Relevant bibliographies by topics / Polypes

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Polypes'

Author: Grafiati
Published: 4 June 2021
Last updated: 27 January 2023

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Journal articles on the topic "Polypes"

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Bentefouet, TL, MD Fall, A. Sow, MM Diop, and I. Thiam. "C36: Profil épidémiologique et anatomopathologique des polypes du tube digestif à Thiès (Sénégal) : A propos de 56 cas." African Journal of Oncology 2, no. 1 Supplement (March 1, 2022): S16. http://dx.doi.org/10.54266/ajo.2.1s.c36.wf4yqvyw4k.

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INTRODUCTION : Le polype correspond à des lésions en relief dans la lumière du tube digestif. Certains polypes classés comme bénins peuvent évoluer vers des lésions dysplasiques, puis vers un cancer. L’objectif de ce travail était d’étudier les aspects épidémiologiques et anatomopathologiques des polypes du tube digestif à Thiès et d’évaluer la fréquence et le degré de dysplasie dans les différentes lésions observées. MATERIELS ET METHODES : Il s’agit d’une étude rétrospective sur une période de cinq ans (2016 à 2020). Les données ont été collectés à partir des dossiers des patients au niveau du laboratoire d’Anatomie Pathologique de la région de Thiès. Pour chaque patient, nous avons établi une fiche d’exploitation comportant l’âge, le sexe, les circonstances de découverte, le siège du polype, le nombre de polype, l’aspect macroscopique, et le type histologique. Les données ont été saisies et analysées par le logiciel Excel© 2010 et SPSS© 20. RESULTATS : Nous avons colligé au total 56 cas de polypes du tube digestif. Le sex-ratio était d’un. L’âge moyen était de 38 ± 24 ans (trois à 84 ans). Les épigastralgies et les rectorragies, constituaient les principales circonstances de découverte. Les polypes siégeaient préférentiellement au niveau de l’estomac et du colon. Les autres localisations étaient rares dans l’ensemble du tube digestif à des proportions variables. Il s’agissait le plus souvent de polypes uniques avec dans la majorité des cas, une taille supérieure ou égale à 10 mm (48% des cas). Les types histologiques étaient variés et les lésions dysplasiques étaient retrouvées dans six cas (10,7%). CONCLUSION : Le dépistage précoce des polypes dysplasiques permet de prévenir la survenue de certains cancers digestifs gastriques et colorectaux.
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Facon, Fr, J. Paris, and P. Dessi. "Les polypes antrochoanaux ou polype de Killian." Annales d'Otolaryngologie et de Chirurgie Cervico-faciale 121, no. 6 (December 2004): 315–21. http://dx.doi.org/10.1016/s0003-438x(04)95528-4.

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Vallot, Thierry. "Polypes gastriques." La Presse Médicale 36, no. 10 (October 2007): 1412–17. http://dx.doi.org/10.1016/j.lpm.2007.01.025.

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AIT IDIR, Karim. "Digestive Polyps and polyposis in children. Update and literature review." Batna Journal of Medical Sciences (BJMS) 3, no. 2 (December 31, 2016): 65–70. http://dx.doi.org/10.48087/bjmsra.2016.3202.

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Les polypes digestifs constituent une entité peu étudiée chez l’enfant. Ils offrent une symptomatologie peu spécifique. L’approche diagnostique est basée sur une bonne anamnèse, un examen clinique complet et des examens complémentaires ciblés. L’exploration endoscopique et l’étude histologique constituent la pierre angulaire de la prise en charge. Il peut s’agir d’une polypose entrant dans le cadre d’un syndrome génétique ou d’un polype isolé.
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Pienkowski, P. "Polypes coliques sporadiques." Acta Endoscopica 31, S4 (July 2001): 571–75. http://dx.doi.org/10.1007/bf03018005.

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Faraj, L., C. Trastour, M. Piche, J. Delotte, and A. Bongain. "Surprenants polypes vaginaux !" Journal de Gynécologie Obstétrique et Biologie de la Reproduction 39, no. 1 (February 2010): 61–63. http://dx.doi.org/10.1016/j.jgyn.2009.09.003.

