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Journal of Modern Physics 2024年第10期15卷 1603-1614页

作者： Momath Ndiaye Madialène Sene Goumbo Ndiaye Department of Hydraulics Rural Engineering Machinery and Renewable Energy UFR Fundamental and Engineering Sciences University of Sine Saloum El Hadj Ibrahima NIASS Kaolack Senegal

In this present study, we analyzed the effects of Prandtl and Jacob numbers and dimensionless thermal conductivity on the velocity profiles in media (porous and liquid). The transfers in the porous medium and the liquid film are described respectively by the improved Wooding model and the classical boundary layer equations. The mesh of the digital domain is considered uniform in the transverse and longitudinal directions. The advection and diffusion terms are discretized with a back-centered and centered scheme respectively. The coupled systems of algebraic equations thus obtained are solved numerically using an iterative line-by-line relaxation method of the Gauss-Seidel type. The results show that the parameters relating to the thermal problem (the dimensionless thermal conductivity, the Prandtl (Pr) and Jacob (Ja) numbers) have no influence on the dimensionless speed, although the thermal and hydrodynamic problems are coupled. Via the heat balance equation. The results obtained show that the parameters relating to the thermal problem have no influence on the dimensionless speed, although the thermal and hydrodynamic problems are coupled via the heat balance equation. So, at first approximation with the chosen constants, we can solve the hydrodynamic problem independently of the thermal problem.

关键词： Condensation Implicit Finite Difference Thin Film Porous Material Model Wooding Vertical Wall

A new visual acuity test on touchpad for vision screening in children

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International Journal of Ophthalmology(English edition) 2020年第9期13卷 1436-1442页

作者： Elsa Di Foggia Noémie Stoll Hélène Meunier Adam Rimelé Pascal Ance Pierre-Henri Moreau Claude Speeg-Schatz Arnaud Sauer Ophthalmology Department CHU StrasbourgStrasbourgAlsace 67091France Ophthalmology Department CH ColmarColmarAlsace 68024France Cognitive and Adaptative neuroscience Laboratory StrasbourgAlsace 67000France Plateforme SILABE Strasbourg UniversityAlsace 67207France

AIM:To validate a visual acuity(VA)test application on touchpad in the screening of pediatric population by comparing VA results obtained with conventional ***:A cohort of 101 patients,44 girls and 57 boys with a median of 6.5 years old(3-10 years of age),presenting for eye examinations in Ophthalmology Department(Strasbourg,France)between November 1st,2018,and February 1st,2019 were *** and binocular VA testing was performed on the subject using both a standard test and the touchpad application(Monoyer,"E"or,Pigassou depending of children s capacities).Patients were excluded if they were physically or mentally unable to use the *** duration of each tests,the painfulness,the comprehension,the attention of children during the test and test’s preferences were also ***:There was a good linear correlation and intra-class correlation coefficient[ICC=0.50(0.***.0.64)for binocular acuity,0.74(0.***.0.82)for right eyes and 0.525(0.***.0.66)for left eye].The standard errors of measurement were very low(0.***.0.05.0.08 for binocular VA,right eyes VA and left eyes VA,respectively).There was no difference between two tests for right eye(P=0.126);left eye(P=0.098)and binocular acuity(P=0.085).Non inferiority was proved for all binocular[-0.06(-0.09.-0.03)],right eye[-0.04(-0.07.-0.01)]and left eye[-0.06(-0.09,-0.02)]*** sensitivity and specificity,which correspond to the ability for our app to detect amblyopia,were 92%and 80%***:Our touchpad application represents an efficient and valid test of VA in children with a high specificity to detect visual impairment.

关键词： visual acuity application screening children

Impact of high-fat diet and vitamin D_3 supplementation on aortic stenosis establishment in waved-2 epidermal growth factor receptor mutant mice

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Journal of Integrative Medicine 2019年第2期17卷 107-114页

作者： Bérénice Colleville Nicolas Perzo Guillaume Avinée Ana?s Dumesnil Frederic Ziegler Paul Billoir Hélène Eltchaninoff Vincent Richard Eric Durand Department of Biology Institut National de la Santé et de la Recherche Médicale U1096 (Endothélium Valvulopathies et Insuffisance Cardiaque) Normandie University Fédération Hospitalo-Universitaire REMODeling in Valvulopathy and Heart Failure Department of Cardiology Rouen University Hospital Department of Biology Institut National de la Santé et de la Recherche Médicale U1073 (Nutrition Inflammation et Dysfonction de l’axe Intestin-Cerveau) Normandie University Institute for Clinical Biology-General Biochemistry Unit Rouen University Hospital Department of Vascular Hemostasis Rouen University Hospital

