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The potential value of intravascular ultrasound imaging in diagnosis of aortic intramural hematoma

Geodesy and Geodynamics 2024年第1期

作者： Xianjie Li jean-pierre Barriot Bernard Ducarme Marania Hopuare Yidong Lou

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Journal of Geriatric Cardiology 2011年第4期8卷 224-229页

作者： Wei Hu Francois Schiele Nicolas Meneveau Marie-France Seronde pierre Legalery jean-Francois Bonneville Sidney Chocron jean-pierre Bassand Department of Cardiology Min Hang District Central HospitalShanghai 201100China Department of Cardiology University Hospital Jean MinjozBesançon 25000France Department of Radiology University Hospital Jean MinjozBesançon 25000France Department of Cardiac Surgery University Hospital Jean MinjozBesançon 25000France

Objective To evaluate the potential value of intravascular ultrasound(IVUS)imaging in the diagnosis of aortic intramural hematoma(AIH).Methods From September 2002 to May 2005,a consecutive series of 15 patients with suspected aortic dissection(AD)underwent both IVUS imaging and spiral computed tomography(CT).Six patients diagnosed as acute type B AIH by CT or IVUS composed the present study *** The study group consisted of five males and one female with mean age of 66 years *** of them had chest or back *** one patient,CT omitted a localized AIH and an associated penetrating atherosclerotic ulcer(PAU),which were detected by *** another patient,CT mistaken a partly thrombosed false lumen as an AIH,whereas IVUS detected a subtle intimal tear and slow moving blood in the false *** the four rest patients,both CT and IVUS made the diagnosis of AIH,however,IVUS detected three PAUs in three of them,only one of them was also detected by CT,and two of them escaped initial CT and were confirmed by follow up CT or magnetic resonance *** IVUS imaging is a safe examination and has high accuracy in the diagnosis of AIH,particularly for diagnosing localized AIH,distinguishing AIH with thrombosed classic AD and detecting accompanied small PAUs.

关键词： intravascular ultrasound diagnosis aortic intramural hematom

Recent Advances on Graphene Quantum Dots for Electrochemical Energy Storage Devices

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Energy & Environmental Materials 2022年第1期5卷 201-214页

作者： Noura Zahir pierre Magri Wen Luo jean Jacques Gaumet Philippe Pierrat CNRS L2CM UMR 7053 Universit e de Lorraine LCP-A2MC EA4632 Institut Jean Barriol Universit e de Lorraine State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technologywuhan 430070china

Graphene quantum dots(GQDs)which are nanofragments of graphene with an average size between 2 and 50 nm have attracted much attention due to their outstanding properties such as high conductivity,high surface area,and good solubility in various *** combine the quantum confinement and edges effects and the properties of ***,GQDs offers a broad range of applications in various fields(medicine,energy conversion,and energy storage devices).This review will present the recent research based on the introduction of GQDs in batteries,supercapacitors,and microsupercapacitors as electrodes materials or mixed with an active material as an auxiliary ***,discussed on selected examples,summarize the electrochemical performances and finally,challenges and perspectives are recalled for the subsequent optimization strategy of electrode *** review is expected to appeal a broad interest on functional GQDs materials and promote the further development of high-performance energy storage device.

关键词： energy storage graphene quantum dots lithium ion batteries sodium ion batteries supercapacitor

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Clinical Presentation, Therapeutic Aspects and Results of Urogental Prolapse in Yaounde

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Open Journal of Urology 2024年第2期14卷 83-94页

作者： Junior Barthelemy Mekeme Mekeme pierre Joseph Fouda Marie Josiane Ntsama Essomba jean Cedric Fouda Marie Salome Eko’o Neme Marcel Junior Yon Mekeme Achille Y. Kpanou Bright Che Awondo Philip Fernandez Owon’Abessolo Marcella Biyouma Achille Aurele Mbassi Robinson Mbu Robinson Fru Angwafo III Department of Urology and Andrology Yaounde Central Hospital Yaounde Cameroon Faculty of Medicine and Biomedical Sciences University of Yaounde I Yaounde Cameroon Department of Surgery Yaounde University Teaching Hospital Yaounde Cameroon Faculty of Medicine and Pharmaceutical Sciences Douala Douala Cameroon Department of Urology and Andrology Laquintini Hospital Douala Douala Cameroon Department of Obstetrics and Gynaecology Yaounde Obstetrics Gynaecology and Pediatrics Hospital Yaounde Cameroon

