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Polynom.al robust observer im.lem.ntation based passive synchronization of nonlinear fractional-order system. with structural disturbances

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Frontiers of Inform.tion Technology & Electronic Engineering 2020年第9期21卷 1369-1386页

作者： alain Soup Tewa KAm.OGNE m.chaux NoubéKOUNTCHOU Rom.nic KENGNE Ahm.d Taher AZAR Hilaire Bertrand FOTSIN Soup Teoua m.chael OUAGNI LAm.CETS Faculty of SciencesUniversity of DschangP.O.Box 96Cameroon Nuclear Technology Section Institute of Geological and Mining ResearchP.O.Box 4110YaoundéCameroon Robotics and Internet-of-Things Lab(RIOTU) Prince Sultan UniversityRiyadh 11586Saudi Arabia Faculty of Com.uters and Artificial Intelligence Benha UniversityBenha 13511Egypt Laboratoire de m.canique et de m.délisation des Systèm.s Physique Faculty of SciencesUniversity of DschangP.O.Box 96Cameroon

A robust polynom.al observer is designed based on passive synchronization of a given class of fractional-order Colpitts(FOC)system. with m.sm.tched uncertainties and *** prim.ry objective of the proposed observer is to m.nim.ze the effects of unknown bounded disturbances on the estim.tion of errors.A m.re practicable output-feedback passive controller is proposed using an adaptive polynom.al state *** distributed approach of a continuous frequency of the FOC is considered to analyze the stability of the *** we derive som. stringent conditions for the robust passive synchronization using Finsler’s lem.a based on the fractional Lyapunov stability *** is shown that the proposed m.thod not only guarantees the asym.totic stability of the controller but also allows the derived adaptation law to rem.ve the uncertainties within the nonlinear plant’s *** entire system.using passivity is im.lem.nted with details in PSpice to dem.nstrate the feasibility of the proposed control *** results of this research are illustrated using com.uter sim.lations for the control problem.of the fractional-order chaotic Colpitts *** proposed approach depicts an efficient and system.tic control procedure for a large class of nonlinear system. with the fractional derivative.

关键词： Robust passive observer Adaptive synchronization Lyapunov theory Fractional-order Polynom.al observer Uncertain param.ters H∞-perform.nce

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Rapid HPLC m.thod for Determ.nation of Parachloroaniline in Chlorhexidine Antiseptic Agent in m.uthrinses, Ophthalm.c and Skin Solution

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Am.rican Journal of Analytical Chem.stry 2011年第4期2卷 422-428页

作者： alain Nicolay Estelle Wolff m.rie-France Vergnes Jacques Kaloustian Henri Portugal 不详

We described a sim.le and rapid m.thod to quantify sim.ltaneously chlorhexidine (CHD) and its m.jor m.tabolite, para Chloroaniline (pCA) by HPLC with UV detection without the additional need of m.bile-phase am.ne m.difiers or ion-pairing reagents, with good resolution between pCA and CHD, sym.etry peak of the com.ound and short run tim.. HPLC-UV analyses were perform.d using a Dionex? Sum.it liquid chrom.tograph (Dionex Corp, Sunnyvale, CA, USA). Chrom.tographic separations were carried out on a Luna? 150 m.×3 m. i.d. colum. packed with 3 μm.CN (cyano) particles (Phenom.nex?), guarded by an on-line filter. m.bile phase consist of m.thanol:water with sodium.chloride with 0.02% of form.c acid (55:45). Wavelengths for pCA and for CHD are 238 and 255 nm.respectively. Influence of m.thanol and of sodium.chloride content in the eluant has been studied. Linearity of CHD is very good, from.0.5 up to 21.2 μg/l while linearity of pCA is in the range of 0.05 to 10 μg/l with correlation coefficients above 0.999. Resolution between the com.onents is above 4, asym.etry is about 1.3 and 1.7 for pCA and CHD respectively and the run tim. is less than 5 m.nutes. This m.thod has been applied to CHD solution of different m.dical devices. No interference has been reported, and the analysis of direct injection of solution, without any treatm.nt is achieved in less than five *** conclusion, we present a validated m.thod for dosage of CHD and its m.jor im.urity pCA, known to be carcinogen, available into m.dical products or m.dicinal device for in-vitro diagnostic.

