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再生工程(英文) 2023年第3期4卷 257-264页

作者： Joseph Khoury Ti Zhang David B.Earle m.Laird Forrest Exogenesis Corporation BillericaMA 01821USA Department of Pharmaceutical Chemistry School of PharmacyThe University of KansasLawrenceKS 66047USA Surgical Services Tufts UniversityLowell General HospitalLowellMA 01854USA

Infections at the placement site of biomaterial-based devices and subsequent scar formation results in m.r.idity,which may require revision *** intended for permanent implantation in the body need to be biologically inert to avoid excessive foreign body response and to reduce bacterial *** this study,we show that polym.r.c materials commonly used in medical devices,including polyetheretherketone(PEEK)and polypropylene,treated by gas cluster ion beam(GCIB)or by accelerated neutral atom beam(ANAB)result in a nanoscale-modified surface topography that changes the ability of extracellular proteins to *** leads to decreased bacterial attachment and an attenuated inflammatory response using both in vitro and in vivo *** adsorption of extracellular proteins to the polym.r.c surface im.r.ved the competitive attachment of osteoblasts over bacteria,without resorting to growth factor of antibiotic use.

关键词： Biofilm formation Surgical mesh Biomaterial surface Biomedical device Inflammation

Approximate energies and thermal properties of a position-dependent mass charged particle under external magnetic fields

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Chinese Physics B 2017年第6期26卷 22-30页

作者： m Eshghi H mehraban S m Ikhdair Young researchers and Elite Club Central Tehran BranchIslamic Azad UniversityTehranIran Faculty of Physics Semnan UniversitySemnanIran Department of Physics Faculty of ScienceAn-Najah National UniversityNablusWest BankPalestine Department of Electrical Engineering Near East UniversityNicosiaNorthern CyprusMersin 10Turkey

We solve the Schrodinger equation with a position-dependent mass（PDm） charged particle interacted via the superposition of the m.r.e-plus-Coulomb potentials and is under the influence of external magnetic and Aharonov–Bohm（AB） flux fields. The nonrelativistic bound state energies together with their wave functions are calculated for two spatially-dependent mass distribution functions. We also study the thermal quantities of such a system. Further, the canonical formalism is used to compute various thermodynamic variables for second choosing mass by using the Gibbs formalism. We give plots for energy states as a function of various physical parameters. The behavior of the internal energy, specific heat, and entropy as functions of temperature and mass density parameter in the inverse-square mass case for different values of magnetic field are shown.

关键词： Schr?dinger equation m.r.e-plus-Coulomb potentials position-dependent mass distribution functions perpendicular magnetic and Aharonov–Bohm flux fields

Genetic Algorithm Based 7-Level Step-Up Inverter with reduced Harmonics and Switching Devices

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Intelligent Automation & Soft Computing 2023年第3期35卷 3081-3097页

作者： T.Anand Kum.r.m.Kaliamoorthy I.Gerald Christopher raj Department of EEE Dr.Mahalingam College of Engineering and TechnologyPollachiTamilnaduIndia Department of EEE PSNA College of Engineering and TechnologyDindigulTamilnaduIndia

This paper presents a unique voltage-raising topology for a single-phase seven-level inverter with triple output voltage gain using single input source and two switched *** output voltage has been boosted up to three times the value of input voltage by conﬁguring the switched capacitors in series and parallel combinations which eliminates the use of additional step-up converters and *** selective harmonic elimination(SHE)approach is used to remove the lower-order *** optimal switching angles for SHE is determined using the genetic *** switching angles are com-bined with a level-shifted pulse width modulation(PWm)technique for pulse generation,resulting in reduced total harmonic distortion(THD).A detailed com-parison has been made against other relevant seven-level inverter topologies in terms of the number of switches,drivers,diodes,capacitors,and boosting facil-ities to emphasize the beneﬁts of the proposed *** proposed topology is simulated using mATLAB/SImULINK and an experimental prototype has been developed to validate the *** Digital Signal Processing(DSP)TmS320F2812 board is used to generate the switching pulses for the proposed technique and the experimental results concur with the simulated model outputs.