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Molimard, Chloé, Lucine Vuitton, Zakia Boulahdour, Stéphane Koch, Loïc Chaigneau, Pierre Mathieu, and Séverine Valmary-Degano. "Polypes œsophagiens : le polype géant fibrovasculaire de l’œsophage n’existe plus !" Annales de Pathologie 39, no. 3 (June 2019): 221–26. http://dx.doi.org/10.1016/j.annpat.2019.02.011.

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Archanioti, Paraskevi, Aurélie Bornand, Christine Sempoux, Sheila Unger, Alain Schoepfer, Maxime Robert, and Grégoire David. "ABC des polypes coliques." Revue Médicale Suisse 15, no. 660 (2019): 1483–87. http://dx.doi.org/10.53738/revmed.2019.15.660.1483.

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Huorka, M., J. Payer, I. Duris, M. Mikulecky, H. Kratochvilova, and P. Ondrejka. "Gastrine et polypes coliques." Acta Endoscopica 22, no. 3 (May 1992): 347–51. http://dx.doi.org/10.1007/bf02965166.

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Desurmont and Houcke. "Les polypes du côlon." Acta Endoscopica 18, S1 (January 1988): 10. http://dx.doi.org/10.1007/bf02966046.

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Dissertations / Theses on the topic "Polypes"

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Dufilhol, Cédric Buecher Bruno. "Polypes hyperplasiques atypiques fréquence et associations lésionnelles /." [S.l.] : [s.n.], 2004. http://theses.univ-nantes.fr/thesemed/SPEdufilhol.pdf.

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Watelet, Clotilde. "Immunologie de la polypose nasosinusienne." Nancy 1, 2001. https://hal.univ-lorraine.fr/tel-01746441.

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La polypose nasosinusienne est une entité clinique bien définie et communément rencontrée dans les pays industrialisés dont l'étiologie demeure obscure. Plusieurs hypothèses ont été avancées, allant de la théorie mécanique à l'implication du système immunitaire local. Il est admis à ce jour que le polype est le siège d'une réaction inflammatoire pérennisée par des facteurs cellulaires et solubles. Parmi ces facteurs, les éosinophiles sont présents de façon constante et prolongée au sein du tissu polypeux. Le micro-environnement local auquel participent les cytokines favoriserait leur accumulation et leur rétention. Le moindre drainage de ce tissu favorise également la formation de la structure polypeuse. Le traitement corticoi͏̈de est efficace sur cette pathologie mais les patients semblent améliorés sans que disparaissent pour autant ces éosinophiles de leurs sécrétions ni de leurs tissus. Nous nous sommes proposés dans ce travail d'analyser le compartiment leucocytaire des sécrétions nasales et son contenu en médiateurs solubles de l'immunité innée dans le cadre de la polypose nasosinusienne et d'autres pathologies rhinologiques. Par ailleurs, nous avons exploré l'histologie des polypes, d'une part par une analyse rétrospective tenant également compte du traitement corticoi͏̈de,̉ d'autre part par une recherche de marqueurs d'activation de la muqueuse nasale sur des échantillons de tissu polypeux, Enfin, une vaste étude clinique a été réalisée afin d'observer la corrélation entre l'effet clinique des corticoi͏̈des locaux et généraux et la cellularité des sécrétions nasales, en particulier la place occupée par le polynucléaire éosinophile au sein de ce compartiment.
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BERENGUER, PHILIPPE. "Etude d'une serie de 36 cas d'exerese endoscopique de polypes cancereux rectocoliques." Lyon 1, 1991. http://www.theses.fr/1991LYO1M329.

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Lugand, Ripoche Marie. "Incidence des polypes du côlon dans une population d'hospitalisés à l'hôpital de Vannes." Nantes, 1986. http://www.theses.fr/1986NANT3582.

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Fleury, Lionel. "Les polypes fibro-epitheliaux de la voie urinaire superieure : a propos de 2 cas." Nancy 1, 1990. http://www.theses.fr/1990NAN11190.

