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Academic literature on the topic 'Assemblages'

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Published: 4 June 2021
Last updated: 30 July 2024

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Journal articles on the topic "Assemblages"

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Rogers, Jean Beyer, and Ellen K. Pikitch. "Numerical Definition of Groundfish Assemblages Caught Off the Coasts of Oregon and Washington Using Commercial Fishing Strategies." Canadian Journal of Fisheries and Aquatic Sciences 49, no. 12 (December 1, 1992): 2648–56. http://dx.doi.org/10.1139/f92-293.

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Numerical definition of species caught together by the groundfish trawl fishery operating off the Oregon and Washington coasts during 1985–87 indicated six major assemblages of species. Observers on commercial vessels recorded data allowing estimation of the weights of commercially important species caught in each tow. Assemblages were selected based on consistencies in three types of analysis of the species weights: detrended correspondence ordination, two-way indicator species clustering, and Bray–Curtis group average clustering. Two of the assemblages were dominated by a single species, one consisting largely of smooth pink shrimp (Pandalus jordani) and the other primarily of widow rockfish (Sebastes entomelas). The other assemblages identified were a deepwater rockfish assemblage, a deepwater Dover sole assemblage, a nearshore mixed-species assemblage, and a bottom rockfish assemblage. These assemblages of commercially cooccurring species may be treated as units in developing mixed-species management plans. The deepwater rockfish assemblage we identify has not been previously described.
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Dinnis, Rob, and Damien Flas. "Trou du Renard and the Belgian Aurignacian." Proceedings of the Prehistoric Society 82 (May 13, 2016): 1–25. http://dx.doi.org/10.1017/ppr.2016.4.

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A wealth of cave sites makes southern Belgium the most important area for understanding the north-western European Early Upper Palaeolithic. However, despite their abundance, the interpretation of many assemblages remains problematic. Here we present a new study of lithic material from layer B of Trou du Renard (Furfooz, Namur Province) and consider its place in the Belgian Aurignacian. The assemblage is typical of Late Aurignacian assemblages found across western Europe, underscoring the contrast between the Aurignacian and the periods that pre- and post-date it, when we instead see profound differences between north and south. The assemblage is apparently unmixed, distinguishing Trou du Renard from other key Belgian Aurignacian cave sites. A large proportion of the site’s lithic assemblage documents the production of small bladelets from carinated/busquéburin cores, suggesting that Trou du Renard served as a short-term hunting camp. Radiocarbon dating cannot pinpoint the assemblage’s age, though here it is argued to be c. 32–33,000bp(c. 36–37,000 calbp) on the basis of its similarity to the well-dated Aurignacian assemblage from Maisières Canal (Atelier de Taille de la Berge Nord-Estarea). For the same reason a third assemblage – Trou Walou layer CI-1 – is also argued to be contemporaneous. Trou du Renard, Maisières Canal and Trou Walou may represent three points in the same Late Aurignacian landscape. Differences between their lithic assemblages can be explained by the acquisition and transport of flint, and by a desire to produce small bladelets of highly standardised form irrespective of the size and shape of available blanks.
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Ito, Yoichi, Yuko Iijima, Naoyuki Itoh, and Yuya Kimura. "Multilocus genotyping of Giardia duodenalis isolates from breeding cattery cats in Japan." Journal of Feline Medicine and Surgery Open Reports 3, no. 2 (July 2017): 205511691774523. http://dx.doi.org/10.1177/2055116917745237.

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Objectives The present study reports the multilocus genotyping of Giardia duodenalis isolates from cats maintained in breeding catteries in Japan and discusses their potential for zoonotic transmission. Methods A total of 41 faecal samples positive for Giardia-specific antigen were procured from cats maintained in five breeding catteries and subjected to PCR to amplify four gene loci, namely small subunit ribosomal RNA ( SSU rRNA), glutamate dehydrogenase ( gdh), beta-giardin ( bg) and triose phosphate isomerase ( tpi ). The PCR-amplified DNA fragments were sequenced to determine the G duodenalis genotypes (synonym for assemblages). Results The most commonly occurring single assemblage was assemblage F (68.3%; n = 28/41), followed by assemblage A (12.2%; n = 5/41) and assemblage C (2.4%; n = 1/41). The mixed assemblages were identified as follows: assemblages F and A (9.8%; n = 4/41), assemblages F and C (4.9%; n = 2/41) and assemblages C and D (2.4%; n = 1/41). Additional sub-genotyping of assemblage A isolates based on three of the sequenced loci ( gdh, bg and tpi ) revealed that all eight isolates were identified as sub-assemblage AI and/or AII. Conclusions and relevance The present study is the first to report the detection of dog-adapted assemblages C and D in feline isolates from Japan. In addition, zoonotic sub-assemblage AI and human-adapted sub-assemblage AII were also identified. Thus, we concluded that the risk of transmission of G duodenalis from breeding cattery cats to humans is considerable and cannot be ignored.
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Mahon, Robin, Stephen K. Brown, Kees CT Zwanenburg, D. Bruce Atkinson, Kenneth R. Buja, Larry Claflin, Geoffrey D. Howell, Mark E. Monaco, Robert N. O'Boyle, and Michael Sinclair. "Assemblages and biogeography of demersal fishes of the east coast of North America." Canadian Journal of Fisheries and Aquatic Sciences 55, no. 7 (July 1, 1998): 1704–38. http://dx.doi.org/10.1139/f98-065.

