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C1C2 Wiring and Posttraumatic Atlantoaxial Dislocation: An Effective and Cheap Surgical Procedure in a Developing Country

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Surgical Science 2024年第5期15卷 357-370页

作者： Ibrahim Dao Massimiliano Visocchi Salah Sow John Jabang Ousmane Ouattara Astride Somda Abdoulaye Sanou Elie Dibloni Nassoum arsène tossou Narcisse Ouedraogo Frédéric Bako Massadiami Soulama Malick Diallo Patrick Wendpouiré Hamed Dakouré Department of neurosurgery University Hospital Souro Sanou Nazi Boni University Bobo Dioulasso Burkina Faso High Institute of Health Sciences Nazi Boni University Bobo Dioulasso Burkina Faso Military Hospital Colonel Major Tanguet Ouattara Bobo Dioulasso Burkina Faso Institute of neurosurgery Craniovertebral Junction Surgery Unit School of Medicine Catholic University Rome Italy Department of Radiology and Medical Imaging University Hospital Yalgado Ouedraogo Joseph Ki-Zerbo University Ouagadougou Burkina Faso Department of neurosurgery (Unit) Edward Francis Small Teaching Hospital Banjul Gambia Department of neurosurgery University Hospital Yalgado Ouedraogo Joseph Ki-Zerbo University Ouagadougou Burkina Faso Department of neurosurgery Military Hospital Capitaine Halassane Coulibaly Ouagadougou Burkina Faso Department of Orthopedic Surgery University Hospital Souro Sanou Nazi Boni University Bobo Dioulasso Burkina Faso

Objectives: Atlantoaxial dislocation remains a rare and serious condition with a high preoperative and postoperative morbidity and mortality. Its successful surgical management is still challenging and gratifying for neurosurgeons. Several technics have been described such as wiring, trans articular screwing, C1C2 screwing with plate and screw introduced by Goel et al., and modified by insertion of polyaxially screw and rod many years later by Harms. Unavailability and expensiveness of upper cervical spine instrumentation device led us to C1C2 Wiring resulting in a good outcome. Finally, a quadriplegic patient with a more comfortable financial condition had ordered devices from abroad and benefit for Goel and Harms screwing technique and improved dramatically from ASIA A to ASIA E. Material and methods: This is a retrospective study of patients managed in our department by a same neurosurgeon from January 2019 to April 2024. Results: We defined 6 men and 1 woman with an average age of 33 years. Unrestrained driver in a rollover motor vehicle accident was most common. Only one patient was neurologically intact on admission. neurovegetative disorders were noticed in one patient. Dislocation was associated to a fracture of the dens in two patients. Three patients have been successfully operated with remarkable outcome, mostly from ASIA A to E. Conclusion: C1C2 dislocation is a serious condition and C1C2 Wiring represents an effective and cheaper technic. Therefore, this technic should deserve consideration above all in low incomes countries when screwing devices are not available. Seatbelt should be demanded for motor vehicle drivers and passengers.

关键词： Superior Cervical Spine Dislocation Fracture Wiring Screwing neurovegetative Disorders

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Experimental Investigation of the Stability of the Performance Characteristics of a Photovoltaic Module in the Face of Environmental and Meteorological Factors

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Open Journal of Applied Sciences 2024年第2期14卷 589-608页

作者： Adingra Paul arsène Kouassi Siaka Touré Diakaridja Traoré Laboratoire des Sciences de la Matière de l’Environnement et de l’Energie Solaire (LASMES) Unité de Formation et de Recherche des Sciences des Structures de la Matière et Technologie (UFR-SSMT) Université Félix Houphou&#235t Boigny Abidjan C&#244te d’Ivoire