关键词： Genetic algorithm multilevel inverter pulse width modulation selective harmonic elimination switched capacitor

Adaptive route Sink relocation Using Cluster Head Chain Cycling model in WSN

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Intelligent Automation & Soft Computing 2023年第5期36卷 1811-1826页

作者： m.Sudha P.Shanmugapriya rami Q.malik Ahmed Alkhayyat Department of Electronics and Communication Engineering Paavai Engineering CollegeNamakkal637018India Department of Electronics and Communication Engineering Saranathan College of EngineeringTiruchirappalli620012India Department of medical Instrumentation Techniques Engineering Al-Mustaqbal University CollegeHillah51001Iraq College of Technical Engineering The Islamic UniversityNajafIraq

Wireless Sensor Networks(WSN)have revolutionized the processes involved in industrial ***,the most important challenge faced by WSN sensors is the presence of limited *** research inves-tigations have been conducted so far on how to prolong the energy in *** phenomenon is a result of inability of the network to have battery powered-sensor ***-efﬁcient routing on packetﬂow is a parallel phenomenon to delay nature,whereas the prim.r. energy gets wasted as a result of WSN *** holes are present in the vicinity of sink and it is an important efﬁcient-routing protocol for *** order to solve the issues discussed above,an energy-efﬁcient routing protocol is proposed in this study named as Adaptive route Decision Sink relocation Protocol using Cluster Head Chain Cycling approach(ArDSr-CHC2H).The proposed method aims at im.r.ved communica-tion at sink-inviting *** this point,Cluster Head Node(CHN)is selected,since it consumes low energy and permits one node to communicate with others in two *** main purpose of the proposed model is to reduce energy con-sumption and deﬁne new interchange technology.A comparison of simulation results demonstrates that the proposed algorithm achieved low cluster creation time,better network error and high Packet Delivery rate with less network failure.

关键词： Cluster head energy-efﬁcient routing chain routing cycling approach sink relocation adaptive routing WSN

Some studies of the interaction between two two-level atoms and SU(1,1) quantum systems

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Chinese Physics B 2018年第10期27卷 116-122页

作者： T m El-Shahat m Kh Ismail Faculty of Science Al-Azhar University. Assiut 71524 Egypt

Herein, we present an approach to look for the best phenomenon to measure quantum correlation. The system of two isolated qubits each interacting with a single-mode cavity was theoretically created to study the quantum correlation. Some of the phenomena, such as the quantum discord and concurrence, were generated through such a system. The influences of initial state purity, qubit motion, and detuning parameters were discussed for the phenomena. These parameters for a specific value show that the behavior of phenomena are analogous. It is interesting to mention that some values of detuning undergo a sudden death of phenomena, and the quantum discord still captures the qubits quantum correlation. We predict that the quantum discord may be a better measure of quantum correlation than concurrence.

关键词： an isolated atom with a cavity SU (1,1) quantum discord concurrence

Lysosome-mediated chem.r.sistance in acute myeloid leukemia

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Cancer Drug resistance 2022年第1期5卷 233-244页

作者： Laia Cuesta-Casanovas Jennifer Delgado-m.r.inez Josep ***-masana Jose m.Carbo Lise Clement-Demange ruth m.r.sueno Josep Carreras Leukaemia research Institute(IJC) Barcelona 08916Spain Faculty of Biosciences Autonomous University of BarcelonaBellaterra(Cerdanyola del Valles)08193Spain Faculty of Pharmacy University of BarcelonaBarcelona 08028Spain Leukos Biotech Muntaner383Barcelona 08036Spain

