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Artificial neural network approach for multiphase segmentation of battery electrode nano-CT images

npj Computational Materials 2022年第1期8卷 255-265页

作者： Zeliang Su etienne decencière Tuan-Tu Nguyen Kaoutar El-Amiry Vincent De Andrade Alejandro A.Franco Arnaud Demortière Laboratoire de Réactivitéet Chimie des Solides(LRCS) CNRS UMR 7314Universitéde Picardie Jules VerneHub de l’EnergieRue Baudelocque80039Amiens CedexFrance Réseau sur le Stockage Electrochimique de l’Energie(RS2E) CNRS FR 3459Hub de l’EnergieRue Baudelocque80039Amiens CedexFrance MINES ParisTech–PSL research University CMMCenter for Mathematical Morphology35 rue Saint HonoréFontainebleauFrance renault Technocentre 78084GuyancourtFrance Advanced Photon Source Argonne National LaboratoryLemontUSA Institut Universitaire de France 101 Boulevard Saint Michel75005ParisFrance ALISTOre-European research Institute CNRS FR 3104Hub de l’EnergieRue Baudelocque80039Amiens CedexFrance

The segmentation of tomographic images of the battery electrode is a crucial processing step,which will have an additional impact on the results of material characterization and electrochemical ***,manually labeling X-ray CT images(XCT)is time-consuming,and these XCT images are generally difficult to segment with histographical *** propose a deep learning approach with an asymmetrical depth encode-decoder convolutional neural network(CNN)for real-world battery material *** network achieves high accuracy while requiring small amounts of labeled data and predicts a volume of billions voxel within few *** applying supervised machine learning for segmenting real-world data,the ground truth is often *** results of segmentation are usually qualitatively justified by visual *** try to unravel this fuzzy definition of segmentation quality by identifying the uncertainty due to the human bias diluted in the training *** CNN trainings using synthetic data show quantitative impact of such uncertainty on the determination of material’s ***-XCT datasets of various battery materials have been successfully segmented by training this neural network from *** will also show that applying the transfer learning,which consists of reusing a well-trained network,can improve the accuracy of a similar dataset.

关键词： neural network battery

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Predicting missing Energy Performance Certificates:Spatial interpolation of mixture distributions

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Energy and AI 2024年第2期16卷 200-212页

作者： Marc Grossouvre Didier Rullière Jonathan Villot Mines Saint-etienne CNRSUMR 6158 LIMOSInstitut Henri FayolDepartement GMIEspace Fauriel29 rue PonchardierSaint-Etienne42023France U.R.B.S.SAS Bâtiment des Hautes Technologie20 Rue Professeur Benoit LAURASSaint-Etienne42000France Mines Saint-etienne Univ Clermont AuvergneCNRSUMR 6158 LIMOSInstitut Henri FayolEspace Fauriel29 rue PonchardierSaint-Etienne42023France Mines Saint-etienne Univ LyonCNRSUniv Jean MonnetUniv Lumiere Lyon 2Univ Lyon 3 Jean MoulinENS LyonENTPEENSA LyonUMR 5600 EVSInstitut Henri FayolSaint-Etienne42023France

Mass renovation goals aimed at energy savings on a national scale require a significant level of public financial *** identify target buildings,decision-makers need a thorough understanding of energy *** Performance Certificates(EPC)provide information about areas of space,such as land plots or a building’s footprint,without specifying exact *** cover only a fraction of *** paper demonstrates that learning from observed EPCs to predict missing ones at the building level can be viewed as a spatial interpolation problem with uncertainty both on input and output *** Kriging methodology is applied to random fields observed at random locations to determine the Best Linear Unbiased Predictor(BLUP).Although the Gaussian setting is lost,conditional moments can still be *** are admissible,even with missing *** present applications using both simulated and real data,with a specific case study of a city in France serving as an example.

