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Articoli di riviste sul tema "Systematic Paris-Region"
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Papachristou, M., P. Ungemach e M. Fytikas. "Geothermal resource management - a reservoir simulation approach - the Paris Basin case". Bulletin of the Geological Society of Greece 47, n. 4 (21 dicembre 2016): 1939. http://dx.doi.org/10.12681/bgsg.10996.
Testo completoAbstract (sommario):
Numerical modeling has become an indispensable part of geothermal resource management, especially when long-term production is involved, offering the ability to forecast the reservoir behavior under various exploitation scenarios. This paper illustrates the simulation results of the “Dogger” reservoir in Val de Marne region (south of Paris), where 16 doublets (production-injection wells) are still in operation today. The “Dogger” low enthalpy geothermal reservoir in Paris Basin is being under intensive and systematic exploitation since the early 1980’s. Almost 40 years after the initiation of the heat mining project, the longevity of the reservoir and applications have become critical issues for achieving the exploitation system’s sustainability. The simulation covers a period of 52 years (1984-2035), attempting to recreate the exploitation history and to provide an early estimation of the time-space variation of pressure and temperature inside the reservoir under future production/injection schemes and schedules. For the majority of the wells, the calculated production temperatures match quite well the field data up to the year 2011. The prediction models indicate that certain modifications in the development scheme could result in the stabilization of the fluids temperature, or at least in slower depletion rates.
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Petetin, H., M. Beekmann, A. Colomb, H. A. C. Denier van der Gon, J. C. Dupont, C. Honoré, V. Michoud et al. "Evaluating BC and NO<sub>x</sub> emission inventories for the Paris region from MEGAPOLI aircraft measurements". Atmospheric Chemistry and Physics Discussions 14, n. 21 (24 novembre 2014): 29237–304. http://dx.doi.org/10.5194/acpd-14-29237-2014.
Testo completoAbstract (sommario):
Abstract. High uncertainties affect black carbon (BC) emissions and, despite its important impact on air pollution and climate, very few BC emissions evaluations are found in the literature. This paper presents a novel approach, based on airborne measurements across the Paris plume, developed in order to evaluate BC and NOx emissions at the scale of a whole agglomeration. The methodology consists in integrating, for each transect, across the plume observed and simulated concentrations above background. This allows minimizing several error sources in the model (e.g. representativeness, chemistry, plume lateral dispersion). The procedure is applied with the CHIMERE chemistry-transport model to three inventories – the EMEP inventory, and the so-called TNO and TNO-MP inventories – over the month of July 2009. Various systematic uncertainty sources both in the model (e.g. boundary layer height, vertical mixing, deposition) and in observations (e.g. BC nature) are discussed and quantified, notably though sensitivity tests. A statistically significant (but moderate) overestimation is obtained on the TNO BC emissions and on EMEP and TNO-MP NOx emissions, as well as on the BC/NOx emission ratio in TNO-MP. The benefit of the airborne approach is discussed through a comparison with the BC/NOx ratio at a ground site in Paris, which additionally suggests potential error compensations in the BC emissions spatial distribution over the agglomeration.
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Petetin, H., M. Beekmann, A. Colomb, H. A. C. Denier van der Gon, J. C. Dupont, C. Honoré, V. Michoud et al. "Evaluating BC and NO<sub><i>x</i></sub> emission inventories for the Paris region from MEGAPOLI aircraft measurements". Atmospheric Chemistry and Physics 15, n. 17 (1 settembre 2015): 9799–818. http://dx.doi.org/10.5194/acp-15-9799-2015.
