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One-year rotational relapse frequency following conventional circumferential supracrestal fiberotomy

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World Journal of Clinical Cases 2020年第2期8卷 284-293页

作者： Reham al-Jasser Thikriat al-Jewair abdulaziz al-Rasheed Department of Periodontics and Community Dentistry College of DentistryKing Saud UniversityRiyadh 11545Saudi Arabia Graduate Program Director in Orthodontics School of Dental MedicineState University of New YorkBuffaloNY 14214United States

BACKGROUND Relapse following orthodontic treatment has been a common problem that can occur due to several factors. It was suggested that surgical circumferential supracrestal fiberotomy(CSF) is an effective measure to reduce this ***, very few studies have reported the amount of relapse that occurs *** To assess the frequency of rotational relapse on anterior teeth 1 year following *** Eleven adults(six male and five female) with a mean age of 23 years(standard deviation = 5.2), who had a total of 90 rotated anterior teeth, were included in this study. CSF was performed after comprehensive orthodontic treatment involving the use of full-fixed preadjusted edgewise appliances(Victory Series APC, 3 M,United States) with a 0.022-inch slot and Roth prescription brackets(Ovation;DENTSPLY GAC, Bohemia, New York, United States) and placement of a fixed lingual retainer from canine to canine in both arches using a 0.016 Australian wire(AJ Wilcock, Australia). Degrees of rotational correction and relapse were measured on three sets of casts [pretreatment, post-treatment(at the debond visit), and 1-year post-treatment]. Rotational relapse was categorized as follows:Unnoticeable relapse(0°), barely noticeable relapse(1°-3°), noticeable relapse(4°-9°), and clearly noticeable relapse(≥ 10°). The percent relapse that had occurred 1 year after teeth were aligned to their ideal position was calculated. Data were analyzed by dental arch type and tooth *** Mean rotational correction was 14.05° during posttreatment. Mean relapse at 1-year follow-up was 1.1°(10.8%). More than half(n = 52, 57.8%) of teeth were categorized as having unnoticeable relapse(0°). Of the remaining teeth, 31(34.5%) had barely noticeable relapse(1°-3°), 6(6.6%) had noticeable relapse(4°-9°), and only one(1.1%) had clearly noticeable relapse(> 10°). When analyzed by arch, 54.5%(n = 6) of the relapsed maxillary teeth had barely noticeable relapse(1°-3°). While most of the ma

关键词： Fiberotomy Surgery Orthodontics Adult Relapse Periodontics

Improvement of sexual behavior, sperm quantity and quality by Quercetin in streptozotocin-induced diabetic erectile dysfunction

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Asian pacific Journal of Reproduction 2017年第1期6卷 9-15页

作者： abdulaziz al-Roujayee Department of Dermatology and Venereology College of MedicineA1-Imam Mohammad Ibn Saud Islamic UniversityP.O.Box 11623RiyadhSaudi Arabia

Objective:To evaluate the effect of Quercetin (QT) on erectile dysfunction and oxidative stress in penile tissue of streptozotocin-induced diabetic ***: Two weeks after diabetes induction, QT was treated to normal and diabetic rats for 5 wk. Sexual behavioral parameters including mount latency, intromission latency, ejaculation latency, post-ejaculatory interval, mount frequency and intromission frequency, were observed against stimulus females. Sperm count and their motility and viability were recorded. Serum glucose and testosterone levels were estimated. In penile tissue levels of cyclic guanosine monophosphate, thiobarbituric acid reactive substances and glutathione, and enzymatic activities of superoxide dismutase and catalase were measured. Histopathological changes were evaluated in a cross-section of penile ***:Sexual behavioral ejaculation latency, post-ejaculatory interval, mount latency and intromission latency were significantly increased while mount frequency and intromission frequency were decreased in diabetic rats. Treatment with QT corrected the male sexual behavioral levels and also enhanced the inhibited sperm count, motility and viability in diabetic rats. Serum testosterone and penile cyclic guanosine monophosphate levels were significantly increased in QT treated diabetic rats compared to untreated diabetic animals. Penile oxidative stress biomarkers were corrected by the QT treatments in diabetic rats. Histopathological evaluation revealed damaged penile tissues in diabetic rats, which was protected following QT ***: QT eliminated the diabetic-induced sexual impairment and showed significant antioxidant effects in penile tissue. Further experimental studies are recommended for QT therapeutically usage.

