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APPROXIMATION OF COMMON FIXeD POINT OF FAMILIeS OF NONLINeAR MAPPINGS WITH APPLICATIONS

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Acta Mathematica Scientia 2015年第5期35卷 1225-1240页

作者： eric u.OFOeDu Charles e.ONYI Department of Mathematics Nnamdi Azikiwe University

It is our purpose in this paper to show that some results obtained in uniformly convex real Banach space with uniformly Gateaux differentiable norm are extendable to more general reflexive and strictly convex real Banach space with uniformly G＆teaux differentiable norm. Demicompactness condition imposed in such results is dispensed with. Furthermore, Applications of our theorems to approximation of common fixed point of countable infinite family of continuous pseudocontractive mappings and approximation of common solution of countable infinite family of generalized mixed equilibrium problems are also discussed. Our theorems improve, generalize, unify and extend several recently announced results.

关键词： nonexpansive mappings, reflexive real Banach spaces fixed point uniformly Aateaux differentiable norm

Formation of Co-implanted Silicon ultra-Shallow Junctions for Low Thermal Budget Applications

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Chinese Physics Letters 2013年第1期30卷 127-129页

作者： Rehana Mustafa S.Ahmed e.u.Khan Department of Physics International Islamic UniversityIslamabadPakistan Advanced electronics Laboratory Faculty of Engineering&TechnologyInternational Islamic University IslamabadPakistan Center for emerging Sciences Engineering and TechnologyIslamabadPakistan Department of Physics Gomal UniversityD.I.KhanPakistan

We present a systematic study to create ultra-shallow junctions in n-type silicon substrates and investigate both pre-and post-annealing processes to create a processing strategy for potential applications in *** wafers were co-implanted with indium and C atoms at energies of 70 keV and 10 keV,respectively.A carefully chosen implantation schedule provides an abrupt ultra-shallow junction between 17 and 43 nm with suppressed sheet resistance and appropriate retained sheet carrier concentration at low thermal budget.A defect doping matrix,primarily the behavior and movement of co-implant generated interstitials at different annealing temperatures,may be engineered to form sufficiently activated ultra-shallow devices.

关键词： shallow annealing implantation

The COVID-19 Pandemic: Present or Gone, Where Do Adolescents Stand?

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Advances in Infectious Diseases 2024年第2期14卷 374-386页

作者： Ifueko enadeghe Ayebo Sadoh emmanuel u. eyo-Ita Phillip O. Abiodun Department of Child Health University of Benin Teaching Hospital Benin City Nigeria Institute of Child Health University of Benin Benin City Nigeria

Introduction: The initial global response to the SARS-CoV-2 pandemic focused on adults as adolescents mainly had subclinical infections. Adolescents, however, could transmit the virus and hence be a risk to the elderly, young children and immunocompromised. Adolescents are also at risk of long-term complications. This study sought to determine the prevalence of antibodies to SARS-CoV-2 among adolescents in Southern Nigeria, and to determine the association between SARS-CoV-2 seropositivity and age, gender, socioeconomic class, school type and nutritional status. Methods: This descriptive cross-sectional study was carried out in edo state of southern Nigeria. We recruited 270 in-school adolescents aged 10 - 19 years. A WHO-adapted, pre-tested questionnaire was used to obtain data on participant history and risk factors. The questionnaire was interviewer-administered. Adolescents whose parents gave consent were recruited through a multi-stage randomized sampling method. Capillary blood for the assay was collected and analysed using a lateral-flow immunoassay device. The primary outcome was serostatus of the study. The positive predictors of serostatus were finally determined using a multiple logistics regression model. Statistical significance was set at p Results: The seroprevalence of SARS-CoV-2 was 45.9%. IgM antibodies were found in 5.6% of participants. Older adolescents had higher seropositivity rates than younger adolescents (2 = 8.101, p = 0.017). There was no association between gender and seropositivity. Adolescents in public schools were more likely to be seropositive than those in private schools (2 = 25.242, p = 0.001). A higher seroprevalence was noticed among study participants in the lower socioeconomic class (x2 = 6.928, p = 0.031), and those in overcrowded classes. (2 = 79.303, p = 0.001). Conclusion: This study showed a high seroprevalence of SARS-CoV-2 among in-school adolescents. Behavioural change communication on SARS-CoV-2, vaccination of adole

关键词： Pandemic Adolescents Seroprevalence COVID-19

The Playwright, Creativity, and Society： unpacking Sunnie Ododo＇s To Return From the Void

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Sociology Study 2015年第2期5卷 103-113页

作者： King Akan Nnaemeka eyo university of Maiduguri Nigeria

The role of the playwright as a force for social reconstruction has been given much attention in theatre scholarship and continues to be a fertile ground for research. Because playwrights draw their stories from society, it is necessary to study their works in other to construe the ways by which they craft our world and make us view society through their own eyes, narratives, symbols, images, and imagination. This paper analyses the play To Return From the Void by Sunnie Ododo to unearth the salient issues and themes addressed in the play. This paper posits that through their treatment of society, playwrights influence the consciousness of the people by bringing salience to certain issues in society. The analysis of the play also reveals the playwright＇s ideological position on issues. It is plausible to say that character and dialogue are the media through which the playwright channels his ideologies in a play.