Introduction: Urogenital prolapse is the descent of one or more elements of the abdominal-pelvic contents into the vaginal cavity. The anterior, middle and posterior anatomical compartments may be involved giving rise to several types of genital prolapse. However, there are various therapeutic modalities ranging from observational procedures to surgery. In Yaounde, urogenital prolapse appears to be a rare clinical entity, and its treatment has not been clearly stated. There is limited data about this subject in our context. Our aim was to study the clinical and therapeutic aspects of urogenital prolapse in Yaounde. Methods: We conducted a descriptive cross-sectional study with retrospective data collection at the Yaounde Gynaecological Obstetric and Pediatric Hospital (YGOPH) and the Yaounde Central Hospital (YCH) over a period of 05 months (from February 2022 to June 2022). All women aged ≥30 years and all women with documented urogenital prolapse admitted to the maternity and urology departments of these two health facilities were included. Data were collected using a structured questionnaire. Data was analyzed using IBM SPSS (statistical package for social sciences) software version 23.0 and the data were reported as mean, standard deviation, frequencies and percentages. Results: A total of 50 patients were recruited;the mean age was 45.8 ± 17 years. The age range was from 21 to 72 years. Majority of the patients were aged more than 55 years (32%). Most of the patients attended primary education (48%). Forty percent of the patients were housewives. The majority of the patients were from West Cameroon (26%). The most common reason for consultation was pelvic heaviness (54%). The most prevalent clinical sign was cystocele (56%), followed by hysterocele (54%). According to the Baden Walker classification, one-third of the patients were classified as first degree (36%). More than half (58%) of patients had the condition located at the first stage. Surgery was perform

关键词： Urogenital Prolapse Cystocele Hysterocele Clinical Surgery

Preliminary investigation of late Mughal period wall paintings from historic monuments of Begumpura,Lahore

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Frontiers of Architectural Research 2018年第4期7卷 465-472页

作者： Saima Gulzar jean-pierre Burg Department of Architecture University of Management and TechnologyLahore 54770Pakistan Swiss Federal Institute of Technology Zurich Geological InstituteNO E 67Sonneggstrasse 5CH-8092 ZurichSwitzerland

Deterioration of wall paintings caused by environmental pollution is a worldwide problem especially with reference to the present industrial era. The alarming incremental trend of pollution in Pakistan has threatened the cultural assets. The deposition of pollutants on historic fabric is the main source of chemical and mineralogical alterations of wall paintings. The present diagnostic study investigated the main deterioration mechanisms affecting wall paintings of the late Mughal period, in the Begumpura Complex, in Lahore. Micro samples were characterized by XRD and SEM-EDS to identify deterioration products and understand deterioration mechanisms prevalent at the heritage site. The results revealed that red ocher, green earth and calcium carbonate were initially used for red, green and white pigments, respectively. Sodium chloride (halite, NaCl) and gypsum (CaSO4·2H2O) were identified as the main deterioration products.

关键词： Deterioration Wall Painting Begumpura Lahore

Methane-to-chemicals:a pathway to decarbonization

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National Science Review 2023年第9期10卷 56-71页

作者： Nikolai Nesterenko Izabel C.Medeiros-Costa Edwin B.Clatworthy Hugo Cruchade Stanislav V.Konnov jean-pierre Dath jean-pierre Gilson Svetlana Mintova Total Energies One Tech Belgium Zone Industrielle C Laboratoire Catalyse et Spectrochimie(LCS) ENSICAENCNRSNormandie Université

The utilization of methane for chemical production,often considered as the future of petrochemistry,historically could not compete economically with conventional processes due to higher investment *** sustainability and decarbonization of the downstream industry by integration with a methane-to-chemicals process may provide an opportunity to unlock the future for these ***-to-chemicals is an efficient tool to boost the decarbonization potential of renewable *** the current implementation of carbon capture utilization and storage(CCUS) technologies is of great importance for industrial decarbonization,a shift to greener CO2-free processes and CO2utilization from external sources for manufacturing valuable goods is highly *** review outlines potential options for how a methane-to-chemicals process could support decarbonization of the downstream industry.