Objective: The use of animal models of aortic stenosis(AS) remains essential to further elucidate its pathophysiology and to evaluate new therapeutic strategies. The waved-2 mouse AS model has been proposed;data have indicated that while aortic regurgitation(AR) is effectively induced, development of AS is *** aimed to evaluate the effect of high-fat diet(HFD) and vitamin D_3 supplementation in this ***: HFD and subcutaneous vitamin D_3 injections were initiated at the age of 6 weeks until the age of 6(n = 16, 6-month treatment group) and 9(n = 11, 9-month treatment group) months. Twelve waved-2 mice without supplementation were used as control. Echocardiography was performed at 3, 6 and 9 months. Blood serum analysis(calcium, 1,25(OH)_2D_3 and cholesterol), histology and immunohistochemistry(CD-31, CD-68 and osteopontin) were evaluated at the end of the experiment(6 or 9 months).Results: Total cholesterol and 1,25(OH)_2D_3 were significantly increased relative to the control group. HFD and vitamin D_3 supplementation did result in improvements to the model, since AS was only detected in 6(15.3%) mice(2 in the 3 groups) and AR was developed in the remaining animals. Echocardiographic parameters, fibrosis, thickness, inflammation and valvular calcification, were not significantly different between the 6-month treatment and control groups. Similar results were also observed in the 9-month treatment ***: These results suggest that HFD and vitamin D_3 supplementation have no effect in the waved-2 mouse model. This model essentially mimics AR and rarely AS. Further studies are needed to find a reliable animal model of AS.

关键词： Experimental model Epidermal growth factor receptor Vitamin D3 High-fat diet Aortic stenosis Aortic regurgitation

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世界辐射事故综述——截止1989年底

国外医学（放射医学核医学分册） 1991年第2期15卷 63-66,59页

作者： ne'not JC 魏康

一、引言自1895年伦琴发现X射线及1896年Ba-cquerel发现放射性以来,辐射事故屡有发生.一般可将事故分为两类:(1)涉及大量人群的事故;(2)只涉及数量有限的个体(常是工作人员)的事故.最近的两次灾难性事故——1986年苏联的切尔诺贝利事故... 详细信息

一、引言自1895年伦琴发现X射线及1896年Ba-cquerel发现放射性以来,辐射事故屡有发生.一般可将事故分为两类:(1)涉及大量人群的事故;(2)只涉及数量有限的个体(常是工作人员)的事故.最近的两次灾难性事故——1986年苏联的切尔诺贝利事故及1987年巴西的戈亚巴亚(Goiania)事故,既包含了大批人群也累及了不少受严重照射的个体.

关键词：辐射事故世界综述

Numerical Study of Thin Film Condensation in Forced Convection of Saturated Vapor on a Vertical Wall Covered with a Porous Material

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Journal of Electronics Cooling and Thermal Control 2022年第1期11卷 1-12页

作者： Momath Ndiaye Goumbo Ndiaye Madialène Sene Fluid Mechanics and Applications Laboratory Hydraulics Rural Engineering Machinery and Renewable Energies Department Train-ing and Research Unit Sine Saloum El Hadj Ibrahima NIASS University Kaolack Senegal Civil Engineer Sen’eau Dakar Senegal

The study of forced convection in a porous medium has aroused and still arouses today the interest of many scientists and industrialists. A considerable amount of work has been undertaken following the discovery of the phenomenon. Solving a standard problem of forced convection in porous media comes down to predicting the temperature and velocity fields as well as the intensity of the flow as a function of the various parameters of the problem. A numerical study of the condensation in forced convection of a pure and saturated vapor on a vertical wall covered with a porous material is presented. The transfers in the porous medium and the liquid film are described respectively by the Darcy-Brinkman model and the classical boundary layer equations. The dimensionless equations are solved by an implicit finite difference method and the iterative Gauss-Seidel method. Our study makes it possible to examine and highlight the role of parameters such as: the Froude number and the thickness of the porous layer on the speed and the temperature in the porous medium. Given the objective of our study, the presentation of velocity and temperature profiles is limited in the porous medium. The results show that the Froude number does not influence the thermal field. The temperature increases with an increase in the thickness of the dimensionless porous layer. The decrease in the Froude number leads to an increase in the hydrodynamic field.