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This study describes and maps demersal fish assemblages for the east coast of North America from Cape Hatteras, North Carolina, to Cape Chidley, Labrador, evaluates evidence for interannual shifts in assemblage distribution, and examines the relationship of the assemblages to accepted biogeographical boundaries. Demersal trawl survey data collected from 1975 to 1994 were analyzed. Visual classification of distribution maps for the 108 most abundant demersal species revealed nine species groups, based on both geography and depth distribution. Eighteen assemblage groups were identified using principal components analysis (PCA) and mapped. Assemblage groups were also identified by cluster analysis. Fish assemblages identified by both methods were spatially coherent. Assemblage distribution patterns were not consistent with accepted biogeographical boundaries. The PCA explained only 56.3% of the variance in distribution of the species, indicating that the assemblages should be interpreted as indeterminate, potentially adaptable entities rather than as rigid ecological constructs. Assemblages were persistent in composition through time but appeared to shift in location. The apparent looseness of the assemblages and their persistence through time in spite of severe impacts from fishing suggest that single-species management approaches may not be entirely inappropriate for the major groundfish species in the study area.
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García-Rodríguez, Mariano, Pere Abelló, Angel Fernández, and Antonio Esteban. "Demersal Assemblages on the Soft Bottoms off the Catalan-Levante Coast of the Spanish Mediterranean." Journal of Marine Biology 2011 (2011): 1–16. http://dx.doi.org/10.1155/2011/976396.

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The analysis of 255 bottom trawl samples obtained in annual experimental surveys (2007–2010) along the western Mediterranean shows the existence of five well-defined demersal assemblages that follow a depth distribution: (a) upper shelf assemblages, including two assemblages differentiated by the type of substrate (sand-muddy and terrigenous muddy bottoms); (b) a middle shelf assemblage; (c) an upper slope assemblage; (d) a middle slope assemblage. Faunally, they are dominated by fish (37% of 452 total species), followed by crustaceans (22%), molluscs (17%), echinoderms (9%), and other invertebrates (15%). The assemblages identified showed major alterations on the shelf and shelf edge and less pronounced ones on the upper and middle slope. The average diversity values were more or less high, evidencing the high species richness in the western Mediterranean. The identified assemblages may facilitate future multispecies fisheries management based on an ecosystem approach.
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Pabis, Krzysztof, and Magdalena Błażewicz-paszkowycz. "Distribution and diversity of cumacean assemblages in Admiralty Bay, King George Island." Polish Polar Research 32, no. 4 (January 1, 2011): 341–54. http://dx.doi.org/10.2478/v10183-011-0024-6.

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Distribution and diversity of cumacean assemblages in Admiralty Bay, King George IslandEleven species of cumaceans were found in 105 samples collected in Admiralty Bay (King George Island) in the summers of 1984/85 and 1985/86, from 20 to 500 m depth range. Four cumacean assemblages were distinguished using the multivariate analysis. They were characterized by the dominance of one or two species often with low density values. Two assemblages were found in open waters of Admiralty Bay. The first inhabited on sandy-clay-silt and silty-clay-sand bottom deposits in the depth range from 140 to 330 m, withCampylaspis maculata(1.6 ± 2.1 ind./0.1m2; F = 72.4%) andLeuconsp. (1.4 ± 1.6 ind./0.1m2; F = 68.9%) as key species. The second assemblage was found in the depth range from 50 to 120 m with silty-sand sediments, and it was characterized by the presence of Vauthompsonia inermis (6.5 ± 6.6 ind./0.1m2; F = 92.0%). A third assemblage was found in shallow waters influenced by glaciers in the bottom area of Ezcurra Inlet. It was characterized by sandy-clay-silt sediments and the presence ofEudorella splendida(14.6 ± 9.4 ind./0.1m2; F = 100.0%) as a core species. The last assemblage was found in the shallow sublittoral (50-100 m) of Ezcurra Inlet and the central basin, withDiastylis anderssoni armata(1.5 ± 1.1 ind./0.1m2; F = 85.7%) andDiastylopsis goekei(1.1 ± 1.0 ind./0.1m2; F = 71.4%) as the most frequent and abundant species.V. inermisis considered a eurytopic species with high frequency in the whole material, and was present in all four distinguished assemblages.E. splendidaandD. goekeiwere also recorded in each of the assemblages, but their total frequency was lower.
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Frezza, Virgilio, and Letizia Di Bella. "Distribution of recent ostracods near the Ombrone River mouth (Northern Tyrrhenian Sea, Italy)." Micropaleontology 61, no. 1-2 (2015): 101–14. http://dx.doi.org/10.47894/mpal.61.1.08.

