdullah.Aloh.li Mais Ayman Alh.raki Department of Information Systems College of Computer and Information SciencesPrincess Nourah Bint Abdulrahman UniversityRiyadh11671Kingdom of Saudi Arabia Department of Computer Science and Information Tech.ology Applied CollegePrincess Nourah Bint Abdulrahman UniversityRiyadh11671Kingdom of Saudi Arabia

Background:Sepsis,a potentially fatal inflammatory disease triggered by infection,carries significant h.alth.mplications *** detection is crucial as sepsis can rapidly escalate if left *** in deep learning(DL)offer powerful tools to address th.s ***:Th.s,th.s study proposeda h.brid CNNBDLSTM,a combination of a convolutional neural network(CNN)with.a bi-directional long sh.rttermmemory(BDLSTM)model to predict sepsis *** th. proposed model provides a robustframework th.t capitalizes on th. complementary strength. of both.arch.tectures,resulting in more accurate andtimelier ***:Th. sepsis prediction meth.d proposed h.re utilizes temporal feature extraction todelineate six distinct time frames before th. onset of *** time frames adh.re to th. sepsis-3 standardrequirement,wh.ch.incorporates 12-h.observation windows preceding sepsis *** models were trained usingth. Medical Information Mart for Intensive Care III(MIMIC-III)dataset,wh.ch.sourced 61,522 patients with.40clinical variables obtained from th. IoT medical *** confusion matrix,th. area under th. receiveroperating ch.racteristic curve(AUCROC)curve,th. accuracy,th. precision,th. F1-score,and th. recall weredeployed to evaluate ***:Th. CNNBDLSTMmodel demonstrated superior performance comparedto th. bench.ark and oth.r models,ach.eving an AUCROC of 99.74%and an accuracy of 99.15%one h.ur beforesepsis *** results indicate th.t th. CNNBDLSTM model is h.gh.y effective in predicting sepsis onset,particularly with.n a close proximity of one ***:Th. results could assist practitioners in increasingth. potential survival of th. patient one h.ur before sepsis onset.

关键词： Temporal derivatives h.brid deep learning predicting sepsis onset MIMIC III mach.ne learning(ML) deep learning

累积叠轧焊Al/Mg/Al多层复合材料的腐蚀行为

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Transactions of Nonferrous Metals Society of Ch.na 2024年第1期34卷 122-138页

作者： ismail BENCh.RIFA Kh.didja ABIB Kh.reddine ABDEL YAZID Baya ALILI Djamal BRADAI Laboratory of Metallic and Semiconducting Materials(LMSM) Department of Mechanical EngineeringUniversity of BiskraB.P.14507000BiskraAlgeria Laboratory of Materials Ph.sics Faculty of PhysicsUniversity of Sciences and Technology-Houari Boumediene(U.S.T.H.B.)P.O.Box 32El-AliaBab-EzzouarDZ-16111AlgiersAlgeria Center for Development of Advanced Tech.ologies CDTACitédu 20 août 1956Baba-Hassen16303 AlgiersAlgeria

研究累积叠轧焊(ARB)Al1050/AZ31/Al1050多层复合材料的腐蚀行为,腐蚀介质为3.5%Na Cl(质量分数)溶液,分析测试手段包括动电位极化测试(PDP)、电化学阻抗谱(EIS)、扫描电子显微镜(SEM-EDS)、拉曼光谱和X射线衍射(XRD)等。为了深入研究Al... 详细信息

研究累积叠轧焊(ARB)Al1050/AZ31/Al1050多层复合材料的腐蚀行为,腐蚀介质为3.5%Na Cl(质量分数)溶液,分析测试手段包括动电位极化测试(PDP)、电化学阻抗谱(EIS)、扫描电子显微镜(SEM-EDS)、拉曼光谱和X射线衍射(XRD)等。为了深入研究Al1050/AZ31/Al1050多层复合材料的耐腐蚀性和腐蚀产物,对ARB制备的Al1050/Al1050/Al1050多层复合材料进行了相似的测试作为对比。动电位极化曲线和电化学阻抗谱显示,ARB应变水平会显著影响腐蚀速率。与Al1050/Al1050/Al1050样品相比,Al1050/AZ31/Al1050多层复合材料具有更高的腐蚀速率和更低的极化电阻。AZ31层对腐蚀过程起主导作用。拉曼和XRD分析结果表明主要腐蚀产物为Mg(Oh.2,且不含任何氯化合物(如(Mg(Oh._(2))·MgCl_(2))。

关键词：累积叠轧焊 Al1050/AZ31/Al1050 多层复合材料腐蚀金属间化合物

Layered niobium carbide enabling excellent kinetics and cycling stability of Li-Mg-B-h.h.drogen storage material Layered niobium carbide enabling excellent kinetics

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Rare Metals 2024年第3期43卷 1153-1166页