关键词： Quercetin Streptozotocin Sexual dysfunction Spermatogenesis

Evolutionary relationship and species separation of four morphologically similar stichotrichous ciliates (Protozoa,Ciliophora)

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Progress in Natural Science:Materials International 2009年第5期19卷 581-586页

作者： John Clamp Khaled A.S.al-Rasheid abdulaziz A.al-Khedhairy Department of Biology North Carolina Central University Zoology Department King Saud University

Phylogenetic and taxonomic studies on ciliate protists using molecular approaches have been demonstrated to be very reliable to form strong conclusions and results. In the present work, species separation of some morphologically similar stichotrichous ciliates, two species of Pseudokeronopsis and two species of Apokeronopsis, was reexamined using amplified ribosomal DNA restriction analysis (PCR-RFLP). Five of 10 restriction enzymes revealed species-specific polymorphic patterns, of which four similar stichotrichs could be significantly separated and identified. Among them, EcoR I offered almost no significantly different restriction fragment patterns, but the four species could be separated from one another and identified with Hae Ⅲ. Distinctly different restriction digestion haplotypes and simi-larity indices separated the species, and were used to construct a phylogeny. Phylogenies based on ITS2 nucleotide sequences and ITS2 secondary structures supported the separation of Pseudokeronopsis and Apokeronopsis using RFLP analysis, although three Pseudoker-onopsis carnea populations did not cluster together. In addition, phylogenetic analyses using multiple algorithms confirmed that these two genera formed two distinct groups within the urostylids.

关键词： Ciliophora Pseudokeronopsis Apokeronopsis PCR-RFLP ITS2 secondary structures

Therapeutic benefits of zinc sulfate on neonatal hyperbilirubinemia

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World Journal of Pediatrics 2022年第4期18卷 300-304页

作者： Abdulrahman al-Matary Abdullah alGhamdi Bandar alenaze Rasha abdulaziz Mandili Dhuha abdulaziz alhawsawi Duha Magzoub Ahmed Abu-Zaid Department of Neonatology King Fahad Medical CityRiyadhSaudi Arabia Department of Pediatrics King Abdullah Specialized Children HospitalKing Abdulaziz Medical CityMinistry of National GuardHealth AffairsRiyadhSaudi Arabia King Abdullah International Research Medical Research Center RiyadhSaudi Arabia King Saud Bin abdulaziz University for Health Sciences RiyadhSaudi Arabia College of Medicine Umm Al-Qura UniversityMeccaSaudi Arabia School of Public Health University of MemphisMemphisTNUSA Department of Pharmacology College of Graduate Health SciencesUniversity of Tennessee Health Science CenterMemphisTN 38163USA College of Medicine Alfaisal UniversityRiyadhSaudi Arabia

Neonatal hyperbilirubinemia is a common phenomenon shortly after birth and a frequent cause of prolonged hospitalization[1].Increased enterohepatic circulation of indirect bilirubin is one of the elucidated mechanisms implicated in the pathophysiology of neonatal hyperbilirubinemia[2,3].According to various in vitro and in vivo evidence from animal[3]and human[2]trials,zinc salts have been depicted to reduce bilirubin levels.