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Ostracod assemblages of 52 samples, collected between 15 and 50m water depth on the Southern Tuscany continental shelf (Northern Tyrrhenian Sea), were analysed. A total of 68 species and 39 genera was determined. Q-mode cluster analysis performed on the 22 most abundant species (>5% in at least one sample) led to identification of clusters (and subclusters) corresponding to four distinct ostracod assemblages. The first assemblage is characterised by the high dominance of Cytheridea neapolitana and is probably linked to an organic matter enrichment, in silty clay bottom; the other three assemblages are more diversified and are dominated, with lower percentages, by species typical of infralittoral and circalittoral environments: C. neapolitana, Cytheropteron ruggierii and Loxoconcha subrugosa assemblage (on silty clay sediments), Pontocythere turbida assemblage (silty sand and silty clay substrates) and Loxoconcha ovulata assemblage (sandy clay and vegetated bottoms). The distribution of ostracod assemblages shows a good correlation with the benthic foraminiferal assemblages founded in the investigated area. Nevertheless, the recognised low diversity can be related to an organic matter enrichment.
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Siddon, Elizabeth C., Janet T. Duffy-Anderson, Kathryn L. Mier, Morgan S. Busby, and Lisa B. Eisner. "Seasonal, interannual, and spatial patterns of community composition over the eastern Bering Sea shelf in cold years. Part II: ichthyoplankton and juvenile fish." ICES Journal of Marine Science 75, no. 1 (August 13, 2017): 87–101. http://dx.doi.org/10.1093/icesjms/fsx123.

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Abstract Climate-mediated oceanographic changes have led to protracted periods of above- or below-average water temperatures over the eastern Bering Sea shelf since the early 2000s. Ecosystem components, from phytoplankton to marine birds, have shown dichotomous responses to these temperature stanzas. Understanding within-stanza responses is fundamental to modelling efforts that project ecosystem responses under future climate scenarios. This study describes fish communities associated with Walleye Pollock during the age-0 period and also examines within-stanza homogeneity of assemblages. Spatial patterns of assemblage structure are compared with pre-defined ecoregions and environmental indices are assessed to determine potential mechanisms that delineate species assemblages. Walleye Pollock, rockfishes, Sand Lance, and Northern Rock Sole contributed to spring assemblages in every year. Assemblages were delineated by across-shelf gradients in 2008 and 2010 while 2009 assemblages showed less spatial structure. In summer, the diversity of fish assemblages increased across years but early-stage juvenile Walleye Pollock represented a small portion of the total abundance in 2009. Environmental gradients were related to fish assemblages, but patterns were along-shelf in 2008 and across-shelf in 2010. In fall, late-stage juvenile Walleye Pollock dominated the catch in 2008, but did not typify any assemblage in 2009. Overall, patterns of assemblage structure were not consistent with pre-defined ecoregions. Assemblage structure in 2009 was unique and indicates that within-stanza variability may complicate modelling projections based on ecosystem-level responses to climate changes.
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Robinson, Clifford L. K., and Jennifer Yakimishyn. "The persistence and stability of fish assemblages within eelgrass meadows (Zostera marina) on the Pacific coast of Canada." Canadian Journal of Fisheries and Aquatic Sciences 70, no. 5 (May 2013): 775–84. http://dx.doi.org/10.1139/cjfas-2012-0339.

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The persistence and stability of fish assemblages found in 34 eelgrass (Zostera marina) meadows along the British Columbia coast was examined from 2004 to 2011. Assemblage persistence (nontrending species composition) and assemblage stability (constancy in abundance over time) were assessed using a time-lag regression method that tests for temporal turnover within short time series. Overall, 85% of the fish assemblages persisted, and 80% of the assemblages exhibited stability in abundance over the 8-year study. Environmental conditions in 33 of 34 meadows did not change substantially over the 8 years, and the low interannual variability may have contributed to the high persistence and stability of the fish assemblages. The lack of temporal turnover in relatively undisturbed eelgrass fish assemblage properties is a critical element for effective monitoring of coastal ecosystem integrity.
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Zhang, Hui, Weiwei Xian, and Shude Liu. "Autumn ichthyoplankton assemblage in the Yangtze Estuary shaped by environmental factors." PeerJ 4 (April 19, 2016): e1922. http://dx.doi.org/10.7717/peerj.1922.