关键词： Climate governance Energy efficiency Multi-scale processes Areal data Change of support

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Method Development and Validation of the Simultaneous Analysis of Methylisothiazolinone, Methylchloroisothiazolinone, Benzisothiazolinone and Bronopol in Washing-Up Liquid

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American Journal of Analytical Chemistry 2024年第1期15卷 43-55页

作者： etienne Jooken Ruis Amery Boudewijn Meesschaert Laboratory of Microbial and Bio-Chemical Technology (Lab μBCT) Department of Microbial and Molecular Systems KU Leuven-Bruges Campus Brugge Belgium

A method of analysis for the simultaneous determination of methylisothiazolinone (MI), methylchloroisothiazolinone (CMI), benzisothiazolinone (BIT) and Bronopol (BNP) in washing-up liquid was established. The method consisted of a gradient HPLC analysis at three different wavelengths. The four compounds could be analyzed with good precision and accuracy.

关键词： Preservatives Analytical Validation Methylisothiazolinone Methylchloroisothiazolinone Benzisothiazolinone Bronopol HPLC Washing-Up Liquid

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Optimising Energy Consumption in SD-DCN Networks (Software Defined-Data Center Network)

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Open Journal of Applied Sciences 2024年第8期14卷 2223-2235页

作者： Narcisse Tahi etienne Soro Pacôme Brou Olivier Asseu UMRI STI INPHB INPHouphout Boigny Yamoussoukro Cte dIvoire Ecole Suprieure Africaine des Technologies de lInformation et de la Communication (ESATIC) LASTIC Laboratory of ESATIC Abidjan Cte dIvoire

Over the last decade, the rapid growth in traffic and the number of network devices has implicitly led to an increase in network energy consumption. In this context, a new paradigm has emerged, Software-Defined Networking (SDN), which is an emerging technique that separates the control plane and the data plane of the deployed network, enabling centralized control of the network, while offering flexibility in data center network management. Some research work is moving in the direction of optimizing the energy consumption of SD-DCN, but still does not guarantee good performance and quality of service for SDN networks. To solve this problem, we propose a new mathematical model based on the principle of combinatorial optimization to dynamically solve the problem of activating and deactivating switches and unused links that consume energy in SDN networks while guaranteeing quality of service (QoS) and ensuring load balancing in the network.

关键词： DCN Optimisation Energy Consumption QoS SDN

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Severe acute respiratory syndrome coronavirus-2-related and imputable deaths in children:results from the French pediatric national registry

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World Journal of Pediatrics 2024年第6期20卷 611-620页

作者： Marguerite Lockhart-Bouron Noemie Vanel Michael Levy Anais R.Briant etienne Javouhey Sophie Breinig Julia Dina Marion Caseris Francois Angoulvant Stephane Leteurtre Morgan recher David W.Brossier Univ.Lille CHU LilleULR 2694-METRICS:Evaluation Des Technologies de Sante Et Des Pratiques Medicales59000LilleFrance Pediatric Intensive Care Unit CHU de MarseilleMarseilleFrance Pediatric Intensive Care Unit CHU Robert-DebreAssistance Publique Hopitaux de ParisParisFrance UniversitéParis-Cite ParisFrance Biostatistics and Clinical research Unit CHU de Caen Normandie14000CaenFrance Pediatric Intensive Care Hospices Civils de LyonLyonFrance Neonatal andPediatric IntensiveCare Unit Children's HospitalToulouseFrance Virology Department INSERM U1311 DynamicureUniv CAEN NormandieCHU de Caen14000 CaenFrance Medical School Universite Caen Normandie14000 CaenFrance Department of Pediatrics CHU Robert-DebréAssistance Publique Hopitaux de ParisParisFrance Department Women-Mother-Child Service of PediatricsLausanne University Hospital(CHUV)LausanneSwitzerland Pediatric Intensive Care Unit Réanimation Et Soins Intensifs PéediatriquesCHU de CAENAvenue de La Cote de Nacre14000 CaenFrance CHU Sainte Justine research Center MontréalCanada

