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Occurrence and ecological risk assessment of pharmaceutical products in the Kadicha river in Lebanon

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Emerging Contaminants 2021年第1期7卷 196-203页

作者： Fatme Merhabi Elena Gomez Nancy Ariza Castro Helmieh amine David Rosain Jalal Halwani Helene Fenet Hydrosciences Montpellier IRDCNRSUniversity of MontpellierMontpellierFrance Water&Environment Science Laboratory Faculty of Public Health(FSP III)Lebanese UniversityTripoli1300Lebanon Escuela de Química Instituto Tecnologico de Costa RicaCartago 159-7050Costa Rica

Contamination of aquatic systems with pharmaceutical products represents a rising *** Kadicha river in Northern Lebanon is an illustrative example of a small Mediterranean river affected by rapid urbanization and population *** paper reports the first study on occurrence and ecological risk assessments on selected pharmaceuticals and their metabolites within the Kadicha *** this purpose,surface water samples were collected over two sampling campaigns from twelve sites impacted by urban,rural,and mixed land uses(residential and agricultural zones)within the Kadicha river *** the studied pharmaceuticals,six compounds(carbamazepine,diclofenac,acetaminophen,sulfamethoxazole,ofloxacin,and atenolol)were detected with detection frequencies and concentrations that vary according to the sampling *** was the most frequently detected compound and showed the highest concentrations(not detected-290 ng/L).The presence of pharmaceuticals carbamazepine,ofloxacin(not detected-190 ng/L),and atenolol(not detected-93 ng/L)was related to raw wastewater inputs in the water body,while the presence of sulfamethoxazole(not detected-23 ng/L)was associated with its usage in specific sites with livestock ***,the presence of acetaminophen(not detected-242 ng/L)and diclofenac(not detected-1055 ng/L)can be affected by their degradation properties in river *** highest concentrations were observed in the urbanized downstream area,while the lowest concentrations were within the rural upstream ***,the urbanized downstream area presents the highest potential risks for aquatic ***,ofloxacin may pose high ecotoxicological risks in this *** levels of contamination with pharmaceuticals do not exceed the concentrations reported in the ***,the levels of carbamazepine,diclofenac,and acetaminophen were more similar to sites receiving raw wastewaters,while the concentration levels of sulfamethoxazo

关键词： Kadicha river Pharmaceuticals Surface waters Wastewaters Potential risk Urbanization

A Facile Recovery Process for Cathodes from Spent Lithium Iron Phosphate Batteries by Using Oxalic Acid

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CSEE Journal of Power and Energy Systems 2018年第2期4卷 219-225页

作者： Li Li Jun Lu Longyu Zhai Xiaoxiao Zhang Larry Curtiss Yi Jin Feng Wu Renjie Chen Khalil amine School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Chemical Sciences and Engineering Division Argonne National LaboratoryIL 60439USA Material Science Division Argonne National LaboratoryIL 60439USA State Key Laboratory of Operation and Control of Renewable Energy and Storage Systems China Electric Power Research Institute.Beijing 100192China

A simplistic and novel leaching process is developed to dispose spent lithium iron phosphate(LiFePO_(4))*** this paper,oxalic acid is selected as a leaching reagent to recover lithium as a resource and remove phosphorus from LiFePO_(4) batteries,benefiting from its low natural *** physical properties of spent cathode materials(before leaching)and residues(after leaching)are identified by X-ray diffraction(XRD)and scanning electronic microscopy(SEM)with energy dispersive X-ray spectroscopy(EDS).The total amounts of Li and Fe are analyzed by inductively coupled plasma-atomic emission spectroscopy(ICP-AES).The process occurs under conditions of a 0.3 mol·L^(-1) oxalic acid concentration,a temperature of 80℃,a reaction time of 60 min and a solid/liquid ratio of 60 g·L^(-1).It can effectively precipitate92%ferrum in terms of FeC_(2)O_(4)·2H_(2)O from LiFePO4,with the leaching efficiency of Li achieving up to 98%.This method demonstrates a new strategy for dealing with spent lithium iron phosphate batteries with a low cost and low environmental impact.