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This study investigated the response of the ichthyoplankton community to environmental changes in the Yangtze Estuary using canonical correspondence analysis. Ichthyoplankton community and environmental data were recorded during the autumns of 1998, 2000, 2002, 2003, 2004, 2007 and 2009. Among the ichthyoplankton, the dominant larval and juvenile families were the Engraulidae, Gobiidae and Salangidae, and the most common eggs were fromTrichiurus lepturus. The ichthyoplankton was identified via canonical correspondence analysis to three assemblages: an estuary assemblage dominated byChaeturichthys stigmatias, a coastal assemblage dominated byEngraulis japonicusandStolephorus commersonii, and an offshore assemblage dominated byTrichiurus lepturus. Regarding environmental factors in the Yangtze Estuary, suspended matter and surface seawater salinity were the main factors influencing the distributions of the different assemblages, while sediment from the Yangtze River during the rainy season and chlorophyllawere the principle drivers of the annual variances in the distribution of ichthyoplankton assemblages. Our aims in this study were to provide detailed characterizations of the ichthyoplankton assemblage in the autumns of seven years, examine the long-term dynamics of autumn ichthyoplankton assemblages, and evaluate the influence of environmental factors on the spatial distribution and inter-annual variations of ichthyoplankton assemblages associated with the Yangtze Estuary.
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Dissertations / Theses on the topic "Assemblages"

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Zerrouki, Djamal. "Assemblages colloÏdaux organisés." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2007. http://pastel.archives-ouvertes.fr/pastel-00003919.

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Le travail de recherche exposé dans cette thèse, montre dans la premier partie la mise en oeuvre de la méthode d'émulsification pour la préparation de petits agrégats de forme anisotrope monodisperse et de forme géométrique bien définie et on a montré que la maîtrise des paramètres de la formulation permet la sélection et la production d'un maximum d'agrégats de formes données (dimère, trimère, tétramère). On a montré la faisabilité et la possibilité d'assembler tête-tête les différents types d'agrégats de façon organisée et directionnelle, grâce à la fonctionnalisation des têtes des agrégats, avec des fonctions réactives utilisant la force d'adhésion spécifique (couple biotine/streptavidine). En deuxième partie, on a fait intervenir des forces magnétiques pour forcer et accélérer le processus d'assemblage par rapport à des forces spécifiques qui sont basées sur les effets de diffusion ; on a montré la formation de chaînes colloïdales de structure variable avec la mise en évidence des effets de relaxation sur les chaînes, rotation et torsion, qui dépendent de l'intensité de champ appliqué et de la morphologie des particules (Janus avec une partie magnétique, doublets avec un anneau). Enfin, nous avons conçu des doublets asymétriques avec des anneaux magnétiques qui engendrent la formation de chaînes chirales sous forme d'hélice. Et on a mis en évidence l'analogie entre les colloïdes et les macromolécules sur le plan structural par un simple auto-assemblage.
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Mlot, Nathaniel J. "Fire ant self-assemblages." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50247.

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Fire ants link their legs and jaws together to form functional structures called self- assemblages. Examples include floating rafts, towers, bridges, and bivouacs. We investigate these self-assemblages of fire ants. Our studies are motivated in part by the vision of providing guidance for programmable robot swarms. The goal for such systems is to develop a simple programmable element from which complex patterns or behaviors emerge on the collective level. Intelligence is decentralized, as is the case with social insects such as fire ants. In this combined experimental and theoretical study, we investigate the construction of two fire ant self-assemblages that are critical to the colony’s survival: the raft and the tower. Using time-lapse photography, we record the construction processes of rafts and towers in the laboratory. We identify and characterize individual ant behaviors that we consistently observe during assembly, and incorporate these behaviors into mathematical models of the assembly process. Our models accurately predict both the assemblages’ shapes and growth patterns, thus providing evidence that we have identified and analyzed the key mechanisms for these fire ant self-assemblages. We also develop novel techniques using scanning electron microscopy and micro-computed tomography scans to visualize and quantify the internal structure and packing properties of live linked fire ants. We compare our findings to packings of dead ants and similarly shaped granular material packings to understand how active arranging affects ant spacing and orientation. We find that ants use their legs to increase neighbor spacing and hence reduce their packing density by one-third compared to packings of dead ants. Also, we find that live ants do not align themselves in parallel with nearest neighbors as much as dead ants passively do. Our main contribution is the development of parsimonious mathematical models of how the behaviors of individuals result in the collective construction of fire ant assemblages. The models posit only simple observed behaviors based on local information, yet their mathe- matical analysis yields accurate predictions of assemblage shapes and construction rates for a wide range of ant colony sizes.
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Snape, S. R. "Mortuary assemblages from Abydos." Thesis, University of Liverpool, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375851.

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Olive, Maxime. "Démontabilité des assemblages structuraux." Thesis, Bordeaux 1, 2008. http://www.theses.fr/2008BOR13705/document.