Background Severe acute respiratory syndrome coronavirus-2(SARS-CoV-2)is responsible for an important mortality rate *** aimed to evaluate the actual imputability of SARS-CoV-2 on the mortality rate associated with SARS-CoV-2-related illnesses in the pediatric intensive care unit(PICU).Secondary objectives were to identify risk factors for *** This national multicenter comparative study comprised all patients under 18 years old with positive SARS-CoV-2 polymerase chain reactions(PCRs)[acute corona virus disease 2019(COVID-19)or incidental SARS-CoV-2 infection]and/or pediatric inflammatory multisystem syndrome(PIMS)recorded in the French PICU registry(PICUre)between September 1,2021,and August 31,*** patients were classified and compared according to their living status at the end of their PICU *** patients were evaluated by four experts in the field of pediatric infectiology and/or pediatric intensive *** imputability of SARS-CoV-2 as the cause of death was classified into four categories:certain,very probable,possible,or unlikely,and was defined by any of the first three *** There were 948 patients included of which 43 died(4.5%).From this,26 deaths(67%)could be attributed to SARS-CoV-2 infection,with an overall mortality rate of 2.8%.The imputability of death to SARS-CoV-2 was considered certain in only one case(O.1%).Deceased patients suffered more often from comorbidities,especially heart disease,neurological disorders,hematological disease,cancer,and *** of the deceased patients were admitted for pediatric inflam-matory multisystem syndrome(PIMS).Mortality risk factors were male gender,cardiac comorbidities,cancer,and acute respiratorydistress *** SARS-CoV-2 mortality in the French pediatric population was *** though the imputability of SARS-Cov-2 on mortality was considered in almost two-thirds of cases,this imputability was considered certain in only one case.

关键词： Death Pediatric intensive care unit SARS-CoV-2

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Outcomes of intracranial hemorrhage in critically ill patients with acute leukemia: results of a retrospective cohort study

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Journal of Intensive Medicine 2024年第4期4卷 508-514页

作者： Antoine Herault Yannick Hourmant etienne Lengliné Antoine Lafarge Eric Mariotte1 2Michael Darmon12Sandrine Valade121 AP-HPHopital Saint-LouisMedical ICUParisFrance Universitéde Paris ParisFrance Hopital Charles Nicolle Medical ICURouenFrance AP-HP Hopital Saint LouisHematology DepartmentParisFrance

Background:Admission to the intensive care unit(ICU)is frequently required for patients with acute leukemia(AL)because of life-threatening complications such as intracranial hemorrhage(IH).In this study,we evaluated the impact of IH on survival and neurological outcomes in this ***:This was a single-center retrospective cohort study including adult patients with AL requiring ICU ad-mission and experiencing IH between 2002 and 2019 at Saint Louis *** type was determined according to the French-American-British *** imaging(either computed tomography or mag-netic resonance imaging)was available for all the *** primary endpoint of the study was to describe the clinical and biological characteristics and evaluate the mortality and neurological outcome of patients hospi-talized in the ICU with newly diagnosed AL and *** secondary endpoint was to identify predictive factors of IH in these ***:Thirty-five patients with AL were included,median age of the patients was 59.00(interquartile range[IQR]:36.00-66.00)***-nine patients(82.9%)had acute myeloid leukemia,including 12 patients with acute promyelocytic *** was constant,and 48.5% of patients had disseminated intravascular coagulation(DIC).At ICU admission,the median Sequential Organ Failure Assessment score was 5(IQR:3-9).The median time between AL onset and IH was 2.0(IQR:0.0-9.5)*** ICU and hospital mortality rates were 60.0%(n=21)and 65.7%(n=23),*** univariate analysis,mechanical ventilation and stupor were associated with mortality,but DIC and acute promyelocytic leukemia were *** multivariate analysis,stupor or coma was the only factor significantly associated with a poor outcome(odds ratio=8.56,95% confidence interval:2.40 to 30.46).Conclusion:IH is associated with a high mortality rate in AL patients,with stupor or coma at the onset of intracranial bleeding being independently associated with p

关键词： Acute leukemia Hematological malignancies Intracranial hemorrhage Intensive care unit Critical care

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Association between the Different Phenotypes of Polycystic Ovary Syndrome and the Outcome in in Vitro Fertilization at Human reproductive Center Paul et Chantal Biya-Yaoundé

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Open Journal of Obstetrics and Gynecology 2024年第1期14卷 18-28页