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POURCELOT, HERVE. "Les polypes fundiques glandulo-kystiques : a propos de huit cas et revue de la litterature." Besançon, 1994. http://www.theses.fr/1994BESA3041.

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Renaud-Monsarrat, Florence. "Vers une meilleure compréhension des tumeurs colorectales de la voie festonnée : intérêt des gènes de mucines." Thesis, Lille 2, 2015. http://www.theses.fr/2015LIL2S044/document.

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Les cancers colorectaux (CCR) constituent un véritable problème de santé publique. En France, en 2015, ils se situent au 3ème rang des cancers et au 2ème rang des décès par cancer, en raison d’un diagnostic souvent tardif et de réponses variables aux thérapeutiques. L’amélioration des tests de dépistage ces vingt dernières années n’a pas significativement réduit la morbi/mortalité liée au CCR et une meilleure caractérisation des différents sous-types moléculaires reste importante pour l’identification de nouveaux biomarqueurs. Les tumeurs colorectales sont hétérogènes tant sur le plan clinico-pathologique que moléculaire, issues de différentes voies de cancérogenèse. Les tumeurs de la voie festonnée représentent 20 à 30% des CCR. Elles sont caractérisées par une instabilité épigénétique (CpG Island Methylation Phenotype, CIMP), une instabilité microsatellitaire (MSI) et des mutations fréquentes du gène BRAF. Sur le plan phénotypique, ce sont des tumeurs volontiers mucisécrétantes surexprimant les mucines MUC2 et MUC5AC. L’identification précoce de leurs précurseurs reste actuellement un enjeu, d’autant que la séquence carcinogénétique des tumeurs festonnées serait particulièrement rapide.Dans cette étude, nous avons déterminé les caractéristiques clinico-pathologiques et moléculaires d’une série de cancers et polypes colorectaux et évalué l’intérêt des gènes de mucines MUC2 et MUC5AC pour classer les polypes festonnés et identifier les lésions précurseurs des cancers CIMP/MSI.L’étude a porté sur 418 CCR et 330 polypes coliques, incluant 218 polypes festonnés et 112 adénomes conventionnels, dont nous avons déterminé le profil moléculaire (mutations KRAS/BRAF, MSI, CIMP, méthylation MGMT, MLH1), ainsi que le profil d’expression et de méthylation des gènes de mucines MUC2 et MUC5AC. Les résultats ont été comparés aux données cliniques et anatomo-pathologiques.Nous montrons que l’hypométhylation du gène MUC5AC est un marqueur spécifique des CCR CIMP/MSI, indépendant des données clinico-pathologiques. De plus, nous montrons que l’hypométhylation de MUC5AC est un évènement précoce qui est spécifiquement associé aux polypes hyperplasiques de type microvésiculaire (MVHP) et adénomes festonnés sessiles (SSA), suggérant une filiation entre ces deux lésions, qui seraient les précurseurs des CCR CIMP/MSI. L’hypométhylation de MUC5AC était par ailleurs très spécifique des lésions festonnées mutées BRAF, CIMP ou MSI.En conclusion, nos résultats suggèrent un rôle de la mucine MUC5AC dans le développement des tumeurs coliques de la voie festonnée. L’hypométhylation du gène MUC5AC est un évènement précoce qui pourrait avoir un intérêt pour le diagnostic des polypes festonnés, en particulier lorsque la morphologie est ambiguë, et pour l’identification précoce des lésions à potentiel malin. De plus, nos résultats suggèrent que certains MVHP pourraient progresser en SSA et en CCR CIMP/MSI, d’où l’importance de réaliser des biopsies des polypes festonnés lors de l'endoscopie afin de repérer le sous-type microvésiculaire parmi les polypes hyperplasiques colorectaux, qui pourrait, bénéficier d’une surveillance minimale
Colorectal cancer (CRC) is a major public health problem yet it remains the third most common and the second deadliest cancer for both men and women in the United States and in Europe, owing to diagnosis at advanced stage and variable response to the treatments. However, the incidence and mortality appear to be steadily declining in countries with programmatic screening and it remains critical to characterize CRC molecular subtypes to identify new biomarkers. CRC display a wide clinicopathological and molecular heterogeneity and arise from different carcinogenesis pathway. Approximately 20% to 30% of CRC occur by the means of the serrated neoplasia pathway. CRC from the serrated pathway are associated with frequent epigenetic instability (CIMP, CpG island methylator phenotype) which causes most sporadic microsatellite instability (MSI) CRC through epigenetic inactivation of MLH1 and frequent BRAF mutation. CRC from the serrated pathway frequently display a mucinous pattern and are prone to express secreted mucins MUC2 and MUC5AC. Early identification of serrated pathway precursor lesions is currently challenging since the progression to adenocarcinoma in this pathway is particularly brief.We assessed in this study clinicopathological and molecular features of colorectal carcinomas and polyps and we analyzed the interest of mucin genes MUC2 and MUC5AC to classify serrated polyps and to identify the precursor lesions of CIMP/MSI carcinomas._x000D_A series of 418 CRC and 330 polyps was included in the study, with 218 serrated polyps and 112 conventional adenomas. We assessed the molecular profile (KRAS/BRAF mutations, MSI, CIMP, MGMT methylation, MLH1) and the expression and methylation profile of MUC2 and MUC5AC genes and further correlation with clinical and pathological data were performed.We show that MUC5AC hypomethylation is a specific marker of CIMP/MSI CRC, independently of other clinical or pathological factors. We show moreover than MUC5AC hypomethylation is an early event of carcinogenesis, specific to microvesicular hyperplastic polyps (MVHP) and sessile serrated adenoma (SSA) suggesting a filiation between these two lesions and also a progression of MVHP to SSA, SSA with dysplasia, and then to MSI/CIMP CRC. MUC5AC hypomethylation was moreover highly specific of BRAF mutated, CIMP or MSI serrated lesions.In conclusion, our results suggest that the MUC5AC mucin is involved/plays a role in the development/progression of colorectal tumors of the serrated pathway. MUC5AC hypomethylation occurs early during carcinogenesis and may be of interest for the diagnosis of serrated polyp especially in the presence of ambiguous morphology and to early detection of polyps carrying a malignant potential. Our results suggest moreover that some MVHP may progress to SSA and CIMP/MSI CRCs highlighting the importance to perform biopsy of serrated polyps during endoscopy to identify microvesicular subtype among colorectal hyperplastic polyps, which could require a minimal surveillance
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Hassid, Sergio. "Contribution de la microscopie assistée par ordinateur à l'identification d'entités anatomo-cliniques au sein des polypes nasaux." Doctoral thesis, Universite Libre de Bruxelles, 1996. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/212321.

