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Evaluation of Mineral Elements Content of Senegal Fruits

Journal of Minerals and Materials Characterization and Engineering 2022年第2期10卷 163-173页

作者： rokhaya Sylla Gueye Jérôme Ledauphin Fabienne Baraud Lydia Leleyter Mélanie Lemoine rokhaya Gueye Adama Diedhiou Mamadou Balde Nango Gaye Matar Seck Djibril fall Alassane Wele Laboratoire de Chimie Physique Minérale Organique et Thérapeutique Université Cheikh Anta Diop (UCAD) Dakar Sénégal Unité de Recherche “Aliments Bioprocédés Toxicologie Environnement” Université de Caen Normandie Caen France Laboratoire de Chimie Analytique et Bromatologie (UCAD) Dakar Sénégal

This study determined mineral value and antioxidant activity of Senegal fruits for contributing to improving healthy diet and preventing some chronic diseases. Mineral element contents of Dialium guineense, Landolphia heudelotti, Mangifera indica, Cyperus esculentus and Saba senegalensis, which are widely available and consumed, were studied. The results by ICP-OES spectrophotometry after acid mineralization showed highest levels of (per 100 g fruits), calcium (158 mg), potassium (1018 mg), magnesium (532 mg), zinc (26 mg) with juice of Landolphia heudelotti fruit pulp. Mangifera indica pulp is richer in sodium (89 mg), phosphorus (556 mg), sulphur (384 mg) and silicon (110 mg). Dialium senegalensis pulp is richer in iron (23 mg) and manganese (19 mg). Lyophilized Cyperus esculentus rhizomes analyzed by atomic absorption spectrophotometry gave highest concentrations of (per 100 g fruits), calcium (2550 mg), potassium (11,843 mg) and magnesium (7669 mg) but sodium content (22 mg) is lower. In vitro antioxidant activity evaluation with the DPPH radical showed for 10 mg/ml concentration, highest inhibition percentage for Saba senegalensis 4.03%, followed by Landolphia heudelotti and Dialium guineense, which were significantly similar 2.29% and 2.20% respectively, Mangifera indica 1.7% and finally Cyperus esculentus 0.5%, but much lower compared to the ascorbic acid equal to 96.32% used as a reference.

关键词： Fruits Senegal Mineral Elements Antioxidant Activity

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Quality Improvement Project in Dairy Industry for the National Direction of Nutrition in Senegal:LABS Case

Quality Improvement Project in Dairy Industry for the Nation...

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作者： Marieme Amith fall 山东大学

学位级别：硕士

The turn of the millennium marked the advent of market globalization and financial *** are increasingly open to a global competition where factors contributing to competitiveness such as quality,performance and on-time delivery play a key *** and stakeholders around the world are demanding that the product or service for which they have paid meets their specifications,meets their expectations;and that it operates as *** is then seen as the ability to meet consumer expectations at a cost and price,both "acceptable" to the project or company,and to the customer but everything starts with a good project quality management *** ensure an annual per capita consumption of 40 liters of milk,Senegal spends nearly CFAF 53 billion to import dairy *** actions undertaken to develop the local dairy sector have not yet produced the expected *** are the problem Dairies,which the number has significantly increased since 2000,process quantities of local milk under artisanal conditions that do not always meet hygiene and sanitation *** improvement of the quality because of the poor quality of the local manufacturer became urgent to face competitiveness and face to the actual situation of the *** 1s project quality often neglected?Well,it’s hard to manage things we don’t understand but not *** quality seems to be an esoteric concept to many project *** subject has a real interest for us,as we found the necessity to contribute to the resolution of the *** study will enable the local manufacturer to understand the strategic element of better quality;its importance through the industry and also in the management of their future *** well to understand the importance of a strong quality management as the key of success not only for the industry but mostly affect the performance of their future project in *** other words,to demonstrate that the absence of a quality ma

关键词：乳品企业质量改进营养品质

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Physico-Chemical and Mineralogical Characterizations of Tchiky Clays (Thies, Senegal) for Pharmaceutical Uses

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Journal of Minerals and Materials Characterization and Engineering 2023年第2期11卷 36-48页

