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Articoli di riviste sul tema "Entreprises du CAC 40"

Autore: Grafiati

Pubblicato: 9 novembre 2024

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1

Igalens, Jacques, e Najoua Tahri. "Atteindre l’objectif de neutralité carbone en 2050, une gageure pour les entreprises françaises ?" Management & Sciences Sociales N° 34, n. 1 (1 gennaio 2023): 90–102. http://dx.doi.org/10.3917/mss.034.0090.

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L’objectif de neutralité carbone est devenu incontournable pour les États comme pour les organisations, il concerne également les individus. Nous nous attachons dans cette communication à étudier le cas des entreprises industrielles françaises du CAC 40. Dans un premier temps, nous montrons que globalement les dirigeants français sont assez sceptiques sur la capacité des entreprises d’atteindre les objectifs fixés. Nous comparons ensuite (pour les entreprises industrielles du CAC 40) la réalité des intensités carbone aux engagements sur le sujet des émissions de GES tels qu’ils sont exprimés dans les déclarations de performance extra-financières (désormais DPEF). Nos résultats montrent que les « entreprises à faible intensité carbone » et les « entreprises à forte intensité carbone » ne communiquent pas de façon identique et que généralement les « entreprises à forte intensité carbone » ont une divulgation plus détaillée et légèrement plus longue s’appuyant sur des exposés rhétoriques alors que les « entreprises à faible intensité carbone » communiquent mieux, c’est-à-dire qu’elles donnent de façon plus complète les éléments que contient le référentiel retenu .

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Farjaudon, Anne-Laure, e Nathalie Gardès. "La maturité cyber au prisme de la communication extra-financière : une analyse des entreprises du CAC 40". Revue Française de Gestion Industrielle 38, n. 2 (30 aprile 2024): 67–85. http://dx.doi.org/10.53102/2024.38.02.1187.

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L’objectif de ce papier est d’analyser le contenu des informations diffusées par les entreprises pour en déduire leur niveau de maturité en cas de cyberattaques. La survie d’une organisation ne dépend pas uniquement d’actions relatives à la cybersécurité, mais bien de sa capacité à récupérer et apprendre et donc à être résiliente. La résilience d’une organisation face à un risque cyber intéresse donc au plus haut point les parties prenantes. Si la communication extra-financière est un sujet qui préoccupe les chercheurs depuis longtemps, rares sont les articles qui s'intéressent à la communication en matière de risques cyber. L’objectif de cette étude est de caractériser la communication des grandes entreprises en la matière, notamment en identifiant la nature des informations publiées dans les rapports annuels et leur degré de précision. L’analyse des pratiques de diffusion de l’information nous permet de caractériser le degré de cyber résilience des entreprises du CAC 40

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Djoutsa Wamba, Léopold, Frédéric Teulon e Jean-Michel Sahut. "Risque et gouvernance". La Revue des Sciences de Gestion N° 306, n. 6 (22 aprile 2021): 57–68. http://dx.doi.org/10.3917/rsg.306.0061.

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Suite aux réformes législatives qui visent à renforcer la gouvernance des entreprises notamment en France au travers de la loi NRE de 2012, cet article analyse s’il existe un lien entre les bonnes pratiques de gouvernance et le risque pour les grandes entreprises françaises. À partir de l’analyse des entreprises du CAC 40 sur la période 2002-2014, nous montrons que la qualité de la gouvernance diminue le risque systémique. En particulier, le fonctionnement du conseil et la politique de rémunération des dirigeants et des administrateurs sont les deux dimensions des pratiques de gouvernance réellement significatives.

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4

Maurel, Christophe, e Mouloud Tensaout. "Une étude des configurations stratégiques explicatives de l’intégration de la RSE". La Revue des Sciences de Gestion N° 303-304, n. 3 (29 gennaio 2021): 105–16. http://dx.doi.org/10.3917/rsg.303.0109.

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L’objectif de cet article est d’analyser l’évolution des structures de propriété des entreprises du CAC 40 entre début 2010 et fin 2019. Nous partons du postulat que c’est à ce niveau que se situent les principaux pôles de pouvoir au sein des organisations (au-delà de la simple mise en évidence d’un actionnaire de référence). Dans cette optique, nous nous posons la question de la reconsidération de la théorie de l’agence sous l’angle d’un rapport principal/principal en sortant de la configuration principal/agent, telle qu’envisagée par cette théorie. Si la mise en évidence d’un actionnaire dominant peut traduire la configuration actionnariale d’une entreprise, elle ne permet cependant pas de percevoir les possibilités de coalitions entre des actionnaires possédant des profils relativement similaires. Dans cette optique, nous proposons, premièrement, d’analyser les orientations actionnariales sur la base d’une variable liée à l’éventuel degré d’attachement à l’entreprise. Deuxièmement, pour mieux appréhender la notion de voisinage actionnarial et de rapports de force au sein des entreprises, nous prenons également en considération les principaux binômes actionnariaux des entreprises considérées. Les résultats obtenus démontrent que la période considérée a été caractérisée par un retrait de gros investisseurs (attachés ou non à l’entreprise) au profit d’un plus grand éclatement des droits de propriété.

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Chalençon, Ludivine, Ulrike Mayrhofer e Manon Meschi. "La politique d'acquisition des multinationales face à la pandémie". Revue Française de Gestion 49, n. 311 (luglio 2023): 53–74. http://dx.doi.org/10.3166/rfg.311.53-74.

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Cet article examine les effets de la crise sanitaire sur la politique d'acquisition des entreprises multinationales. L'étude empirique porte sur les acquisitions réalisées par les multinationales françaises du CAC 40 en 2019 et 2020. Les résultats montrent que, suite à l'annonce de la pandémie, ces multinationales ont fortement réduit le nombre d'acquisitions et privilégié des opérations orientées vers des activités complémentaires et des cibles de plus petite taille localisées dans des économies matures. Notre recherche met en relief les réactions des multinationales françaises face à la pandémie et enrichit notre compréhension des effets que les chocs exogènes peuvent avoir sur les comportements stratégiques des entreprises.

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Duport, Michelle, e Jean-Marie Peretti. "Les engagements en matière de responsabilité sociale, sociétale et environnementale en Afrique à travers les déclarations de performance extra-financière des entreprises (DPEF)". Revue Management & Innovation N° 1, n. 1 (20 marzo 2020): 101–18. http://dx.doi.org/10.3917/rmi.201.0101.

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Cet article étudie, à travers les DPEF 2018 de six entreprises françaises du CAC 40 implantées en Afrique, leurs engagements en matière de responsabilité sociale, sociétale dans les différents pays où elles opèrent. L’analyse du discours produit par les entreprises révèle la manière dont elles conçoivent leur politique RSE et permet de recenser les actions mises en œuvre. Les auteurs s’interrogent sur la transformation des politiques affichées en indicateurs et en objectifs mesurables mais également sur la pertinence des actions et sur leur adéquation avec les attentes et les besoins locaux, notamment ceux des communautés de riverains en Afrique. L’article conclue sur l’image que renvoie de l’Afrique les DPEF.