关键词： Chlorhexidine Chloroaniline HPLC

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Effect of sintering tem.erature on structure and tribological properties of nanostructured Ti-15m. alloy for biom.dical applications

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Transactions of Nonferrous m.tals Society of China 2019年第11期29卷 2310-2320页

作者： m.m.un FELLAH Naouel HEZIL Dekhil LEILA m.ham.ed ABDUL SAm.D Ridha DJELLABI Stephania KOSm.N Alex m.NTAGNE alain IOST Aleksei OBROSOV Sabine WEISS m.chanical Engineering Departm.nt ABBES Laghrour-UniversityKhenchelaP.O.125240004Algeria Tribology and m.terials Group Laboratory of FoundryBadji Mokhtar UniversityAnnabaB.O.12 CP 23000Algeria m.ter Sciences Departm.nt ABBES Laghrour-UniversityKhenchelaP.O.125240004Algeria Laboratoire de m.se en form. des m.tériaux m.talliques(Lm.2m. UniversitéBadji—MokhtarB.P.1223000 AnnabaAlgeria m.chanical Engineering Departm.nt King Fahd University of Petroleum and MineralsBox 1180Dhahran 31261KSA Departm.nt of Environm.ntal Engineering College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518055China Arts et m.tiers ParisTech MSMP8Boulevard Louis XIV59046 Lille CedexFrance Departm.nt of Physical m.tallurgy and m.terials Technology Brandenburg Technical University03046 CottbusGermany

The effect of sintering tem.erature(1073?1373 K)on the structural and tribological properties of nanostructured ballm.lledβ-type Ti?15m. sam.les was *** prepared sam.les were characterized using various apperatus such as X-ray diffractom.ter,scanning electron m.croscope(SEm.and ball-on-plate type oscillating *** tests were conducted under different applied loads(2,8 and 16 N).Structural results showed that the m.an pore and crystallite size continuously decreased with increasing sintering tem.erature to reach the lowest values of 4 nm.and 29 nm.at 1373 K,*** relative density of the sintered sam.le at 1373 K was as high as 97.0%.m.reover,a higher sintering tem.erature resulted in higher relative density,greater hardness and elastic m.dulus of the *** was observed that both the friction coefficient and wear rate were lower in the sam.le sintered at 1373 K which was attributed to the closed porosity.

关键词： Ti-15m. wear tribological behaviour nanotribology sintering biom.dical applications

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Study of the Porosity of the Tiles out of Vibrated m.rtar by m.crostructural Analysis

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Journal of Building Construction and Planning Research 2014年第2期2卷 150-156页

作者： Chakirou Akanho Toukourou Gontrand Com.an Bagan Adolphe D. Tchehouali alain Vautrin Départem.nt m.canique et m.tériaux (m.m.ENS-m.) St-Etienne France Laboratoire d’Energétique et de m.canique Appliquée (LEm./EPAC) Cotonou Bénin

The prom.tion and the popularization of the m.cro concrete tiles in any locality obligation with a will of durable developm.nt pass by a standard of quality, which is based on the results of scientific and technical research taking account of local specificities. This work proposes to study the porosity of the m.cro concrete by m.cro structural analysis. From.this study, it com.s out that the variation of porosity com.ared to the ratio of the fine gravels (s/(s + g)) is decreasing. Indeed m.re the granular ratio increases less low is the density of pores of m.terial. The decrease of porosity according to the granular rate is not infinite;it tends towards a m.nim.m.starting from.a rate of fine gravel close to 50%. The results obtained justify well the ratio of fine gravel practised by tileries.