关键词： Condensation Implicit Finite Differences Thin Film Porous Material Darcy-Brinkman Model Vertical Wall

Significance of scintigraphy for the localisation of obscure gastrointestinal bleedings

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World Journal of Gastroenterology 2008年第32期14卷 5015-5019页

作者： Tanja Brünnler Frank Klebl Sascha Mundorff Christoph Eilles Michael Reng Hans von Korn Jürgen Schlmerich Julia Langgartner Stefan Grüne Department of Internal Medicine I University of Regensburg Department of Surgery Hospital Neumarkt Department of Nuclear Medicine University of Regensburg Department of Internal Medicine Hospital Bogen Department of Internal Medicine II Hospital Hetzelstift

AIM： To determine the role of scintigraphy in patients with gastrointestinal （GI） bleeding of unknown Iocalisation. METHODS： We performed retrospective analyses on 92 patients receiving scintigraphies from 1993 to 2000 in the University of Regensburg hospital, which were done for Iocalisation of GI bleeding as a diagnostic step after an unsuccessful endoscopy. In addition to the scintigraphies, further diagnostic steps such as endoscopy, angiography or operations were performed. In some of the scintigraphies with negative results, a provocation test for bleeding with heparinisation was carried out. RESULTS： 73% of all scintigraphies showed a positive result. In 4.5% of the positive results, the source was located in the stomach, in 37% the source was the small bowel, in 25% the source was the right colon, in 4.5% the source was the left colon, and in 20% no clear Iocalisation was possible. Only 4% of all scintigraphies were false positive. A reliable positive scintigraphy was independent of the age of the examined patient. A provocation test for bleeding with heparin resulted in an additional 46% of positive scintigraphies with a reliable Iocalisation in primary negative scintigraphies. CONCLUSION- Our results show that scintigraphy and scintigraphy with heparin provocation tests are reliable procedures. They enable a reliable Iocalisation in about half of the obscure GI-bleeding cases. Scintigraphy is superior to angiography in locating a bleeding. It is shown that even in the age of video capsule endoscopy and double-balloon enteroscopy, scintigraphy provides a reliable and directed localization of GI bleeding and offers carefully targeted guidance for other procedures.

关键词： Gastrointestinal bleeding Scintigraphy Localisation Angiography

Theoretical Establishment of the Mass Balance Equation and Determination of the Proportion (S)ffof Fossil Fuels as an Indicator of the Suess Effect

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Atmospheric and Climate Sciences 2021年第1期11卷 114-124页

作者： Maurice Ndeye Matar Sène Doudou Diop Radiocarbon Laboratory Institut Fondamentale d’Afrique Noire (IFAN) Cheikh Anta Diop University of Dakar Dakar-Fann Senegal Department of Physics Cheikh Anta Diop University of Dakar Dakar-Fann Senegal Botanic Laboratory Institut Fondamentale d’Afrique Noire (IFAN) Cheikh Anta Diop University of Dakar Dakar-Fann Senegal

Mass balance equations can be used to quantify the level of fossil carbon dioxide (CO2)ff at a given site by using samples of tree leaves or tree rings. These sites are often densely populated and highly industrialized areas. In this case, in addition to the natural carbon dioxide level of the site, there are several other components that are added to it. The approaches we propose in this paper are based on the isotopic fractionation of carbon and the laws of matter conservation. Mathematical equations are derived from this and we propose approaches to establish them. Our method has allowed us to come to the conclusion of the relationship that is already found in literature. But we term this relationship in another way by introducing the fraction of carbon modern F and the proportion of CO2 derived from fossil fuels, which will be noted (S)ff for the following. As an indicator of the Suess Effect, we have calculated these values in our different sites. Wooded areas sites which are located in urban areas have higher value of proportion of fossil fuel (S)ff .

