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Journal articles on the topic 'Ciment – Analyse'

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Published: 4 April 2023

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1

Serifou, Mamery Adama, Obre Sery Paul Jolissaint, Bleh Raoul Kouassi, and Emeruwa Edjikémé. "Analyse physico-mécanique d’un composite paille de riz/ciment." Matériaux & Techniques 108, no. 2 (2020): 208. http://dx.doi.org/10.1051/mattech/2020024.

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En raison des nombreux avantages qu’offrent les fibres végétales, elles sont de plus en plus utilisées pour la production de matériaux composites notamment dans le domaine de la construction. Le riz est la céréale la plus consommée dans le monde pour l’alimentation humaine. Sa production engendre des quantités importantes de paille qui sont peu ou pas valorisées d’où le besoin d’en faire un renfort dans les matériaux cimentaires. À travers cette étude, des composites de pailles de riz (PDR) / ciment ont été élaborés avec différentes teneurs en paille. Des essais mécaniques et physiques ont été réalisés à différents âges pour en évaluer les performances. Il en ressort que l’incorporation de 1 à 5 % de PDR induit une réduction des propriétés physiques et mécaniques des composites et provoquent un retard de prise du ciment. Cela a pour cause la grande absorption d’eau des pailles et leur faible adhésion avec la matrice cimentaire. Par ailleurs on assiste à l’allègement des composites grâce à l’introduction d’air occlus. Cette étude constitue la première étape de toute une série. Elle a permis de comprendre le comportement des PDR vis-à-vis du ciment. Les perspectives visent l’optimisation des propriétés mécaniques et physiques du matériau à travers l’incorporation de granulats.
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2

Philippot, Rémi, Jean-François Meucci, Bertrand Boyer, Rivo Radekandretsa, and Frédéric Farizon. "Analyse à 12ans d’une cupule double mobilité sans ciment." Revue de Chirurgie Orthopédique et Traumatologique 98, no. 7 (November 2012): S284. http://dx.doi.org/10.1016/j.rcot.2012.08.026.

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3

Isambourg, P., and P. Essel. "Diagraphies de cimentation : vers une analyse de la qualité du contact ciment-formation." Revue de l'Institut Français du Pétrole 49, no. 3 (May 1994): 225–34. http://dx.doi.org/10.2516/ogst:1994013.

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4

Bouasker, Marwen, Pierre Mounanga, Abdelhafid Khelidj, and Roger Coué. "Déformations endogènes de pâtes de ciment au très jeune âge. Analyse critique et développement métrologique." Revue européenne de génie civil 12, no. 4 (May 16, 2008): 347–65. http://dx.doi.org/10.3166/ejece.12.347-365.

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5

Gruet, Yves, Jean Vovelle, and Michèle Grasset. "Composante biominérale du ciment du tube chez Sabellaria alveolata (L.), Annélide Polychète." Canadian Journal of Zoology 65, no. 4 (April 1, 1987): 837–42. http://dx.doi.org/10.1139/z87-133.

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Different methods of microanalysis (energy of wavelength dispersive X-ray spectrometry microprobes, ion microanalyser) combined with histochemistry, allowed us to analyse the cement of the tube and the main glands connected to the building organ of Sabellaria alveolata (L.). These methods clearly showed a mineral component of which the main elements are phosphorus, probably linked to the organic component, calcium, and magnesium, with some manganese and iron. The biomineral is produced by glandular cells having "heterogeneous spherulae." The quick hardening of this cement probably takes place independent of and before the quinonic tanning of the inner organic lining of the wall of the tube.
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6

Dequiedt, A. S., E. Vigneron, L. Chermant, and M. Coster. "Etude de l’hydratation d’une pâte de ciment par analyse automatique d’images en microscopie électronique à balayage." Revue de Métallurgie 97, no. 2 (February 2000): 179–86. http://dx.doi.org/10.1051/metal/200097020179.

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7

Guéret, Samuel, Gwenaël Diélie, Frédérique Bastin, Tiriana Segato, Michel Verbanck, and Pierre D’Ans. "Influence de la substitution d’argile par des déchets sédimentaires dans des briques en terre crue comprimée (BTCC) sur la résistance à l’abrasion." Matériaux & Techniques 107, no. 3 (2019): 302. http://dx.doi.org/10.1051/mattech/2019018.

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Grands émetteurs de gaz à effet de serre à la production, les matériaux de construction issus des filières thermiques peuvent être, dans certains cas, substitués par des « éco-matériaux ». L’économie circulaire pousse de plus en plus à intégrer des déchets dans les chaînes de production. Ce travail analyse la possibilité d’intégration de déchets urbains tel que des résidus fins de boues sédimentaires de dragage (BSD) pour partiellement remplacer la terre crue dans la production de briques en terre crue comprimée (BTCC). Les BSD ont été caractérisées par diffraction des rayons X, fluorescence X et analyse thermique. La présence de métaux lourds et composés organiques polluants a été quantifiée. Des pastilles de différentes teneurs en eau et compositions (mixte BSD et terres crues) ont été réalisées. Leur tenue à l’abrasion a été étudiée sur l’essai standardisé du pion-disque. Les pastilles contenant de la BSD dont les organiques ont été éliminés thermiquement, ont une faible tenue à l’abrasion. Cette performance est améliorée par l’ajout de 5 % de ciment, qui permet d’augmenter la cohésion du matériau.
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8

Kardali, Chafiq, Philippe Greiner, Alessandro Petteruti, and Patrick Simon. "Étude prospective comparative d’une tige sans ciment orthopédique ou traumatologique dans les fractures du col fémoral après 80ans – Analyse des Résultats et des complications." Revue de Chirurgie Orthopédique et Traumatologique 100, no. 7 (November 2014): S244. http://dx.doi.org/10.1016/j.rcot.2014.09.083.

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9

d’Astorg, H., J. Amzallag, A. Poignard, F. Roudot Thoraval, and J. Allain. "Fréquence de survenue et conséquences des fuites péri-acétabulaires de ciment lors des arthroplasties totales de hanche. Analyse rétrospective d’une série de 269 prothèses totales scellées." Revue de Chirurgie Orthopédique et Traumatologique 97, no. 6 (October 2011): 593–99. http://dx.doi.org/10.1016/j.rcot.2011.07.007.

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10

Jacquemaire, B. "Analyse des résultats du traitement chirurgical non prothétique de la coxarthrose et comparaison avec une série de coxarthroses traitées par prothèses totales de hanche sans ciment." Orthopedie Traumatologie 1, no. 3 (September 1991): 201–5. http://dx.doi.org/10.1007/bf01791552.

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11

Erivan, Roger, Guillaume Villatte, Thibaut Lecointe, Aurélien Mulliez, Stéphane Descamps, and Stéphane Boisgard. "Survie à long terme de l’arthroplastie totale de hanche hybride à cupule CLS sans ciment et pivot cimenté en chrome-cobalt de Müller utilisant un couple Metasul™ en calibre 28 mm : analyse rétrospective de 115 hanches au recul minimal de 17,8 ans." Revue de Chirurgie Orthopédique et Traumatologique 105, no. 7 (November 2019): 845–51. http://dx.doi.org/10.1016/j.rcot.2019.09.003.

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12

Rollier, Jean-Charles, Laurent Jacquot, Jean-Christophe Chatelet, Tarik-Ait Si Selmi, Michel Bonnin, Michel-Henry Fessy, and Bernard Masson. "Prothèses totales de hanche sans ciment avec couple de frottement céramique céramique (BIOLOXy delta). À propos d’une série rétrospective multicentrique de 469 patients avec plus de 4ans de recul. Résultats, complications, et analyse du squeaking." Revue de Chirurgie Orthopédique et Traumatologique 102, no. 7 (November 2016): S91. http://dx.doi.org/10.1016/j.rcot.2016.08.042.

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13

Akisue, Eduardo, Giulio Gavini, Marco Antonio Gioso, Jonathan Ferreira, and Suzana C. Orsini Machado De Sousa. "Avaliação da resposta inflamatória periapical em dentes de cães obturados com diferentes cimentos resinosos e técnicas obturadoras." Revista de Odontologia da Universidade Cidade de São Paulo 21, no. 3 (December 14, 2017): 224. http://dx.doi.org/10.26843/ro_unicid.v21i3.460.