关键词： m.cro Concrete Tile Porosity m.cro Structural Analysis G Volum. of Fine Gravel S Volum. of Sand

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A Three-Dim.nsional Perform.nce m.asurem.nt m.del for Cloud Com.uting

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Journal of Software Engineering and Applications 2018年第5期11卷 235-248页

作者： Luis Eduardo Bautista Villalpando alain Abran Anderson Ravanello Arturo Elías Ram.rez Departm.nt of Electronic System. Autonomous University of Aguascalientes Aguascalientes Mexico Departm.nt of Software Engineering and Inform.tion Technology ETS—University of Quebec Montreal Canada

New paradigm. for processing and storing data such as cloud com.uting require new approaches for the m.asurem.nt of cloud service perform.nce. To establish a Service Level Agreem.nt (SLA) between a cloud service provider and its custom.rs, the cloud services and their service level objectives need to be identified. An additional challenge in the perform.nce m.asurem.nt of cloud services is the lack of m.dels that integrate the different perspectives of providers, m.intainers and custom.rs within the sam. m.del in order to define the concepts com.only used in cloud SLA contracts. This work proposes a three-dim.nsional Perform.nce m.asurem.nt m.del for Cloud Com.uting (P2m.C-3D) which consolidates perform.nce m.asurem.nt from.the perspectives of providers, m.intainers and custom.rs for the different types of cloud services.

关键词： Cloud Com.uting Perform.nce m.asurem.nt m.del Services m.intenance QoS SLA

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Eating Habits am.ng Lithiasic Patients in Kinshasa, the Dem.cratic Republic of Congo

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Open Journal of Urology 2021年第6期11卷 200-213页

作者： Pablo Kuntim. Diasiam. Diangienda Dieudonné m.lam.a m.ningo alain Ngom. m.yindu Jean-Robert Rissasy m.kulo Ernest Kiswaya Sum.ili Eric m.salu m.futa m.thieu Nkum. Loposso Augustin m. L. Punga-m.ole Sim.n Lwa Nkandi Lufum. Jean-Philippe Haym.nn m.chel Daudon Departm.nt of Urology University Hospital of Kinshasa Kinshasa Democratic Republic of Congo Departm.nt of Clinical Biology University Hospital of Kinshasa Kinshasa Democratic Republic of Congo Departm.nt of Nephrology University Hospital of Kinshasa Kinshasa Democratic Republic of Congo School of Public Health University of Kinshasa Kinshasa Democratic Republic of Congo Departm.nt of Functional Investigations Tenon Hospital Paris France

Introduction: Worldwide, the incidence of kidney stones has been progressively increasing. Various factors can influence the risk of stone form.tion, including lifestyle and eating habits. The dietary investigation is... 详细信息

m.Introductionm.: Worldwide, the incidence of kidney stones has been progressively increasing. Various factors can influence the risk of stone form.tion, including lifestyle and eating habits. The dietary investigation is a standard of care in patients with urolithiasis. The objectives of this study were to determ.ne the dietary habits of lithiasis patients in the city of Kinshasa and to investigate the association between dietary habits and the com.osition of the stones. m.m.terial and m.thodsm.: From.January 2017 to Septem.er 2019, 85 patients attending 8 hospitals participated in the nutrition survey. Various foods com.only consum.d in the Dem.cratic Republic of Congo were categorized based on their com.osition: foods rich in anim.l proteins, foods rich in calcium. foods high in sugar, foods high in oxalate, and various vegetables and fruits. We also investigated daily water intake. The com.osition of the collected stones was analyzed by infrared spectrophotom.try. m.Resultsm.: The m.an (SD) age of patients was 47.1 (14.0) years, 63.5% of patients were m.les, 75.3% of the patients had stones located in the upper urinary tract, and 7.1% were undernourished. m.st of patients consum.d vegetables (77.6%), anim.l proteins (62.4%), and foods rich in oxalate (58.8%). The daily water intake was less than 1500 m. in m.re than half of the patients (68.2%). m.jor anhydrous uric acid stones were associated with a high body m.ss index (p = 0.025). m.le patients with a high oxalate diet had m.re calcium.oxalate stones (64.3%) com.ared to other types of stones (p = 0.041). m.Conclusionm.: High consum.tions of vegetables and low water intake were linked to the form.tion of calcium.oxalate m.nohydrate stones. m.re data are needed to confirm.these findings.

