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Journal of Materials Science and Chemical Engineering 2024年第4期12卷 1-17页

作者： Djedjess Essoh Jules-César Meledje Bi Irié Marc Gouli Drissa Ouattara Kra vanh eric-simon zran Adjourma Konate Albert Trokourey Laboratoire de Chimie des Eaux (LCE) de l’ Ecole Normale Sup&#233rieure d&#8217Abidjan Abidjan C&#244te d&#8217Ivoire Laboratoire de Constitution et Ré action de la Mati&#232re (LCRM) &#224 l&#8217UFR SSMT-Universit&#233 F&#233lix Houphou&#235t-Boigny (UFHB) de Cocody Abidjan C&#244te d&#8217Ivoire

The availability of groundwater of acceptable quality has become a difficult challenge to meet in many countries, particularly Côte d’Ivoire. The State of Côte d’Ivoire and rural populations are building hydraulic infrastructure for this purpose. However, the quality of water coming from these infrastructures remains to be determined. This study therefore aims to analyze certain physicochemical parameters of the groundwater of Gloazra, Kouezra and Trahonfla. These are temperature, pH, electrical conductivity, TDS, salinity level, hardness, alkalinity, chloride content and bicarbonate. To determine the pH, electrical conductivity, temperature, TDS, and salinity rate, an electrochemical analysis was carried out. The titrimetric analysis made it possible to determine the chloride and bicarbonate content, alkalinity, and hardness. The results indicate that the studied groundwater is soft and acidic with good mineralization. This water does not present a health hazard to consumers but can affect hydraulic equipment and household containers.

关键词： Ivory Coast Gloazra Trahonfla Kouezra Physicochemical Parameters Water WHO Standards

Abundance and Source Identification of Polycyclic Aromatic Hydrocarbons in Sediments of the Ivory Coastal Zone (Toukouzou Hozalem-Assinie)

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American Journal of Analytical Chemistry 2023年第1期14卷 12-27页

作者： Laure Emma Oura vanh eric-simon zran Georges Kouadio Horo Koné Affoué Tindo Sylvie Konan Albert Trokourey Kouassi Benjamin Yao Fofana Bakary Laboratoire des Procédés Industriels de Synthèse de l’Environnement et des Energies Nouvelles (LAPISEN) de l’Institut National Polytechnique Félix Houphouë t Boigny de Yamoussoukro Yamoussoukro C&ocirc te d’Ivoire Centre Analyses et Recherche (CAR) Petroci Holding Abidjan C&ocirc te d’Ivoire Laboratoire de Constitution et Réaction de la Matière (LCRM) Université Félix Houphouet Boigny Abidjan Cote d’Ivoire Department of Science and Technology Université Alassane Ouattara de Bouaké Bouaké C&ocirc te d’Ivoire Laboratoire de Thermodynamique et de Physico Chimie du Milieu Université Nangui Abrogoua Abidjan C&ocirc te d’Ivoire Centre D’Analyse et de Recherche de la PETROCI (DCAR) Cô te d’Ivoire. Immeuble les Hevéas-14 Bd Carde Abidjan Cote d’Ivoire

Polycyclic aromatic hydrocarbons (PAHs) are strongly associated with agricultural, residential, transportation, industrial and petroleum activities. In this study, the presence of PAHs (polycyclic aromatic hydrocarbons) was investigated in sediments of the ivory coastal zone (Toukouzou Hozalem-Assinie). The main objectives of this study were to determine the abundance and to predict the source of PAHs in the sediments. Gas chromatography-mass spectrometry (GC-MS) was used to analyze sixteen priority PAHs. Total PAHs concentrations were from 1.31 to 3992.68 mg/kg in sediment with an average concentration of (307.54 ± 16.10) mg/kg. Among all PAHs, Naphthalene (Nap = 332.72 mg/kg) and Phenanthrene (Phe = 41.75 mg/kg) were found in the highest concentration, whereas Benzo (k) Fluoranthene was found in the least concentration in the range of 0 - 0.85 mg/kg (mean 0.24 mg/kg). Bassam-Modeste Lagune (BML) sampling site was the site with the highest concentration of total PAHs (all 16 PAHs) compared to the others due to their location in a highly populated estuary area that receives commercial, tourism, port, petroleum and heavy industrial activities. Diagnostic ratios were used to determine the sources of PAHs and suggested that the PAH profile in the sediments was dominated by 2 and 3 ring PAHs. The patterns of PAH compounds in sediment indicated that contamination is from mixed sources, with a strong indication of petrogenic contamination potentially from spills of fuel, oil and industrial activities.