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Introdução: Este estudo avalia as respostas inflamatórias periapicais resultantes da infiltração coronária em dentes de cães obturados com diferentes cimentos resinosos (AH Plus®, RealSeal® e RealSeal SE®) e técnicas obturadoras (condensação lateral e termoplástica). Método: Para tanto, pré-molares de 5 cães tiveram o tratamento endodôntico realizado e foram obturados de acordo com os grupos experimentais: GI- AHPlus/ condensação lateral, GII-AHPlus/termoplástificação, GIII-RealSeal/condensação lateral, GIV-RealSeal/ termoplástificação, GV-RealSeal SE/condensação lateral, GVI-RealSeal SE/ termoplástificação, Grupocontrole positivo e Grupo-controle negativo. As cavidades coronárias ficaram então expostas ao meio bucal por um período de 75 dias e, passado esse período experimental, os cães foram eutanasiados, e se realizou a remoção cirúrgica dos dentes e periápices, a fixação e a desmineralização. Posteriormente, realizou-se a rotina histológica, digitalização e analise em relação à existência de patologia periapical com auxílio do teste de Kruskal-Wallis. Resultados: Observou-se que, em relação às técnicas, a termoplastificação por ondas contínuas de condensação associada à técnica de injeção mostrou melhores condições periapicais quando comparada à técnica de condensação lateral (p=0.0055), sendo que a utilização dessa técnica resultou em reações inflamatórias mais intensas para o cimento RealSeal SE (p=0.002). Em relação aos cimentos avaliados, o RealSeal SE mostrou-se menos eficaz em evitar a percolação, produzindo maiores níveis de inflamação crônica independentemente do sistema de obturação (p=0.0088). Conclusão: o sistema termoplástico proporcionou melhores respostas inflamatórias e o cimento RealSeal comportou-se igualmente ao cimento AH Plus.
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14

Elkhadiri, Imad, Abdeljebbar Diouri, and Ali Boukhari. "Etude de la réactivité hydraulique d'un ciment composite par des analyses thermiques." Annales de Chimie Science des Matériaux 31, no. 4 (July 31, 2006): 369–79. http://dx.doi.org/10.3166/acsm.369-379.

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15

PINHEIRO, Sérgio Luiz, Giuliana Rodrigues AZENHA, Silvia PROVASI, Ana Paula Teixeira BOSCARIOLI, and Karina Teixera VILLALPANDO. "Utilização da fonte de luz como energia catalisadora da presa química inicial dos cimentos ionoméricos convencionais." Revista de Ciências Médicas 25, no. 1 (December 19, 2016): 41. http://dx.doi.org/10.24220/2318-0897v25n1a3380.

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ObjetivoAvaliar se o fotopolimerizador de uso odontológico (luz emissora de diodo) aplicado por 20 segundos sobre o cimento de ionômero de vidro convencional pode acelerar a presa química deste material. MétodosOs cimentos ionoméricos utilizados foram o Vidrion R (SS White, Rio de Janeiro) e o Ketac Molar (3M, Espe, Alemanha). Foram confeccionados quarenta corpos de prova divididos em quatro grupos (n=10): G1: Vidrion R sem fonte de luz; G2: Vidrion R ativadas por luz durante 20 segundos; G3: Ketac Molar sem fonte de luz; G4: amostras de Ketac Molar ativadas por luz durante 20 segundos. A espatulação do ionômero foi em quarenta segundos desde o início do processo até a perda do brilho. A fonte de luz foi o aparelho Optilight Max (Gnatus, São Paulo) com potência de luz de 1200mW/cm² e comprimento de onda de 450nm. Os resultados foram analisados no Programa Biostat (Analyst Soft, Walnut, Califórnia, Estados Unidos) versão 4.0, realizada a análise descritiva e o teste de Kruskal Wallis (Student-Newman-Keuls).ResultadosA utilizaçãoda luz nos cimentos ionoméricos convencionais Vidrion R e Ketac Molar acarretou redução significativa no tempo gasto para a presa química destes materiais (p<0.01). Não houve diferença entre o tempo gasto para presa química com ou sem a utilização da fonte de luz, quando comparados os cimentos ionoméricos Vidrion e Ketac (p>0.05). ConclusãoAutilização da fonte de luz emissora de diodo está indicada para acelerar a presa química inicial dos cimentos ionoméricos convencionais reduzindo o tempo operatório e favorecendo o tratamento em odontopediatria.
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16

Hashim, Z. N., W. F. Campbell, and J. G. Carman. "Morphological analyses of spring wheat (CIMMYT cv. PCYT-10) somaclones." Plant Cell, Tissue and Organ Culture 20, no. 2 (February 1990): 95–99. http://dx.doi.org/10.1007/bf00114706.

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17

Marmorat, J. L., J. B. Leymarie, P. Piriou, M. Norton, and T. Judet. "Reprise fémorale par tige cimentée et greffe morcelée compactée: analyse de la migration fémorale." Revue de Chirurgie Orthopédique et Réparatrice de l'Appareil Moteur 92, no. 2 (April 2006): 125–32. http://dx.doi.org/10.1016/s0035-1040(06)75697-5.

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18

Sousa, Felype Rayan da Silva, Paulo Victor Silva Avelino de Castro, Lucas Carvalho Quintanilha, Adão Lincon Bezerra Montel, and Raydel Lorenzo Reinaldo. "ESTUDO DA VIDA ÚTIL DE ESTRUTURAS DE CONCRETO ARMADO UTILIZANDO MODELO DE DIFUSÃO DIANTE A AÇÃO DE ÍONS CLORETO." DESAFIOS - Revista Interdisciplinar da Universidade Federal do Tocantins 5, Especial (October 31, 2018): 161–68. http://dx.doi.org/10.20873/uft.2359-3652.2018v5nespecialp161.

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Estruturas de concreto armado estão sujeitas a inúmeras manifestações patológicas, sendo a corrosão iniciada pela difusão de íons cloreto uma das mais agressivas e onerosas. Por isso mesmo, diversos estudos têm sido conduzidos para determinar a vida útil dessas estruturas, mas ainda não há pleno consenso. Nesse sentido, este trabalho objetiva estabelecer um padrão de ensaio para determinar a vida útil de estruturas de concreto armado devido a ação dos íons cloreto, além de analisar a variação do coeficiente de difusão ao se utilizar distintas relações água/cimento. Para alcançar tais objetivos, foram adotadas normativas nacionais e internacionais para orientar as etapas de caracterização dos materiais, além da utilização de equações de modelagens de perfis de penetração de cloretos para determinar o coeficiente de difusão e, por consequência, a vida útil da estrutura. Por fim, pôde-se concluir que ao se diminuir a relação água/cimento, houve diminuição da concentração de cloretos em uma determinada camada, proporcionando assim maior vida útil para o concreto armado. Quanto à analise probabilística, foi possível notar que quanto menor a proporção de água e cimento maior o índice de confiabilidade, uma vez que a probabilidade de falhar também reduz. Palavras-chave: Corrosão, Difusão de Cloreto, Vita Útil.
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19

Zhang, Yong, Zhonghu He, Aimin Zhang, Maarten van Ginkel, Roberto J. Peña, and Guoyou Ye. "Pattern analysis on protein properties of Chinese and CIMMYT spring wheat cultivars sown in China and CIMMYT." Australian Journal of Agricultural Research 57, no. 7 (2006): 811. http://dx.doi.org/10.1071/ar05372.

