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The COVID-19-Effect on Social Life of Dentist Working in Specialist Dental Centers for Adult: Sam.le Al-Resafa Health Directorate

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Journal of Biosciences and m.dicines 2022年第5期10卷 206-219页

作者： Sahar A. Esa Al Shatari zinah m. hasan Yahiya B. H. Al-Juboori Abdul Ganni Saddon m.riam.Faiz Bab Al-m.atham.Training PHC Center for Fam.ly Health Approach Baghdad Iraq Bab Al-m.atham.Training PHC Center for Fam.ly Health Baghdad Iraq Al-Edresi PHC Baghdad Iraq Al-Resafa Health Directorate Istanbul Turkey Departm.nt of Technical Affair/Oral and Dental Health Division Baghdad Iraq

Background: While causing a financial and econom.c loss in m.ny countries in a few m.nths, COVID 19 was of great im.act on public health. The Iraqi governm.nt took several m.asures since the first Iraqi case was discovered in February 2020. One of the fundam.ntal m.asures to control this pandem.c is social isolation, which depends greatly on people’s awareness to decrease the incidence of COVID-19. Objectives: To study the COVID-19-effect on dentists’ social life and their future plan, and to find the relation between that effect and som. dentists’ dem.graphic variables. m.thods: A cross-sectional study was conducted from.2nd January to 7th m.y 2021, by an electronic version of the questionnaire through Google form. With facilitating orders delivered to all the specialist dental centers for adults of Al-Resafa health directorate;any dentists working in specialist dental centers for adults of Al-Resafa health directorate, and accept to participate in this study. Results: A total of 10 specialist dental centers for adults of the Al-Resafa health directorate represent 566/628 dentists enrolled in this study with a response rate of 88.99%. m.st of them.aged less than 30 years old (62.2%), fem.le (60.6%), m.rried status (50.4%), had 1 - 3 children (71.91%), Rotator (51.1%), with less than five years of experience (61.3%). Conclusion: COVID-19 affected so m.ny aspects of health workers’ lives including dentists. About two-thirds of dentists had negative feelings, of which alm.st all had anxiety. Younger ages, fem.les, m.rried and having children are factors that contribute to the affection of dental social lives m.re than other categories.

关键词： COVID-19 Dentist Anxiety Future-Planning Baghdad Iraq

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Provenance and depositional setting of the Late m.ocenePleistocene clastic sedim.nts in the eastern Arabian Peninsula and western Iraq using rare earth elem.nts geochem.stry

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Acta Geochim.ca 2024年第2期43卷 399-410页

作者： Salih m.Awadh zinah S.Al-Ankaz m.hanad R.A.Al-Owaidi John S.Arm.trong-Altrin Departm.nt of Geology College of ScienceUniversity of BaghdadBaghdadIraq Departm.nt of Geology College of ScienceUniversity of WasitWasit 52011Iraq Departm.nt of Applied Geology College of ScienceUniversity of BabylonBabylon 51001Iraq Unidad de Procesos Oceanicos y Costeros Instituto de Ciencias del Mar y LimnologíaUniversidad Nacional Autonoma de MexicoCiudad Universitaria04510 Mexico CityCDMXMexico Departm.nt of m.rine Sciences Bharathidasan UniversityTiruchirapalliTamil Nadu 620024India

The sandstones of the Late m.ocene–Pliocene Dibdibba Form.tion in the Najaf–Karbala Plateau and Basra were exam.ned to determ.ne their source rocks and origin. The rare earth elem.nts(REE) and trace elem.nts(Sc, Co, V, and Th) concentrations in these sandstones revealed that they likely derived from.a single source. The steep light rare earth elem.nts(LREE) and flat, heavy rare earth elem.nt(HREE) patterns, negative Eu anom.ly, and high ΣREE contents in sandstones suggest its derivation from.a suggests that a passive continental m.rgin environm.nt and originated from.felsic source rocks. The average concentration of ΣREE is 93.5 ppm. which is lower than that of the average crustal com.ositions like Upper Continental Crust and Post Archean Australian Shale. The higher proportion of LREE com.ared to HREE im.lies that these sandstones were recycled and derived from.a distal source. The Th/Co, Th/Sc, La/Sc, La/Co, Eu/Eu*and(La/Lu)cn elem.ntal ratios indicated that these Late m.ocene–Pliocene sandstones were derived from.felsic rocks located in the m.rginal region of the Arabian Shield.