The explosive technological improvement of photovoltaic systems as well as the necessity of populations to come to less expensive energy sources, that have led to an implosion at the level of solar panel manufacturers. This causes a large flow of these equipments to developing countries where the need is high, without any quality control. That conducted an experimental investigation on the performance characteristics of a 250 wp monocrystalline silicon photovoltaic module in other to check the verification and quality control. Most of these PV panels which often have missing informations are manufactured and tested in places that are inadequate for our environmental and meteorological conditions. Also, their influences on the stability of internal parameters were evaluated in order to optimize their performance. The results obtained at maximum illumination (1000 w/m2) confirmed those produced by the manufacturer. The analysis of these characteristics showed that the illumination and the temperature (meteorological factors) influenced at most the stability of the internal characteristics of the module in the sense that the maximum power increased very rapidly beyond 750 w/m2 but a degradation of performance was accentuated for a temperature of the solar cells exceeding 50°C. The degradation coefficients were evaluated at -0.0864 V/°C for the voltage and at -1.6248 w/°C for the power. The 10° inclination angle of the solar panel proved to be ideal for optimizing overall efficiency in practical situations.

关键词： Renewables Energies Instruments Internal Parameters of Photovoltaic Panel Monocrystalline Photovoltaic Panel Solar Energy Production Energy Intermittence

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Numerical Models and Methods of Atmospheric Parameters Originating in the Formation of the Earth’s Climatic Cycle

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Atmospheric and Climate Sciences 2024年第2期14卷 277-286页

作者： Wend Dolean arsène Ilboudo Kassoum Yamba Windé Nongué Daniel Koumbem Issaka Ouédraogo Dé partement Energie Institut de Recherche en Sciences Appliqu&#233es et Technologies (IRSAT) Ouagadougou Burkina Faso Unité de Formation et de Recherche en Sciences Exactes et Appliqu&#233es Universit&#233 Joseph KI-ZERBO Ouagadougou Burkina Faso

Atmospheric models are physical equations based on the ideal gas law. Applied to the atmosphere, this law yields equations for water, vapor (gas), ice, air, humidity, dryness, fire, and heat, thus defining the model of key atmospheric parameters. The distribution of these parameters across the entire planet Earth is the origin of the formation of the climatic cycle, which is a normal climatic variation. To do this, the Earth is divided into eight (8) parts according to the number of key parameters to be defined in a physical representation of the model. Following this distribution, numerical models calculate the constants for the formation of water, vapor, ice, dryness, thermal energy (fire), heat, air, and humidity. These models vary in complexity depending on the indirect trigonometric direction and simplicity in the sum of neighboring models. Note that the constants obtained from the equations yield 275.156˚K (2.006˚C) for water, 273.1596˚K (0.00963˚C) for vapor, 273.1633˚K (0.0133˚C) for ice, 0.00365 in/s for atmospheric dryness, 1.996 in2/s for humidity, 2.993 in2/s for air, 1 J for thermal energy of fire, and 0.9963 J for heat. In summary, this study aims to define the main parameters and natural phenomena contributing to the modification of planetary climate. .

关键词： Atmospheric Parameter 1 Climatic Cycle 2 Numerical Models 3

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Ambulatory Radio Iodine Therapy in the Management of Hyperthyroidism in Africa: African Systematic Review and Perspectives in Burkina Faso

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Open Journal of Biophysics 2024年第1期14卷 1-10页

作者： Ki Thierry Romuald Mamadou Salif Djigo Gora Thiaw arsène Sanou Mamounata Zoungrana Mamadou Mbodj Nuclear Medicine Department of the Yalgado OUEDRAOGO University Hospital Center in Ouagadougou Ouagadougou Burkina Faso Biophysics and Nuclear Medicine Laboratory of the Cheikh Anta DIOP University of Dakar Dakar Senegal Radiology Departement of the Bobo Dioulasso University Hospital Center in Bobo Dioulasso Bobo Dioulasso Burkina Faso