作者： rokhaya Sylla Gueye Nango Gaye Ousmane Ka Mamadou Baldé Adama Diedhiou Ngoné Diouf Samba F. Ndoye Idrissa Ndoye Yoro Tine rokhaya Gueye Mouhamadou B. Diop Matar Seck Djibril fall Alassane Welé Laboratory of Physical Mineral Organic and Therapeutic Chemistry Cheikh Anta Diop University (UCAD) Dakar Senegal Laboratory of Analytical Chemistry and Bromatology UCAD Dakar Senegal Laboratory of Geomaterials Institute of Earth Sciences UCAD Dakar Senegal

Our study focused on the valuation of Tchiky clays. This work aims to evaluate its properties to explore possible uses in pharmacy. Physico-chemical and mineralogical characterizations were carried out, as well as pharmacopoeial tests and an evaluation of the antioxidant activity. Thus, chemical analysis by X-ray fluorescence spectrometry gave silicon (55.65%), iron (15.73%), aluminum (13.53%), potassium (6.05%), titanium (3.98%), magnesium (2.10%), and calcium (0.82%). X-ray diffraction showed the presence of kaolinite, quartz and illite. This study also revealed that the sample studied was essentially a plastic clay of hard consistency, with average flowability. The evaluation of the antioxidant activity gave a percentage inhibition of 62.97% for a concentration of 7.5 g/l with an IC50 of 5.5 g/l. These results should allow use as an excipient in pharmacy, particularly in liquid, semi-liquid and pasty formulations.

关键词： Clays Tchiky Minerals Pharmacopoeia Antioxidant Activity

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Numerical investigation on self-priming process of self-priming pump

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排灌机械工程学报 2020年第11期38卷 1113-1118页

作者： fall Ibra PAN Zhongyong ZHANG Desheng DESMOND Appiah ALI Asad YANG Bo National Research Center of Pumps Jiangsu UniversityZhenjiangJiangsu 212013China

In order to investigate the self-priming process of the self-priming pump,an unsteady simulation was conducted where the Navier-Stokes equations were used with the Lagrangian-Eularian *** course of this investigation,the volume fractions,pressure distribution and self-priming time were carried *** analyzing the volume,velocity and pressure distribution of the gas-liquid two-phase flow at different time,the two-phase content via the variation law of the two-phase flow in the pump was carried *** monitoring and analyzing the gas-liquid flow at the outlet of the pump,the self-priming time and crucial periods were *** phenomena were mainly characterized by the self-priming process such as the gas-liquid mixing and separation,which occur in the early stage of self-priming *** that period the gas-liquid mixing clouds appear on the outer edge of the impeller,and the instantaneous void fraction at the inlet and outlet of the impeller decreases *** was also established from the transient study that the gas has a major influence on the hydraulic performance of the pump at the early stage of *** increase the usage of self-priming pump and to also understand the energy conversion of the pump,it is very essential to investigate and establish the basic working principle of the self-priming pump.

关键词： self-priming pump self-priming process numerical simulation

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Laser-induced graphitization of a forest-based ink for use in flexible and printed electronics

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npj Flexible Electronics 2020年第1期4卷 149-158页

作者： Jesper Edberg Robert Brooke Omid Hosseinaei Andreas fall Kosala Wijeratne Mats Sandberg RISE Bio-and Organic Electronics Bredgatan 3360221NorrköpingSweden RISE Bioeconomy Drottning Kristinas väg 6111428StockholmSweden

Laser-induced graphitization(LIG)is a method of converting a carbon-rich precursor into a highly conductive graphite-like carbon by laser *** method has shown great promise as a versatile and low-cost patterning *** we show for the first time how an ink based on cellulose and lignin can be patterned using screen printing followed by laser *** printing is one of the most commonly used manufacturing techniques of printed electronics,making this approach compatible with existing processing of various *** use of forest-based materials opens the possibility of producing green and sustainable ***-patterning of the ink enables carbon patterns without residual precursor between the *** investigated the effect of the ink composition,laser parameters,and additives on the conductivity and structure of the resulting carbon and could achieve low sheet resistance of 3.8Ωsq^(−1) and a high degree of *** demonstrated that the process is compatible with printed electronics and finally manufactured a humidity sensor which uses lignin as the sensing layer and graphitized lignin as the electrodes.