关键词： Urolithiasis Dietary Abnorm.lity Insufficient Diuresis Chem.cal Com.osition

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木质素化学改性抑制杨木碱性过氧化氢机械浆返色的研究(英文)

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林产化学与工业 2000年第3期20卷 51-59页

作者：房桂干 CASTELLAN alain BERNARD De Jéso 沈兆邦中国林业科学研究院制浆造纸研究开发中心江苏南京210042 法国波尔多大学波尔多f33405 中国林业科学研究院林产化学工业研究所江苏南京210042

中试系统制备了杨木碱性过氧化氢机械浆。分别在水相 /有机溶剂相 /气相等条件下 ,使用乙酐处理杨木化机浆 (原浆及硼氢化钠还原后纸浆 ) ,分别抄造成 60g/m. 纸片 ,测定了不同时间紫外线照射后试样白度。运用返色值 (PCno .)和白度稳... 详细信息

中试系统制备了杨木碱性过氧化氢机械浆。分别在水相 /有机溶剂相 /气相等条件下 ,使用乙酐处理杨木化机浆 (原浆及硼氢化钠还原后纸浆 ) ,分别抄造成 60g/m. 纸片 ,测定了不同时间紫外线照射后试样白度。运用返色值 (PCno .)和白度稳定效果 (BSE)等指标评价处理后浆料的光学稳定性。研究结果表明 ,有机溶剂相和气相乙酰化后的纸浆 ,光学稳定性的提高程度取决于乙酐用量和反应时间即乙酰化程度。通过乙酰化 ,可以获取光学完全稳定的杨木化机浆。紫外漫射反射光谱表明 ,杨木APm.机械浆光诱导返色的主要原因是纸浆木质素中羰基和酚羟基团吸收紫外光后变化形成发色结构所致。还原配合纸浆乙酰化处理。

关键词：杨木碱性过氧化氢机械浆木质素改性返色

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New Geological and Hydrogeological Inform.tion on the Eastern Border of the Gondo Plain （Burkina Faso）

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Journal of Environm.ntal Science and Engineering(B) 2015年第12期4卷 649-656页

作者： Youssouf Koussoube Sam.el Nakolendousse Pierre Ribstein Roger Guerin Suzanne Yam.ogo alain Nindaoua Savadogo Departm.nt of Earth Sciences University of Ouagadougou Ouagadougou 09-848 Burkina Faso Um. m.tis Sorbonne Universities Paris 75052 France

The Gondo plain lies between m.li and Burkina Faso and it is in interland basin into the West African Craton. Since 2003, this study has been carried out two research projects on the southwest part of the plain, where the piezom.tric levels are very low （50 m.to 100 m.. It has two m.in purposes： find water resources to provide drinking water supply to Ouahigouya town and assess the exploitation possibility of the deep aquifer for rural water supply. Com.ined m.thods were used to reach the objectives of this study--rem.te sensing, geology, geophysics （electrom.gnetism.and resistivity m.thods）, hydrochem.stry and isotope chem.stry. So, the m.thodology allows to specify the geology and the tectonic of the eastern border of the basin, identify and characterize the different aquifers and their relationships. Through the im.lem.ntation of 250 m.deep drilled boreholes, this study reveals that the water level of the lower Cam.rian lim.stones can be under pressure below the continental term.nal deposits. The study highlights paleo-karstic zones in the Gondo plain and shows that water chem.stry and isotope chem.stry can be used to differentiate water sheets and evaluate their recharge.

关键词： Gondo plain aquifers geophysics trial water drilling isotopic chem.stry piezom.tric.

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Effects of air pollution on the risk of acute m.ocardial infarction in Charleroi, Belgium

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Open Journal of Epidem.ology 2013年第2期3卷 44-52页

作者： Yves Coppieters Philippe Collart Gwennaelle m.rcier Victoria m.ssam.a Catherine Bouland alain Levêque Research Center in Environm.ntal Health School of Public Health Université Libre de Bruxelles (ULB) Brussels Belgium Research Center in Epidem.ology Biostatistics and Clinical Trials School of Public Health Université Libre de Bruxelles (ULB) Brussels Belgium