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Bonte, François. "Immunohistologie comparée des polypes nasaux et de la muqueuse bronchique au cours de l' asthme : hyperréactivité bronchique : rôle du facteur d' agrégation plaquettaire." Clermont-Ferrand 1, 1987. http://www.theses.fr/1987CLF11041.

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L' auteur compare les résultats de la recherche de mastocytes porteurs d' igE au niveau de biopsies de muqueuse bronchique et de polypes nasaux chez 15 asthmatiques. Il étudie les corrélations possibles avec la clinique, le taux igE sériques et hyperréactivité bronchique de ces patients. Il rapporte les résultats de la recherche de PAF-acéther au niveau de ces mêmes biopsies.
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DUBROEUCQ, OLIVIER. "Les polypes gastriques au cours des gastrites atrophiques fundiques : a propos de 8 cas et revue de la litterature." Reims, 1991. http://www.theses.fr/1991REIMM095.

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Books on the topic "Polypes"

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Peter, Lance M., ed. Adenomatous polyps of the colon: Pathobiological and clinical features. New York: Springer-Verlag, 1990.

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Godovsky, Yu K., K. Horie, A. Kaneda, N. Kinjo, L. F. Kosyanchuk, Yu S. Lipatov, T. E. Lipatova, et al. Speciality Polymers/Polymer Physics. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/bfb0017962.

