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排序方式: 共有880条查询结果,搜索用时 781 毫秒
871.
Alexandre Leblanc Alain Malesys Antoine Lavie 《Engineering Analysis with Boundary Elements》2012,36(4):520-526
This paper discusses the efficiency of several Compactly Supported Radial Basis Functions (CSRBFs) for the eigenanalysis of 3D acoustic cavities using the Particular Integral Method. Starting with the two most popular CSRBF families due to Wendland and Wu, a third family proposed by Buhmann is suggested. Results on rectangular parallelepiped highlight the benefit of CSRBFs compared to the classical conical function, especially when dealing with cavities discretized by few elements. On the other hand, when the mesh is refined, numerical difficulties arise and particular attention should be paid to the order of the employed CSRBF. Indeed, and while the conical function is likely to be the most robust function, high-order CSRBFs should be avoided. However, the proposed Buhmann's functions appear to bring significant improvements on eigenanalysis when compared to their Wendland and Wu counterparts. 相似文献
872.
Prof. Vlasta Bonačić-Koutecký Dr. Xavier Le Guével Dr. Rodolphe Antoine 《Chembiochem : a European journal of chemical biology》2023,24(4):e202200524
Luminescent gold nanoclusters are rapidly gaining attention as efficient theranostic targets for imaging and therapeutics. Indeed, their ease of synthesis, their tunable optical properties and tumor targeting make them potential candidates for sensitive diagnosis and efficacious therapeutic applications. This concept highlights the key components for designing gold nanoclusters as efficient theranostics focusing on application in the field of oncology. 相似文献
873.
The present paper discusses the dissolution of cobalt-bearing minerals from a copper-cobalt ore using probabilistic models where a priori and a posteriori knowledge of leaching are used to predict the dissolution of cobalt-bearing minerals in a sulphuric acid medium in the presence of a reducing agent. Priorly, the dissolution of cobalt-bearing minerals depends on their mineralogy, leading to the use of FeSO4 as a reducing agent for the trivalent (Co3+) form of cobalt (CoOOH). A posteriori, the dissolution of Co3+ is improved by the presence of ferrous ions, resulting from the dissolution of Fe-bearing minerals, including Fe from Co(Fe)OOH. The results showed that the predictive-oriented probabilistic graphic models based on the Bayesian approach, in combination with the design of the experiment data, made it possible to model the leaching of cobalt-bearing minerals. The results from the design of the experiment using the experimental tree methodology associated with the optimization of the multiple responses in a multiple input for a multiple output set-up derived the following optimized parameters: 60°C for the temperature (T), 850 rpm for the agitation, 40% for the solid percentage, 1.5 for the pH, and 4 g/L for the concentration of the Fe2+ ion. The cobalt dissolution yield obtained was 89.95%. The analysis of the dependence between the random variables only (P(Fe2+|T), P(pH|T), and P(Fe2+|pH)) and the dependence between the random variables and the responses (P(Co-yield|pH, Eh)) allowed the construction of two Bayesian networks, respectively, with and without posterior knowledge. For the Bayesian network with posteriori knowledge, the {5–2} structure was found to be the most appropriate arrangement. The model predicted a cobalt yield value, and the experimental value indicated a correlation coefficient (R2) of 0.861. 相似文献
874.
Dr. Eleonora Diamanti Dr. Mostafa M. Hamed Antoine Lacour Patricia Bravo Dr. Boris Illarionov Prof. Dr. Markus Fischer Dr. Matthias Rottmann Dr. Matthias Witschel Prof. Dr. Anna K. H. Hirsch 《ChemMedChem》2022,17(5):e202100679
The enzymes of the 2-C-methylerythritol-d -erythritol 4-phosphate (MEP) pathway (MEP pathway or non-mevalonate pathway) are responsible for the synthesis of universal precursors of the large and structurally diverse family of isoprenoids. This pathway is absent in humans, but present in many pathogenic organisms and plants, making it an attractive source of drug targets. Here, we present a high-throughput screening approach that led to the discovery of a novel fragment hit active against the third enzyme of the MEP pathway, PfIspD. A systematic SAR investigation afforded a novel chemical structure with a balanced activity–stability profile ( 16 ). Using a homology model of PfIspD, we proposed a putative binding mode for our newly identified inhibitors that sets the stage for structure-guided optimization. 相似文献
875.
Granular Matter - We study the local structural changes along the jamming transitions in asymmetric bidisperse granular packings. The local structure of the packing is assessed by the contact... 相似文献
876.
Antoine Picon 《Architectural Design》2010,80(3):94-99
In the concluding article of the main section of this issue, Antoine Picon evokes the earlier meaning of territory for administrators, architects and engineers, as lands that were integrated into nations or colonies by the early modern European countries. Picon traces how 18th- and 19th-century perceptions of territory with an emphasis on administrative separation fed into an attitude of both distance and sensitivity to landscape, as exemplified by the Romantic movement in painting and literature; a heritage that continued into the 20th century in architecture with its emphasis on rationalisation. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献
877.
Charles de Kergariou Frédéric Demoly Adam Perriman Antoine Le Duigou Fabrizio Scarpa 《Advanced functional materials》2023,33(6):2210353
In recent years, 4D printing has allowed the rapid development of new concepts of multifunctional/adaptive structures. The 4D printing technology makes it possible to generate new shapes and/or property-changing capabilities by combining smart materials, multiphysics stimuli, and additive manufacturing. Hygromorphs constitute a specific class of new smart materials where their properties and morphing capabilities are dependent on the surrounding humidity, which drives actuation. Although multiple efforts have been made to fabricate hygromorph demonstrators, a comprehensive design process to produce hygromorphs by multiple 4D printing techniques is not yet available. The broad aim of this review and concept paper is to i) highlight existing scientific and technology gaps in the field of 4D-printed hygromorphs, ii) identify tools existing in other research fields for filling those gaps, and iii) discuss a series of guidelines for tackling future challenges and opportunities to develop 4D-printed composite hygromorph materials and related manufacturing processes. Accordingly, this review describes the materials and additive manufacturing techniques used for hygromorph composite fabrication. Moreover, the relevant parameters that control actuation, the models selection and performance, the design methods and the actuation measurements for customized 4D-printed hygromorph materials, are discussed. 相似文献
878.
This paper describes the LINPACK Benchmark and some of its variations commonly used to assess the performance of computer systems. Aside from the LINPACK Benchmark suite, the TOP500 and the HPL codes are presented. The latter is frequently used to obtained results for TOP500 submissions. Information is also given on how to interpret the results of the benchmark and how the results fit into the performance evaluation process. Copyright © 2003 John Wiley & Sons, Ltd. 相似文献
879.
Beleuk à Moungam Lynn Myllyam Lemougna Patrick Ninla Kaze Rodrigue Cyriaque Mohamed Hawa Deutou Nemaleu Juvenal Giogetti Billong Ndigui Kamseu Elie Mvondo-Ze Antoine David Tonle Kenfack Ignas 《SILICON》2022,14(6):2595-2608
Silicon - In the present study, multi-scale sized porous inorganic polymers were produced by alkaline activation of volcanic ash. Rice husk ash, an agricultural biomass, was used both in the... 相似文献
880.
Rougé Pierre Moukadem Ali Dieterlen Alain Boutet Antoine Frindel Carole 《Journal of Signal Processing Systems》2023,95(1):89-99
Journal of Signal Processing Systems - Thanks to the recent development of sensors and Internet of Things (IoT), it is now common to use mobile application to monitor health status. These... 相似文献