关键词： Agenda-setting ideology national development society playwright

Three-dimensional models:from cell culture to Patient-Derived Organoid and its application to future liposarcoma research

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Oncology Research 2025年第1期33卷 1-13页

作者： SAYuMI TAHARA SYDNeY ReNTSCH FeRNANDA COSTAS CASAL De FARIA PATRICIA SARCHeT ROMA KARNA FeDeRICA CALORe RAPHAeL e.POLLOCK Department of Surgery Division of Surgical OncologyThe James Comprehensive Cancer CenterThe Ohio State University Wexner Medical CenterColumbusOH 43210USA Department of Cancer Biology and Genetics The James Comprehensive Cancer CenterThe Ohio State University Wexner Medical CenterColumbusOH 43210USA

Liposarcoma is one of the most common soft tissue sarcomas,however,its occurrence rate is still rare compared to other *** to its rarity,in vitro experiments are an essential approach to elucidate liposarcoma *** cell culture-based research(2D cell culture)is still playing a pivotal role,while several shortcomings have been recently under *** vivo,mouse models are usually adopted for pre-clinical analyses with expectations to overcome the issues of 2D cell ***,they do not fully recapitulate human dedifferentiated liposarcoma(DDLPS)***,three-dimensional(3D)culture systems have been the recent research focus in the cell biology field with the expectation to overcome at the same time the disadvantages of 2D cell culture and in vivo animal models and fill in the gap between *** the liposarcoma rarity,we believe that 3D cell culture techniques,including 3D cell cultures/co-cultures,and Patient-Derived tumor Organoids(PDOs),represent a promising approach to facilitate liposarcoma investigation and elucidate its molecular mechanisms and effective therapy *** this review,we first provide a general overview of 3D cell cultures compared to 2D cell *** then focus on one of the recent 3D cell culture applications,Patient-Derived Organoids(PDOs),summarizing and discussing several PDO ***,we discuss the current and future applications of PDOs to sarcoma,particularly in the field of liposarcoma.

关键词： Cell culture Liposarcoma Patient-Derived Organoid(PDO) Spheroid Three-dimensional(3D)cell culture

Merging bound states in the continuum in an open acoustic resonator

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 124-131页

作者： Lujun Huang Bin Jia Artem S.Pilipchuk Sibo Huang Chen Shen Almas F.Sadreev Yong Li Andrey e.Miroshnichenko School of Physics and electronic Sciences East China Normal University Institute of Acoustics Tongji University L.V.Kirensky Institute of Physics Department of Mechanical engineering Rowan University School of engineering and Technology University of New South Wales at Canberra

Bound states in the continuum （BICs） are perfectly localized resonances despite embedding in the continuum ***,an isolated BIC is very sensitive to the structure ***,we report merging acoustic BICs in a single open resonator,robust against the structure *** find that both symmetry-protected BIC and Friedrich-Wintgen BIC are sustained in a single coupled waveguide-resonator *** varying the height and length of the resonator,these two BICs move toward each other and merge into a single one at a critical *** to an individual BIC,the merged BIC is robust against fabrication error because its Q-factor is proportional to ΔL-4,whereΔL embodies the structure *** essence of this extraordinary phenomenon is perfectly explained by the two-and three-level approximations of the effective nonHermitian ***,we present direct experimental demonstrations of the moving and merging of BICs in a coupled 3D waveguide-resonator,which are evidenced by the vanishing of the linewidth of Fano resonance in the transmission *** results may find exciting applications in designing high-quality acoustic sources,sensors and filters.

关键词： acoustic resonances bound state in the continuum high-Q resonances

Factors associated with mortality in neonatal surgical emergencies in a developing tertiary hospital in Nigeria

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Open Journal of Pediatrics 2013年第3期3卷 231-235页

作者： Iniabasi u. Ilori Akpabio M. Ituen Catherine S. eyo Department of Anaesthesia University of Uyo Teaching Hospital Uyo Nigeria Department of Surgery University of Uyo Teaching Hospital Uyo Nigeria