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Le procédé INDAR (INnovative Disassembling Adhesives Research), breveté par RESCOLL, est une solution technologique qui vise à décoller sur commande les joints collés structuraux dans le but de simplifier les opérations de maintenance et de recyclage. Ce procédé consiste à reformuler soit des primaires d’adhérence, soit des adhésifs structuraux en incorporant des composés chimiques particuliers. Les travaux réalisés dans le cadre de cette thèse ont permis de mieux comprendre le phénomène de décollement et de pouvoir ainsi l’étendre à d’autres adhésifs et d’autres conditions d’activation (température différente, méthode de chauffage). Les résultats obtenus ont ouvert des perspectives très intéressantes dans de nombreux domaines (aéronautique, défense, automobile) et confirmer l’intérêt stratégique de cette thématique de recherche
The INDAR process (INnovative Disassembling Adhesives Research), patented by RESCOLL, is a technological answer for the dismantling on command of structural bonded joints (easier recycling and maintenance). This process is based on the reformulation of primers or adhesives with specific chemical compounds. The works carried out enabled a better understanding of the debonding mechanism, in order to extend it to other configurations of adhesives and activation conditions (different temperature, heating method). The results obtained broadened the scope of possible applications for this technology (aeronautics, defence, automotive) and confirmed the strategical interest ot this topic
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Mauroy, Chloé. "Fusion d'auto-assemblages lipidiques." Toulouse 3, 2010. http://thesesups.ups-tlse.fr/1039/.

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Les processus de fusions membranaires sont des processus vitaux dans les systèmes biologiques. Ils nécessitent une déstructuration de l'organisation membranaire. La fusion est un phénomène parfaitement contrôlé qui ne s'effectue pas de façon spontanée du fait de l'existence de barrières énergétiques. Pour abolir ces barrières, il est nécessaire d'apporter de l'énergie au système. Dans une première partie est étudiée l'électrofusion entre deux vésicules unilamellaires géantes (GUVs), pour laquelle il est nécessaire d'appliquer un champ électrique exogène ayant pour effet l'électroperméabilisation des membranes pour créer un état fusogène. Le champ électrique externe peut induire la déstabilisation des membranes permettant alors la fusion entre ces deux édifices membranaires en contact lors de l'impulsion. Nous avons caractérisé, d'une part, le rôle des états de phase des auto-assemblages lipidiques et les valeurs seuil du potentiel transmembranaire nécessaire à l'électroperméabilisation, et, d'autre part, les modifications morphologiques associées à cette homofusion. Dans une seconde partie est étudiée la fusion spontanée entre des vésicules catanioniques et des GUVs de différentes compositions et états de phase. Nous avons pu mettre en évidence le fait que les interactions entre ces deux systèmes dépendaient d'une part de l'état de phase des GUVs et d'autre part des interactions électrostatiques entre ces deux systèmes. Pour que la fusion soit effective, il apparaît nécessaire d'avoir une désorganisation de l'édifice membranaire. Cette désorganisation est ici induite par la présence d'un champ électrique endogène révélé par le potentiel zêta des vésicules catanioniques
Membrane fusion processes play a key role in biological system. Fusion processes involve destabilization of membrane organization. This is a controlled phenomenon which is not spontaneous because of energetic barriers. To abolish these barriers, it is necessary to provide energy to the system. In a first part, electrofusion between two giant unilamellar vesicles (GUVs) was studied. The fusogenic state was obtained by the application of an exogenous electric field to induce membrane electropermeabilization. External electric field can induce membrane destabilization allowing fusion between these two membrane systems in contact during the electric pulse. We characterized, on the first hand, the role of phase states of the membrane and the critical electric field for electropermeabilization and, on the other hand, the morphological modifications associated to this homofusion. In a second part, spontaneous fusion between catanionic vesicles and GUVs with different compositions and phase states was studied. We underline the fact that the interactions between these two systems depend, on the first hand, on the phase states of the GUVs and, on the other hand, on the electrostatic interactions between them. Fusion is induced when the membrane is destabilized. This destabilization is induced here by the presence of an endogenous electric field revealed by the zeta potential of the catanionic vesicles
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Palmer, Denise D. "Late Holocene planktic foraminiferal assemblages from Orca Basin : effects of dissolution on faunal assemblages." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001693.

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Schull, Guillaume. "Dynamique d'auto-assemblages moléculaires bidimensionnels." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2006. http://tel.archives-ouvertes.fr/tel-00143236.