关键词： neonatal hepatic Therapeutic

A comprehensive survey of cyberattacks on EVs: Research domains,attacks, defensive mechanisms, and verification methods

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Defence Technology（防务技术） 2024年第12期42卷 31-58页

作者： Tawfiq aljohani abdulaziz almutairi Department of Electrical Engineering College of Engineering at YanbuTaibah UniversityYanbu41911Saudi Arabia Department of Electrical Engineering College of EngineeringMajmaah UniversityAlmajmaah11952Saudi Arabia

With the continuous development of transportation electrification,the cybersecurity of energy infrastructure has become increasingly ***,EVs resemble a significant tool to carryout cyberattacks since EVs are not only seen as dynamic loads but also as mobile energy sources that establish two-way communications with several players in the *** taxonomy aims to provide a comprehensive overview of cyberattacks against EVs from four distinct *** first is the research domains of EVs application,which investigates the different fields of research related to the development and application of EVs and how they are susceptible to cyber *** second is the CIAbased attacks,which examines the threats to the confidentiality,integrity,and availability of EVs'sensitive information and critical *** third taxonomy discusses the countermeasures and defensive mechanisms to secure the EVs against cyberattacks,including preventive measures,detection algorithms,response strategy,and recovery *** fourth taxonomy is the verification and validation methodologies,which explores the software tools and hardware testbeds used to test and evaluate the security of EVs against cyber ***,this taxonomy presents an understanding of the current state of cyberattacks against EVs and serves as a valuable resource for researchers and practitioners in the fields of cybersecurity and electric mobility.

关键词： Cybersecurity Electric vehicles Charging stations Cybersecurity of energy systems Cyberattacks

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Static Analysis Techniques for Fixing Software Defects in MPI-Based Parallel Programs

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Computers, Materials & Continua 2024年第5期79卷 3139-3173页

作者： Norah Abdullah al-Johany Sanaa Abdullah Sharaf Fathy Elbouraey Eassa Reem abdulaziz alnanih Department of Computer Science Faculty of Computing and Information TechnologyKing Abdulaziz UniversityJeddah21589Saudi Arabia Software Engineering and Distributed System Research Group King Abdulaziz UniversityJeddah21589Saudi Arabia

The Message Passing Interface (MPI) is a widely accepted standard for parallel computing on distributed ***, MPI implementations can contain defects that impact the reliability and performance of parallelapplications. Detecting and correcting these defects is crucial, yet there is a lack of published models specificallydesigned for correctingMPI defects. To address this, we propose a model for detecting and correcting MPI defects(DC_MPI), which aims to detect and correct defects in various types of MPI communication, including blockingpoint-to-point (BPTP), nonblocking point-to-point (NBPTP), and collective communication (CC). The defectsaddressed by the DC_MPI model include illegal MPI calls, deadlocks (DL), race conditions (RC), and messagemismatches (MM). To assess the effectiveness of the DC_MPI model, we performed experiments on a datasetconsisting of 40 MPI codes. The results indicate that the model achieved a detection rate of 37 out of 40 codes,resulting in an overall detection accuracy of 92.5%. Additionally, the execution duration of the DC_MPI modelranged from 0.81 to 1.36 s. These findings show that the DC_MPI model is useful in detecting and correctingdefects in MPI implementations, thereby enhancing the reliability and performance of parallel applications. TheDC_MPImodel fills an important research gap and provides a valuable tool for improving the quality ofMPI-basedparallel computing systems.

关键词： High-performance computing parallel computing software engineering software defect message passing interface deadlock

Protocruzia,a highly ambiguous ciliate(Protozoa;Ciliophora):Very likely an ancestral form for Heterotrichea,Colpodea or Spirotrichea? With reevaluation of its evolutionary position based on multigene analyses

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Science China(Life Sciences) 2010年第1期53卷 131-138页

作者： Thorsten STOECK Shin Mann Kyoon al-Rasheid Khaled A. S. al-Khedhairy abdulaziz A. Department of Ecology University of Kaiserslautern Department of Biology University of Ulsan Zoology Department King Saud University