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Improvement of processing quality is a very important objective for Chinese wheat breeding programs. Twenty-five CIMMYT and Chinese spring wheat cultivars were grown at four managed conditions by CIMMYT in Cd. Obregon, Sonora, Mexico and in nine environments in China, over two successive wheat seasons from 2000 to 2002. These trials were used to identify patterns of cultivar, environment and cultivar × environment interactions, and to determine opportunities for indirect selection for protein content and the protein-quality related parameter, SDS sedimentation (SDSS) value. The cultivar Inqalab 91 showed low levels of interaction with environments in the 2000–01 crop cycle for protein content, and expressed intermediate levels for both protein content and SDSS value, across most of the environments in both years. Longmai 26 had consistently high protein content and SDSS value across environments in both years, indicating that it is possible to breed cultivars expressing high yields with good protein properties. Cluster analyses revealed that cultivars grouped differently for protein content and SDSS value. Besides photoperiod, water availability appeared to influence the ranking of cultivars for protein content and SDSS value. Temperature and soil type may underlie the observed interactions for protein content, while temperature may also be a factor associated with interactions for SDSS value. The full irrigation managed environment in Mexico, with the cultivars sown on raised beds two months later than optimum and exposing them to late heat, clustered together with the Chinese environments Huhhot, Yongning, and Hejin in the 2000–01 season for SDSS value. This indicates that there is an opportunity to exploit indirect responses to selection in the CIMMYT management environments for SDSS value with relevance for China’s spring wheat regions. However, there seemed little chance for positive indirect selection in CIMMYT’s managed environments for China in regard to protein content, as environments clustered distinctly. Pattern analyses permitted a sensible and useful summary for this multi environment experiment, helping in understanding natural relationships and variations in cultivar performance among the various environment groups, and assisting in the structuring of environments.
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20

Ma, Jinhui, Yan Yan, Weiguo Wang, Bailiang Wang, Debo Yue, and Wanshou Guo. "Taux de révision précoce plus faible après une arthroplastie du genou unicompartimentale d’Oxford non cimentée versus la version cimentée de la prothèse unicompartimentale d’Oxford : méta-analyse." Revue de Chirurgie Orthopédique et Traumatologique 107, no. 3 (May 2021): 307. http://dx.doi.org/10.1016/j.rcot.2021.01.003.

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21

Dreisigacker, S., P. Zhang, M. L. Warburton, M. Van Ginkel, D. Hoisington, M. Bohn, and A. E. Melchinger. "SSR and Pedigree Analyses of Genetic Diversity among CIMMYT Wheat Lines Targeted to Different Megaenvironments." Crop Science 44, no. 2 (2004): 381. http://dx.doi.org/10.2135/cropsci2004.0381.

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22

Dreisigacker, S., P. Zhang, M. L. Warburton, M. Van Ginkel, D. Hoisington, M. Bohn, and A. E. Melchinger. "SSR and Pedigree Analyses of Genetic Diversity among CIMMYT Wheat Lines Targeted to Different Megaenvironments." Crop Science 44, no. 2 (March 2004): 381–88. http://dx.doi.org/10.2135/cropsci2004.3810.

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23

Gonçalves, Maria Elizabeth Souza, and Luciano Sergio Ventin Bomfim. "Pensamento/ação freiriano: pistas para uma epistemologia descolonial que cimente uma Ecologia Humana contra-hegemônica." Praxis Educativa 16 (2021): 1–15. http://dx.doi.org/10.5212/praxeduc.v.16.16594.021.

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This study aimed to analyze the contributions of the Freirean thinking/action in the construction of a decolonial epistemology that orients a Latin-American Human Ecology of counter-hegemonic inclination. Through a literature review of the Freirean production and the Latin-American intellectuals of the Human Ecology, it was done the interlocution of knowledge and perspectives, resulting to announce Paulo Freire as a classic in the genealogy of decolonial thinking and in the reinforcing of a Human Ecology engaged with social, cognitive and environmental justice, signaling emancipatory processes coming from different fronts of struggle, in such a special historical time of rise of oppressions articulated by capitalism with patriarchy and colonialism.
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24

Qu, Jingtao, Alberto A. Chassaigne-Ricciulli, Fengling Fu, Haoqiang Yu, Kate Dreher, Sudha K. Nair, Manje Gowda, et al. "Low-Density Reference Fingerprinting SNP Dataset of CIMMYT Maize Lines for Quality Control and Genetic Diversity Analyses." Plants 11, no. 22 (November 14, 2022): 3092. http://dx.doi.org/10.3390/plants11223092.

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CIMMYT maize lines (CMLs), which represent the tropical maize germplasm, are freely available worldwide. All currently released 615 CMLs and fourteen temperate maize inbred lines were genotyped with 180 kompetitive allele-specific PCR single nucleotide polymorphisms to develop a reference fingerprinting SNP dataset that can be used to perform quality control (QC) and genetic diversity analyses. The QC analysis identified 25 CMLs with purity, identity, or mislabeling issues. Further field observation, purification, and re-genotyping of these CMLs are required. The reference fingerprinting SNP dataset was developed for all of the currently released CMLs with 152 high-quality SNPs. The results of principal component analysis and average genetic distances between subgroups showed a clear genetic divergence between temperate and tropical maize, whereas the three tropical subgroups partially overlapped with one another. More than 99% of the pairs of CMLs had genetic distances greater than 0.30, showing their high genetic diversity, and most CMLs are distantly related. The heterotic patterns, estimated with the molecular markers, are consistent with those estimated using pedigree information in two major maize breeding programs at CIMMYT. These research findings are helpful for ensuring the regeneration and distribution of the true CMLs, via QC analysis, and for facilitating the effective utilization of the CMLs, globally.
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Mendes, Allana Ribeiro, Romel Dias Vanderlei, and Matheus Augusto Basso. "Análise do processo de dispersão da nanocelulose cristalina para a produção de compósitos cimentícios." Ambiente Construído 23, no. 1 (January 2023): 183–96. http://dx.doi.org/10.1590/s1678-86212023000100657.

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Resumo Este artigo tem por objetivo apresentar uma investigação do processo de dispersão de suspensões aquosas com nanocelulose cristalina (NCC) para fabricação de compósitos cimentícios reforçados com microcelulose cristalina (MCC) e fibras de polipropileno (FPP). Inicialmente foram caracterizadas as soluções aquosas com nanocelulose com diferentes teores de surfactante (Pluronic F-127) quanto à qualidade da dispersão, por meio do espalhamento dinâmico de luz, potencial zeta e espectroscopia UV-Vis, para determinar o teor ideal de surfactante. Em seguida, as suspensões aquosas foram adicionadas à mistura cimento-areia para preparação dos compósitos. As propriedades no estado fresco e endurecido foram investigadas em cada um dos teores de adição combinados. O teor ótimo de Pluronic para dispersar a nanocelulose foi de 40% em relação à massa dela. Verificou-se redução da trabalhabilidade nas amostras. Os compósitos do traço 1 (0,3% FPP, 0,5% MCC e 0,3% NCC), quanto ao desempenho mecânico, apresentaram incrementos em torno de 17% de resistência à compressão aos 56 dias e de 18% no módulo de elasticidade, e de aproximadamente 7% na resistência à tração na flexão aos 28 dias.
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Lebeau, N., M. Bayle, R. Belhaouane, M. Chelli, E. Havet, B. Brunschweiler, and P. Mertl. "Reprises de PTH par implant acétabulaire double mobilité cimenté dans une armature métallique : analyse d’une série de 62 cas à 5 ans de recul minimal." Revue de Chirurgie Orthopédique et Traumatologique 103, no. 5 (September 2017): 477–83. http://dx.doi.org/10.1016/j.rcot.2017.05.026.

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27

Locat, Jacques, Gérard Ballivy, and Guy Lefebvre. "Notes sur la minéralogie des sédiments fins du lac Ojibway, en particulier ceux de la région de Matagami, Québec." Géographie physique et Quaternaire 38, no. 1 (November 29, 2007): 49–57. http://dx.doi.org/10.7202/032535ar.

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RÉSUMÉ La minéralogie des sédiments fins glacio-lacustres du lac Ojibway est revue et commentée à partir d'un certain nombre d'analyses récentes. On constate que la minéralogie de la fraction argileuse est dominée par les minéraux felsiques tels que le feldspath et le quartz. L'illite et la chlorite prédominent parmi les phyllosilicates qui comprennent aussi des minéraux interstratifiés et des traces de vermiculite. La prédominance des minéraux felsiques dans la fraction argileuse traduit le caractère détritique de ces sédiments d'origine glaciaire. En outre, des données tirées des analyses chimiques totales et des amorphes sont aussi compilées. Deux minéraux peuvent être utilisés comme traceurs minéralogiques: la kaolinite et les carbonates. La teneur en carbonates des sédiments est mis en corrélation avec les épisodes glaciaires du Nouveau-Québec et les récurrences de Cochrane I et II. L'étude en microscopie électronique a révélé l'existence d'une structure floculée dans la fraction fine. Les carbonates et le calcium, en particulier, seraient responsables du type de microstructure observée dans les sédiments : le calcium comme agent de floculation et les carbonates comme ciment entre les particules.
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Putaud, J. P., R. Van Dingenen, A. Dell’Acqua, F. Raes, E. Matta, S. Decesari, M. C. Facchini, and S. Fuzzi. "Size-segregated aerosol mass closure and chemical composition in Monte Cimone (I) during MINATROC." Atmospheric Chemistry and Physics Discussions 3, no. 4 (July 29, 2003): 4097–127. http://dx.doi.org/10.5194/acpd-3-4097-2003.