关键词： Leaching oxalic acid precipitation spent lithium-ion batteries

Ecological Restoration of Forest Soils Case of the Forest “Aioun Branise” Saida Algeria

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Open Journal of Forestry 2014年第5期4卷 527-535页

作者： Borsali amine Habib Zadi Fatima Zohra University Dr Moulay Taher Saida Algéria University Aboubekr Belkaid Tlemcen Algéria

In order to preserve the environment, various treatment processes of wastewater discharges are used. Anaerobic digestion is part and allows among other things the production of sludge. The use of sewage sludge in semi arid, characterized by a binding climate, anthropozoogenic pressure and erosion, more increasingly important, is a solution for the restoration of degraded forest lands. In this study, the effect of an intake of composts from urban sewage sludge on soil quality has been studied in-situ soils degraded in semi arid area. The research followed in this work methodology is the first to evaluate the effectiveness of contribution of compost over time on the restoration of the physico-chemical quality of forest soils, then to evaluate the effectiveness of compost quality depending on the state of disturbance of the ecosystem to restore the chemical quality of these soils. Our results show a significant effect of sewage sludge on soil’s physical and chemical characters that have been processed. This effect was delivered by the holding capacity increase, ammonium ions, inorganic phosphorus, total nitrogen, the carbon and the organic matter in these soils. This research is to show that sewage sludge are rich in easily mineralizable organic matter and are supposed to be the most suitable for the restoration of soil most impacted by the antropozoogene action. These contributions would quickly revitalize these soils by labile resource inputs.

关键词： Forest Degraded Soil Residual Mud Spreading and Ecological Restoration

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阿尔及利亚足球历史发展研究

阿尔及利亚足球历史发展研究

作者： NOUIOUA amine 湖南大学

学位级别：硕士

足球是世界上最受欢迎的体育运动,并对国家的经济和社会产生影响。像其他国家一样,阿尔及利亚对发展足球事业感兴趣,并试图达到尽可能高的水平。这也是本学位论文讨论阿尔及利亚足球历史发展研究。本研究分为三个部分:导言、理论及应用... 详细信息

足球是世界上最受欢迎的体育运动,并对国家的经济和社会产生影响。像其他国家一样,阿尔及利亚对发展足球事业感兴趣,并试图达到尽可能高的水平。这也是本学位论文讨论阿尔及利亚足球历史发展研究。本研究分为三个部分:导言、理论及应用。导言中讨论了本课题的研究问题,即:“从阿尔及利亚足球的历史中获益,是否有助于其未来的发展?”从这个问题中,总结出以下部分问题:1.缺乏对运动员及教练员有价值的训练,是否会导致阿尔及利亚足球的衰落?2.现有法律法规是否足够保障阿尔及利亚足球的发展?3.阿尔及利亚足球衰落背后的主要原因之一,是缺乏真正的职业化吗?基于上述问题,作出本研究的假设:从过去的错误中学习与受益将有助于阿尔及利亚足球的发展。并据此作出以下分假设:4.遵循对运动员及教练员有价值的、最新的训练策略,有助于加强阿尔及利亚足球发展。5.法律的更新升级有助于阿尔及利亚足球事业的完善。6.阿尔及利亚足球发展的主要途径之一就是真正职业化的运用。理论分为3章:阿尔及利亚的足球发展,阿尔及利亚足球的法律法规及阿尔及利亚职业化的现状。在实践方面,基于本研究提出的假设,对一组具有代表性的运动员及教练员进行了问卷调查。对于其中问题的回答结果,进行了详细的分析阐述。总的说来,文中总结了阿尔及利亚足球衰落结果背后的几个原因。首先,缺乏有效的监督及对运动员、教练员进行最新训练策略。换句话说,缺乏足够的形成性训练课程,它以先进的现代科学方法为基础训练教练员,这种课程也与体育运动特别是足球的巨大发展相一致。其次,没有足够的法律和法规来管理足球事业。更确切地说,现行法律缺乏现代化,一些政党为了赚钱而利用法律漏洞,这不利于阿尔及利亚足球的发展,并且对其产生负面影响。因此,这些法律需要立即修改,助力于阿尔及利亚足球的发展。第三,俱乐部没有真正有效地运用职业化,阻碍了阿尔及利亚足球的发展。事实上,阿尔及利亚政府提供大量的补贴和庞大的体育设施,并将其归于俱乐部支配。然而,阿尔及利亚政府的努力还不够,这些俱乐部在管理方面不够专业,而且他们离真正的职业化还很远。

