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Dissolved Organic Matter Features of Three Adjacent Eastern Mediterranean Urbanized Watersheds

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Open Journal of Modern Hydrology 2024年第3期14卷 153-173页

作者： Nour Abboud Elias michel Maatouk.Zeinab Matar Veronique k.zpard Research and Analysis Platform for Environmental Sciences (PRASE) Doctoral School of Sciences and Technology (EDST) The Lebanese University Rafic Hariri Campus Hadat Lebanon Laboratory of Georessources Geosciences and Environment (L2GE) Faculty of Sciences The Lebanese University Fanar Lebanon Department of Earth and Life Sciences Faculty of Sciences The Lebanese University Hadat Lebanon

Landscape urbanization broadly affects ecosystems in coastal watersheds, but, until now, the influence of nonpoint source urban inputs on dissolved organic matter (DOM) amount, composition, and source is poorly understood. To understand how DOM composition varied with urbanization, fluorescence excitation-emission matrices (EEMs) were determined for urban and non-urban waters from upstream to downstream sites along three adjacent coastal watersheds that flow into the Mediterranean Sea. Two humic DOM fluorescent components (humic-lik. and fulvic-lik. peak.) and two proteinic components (tyrosine-lik. and tryptophane-lik. peak.) were identified by EEM fluorescence. The results indicated that urbanization had an important influence on DOM concentration and composition, with urban waters having a high degree of DOM variation due to different land uses surrounding each body of water. Urban waters show a higher DOM fluorescence index (FI), the highest fluorescence intensity of protein-lik. manifested also by BIX values, and a lower value of the humification index (HIX) than non-urban waters which were dominated by allochthonous inputs. In addition, the EEM was compared in dry and wet season where higher DOM amounts and FI appeared in summer due to autochthonous production coming from algae growth compared to allochthonous input from rainfall dominated in wet season. The concentration of DOC increased from upstream to downstream for the three rivers, especially Beirut River. The increase in DOC values was observed in both dry and wet seasons by 39 and 19 times respectively compared to upstream (0.93 - 0.91 mgC/L).

关键词： Dissolved Organic Matter DOM EEM Fluorescence Spectroscopy Autochthonous/Allochthonous DOM Urbanization Upstream/Downstream Wet/Dry Season

对电动汽车购买意愿的探索：考察外国人抵达中国后购买电动汽车意愿的影响因素

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对电动汽车购买意愿的探索：考察外国人抵达中国后购买电动汽车意...

作者： HUMBERT JEAN michel BERNARD 华东师范大学

学位级别：硕士

Human Eosinophil Cell Manipulation by Optical Tweezers

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Open Journal of Biophysics 2024年第3期14卷 330-338页

作者： Pavel Yale Jean michel Edouk.ua k.nin Abadê Ange-Boris N’guessan michel Abak. k.uacou Jérémie T. Zoueu Laboratoire dInstrumentation Image et Spectroscopie (L2IS) Institut National Polytechnique Houphout-Boigny (INPHB) Yamoussoukro Cte dIvoire Laboratoire de Chimie et de Physique Appliques Sciences et Techniques Universit Alassane Ouattara Bouak Cte dIvoire

In this work. lateral deformation of human eosinophil cell during the lateral indentation by an optically trapped microbead of diameter 4.5 µm is studied. The images were captured using a CCD camera and the Boltzmann statistics method was used for force calibration. Using the Hertz model, we calculated and compared the elastic moduli resulting from the lateral force, showing that the differences are important and the force should be considered. Besides the lateral component, the setup also allows us to examine the lateral cell-bead interaction. The mean values of the properties obtained, in particular the elastic stiffness and the shear stiffness, were Eh = (37.76 ± 2.85) µN/m and Gh = (12.57 ± 0.32) µN/m. These results show that the lateral indentation can therefore be used as a routine method for cell study, because it enabled us to manipulate the cell without contact with the laser.