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Abstract. Physical and chemical characterizations of the atmospheric aerosol was carried out at Mt. Cimone (Italy) during the 4 June–4 July 2000 period. Particle size distributions in the size range 6 nm–10 μm were measured with a differential mobility analyzer (DMA) and a optical particle counter (OPC). Size-segregated aerosol was sampled using a 6-stage low pressure impactor. Aerosol samples were submitted to gravimetric and chemical analyses. Ionic, carbonaceous and refractory components of the aerosol were quantified. We compared the sub- and super-μm aerosol mass concentrations determined by gravimetric measurements (mGM), chemical analyses (mCA), and by converting particle size distribution to aerosol mass concentrations (mSC). Mean random uncertainties associated with the determination of mGM, mCA, and mSD were assessed. The three estimates of the sub-μm aerosol mass concentration agreed, which shows that within experimental uncertainty, the sub-μm aerosol was composed of the quantified components. The three estimates of the super-mm aerosol mass concentration did not agree, which indicates that random uncertainties and/or possible systematic errors in aerosol sampling, sizing or analyses were not adequately accounted for. Aerosol chemical composition in air masses from different origins showed differences, which were significant in regard to experimental uncertainties. During the Saharan dust advection period, coarse dust and fine anthropogenic particles were externally mixed. No anthropogenic sulfate could be found in the super-μm dust particles. In contrast, nitrate was shifted towards the aerosol super-μm fraction in presence of desert dust.
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29

Putaud, J. P., R. Van Dingenen, A. Dell'Acqua, F. Raes, E. Matta, S. Decesari, M. C. Facchini, and S. Fuzzi. "Size-segregated aerosol mass closure and chemical composition in Monte Cimone (I) during MINATROC." Atmospheric Chemistry and Physics 4, no. 4 (June 21, 2004): 889–902. http://dx.doi.org/10.5194/acp-4-889-2004.

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Abstract. Physical and chemical characterizations of the atmospheric aerosol were carried out at Mt. Cimone (Italy) during the 4 June-4 July 2000 period. Particle size distributions in the size range 6nm-10µm were measured with a differential mobility analyzer (DMA) and an optical particle counter (OPC). Size-segregated aerosol was sampled using a 6-stage low pressure impactor. Aerosol samples were submitted to gravimetric and chemical analyses. Ionic, carbonaceous and refractory components of the aerosol were quantified. We compared the sub- and superµm aerosol mass concentrations determined by gravimetric measurements (mGM), chemical analyses (mmCA), and by converting particle size distribution to aerosol mass concentrations (mmSD). Mean random uncertainties associated with the determination of mmGM, mmCA, and mmSD were assessed. The three estimates of the sub-µm aerosol mass concentration agreed, which shows that within experimental uncertainty, the sub-µm aerosol was composed of the quantified components. The three estimates of the super-µm aerosol mass concentration did not agree, which indicates that random uncertainties and/or possible systematic errors in aerosol sampling, sizing or analyses were not adequately accounted for. Aerosol chemical composition in air masses from different origins showed differences, which were significant in regard to experimental uncertainties. During the Saharan dust advection period, coarse dust and fine anthropogenic particles were externally mixed. No anthropogenic sulfate could be found in the super-µm dust particles. In contrast, nitrate was shifted towards the aerosol super-µm fraction in presence of desert dust.
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30

Morrier, Jean-Jacques. "Leucomes et traitement orthodontique. Prévention, traitement." L'Orthodontie Française 85, no. 3 (August 28, 2014): 235–44. http://dx.doi.org/10.1051/orthodfr/2014016.

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Les lésions opaques blanches (leucomes) ou white spots observés autour des attachements orthodontiques constituent une complication assez fréquente observée au cours des traitements orthodontiques fixes. En effet, les attaches orthodontiques et les résines de collage sont des facteurs de rétention du biofilm dentaire, à l’origine de ces lésions. La prise en charge des leucomes comprend la prévention des phénomènes de déminéralisation, les méthodes de reminéralisation des lésions existantes et les techniques de restauration. Elle commence par le respect d’une hygiène bucco-dentaire rigoureuse et d’une hygiène alimentaire correcte. Les fluorures (dentifrices, gels, vernis, bains de bouche, ciments adhésifs, ligature...), les antiseptiques, la CPP-ACP, le laser, les techniques d’éclaircissement, d’érosion-infiltration, de micro-abrasion, font partie des procédures et traitements principalement préconisés. L’objectif de cet article est de faire la synthèse de l’efficacité de ces différents traitements et procédures par une analyse des données basée sur les preuves.
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31

Costa, Ana Rita Damasceno, and Jardel Pereira Gonçalves. "Rheological properties and hydration of ternary cements containing clay brick, clay tile, marble, and phosphogypsum waste." Ambiente Construído 22, no. 4 (December 2022): 59–75. http://dx.doi.org/10.1590/s1678-86212022000400628.

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Abstract No research demonstrates the effect of combined waste raw materials as an alternative to natural sources in Limestone Calcined Clay Cement (LC3). In this context, this study aimed to evaluate the influence of the composition of ternary cements (TCs) containing industrial waste on their rheological and hydration properties. As raw materials, Portland cement and clay brick (CBW), clay tile (CTW), marble (MW), and phosphogypsum (PG) wastes were used. The rheological behaviour of the pastes was analysed by the mini-slump evolution over time and rotational rheometry. Hydration was evaluated by isothermal calorimetry and XRD/Rietveld. An increase in the specific surface area enhances the yield stress and plastic viscosity of the paste. CBW and CTW have pozzolanic reactivity, presenting an increase in the content of non-crystalline phases, including calcium silicate hydrate (C-S-H). The TCs reached at least 70% of the compressive strength of theHigh Early Strength Portland cement paste.The results suggest that CBW, CTW, MW and PG can be used as an alternative to reduce the clinker factor and decrease the environmental and economic impacts associated with extracting natural raw materials for cement production.
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32

De Cesare, Fabio, Gabriela De Souza Balbinot, Vicente Castelo Branco Leitune, and Fabrício Mezzomo Collares. "A influência do tamanho de partícula na reação de presa de cimentos de silicate de cálcio produzidos por sol-gel." Revista da Faculdade de Odontologia de Porto Alegre 62, no. 1 (August 9, 2021): 63–70. http://dx.doi.org/10.22456/2177-0018.108222.

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Introduction: This study aims to analyze the influence of particles size of sol-gel derived calcium silicate particles in the setting reaction of bioactive endodontic cements. Materials and Methods: Sol-gel derived calcium silicate particles were synthesized and sieved to separate the particles in different sizes: CS400, CS200, and CS100. A commercial MTA (Control) was used as control. The particle size and the specific surface area were assessed by laser diffraction and nitrogen adsorption. The cements were prepared with water as the liquid for the reaction. The setting time was conducted according to ISO 6876, and the setting kinetics was analyzed by Fourier transformed infrared spectroscopy (FTIR) at different time points between 120s to 72h. Results: The particle size varied from 9.45µm (CS400 ) to 31.01 (Control). The higher specific surface area valuer reached 15.14g/cm2 in the CS400. The smallest particle sizes, the higher specific surface area, and the lowest setting time were found for CS400 (p < 0.05). Control presented the highest setting time (p < 0.05). The FTIR analyses showed the differences in materials structure over time, with faster hydration and crystallization for CS400. The setting kinetics was slower for Control even when compared to a sol-gel derived group with similar particle size. Conclusion: The route of synthesis and the particle size influences the setting reaction of calcium silicate-based cements. The reduction of particle size for sol-gel derived calcium silicates lead to the acceleration of the setting reaction of the produced bioactive endodontic cement.
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Dedome, Delphine, Olivier Roche, Adrien Jacquot, Marie Leyder, François Sirveaux, and Daniel Molé. "Double mobilité versus cup cimentée dans les reconstructions acétabulaires avec anneau de soutien – analyse du taux de luxation et de l’intégration des greffes." Revue de Chirurgie Orthopédique et Traumatologique 100, no. 7 (November 2014): S266—S267. http://dx.doi.org/10.1016/j.rcot.2014.09.137.

