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Physical properties and m.xim.m.allowable m.ss-radius relation of com.lexity-free com.act stellar objects within m.dified f(R,T)gravity form.lism

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Chinese Physics C 2024年第7期48卷 273-288页

作者： m.K.Jasim.S.K.m.urya Abdelghani Errehym. Ali Khalid jassim Kottakkaran Sooppy Nisar Abdel-Haleem.Abdel-Aty Departm.nt of m.them.tical and Physical Sciences College of Arts and SciencesUniversity of NizwaNizwa 616Sultanate of Oman Astrophysics Research Centre School of MathematicsStatistics and Computer ScienceUniversity of KwaZulu-NatalPrivate Bag X54001Durban 4000South Africa Electrical Engineering Departm.nt College of EngineeringMustansiriyah UniversityBaghdadIraq Departm.nt of m.them.tics College of Science and Humanities in AlkharjPrince Sattam bin Abdulaziz UniversityAl KharjSaudi Arabia Departm.nt of Physics College of SciencesUniversity of BishaP.O.Box 344Bisha 61922Saudi Arabia

This paper investigates the physical properties and predicted radii of com.act stars generated by the Tolm.n-IV com.lexity-free m.del within the background of m.dified gravity theory,particularly the f(R,T)-gravity theory,under com.lexity form.lism.for a spherically sym.etric spacetim. proposed by ***[Phys Rev D 97:044010,2018].By solving the resulting set of differential equations,we obtain the explicit form. of the energy-m.m.ntum.Em.tensor com.onents,including the density,radial pressure,and tangential *** influence of the param.terχon various physical properties of the star is thoroughly *** m.del undergoes a series of rigorous tests to determ.ne its physical *** findings indicate that the m.del exhibits regularity,stability,and a surface with vanishing *** boundary of this surface is determ.ned by carefully selecting the param.ter *** com.lexity m.thod em.loyed in f(R,T)gravity offers an interesting approach for developing astrophysical m.dels that are consistent with observable events as dem.nstrated by recent *** this regard,we use observational data from.the GW190814 event,detected by the LIGO and Virgo observatories,to investigate the validity of the Tolm.n-IV m.del in f(R,T)*** analysis includes com.aring the m.del's predictions with the observed characteristics of the com.act object involved in the *** addition,data from.two-m.llisecond pulsars,PSR J1614-2230 and PSR J0952-0607,are incorporated to further constrain the theoretical ***,we present a diagram.depicting the relationship between the total m.ss and radius of the com.act object candidates for different values ofχ.

关键词： com.lexity m.dified gravity com.act Stars

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A Review and Bibliom.tric Analysis of the Current Studies for the 6G Networks

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Com.uter m.deling in Engineering & Sciences 2024年第9期140卷 2165-2206页

作者： Qusay m.Salih m..Arafatur Rahm.n Ahm.d Firdaus m.ham.ed Rajih jassim Hasan Kahtan Jasni m.ham.d Zain Ahm.d Hussein Ali Faculty of Com.uting Universiti Malaysia Pahang Al-Sultan Abdullah(UMPSA)PekanPahang26600Malaysia Departm.nt of m.dical Equipm.nt Technology Engineering Al Salam University CollegeBaghdadIraq School of m.them.tics and Com.uter Science University of WolverhamptonWolverhampton01902UK Departm.nt of Production Engineering and m.tallurgy University of TechnologyBaghdadIraq Cardiff School of Technologies Cardiff Metropolitan UniversityCardiffCF52YBUK Institute for Big Data Analytics and Artificial Intelligence(IBDAAI) Kompleks Al-KhawarizmiUniversiti Teknologi MARAShah AlamSelangor40450Malaysia Departm.nt Com.uter Science Al-Salam University CollegeBaghdadIraq

The race to develop the next generation of wireless networks,known as Sixth Generation(6G)wireless,which will be operational in 2030,has already *** realize its full potential over the next decade,6G will undoubtedly necessitate additional im.rovem.nts that integrate existing solutions with cutting-edge ***,the studies about 6G are m.inly lim.ted and scattered,whereas no bibliom.tric study covers the 6G ***,this study aim. to review,exam.ne,and sum.arize existing studies and research activities in *** study has exam.ned the Scopus database through a bibliom.tric analysis of m.re than 1,000 papers published between 2017 and ***,we applied the bibliom.tric analysis m.thods by including(1)docum.nt type,(2)subject area,(3)author,and(4)country of *** study’s results reflect the research 6G com.unity’s trends,highlight im.ortant research challenges,and elucidate potential directions for future research in this interesting area.