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Efremovich, Zaikov Gennadiĭ, Bouchachenko A. L, and Ivanov V. B, eds. Aging of polymers, polymer blends and polymer composites. New York: Nova Science Publishers, 2002.

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Rubinson, Judith F., and Harry B. Mark, eds. Conducting Polymers and Polymer Electrolytes. Washington, DC: American Chemical Society, 2002. http://dx.doi.org/10.1021/bk-2003-0832.

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Chiellini, Emo, Junzo Sunamoto, Claudio Migliaresi, Raphael M. Ottenbrite, and Daniel Cohn, eds. Biomedical Polymers and Polymer Therapeutics. Boston, MA: Springer US, 2002. http://dx.doi.org/10.1007/b112950.

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I, Kroschwitz Jacqueline, ed. Polymers: Polymer characterization and analysis. New York: Wiley, 1990.

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Emo, Chiellini, and International Symposium on Frontiers in Biomedical Polymers including Polymer Therapeutics: From Laboratory to Clinical Practice (3rd : 1999 : Shiga, Japan), eds. Biomedical polymers and polymer therapeutics. New York: Kluwer Academic/Plenum Publishers, 2001.

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Zhi, Rong Min, ed. Self-healing polymers and polymer composites. Hoboken, N.J: Wiley, 2011.

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Long, Timothy E., Brigitte Voit, and Oguz Okay, eds. Porous Carbons – Hyperbranched Polymers – Polymer Solvation. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-13617-2.

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Eklund, Peter C., and Apparao M. Rao, eds. Fullerene Polymers and Fullerene Polymer Composites. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-662-04269-4.

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Book chapters on the topic "Polypes"

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Romani, Alessia, Raffaella Suriano, Andrea Mantelli, Marinella Levi, Paolo Tralli, Jussi Laurila, and Petri Vuoristo. "Composite Finishing for Reuse." In Systemic Circular Economy Solutions for Fiber Reinforced Composites, 167–90. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-22352-5_9.

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AbstractCoating processes are emerging for new applications related to remanufactured products from End-of-Life materials. In this perspective, their employment can generate interesting scenarios for the design of products and solutions in circular economy frameworks, especially for composite materials. This chapter would give an overview of coating design and application for recycled glass fiber reinforced polymers on the base of the experimentation made within the FiberEUse project. New cosmetic and functional coatings were developed and tested on different polymer composite substrates filled with mechanically recycled End-of-Life glass fibers. Afterwards, recycled glass fiber reinforced polymer samples from water-solvable 3D printed molds were successfully coated. Finally, new industrial applications for the developed coatings and general guidelines for the coating of recycled glass fiber reinforced polymers were proposed by using the FiberEUse Demo Cases as a theoretical proof-of-concept.
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Xanthos, Marino. "Polymers and Polymer Composites." In Functional Fillers for Plastics, 1–16. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527605096.ch1.

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Xanthos, Marino. "Polymers and Polymer Composites." In Functional Fillers for Plastics, 1–18. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2010. http://dx.doi.org/10.1002/9783527629848.ch1.

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Cakmak, Hulya, and Ece Sogut. "Functional Biobased Composite Polymers for Food Packaging Applications." In Reactive and Functional Polymers Volume One, 95–136. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-43403-8_6.

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AbstractBiobased polymers are of great interest due to the release of tension on non-renewable petroleum-based polymers for environmental concerns. However, biobased polymers usually have poor mechanical and barrier properties when used as the main component of coatings and films, but they can be improved by adding nanoscale reinforcing agents (nanoparticles - NPs or fillers), thus forming nanocomposites. The nano-sized components have a larger surface area that favors the filler-matrix interactions and the resulting material yield. For example, natural fibers from renewable plants could be used to improve the mechanical strength of the biobased composites. In addition to the mechanical properties, the optical, thermal and barrier properties are mainly effective on the selection of type or the ratio of biobased components. Biobased nanocomposites are one of the best alternatives to conventional polymer composites due to their low density, transparency, better surface properties and biodegradability, even with low filler contents. In addition, these biomaterials are also incorporated into composite films as nano-sized bio-fillers for the reinforcement or as carriers of some bioactive compounds. Therefore, nanostructures may provide antimicrobial properties, oxygen scavenging ability, enzyme immobilization or act as a temperature or oxygen sensor. The promising result of biobased functional polymer nanocomposites is shelf life extension of foods, and continuous improvements will face the future challenges. This chapter will focus on biobased materials used in nanocomposite polymers with their functional properties for food packaging applications.
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Bhatia, Saurabh. "Natural Polymers vs Synthetic Polymer." In Natural Polymer Drug Delivery Systems, 95–118. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-41129-3_3.

