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Journal of Energy Chemistry 2019年第8期28卷 168-173,I0006页

作者： Irene Gatto Ada sacca Vincenzo Baglio Antonino Salvatore Arico Claudio Oldani Luca Merlo Alessandra Carbone CNR-ITAE Institute for Advanced Energy Technologies"N. Giordano" Via S. Lucia Sopra Contesse 5Messina Italy Solvay Specialty Polymers Viale Lombardia 20 20021 Bollate MI Italy

The membrane-electrodes assembly(MEA) is the core of the Polymer Electrolyte Fuel Cell(PEFC). It consists of a membrane, catalytic(CL) and gas diffusion layers(GDL). In order to manufacture MEAs with suitable performance, a hot-pressing procedure is generally used. The relevant parameters are the temperature, pressure and time of hot-pressing. Such variables need to be adjusted as a function of the type of ionomer used in the catalytic layer and membrane. In this study, an evaluation of the temperature of hot-pressing was carried out and its influence on MEA electrochemical performance was assessed. In particular, preparation trials of MEAs were carried out with reinforced experimental membranes based on Aquivion^■ short-side-chain PFSA(by Solvay Specialty Polymers). The membranes were coupled to gas diffusion electrodes, and MEAs were manufactured using different temperatures for the hot-pressing procedure in order to evaluate their influence on the electrochemical performance of PEFCs, in the temperature range of 80–95 °C, with low relative humidity of the reactant gases. The electrochemical performance of the prepared MEAs was tested in a H2/Air 25 cm^2 single cell in terms of polarization curves and accelerated stress test(AST).

关键词： Aquivion^(■) Short-side chain PEFC Hot-pressing parameters Automotive applications

Risk Factors for Cardiovascular Disease among Hotel Workers, Bohicon, Benin

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Occupational Diseases and Environmental Medicine 2024年第2期12卷 130-141页

作者： Mênonli Adjobimey Rose Mikponhoué Eméline Gbaguidi Esdras Hountohotegbè Hélène sacca Paul Ayélo Vikkey Antoine Hinson Unité de Recherche et d&#8217Enseignement en Sant&#233 au Travail et Environnement FSS Cotonou Cotonou Benin Service de Santé au Travail du Centre National Hospitalier Universitaire de Pneumo Phtisiologie de Cotonou Cotonou Benin Laboratoire d’ Epid&#233miologie des Maladies Chroniques et Neurologiques FSS Cotonou Benin

Introduction: Non-communicable diseases (NCDs) are on the increase in several sectors of activity. The aim of the study was to determine the frequencies of cardiovascular risk factors (CVRF) and factors associated with hypertension among hotel workers in the city of Bohicon. Methods: This was a descriptive and analytical cross-sectional study conducted in the period from December 2018 to January 2019. The variables studied were sociodemographic, occupational, anthropometric and behavioral. Participant recruitment was exhaustive. A standardized questionnaire inspired by the STEPS-WHO questionnaire was used for data collection. After the descriptive analysis, a bivariate analysis was performed using Pearson’s Chi-square test or Fisher’s test at the 5% threshold. Results: A total of 101 workers, 53 (52.47%) of them male, participated in the study. The mean age was 30.60 ± 8.20 years, with extremes of 18 and 55 years. The frequencies of the main risk factors were: 68.32% sitting position > 6 hours/day;38.61% shift work;21.78% high psychological demand, 82.18% low decision latitude, 24.75% low social support, 21.78% occupational stress;7 (6.93%) harmful alcohol consumption;6.93% tobacco consumption;48.51% insufficient physical activity;98.02% insufficient fruit and vegetable consumption;59.41% overweight;14.85% HTA. Factors associated with hypertension were: sex, age and marital status. Conclusion: Occupational factors need to be taken into account when assessing CVRFs. NCD control programs are needed in all sectors of activity. A larger study is needed in the hotel sector.