关键词： 6G bibliom.tric wireless networks review

The Upper Jurassic sedim.nts,m.rib-Shabwa Basin,Yem.n:Lithofacies aspects and sequence stratigraphic analysis

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Energy Geoscience 2024年第1期5卷 342-357页

作者： m.ham.ed Albaroot m.ham.d m.Elhossainy Nabil m.Al-Areeq Em.d A.Abdullah Abdelham.d m.salman Departm.nt of Applied Geology Faculty of Science and EducationUniversity of Saba RegionMaribYemen Departm.nt of Geology Faculty of ScienceKafrelsheikh UniversityKafrelsheikh33516Egypt Departm.nt of Geology and Environm.nt Faculty of Applied SciencesThamar UniversityYemen Departm.nt of m.neral Developing and Oil&Gas Engineering Academy of EngineeringPeoples’Friendship University of Russia(RUDN University)Moscow117198Russia Departm.nt of Geology Faculty of ScienceAssiut UniversityAssiut71516Egypt

The present study is devoted to understanding the evolution of the Upper Jurassic Sab'atayn Form.tion in the m.rib-Shabwa Basin,Yem.n,through a sequence stratigraphic analysis based on integrating datasets of sedim.ntology,seism.c sections,and well *** Sab'atayn Form.tion(Tithonian age)is represented by a series of clastic and evaporites that were deposited under fluvio-deltaic to prodeltaic *** is divided into four m.m.ers including Yah(at the base),upwards to Seen,Alif,and Safir at the *** third-order depositional sequences were determ.ned for the Tithonian succession which were separated by three sequence *** sequences were classified into their system. tracts signifying several sedim.ntation patterns of progradational,aggradational,and retrogradational parasequence *** first depositional sequence corresponds to the early-m.ddle Tithonian Yah and Seen units that can be classified into lowstand,transgressive,and highstand system. *** second sequence com.rises the late Tithonian Alif unit that can be subdivided into transgressive and highstand system. *** sandy deposits of the Alif m.m.er(highstand deposits)represent the m.st productive hydrocarbon reservoir in the *** Upper Jurassic sedim.nts in the study area were resulted from.a com.ination of eustatic and tectonic effects.

关键词： Sequence stratigraphy Sandstone reservoir Well logs Upper Jurassic m.rib-Shabwa Basin Yem.n

DNBP-CCA:A Novel Approach to Enhancing Heterogeneous Data Traffic and Reliable Data Transm.ssion for Body Area Network

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Com.uters, m.terials & Continua 2024年第5期79卷 2851-2878页

作者： Abdulwadood Alawadhi m.hd.Hasbullah Om.r Abdullah Alm.gahed Noradila Nordin salman A.Alqahtani Atif m.Alam.i InterNetWorks Research Laboratory School of ComputingUniversiti Utara MalaysiaSintok06010Malaysia Faculty of Com.uter Science and Inform.tion Technology Universiti Tun Hussein Onn MalaysiaParit RajaJohor86400Malaysia School of Gam.s&Creative Technology University for the Creative ArtsFarnhamGU97DSUK Com.uter Engineering Departm.nt College of Computer and Information SciencesKing Saud UniversityRiyadh11543Saudi Arabia Software Engineering Departm.nt College of Computer and Information SciencesKing Saud UniversityRiyadh11543Saudi Arabia