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Jahmane, Abderrahman, e Mahrane Hofaidhllaoui. "L’influence des stratégies RSE sur la performance financière : cas des entreprises du CAC 40". Question(s) de management 32, n. 2 (2 aprile 2021): 127–42. http://dx.doi.org/10.3917/qdm.212.0127.

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Angelini, Christine, Evelyne Lombardo e Isabelle Pignatel. "Les pratiques environnementales au sein du CAC 40. Un regard sur les entreprises visionnaires". Revue française de gestion 38, n. 222 (28 marzo 2012): 35–54. http://dx.doi.org/10.3166/rfg.222.35-54.

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9

Boussard, Valérie, e François-Xavier Dudouet. "Quelle autorité pour les femmes à la tête des sociétés du CAC 40 ?" Revue française de sociologie Vol. 64, n. 1 (22 gennaio 2024): 111–45. http://dx.doi.org/10.3917/rfs.641.0111.

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À la suite de l’adoption de la loi Copé-Zimmermann en 2011, les femmes ont fait une entrée signalée dans les instances dirigeantes des grandes entreprises françaises. Sont-elles pour autant devenues des femmes de pouvoir ? Notre article examine les transformations éventuelles du monde des affaires français en étudiant les formes d’autorité que les femmes ont acquises. Distinguant deux types d’autorité, l’une institutionnelle, l’autre relationnelle, nous comparons systématiquement les femmes et les hommes. Nous montrons que le nouvel équilibre masque une distribution genrée inégale des formes d’autorité institutionnelle. En revanche, les femmes occupent une place centrale au sein du réseau des administrateurs du CAC 40 en étant plus multipositionnées que les hommes. Toutefois, le cumul de leurs positions d’autorité demeure en deçà de celui des hommes. Plus souvent indépendantes ou étrangères, régulièrement nommées pour leur proximité avec la présidence ou la direction, les femmes sont peu en situation de jouer de leurs relations pour peser dans les débats.

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Ajili Ben Youssef, Wissem, e Emma Rozet. "L’impact de la gestion du besoin en fonds de roulement sur la rentabilité des entreprises du CAC 40 dans un contexte de crise". Revue d'économie financière N° 154, n. 2 (27 giugno 2024): 241–52. http://dx.doi.org/10.3917/ecofi.154.0241.

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L’article a pour objectif d’analyser l’impact de la gestion du besoin en fonds de roulement (BFR) sur la rentabilité des entreprises dans le contexte de la crise de la Covid-19. L’étude couvre la période 2017-2021 et porte sur un échantillon de vingt-quatre entreprises du CAC 40. La rentabilité est mesurée par deux indicateurs, à savoir le rendement des capitaux propres (ROE, return on equity ) et le rendement des actifs (ROA, return on asset ). Le cycle de conversion des liquidités est l’indicateur retenu pour l’analyse du BFR. Nous avons utilisé le coefficient de Kendal pour étudier les corrélations entre les différentes variables. Nos résultats confirment une corrélation significative entre le BFR et la rentabilité. Cependant, cette relation a évolué durant la crise de la Covid-19, avec une augmentation de l’impact des délais clients sur la rentabilité. L’étude conclut que la gestion du BFR peut être un facteur de résilience en temps de crise. Classification JEL :

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11

Husser, Jocelyn. "Les fonctions des chartes d’éthique et des codes de déontologie achat". Management & Sciences Sociales N° 15, n. 2 (1 luglio 2013): 16–28. http://dx.doi.org/10.3917/mss.015.0016.

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L’étude menée a porté sur les chartes d’éthique et les codes de déontologie en achat produits par les entreprises du CAC 40. Elle pose la problématique suivante : Quelles sont les fonctions des chartes d’éthique achat des sociétés cotées ? Elle s’inscrit dans une démarche qualitative d’analyse de contenu. Les documents recensés ont fait l’objet d’une analyse structurale centrée sur les actants et sur les grandes fonctions du discours. L’étude révèle que les entreprises cotées ont tendance à communiquer autour d’un axe majeur, celui de la prise en compte des fournisseurs en cohérence avec une dimension économique, environnementale et sociale. Elles énoncent des grands principes, des valeurs, des conduites à tenir destinées aux acheteurs dans une logique de responsabilisation de l’ensemble de la chaîne de sous-traitance. Au-delà des principes évidents énoncés par ces écrits, les entreprises communiquent autour de quatre axes majeurs : le respect d’un environnement élargi impliquant la propre éthique des fournisseurs, la demande d’engagement de ces mêmes fournisseurs aux valeurs et à la culture d’entreprise, l’instrumentalisation des comportements et le renforcement de l’image de l’entreprise à travers un discours éthique fondé sur les concepts actuels de responsabilité sociale et de développement durable .

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12

Senkel, Marie-Pascale. "Responsabilité Sociale d’Entreprise et Supply Chain : une analyse exploratoire de la communication des entreprises du CAC 40". Logistique & Management 22, n. 1 (gennaio 2014): 9–18. http://dx.doi.org/10.1080/12507970.2014.11517040.

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Alberola, Émilie, e Nadine Richez-Battesti. "De la responsabilité sociétale des entreprises : Évaluation du degré d’engagement et d’intégration stratégique Évolution pour les entreprises du CAC 40 entre 2001 et 2003 ?" La Revue des Sciences de Gestion, Direction et Gestion, n. 211-212 (aprile 2005): 55–69. http://dx.doi.org/10.1051/larsg:2005006.

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14

Penin, Pauline. "Les collaborateurs issus de l’immigration dans les entreprises françaises : le cas de 10 comités exécutifs du CAC 40". Question(s) de management 14, n. 3 (2016): 41. http://dx.doi.org/10.3917/qdm.163.0041.

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15

de La Rochefoucauld, Marin, Adnane Chader e Jean-Michel Plane. "Les réseaux sociaux numériques d’entreprise au service de la RSE - Cas de trois grandes entreprises françaises du CAC 40". Revue française de gestion 314, n. 1 (1 gennaio 2024): 17–36. http://dx.doi.org/10.1684/rfg.2024.3.

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16

Barthe, Nicole, Jean-Marie Peretti e Patrice Terramorsi. "Les politiques « santé, sécurité et bien-être au travail » à la lumière des rapports RSE des entreprises du CAC 40". Management & Avenir 38, n. 8 (2010): 104. http://dx.doi.org/10.3917/mav.038.0104.

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17

Jahmane, Abderrahman, Mahrane Hofaidhllaoui e Anis Ben Ali. "La gouvernance responsable, moyen d’assurer une performance financière en période de crises et post-crise ?" Management & Sciences Sociales N° 31, n. 2 (1 luglio 2021): 4–21. http://dx.doi.org/10.3917/mss.031.0004.