Testo completoAbstract (sommario):
Abstract. High uncertainties affect black carbon (BC) emissions, and, despite its important impact on air pollution and climate, very few BC emissions evaluations are found in the literature. This paper presents a novel approach, based on airborne measurements across the Paris, France, plume, developed in order to evaluate BC and NOx emissions at the scale of a whole agglomeration. The methodology consists in integrating, for each transect, across the plume observed and simulated concentrations above background. This allows for several error sources (e.g., representativeness, chemistry, plume lateral dispersion) to be minimized in the model used. The procedure is applied with the CHIMERE chemistry-transport model to three inventories – the EMEP inventory and the so-called TNO and TNO-MP inventories – over the month of July 2009. Various systematic uncertainty sources both in the model (e.g., boundary layer height, vertical mixing, deposition) and in observations (e.g., BC nature) are discussed and quantified, notably through sensitivity tests. Large uncertainty values are determined in our results, which limits the usefulness of the method to rather strongly erroneous emission inventories. A statistically significant (but moderate) overestimation is obtained for the TNO BC emissions and the EMEP and TNO-MP NOx emissions, as well as for the BC / NOx emission ratio in TNO-MP. The benefit of the airborne approach is discussed through a comparison with the BC / NOx ratio at a ground site in Paris, which additionally suggests a spatially heterogeneous error in BC emissions over the agglomeration.
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Fiehn, Alina, Julian Kostinek, Maximilian Eckl, Theresa Klausner, Michał Gałkowski, Jinxuan Chen, Christoph Gerbig et al. "Estimating CH<sub>4</sub>, CO<sub>2</sub> and CO emissions from coal mining and industrial activities in the Upper Silesian Coal Basin using an aircraft-based mass balance approach". Atmospheric Chemistry and Physics 20, n. 21 (3 novembre 2020): 12675–95. http://dx.doi.org/10.5194/acp-20-12675-2020.
Testo completoAbstract (sommario):
Abstract. A severe reduction of greenhouse gas emissions is necessary to reach the objectives of the Paris Agreement. The implementation and continuous evaluation of mitigation measures requires regular independent information on emissions of the two main anthropogenic greenhouse gases, carbon dioxide (CO2) and methane (CH4). Our aim is to employ an observation-based method to determine regional-scale greenhouse gas emission estimates with high accuracy. We use aircraft- and ground-based in situ observations of CH4, CO2, carbon monoxide (CO), and wind speed from two research flights over the Upper Silesian Coal Basin (USCB), Poland, in summer 2018. The flights were performed as a part of the Carbon Dioxide and Methane (CoMet) mission above this European CH4 emission hot-spot region. A kriging algorithm interpolates the observed concentrations between the downwind transects of the trace gas plume, and then the mass flux through this plane is calculated. Finally, statistic and systematic uncertainties are calculated from measurement uncertainties and through several sensitivity tests, respectively. For the two selected flights, the in-situ-derived annual CH4 emission estimates are 13.8±4.3 and 15.1±4.0 kg s−1, which are well within the range of emission inventories. The regional emission estimates of CO2, which were determined to be 1.21±0.75 and 1.12±0.38 t s−1, are in the lower range of emission inventories. CO mass balance emissions of 10.1±3.6 and 10.7±4.4 kg s−1 for the USCB are slightly higher than the emission inventory values. The CH4 emission estimate has a relative error of 26 %–31 %, the CO2 estimate of 37 %–62 %, and the CO estimate of 36 %–41 %. These errors mainly result from the uncertainty of atmospheric background mole fractions and the changing planetary boundary layer height during the morning flight. In the case of CO2, biospheric fluxes also add to the uncertainty and hamper the assessment of emission inventories. These emission estimates characterize the USCB and help to verify emission inventories and develop climate mitigation strategies.
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KIDYOO, MANIT. "Hoya phuwuaensis (Apocynaceae: Asclepiadoideae), a new species from Northeastern Thailand". Phytotaxa 282, n. 3 (28 ottobre 2016): 218. http://dx.doi.org/10.11646/phytotaxa.282.3.5.
