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Digestive fungal flora in asymptomatic subjects in Bobo-Dioulasso,Burkina Faso

Asian Pacific Journal of Tropical Biomedicine 2014年第8期4卷 659-662页

作者： Bamba Sanata ouédraogo Abdoul Salam Sangaré Ibrahim Zida Adama Cissé Mamoudou Karou D.Simplice Simpore Jacques Guiguemdé T.Robert Hennequin Christophe Department of Parasitology-Mycology University Hospital Sanou SouroBobo-DioulassoBurkina Faso Department of Parasitology-Mycology Higher Institute of Health SciencesPolytechnic University of Bobo-DioulassoBurkina Faso Department of Bacteriology-Virology Higher Institute of Health SciencesPolytechnic University of Bobo-DioulassoBurkina Faso Faculty of Health Sciences University of OuagadougouBurkina Faso Biomolecular Research Center Pietro Annigoni(CERBA/LABIOGENE) OuagadougouBurkina Faso Service of Parasitology-Mycology Saint Antoine de Paris HospitalFrance

Objective::To identify Candida species in asymptomatic subjects in Bobo-Dioulasso(Burkina Faso) by the matrix—assisted laser desortption ionization—time of flight mass ***:A cross-sectional study was conducted from January to February 2013 in BohoDioulasso to coiled fecal and urine specimens from voluntary *** strains were isolated on Sabouraud dextrose agar and analyzed using matrix—assisted laser desorption ionisation—time-of—flight mass ***:A total of 135 samples including stools(78.5%,106/135) and urine(21.5%,29/135) were *** results revealed that fecal specimens contained mainly Candida krusei(***)(42.5%) followed by Candida albicans(29.3%),Candida glabrata(18.0%) and Candida tropicalis(***)(4.7%).***(34.6%) was also found to be the most frequently identified in urine samples followed by Candida albicans(27.0%).***(15.4%) and Candida parapsilosis,However,uncommon species such as Candida *** *** norvegensis,Candida *** lusitaniae and Candida robusta were also identified from fecal and urines ***:This study noted the emergence of species such as ***,Candida glabrata,Candida parapsiolosis,***,Candida nivariensis,Candida norvegensis,and *** is an imperative to take into account the existence of these species in the therapeutic management of patients in Bobo—Dioulasso.

关键词： Candida Mass spectrometry Matrix—assisted laser desorption ionization—time of flight BoboDioulasso

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Modes of Shale-Gas Enrichment Controlled by Tectonic Evolution

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Acta Geologica Sinica(English Edition) 2018年第5期92卷 1934-1947页

作者： LI Chaochun ou Chenghua State-Owned Asset Management Office Southwest Petroleum University State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University

The typical characteristics of shale gas and the enrichment differences show that some shale gases are insufficiently explained by the existing continuous enrichment mode. These shale gases include the Wufeng–Longmaxi shale gas in the Jiaoshiba and Youyang Blocks, the Lewis shale gas in the San Juan Basin. Further analysis reveals three static subsystems（hydrocarbon source rock, gas reservoirs and seal formations） and four dynamic subsystems（tectonic evolution, sedimentary sequence, diagenetic evolution and hydrocarbon-generation history） in shale-gas enrichment systems. Tectonic evolution drives the dynamic operation of the whole shale-gas enrichment system. The shale-gas enrichment modes controlled by tectonic evolution are classifiable into three groups and six subgroups. Group I modes are characterized by tectonically controlled hydrocarbon source rock, and include continuous in-situ biogenic shale gas（Ⅰ_1） and continuous in-situ thermogenic shale gas（Ⅰ_2）. Group Ⅱ modes are characterized by tectonically controlled gas reservoirs, and include anticline-controlled reservoir enrichment（Ⅱ_1） and fracture-controlled reservoir enrichment（Ⅱ_2）. Group Ⅲ modes possess tectonically controlled seal formations, and include faulted leakage enrichment（Ⅲ_1） and eroded residual enrichment（Ⅲ_2）. In terms of quantity and exploitation potential, Ⅰ_1 and Ⅰ_2 are the best shale-gas enrichment modes, followed by Ⅱ_1 and Ⅱ_2. The least effective modes are Ⅲ_1 and Ⅲ_2. The categorization provides a different perspective for deep shale-gas exploration.