关键词： Polycyclic Aromatic Hydrocarbons Sediment Source Abundance Ivorian Coastal

A Comparison of Hydrothermal Aging, SO₂ and Propene Poisoning Effects on NH₃-SCR over Cu-ZSM-5 and Cu-SAPO-34 Catalysts

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Journal of Materials Science and Chemical Engineering 2024年第5期12卷 10-28页

作者： Kouadio Brou Albert Koffi Konan Martin zran Van eric-simon Horo Kone Unité de Formation et de Recherche des Sciences et de Technologies (UFR ST) Universit&#233 Alassane Ouattara Bouak&#233 C&#244te d&#8217Ivoire Unité de Formation et de Recherche Environnement (UFR E) Universit&#233 Jean Lorougnon Gu&#233d&#233 Daloa C&#244te d&#8217Ivoire Unité de Formation et de Recherche des Sciences des Structures de la Mati&#232re et de Technologie (UFR SSMT) Abidjan C&#244te d&#8217Ivoire

This study was aimed to investigate the effects of hydrothermal aging, propene and SO2 poisoning on the ammonia-selective catalytic reduction (NH3-SCR) performance of both Cu-SAPO-34 and Cu-ZSM-5. The catalytic activities of fresh, aged and poisoned samples were tested in ammonia-selective catalytic reduction (NH3-SCR) of NOx conditions. The XRD, TG and N2-desorption results showed that the structures of the Cu-SAPO-34 and Cu-ZSM-5 remained intact after 750˚C hydrothermally aged, SO2 and propene poisoned. After hydrothermal aging at 750˚C for 12 h, the NO reduction performance of Cu-ZSM-5 was significantly reduced at lower temperatures, while that of Cu-SAPO-34 was less affected. Moreover, Cu-SAPO-34 catalyst showed high NO conversion with SO2 or propene compared to Cu-ZSM-5. However, Cu-ZSM-5 showed a larger drop in catalytic activity with SO2 or propene compared to Cu-SAPO-34 catalyst. The H2-TPR results showed that Cu2 ions could be reduced to Cu and Cu0 for Cu-ZSM-5, while no significant transformation of copper species was observed for Cu-SAPO-34. Meanwhile, the UV-vis DRS results showed that CuO species were formed in Cu-ZSM-5, while little changes were observed for the Cu-SAPO-34. Cu-SAPO-34 showed high sulfur and hydrocarbon poison resistance compared to Cu-ZSM-5. In summary, Cu-SAPO-34 with small-pore zeolite showed higher hydrothermal stability and better hydrocarbon and sulfur poison resistant than Cu-ZSM-5 with medium-pore.

关键词： Hydrothermal Aging Propene and SO2Poisoning Ammonia-Selective Catalytic Reduction(NH3-SCR) Cu-SAPO-34 Cu-ZSM-5

Prevention of complications in endourological management of stones:What are the basic measures needed before,during,and after interventions?

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Asian Journal of Urology 2024年第2期11卷 180-190页

作者： eric Edison Giorgio Mazzon Vimoshan Arumuham simon Choong Department of Urology University College Hospital LondonLondonUK Department of Urology San Bassiano HospitalVicenzaItaly

Objective:This narrative review aims to describe measures to minimise the risk of complications during percutaneous nephrolithotomy(PCNL),ureteroscopy,and retrograde intrarenal ***:A literature search was conducted from the PubMed/PMC database for papers published within the last 10 years(January 2012 to December 2022).Search terms included“ureteroscopy”,“retrograde intrarenal surgery”,“PCNL”,“percutaneous nephrolithotomy”,“complications”,“sepsis”,“infection”,“bleed”,“haemorrhage”,and“hemorrhage”.Key papers were identified and included meta-analyses,systematic reviews,guidelines,and primary *** references of these papers were searched to identify any further relevant papers not included ***:The evidence is assimilated with the opinions of the authors to provide *** practice pathways for patient care in the pre-operative,intra-operative,and post-operative periods are described,including the identification and management of residual *** complications(sepsis and stent issues)that are relevant for any endourological procedure are then be ***-specific considerations are then *** measures for PCNL include optimising access to minimise the chance of bleeding or visceral *** role of endoscopic combined intrarenal surgery in this regard is *** measures for ureteroscopy and retrograde intrarenal surgery include planning and technique to minimise the risk of ureteric *** role of anaesthetic assessment is *** importance of specific comorbidities on each step of the pathway is highlighted as ***:This review demonstrates that the principles of meticulous planning,interdisciplinary teamworking,and good operative technique can minimise the risk of complications in endourology.

