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Artykuły w czasopismach na temat "Coupe – Effets de la température"
BANZET, S., N. KOULMANN i L. BOURDON. "Activité physique et hyperthermie". Médecine et Armées Vol. 40 No. 3, Volume 40, Numéro 3 (1.06.2012): 207–16. http://dx.doi.org/10.17184/eac.6608.
Pełny tekst źródłaJalal, W., B. Pinel-Alloul i G. Méthot. "Suivi à moyen terme des impacts écologiques des feux et des coupes forestières sur la communauté zooplanctonique des lacs de l'écozone boréale". Revue des sciences de l'eau 18 (12.04.2005): 221–48. http://dx.doi.org/10.7202/705585ar.
Pełny tekst źródłaYAHA, Edith Oré, Atchamou Bola MALOMON, Fanakpon Joseph DJEVI i Ibouraïma YABI. "Perceptions Et Adaptation Des Femmes Agricultrices Aux Risques Climatiques Dans La Commune De Ouèssè". International Journal of Progressive Sciences and Technologies 25, nr 1 (2.03.2021): 415. http://dx.doi.org/10.52155/ijpsat.v25.1.2814.
Pełny tekst źródłaCOLLIN, A., L. BEDRANI, T. LOYAU, S. MIGNON-GRASTEAU, S. METAYER-COUSTARD, C. PRAUD, V. DE BASILIO i in. "L’acclimatation embryonnaire : une technique innovante pour limiter les mortalités liées au stress thermique chez le poulet". INRAE Productions Animales 24, nr 2 (7.04.2011): 191–98. http://dx.doi.org/10.20870/productions-animales.2011.24.2.3253.
Pełny tekst źródłaDELAGARDE, R., i L. A. PÉREZ-PRIETO. "Effets de la biomasse et de la quantité d’herbe offerte sur l’ingestion, les performances laitières et le comportement alimentaire des vaches laitières conduites en pâturage tournant : étude par métaanalyse". INRA Productions Animales 29, nr 2 (9.07.2019): 87–102. http://dx.doi.org/10.20870/productions-animales.2016.29.1.2519.
Pełny tekst źródłaDelaite, R., i J. P. Valentin. "Compensation des effets mécaniques dans un cristal de coupe SC". Revue de Physique Appliquée 22, nr 2 (1987): 119–23. http://dx.doi.org/10.1051/rphysap:01987002202011900.
Pełny tekst źródłaViatte, T., S. Bolognini, T. Cutard, G. Feusier i W. Benoit. "Comportement mécanique à haute température du métal dur et de différents cermets de coupe". Matériaux & Techniques 85, nr 9-10 (1997): 13–20. http://dx.doi.org/10.1051/mattech/199785090013.
Pełny tekst źródłaGoldspiegel, Fabien, Philippe Michel, Jean-Baptiste Blumenfeld, Jean-Baptiste Oszenda i Katia Mocellin. "Influence des effets dynamiques et thermiques sur l’assemblage par clouage". Matériaux & Techniques 106, nr 3 (2018): 305. http://dx.doi.org/10.1051/mattech/2018049.
Pełny tekst źródłaEl Bitar, N., i D. Le Bars. "Douleur et thermorégulation Les effets ambivalents de la morphine". Douleur et Analgésie 31, nr 1 (marzec 2018): 35–61. http://dx.doi.org/10.3166/dea-2018-0002.
Pełny tekst źródłaLebreuilly, Romain, Nicolas Rigaux i Martine Batt. "Quelles perceptions sociales de la forêt ? Aperçu des différentes approches à partir de l’analyse de la littérature". Revue forestière française 72, nr 3 (30.06.2020): 225–31. http://dx.doi.org/10.20870/revforfr.2020.5321.
Pełny tekst źródłaRozprawy doktorskie na temat "Coupe – Effets de la température"
Kagnaya, Tchadja. "Contribution à l’identification des mécanismes d’usure en usinage d’un WC-6%Co par une approche tribologique et thermique". Paris, ENMP, 2009. http://pastel.archives-ouvertes.fr/pastel-00005750.