关键词： shale gas enrichment mode tectonic evolution hydrocarbon source gas reservoir seal formation

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Spatial-temporal Analysis of Daily Air Quality Index in the Yangtze River Delta Region of China During 2014 and 2016

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Chinese Geographical Science 2019年第3期29卷 382-393页

作者： YE Lei ou Xiangjun School of Geographic Science Nantong University School of Geography Geomatics and PlanningJiangsu Normal University

Urban air pollution is a prominent problem related to the urban development in China, especially in the densely populated urban agglomerations. Therefore, scientific examination of regional variation of air quality and its dominant factors is of great importance to regional environmental management. In contrast to traditional air pollution researches which only concentrate on a single year or a single pollutant, this paper analyses spatiotemporal patterns and determinants of air quality in disparate regions based on the air quality index(AQI) of the Yangtze River Delta region(YRD) of China from 2014 to 2016. Results show that the annual average value of the AQI in the YRD region decreases from 2014 to 2016 and exhibit a basic characteristic of ‘higher in winter, lower in summer and slightly high in spring and autumn'. The attainment rate of the AQI shows an apparently spatial stratified heterogeneity, Hefei metropolitan area and Nanjing metropolitan area keeping the worst air quality. The frequency of air pollution occurring in large regions was gradually decreasing during the study period. Drawing from entropy method analysis, industrialization and urbanization represented by per capita GDP and total energy consumption were the most important factors. Furthermore, population agglomeration is a factor that cannot be ignored especially in some mega-cities. Limited to data collection, more research is needed to gain insight into the spatiotemporal pattern and influence mechanism in the future.

关键词： air quality index(AQI) spatial-temporal evolution contributing factors Yangtze River Delta(YRD)

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A New Chaotic Parameters Disturbance Annealing Neural Network for Solving Global Optimization Problems

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Communications in Theoretical Physics 2003年第4期39卷 385-392页

作者： MAWei WANGZheng－ou InstituteofSystemsEngineering TianJinUniversityTranjin300072China

Since there were few chaotic neural networks applicable to the global optimization, in this paper, we propose a new neural network model ? chaotic parameters disturbance annealing (CPDA) network, which is superior to other existing neural networks, genetic algorithms, and simulated annealing algorithms in global optimization. In the present CPDA network, we add some chaotic parameters in the energy function, which make the Hopfield neural network escape from the attraction of a local minimal solution and with the parameter annealing, our model will converge to the global optimal solutions quickly and steadily. The converge ability and other characters are also analyzed in this paper. The benchmark examples show the present CPDA neural network's merits in nonlinear global optimization.

关键词： Hopfield neural network global optimization chaotic parameters disturbance simulated annealing

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Online Magnetic Flux Leakage Detection System for Sucker Rod Defects Based on LabVIEW Programming

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Computers, Materials & Continua 2019年第2期58卷 529-544页

作者： ou Zhang Xueye Wei School of Electronic and Information Engineering Beijing Jiaotong UniversityBeijing100044China

Aiming at the detection of the sucker rod defects,a real-time detection system is designed using the non-destructive testing technology of magnetic flux leakage(MFL).An MFL measurement system consists of many parts,and this study focuses on the signal acquisition and processing *** of all,this paper introduces the hardware part of the acquisition system in detail,including the selection of the Hall-effect sensor,the design of the signal conditioning circuit,and the working process of the single chip computer(SCM)control serial *** on LabVIEW,a graphical programming software,the software part of the acquisition system is written,including serial port parameter configuration,detection signal recognition,original signal filtering,real-time display,data storage and ***,an experimental platform for the MFL detection is set up,and the MFL measurement is carried out on the transverse and longitudinal defects of the sucker rod *** experimental result shows that the designed acquisition and processing system has good detection performance,simple design and high flexibility.

关键词： flux leakage testing real-time detection sucker rod LabVIEW acquisition and processing

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Seismic failure mode improvement of RC frame structure based on multiple lateral load patterns of pushover analyses

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Science China(Technological Sciences) 2011年第11期54卷 2825-2833页

作者： BAI JiuLin ou JinPing School of Civil Engineering Harbin Institute of Technology Harbin 150090 China Faculty oflnfrastructure Engineering Dalian University of Technology Dalian 116024 China

The structural failure under severe ground motions is primarily caused by their unreasonable seismic failure mode (SFM). This paper provides a methodology aiming at the SFM improvement of reinforced concrete frame structure. An RC frame is modeled and three types of failure criterion are defined as the premise of SFM. Static pushover analysis is adopted to identify the SFM. The dominant failure modes and failure paths of the structure are obtained in three lateral load patterns (inverted trian- gular distribution, uniform distribution and adaptive distribution). Based on the pushover analysis, the sequential failure of components and the probability of the occurrence of plastic hinges are determined. By this, weak components of the structure are detected and herein are strengthened. The project cost of the proposed strengthening strategy increases by 2.4%. Capacity spectrum method is used to study the performance of the strengthening structure. Pushover analysis is conducted again to present the improvement of strength and ductility. Lateral drift and local response through IDA are also studied to indicate that the strengthening of some columns and beams can improve the SFM to enhance the seismic capacity of structure.