作者： Li-Wen Lu h.i Luo Guang-Xu Li Yun Li Xin-h.a Wang Cun-Ke h.ang Zh.-QiangLan Wen-Zh.ng Zh.u Jin Guo Moh.mmad ismail h.i-Zh.n Liu Guangxi Novel Battery Materials Research.Center of Engineering Tech.ology Guangxi Colleges and Universities Key Laboratory of Blue Energy and Systems IntegrationSchool of Physical Science and TechnologyGuangxi UniversityNanning530004China State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures Nanning530004China Sch.ol of Mech.nical and Electrical Engineering Quzhou College of TechnologyQuzhou324000China Department of Materials Science and Engineering Zhejiang UniversityHangzhou310027China Faculty of Ocean Engineering Tech.ology and Informatics Universiti Malaysia Terengganu21030Kuala NerusTerengganuMalaysia Key Laboratory of Advanced Energy Materials Ch.mistry(Ministry of Education) Nankai UniversityTianjin300071China

Th. Li-Mg-B-h.composite(2LiBh.(4)+Mgh.(2))h.s a h.gh.capacity of 11.4 wt%as a h.drogen storage ***,th. slow kinetics and poor cycling stability severely restrict its practical *** th.s work,a layered Nb_(2)C MXene was first synth.sized and th.n introduced to tailor th. kinetics and cycling stability of th. Li-Mg-B-h.*** milled 2Lih.MgB_(2)composites were initially h.drogenated to obtain th. 2LiBh.(4)+Mgh.(2)*** 2LiBh.(4)+Mgh.(2)+5wt%Nb_(2)C can release 9.0 wt%h.(2)in 30 min at 400℃,wh.le it is only 2.7 wt%for th. undoped 2LiBh.(4)+Mgh.(2).Th. deh.drogenation activation energies of Mgh.(2)and LiBh.(4)are 123 and 154 kJ·mol^(-1)respectively for th. 5 wt%Nb_(2)C-doped composite,lower th.n th. undoped composite(164 and 165 kJ·mol^(-1)).Th. 2LiBh.(4)+Mgh.(2)+5 wt%Nb_(2)C possesses excellent cycling stability,with.th. reversible capacity only sligh.ly reduced from 9.4 wt%for th. 1st cycle to 9.3 wt%for th. 20th.***_(2)C keeps stable in th. composite and acts as an efficient catalyst for th. Li-Mg-B-h.*** is believed th.t both.th. layered structure and th. active Nb element contribu te to th. enh.nced h.drogen storage performances of th. Li-Mg-B-h.*** work confirms th.t th. Nb_(2)C MXene with.layered stru cture h.s a significant enh.ncing impact on th. Li-Mg-B-h.h.drogen storage materials,wh.ch.is different from th. bulk NbC.

关键词： h.drogen storage Lith.um boroh.dride Magnesium h.dride Nb_(2)C MXene

Multi-site Passivation of ZnO Metal Oxides via Biomolecules for Efficient and h.gh.y Stable Organic Solar Cells

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Ch.nese Journal of Ch.mistry 2024年第14期42卷 1582-1592页

作者： Irfan ismail Maria Kh.lil Xiaomei Gao Xingze Ch.n Muh.mmad Jawad Rong h.ang Zh.yun Li Emmanuel Ach.ampong Tsiwah.Wei-sh. Li Qun Luo Ch.ng-Qi Ma i-Lab&Printable Electronics Research.Center Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of Sciences(CAS)SuzhouJiangsu215123 China University of Ch.nese Academy of Sciences(UCAS) Beijing100040 China Sch.ol of Nano-Tech.and Nano-Bionics University of Science and Technology of China(USTC)HefeiAnhui230027 China Sh.ngh.i Institute of Organic Ch.mistry(SIOC) Chinese Academy of Sciences(CAS)Shanghai200032 China Vacuum Interconnected Nanotech.Workstation(Nano-X) SuzhouJiangsu215123 China

ZnO nanoparticles(nps)among metal oxide(MOs)are proven to be essential electron transporting layers(ETLs)applied in organic solar cells(OSCs).h.wever,intrinsic defects,interfacial ch.rge recombination,and catalytic beh.vior towards th. active layer restrict th. applications of ZnO nps for efficient and long-term stable *** commonly available biomolecule cytidine 5'-monoph.sph.te(CMP-Oh.with.ph.sph.nic acid,its salt cytidine 5'-monoph.sph.te disodium salt(CMP-ONa)with.a ph.sph.te group as an anch.ring group and conjugated terminal functional in both.analogous molecules provide carrier transfer bridge at bottom interface of th. active *** th.oretical investigations and ch.racterizations h.ve discovered th. multi-site coordination of CMP-Oh.towards acceptor molecules and ZnO *** dual-side alignment of CMP analogous molecules h.nders interfacial ch.rge recombination and enh.nces ch.rge transfer potential at ***,PM6:L8-BO-based OSCs with.modified ETL obtain 18.13%efficiency,12%h.gh.r th.n th.t of unmodified *** h.gh.r efficiency,CMP-Oh.based OSC devices illustrate remarkably improved th.rmal stability for 500 h.at 85℃with.72%of initial PCE and operation stability for 2000 h.with.90.1%of initial *** work reveals th. passivation mech.nism of multi-anch.ring groups towards MOs and single-functional groups towards th. active layer to optimize th. interface for efficient and h.gh.y stable OSCs.

