检索结果-南通市图书馆

Optical probing of ultrafast laser-induced solid-to-overdense-plasma transitions

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2024年第5期13卷 973-984页

作者： Yasmina Azamoum Georg Alexander Becker Sebastian Keppler Guillaume Duchateau Stefan Skupin mickael Grech Fabrice Catoire Sebastian Hell Issa Tamer Marco Hornung Marco Hellwing Alexander Kessler Franck Schorcht Malte Christoph Kaluza GSI Helmholtzzentrum für Schwerionenforschung Planckstr.164291 DarmstadtGermany. Helmholtz Institute Jena Fröbelstieg 307743 JenaGermany. Institute of Optics and Quantum Electronics Friedrich-SchillerUniversität JenaMax-Wien-Platz 107743 JenaGermany. CEA-CESTA 15 Avenue des SablièresCS6000133116 Le BarpCedexFrance Institut Lumière Matière UMR 5306-CNRSUniversitéde Lyon 169622 VilleurbanneFrance. LULI CNRSCEASorbonne UniversitéInstitut Polytechnique de ParisPalaiseauFrance. Universitéde Bordeaux-CNRS-CEA CELIAUMR 5107 TalenceFrance

Understanding the solid target dynamics resulting from the interaction with an ultrashort laser pulse is a challenging fundamental multi-physics problem involving atomic and solid-state physics,plasma physics,and laser *** of the initial interplay of the underlying processes is essential to many applications ranging from lowpower laser regimes like laser-induced ablation to high-power laser regimes like laser-driven ion *** the properties of the so-called pre-plasma formed as the laser pulse’s rising edge ionizes the target is complicated from the theoretical and experimental point of view,and many aspects of this laser-induced transition from solid to overdense plasma over picosecond timescales are still open *** the one hand,laser-driven ion acceleration requires precise control of the pre-plasma because the efficiency of the acceleration process crucially depends on the target properties at the arrival of the relativistic intensity peak of the *** the other hand,efficient laser ablation requires,for example,preventing the so-called“plasma shielding”.By capturing the dynamics of the initial stage of the interaction,we report on a detailed visualization of the pre-plasma formation and ***-thin diamond-like carbon foils are shown to transition from solid to plasma during the laser rising edge with intensities<10^(16)W/cm^(2).Single-shot near-infrared probe transmission measurements evidence sub-picosecond dynamics of an expanding plasma with densities above 10^(23)cm^(−3)(about 100 times the critical plasma density).The complementarity of a solid-state interaction model and kinetic plasma description provides deep insight into the interplay of initial ionization,collisions,and expansion.

关键词： laser acceleration solid

Exploring the effects of dietary inulin in rainbow trout fed a high‑starch,100%plant‑based diet

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2024年第2期15卷 713-732页

作者： Raphaël Defaix Jep Lokesh Laura Frohn mickael Le Bechec Thierry Pigot Vincent Veron Anne Surget Sandra Biasutti Frederic Terrier Sandrine Skiba-Cassy Jerome Roy Stephane Panserat Karine Ricaud Universite de Pau Et Des Pays de L’Adour E2S UPPAINRAENUMEASaint‑Pee‑Sur‑NivelleFrance Universite de Pau Et Des Pays de L’Adour E2S UPPACNRSIMT Mines AlesIPREMPauFrance Universite de Pau Et Des Pays de L’Adour E2S UPPAIUT des Pays de l’AdourDepartement Genie BiologiqueMont de MarsanFrance.