关键词： seismic failure modes (SFM) improvement failure path pushover incremental dynamic analysis (IDA)

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Antibacterial, Anti-Inflammatory and Antioxidant Activities of an ACAZY Herbal Formula Used in Traditional Medicine to Treat Respiratory Infections

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Natural Science 2024年第9期16卷 131-145页

作者： Mohamed Bonewendé Belemlilga Bagora Bayala Abdoul Gilchrist Laurent Boly Madinatou Annick ouédraogo Alida Raissa Boina Boubacar Yaro Florentina Badea Camélia Diguti Moumouni Koala Denise P. Ilboudo Charles Bavouma Sombié Pascal Nadembega Jean-Marie Compaoré Paul Darga Mahoukèdè Théodora Zohoncon Moussa ouédraogo Aristide Traore Noufou ouédraogo Florentina Matei Rasmane Semdé Sylvin ouédraogo Jacques Simporé Innocent Pierre Guissou Laboratoire de Recherche-Dveloppement de Phytomdicaments et Mdicaments (LR-D/PM) Institut de Recherche en Sciences de la Sant (IRSS) Centre National de la Recherche Scientifique et Technologique (CNRST) Ouagadougou Burkina Faso Centre de Recherche Biomolculaire Pietro Annigoni (CERBA) Ouagadougou Burkina Faso Laboratoire de Biologie Molculaire et de Gntique (LABIOGENE) Universit Joseph KI-ZERBO Ouagadougou Burkina Faso Ecole Normale Suprieure Koudougou Burkina Faso Laboratoire de Dveloppement du Mdicament (LADME) Centre de Formation de Recherche et dExpertises en Sciences du Mdicament (CEA-CFOREM) cole Doctorale Sciences de la Sant (ED2S) Universit Joseph KI-ZERBO Burkina Faso Laboratoire de Microbiologie Applique Universit des Sciences Agronomiques et de Mdecine Vtrinaire (UASMV) de Bucarest en Roumanie Bucharest Romania Dpartement de la mdecine traditionnelle Ministre de la Sant et de lHygine Publique Ouagadougou Burkina Faso Universit Saint Thomas dAquin (USTA) Ouagadougou Burkina Faso

ACAZY is a plant formula used in traditional medicine in Burkina Faso to treat respiratory infections. After phytochemical analysis, this study evaluated extracts’ anti-inflammatory, antioxidant and antibacterial properties from the ACAZY recipe. Three extractions, an aqueous macerate (AM), an aqueous decoction (AD) and an hydroethanolic macerate (HEM) of the ACAZY recipe powder were carried out. Phytochemical screening of the extracts was carried out using high-performance thin-layer chromatography (HPTLC) and the determination of phenolic compounds. The anti-inflammatory potential was assessed in vitro using pro-inflammatory enzyme inhibition tests. 2,2-Diphenyl-1-picrylhydrazyl (DPPH) and Ferric-reducing antioxidant power (FRAP) antioxidant properties were also determined. The antibacterial activity was evaluated on Staphylococcus aureus and Streptococcus pneumoniae strains. Phytochemical analysis revealed the presence of flavonoids, saponins, tannins, anthracenosids, sterols and triterpenes in the extracts. The extracts inhibited pro-inflammatory enzymes by more than 40% at only 100 µg/mL. The extracts also showed potent antibacterial activity with a minimum inhibitory concentration 1 mg/mL on Staphylococcus aureus and 2 mg/mL on Streptococcus pneumoniae. The extracts in the ACAZY formula have shown anti-inflammatory and antioxidant properties in vitro. The AD also showed an antibacterial activity. This justifies its use in traditional medicine to treat acute respiratory infections.