Background: The outcome of neonatal surgery depends on safe anaesthesia, competent surgery and good nursing care. The university of uyo Teaching Hospital, uyo, Nigeria, established in February 2008, has specialist anaesthetic and surgical manpower. The aim of the study was to determine the outcome and contributing factors to mortality in neonatal surgical emergencies at this new tertiary health institution. Method: It was a retrospective descriptive study of neonates that underwent emergency surgery at the university of uyo Teaching Hospital between June 2008 and May 2011. Data was obtained from the anaesthetic register, ward admission and discharged register, nurses report books and patient case files. Results: Forty-five neonates were operated upon during the three year period. There were 28 males and 17 females with a male to female ratio of 1.7:1. Forty-four (97.8%) of the neonates were referred to the university of uyo Teaching Hospital. The mean age and body weight at presentation were 47.5 ± 44.4 hours and 2.65 ± 0.61 kg respectively. The mean interval between admission and surgical intervention was 4.9 ± 6.2 days. Malformations of the gut (40%) and anterior abdominal wall (26.7%) were the major pathologies. The overall mortality following surgery was 62.2%. Case fatality rates ranged from 0% for Hirschprung’s disease to 100% for tracheoesophageal fistula. The immediate causes of death among these neonates were peritonitis from gangrenous gut, hypovolaemia and repeat surgery. Contributing factors to mortality were delivery in unorthodox health facilities, delay in presentation as well as surgical intervention and inefficient postoperative monitoring. Conclusion: emergency neonatal surgeries at the uuTH are associated with unacceptable high mortality. Reduction in such mortality would require campaign for early presentation, a lot more timely surgical interventions and upgrading of monitoring facili- ties to help in improving perioperative monitoring and care.

关键词： Neonatal Surgeries emergencies Delays High Mortality Rate

Inter-relationship of Various Results in Analysis of （14.0 MeV／u） Pb＋Pb Reaction using Mica and CN-85 Track Detectors

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Chinese Physics Letters 2005年第1期22卷 69-71页

作者： F.N.Khattak e.u.Khan TabassumNasir J.J.Baluch F.u.Khan u.W.C. GomalUniversityDeraIsmailKhanPakistan RadiationPhysicsDivision PINSTECHNiloreIslamabadPakistan DepartmentofPhysics GomalUniversityDeraIsmailKhanPakistan

Two detector materials mica and cellulose-nitrate(CN)-85 have been used to study (14.0MeV/u) Pb + Pb reaction. events of different multiplicities were registered in mica and CN-85 detectors using the 2π-geometry technique of solid state nuclear track detection. After removing the target material from the detectors the damaged trails in the detectors were revealed as tracks by proper chemical etching. The irradiated area of each sample was scanned and events of different multiplicities were traced. The binary events were bifurcated into elastic and inelastic events. The elastic binary events and three prong events, observed in the reaction, have been used to search out coefficients Cμν in the presence of both the detectors, for the reaction under study. using these coefficients 3- and 4-prong events have been analysed. From the detailed analysis of the results of (14.0MeV/u) Pb+Pb reaction, obtained from mica and CN-85 track detectors we observed a great resemblance of results obtained from the two detectors. Combining the results of both the detectors, we report some important outcomes.

关键词： CN-85轨迹探测器高能物理学铅原子碰撞反应固态

A co-infection model for HPV and syphilis with optimal control and cost-effectiveriess analysis

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International Journal of Biomathematics 2021年第7期14卷 1-44页

作者： A.Omame D.Okuonghae u.e.Nwafor B.u.Odionyenna Department of Mathematics Federal university of Technology OwerriNigeriai Department of Mathematics University of Benin Benin CityNigeria

A co-infection model for human papillomavirus(HPV)and syphilis with cost-effectiveness optimal control analysis is developed and *** full co-infectionmodel is shown to undergo the phenomenon of backward bifurcation when a certain con-dition is *** global asymptotic stability of the disease-free equilibrium of thefull model is shown not to exist when the associated reproduction number is less *** existence of endemic equilibrium of the syphilis-only sub-model is shown toexist and the global asymptotic stability of the disease-free and endemic equilibria of thesyphilis-only sub-model was established,for a special *** analysis is alsocarried out on the parameters of the *** the syphilis associated reproductionnumber,R_(0s),as the response function,it is observed that the five-ranked parametersthat drive the dynamics of the co-infection model are the demographic parameter μ,the efective contact rate for syphilis transmission,β_(s),the progression rate to late stage ofsyphilis σ2,and syphilis treatment rates:τ1 and τ2 for co-infected individuals in com-partments Hi and Hl,***,when the HPV associated reproductionnumber,R0h,is used as the response function,the five most dominant parameters thatdrive the dynamics of the model are the demographic parameter μ,the effective contactrate for HPV transinission,β_(h),the fraction of HPV infected who develop persistent HPV p1,the fraction of individuals vaccinated against incident HPV infection φ and the HPVvaccine eflicacy π*** simulations of the optimal control model showed that theoptimal control strategy which implements syphilis treatment controls for singly infectedindividuals is the most cost-effective of all the control strategies in reducing the burdenof HPV and syphilis co-infections.

关键词： Human papillomavirus syphilis co-infection optimal control cost-effectiveness analysis