Testo completoAbstract (sommario):
The new species, Hoya phuwuaensis is described and illustrated. It was discovered in Phu Wua Wildlife Sanctuary, Bueng Kan Province, northeastern Thailand. Hoya phuwuaensis is similar to the widespread and common species H. caudata. Both species have prominent mottling of silver spots on the adaxial leaf surface and positively geotropic inflorescences with slender peduncles. However, the new species can be distinguished from H. caudata by its elliptic leaf with cuneate base, obovate-oblong corona lobe and triangular anther appendages.Brown, R. (1810) Prodromus Florae Novae Hollandiae et Insulae Van-Diemen, etc. Leornard Schrag, Nuremberg.Decaisne, J. (1844) Asclepiadaceae. In: Candolle, A.P. de (Ed.) Prodromus Systematis Naturalis Regni Vegetabilis 8. Fortin, Masson & Sociorum, Paris, pp. 490–665.Hooker, J.D. (1883) The Flora of British India 4. Reeve & Co., London, 780 pp.Kerr, A.F.G. (1940) Hoya flagellata Kerr. Hooker’s Icones Plantarum 35: t. 3407.IUCN Standards and Petitions Subcommittee (2016) Guidelines for using the IUCN Red List categories and criteria. Version 12. Prepared by the Standards and Petitions Subcommittee. Available from: http://www.iucnredlist.org/documents/RedListGuidelines.pdf (accessed 13 September 2016)Kerr, A.F.G. (1951) Hoya R.Br. In: Pendleton, R.L. (Ed.) Florae Siamensis Enumeratio 3 (1). Siam Society, Bangkok, pp. 35–42. Kidyoo, M. (2013) Hoya soidaoensis kidyoo, a new species of Hoya (Asclepiadaceae) from Eastern Thailand. Phytotaxa 105 (2): 45–50. http://dx.doi.org/10.11646/phytotaxa.105.2.3Kidyoo, M. (2015) Hoya rostellata (Apocynaceae: Asclepiadoideae), a new species from Thailand. Taiwania 60 (1): 39–42.Li, P.T, Gilbert, M.G. & Stevens, W.D. (1995) Asclepiadaceae. In: Wu, Z.Y. & Raven, P.H. (Eds.) Flora of China. 16. Science Press, Beijing & Missouri Botanical Garden, St. Louis, pp.189–270.Ridley, H.N. (1923) Hoya Br. In: Ridley, H.N. (Ed.) The Flora of the Malay Peninsula 2. Reeve & Co., London, pp. 393–402.Rintz, R.E. (1978) The Peninsular Malaysian species of Hoya (Asclepiadaceae). Malaysian Nature Journal 30: 467–522.Rodda, M. & Simonsson Juhonewe, N. (2011) Hoya mappigera (Apocynaceae, Asclepiadoideae), a new campanulate flowered species from Peninsular Malaysia and southern Thailand. Feddes Repertorium 122: 1–7. http://dx.doi.org/10.1002/fedr.201100019Rodda, M. & Ang, W.F. (2012) Hoya caudata Hook.f. (Apocynaceae), A new record for Singapore, and keys to the Hoya species of Singapore. Nature in Singapore 5: 123–128.Schlechter R. (1916) Neue Asclepiadaceen von Sumatra und Celebes. Beihefte zum Botanischen Centralblatt 34: 1–18.Thaithong, O. (1995) The genus Hoya in Thailand. In: Kiew, R. (Ed.) The Taxonomy and Phytochemistry of the Asclepiadaceae in Tropical Asia. University Pertanian, Malaysia, pp. 83–94.Wanntorp, L., Kocyan, A., van Donkelaar, R. & Renner, S.S. (2006) Towards a monophyletic Hoya (Marsdenieae, Apocynaceae): Inferences from the chloroplast trnL region and the rbcL-atpB spacer. Systematic Botany 31: 586–596. http://dx.doi.org/10.1600/036364406778388593
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Klazenga, Niels. "A revision of the Australasian species of Dicranoloma (Bryophyta, Dicranaceae)". Australian Systematic Botany 16, n. 4 (2003): 427. http://dx.doi.org/10.1071/sb02032.