作者： Ngono Akam Vanina Ngah Minala Belinga etienne Belinga etienne Mpono Pascale Nyada Serges Onana Y. Kasia Cho Joselyne Kasia Florence Adjessa Abega Kasia Jean Marie Gynaecological Endoscopic Surgery and Human reproductive Teaching Hospital Yaoundé Cameroon Department of Gynecology and Obstetrics Faculty of Medicine and Biomedical Sciences University of Yaoundé 1 Yaoundé Cameroon

Background: In Vitro Fertilization/Intracytoplasmic Sperm Injection (IVF/ICSI) represents the final step in the management of Polycystic Ovarian Syndrome (PCOS). Our objective was to study the association between PCOS phenotypes and IVF/ICSI results in women admitted to Gynaecological Endoscopic Surgery and Human reproductive Teaching Hospital (CHRACERH). Material and Method: We carried out a cohort study with historical-prospective data collection over a period of seven years (January 2016 to March 2023) at Chracerh. PCOS patients were subdivided into 4 subgroups A, B, C and D. results: We recruited 128 patients including 64 PCOS patients divided into four phenotypes and 64 non-PCOS patients constituting the control group. Phenotype D without hyperandrogenism had used the lowest dose of gonadotropins, i.e. 1939.7 ± 454.3 IU, and had produced a greater quantity of estradiol on the day ovulation was triggered (6529.8 ± 4324.8 ng/ml). The average number of punctured follicles and mature oocytes were higher in the phenotype D group. Ovarian hyperstimulation syndrome (OHSS) occurred mainly in phenotype D (3/35), with an estimated prevalence of 2.3%. The fertilization rate seemed lower in the hyperandrogenic phenotypes A, B, C compared to the group without hyperandrogenism without significant difference (p = 0.461). The biological pregnancy rate and live birth rate were comparable between the different groups. Conclusion: Phenotype D used less dose of gonadotropins. Biological pregnancy and live birth rates were comparable between the different phenotypes.

关键词： Phenotype Polycystic Ovarian Syndrome IVF/ICSI Prognosis CHRACERH

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Vaccination and Measles Epidemic in the republic of Congo

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Open Journal of Epidemiology 2024年第1期14卷 45-55页

作者： Léa Gwladys Gangoue Yanne Mavougou Fabien Rock Niama Pembe Issamou Mayengue etienne Nguimbi National Public Health Laboratory (LNSP) Ministry of Health and Population Brazzaville Republic of Congo Cellular and Molecular Biology Laboratory (BCM) Faculty of Sciences and Techniques Marien Ngouabi University Brazzaville Republic of Congo

Measles is a highly infectious, vaccine-preventable viral disease. Often forgotten, it is potentially fatal. Its main symptoms are: fever, cough, conjunctivitis, rhinitis and skin rash. Serological diagnoses by ELISA test based on the detection of anti-measles virus immunoglobulins M and G (IgM and IgG), are used respectively for the confirmation of suspected cases notified by means of clinical signs of the disease in health structures of the twelve departments of the republic of Congo involved in the epidemiological surveillance of the disease, and for the evaluation of the immunity conferred by vaccination. During 2021, 459 suspected cases of measles were reported and sampled throughout the country, despite the administration under the Expanded Routine Immunization Program (EPI), of 2 doses of the combined measles-rubella vaccine (RR1 and RR2) in 2020. The notification rate was higher in the south of the country, more precisely in the health structures of the departments of Pointe-Noire (42%) and Brazzaville (11%). During the year 2021, 459 suspected cases of measles were notified and sampled throughout the country with a high notification rate in the south of the country, more precisely in the health structures of the Pointe-Noire departments (42%) and Brazzaville (11%). The samples consisting of human blood (serum) were sent to the National Public Health Laboratory and analyzed by various ELISA tests for the detection of anti-measles immunog-lobulins M and G. The analysis of the results obtained shows that the measles virus circulated in all departments of the country. 154 cases (33.55%) were confirmed positive by IgM ELISA and 98 positive cases (63.63%) were patients vaccinated against measles. Vaccination coverage in RR1 of [50%-95% [(first dose) as well as the lowest RR2 requency of cases positive vaccinated. The non-detection of IgG immunoglobulins in vaccinated pat