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Parisi, Ortensia Ilaria, Manuela Curcio, and Francesco Puoci. "Polymer Chemistry and Synthetic Polymers." In Advanced Polymers in Medicine, 1–31. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-12478-0_1.

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Brandrup, Johannes, and Wiesbaden. "Polymers, Polymer Recycling, and Sustainability." In Plastics and the Environment, 521–62. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2004. http://dx.doi.org/10.1002/0471721557.ch13.

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Hagnauer, Gary L. "Polymers and Polymer Precursor Characterization." In Materials Characterization for Systems Performance and Reliability, 189–243. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4613-2119-4_9.

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Saldívar-Guerra, Enrique, and Eduardo Vivaldo-Lima. "Introduction to Polymers and Polymer Types." In Handbook of Polymer Synthesis, Characterization, and Processing, 1–14. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118480793.ch1.

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Hamdaoui, Naima, and Léon Boubli. "Polypes." In La Ménopause en Pratique, 61–62. Elsevier, 2019. http://dx.doi.org/10.1016/b978-2-294-74372-6.00010-2.

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Conference papers on the topic "Polypes"

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Ben Mohamed, A., M. Medhioub, A. Khsiba, M. Mahmoudi, L. Hamzaoui, and MM Azouz. "Les polypes minuscules et les petits polypes sont-ils dangereux?" In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1680907.

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Tannoury, J., C. Cremone, C. Charpy, C. Gagnière, AL Rentien, F. Mesli, Y. Le Baleur, A. Amiot, and I. Sobhani. "Risque carcinologique des polypes festonnés." In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2018. http://dx.doi.org/10.1055/s-0038-1623343.

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Ben Mohamed, A., M. Mahmoudi, L. Hamzaoui, M. Medhioub, A. Khsiba, and MM Azouz. "Polypes coliques: Quelle prévalence? Quels facteurs associés?" In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1680909.

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Yakoubi, M., M. Medhioub, O. Gharbi, L. Hamzaoui, A. Khsiba, M. Mahmoudi, and MM Azouz. "Polypes gastriques hyperplasiques: à propos de 63 cas." In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1680933.

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Cherif, D., S. Bizid, MK Temani, B. Ben Slimane, M. Ghanem, H. Ben Abdallah, MR Bouali, and N. Abdelli. "Les polypes gastriques: particularités cliniques, endoscopiques et histologiques." In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1680985.

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Aissaoui, F., M. Zakhama, S. Ben Amor, I. Jemni, A. Guediche, W. Bouhlel, W. Ben Mansour, HL Mohamed, BC Nabil, and L. Safer. "Technique optimale de la résection endoscopique des polypes diminutifs." In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1680965.

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Leandri, C., B. Brieau, B. Bordacahar, S. Ribière, MA Guillaumot, S. Leblanc, F. Prat, and S. Chaussade. "Résection endoscopique par mucosectomie à l'anse froide de polypes coliques." In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1680975.

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Jlassi, H., D. Trad, N. Bibani, M. Sabbah, A. Ouakaa Kchaou, H. Elloumi, and D. Gargouri. "Résection endoscopique des petits polypes rectocoliques: Quelle est la technique optimale?" In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1680940.

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Aissaoui, F., M. Zakhama, I. Jemni, S. Ben Amor, A. Guediche, W. Bouhlel, W. Ben Mansour, HL Mohamed, BC Nabil, and L. Safer. "La prévalence des adénomes avancés selon la taille des polypes colorectaux." In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1680964.