Pełny tekst źródłaThe aim of this work is to study wear mechanisms of WC-6%Co cutting-tools in machining by turning. Damage modes are controlled by complex damage mechanisms. They combine abrasion, adhesion and diffusion. Furthermore, they are highly dependant of the temperature levels at tool/material interfaces. In the present study two mains approaches are considered: on the one hand machining by turning and on the other hand tribological tests. In both cases temperature measurements and temperature modelling have been performed. Complementary results have been obtained, resulting in a better understanding of wear behaviour between WC-6%Co and a C45 steel grade. Mains wear mechanisms were identified. They deal with: - large modifications of the WC-6%Co microstructure due to critical mechanical loadings and to high temperature levels (up to 1200°C), - mobility of WC grains due to the viscoplastic behaviour of the cobalt based binder phase at high temperature. Such a mobility leads to intergranular microcracking phenomena and to WC fragmentation and debonding mechanisms, - intragranular microcracking and strain phenomena, that can lead to WC grain fragmentation, due to stress concentrations, - abrasion due to extracted WC fragments and to hard particules extracted from the C45 steel too, - adhesion, particularly at the end of the contact area between tool and chip
Motta, Mariane Prado. "Contribution à l’étude de systèmes de surveillance de l'usinage basés sur des méthodes d‘apprentissage machine et des mesures de vibrations, efforts et température de coupe". Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0296.
Pełny tekst źródłaMachining is an economically important manufacturing process that relies on the use of a sharpened cutting tool to mechanically cut and remove material from a part to achieve a desired geometry. Given the ever-increasing demands for quality, product variability and cost reduction, tool condition and workpiece quality monitoring systems based on artificial intelligence (AI) techniques are a potential solution are a potential solution for a more reliable and economical manufacturing processes. Recent developments in the field of AI, have shown great potential to transform the manufacturing domain with advanced tools dedicated to data analysis and modeling. In particular, supervised machine learning (ML) algorithms are a powerful tool for modeling complex relationships between input and output variables based on a dataset containing examples, i.e., input-output pairs. Nevertheless, one of the main drawbacks of these modeling techniques is that a large amount of data, usually obtained through experiments (often long and expensive to perform), is required to train accurate and reliable models. This fact limits the applicability of these types of models in an industrial context. Considering this context, this study aims to contribute to the identification of methodologies for the development of ML models dedicated to machining monitoring within industrial conditions, in which time and resources for the realization of experiments are often limited. For this purpose, it is considered in this study that, although experiments can be onerous, in the industry it is common that, before starting large scale machining productions with a new tool or material, setup experiments are performed to determine the most appropriate cutting parameters to perform that production. Given this need (or recommendation), it will be investigated in this thesis, the predictive performances that can be achieved if data, obtained from these tuning experiments, are used to generate predictive models for machining monitoring. More precisely, setting experiments from the standardized methodology Couple Tool-Material protocol (NF E 66-520) are considered. In an effort to obtain good predictive performance with a limited amount of experimental data, sensors for measuring cutting forces, temperature and vibrations are chosen as instrumentation for the monitoring system to be developed, given its close relationship with the kinematics of the machining process. In this matter, special attention is given to the feature engineering step. That is, the process of transforming the available raw data, for example, the signals recorded by the sensors, into features, i.e., information, that more accurately represent the problem underlying the predictive model. Finally, since in the industry the changes in cutting tool reference can occur quite often, it will also be investigated whether the models developed for a given target tool can be applied to other slightly different tools (variations on nose radius, substrate and coating) and whether, for the training of ML models, the use of larger databases, but containing observations related not only to the target tool but also to other tools slightly different from it, will be more advantageous, compared to the use of a smaller database specific to the target tool
Ramirez, Christophe. "Critères d’optimisation des alliages de TITane pouraméliorer leur USinabilité". Thesis, Paris, ENSAM, 2017. http://www.theses.fr/2017ENAM0006/document.
