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磨齿切断长及比边缘负荷理论的理解及应用

中国造纸学报 2022年第S1期37卷 162-169页

作者：刘欢 ROUX jean-claude 董继先陕西科技大学机电工程学院陕西西安710021 格勒诺布尔-阿尔卑斯大学法国格勒诺布尔F-38000

直齿磨盘是广范应用的磨盘种类之一,而磨齿切断长是衡量直齿磨盘冲击强度的关键参数。本课题以等距直齿磨浆元件为研究对象,从磨齿当量总长度及动盘磨齿滑动总长度两个角度对磨齿切断长的物理意义进行阐述,并建立了配备直齿磨浆元件的... 详细信息

直齿磨盘是广范应用的磨盘种类之一,而磨齿切断长是衡量直齿磨盘冲击强度的关键参数。本课题以等距直齿磨浆元件为研究对象,从磨齿当量总长度及动盘磨齿滑动总长度两个角度对磨齿切断长的物理意义进行阐述,并建立了配备直齿磨浆元件的荷兰打浆机、盘磨机及锥形磨浆机的磨齿切断长的积分及离散计算式;并探讨了比边缘负荷(SEL)的应用,发现SEL可应用于具有相同角参数的等距直齿磨盘低浓磨浆过程的表征或特定直齿磨盘磨浆特性的研究,而难以对具有不同角参数、挡坝及齿高参数的等距直齿磨盘进行表征。

关键词：制浆造纸直齿磨盘磨齿切断长比边缘负荷

Bladder-colon chronic cross-sensitization involves neuro-glial pathways in male mice

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World Journal of Gastroenterology 2022年第48期28卷 6935-6949页

作者： Karim Atmani Fabien Wuestenberghs Maximilien Baron Illona Bouleté Charlène Guérin Wafa Bahlouli David Vaudry jean claude do Rego jean-Nicolas Cornu Anne-Marie Leroi Moïse Coëffier Mathieu Meleine Guillaume Gourcerol Nutrition Gut and Brain Unit(Inserm U1073)Institute for Research and Innovation in BiomedicineUniversitéde Rouen NormandieRouen 76000France Department of Gastroenterology and Hepatology UniversitéCatholique de LouvainCHU UCL NamurYvoir 5530Belgium Department of Physiology CHU RouenUniversitéde Rouen NormandieRouen 76031France Department of Urology CHU RouenUniversitéde Rouen NormandieRouen 76000France Inserm UMR 1245Team Epigenetics and Pathophysiology of Neurodevelopmental DisordersUniversitéde Rouen NormandieRouen 76000France Behavioural Analysis Platform(SCAC) HeRacLeS Inserm US51-CNRS UAR2026Institute for Research and Innovation in BiomedicineUniversitéde Rouen NormandieRouen 76000France Department of Nutrition CHU RouenUniversitéde Rouen NormandieRouen 76000France Inserm U1107 NeuroDolClermont Auvergne UniversityClermont-Ferrand 63000France

BACKGROUND Irritable bowel syndrome and bladder pain syndrome often overlap and are both characterized by visceral *** pelvic organs share common sensory pathways,it is likely that those syndromes involve a cross-sensitization of the bladder and the *** precise pathophysiology remains poorly *** To develop a model of chronic bladder-colon cross-sensitization and to investigate the mechanisms *** Chronic cross-organ visceral sensitization was obtained in C57BL/6 mice using ultrasound-guided intravesical injections of acetic acid under brief isoflurane *** sensitivity was assessed in conscious mice by measuring intracolonic pressure during isobaric colorectal ***,used as a marker of colorectal inflammation,was measured in the colon,and colorectal permeability was measured using chambers.c-Fos protein expression,used as a marker of neuronal activation,was assessed in the spinal cord(L6-S1 level)using *** fluorescent protein on the fractalkine receptor-positive mice were used to identify and count microglia cells in the L6-S1 dorsal horn of the spinal *** expression of NK1 receptors and MAPK-p38 were quantified in the spinal cord using western *** Visceral hypersensitivity to colorectal distension was observed after the intravesical injection of acetic acid vs saline(P<0.0001).This effect started 1 h post-injection and lasted up to 7 d *** increased permeability or inflammation was shown in the bladder or colon 7 d *** hypersensitivity was associated with the increased expression of c-Fos protein in the spinal cord(P<0.0001).In green fluorescent protein on the fractalkine receptor-positive mice,intravesical acetic acid injection resulted in an increased number of microglia cells in the L6-S1 dorsal horn of the spinal cord(P<0.0001).NK1 receptor and MAPK-p38 levels were increased in the spinal cord up to 7 d after