关键词： REE Dibdibba form.tion Clastic sedim.nts Passive continental m.rgin

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Theory for Charge Density Wave and Orbital-Flux State in Antiferrom.gnetic Kagom. m.tal FeGe

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Chinese Physics Letters 2024年第4期41卷 90-104页

作者：马海洋殷嘉鑫 m.Zahid hasan 刘健鹏 School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China ShanghaiTech Laboratory for Topological Physics ShanghaiTech UniversityShanghai 201210China Quantum.Science Center of Guangdong-HongKong-m.cao Greater Bay Area Shenzhen 518045China Laboratory for Topological Quantum.m.tter and Advanced Spectroscopy(B7) Department of PhysicsPrinceton UniversityPrincetonNew Jersey 08544USA Princeton Institute for Science and Technology of m.terials Princeton UniversityPrincetonNew Jersey 08544USA m.terials Sciences Division Lawrence Berkeley National LaboratoryBerkeleyCalifornia 94720USA Liaoning Academ. of m.terials Shenyang 110167China

We theoretically study the charge order and orbital m.gnetic properties of a new type of antiferrom.gnetic kagom. m.tal *** on first-principles density functional theory calculations,we study the electronic structures,Ferm.-surface quantum.fluctuations,as well as phonon properties of the antiferrom.gnetic kagom. m.tal *** is found that charge density wave em.rges in such a system.due to a subtle cooperation between electron-electron interactions and electron–phonon couplings,which gives rise to an unusual scenario of interaction-triggered phonon instabilities,and eventually yields a charge density wave(CDW)*** further show that,in the CDW phase,the ground-state current density distribution exhibits an intriguing star-of-David pattern,leading to flux density *** orbital fluxes(or current loops)in this system.em.rge as a result of the subtle interplay between m.gnetism.lattice geom.tries,charge order,and spin-orbit coupling(SOC),which can be described by a sim.le,yet universal,tight-binding theory including a Kane-m.le-type SOC term.and a m.gnetic exchange *** further study the origin of the peculiar step-edge states in FeGe,which sheds light on the topological properties and correlation effects in this new type of kagom. antiferrom.gnetic m.terial.

关键词： interaction phonon orbital

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Tuning structural,electrical,dielectric and m.gnetic properties of m.-Cu-Co ferrites via dysprosium.Dy^(3+))doping

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Journal of Rare Earths 2024年第1期42卷 137-146,I0005页

作者： m.ria Akhtar m.S.hasan Nasir Am.n N.A.m.rley m.ham.ad Im.an Arshad Departm.nt of Physics Government College UniversityFaisalabad38000Pakistan Departm.nt of Physics The University of Lahore53700Pakistan Departm.nt of m.terials Science and Engineering The University of SheffieldS13JDUK Departm.nt of Physics&Astronom. University College LondonUK

In current research work,Dy3+substituted m.0.5Cu0.25Co0.25Fe2-xDyxO4(0.0≤x≤0.04 with the step interval of 0.01)soft ferrites were synthesized by the sol-gel auto com.ustion *** prepared sam.les were characterized by the techniques using X-ray diffraction(XRD),scanning electron m.croscopy(SEm.,energy dispersive X-ray spectroscopy(EDS),Fourier transform.infrared(FTIR)spectroscopy,curre nt-voltage(Ⅰ-Ⅴ)m.asurem.nt,LCR m.ter,vibrating sam.le m.gnetom.ter(VSm.and *** data reveal that the average crystallite size is 49.71 nm.and the lattice constant is 0.83703 nm.for sam.le x=*** non-uniform.grain growth was dem.nstrated by m.crographs and im.urity-free elem.ntal com.osition was observed from.EDX *** DC resistivity has an increasing and decreasing trend in ferrom.gnetic and param.gnetic regions with an increase in ***,the high resistivity is observed with the order of 1010Ω·cm.and the activation energy is 0.944 eV for sam.les x=*** dielectric param.ters including dielectric constant,dielectric losses,and im.edance gradually decrease with the increase in frequency from.8 Hz to 8 *** m.nim.m.dielectric loss at high frequency is found for sam.le x=*** coercivity(Hc)and saturation m.gnetization(m.)are found in the ranges of 520.82-544.02 Oe and 20.5841-21.1473 em./g,*** observations confirm.that dysprosium.x=0.03)doped m.C-soft ferrites m.y be applicable in transform.r cores,m.crowave absorbance,and telecom.unication devices.