Pełny tekst źródłaThe massive introduction of titanium alloys onto the aeronautical structures parts has raised new problems in the machining process. Because of their low thermal properties (refractory materials), they are considered as difficult to cut material. The industrial aim is therefore to improve the productivity of the titanium alloy’s machining and to reduce their costs. Some research on Ti6Al4V α + β, Ti54M and β-treated Ti6Al4V cutting was carried out to point out machinability’s differences between these three materials. This work highlights a strong influence of the orthotropic behavior and the heterogeneity of the lamellar microstructure as well as the grain size of the β-treated Ti6Al4V on cutting. The study on the tool wear diffusion shows that the main diffusion element is titanium and therefore no difference is observed between those three materials. To check that diffusion is the main wear mode, instrumented drilling tests with a wireless temperature measurement device were performed. Temperatures behind the cutting edge reach temperatures above 500 °C for low cutting speeds. At this temperature the phenomenon of diffusion is thermally activated. Finally, in order to have an understanding of the machinability consistencies, a research on the materials’ behavior (Johnson-Cook) and the implementation of a numerical simulation were realized. The simulations carried out, using the previously identified behavior’s laws, model precisely the machining of the Ti6Al4V α+β and Ti54M. The heterogeneity of the β-treated Ti6Al4V does not allow a good modeling of the chip formation. Polycrystalline modeling would be more appropriate
Poser, Christophe. "Influence de la température sur la phénologie de la canne à sucre : conséquences sur la phase d'implantation de la culture dans les Hauts de La Réunion". Thesis, La Réunion, 2013. http://www.theses.fr/2013LARE0030/document.
Pełny tekst źródłaThis thesis is centered on the effects of temperature on sugarcane development and its potential for geographical expansion under low temperatures in high-altitude tropical conditions. In the highlands of Reunion Island (les Hauts), the duration of the germination, in planting years, affects the date and the level of the first harvest, as well as the sugarcane yield in the following ratoon crop cycle. Trials took place in climate chambers, greenhouses and fields at different temperatures and altitudes. A preliminary study validates the conditions governing the experimentation: bud bursts can be studied through single, healthy, single bud cuttings that are taken from the middle section of the mature stem. Temperature considerably influences the primary tiller germination and emergence stages. The thermal model that was developed satisfactorily predicts bursting at a constant temperature and allows for the quantification of observed varietal differences. Field trials reveal a disparity in the production and growth dynamics of leaves and stems according to locations and varieties. Temperature influences this differentiation. Among the indicators that were elaborated, the duration for the seedling of half the population, when applied to a climatic database, allows one to define geographical zones and time periods conducive to the introduction of sugarcane according to its variety. The methods presented herein can be used in varietal selection for all zones where cold temperature limits the spread of crops. Results could be used for the development of new cultural practices or for further studies in geo-referenced agronomic zoning
Guillot, Émilien. "Étude expérimentale des transferts de chaleur à une interface pièce-outil de coupe". Nantes, 2009. http://www.theses.fr/2009NANT2005.
Pełny tekst źródłaThe study relates to the characterization of the interface of contact sliding piece-tool under great deformations representative of the secondary shear zone of a HSM process. The literature shows that the authors consider a perfect thermal contact condition and suppose that the heat flux generated by friction is divided in the ratio of the thermal effusivities of materials in contact. However the distribution of the strain at this interface is huge and the thermal contact must become poor before the release of the chip. The goal of the thesis is to propose an experimental methodology (founded to the measure of the temperature field by thermocouples and its analysis by inverse technique) in order to determine the contact parameters describing a sliding contact seat of a heat dissipation : α , Rtc et φg The measurement principle presents an original approach which treats in a sequential way and by subdomain the zones on both sides of the interface. The thermal conditions which prevail on the contact surfaces are estimated singly. Then, generated heat flux (φg ) and in a simultaneous way α and Rtc et φg are estimated. We have studied the instrumentation by thermocouples in order to control the compromise sensitivity/precision and to well understand the intrusive character of thermocouples set up. Experiments were carried out on friction device that reproduces the mechanics and thermals contact conditions of a HSM process at the tip tool. The experimental plan allows to study the influence the sliding speed and the nature of the tribological couple on the thermal parameters of contact
Voyen, Serge. "Contribution à une modélisation de la répartition des températures dans un matériau fritté : Application à l'étude des outils de coupe". ENSMP, 2000. http://www.theses.fr/2000ENMP1033.
Pełny tekst źródłaKataya, Zeinab. "Effets de température sur les nanoparticules de CoAg : structure et effets de ségrégation". Phd thesis, Université d'Orléans, 2013. http://tel.archives-ouvertes.fr/tel-01004367.
Pełny tekst źródłaLlavé, Campos Angela Magali. "Effets de l'angle d'attaque, de l'orientation de coupe et de la profondeur de coupe sur les efforts de coupe et la qualité de surface du bois d'épinette noire". Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/28575/28575.pdf.
Pełny tekst źródłaMerzouki, Abderrahmane. "Les effets d'une coupe à blanc sur l'activité biologique d'un sol fersiallitique méditerranéen". Montpellier 2, 1986. http://www.theses.fr/1986MON20145.
