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Promotion effects of alkali metals on iron molybdate catalysts for CO_(2)catalytic hydrogenation

Journal of Energy Chemistry 2023年第10期85卷 291-300,I0009页

作者： Yong Zhou aliou sadia traore Deizi V.Peron Alan J.Barrios Sergei A.Chernyak Massimo Corda Olga V.Safonova Achim Iulian Dugulan Ovidiu Ersen Mirella Virginie Vitaly V.Ordomsky Andrei Y.Khodakov University of Lille CNRSCentrale LilleUniversity of ArtoisUMR 8181-UCCS-Unitéde Catalyse et Chimie du SolideLille F-59000France IPCMS UMR 7504 CNRSUniversitéde Strasbourg23 rue du LoessBP 43Cedex 267034 StrasbourgFrance PSI CH-5232 VilligenSwitzerland Fundamental Aspects of Materials and Energy Group Delft University of TechnologyMekelweg 15Delft 2629 JBNetherlands

CO_(2)hydrogenation is an attractive way to store and utilize carbon dioxide generated by industrial processes,as well as to produce valuable chemicals from renewable and abundant *** catalysts are commonly used for the hydrogenation of carbon oxides to ***-molybdenum catalysts have found numerous applications in catalysis,but have been never evaluated in the CO_(2)*** this work,the structural properties of iron-molybdenum catalysts without and with a promoting alkali metal(Li,Na,K,Rb,or Cs)were characterized using X-ray diffraction,hydrogen temperatureprogrammed reduction,CO_(2)temperature-programmed desorption,in-situ^(57)Fe Mossbauer spectroscopy and operando X-ray adsorption *** catalytic performance was evaluated in the CO_(2)*** the reaction conditions,the catalysts undergo the formation of an iron(Ⅱ)molybdate structure,accompanied by a partial reduction of molybdenum and carbidization of *** rate of CO_(2)conversion and product selectivity strongly depend on the promoting alkali metals,and electronegativity was identified as an important factor affecting the catalytic *** CO_(2)conversion rates were observed with the promoters having higher electronegativity,while low electronegativity of alkali metals favors higher light olefin selectivity.

关键词： CO_(2)utilization Iron molybdate catalysts Promotion Alkali metals Light olefins In-situ characterization

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Blood Glucose Measurement in Diabetic Patients Undergoing Comparative Treatment with a Medicinal Plant

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Journal of Biomedical Science and Engineering 2024年第11期17卷 234-255页

作者： Fatoumata Bah Azonwakin Rodrigue Akotegnon Cé Camara Ousmane Sangare Elhadji Saidou Balde Mohamed Sahar traore aliou Mamadou Balde Biology Laboratory Department of Biology Faculty of Sciences Gamal Abdel Nasser University Conakry Guinea Higher School of Tourism and Hospitality of Guinea Conakry Guinea Faculty of Pharmaceutical and Medical Sciences Gamal Abdel Nasser University Conakry Guinea

The management of non-communicable chronic diseases such as diabetes and hypertension remains a concern in developing countries. In Guinea, whether by choice or necessity, traditional medicine and herbal remedies are the primary recourse for the population, both in rural and urban areas. Previous investigations led to the development of two phytomedicines designed for managing essential hypertension (HTN) and type 2 diabetes (DT2), named “Guinex-HTN®” and “Sattagas.” An evaluation of their therapeutic benefits was conducted during a prevalence survey carried out in Dubréka. This survey revealed a prevalence of 73.52% (211/287) for HTN, 36.58% (105/287) for DT2, and 33.45% (96/287) for combined DT2/HTN. The therapeutic potential of Sattagas and the combination of Sattagas with Guinex-HTN were assessed in diabetic and hypertensive diabetic patients, respectively. Comparisons were made between Sattagas, Metformin, Sattagas plus Metformin, and Sattagas plus Guinex-HTN regarding their impact on blood glucose levels and/or blood pressure values. After 6 months of treatment with 2 x 2 capsules per day, the anti-diabetic potential of Sattagas was confirmed by a significant reduction in blood glucose levels (from 2.59 ± 0.43 to 1.22 ± 0.43) in 80.95% (85/105) of patients, as well as a significant decrease in blood pressure values (from 177 ± 20.77/98 ± 10.70 to 149 ± 29.02/85 ± 13.64) in 90.16% (55/61) of hypertensive diabetics. The anti-diabetic effect of Sattagas (from 2.19 ± 0.29 to 1.22 ± 0.31 g/l) was similar to that of Metformin (from 2.14 ± 0.23 to 1.28 ± 0.41 g/l), and a synergistic effect was observed when Sattagas was combined with Metformin (from 2.21 ± 0.49 to 1.10 ± 0.20 g/l). In hypertensive diabetics, the combination of Sattagas and Guinex-HTN demonstrated a beneficial effect on blood pressure values. Except for some symptoms (epigastric pain, nausea, diarrhea, drowsiness, fatigue) reported in 17 out of 103 patients that did not interfere with the continuation