关键词： methane chemicals pathways decarbonization

Optimal Control of Hepatitis B in a sub-Saharan African rural area

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Applied Mathematics(A Journal of Chinese Universities) 2023年第4期38卷 523-544页

作者： jean pierre II KOUENKAM Joseph MBANG Gilbert CHENDJOU Yves EMVUDU Department of Mathematics Faculty of ScienceUniversity of Yaounde IP.O.Box 812 YaoundeCameroon

In this paper,we ameliorate the model proposed in[13],by incorporating the influence of hepatitis B e antigen(HBeAg)status of mothers on vertical *** use the improved model to fit reported HBV new infections in the Zhejiang Province of *** to predict the course of the Hepatitis B(HBV)infection in this Chinese area,and in Tokombere,located in sub-Saharan Africa(SSA).Furthermore,we apply optimal control techniques in view to re-examine the effects of the newborn vaccination,the universal vaccination and the treatment of chronic carriers in preventing the HBV *** results show that treatment slightly steps in the optimal strategy,while immunisation is an effective *** the other hand,they indicate that the control measures and immunization programs implemented in Zhejiang Province are ***,they suggest that in SSA,a package of several policies centred on birth dose vaccination should be implemented.

关键词： hepatitis B virus chronic carriers vaccine treatment Pontryagin

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Synthesis and purification of long copper nanowires. Application to high performance flexible transparent electrodes with and without PEDOT：PSS

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Nano Research 2014年第3期7卷 315-324页

作者： Celine Mayousse Caroline Celle Alexandre Carella jean-pierre Simonato CEA LITEN / DTNM / LCRE 17 rue des Martyrs 38054 Grenoble France

We demonstrate the hydrothermal synthesis of long copper nanowires based on a simple protocol. We show that the purification of the nanowires is very important and can be achieved easily by wet treatment with glacial acetic acid. Fabrication of random networks of purified copper nanowires leads to flexible transparent electrodes with excellent optoelectronic performances （e.g., 55 Ω/sq. at 94% transparency）. The process is carried out at room temperature and no post-treatment is necessary. Hybrid materials with the conductive polymer PEDOT：PSS show similar properties （e.g., 46 Ω/sq, at 93% transparency）, with improved mechanical properties. Both electrodes were integrated in capacitive touch sensors.

关键词： copper nanowires transparent electrodes PEDOT:PSS touch sensor metallic nanowires

Flow Dynamics during the Hydrocarbon Exploitation for Prevention and Management of Water Venues in Oil Field: A Study Case of Crystal Field in Badila/Chad

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Hydraulic and mechanical properties of wax-coated sands

International Journal of Geosciences（地球科学国际期刊） 2024年第5期 433页

作者： Issakha Tidjani Djimet Huguette Christiane Emvoutou Nicodème Djiedeu jean-pierre Nguenang

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Journal of Central South University 2013年第12期20卷 3667-3675页

作者： Jesmani Mehrab Bardet jean-pierre Jabbari Nima Kamalzare Mehrad Department of Civil Engineering Imam Khomeini International University Sonny Astani Department of Civil and Environmental Engineering Viterbi School of Engineering Department of Civil and Environmental Engineering Rensselaer Polytechnic Institute

Wax-coated sands are a new category of synthetic soils, which are gradually becoming a reliable construction material. Because of their valuable drainage ability and mechanical properties, wax coated sandy soils are specifically applicable to pavement construction of horseracing tracks and sport fields. Although the mechanical and hydraulic properties of these synthetic soils are well-proven, there is still a lack of studies on how the soil samples behave differently when mixing with different wax fractions. Adding the wax affects permeability and compressibility of pure sand. Intensity of influences is a function of weight percentage of wax that has been added, and other physical and environmental factors. The effects of wax content on hydraulic properties(permeability), and mechanical properties(stress strain behavior, compressibility) of sandy soils based on a series of experimental efforts were investigated. Obtained experimental results infer that increasing the amount of wax up to 6% causes an about 50% increase in permeability, mainly because of the significant effect of wax in lowering the friction along with covering and filling the angular parts of particles' surfaces and forming rounded particles. In addition, wax-coated sands show a 20% to 60% decrease in confined compression modulus compared to non wax-coated sands.

关键词： wax-coated sand confined compression coefficient permeability compressibility stress-strain behavior

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