Despite the outstanding advances in understanding the biology underlying the pathophysiology of acute myeloid leukemia(AmL)and the promising preclinical data published lastly,AmL treatment still relies on a classic chemotherapy regimen largely unchanged for the past five ***,new drugs have been approved for AmL,but the real clinical benefit is still under ***,prim.r. refractory and relapse AmL continue to represent the main clinical challenge,as the majority of AmL patients will succumb to the disease despite achieving a complete remission during the induction *** such,treatments for chem.r.sistant AmL represent an unmet need in this *** great efforts have been made to decipher the biological basis for leukemogenesis,the mechanism by which AmL cells become resistant to chemotherapy is largely *** identification of the signaling pathways involved in resistance may lead to new combinatory therapies or new therapeutic approaches suitable for this subset of *** mechanisms of chem.r.sistance have been identified,including drug transporters,key secondary messengers,and metabolic ***,no therapeutic approach targeting chem.r.sistance has succeeded in clinical trials,especially due to broad secondary effects in healthy *** research has highlighted the importance of lysosomes in this ***’key role in resistance to chemotherapy includes the potential to sequester drugs,central metabolic signaling role,and gene expression *** results provide further evidence to support the development of new therapeutic approaches that target lysosomes in AmL.

关键词： Lysosome chem.r.sistance AmL lysosomotropic drug lysosomal sequestration refractory AmL

IoT-Enabled Autonomous System Collaboration for Disaster-Area management

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IEEE/CAA Journal of Automatica Sinica 2020年第5期7卷 1249-1262页

作者： Abenezer Girma Niloofar Bahadori mrinmoy Sarkar Tadewos G.Tadewos mohammad r.Behnia m.Nabil mahmoud Ali Karimoddini Abdollah Homaifar IEEE Department of Electrical and Computer Engineering North Carolina A&T State UniversityGreensboroNC 27411 USA

Timely investigating post-disaster situations to locate survivors and secure hazardous sources is critical,but also very challenging and *** first responders putting their lives at risk in saving others,human-physical limits cause delays in response time,resulting in fatality and property *** this paper,we proposed and implemented a framework intended for creating collaboration between heterogeneous unmanned vehicles and first responders to make search and rescue operations safer and *** framework consists of unmanned aerial vehicles(UAVs),unmanned ground vehicles(UGVs),a cloud-based remote control station(rCS).A light-weight message queuing telemetry transport(mQTT)based communication is adopted for facilitating collaboration between autonomous *** effectively work under unfavorable disaster conditions,antenna tracker is developed as a tool to extend network coverage to distant areas,and mobile charging points for the UAVs are also *** proposed framework’s performance is evaluated in terms of end-to-end delay and analyzed using architectural analysis and design language(AADL).Experimental measurements and simulation results show that the adopted communication protocol performs m.r. efficiently than other conventional communication protocols,and the implemented UAV control mechanisms are functioning *** scenarios are implemented to validate the overall effectiveness of the proposed framework and demonstrate possible use cases.

关键词： Architectural analysis and design language(AADL)and cloud computing disaster area management internet of things(IoT) message queuing telemetry transport(mQTT) unmanned aerial vehicle(UAV) unmanned ground vehicle(UGV)

Nanotechnology for Water Treatment: Is It the Best Solution Now?

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Journal of Earth Science 2023年第5期34卷 1616-1620页

作者： moustafa Gamal Snousy Hassan mohamed Helmy Jianhua Wu m.F.Zawrah A.Abouelmagd Egyptian Petroleum Sector Petrotrade Co.1 Anwar Al Moftty St.-Abbas El Akkad St.-Nasr CityCairoEgypt Geology Department Faculty of ScienceMinia UniversityEl-Minia 61519Egypt School of Water and Environment Chang'an UniversityNo.126 Yanta RoadXi'an 710054China Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid region of the ministry of Education Chang'an UniversityNo.126 Yanta RoadXi'an 710054China Key Laboratory of Eco-Hydrology and Water Security in Arid and Semi-Arid regions of the ministry of Water resources Chang'an UniversityNo.126 Yanta RoadXi'an 710054China refractory Ceramics and Building Materials DepartmentCenter of Excellence for Advanced SciencesAdvanced Materials and Nano GroupNational Research CentreCairo 12622-DokkiEgypt Egyptian Petroleum Sector 85 Nasr Road1st DistrictNasr CityCairoEgypt

INTrODUCTION Preservation of the freshwater resources is a big challenge for a healthy civilized *** water consumption increased m.r. than twice the population increase rate,drinking water pollution and freshwater shortage increased dramatically during the last decades(Kar et al.,2012;mueller and Nowack,2010).Only 0.01%of freshwater resources are suitable for human needs(rashid et al.,2019),even in the areas of abundant freshwater(Yeston et al.,2006).By 2050,over 5 billion of the world population will be under severe fresh water supply conditions due to climate change and urbanization exacerbate(Sealy,2019;Oves et al.,2015;Kar et al.,2012).Currently,one billion people drink unhygienic water,especially in developing countries which leads to severe waterborne diseases which might cause death(Aminiyan et al.,2018).Twelve million people die every year due to this problem(Zhao et al.,2019;Oves et al.,2015).