关键词： Suess Effect Radiocarbon Mass Balance Fossil Fuel

Modeling of Explainable Artificial Intelligence for Biomedical Mental Disorder Diagnosis

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Computers, Materials & Continua 2022年第5期71卷 3853-3867页

作者： Anwer Mustafa Hilal Imène ISSAOUI Marwa Obayya Fahd N.Al-Wesabi Nadhem neMRI Manar Ahmed Hamza Mesfer Al Duhayyim Abu Sarwar Zamani Department of Computer and Self Development Preparatory Year DeanshipPrince Sattam Bin Abdulaziz UniversityAlkharj16278Saudi Arabia Department of Natural and Applied Sciences Community CollegeQassim UniversityBuraydahSaudi Arabia Department of Biomedical Engineering College of EngineeringPrincess Nourah Bint Abdulrahman UniversityRiyadh11564Saudi Arabia Department of Computer Science King Khalid UniversityMuhayel AseerSaudi Arabia&Faculty of Computer and ITSana’a UniversitySana’a31220Yemen Department of Information Systems King Khalid UniversityMuhayel Aseer62529Saudi Arabia Department of Natural and Applied Sciences College of Community-AflajPrince Sattam Bin Abdulaziz UniversityAl-Kharj16278Saudi Arabia

The abundant existence of both structured and unstructured data and rapid advancement of statistical models stressed the importance of introducing Explainable Artificial Intelligence(XAI),a process that explains how prediction is done in AI *** mental disorder,i.e.,Autism Spectral Disorder(ASD)needs to be identified and classified at early stage itself in order to reduce health *** this background,the current paper presents XAI-based ASD diagnosis(XAI-ASD)model to detect and classify ASD *** proposed XAI-ASD technique involves the design of Bacterial Foraging Optimization(BFO)-based Feature Selection(FS)*** addition,Whale Optimization Algorithm(WOA)with Deep Belief network(DBN)model is also applied for ASD classification process in which the hyperparameters of DBN model are optimally tuned with the help of *** order to ensure a better ASD diagnostic outcome,a series of simulation process was conducted on ASD dataset.

关键词： Explainable artificial intelligence autism spectral disorder feature selection data classification machine learning metaheuristics

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酸洗和固溶处理对不锈钢抗点蚀性能的影响

焊接学报 2000年第1期21卷 83-86页

作者：胡礼木 ne Hannerz 陕西工学院汉中723003 The Royal Inst.of Tech

研究了酸洗和固溶处理对 8种不锈钢钢筋电阻对焊接头抗点蚀能力的影响。研究发现 ,酸洗和固溶处理都能有效地改善和恢复不锈钢电阻对焊接头的抗点蚀性能。对于普通双相钢 ,固溶处理比酸洗能更有效地改善接头的抗点蚀性能 ,并无晶粒粗化... 详细信息

研究了酸洗和固溶处理对 8种不锈钢钢筋电阻对焊接头抗点蚀能力的影响。研究发现 ,酸洗和固溶处理都能有效地改善和恢复不锈钢电阻对焊接头的抗点蚀性能。对于普通双相钢 ,固溶处理比酸洗能更有效地改善接头的抗点蚀性能 ,并无晶粒粗化现象 ;对于奥氏体钢和超级奥氏体钢 ,固溶处理的效果不及酸洗 ,且会引起母材晶粒粗化。对含Mo含N较高钢种的对焊接头 ,两者的效果更佳 ,尤其是两者综合处理后的接头 ,其临界点蚀温度CPT甚至高于对应母材经酸洗以后的CPT。文章对比分析了母材和固溶处理前后接头的显微组织 ,讨论了引起上述抗点蚀性能变化的原因。文章还探讨了酸洗和Mo、N元素可以改善不锈钢抗点蚀性能的机理。

关键词：酸洗固溶处理点蚀不锈钢电阻对焊

复杂性理论的启示：管理学研究需要多元化方法

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科学学与科学技术管理 2008年第4期29卷 11-18页

作者： Myléne Hardy 杨震宁王以华清华大学经济管理学院北京100084

介绍了复杂性理论研究的主要哲学原则,比较了实证主义、后现代主义与复杂性理论的本体论与认识论原则,讨论了复杂性理论原则如何能被应用到社会科学尤其是管理学中,提出关于管理学诸多研究方法的再评价问题。研究结论是管理学研究中需... 详细信息

介绍了复杂性理论研究的主要哲学原则,比较了实证主义、后现代主义与复杂性理论的本体论与认识论原则,讨论了复杂性理论原则如何能被应用到社会科学尤其是管理学中,提出关于管理学诸多研究方法的再评价问题。研究结论是管理学研究中需要发展多元化研究方法。

关键词：认识论复杂性理论建构主义混合研究方法