关键词：足球职业化足球历史阿尔及利亚足球历史足球法

DFB Fiber Laser Sensors

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DFB Fiber Laser Sensors

作者： amine TOUATI 哈尔滨工程大学

学位级别：硕士

分布式反馈（DFB）光纤激光器和分布式布拉格反射镜(DBR)光纤激光器由于其光频率的特性，可以用于传感领域，如应力传感、温度传感等，并可以替代被动式的光纤光栅（FBG）传感器。它们以其高性能和小体积成为极受欢迎的高精度装置。不... 详细信息

分布式反馈（DFB）光纤激光器和分布式布拉格反射镜(DBR)光纤激光器由于其光频率的特性，可以用于传感领域，如应力传感、温度传感等，并可以替代被动式的光纤光栅（FBG）传感器。它们以其高性能和小体积成为极受欢迎的高精度装置。不在传感位置附近使用光隔离器而采用远程泵浦及诊断是其急需解决的问题。通常的解决方案是使用光谱仪，或基于光纤干涉仪和相位调制的方法，或观测光纤激光器拍频。但是激光器中会收到由导光光纤末端反射回来的离散信号，这样，由导光光纤引起的瑞利背向散射就会传入到激光器中。人们试着消除分布式反馈光纤激光器和分布式布拉格反射镜光纤激光器中反馈信号的影响，因为反馈信号将会引入额外的强度和频率噪声。本文假设激光器器的反馈信号很弱，并经过仿真及实际实验得到验证。本文还对以DFB光纤激光器作为主传感器，同时使用马赫-泽德干涉仪（MZI）作为传感系统进行了测试。结果表明，该系统能够进行实时测量并有很好的稳定性。本文的研究重点是光纤激光器的传感系统以及光纤激光水听器系统。首先，对水听器的开发系统和应用进行了概述，并阐述了论文的研究目的和意义。其次，介绍了分布式光纤激光器的理论背景，并对速率方程进行了适当的假设、简化。再次，应用传递矩阵(TMM)等方法，对分布式光纤激光器进行了数值分析。同时利用分布式反馈光纤激光器作为声学传感器进行了实验，并对MZI和强度调制两种调制原理进行了结果分析。之后，介绍了弱反馈对DFB光纤激光器的影响，通过理论和数值分析以及模拟仿真，从不同方面对其进行了分析。最后，我们根据反馈信号给出了一种综合评价反馈式DFB光纤激光器的原理。同时也给出了弱反馈DFB光纤激光器的性能指标。性能包括基于弱反馈和强度调制的声学和振动测量。

关键词： DFB光纤激光器传感器声学传感传递矩阵法弱反馈瑞利背向散射振动测量水听器

浅析小额信贷机构授信流程——以Credit Mutuel du Senegal为例

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浅析小额信贷机构授信流程——以Credit Mutuel du Senegal为例

作者： amine GUEYE 华中师范大学

学位级别：硕士

本研究的目的是为Credit Mutuel du Senegal (CMS)建立授信程序,一方面明确客户如何从CMS获得贷款,另一方面建立授信程序和CMS信用标准之间的关系。本研究综合采用描述性和分析性研究方法,主要通过分析结构化问卷调查以获得对CMS授信程... 详细信息

本研究的目的是为Credit Mutuel du Senegal (CMS)建立授信程序,一方面明确客户如何从CMS获得贷款,另一方面建立授信程序和CMS信用标准之间的关系。本研究综合采用描述性和分析性研究方法,主要通过分析结构化问卷调查以获得对CMS授信程序一个深度了解。本研究共得到100受访者的有效样本。数据来源不仅包括通过问卷调查、访谈的一手数据,还包括通过互联网,期刊,教科书以及CMS文档搜集的二手数据。这项研究表明,CMS现存的授信过程中存在管理松弛问题,对CMS的小额信贷业务绩效产生负面影响。除此之外,本文还发现CMS的授信程序和不同的信用标准之间有很强的正相关关系。这意味着的授信程序的效率越高则贷款业务绩效水平越高。因此本文建议,应根据目标客户群的资信标准使用不同的信用管理程序来审查信贷申请,利率必须要减少并和申请人的生活水平相匹配以使他们能够获得信贷。同时也应明确界定担保条款,并根据不同信贷种类进行改善。CMS应为客户提供如何有效利用贷款的培训。除此之外,CMS还应该听取客户的要求,以有效地服务于客户的利益,在实现其自身目标的同时实现小额信贷的一般目标。通过以上措施将加强授信效率并同时有助于前述所有目标的实现。

关键词：授信程序小额贷款小额信贷机构

Agent Petri Nets Framework for Modeling Staphylococcus epidermidis Biofilm Formation