Introduction: In hyperthyroidism, selective irradiation of the thyroid gland with radioactive iodine is a radical treatment and an alternative to surgery. The aim of this review is to assess the medium-term efficacy of outpatient treatment of hyperthyroidism with iodine-131 in Africa. Methods: We identified the studies carried out in Africa on outpatient radiation therapy between 2016 and 2020. For each article included, we noted the country concerned and the year of publication, the numbers studied, the socio-demographic characteristics of the patients, the indications for radio iodine therapy, the dose administered, the results of the hormonal dosage 6 months after radiation. Results: 13 retrospective studies were included to constitute a total population of 925 patients. The average age was 40.77 years, the sex ratio of 1/5.4 with a clear female predominance. The 3 main etiologies of hyperthyroidism justifying outpatient radio iodine therapy were Graves’ disease (55.89%), toxic multinodular goiter (22.70%) and toxic adenoma (21.40%). The average dose of iodine 131 administered per course is 13.7 mCi. No short-and medium-term complications were reported. The radio iodine therapy was effective in 86.08% (n = 796) of the patients with extremes of 72% and 100%. Conclusion: Radio iodine therapy is effective in Africa. It is simple, inexpensive on an outpatient basis and well tolerated. The introduction of outpatient radio iodine therapy could improve the management of patients with hyperthyroidism in Burkina Faso.

关键词： Hyperthyroidism Outpatient Radio Iodine Therapy Africa

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Frontal Sinus Fractures: Management at the Yalgado Ouedraogo University Hospital Centre (Burkina Faso)

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Open Journal of Stomatology 2024年第1期14卷 42-54页

作者： arsène Coulibaly Patrik Gane-Bang Joseph Wend-Toin Biogo Ibraïma Traoré Tarcissus Konsem Department of Maxillofacial Surgery Regional University Hospital Centre of Ouahigouya Ouahigouya Burkina Faso Department of Stomatology and Maxillofacial Surgery Regional Hospital Centre of Banfora Banfora Burkina Faso Department of neurosurgery Regional University Hospital Centre of Ouahigouya Ouahigouya Burkina Faso Department of Stomatology and Maxillofacial Surgery Souro SANOU University Hospital Centre Bobo Dioulasso Burkina Faso Department of Stomatology and Maxillofacial Surgery Yalgado OUEDRAOGO University Hospital Centre Ouagadougou Burkina Faso

Introduction: Frontal sinus fractures are potentially serious. They are defined as a solution of continuity, open or closed, of one or both bone tables of the frontal sinus. This study aims to report on the management of them at the Yalgado OUEDRAOGO University Hospital Centre. Methodology: It is a descriptive cross-sectional study with retrospective collection from January 01, 2016 to December 31, 2018. Patients with frontal sinus fractures were managed at the Yalgado OUEDRAOGO University Hospital Centre through CT-scan proof. Results: Over three years, a total of 102 cases of frontal sinus fractures were collected with 29.9 years as average age. There were 96 men. Workers in the informal sector and pupils/students represented 58.90% of patients. The residence of the patients was urban in 68.80% of cases and rural in 31.40%. Road traffic accidents (RTAs) happened in 90.20%, and involved 2-wheelers in 98.20%. None of these drivers was wearing a helmet. The type III frontal fracture of Ioannides et al. represented 51.9% of cases. In 89.21% of cases, other facial and/or cranioencephalic injuries were compounded to frontal sinus fractures. No surgical management was observed in 82 (80.39%) patients and surgical management in 20 (19.61%) patients. The outcome was favourable, but sequelae and/or complications were noted in 10 patients who had surgery and 30 patients who did not. Conclusion: These results enforce helmet wearing for all riders of two-wheeled machines. In addition, vaccinations to prevent meningitis in frontal sinus fractures with dural breach should be systematic.