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L'étude des processus intervenant dans la réalisation d'auto-assemblages moléculaires est au centre de nombreuses recherches en physique, chimie ou biologie. Dans ce cadre les organisations de surface formant des structures mono-couche constituent des systèmes particulièrement attractifs autant pour leur utilisation potentielle, que pour la simplification apparente des processus d'organisation liés à la réduction de la dimensionnalité. En outre, ces systèmes peuvent être étudiés directement à l'échelle de la molécule unique à partir de microscopes en champ proche. Ces techniques permettent également d'investiguer en temps réel les processus dynamiques intervenant au cours des processus d'assemblages. Les résultats de microscopie à effet tunnel rapportés dans cette thèse décrivent tout d'abord, et dans le détail, les mécanismes régulant l'organisation d'une famille de molécules modèles sur une surface de graphite HOPG. Dans ce cadre, nous verrons de manière quantitative les contributions respectives des interactions (ici non-covalentes\ de type Van der Waals) intervenant entre molécules et entre molécules et substrat. Cette étape constituera la base d'une étude dédiée à l'observation et la compréhension des mécanismes dynamiques intervenant à la surface de l'échantillon, au cours, et après l'organisation des molécules sur la surface de graphite. Ces deux chapitres nous permettrons de tirer les enseignements nécessaires à la réalisation en surface d'auto-assemblages nano-poreux aux propriétés originales. Ceux-ci se révèlerons en effet, suffisamment stables pour exister à température ambiante et permettre le piégeages de molécules hôtes au sein de leurs pores, tout en présentant des propriétés dynamiques particulières permettant un contrôle circonstancié et originale du déplacement en surface de ces hôtes de cavités en cavités. Nous montrerons que ces assemblages sont assimilables à des tamis moléculaires de surface dont nous décrirons le fonctionnement et les propriétés en détails. Des résultats, rapportant l'influence d'un champ optique incident sur ces monocouches de molécules, concluent cette thèse. Ils constituent une première étape en vue d'un contrôle externe et local de la dynamique des molécules en surface
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Schaeffer, Gaël. "Dynamères multiples et assemblages supramoléculaires." Phd thesis, Université de Strasbourg, 2012. http://tel.archives-ouvertes.fr/tel-00764047.

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Tous les travaux effectués dans le cadre de cette thèse peuvent être placés sous la bannière de la chimie supramoléculaire. Différentes thématiques ont été abordées au cours de ces projets, qui s'inscrivent dans la continuité de ceux effectués précédemment au laboratoire.Les polymères, qu'ils soient supramoléculaires ou dynamiques (dynamères), ont constitué le squelette de cette thèse en étant étudiés en solution et à l'interface surface-solution. Le développement de certains autres axes de recherche s'est imposé à nous. Certains monomères utilisés dans la formation de nouveaux polymères ayant présenté un comportement inattendu aussi bien à l'interface surface-solution qu'en solution ; une étude approfondie a été menée pour en comprendre les raisons.Les résultats présentés dans ce manuscrit de thèse permettent d'affiner la compréhension de certains concepts en chimie supramoléculaire et dynamique. La première partie s'attache à montrer que la multiplication (ou la diversification) des fonctions dynamiques dans la chaîne principale d'un dynamère est une stratégie exploitable pour augmenter la complexité d'un système polymérique. La seconde partie de ce manuscrit présente différents auto-assemblages à l'interface surface-solution ainsi que l'étude approfondie d'un système auto-assemblé particulier et inattendu. Ces travaux tendent donc à améliorer la compréhension de la matière (par l'augmentation de la complexité dans des polymères dynamiques) et de ses interactions (par l'étude et la caractérisation de nouveaux auto-assemblages).
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Berry, Christopher Mark. "Devonian plant assemblages from Venezuela." Thesis, Cardiff University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492235.

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A rich macroflora has been collected from eleven localities in the Lower Member of the Campo Chico Formation in the Cafto Colorado area of the Sierra de Perija, Western Venezuela. A new geological map of the area has been produced. The sediments were deposited in a deltaic environment. Faunal evidence suggests an age between early Givetian and Late Devonian. Palynological preparations suggest an age of Givetian or latest Eifelian for the lower plant-bearing horizons. The plants themselves indicate a latest Eifelian-early Frasniana age. Some nineteen plant taxa are recorded, including five new genera and ten new species. They occur principally as compression fossils, although fragmentary permineralised material was discovered The lycophyte flora is composed of at least eight species belonging to the genera Ledercqia, Colpodexylon, Haskinsia, Archaeosigillaria and Lycopodites. Zosterophylls include Sawdonia and Serrulacaulis. Axes of Taeniocrada'-like appearance have probable S-type water conducting cells. Two species belonging to two new genera are attributed to the Trimerophytina, the definition of this subdivision being broadened. A new cladoxylopsidh as fertile ultimate appendages branched in a three-dimensional dichotomous manner, and recurved pairs of terminal sporangia. A compression fossil is possibly related to Iridopteridales. One species remains incertae sedis. The progymnosperms(including ?Rellimia) and a number of types of sterile axes remain unworked. Contributions have been made to the knowledge of existing taxa, particularly Archaeosigillaria, Haskinsia, Colpodexylon and Serrulacaulis. Eifelian/Frasnian floras world-wide are discussed. The Venezuelan flora, particularly the lycophyte element, is most similar to Givetian and early Frasnian assemblages from New York State, and less so to the German and Belgian assemblages which lack diverse lycophytes. A brief investigation of the biogeography of the Devonian has suggested a palaeogeographic model which is relatively consistent with the biogeographical data, and that the Venezuelan assemblages may not be representative of other Gondwanan floras
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Sellem, Eric. "Caractérisation probabiliste des assemblages hyperstatiques." Châtenay-Malabry, Ecole centrale de Paris, 2000. http://www.theses.fr/2000ECAP0903.