Pełny tekst źródłaMerzouki, Abderrahmane. "Les Effets d'une coupe à blanc sur l'activité biologique d'un sol fersiallitique méditerranéen". Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb375996090.
Pełny tekst źródłaKsiążki na temat "Coupe – Effets de la température"
Temperature and toxicology: An integrative, comparative, and environmental approach. Boca Raton, FL: Taylor & Francis, 2005.
Znajdź pełny tekst źródłaPotvin, François. Abondance des colonies de castor avant et après coupe à blanc de type CPR en Abitibi-Témiscamingue. Québec: Ministère de l'environnement et de la faune, Direction de la faune et des habitats, 1997.
Znajdź pełny tekst źródłaMathieu, Côté, Société de la faune et des parcs du Québec. Direction de la recherche sur la faune., Québec (Province). Direction de l'environnement forestier. i Université du Québec à Rimouski., red. Utilisation de différents types de forêt résiduelle après coupe en forêt boréale par trois espèces de sciuridés. Rimouski: Université du Québec à Rimouski, 2001.
Znajdź pełny tekst źródłaBureau de la sécurité des transports du Canada. CN Amérique du Nord train parti à la dérive point milliaire 175, subdivision Grande Cache Latornell (Alberta) 18 janvier 1994. Hull, Qué: Bureau de la sécurité des transports du Canada, 1995.
Znajdź pełny tekst źródłaauthor, Holah J. T., red. The effect of wiping and spray wash temperature on bacterial retention of abraded domestic sink surface. Toronto, Ont: Nickel Development Institute, 1993.
Znajdź pełny tekst źródła1956-, Darveau Marcel, Université Laval. Département des sciences du bois et de la forêt., Université Laval. Centre de recherche en biologie forestière. i Québec (Province). Direction de l'environnement forestier., red. Utilisation par les oiseaux de paysages forestiers résultant de différents scénarios de récolte ligneuse dans la pessière noire: Rapport synthèse, 1997-1999. Sainte-Foy: Université Laval, Centre de recherche en biologie forestière, 2001.
Znajdź pełny tekst źródłaMarianne, Cusson, Société de la faune et des parcs du Québec. Direction de la recherche sur la faune., Québec (Province). Direction de l'environnement forestier. i Université du Québec à Rimouski., red. Utilisation à court terme de trois types de forêt résiduelle par le lièvre d'Amérique (Lepus americanus) en forêt boréale. Rimouski: Université du Québec à Rimouski, 2001.
Znajdź pełny tekst źródłaInternational, ASM, red. Relational analysis: Guidelines for estimating the high- and low-temperature properties of metals. Materials Park, Ohio: ASM International, 2011.
Znajdź pełny tekst źródłaYutaka, Tochihara, Ohnaka Tadakatsu i International Conference on Environmental Ergonomics (10th : 2002 : Fukuoka, Japan), red. Environmental ergonomics: The ergonomics of human comfort, health, and performance in the thermal environment. Amsterdam: San Diego, CA, 2005.
Znajdź pełny tekst źródłaS, Purohit S., red. Hormonal regulation of plant growth and development. Dordrecht: M. Nijhoff/W. Junk, 1985.
Znajdź pełny tekst źródłaCzęści książek na temat "Coupe – Effets de la température"
"13 Effets de température". W Exercices de neutronique, 59–62. EDP Sciences, 2004. http://dx.doi.org/10.1051/978-2-7598-0161-9.c016.
Pełny tekst źródła"13 Effets de température". W Exercices de neutronique, 216–20. EDP Sciences, 2004. http://dx.doi.org/10.1051/978-2-7598-0161-9.c049.
Pełny tekst źródła"Chapitre 7. Effets neutroniques liés à la température". W Histoire et techniques des réacteurs nucléaires et de leurs combustibles, 237–50. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-2032-0-011.
Pełny tekst źródła"Chapitre 7. Effets neutroniques liés à la température". W Histoire et techniques des réacteurs nucléaires et de leurs combustibles, 237–50. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-2032-0.c011.
Pełny tekst źródłaGAO, Kunshan, Wenyan ZHAO i John BEARDALL. "Réponses futures des producteurs primaires marins aux changements environnementaux". W Planète bleue, photosynthèse rouge et verte, 277–308. ISTE Group, 2023. http://dx.doi.org/10.51926/iste.9082.ch9.
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