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Role of viruses in periodontitis:An extensive review of herpesviruses,human immunodeficiency virus,coronavirus-19,papillomavirus and hepatitis viruses

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World Journal of Virology 2024年第4期13卷 7-23页

作者： Mohammed khalid Mahmood Mohammed Taib Fatih Handren Ameer Kurda Nwsiba khalid Mahmood Farman Uthman Shareef Hemin Faraidun Herve Tassery Delphine Tardivo Romain Lan Zana Fuad Noori Balen Hamid Qadir Arman Dlshad Hassan Aix-Marseille University CNRSEFSADESMarseille 13000France College of Dentistry Komar University of Science and technologySulaimani 46001Iraq College of Dentistry Sulaimani UniversitySulaimani 46001Iraq Department of Biology College of ScienceSulaimani UniversitySulaimani 46001Iraq Department of Medical Laboratory Science College of ScienceCharmo UniversityChamchamal/Sulaimani 46001Iraq Department of Biology University of FreiburgMina BiotechFreiburg 79098Germany Department of Odontology Timone HospitalAix Marseille UniversityAPHMMarseille 13000FranceLBN LaboratoryMontpellier 34000France Department of Odontology Timone HospitalAix Marseille UniversityAPHMCNRSEFSADESMarseille 13000France Department of Dentistry American University of Sulaimani Iraq AUISSulaimani 46001Iraq Department of Biomedical Science University of DenverDenverCO 80014United States

Periodontitis is the inflammation of the supporting structures around the *** microbial agents,mostly bacteria,have been identified as causative factors for periodontal *** the other hand,oral cavity is a rich reservoir for viruses since it contains a wide variety of cell types that can be targeted by ***,the focus of research about the oral flora has been on bacteria because the most widespread oral diseases,like periodontitis and dental caries,are outcomes of bacterial ***,recently and especially after the emergence of coronavirus disease 2019,there is a growing tendency toward including viruses also into the scope of oral microbiome *** global high prevalence of periodontitis and viral infections may point out to a concomitant or synergistic effect between the *** the exact nature of the mechanism still is not clearly understood,this could be speculated through the manipulation of the immune system by viruses;hence facilitating the furthermore colonization of the oral tissues by *** review provides an extensive and detailed update on the role of the most common viruses including herpes family(herpes simplex,varicella-zoster,Epstein-Barr,cytomegalovirus),Human papillomaviruses,Human immunodeficiency virus and severe acute respiratory syndrome coronavirus 2 in the initiation,progression and prognosis of periodontitis.

关键词： Virus Periodontitis Bacteria Herpesvirus Herpes simplex virus Varicella-zoster virus Epstein-Barr virus Cytomegalovirus Human papillomaviruses SARS-CoV-2 Human immunodeficiency virus

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Dosage and utilization of dexamethasone in the management of COVID-19: A critical review

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World Journal of Virology 2024年第3期13卷 107-114页

作者： Imran Sethi Asim Shaikh Musa Sethi Hira khalid Chohan Sheraz Younus Syed A Khan Salim Surani Department of Critical Care Medicine Marion General HospitalMarionIN 46952United States Department of Medicine Aga Khan UniversityKarachi 74200SindhPakistan Department of Medicine Eman SchoolFishersIN 46038United States Department of Internal Medicine Dow University of Health ScienceKarachi 74200SindhPakistan Department of Hospital Medicine Franciscan HealthIndianapolisIN 46237United States Department of Critical Care Medicine Mayo Clinic Health SystemMankatoMN 56001United States Department of Medicine and Pharmacology Texas A and M UniversityCollege StationTX 77843United States