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Dans ce papier nous examinons l’influence de la gouvernance sur la performance financière des 39 entreprises cotées en bourse CAC 40 en mars 2019. Nous analysons comment la performance sociale, gouvernementale et environnementale, ne peuvent pas exister sans la performance financière et économique . Le modèle d’analyse des données est appliqué pour la période d’étude de 2002 à 2017, période connue par des crises bancaires et financières. Nos résultats, en utilisant la méthode de Moindre Carré Ordinaire (MCO) et la régression multiple avec une validation finale du modèle de recherche à l’aide des équations structurelles, indiquent qu’il y a des liens négatifs mais non significatifs entre la gouvernance et la performance financière mesurée par ROA et ROE. Mais ce lien est positif significatif pour une mesure à l’aide de Tobin’s Q comme indicateur. À travers nos trois modèles testés et validés, on peut prévoir et gérer le lien entre une gouvernance responsable et durable et la performance financière en période de crise et post-crise .

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Bernardeau-Moreau, Denis, e Marie Hingant. "Sport et socialisation professionnelle. Le cas d’un raid organisé par une entreprise du CAC 40". Sociologies pratiques 32, n. 2 (2016): 33. http://dx.doi.org/10.3917/sopr.032.0033.

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Franklin-Johnson, Elizabeth, e Katia Richomme-Huet. "Crise et gestion de la responsabilité sociétale des entreprises du CAC 40 : Analyse de leur communication sur leur politique RSE entre 2006 et 2010". La Revue des Sciences de Gestion 255-256, n. 3 (2012): 75. http://dx.doi.org/10.3917/rsg.255.0075.

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20

Bassin, Claire. "La loi PACTE une menace pour la qualité de l’audit ? La perception des auditeurs légaux français". ACCRA N° 17, n. 2 (4 maggio 2023): 45–68. http://dx.doi.org/10.3917/accra.017.0045.

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Adoptée au printemps 2019, la loi PACTE bouleverse le monde de l’audit légal : de nombreuses entités n’ont plus d’obligation d’être auditées, mais les CAC peuvent désormais conduire de nouvelles missions. Très hostiles à cette loi, certains CAC affirment qu’elle serait un danger pour la qualité de l’audit. Notre étude interroge cette affirmation. Nous montrons quels éléments de la loi PACTE menacent, selon les CAC, la qualité de l’audit et ses deux composantes : la compétence et l’indépendance des auditeurs. Nos résultats montrent que le rehaussement des seuils de nomination et la nouvelle mission Audit Légal des Petites Entreprises sont les principaux facteurs de risque pour l’indépendance des auditeurs et partant de la qualité de l’audit.

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Chevallier, Marc. "CAC 40 : l'actionnariat étranger recule". Alternatives Économiques 284, n. 10 (1 ottobre 2009): 62. http://dx.doi.org/10.3917/ae.284.0062.

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Gupta, Mukesh Kumar, Raj Kumar Rauniyar, Naveen Kumar Pandey e Deepak Kumar Yadav. "MDCT evaluation of coronary artery calcification in Nepalese population undergoing CT thorax examination for non-cardiac pathology". Asian Journal of Medical Sciences 6, n. 4 (29 novembre 2014): 40–44. http://dx.doi.org/10.3126/ajms.v6i4.11205.

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Background:Coronary artery calcification (CAC) is frequently encountered as incidental findings during CT evaluation of thorax; however, little is known about its magnitude and association with atherosclerotic risk factors in Nepalese population. The purpose of this study was to evaluate the frequency of incidental CAC in patients undergoing standard thoracic CT examination for non-cardiac pathology and to correlate it with risk factors for coronary atherosclerosis.Methods: A hospital based prospective cross-sectional study was conducted on 216 patients over 8 month duration. The coronary arteries were evaluated for calcification on 16-slice MDCT and the frequency of CAC was correlated with atherosclerotic risk factors viz. age, sex, diabetes mellitus, hypertension, smoking and obesity.Results: Incidental CAC was seen in 72(33.3%) of total 216 patients. The rates of CAC below 40, 40-60 and above 60 years age group were 0%, 31.6% and 43.9% respectively. The frequency of CAC in male and female were 35% and 31.2% for all ages, 43.6% and 20% for 40-60 years group, and 35.2% and 61.1% for above 60 years age group respectively. The frequency of CAC was higher in patients with diabetes mellitus (47.5%), hypertension (42.3%), smoking (43%) and obesity (38.9%).Conclusion: Incidental CAC was seen in 33.3% of the patients and it had significant association with advancing age, diabetes mellitus, hypertension and smoking. Rate of CAC was significantly higher in male for 40-60 years group but the frequency drastically increased in female for above 60 years group. DOI: http://dx.doi.org/10.3126/ajms.v6i4.11205 Asian Journal of Medical Sciences Vol.6(4) 2015 40-44

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Azevedo, Gênesis Alves de, e James Ribeiro de Azevedo. "PRODUÇÃO DE MUDAS DE AROEIRA-PRETA (Myracrodruon urundeuva Freire Allemão) COM UTILIZAÇÃO DE SUBSTRATOS ALTERNATIVOS". Revista Científica FAEMA 14, n. 1 (30 giugno 2023): 402–13. http://dx.doi.org/10.31072/rcf.v14i1.1275.

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A utilização de resíduos orgânicos como substrato alternativo apresenta-se como alternativa viável, visto que, são ricos em nutrientes e produzidos em grande quantidade. Esse trabalho teve como objetivo avaliar a eficiência do uso de lodo de esgoto e casca de arroz carbonizada como substrato alternativo na produção de mudas de aroeira-preta (Myracrodruon urundeuva Freire Allemão). O experimento foi conduzido em ambiente protegido na Faculdade de Engenharia/UNESP, Campus de Ilha Solteira. Utilizou-se delineamento inteiramente casualizado, com vinte tratamentos e seis repetições, totalizando 120 mudas. Foram testadas as proporções de lodo de esgoto (LE) e casca de arroz carbonizada (CAC): (100%LE, 0%CAC), (80%LE, 20%CAC), (60%LE, 40%CAC), (40%LE, 60%CAC), (20%LE, 80%CAC) e (100% Substrato comercial). Foram avaliados a altura de planta, diâmetro, comprimento e volume radicular, número de folhas, massa fresca e seca radicular, massa fresca e seca aérea, porcentagem de germinação. As mudas de aroeira-preta produzidas com LE e CAC apresentaram crescimento inferior aos resultados apresentados pela testemunha com substrato comercial. Recomenda-se o uso de LE e CAC nas proporções equivalente a 40% de lodo de esgoto e 60% de casca de arroz carbonizada por apresentar maiores médias biométricas para as mudas.