关键词： Cross-organ sensitization MAPK-p38 Microglia NK1 receptor Pain Visceral hypersensitivity

Fast Multi-Operator Image Resizing and Evaluation

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Journal of Computer Science & Technology 2012年第1期27卷 121-134页

作者：董未名鲍冠伯张晓鹏 jean-claude Paul Sino-French Laboratory for Computer Science Automation and Applied Mathematics/National Laboratory of Pattern RecognitionInstitute of AutomationChinese Academy of SciencesBeijing 100190China National Institute for Research in Computer Science and Control Domaine de Voluceau Rocquencourt Le Chesnay 78153France

Current multi-operator image resizing methods succeed in generating impressive results by using image similarity measure to guide the resizing process. An optimal operation path is found in the resizing space. However, their slow resizing speed caused by inefficient computation strategy of the bidirectional patch matching becomes a drawback in practical use. In this paper, we present a novel method to address this problem. By combining seam carving with scaling and cropping, our method can realize content-aware image resizing very fast. We define cost functions combing image energy and dominant color descriptor for all the operators to evaluate the damage to both local image content and global visual effect. Therefore our algorithm can automatically find an optimal sequence of operations to resize the image by using dynamic programming or greedy algorithm. We also extend our algorithm to indirect image resizing which can protect the aspect ratio of the dominant object in an image.

关键词： image resizing multi-operator operator cost indirect resizing

Population genetic structure of the biological control agent Macrolophus pygmaeus in Mediterranean agroecosystems

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Insect Science 2017年第5期24卷 859-876页

作者： jean-claude Streito Cecile Clouett Faten Hamdi Nathalie Gauthier IRD UMR (INRA/IRDICiradlMontpellier SupAgro) Centre de Biologie pour la Gestion des Populations INRA UMR (INRA/IRDI CiradlMontpellier SupAgro) Centre de Biologie pour la Gestion des Populations 755 avenue du Campus Agropolis CS 30016 34988Montferrier-sur-Lez France

Biological control of agricultural pests relies on knowledge of agroecosystem functionality, particularly when affected by the use of mass-produced biological agents. Incorporating pre- and/or post-release information such as genetic diversity and struc- ture on these agents using molecular-based approaches could advance our knowledge of how they perform in agroecosystems. We evaluated the population genetics of Macrolo- phus pygmaeus, the most widely used predatory mirid against many arthropod pests of greenhouse crops in the Mediterranean region, using the mitochondrial Cytb sequence and microsatellite data, and population genetics and phylogeny approaches. We investigated commercially mass-produced insects （i.e., commercial insects either mass-reared in the laboratory for many generations, or purchased by farmers and released in the greenhouses） and ＂wild＂ insects （i.e., that occur naturally outside or are collected in nature for release in the greenhouses）. The mirids were mainly collected in agroecosystems in which solana- ceous plants are grown in northern Spain, southern France and Greece. Both molecular markers and approaches distinguished 2 genetically differentiated populations. The less genetically diverse population, hereafter named the ＂commercial＂ strain included all indi- viduals from laboratory mass-rearings and most releases of commercially bred individuals. The most genetically diverse population mainly comprised individuals originating from noncultivated environments, or from releases of＂wild＂ individuals. Rare examples of hy- bridization between M. pygmaeus from the 2 populations were observed and asymmetric gene flow was revealed. These findings provide new insights into what happens to M. pyg- maeus released in the agroecosystems we studied, and show that it is possible to monitor some commercial strains.

关键词： biological control commercial vs. wild strains Macrolophus pygmaeus microsatellites mtCytb population genetics

Longitudinal trajectories of athlete burnout among young table tennis players: A 3-wave study

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Journal of Sport and Health Science 2020年第4期9卷 367-375页

作者： Guillaume Martinent Benoıt Louvet jean-claude Decret Laboratory of Vulnerabilities and Innovation in Sport Claude Bernard University Lyon 1Villeurbanne 69622France Center of Research of Transformations of Sports and Physical Activities(CETAPS) University of RouenMont-Saint-Aignan 76821France French Federation of Table Tennis Paris 75625France

Purpose:The purposes of this study were to examine the trajectories of athlete burnout across a 2-month period characterized by high physical,psychological,and social demands to explore(1)whether several subgroups of athletes representing distinct burnout trajectories emerged from the analyses and(2)whether athlete burnout symptoms(reduced accomplishment,sport devaluation,and exhaustion)developed in tandem or whether some burnout dimensions predicted downstream changes in other dimensions(causal ordering model).Methods:One hundred and fifty-nine table tennis players in intensive training centers completed a self-reported athlete burnout measure across 3 time points within a 2-month period characterized by high *** were analyzed through latent class growth ***:Results of latent class growth analysis showed 3 distinct trajectories for each athlete burnout dimension,indicating not only linear or quadratic change but also stability in longitudinal athlete burnout *** also suggested that the 3 dimensions of athlete burnout did not develop in ***,the likelihood of belonging to particular emerging trajectories of sport devaluation and physical/emotional exhaustion was significantly influenced by the athletes’perception of reduced accomplishment assessed at Time ***,reduced accomplishment predicted downstream changes in the 2 other athlete burnout ***:As a whole,these results highlighted that the multinomial heterogeneity in longitudinal athlete burnout symptoms needs to be accounted for in future research.