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Le soudage ou le rivetage (ou bien encore le collage ou le boulonnage) sont des procédés d'assemblage très répandus dans l'industrie. L'automobile, l'aéronautique, les navires, etc. , sont autant d'applications qui font appel à cette technique. Si ces procédés offrent la possibilité de réaliser des structures de géométrie complexe, en revanche, la géométrie de l'assemblage est rarement celle escomptée. En effet, compte tenu des différentes variations, qu'elles soient liées à la géométrie ou au procédé utilisé, l'opération d'assemblage engendre des variations géométriques sur l'assemblage. Les nouveaux systèmes intégrés de C. F. A. O engendrent une demande croissante pour des outils de simulation qui sont capables de simuler le processus d'assemblage. En ce qui concerne les pièces souples, il n'existe pas de méthode de calcul d'aide au tolérancement et à la métrologie qui soit exhaustive et rapide. L'objectif visé dans ce travail est de proposer des outils de simulation pour effectuer des analyses fonctionnelles et des analyses statistiques d'assemblages hyperstatiques. Ce travail se divise en trois parties : au premier chapitre, un premier modèle analytique modélise les tolérances pour l'analyse probabiliste. Le chapitre 2 présente un deuxième modèle pour la mise en position relative de deux pièces non idéales. Ce modèle est ensuite appliqué à l'analyse des hyperstatismes des mécanismes. Le chapitre 3 décrit un outil d'analyse statistique de tolérances des assemblages hyperstatiques. Cet outil est issu des deux modèles exposés au chapitre 1 et au chapitre 2. Une analyse "pire des cas" est également présentée.
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Books on the topic "Assemblages"

1

Ong, Aihwa, and Stephen J. Collier, eds. Global Assemblages. Oxford, UK: Blackwell Publishing Ltd, 2007. http://dx.doi.org/10.1002/9780470696569.

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Wijaya, Hendri Yulius. Intimate Assemblages. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2878-1.

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Cons, Jason, and Michael Eilenberg, eds. Frontier Assemblages. Chichester, UK: John Wiley & Sons, Ltd, 2019. http://dx.doi.org/10.1002/9781119412090.

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Banerjea, Niharika, Paul Boyce, and Rohit K. Dasgupta. COVID-19 Assemblages. London: Routledge India, 2022. http://dx.doi.org/10.4324/9781003262251.

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Duff, Cameron. Assemblages of Health. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-8893-9.

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editor, Hendgen Aude, and Musée de l'hospice Saint-Roch, eds. Antoni Clavé: Assemblages. Issoudun]: Musée de l'hospice Saint-Roch Issoudun, 2021.

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Matthys, JH, ed. Masonry: Components to Assemblages. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 1990. http://dx.doi.org/10.1520/stp1063-eb.

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Couper, Max. Installations, assemblages and drawings. London: Museum of Installation, 1991.

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Verboven, Marie. Verbeke Foundation: Collages & assemblages. [Kemzeke, Belgium]: Verbeke Foundation, 2017.

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Riccardo, Francovich, Patterson Helen, Barker Graeme, and Populus Project, eds. Extracting meaning from ploughsoil assemblages. Oxford: Oxbow Books, 2000.

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Book chapters on the topic "Assemblages"

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Savin-Baden, Maggi. "Assemblages." In Digital and Postdigital Learning for Changing Universities, 30–46. London: Routledge, 2023. http://dx.doi.org/10.4324/9781003331186-4.

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Betancur, John J., and Catalina Ortiz Arciniegas. "Urban assemblages and dis-assemblages." In Disassembled Cities, 113–37. Abingdon, Oxon; New York, NY: Routledge, 2019. | Series: Global urban studies: Routledge, 2018. http://dx.doi.org/10.4324/9781315104614-10.

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Wijaya, Hendri Yulius. "Intimate Assemblages: Sexual Technologies and Identity Politics in Indonesia." In Intimate Assemblages, 1–35. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2878-1_1.

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Wijaya, Hendri Yulius. "Intimate Nostalgia: Emerging Gay Activism and Technologies of Localization." In Intimate Assemblages, 39–75. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2878-1_2.

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Wijaya, Hendri Yulius. "Intimate Tutelage: Self-Care, Community Building, and Technologies of Sexual Health." In Intimate Assemblages, 77–108. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2878-1_3.

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Wijaya, Hendri Yulius. "Intimate Injuries: LGBT Rights, Technologies of Citizenship, and Queer Nudge to Democracy." In Intimate Assemblages, 111–48. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2878-1_4.

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Wijaya, Hendri Yulius. "Intimate Countermovements: Technologies of Anti-queer Futurity in the Era of Marriage Equality." In Intimate Assemblages, 149–79. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2878-1_5.

