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Health risk assessment of municipal solid waste incineration emissions based on regression analysis

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Eco-Environment & Health 2024年第3期3卷 338-346页

作者： Zhuoshi Huang Jicui Cui abdoulaye Boré Wenchao Ma Ziyi Zhang Zhi Qiao Ziyang Lou Johann Fellner School of Environmental Science and Engineering Tianjin UniversityTianjin 300072China Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province College of Ecology and EnvironmentHainan UniversityHaikou 570228China Offshore Environmental Technology&Services Limited Beijing 100027China Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery School of Environmental Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China Christian Doppler Laboratory for Anthropogenic Resource Institute for Water Quality and Resource ManagementTU WienKarlsplatz 13/2261040 ViennaAustria

This study examined the potential health risks posed by the operation of 96 waste-to-energy(WtE)plants in 30 cities in the Bohai Rim of *** a sophisticated simulation approach,the Weather Research and Forecasting(WRF)model coupled with the California Puff(CALPUFF)model,we obtained the spatial distribution of pollutants emitted by WtE plants in the *** indices(HI)and cancer risks(CR)were calculated for each plant using the United States Environmental Protection Agency's recommended *** results indicated that both HIs and CRs were generally low,with values below the accepted threshold of 1.0 and 1.0×10^(-6),***,the average HI and CR values for the entire study area were 2.95×10^(-3)and 3.43×10^(-7),***,some variability in these values was observed depending on the location and type of WtE plant.A thorough analysis of various parameters,such as waste composition,moisture content,and operating conditions,was conducted to identify the factors that influence the health risks associated with *** findings suggest that proper waste sorting and categorization,increased cost of construction,and elevated height of chimneys are effective strategies for reducing the health risks associated with ***,this study provides valuable insights into the potential health risks associated with WtE plants in the Bohai Rim region of *** findings can serve as useful guidelines for law enforcement wings and industry professionals seeking to minimize the risks associated with municipal solid waste(MSW)management and promote sustainable development.

关键词： Incineration WRF/CALPUFF Health risk assessment Ridge regression model MSW classification

Prevalence and Factors Associated with Positivity of Antinuclear Antibodies (ANA) Patterns, Native Anti-DNA and Extractable Nuclear Antigens (ENA) Antibodies: Experience from a Laboratory in Dakar

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Open Journal of Rheumatology and Autoimmune Diseases 2024年第1期14卷 26-36页

作者： Diop Abdou Diallo Thierno abdoulaye Ndiaye Babacar Mahou Chantal Diop Marième Gaye Dubrous Phillippe Seck abdoulaye Medical Biology Laboratory Pasteur Institute of Dakar Dakar Senegal Cheikh Anta Diop University of Dakar Dakar Senegal

Background: Diagnosis of autoimmune diseases (AID) is challenging, due to overlapping features with other non-immune disorders. Anti-nuclear antibodies (ANA) are sensitive screening tests but anti-deoxyribonucleic acid-antibody (anti-DNA), and anti-extractable nuclear antigens (anti-ENA) are specific for AIDs. We aimed to look at ANA patterns in our patients and correlated them with anti-ENA for proper interpretation and better patient management cost-effectively. Methods: A retrospective study was conducted over 1 year from January to December 2022 who were tested for ANA at biology medical laboratory of Pasteur Institute of Dakar. Anti-ENA and anti-DNA results were also analyzed for ANA-positive patients. Statistical analysis was performed using STATA 14.0, p Results: 216 patients were analyzed. Women predominated at 79.2% and mean age was 48 years [CI 95%, 46 - 50], with extremes of 10 and 89. Most represented age group was [41 - 60] with 38%. ANA was positive in 27 (12.5%) of patients, 59.2% of whom were strongly positive (titer of 1/1000, 1/3200 or 1/6400). The most common pattern was nuclear speckled, which was found in 77.8% of samples. Anti-ENA and anti-DNA positivity in ANA-positive patients was found respectively in 63% (17/27) and 1.4% (3/27) of the samples analyzed. Most commonly identified anti-ENA was anti-Sm 29.6%, anti-SSA 29.6%, anti-Ro-52 25.9%, anti-RNP 18.5% and anti-SSB 14.8% which was associated with speckled pattern. Association results indicated a significant relationship between both tests and between ANA titer in the anti-ENA- and ANA-positive patients (p 0.001). Conclusions: ANA, Anti-ENA and anti-DNA antibodies are essential for AIDS diagnosis. However, the testing repertoire should follow an algorithm comprising of clinical features, followed by ANA results with nuclear, mitotic, and cytoplasmic patterns, anti-ENA, and anti-DNA for a more meaningful, and cost-effective diagnostic approach.