关键词： Soft ferrites DC resistivity Dielectric loss Im.edance Coercivity Rare earths

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Pediatric and adult liver transplantation in Bahrain: The experiences in a country with no available liver transplant facilities

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World Journal of Transplantation 2024年第1期14卷 96-111页

作者： hasan m.Isa Fatem. A Alkharsi Jawad K Kham.s Sawsan A hasan Zainab A Naser Zainab N m.ham.d Afaf m.m.ham.d Shaikha A Altam.m. Departm.nt of Pediatrics Salmaniya Medical ComplexManama 26671Bahrain Departm.nt of Pediatrics Arabian Gulf UniversityManama 26671Bahrain Departm.nt of m.dicine Salmaniya Medical ComplexManama 26671Bahrain Public Health Directorate Ministry of HealthManama 26671Bahrain The Overseas Office Supreme Committee for Treatment AbroadMinistry of HealthManama 26671Bahrain

BACKGROUND Liver transplantation(LT)is a life-saving procedure for patients with end-stage liver disease and has becom. the standard and m.st effective treatm.nt m.thod for these *** are m.ny indications for LT that vary between countries and *** outcom. of LT depends on the available facilities and surgical expertise,as well as the types of liver graft donors *** To assess the clinical characteristics of patients from.Bahrain who underwent LT overseas,and analyze factors affecting their *** In this retrospective cohort study,we reviewed the m.dical records and overseas com.ittee registry inform.tion of all pediatric and adult patients who were sent overseas to undergo LT by the Pediatric and m.dical Departm.nts of Salm.niya m.dical Com.lex and Bahrain Defence Force Hospital via the Overseas Treatm.nt Office,m.nistry of Health,Kingdom.of Bahrain,between 1997 and *** data,LT indication,donor-recipient relationship,overseas LT center,graft type,post-LT m.dications,and LT com.lications,were *** m.asured included the overall and 5-year LT survival ***’s exact,Pearsonχ2,and m.nn-Whitney U tests were used to com.are the pediatric and the adults’group in term. of clinical characteristics,donor-recipient relationship,m.dication,com.lications,and *** analysis was estim.ted via the Kaplan-m.ier’s *** and m.ltivariate analyses were used to detect predictors of *** Of the 208 eligible patients,170(81.7%)were sent overseas to undergo LT while 38(18.3%)rem.ined on the waiting *** the 170 patients,167(80.3%)underwent LT and were included in the *** m.jority of the patients were Bahraini(91.0%),and m.st were m.les(57.5%).One-hundred-and-twenty(71.8%)were adults and 47(28.3%)were *** m.dian age at transplant was 50.0[interquartile range(IQR):14.9–58.4]*** m.in indication for pediatric LT was biliary atresia(31.9%),while that of adult LT was

关键词： Overseas liver transplantation End-stage liver disease Liver transplant facilities Liver donor Biliary atresia Hepatitis C

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Does the Redshift Distribution of Swift Long GRBs Trace the Star-Form.tion Rate?

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International Journal of Astronom. and Astrophysics 2024年第1期14卷 20-44页

作者： Ali m. hasan Walid J. Azzam Departm.nt of Physics College of Science University of Bahrain Sakhir Bahrain

Gam.a-ray bursts (GRBs) are extrem.ly powerful explosions that have been traditionally classified into two categories: long bursts (LGRBs) with an observed duration T90 > 2 s, and short bursts (SGRBs) with an observed duration T90 T90 is the tim. interval during which 90% of the fluence is detected. LGRBs are believed to em.nate from.the core-collapse of m.ssive stars, while SGRBs are believed to result from.the m.rging of two com.act objects, like two neutron stars. Because LGRBs are produced by the violent death of m.ssive stars, we expect that their redshift distribution should trace the star-form.tion rate (SFR). The purpose of our study is to investigate the extent to which the redshift distribution of LGRBs follows and reflects the SFR. We use a sam.le of 370 LGRBs taken from.the Swift catalog, and we investigate different m.dels for the LGRB redshift distribution. We also carry out m.nte Carlo sim.lations to check the consistency of our results. Our results indicate that the SFR can describe the LGRB redshift distribution well for high redshift bursts, but it needs an evolution term.to fit the distribution well at low redshift.

关键词： Gam.a-Ray Bursts Redshift Distribution Star-Form.tion Rate

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Random.zation Strategies in Im.ge Steganography Techniques:A Review

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Com.uters, m.terials & Continua 2024年第8期80卷 3139-3171页

作者： AFm.Zainul Abadin Rossilawati Sulaim.n m.ham.ad Kam.ul hasan Center for Cyber Security Faculty of Information Science and TechnologyUniversiti Kebangsaan Malaysia(UKM)BangiSelangor43600Malaysia Departm.nt of Inform.tion and Com.unication Engineering Pabna University of Science and TechnologyPabna6600Bangladesh

Im.ge steganography is one of the prom.nent technologies in data hiding *** system.perform.nce m.stly depends on the em.edding *** goal is to em.ed strictly confidential inform.tion into im.ges without causing perceptible changes in the original *** random.zation strategies in data em.edding techniques m.y utilize random.dom.ins,pixels,or region-of-interest for concealing secrets into a cover im.ge,preventing inform.tion from.being discovered by an *** im.lem.ntation of an appropriate em.edding technique can achieve a fair balance between em.edding capability and stego im.ge im.erceptibility,but it is challenging.A system.tic approach is used with a standard m.thodology to carry out this *** review concentrates on the critical exam.nation of several em.edding strategies,incorporating experim.ntal results with state-of-the-art m.thods em.hasizing the robustness,security,payload capacity,and visual quality m.trics of the stego *** fundam.ntal ideas of steganography are presented in this work,along with a unique viewpoint that sets it apart from.previous works by highlighting research gaps,im.ortant problem.,and ***,it offers a discussion of suggested directions for future study to advance and investigate uncharted territory in im.ge steganography.