关键词： Optical Tweezers Human Eosinophil Cell Indentation Shear Stiffness

Modelling of a WDM Network.Using Graph Theory and Dijk.tra Algorithm for Traffic Redirection

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Journal of Computer and Communications 2024年第7期12卷 78-93页

作者： Eric michel Deussom Djomadji Ebude Carine Awasume Eloundou Boris Donald Department of Electrical and Electronic Engineering College of Technology University of Buea Buea Cameroon Division of ICT National Advanced School of Post Telecommunication and ICT University of Yaounde I Yaounde Cameroon

Optical transport network. are now the basic infrastructure of modern communications systems, including the SDH and WDM back.one network.of local network.operators, in the case of Cameroon. Given the colossal investments required to deploy these network., particularly related to the cost of equipment (optical fibers, transponders and multiplexers), the optimization of bandwidth and dynamic allocation of resources is essential to control operating costs and ensure continuity of service. Automatic switching technology for optical network. brings intelligence to the control plane to fully facilitate bandwidth utilization, traffic redirection, and automatic configuration of end-to-end services. This paper considers a local network.operator’s WDM network.without the implementation of the automatic switching technology, develops a network.modeling software platform called Graphic Network. and using graph theory integrates a particularity of the automatic switching technology, which is the automatic rerouting of traffic in case of incident in the network. The incidents considered here are those link. or route failures and node failures.

关键词： Graph Theory Back.one Network WDM Djik.tra Algorithm

Chemical Composition of Pellonula leonensis Fish Oils from the Congo River Obtained by Soxhlet Extraction

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Open Journal of Applied Sciences 2024年第8期14卷 2112-2123页

作者： Bob Wilfrid Loumouamou Léa Béatrice Mambou Gadet michel Dzondo Multidisciplinary Food and Nutrition Research Team: Regional Center of Excellence in Food and Nutrition Faculty of Science and Technology Marien Ngouabi University Brazzaville Congo Process Engineering Laboratory UNESCO-ENSP Chair Marien Ngouabi University Brazzaville Congo Molecular and Sensory Food Engineering Laboratory National Polytechnic School (ENSP) Marien Ngouabi University Brazzaville Congo

The chemical composition of Pellonula leonensis fish oils from the Congo River (at Bok. city) was carried out. The fatty acids were determined by gas chromatography. The Sn-2 position of fatty acids on glycerol was carried out by the ISO 6800 standard. The separation of the compounds (as free fatty acids, monoglycerides, diglycerides, triglycerides, sterols and methyl esters, etc.) was carried out by HPLC using gel permeation with refractometric detection. The phospholipid composition was by HPLC with an evaporative light scattering detector. We obtained oil contents of 32.10 (±0.46)%. The major fatty acids were Palmitic acid (27.41%) and oleic acid (24.23%). The SFA were of 44.50%. The MUFA represent 32.54% and PUFA 22.60%. Regarding the Sn-2 position on glycerol, 48.0% were by SFA and 51.3% were by unsaturated fatty acids. Among them 34.2% of fatty acids were 17.5% oleic acid molecules, 3.3% DHA molecules and 2.1% EPA molecules. Free fatty acids have contents of more than 62%, Diglycerides 16.63% and triglycerides 20.46%. Seven different phospholipids were identified, namely: Phosphatidylglycerol (PG), Phosphatidylethanolamine (PE), Phosphatidylinositol (PI), Phosphatidylcholine (PC), Sphingomyelin (SM), Lyso Phosphatitdylcholine (LPC) and Lyso Phosphatidylethanolamine (LPE). According to the high levels in position 2 of the glycerol of palmitic acid, the consumption of Pellonula leonensis fish could be moderate.

关键词： Pellonula leonensis Fatty Acids Sn-2 Position Triacylglycerol Phospholopids

International Healthcare Terminologies for Morbidity New Era: SNOMED and ICD11

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Journal of Biosciences and Medicines 2024年第8期12卷 357-368页

作者： Jean Marie Rodrigues Constant k.ne michel Babri Béatrice Trombert Universit Jean Monnet Saint Etienne France Felix Houphout Boigny National Polytechnic Institute Yamoussoukro Cote dIvoire