关键词： Management Frontal Sinus Fracture Burkina Faso

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A Systematic Review of Computer Vision Techniques for Quality Control in End-of-Line Visual Inspection of Antenna Parts

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Computers, Materials & Continua 2024年第8期80卷 2387-2421页

作者： Zia Ullah Lin Qi E.J.Solteiro Pires arsénio Reis Ricardo Rodrigues Nunes School of Electrical and Information Engineering Zhengzhou UniversityZhengzhou450001China School of Science and Technology Universidade de Trás-os-Montes e Alto DouroVila Real5000-801Portugal

The rapid evolution of wireless communication technologies has underscored the critical role of antennas in ensuring seamless *** defects,ranging from manufacturing imperfections to environmental wear,pose significant challenges to the reliability and performance of communication *** review paper navigates the landscape of antenna defect detection,emphasizing the need for a nuanced understanding of various defect types and the associated challenges in visual *** review paper serves as a valuable resource for researchers,engineers,and practitioners engaged in the design and maintenance of communication *** insights presented here pave the way for enhanced reliability in antenna systems through targeted defect detection *** this study,a comprehensive literature analysis on computer vision algorithms that are employed in end-of-line visual inspection of antenna parts is *** PRISMA principles will be followed throughout the review,and its goals are to provide a summary of recent research,identify relevant computer vision techniques,and evaluate how effective these techniques are in discovering defects during *** contains articles from scholarly journals as well as papers presented at conferences up until June *** research utilized search phrases that were relevant,and papers were chosen based on whether or not they met certain inclusion and exclusion *** this study,several different computer vision approaches,such as feature extraction and defect classification,are broken down and ***,their applicability and performance are *** review highlights the significance of utilizing a wide variety of datasets and measurement *** findings of this study add to the existing body of knowledge and point researchers in the direction of promising new areas of investigation,such as real-time inspection systems and multispectral *** review,on its whole,of

关键词： Computer vision end-of-line visual inspection of antenna parts machine learning algorithms image processing techniques deep learning models

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Analysis of Modeling the Influence of Electromagnetic Fields Radiated by Industrial Static Converters and Impacts on Operators Using Maxwell’s Equations

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Open Journal of Applied Sciences 2024年第8期14卷 2320-2350页

作者： Anthony Bassesuka Sandoka Nzao Tuka Biaba Samuel Garcia Obed Bitala arsène Kasereka Kibwana Emmanuel Ndaye Kibuayi ISTA Kinshasa Electrical Engineering Kinshasa Democratic Republic of Congo Doctoral School of ISTA Kinshasa Complementary Master in Science and Technology/Electrical Engineering Electrotechnical Option Kinshasa Democratic Republic of Congo ISTA Kinshasa Doctoral School in Science and Technology Electronics Option Kinshasa Democratic Republic of Congo

The study of Electromagnetic Compatibility is essential to ensure the harmonious operation of electronic equipment in a shared environment. The basic principles of Electromagnetic Compatibility focus on the ability of devices to withstand electromagnetic disturbances and not produce disturbances that could affect other systems. Imperceptible in most work situations, electromagnetic fields can, beyond certain thresholds, have effects on human health. The objective of the present article is focused on the modeling analysis of the influence of geometric parameters of industrial static converters radiated electromagnetic fields using Maxwell’s equations. To do this we used the analytical formalism for calculating the electromagnetic field emitted by a filiform conductor, to model the electromagnetic radiation of this device in the spatio-temporal domain. The interactions of electromagnetic waves with human bodies are complex and depend on several factors linked to the characteristics of the incident wave. To model these interactions, we implemented the physical laws of electromagnetic wave propagation based on Maxwell’s and bio-heat equations to obtain consistent results. These obtained models allowed us to evaluate the spatial profile of induced current and temperature of biological tissue during exposure to electromagnetic waves generated by this system. The simulation 2D results obtained from computer tools show that the temperature variation and current induced by the electromagnetic field can have a very significant influence on the life of biological tissue. The paper provides a comprehensive analysis using advanced mathematical models to evaluate the influence of electromagnetic fields. The findings have direct implications for workplace safety, potentially influencing standards and regulations concerning electromagnetic exposure in industrial settings.

