检索结果-南通市图书馆

Clean Energy 2022年第6期6卷 797-809页

作者： Younes Azelhak damien Voyer Hicham Medromi Laboratory of Research in Engineering(LRI) System Architecture Team(EAS)Hassan II University—ENSEM Casablanca 8118 Morocco EIGSI La Rochelle 17000 France 3Laboratory of Research in Engineering(LRI)System Architecture Team(EAS)Hassan II University—ENSEM Casablanca 8118Morocco

This paper proposes an advanced method for estimating numerous parameters in a wind-energy-conversion system with high precision,especially in a transient state,including the rotation speed and mechanical torque of the turbine as well as wind *** suggested approach is designed into two ***,a fourth-order Luenberger observer is proposed to take into account the significant fluctuations of the mechanical torque that can be caused by wind *** observer provides an accurate estimate of speed and mechanical torque in all weather conditions and especially when the wind is *** the same time,the wind velocity is calculated using the Luenberger observer outputs and a model of the mechanical power generated by the ***,these estimated parameters are exploited as input in a maximum-power-point tracking(MPPT)algorithm using the tip-speed ratio(TSR)to improve the sensorless strategy *** results were performed using MATLAB®/Simulink®for both wind gust and real wind *** have verified that for wind gusts with jumps ranging from 3 to 7 m/s,the new observer manages to better follow the rotation speed and the torque of the turbine compared to a usual *** addition,we demonstrated that by applying the proposed estimator in the improved TSR-MPPT strategy,it is possible to extract 3.3%more energy compared to traditional approaches.

关键词： wind velocity estimation mechanical parameters estimation MPPT algorithm wind-energy-conversion system

Endoscopic management of refractory gastrointestinal non-variceal bleeding using Histoacryl(N-butyl-2-cyanoacrylate)glue

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Gastroenterology Report 2016年第3期4卷 232-236,I0002,I0003页

作者： damien CK Loh Robert B Wilson Department of Upper Gastrointestinal Surgery Liverpool HospitalSydneyAustralia

Background:Histoacryl glue(N-butyl-2-cyanoacrylate)has well-established utility in the endoscopic management of gastrointestinal variceal *** role of Histoacryl glue in non-variceal bleeding is less clear,and there are few articles describing its use in this ***:Six patients with intractable non-variceal gastrointestinal bleeding were managed using injection of Histoacryl *** patients had previously failed conventional endostasis and/or interventional angioembolization and were not suitable for emergency salvage surgery due to serious comorbidities or unacceptable anaesthetic *** endoscopic Lipiodol-Histoacryl-Lipiodol sandwich injection technique was used in these *** clinical outcomes and complications were ***:There were four females and two males with a mean age of 55 *** lesions included gastric ulcers(n=2),duodenal ulcers(n=2),duodenal gastrointestinal stromal tumor(GIST)(n=1)and rectal ulcers(n=1).All patients had successful Histoacryl endostasis without the requirement for salvage *** was no treatment-related morbidity and no *** patients had further bleeding after initial Histoacryl endostasis,which was successfully controlled with further endoscopic Histoacryl ***:Histoacryl endostasis should be included in the treatment algorithm for refractory non-variceal gastrointestinal bleeding.

关键词： Histoacryl glue N-butyl-2-cyanoacrylate endoscopy non-variceal upper gastrointestinal bleeding

Iterative Reconstruction for Transmission Tomography on GPU Using Nvidia CUDA

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Tsinghua Science and Technology 2010年第1期15卷 11-16页

作者： damien Vintache Bernard Humbert David Brasse Institut Pluridisciplinaire Hubert Curien CNRS/IN2P323 rue du Loess BP28 67037 StrasbourgFrance

The iterative reconstruction algorithms for X-ray CT image reconstruction suffer from their high computational cost. Recently Nvidia releases common unified device architecture （CUDA）, allowing developers to access to the processing power of Nvidia graphical processing units （GPUs）, in order to perform general purpose computations. The use of the GPU, as an alternative computation platform, allows decreasing processing times, for parallel algorithms. This paper aims to demonstrate the feasibility of such an implementation for the iterative image reconstruction. The ordered subsets convex （OSC） algorithm, an iterative reconstruction algorithm for transmission tomography, has been developed with CUDA. The performances have been evaluated and compared with another implementation using a single CPU node. The result shows that speed-ups of two orders of magnitude, with a negligible impact on image accuracy, have been observed.