关键词： Antinuclear Antibodies Extractable Nuclear antigen Autoimmune Disease Indirect Immunofluorescence

Chronic Hepatitis B Virus Infection: Biological Parameters in Patients Treated with Tenofovir Disoproxil Fumarate

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Open Journal of Gastroenterology 2024年第4期14卷 145-151页

作者： Sanra Déborah Sanogo Moussa Y. Dicko Lamine N’Diaye ousmane Diarra Drissa Katilé abdoulaye Maiga Ouatou Mallé Sabine Drabo Makan S. Tounkara Hourouma Sow Kadiatou Doumbia Anselme Konaté Moussa T. Diarra Hepato-Gastroenterology Department Centre Hospitalier Universitaire Du Point G Bamako Mali Hepato-Gastroenterology Department Gabriel Toure University Hospital Bamako Mali Hepato-Gastroenterology Unit Csref Commune V Bamako Mali

Chronic hepatitis B causes a liver disease characterized by inflammation of the liver parenchyma. The aim of this study was to investigate the evolution of biological parameters in patients treated with Tenofovir for chronic B infection at the Commune V referral health center in Bamako. We obtained a prevalence of 14.15%. The most represented age group was 31 - 40 years, with 36.8%. The sex ratio was 1.44 in favour of men. Viral load was undetectable after 18 months of treatment in 25 patients (42.37%). Tenofovir, the 1st-line drug in Mali, is effective on the biological parameters monitored in patients.

关键词： Viral Hepatitis B Tenofovir Biological Parameters

Practice of Glycemic Self-Monitoring in Diabetic Patients Followed at the Endocrinology Department of Donka University Hospital in Guinea

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Open Journal of Endocrine and Metabolic Diseases 2024年第2期14卷 33-38页

作者： Mamadou Dian Mamoudou Diallo Mamadou Mansour Diallo Mamadou Chérif Diallo Alpha Mamadou Diallo Kadija Dieng Abdoul Mazid Diallo Mody abdoulaye Barry Kadidiatou Bah El’Hadj Zainoul Bah Mamadou Alpha Diallo Ibrahima Condé ousmane Kourouma Amadou Kaké Diabetology Unit Labe Regional Hospital Labé Guinea Faculty of Health Sciences and Techniques Gamal Abdel Nasser University of Conakry Conakry Guinea Endocrinology and Diabetology Department of Donka University Hospital Conakry Guinea Pediatrics Department of Donka University Hospital Conakry Guinea

Diabetes is a chronic pathology whose evolution is marked by micro and macroangiopathic complications. Optimal management can prevent the onset of complications and improve patients’ quality of life. Objectives: To determine the frequency of self-monitoring of blood glucose and to describe the errors found during self-monitoring in diabetic patients followed at the Endocrinology Department of Donka University Hospital in Guinea. Materials and methods: Descriptive cross-sectional study carried out between August and September 2020 involving diabetic patients followed up at the Endocrinology and Diabetology Department of the Donka National Hospital, CHU Conakry. Results: A total of 301 patients were enrolled, with an average age of 44.24 ± 21.01 years. 64.12% were female. Type 2 diabetes predominated in 64% of cases. The mean duration of diabetes was 6.14 ± 4.67 years, and 75.08% of patients lived in urban areas. Patients were on insulin in 36.21% of cases, insulin and biguanides (26.25%), hypoglycemic sulfonamide and biguanides (19.27%) and biguanides in 18.27% of cases. The frequency of self-monitoring of blood glucose was 43%, and 38% of patients made errors, notably reusing lancets (60%), not checking the expiration date (55.65%) and not washing their hands (48%). Conclusion: This study shows that self-monitoring of blood glucose is not performed by the majority of patients. Numerous errors were identified during blood glucose testing. Continued therapeutic education on the use of blood glucose meters will help empower patients and improve their quality of life.