关键词： Hypertension Diabetes Clinical Trial Urban Area Dubréka

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Osler’s Subacute Infective Endocarditis on Rheumatic Heart: A Complicated Clinical Case That Reflects Four (4) Major Public Health Issues in Sub-Saharan Africa

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Case Reports in Clinical Medicine 2022年第12期11卷 507-519页

作者： Pêngd-Wendé Habib Boussé traore aliou Alassane Ngaide aliou Alassane Ngaide Jean Augustin Diégane Tine alioune Kane Akouètè Jean Paul Degue Alassane Mbaye Bouna Diack Abdoul Kane Cardiology Department Idrissa Pouye General Hospital Faculty of Medicine Pharmacy and Dentistry Cheikh Anta Diop University Dakar Senegal Institute of Health and Development Public Health Service Faculty of Medicine Pharmacy and Dentistry Cheikh Anta Diop Univer-sity Dakar Senegal Cardiology Department Dalal Jamm Hospital Faculty of Medicine Pharmacy and Dentistry Cheikh Anta Diop University Dakar Senegal

Endocarditis is an inflammation of the endocardium and its structures (valves), most often of infectious origin, described by William Osler in 1885. In the 21st century, infective endocarditis remains a reality in our countries. We report a complicated case of infective endocarditis (IE). This is a 53-year-old woman, obese and passive smoker who died on the 5th day of her hospitalization following an infective endocarditis (IE) with bacterial strains resistant to the usual antibiotics: daughter of acute lithiasic cholecystitis, mother of major mitral valve perforation, brain abscess, ischemic stroke and atrial fibrillation. All were responsible for septic shock and fatal coma. Surgical management of the infective endocarditis in the first hours of her admission could have improved her prognosis. To conclude, in addition to its interests and its clinical particularities, our present observation has highlighted major public health problems specific to our sub-Saharan African countries, namely: The problem of the double health burden, the problem of delays in seeking care, the problem of resistance to antibiotics and the problem of the insufficiency of reference health technical platforms.

关键词： Infective Endocarditis Rheumatic Heart Disease Cardiovascular Risk Factors Antibiotic Resistance Acute Lithiasis Cholecystitis Neurological Complications Delayed Consultation Senegal

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Impact of COVID-19 in the Hospital Activities of a Cardiology Department: Case of the General Hospital Idrissa Pouye in Dakar, Senegal in 2020

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Open Journal of Epidemiology 2022年第2期12卷 86-101页

作者： Pêngd-Wendé Habib Boussé traore Jean Augustin Diégane Tine aliou Alassane Ngaide Joseph Salvador Mingou Alassane Mbaye Bouna Diack Abdoul Kane Cardiology Department General Hospital Idrissa Pouye Dakar Senegal Institute of Health and Development Public Health Service Faculty of Medicine Pharmacy and Odontology Cheikh Anta Diop Uni-versity Dakar Senegal Cardiology Department Aristide Le Dantec Hospital Dakar Senegal Cardiology Department Dalal Jamm Hospital Dakar Senegal

Introduction: In Senegal, at the end of 2020, there were a cumulative 18,728 confirmed cases of COVID-19 and 390 deaths. Patients with cardiovascular disease were the most affected by this morbidity and mortality. This is why we were given the objective of analyzing the effect of COVID-19 on the hospital activities of a cardiology service in Senegal. In this case that of the General Idrissa Pouye Hospital (HOGIP), by comparing admissions, deaths, average monthly length of stay and overall annual mortality of the service in 2020 with each of the four previous years. Methodology: This was a descriptive study from January 2016 to December 2020 by retrospective data collection. The collection ran from January 5, 2021 to March 30, 2021. Statistical analysis was performed with Rstudio 4.1.0 statistical analysis software. We expressed these variables as their absolute values and then we calculated the difference between the absolute value of 2020 and that of each of the previous years, both on a monthly and annual scale for each of the variables. Finally, we calculated the annual global mortality (each year from 2012 to 2020). Results: The total number of admissions in 2020 was significantly lower than in 2016 (-7.59%), 2017 (-8.78%) and 2018 (-2.16%). On the other hand, it was clearly higher than that of 2019 (+12.83%). A record in admissions was found during the month of December 2020 compared to 2016 (+64.70%), 2017 (+95.34%), 2018 (+127.02%) and 2019 (+127.02%). The average monthly length of stay in 2020 was less than or equal to those of 2016 (-7.62%), 2017 (-8.57%), 2018 (-3.03%) and 2019 (-0.00%). The total number of annual deaths in 2020 was significantly lower than in 2016 (-24.39%), 2017 (-27.06%), 2018 (-39.81%) and 2019 (-23.46%). Over the 5 years of our study, the year 2020 was the least lethal in service with an overall annual mortality of 9.79%. Conclusion: COVID-19 being a viral transmissible pathology with pulmonary tropism, its mortality is due to both re

关键词： Hospital COVID-19 Cardiology Senegal Impact

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