关键词： Endourology Ureteroscopy Retrogradeintrarenal surgery Percutaneous nephrolithotomy Complications Sepsis Stent

Aging impairs the osteocytic regulation of collagen integrity and bone quality

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Bone Research 2024年第1期12卷 78-94页

作者： Charles A.Schurman Serra Kaya Neha Dole Nadja M.Maldonado Luna Natalia Castillo Ryan Potter Jacob P.Rose Joanna Bons Christina D.King Jordan B.Burton Birgit Schilling simon Melov simon Tang eric Schaible Tamara Alliston Department of Orthopaedic Surgery University of CaliforniaSan FranciscoCA 94143USA UC Berkeley/UCSF Graduate Program in Bioengineering San FranciscoCA 94143USA Buck Institute for Research on Aging NovatoCA 94945USA Washington University in St Louis Department of OrthopedicsSt.LouisMO 63130USA Advanced Light Source Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA

Poor bone quality is a major factor in skeletal fragility in elderly *** molecular mechanisms that establish and maintain bone quality,independent of bone mass,are unknown but are thought to be primarily determined by *** hypothesize that the age-related decline in bone quality results from the suppression of osteocyte perilacunar/canalicular remodeling(PLR),which maintains bone material *** examined bones from young and aged mice with osteocyte-intrinsic repression of TGFβsignaling(TβRII^(ocy−/−))that suppresses *** control aged bone displayed decreased TGFβsignaling and PLR,but aging did not worsen the existing PLR suppression in male TβRII^(ocy−/−)*** relationship impacted the behavior of collagen material at the nanoscale and tissue scale in macromechanical *** effects of age on bone mass,density,and mineral material behavior were independent of osteocytic TGFβ.We determined that the decline in bone quality with age arises from the loss of osteocyte function and the loss of TGFβ-dependent maintenance of collagen integrity.

关键词： maintain primarily integrity

Optimization of Preparation Conditions of Activated Carbons Based on the Shells of Ricinodendron heudoltii

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Journal of Materials Science and Chemical Engineering 2022年第10期10卷 40-58页

作者： Kouakou Yao Urbain Karidioula Daouda zran vanh eric-simon Trokourey Albert Yao Kouassi Benjamin Drogui Patrick UFR Sciences et Technologies Université de Man Man C&#244 te d’Ivoire Laboratoire de Constitution et Réaction de la Matière (LCRM) à l’UFR SSMT Université Félix Houphou&#235 t-Boigny (UFHB) de Cocody Abidjan C&#244 te d’Ivoire Laboratoire des Procédés Industriels de Synthèse de l’Environnement et des Energies Nouvelles (LAPISEN) de l’Institut National Polytechnique Félix Houphouë t Boigny de Yamoussoukro Yamoussoukro C&#244 te d’Ivoire Institut National de la Recherche Scientifique Département INRS-Eau Terre et Environnement Université du Québec Québec Canada

The purpose of this work is to prepare better activated carbons from the shells of Ricinodendron Heudelotii by chemical activation with sulfuric acid (H2SO4) and sodium hydroxide (NaOH). The process was optimized by a full factorial design (2K) based on the analysis of the external specific surface area of sixteen (16) activated carbons prepared according to the parameters of the preparation. This active analysis reveals that under the preparation conditions, good carbons are obtained for a sodium hydroxide concentration equal to 1 M, an impregnation time of 24 h and carbonization at 500˚C for 1 h. The external specific surface of this carbon is 358 m2 • g-1. The characteristics of this prepared carbon are as follows: a pH at zero point charge (pHpzc) of 8.2, a predominantly amorphous structure, a basic character and a low ash content (4.2%). It also has surface functions;the lactonic and carbonyl groups (C=O) at 1600 cm-1 and the carboxylate groups (O-H or C-O) at 1340 cm-1.