关键词： Self-Monitoring of Blood Glucose Diabetes Conakry University Hospital

Anal Pathologies: What Management at the Reference Health Center of Bamako’s Commune V?

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Open Journal of Gastroenterology 2024年第3期14卷 87-92页

作者： Sanra Déborah Sanogo Moussa Y. Dicko ousmane Diarra Abou A. Diarra Drissa Katilé abdoulaye Maiga Ouatou Mallé Sabine Drabo Makan S. Tounkara Hourouma Sow Kadiatou Doumbia Anselme Konaté Moussa T. Diarra Hepato-Gastroenterology Department CHU Point G Bamako Mali Service d’hépato-gastroentérologie CHU Gabriel Touré Bamako Mali Hepato-Gastroenterology Unit CSREF Commune V Bamako Mali

Anal pathologies are conditions affecting the anal margin and the anal canal. The aim of our study was to update data on anal diseases. Non-specific, it can reveal an emergency, a serious illness, a chronic disease or a benign condition. It was a prospective, descriptive and analytical study from April 2022 to March 2023, carried out in the hepato-gastroenterology unit of the Centre de Santé de Référence de la commune V du District de Bamako in Mali. Out of seven hundred and forty-nine (749) patients seen in consultation, 98 had anal pathology, i.e. a prevalence of 13.08%. The mean age was 40 ± 15.15 years and the sex ratio was 1.5. Hemorrhoidal disease and anal fissure were the most frequent pathologies in 66.4% and 24.4% of cases respectively. Medical treatment was initiated in 91.9% of patients with hemorrhoidal disease and 91.7% with anal fissure. Anal pathologies are common in young male patients. In our context, they are dominated by benign conditions.

关键词： Anal Pathologies Hemorrhoidal Disease Anal Fissure

Simulation and Performance Analysis of Six Types of Sun Tracker Approaches:A Comparative Analysis for Solar Concentrating Technology Application at Burkina Faso

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Journal of Energy and Power Engineering 2024年第1期18卷 1-8页

作者： Stanislas Sanfo Serge Dimitri Bazyomo Tizane Daho abdoulaye Ouedraogo Laboratoire de Physique et de Chimie de l’Environnement(LPCE) Departement de PhysiqueUnitéde Formation et de Recherche en Sciences Exactes et AppliquéesUniversitéJoseph KI-ZERBOOuagadougouBP 7021Burkina Faso Laboratory of Thermal and Renewable Energies Department of Physics Unit of Training and Research on Exact and Applied SciencesUniversity Joseph KI-ZERBOOuagadougouBP 7021Burkina Faso Laboratoire Recherche Développement(LARED) Universitéde OuahigouyaBurkina Faso

Modelization equations of six approaches for tracking the sun are recalled and used to evaluate the constraints and performances to which they lead *** geographical study case is taken for the specific latitude of 12 North that is a good matching with the location of the country of Burkina *** decisive periods were locally established in order to consider the different travels of the sun on sky during one *** work presents some technical data which facilitates the choice of sun tracking approaches with concern of a concentrator limits such as its angle of acceptance,its motion control card interpolation model,or its minimum irradiation level for energy conversion effectiveness.