BACKGROUND The severe respiratory manifestations observed in severe coronavirus disease 2019(COVID-19)cases are often associated with an excessive inflammatory ***,a synthetic glucocorticoid,exerts its anti-inflammatory effects by inhibiting the transcription of pro-inflammatory genes and suppressing the activity of various immune *** mechanism has implications for mitigating the cytokine storm observed in severe COVID-19 *** on in the pandemic,the Recovery Collaborative working group showed a mortality benefit of using dexamethasone in decreasing mortality in patients with COVID-19 requiring respiratory ***,the optimal dosage of corticosteroids remains *** studies that compare different doses of dexamethasone in COVID-19 exist,but the results are *** To review the latest evidence regarding dosage,safety,and efficacy of dexamethasone in severe *** We followed preferred reporting items for systematic reviews and meta-analysis guidelines.A detailed literature search was conducted across PubMed,Google Scholar,and Medline to include publications up to March *** keywords included“COVID-19”“SARS-CoV-2”“dexamethasone”“corticosteroid”“steroid”and“glucocorticoid”-along with their *** employed the Cochrane Risk of Bias Tool and the Newcastle-Ottawa scale to evaluate the integrity and potential of bias in the included studies.A meta-analysis was conducted using a random-effects model,assessing pooled odds ratios and mean differences,with heterogeneity gauged by the I2 statistic and theχ^(2) *** No statistical differences were found in 28-day all-cause mortality[pooled odds ratio(OR)=1.109,95%CI:0.918-1.340],60-day all-cause mortality(OR=0.873,95%CI:0.744-1.024;I2=47.29%),mean length of hospital stay(mean difference=-0.08 days,95%CI:-0.001 to 0.161)and adverse events(OR=0.877,95%CI:0.707-1.087).CONCLUSION Differing doses of corticosteroids have no clinical implication

关键词： COVID-19 Steroids Corticosteroids Steroid dosage Critical care Corona virus

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NONLINEAR SEMIGROUP APPROACH TOTRANSPORT EQUATIONS WITH DELAYED NEUTRONS

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Acta Mathematica Scientia 2018年第6期38卷 1637-1654页

作者： abdul-ma jeed al-izeri khalid latrach Département de Mathématiques Universitd Clermont Auvergne CNRS LMBP F-63000 Clermont-Ferrand France

This paper deal with a nonlinear transport equation with delayed neutron andgeneral boundary conditions. We establish, via the nonlinear semigroups approach, the exis-tence and uniqueness of the mild solution, weak solution, strong solution and local solutionon LP-spaces （1 ≤ p 〈＋∞）. Local and non local evolution problems are discussed.

关键词： transport equation with delayed neutrons general boundary conditions quasi-accretive operators mild solution strong solution local and global solutions

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A genetic algorithm based lookup table approach for optimal stepping sequence of open-loop stepper motor systems

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控制理论与应用（英文版） 2013年第1期11卷 35-41页

作者： Suleiman BANIHANI khalid al-WIDYAN Ahmad al-JARRAH Mohammad ABABNEH Mechatronics Engineering Department The Hashemite University

Stepper motor driven systems are widely used in industrial applications. They are mainly used for their low cost open-loop high performance. However, as dynamic systems need to be increasingly faster and their motion more precise, it is important to have an open-loop system which is accurate and reliable. In this paper, we present a novel technique in which a genetic algorithm （GA） based lookup table approach is used to find the optimal stepping sequence of an open-loop stepper motor system. The optimal sequence objective is to minimize residual vibration and to accurately follow trajectory. A genetic algorithm is used to find the best stepping sequence which minimizes the error and improves the system performance. Numerical simulation has showed the effectiveness of our approach to improve the system performance for both position and velocity. The optimized system reduced the residual vibration and was able to follow the trajectory with minimal error.