关键词： Modeling Electromagnetic Field Power Converters Geometric Parameters Biological Tissue Maxwell Equation Bio-Heat Equation Thermal Model

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Mercury Levels Assessment in the Population of Aby and Frambo Villages in the Vinicity of Aby Lagoon in Côte d’Ivoire (West Africa)

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Journal of Water Resource and Protection 2024年第3期16卷 219-232页

作者： Stéphane Jean Claon Serge Kouakou Kouassi Nina Laurette Ahouéfa Laurent Kipré Seri arsène M’bassidjé Seka Joseph Allico Djaman Luc Kouakou Kouadio Analytical Sciences and Public Health Department University of Félix Houphou&eumlt-Boigny Abidjan C&ocircte d'Ivoire Water Quality Control and Analysis Laboratory (LACQUE) Office National de l’Eau Potable (ONEP) Abidjan C&ocircte d’Ivoire Biology and Health Laboratory University of Félix Houphou&eumlt-Boigny Abidjan C&ocircte d’Ivoire Laboratory of Nutrition and Food Safety Department of Science and Food Technology Nangui Abrogoua University Abidjan C&ocircte d'Ivoire Department of Medical and Fundamental Biochemistry Institut Pasteur of C&ocircte d'Ivoire Abidjan C&ocircte d’Ivoire Laboratory of Environmental Sciences (LSE) University of Nangui Abrogoua Abidjan C&ocircte d’Ivoire

The Minamata Convention in the aim to protect human life and the environment, seeks to reduce mercury (Hg) by monitoring it concentrations in the environment. Artisanal and Small-scale Gold Mining (ASGM) has been identified as the most important anthropogenic source of human exposure to Hg. In this context, the main goal of this study was to assess the level of mercury in hair of two (2) populations living along two lagoons respectively Aby and Tendo, in Ivory Coast. To reach this goal, hair samples of 138 residents were collected and analyzed by using Cold Vapor Atomic Fluorescence Spectrophotometry (CV-AFS) technique for mercury concentration. Results showed that for the entire population the Hg mean was 2.34 μg/g. Also, they were ranged between 0.15 to 8.53 μg/g and presented substantial differences amongst the villages. In Aby village, we observed the highest Hg concentrations (Mean = 2.62 μg/g). Our findings showed that almost the entire sample group (82%) exceed the USEPA recommended limit, furthermore 56% of them exceed the normal level of WHO and 2% of the respondent has the unhealthy levels of mercury (≥6 μg Hg/g) of hair by WHO standards. Gender differences in hair mercury varies greatly among reports. Lower levels in women’s hair compared to men were reported in the both village. Considering age, the lowest concentrations were observed with children. However, when we take in account the age groups, data suggested that the most exposed sub-population of [18-29] years old is from Aby village in opposite at Frambo village, the same case those who were ≥ 40 years old. It’s convenient to note that, the proportion of Mercury levels would not to be neglected among studied population especially with the resident from Aby village. So, some measures need to be taken at the political level to control mercury contamination.

关键词： Mercury Hair ASGM Population Exposure Côte d’Ivoire

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Economic Stress, Precariousness and Risk of High Blood Pressure: A Descriptive Survey of Life Models within Households of the Central Region of Cameroon

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Health 2024年第2期16卷 118-130页

作者： Jean Ndibi Abanda Ulrich Dama Viviane Foussouo Ndoungue Anicet Onana Akoa Melkior Fobasso Dzeuta Alphonse Tedonge Asobochia arsène Emilien Messi Ndzengue Désiré Tchoffo Faculty of Health Sciences University of Lisala (CIREP-UNILIS) Lisala Democratic Republic of the Congo National Order of Medical and Sanitary Professions Yaoundé Cameroon School of Health Sciences Catholic University of Central Africa Yaoundé Cameroon World Health Organization Maroua Cameroon Faculty of Health Sciences University of Montagnes Banganté Cameroun Faculty of Medicine University of Bamenda Bamenda Cameroon Faculty of Sciences University of Ebolowa Ebolowa Cameroun