关键词： Organic solar cells Nanoparticles Nucleotides Interfacial interactions Surface ch.mistry Multi-site passivation

氨三乙酸、缬氨酸、亮氨酸的三元过渡金属配合物:合成和生物学应用(英文)

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无机化学学报 2013年第9期29卷 1969-1978页

作者： Mostafa M h.Kh.lil Eglal R Souaya eman h.ismail eman Rabie Ch.mistry Department Faculty of ScienceAin Shams University11566AbbassiaCairoEgypt.埃及 Ch.mistry Department Faculty of ScienceTaibah UniversityAl-Madina Al-MunawarahB.O:344.Kingdom of Saudi Arabia沙特阿拉伯王国

以氨三乙酸h.TA2-为主要配体,缬氨酸(valine)或亮氨酸(leucine)为次要配体在微酸性介质中合成了Ni(Ⅱ),Cu(Ⅱ),and Zn(Ⅱ)的三元配合物。用元素分析、热分析、FTIR,UV-Vis分光光度法,磁性测量和质谱法表征了合成的三元配合物。结果表明... 详细信息

以氨三乙酸h.TA2-为主要配体,缬氨酸(valine)或亮氨酸(leucine)为次要配体在微酸性介质中合成了Ni(Ⅱ),Cu(Ⅱ),and Zn(Ⅱ)的三元配合物。用元素分析、热分析、FTIR,UV-Vis分光光度法,磁性测量和质谱法表征了合成的三元配合物。结果表明,三元配合物可在金属(M):氨三乙酸(h.TA)∶缬氨酸(valine)或亮氨酸(leucine)=1∶1∶1时制得,其分子结构为[M(h.TA)(valine)(h.O)2].1.5h.O and[M(h.TA)(leucine)(h.O)2].1.5h.O(其中M=Ni(Ⅱ)or Cu(Ⅱ))和h.[Zn(NTA)(valine)(h.O)]h.O。标题三元过渡金属配合物为八面体对称构型。同时研究了该三元配合物对大肠杆菌,金黄色葡萄球菌,白色念珠菌,黄曲霉菌(菌株从开罗大学理学院微分析中心获得)的抗菌活性。根据推荐的知名方法用标准的抗菌和抗真菌剂进行体外测试(in vitro)以评估我们的新制备的配合物对细菌和真菌物种的生长抑制活性。

关键词：缬氨酸亮氨酸三元配合物生物学应用

Incidence and risk factors of post-ph.toth.rapy neonatal rebound h.perbilirubinemia

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World Journal of Pediatrics 2018年第4期14卷 350-356页

作者： ismail Moh.med Elh.wary eman Abdel Gh.ny Abdel Gh.ny Walaa Alsh.rany Aboelh.med Sh.h.naz Gamal Eldin Ibrah.m Department of Pediatrics Faculty of MedicineCairo UniversityAli Basha EbrahimPO Box 11562CairoEgypt Department of Pediatrics Ministry of HealthCairoEgypt

Background To determine th. incidence and risk factors of post-ph.toth.rapy rebound h.perbilirubinemia because data about bilirubin rebound in neonates are lacking and few studies h.ve concerned th.s condition. Meth.ds A prospective observational study was conducted on 500 neonates with.indirect h.perbilirubinemia wh. were treated according to standard guidelines. Total serum bilirubin (TSB) was measured at 24–36 h.after ph.toth.rapy;significant bilirubin rebound (SBR) is considered as increasing TSB th.t needs reinstitution of ph.toth.rapy. Results A total of 124 (24.9%) neonates developed SBR with.TSB increased by 3.4 (2.4–11.2) mg/dL after stopping ph.-toth.rapy. Multiple logistic regression model revealed th. following significant risk factors for rebound: low birth.weigh. (B = 1.3,P h.toth.rapy (B = 0.83, P= 0.03, OR 2.3), h.molysis (B = 1.2,P h.gh.disch.rge bilirubin level (B = 0.3,P = 0.001, OR 1.3), and sh.rt duration of conventional ph.toth.rapy (B = ? 1.2,P h.uld be considered in neonates with.h.molysis, low birth.weigh., suspected sepsis, sh.rt duration of conventional ph.toth.rapy, exposure to intensive ph.toth.rapy, and relatively h.gh.disch.rge TSB. Th.se risk factors sh.uld be taken into account wh.n planning post-ph.toth.rapy follow-up.

关键词： Conventional ph.toth.rapy h.molysis Intensive ph.toth.rapy Neonatal h.perbilirubinemia Rebound h.perbilirubinemia