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34

Kamweru, Isaac, Bruce Y. Anani, Yoseph Beyene, Dan Makumbi, Victor O. Adetimirin, Boddupalli M. Prasanna, and Manje Gowda. "Genomic Analysis of Resistance to Fall Armyworm (Spodoptera frugiperda) in CIMMYT Maize Lines." Genes 13, no. 2 (January 28, 2022): 251. http://dx.doi.org/10.3390/genes13020251.

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The recent invasion, rapid spread, and widescale destruction of the maize crop by the fall armyworm (FAW; Spodoptera frugiperda (J.E. Smith)) is likely to worsen the food insecurity situation in Africa. In the present study, a set of 424 maize lines were screened for their responses to FAW under artificial infestation to dissect the genetic basis of resistance. All lines were evaluated for two seasons under screen houses and genotyped with the DArTseq platform. Foliar damage was rated on a scale of 1 (highly resistant) to 9 (highly susceptible) and scored at 7, 14, and 21 days after artificial infestation. Analyses of variance revealed significant genotypic and genotype by environment interaction variances for all traits. Heritability estimates for leaf damage scores were moderately high and ranged from 0.38 to 0.58. Grain yield was negatively correlated with a high magnitude to foliar damage scores, ear rot, and ear damage traits. The genome-wide association study (GWAS) revealed 56 significant marker–trait associations and the predicted functions of the putative candidate genes varied from a defense response to several genes of unknown function. Overall, the study revealed that native genetic resistance to FAW is quantitative in nature and is controlled by many loci with minor effects.
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35

Pereira, Kalena de Melo Maranhão, Fernanda Neves Borges de Oliveira, Clayton Pereira Silva de Lima, Joyce Figueira de Araújo Gatti, and Ana Cássia de Souza Reis. "Comparação da resistência ao cisalhamento após colagem com dois cimentos ortodônticos – estudo in vitro." Orthodontic Science and Practice 13, no. 52 (2020): 96–101. http://dx.doi.org/10.24077/2020;1352-96101.

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The objective of this study was to evaluate the shear strength of orthodontic bands cemented with a new Orthobite composite, comparing them to the conventional glass ionomer cement in bovine enamel and to analyze the Adhesive Remnant Index (ARI). The sample consisted of 30 bovine teeth divided into 2 groups: Group I - Orthobite (FGM) and Group II - CIV MERON (VOCO). Prophylaxis has been made with pumice and water followed by cementation according to the manufacturer’s instructions. Afterwards, they were subjected to the shear test at a speed of 0.5 mm/minute speed. Data were submitted to the Student T and Kruskal- -Wallis tests. Significant statistical differences were found between the groups both in the shear strength values (p> 0.05) and in the ARI assessment (p> 0.05). The Orthobite cement proved to be statistically superior to MERON, that is, it presented a better margins seal and a greater resistance to displacement, so this stable union between the tooth and the band is fundamental for the success of the orthodontic treatment.
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36

Dreisigacker, S., M. Kishii, J. Lage, and M. Warburton. "Use of synthetic hexaploid wheat to increase diversity for CIMMYT bread wheat improvement." Australian Journal of Agricultural Research 59, no. 5 (2008): 413. http://dx.doi.org/10.1071/ar07225.

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To date, the International Maize and Wheat Improvement Center (CIMMYT) has produced more than 1000 synthetic hexaploid wheats (SHWs), using diverse accessions of the D genome donor species (Aegilops tauschii). Many of these SHWs produced from many different Ae. tauschii have shown resistance or tolerance to various biotic and abiotic stresses, indicating the potential importance of the Ae. tauschii gene pool for breeding purposes. SHWs were backcrossed to CIMMYT improved germplasm to produce synthetic backcross-derived lines (SBLs), which are agronomically similar to the improved parents, but retain the introgressed traits of interest under selection and thereby new diversity. Molecular studies show that SHWs and SBLs are genetically diverse at the DNA level when compared with traditional bread wheat cultivars and preferential transmission of some alleles from the SHW parent has been seen in all genomes, indicating positive selection. Marker analyses of wheat cultivars released over time indicate that SBLs are ideal materials to simultaneously increase yield and diversity for other traits. Following successful diversification of the wheat D genome, CIMMYT has shifted to target improvement of hexaploid wheat via the A and B genomes, focusing on specific traits. Screening the CIMMYT germplasm collection of T. turgidum subsp. dicoccum for Russian wheat aphid resistance and drought tolerance revealed varying levels of phenotypic expression. Promising accessions will be used for the production of new SHWs for future introgressions into elite bread wheat backgrounds.
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37

Köstli, Huber, and Huber. "Short Term Results of 21 Non Cemented Meniscal-Bearing Total Ankle Prosthesis." Swiss Surgery 5, no. 6 (December 1, 1999): 265–70. http://dx.doi.org/10.1024/1023-9332.5.6.265.

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Buts de l'étude: Présentation d'une série de 21 prothèses totales de cheville non cimentées à ménisque et analyse des résultats à court terme. Matériel et méthode: 21 prothèses totales de cheville ont été implantées chez 21 patients d'un âge moyen de 63.5 ans. L'origine de l'arthrose était post-traumatique ou primaire. Notre recul moyen est de 21 mois. Résultats: Les résultats ont été évalués en utilisant le score de Koefod. 11 patients ont obtenu un excellent, 7 un bon résultat et 2 un résultat moyen. Un cas fut un échec et a nécessité une arthrodèse. Discussion: La prothèse totale de cheville non cimentée à ménisque permet d'obtenir à court terme une bonne indolence et une bonne fonction malgré un faible gain des amplitudes articulaires. Ces résultats apparaissent comme encourageants.
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38

Coupry, Augustin, Louis Rony, Florian Ducellier, Laurent Hubert, and Daniel Chappard. "Analyse de la texture de l’os trabéculaire autour d’une cupule non cimentée RM Pressfit® : une série de 46 cas sur une période de 5 ans." Revue de Chirurgie Orthopédique et Traumatologique 105, no. 7 (November 2019): 844. http://dx.doi.org/10.1016/j.rcot.2019.07.015.

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39

Antunes, Elaine Guglielmi Pavei, and Alessandro Gomes dos Santos. "Ladrilho hidráulico para pavimentação de calçada: estudo do traço e da espessura da camada superficial." Revista Técnico-Científica de Engenharia Civil Unesc - CIVILTEC 4, no. 1 (April 14, 2021): 73. http://dx.doi.org/10.18616/civiltec.v4i1.6220.

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Os ladrilhos hidráulicos são pisos de concreto utilizados para pavimentação de calçadas, composta por duas ou mais camadas, produzidos com aglomerante hidráulico e agregados. O objetivo deste trabalho, busca, analisar a influência do traço e da camada superficial no desempenho das peças produzidas, através de ensaios solicitados pelas normas vigentes. Os agregados utilizados na mistura foram submetidos a ensaio de teor de umidade e granulometria. O aglomerante utilizado tratou-se do cimento Portland de alta resistência inicial. A produção dos ladrilhos foi realizada com a utilização de formas com medidas previamente definidas e utilização de mesa vibratória para moldagem. Neste estudo foi analisado a variação do traço e espessura da camada superficial de ladrilhos hidráulicos, sendo elas, submetidas a ensaios de módulo de flexão, analise dimensional e desgaste por abrasão, seguindo respectivamente a NBR 9457:2013, NBR 13818:1997 e NBR 9781:2013. Os ladrilhos hidráulicos produzidos, obtiveram um desempenho satisfatório e esperado em relação ao desgaste por abrasão, com resultados dentro das recomendações normativas. Quando solicitados ao ensaio de flexão, não houve relação dos resultados conforme as variações de produção realizadas, obtendo desempenho insatisfatório e abaixo dos requisitos recomendado pela NBR 9457:2013.
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40

Chisaka, Arisede, Vivi Arief, Amsal Tarekegne, and Mark Dieters. "Identification of New Single Cross Testers for CIMMYT Heterotic Group B Maize Germplasm Adapted to Mid-Altitudes." Proceedings 36, no. 1 (April 10, 2020): 218. http://dx.doi.org/10.3390/proceedings2019036218.