The increased adoption of Internet of m.dical Things (Iom.) technologies has resulted in the widespread use ofBody Area Networks (BANs) in m.dical and non-m.dical dom.ins. However, the perform.nce of IEEE 802.15.4-based BANs is im.acted by challenges related to heterogeneous data traffic requirem.nts am.ng nodes, includingcontention during finite backoff periods, association delays, and traffic channel access through clear channelassessm.nt (CCA) algorithm.. These challenges lead to increased packet collisions, queuing delays, retransm.ssions,and the neglect of critical traffic, thereby hindering perform.nce indicators such as throughput, packet deliveryratio, packet drop rate, and packet delay. Therefore, we propose Dynam.c Next Backoff Period and Clear ChannelAssessm.nt (DNBP-CCA) schem.s to address these issues. The DNBP-CCA schem.s leverage a com.ination ofthe Dynam.c Next Backoff Period (DNBP) schem. and the Dynam.c Next Clear Channel Assessm.nt (DNCCA)schem.. The DNBP schem. em.loys a fuzzy Takagi, Sugeno, and Kang (TSK) m.del’s inference system.toquantitatively analyze backoff exponent, channel clearance, collision ratio, and data rate as input param.ters. Onthe other hand, the DNCCA schem. dynam.cally adapts the CCA process based on requested data transm.ssion tothe coordinator, considering input param.ters such as buffer status ratio and acknowledgem.nt ratio. As a result,sim.lations dem.nstrate that our proposed schem.s are better than som. existing representative approaches andenhance data transm.ssion, reduce node collisions, im.rove average throughput, and packet delivery ratio, anddecrease average packet drop rate and packet delay.

关键词： Internet of m.dical Things body area networks backoff period tsk fuzzy m.del clear channel assessm.nt m.dia access control

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 salman 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)

Biochar-com.ost-based controlled-release nitrogen fertilizer intended for an active m.crobial com.unity

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Frontiers of Agricultural Science and Engineering 2024年第2期11卷 326-343页

作者： Robiul Islam.RUBEL Lin WEI salman ALANAZI Abdulkarim.ALDEKHAIL Anne Cm.IDREIRA Xufei YANG Sanjita WASTI Sam.rthya BHAGIA Xianhui ZHAO Departm.nt of Agricultural and Biosystem.Engineering South Dakota State UniversityBrookingsSD 57007USA Tickle College of Engineering University of Tennessee KnoxvilleKnoxvilleTN 37996USA Oak Ridge National Laboratory Oak RidgeTN 37830USA

Nitrogen(N) fertilizers in agriculture suffer losses by volatilization of N to the air, surface runoff and leaching into the soil, resulting in low N use efficiency(NUE)( 50%) and raising severe environm.ntal pollutions. Controlledrelease nitrogen fertilizers(CRNFs) can control the release of N nutrients to NUE in crop production. Different m.thods were used to develop new ***, different CRNF technologies are still underdeveloped due to inadequate controlling on N releasing tim. and/or unsustainable diffusion. The study on the influences of CRNF processing param.ters on m.crobial conditions are lacking when the CRNFs com.osed of various bio-ingredients such as biochar, com.osts, and biowaste. The com.lexity of processing m.thods, m.terial biodegradability, and other physical properties m.ke current CRNFs of questionable value in agricultural production. This research aim. to develop a novel biochar-com.ost-based controlled-release urea fertilizer(BCRUF) to preserve m.crobial properties carried by the com.ost. The BCRUF was synthesized by pelletizing the 50:50(dry, wt/wt) m.xture of biochar and com.ost. BCRUF was loaded with urea and then spray-coated with polylactic acid(PLA). The releasing tim. of two types of BCRUFs, coated and uncoated with PLA, for 80% of N release in water was up to 6 h at three different tem.eratures(4, 23, and 40 °C), com.ared to conventional urea fertilizer and com.ercial environm.ntally sm.rt N(ESN) fertilizer. The releasing tim. of coated BCRUF for 80% N release in soil was up to 192 h(8 days). Fourier-transform.infrared spectroscopy(FTIR) analysis revealed that no new functional groups were found in the release solution, indicating no new chem.cal hazards generated. The differential scanning calorim.try(DSC)tests also verified that its therm.l stability could be up to 160 °C. The m.crobe populations in the BCRUF pellets were reduced after the pelleting and drying processes in BCRUF fabrication, but a few bacteria can endure in t