关键词： Athlete burnout Intensive training Latent class growth analyses Person-centered approach Table tennis Youth elite athletes

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磨齿切断长及比边缘负荷理论的理解及应用

磨齿切断长及比边缘负荷理论的理解及应用

Asymptotics for Helmholtz and Maxwell Solutions in 3-D OpenWaveguides

中国造纸学会第二十届学术年会

作者：刘欢 ROUX jean-claude 董继先

关键词：制浆造纸直齿磨盘磨齿切断长比边缘负荷

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Communications in Computational Physics 2012年第2期11卷 629-646页

作者： Carlos Jerez-Hanckes jean-claude Nedelec Seminar fur AngewandteMathematik ETH ZurichRamistrasse 1018092 ZurichSwitzerland Escuela de Ingenierıa Pontificia Universidad Catolica de ChileAv.Vicu˜naMackenna 4860SantiagoChile Centre de Mathematiques Appliquees Ecole Polytechnique91128 PalaiseauFrance

We extend classic Sommerfeld and Silver-Muller radiation conditions for bounded scatterers to acoustic and electromagnetic fields propagating over three isotropic homogeneous layers in three *** x=(x1,x2,x3)∈R^(3),with x_(3)denoting the direction orthogonal to the layers,standard conditions only hold for the outer layers in the region|x_(3)|>||x||^(γ),forγ∈(1/4,1/2)and x ***|x_(3)|<||x||^(γ)and inside the slab,asymptotic behavior depends on the presence of surface or guided modes given by the discrete spectrum of the associated operator.

关键词： Open waveguide radiation condition Helmholtz equation

Exceptional points and the ring laser gyroscope

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Photonics Research 2020年第3期8卷 252-256页

作者： LUKE HORSTMAN NING HSU JAMES HENDRIE DAVID SMITH jean-claude DIELS School of Optical Science and Engineering University of New MexicoAlbuquerqueNew Mexico 87106USA Center for High Technology Materials University of New MexicoAlbuquerqueNew Mexico 87106USA NASA Marshall Space Flight Center Space Systems DepartmentHuntsvilleAlabama 35812USA Department of Physics and Astronomy University of New MexicoAlbuquerqueNew Mexico 87131USA

An equivalence is made between the exceptional points proposed by the field of non-Hermitian quantum mechanics and the dead band observed in laser *** sensitivity enhancement near this exceptional point is plagued by increased uncertainty due to broadening of the beat-note ***,near the dead band the gyroscope response is caused by Rabi intensity oscillations and not solely by a phase ***,a distinction is made between conservative and non-conservative coupling.

关键词： laser exceptional conservative

A NEW EXPLICIT SIMULATION FOR MOULD FILLING WITH HIGH VISCOUS FEEDSTOCK

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Acta Mechanica Solida Sinica 2004年第4期17卷 347-352页

作者： Cheng Zhiqiang Barriere Thierry Liu Baosheng Gelin jean claude Department of Applied Mechanics Southwest Jiaotong UniversityChengdu 610031China LMARC University of Franche-Comte and CNRS24 Chemin de l’′epitapheBesancon 25000France

In the simulation of the metal injection moulding (MIM), the behaviours of feedstock are much di?erent from which of the polymer injection. It is a mixture of the metallic powder in high concentration and some plastic binder. The advance in simulation of the mould ?lling with such high viscous feedstock is featured by the development of a fully explicit vectorial algorithm. On the basis of previous explicit software realized by the authors, the new algorithm avoids the global solution for pressure ?elds and the use of MINI elements to improve its e?ciency. Except for the operations at element level, neither global solution nor the construction of global matrix is required in simulation. A special strategy is used to regulate the incompressibility condition in ?lled domain at each time step. In case of the MIM problems, this method provides a fast way to simulate the ?lling processes. The computational cost is about linearly proportional to the degree of freedom number. Moreover, this vectorial algorithm can be easily parallelized for high performance computation with multi-clusters. The comparison of numerical results with previous simulations on 3D cases proves the validity and e?ciency of new algorithm.

关键词： mould filling high viscosity explicit simulation vectorial algorithm