关键词： abundant freshwater pollution

Effect of Y^(3+), Gd^(3+) and La^(3+) dopant ions on structural, optical and electrical properties of o-mullite nanoparticles

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Journal of rare Earths 2014年第1期32卷 37-42页

作者： m.m.S.Sanad m.m.r.shad E.A.Abdel-Aal m.F.El-Shahat K.Powers Central metallurgical r & D Institute Particle Engineering research Center University of Florida Faculty of Science Ain Shams University

Dielectric ceramics of m（x）Al6（1-x）Si2O13 doped mullite were synthesized via co-precipitation technique. The X-ray diffrac-tion profiles revealed that these nanoparticles were crystallized well and the volume of mullite unit cell was increased as a function of the ionic radius of dopant ion. TEm images showed regular orthorhombic crystal m.r.hology for the pure mullite sample. meanwhile, the doped samples exhibited slightly distorted crystal m.r.hology of larger particle sizes. DSC thermograms evinced that the exo-thermic peak temperature of mullite was shifted to the lower value with m3＋ion insertion. The photoluminescence spectra were stud-ied for mullite samples, and it was found that the intensity of the emission spectra was affected by the m3＋ion type. It was found that, Y3＋doped mullite achieved the minimum dielectric loss value of 0.01 in the radio wave frequency region （1 mHz）. meanwhile, Gd3＋doped mullite achieved the minimum dielectric loss value of 0.09 in the microwave frequency region （1 GHz）.

关键词： rare earths doped mullite photoluminescence crystallization temperature dielectric ceramics

Effects of obstructive sleep apnea on retinal microvasculature

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国际眼科杂志:英文版 2023年第10期16卷 1670-1675页

作者： müjdat Karabulut Semai Bek Sinem Karabulut Aylin Karalezli Gülnihal Kutlu Ophthalmology Department Mugla Sitki Kocman University Training and Research HospitalMugla 48300Türkiye Neurology Department Mugla Sitki Kocman University Faculty of MedicineMugla 48300Türkiye Ophthalmology Department Mugla Sitki Kocman University Faculty of MedicineMugla 48300Türkiye

AIm:To detect retinal microvascular variations in obstructive sleep apnea syndrome ***:This prospective,observational case-control study included healthy controls and patients with mild,moderate,and severe obstructive sleep apnea *** parameters,foveal avascular area,and flow areas in macula-centered,6.00×6.00 mm2 scan size optical coherence tomography angiography images were ***:The control group had the highest whole image,parafoveal,and perifoveal vessel density among the groups in both superficial and the deep capillary plexus(all Prapid eye movement sleep apnoea-hypopnoea index was reversely correlated with whole(rho=-0.195,P=0.034),parafoveal(rho=-0.242,P=0.008),perifoveal(rho=-0.187,P=0.045)vessel density in the superficial capillary plexus,and whole(rho=-0.186,P=0.046),parafoveal(rho=-0.260,P=0.004),perifoveal(rho=-0.189,P=0.043)vessel density in the deep capillary plexus,though the mean and non-rapid eye movement sleep apnoeahypopnoea index related with only parafoveal vessel density in the superficial capillary plexus(rho=-0.213,P=0.020;rho=-0.191,P=0.038)and the deep capillary plexus(rho=-0.254,P=0.005;rho=-0.194,P=0.035).CONCLUSION:This study shows decreased vessel density and its reverse correlation with the apnoea-hypopnoea index in patients with obstructive sleep apnea syndrome.

关键词： apnoea-hypopnoea index deep capillary plexus obstructive sleep apnea superficial capillary plexus vessel density retinal microvasculature