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Wijaya, Hendri Yulius. "Intimate Ecologies: SOGIE in Motion and Entanglements." In Intimate Assemblages, 183–216. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2878-1_6.

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Wijaya, Hendri Yulius. "Epilogue Intimate Present (and Futures)." In Intimate Assemblages, 217–23. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2878-1_7.

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Cons, Jason, and Michael Eilenberg. "Introduction: On the New Politics of Margins in Asia." In Frontier Assemblages, 1–18. Chichester, UK: John Wiley & Sons, Ltd, 2018. http://dx.doi.org/10.1002/9781119412090.ch0.

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Conference papers on the topic "Assemblages"

1

Lasch, Chris, and Benjamin Aranda. "Assemblages." In ACM SIGGRAPH 2009 Art Gallery. New York, New York, USA: ACM Press, 2009. http://dx.doi.org/10.1145/1667265.1667280.

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Jabbar, Karim, and Pernille Bjørn. "Blockchain Assemblages." In CHI '19: CHI Conference on Human Factors in Computing Systems. New York, NY, USA: ACM, 2019. http://dx.doi.org/10.1145/3290605.3300496.

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Tiulescu, Monica, and Alexandra Neyman. "Growing Extreme Assemblages." In ACADIA 2014: Design Agency. ACADIA, 2014. http://dx.doi.org/10.52842/conf.acadia.2014.035.

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O'Neill, María de Mater, Omayra Rivera-Crespo, Yazmín M. Crespo-Claudio, Irmaris Santiago-Rodríguez, and Camila Hernandez. "COUNTERnarratives: Social Assemblages." In PDC 2022: Participatory Design Conference 2022. New York, NY, USA: ACM, 2022. http://dx.doi.org/10.1145/3537797.3537903.

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Prestopnik, Nathan R., and Kevin Crowston. "Citizen science system assemblages." In the 2012 iConference. New York, New York, USA: ACM Press, 2012. http://dx.doi.org/10.1145/2132176.2132198.

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Lienhardt, Michael, Alan Schmitt, and Jean-Bernard Stefani. "Typing communicating component assemblages." In the 7th international conference. New York, New York, USA: ACM Press, 2008. http://dx.doi.org/10.1145/1449913.1449933.

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Finnegan, Seth, Mary L. Droser, and James G. Gehling. "UNUSUAL PATCHINESS OF EDIACARAN BENTHIC ASSEMBLAGES RELATIVE TO PHANEROZOIC AND MODERN BENTHIC ASSEMBLAGES." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-307165.

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Monti, Lanfranco. "Les assemblages des réacteurs bouillants." In Thermohydraulique des assemblages combustibles des réacteurs à eau légère. Les Ulis, France: EDP Sciences, 2013. http://dx.doi.org/10.1051/jtsfen/2013the09.

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Venn, Stephen. "Insect assemblages of urban grasslands." In 5th European Congress of Conservation Biology. Jyväskylä: Jyvaskyla University Open Science Centre, 2018. http://dx.doi.org/10.17011/conference/eccb2018/108162.

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Zhou, Xiaomu, Mark Ackerman, and Kai Zheng. "CPOE workarounds, boundary objects, and assemblages." In the 2011 annual conference. New York, New York, USA: ACM Press, 2011. http://dx.doi.org/10.1145/1978942.1979439.

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Reports on the topic "Assemblages"

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Souther, J. G., and C. J. Yorath. Chapter 10: Neogene Assemblages. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/134095.

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Williams, H., and A. C. Grant. Tectonic assemblages, Atlantic region, Canada. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1998. http://dx.doi.org/10.4095/209977.

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Aitken, J. D., and M. E. McMechan. Chapter 5: Middle Proterozoic Assemblages. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/134083.

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Gabrielse, H., and R. B. Campbell. Chapter 6: Upper Proterozoic Assemblages. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/134085.

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Souther, J. G., and C. J. Yorath. Chapitre 10: Assemblages du Néogène. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/134096.

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Aitken, J. D., and M. E. McMechan. Chapitre 5: Assemblages du Proterozoique Moyen. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/134084.

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Gabrielse, H., and R. B. Campbell. Chapitre 6: Assemblages du Proterozoique Supérieur. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/134086.

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Fritz, W. H., M. P. Cecile, B. S. Norford, D. Morrow, and H. H J Geldsetzer. Chapter 7: Cambrian to Middle Devonian Assemblages. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/134087.

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Yorath, C. J., D. F. Stott, J. Dixon, H. Gabrielse, R G Anderson, J. G. Souther, G J Woodsworth, et al. Chapter 9: Upper Jurassic To Paleogene Assemblages. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/134093.

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Fritz, W. H., M. P. Cecile, B. S. Norford, D. Morrow, and H. H J Geldsetzer. Chapitre 7: Assemblages du Cambrien au Devonien Moyen. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/134088.

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