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The development of higher yielding maize (Zea mays L.) hybrids adapted to low input small-holder farming systems in sub-Saharan Africa is required. Three-way hybrids (i.e. F1 tester crossed to inbred line) can be produced at lower cost for smallholder farmers, but to achieve this it is crucial for CIMMYT-Zimbabwe maize breeding program to identify new high yielding single cross testers with high combining ability to support the development of new high yielding hybrids for this region. Data collected on the performance of F1 and three-way hybrids from a total of 25 multi-environment trials (METs) located in South Africa (three trials), Zambia (four trials) and Zimbabwe (eighteen trials) grown across two seasons during the period from 2015–2018 to: (i) identify new single cross testers for CIMMYT HG-B maize germplasm; (ii) identify stable and high yielding three-way hybrids. Analyses were conducted using a two-stage approach. Clustering based on yield data, grouped sites into three environment types (ET); low (LY) < 3 t ha−1, medium (MY) 3–6 t ha−1 and high (HY) 6–13 t ha−1 yielding groups. Additive genetic effects of both inbred parents and selected F1 crosses used as parents were more important than non-additive genetic effects for grain yield across ETs. Strong genotype x environment interactions on yield and other traits were observed. It was concluded that F1 hybrids (entry 75, 85, 72 and 28) demonstrated high yield across all environment types, and it is recommended that these be also evaluated as potential three-way hybrids. Single crosses CZL15085/CML566 and CZL15085/CZL13102 from heterotic group B to be used as testers for ET 1 and ET 2 respectively.
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Zhu, Zheng-Rong, Lan Zou, Yue Xing, Yu-Can Tan, Guo-Jian Xu, Zhi-Jian He, Jian-Qiang Cao, et al. "Predictors of primary patency after percutaneous balloon angioplasty for stenosis of Brescia-Cimino hemodialysis arteriovenous fistula." British Journal of Radiology 93, no. 1109 (May 1, 2020): 20190505. http://dx.doi.org/10.1259/bjr.20190505.

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Objective: Percutaneous transluminal balloon angioplasty (PTA) is recommended as the first choice to treat stenosis of Brescia-Cimino arteriovenous fistulas (B-C AVFs). The ability to predict which B-C AVFs are at risk for recurrent stenosis post-PTA would allow closer monitoring of patients, and possibly result in surgical intervention rather than repeat PTA. The purpose of this study was to identify predictive factors of primary patency after PTA in B-C AVFs. Methods: Patients diagnosed with B-C AVF primary stenosis and treated by PTA between November 2013 and March 2018 were included in the study. Patient and stenotic lesion characteristics and PTA procedure factors were included in the analysis. The Kaplan–Meier method was used to analyze the primary patency rate. Cox proportional hazard regression analysis was used to identify factors predictive of decreased primary patency. Results: 74 patients (35 males, 39 females) with a mean age of 61.68 ± 11.44 years (range, 36–84 years) were included in the study. The mean B-C AVF age was 16.34 ± 12.93 months (range, 2–84 months), and the median primary patency time was 7.79 ± 0.48 months. Cox proportional hazard regression analysis revealed stenosis location at the inflow artery [hazard ratio (HR)=3.83, 95% confidence interval (CI): 1.46–10.09] or anastomosis (HR = 1.90, 95% CI: 1.09–3.32), dilation >2 times during PTA (HR = 2.30, 95% CI: 1.22–4.34), and residual stenosis >30% (HR = 2.42, 95% CI: 1.26–4.63) were significantly associated with decreased patency. Conclusion: In conclusion, the primary patency rate of PTA for B-C AVF dysfunction is reduced by dilation >2 times, residual stenosis >30%, and stenosis located at the inflow artery or anastomosis. These results may help in tailoring surveillance programs, multiple PTA, or a proximal re-anastomosis surgery in patients with AVF dysfunction. Advances in knowledge: A number of studies have been conducted to examine the predictors of primary patency after PTA, however, no definitive conclusions have been reached. Our study revealed that stenosis location at the inflow artery or anastomosis, dilation >2 times during PTA, and residual stenosis >30% were the predictors of primary patency after PTA, which may help in tailoring surveillance programs, multiple PTA, or a proximal re-anastomosis surgery in patients with arteriovenous fistulas dysfunction.
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42

HODSON, D. P., and J. W. WHITE. "PAPER PRESENTED AT INTERNATIONAL WORKSHOP ON INCREASING WHEAT YIELD POTENTIAL, CIMMYT, OBREGON, MEXICO, 20–24 MARCH 2006 Use of spatial analyses for global characterization of wheat-based production systems." Journal of Agricultural Science 145, no. 02 (February 13, 2007): 115. http://dx.doi.org/10.1017/s0021859607006855.

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43

Čmiková, Natália, Lucia Galovičová, Marianna Schwarzová, Milena D. Vukic, Nenad L. Vukovic, Przemysław Łukasz Kowalczewski, Ladislav Bakay, Maciej Ireneusz Kluz, Czeslaw Puchalski, and Miroslava Kačániová. "Chemical Composition and Biological Activities of Eucalyptus globulus Essential Oil." Plants 12, no. 5 (February 28, 2023): 1076. http://dx.doi.org/10.3390/plants12051076.

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Eucalyptus globulus essential oil (EGEO) is considered as a potential source of bioactive compounds with significant biological activity. The aim of this study was to analyze the chemical composition of EGEO, in vitro and in situ antimicrobial activity, antibiofilm activity, antioxidant activity, and insecticidal activity. The chemical composition was identified using gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). The main components of EGEO were 1,8-cineole (63.1%), p-cimene (7.7%), a-pinene (7.3%), and a-limonene (6.9%). Up to 99.2% of monoterpenes were present. The antioxidant potential of essential oil and results indicate that 10 μL of this sample can neutralize 55.44 ± 0.99% of ABTS•+, which is equivalent to 3.22 ± 0.01 TEAC. Antimicrobial activity was determined via two methods: disk diffusion and minimum inhibitory concentration. The best antimicrobial activity was shown against C. albicans (14.00 ± 1.00 mm) and microscopic fungi (11.00 ± 0.00 mm–12.33 ± 0.58 mm). The minimum inhibitory concentration showed the best results against C. tropicalis (MIC 50 2.93 µL/mL, MIC 90 3.17 µL/mL). The antibiofilm activity of EGEO against biofilm-forming P. flourescens was also confirmed in this study. The antimicrobial activity in situ, i.e., in the vapor phase, was significantly stronger than in the contact application. Insecticidal activity was also tested and at concentrations of 100%, 50%, and 25%; the EGEO killed 100% of O. lavaterae individuals. EGEO was comprehensively investigated in this study and information regarding the biological activities and chemical composition of the essential oil of Eucalyptus globulus was expanded.
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Moulouel, Hakim, Luca Micarelli, Isabelle Moretti, and Djamel Machane. "Fracturation des carbonates dans la zone de faille normale active d’Aigion (Grèce) à partir des carottes du puits: conséquences sur les propriétés de transfert de fluides." Bulletin de la Société Géologique de France 186, no. 6 (October 1, 2015): 387–97. http://dx.doi.org/10.2113/gssgfbull.186.6.387.

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Abstract La faille d’Aigion appartient à un système de failles normales à pendage nord affectant la bordure sud du golfe de Corinthe, témoin d’une extension active d’échelle régionale caractérisant la région égéenne. Les carottes du forage AIG-10, qui a traversé cette faille, montrent la présence d’une zone endommagée et d’une gouge. Ce travail présente une analyse des lames minces faites à partir de ces carottes. Il confirme la zonation en termes de fracturation à l’approche de la faille. Loin de cette dernière, la fracturation héritée de la phase compressive de l’orogenèse hellénique est dominante, bien qu’il existe aussi une famille E-W liée à l’extension actuelle. Toutes ces fractures sont scellées et le remplissage est similaire d’un point de vue luminescence au calcaire hôte. A l’approche du coeur, la quantité de fractures liées à la faille augmente; le remplissage de ces fractures indique, en cathodoluminescence, le passage de plusieurs fluides qui seraient d’origine externe, et la dernière génération de fractures est encore ouverte. Au mur de la faille, sous 5 m d’épaisseur verticale de cataclasite et d’ultracataclasite dans les calcaires et radiolarites (coeur de faille) et 13 m d’épaisseur verticale de gouge dans les radiolarites, les observations sont plus limitées, car la présence d’un karst a restreint les possibilités de carottage. Néanmoins, on peut observer que le remplissage des fractures liées à l’extension est différent de ce qui nous a été dévoilé au toit. Ceci suggère que la faille, transversalement imperméable aujourd’hui, l’a toujours été. L’analyse de la succession des ciments met en évidence une perméabilité parallèle à la faille à la faveur d’un système de fractures et fentes jeunes et ouvertes, pendant qu’est discuté le transfert de fluides par rapport aux stades de propagation de la faille.
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Bozkus, Cansu Cimen, Mona Saleh, Rachel Brody, Stephanie V. Blank, and Nina Bhardwaj. "Abstract 253: Analyses of tumor-specific T cell dynamics and tumor immune contexture in microsatellite instability-high cancers in response to first-line therapy." Cancer Research 82, no. 12_Supplement (June 15, 2022): 253. http://dx.doi.org/10.1158/1538-7445.am2022-253.