关键词： Stepper motor Open-loop Genetic algorithm Optimal Stepping sequence Control

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The Impact of Simulation Education on Self-Efficacy in Pre-Registration Nursing Students

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Open Journal of Nursing 2024年第1期14卷 51-76页

作者： Ahmed A. Hakami Aisha Hussin Rabie Sultan Ghormallah M. alzahrani Faisal Mohammed alnakhilan khalid Awaidhalharbi College of Nursing Umm Al-Qura University Makkah Saudi Arabia al-Noor Specialist Hospital Makkah Saudi Arabia (MOH) Ministry of Health King Fahad Hospital Al Baha Saudi Arabia (MOH) Ministry of Health Eradah Complex Riyadh Saudi Arabia King Salman Medical City Al Madinah Saudi Arabia

This literature review primarily aims to explore and synthesise the previous studies in simulation education research conducted over the past five years related to the effects of simulation training on the self-efficacy of undergraduate pre-registration nursing students. The second aim of this study is to explore additional outcome variables that were examined in the previous studies. Five electronic databases were searched systematically. These databases were MEDLINE, CINAHL Plus, Scopus, Embase and PsycINFO. The PICO model was employed to identify the search terms, with a thesaurus being used to provide synonyms. Reference lists of relevant articles were examined and hand searches of journals were also undertaken. The quality of each study was assessed using the Simulation Research Rubric (SRR). A total of 11 studies were included. all studies explored the impact of simulation education on undergraduate pre-registration nursing. Six studies explored nursing students’ competence and performance and two papers examined their critical thinking. Problem solving, learning motivation, communication skills and knowledge acquisition were examined once. The majority of studies indicated that simulation training has a positive impact on pre-registration nursing students’ self-efficacy and other outcome variables. Furthermore, the study results indicate that simulation training is more dependable than traditional training, and students were extremely satisfied with the simulation training. However, most of the studies included in this review had several gaps, including study design, sample size and dissimilarities between the scales used. Further research with large samples, reliable and valid instruments, and outcomes measures (such as critical thinking and transferability of skills) is required to provide better insight into the effectiveness of simulation in undergraduate nursing education. .

关键词： Simulation Education Self-Efficacy Pre-Registration Nursing Students Clinical Skills Undergraduate Nursing Education Teaching Techniques Decision-Making

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Performance Evaluation ofMulti-Agent Reinforcement Learning algorithms

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Intelligent Automation & Soft Computing 2024年第2期39卷 337-352页

作者： Abdulghani M.Abdulghani Mokhles M.Abdulghani Wilbur L.Walters khalid H.Abed Department of Electrical&Computer Engineering and Computer Science Jackson State UniversityJacksonMS 39217USA

Multi-Agent Reinforcement Learning(MARL)has proven to be successful in cooperative *** is used to investigate how autonomous agents with the same interests can connect and act in one *** cooperation scenarios are explored in recreational cooperative augmented reality environments,as well as realworld scenarios in *** this paper,we explore the realm of MARL and its potential applications in cooperative *** focus is on developing a multi-agent system that can collaborate to attack or defend against enemies and achieve victory withminimal *** accomplish this,we utilize the StarCraftMulti-Agent Challenge(SMAC)environment and train four MARL algorithms:Q-learning with Mixtures of Experts(QMIX),Value-DecompositionNetwork(VDN),Multi-agent Proximal PolicyOptimizer(MAPPO),andMulti-Agent Actor Attention Critic(MAA2C).These algorithms allow multiple agents to cooperate in a specific scenario to achieve the targeted *** results show that the QMIX algorithm outperforms the other three algorithms in the attacking scenario,while the VDN algorithm achieves the best results in the defending ***,the VDNalgorithmreaches the highest value of battle wonmean and the lowest value of dead *** research demonstrates the potential forMARL algorithms to be used in real-world applications,such as controllingmultiple robots to provide helpful services or coordinating teams of agents to accomplish tasks that would be impossible for a human to *** SMAC environment provides a unique opportunity to test and evaluate MARL algorithms in a challenging and dynamic environment,and our results show that these algorithms can be used to achieve victory with minimal damage.