关键词： Solar radiation sun tracker Burkina Faso experimental data

Comparative Study between Dielectric Properties and Compaction Parameters: Case Study on Three Laterite Quarries

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Open Journal of Geology 2024年第8期14卷 746-759页

作者： Cheikh Diallo Diene Sabou Sarr abdoulaye Cissé Mapathé Ndiaye Laboratoire de Gophysique UFR Sciences de lIngnieur University Iba Der Thiam Thies Senegal Laboratoire de Modlisation et de Mcanique des Sols UFR Sciences de lIngnieur University Iba Der Thiam Thies Senegal

This work studies the variability of the relationship between relative permittivity and compaction parameters as a function of certain geotechnical properties for different laterite types. This study allows to purpose the dielectric permittivity as a third compaction parameter allowing to obtain a non destructive control méthod. Preliminary studies on Diack laterite had shown a good correlation. Additional investigations are carried out to verify the possibility of generalizing this correlation to three new laterite careers: Ngoudiane, Yéba and Fandene. To proceed, particle size analysis, Atterberg limits, specific weight tests and compaction according to the modified Proctor test were performed on laterite samples. Using the radar method, experimental permittivities are determined for laterite samples by the point method of propagation times and confirmed by the diffraction hyperbole method. The geotechnical and radar data obtained allowed correlations between permittivity and water content on the one hand and between permittivity and dry density on the other. The results show that the maximum dry density as a function of permittivity corresponds with the optimum Proctor, which confirms the results previously obtained on Diack laterite.

关键词： Radar Laterite Moisture Content Dry Density Permittivity Geotechnical Properties

Improvement of Mechanical Qualities of Clay Material through Coconut Fiber Stabilization

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Materials Sciences and Applications 2024年第7期15卷 201-212页

作者： Boukaré Ouedraogo abdoulaye Compaore Moumouni Derra Kalifa Palm Dieudonné Joseph Bahiebo Laboratoire dEnergies Thermiques Renouvelables (LETRE) Universit Joseph KI-ZERBO Ouagadougou Burkina Faso Laboratoire Chimie Analytique de Physique Spatiale et Energtique Universit Norbert ZONGO Koudougou Burkina Faso Institute de Recherche en Sciences Appliques et Technologies (IRSAT/CNRST) Ouagadougou Burkina Faso Laboratoire de Matriaux et Environnement (LAME) Universit Joseph KI-ZERBO Ouagadougou Burkina Faso

The criticisms regularly formulated towards clay or soil, in general, are its weak mechanical qualities and low water quality. Therefore, it is necessary to find techniques to improve the properties of this material, which is widely used worldwide. Here, we propose stabilizing clay with coconut fiber as a solution to enhance its mechanical properties. To do this, we used an experimental method, first determining the geotechnical properties of the clay and then its mechanical properties. The geotechnical study using the Proctor Test revealed that the dry density of the clay is γb = 1.42 g/cm3, and its water content is W = 22.3%. By applying the rolling method, the Atterberg limits were determined: liquid limit Wl = 63.6, plastic limit Wp = 27.9, plasticity index Ip = 35.7, and consistency index Ic = 1.46. With 25 P = 35.7 1.3, according to the water classification, it falls into class A3ts. The mechanical part focused on compression and flexural strengths obtained using a PROETI hydraulic press. We obtained a flexural strength of 0.63 MPa for simple clay (BA);0.89 MPa for clay + 0.25% fiber (BAF1/4);1.68 MPa for clay + 0.5% fiber (BAF1/2);1.87 MPa for clay + 0.75% fiber (BAF3/4);and 3.91 MPa for clay + 1% fiber (BAF1). As for the compression strength, BA = 5.90 MPa, BAF1/4 = 6.395 MPa, BAF1/2 = 6.292 MPa, BAF3/4 = 6.065 MPa, and BAF1 = 5.423 MPa. The addition of fiber has thus improved the mechanical qualities of the simple clay. These stabilized bricks can be used for sustainable and bioclimatic construction, providing higher durability and good comfort.

关键词： Compression Strength Flexural Strength Coconut Fiber Clay Geotechnical Properties

Prevalence of Extended-Spectrum Beta-Lactamase-Producing Strains Isolated at Zinder National Hospital (ZNH) in 2021 and Their Antibiotic Susceptibility Profile

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