The Information Technology (IT) developments have changed the use of Healthcare terminologies from paper-based mortality statistics with the WHO international classifications of diseases (ICD) to the IT-based morbidity implementations for instance for Casemix-based healthcare funding and managing systems. This higher level of granularity is worldwide spread under the umbrella of several national modifications named ICD10 XM. These developments have met the increased use of the International Clinical Reference Terminology named SNOMED. When the updating of WHO ICD10 to WHO ICD11 was decided a merging was envisaged and a WHO SNOMED CT common work.proposed a methodology to create a common formal ontology between the 11th version of the WHO International Classification of Diseases and Health Problems (ICD) and the most used in the world clinical terminology named Systematized Nomenclature of Human and Veterinary Medicine - Clinical Terms (SCT). The present work.follows this unachieved work.and aims to develop a SNOMED-based formal ontology for ICD11 chapter 1 using the textual definitions of ICD11 codes which is a completely new character of ICD and the ontology tools provided by SCT in the publicly available SNOMED Browser. There are two k.y results: the lexical alignment is complete and the ontology alignment is incomplete with the validated SNOMED concept model can be completed with not yet validated attributes and values of the SNOMED Compositional Grammar. The work.opens a new era for the seamless use of both international terminologies for morbidity for instance for DRG/Casemix and clinical management use. The main limitation is that it is restricted to 1 out of 26 chapters of ICD11.

关键词： Lexical Alignment Semantic Interoperability Ontology SNOMED Concept Model ICD-11 SNOMED CT

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桥梁长寿命设计理论综述

交通运输工程学报 2024年第3期24卷 1-24页

作者：刘永健刘江周绪红王壮孟俊苗赵鑫东 YANG Jian GHOSN michel 长安大学公路学院陕西西安710064 重庆大学土木工程学院重庆400045 AECOM 纽约纽约NY 101584 纽约城市大学土木工程学院纽约纽约NY 10031

为促进桥梁长寿命设计理论的发展,从桥梁服役寿命及其影响机理出发,总结了现有桥梁长寿命设计的研究现状和面临的主要问题,探讨了未来研究重点和方向。研究结果表明:现行各国规范根据桥梁重要性及其所在公路等级进行桥梁设计寿命的规定... 详细信息

为促进桥梁长寿命设计理论的发展,从桥梁服役寿命及其影响机理出发,总结了现有桥梁长寿命设计的研究现状和面临的主要问题,探讨了未来研究重点和方向。研究结果表明:现行各国规范根据桥梁重要性及其所在公路等级进行桥梁设计寿命的规定,多采用变寿命的设计思路,赋予不同功能、重要程度、更换难度的桥梁构、部件不同的设计寿命;桥梁的寿命取决于其在真实服役环境下的长期性能,包含环境侵蚀作用下的耐久性能、反复荷载作用下的疲劳性能和持续荷载作用下的徐变性能,受服役环境、养护干预和施工过程的影响显著;新建桥梁长寿命技术主要从设计方法和高性能材料展开研究,现有服役寿命和耐久性设计方法主要围绕环境作用、劣化机理、材料性能、施工控制和检查管理等方面,达到了“看似满足”的设计目标,尚未能实现概率水平提升和设计寿命量化,全寿命设计则还停留在理念层面,UHPC、耐候钢、FRP等高性能材料的应用是提升桥梁设计寿命的有效方式;未来应以“明确结构定位,完善性能指标体系,优化结构初始状态,改善服役微环境,控制劣化传递路径”为长寿命设计的基本框架,围绕桥梁结构的长寿基因识别与调控、桥梁微环境全寿命周期演化规律、桥梁服役寿命的全概率量化设计方法等基础理论开展研究,以建立系统的桥梁长寿命设计理论体系。

关键词：桥梁工程长寿命环境作用设计方法高性能材料

Photometric and Spectroscopic Study of Ten Low Mass Ratio Contact Binary Systems:Orbital Stability,O'Connell Effect and Infrared Calcium Line Filling

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Research in Astronomy and Astrophysics 2024年第8期24卷 212-222页

作者： Surjit S.Wadhwa Adam Popowicz Raúl michel Petar k.stić Oliver Vince Nick.F.H.Tothill Ain Y.De Horta Miroslav D.Filipović School of Science Western Sydney UniversityLocked Bag 1797PenrithNSW 2751Australia Department of Electronics Electrical Engineering and MicroelectronicsSilesian University of TechnologyAkademicka 1644120 GliwicePoland Instituto de Astronomía UNAM.A.P.87722800 EnsenadaBCMéxico Astronomical Observatory Volgina 711060 BelgradeSerbia