Background High dietary carbohydrates can spare protein in rainbow trout(Oncorhynchus mykiss)but may affect growth and ***,a prebiotic,could have nutritional and metabolic effects,along with anti-inflammatory properties in teleosts,improving growth and *** tested this hypothesis in rainbow trout by feeding them a 100%plant-based diet,which is a viable alternative to fishmeal and fish oil in aquaculture *** a two-factor design,we examined the impact of inulin(2%)as well as the variation in the carbohydrates(CHO)/plant protein ratio on rainbow *** assessed the influence of these factors on zootechnical parameters,plasma metabolites,gut microbiota,production of short-chain fatty acids and lactic acid,as well as the expression of free-fatty acid receptor genes in the mid-intestine,intermediary liver metabolism,and immune markers in a 12-week feeding *** The use of 2%inulin did not significantly change the fish intestinal microbiota,but interestingly,the high CHO/protein ratio group showed a change in intestinal microbiota and in particular the beta diversity,with 21 bacterial genera affected,including Ralstonia,Bacillus,and 11 lactic-acid producing *** were higher levels of butyric,and valeric acid in groups fed with high CHO/protein diet but not with *** high CHO/protein group showed a decrease in the expression of pro-inflammatory cytokines(il1b,il8,and tnfa)in liver and a lower expression of the genes coding for tight-junction proteins in mid-intestine(tjp1a and tjp3).However,the 2%inulin did not modify the expression of plasma immune ***,inulin induced a negative effect on rainbow trout growth performance irrespective of the dietary *** With a 100%plant-based diet,inclusion of high levels of carbohydrates could be a promising way for fish nutrition in aquaculture through a protein sparing effect whereas the supplementation of 2%inulin does not appear to improve the use of CHO wh

关键词： Aquaculture Fish nutrition Gut microbiota Immune markers Intermediary metabolism Inulin Prebiotic Rainbow trout Short-chain fatty acids

Distribution of Atmospheric Pollution in Southern Benin

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Open Journal of Air Pollution 2024年第1期13卷 23-55页

作者： Dossou-Gbete Sèdami Codjo Joël Kpadonou Dominique Gbaguidi An Magloire Elegbede Vitalique Saizonou Kpèssou Virtus mickael Youssao Abdou Karim Alassane Dovonon Firmin Léonce Vodounnon Armand Doctoral School of Exact and Applied Sciences University of Abomey-Calavi (UAC) Abomey-Calavi Benin Ecotoxicology and Quality Study Research Unit Applied Chemistry Study and Research Laboratory Department of Chemical Engineering-Processes (GC-P) Polytechnic School of Abomey-Calavi University of Abomey-Calavi Abomey-Calavi Benin Africa Synergy Group Plus Cotonou Benin

This study focuses on air quality in southern Benin in order to show public authorities what the Beninese populations are exposed to for efficient decision-making. Two sampling campaigns were carried out, one in the wet period and the other in the dry season. The measurements were taken using a monitor called an “Air Quality Monitor”. For data processing, the multiple comparison methods of Dun (1961) and the Wilcoxon test were used. To maintain legitimacy, all spatial data were included in the official cartographic repository of Benin: WGS 1984, Transverse Mercator Universe Projection (UTM), Zone 31 North. The Moran statistic was used to measure the levels of spatial autocorrelation of the variables studied and to test the significance. In order to locate the spatial subsets, the local spatial association indices of Anselin Local Moran and Getis-Ord, Gi* were used. In terms of results, on the 13 monitoring sites and the 8 parameters chosen to determine air quality, we do not note any significant inter-seasonal difference. Of the eight parameters, only three parameters present spatial autocorrelation leading to predictions of ambient air quality over the entire study area based on the distance separating the points, namely, PM2.5, PM10 and ambient air quality index (AQI). The localities affected by atmospheric pollution in South Benin are located in the south-western part of Benin, headed by Cotonou, which is heavily polluted by CO2, TCOV, PM10 and PM2.5.

关键词： Spatial Distribution Atmospheric Pollutants Southern Benin

Epidemio-Clinical-Histopathological Aspects and Therapeutics of Squamous Cell Carcinoma of the Conjunctival at the University Hospital Center of Bouake

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Ophthalmology 2024年第2期14卷 159-167页

作者： Philippe Emile France Koffi Bile Pierre Windinmanegde Djiguimde Gossé François Diomandé Zana Diabate Kouassi Franck-Hermann Koffi Liliale Ella Godé Ange mickael Goule Opeyemi Babayeju Yves Ouattara Ibrahim Abib Diomande Ophthalmology Department University Hospital Center Bouake C&#244te d&#8217Ivoire Ophthalmology Department University Hospital Center Bogodogo Ouagadougou Burkina Faso