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Chevallier, Marc. "CAC 40 : internationalisation à géométrie variable". Alternatives Économiques 270, n. 6 (1 giugno 2008): 66. http://dx.doi.org/10.3917/ae.270.0066.

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Didier, Raphaël. "Dans les coulisses du CAC 40". Alternatives Économiques 279, n. 4 (1 aprile 2009): 68. http://dx.doi.org/10.3917/ae.279.0068.

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Delépine, Justin. "Résultats records pour le CAC 40". Alternatives Économiques N° 445, n. 4 (24 aprile 2024): 58–59. http://dx.doi.org/10.3917/ae.445.0058.

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Jeffers, Esther, e Damien Moyé. "Dow Jones, CAC 40, SBF 120 : comment expliquer que le CAC 40 est le plus volatil ?" Revue d'économie financière 74, n. 1 (2004): 203–18. http://dx.doi.org/10.3406/ecofi.2004.5039.

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Santos, Raimundo José Nascimento dos, Ramón Yuri Ferreira Pereira, Luiz Alberto Melo de Sousa, Brenda Silva, Misael Batista Farias Araujo, Isaías dos Santos Reis, Sâmia dos Santos Matos, Francisca Frenna Verezza Rodrigues de Amorim e Raissa Rachel Salustriano da Silva-Matos. "Propagação por estaquia de Polyscias guilfoylei em substrato a base de caule decomposto de babaçu e casca de arroz carbonizada". Research, Society and Development 9, n. 9 (1 settembre 2020): e635997889. http://dx.doi.org/10.33448/rsd-v9i9.7889.

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A propagação vegetativa de floríferas por estaquia é uma alternativa viável para a produção em larga escala, e quando associado a substratos regionais, essa alternativa possibilita obter mudas que atendam às exigências do mercado consumidor, além de reduzir o custo de produção. Buscou-se avaliar com a pesquisa, proporções crescentes de caule decomposto de babaçu (CDB), acrescida de casca de arroz carbonizada (CAC) na propagação vegetativa de Polyscias guilfoylei. O experimento foi conduzido em casa de vegetação com 70 % de interceptação luminosa entre os meses de agosto a outubro de 2019. Foi utilizado o delineamento inteiramente casualizado, com seis tratamentos nas seguintes proporções: 100% de CAC; 20% de CDB + 80% de CAC; 40% de CDB + 60% de CAC; 60% de CDB + 40% de CAC; 80 % de CDB + 20 % de CAC; 100 % de CDB. As variáveis foram: número de folhas; área foliar; número de brotações; altura da brotação; diâmetro da brotação; comprimento da raiz; volume da raiz; massa fresca da parte aérea; massa fresca da raiz; massa seca da parte aérea; massa seca da raiz; diâmetro das estacas; percentual de sobrevivência e índice de qualidade de Dickson. Após 60 dias verificou-se que não é interessante produzir mudas de P. guilfoylei nas proporções de 100% de CAC e 100% de CDB. No entanto, as estaquias de Polyscias guilfoylei responderam positivamente quando utilizado as proporções de 60% de CDB + 40% de CAC e 80% de CDB + 20% de CAC, sendo estas proporções recomendadas.

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Dutra, Adriana Falcão, Maristela Machado Araujo, Anna Paula Lora Zimmermann, Daniele Guarienti Rorato e Suelen Aimi Carpenedo. "Qualidade morfológica de mudas de Prunus sellowii submetidas a diferentes substratos". Pesquisa Florestal Brasileira 37, n. 92 (29 dicembre 2017): 615. http://dx.doi.org/10.4336/2017.pfb.37.92.1030.

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O objetivo desse trabalho foi avaliar diferentes proporções de casca de arroz carbonizada em substrato comercial, no crescimento de mudas de Prunus sellowii em viveiro. Os tratamentos foram compostos de: T1-100% substrato comercial (SC); T2-90% SC e 10% casca de arroz carbonizada (CAC); T3-80% SC e 20% CAC; T4-70% SC e 30% CAC; T5-60% SC e 40% CAC; T6-50% SC e 50% CAC, em delineamento experimental inteiramente casualizado, com quatro repetições. Recomenda-se a adição de 10 a 30% de CAC, sem prejuízos ao crescimento dessa espécie em viveiro

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Dutra, Adriana Falcão, Maristela Machado Araujo, Anna Paula Lora Zimmermann, Daniele Guarienti Rorato e Suelen Carpenedo Aimi. "Qualidade morfológica de mudas de Prunus sellowii submetidas a diferentes substratos". Pesquisa Florestal Brasileira 37, n. 92 (29 dicembre 2017): 619–24. http://dx.doi.org/10.4336/2017.pfb.37.92.1031.

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Abstract (sommario):

O objetivo desse trabalho foi avaliar diferentes proporções de casca de arroz carbonizada em substrato comercial, no crescimento de mudas de Prunus sellowii em viveiro. Os tratamentos foram compostos de: T1 - 100% substrato comercial (SC); T2 - 90% SC e 10% casca de arroz carbonizada (CAC); T3-80% SC e 20% CAC; T4 -70% SC e 30% CAC; T5 - 60% SC e 40% CAC; T6 - 50% SC e 50% CAC, em delineamento experimental inteiramente casualizado, com quatro repetições. Recomenda-se a adição de até 30% de CAC, sem prejuízos ao crescimento dessa espécie em viveiro.

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31

Panchal, Ashish R., Blandine Comte, Hazel Huang, Basil Dudar, Bridgette Roth, Margaret Chandler, Christine Des Rosiers, Henri Brunengraber e William C. Stanley. "Acute hibernation decreases myocardial pyruvate carboxylation and citrate release". American Journal of Physiology-Heart and Circulatory Physiology 281, n. 4 (1 ottobre 2001): H1613—H1620. http://dx.doi.org/10.1152/ajpheart.2001.281.4.h1613.

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In the well-perfused heart, pyruvate carboxylation accounts for 3–6% of the citric acid cycle (CAC) flux, and CAC carbon is lost via citrate release. We investigated the effects of an acute reduction in coronary flow on these processes and on the tissue content of CAC intermediates. Measurements were made in an open-chest anesthetized swine model. Left anterior descending coronary artery blood flow was controlled by a extracorporeal perfusion circuit, and flow was decreased by 40% for 80 min to induce myocardial hibernation ( n = 8). An intracoronary infusion of [U-13C3]lactate and [U-13C3]pyruvate was given to measure the entry of pyruvate into the CAC through pyruvate carboxylation from the13C-labeled isotopomers of CAC intermediates. Compared with normal coronary flow, myocardial hibernation resulted in parallel decreases of 65% and 79% in pyruvate carboxylation and net citrate release by the myocardium, respectively, and maintenance of the CAC intermediate content. Elevation of the arterial pyruvate concentration by 1 mM had no effect. Thus a 40% decrease in coronary blood flow resulted in a concomitant decrease in pyruvate carboxylation and citrate release as well as maintenance of the CAC intermediates.