关键词： Reinforcement learning RL multi-agent MARL SMAC VDN QMIX MAPPO

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A Hybrid Heuristic algorithm for Solving COVID-19’s Social Distancing at Universities Campus

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Computer Systems Science & Engineering 2022年第6期41卷 933-944页

作者： Hassan al-Tarawneh khalid al-Kaabneh Aysh alhroob Hazem Migdady Issam alhadid Department of Data sciences and Artificial Intelligence Al-Ahlyyia Amman UniversityAmmanJordan Department of Software Engineering Isra UniversityAmmanJordan Department of CSMIS Oman college of management and technologyMuscatOman Faculty of Information Technology and Systems University of JordanAqabaJordan

Social distancing during COVID-19 has become one of the most important measures in reducing the risks of the spread of the virus. Implementing thesemeasures at universities is crucial and directly related to the physical attendance ofthe populations of students, professors, employees, and other members on campus. This research proposes an automated scheduling approach that can help universities and schools comply with the social distancing regulations by providingassistance in avoiding huge assemblages of people. Furthermore, this paper proposes a novel course timetable-scheduling scheme based on four main ***, a distance of two meters must be maintained between each student inside theclassroom. Second, no classrooms should contain more than 20% of their regularcapacity. Third, there would be no back-to-back classes. Lastly, no lectures shouldbe held simultaneously in adjacent classrooms. The proposed approach wasimplemented using a variable neighborhood search (VNS) approach with an adaptive neighborhood structure (AD-NS) to resolve the problem of scheduling coursetimetables at al-Ahlyyia Amman University. However, the experimental resultsshow that the proposed techniques outperformed the standard VNS tested on university course timetabling benchmark dataset ITC2007-Track3. Meanwhile, theapproach was tested using datasets collected from the faculty of information technology at al-Ahlyyia Amman University (Jordan). Where the results showed that,the proposed technique could help educational institutes to resume their regularoperations while complying with the social distancing guidelines.

关键词： COVID-19 social distance variable neighborhood search adaptive neighborhood structure university course timetable

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Extraction of cobalt(Ⅱ) from aqueous solution by N,N'-carbonyl difatty amides

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Chinese Chemical Letters 2011年第4期22卷 469-472页

作者： Emad A.Jaffar al-Mulla khalid Waleed S.al-Janabi Department of Chemistry College of ScienceUniversity of KufaAnNajafIraq Department of Chemistry College of EducationBaghdad UniversityBaghdadIraq

The development of economic and environmentally friendly extractants to recover cobalt metal is required due to the increasing demand for this *** this study,solvent extraction of Co（Ⅱ） from aqueous solution using a mixture of N,N＇-carbonyl difatty amides（CDFAs） synthesised from palm oil as the extractant was carried *** effects of various parameters such as acid,contact time,extractant concentration,metal ion concentration and stripping agent and the separation of Co（Ⅱ） from other metal ions such as Fe（Ⅱ）,Ni（Ⅱ）,Zn（Ⅲ） and Cd（Ⅱ） were *** was found that the extraction of Co（Ⅱ） into the organic phase involved the formation of 1：1 ***（Ⅱ） was successfully separated from commonly associated metal ions such as Fe（Ⅱ）,Ni（Ⅱ）,Zn（Ⅲ） and Cd（Ⅱ）.Co（Ⅱ） stripping from the loaded organic phase was studied in aqueous *** results are useful to recover Co（Ⅱ） from aqueous solution utilising（CDFAs） as an extractant.

关键词： N N'-Carbonyl difatty amides Solvent extraction Co(Ⅱ)

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Influence of Y^(3+),Yb^(3+),Gd^(3+) cations on structural and electromagnetic properties of CuFe_(2)O_(4) nanoferrites prepared via one step sol-gel method

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Journal of Rare Earths 2021年第10期39卷 1224-1231,I0003页