关键词： Activated Carbons Ricinodendron Heudelotii Chemical Activation Optimization Specific Surface

Oculoplastic publication trends in general ophthalmology journals

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International Journal of Ophthalmology(English edition) 2022年第11期15卷 1852-1856页

作者： Jean-Paul Dray Nur Khatib eric Souied Peerooz Saeed Guy Ben simon Juliana Gildener-Leapman Ofira Zloto Department of Ophthalmology Centre Hospitalier Intercommunal de CreteilCreteil 94000France Orbital Center Department of OphthalmologyAmsterdam University Medical CentersAmsterdam 1105the Netherlands Goldschleger Eye Institute Sheba Medical CenterAffiliated to the Sackler Faculty of MedicineTel Aviv UniversityTel Aviv6997801Israel Meir Medical Center Kfar Saba 4428164Israel

AIM: To examine the publication trend of oculoplastic articles throughout the last decade in general ophthalmology ***: A review of all abstracts published between Januar y 2010 to December 2019 in general, clinical ophthalmic journals was conducted. Articles that were categorized as original articles in general and clinical journals were included in the ***: Totally 10 281 abstracts were included. Of them 465(4.5%) were oculoplastic publications. The mean number of annual-publications was 46.5 and the mean annual-rate of oculoplastic publications was 4.51%. A significant decreasing trend in the number of oculoplastic publication in the last decade was found(P<0.01, R^(2)=0.770). However, there was no significant change in the annual-rate of oculoplastic publications during the last decade(P=0.191, R2=0.203). From the 465 oculoplastic articles: 179(38.5%) were articles about eyelid diseases, 160(34.40%) were about orbit diseases, 92(19.80%) were about lacrimal diseases and 34(7.30%) were about thyroid eye disease(TED). A significant decreasing trends in the number of orbital and eyelids publications were found(P<0.01, P<0.01). However, there were no significant changes in the annual-rate of orbital, eyelids, TED and lacrimal-diseases publications throughout the last ***: Oculoplastic subspecialty deals with a wide range of pathologies in different ages. However, less than 5% of the articles in general, clinical, high impact factor ophthalmology journals are about oculoplastic diseases. One of the best way for ophthalmologists from different subspecilties, nowadays, to be updated, is to read highimpact-factor, general ophthalmology journals. Therefore, it is important that those journals will include articles about breakthroughs in oculoplastic.

关键词： oculoplastic publications journals general articles ophthalmology

Machine learning-based decision tool for selecting patients with idiopathic acute pancreatitis for endosonography to exclude a biliary aetiology

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世界胃肠病学杂志:英文版 2023年第35期29卷 5138-5153页

作者： simon Sirtl Michal Żorniak eric Hohmann Georg Beyer Miriam Dibos Annika Wandel Veit Phillip Christoph Ammer-Herrmenau Albrecht Neesse Christian Schulz Jörg Schirra Julia Mayerle Ujjwal Mukund Mahajan Department of Medicine II LMU University HospitalMunich 81377Germany Department of Endoscopy Maria Sklodowska-Curie National Research Institute of OncologyGliwice 44-113Poland Department of Internal Medicine II School of MedicineUniversity Hospital Rechts der IsarTechnical University of MunichMunich 81675Germany Department of Gastroenterology Gastrointestinal Oncology and EndocrinologyUniversity Medical CenterGöttingen 37075Germany

BACKGROUND Biliary microlithiasis/sludge is detected in approximately 30%of patients with idiopathic acute pancreatitis(IAP).As recurrent biliary pancreatitis can be prevented,the underlying aetiology of IAP should be *** To develop a machine learning(ML)based decision tool for the use of endosonography(EUS)in pancreatitis patients to detect sludge and *** We retrospectively used routinely recorded clinical and laboratory parameters of 218 consecutive patients with confirmed AP admitted to our tertiary care hospital between 2015 and *** who did not receive EUS as part of the diagnostic work-up and whose pancreatitis episode could be adequately explained by other causes than biliary sludge and microlithiasis were *** trained supervised ML classifiers using H_(2)*** automatically selecting the best suitable predictor model to predict microlithiasis/*** predictor model was further validated in two independent retrospective cohorts from two tertiary care centers(117 patients).RESULTS Twenty-eight categorized patients’variables recorded at admission were identified to compute the predictor model with an accuracy of 0.84[95%confidence interval(CI):0.791-0.9185],positive predictive value of 0.84,and negative predictive value of 0.80 in the identification cohort(218 patients).In the validation cohort,the robustness of the prediction model was confirmed with an accuracy of 0.76(95%CI:0.673-0.8347),positive predictive value of 0.76,and negative predictive value of 0.78(117 patients).CONCLUSION We present a robust and validated ML-based predictor model consisting of routinely recorded parameters at admission that can predict biliary sludge and microlithiasis as the cause of AP.