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Jlassi, H., D. Trad, M. Sabbah, N. Bibani, A. Ouakaa Kchaou, H. Elloumi, and D. Gargouri. "Les polypes minuscules recto-coliques: Faut-il une analyse histologique systématique?" In Journées Francophones d'Hépato-Gastroentérologie et d'Oncologie Digestive (JFHOD). Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1680971.

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Reports on the topic "Polypes"

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Stavland, Arne, Siv Marie Åsen, Arild Lohne, Olav Aursjø, and Aksel Hiorth. Recommended polymer workflow: Lab (cm and m scale). University of Stavanger, November 2021. http://dx.doi.org/10.31265/usps.201.

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Polymer flooding is one of the most promising EOR methods (Smalley et al. 2018). It is well known and has been used successfully (Pye 1964; Standnes & Skjevrak 2014; Sheng et al. 2015). From a technical perspective we recommend that polymer flooding should be considered as a viable EOR method on the Norwegian Continental Shelf for the following reasons: 1. More oil can be produced with less water injected; this is particularly important for the NCS which are currently producing more water than oil 2. Polymers will increase the aerial sweep and improve the ultimate recovery, provided a proper injection strategy 3. Many polymer systems are available, and it should be possible to tailor their chemical composition to a wide range of reservoir conditions (temperature and salinity) 4. Polymer systems can be used to block water from short circuiting injection production wells 5. Polymer combined with low salinity injection water has many benefits: a lower polymer concentration can be used to reach target viscosity, less mechanical degradation, less adsorption, and a potential reduction in Sor due to a low salinity wettability effect. There are some hurdles when considering polymer flooding that needs to be considered: 1. Many polymer systems are not at the present considered as green chemicals; thus, reinjection of produced water is needed. However, results from polymer degradation studies in the IORCentre indicates that a. High molecular weight polymers are quickly degraded to low molecular weight. In case of accidental release to the ocean low molecular weight polymers are diluted and the lifetime of the spill might be quite short. According to Caulfield et al. (2002) HPAM is not toxic, and will not degrade to the more environmentally problematic acrylamide. b. In the DF report for environmental impact there are case studies using the DREAM model to predict the transport of chemical spills. This model is coupled with polymer (sun exposure) degradation data from the IORCentre to quantify the lifetime of polymer spills. This approach should be used for specific field cases to quantify the environmental risk factor. 2. Care must be taken to prepare the polymer solution offshore. Chokes and vales might be a challenge but can be mitigating according to the results from the large-scale testing done in the IORCentre (Stavland et al. 2021). None of the above-mentioned challenges are server enough to not consider polymer flooding. HPAM is neither toxic, nor bio-accumulable, or bio-persistent and the CO2 footprint from a polymer flood may be significantly less than a water flood (Dupuis et al. 2021). There are at least two contributing factors to this statement, which we will return in detail to in the next section i) during linear displacement polymer injection will produce more oil for the same amount of water injected, hence the lifetime of the field can be shortened ii) polymers increase the arial sweep reducing the need for wells.
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Lohne, Arild, Arne Stavland, Siv Marie Åsen, Olav Aursjø, and Aksel Hiorth. Recommended polymer workflow: Interpretation and parameter identification. University of Stavanger, November 2021. http://dx.doi.org/10.31265/usps.202.

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Injecting a polymer solution into a porous medium significantly increases the modeling complexity, compared to model a polymer bulk solution. Even if the polymer solution is injected at a constant rate into the porous medium, the polymers experience different flow regimes in each pore and pore throat. The main challenge is to assign a macroscopic porous media “viscosity” to the fluid which can be used in Darcy law to get the correct relationship between the injection rate and pressure drop. One can achieve this by simply tabulating experimental results (e.g., injection rate vs pressure drop). The challenge with the tabulated approach is that it requires a huge experimental database to tabulate all kind of possible situations that might occur in a reservoir (e.g., changing temperature, salinity, flooding history, permeability, porosity, wettability etc.). The approach presented in this report is to model the mechanisms and describe them in terms of mathematical models. The mathematical model contains a limited number of parameters that needs to be determined experimentally. Once these parameters are determined, there is in principle no need to perform additional experiments.
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Lambeth, Robert H., Randy A. Mrozek, Joseph L. Lenhart, Yelena R. Sliozberg, and Jan W. Andzelm. Branched Polymers for Enhancing Polymer Gel Strength and Toughness. Fort Belvoir, VA: Defense Technical Information Center, February 2013. http://dx.doi.org/10.21236/ada577092.