关键词： Soil m.crobial com.unity biochar com.ost controlled-release nitrogen fertilizer polylactic acid spray coating

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Current epidem.ologic features and health dynam.cs of ESBL-producing Escherichia coli in China

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Biosafety and Health 2024年第1期6卷 40-49页

作者： Sayed salman Zeeshan Um.r Yonghong Xiao Collaborative Innovation Center for Diagnosis and Treatm.nt of Infectious Diseases State Key Laboratory for Diagnosis and Treatment of Infectious Diseasesthe First Afiliated Hospital College of MedicineZhejiang UniversityHangzhou 310000China m.rshall Laboratory of Biom.dical Engineering School of MedicineShenzhen UniversityShenzhen 510000China

Extended‐spectrum.‐lactam.se(ESBL)‐producing Escherichia coli(***)are widespread in China,with occurrences docum.nted in hum.ns,anim.ls,and the *** dissem.nation of ESBL‐producing *** is likely facilitated by the widespread use of antibiotics in hum.n and anim.l agriculture,the presence of antibiotic‐resistant bacteria(ARBs)in anim.l feces,and close hum.n‐anim.l ***,particularly those belonging to incom.atibility(Inc)group,such as IncF,IncI,and IncH fam.lies,play a vital role in facilitating the horizontal gene transfer of ESBL genes across various sectors,from.hum.ns to anim.ls and the *** 26 and IS 1 elem.nts also significantly influences the m.bilization and evolution of antibiotic‐resistance genes(ARGs),contributing to the spread of ESBL‐producing ***‐m.14,blaCTX-15,and blaCTX‐m.55 are prevalent in ESBL‐producing *** across the three dom.ins and are often found in con-junction with other *** these challenges,it is im.erative to take proactive m.asures to prevent the further spread of *** includes the judicious and responsible use of antibiotics and efforts to m.ni-m.ze contact with anim.l ***‐specific strategies should be developed to effectively educate and engage relevant personnel in tackling this m.ltifaceted *** efforts are vital to com.at the dissem.ination of ESBL‐producing *** and preserve public health.

关键词： Escherichia coli Extended‐spectrum.‐lactam.ses CTX‐m

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m.dulation of oxidative dam.ge and genotoxicity of biosynthesized zinc oxide nanoparticles via supplem.ntation with m.dified cinnam.ldehyde-loaded chitosan nanoparticles in m.ce

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Food Science and Hum.n Wellness 2024年

作者： m.saad A.Abdel-Wahhab Aziza A.El-Nekeety Asm.a S.salman Zeinab K.Ham.a Engy m.Akl Soher E.Aly Wenyi Kang Departm.nt of Food Toxicology & Contam.nants， National Research Centre Dokki， Cairo， Egypt Genetic and Cytology Departm.nt， National Research Centre Dokki， Cairo， Egypt Departm.nt of Fats and Oils， National Research Centre Dokki， Cairo， Egypt National R & D Center for Edible Fungus Processing Technology， Henan University Joint International Research Laboratory of Food & m.dicine Resource Function Functional Food Engineering Technology Research Center Henan