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E-Health Telecommunication Systems and Networks 2016年第1期5卷 19-30页

作者： Borhan Marzougui Kamel Barkaoui Mohamed amine Makni Information Technology Department ECT Abu Dhabi United Arab Emirates CNAM Paris France National Bone-Marrow Transplantation Center of Tunis Tunis Tunisia

This Staphylococcus epidermidis has been discovered as the most frequent germ detected during indwelling medical devices infection. This fact is well attached with the ability of this bacterium to form structured layered population known as biofilm. Inside S. epidermidis biofilm, bacterial cells present more different behavior than in their planktonic counterpart. This paper describes the thriving application of Petri net theory for modeling of interaction between different regulations actors leading S. epidermidis to switch from Planctonik to Biofilm. Indeed this biologic system is very sensible and has dangerous effect. We propose Agent Petri Nets model to describe and analyze the process of formation of Biofilm molecule. This model presents a formal framework based on Multi Agents system characteristics.

关键词： Staphylococcus epidermidis Biofilm Petri Net Modeling Agent

Large Adrenal Pseudocyst: A Case Report

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Surgical Science 2017年第5期8卷 197-202页

作者： Mohamed amine Azami Othman Lahbali Iliass El Alami El amine Ratbi Fouad Zouidia Najat Mahassini Department of Pathology University Hospital Ibn Sina Mohammed V University Rabat Morocco Department of Oncology Mohamed V Military Hospital Mohammed V University Rabat Morocco Department of Visceral Surgery University Hospital Ibn Sina Mohammed V University Rabat Morocco

Introduction: Cysts of the adrenal gland are rare and are usually discovered incidentally, typically presented with abdominal pain or palpable mass. There are four categories of adrenal gland cyst: epithelial, endothelial, parasitic and pseudocysts. We report the case of a 33-year-old woman who presented as a pain of the right hypochondrium and abdominal distention and was diagnosed with a large unilateral adrenal pseudocyst. Case presentation: A 33-year-old Moroccan woman followed for acute articular rheumatism for 3 years was admitted with left hypochondralgia and abdominal distention. Magnetic resonance imaging. (MRI) and abdominal computed tomography revealed a large left adrenal cyst mass measuring 19 cm. The patient underwent surgery, and the cyst was completely removed. Histological examination revealed an adrenal pseudocyst. Symptoms resolved after pseudocyst removal. Conclusion: Adrenal pseudocysts are uncommon. Symptoms are usually related to the size and local pressure effect of the cysts.

关键词： Adrenal Gland Cyst Pseudocyst Surgery

Energy-driven surface evolution in beta-MnO2 structures

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Nano Research 2018年第1期11卷 206-215页

作者： Wentao Yao Yifei Yuan Hasti Asayesh-Ardakani Zhennan Huang Fei Long Craig R. Friedrich1 Khalil amine Jun Lu Reza Shahbazian-Yassar1 Department of Mechanical Engineering-Engineering Mechanics Michigan Technological University Houghton Michigan 49931 USA Chemical Science and Engineering Division Argonne National Laboratory 9700 South Cass Avenue Argonne Illinois 60439 USA Department of Mechanical and Industrial Engineering The University of Illinois at Chicago Chicago Illinois 60607 USA

Exposed crystal facets directly affect the electrochemical/catalytic performance of MnO2 materials during their applications in supercapacitors, rechargeable batteries, and fuel cells. Currently, the facet-controlled synthesis of MnO2 is facing serious challenges due to the lack of an in-depth understanding of their surface evolution mechanisms. Here, combining aberration-corrected scanning transmission electron microscopy （STEM） and high-resolution TEM, we revealed a mutual energy-driven mechanism between beta-MnO2 nanowires and microstructures that dominated the evolution of the lateral facets in both structures. The evolution of the lateral surfaces followed the elimination of the {100} facets and increased the occupancy of {110} facets with the increase in hydrothermal retention time. Both self-growth and oriented attachment along their {100} facets were observed as two different ways to reduce the surface energies of the beta-MnO2 structures. High-density screw dislocations with the 1/2〈100〉 Burgers vector were generated consequently. The observed surface evolution phenomenon offers guidance for the facet-controlled growth of beta- MnO2 materials with high performances for its application in metal-air batteries, fuel cells, supercapacitors, etc.

关键词： manganese oxide facet evolution oriented attachment growth mechanism surface energy