关键词： ACAZY Anti-Inflammatory Antioxidant Antibacterial In Vitro

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Laplacian Speech Model and Soft Decision Based MMSE Estimator for Noise Power Spectral Density in Speech Enhancement

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Chinese Journal of Electronics 2018年第6期27卷 1214-1220页

作者： ou Shifeng SONG Peng GAO Ying School of Science and Technology for Opto-electronic Information Yantai University School of Computer and Control Engineering Yantai University

The estimation of noise Power spectral density(PSD) is a very crucial issue for speech enhancement as a result of its significant effect on the quality and intelligibility of the enhanced speech. Most of the existing estimators for noise PSD try to employ Gaussian speech priors, which, however, have been proven inconsistent with the reality. We derived an effective solution to this problem of estimating noise PSD in the Minimum mean square error(MMSE) sense when the speech component is modeled by a Laplacian distribution. Meanwhile, the soft decision technique instead of the hard Voice activity detection(VAD) is evolved into our algorithm, which can automatically makes the estimation unbiased without requiring a bias compensation. The performance of the proposed method is tested by several objective and subjective measures under various stationary and nonstationary noise environments. The results confirm that our method achieves good performance for all the noise conditions and Signalnoise-ratio(SNR) settings.

关键词： Noise PSD estimation Speech enhancement Laplacian speech model Soft decision

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Physicochemical and Biochemical Composition of Balanites aegyptiaca Seed and Seed Oil from Burkina Faso

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Food and Nutrition Sciences 2023年第12期14卷 1206-1220页

作者： Patrice Bazongo Lassané ouédraogo Pingdwindé Marie Judith Samadoulougou-Kafando Martin Kiendrebeogo Nicolas Barro Laboratoire de Biologie Moleculaire d’Epidemiologie et de Surveillance des Bacteries et Virus transmis par les aliments et l’eau (LaBESTA) Université Joseph KI-ZERBO Ouagadougou Burkina Faso Centre National de la Recherche Scientifique et Technologique (CNRST) Institut de l’Environnement et de Recherches Agricoles (INERA)/Laboratoire de l’Environnement et des Ecosystèmes Forestiers Agroforestiers et Aquatiques (LaboEcoFAA) Ouagadougou Burkina Faso Centre National de la Recherche Scientifique et Technologique (CNRST)/Institut de Recherche en Sciences Appliquées et Technologies (IRSAT)/Laboratoire des Sciences et Technologies des Aliments et Nutrition (LabSTAN) Ouagadougou Burkina Faso Laboratoire de Biochimie & Chimie Appliquées Université Joseph Ki-Zerbo Ouagadougou Burkina Faso

In Burkina Faso, the seeds of Balanites aegyptiaca have been considered to be potentially high lipid, protein and mineral sources but seem to be neglected and sometimes unknown by communities. This study aims to complete data on seed oil and detail on amino acids and minerals composition of the seed of B. aegyptiaca for better use. Physicochemical parameters such as moisture and ash content, saponification index, iodine, acid value, peroxide value and the melting point were determined. Seed oil triglycerides, fatty acids and amino acids have been estimated throughout this study. The moisture and ash content were 3.70% ± 0.1% and 2.90% ± 0.2%, respectively. The saponification and iodine values were respectively 181.96 ± 0.4 mg KOH/g of oil and 104.86 ± 0.6 g of iodine/100 g of oil. Polyunsaturated fatty acid content (50.94%) was the most important. Triglyceride (LLO, 22.4%) was the major triglyceride. 9 essential amino acids and 9 non-essential amino acids were identified. Phenylalanine (11697.82 ± 0.00 mg/kg) was the most important essential amino acid. The content of 21 minerals was determined and the most important was potassium (9323.13 ± 0.01 mg/kg). Ca/P, Ca/Mg, Ca/Mg and Na/K ratios were 0.34;1.18;0.04 and 0.19 respectively. B. aegyptiaca seed oil is a source of multiple nutritional values and can be used by the population for multipurpose.

关键词： Seed Seed Oil Fatty Acids Amino Acids Minerals Balanites aegyptiaca Burkina Faso

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The Nonexistence of the Solutions for the Non-Newtonian Filtration Equation with Absorption

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Journal of Partial Differential Equations 2021年第4期34卷 369-378页

作者： ou Qitong School of Applied Mathematics Xiamen University of TechnologyXiamen 361024China

The paper proves the nonexistence of the solution for the following Cauchy problem{ut=div(|■u^m|(p-2■u^(m)))^-λu^(q),u(x,0)=δ(x),(x,t)∈S_(T)=R^(N)×(0,T),x∈R^(N),under some conditions on m,p,q,λ,whereδis Dirac... 详细信息

关键词： Non-Newtonian filtration equation Cauchy problem nonexistence

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