关键词： FDRCV Occupational Factors Hypertension Hotels Benin

Hypertension and Work Stress among City Hall Workers, Bohicon, Benin

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Occupational Diseases and Environmental Medicine 2022年第2期10卷 102-115页

作者： Mênonli Adjobimey Rose Mikponhoué Djohoun F. Frimège Ibrahim Mama Cissé Concheta Tchibozo Esdras Hountohotegbe Hélène sacca Paul Ayélo Vikkey Antoine Hinson Dismand Houinato Research and Teaching Unit in Occupational and Environmental Health FSS Cotonou Benin Service of the National University Hospital of Pneumo-Phtisiology of Cotonou Cotonou Benin Laboratory of Epidemiology of Chronic and Neurological Diseases FSS Cotonou Benin School of Medicine University of Parakou Parakou Benin

Introduction: In the general population as well as in the workplace, hypertension is one of the main causes of morbidity and mortality in the world. The particularities of hypertension in the world of work remain little studied. The objective of this study was to determine the prevalence and factors associated with hypertension among workers in a town hall in Benin in 2019. Methods: This was a descriptive, analytical cross-sectional study conducted from December 2018 to January 2019. A comprehensive recruitment was conducted. Data were collected during a face-to-face interview, supplemented by measurement of anthropometric parameters and blood pressure as well as a work stress assessment. Frequencies were compared using the chi-square test and Fisher’s test. The significance level was 5%. Results: A total of 86 workers were included. Their mean age was 41.55 ± 9.82 years with a sex ratio of 6.1. The prevalence of hypertension was estimated to be 18.6% [95% CI: 11.96% - 29.75%]. Hypertension was higher in workers under work stress (41.18%) as opposed to non-stressed workers (14.49%) (p = 0.032);in those who were overweight (30.77) as opposed to non-overweight (2.94%) (p Conclusion: Work stress and obesity are modifiable factors associated with hypertension in workers at the Bohicon city hall. These factors deserve to be corrected by occupational health promotion and prevention actions.

关键词： Hypertension Stress Overweight Workers Benin

人小梁网的氧化DNA损害——与原发性开角青光眼患者的临床相关性

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美国医学会眼科杂志（中文版） 2005年第4期17卷 208-213页

作者： Sergio Claudio sacca Antonio Pascotto Paola Camicione Paolo Capris Alberto Izzotti 林旭初（译）惠延年（校） Department of Neurosciences Ophthalmology and Genetics Clinica Oculistica Benevento Italy. University of Genoa Genoa Italy and Casa di Cura GEPOS-Telese Terme Benevento Italy. Department of Health Sciences Section of Hygiene and Preventive Medicine Benevento Italy. 不详

目的：评价氧化的分子损害的强度及其临床相关性：视野（VF）损害、眼压、年龄和病程长短。方法：从17例行标准滤过手术的青光眼患者收集的人小梁网标本中提取DNA。与21只角膜移植收集的健康眼标本作对照。氧化DNA损害由测定8-羟基-2’... 详细信息

目的：评价氧化的分子损害的强度及其临床相关性：视野（VF）损害、眼压、年龄和病程长短。方法：从17例行标准滤过手术的青光眼患者收集的人小梁网标本中提取DNA。与21只角膜移植收集的健康眼标本作对照。氧化DNA损害由测定8-羟基-2’-脱氧鸟苷（8-OH-dG）水平来估价。所有患者术前均经Humphrey 30-2视野检查和日间眼压测量。结果：在青光眼患者和对照组中，DNA氧化损害的均数±标准差分别为8．51±5．44和1．75±1．80 8-OH-dG个分子／10。正常核苷酸。在人小梁网DNA氧化损害、视野损害和眼压之间发现了统计学上显著的相关性。没有发现其他统计学上的显著相关性。结论：氧化应激在原发性开角青光眼代表着一个重要的致病步骤。因为它诱发了人小梁网的变性，有助于眼压升高。由此启动了青光眼的发病级联过程。

关键词：原发性开角青光眼 DNA损害青光眼患者氧化损害临床相关性小梁网眼压测量病程长短滤过手术角膜移植

Cotonou(Benin)大学医院下肢慢性阻塞性动脉疾病与糖尿病患者的流行病学资料(法国)

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世界核心医学期刊文摘（心脏病学分册） 2005年第6期1卷 40-41页

作者： Houénassi M. sacca-Véhounkpe J. Tchabi Y. 王永兴 Dr.U.Soins Enseignement Rech./Cardiol. Faculte des Sciences de la Sante BP 188 Cotonou Bénin France