关键词： Acute pancreatitis Idiopathic acute pancreatitis Biliary pancreatitis Microlithiasis Sludge Endosonography

A family study of endophenotypes for psychosis within an early intervention programme in Hong Kong: Rationale and preliminary findings

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Chinese Science Bulletin 2011年第32期56卷 3394-3397页

作者： LUI simon S Y SHAM Pak CHAN Raymond C K CHEUNG eric F C Neuropsychology and Applied Cognitive Neuroscience Laboratory Key Laboratory of Mental Health Institute of Psychology Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences Castle Peak Hospital Department of Psychiatry the University of Hong Kong

The study of endophenotypes may be a viable strategy to tackle the genetic complexity and phenotypic heterogeneity of psychosis, but this research direction is relatively under-developed in China as compared to Western countries. We have recently initiated one of the first family studies of endophenotypes for psychosis in China. Patients entering an established early psychosis intervention service are recruited into this research project for phenotyping, endophenotyping and genotyping. At the endophenotypic level, four domains (neurological soft signs, neurocognition of prospective memory, social cognition of facial emotion recognition, and affective cognition of anticipatory and consummatory pleasure) are studied in the sample of patients with psychosis and their unaffected siblings. This article illustrates the benefit of a research-oriented clinical programme and its findings based on the data collected as of early 2011.

关键词：精神病患者稳定家庭早期原理预计香港面部表情识别

Diesel engine exhaust exposures in two underground mines

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International Journal of Mining Science and Technology 2017年第4期27卷 641-645页

作者： Debia Maximilien Couture Caroline Njanga Pierre-eric Neesham-Grenon Eve Lachapelle Guillaume Coulombe Hugo Hallé Stéphane Aubin simon Department of Environmental and Occupational Health School of Public Health Universite de Montreal 2375 chemin de la Cote Ste-Catherine Montreal H3T IA8 Canada Department of Mechanical Engineering F.cole de Technologie Superieure 1100 rue Notre-Dame Ouest Montreal H3C 1K3 Canada Health and Safety Agnico Eagie Mines 145 King Street East Suite 400 Toronto MSC 2Y7 Canada Health and Safety Westwood Mine (IAMGOLD) Chemin Arthur Doyon PreissacJOY 2EO Canada Institut de recherche Robert-Sauve en sante et en securite du travail (IRSST) 505 Boul. de Maisonneuve Ouest Montreal H3A 3C2 Canada

Exposure to diesel engine exhaust(DE) is a major concern in underground mines. It has been linked to cardiopulmonary diseases and is classified as a human carcinogen. The goal of this study is to assess DE exposures in workers at two underground gold mines, to compare exposure levels within and between the mines, and to compare different methods of measuring DE exposures, namely respirable combustible dust(RCD), elemental carbon(EC) and total carbon(TC). Ambient and personal breathing zone(PBZ) measurements were taken. Side-by-side monitoring of RCD and of the respirable fraction of EC and TC(EC_Rand TC_R) was carried out in the workers' breathing zone during full-shift *** ambient measurements, in addition to EC_R, TC_Rand RCD, a submicron aerosol fraction(less than 1 mm) of EC and TC was also sampled(EC_1and TC_1). Average ambient results of 240 mg/m^3 in RCD, 150 mg/m^3 in EC_Rand 210 mg/m^3 in TC_Rare obtained. Average PBZ results of 190 mg/m^3 in RCD,84 mg/m^3 in EC3Rand 150 mg/min TC_Rare obtained. Very good correlation is found between EC_Rand EC_1 with a Pearson correlation coefficient of 0.99(p < 0.01) calculated between the two logtransformed concentrations. No differences are reported between EC_Rand EC_1, nor between TC_Rand TC_1, since ratios are equal to 1.04, close to 1, in both cases. Highest exposures are reported for loadhaul-dump(LHD) and jumbo drill operators and conventional miners. Significant exposure differences are reported between mines for truck and LHD operators(p < 0.01). The average TC_R/EC_Rratio is 1.6 for PBZ results, and 1.3 for ambient results. The variability observed in the TC_R/EC_Rratio shows that interferences from non-diesel related organic carbon can skew the interpretation of results when relying only on TC data.

关键词： Diesel exposure Underground mine Respirable combustible dust Elemental carbon Total carbon Diesel particulate matter Similar exposure groups