关键词： tomography image reconstruction parallel processing

Necroptosis, pyroptosis and apoptosis: an intricate game of cell death

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

Cellular & Molecular Immunology 2021年第5期18卷 1106-1121页

作者： damien Bertheloot Eicke Latz Bernardo S.Franklin Institute of Innate Immunity University Hospitals BonnUniversity of BonnBonnNRWGermany Department of Infectious Diseases and Immunology University of Massachusetts Medical SchoolWorcesterMAUSA German Center for Neurodegenerative Diseases BonnNRWGermany

Cell death is a fundamental physiological process in all living *** roles extend from embryonic development,organ maintenance,and aging to the coordination of immune responses and *** recent years,our understanding of the mechanisms orchestrating cellular death and its consequences on immunity and homeostasis has increased *** modalities of what has become known as‘programmed cell death’have been described,and some key players in these processes have been *** have learned more about the intricacies that fine tune the activity of common players and ultimately shape the different types of cell *** studies have highlighted the complex mechanisms tipping the balance between different cell ***,we summarize the latest discoveries in the three most well understood modalities of cell death,namely,apoptosis,necroptosis,and pyroptosis,highlighting common and unique pathways and their effect on the surrounding cells and the organism as a whole.

关键词： Apoptosis Necroptosis Pyroptosis Inflammation Survival

Fabrication of self-assembling nanofibers with optimal cell uptake and therapeutic delivery efficacy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Bioactive Materials 2017年第4期2卷 260-268页

作者： Dawei Xu damien SKSamways He Dong Department of Chemistry&Biomolecular Science Clarkson UniversityPotsdamUSA Department of Biology Clarkson UniversityPotsdamUSA

Effective strategies to fabricate finite organic nanoparticles and understanding their structure-dependent cell interaction is highly important for the development of long circulating nanocarriers in cancer *** this contribution,we will capitalize on our recent development of finite supramolecular nanofibers based on the self-assembly of modularly designed cationic multidomain peptides(MDPs)and use them as a model system to investigate structure-dependent cell penetrating *** selfassembled into nanofibers with high density of cationic charges at the fiber-solvent interface to interact with the cell ***,despite the multivalent charge presentation,not all fibers led to high levels of membrane activity and cellular *** flexibility of the cationic charge domains on self-assembled nanofibers plays a key role in effective membrane *** were found to sacrifice their dimension,thermodynamic and kinetic stability for a more flexible charge domain in order to achieve effective membrane *** increased membrane activity led to improved cell uptake of membrane-impermeable chemotherapeutics through membrane pore *** vitro cytotoxicity study showed co-administering of water-soluble doxorubicin with membrane-active peptide nanofibers dramatically reduced the IC50 by eight folds compared to drug *** these detailed structure and activity studies,the acquired knowledge will provide important guidelines for the design of a variety of supramolecular cell penetrating nanomaterials not limited to peptide assembly which can be used to probe various complex biological processes.

关键词： Supramolecular assembly Cell penetrating peptide Drug delivery Cell uptake Membrane activity

No-go decay as a novel route to restrict viral infection in plants

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Molecular Plant 2023年第3期16卷 509-510页

作者： Aude Poucleti Dominique Gagliardil damien Garcia institut de Biologie Moleculaire des Plantes CNRSUniversite de Strasbourg StrasbourgFrance

Plants use several layers of defense to detect and combat viruses(Figure 1).Specialized host-encoded receptors sense viral virulence effector proteins and induce a signal transduction cascade,leading to effector-triggered immunity(Lopez-Gomollon and Baulcombe,2022).Plants also use several RNA-based processes to seek and destroy viral *** major pathway restricting viral multiplication is RNA silencing,a widely conserved mechanism of gene extinction that uses dsRNA to produce 21 to 24 nucleotides small interfering RNAs and guide viral RNA degradation(Lopez-Gomollon and Baulcombe,2022).

关键词： immunity restrict infection

Thermal characterization of bio-based phase changing materials in decorative wood-based panels for thermal energy storage

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Green Energy & Environment 2019年第1期4卷 56-65页

作者： damien Mathis Pierre Blanchet Véronic Landry Philippe Lagière NSERC Industrial Research Chair on Ecoresponsible Wood Construction(CIRCERB) Laval University Engineering and Mechanics Institute University of Bordeaux Avenue D'Aquitaine

Decorative wood panels containing pouches of bio-based phase changing materials(PCMs) were prepared. Three different PCM mixtures were used: a blend of capric and lauric acids as well as two commercial products, Puretemp?20 and Puretemp?23(Puretemp). The panels consist of engraved Medium Density Fiberboard(MDF) filled with a plastic pouch filled with PCM. High density fiberboard(HDF) was used on top of the panels to enclose the PCM pouches. PCM mixtures were first tested by differential scanning calorimetry(DSC). Phase change temperature and total heat storage of the panels were measured for both fusion and solidification with a Dynamic Heat-Flow Meter Apparatus(DHFMA). DSC and DHFMA results were compared, allowing a better understanding of results gathered from these two techniques. DSC calibration has been revealed important when assessing PCMs. The panels present a phase change temperature and a latent heat storage suitable for buildings applications. The panel made with Puretemp?23 presented the highest energy, with 57.1 J g^(-1). Thermal cycling was conducted on the panels to investigate thermal reliability, which revealed small modifications of thermal properties for two products. For all cases, latent heat was found stable. Hygro-mechanical behavior of the panels was also evaluated as these where designed to be esthetic decorative panels. This study exposes the potential of a new type of wood-based panels loaded with PCM for thermal energy storage and brings overall knowledge about PCM products thermal characterization.