关键词： Vaccination Measles Epidemic

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Age and petrogenesis of the newly discovered Early Permian granite in the Kumtor gold field， Kyrgyz Tien-Shan

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Journal of Earth Science 2024年

作者： Kyiazbek Asilbekov Rustam Orozbaev etienne Skrzypek Christoph Hauzenberger Elena Ivleva Daniela Gallhofer Jian-Feng Gao Nikolay Pak Anatoliy Shevkunov Anatoliy Bashkirov Aizat Zhaanbaeva Institute of Geology， National Academy of Sciences of the Kyrgyz republic Institute of Earth Sciences， University of Graz State Key Laboratory of Ore Deposit Geochemistry， Institute of Geochemistry， Chinese Academy of Sciences Kumtor Gold Company CJSC

Permian intrusions are widespread in the Middle and Southern Tien Shan， with fewer occurrences in the Northern Tien-Shan. Notably， many of these intrusions are spatially associated with a variety of ore deposits， indicating a significant link between magmatic activity and mineralization processes in these areas. We studied granite samples recently recovered from drilling in the Kumtor gold field to evaluate their potential relationships with gold mineralization. We report major and trace element geochemistry， zircon U-Pb age and Hf isotope data for this so-called Kumtor granite. The Kumtor granite is metaluminous to peraluminous and belongs to the high-K and calc-alkaline series with I-type geochemical characteristics. The relatively high K2O and Na2O concentrations and low high field strength elements （HFSE） and heavy rare earth elements （HreE）， the presence of biotite within these I-type granites， together with their low zircon saturation temperatures （731–779 °C）， suggest that they were likely derived from a hydrous source formed by dehydration melting of mica-bearing， medium- to high-K metabasaltic rocks. Our zircon U-Pb dating results indicate that the Kumtor granite intruded at 293 ± 1.7 Ma， which is consistent with the age range of other Middle Tien-Shan granitoids. The zircon Hf isotopic composition is εHf（t）= –7.56 to –5.05， indicating an ancient （1.39 to 1.52 Ga） crustal origin. Petrographical， geochemical and geochronological data indicate that the Kumtor granite is similar to leuco-granites of the Terekty complex. Our results indicate that the Kumtor granite was emplaced in the early Permian in a post-collision setting and may have temporal and genetic relationships with gold mineralization.

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Theoretical Investigation on the Stability and reactivity of Imidazo [1,2-a] Pyridine N-Acylhydrazone Derivatives Using Density Functional Theory

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Computational Chemistry 2024年第1期12卷 1-23页

作者： Camara Tchambaga etienne Sangare Kassoum Dosso Ouehi Ablo Evrard Sekou Diomande Souleymane Coulibaly Siomenan Coulibali Laboratoire de Constitution et de Raction de la Matire (LCRM) de lUFR SSMT Universit Flix Houphout-Boigny Abidjan Cte dIvoire Dpartement des Sciences et Technologies Agro-industrielles (STAgI) UFR Agriculture ressources halieutiques et agro-industrie (ARHAI) Universit de San Pedro San Pedro Cte dIvoire Laboratoire des Procds Industriels de Synthse de lEnvironnement et des nergies Nouvelles (LAPISEN) Institut National Polytechnique FlixHouphout-Boigny Yamoussoukro Cte dIvoire

The reactivity and stability of seventeen (17) imidazo [1,2-a]pyridine N-acylhydrazone derivatives were investigated using density functional theory at the B3LYP/6-31+ G (d, p) level. Analysis of the molecular electrostatic potential (MEP) and determination of the dual descriptor revealed that in most cases, the nitrogen atoms of the 6-πelectron conjugation, the oxygen, and the sulfur atom are nucleophilic site. Chemical reactivity of the compounds was assessed through analysis of frontier molecular orbitals (HOMO and LUMO), energy gap (Δℰ), chemical hardness (η), and the softness (S). Consequently, the compound 9e exhibited the lowest reactivity, least electron donating, and the highest stability. This comprehensive study offers valuable insights into the chemical behavior of these derivatives, crucial for further exploration and potential applications.

关键词： N-Acylhydrazones Imidazo [1 2-a] Pyridine DFT Molecular Electrostatic Potential reactivity Stability

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