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Moghtadernejad, Sara, Ehsan Barjasteh, Ren Nagata, and Haia Malabeh. Enhancement of Asphalt Performance by Graphene-Based Bitumen Nanocomposites. Mineta Transportation Institute, June 2021. http://dx.doi.org/10.31979/mti.2021.1918.

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As the State of California continues to grow, demand for enhanced infrastructure such as roadways and highways escalates. In view of the current average highway lifespan of 15–20 years, the improvement of asphalt binders leads to material sustainability by decreasing required maintenance and increasing the lifespan of roadways. In the present investigation, enhancement of asphalt binder properties was achieved by different methods of mixing varying compositions of graphene nanoparticles with an SBS polymer and asphalt binder. Additionally, experimental evaluation and comparison of the rheological and mechanical properties of each specimen is presented. Graphene nanoparticles have attracted great curiosity in the field of highway materials due to their incredible rigidity, even in small quantities. Addition of as little as 1.0%nanoparticles in combination with polymers in an asphalt binder is expected to increase the rigidity of the material while also maintaining the beneficial polymer characteristics. Evaluation of the effect of the mixing design established that the methods for application of graphene to the polymer-modified asphalt binder are critical in the improvement of a roadway, resulting in resistance to premature aging and strain from constant road operation.
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Horning, Robert. PolyMEMS Actuator: A Polymer-Based Microelectromechanical (MEMS) Actuator with Macroscopic Action. Fort Belvoir, VA: Defense Technical Information Center, September 2002. http://dx.doi.org/10.21236/ada408325.

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Lv, Yongcai, Yanhua Yao, Jingjing Lei, and Tao Tang. The role of cold forceps technique in diminutive colorectal polyps: a systematic review and meta-analysis of randomized clinical trials. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, November 2022. http://dx.doi.org/10.37766/inplasy2022.11.0135.

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Review question / Objective: The European Society of Gastrointestinal Endoscopy and the United States Multi-Society Task Force recommends the use of old snare polypectomy （CSP) for < 10 mm polyps. However, recent randomized clinical trials (RCTs) showed some conflicting results in cold forceps technique including cold forceps polypectomy (CFP) and jumbo forceps polypectomy (JFP) compared with CSP in diminutive colorectal polyps (DCPs) (≤5mm), especially in 1-3mm polyps. Condition being studied: Current studies have some conflicting results in the cold forceps technique vs cold snare technique for diminutive colorectal polyps (≤5mm). This is the first systematic review and meta-analysis comparing the cold forceps technique with the cold snare technique in 1-5mm polyps. We evaluated these two techniques in terms of complete resection rate, mean polypectomy time, rate of retrieved polyps, and complication.
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Alexandratos, S. D. Polymer-based separations: Synthesis and application of polymers for ionic and molecular recognition. Office of Scientific and Technical Information (OSTI), January 1992. http://dx.doi.org/10.2172/7017486.

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Alexandratos, S. Polymer-based separations: Synthesis and application of polymers for ionic and molecular recognition. Office of Scientific and Technical Information (OSTI), April 1990. http://dx.doi.org/10.2172/6975900.

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Yuwen, Jing. Polymer-Based Photoactive Surface for the Efficient Immobilization of Nanoparticles, Polymers, Graphene and Carbohydrates. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.413.

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Sanchez, Issac C., and Donald R. Paul. Polymer-Polymer Interactions. Fort Belvoir, VA: Defense Technical Information Center, January 1994. http://dx.doi.org/10.21236/ada282944.

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