Testo completoAbstract (sommario):
A revision of the Australasian (Australian and New Zealand) species of Dicranoloma (Renauld) Renauld is presented. Fifteen species are accepted: Dicranoloma austroscoparium (Müll.Hal. ex Broth.) Watts & Whitel., D. billarderi (Brid. ex anon.) Paris, D. braunii (Müll.Hal. ex Bosch & Sande Lac.) Paris, D. daymannianum E.B. Bartram, D. diaphanoneuron (Hampe & Müll.Hal.) Paris, D. dicarpum (Nees) Paris, D. eucamptodontoides (Broth. & Geh.) Paris, D. fasciatum (Hedw.) Paris, D. leichhardtii (Hampe) Watts & Whitel., D. menziesii (Taylor) Renauld, D. obesifolium (R.Br.bis) Broth., D. platycaulon Dixon, D. plurisetum Dixon, D. robustum (Hook.f. & Wilson) Paris and D. trichopodum (Mitt.) Broth. Fifteen new synonymies were made. New lectotypifications have been made where necessary. Thirteen species occur in Australia and 10 in New Zealand. D. austroscoparium, D.�diaphanoneuron and D. leichhardtii are endemic to Australia, while D. plurisetum and D. obesifolium are endemic to New Zealand. Moreover, D. platycaulon, D. fasciatum and D. trichopodum are endemic to the region. D. daymannianum and D. fasciatum are newly reported from Australia. All recognised species are described and illustrated and distribution maps and a key to the species have been provided.
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Helleu, Quentin, Cécile Courret, David Ogereau, Katie L. Burnham, Nicole Chaminade, Mohamed Chakir, Sylvie Aulard e Catherine Montchamp-Moreau. "Sex-Ratio Meiotic Drive Shapes the Evolution of the Y Chromosome in Drosophila simulans". Molecular Biology and Evolution 36, n. 12 (10 luglio 2019): 2668–81. http://dx.doi.org/10.1093/molbev/msz160.
Testo completoAbstract (sommario):
AbstractThe recent emergence and spread of X-linked segregation distorters—called “Paris” system—in the worldwide species Drosophila simulans has elicited the selection of drive-resistant Y chromosomes. Here, we investigate the evolutionary history of 386 Y chromosomes originating from 29 population samples collected over a period of 20 years, showing a wide continuum of phenotypes when tested against the Paris distorters, from high sensitivity to complete resistance (males sire ∼95% to ∼40% female progeny). Analyzing around 13 kb of Y-linked gene sequences in a representative subset of nine Y chromosomes, we identified only three polymorphic sites resulting in three haplotypes. Remarkably, one of the haplotypes is associated with resistance. This haplotype is fixed in all samples from Sub-Saharan Africa, the region of origin of the drivers. Exceptionally, with the spread of the drivers in Egypt and Morocco, we were able to record the replacement of the sensitive lineage by the resistant haplotype in real time, within only a few years. In addition, we performed in situ hybridization, using satellite DNA probes, on a subset of 21 Y chromosomes from six locations. In contrast to the low molecular polymorphism, this revealed extensive structural variation suggestive of rapid evolution, either neutral or adaptive. Moreover, our results show that intragenomic conflicts can drive astonishingly rapid replacement of Y chromosomes and suggest that the emergence of Paris segregation distorters in East Africa occurred less than half a century ago.
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Chaumard, Noël, Céline Defouilloy, Andreas T. Hertwig e Noriko T. Kita. "Oxygen isotope systematics of chondrules in the Paris CM2 chondrite: Indication for a single large formation region across snow line". Geochimica et Cosmochimica Acta 299 (aprile 2021): 199–218. http://dx.doi.org/10.1016/j.gca.2021.02.012.
Testo completo
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Rankovic, Aleksandar, Benoît Geslin, Adrien Perrard, Anne Barbillon, Véronique Vaury, Luc Abbadie e Isabelle Dajoz. "Urbanization effects on wild bee carbon and nitrogen stable isotope ratios in the Paris region". Acta Oecologica 105 (maggio 2020): 103545. http://dx.doi.org/10.1016/j.actao.2020.103545.