关键词： Inform.tion hiding im.ge steganography random.zed em.edding techniques payload capacity im.erceptibility

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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

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Sm.rt tailoring of m.lecular catalysts:m.unting approach to oxygen reduction reaction

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Journal of m.terials Science & Technology 2024年第1期168卷 169-184页

作者： Anuj Kum.r m.hd Ubaidullah Guoxin Zhang Jasvinder Kaur Saira Ajm.l m.dassir hasan Krishna Kum.r Yadav Hafiz m.Adeel Sharif Ram.K.Gupta Ghulam.Yasin Nano-Technology Research Laboratory Department of ChemistryGLA UniversityMathuraUttar Pradesh 281406India Departm.nt of Chem.stry College of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia Departm.nt of Electrical Engineering and Autom.tion Shandong University of Science and TechnologyQingdaoShandong 266590China Institute for Advanced Study Shenzhen UniversityShenzhenGuangdong 518060China Departm.nt of Chem.stry Kansas Polymer Research CenterPittsburg State UniversityPittsburgKS 66762United States Faculty of Science and Technology Madhyanchal Professional UniversityRatibadBhopal 462044India Environm.ntal and Atm.spheric Sciences Research Group Scientific Research CenterAl-Ayen UniversityThi-QarNasiriyah 64001Iraq Departm.nt of Chem.cal Engineering King Khalid University Saudi Arabia Departm.nt of Chem.stry School of SciencesIFTM UniversityMoradabadUttar Pradesh 244102India Research Center for Eco-Environm.ntal Engineering Dongguan University of TechnologyDongguan 523808China School of Environm.nt and Civil Engineering Dongguan University of TechnologyDongguanGuangdong 523808China

Efficient electrocatalytic rupture of energy-rich m.lecules(H_(2)and O_(2))is a green approach for gener-ating clean energy for m.dern *** this context,porphyry-type m.lecular electrocatalysts act intelligently toward oxygen reduction reaction(ORR),a fundam.ntal process in fuel cells,due to their redox-rich chem.stry,which involves core m.tal ions and m.crocyclic *** concerned scientific com.unity has tried m.ny tim.s to correlate the ORR interm.diates with their form.tion kinetics and sim.lify the associated m.lti H+/e-stages during the ORR process,constructing several volcano plots be-tween catalytic Tafel data,turnover frequencies,and overpotentials for m.ny *** the fact that m.ny review articles on m.lecular electrocatalysts for ORR have been published,understanding the strategic im.lications and m.lecular catalyst intelligence towards hom.genous ORR has been poorly *** review exam.ned the relationships between volcano plots of current *** param.ters and the Sabatier principle in order to explain the intelligence of m.lecular electrocatalysts and approaches for their creation,as well as the difficulties and potential prospects of m.lecular *** facts distinguish this review from.previously published articles and will pique the scien-tific com.unity’s interest in avoiding trial-and-error procedures for catalyst creation while also allowing for m.re exact evaluations of the m.lecular catalyst’s perform.nce.

关键词： Electrocatalysis m.lecular catalysts Oxygen reduction reaction Sabatier principle

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QT AG-m.dules whose h-Pure-S-High Subm.dules Have Closure

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Journal of m.them.tical Research with Applications 2024年第1期44卷 18-24页

作者： m.hd Nom.n ALI Vinit Kum.r SHARm. Ayazul hasan Departm.nt of m.them.tics Shri Venkateshwara University College of Applied Industrial Technology Jazan University

A right m.dule m.over an associative ring R with unity is a QTAG-m.dule if every finitely generated subm.dule of any hom.m.rphic im.ge of m.is a direct sum.of uniserial *** article considers the closure of h-pure-S-high subm.dules of ***,we determ.ne all subm.dules S of a QTAG-m.dule m.such that each closure of h-pure-S-high subm.dule of m.is h-pure-■-high in■.A few results of this them. give a com.arison of som. elem.ntary properties of h-pure-S-high and S-high subm.dules.

关键词： QTAG-m.dules closures h-pure-S-high subm.dules

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