The aims of this study were to determine the prevalence of chronic obstructive arterial disease of the lower limbs and to identify the factors which contribute to its occurrence in a population of adult African francophone diabetics. This was a prospective study which included all consenting diabetics systematically over a 6 month period at the out patient clinic or during hospital admission. Patients with incomplete data were excluded. An ankle systolic pressure index of less than 0.9 was required for the diagnosis of obstructive arterial disease. Demographic parameters, the characteristics of the diabetes, the quality of blood sugar control, the presence of classical cardiovascular risk factors and the results of their treatment, the nature and distribution of the arterial lesions on ultrasonography were all studied. A univariate analysis and a multivariate analysis of their correspondences were undertaken to determine the correlation coefficients. The prevalence of arterial disease of the lower limbs in the 102 diabetics retained for the study(average age 53 years)was 33.3%. The arterial disease was distal in 47%of cases and diffuse in 26.5%of cases. The arterial wall was calcified in 19.6%of cases. In univariate analysis only age was correlated with arterial disease(p=0.04), the duration of diabetes tended to be related(p=0.07). In multi-factorial analysis of correspondences with other factors, hypertension, hyperlipidaemia and multiple cardiovascular risk factors seemed to be correlated with arterial disease of the lower limbs. Therefore, arterial disease of the lower limbs is very common and an early complication of diabetic patients in Benin. Predisposing factors were age and, probably, duration of diabetes, hypertension, hyperlipidaemia and multiple cardiovascular risk factors.

关键词： Benin Cotonou 动脉疾病大学医院动脉病多因素相关分析血管危险因素踝部收缩压动脉壁脂血症

Complications of Peripartum Cardiomyopathy at the Departmental University Hospital Teaching of Borgou (Benin) in 2022: About 3 Cases

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World Journal of Cardiovascular Diseases 2022年第11期12卷 514-526页

作者： Léopold Houétondji Codjo Serge Hugues Mahougnon dohou Sèdjro Raoul Atade Fabrice Atika Hamondji Nicolas Amegan Chabi Olaniran Alphonse Biaou Kayivi Murielle Hounkponou Djidjoho Arnaud Sonou Mahouna Philippe Adjagba Marielle dorine Soude do.inique sacca Mèdéssè Rolande Quenum Aude Sourou Bodjrenou Martin Dèdonougbo Houenassi Cardiology Teaching and Research Unit (CNHU-HKM) Faculty of Health Sciences University of Abomey Calavi Cotonou Benin Teaching and Research Unit in Cardiology (CHUD-B/A) Faculty of Medicine University of Parakou Parakou Benin Teaching and Research Department of Gynecology and Obstetric (CHUD-B/A) Faculty of Medicine University of Parakou Parakou Benin doctoral School of Health Sciences University of Abomey Calavi Cotonou Benin Regional Institute of Public Health University of Abomey Calavi Cotonou Benin Cardiology Teaching and 6 Research Unit (CHU-MEL) Faculty of Health Sciences University of Abomey Calavi Cotonou Benin Cardiology Department of Atacora-donga Department Hospital Center (CHD-A/D) Natitingou Benin Teaching and Research Unit in Cardiology Faculty of Medicine (CHU-OP) University of Abomey Calavi Cotonou Benin

Introduction: Peripartum cardiomyopathy (PPCM) is a dilated cardiomyopathy occurring in the last month of pregnancy or the first five months postpartum without pre-existing cardiovascular pathology. It is a major cause of pregnancy-related heart failure with high morbidity and mortality. In severe forms (10% to 15% of cases), thrombo-embolic complications are the main cause. The initial hemodynamic evolution is totally unpredictable and sometimes extremely brutal and fatal. The objective of this work was to show the often pejorative evolution of PPCM in our country. Methods: We report in this work three serious clinical cases revealing the complications of this PPCM among patients admitted to the cardiology department of the CHUD-B/A in 2022 for heart failure. The data were collected according to the Declaration of Helsinki. Patients and Observations: The first case was a PPCM with severe left ventricular (LV) systolic dysfunction complicated by spontaneous left intraventricular contrast and right superficial sylvian ischemic stroke. The second case reports a global cardiac decompensation of a PPCM with severe LV systolic dysfunction complicated by an apical thrombus. The third case is that of a state of cardiogenic shock complicating a PPCM with severe LV systolic dysfunction. Among our 03 patients presenting these severe forms of PPCM, the evolution, in spite of the symptomatic and prognostic treatments of the heart failure, and even of the complications, was unfavourable with death in two of them. Conclusion: Complications of PPCM are frequent and fatal in Benin.

关键词： Cardiomyopathy Peripartum Complications Parakou Benin