关键词： forest printing electronics

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Review of Research on Li-Ion Batteries Waste Management

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Open Journal of Inorganic Chemistry 2022年第2期12卷 19-38页

作者： rokhaya Sylla Gueye Nango Gaye Mamadou Baldé Adama Diedhiou Ngoné Diouf Seck Gorgui Awa Idrissa Ndoye Yoro Tine Matar Seck Djibril fall Alassane Wele Mahy Diaw Laboratory of Physical Inorganic Organic and Therapeutic Chemistry Faculty of Medicine Pharmacy and Odontology Cheikh Anta Diop Dakar University (UCAD) Dakar Senegal Gaston Berger Saint-Louis University (UGB) Saint-Louis Senegal Alioune Diop Bambey University (UADB) Bambey Senegal

Li-ion batteries (Libs) are a mature technology widely used for energy storage in various electronic devices. Nowadays, this technology has become a leading candidate for the portable electronics market and for electric vehicles due to its good performance. As a result, the demand for Libs containing critical metals, rare earth elements and precious metals is increasing day by day with the accelerated upgrades of consumer electronics, which promotes the supply risk of many mining resources. In addition, the problems associated with the production of end-of-life Lib are increasing on a global scale. Used Libs are e-waste containing significant levels of critical raw materials (such as Co, Li, Mn and Ni) along with harmful substances. Without proper management of Lib waste, these precious metals and toxic substances may end up in nature and cause environmental and public health problems. In order to preserve nature, ensure sustainable resource management and stimulate the circular economy, it has become crucial to properly manage and recycle end-of-life Li-ion batteries. By the way, conventional methods focusing on pyrometallurgical treatments combined with hydrometallurgical treatment are widely studied to recover design metals from Libs waste. It is in this context that we have conducted this bibliographic synthesis, focusing on the efficiency of the solvents employed and their competitiveness for a more environmentally friendly economic management. In this manuscript, recent leaching, solvent extraction, electrodeposition and precipitation strategies to recover precious metals from end-of-life Li-ion battery designs are reviewed and the evolution of these processes is discussed.

关键词： Libs Waste Leaching Extraction Rate Affinity Partition Coefficient

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Spatial-temporal distribution of neglected tropical diseases burdens in China from 2005 to 2020

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贫困所致传染病(英文) 2024年第5期13卷 39-52页

作者： Ouyang Hanqi Zhao Ziyu fall Ibrahima Socé Djirmay Amadou Garba Ohore Okugbe Ebiotubo Bergquist Robert Yang Guojing NHC Key Laboratory of Tropical Disease Control School of Tropical Medicine the First Affiliated Hospital Hainan Medical University Haikou Hainan China Global NTD Programme WHO Geneva Switzerland Ingerod Brastad Sweden

Background Out of the 21 neglected tropical diseases (NTDs) listed by the World Health Organization, 15 affect the People’s Republic of China. Despite significant achievements in controlling NTDs, comprehensive assessments of the disease burden based on actual case data and detailed information on spatial and temporal dynamics are still lacking. This study aims to assess the disease burden and spatial-temporal distribution of NTDs in China from 2005 to 2020, to provide a reference for the formulation of national health agendas in line with the global health agenda, and guide resource *** The number of cases and deaths of major NTDs in China from 2005 to 2020 were downloaded from the China Public Health Science Data Center (https://***/Share/***) of the Chinese Center for Disease Control and Prevention and relevant literatures. Simplified formulas for disability-adjusted life years (DALYs) helped estimate the years of life lost (YLLs), years lived with disability (YLDs), and total DALYs. Spatial autocor-relation analysis of the average NTDs burden data for the years 2005 to 2020 was evaluated using Moran’sI *** China’s overall NTDs burden decreased significantly, from 245,444.53 DALYs in 2005 to 18,984.34 DALYs in 2020, marking a reduction of 92.27%. In 2005, the DALYs caused by schistosomiasis and rabies represent a substantial proportion of the total disease burden, accounting for 65.37% and 34.43% respectively. In 2015, Hunan and Sichuan provinces had the highest diversity of NTDs, with 9 and 8 number of different NTDs reported respectively. And the highest disease burden was observed in Sichuan (242,683.46 DALYs), Xizang Zizhiqu (178,318.99 DALYs) and Guangdong (154,228.31 DALYs). The "high-high" clustering areas of NTDs were mainly in China’s central and southern regions, as identified by spatial autocorrelation *** China has made unremitting efforts in the prevention and control of NTDs, and t