Introduction: Squamous cell carcinoma of the conjunctiva is one of the most common malignancies in the elderly. Purpose: To describe the specific aspects of squamous cell carcinoma of the conjunctiva and to determine the therapeutic modalities. Materials and Methods: Descriptive cross-sectional retrospective study carried out at the University Hospital Center of Bouake over a period of 9 years (From January 2015 to December 2023). We identified all malignant oculo-adnexal and orbital tumors whose histopathological diagnosis was confirmed;monitoring the sorting of squamous cell carcinomas of the conjunctiva among these cancers and studying the different parameters linked to them. Results: The average age of patients is 44.3 years. Male predominance with a sex ratio of 1.12. HIV was the majority ATCD with 64.7%. The main reason for consultation was exophthalmos (36.11%). The average consultation time was 10 months 13 days. Invasive differentiated conjunctival squamous cell carcinoma was predominant at 55.56%. Enucleation was the most performed surgical method. Conclusion: Squamous cell carcinoma of the conjunctiva is a malignant ocular tumor of the elderly whose frequency increases in young adults infected with HIV-AIDS. Invasive differentiated forms are increasingly encountered, limiting treatment to mutilating surgery.

关键词： Malignant Tumor Ocular Carcinoma Conjunctiva

The medical treatment of cardiogenic shock

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Intensive Medicine 2023年第2期3卷 114-123页

作者： mickael Lescroart Benjamin Pequignot Dany Janah Bruno Levy Service de Médecine Intensive et Réanimation Brabois CHRU NancyPole Cardio-Médico-ChirurgicalVandoeuvre-les-Nancy 54511France INSERM U1116 Facultéde MédecineVandoeuvre-les-Nancy 54511France Universitéde Lorraine Vandoeuvre-les-Nancy 54000France

Cardiogenic shock (CS) is a leading cause of mortality worldwide. CS presentation and management in the current era have been widely depicted in epidemiological studies. Its treatment is codified and relies on medical care and extracorporeal life support (ECLS) in the bridge to recovery, chronic mechanical device therapy, or transplantation. Recent improvements have changed the landscape of CS. The present analysis aims to review current medical treatments of CS in light of recent literature, including addressing excitation–contraction coupling and specific physiology on applied hemodynamics. Inotropism, vasopressor use, and immunomodulation are discussed as pre-clinical and clinical studies have focused on new therapeutic options to improve patient outcomes. Certain underlying conditions of CS, such as hypertrophic or Takotsubo cardiomyopathy, warrant specifically tailored management that will be overviewed in this review.

关键词： Cardiogenic shock Etiology Epidemiology Medical treatment Monitoring

Modelling of photovoltaic production and electrochemical storage in an autonomous solar drone

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

eScience 2022年第2期2卷 235-241页

作者： mickael Cosson Benjamin David Ludovic Arzel Philippe Poizot Ahmed Rhallabi Nantes Universite CNRSInstitut des Materiaux de Nantes Jean Rouxel2 rue de la Houssiniere44322NantesFrance XSun 1 Route de la Croix Moriau44350GuerandeFrance

A simple,efficient simulator has been developed to predict the generation of photovoltaic energy and its storage in Li-ion batteries,for an autonomous drone with four wings covered by solar panels based on thin-film gallium arsenide photovoltaic cells(III–V).This simulator allows prediction of the effective photovoltaic power produced by the solar panels as well as the battery pack voltage when the drone is *** parameters such as irra-diance,sun inclination angles,and drone Euler angles are considered as input *** measured photovoltaic power and battery pack voltage are in good agreement with the simulated values,making practical use by the XSun company *** parametric study shows the effects of climatic and geographic conditions on drone *** optimal weather conditions on a sunny day,drone flight can last 12 h.