作者： aleena Kiran Majid Niaz Akhtar Muhammad Yousaf khalid Mujassam Batoo omar Maldossary Salman Naeem Khan Department of Physics COMSATS University IslamabadLahore CampusDefence Road Off RaiwindLahore54000Pakistan Department of Physics Mohammad Nawaz Sharif University of Engineering and TechnologyMultan60000Pakistan School of Energy and Environment Southeast UniversityNo2 Si Pai LouNanjing 210096China King Abdullah Institute for Nanotechnology King Saud UniversityP.O.Box 2455Riyadh11458Saudi Arabia Department of Physics and Astronomy College of ScienceKing Saud UniversityP.O.Box-2455Riyadh11451Saudi Arabia Micro-mm Wave Laboratory(M2L) Department of PhysicsCOMSATS University IslamabadLahore CampusDefence Road Off RaiwindLahore54000Pakistan

Rare earths(REs) play a key role in distorting spinel structure by creating some defects at the lattice sites and make them suitable for magnetodielectric *** the present study,the nanoferrites of CuRE0.02Fe1.98O4,where REs=Y^(3+),Yb^(3+),Gd^(3+),were prepared using one step sol-gel *** prepared samples are copper ferrite(CFO),yttrium doped copper ferrite(Y-CFO),ytterbium doped copper ferrite(Yb-CFO) and gadolinium doped copper ferrite(Gd-CFO),*** single-phase structure of all the REs doped nanoferrites was determined by X-ray diffraction(XRD) *** porosity,agglomerations and grain size of the REs doped copper ferrite were examined using field emission scanning electron microscopy(FESEM) *** transform infrared spectroscopy(FTIR)elaborates the phase formation and environmental effects on the REs doped nanoparticles(NPs).The recorded room temperature M-H loops from a vibrating sample magnetometer(VSM) elucidate the magnetic properties of the REs doped spinel *** magnetic saturation(Ms) was calculated in the range of 23.08 to 51.78 emu/*** calculated coercivity values(272.6 to 705.60 Oe) confirm the soft magnetic behavior of REs doped copper ***,the electromagnetic and dielectric properties were assessed using a Vector network analyzer(VNA) from 1 to 6 *** permeability,permittivity,dielectric tangent loss and electric modulus of the REs doped spinel ferrites illustrate that the prepared NPs may be suitable for microwave and high frequency applications.

关键词： Rare earth elements Nanoparticles Spinel ferrites VSM VNA Magnetodielectric applications

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Extra-Axial Anaplastic Pleomorphic Xanthoastrocytoma Mimicking Meningioma: A Case Report with Literature Review

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Open Journal of Modern Neurosurgery 2024年第3期14卷 203-211页

作者： Kaoutar Stitou Ilias Zahir Oualid Mohammed Hmamouche Marouane Hammoud Faycal Lakhdar Mohammed Benzagmout khalid Chakour Mohammed El Faiz Chaoui Department of Neurosurgery University Hospital of Fez Fez Morocco

Background: A number of meningeal neoplastic lesions may radiologically and clinically simulate meningioma, include hemangiopericytomas, solitary fibrous tumors, schwannomas, hematolymphoid lesions, metastases, and others very rarely, also may clinically mimic meningiomas. Case Description: We present the case of A 28-year-old male patient, with no notable medical history, who presented with worsening headaches for 3 months, imbalance, and visual deficits, An initial MRI revealed extra-axial lesion involving the right Parieto-occipital, The tumor was hypointense on T1-weighted MR images, hyperintense signals on T2-weightedMR images, and heterogeneously enhanced suggestive of a meningioma, total resection was achieved, and the histopathological analysis confirmed the diagnosis of an angioblastic meningioma. However, 15 months later, the patient presented with the same initial visual complaints. A subsequent MRI showed lesion recurrence, leading to a second surgical intervention. The histopathological analysis confirmed the diagnosis of an anaplastic xanthoastrocytoma. Conclusion: This represents an unusual location for an anaplastic pleomorphic xanthoastrocytoma, which should broaden the differential diagnosis of extra-axial lesions.

关键词： Anaplastic Features BRAF Extra-Axial High Mitotic Rate High Proliferation Index Meningeal Pleomorphic Xanthoastrocytoma

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