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Abstract Microsatellite instability-high (MSI-H) phenotype arises from defective DNA repair mechanisms and is found in many malignancies, including colorectal and endometrial cancers. Due to high neoantigen loads derived from tumor-specific mutations, evidence of tumor-infiltrating T cells and high response rates to checkpoint blockade (30-60%), MSI-H cancers can be leveraged to study the features of neoantigen-induced anti-tumor immunity in response to therapy and disease outcome. Previously we identified a set of recurrent frameshift (fs) mutations in MSI-H cancers that yielded immunogenic polyepitope neoantigens (neoAgs) eliciting CD8+ T cell responses. Here we investigate whether these shared fs-neoAgs engendered spontaneous T cell responses in MSI-H colorectal and endometrial cancer patients. Using peripheral blood mononuclear cells (PBMCs), we evaluated the frequency of the fs-neoAg-specific T cells by ex vivo IFN-γ ELISPOT upon fs-peptide stimulation. Additionally, we isolated naïve and memory T cells from MSI-H patient PBMCs and expanded fs-neoAg-specific T cells within each subset. Fs-neoAg-induced effector cytokine (IFN-γ, TNF-α) production was measured by flow cytometry and was detected only in the memory subset, supporting the hypothesis that shared fs-neoAgs prime CD8+ T cells in vivo to generate clonally-expanded memory T cells in MSI-H patients. To further evaluate the clonal expansion of fs-neoAg-specific T cells in MSI-H cancer patients, we identified fs-neoAg-specific T cell receptors (TCRs). T cell lines enriched for fs-neoAg-specific T cells were generated from patient PBMCs and sequenced for variable β chains of TCRs. These fs-neoAg-specific TCRs were monitored in the blood and tumor tissues, including those from primary and recurrent sites. Finally, to determine the spatial relationships between the infiltrating immune cells and the malignant cells at single cell resolution, we performed multiplexed immunohistochemistry using CODEX technology. A panel of 35 markers was used to evaluate the myeloid (HLA-DR, CD11c, CD14, CD68, CD206) and T (CD4, CD8, Foxp3) cell subsets, the activation (CD107a, CD69, Ki67) and exhaustion (PD-1, TIM3, LAG3) status of T cells, T cell states (TCF-1, TOX, PD-1) and the presence of tertiary lymphoid structures/antigen presenting cell niches (CD19, CD20, HLA-DR) in the tumor microenvironment of primary or recurrent MS-stable and MSI-H tumors from endometrial cancer patients. We also investigated potential immune escape mechanisms in MSI-H tumors, such as the loss of B2M and MHC-I expression. This study will provide insights into the quality and quantity of shared anti-tumor T cells within the periphery and tumor tissues and will help identify the immune correlates of response or resistance to therapy in MSI-H cancer patients. Citation Format: Cansu Cimen Bozkus, Mona Saleh, Rachel Brody, Stephanie V. Blank, Nina Bhardwaj. Analyses of tumor-specific T cell dynamics and tumor immune contexture in microsatellite instability-high cancers in response to first-line therapy [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2022; 2022 Apr 8-13. Philadelphia (PA): AACR; Cancer Res 2022;82(12_Suppl):Abstract nr 253.
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46

Harapan Gulo, One Berkat. "Pengaruh Kesadaran Wajib Pajak, Modernisasi Administrasi Perpajakan, Sanksi Pajak dan Keadilan Perpajakan Terhadap Kepatuhan Wajib Pajak (Studi Empiris Pada Pemilik Umkm di Kelurahan Cimone, Kecamatan Karawaci, Kota Tangerang)." eCo-Fin 3, no. 3 (October 10, 2021): 350–64. http://dx.doi.org/10.32877/ef.v3i3.513.

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The importance of the role of taxes to support the progress of the nation and national development. This study was conducted to analyze the factors that affect taxpayer compliance, the independent variables used in testing MSME taxpayer compliance are taxpayer awareness, modernization of tax administration, tax sanctions and tax justice for business actors who carry out micro, small and medium business activities. registered in the Cimone sub-district, Karawaci district, Tangerang city. This study uses quantitative methods, collecting data through the distribution of questionnaires directly to MSMEs in Cimone Village, Karawaci District, Tangerang City. The sampling technique used in this research is the purposive sampling technique and the slovin method so that the samples that will be used are those included in the criteria: 1) MSME entrepreneurs who have income < 4.8 billion per year, 2) MSME actors who have a TIN, 3) do activity. Data analysis techniques are descriptive statistics, instrument testing, classical assumption testing, and multiple linear regression which are processed using SPSS version 25 software. The conclusion from the results of this study partially is that taxpayer awareness, modernization of tax administration, tax sanctions and tax justice have a significant effect on taxpayer compliance
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47

Conceição, Fabiano Tomazini da, Maria Lúcia Pereira Antunes, Vivian Andréia Angelucci, Rodrigo Braga Moruzzi, and Guillermo Rafael Beltran Navarro. "RAINWATER CHEMICAL COMPOSITION AND ANNUAL ATMOSPHERIC DEPOSITION IN SOROCABA (São Paulo State), Brazil." Revista Brasileira de Geofísica 31, no. 1 (March 1, 2013): 5. http://dx.doi.org/10.22564/rbgf.v31i1.242.

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ABSTRACT: This work evaluated the rainwater chemical composition and the annual atmospheric deposition in Sorocaba (São Paulo State), Brazil. One sampling point was chosen and forty samples were collected between January and December 2006. The analyses were performed for pH, electrical conductivity, sodium, calcium, potassium, magnesium, sulphate, nitrate, phosphate, alkalinity and chloride. The rainwater pH varied from 5.20 to 6.40, being Ca 2 + the main ion responsible for controlling the rainwater pH. The ionic concentration decreases in the following order: Ca 2 + >Na+ > K+ >Mg 2 + for cations and SO 2 − 4 >HCO− 3 >NO− 3 >Cl− >PO 3 − 4 for anions. The annual atmospheric deposition appears to be controlled by the following sources: mining activities and cement factories (Ca 2 + and HCO− 3 ), agricultural activities (K+, NO− 3 and PO 3 − 4 ), soil dust (Na+, Mg 2 + and HCO− 3 ) and fossil fuel burning (SO 2 − 4 ). RESUMO: Este trabalho avaliou a composição química das águas pluviais e a deposição atmosférica anual na cidade de Sorocaba (SP). Um ponto de amostragem foi escolhido e quarenta amostras foram coletadas entre janeiro e dezembro de 2006. As amostras foram caracterizadas em relação ao pH, condutividade elétrica, sódio, cálcio, potássio, magnésio, sulfato, nitrato, fosfato, alcalinidade e cloreto. O pH das águas de chuva variou entre 5,20 e 6,40, sendo o Ca 2 + o principal íon responsável pelo controle do pH das águas de chuva. A concentração iônica diminui na seguinte ordem: Ca 2 + >Na+ >K+ >Mg 2 + para os cátions e SO 2 − 4 >HCO− 3 >NO− 3 >Cl− >PO 3 − 4 para os ânions. A deposição atmosférica anual parece ser controlada pelas seguintes fontes: minerações e fábricas de cimento (Ca 2 + e HCO− 3 ), atividades agrícolas (K+, NO− 3 e PO 3 − 4 ), poeira de solo (Na+, Mg 2 + e HCO− 3 ) e queima de combustíveis fósseis (SO 2 − 4 ).Palavras-chave: Sorocaba, composição da água de chuva, poluição atmosférica.
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48

Kačániová, Miroslava, Nenad L. Vukovic, Natália Čmiková, Lucia Galovičová, Marianna Schwarzová, Veronika Šimora, Przemysław Łukasz Kowalczewski, et al. "Salvia sclarea Essential Oil Chemical Composition and Biological Activities." International Journal of Molecular Sciences 24, no. 6 (March 8, 2023): 5179. http://dx.doi.org/10.3390/ijms24065179.