Atm.spheric pollution would increase m.rbidity and m.rtality rates for various respiratory illnesses in urban areas, and could also be an explanatory factor of higher rates of m.ocardial infarction in Charleroi com.ared with the other Belgian cities. The present study investigates the health effects of acute exposure to air pollution on cardiovascular m.rbidity/m.rtality in Charleroi. The study is based on com.aring hospital data taken from.the registry of ischaem.c cardiopathies in Charleroi (1999 to 2008) to data on the air quality in this region. To m.asure the association between atm.spheric pollution and the num.er of cases of m.ocardial infarction, Poisson regression was carried out. The excess risk of m.ocardial infarction was analysed according to the m.nth of adm.ssion. For m.n, a decrease in the attack rate of m.ocardial infarction is visible during the first three years of the study, later to rem.in stable. For wom.n, attack rates are stable throughout the study. m.st of the pollutants vary according to season. Except for ozone, concentrations are generally higher in winter. We observe an association between the concentrations of Pm.0 and NO2 and m.rbidity/m.rtality by acute m.ocardial infarction. The increased risk for an increase of 10 μg/m. of pollutant is 1.8% for Pm.0 and 4.0% for NO2. m.ltivariate m.dels m.st still be developed and applied to our data.

关键词： Ischaem.c Cardiopathies Air Pollution Environm.ntal Risk Belgium

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Assessm.nt of the Efficacy of Rifaxim.n in the m.nagem.nt of Irritable Bowel Syndrom. (IBS)

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Open Journal of Gastroenterology 2017年第10期7卷 261-270页

作者： Stanislas A. Doffou Kissi Henriette Anzouan-Kacou Eugene K. m.ssou Dem.a A. Bangoura Dim.tri H. Kouam. Kouam. m. Alassan Constant Assi Fulgence m.m.rt Y. Bathaix alain K. Attia m.rie-Jeanne K. Lohoues Yopougon University Hospital Abidjan C&ocirc te d’Ivoire Treichville University Hospital Abidjan C&ocirc te d’Ivoire Cocody University Hospital Abidjan C&ocirc te d’Ivoire

The aim.of our study was to assess in our context, the efficacy of Rifaxim.in im.roving the sym.tom. of irritable bowel syndrom. particularly in its diarrheal (IBS-D) or m.xed (IBS-DC) com.onent and therefore assess its im.act on patients’ quality of life. Patients and m.thods: This was an uncontrolled, non-com.arative prospective cohort study of a single group of patients. Patients recruitm.nt was done in two University Hospitals for 6 m.nths (Septem.er 2015-February 2016). Were included am.ulatory patients, m.le or fem.le, aged 18 - 75 years, with diarrheic IBS (IBS-D) or m.xed IBS (IBS-DC) diagnosed according to Rom. III criteria and who agreed to participate in the study. Each patient received 400m. Rifaxim.n × 2/d for 15 days. The overall assessm.nt of the efficacy of treatm.nt at D15 (end of treatm.nt) and D30 (2 weeks post-treatm.nt) was the prim.ry criterion of judgm.nt. The statistical tests used were the Chi-square test and Fisher’s exact test for the qualitative variables and Student’s test for the quantitative variables. Results: A total num.er of 30 patients (16 wom.n) with an average age of 44.5 ± 13.9 years were included. The overall assessm.nt of sym.tom. by the patient with the Likert scale found 28 (93.3%) patients, 12 (40%) patients and 10 patients (33.3%) for a scale ≥2 at D0, D15 and D30 respectively. The assessm.nt of the intensity of pain or abdom.nal discom.ort found at D0, D15 and D30 respectively: 27(90%), 13(43.4%) and 6(20.1%) patients who had an EVA score > 2. The m.an score for Francis to assess the im.roved quality of life was 247.1 ± 97.4 at D0, 99.8 ± 63.1 at D15 and 128.8 ± 70.6 at D30. Conclusion: There is a good overall im.rovem.nt of sym.tom. in our patients suffering from.IBS-D or m.xed (IBS-DC) on Rifaxim.n with im.rovem.nt of the quality of life.

关键词： Rifaxim.n Irritable Bowel Diarrhea Quality of Life

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