Low mass ratio contact binary systems are more lik.ly to have unstable orbits and potentially *** addition,such systems exhibit characteristics such as starspots and high energy emissions(UV)suggestive of chromospheric and magnetic *** curve modeling of ten contact binary systems is *** were found to be of extreme low mass ratio ranging from 0.122 to 0.24 and three were found to be potentially unstable and possible merger *** of the infrared calcium absorption lines is a mark.r of increased chromospheric *** use the available Large Sk. Area Multi-Object Fiber Spectroscopic Telescope spectra along with matched standard spectra(broadened for rotation)to measure the excess filling of the central core depression flux of the two main infrared calcium absorption linesλ8542 andλ*** find that all reported contact binaries have excess filling of the core flux in the infrared calcium *** of the systems reported were also observed by the Galaxy Evolution Explorer mission and we find that all three have features of excess ultraviolet emissions further adding evidence for increased chromospheric activity in low mass ratio contact *** of both orbital stability and absorption line filling is dependent on the determination of geometric and absolute parameters from light curve *** an insignificant number of contact binary light curves exhibit the O’Connell effect,usually attributed to *** discuss the inclusion of starspots in light curve solutions and how they influence the geometric and absolute parameters.

关键词： (stars)binaries eclipsing-techniques photometric-stars chromospheres

Management of Severely Malnourished Children Aged 6 - 59 Months Hospitalized in the Pediatric Ward of k.yanza Hospital/Burundi

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Open Journal of Pediatrics 2024年第1期14卷 11-21页

作者： michel Basek. Jonathan Niyuk.ri Alice Ndayishimiye Sedk. Az-Eddine Vestine Ntak.rutimana Department of Health Nutrition Doctoral School University of Burundi Bujumbura Burundi Food Science and Technology Research Center (CRSTA) Department of Food Science and Technology (STA) Faculty of Agronomy and Bioengineering (FABI) University of Burundi Bujumbura Burundi East African Institute of Nutritional Sciences Bujumbura Burundi Faculty of Medicine University of Burundi Bujumbura Burundi Department of Biology Semlalia Faculty of Science Cadi Ayyad University Marrakech Morocco Centre de recherche en sciences naturelles et environnementales Faculty of Science University of Burundi Bujumbura Burundi

The implementation of WHO guidelines has significantly reduced hospital mortality due to severe malnutrition. Nevertheless, severe acute malnutrition in children under five remains a major public health problem in all low-income countries and is little studied. The study aimed to assess the nutritional status and quality of management of severe acute malnutrition in children aged 06 to 59 months hospitalized in the pediatric ward of k.yanza Hospital. This is a prospective study with descriptive and analytical aims over 6 months from February 10 to July 9, 2023. All children aged 6 to 59 months admitted for severe acute malnutrition are included in this study. The results show that the most affected age group is 12 to 23 months (42.55%). Marasmus is the most common clinical form, at 70.2%. Housewives and mothers from rural areas are the most affected, with rates ranging from 69.14% to 91.49%. The study shows that the reasons for consultation are respectively: edema (29.78%), diarrhea (26.59%), vomiting (19.14%), and fever (14.89%). Dehydration and hypothermia were the main complications observed in 45.74% and 22.34% respectively. Medical treatment was provided by antibiotics (44.68%), artesunate (31.91%), and resomal (21.27%). Nutritional treatment consisted of F75 100% milk.and F100 100% milk. Pathologies observed were: anemia 38.29%, malaria 37.23%, urinary tract infection 12.7%, measles 11.7%. The national protocol for integrated management of acute malnutrition (PCIMA) was followed. This study shows that 72.3% of children were successfully treated, with 9.5% dropping out and dying, and 8.5% not responding. We found that malnutrition remains a public health problem, affecting mostly children aged 12 to 24 months. The main complications or pathologies associated with malnutrition are diarrhea, malaria, and fever, and the majority of children suffer from marasmus.

关键词： Severe Acute Malnutrition Child Burundi