The ciliate genus Protocruzia belongs to one of the most ambiguous taxa considering its systematic position,possibly as a member of the classes Heterotrichea,Spirotrichea or Karyorelictea,which is tentatively placed into Spirotrichea in Lynn’s 2008 *** test these hypotheses,multigene trees(Bayesian inference,evolutionary distance,maximum parsimony,and maximum likelihood) were constructed using the small subunit rRNA(SSU rRNA) gene,internal transcribed spacer 2(ITS2) and a protein coding gene(histone H4).all analyses agree that:(1) four morphotypes of Protocruzia from different geographical origins group together and form a monophyletic clade,which cannot be assigned to any of the eleven described ciliate classes;(2) it is invariably positioned on an isolated branch separated from the class Spirotrichea suggesting that this clade should be clearly removed from Spirotrichea;(3) this leads us to hypothesize that this taxon may indeed represent a lineage on a class *** on the fact that it is,both morphologically and in molecular features,closely related to the heterotrichs,Colpodea and Oligohymenophorea,Protocruziida might be an ancestral form for the subphylum Intramacronucleata in the evolutionary line from the class Heterotrichea(subphylum Postciliodesmatophora) to higher taxa.

关键词： SSU rRNA gene internal transcribed spacer 2(ITS2) gene histone H4 gene phylogenetic position Protocruzia Protocruziidea new class

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COVID-19 Pandemic Data Predict the Stock Market

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Computer Systems Science & Engineering 2021年第3期36卷 451-460页

作者： abdulaziz almehmadi Faculty of Computing and Information Technology University of TabukTabukSaudi Arabia

Unlike the 2007–2008 market crash,which was caused by a banking failure and led to an economic recession,the 1918 inﬂuenza pandemic triggered a worldwideﬁnancial *** usually affect the global economy,and the COVID-19 pandemic is no *** stock markets have fallen over 40%,and companies are shutting down,ending contracts,and issuing volun-tary and involuntary leaves for thousands of *** economic effects have led to an increase in unemployment rates,crime,and *** pandemics’economic effects,especially on the stock market,has not been urgent or feasible until ***,with advances in artiﬁcial intelligence(AI)and the inter-connectivity that social media provides,such research has become *** this paper,we propose a COVID-19-based stock market prediction system(C19-SM2)that utilizes social *** AI system enables economists to study how COVID-19 pandemic data inﬂuence social media and,hence,the stock market.C19-SM2 gathers COVID-19 infection and death cases reported by the authorities and social media data from a geographic area and extracts the sentiments and events that occur in that *** information is then fed to the support vector machine(SVM)and random forest and random tree classiﬁers along with current stock market ***,the system produces a projection of the stock market’s movement during the next *** tested the system with the Dow Jones Industrial Average(DJI)and the Tadawul all Share Index(TASI).Our system achieved a stock market prediction accuracy of 99.71%,substantially higher than the 89.93%accuracy reported in the related literature;the inclusion of COVID-19 data improved accuracy by 9.78%.

关键词： COVID-19 economic impact artiﬁcial intelligence sentiment analysis stock market

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探索CD164:从疾病标志物到治疗新策略

现代肿瘤医学 2025年第1期 102-108页

作者：吴薇魏金枫徐辉 abdulaziz 孙逊陈天浩邱洪斌佳木斯大学公共卫生学院佳木斯大学基础医学院

近年来，有许多动物实验及临床研究表明CD164在多种疾病中表达异常，该文系统地综述了最新研究成果，发现CD164在不同疾病中均呈现出独特的表达模式，尤其在肿瘤、免疫系统疾病、人畜共患病及其他多种疾病中扮演着关键角色。深入分析这... 详细信息

近年来，有许多动物实验及临床研究表明CD164在多种疾病中表达异常，该文系统地综述了最新研究成果，发现CD164在不同疾病中均呈现出独特的表达模式，尤其在肿瘤、免疫系统疾病、人畜共患病及其他多种疾病中扮演着关键角色。深入分析这些研究发现，CD164不仅与各疾病的发生和发展密切相关，更可能成为未来疾病诊断与治疗的新靶点。进一步探讨CD164的功能和调控机制，将有望为疾病的早期诊断、精准治疗提供新的思路和方法，进而推动其在临床实践中的应用，为患者的健康带来更大的利益。

关键词： CD164 肿瘤免疫系统疾病人畜共患病新靶点

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