Testo completo
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HASSEMER, GUSTAVO, JOÃO PAULO RAMOS FERREIRA, LUÍS ADRIANO FUNEZ e LIDYANNE YURIKO SALEME AONA. "Identity and typification of Commelina vilavelhensis (Commelinaceae), and typification of C. robusta and C. scabrata". Phytotaxa 260, n. 2 (11 maggio 2016): 144. http://dx.doi.org/10.11646/phytotaxa.260.2.4.
Testo completoAbstract (sommario):
With this contribution we designate a lectotype for the name Commelina vilavelhensis, and present evidence for the synonymisation of this name under C. obliqua. We also designate here lectotypes for the names C. robusta and C. scabrata, other synonyms of C. obliqua, and discuss the taxonomic and nomenclatural situation of the name Heterocarpus obliquus. Furthermore, we present evidence that the lectotype of C. obliqua originated from plants cultivated in Paris, France and not in Uppsala, Sweden as currently accepted. We also provide here the first identification key to the eight species of Commelina that occur in the South region of Brazil.
Tesi sul tema "Systematic Paris-Region"
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Rochefeuille, Yohann. "Pôles de compétitivité, transferts de connaissances et dynamiques territoriales : une analyse du pôle Systematic Paris-Région". Thesis, Sorbonne Paris Cité, 2017. http://www.theses.fr/2017USPCA052/document.
Testo completoAbstract (sommario):
Les pôles de compétitivité, labellisés en 2005 par le gouvernement français, ont pour vocation de soutenirdes projets collaboratifs de Recherche et Développement (R&D). Ils ont pour originalité de conduire demultiples organisations (entreprises, universités, laboratoires de recherche, etc.) proches géographiquementà coopérer afin de faire émerger des innovations. La proximité géographique est-elle pour autant unecondition nécessaire à la bonne coordination des activités d'innovation dans les pôles de compétitivité ?Cette thèse se propose d'approfondir la compréhension des dynamiques collaboratives dans les projets deR&D, en particulier en plaçant la focale sur les formes non-spatiales des proximités (institutionnelle,organisationnelle, cognitive et sociale). Notre terrain d'enquête est le pôle de compétitivité Systematic Paris-Région sur la période 2005-2015. Nous proposons d'analyser les dynamiques territoriales du pôle, à partirde l'étude de l'évolution spatiale des coopérations, ainsi que de l'évolution du positionnement desorganisations dans les réseaux collaboratifs de R&D. Ces études représentent la construction et l'analyse deplus de quatre millions de données. Elles mobilisent les concepts et méthodes de la théorie des réseaux,ainsi que de l'analyse en composantes principales (ACP). Aussi, la réalisation de 57 entretiens auprès deresponsables scientifiques et techniques, ainsi que de 3 entretiens auprès de membres salariés du pôle decompétitivité, nous permet d'éclaircir les dynamiques de proximité à l'oeuvre dans les projets collaboratifs dupôle Systematic Paris-RégionThe competitiveness clusters (“pôles de compétitivité”), labeled in 2005 by the French government, aredesigned to support collaborative research and development (R&D) projects. Their originality is that theylead multiple organizations (companies, universities, research laboratories, etc.) geographically close toeach other to cooperate in order to generate innovations. Is geographical proximity a necessary condition forthe proper coordination of innovation activities in competitiveness clusters? This thesis aims to deepen theunderstanding of collaborative dynamics in R&D projects, in particular by focusing on non-spatial forms ofproximity (institutional, organizational, cognitive and social). Our field of inquiry is the competitiveness clusterSystematic Paris-Region over the period 2005-2015. We propose to analyze the territorial dynamics of thecluster, based on the study of the spatial evolution of cooperations, as well as the evolution of the positioningof organizations in collaborative R&D networks. These studies represent the construction and analysis ofmore than four million data. They involve the concepts and methods of networks theory, as well as principalcomponent analysis (PCA). In addition, 57 interviews with scientific and technical managers and 3 interviewswith employees of the competitiveness cluster enabled us to clarify the dynamics of proximity at work in thecollaborative projects of Systematic Paris-Region cluster