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32

Gartshteyn, Yevgeniya, Genna Braverman, Sharan Mahtani, Laura Geraldino-Pardilla, Sabahat Bokhari e Anca Askanase. "Prevalence of coronary artery calcification in young patients with SLE of predominantly Hispanic and African–American descent". Lupus Science & Medicine 6, n. 1 (giugno 2019): e000330. http://dx.doi.org/10.1136/lupus-2019-000330.

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ObjectivesCardiovascular disease (CVD) is a leading cause of death in SLE. Coronary artery calcium (CAC) scores predict CVD events, independent of traditional risk factors. Patients with SLE aged >45 years have an increased prevalence of CAC in a predominantly white population. Little is known about CAC in younger patients with SLE. We evaluated CAC in younger patients with SLE of predominantly African–American and Hispanic ancestry, compared with healthy controls.MethodsWe identified 76 patients with SLE meeting 1997 American College of Rheumatology classification criteria, without known coronary artery disease and who had a non-contrast chest CT performed as part of their clinical care, with images retrievable for calculation of CAC scores. Demographics, disease characteristics and comorbidities were ascertained and adjusted for.Results42.1% of patients with SLE (mean age 40±13 years, 90% female, 33% Hispanic and 40% African–American) had CAC>0, 32% for age ≤45 years and 61.6% for age >45. Patients with SLE with CAC>0 were older and had more comorbid hypertension. Women with SLE aged ≤45 years, had a 12.6-fold higher adjusted odds of CAC>0 compared with age-matched and sex-matched controls (95% CI 5.2 to 30.7, p<0.001). Furthermore, 29% of patients with SLE aged 18–32 years (median disease duration of 5 years) had CAC>0.ConclusionPatients with SLE aged ≤45 years have an increased prevalence of detectable CAC compared with the general population. Our data suggest that subclinical atherosclerosis in SLE develops early and warrants timely screening and cardioprotective interventions.

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Cotentin, Claire. "CAC 40 : mais où sont les femmes ?" Alternatives Économiques 285, n. 11 (1 novembre 2009): 54. http://dx.doi.org/10.3917/ae.285.0054.

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Canuet, Alexis. "CAC 40 : des actionnaires encore trop passifs". Alternatives Économiques N° 338, n. 9 (1 settembre 2014): 74. http://dx.doi.org/10.3917/ae.338.0074.

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Dogon, Cathy. "Le CAC 40, thermomètre des multinationales tricolores". Pour l'Éco N° 35, n. 8 (1 ottobre 2021): 24. http://dx.doi.org/10.3917/poec.035.0024.

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Zeghdoudi, Halim, Abdellah Lallouche e Mohamed Riad Remita. "On Volatility Swaps for Stock Market Forecast: Application Example CAC 40 French Index". Journal of Probability and Statistics 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/854578.

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This paper focuses on the pricing of variance and volatility swaps under Heston model (1993). To this end, we apply this model to the empirical financial data: CAC 40 French Index. More precisely, we make an application example for stock market forecast: CAC 40 French Index to price swap on the volatility using GARCH(1,1) model.

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37

Fiszka Borzyszkowska, Agnieszka Fiszka, Agnieszka Sulowska, Ivar Zekker, Jakub Karczewski, Kai Bester e Anna Zielińska-Jurek. "Environmentally Friendly Fabrication of High-Efficient Fe-ZnO/Citric Acid-Modified Cellulose Composite and the Enhancement of Photocatalytic Activity in the Presence of H2O2". Catalysts 12, n. 11 (4 novembre 2022): 1370. http://dx.doi.org/10.3390/catal12111370.

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In the present study, a novel Fe-ZnO/citric acid-modified cellulose composite (x%Fe-ZnO-y%CAC) was synthesized using an environmentally friendly hydrothermal method. The obtained samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV−vis diffuse reflectance spectroscopy (DRS), Fourier transform infrared spectroscopy (FTIR), nitrogen physisorption, and electrochemical and photocurrent density analyses. The influence of the additives from the series of x%Fe-ZnO-y%CAC photocatalysts with Fe content from 0 to 5% and CAC content from 0 to 80% on photocatalytic degradation of ibuprofen (IBU) under simulated solar light was investigated. The photocatalyst 0.5%Fe-ZnO-40%CAC showed high photocatalytic activity of 0.0632 min−1 first-order kinetic rate constant and 46% TOC reduction of IBU under simulated solar light irradiation. Additionally, H2O2-assisted photocatalytic process was investigated for facilitating the IBU degradation in the presence of 0.5%Fe-ZnO-40%CAC; the first-order kinetic rate constant was 2.7 times higher compared to the process without addition of H2O2. Moreover, the effect of radical scavengers was examined to explain the degradation mechanism of IBU by synthesized photocatalysts supported with H2O2. The demonstrated system provides a low-cost and green approach to improve the photocatalytic activity of x%Fe-ZnO-y%CAC photocatalysts.

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Enow, Samuel Tabot. "VOLATILITY PERSISTENCE IN INTERNATIONAL FINANCIAL MARKETS IN THE POST COVID-19 ERA". International Journal of Banking and Finance 18, n. 2 (25 giugno 2023): 79–96. http://dx.doi.org/10.32890/ijbf2023.18.2.4.

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The long-term behaviour of stock markets are of significant importance to asset managers and financial experts due to its direct link with security price valuation. Volatility persistence has a significant impact on the returns of security prices due to its time varying properties. However, there is no real meaningful effect of current volatility on future security prices and returns if the volatility is transitory and not persistent. The aim of this study was to explore conditional volatility properties and determine whether the current volatile environment would persist in the JSE, S&P 500, Nasdaq Index, SSE, CAC 40 and DAX markets. Using a GARCH 1.1 model and a Markov switching model, the findings revealed that volatility would persist in the JSE, S&P 500, Nasdaq Index, SSE, CAC 40, and the DAX from their ARCH and GARCH coefficients, as well as the delay parameters. In addition, the effects of past volatility in the Nasdaq, CAC 40, and DAX would remain in the forecast of variance. A diversified and broader investment approach should be used in the JSE, S&P 500, Nasdaq Index, SSE, CAC 40, and DAX indexes to mitigate risk, and portfolio formation should not concentrate on any sector or asset classes.

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Santoso, Andreas Hartanto, Caesar Rio Julyanto Putra, Josephine Rasidi, Hoo Felicia Davina Hadi Gunawan, Joshua Henrina Sundjaja, Irvan Cahyadi e Leonardo Paskah Suciadi. "DISTRIBUTION OF CORONARY ARTERY CALCIUM SCORE BASED ON AGE AND GENDER IN HEALTHY POPULATION". Damianus Journal of Medicine 20, n. 1 (31 maggio 2021): 1–8. http://dx.doi.org/10.25170/djm.v20i1.2212.