关键词： PCM Wood Biosourced Fatty acids DHFMA

Advances in functional limb reconstruction in the irradiated setting

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

Plastic and Aesthetic Research 2019年第11期6卷 1-11页

作者： Nicholas Marsden damien Grinsell Department of Plastic Surgery St Vincent's HospitalMelbourne 3065Australia

The management of extremity soft tissue sarcoma is constantly evolving, and, in recent decades, limb salvage has been the main goal. More commonly, this is being achieved with a combination of neo-adjuvant radiotherapy,followed by wide excision and soft tissue reconstruction in the form of vascularised soft tissue transfer. Although limb salvage is now readily achievable, the resultant functional disabilities following excision of major musculotendinous and neurovascular structures can be life changing. In recent years, there has been a move towards functional limb reconstruction in the form of free functioning muscle transfer. This paper reviews the advances in functional limb reconstruction in the setting of preoperative radiation and reports our experience in this challenging reconstructive field.

关键词： Sarcoma radiation functional limb reconstruction free functioning muscle transfer nerve transfer

Combining CO_(2) capture and catalytic conversion to methane

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Waste Disposal and Sustainable Energy 2019年第1期1卷 53-65页

作者： Paulina Melo Bravo damien P.Debecker Institute of Condensed Matter and Nanosciences(IMCN) UCLouvainPlace Louis Pasteur1Box L4.01.091348 Louvain-La-NeuveBelgium

Considering the global objective to mitigate climate change,import efforts are made on decreasing the net emission of CO_(2) from gas *** the one hand CO_(2) capture-for example by adsorption onto solid basic materials-allows to withdraw CO_(2) from the waste gas streams emitted by incinerators,cement manufacture plants,combustion plants,power plants,*** the second hand,CO_(2) can be converted to useful *** to methane-using appropriate heterogene-ous catalysts.A relatively innovative strategy consists in combining both technologies by designing materials and processes which can switch between capture and methanation modes *** allows treating complex waste gas effluents by selectively and reversibly capturing CO_(2),and to perform the catalytic hydrogenation in appropriate reaction *** short review presents the main strategies recently reported in the literature for such combined CO_(2) capture and methanation(CCCM)*** discuss the different types of reactor configurations and we present the formulations used in this context as adsorbent,as methanation catalysts,and as“dual functional materials”.

关键词： CO_(2)capture Methanation Sabatier reaction Catalytic hydrogenation Adsorption Methane Dual functional materials

Major gastrointestinal bleeding and antithrombotics: Characteristics and management

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 Gastroenterology 2020年第36期26卷 5463-5473页

作者： Jacques Bouget damien Viglino Quentin Yvetot Emmanuel Oger EA 7449 REPERES Pharmacoepidemiology and Health Services ResearchUniv RennesRennes 35000France Emergency Department and Mobile Intensive Care Unit-HP2 Laboratory INSERM U1042 University Grenoble AlpsLa Tronche 38700France Emergency Department CHU RennesRennes 3500France EA 7449 REPERES Universitéde Rennes 1Rennes 35000France

BACKGROUND There are few reports on major gastrointestinal(GI)bleeding among patients receiving an *** To describe clinical characteristics,bleeding locations,management and inhospital mortality related to these *** Over a three-year period,we prospectively identified 1080 consecutive adult patients admitted in two tertiary care hospitals between January 1,2013 and December 31,2015 for major GI bleeding while receiving an *** bleeding events were medically *** characteristics,causative lesions,management and fatalities were *** distribution of antithrombotics prescribed was compared across the bleeding lesions *** Of 576 patients had symptoms of upper GI bleeding and 504 symptoms of lower GI *** cause was identified for 383(35.5%)***-duodenal ulcer was the first causative lesion in the upper tract(209 out of 408)and colonic diverticulum the first causative lesion in the lower tract(120 out of 289).There was a larger proportion of direct oral anticoagulant use among patients with lower GI than among those with upper GI lesion locations(P=0.03).There was an independent association between gastro-duodenal ulcer and antithrombotic use(P=0.03),taking account of confounders and proton pump inhibitor *** wise comparisons pointed to a difference between vitamin K antagonist,direct oral anticoagulants,and antiplatelet agents in monotherapy vs dual antiplatelet *** We showed a higher rate of bleeding lesion identification and suggested a different pattern of antithrombotic exposure between upper and lower GI lesion locations and between gastro-duodenal ulcer and other identified upper GI causes of *** was similar across antithrombotics and in-hospital mortality was low(5.95%).

关键词： Real-world setting Emergency Bleeding Mortality Antithrombotics Management