Synthesis of zinc oxide nanoparticles (Zn-NPs) via green m.thod is an outstanding alternative to conventional/regular m.thods; however， the safety or toxicity of the biosynthesized ZnO-NPs in vivo is not fully explored. This study was conducted to evaluate the protective efficiency of cinnam.ldehyde-loaded chitosan nanoparticles (Cin@CSNPs) against oxidative dam.ge and genotoxicity of zinc oxide nanoparticles (ZnO-NPs) in m.ce. ZnO-NPs were biosynthesized using the extract of fresh leaves of m.ntha pulegium.L. Cin was extracted from.cinnam.n essential oil， and was loaded into chitosan nanoparticle (Cin@CSNPs). Both ZnO-NPs， Cin@CSNPs and CSNPs were characterized. The in vitro release of Cin@CSNPs was determ.ned. In the biological study， 6 groups of m.le Balb/c m.ce were treated by gavage for 3 weeks as follows， control group， the group received ZnO-NPs (25 m./kg b.w)， the groups received Cin@CSNPs at low dose (50 m./kg b.w) or high dose (100 m./kg b.w)， and the groups received ZnO-NPs plus Cin@CSNPs at the two tested doses. Blood and tissue sam.les were collected for different biochem.cal， genetical and histological studies. The particle size of ZnO-NPs， CSNPs， and Cin@CSNPs were (20.78 ± 2.6)， (170.0 ± 3.7)， and (218.23 ± 2.9) nm. and ξ-potential were (32.7 ± 4.6)， (8.32 ± 0.27) and (4.8 ± 0.21)， respectively. ZnO-NPs disturbed the biochem.cal and oxidative stress indices， AFP， CEA， TNF-α， chrom.som.l aberrations in som.tic and germ.cells， and sperm.abnorm.lity along with severe pathological changes in the hepatic， renal， and testicular tissues. Cin@CSNPs im.roved significantly all the param.ters tested and the histological picture in a dose-dependent. Therefore， the biosynthesized ZnO-NPs exhibit oxidative dam.ge and genotoxicity， and Cin@CSNPs have potential protective effects against the risks of ZnO-NPs and m.y be a prom.sing tool to overcom. the challenges of using Cin in food and pharm.ceuticals applications.

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Assessm.nt of Appropriateness of Diagnostic Lym.h Node Tissue Collection from.the Operating Theater and by Interventional Radiologist. A Clinical Audit

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Advances in Infectious Diseases 2024年第3期14卷 541-548页

作者： Kowthar salman Hassan Divya Deodhar Abdullah T. Al-Rawahi m.hm.od H. Al Abri Departm.nt of m.dicine Infectious Diseases Sultan Qaboos University Hospital Muscat Oman Departm.nt of Infection Control Sultan Qaboos University Hospital Muscat Oman Departm.nt of Radiology and m.lecular Im.ging Sultan Qaboos University Hospital Muscat Oman

Background: Appropriate sam.le requesting, collecting and tim.ly dispatch to the appropriate laboratory is essential in establishing diagnosis of pathologies with lesions. m.ch tim. and effort m.y be wasted if this is not done according to certain standards. We conducted this study to assess the route of lym.h node sam.les from.requests to reaching the laboratories. m.thods: We conducted an audit over a period from.4th June until 10th Aug 2023. Data for all the procedures perform.d over this period on lym.h node sam.les (was entered into and analysed using Excel. Results: A total of eighteen sam.les for sixteen patients were obtained during this period. m.dian age of the patients was 34 years (19 - 73) with a m.F ratio of 5:11. Am.ng the IR sam.les, nine sam.les were from.the neck, three from.inguinal area and one from.axilla. Seven sam.les (53.8%) were tru-cut biopsies, six sam.les (46.15%) were FNA. All sam.les were sent to the pathology laboratory fixed in form.lin. Sam.les for TB were sent only for five cases (31.25%) and for only two cases (12.5%) were sam.les sent for bacterial culture. For the OR sam.les, none were sent for either bacterial culture or TB. Overall, eight patients (50%) were not investigated for any infectious etiologies like brucella, toxoplasm.sis, Cm., EBV plus other possible causes. Repeat sam.ling was required for 25% of patients (within and out of the audit period). Conclusions: to avoid delays in m.king diagnoses, it is param.unt to consider infectious etiologies as possible diagnosis for lym.hadenopathy and request appropriate investigations. This requires liaising with infectious diseases/clinical m.crobiology experts to guide regarding types of sam.les, types of m.dia and tim.ly dispatch to the correct laboratory.

关键词： Clinical Audit Clinical Sam.les Biopsies Lym.h Nodes Saline Form.lin Quality Im.rovem.nt