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Introduction: Coronary Artery Calcification (CAC) score may give information in cardiovascular risk stratification asymptomatic individuals. Profiles and distribution of CAC scores are still scarce in Indonesia. This study aimed to evaluate the distribution of CAC based on age and gender in asymptomatic patients. Methods: Subjects were asymptomatic Asian above 40 years-old undergoing cardiovascular check-up, including Computed Tomography (CT) CAC at Siloam Heart Institute, from April 2018 to August 2019. Data were obtained retrospectively and analyzed statistically with IBM SPSS version 22. Results: A total of 1640 patients were enrolled, with males slightly more than half. The mean age was 55,6 ± 9,6 years, with age group of 50-59 years as the majority (35,9%). Almost half of the subjects had zero CAC score. Around two-thirds of females, particularly below 50 years old, had zero CAC scores. CAC scores >400 were more prevalent in males across all age groups. The majority of healthy males had a CAC score between 0-99. There was a positive correlation between age and CAC scores in both genders. Females with CAC score >400 were found mostly after 70 years old, ten years older than males. CAC score >1000 was more prevalent in older males compared to females. Conclusion: The distribution of CAC score is remarkably affected by age and gender. Zero CAC score is found predominant in our subjects. CAC scores of ≥400 are common in males across all age groups. CAC score >1000 is more exclusively found in the elderly male

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ADAMA, ABDEL AZIZ, e Jules Roger FEUDJO. "effet famille : une explication du differentiel d’endettements des entreprises familiales et non familiales". Journal of Academic Finance 10, n. 1 (30 giugno 2019): 2–20. http://dx.doi.org/10.59051/joaf.v10i1.148.

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Cet article a un triple objectifs, le premier qui se veut évaluatif a mis en évidence la proportion de la dette dans la structure financière des entreprises familiales et non familiales; s'en est suivi d'une seconde qui se veut comparatif et ayant débouché sur la mise en exergue des différences observées; enfin arrive le dernier qui se veut explicatif de cet écart à l'aide de ce qui est convenu d'appeler effet famille. Sur la base d’un échantillon de 40 entreprises familiales et 40 entreprises non familiales camerounaises, l’étude établit que les entreprises familiales sont plus endettées que leurs consœurs non familiales. Mais pris ensemble dans la globalité, les deux formes d'entreprises sont moyennement endettées. Après des approches descriptives, évaluatives et comparatives, une approche explicative est proposée. Trois facteurs de l'effet famille (Intensité du caractère familiale de l'actionnariat, la dominance familiale de l'organe de gestion et la dominance familiale de l'organe de gouvernance) expliquent la proportion de la dette des entreprises familiales par rapport aux non familiales.

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Barakian, Yasamin, Abolfazl Mohammadbeigi, Fatemeh Ahmadian e Mohaddeseh Bahrami Khandan. "Carotid Artery Calcification in Panoramic Radiography and Related Risk Factors". Qom Univ Med Sci J 16, n. 9 (1 dicembre 2022): 702–11. http://dx.doi.org/10.32598/qums.16.9.1462.9.

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Background and Objectives: The carotid artery calcification (CAC) can be seen in panoramic radiographs that are usually used in dentistry. This study aims to determine the prevalence of CAC in Qom, Iran using panoramic radiographs, and find its related factors. Methods: This is a descriptive cross-sectional study. Panoramic radiographs of 417 patients aged ≥40 years referred to a specialized oral and maxillofacial radiology center in Qom city in 2021 were examined for the presence of CAC and a questionnaire was used to find the related risk factors. The collected data were analyzed in SPSS software, vertion 22 using Chi-square test and t-test. Results: Of 417 participants, 141 (33.8%) were male and 276 (66.2%) were female. The prevalence of CAC was 1.4%. There was a significant association between CAC and history of cardiovascular diseases (P=0.03), but the incidence of CAC had no association with the history of diabetes, smoking, hypertension, cerebrovascular accident, and myocardial infarction (P>0.05). Conclusion: The incidence of CAC is associated with the history of cardiovascular diseases. Further prospective studies with larger sample sizes are recommended.

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Delépine, Justin. "Les gagnants de la croissance du CAC 40". Alternatives Économiques N° 409, n. 2 (23 febbraio 2021): 24–30. http://dx.doi.org/10.3917/ae.409.0024.

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ABOURA, SOFIANE. "PRICING CAC 40 INDEX OPTIONS WITH STOCHASTIC VOLATILITY". Journal of Derivatives Accounting 02, n. 01 (marzo 2005): 77–85. http://dx.doi.org/10.1142/s0219868105000343.

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Yu, Heze, Geao Liang, Bo Dou e Jiangdong Ni. "Cyclopentadione-aniline conjugate suppresses proliferation and induces apoptosis in liver cancer cells via up-regulation of p38 phosphorylation". Tropical Journal of Pharmaceutical Research 18, n. 3 (12 maggio 2021): 505–11. http://dx.doi.org/10.4314/tjpr.v18i3.9.

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Purpose: To investigate the effect of cyclopentadione-aniline conjugate (CAC) on proliferation of liver cancer cells. Methods: MTT assay and flow cytometry were used for the determination of the effect of CAC on cell proliferation and apoptosis. Western blotting was used to measure the influence of CAC on the expressions of various proteins, while Matrigel-coated Transwell assay was used for assessment of cell invasion. Results: CAC inhibited proliferation of liver cancer cells in a concentration-dependent manner. The degree of proliferation of HepG2 cells was 98, 89, 76, 66, 51, 42 or 36 %, on treatment with 0.25, 0.5, 1.0, 1.5, 2.0, 2.5 or 3.0 µM CAC, respectively. In H4TG cells, treatment with 0.25, 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0 µM CAC decreased proliferation of cells to 99, 91, 79, 70, 54, 46 and 40 %, respectively. Apoptosis was induced in 34.56, 37.37 and 52.98 % cells, on treatment with 2.0, 2.5 and 3.0 µM CAC, respectively. The invasive potential of HepG2 cells was significantly decreased by CAC (p < 0.05). Marked decreases were observed in Bcl-2, MMP-2, MMP-9, c-ERK1/2 and phospho-Akt levels in CACtreated HepG2 cells. CAC treatment markedly upregulated Bax and phospho ERK1/2, but significantly downregulated phospho PI3K, phospho mTOR and phospho Akt in HepG2 cells (p < 0.05). However, the level of phospho p38 was decreased in CAC-treated cells. Conclusion: These results demonstrate that CAC inhibits proliferation of liver cancer cells via apoptosis induction. Thus, CAC can potentially be used for the treatment of liver cancer in humans

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CAO, Hui-li, Xiong-biao CHEN, Jin-guo LU, Zhi-hui HOU, Xiang TANG, Yang GAO, Fang-fang YU et al. "Metabolic syndrome and coronary artery calcification: a community-based natural population study". Chinese Medical Journal 126, n. 24 (20 dicembre 2013): 4618–23. http://dx.doi.org/10.3760/cma.j.issn.0366-6999.20131083.