Context/Objective: High blood pressure (HBP) currently represents the most widespread chronic non-communicable disease in Cameroon. The increase in its prevalence in the country is the result of multiple factors including economic stress imposed by precariousness, poor living conditions, sources of anxiety, anguish, depression and other behavioral disorders. Economic stress is a globalizing concept that integrates into a purely hermeneutic approach, a particular functioning of the nervous system of an individual who faces employment problems and precarious remuneration conditions. The non-satisfaction by an individual of his basic needs due to insufficient financial means can cause him to become irritable, aggressive, and socially and symbolically isolated, thereby increasing the desire to resort to morbid life models such as excessive consumption of narcotics and other psychoactive substances often associated with high blood pressure. The fight against the emergence of BPH is a complex, multifaceted and multifactorial reality that requires taking into account economic stress. The main objective of this survey is to describe the situation of economic stress within the Cameroonian population, which imposes precariousness and life models at risk of high blood pressure. Specifically, we determined the level of household income and the sources of income. Methods: A cross-sectional survey with a descriptive aim among five hundred households in the Central Region of Cameroon was conducted. A probabilistic technique called simple randomness was used. The number of households to be surveyed was determined indirectly using the Cochrane formula. Data collection in face-to-face mode using a physical questionnaire took place from July 1 to August 31, 2023, after obtaining ethical clearance from the Regional Health Research Ethics Committee, Human from the Center and an administrative authorization for data collection. Regarding their processing, the data was grouped during proc

关键词： Economic Stress Precariousness High Blood Pressure Life Models Households

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Assessment of Selenium Contamination in Sediments of the Aby and Tendo Lagoons in Côte d’Ivoire

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International Journal of Geosciences 2024年第4期15卷 334-349页

作者： Stéphane Jean Claon Kouakou Serge Kouassi Kossonou Roland N’Guettia M’bassidjé arsène Seka Guei Jokebed Dakouo Allico Joseph Djaman Kouakou Luc Kouadio Analytical Sciences and Public Health Department University of F&#233lix Houphou&#235t-Boigny Abidjan C&#244te d&#8217Ivoire Water Quality Control and Analysis Laboratory (LACQUE) Office National de l&#8217Eau Potable (ONEP) Abidjan C&#244te d&#8217Ivoire Biology and Health Laboratory University of F&#233lix Houphou&#235t-Boigny Abidjan C&#244te d&#8217Ivoire Laboratory of Environmental Sciences (LSE) University of Nangui Abrogoua Abidjan C&#244te d&#8217Ivoire Department of Medical and Fundamental Biochemistry Institut Pasteur of C&#244te d&#8217Ivoire Abidjan C&#244te d&#8217Ivoire

Selenium is a trace element that can have both beneficial and harmful effects on aquatic life. The Aby Lagoon is a coastal environment in Côte d’Ivoire that receives selenium inputs from various natural and anthropogenic sources. The aim of this study was to assess the levels of selenium in the sediments of the Aby Lagoon and its tributaries, the Tanoe River and the Tendo Lagoon, and to examine the spatial and seasonal variations of selenium concentrations. Sediment samples were collected from different sites and seasons, and selenium concentrations were measured by atomic fluorescence spectrometry. The results showed that the average concentration of selenium in the sediments of the Aby Lagoon was 0.82 mg/kg, indicating moderate contamination. The concentration of selenium varied between sites and seasons, with higher values in the channel of the Tendo Lagoon and during the dry season. The study highlighted the complexity of selenium dynamics in aquatic ecosystems, and the need to take into account seasonal and spatial variability as well as interactions between environmental factors. The study also suggested potential ecotoxicological risks for some sensitive organisms in certain areas of the lagoon. This study contributes to the knowledge of the dynamics of selenium in lagoon ecosystems and to the assessment of the environmental risks associated with its presence.

关键词： Tropical Estuarine Selenium Sediments Aby Lagoon Seasonal Distribution

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