关键词： Unmanned aerial vehicle Drone flight simulator Simulation Energy storage Photovoltaic energy

Beta-blockers in septic shock: What is new?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Intensive Medicine 2022年第3期2卷 150-155页

作者： mickael Lescroart Benjamin Pequignot Antoine Kimmoun Thomas Klein Bruno Levy Service de Médecine Intensive et Réanimation Brabois CHRU NancyPôle Cardio-Médico-ChirurgicalUniversity Hospital of Nancy-BraboisRue du MorvanVandoeuvre-les-Nancy 54511France INSERM U1116 Facultéde MédecineVandoeuvre-les-Nancy 54511France Universitéde Lorraine Nancy 54000France

The use of beta(β)-blockers during septic shock aimed at countering peripheral adrenergic stress may be justified by the early reduction in deleterious effects resulting from sympathetic overactivation,and could improve the prognosis of patients in septic *** studies have demonstrated either a maintenance or increase in cardiac output(CO)despite the decrease in heart rate(HR)associated with improved myocardial *** mechanism by which𝛽-blockers alter hemodynamics in septic shock is debated;however,preclinical and clinical data show that𝛽-blockers are safe when started at a low *** publications(2019-2021)on adrenergic𝛽1 receptor antagonists used in septic shock indicate that esmolol and landiolol should not be used in the early *** there is no optimal timing for their administration,a minimum of 12 h after the initiation of vasopressor therapy in stabilized euvolemic patients is a reasonable *** should have a normal cardiac function,although a slight depression is compatible with landiolol use under hemodynamic *** titration in patients who remain tachycardic is preferable to rapid *** used to decrease HR,landiolol is also effective in reducing the incidence of new *** of a well-performed and well-powered randomized controlled trial(RCT)demonstrating a positive effect on survival-or at least on hard surrogates such as the incidence/duration of organ failure-are pending.

关键词： Septic shock Adrenergic𝛽β_(1)receptor antagonists Norepinephrine

Multimodal treatment in oligometastatic gastric cancer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Oncology 2022年第2期14卷 434-449页

作者： mickael Chevallay Charles-Henri Wassmer Pouya Iranmanesh Minoa K Jung Stefan P Mönig Division of Digestive Surgery Geneva University Hospital and Faculty of MedicineGeneva 1205GenèveSwitzerland

Gastric cancer is generally diagnosed at an advanced stage,especially in countries without screening ***,the metastatic stage was synonymous with palliative management,and surgical indications were only for symptomatic ***,this therapeutic option is associated with poor prognosis.A subgroup of patients with limited metastatic disease could benefit from intensive treatment.A combination of chemotherapy,immunotherapy,and targeted therapy could help either maintain a resectable state for oligometastatic disease or diminish the metastasis size to obtain a complete resection *** latter strategy is known as conversion therapy and has growing evidence with favorable *** approach of metastatic disease could prolong survival in selected *** challenge for the surgeon and oncologist is to identify these specific patients to offer the best multimodal *** review in this article the actual evidence for the treatment of oligometastatic gastric cancer with curative intent.

关键词： Gastric cancer Radiotherapy Chemotherapy Multimodal treatment Oligometastatis Immunotherapy

Highly integrated photonic crystal bandedge lasers monolithically grown on Si substrates

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Optics Letters 2022年第4期20卷 29-32页

作者： Yaoran Huang Taojie Zhou Mingchu Tang Guohong Xiang Haochuan Li mickael Martin Thierry Baron Siming Chen Huiyun Liu Zhaoyu Zhang School of Science and Engineering and Shenzhen Key Laboratory of Semiconductor Lasers The Chinese University of Hong KongShenzhen(CUHKSZ)Shenzhen 518172China Department of Electronic and Electrical Engineering University College LondonLondon WC1E 7JEUK Universite Grenoble Alpes CNRSCEA-LETIMINATECLTMF-38054 GrenobleFrance

Monolithic integration of Ⅲ-Ⅴ lasers with small footprint, good coherence, and low power consumption based on a CMOS-compatible Si substrate have been known as an efficient route towards high-density optical interconnects in the photonic integrated circuits. However, the material dissimilarities between Si and Ⅲ-Ⅴ materials limit the performance of monolithic microlasers. Here, under the pumping condition of a continuous-wave 632.8 nm He–Ne gas laser at room temperature, we achieved an InAs/GaAs quantum dot photonic crystal bandedge laser, which is directly grown on an on-axis Si(001) substrate, which provides a feasible route towards a low-cost and large-scale integration method for light sources on the Si platform.

关键词： lasers bandedge photonic crystal monolithic integration quantum dots silicon substrate