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Background Little is known about the influence of metabolic syndrome (MetS) on coronary artery calcification (CAC) in China. In this article, we aimed to explore the distribution of CAC in populations with and without MetS, and estimate the influence of MetS and its components on CAC in a community-based population of Beijing. Methods A total of 1647 local residents of Beijing, age 40-77 years, were recruited for a cardiovascular risk factors survey and were determined fasting plasma glucose (FPG), blood lipids, and 64 multi-detector computed tomography (64-MDCT) coronary artery calcium score (CACS) measurement (Agatston scoring). The distribution of CAC was described, and the influence of MetS components on CAC was evaluated. Results In this population, the prevalence and extent of CAC increased with increasing age and both were higher in MetS subjects compared to nonMetS subjects (all P <0.05), with the exception of those older than 65 years old. The risk of CAC increased with increasing numbers of MetS components, and the odds ratios for predicting positive CAC in subjects with 1, 2, 3, and ≥4 MetS components were 1.60, 1.84, 2.12, and 3.12, respectively (all P <0.05). Elevated blood pressure, elevated FPG, elevated triglycerides, and overweight increased the risk of CAC, yielding odds ratios of 2.64, 1.67, 1.32, and 1.37, respectively (all P <0.05). Conclusions In the Beijing community-based population, MetS increases the risk of CAC. The risk of CAC increases with increasing numbers of MetS components. Not only the number, but also the variety of risk factors for MetS is correlated with the risk of CAC. Elevated blood pressure, hyperglycemia, hypertriglyceridemia and overweight increase the risk of CAC.

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Vaz, Vinícius Moreira, Douglas Santos Gonçalves e Priscila Bezerra De Souza. "Influência da Casca de Arroz Carbonizada no Desenvolvimento de Mudas de Enterolobium contortisiliquum (VELL.) Morong". UNICIÊNCIAS 22, n. 2 (30 dicembre 2018): 76. http://dx.doi.org/10.17921/1415-5141.2018v22n2p76-80.

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Entre as espécies florestais nativas indicadas para a recuperação de áreas degradas está o Enterolobium contortisiliquum (Vell.) Morong, pouco se sabe sobre os processos germinativos e de produção de mudas desta espécie. Diante disso, o presente estudo teve como objetivo avaliar a influência da casca de arroz carbonizada no desenvolvimento de mudas de Enterolobium contortisiliquum. O experimento foi conduzido no Viveiro Florestal da Universidade Federal do Tocantins, campus Universitário de Gurupi – TO, em que foram instalados cinco tratamentos e 20 repetições, com adição de Casca de Arroz Carbonizada (CAC) no substrato comercial Bioflora® (SCB), nas proporções de (T1) 0% CAC + 100% SCB, (T2) 25% CAC + 75% SCB, (T3) 50% CAC + 50% SCB, (T4) 75% CAC + 25% SCB e (T5) 100% CAC. Aos 20, 40 e 60 dias, após a semeadura, foram avaliados os parâmetros altura da parte aérea e diâmetro do coleto. Ao final de 60 dias foram obtidos os parâmetros: peso da massa seca da raiz, peso da massa seca da parte aérea, peso da massa seca total e índice de qualidade de Dickson. O delineamento experimental utilizado foi o inteiramente casualizado (DIC), as médias dos tratamentos foram comparadas através do Software Assistat 7.7 pelo teste Scott e Knott ao nível de 5% de probabilidade. O uso de casca de arroz carbonizada (CAC) influenciou no desenvolvimento de mudas de Enterolobium contortisiliquum (Vell.) Morong. Palavras-chave: Substratos Alternativos. Tamboril. Viveiro Florestal AbstractAmong the native forest species indicated for the recovery of degraded areas is Enterolobium contortisiliquum (Vell.) Morong, little is known about the germination processes and seedling production of this species. Therefore, the present study aimed to evaluate the influence of carbonized rice husk on the development of Enterolobium contortisiliquum seedlings. The experiment was conducted in the Forest Nursery of the Federal University of Tocantins, University campus of Gurupi - TO, five treatments and 20 replicates were installed, with the addition of Carbonized Rice Peel (CAC) in the commercial substratum Bioflora ® (SCB), in proportions (T1) 0% CAC + 100% SCB, (T2) 25% CAC + 75% SCB, (T3) 50% CAC + 50% SCB, (T4) 75% CAC + 25% SCB and (T5) 100% CAC . At 20, 40 and 60 days after sowing, the parameters of shoot height and shoot diameter were evaluated. At the end of 60 days, the following parameters were obtained: root dry mass weight, shoot dry mass weight, total dry mass weight and Dickson quality index. The used experimental design was completely randomized (DIC), the means of the treatments were compared using Software Assistat 7.7 by the Scott and Knott test at the 5% probability level. The use of carbonized rice husk (CAC) influenced the development of Enterolobium contortisiliquum (Vell.) Morong seedlings. Keywords: Alternative Substrates. Monkfish. Forest Nursery

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Adnyana, Putu Suryabrata, e Machrumnizar Machrumnizar. "SKORING CORONARY ARTERY CALSIUM PADA INDIVIDU USIA DEWASA AKHIR DAN LANSIA DENGAN HIPERTENSI". JURNAL PENELITIAN DAN KARYA ILMIAH LEMBAGA PENELITIAN UNIVERSITAS TRISAKTI 8, n. 2 (12 luglio 2023): 283–92. http://dx.doi.org/10.25105/pdk.v8i2.15556.

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Hypertension causes an increase in coronary artery calcium (CAC), which is a strong predictor of new-onset hypertension and occurrences related to atherosclerotic cardiovascular disease in people either with or without hypertension. The medical application of CAC scoring to adjust hypertension management has received slight attention and is poorly defined. In Indonesia, research on the benefits of CAC assessment for hypertension is yet very limited. This study will show the association of hypertension with CAC rating, age, and gender. This cross-sectional study used secondary data in the form of medical records from 163 patients (88 men, 75 women; range 40-70 years) at Siloam Hospital TB Simatupang. Sample collection was carried out using consecutive nonrandom sampling. Only medical records with complete physical examination results and CAC scoring will be further analyzed. The Mann-Whitney statistical test was carried out using the SPSS 25.0 program to see the relationship between CAC scoring and hypertension, with a value of p=0.002 and a significance level of p<0.05. To assess the relationship between age and gender with the incidence of hypertension, a chi square test was carried out, with each value p = 0.011 and p = 0.141 (p <0.05). The results showed a relationship between CAC scoring and hypertension in late adulthood and elderly individuals.