关键词： Neglected tropical diseases Disability-adjusted life years Spatiotemporal People’s Republic of China

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Incidental Finding of a Fenestrated Vertebrobasilar Junction Aneurysm

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Forensic Medicine and Anatomy Research 2022年第2期10卷 44-49页

作者： Youssoupha Kassé Géraud Léra Akpo Ibrahima Niang Khadidiatou Diouf Ka rokhaya Diagne Ndèye Bigué Mar Khaoulah Talhaoui Aminata Mbaye Papa Malick Dibor Diouf Mame Coumba fall Sokhna BaDiop Radiology and Medical Imaging Department of FANN Hospital Dakar Senegal Neurology Department of FANN Hospital Dakar Senegal Anatomy Laboratory of Health Sciences Department of Iba Der Thiam University Thies Senegal

Basilar artery fenestration is a rare anatomical variation resulting from the failed fusion of the two vertebral arteries during embryonic life. In order of frequency, it is the second most common location of vascular fenestrations after the anterior communicating artery. Vertebrobasilar junction aneurysms are uncommon but often associated with basilar artery fenestration. We report the case of a fenestrated vertebrobasilar junction saccular aneurysm in a 57-year-old woman. The diagnosis was incidentally made on CT angiography which found the anatomical variant and the aneurysm. The radiological features illustrating this association are detailed here and a brief discussion of its pathogenesis and management was made. Vertebrobasilar junction aneurysms are rare and their presence should suggest an associated basilar fenestration.

关键词： Basilar Artery Fenestration Vertebrobasilar Aneurysm CT Brain Angiography

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Belt and Road Touches Senegal

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ChinAfrica 2017年第6期9卷 10-11页

作者： Abdoulaye fall

Senegal, like most other West African countries, is not an official partner of the Belt and Road Initiative. But according to Senegalese Ambassador to China, his country can still benefit from and contribute to the initiative that seeks to develop cooperation between all countries around the world. He sees this cooperation being not only political, but also commercial, financial, cultural and infrastructure- based. The following is an edited excerpt of his thoughts.

关键词： Belt and Road Touches Senegal

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市政排涝自吸泵启动过程气液两相流动及压力脉动分析

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江苏大学学报（自然科学版） 2020年第5期41卷 516-522页

作者：杨波潘中永 Ibra fall 江苏大学国家水泵及系统工程技术研究中心江苏镇江212013

为了探明自吸泵的自吸机理.以外混式自吸泵为研究对象,利用CFX仿真软件中的VOF(volume of fluid)两相流模型和k-ε湍流模型,并结合网格滑移技术进行自吸过程非稳态数值模拟,分析了不同时刻下泵内气液两相体积、液相速度、出口气体体积... 详细信息

为了探明自吸泵的自吸机理.以外混式自吸泵为研究对象,利用CFX仿真软件中的VOF(volume of fluid)两相流模型和k-ε湍流模型,并结合网格滑移技术进行自吸过程非稳态数值模拟,分析了不同时刻下泵内气液两相体积、液相速度、出口气体体积分数和压力的分布情况.同时改变非稳态模拟的时间步长及总时长,监测自吸过程叶轮及蜗壳内监测点的压力变化.结果表明:自吸泵的吸气与排气主要集中在启动过程的初期和中期,叶轮入口和泵出口的气体体积分数分别超过60%和75%;叶轮出口的气液混合带导致了叶轮出口到蜗壳内侧大片区域内的流动紊乱现象,降低了叶轮的做功能力,进而影响了泵的正常排气;叶轮监测点压力脉动幅值与距叶片工作面的大小有关,蜗壳内监测点压力脉动幅值与距叶轮外缘的大小有关.

关键词：自吸泵气液两相流非定常数值模拟压力脉动瞬时体积分数

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