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Salvia sclarea essential oil (SSEO) has a long tradition in the food, cosmetic, and perfume industries. The present study aimed to analyze the chemical composition of SSEO, its antioxidant activity, antimicrobial activity in vitro and in situ, antibiofilm, and insecticidal activity. Besides that, in this study, we have evaluated the antimicrobial activity of SSEO constituent (E)-caryophyllene and standard antibiotic meropenem. Identification of volatile constituents was performed by using gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS) techniques. Results obtained indicated that the main constituents of SSEO were linalool acetate (49.1%) and linalool (20.6%), followed by (E)-caryophyllene (5.1%), p-cimene (4.9%), a-terpineol (4.9%), and geranyl acetate (4.4%). Antioxidant activity was determined as low by the means of neutralization of the DDPH radical and ABTS radical cation. The SSEO was able to neutralize the DPPH radical to an extent of 11.76 ± 1.34%, while its ability to decolorize the ABTS radical cation was determined at 29.70 ± 1.45%. Preliminary results of antimicrobial activity were obtained with the disc diffusion method, while further results were obtained by broth microdilution and the vapor phase method. Overall, the results of antimicrobial testing of SSEO, (E)-caryophyllene, and meropenem, were moderate. However, the lowest MIC values, determined in the range of 0.22–0.75 µg/mL for MIC50 and 0.39–0.89 µg/mL for MIC90, were observed for (E)-caryophyllene. The antimicrobial activity of the vapor phase of SSEO (towards microorganisms growing on potato) was significantly stronger than that of the contact application. Biofilm analysis using the MALDI TOF MS Biotyper showed changes in the protein profile of Pseudomonas fluorescens that showed the efficiency of SSEO in inhibiting biofilm formation on stainless-steel and plastic surfaces. The insecticidal potential of SSEO against Oxycarenus lavatera was also demonstrated, and results show that the highest concentration was the most effective, showing insecticidal activity of 66.66%. The results obtained in this study indicate the potential application of SSEO as a biofilm control agent, in the shelf-life extension and storage of potatoes, and as an insecticidal agent.
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Cristofanelli, P., F. Fierli, A. Marinoni, R. Duchi, J. Burkhart, A. Stohl, M. Maione, J. Arduini, and P. Bonasoni. "Influence of biomass burning and anthropogenic emissions on ozone, carbon monoxide and black carbon concentrations at the Mt. Cimone GAW-WMO global station (Italy, 2165 m a.s.l.)." Atmospheric Chemistry and Physics Discussions 12, no. 8 (August 21, 2012): 21399–435. http://dx.doi.org/10.5194/acpd-12-21399-2012.

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Abstract. This work investigates the variability of ozone (O3), carbon monoxide (CO) and equivalent black carbon (BC) concentrations at the Italian Climate Observatory "O. Vittori" (ICO-OV), part of the Mt. Cimone global GAW-WMO station (Italy). For this purpose, ICO-OV observations carried out in the period January 2007–June 2009, have been analysed and correlated with the output of the FLEXPART Lagrangian dispersion model to specifically evaluate the influence of biomass burning (BB) and anthropogenic emissions younger than 20 days. During the investigation period, the average O3, CO and BC concentrations at ICO-OV were 54 ± 3 ppbv, 122 ± 7 ppbv and 213 ± 34 ng m−3 (mean ± expanded uncertainty with p<95%), with clear seasonal cycles characterized by summer maxima and winter minima for O3 and BC and spring maximum and summer minimum for CO. According to FLEXPART output, BB impact is maximized during the warm months from July to September but appeared to have a significant contribution to the observed tracer concentrations only during specific transport events. We characterised in detail five major events with respect to transport scales (i.e. global, regional and local), source regions and O3, CO and BC variations. For these events, very large variability of enhancement ratios O3/CO (from −0.22 to 0.71) and BC/CO (from 2.69 to 29.83 ng m−3 ppbv−1) were observed. CO related with anthropogenic emissions (COant) contributed to 17.4% of the mean CO value observed at ICO-OV, with the warm months appearing particularly affected by transport events of air-masses rich in anthropogenic pollution. The proportion of tracer variability that is described by FLEXPART COant peaked to 37% (in May–September) for CO, 19% (in May–September) for O3 and 32% (in January–April) for BC. During May–September, the analysis of the correlation among CO, O3 and BC as a function of the COant indicated that ICO-OV was influenced by air-masses rich in anthropogenic pollution transported from the regional to the global scale. On the other side, CO and O3 were negatively correlated during October–December, when FLEXPART does not show significant presence of recent anthropogenic emissions and only a few observations are characterized by enhanced BC. Such behaviour may be attributed to an ensemble of processes concurrent in enhancing O3 with low CO (upper troposphere/lower stratosphere intrusions) and O3 titration by NO in polluted air-masses along with lower photochemical activity. An intermediate situation occurs in January–April when CO and O3 were almost uncorrelated and BC enhancements were associated to relatively old (10 days) anthropogenic emissions.
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50

Holanda, Werlem, Sergio Bergamaschi, Anderson Costa dos Santos, René Rodrigues, and Luiz Carlos Bertolino. "CHARACTERIZATION OF THE ASSISTÊNCIA MEMBER, IRATI FORMATION, PARANÁ BASIN, BRAZIL: ORGANIC MATTER AND MINERALOGY / CARACTERIZAÇÃO DO MEMBRO DO ASSISTÊNCIA, FORMAÇÃO IRATI, BACIA DO PARANÁ, BRASIL: MATÉRIA ORGÂNICA E MINERALOGIA." Journal of Sedimentary Environments 3, no. 1 (March 23, 2016): 36–45. http://dx.doi.org/10.12957/jse.2018.33304.

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Currently, the Irati Formation, in Paraná Basin, Brazil, represents one of the world's largest reserves of oil shale. Among the shale-derived products stands out the fuel oil, gas, naphtha, fuel, liquefied gas, and sulfur, in addition to byproducts that can be used by the asphalt, cement, agricultural, and ceramics industries. This study describes and illustrates features of organic-rich shales of the Lower Permian Assistência Member, Irati Formation, scanning electron microscopy (SEM) was combined with energy-dispersive x-ray spectrometric (EDS), x-ray diffraction (XRD), total organic carbon (TOC), total sulfur (S), insoluble residue (IR) and Rock-Eval pyrolysis to characterize the mineral composition, organic matter distribution and different types of pore at the micrometer scale. These analyses were performed on samples from well SP-32-PR located in the Sapopema township, Northeast Paraná State, in South of Brazil. The investigations demonstrated that the Assistance Member has high total organic carbon (TOC) content, generation potential (S2) and hydrogen index (HI), but is in an immature stage. The mineralogical content of the Assistência Member presents intervals rich in quartz, plagioclase, carbonates and clay minerals. Pores distribution includes intraparticle within organic matter and interparticle pores in pyrite framboids, surrounding quartz grains and between organic matter and mineral grains. ResumoAtualmente, a Formação Irati, na Bacia do Paraná, no Brasil, representa uma das maiores reservas mundiais de Petróleo de xisto. Entre os produtos derivados do xisto, destacam-se o óleo combustível, gás, nafta, combustível, gás liquefeito e enxofre, além de subprodutos que podem ser utilizados pelas indústrias de asfalto, cimento, agricultura e cerâmica. Este estudo descreve e ilustra características de xistos ricos em matéria orgânica do Membro Permiano Inferior Assistência, Formação Irati. Microscopia eletrônica de varredura (SEM) foi combinada com Espectrometria de Raios-X de energia dispersiva (EDS), Difração de Raios-X (XRD), carbono orgânico total (COT), enxofre total (S), resíduo insolúvel (IV) e pirólise Rock-Eval para a caracterização da composição mineral, distribuição da matéria orgânica e diferentes tipos de poros à escala micrométrica. Essas análises foram realizadas em amostras do poço SP-32-PR localizadas no município de Sapopema, no nordeste do Paraná, no sul do Brasil. As investigações demonstraram que o Membro de Assistência possui elevado teor de carbono orgânico total (TOC), potencial de geração (S2) e índice de hidrogênio (HI), mas está em um estágio imaturo. O conteúdo mineralógico do Membro Assistência apresenta intervalos ricos em quartzo, plagioclásio, carbonatos e minerais argilosos. A distribuição dos poros inclui intra-partículas na matéria orgânica e poros inter-partículas em framboides de pirita, nos grãos de quartzo circundantes e na matéria orgânica e noutros grãos minerais.
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