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Manna, S., D. Cardoso da Silva, M. Sehn, J. Wiese, C. Heldt, I. Plumbom, T. Conrad et al. "OP24 SPP1 in colitis-associated colon cancer". Journal of Crohn's and Colitis 18, Supplement_1 (1 gennaio 2024): i42—i43. http://dx.doi.org/10.1093/ecco-jcc/jjad212.0024.

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Abstract Background Patients with ulcerative colitis (UC) and Crohn’s disease (CD) face a lifelong risk of developing colitis-associated carcinoma (CAC). Current insights into CAC development originate from murine CAC models, while human CAC studies primarily focus on mutational analyses. Although the mutational landscape reveals distinct patterns and frequencies compared to colorectal cancer, it falls short in elucidating the inflammatory mechanisms of CAC development. Consequently, we adopted a multi-omics approach to unravel CAC carcinogenesis, utilizing human samples from patients with CD, CD-associated CAC (CD-CAC), UC, and UC-associated CAC (UC-CAC). Findings were further validated in vitro using human colon organoids. Methods A Nanostring Immunology v2 panel was employed on RNA (archival FFPE sections) from 40 patients suffering from either IBD or CAC, alongside inflammation-free healthy controls (n=10 per group). Our data revealed a robust upregulation of the SPP1 (Secreted Phosphoprotein 1) gene encoding osteopontin (OPN) in CAC patients. Prospectively, we extended our methodology to an unbiased imaging-based spatial RNA in situ sequencing (ISS) approach (477 genes, Xenium, 10X Genomics) using FFPE sections from CAC and UC patients (n=3 per group). This provided insights into the spatial expression of SPP1 and its target receptors at a subcellular resolution. Findings were validated using whole FFPE section confocal microscopy. In addition, in vitro models, including human UC organoids, were analyzed by bulk RNA-Seq, RT-qPCR, and downstream functional assays. Results Nanostring Immunology v2 gene expression data revealed upregulation of the SPP1 gene encoding OPN (Fig 1A) and EMT transcription factors FN1 and ZEB1 in CAC patients. Xenium RNA in situ sequencing (ISS) unveiled the spatial heterogeneity of SPP1 expression in CAC (Fig 1B). Unsupervised graph-based clustering identified an SPP1+CD68+ macrophage cluster exclusively in CAC (Fig 1C), validated through OPN/CD68 immunostainings (Fig 1D). In vitro OPN stimulation across multiple human and mice colon organoid models excluded OPN as the trigger of EMT. Interestingly, Xenium ISS and immunostainings revealed a mutually exclusive spatial location of SPP1/OPN+ macrophages and CD8+ T cells (Fig 1E, F and G). Conclusion SPP1 is significantly upregulated in CAC (RNA and protein), expressed by CD68+ macrophages. In vitro OPN stimulation demonstrated no direct effect on intestinal epithelial organoids. The mutually exclusive spatial locations of SPP1/OPN+ macrophages and CD8+ T cells suggests a crucial role of SPP1/OPN in modulating the immunosurveillance of CAC cells by CD8+ tumour lymphocytes.

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Gonçalves, Sara Lia, Jéssica De Oliveira Luiz Damasceno, Fernando Fortes Picoli, Juliano Martins Bueno e Mayara Barbosa Viandelli Mundim-Picoli. "Avaliação de prevalência de calcificação da artéria carótida em radiografias panorâmicas na população goiana". Scientific Investigation in Dentistry 22, n. 1 (30 novembre 2017): 70. http://dx.doi.org/10.29232/2317-2835.2017v22i1.p70-75.

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Objetivo: Este trabalho teve por finalidade investigar a prevalência de imagens compatíveis com calcificação da artéria carótida (CAC) como achado incidental em radiografias panorâmicas numa amostra da população goiana. Metodologia: Foram analisadas radiografias panorâmicas digitais obtidas de pacientes com idade igual ou superior à 40 anos, de ambos os gêneros, encaminhados ao serviço de radiologia de clínica particular. Um examinador, com conhecimento em radiologia, investigou a presença de áreas radiopacas, na altura das vértebras C3 e C4, com angulação de 45 graus formada com o ângulo da mandíbula, sugestivas de CAC. Resultados: Foi encontrada uma prevalência de 6,1% de CAC na população estudada. Foi observado um risco mais elevado de desenvolvimento de CAC em pacientes com idade superior à 55 anos (OR=2,92). Houve diferença estatisticamente significante entre a presença de CAC e gênero (p=0,004) sendo as mulheres 1,60 vezes mais acometidas que os homens quando o desfecho se fez presente. Conclusão: A radiografia panorâmica representa um método com potencial para sugerir a presença de CAC, devendo o cirurgião-dentista estar atento à esta possibilidade de diagnóstico, contribuindo para a prevenção de eventos cardiovasculares e vasculocerebrais.

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Sousa, Ana Paula de Almeida, Samuel Ferreira Pontes, Raissa Rachel Salustriano da Silva Matos, Myllenna Da Silva Santana, Deucleiton Jardim Amorim, Carlos Alberto Araújo Costa, Lídia Ferreira Moraes, Maria Da Paz Pires Silva, Mayara De Sousa dos Santos e Gilberto Saraiva Tavares Filho. "Casca de arroz carbonizada como substrato alternativo na propagação por estaquia de ixora (ixora coccínea)". Revista Ibero-Americana de Ciências Ambientais 12, n. 2 (10 febbraio 2021): 19–26. http://dx.doi.org/10.6008/cbpc2179-6858.2021.002.0003.

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Abstract (sommario):

A ixora (Ixora coccínea) é um arbusto muito utilizado na floricultura e se destaca pelo seu uso como bordaduras, cercas vivas entre outros. O substrato comercial, embora apresente qualidade indispensável para produção de mudas, torna o custo final bem mais elevado e uma forma de superar essa limitação é a utilização de substrato regional ou alternativo. Visto que o mercado de flores tem crescido no ramo paisagístico do agronegócio, o presente trabalho teve como objetivo avaliar a utilização da palha de arroz carbonizada como substrato para a produção de mudas de ixora via estaquia. Adotou-se delineamento inteiramente casualizado, com cinco tratamentos e quatro repetições referente a utilização de substrato a base de casca de arroz carbonizada (CAC). Para todos os tratamentos, realizou-se a formulação de substratos (S) nas seguintes proporções: S1- 100% de areia; S2- 20% de CAC + 80% de areia; S3- 40% de CAC + 60% de areia; S4- 60% de CAC + 40% de areia; S5- 80% de CAC + 20% de areia. Os dados foram submetidos à análise de variância pelo teste 'F', para diagnóstico de efeito significativo e os tratamentos comparados entre si pelo teste de Duncan a 5% de probabilidade. Os substratos de casca de arroz carbonizada apresentaram resultados satisfatórios na propagação vegetativa das estacas de ixora. Recomenda-se, para propagação das estacas de ixora, a utilização de 80% de casca de arroz carbonizada acrescida a 20% de areia, como substrato alternativo para produção de mudas de ixora.

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